This document discusses diversity techniques for wireless communication. It aims to reduce fading, a major impairment in wireless channels. Diversity techniques involve transmitting multiple replicas of a signal over different fading channels and combining them at the receiver. This reduces the probability that all signals will fade simultaneously. Different types of diversity include temporal, frequency, and spatial diversity using multiple antennas. Spatial diversity is most popular as it provides a more robust communication without using extra power or bandwidth resources. The document examines factors causing wireless channel impairments and parameters for characterizing fading channels. Diversity techniques mitigate fading and improve wireless communication system performance.
The peer-reviewed International Journal of Engineering Inventions (IJEI) is started with a mission to encourage contribution to research in Science and Technology. Encourage and motivate researchers in challenging areas of Sciences and Technology.
1) The document discusses channel estimation techniques for 4G wireless networks using OFDM modulation.
2) Channel estimation is important for coherent detection and diversity techniques in wireless systems, which have time-varying channels. Accurate channel estimation allows techniques like maximal ratio combining.
3) OFDM divides the channel into multiple sub-carriers to combat multipath fading and make channel equalization easier compared to single carrier systems. Channel estimation is needed to characterize the time-varying frequency response of the wireless channel.
IRJET - Underwater Wireless Communication using Visible LightIRJET Journal
This document proposes and evaluates a system for underwater wireless communication using visible light. It begins with an introduction to the challenges of underwater communication using acoustic waves or electromagnetic waves. It then describes an existing acoustic-based system and its limitations. The proposed system is presented, using visible light modulated by LEDs to transmit data underwater through optical signals. The system includes a transmitter that modulates the light and a receiver with a photodiode. Testing showed successful underwater transmission over short distances. Benefits of this approach include high bandwidth, data rates, and low latency compared to acoustic systems, while drawbacks include signal absorption, scattering, and the need for precise line-of-sight alignment between transceivers.
Survey of analysis and performance of ofdm signals in time and frequency disp...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
This document proposes techniques to reduce interference in WCDMA networks through cell resizing. It begins with background on WCDMA and sources of interference. It then proposes classifying cells as normal, saturated or cooperative based on SNR measurements. Saturated cells trigger a cell resizing process where users are transferred to neighboring cooperative cells to balance load and cancel interference. Simulation results showed this approach reduces blocking probability and achieves optimal transmission rates with reduced delay.
Impact of Next Generation Cognitive Radio Network on the Wireless Green Eco s...ijeei-iaes
Land mobile communication is burdened with typical propagation constraints due to the channel characteristics in radio systems.Also,the propagation characteristics vary form place to place and also as the mobile unit moves,from time to time.Hence,the tramsmission path between transmitter and receiver varies from simple direct LOS to the one which is severely obstructed by buildings, foliage and terrain. Multipath propagation and shadow fading effects affect the signal strength of an arbitrary Transmitter-Receiver due to the rapid fluctuations in the phase and amplitude of signal which also determines the average power over an area of tens or hundreds of meters. Shadowing introduces additional fluctuations, so the received local mean power varies around the area –mean. The present paper deals with the performance analysis of impact of next generation wireless cognitive radio network on wireless green eco system through signal and interference level based k coverage probability under the shadow fading effects.
This document discusses and compares wireless communication technologies including OFDMA, SC-FDMA, CDMA, and LTE. It provides an overview of these technologies, how they have evolved over time, and their performance. Key points discussed include how LTE uses OFDMA for downlinks and SC-FDMA for uplinks, the benefits of MIMO techniques for improving spectral efficiency, and methods for estimating signal-to-noise ratio to enable adaptive modulation schemes. The document also includes figures comparing parameters of various wireless standards.
IRJET-Propagation Models for Wireless Communication SystemIRJET Journal
This document discusses propagation models in wireless communication systems. It begins by introducing the challenges of wireless communication due to factors like noise, fading and interference that vary unpredictably over time. It then describes several key characteristics of wireless channels that affect signal propagation: path loss, where signal strength decreases with distance; fading caused by multipath interference; shadowing from obstructions; Doppler shift from motion; and co-channel and adjacent channel interference. The document provides models for path loss prediction and discusses indoor and outdoor propagation models for wireless system design and deployment.
The peer-reviewed International Journal of Engineering Inventions (IJEI) is started with a mission to encourage contribution to research in Science and Technology. Encourage and motivate researchers in challenging areas of Sciences and Technology.
1) The document discusses channel estimation techniques for 4G wireless networks using OFDM modulation.
2) Channel estimation is important for coherent detection and diversity techniques in wireless systems, which have time-varying channels. Accurate channel estimation allows techniques like maximal ratio combining.
3) OFDM divides the channel into multiple sub-carriers to combat multipath fading and make channel equalization easier compared to single carrier systems. Channel estimation is needed to characterize the time-varying frequency response of the wireless channel.
IRJET - Underwater Wireless Communication using Visible LightIRJET Journal
This document proposes and evaluates a system for underwater wireless communication using visible light. It begins with an introduction to the challenges of underwater communication using acoustic waves or electromagnetic waves. It then describes an existing acoustic-based system and its limitations. The proposed system is presented, using visible light modulated by LEDs to transmit data underwater through optical signals. The system includes a transmitter that modulates the light and a receiver with a photodiode. Testing showed successful underwater transmission over short distances. Benefits of this approach include high bandwidth, data rates, and low latency compared to acoustic systems, while drawbacks include signal absorption, scattering, and the need for precise line-of-sight alignment between transceivers.
Survey of analysis and performance of ofdm signals in time and frequency disp...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
This document proposes techniques to reduce interference in WCDMA networks through cell resizing. It begins with background on WCDMA and sources of interference. It then proposes classifying cells as normal, saturated or cooperative based on SNR measurements. Saturated cells trigger a cell resizing process where users are transferred to neighboring cooperative cells to balance load and cancel interference. Simulation results showed this approach reduces blocking probability and achieves optimal transmission rates with reduced delay.
Impact of Next Generation Cognitive Radio Network on the Wireless Green Eco s...ijeei-iaes
Land mobile communication is burdened with typical propagation constraints due to the channel characteristics in radio systems.Also,the propagation characteristics vary form place to place and also as the mobile unit moves,from time to time.Hence,the tramsmission path between transmitter and receiver varies from simple direct LOS to the one which is severely obstructed by buildings, foliage and terrain. Multipath propagation and shadow fading effects affect the signal strength of an arbitrary Transmitter-Receiver due to the rapid fluctuations in the phase and amplitude of signal which also determines the average power over an area of tens or hundreds of meters. Shadowing introduces additional fluctuations, so the received local mean power varies around the area –mean. The present paper deals with the performance analysis of impact of next generation wireless cognitive radio network on wireless green eco system through signal and interference level based k coverage probability under the shadow fading effects.
This document discusses and compares wireless communication technologies including OFDMA, SC-FDMA, CDMA, and LTE. It provides an overview of these technologies, how they have evolved over time, and their performance. Key points discussed include how LTE uses OFDMA for downlinks and SC-FDMA for uplinks, the benefits of MIMO techniques for improving spectral efficiency, and methods for estimating signal-to-noise ratio to enable adaptive modulation schemes. The document also includes figures comparing parameters of various wireless standards.
IRJET-Propagation Models for Wireless Communication SystemIRJET Journal
This document discusses propagation models in wireless communication systems. It begins by introducing the challenges of wireless communication due to factors like noise, fading and interference that vary unpredictably over time. It then describes several key characteristics of wireless channels that affect signal propagation: path loss, where signal strength decreases with distance; fading caused by multipath interference; shadowing from obstructions; Doppler shift from motion; and co-channel and adjacent channel interference. The document provides models for path loss prediction and discusses indoor and outdoor propagation models for wireless system design and deployment.
K Coverage Probability of 5G Wireless Cognitive Radio Network under Shadow Fa...ijeei-iaes
Land mobile communication is burdened with typical propagation constraints due to the channel characteristics in radio systems.Also,the propagation characteristics vary form place to place and also as the mobile unit moves,from time to time.Hence,the tramsmission path between transmitter and receiver varies from simple direct LOS to the one which is severely obstructed by buildings,foliage and terrain.Multipath propagation and shadow fading effects affect the signal strength of an arbitrary Transmitter-Receiver due to the rapid fluctuations in the phase and amplitude of signal which also determines the average power over an area of tens or hundreds of meters.Shadowing introduces additional fluctuations,so the received local mean power varies around the area –mean.The present section deals with the performance analysis of fifth generation wireless cognitive radio network on the basis of signal and interference level based k coverage probability under the shadow fading effects.
This document summarizes research on improving the capacity of cellular systems using fractional frequency reuse (FFR). It discusses how frequency reuse is used to increase the number of users that can be served but causes interference, particularly for cell edge users. Fractional frequency reuse is proposed to solve this problem by allocating different frequency sets to cell center and edge users to reduce interference. The document also reviews different types of interference (co-channel and adjacent channel) and how power control can help reduce interference in cellular systems.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Analysis of Simulation Parameters of Pulse Shaping FIR Filter for WCDMAijsrd.com
The application of signal processing techniques to wireless communications is an emerging area that has recently achieved dramatic improvement in results and holds the potential for even greater results in the future as an increasing number of researchers from the signal process and communications areas participate in this expanding field. From an industrial viewpoint also, the advanced signal processing technology cannot only dramatically increase the wireless system capacity but can also improve the communication quality including the reduction of all types of interference. The present paper deals with simulation model of square root raised cosine pulse shaping filter for WCDMA with different parameters of the filter at 5Mhz.The present paper deals with study of Simulation Parameters (Number of Bits, Number of Errors) of Pulse Shaping FIR Filter at different value of group delay(2,4,6,8) to the calculate BER for WCDMA.
The document discusses and compares different types of transmission media, including twisted pair, coaxial cable, and optical fiber. It states that twisted pair is the most commonly used guided transmission medium due to its low cost but it has limitations in distance, bandwidth, and data rate compared to other options. Coaxial cable can support higher data rates over longer distances than twisted pair. However, optical fiber has become more attractive due to its tremendous capacity and has taken over much of the market for high-speed networks.
11.smart antennas in 0004www.iiste.org call for paper_gAlexander Decker
This document summarizes a paper on smart antennas in 4G systems. It discusses how smart antennas work using an array of antenna elements and a digital signal processor to form beams. This allows for diversity gain, array gain, and interference suppression, improving capacity. Smart antennas can distinguish between propagation paths to transmit independent data streams or redundantly encode data. They can also suppress interference for conventional transmitters. Applications discussed include space division multiple access, beamforming basics, switched beam antennas, and use in mobile communications for increased gain and reduced interference.
This document summarizes and compares various relay selection techniques for cooperative communication systems. It begins by introducing cooperative communication and describing the basic system model involving a source, destination, and multiple relays. It then reviews seven categories of relay selection methods: 1) threshold-based techniques, 2) multiple relay beamforming, 3) cross-layer techniques, 4) distributed techniques, 5) delay-optimized techniques, 6) joint relay selection and resource optimization techniques, and 7) techniques that perform joint uplink and downlink relay selection. Each category is described and examples of approaches within that category are provided. The techniques are compared in terms of their benefits, challenges, and ability to optimize parameters such as power, throughput, and delay.
Implementation of Particle Swarm Optimization Technique for Enhanced Outdoor ...Onyebuchi nosiri
This paper describes the development of optimized model for urban outdoor coverage in Long Term Evolution (LTE) network at 2300 MHz frequency band in Port Harcourt urban region, Nigeria. Signal attenuation and fluctuation remain amongst the major channel impairments for mobile radio communication systems. This arises as a result of model incompatibility with terrain and Line of Sight (LOS) obstruction of the channel signals. Some path loss models such as OkumuraHata, COST 231, Ericsson 999, Egli and ECC-33 models were evaluated for suitability and compared with the modified model for the environments. The models were based on data collected from LTE base stations at three geographical locations in Port Harcourt namely- Rumuokoro, Eneka and Ikwerre roads respectively. The simulation was implemented using MATLAB R2014a software. The modified model was further optimized with some selected parameters such as Root Mean Square Error (RMSE) and Mean Absolute Error (MAE) using Particle Swarm Optimization (PSO) technique. The results obtained gave rise to 3.030dB for RMSE and 0.00162dB for MAE respectively. The results obtained from the PSO optimized model demonstrated a better performance which is suitable for cell coverage planning and smooth handoff processes.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
This document discusses various types of transmission media, including guided media like twisted pair, coaxial cable, and optical fiber, as well as wireless transmission using microwave frequencies and antennas. It covers topics like the characteristics, bandwidth, and impairments of different media, as well as wireless propagation methods like ground wave, sky wave, and line of sight transmission and the effects of multipath interference and free space loss.
This presentation provides an overview of transmission media. It discusses the objectives of elaborating on what transmission media is and showing how the project team has learned about it. It defines transmission media as physical paths that convey signals between transmitters and receivers. Guided media like copper and fiber optic cables physically guide the signals, while unguided wireless transmission sends them through the air. The presentation covers the history of transmission media and discusses common types like copper, wireless, and fiber optic networks.
Communication channels can be either guided (wired) or unguided (wireless) and are used to transmit data between a transmitter and receiver. Guided channels include twisted pair cables, coaxial cables, and optical fibers which have different bandwidth and transmission properties. Unguided channels include terrestrial microwave, satellite, and broadcast radio which propagate signals through the air. The type of channel used depends on factors like bandwidth needs, data rate, distance, and number of receivers.
Transmission media can be either wired (guided) or wireless (unguided) and are used to transmit signals from one device to another. Wired media include twisted pair, coaxial cable, and fiber optic cable. Wireless media transmit electromagnetic waves without a physical conductor and include radio waves, microwaves, and infrared. The type of media used depends on factors like bandwidth, distance, data rate, susceptibility to interference, and cost. Each media has its own advantages and limitations for different communication applications.
The Effects of Interferenceon the Transmission and Coverage in High Buildings IJERA Editor
Wireless communication is one of the most rapidly developing technologies in recent time, with wonderful
services and products emerging together. These developments present huge challenges for communication
engineers, as the demand for increased wireless capacity grow fast. Re-using the limited available spectrum will
results a critical issue that affects the system performance, which is co-channel interference. This issue will
limits the uplink coverage and capacity of the wireless system. It is needed to come up with such method of
interference cancellation. We will investigate the transmission in multiple floors building by deploying
femtocell based distributed antenna that connected at each entire floor, the signal will be processed by jointing
all femto base stations for all cells in the building. We will try to introduce a solution to the arising problem of
co-channel interference from frequency reuse, by measuring and analyzing the gain when deploying interference
cancellation at each base station.
This document summarizes key points from Chapter 3 of the textbook "Wireless Mobile Computer Networks" by William Stallings. It discusses different types of communication networks including LANs, WANs, and MANs. It also covers circuit switching versus packet switching, components of public telecommunications networks, asynchronous transfer mode (ATM), and examples of ATM service categories.
Bit Error Rate Assessment of Digital Modulation Schemes on Additive White Gau...inventionjournals
This document evaluates the performance of three digital modulation schemes (16-QAM, 64-QAM, and 16-DPSK) in terms of bit error rate on different channel models (AWGN, Rician fading, and Rayleigh fading). Simulation results show that 16-QAM has better performance with lower bit error rates compared to 64-QAM and 16-DPSK across all channel models. 16-QAM modulation is more spectrally efficient than other schemes and can send more bits per symbol. The document provides background on digital modulation techniques, channel models, and simulations conducted in MATLAB to compare the performance of the modulation schemes.
Comprehensive investigation of coherent optical OFDM-RoF employing 16QAM exte...IJECEIAES
Given the growing need for long haul transmission that requires a high rate of data, the orthogonal frequency division multiplexing scheme (OFDM), is regarded as a technique with high potentials for high-capacity optical networks. OFDM transmits over both optical and wireless channels, with the data distributed over a huge amount of the subcarrier, and the data is distributed over a huge number of subcarriers. OFDM achieves RF signal for a long-haul transmitting by utilizing Radio over Fiber (RoF) system, which is known to produce higher orthogonality of the OFDM modulated signal designed for the wireless network. RoF systems comprise of heterogeneous networks designed through the use of wireless and optical links. The aim of this paper is to carry out an investigation of the performance of the external modulation in RoF links, while analyzing the shortcomings caused by the various elements of the optical system. The Mach–Zehnder modulator (MZM) can be applied in external modulation, and exhibits a more robust performance when implemented with the OFDM modulation technique.
Design of area optimized aes encryption core using pipelining technologyIAEME Publication
This document summarizes a research paper that proposes a new pipelined design for the AES-128 encryption algorithm to optimize chip area. The design divides the 128-bit plaintext, key, and ciphertext into four 32-bit units and processes them in parallel through 10 pipeline stages, one for each round of encryption. Simulation results show the new design significantly reduces chip pins and area compared to the original iterative design while maintaining encryption speed.
Action event retrieval from cricket video using audio energy feature for even...IAEME Publication
This document summarizes a research paper that proposes an audio-based approach for retrieving action events from cricket videos. The approach detects action events by measuring abnormal increases in audio energy levels during batsman strokes and crowd cheers. The researchers extract audio features like MFCC coefficients and calculate audio energy values from cricket video soundtracks. Peaks in energy levels are detected to find action clips corresponding to strokes and cheers. The experiments analyze cricket videos and show the method can efficiently retrieve action events using only audio analysis of crowd noise and bat impacts.
A novel technique in spiht for medical image compressionIAEME Publication
This document presents a novel technique for medical image compression using multi-wavelet transformation with modified fast Haar wavelet transform (MFHWT) in the Set Partitioning in Hierarchical Trees (SPIHT) algorithm. The technique aims to minimize information loss and increase image quality during compression. It involves applying multi-wavelet decomposition using MFHWT on the image, then using SPIHT to find significant and insignificant pixels. A region of interest is selected before compression to avoid loss of important image details. The technique is evaluated on medical images and shows improved peak signal-to-noise ratio and compression ratio compared to standard SPIHT.
K Coverage Probability of 5G Wireless Cognitive Radio Network under Shadow Fa...ijeei-iaes
Land mobile communication is burdened with typical propagation constraints due to the channel characteristics in radio systems.Also,the propagation characteristics vary form place to place and also as the mobile unit moves,from time to time.Hence,the tramsmission path between transmitter and receiver varies from simple direct LOS to the one which is severely obstructed by buildings,foliage and terrain.Multipath propagation and shadow fading effects affect the signal strength of an arbitrary Transmitter-Receiver due to the rapid fluctuations in the phase and amplitude of signal which also determines the average power over an area of tens or hundreds of meters.Shadowing introduces additional fluctuations,so the received local mean power varies around the area –mean.The present section deals with the performance analysis of fifth generation wireless cognitive radio network on the basis of signal and interference level based k coverage probability under the shadow fading effects.
This document summarizes research on improving the capacity of cellular systems using fractional frequency reuse (FFR). It discusses how frequency reuse is used to increase the number of users that can be served but causes interference, particularly for cell edge users. Fractional frequency reuse is proposed to solve this problem by allocating different frequency sets to cell center and edge users to reduce interference. The document also reviews different types of interference (co-channel and adjacent channel) and how power control can help reduce interference in cellular systems.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Analysis of Simulation Parameters of Pulse Shaping FIR Filter for WCDMAijsrd.com
The application of signal processing techniques to wireless communications is an emerging area that has recently achieved dramatic improvement in results and holds the potential for even greater results in the future as an increasing number of researchers from the signal process and communications areas participate in this expanding field. From an industrial viewpoint also, the advanced signal processing technology cannot only dramatically increase the wireless system capacity but can also improve the communication quality including the reduction of all types of interference. The present paper deals with simulation model of square root raised cosine pulse shaping filter for WCDMA with different parameters of the filter at 5Mhz.The present paper deals with study of Simulation Parameters (Number of Bits, Number of Errors) of Pulse Shaping FIR Filter at different value of group delay(2,4,6,8) to the calculate BER for WCDMA.
The document discusses and compares different types of transmission media, including twisted pair, coaxial cable, and optical fiber. It states that twisted pair is the most commonly used guided transmission medium due to its low cost but it has limitations in distance, bandwidth, and data rate compared to other options. Coaxial cable can support higher data rates over longer distances than twisted pair. However, optical fiber has become more attractive due to its tremendous capacity and has taken over much of the market for high-speed networks.
11.smart antennas in 0004www.iiste.org call for paper_gAlexander Decker
This document summarizes a paper on smart antennas in 4G systems. It discusses how smart antennas work using an array of antenna elements and a digital signal processor to form beams. This allows for diversity gain, array gain, and interference suppression, improving capacity. Smart antennas can distinguish between propagation paths to transmit independent data streams or redundantly encode data. They can also suppress interference for conventional transmitters. Applications discussed include space division multiple access, beamforming basics, switched beam antennas, and use in mobile communications for increased gain and reduced interference.
This document summarizes and compares various relay selection techniques for cooperative communication systems. It begins by introducing cooperative communication and describing the basic system model involving a source, destination, and multiple relays. It then reviews seven categories of relay selection methods: 1) threshold-based techniques, 2) multiple relay beamforming, 3) cross-layer techniques, 4) distributed techniques, 5) delay-optimized techniques, 6) joint relay selection and resource optimization techniques, and 7) techniques that perform joint uplink and downlink relay selection. Each category is described and examples of approaches within that category are provided. The techniques are compared in terms of their benefits, challenges, and ability to optimize parameters such as power, throughput, and delay.
Implementation of Particle Swarm Optimization Technique for Enhanced Outdoor ...Onyebuchi nosiri
This paper describes the development of optimized model for urban outdoor coverage in Long Term Evolution (LTE) network at 2300 MHz frequency band in Port Harcourt urban region, Nigeria. Signal attenuation and fluctuation remain amongst the major channel impairments for mobile radio communication systems. This arises as a result of model incompatibility with terrain and Line of Sight (LOS) obstruction of the channel signals. Some path loss models such as OkumuraHata, COST 231, Ericsson 999, Egli and ECC-33 models were evaluated for suitability and compared with the modified model for the environments. The models were based on data collected from LTE base stations at three geographical locations in Port Harcourt namely- Rumuokoro, Eneka and Ikwerre roads respectively. The simulation was implemented using MATLAB R2014a software. The modified model was further optimized with some selected parameters such as Root Mean Square Error (RMSE) and Mean Absolute Error (MAE) using Particle Swarm Optimization (PSO) technique. The results obtained gave rise to 3.030dB for RMSE and 0.00162dB for MAE respectively. The results obtained from the PSO optimized model demonstrated a better performance which is suitable for cell coverage planning and smooth handoff processes.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
This document discusses various types of transmission media, including guided media like twisted pair, coaxial cable, and optical fiber, as well as wireless transmission using microwave frequencies and antennas. It covers topics like the characteristics, bandwidth, and impairments of different media, as well as wireless propagation methods like ground wave, sky wave, and line of sight transmission and the effects of multipath interference and free space loss.
This presentation provides an overview of transmission media. It discusses the objectives of elaborating on what transmission media is and showing how the project team has learned about it. It defines transmission media as physical paths that convey signals between transmitters and receivers. Guided media like copper and fiber optic cables physically guide the signals, while unguided wireless transmission sends them through the air. The presentation covers the history of transmission media and discusses common types like copper, wireless, and fiber optic networks.
Communication channels can be either guided (wired) or unguided (wireless) and are used to transmit data between a transmitter and receiver. Guided channels include twisted pair cables, coaxial cables, and optical fibers which have different bandwidth and transmission properties. Unguided channels include terrestrial microwave, satellite, and broadcast radio which propagate signals through the air. The type of channel used depends on factors like bandwidth needs, data rate, distance, and number of receivers.
Transmission media can be either wired (guided) or wireless (unguided) and are used to transmit signals from one device to another. Wired media include twisted pair, coaxial cable, and fiber optic cable. Wireless media transmit electromagnetic waves without a physical conductor and include radio waves, microwaves, and infrared. The type of media used depends on factors like bandwidth, distance, data rate, susceptibility to interference, and cost. Each media has its own advantages and limitations for different communication applications.
The Effects of Interferenceon the Transmission and Coverage in High Buildings IJERA Editor
Wireless communication is one of the most rapidly developing technologies in recent time, with wonderful
services and products emerging together. These developments present huge challenges for communication
engineers, as the demand for increased wireless capacity grow fast. Re-using the limited available spectrum will
results a critical issue that affects the system performance, which is co-channel interference. This issue will
limits the uplink coverage and capacity of the wireless system. It is needed to come up with such method of
interference cancellation. We will investigate the transmission in multiple floors building by deploying
femtocell based distributed antenna that connected at each entire floor, the signal will be processed by jointing
all femto base stations for all cells in the building. We will try to introduce a solution to the arising problem of
co-channel interference from frequency reuse, by measuring and analyzing the gain when deploying interference
cancellation at each base station.
This document summarizes key points from Chapter 3 of the textbook "Wireless Mobile Computer Networks" by William Stallings. It discusses different types of communication networks including LANs, WANs, and MANs. It also covers circuit switching versus packet switching, components of public telecommunications networks, asynchronous transfer mode (ATM), and examples of ATM service categories.
Bit Error Rate Assessment of Digital Modulation Schemes on Additive White Gau...inventionjournals
This document evaluates the performance of three digital modulation schemes (16-QAM, 64-QAM, and 16-DPSK) in terms of bit error rate on different channel models (AWGN, Rician fading, and Rayleigh fading). Simulation results show that 16-QAM has better performance with lower bit error rates compared to 64-QAM and 16-DPSK across all channel models. 16-QAM modulation is more spectrally efficient than other schemes and can send more bits per symbol. The document provides background on digital modulation techniques, channel models, and simulations conducted in MATLAB to compare the performance of the modulation schemes.
Comprehensive investigation of coherent optical OFDM-RoF employing 16QAM exte...IJECEIAES
Given the growing need for long haul transmission that requires a high rate of data, the orthogonal frequency division multiplexing scheme (OFDM), is regarded as a technique with high potentials for high-capacity optical networks. OFDM transmits over both optical and wireless channels, with the data distributed over a huge amount of the subcarrier, and the data is distributed over a huge number of subcarriers. OFDM achieves RF signal for a long-haul transmitting by utilizing Radio over Fiber (RoF) system, which is known to produce higher orthogonality of the OFDM modulated signal designed for the wireless network. RoF systems comprise of heterogeneous networks designed through the use of wireless and optical links. The aim of this paper is to carry out an investigation of the performance of the external modulation in RoF links, while analyzing the shortcomings caused by the various elements of the optical system. The Mach–Zehnder modulator (MZM) can be applied in external modulation, and exhibits a more robust performance when implemented with the OFDM modulation technique.
Design of area optimized aes encryption core using pipelining technologyIAEME Publication
This document summarizes a research paper that proposes a new pipelined design for the AES-128 encryption algorithm to optimize chip area. The design divides the 128-bit plaintext, key, and ciphertext into four 32-bit units and processes them in parallel through 10 pipeline stages, one for each round of encryption. Simulation results show the new design significantly reduces chip pins and area compared to the original iterative design while maintaining encryption speed.
Action event retrieval from cricket video using audio energy feature for even...IAEME Publication
This document summarizes a research paper that proposes an audio-based approach for retrieving action events from cricket videos. The approach detects action events by measuring abnormal increases in audio energy levels during batsman strokes and crowd cheers. The researchers extract audio features like MFCC coefficients and calculate audio energy values from cricket video soundtracks. Peaks in energy levels are detected to find action clips corresponding to strokes and cheers. The experiments analyze cricket videos and show the method can efficiently retrieve action events using only audio analysis of crowd noise and bat impacts.
A novel technique in spiht for medical image compressionIAEME Publication
This document presents a novel technique for medical image compression using multi-wavelet transformation with modified fast Haar wavelet transform (MFHWT) in the Set Partitioning in Hierarchical Trees (SPIHT) algorithm. The technique aims to minimize information loss and increase image quality during compression. It involves applying multi-wavelet decomposition using MFHWT on the image, then using SPIHT to find significant and insignificant pixels. A region of interest is selected before compression to avoid loss of important image details. The technique is evaluated on medical images and shows improved peak signal-to-noise ratio and compression ratio compared to standard SPIHT.
Experimental study of evaporation in a tubular solar stillIAEME Publication
This document summarizes an experimental study on evaporation in a tubular solar still. The study aims to determine the heat transfer coefficients in the still and their relationship to variables like temperature. An outdoor experiment is conducted using a prototype tubular solar still constructed with a PVC cover. Temperature readings are recorded. Theoretical models are analyzed to predict evaporation rate based on factors like humidity and vapor pressure. Constants C and n are evaluated using experimental data to better model heat transfer rate equations for this still design compared to previous models.
Comparative study on different pin geometries of tool profile in friction sti...IAEME Publication
This document presents a comparative study on different pin geometries for tool profiles in friction stir welding using artificial neural networks. An experiment was conducted using AA6061 aluminum alloy plates welded with two different pin profiles (conical and triangular). Tensile strength test results were obtained for 27 welded joints under different welding parameters. Regression and artificial neural network models were developed to predict tensile strength based on the input parameters of tool rotation speed, welding speed, and axial force. The regression model results showed good agreement with experimental data. The artificial neural network model was found to be an effective method for predicting joint performance and identifying optimal welding conditions compared to regression analysis.
Concurrent engineering an effective engineering management strategyIAEME Publication
The document discusses concurrent engineering as an effective engineering management strategy for product development. It defines concurrent engineering as an approach that integrates product and process development from the beginning to complete the product lifecycle faster at lower cost. The document outlines the history and evolution of concurrent engineering. It describes the key elements of a concurrent engineering approach including concept development, customer needs identification, and design for manufacturing. It emphasizes the importance of teamwork and provides guidelines for successful implementation through multidisciplinary teams and management support.
Calculation of the undetermined static reactions for the articulated plIAEME Publication
This document presents a method for calculating the undetermined static reactions in an articulated plane quadrilateral mechanism. It begins by introducing the mechanism and establishing the mathematical model using Plücker coordinates and the relative displacement method. Transformation matrices are defined to relate the coordinate systems. Stiffness and flexibility matrices are derived for a bar element. Equations of equilibrium are written for the mechanism and used to solve for the undetermined reactions in terms of the joint displacements and applied forces/moments. The results allow determining the static reactions for the third order statically undetermined articulated plane quadrilateral mechanism.
Performance optimization and comparison of variable parameter using geneticIAEME Publication
This document summarizes research comparing the performance of variable parameter nonlinear PID (NL-PID) and genetic algorithm (GA) based PID controllers. The NL-PID controller changes its own parameters over time based on an error function, while the GA-PID controller uses a genetic algorithm to optimize PID parameters to minimize an objective function like mean squared error. Simulation results showed that both the NL-PID and GA-PID controllers had better performance than a traditional Ziegler-Nichols PID controller in terms of smaller rise time, overshoot and settling time, as well as lower values for performance indices like integrated squared error. The GA-PID controller provided the best performance of the three controllers tested.
Query clip genre recognition using tree pruning technique for video retrievalIAEME Publication
The document proposes a method for video retrieval based on genre recognition of a query video clip. It extracts regions of interest from frames of the query clip and videos in a database. Features are extracted from these regions and used for matching via Euclidean distance. A tree pruning technique is employed to recognize the genre of the query clip and retrieve similar genre videos from the database. The method segments objects, extracts features, performs matching and genre recognition, and retrieves relevant videos in three or fewer sentences.
Final paperenhancing distribution system through the use of real time etherne...Genc Gjergjani
This document discusses enhancing distribution systems through the use of real-time Ethernet in smart grids. It proposes using modern SCADA operation with RMUs installed at key locations on feeders interfacing with communication systems for quick fault identification and control. The paper compares conventional SCADA operations to modern operations in fault identification and restoration. Conventional methods took 30-45 minutes for partial restoration after manual isolator opening, while modern methods using remote RMU opening allowed partial restoration in a very short time. The document highlights communication architectures using Ethernet TCP/IP and various communication standards used to enhance grid performance.
Monitoring and analysis of reliaibility of electrical distribution systemIAEME Publication
This document summarizes a study on monitoring and analyzing the reliability of electrical distribution systems using MATLAB. The study develops a reliability analysis program in MATLAB to assess factors that affect distribution reliability. Field visits were conducted to distribution substations in India to collect data. The objectives of the study are to provide reliability data to utility management, allow performance comparisons, determine how design and maintenance affect reliability, and aid maintenance scheduling. The significance of the study is that distribution reliability is important for utilities facing market pressures to satisfy customers while minimizing costs. The MATLAB model allows a new method for evaluating reliability and identifying cost-effective preventative maintenance strategies.
Improved linearization of laser source and erbium dopedIAEME Publication
This document discusses techniques to reduce nonlinear distortion in Radio over Fiber (RoF) systems. It summarizes:
1) Predistortion is used to reduce nonlinearity introduced by the laser source. By introducing a predistortion circuit in front of the laser, its nonlinearity can be reduced.
2) Feedforward technique is employed to reduce nonlinear distortion in erbium doped fiber amplifiers (EDFAs).
3) Both techniques are analyzed individually and their combined effect is investigated to minimize nonlinear distortion in RoF systems.
This document discusses the use of smart antennas in 4G mobile communications. It begins by defining smart antennas as antenna arrays connected to a digital signal processor that can enhance wireless links through diversity gain, array gain, and interference suppression. This allows for higher data rates or more simultaneous users. The document then discusses key principles such as using antenna arrays to distinguish propagation paths and encode independent data streams. It also covers applications like space division multiple access and beamforming basics. Specific benefits of smart antennas for mobile communications discussed include increased antenna gain, decreased inter-symbol interference, and spatial filtering/nulling of interference.
Smart antennas for mobile communicationspriyasindhu
This document provides an introduction to smart antennas for mobile communications. It discusses how smart antennas, which use multiple antenna elements at transceivers, can help address challenges in wireless networks like limited spectrum resources and multipath interference. Smart antennas can provide array gain through signal combining, exploit spatial diversity to combat fading, and help mitigate interference. Early forms of spatial processing included adaptive beamforming and antenna diversity techniques. Selection diversity is described as one simple method of diversity combining.
Ofdm mimo and v-blast algorithm-key to high speed wireless communicationIAEME Publication
This document provides an overview of OFDM-MIMO technology for high-speed wireless communication. It discusses how OFDM divides a high-rate data stream into parallel lower-rate substreams that are transmitted over multiple carriers. MIMO is then used to further improve data rates and quality of service by exploiting multiple antennas at the transmitter and receiver. The document also describes V-BLAST, an algorithm used in MIMO systems to separate simultaneously transmitted signals at the receiver through ordered cancellation.
Ofdm mimo and v-blast algorithm-key to high speed wireless communicationIAEME Publication
This document provides an overview of OFDM-MIMO technology for high-speed wireless communication. It discusses how OFDM divides a high-rate data stream into parallel lower-rate substreams that are transmitted over multiple carriers. MIMO is then used to further improve data rates and quality of service by exploiting multiple antennas at the transmitter and receiver. The document also describes V-BLAST, an algorithm used in MIMO systems to separate simultaneously transmitted signals at the receiver through ordered cancellation.
Channel Estimation Techniques in MIMO-OFDM LTE SystemsCauses and Effects of C...IJERA Editor
There is an increasing demand for high data transmission rates with the evolution of the very large scale integration (VLSI) technology. The multiple input multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) systems are used to fulfill these requirements because of their unique properties such as high spectral efficiency, high data rate and resistance towards multipath propagation. MIMO-OFDM systems are finding their applications in the modern wireless communication systems like IEEE 802.11n, 4G and LTE. They also offer reliable communication with the increased coverage area. The bottleneck to the MIMO-OFDM systems is the estimation of the channel state information (CSI). This can be estimated with the help of any one of the Training Based, Semiblind and Blind Channel estimation algorithms. This paper presents various channel estimation algorithms, optimization techniques and their effective utilization in MIMO-OFDM for modern wireless LTE systems.
A Review Of Diversity Techniques For Wireless Communiation SystemsCourtney Esco
This document summarizes diversity techniques for wireless communication systems. It discusses both physical diversity techniques like space, time, and frequency diversity as well as virtual diversity techniques like cooperative diversity. Physical diversity techniques combat multipath fading by transmitting the same information over different paths. Spatial diversity uses multiple antennas at the transmitter or receiver. Well-known spatial diversity codes include Alamouti's STBC and generalized complex orthogonal STBCs. Maximum ratio combining is discussed as the optimal receive diversity technique. Virtual diversity techniques like cooperative diversity create a virtual MIMO system by having nodes cooperate to transmit each other's messages. Cooperative diversity can achieve diversity gains similar to MIMO.
IMPLEMENTATION OF LINEAR DETECTION TECHNIQUES TO OVERCOME CHANNEL EFFECTS IN ...IJCI JOURNAL
Spatial diversity technique enables improvement in quality and reliability of wireless link. Antenna
diversity along with understanding effects of channel on transmitted signal and methods to overcome the
channel impairment plays an important role in wireless communication where sharing of channel occurs
between users. In this paper single input single output system (SISO) is compared with multiple input
multiple output system (MIMO) in terms of bit error rate performance. Bit error rate performance is also
evaluated for MIMO with least squares (LS) and Minimum mean square error (MMSE) linear detection.
Further analysis and simulation is done to understand the effect of channel imperfections on BER.
COMPARISON OF BER AND NUMBER OF ERRORS WITH DIFFERENT MODULATION TECHNIQUES I...Sukhvinder Singh Malik
This paper provides analysis of BER and Number of Errors for MIMO-OFDM wireless communication system by using different modulation techniques. Wireless designers constantly seek to improve the spectrum efficiency/capacity, coverage of wireless networks, and link reliability. So the performances of the wireless communication systems can be enhanced by using multiple transmit and receive antennas, which is generally referred to as the MIMO technique. Here analysis will be carried out for an OFDM wireless communication system using different modulation techniques and considering the effect and the wireless channel like AWGN, fading. Performance results will be evaluated numerically and graphically using the plots of BER versus SNR and plots of number of errors versus SNR.
The document summarizes various diversity techniques used in wireless communication systems to mitigate the effects of fading. It describes that diversity exploits the random nature of radio propagation by finding independent signal paths for communication. The key diversity techniques discussed are spatial (antenna) diversity, macroscopic diversity, polarization diversity, frequency diversity, and time diversity. Spatial diversity uses multiple antennas to select the strongest signal and is further classified into techniques like selection diversity and maximal ratio combining. The document compares the different diversity methods and concludes that diversity improves reliability in fading environments by using multiple communication channels.
Techniques for Improving BER and SNR in MIMO Antenna for Optimum PerformanceIJMTST Journal
The use of multiple antennas for diversity, including MIMO (Multiple Input Multiple Output) is one of the most promising wireless technologies for broadband communication applications. This antenna system is a vital study in today’s wireless communication system especially when the signal propagates through some corrupted environments. In our paper new techniques of improving bit error ratio and signal to noise ratio are discussed. Inter symbol interference is a major limitation of wireless communications. It degrades the performance significantly if the delay spread is comparable or higher than the symbol duration. To remove ISI, equalization needs to be included at the receiver end. This paper discusses the merits of the MIMO system and the techniques used for improving BER performance and SNR. In MIMO wireless communication, an equalizer is used to recover a signal that suffers from Inter symbol Interference (ISI) and the BER characteristics is improved and a good SNR can be obtained. Different equalization techniques are discussed in this paper.
This document summarizes recent advances in wireless communication through the implementation of OFDM-MIMO systems. It discusses how OFDM can transmit multiple signals simultaneously using orthogonal subcarriers to improve data rates. MIMO uses multiple antennas at the transmitter and receiver to provide diversity gain and increase capacity. The combination of OFDM and MIMO (OFDM-MIMO) results in increased data rates and efficiency by overcoming problems like frequency selective fading. It then describes how OFDM-MIMO systems can transmit a single signal using transmit diversity and relay selection with decode-and-forward or amplify-and-forward protocols to further improve performance. Simulations show the OFDM-MIMO system achieves a lower bit error rate than
Development And Implementation Of OFDM Transceiver For WLAN ApplicationsIJERA Editor
Multi-Carrier modulation is a technique for data transmission by multiplexing a low bit-rate data streams to modulated carriers into signal Wideband Carrier. Multi-Carrier transmission has a lot of useful properties such as delay-spread tolerance and spectrum efficiency that encourage their use in untethered broadband communication. OFDM is becoming the chosen modulation technique for wireless communications. OFDM is a multi-carrier modulation scheme with densely spaced sub-carriers that has gained a lot of popularity among the broadband community in the last few years. OFDM can provide large data rate with sufficient robustness to radio channel impairments. OFDM works on the principle of Orthogonality. The orthogonality between subcarriers which is at the core of OFDM modulation requires a perfect synchronization. OFDM has properties like high spectral efficiency, Resiliency to RF interference and Lower multi-path distortion. This work is concentrated in implementing both transmitter and receiver using Matlab software and also to verify whether the transmitted data is obtained at the receiver side. As we are using the OFDM technique we will be having bandwidth efficiency when compared to the normal FDM technique.
This document discusses an OFDM-based wireless LAN transmitter architecture. It begins with an abstract that describes OFDM signals used in 802.11 wireless LAN systems and the need for high data rate wireless communication. It then provides background on OFDM and orthogonal frequency division multiplexing. The document describes the proposed OFDM-based wireless LAN architecture, which includes modules for time and frequency recovery, channel estimation, and channel coding to protect data from noise and interference during transmission.
Propagation Path Loss Modeling and Outdoor Coverage Measurements Review in Mi...IJECEIAES
The global bandwidth inadequacy facing wireless carriers has motivated the exploration of the underutilized millimeter wave (mm-wave) frequency spectrum for future broadband cellular communication networks, and mmWave band is one of the promising candidates due to wide spectrum. This paper presents propagation path loss and outdoor coverage and link budget measurements for frequencies above 6 GHz (mm-wave bands) using directional horn antennas at the transmitter and omnidirectional antennas at the receiver. This work presents measurements showing the propagation time delay spread and path loss as a function of separation distance for different frequencies and antenna pointing angles for many types of real-world environments. The data presented here show that at 28 GHz, 38 GHz and 60 GHz, unobstructed Line of Site (LOS) channels obey free space propagation path loss while non-LOS (NLOS) channels have large multipath delay spreads and can utilize many different pointing angles to provide propagation links. At 60 GHz, there is more path loss and smaller delay spreads. Power delay profiles PDPs were measured at every individual pointing angle for each TX and RX location, and integrating each of the PDPs to obtain received power as a function of pointing angle. The result shows that the mean RMS delay spread varies between 7.2 ns and 74.4 ns for 60 GHz and 28 GHz respectively in NLOS scenario.
Prediction of wireless communication systems in the context of modeling 2-3-4IAEME Publication
This document discusses modeling and predicting the performance of wireless communication systems using multiple antennas.
It begins by introducing MIMO (multiple-input multiple-output) wireless systems and their advantages over single antenna systems. These include increased range, reduced interference, and improved capacity.
The document then analyzes MIMO system performance over flat fading channels with different fading statistics and levels of channel state information. It also discusses measurement results validating the Rayleigh fading assumption and the impact of mutual antenna coupling.
Finally, it covers stochastic channel models for MIMO systems, extending existing SISO models to the MIMO case. It models the correlation between antenna elements using general correlation models and covariance matrices.
Design and Simulation of Smart Antenna for D2D Communicationijtsrd
Device to Device D2D communication allows user devices to directly communicate with each other. D2D using smart antenna will reduce the interference and also reduce the power with respect to distance between the devices. This D2D communication generates directional signal transmission between D2D pairs and reduces the interference between other users. This study also proposes the study of 4x4 MIMO microstrip patch antenna for 5G cellular network. This antenna operates at the frequency of 3.3 4.2 GHZ and its resonant frequency is 3.75GHZ. Rogers RO4350B lossy with thickness of 0.101mm and dielectric constant has been used as the antenna substrate. The simulations results shows that the proposed antenna design and it explains about the beam forming concepts that provides the need of D2D communication for 5G application. The antenna is steered to particular direction with the help of beam forming algorithm. This shows that such scheme improves the system capacity compared to the traditional one by focusing it in a desired direction. This method will provide security to the data, increases the network efficiency, consume less power and traffic made by the signals is reduced. Dr. Arunachalaperumal | B. S. Aparna | R. Renugadevi "Design and Simulation of Smart Antenna for D2D Communication" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-4 , June 2020, URL: https://www.ijtsrd.com/papers/ijtsrd31609.pdf Paper Url :https://www.ijtsrd.com/engineering/electronics-and-communication-engineering/31609/design-and-simulation-of-smart-antenna-for-d2d-communication/dr-arunachalaperumal
COMPARISON OF SISO & MIMO TECHNIQUES IN WIRELESS COMMUNICATIONJournal For Research
This paper compares MIMO vs SISO and mention difference between SISO and MIMO techniques. These are techniques based on number of antennas used at the transmitter and the receiver. SISO has been in use since the invention of wireless system.MIMO concept has been recently added to the wireless system. There are different MIMO algorithms which have been developed for two main reasons to increase coverage and to increase the data rates. SISO means Single Input Single Output while MIMO means Multiple Input Multiple Output.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Performance Analysis of GSM Network for Different Types of Antennas IJEEE
Today, in metro cities BTSs are increasing day by day and interference is also increasing. This paper shows the received power of the cell depends on a number of factors. Antenna gain and antenna type are one of the important parameters for this. This paper reveals the effect of signal received power by changing the antenna gain and antenna type.The antenna used is omnidirectional and switched beam and gain varies from 5 to 15 dB.The GSM network is simulated for 6 users in Qualnet software.
Similar to Diversity techniques for wireless communication (20)
Submission Deadline: 30th September 2022
Acceptance Notification: Within Three Days’ time period
Online Publication: Within 24 Hrs. time Period
Expected Date of Dispatch of Printed Journal: 5th October 2022
MODELING AND ANALYSIS OF SURFACE ROUGHNESS AND WHITE LATER THICKNESS IN WIRE-...IAEME Publication
White layer thickness (WLT) formed and surface roughness in wire electric discharge turning (WEDT) of tungsten carbide composite has been made to model through response surface methodology (RSM). A Taguchi’s standard Design of experiments involving five input variables with three levels has been employed to establish a mathematical model between input parameters and responses. Percentage of cobalt content, spindle speed, Pulse on-time, wire feed and pulse off-time were changed during the experimental tests based on the Taguchi’s orthogonal array L27 (3^13). Analysis of variance (ANOVA) revealed that the mathematical models obtained can adequately describe performance within the parameters of the factors considered. There was a good agreement between the experimental and predicted values in this study.
A STUDY ON THE REASONS FOR TRANSGENDER TO BECOME ENTREPRENEURSIAEME Publication
The study explores the reasons for a transgender to become entrepreneurs. In this study transgender entrepreneur was taken as independent variable and reasons to become as dependent variable. Data were collected through a structured questionnaire containing a five point Likert Scale. The study examined the data of 30 transgender entrepreneurs in Salem Municipal Corporation of Tamil Nadu State, India. Simple Random sampling technique was used. Garrett Ranking Technique (Percentile Position, Mean Scores) was used as the analysis for the present study to identify the top 13 stimulus factors for establishment of trans entrepreneurial venture. Economic advancement of a nation is governed upon the upshot of a resolute entrepreneurial doings. The conception of entrepreneurship has stretched and materialized to the socially deflated uncharted sections of transgender community. Presently transgenders have smashed their stereotypes and are making recent headlines of achievements in various fields of our Indian society. The trans-community is gradually being observed in a new light and has been trying to achieve prospective growth in entrepreneurship. The findings of the research revealed that the optimistic changes are taking place to change affirmative societal outlook of the transgender for entrepreneurial ventureship. It also laid emphasis on other transgenders to renovate their traditional living. The paper also highlights that legislators, supervisory body should endorse an impartial canons and reforms in Tamil Nadu Transgender Welfare Board Association.
BROAD UNEXPOSED SKILLS OF TRANSGENDER ENTREPRENEURSIAEME Publication
Since ages gender difference is always a debatable theme whether caused by nature, evolution or environment. The birth of a transgender is dreadful not only for the child but also for their parents. The pain of living in the wrong physique and treated as second class victimized citizen is outrageous and fully harboured with vicious baseless negative scruples. For so long, social exclusion had perpetuated inequality and deprivation experiencing ingrained malign stigma and besieged victims of crime or violence across their life spans. They are pushed into the murky way of life with a source of eternal disgust, bereft sexual potency and perennial fear. Although they are highly visible but very little is known about them. The common public needs to comprehend the ravaged arrogance on these insensitive souls and assist in integrating them into the mainstream by offering equal opportunity, treat with humanity and respect their dignity. Entrepreneurship in the current age is endorsing the gender fairness movement. Unstable careers and economic inadequacy had inclined one of the gender variant people called Transgender to become entrepreneurs. These tiny budding entrepreneurs resulted in economic transition by means of employment, free from the clutches of stereotype jobs, raised standard of living and handful of financial empowerment. Besides all these inhibitions, they were able to witness a platform for skill set development that ignited them to enter into entrepreneurial domain. This paper epitomizes skill sets involved in trans-entrepreneurs of Thoothukudi Municipal Corporation of Tamil Nadu State and is a groundbreaking determination to sightsee various skills incorporated and the impact on entrepreneurship.
DETERMINANTS AFFECTING THE USER'S INTENTION TO USE MOBILE BANKING APPLICATIONSIAEME Publication
The banking and financial services industries are experiencing increased technology penetration. Among them, the banking industry has made technological advancements to better serve the general populace. The economy focused on transforming the banking sector's system into a cashless, paperless, and faceless one. The researcher wants to evaluate the user's intention for utilising a mobile banking application. The study also examines the variables affecting the user's behaviour intention when selecting specific applications for financial transactions. The researcher employed a well-structured questionnaire and a descriptive study methodology to gather the respondents' primary data utilising the snowball sampling technique. The study includes variables like performance expectations, effort expectations, social impact, enabling circumstances, and perceived risk. Each of the aforementioned variables has a major impact on how users utilise mobile banking applications. The outcome will assist the service provider in comprehending the user's history with mobile banking applications.
ANALYSE THE USER PREDILECTION ON GPAY AND PHONEPE FOR DIGITAL TRANSACTIONSIAEME Publication
Technology upgradation in banking sector took the economy to view that payment mode towards online transactions using mobile applications. This system enabled connectivity between banks, Merchant and user in a convenient mode. there are various applications used for online transactions such as Google pay, Paytm, freecharge, mobikiwi, oxygen, phonepe and so on and it also includes mobile banking applications. The study aimed at evaluating the predilection of the user in adopting digital transaction. The study is descriptive in nature. The researcher used random sample techniques to collect the data. The findings reveal that mobile applications differ with the quality of service rendered by Gpay and Phonepe. The researcher suggest the Phonepe application should focus on implementing the application should be user friendly interface and Gpay on motivating the users to feel the importance of request for money and modes of payments in the application.
VOICE BASED ATM FOR VISUALLY IMPAIRED USING ARDUINOIAEME Publication
The prototype of a voice-based ATM for visually impaired using Arduino is to help people who are blind. This uses RFID cards which contain users fingerprint encrypted on it and interacts with the users through voice commands. ATM operates when sensor detects the presence of one person in the cabin. After scanning the RFID card, it will ask to select the mode like –normal or blind. User can select the respective mode through voice input, if blind mode is selected the balance check or cash withdraw can be done through voice input. Normal mode procedure is same as the existing ATM.
IMPACT OF EMOTIONAL INTELLIGENCE ON HUMAN RESOURCE MANAGEMENT PRACTICES AMONG...IAEME Publication
There is increasing acceptability of emotional intelligence as a major factor in personality assessment and effective human resource management. Emotional intelligence as the ability to build capacity, empathize, co-operate, motivate and develop others cannot be divorced from both effective performance and human resource management systems. The human person is crucial in defining organizational leadership and fortunes in terms of challenges and opportunities and walking across both multinational and bilateral relationships. The growing complexity of the business world requires a great deal of self-confidence, integrity, communication, conflict and diversity management to keep the global enterprise within the paths of productivity and sustainability. Using the exploratory research design and 255 participants the result of this original study indicates strong positive correlation between emotional intelligence and effective human resource management. The paper offers suggestions on further studies between emotional intelligence and human capital development and recommends for conflict management as an integral part of effective human resource management.
VISUALISING AGING PARENTS & THEIR CLOSE CARERS LIFE JOURNEY IN AGING ECONOMYIAEME Publication
Our life journey, in general, is closely defined by the way we understand the meaning of why we coexist and deal with its challenges. As we develop the "inspiration economy", we could say that nearly all of the challenges we have faced are opportunities that help us to discover the rest of our journey. In this note paper, we explore how being faced with the opportunity of being a close carer for an aging parent with dementia brought intangible discoveries that changed our insight of the meaning of the rest of our life journey.
A STUDY ON THE IMPACT OF ORGANIZATIONAL CULTURE ON THE EFFECTIVENESS OF PERFO...IAEME Publication
The main objective of this study is to analyze the impact of aspects of Organizational Culture on the Effectiveness of the Performance Management System (PMS) in the Health Care Organization at Thanjavur. Organizational Culture and PMS play a crucial role in present-day organizations in achieving their objectives. PMS needs employees’ cooperation to achieve its intended objectives. Employees' cooperation depends upon the organization’s culture. The present study uses exploratory research to examine the relationship between the Organization's culture and the Effectiveness of the Performance Management System. The study uses a Structured Questionnaire to collect the primary data. For this study, Thirty-six non-clinical employees were selected from twelve randomly selected Health Care organizations at Thanjavur. Thirty-two fully completed questionnaires were received.
Living in 21st century in itself reminds all of us the necessity of police and its administration. As more and more we are entering into the modern society and culture, the more we require the services of the so called ‘Khaki Worthy’ men i.e., the police personnel. Whether we talk of Indian police or the other nation’s police, they all have the same recognition as they have in India. But as already mentioned, their services and requirements are different after the like 26th November, 2008 incidents, where they without saving their own lives has sacrificed themselves without any hitch and without caring about their respective family members and wards. In other words, they are like our heroes and mentors who can guide us from the darkness of fear, militancy, corruption and other dark sides of life and so on. Now the question arises, if Gandhi would have been alive today, what would have been his reaction/opinion to the police and its functioning? Would he have some thing different in his mind now what he had been in his mind before the partition or would he be going to start some Satyagraha in the form of some improvement in the functioning of the police administration? Really these questions or rather night mares can come to any one’s mind, when there is too much confusion is prevailing in our minds, when there is too much corruption in the society and when the polices working is also in the questioning because of one or the other case throughout the India. It is matter of great concern that we have to thing over our administration and our practical approach because the police personals are also like us, they are part and parcel of our society and among one of us, so why we all are pin pointing towards them.
A STUDY ON TALENT MANAGEMENT AND ITS IMPACT ON EMPLOYEE RETENTION IN SELECTED...IAEME Publication
The goal of this study was to see how talent management affected employee retention in the selected IT organizations in Chennai. The fundamental issue was the difficulty to attract, hire, and retain talented personnel who perform well and the gap between supply and demand of talent acquisition and retaining them within the firms. The study's main goals were to determine the impact of talent management on employee retention in IT companies in Chennai, investigate talent management strategies that IT companies could use to improve talent acquisition, performance management, career planning and formulate retention strategies that the IT firms could use. The respondents were given a structured close-ended questionnaire with the 5 Point Likert Scale as part of the study's quantitative research design. The target population consisted of 289 IT professionals. The questionnaires were distributed and collected by the researcher directly. The Statistical Package for Social Sciences (SPSS) was used to collect and analyse the questionnaire responses. Hypotheses that were formulated for the various areas of the study were tested using a variety of statistical tests. The key findings of the study suggested that talent management had an impact on employee retention. The studies also found that there is a clear link between the implementation of talent management and retention measures. Management should provide enough training and development for employees, clarify job responsibilities, provide adequate remuneration packages, and recognise employees for exceptional performance.
ATTRITION IN THE IT INDUSTRY DURING COVID-19 PANDEMIC: LINKING EMOTIONAL INTE...IAEME Publication
Globally, Millions of dollars were spent by the organizations for employing skilled Information Technology (IT) professionals. It is costly to replace unskilled employees with IT professionals possessing technical skills and competencies that aid in interconnecting the business processes. The organization’s employment tactics were forced to alter by globalization along with technological innovations as they consistently diminish to remain lean, outsource to concentrate on core competencies along with restructuring/reallocate personnel to gather efficiency. As other jobs, organizations or professions have become reasonably more appropriate in a shifting employment landscape, the above alterations trigger both involuntary as well as voluntary turnover. The employee view on jobs is also afflicted by the COVID-19 pandemic along with the employee-driven labour market. So, having effective strategies is necessary to tackle the withdrawal rate of employees. By associating Emotional Intelligence (EI) along with Talent Management (TM) in the IT industry, the rise in attrition rate was analyzed in this study. Only 303 respondents were collected out of 350 participants to whom questionnaires were distributed. From the employees of IT organizations located in Bangalore (India), the data were congregated. A simple random sampling methodology was employed to congregate data as of the respondents. Generating the hypothesis along with testing is eventuated. The effect of EI and TM along with regression analysis between TM and EI was analyzed. The outcomes indicated that employee and Organizational Performance (OP) were elevated by effective EI along with TM.
INFLUENCE OF TALENT MANAGEMENT PRACTICES ON ORGANIZATIONAL PERFORMANCE A STUD...IAEME Publication
By implementing talent management strategy, organizations would have the option to retain their skilled professionals while additionally working on their overall performance. It is the course of appropriately utilizing the ideal individuals, setting them up for future top positions, exploring and dealing with their performance, and holding them back from leaving the organization. It is employee performance that determines the success of every organization. The firm quickly obtains an upper hand over its rivals in the event that its employees having particular skills that cannot be duplicated by the competitors. Thus, firms are centred on creating successful talent management practices and processes to deal with the unique human resources. Firms are additionally endeavouring to keep their top/key staff since on the off chance that they leave; the whole store of information leaves the firm's hands. The study's objective was to determine the impact of talent management on organizational performance among the selected IT organizations in Chennai. The study recommends that talent management limitedly affects performance. On the off chance that this talent is appropriately management and implemented properly, organizations might benefit as much as possible from their maintained assets to support development and productivity, both monetarily and non-monetarily.
A STUDY OF VARIOUS TYPES OF LOANS OF SELECTED PUBLIC AND PRIVATE SECTOR BANKS...IAEME Publication
Banking regulations act of India, 1949 defines banking as “acceptance of deposits for the purpose of lending or investment from the public, repayment on demand or otherwise and withdrawable through cheques, drafts order or otherwise”, the major participants of the Indian financial system are commercial banks, the financial institution encompassing term lending institutions. Investments institutions, specialized financial institution and the state level development banks, non banking financial companies (NBFC) and other market intermediaries such has the stock brokers and money lenders are among the oldest of the certain variants of NBFC and the oldest market participants. The asset quality of banks is one of the most important indicators of their financial health. The Indian banking sector has been facing severe problems of increasing Non- Performing Assets (NPAs). The NPAs growth directly and indirectly affects the quality of assets and profitability of banks. It also shows the efficiency of banks credit risk management and the recovery effectiveness. NPA do not generate any income, whereas, the bank is required to make provisions for such as assets that why is a double edge weapon. This paper outlines the concept of quality of bank loans of different types like Housing, Agriculture and MSME loans in state Haryana of selected public and private sector banks. This study is highlighting problems associated with the role of commercial bank in financing Small and Medium Scale Enterprises (SME). The overall objective of the research was to assess the effect of the financing provisions existing for the setting up and operations of MSMEs in the country and to generate recommendations for more robust financing mechanisms for successful operation of the MSMEs, in turn understanding the impact of MSME loans on financial institutions due to NPA. There are many research conducted on the topic of Non- Performing Assets (NPA) Management, concerning particular bank, comparative study of public and private banks etc. In this paper the researcher is considering the aggregate data of selected public sector and private sector banks and attempts to compare the NPA of Housing, Agriculture and MSME loans in state Haryana of public and private sector banks. The tools used in the study are average and Anova test and variance. The findings reveal that NPA is common problem for both public and private sector banks and is associated with all types of loans either that is housing loans, agriculture loans and loans to SMES. NPAs of both public and private sector banks show the increasing trend. In 2010-11 GNPA of public and private sector were at same level it was 2% but after 2010-11 it increased in many fold and at present there is GNPA in some more than 15%. It shows the dark area of Indian banking sector.
EXPERIMENTAL STUDY OF MECHANICAL AND TRIBOLOGICAL RELATION OF NYLON/BaSO4 POL...IAEME Publication
An experiment conducted in this study found that BaSO4 changed Nylon 6's mechanical properties. By changing the weight ratios, BaSO4 was used to make Nylon 6. This Researcher looked into how hard Nylon-6/BaSO4 composites are and how well they wear. Experiments were done based on Taguchi design L9. Nylon-6/BaSO4 composites can be tested for their hardness number using a Rockwell hardness testing apparatus. On Nylon/BaSO4, the wear behavior was measured by a wear monitor, pinon-disc friction by varying reinforcement, sliding speed, and sliding distance, and the microstructure of the crack surfaces was observed by SEM. This study provides significant contributions to ultimate strength by increasing BaSO4 content up to 16% in the composites, and sliding speed contributes 72.45% to the wear rate
ROLE OF SOCIAL ENTREPRENEURSHIP IN RURAL DEVELOPMENT OF INDIA - PROBLEMS AND ...IAEME Publication
The majority of the population in India lives in villages. The village is the back bone of the country. Village or rural industries play an important role in the national economy, particularly in the rural development. Developing the rural economy is one of the key indicators towards a country’s success. Whether it be the need to look after the welfare of the farmers or invest in rural infrastructure, Governments have to ensure that rural development isn’t compromised. The economic development of our country largely depends on the progress of rural areas and the standard of living of rural masses. Village or rural industries play an important role in the national economy, particularly in the rural development. Rural entrepreneurship is based on stimulating local entrepreneurial talent and the subsequent growth of indigenous enterprises. It recognizes opportunity in the rural areas and accelerates a unique blend of resources either inside or outside of agriculture. Rural entrepreneurship brings an economic value to the rural sector by creating new methods of production, new markets, new products and generate employment opportunities thereby ensuring continuous rural development. Social Entrepreneurship has the direct and primary objective of serving the society along with the earning profits. So, social entrepreneurship is different from the economic entrepreneurship as its basic objective is not to earn profits but for providing innovative solutions to meet the society needs which are not taken care by majority of the entrepreneurs as they are in the business for profit making as a sole objective. So, the Social Entrepreneurs have the huge growth potential particularly in the developing countries like India where we have huge societal disparities in terms of the financial positions of the population. Still 22 percent of the Indian population is below the poverty line and also there is disparity among the rural & urban population in terms of families living under BPL. 25.7 percent of the rural population & 13.7 percent of the urban population is under BPL which clearly shows the disparity of the poor people in the rural and urban areas. The need to develop social entrepreneurship in agriculture is dictated by a large number of social problems. Such problems include low living standards, unemployment, and social tension. The reasons that led to the emergence of the practice of social entrepreneurship are the above factors. The research problem lays upon disclosing the importance of role of social entrepreneurship in rural development of India. The paper the tendencies of social entrepreneurship in India, to present successful examples of such business for providing recommendations how to improve situation in rural areas in terms of social entrepreneurship development. Indian government has made some steps towards development of social enterprises, social entrepreneurship, and social in- novation, but a lot remains to be improved.
OPTIMAL RECONFIGURATION OF POWER DISTRIBUTION RADIAL NETWORK USING HYBRID MET...IAEME Publication
Distribution system is a critical link between the electric power distributor and the consumers. Most of the distribution networks commonly used by the electric utility is the radial distribution network. However in this type of network, it has technical issues such as enormous power losses which affect the quality of the supply. Nowadays, the introduction of Distributed Generation (DG) units in the system help improve and support the voltage profile of the network as well as the performance of the system components through power loss mitigation. In this study network reconfiguration was done using two meta-heuristic algorithms Particle Swarm Optimization and Gravitational Search Algorithm (PSO-GSA) to enhance power quality and voltage profile in the system when simultaneously applied with the DG units. Backward/Forward Sweep Method was used in the load flow analysis and simulated using the MATLAB program. Five cases were considered in the Reconfiguration based on the contribution of DG units. The proposed method was tested using IEEE 33 bus system. Based on the results, there was a voltage profile improvement in the system from 0.9038 p.u. to 0.9594 p.u.. The integration of DG in the network also reduced power losses from 210.98 kW to 69.3963 kW. Simulated results are drawn to show the performance of each case.
APPLICATION OF FRUGAL APPROACH FOR PRODUCTIVITY IMPROVEMENT - A CASE STUDY OF...IAEME Publication
Manufacturing industries have witnessed an outburst in productivity. For productivity improvement manufacturing industries are taking various initiatives by using lean tools and techniques. However, in different manufacturing industries, frugal approach is applied in product design and services as a tool for improvement. Frugal approach contributed to prove less is more and seems indirectly contributing to improve productivity. Hence, there is need to understand status of frugal approach application in manufacturing industries. All manufacturing industries are trying hard and putting continuous efforts for competitive existence. For productivity improvements, manufacturing industries are coming up with different effective and efficient solutions in manufacturing processes and operations. To overcome current challenges, manufacturing industries have started using frugal approach in product design and services. For this study, methodology adopted with both primary and secondary sources of data. For primary source interview and observation technique is used and for secondary source review has done based on available literatures in website, printed magazines, manual etc. An attempt has made for understanding application of frugal approach with the study of manufacturing industry project. Manufacturing industry selected for this project study is Mahindra and Mahindra Ltd. This paper will help researcher to find the connections between the two concepts productivity improvement and frugal approach. This paper will help to understand significance of frugal approach for productivity improvement in manufacturing industry. This will also help to understand current scenario of frugal approach in manufacturing industry. In manufacturing industries various process are involved to deliver the final product. In the process of converting input in to output through manufacturing process productivity plays very critical role. Hence this study will help to evolve status of frugal approach in productivity improvement programme. The notion of frugal can be viewed as an approach towards productivity improvement in manufacturing industries.
A MULTIPLE – CHANNEL QUEUING MODELS ON FUZZY ENVIRONMENTIAEME Publication
In this paper, we investigated a queuing model of fuzzy environment-based a multiple channel queuing model (M/M/C) ( /FCFS) and study its performance under realistic conditions. It applies a nonagonal fuzzy number to analyse the relevant performance of a multiple channel queuing model (M/M/C) ( /FCFS). Based on the sub interval average ranking method for nonagonal fuzzy number, we convert fuzzy number to crisp one. Numerical results reveal that the efficiency of this method. Intuitively, the fuzzy environment adapts well to a multiple channel queuing models (M/M/C) ( /FCFS) are very well.
Northern Engraving | Nameplate Manufacturing Process - 2024Northern Engraving
Manufacturing custom quality metal nameplates and badges involves several standard operations. Processes include sheet prep, lithography, screening, coating, punch press and inspection. All decoration is completed in the flat sheet with adhesive and tooling operations following. The possibilities for creating unique durable nameplates are endless. How will you create your brand identity? We can help!
inQuba Webinar Mastering Customer Journey Management with Dr Graham HillLizaNolte
HERE IS YOUR WEBINAR CONTENT! 'Mastering Customer Journey Management with Dr. Graham Hill'. We hope you find the webinar recording both insightful and enjoyable.
In this webinar, we explored essential aspects of Customer Journey Management and personalization. Here’s a summary of the key insights and topics discussed:
Key Takeaways:
Understanding the Customer Journey: Dr. Hill emphasized the importance of mapping and understanding the complete customer journey to identify touchpoints and opportunities for improvement.
Personalization Strategies: We discussed how to leverage data and insights to create personalized experiences that resonate with customers.
Technology Integration: Insights were shared on how inQuba’s advanced technology can streamline customer interactions and drive operational efficiency.
Fueling AI with Great Data with Airbyte WebinarZilliz
This talk will focus on how to collect data from a variety of sources, leveraging this data for RAG and other GenAI use cases, and finally charting your course to productionalization.
Your One-Stop Shop for Python Success: Top 10 US Python Development Providersakankshawande
Simplify your search for a reliable Python development partner! This list presents the top 10 trusted US providers offering comprehensive Python development services, ensuring your project's success from conception to completion.
Conversational agents, or chatbots, are increasingly used to access all sorts of services using natural language. While open-domain chatbots - like ChatGPT - can converse on any topic, task-oriented chatbots - the focus of this paper - are designed for specific tasks, like booking a flight, obtaining customer support, or setting an appointment. Like any other software, task-oriented chatbots need to be properly tested, usually by defining and executing test scenarios (i.e., sequences of user-chatbot interactions). However, there is currently a lack of methods to quantify the completeness and strength of such test scenarios, which can lead to low-quality tests, and hence to buggy chatbots.
To fill this gap, we propose adapting mutation testing (MuT) for task-oriented chatbots. To this end, we introduce a set of mutation operators that emulate faults in chatbot designs, an architecture that enables MuT on chatbots built using heterogeneous technologies, and a practical realisation as an Eclipse plugin. Moreover, we evaluate the applicability, effectiveness and efficiency of our approach on open-source chatbots, with promising results.
5th LF Energy Power Grid Model Meet-up SlidesDanBrown980551
5th Power Grid Model Meet-up
It is with great pleasure that we extend to you an invitation to the 5th Power Grid Model Meet-up, scheduled for 6th June 2024. This event will adopt a hybrid format, allowing participants to join us either through an online Mircosoft Teams session or in person at TU/e located at Den Dolech 2, Eindhoven, Netherlands. The meet-up will be hosted by Eindhoven University of Technology (TU/e), a research university specializing in engineering science & technology.
Power Grid Model
The global energy transition is placing new and unprecedented demands on Distribution System Operators (DSOs). Alongside upgrades to grid capacity, processes such as digitization, capacity optimization, and congestion management are becoming vital for delivering reliable services.
Power Grid Model is an open source project from Linux Foundation Energy and provides a calculation engine that is increasingly essential for DSOs. It offers a standards-based foundation enabling real-time power systems analysis, simulations of electrical power grids, and sophisticated what-if analysis. In addition, it enables in-depth studies and analysis of the electrical power grid’s behavior and performance. This comprehensive model incorporates essential factors such as power generation capacity, electrical losses, voltage levels, power flows, and system stability.
Power Grid Model is currently being applied in a wide variety of use cases, including grid planning, expansion, reliability, and congestion studies. It can also help in analyzing the impact of renewable energy integration, assessing the effects of disturbances or faults, and developing strategies for grid control and optimization.
What to expect
For the upcoming meetup we are organizing, we have an exciting lineup of activities planned:
-Insightful presentations covering two practical applications of the Power Grid Model.
-An update on the latest advancements in Power Grid -Model technology during the first and second quarters of 2024.
-An interactive brainstorming session to discuss and propose new feature requests.
-An opportunity to connect with fellow Power Grid Model enthusiasts and users.
[OReilly Superstream] Occupy the Space: A grassroots guide to engineering (an...Jason Yip
The typical problem in product engineering is not bad strategy, so much as “no strategy”. This leads to confusion, lack of motivation, and incoherent action. The next time you look for a strategy and find an empty space, instead of waiting for it to be filled, I will show you how to fill it in yourself. If you’re wrong, it forces a correction. If you’re right, it helps create focus. I’ll share how I’ve approached this in the past, both what works and lessons for what didn’t work so well.
Session 1 - Intro to Robotic Process Automation.pdfUiPathCommunity
👉 Check out our full 'Africa Series - Automation Student Developers (EN)' page to register for the full program:
https://bit.ly/Automation_Student_Kickstart
In this session, we shall introduce you to the world of automation, the UiPath Platform, and guide you on how to install and setup UiPath Studio on your Windows PC.
📕 Detailed agenda:
What is RPA? Benefits of RPA?
RPA Applications
The UiPath End-to-End Automation Platform
UiPath Studio CE Installation and Setup
💻 Extra training through UiPath Academy:
Introduction to Automation
UiPath Business Automation Platform
Explore automation development with UiPath Studio
👉 Register here for our upcoming Session 2 on June 20: Introduction to UiPath Studio Fundamentals: https://community.uipath.com/events/details/uipath-lagos-presents-session-2-introduction-to-uipath-studio-fundamentals/
zkStudyClub - LatticeFold: A Lattice-based Folding Scheme and its Application...Alex Pruden
Folding is a recent technique for building efficient recursive SNARKs. Several elegant folding protocols have been proposed, such as Nova, Supernova, Hypernova, Protostar, and others. However, all of them rely on an additively homomorphic commitment scheme based on discrete log, and are therefore not post-quantum secure. In this work we present LatticeFold, the first lattice-based folding protocol based on the Module SIS problem. This folding protocol naturally leads to an efficient recursive lattice-based SNARK and an efficient PCD scheme. LatticeFold supports folding low-degree relations, such as R1CS, as well as high-degree relations, such as CCS. The key challenge is to construct a secure folding protocol that works with the Ajtai commitment scheme. The difficulty, is ensuring that extracted witnesses are low norm through many rounds of folding. We present a novel technique using the sumcheck protocol to ensure that extracted witnesses are always low norm no matter how many rounds of folding are used. Our evaluation of the final proof system suggests that it is as performant as Hypernova, while providing post-quantum security.
Paper Link: https://eprint.iacr.org/2024/257
Skybuffer SAM4U tool for SAP license adoptionTatiana Kojar
Manage and optimize your license adoption and consumption with SAM4U, an SAP free customer software asset management tool.
SAM4U, an SAP complimentary software asset management tool for customers, delivers a detailed and well-structured overview of license inventory and usage with a user-friendly interface. We offer a hosted, cost-effective, and performance-optimized SAM4U setup in the Skybuffer Cloud environment. You retain ownership of the system and data, while we manage the ABAP 7.58 infrastructure, ensuring fixed Total Cost of Ownership (TCO) and exceptional services through the SAP Fiori interface.
Northern Engraving | Modern Metal Trim, Nameplates and Appliance PanelsNorthern Engraving
What began over 115 years ago as a supplier of precision gauges to the automotive industry has evolved into being an industry leader in the manufacture of product branding, automotive cockpit trim and decorative appliance trim. Value-added services include in-house Design, Engineering, Program Management, Test Lab and Tool Shops.
Introduction of Cybersecurity with OSS at Code Europe 2024Hiroshi SHIBATA
I develop the Ruby programming language, RubyGems, and Bundler, which are package managers for Ruby. Today, I will introduce how to enhance the security of your application using open-source software (OSS) examples from Ruby and RubyGems.
The first topic is CVE (Common Vulnerabilities and Exposures). I have published CVEs many times. But what exactly is a CVE? I'll provide a basic understanding of CVEs and explain how to detect and handle vulnerabilities in OSS.
Next, let's discuss package managers. Package managers play a critical role in the OSS ecosystem. I'll explain how to manage library dependencies in your application.
I'll share insights into how the Ruby and RubyGems core team works to keep our ecosystem safe. By the end of this talk, you'll have a better understanding of how to safeguard your code.
How information systems are built or acquired puts information, which is what they should be about, in a secondary place. Our language adapted accordingly, and we no longer talk about information systems but applications. Applications evolved in a way to break data into diverse fragments, tightly coupled with applications and expensive to integrate. The result is technical debt, which is re-paid by taking even bigger "loans", resulting in an ever-increasing technical debt. Software engineering and procurement practices work in sync with market forces to maintain this trend. This talk demonstrates how natural this situation is. The question is: can something be done to reverse the trend?
In the realm of cybersecurity, offensive security practices act as a critical shield. By simulating real-world attacks in a controlled environment, these techniques expose vulnerabilities before malicious actors can exploit them. This proactive approach allows manufacturers to identify and fix weaknesses, significantly enhancing system security.
This presentation delves into the development of a system designed to mimic Galileo's Open Service signal using software-defined radio (SDR) technology. We'll begin with a foundational overview of both Global Navigation Satellite Systems (GNSS) and the intricacies of digital signal processing.
The presentation culminates in a live demonstration. We'll showcase the manipulation of Galileo's Open Service pilot signal, simulating an attack on various software and hardware systems. This practical demonstration serves to highlight the potential consequences of unaddressed vulnerabilities, emphasizing the importance of offensive security practices in safeguarding critical infrastructure.
"Choosing proper type of scaling", Olena SyrotaFwdays
Imagine an IoT processing system that is already quite mature and production-ready and for which client coverage is growing and scaling and performance aspects are life and death questions. The system has Redis, MongoDB, and stream processing based on ksqldb. In this talk, firstly, we will analyze scaling approaches and then select the proper ones for our system.
Must Know Postgres Extension for DBA and Developer during MigrationMydbops
Mydbops Opensource Database Meetup 16
Topic: Must-Know PostgreSQL Extensions for Developers and DBAs During Migration
Speaker: Deepak Mahto, Founder of DataCloudGaze Consulting
Date & Time: 8th June | 10 AM - 1 PM IST
Venue: Bangalore International Centre, Bangalore
Abstract: Discover how PostgreSQL extensions can be your secret weapon! This talk explores how key extensions enhance database capabilities and streamline the migration process for users moving from other relational databases like Oracle.
Key Takeaways:
* Learn about crucial extensions like oracle_fdw, pgtt, and pg_audit that ease migration complexities.
* Gain valuable strategies for implementing these extensions in PostgreSQL to achieve license freedom.
* Discover how these key extensions can empower both developers and DBAs during the migration process.
* Don't miss this chance to gain practical knowledge from an industry expert and stay updated on the latest open-source database trends.
Mydbops Managed Services specializes in taking the pain out of database management while optimizing performance. Since 2015, we have been providing top-notch support and assistance for the top three open-source databases: MySQL, MongoDB, and PostgreSQL.
Our team offers a wide range of services, including assistance, support, consulting, 24/7 operations, and expertise in all relevant technologies. We help organizations improve their database's performance, scalability, efficiency, and availability.
Contact us: info@mydbops.com
Visit: https://www.mydbops.com/
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For more details and updates, please follow up the below links.
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