Power Quality Improvement And Mitigation Of Voltage Sag And Current Swell Usi...IJERA Editor
Modern power utilities have to respond to a number of challenges such as growth of electricity demand specially in non-linear loads in power grids, consequently, That higher power quality should be considered. In this paper, DPFC which is similar to unified power flow controller (UPFC) in structure, which is used to mitigate the voltage sag and swell as a power quality issue. Unlike UPFC, the common dc-link in DPFC, between the shunt and series converter devices should be eliminated and three-phase series converter is divided to several single-phase series distributed converters through the power transmission line. And also to detect the voltage sags and find out the three single-phase reference voltages of DPFC, the synchronous reference frame method is proposed. Application of DPFC in power quality enhancement is simulated in Mat lab/Simulink environment which show the effectiveness of the proposed structure
Road Traffic Noise Level Assessment at an Institutional AreaIJERA Editor
Unplanned and rapid urbanization, industrialization, increasing number of vehicles, poor traffic management, poor road condition etc. are the major causes of higher noise levels in most of the Indian cities. Prolonged exposure to higher noise levels can lead to irreversible Noise Induced Hearing Loss (NIHL). Noise-induced hearing loss is contributing one-third to the total persons suffering from hearing loss in every country in the world. The present study aims at measuring the noise levels in the university campus to analyze the current situation and suggesting noise control measures to be adopted in University campus and along MMA Jauhar Marg. The numbers of vehicles were counted during November 17-21, 2012 and noise levels were measured at various pre decided locations. The traffic load in horizon years 2013, 2017, 2022, 2027 and 2032 on the MMA Jauhar Marg Road is predicted on the basis of observed traffic data and expected annual growth rate as 8.0% for pre Metro and 3.5% for post Metro. The noise levels were measured using Larson Davis Model 831 Class 1 Sound Level Meter on both sides of road at foot paths along MMA Jauhar Marg and at various receptor locations inside the different buildings in the university campus. Model RLS-90 is used for prediction of noise levels. The prediction of metro noise is carried out using statistical calculations. The combined noise levels were compared with standard criteria for silent zone and found on higher side. Installation of environment noise barrier is suggested as one of the noise control measure to be adopted along MMA Jauhar Marg and along metro viaduct to save students and staff from exposure of higher noise levels.
Freshness is an important quality for many food products. Keeping foods fresh helps ensure they are safe to eat and taste good. Proper storage and handling can help maintain the freshness of foods.
Computational approach of the homeostatic turnover of memory B cells.IJERA Editor
In this paper, a discrete mathematical model inspired by control mechanisms is used to explore the factors potentially responsible for maximum immunization capacity in mammals. The results have been discussed in light of recent work, and refer to the adoption of parameter values chosen among data gathered from the literature. The model used in this study took into consideration that the immune system is a network of molecules and cells that can recognize itself.
Shuaa Albalawi is a Saudi national seeking a challenging career to develop her skills. She currently works as an executive assistant for Jabal Omar Development Co., where her responsibilities include producing information, conserving the executive's time, maintaining schedules, representing the executive, welcoming guests, and completing projects. Previously, she worked as a manager assistant for The Core of Modern Art, where her duties included assisting with strategy, operations, objectives, staff, budgets, client communications, and reports. She also had an internship with the United Nations where she conducted quantitative analysis and recommendations. Albalawi earned a bachelor's degree in political science from California State University, Northridge.
A Performance Comparison of Routing Protocols for Ad Hoc NetworksIJERA Editor
Mobile Ad hoc Network (MANET) is a collection of mobile nodes in which the wireless links are frequently broken down due to mobility and dynamic infrastructure. Routing is a significant issue and challenge in ad hoc networks. Many routing protocols have been proposed like OLSR, AODV so far to improve the routing performance and reliability. In this paper, we describe the Optimized Link State Routing Protocol (OLSR) and the Ad hoc On-Demand Distance Vector (AODV). We evaluate their performance through exhaustive simulations using the Network Simulator 2 (ns2) by varying conditions (node mobility, network density).
Arm Robot Surveillance Using Dual Tone Multiple Frequency TechnologyIJERA Editor
Surveillance place a pivotal role in addressing a wide range of security challenges .In the present paper we propose a Dual Tone Multiple Frequency ( DTMF) based Robot with video surveillance. In the proposed model a DTMF based Robot with video surveillance with multiple key functions, Arm picker and security system was implemented. Master and slave concept using 3 Microcontroller and motor driver IC to drive motors was implemented and belt wheel platform was used to move the robot from one place to another. Multiple key functions were used to perform more functions and a camera for surveillance .The robot can navigate with the help of the user.
Experimental investigation of damping force of twin tube shock absorberIJERA Editor
A shock absorber is a mechanical device to damp shock impulse and convert kinetic energy into thermal energy. The damping effect of shock absorber depends on damping force and damping force is affected by various process parameters. In this analysis three process parameters damping diameter(A), number of holes(B) and suspension velocity(C) were considered and their effect on damping force of shock absorber was studied and accordingly suitable orthogonal array was selected by taguchi method. Experiment conducted on servo hydraulic testing machine and after conducting experiments damping force was measured and with the help of S/N ratio, ANOVA, Regression analysis optimum parameter values can be obtained and confirmation experiments was carried out. Twin tube shock absorber was used to carry out experimentation.
Optimization of Extraction Parameters for Natural Dye from Pterocarpus santal...IJERA Editor
Pterocarpus species has been admired for centuries for its dye, beautiful color, hardness and durability. The present study deals with the extraction of natural dye from Pterocarpus wood materials. Response surface methodology was used to study the optimal conditions for the extraction of dye. Factors such as extraction temperature, extraction time, and solid to liquid ratio were identified to be significantly affecting natural dye extraction efficiency. By using three-level three-factor Box-Behnken design, the optimized conditions for dye extraction by different techniques such as Solvent, Ultrasonic and Microwave extraction method. Microwave assisted extraction method showed the highest natural dye yield percentage which is 50.0 for ethyl acetate solvent and 50.2 for methanol solvent.
Mmc1 2 The Lancet - Supplementary appendix 10/15/2014John Redaelli
This appendix formed part of the original submission and has been peer reviewed.
We post it as supplied by the authors.
Supplement to: Schwartz SD, Regillo CD, Lam BL, et al. Human embryonic stem
cell-derived retinal pigment epithelium in patients with age-related macular degeneration
and Stargardt’s macular dystrophy: follow-up of two open-label phase 1/2 studies. Lancet
2014; published online Oct 15. http://dx.doi.org/10.1016/S0140-6736(14)61376-3.
Design and Implementation of Submicron Level 10T Full Adder in ALU Using Cell...IJERA Editor
As technology scales into the nanometer regime leakage current, active power, delay and area are becoming important metric for the analysis and design of complex circuits. The main concern in mobile and battery based systems are leakage current and power dissipation. A transistor resizing approach for 10 transistor single bit full adder cells is used to determine optimal sleep transistor size which reduces power dissipation and leakage current. A submicron level 10-transistor single bit full adder cell is considered to achieve low leakage current, reduced power dissipation and high speed. In this paper initially 10T full adder cell is designed with submicron technique and later this is employed to design an ALU adder unit. The modified ALU is simulated and synthesized successfully on cadence 180nm technology.
Power Quality Improvement And Mitigation Of Voltage Sag And Current Swell Usi...IJERA Editor
Modern power utilities have to respond to a number of challenges such as growth of electricity demand specially in non-linear loads in power grids, consequently, That higher power quality should be considered. In this paper, DPFC which is similar to unified power flow controller (UPFC) in structure, which is used to mitigate the voltage sag and swell as a power quality issue. Unlike UPFC, the common dc-link in DPFC, between the shunt and series converter devices should be eliminated and three-phase series converter is divided to several single-phase series distributed converters through the power transmission line. And also to detect the voltage sags and find out the three single-phase reference voltages of DPFC, the synchronous reference frame method is proposed. Application of DPFC in power quality enhancement is simulated in Mat lab/Simulink environment which show the effectiveness of the proposed structure
Road Traffic Noise Level Assessment at an Institutional AreaIJERA Editor
Unplanned and rapid urbanization, industrialization, increasing number of vehicles, poor traffic management, poor road condition etc. are the major causes of higher noise levels in most of the Indian cities. Prolonged exposure to higher noise levels can lead to irreversible Noise Induced Hearing Loss (NIHL). Noise-induced hearing loss is contributing one-third to the total persons suffering from hearing loss in every country in the world. The present study aims at measuring the noise levels in the university campus to analyze the current situation and suggesting noise control measures to be adopted in University campus and along MMA Jauhar Marg. The numbers of vehicles were counted during November 17-21, 2012 and noise levels were measured at various pre decided locations. The traffic load in horizon years 2013, 2017, 2022, 2027 and 2032 on the MMA Jauhar Marg Road is predicted on the basis of observed traffic data and expected annual growth rate as 8.0% for pre Metro and 3.5% for post Metro. The noise levels were measured using Larson Davis Model 831 Class 1 Sound Level Meter on both sides of road at foot paths along MMA Jauhar Marg and at various receptor locations inside the different buildings in the university campus. Model RLS-90 is used for prediction of noise levels. The prediction of metro noise is carried out using statistical calculations. The combined noise levels were compared with standard criteria for silent zone and found on higher side. Installation of environment noise barrier is suggested as one of the noise control measure to be adopted along MMA Jauhar Marg and along metro viaduct to save students and staff from exposure of higher noise levels.
Freshness is an important quality for many food products. Keeping foods fresh helps ensure they are safe to eat and taste good. Proper storage and handling can help maintain the freshness of foods.
Computational approach of the homeostatic turnover of memory B cells.IJERA Editor
In this paper, a discrete mathematical model inspired by control mechanisms is used to explore the factors potentially responsible for maximum immunization capacity in mammals. The results have been discussed in light of recent work, and refer to the adoption of parameter values chosen among data gathered from the literature. The model used in this study took into consideration that the immune system is a network of molecules and cells that can recognize itself.
Shuaa Albalawi is a Saudi national seeking a challenging career to develop her skills. She currently works as an executive assistant for Jabal Omar Development Co., where her responsibilities include producing information, conserving the executive's time, maintaining schedules, representing the executive, welcoming guests, and completing projects. Previously, she worked as a manager assistant for The Core of Modern Art, where her duties included assisting with strategy, operations, objectives, staff, budgets, client communications, and reports. She also had an internship with the United Nations where she conducted quantitative analysis and recommendations. Albalawi earned a bachelor's degree in political science from California State University, Northridge.
A Performance Comparison of Routing Protocols for Ad Hoc NetworksIJERA Editor
Mobile Ad hoc Network (MANET) is a collection of mobile nodes in which the wireless links are frequently broken down due to mobility and dynamic infrastructure. Routing is a significant issue and challenge in ad hoc networks. Many routing protocols have been proposed like OLSR, AODV so far to improve the routing performance and reliability. In this paper, we describe the Optimized Link State Routing Protocol (OLSR) and the Ad hoc On-Demand Distance Vector (AODV). We evaluate their performance through exhaustive simulations using the Network Simulator 2 (ns2) by varying conditions (node mobility, network density).
Arm Robot Surveillance Using Dual Tone Multiple Frequency TechnologyIJERA Editor
Surveillance place a pivotal role in addressing a wide range of security challenges .In the present paper we propose a Dual Tone Multiple Frequency ( DTMF) based Robot with video surveillance. In the proposed model a DTMF based Robot with video surveillance with multiple key functions, Arm picker and security system was implemented. Master and slave concept using 3 Microcontroller and motor driver IC to drive motors was implemented and belt wheel platform was used to move the robot from one place to another. Multiple key functions were used to perform more functions and a camera for surveillance .The robot can navigate with the help of the user.
Experimental investigation of damping force of twin tube shock absorberIJERA Editor
A shock absorber is a mechanical device to damp shock impulse and convert kinetic energy into thermal energy. The damping effect of shock absorber depends on damping force and damping force is affected by various process parameters. In this analysis three process parameters damping diameter(A), number of holes(B) and suspension velocity(C) were considered and their effect on damping force of shock absorber was studied and accordingly suitable orthogonal array was selected by taguchi method. Experiment conducted on servo hydraulic testing machine and after conducting experiments damping force was measured and with the help of S/N ratio, ANOVA, Regression analysis optimum parameter values can be obtained and confirmation experiments was carried out. Twin tube shock absorber was used to carry out experimentation.
Optimization of Extraction Parameters for Natural Dye from Pterocarpus santal...IJERA Editor
Pterocarpus species has been admired for centuries for its dye, beautiful color, hardness and durability. The present study deals with the extraction of natural dye from Pterocarpus wood materials. Response surface methodology was used to study the optimal conditions for the extraction of dye. Factors such as extraction temperature, extraction time, and solid to liquid ratio were identified to be significantly affecting natural dye extraction efficiency. By using three-level three-factor Box-Behnken design, the optimized conditions for dye extraction by different techniques such as Solvent, Ultrasonic and Microwave extraction method. Microwave assisted extraction method showed the highest natural dye yield percentage which is 50.0 for ethyl acetate solvent and 50.2 for methanol solvent.
Mmc1 2 The Lancet - Supplementary appendix 10/15/2014John Redaelli
This appendix formed part of the original submission and has been peer reviewed.
We post it as supplied by the authors.
Supplement to: Schwartz SD, Regillo CD, Lam BL, et al. Human embryonic stem
cell-derived retinal pigment epithelium in patients with age-related macular degeneration
and Stargardt’s macular dystrophy: follow-up of two open-label phase 1/2 studies. Lancet
2014; published online Oct 15. http://dx.doi.org/10.1016/S0140-6736(14)61376-3.
Design and Implementation of Submicron Level 10T Full Adder in ALU Using Cell...IJERA Editor
As technology scales into the nanometer regime leakage current, active power, delay and area are becoming important metric for the analysis and design of complex circuits. The main concern in mobile and battery based systems are leakage current and power dissipation. A transistor resizing approach for 10 transistor single bit full adder cells is used to determine optimal sleep transistor size which reduces power dissipation and leakage current. A submicron level 10-transistor single bit full adder cell is considered to achieve low leakage current, reduced power dissipation and high speed. In this paper initially 10T full adder cell is designed with submicron technique and later this is employed to design an ALU adder unit. The modified ALU is simulated and synthesized successfully on cadence 180nm technology.
Graphic artists often get bored with their work and seek new challenges and inspiration. To avoid boredom, graphic artists can learn new skills, take on side projects in different styles, or collaborate with other creatives to bring fresh perspectives. Experimenting with unfamiliar mediums or subject matters can help graphic artists feel reinvigorated in their work.
Evaluation of Euclidean and Manhanttan Metrics In Content Based Image Retriev...IJERA Editor
This document evaluates the performance of the Euclidean and Manhattan distance metrics in a content-based image retrieval system. It finds that the Manhattan distance metric showed better precision than the Euclidean distance metric. The system uses color histograms and Gabor texture features to represent images. Color is represented in HSV color space and histograms of hue, saturation and value are used. Gabor filters are applied to capture texture at different scales and orientations. Distance between feature vectors is calculated using Euclidean and Manhattan distance formulas to find similar images from the database. The system was tested on a dataset of 1000 Corel images and Manhattan distance produced more relevant search results.
Design and Simulation of a Three Phase Power Converter Connected To a Distrib...IJERA Editor
The distributed generation systems based on renewable energy sources (photovoltaic, fuel cells, and storage systems such as ultra capacitors and batteries) are of great interest due to their low environmental impact and technical advantages such as improvements in voltage levels and reduced power losses when a distributed generation system is installed in radial lines. Two control algorithms were proposed to improve the grid-connected and intentional-islanding operations methods, in which the distributed generation system must detect the situation and switch from power or current to voltage as a control variable to provide constant rms voltage to the local loads. The power flow between the grid and the distributed generation is controlled by applying a power/voltage method that regulates the amplitude and the displacement of the grid voltage synthesized by the distributed generation, while a phase-locked loop algorithm is used to synchronize the grid and distributed generation.
El documento habla sobre repetición, perforación, apilamiento y agrietamiento para crear densidad, calado y cavidad en una piel o superficie, como para formar una puerta-arco o cielo-cúpula mediante la reducción de material.