Internet access and digital divide: Nigeria slideshareVictor Chukwuma
A presentation at the eGYAfrica Workshop on better Internet connectivity for research and education in Africa, held in Accra, Ghana during 24-25 November 2010. Additional materials from http://www.internetworldstats.com/,MTN Nigeria, Glo and Airtel.
G. Deepika's technical seminar discusses femtocells in 5G technology. Femtocells are small cellular base stations that help improve indoor wireless coverage and capacity. They are seen as a solution to problems like poor signal strength and call drops experienced by users indoors. 5G aims to further advance mobile networks through technologies like self-organization and improved mobility management. Femtocells face challenges in 5G like interference mitigation and security during handoffs. The emerging 5G standards promise high data rates, low latency and better reliability than previous generations of cellular networks.
QoS of Wi-Fi performance based on signal strength and channel for indoor camp...journalBEEI
The implementation of Wi-Fi on campuses brings huge benefits for campus users in communications and education development. Some campuses face existing poor quality of service (QoS) on the Wi-Fi performance which is also unjustified and issues on unsatisfied connections. This research aims to analyses the Wi-Fi performance of the campus network for three indoor access points. Signal strength, usage percentage, channel utilization, and the number of clients count per access points are measured. Results show that 56% is the highest signal percentage and the lowest signal percentage is at 1%. Access point of Ustudent is the highest at 53% and lowest at 38%. The highest signal strength of -45dBm is found and the other two are below by -2 dBm. The lowest signal strength is at -95 dBm. SSID CCNA_1 is identified has the best signal strength compared to other SSIDs because it runs on 5 GHz frequency. The most channels used are channels 1, 4, and 6. Respectively 151, 67, and 57 users are connected to Ustudent, UHotspot, and CCNA_1. This study is significant for the QoS in a campus network in providing good network services. Thus, the QoS on Wi-Fi performance is improvised, monitored and analyzed for continues supports users in the campus network successfully.
Lecturer - University of Ilorin Nigeria presentation at the Youth Engagement ...Adrian Hall
This visionary keynote illuminates the role of the university in the digital age, especially in the connected space. Education is no longer only in the classroom or library, and wide ranging infrastructure and engagement spaces need to be designed to inspire future youth.
The document summarizes results from a study on EMF compliance of networks and devices in India. It notes that India has over 736,000 mobile towers and 892 million subscribers. There are concerns about potential health hazards from EMF radiation. The document discusses India's EMF policy and implementation steps. It provides inputs from WHO, IARC, and ITU on EMF radiation risks and guidelines. Data shows high mobile usage in India, with over 20 million users using phones for over 2 hours daily. This is much higher exposure than in Europe. Further research on towers and handset usage is needed.
The document provides an overview of WiBro service and technology. It introduces the lecturer and their experience in mobile engineering courses and international cooperation. It then discusses WiBro, including its definition as a portable internet service providing high data rates, the services and technologies involved, and international cooperation through WiBro standards and cooperation with Thailand.
The document discusses China's strategy of internet censorship and control. It mentions China's large number of internet users and rapid growth of mobile internet users. It then discusses China's strategy of "human-wave" attacks to overwhelm websites with traffic to enact censorship. Next, it discusses China's extensive censorship system called the "Great Firewall" and how it uses techniques like IP blocking and DNS filtering to control internet access and content. Finally, it briefly mentions the black market for DDoS attacks and real-money trading that has emerged from China's controls.
This document presents a study on high speed data transmission of images over the visible light spectrum using a PIC microcontroller. It discusses how visible light communication (VLC) provides higher bandwidth than wireless fidelity (Wi-Fi) as the visible light spectrum is much wider than the microwave spectrum used for Wi-Fi. The study involves designing a transmitter and receiver system to send sensor data as images using light as the transmission medium. The system is implemented using a microcontroller to convert electrical signals to light signals and vice versa using a light emitting diode and photodiode. It is expected to provide secure transmission of data through light between dedicated nodes without human interference for applications like smart lighting and the internet of things.
Internet access and digital divide: Nigeria slideshareVictor Chukwuma
A presentation at the eGYAfrica Workshop on better Internet connectivity for research and education in Africa, held in Accra, Ghana during 24-25 November 2010. Additional materials from http://www.internetworldstats.com/,MTN Nigeria, Glo and Airtel.
G. Deepika's technical seminar discusses femtocells in 5G technology. Femtocells are small cellular base stations that help improve indoor wireless coverage and capacity. They are seen as a solution to problems like poor signal strength and call drops experienced by users indoors. 5G aims to further advance mobile networks through technologies like self-organization and improved mobility management. Femtocells face challenges in 5G like interference mitigation and security during handoffs. The emerging 5G standards promise high data rates, low latency and better reliability than previous generations of cellular networks.
QoS of Wi-Fi performance based on signal strength and channel for indoor camp...journalBEEI
The implementation of Wi-Fi on campuses brings huge benefits for campus users in communications and education development. Some campuses face existing poor quality of service (QoS) on the Wi-Fi performance which is also unjustified and issues on unsatisfied connections. This research aims to analyses the Wi-Fi performance of the campus network for three indoor access points. Signal strength, usage percentage, channel utilization, and the number of clients count per access points are measured. Results show that 56% is the highest signal percentage and the lowest signal percentage is at 1%. Access point of Ustudent is the highest at 53% and lowest at 38%. The highest signal strength of -45dBm is found and the other two are below by -2 dBm. The lowest signal strength is at -95 dBm. SSID CCNA_1 is identified has the best signal strength compared to other SSIDs because it runs on 5 GHz frequency. The most channels used are channels 1, 4, and 6. Respectively 151, 67, and 57 users are connected to Ustudent, UHotspot, and CCNA_1. This study is significant for the QoS in a campus network in providing good network services. Thus, the QoS on Wi-Fi performance is improvised, monitored and analyzed for continues supports users in the campus network successfully.
Lecturer - University of Ilorin Nigeria presentation at the Youth Engagement ...Adrian Hall
This visionary keynote illuminates the role of the university in the digital age, especially in the connected space. Education is no longer only in the classroom or library, and wide ranging infrastructure and engagement spaces need to be designed to inspire future youth.
The document summarizes results from a study on EMF compliance of networks and devices in India. It notes that India has over 736,000 mobile towers and 892 million subscribers. There are concerns about potential health hazards from EMF radiation. The document discusses India's EMF policy and implementation steps. It provides inputs from WHO, IARC, and ITU on EMF radiation risks and guidelines. Data shows high mobile usage in India, with over 20 million users using phones for over 2 hours daily. This is much higher exposure than in Europe. Further research on towers and handset usage is needed.
The document provides an overview of WiBro service and technology. It introduces the lecturer and their experience in mobile engineering courses and international cooperation. It then discusses WiBro, including its definition as a portable internet service providing high data rates, the services and technologies involved, and international cooperation through WiBro standards and cooperation with Thailand.
The document discusses China's strategy of internet censorship and control. It mentions China's large number of internet users and rapid growth of mobile internet users. It then discusses China's strategy of "human-wave" attacks to overwhelm websites with traffic to enact censorship. Next, it discusses China's extensive censorship system called the "Great Firewall" and how it uses techniques like IP blocking and DNS filtering to control internet access and content. Finally, it briefly mentions the black market for DDoS attacks and real-money trading that has emerged from China's controls.
This document presents a study on high speed data transmission of images over the visible light spectrum using a PIC microcontroller. It discusses how visible light communication (VLC) provides higher bandwidth than wireless fidelity (Wi-Fi) as the visible light spectrum is much wider than the microwave spectrum used for Wi-Fi. The study involves designing a transmitter and receiver system to send sensor data as images using light as the transmission medium. The system is implemented using a microcontroller to convert electrical signals to light signals and vice versa using a light emitting diode and photodiode. It is expected to provide secure transmission of data through light between dedicated nodes without human interference for applications like smart lighting and the internet of things.
Community owned networks - connectivity solution for AfricaDavid Johnson
Cellular connectivity has provided impressive Internet growth in Africa over the past decade, but according to the ITU, in 2017, Africa only had 20% of the population using the Internet; a laggard compared to 40% in Asia & the Pacific and the 50% world average. We have connected the easy half of the population and connecting the next half of the world will require new innovative thinking.
This presentation looks at the current challenges to overcome and building blocks that can help community owned networks grow. It studies radio infrastructure, spectrum sharing and localized services all underpinned by the right regulation and skills.
The document discusses the challenges of efficient spectrum usage in South Africa due to the growing demand for mobile internet. Spectrum is a limited resource that is becoming overburdened by increasing mobile internet usage, especially among youth. South Africa's current spectrum allocation methods are outdated and do not allow for efficient usage. The document proposes investigating cognitive radio technology, which enables dynamic spectrum sharing between mobile operators, as a potential solution to better manage limited spectrum and meet growing bandwidth demands in South Africa and other developing countries.
This document provides a summary of a research article that conducted a survey of indoor positioning and navigation systems and technologies. It discusses how positioning and navigation technologies developed first for outdoor use but researchers have attempted to implement them indoors with varying levels of success. It outlines several technologies used for indoor positioning including infrared, ultrasound, radio frequency, and pedestrian dead reckoning. It also discusses positioning techniques like time of arrival, received signal strength indication, and fingerprinting. The survey analyzed accuracy, complexity, cost and other metrics of different positioning technologies. It concluded that the study has implications for future research on indoor positioning and navigation systems.
A WIRELESS NETWORK INFRASTRUCTURE ARCHITECTURE FOR RURAL COMMUNITIESijcsit
Wireless network implementation is a viable option for building network infrastructure in rural communities. Rural people lack network infrastructures for information services and socio-economic development. The aim of this study was to develop a wireless network infrastructure architecture for network services to rural dwellers. A user-centered approach was applied in the study and a wireless network infrastructure was designed and deployed to cover five rural locations. Data was collected and
analyzed to assess the performance of the network facilities. The results shows that the system had been performing adequately without any downtime with an average of 200 users per month and the quality of service has remained high. The transmit/receive rate of 300Mbps was thrice as fast as the normal Ethernet transmit/receive specification with an average throughput of 1 Mbps. The multiple output/multiple input
(MIMO) point-to-multipoint network design increased the network throughput and the quality of service experienced by the users.
This document discusses the health risks of electromagnetic radiation (EMR) from sources like mobile phones, WiFi devices, and cell towers. It notes that while some studies have linked EMR to health hazards, the scientific consensus is still uncertain. However, the WHO and European Parliament have recommended tighter safety standards due to EMR possibly being carcinogenic. It then discusses how high population density, large numbers of EMR sources, and lax regulations in India lead to greater EMR exposure risks there. The document concludes by listing several ailments that have been linked to EMR exposure in both adults and children.
The university deployed a wireless broadband network from Motorola Solutions across its multiple campuses to provide high-speed internet access for students, staff, and visitors. The network uses RFS7000 wireless switches and access points to deliver speeds up to 54Mbps, allowing users to access the internet throughout the grounds. This is improving the learning experience by enabling easier research and more productive use of breaks. The university also plans to offer a library of video lectures and use the network for security cameras and potentially VoIP phones.
A Model for Monitoring GSM Base Station Radiation Safety in NigeriaIJERA Editor
A guideline for measuring the radio frequency (RF) emissions from the base transceiver stations deployed by Global System Mobile Communications operators in Nigeria is proposed. The guide includes the procedures for measuring the emitted RF power and for determining whether or not the emission exceeds the maximum permissible limits in Nigeria airspace.
Causes of Fiber Cut and the Recommendation to Solve the ProblemIOSRJECE
Optical fiber technology has transformed the telecom landscape in Ghana in recent years owing to its overwhelming advantages over the traditional transmission medium. Though the technology is highly immune to electromagnetic wave, it also offers a higher capacity of bandwidth for data and voice activities. The fiber infrastructure in Ghana has experienced a lot of fiber cuts incidences. And this has affected network quality delivery, increased operational expenditure and decline revenue margins of the telcos. This research was carried out in two phases using MTN Ghana (Western and Central Region) as a case study, to establish the root causes and remedial actions to curb it. First, Pareto and Ishakawa analytical tools were applied to the primary source data for the analysis. Secondly, a purposive survey was administered to acquire additional information. It was established that activities of government sponsored projects and private developers were largely responsible for the menace due to; negligence, ignorance, lack of coordination etc. On the bases, it’s recommended that telcos and stakeholders embark on educational campaign to sensitize the public on optical fiber cables whiles the government of Ghana put in measures to build mandatory right-of-way with support from the private sector.
The Brownsville ISD Technology Plan outlines the district's goals for improving technology access and integration over the 2009-2012 period. It identifies needs such as increased teacher training, campus technology support, infrastructure upgrades, and additional devices. The plan's goals are to provide equitable student access to technology to support learning, train educators to integrate technology into teaching, develop community partnerships, and modernize district administration through technology.
The Universidad Popular Autónoma del Estado de Puebla (UPAEP) upgraded its Wi-Fi network from a mixture of old Cisco and third-party access points to new Cisco Aironet 3700 Series access points to address complaints about poor coverage, speeds and connectivity on campus. The new network provides 40% faster bandwidth, improved security with access points acting as firewalls, and allows students to stay connected for at least four hours, a 400% increase from the previous one hour limit. UPAEP selected Cisco due to the performance, coverage and multimedia transmission capabilities of its equipment. The upgraded network has increased coverage across campus while reducing costs.
This document discusses Wi-Fi, including what it is, its benefits, and potential safety concerns. Wi-Fi allows wireless internet access using radio frequencies. Its main benefits are global accessibility, ease of communication, and cost-effectiveness compared to wired networks. However, some studies have raised questions about the health effects of long-term low-level exposure to radio waves. International standards bodies have established exposure limits for radio frequencies, including those used by Wi-Fi, based on extensive research. They have concluded that Wi-Fi poses no established health risks when used within these limits. The wireless industry works to ensure continued compliance with safety standards and monitors research on health effects.
Lamar University EDLD 5306 Week 2 AssignmentMax Windham
This document provides an overview of E-Rate funding, introduces Humble Independent School District (HISD), and outlines the goals and plans for technology in HISD's technology plan. It discusses E-Rate discounts available to schools based on economic need. HISD has around 35,000 students across 38 campuses, with goals to improve technology access, support teachers, and enhance the use of technology in teaching and learning. The technology plan budget relies heavily on bond funding, with needs including more devices, infrastructure upgrades, and professional development for teachers.
This document is a training report submitted by Jatin Kumar, a student at B.S. Anangpuria Institute of Technology and Management, in partial fulfillment of the requirements for a Bachelor of Technology degree in Electronics and Communication Engineering. The report provides an overview of the student's training at Electronics Niketan, under the Ministry of Communication and Information Technology, Government of India. It includes acknowledgments, a table of contents, and sections on the company profile, an introduction to cognitive radio and dynamic spectrum access, the history and background leading to cognitive radio, basic concepts of cognitive radio, and future applications.
Review of the Security Challenges of Fiber Optics Technologies in Network Con...inventionjournals
The increasing number of people who transfer data from one place to another daily demands that the telecom industries develop a sophisticated strategy to guaranty quality data transferred without compromise or interception. Some of these industries in a bid to meet up with this demand employ any means of data transfer possible to them. Internet connectivity requires physical transfer of data from one place to another. This can be achieved either through wire or wirelessly. Connection through wire could be by UTP, Coaxial or Fiber Optics. Experience showed that wired is more advantageous when considering bandwidth utilization, performance, reliability, resiliency and security, many people are toeing this way and fiber optics their major choice. Fiber optics can be bundled as cable and used for data transmission through which light propagates with little attenuation, which makes it advantageous for long distance communication. The massive choice of fiber optics of recent has increase the security challenges bedevilling it, as it is now the prime target of network attackers. This has increased its vulnerability. Fiber optic is experiencing some security issues like splicing, clamping, cutting and tapping in developing countries like Nigeria. The paper tries to evaluate the security challenges bedevilling the optic fiber
2015 - Broadband development in MoldovaRoman Bahnaru
The document discusses broadband development in the Republic of Moldova. It provides statistics on broadband revenues, subscriptions, technologies, and usage from 2011-2014. Key points include:
- Fixed broadband revenues grew from 540 million MDL in 2011 to 927 million MDL in 2014 while mobile broadband revenues grew from 256 million MDL to 482 million MDL over the same period.
- As of 2014, about 33% of the population had a mobile broadband subscription and about 74% of households had a fixed broadband subscription, over half of which were next generation access subscriptions.
- The top fixed broadband technologies were FTTx (fiber), xDSL, and DOCSIS networks. Fast broadband over 30 Mbps
Cccnc using content-based filtering in a system of recommendation in the co...Elaine Cecília Gatto
Recommendation systems provide suggestions based on information about the preferences of users. The filtering information is used by recommender systems for the processing of information and suggestions to users and content-based filtering is an approach to filtering information widely used in recommender systems. Content-Based Filtering on analyzing the correlation of the content of items with the profile, suggesting relevant items and discarding the irrelevant. Widely used on the Internet, recommendation systems are being studied for use in the context of Digital TV, there are already several studies in this direction. Just as occurs on the Internet, recommendation systems can be used in Digital TV for recommendation of TV programs, advertising and publicity and also electronic commerce. Thus, the items in the context of digital TV, may be programs, publicity / advertising and the products to be sold. Applying Content Filtering Based on the recommendation of programs, for example, it should correlate the content of these programs with user preferences, which in this scenario are the types of programs he has preferred to watch. This paper presents the studies performed with Content Filtering Based on Data Applied to Digital TV. The studies seek to observe and evaluate how some techniques of content-based filtering can be used in recommendation systems in the context of Digital TV
Brief about ICNIRP
Ionizing and Non-Ionizing radiations
ICNIRP guidelines for HF waves -1998
ICNIRP guidelines adopted by India
Role of WHO
Role of DoT, Inter-ministerial Committee
Instructions to State Governments
Conclusion
El documento presenta un horario semanal que incluye actividades como clases, recreo, comida, hacer deberes, estudiar y descansar de lunes a viernes. El horario detalla las actividades programadas para cada día de la semana entre las 8:15 y las 18:30.
El documento presenta un horario semanal que incluye actividades como clases, recreo, comida, hacer deberes y estudiar de lunes a viernes. El horario también detalla periodos de descanso y de preparación de clases.
El documento contiene ejercicios de una alumna de 4o de la ESO sobre periféricos, sistemas de almacenamiento y componentes externos de un ordenador. Incluye listas, tablas, viñetas e imágenes para organizar la información sobre estos temas.
Community owned networks - connectivity solution for AfricaDavid Johnson
Cellular connectivity has provided impressive Internet growth in Africa over the past decade, but according to the ITU, in 2017, Africa only had 20% of the population using the Internet; a laggard compared to 40% in Asia & the Pacific and the 50% world average. We have connected the easy half of the population and connecting the next half of the world will require new innovative thinking.
This presentation looks at the current challenges to overcome and building blocks that can help community owned networks grow. It studies radio infrastructure, spectrum sharing and localized services all underpinned by the right regulation and skills.
The document discusses the challenges of efficient spectrum usage in South Africa due to the growing demand for mobile internet. Spectrum is a limited resource that is becoming overburdened by increasing mobile internet usage, especially among youth. South Africa's current spectrum allocation methods are outdated and do not allow for efficient usage. The document proposes investigating cognitive radio technology, which enables dynamic spectrum sharing between mobile operators, as a potential solution to better manage limited spectrum and meet growing bandwidth demands in South Africa and other developing countries.
This document provides a summary of a research article that conducted a survey of indoor positioning and navigation systems and technologies. It discusses how positioning and navigation technologies developed first for outdoor use but researchers have attempted to implement them indoors with varying levels of success. It outlines several technologies used for indoor positioning including infrared, ultrasound, radio frequency, and pedestrian dead reckoning. It also discusses positioning techniques like time of arrival, received signal strength indication, and fingerprinting. The survey analyzed accuracy, complexity, cost and other metrics of different positioning technologies. It concluded that the study has implications for future research on indoor positioning and navigation systems.
A WIRELESS NETWORK INFRASTRUCTURE ARCHITECTURE FOR RURAL COMMUNITIESijcsit
Wireless network implementation is a viable option for building network infrastructure in rural communities. Rural people lack network infrastructures for information services and socio-economic development. The aim of this study was to develop a wireless network infrastructure architecture for network services to rural dwellers. A user-centered approach was applied in the study and a wireless network infrastructure was designed and deployed to cover five rural locations. Data was collected and
analyzed to assess the performance of the network facilities. The results shows that the system had been performing adequately without any downtime with an average of 200 users per month and the quality of service has remained high. The transmit/receive rate of 300Mbps was thrice as fast as the normal Ethernet transmit/receive specification with an average throughput of 1 Mbps. The multiple output/multiple input
(MIMO) point-to-multipoint network design increased the network throughput and the quality of service experienced by the users.
This document discusses the health risks of electromagnetic radiation (EMR) from sources like mobile phones, WiFi devices, and cell towers. It notes that while some studies have linked EMR to health hazards, the scientific consensus is still uncertain. However, the WHO and European Parliament have recommended tighter safety standards due to EMR possibly being carcinogenic. It then discusses how high population density, large numbers of EMR sources, and lax regulations in India lead to greater EMR exposure risks there. The document concludes by listing several ailments that have been linked to EMR exposure in both adults and children.
The university deployed a wireless broadband network from Motorola Solutions across its multiple campuses to provide high-speed internet access for students, staff, and visitors. The network uses RFS7000 wireless switches and access points to deliver speeds up to 54Mbps, allowing users to access the internet throughout the grounds. This is improving the learning experience by enabling easier research and more productive use of breaks. The university also plans to offer a library of video lectures and use the network for security cameras and potentially VoIP phones.
A Model for Monitoring GSM Base Station Radiation Safety in NigeriaIJERA Editor
A guideline for measuring the radio frequency (RF) emissions from the base transceiver stations deployed by Global System Mobile Communications operators in Nigeria is proposed. The guide includes the procedures for measuring the emitted RF power and for determining whether or not the emission exceeds the maximum permissible limits in Nigeria airspace.
Causes of Fiber Cut and the Recommendation to Solve the ProblemIOSRJECE
Optical fiber technology has transformed the telecom landscape in Ghana in recent years owing to its overwhelming advantages over the traditional transmission medium. Though the technology is highly immune to electromagnetic wave, it also offers a higher capacity of bandwidth for data and voice activities. The fiber infrastructure in Ghana has experienced a lot of fiber cuts incidences. And this has affected network quality delivery, increased operational expenditure and decline revenue margins of the telcos. This research was carried out in two phases using MTN Ghana (Western and Central Region) as a case study, to establish the root causes and remedial actions to curb it. First, Pareto and Ishakawa analytical tools were applied to the primary source data for the analysis. Secondly, a purposive survey was administered to acquire additional information. It was established that activities of government sponsored projects and private developers were largely responsible for the menace due to; negligence, ignorance, lack of coordination etc. On the bases, it’s recommended that telcos and stakeholders embark on educational campaign to sensitize the public on optical fiber cables whiles the government of Ghana put in measures to build mandatory right-of-way with support from the private sector.
The Brownsville ISD Technology Plan outlines the district's goals for improving technology access and integration over the 2009-2012 period. It identifies needs such as increased teacher training, campus technology support, infrastructure upgrades, and additional devices. The plan's goals are to provide equitable student access to technology to support learning, train educators to integrate technology into teaching, develop community partnerships, and modernize district administration through technology.
The Universidad Popular Autónoma del Estado de Puebla (UPAEP) upgraded its Wi-Fi network from a mixture of old Cisco and third-party access points to new Cisco Aironet 3700 Series access points to address complaints about poor coverage, speeds and connectivity on campus. The new network provides 40% faster bandwidth, improved security with access points acting as firewalls, and allows students to stay connected for at least four hours, a 400% increase from the previous one hour limit. UPAEP selected Cisco due to the performance, coverage and multimedia transmission capabilities of its equipment. The upgraded network has increased coverage across campus while reducing costs.
This document discusses Wi-Fi, including what it is, its benefits, and potential safety concerns. Wi-Fi allows wireless internet access using radio frequencies. Its main benefits are global accessibility, ease of communication, and cost-effectiveness compared to wired networks. However, some studies have raised questions about the health effects of long-term low-level exposure to radio waves. International standards bodies have established exposure limits for radio frequencies, including those used by Wi-Fi, based on extensive research. They have concluded that Wi-Fi poses no established health risks when used within these limits. The wireless industry works to ensure continued compliance with safety standards and monitors research on health effects.
Lamar University EDLD 5306 Week 2 AssignmentMax Windham
This document provides an overview of E-Rate funding, introduces Humble Independent School District (HISD), and outlines the goals and plans for technology in HISD's technology plan. It discusses E-Rate discounts available to schools based on economic need. HISD has around 35,000 students across 38 campuses, with goals to improve technology access, support teachers, and enhance the use of technology in teaching and learning. The technology plan budget relies heavily on bond funding, with needs including more devices, infrastructure upgrades, and professional development for teachers.
This document is a training report submitted by Jatin Kumar, a student at B.S. Anangpuria Institute of Technology and Management, in partial fulfillment of the requirements for a Bachelor of Technology degree in Electronics and Communication Engineering. The report provides an overview of the student's training at Electronics Niketan, under the Ministry of Communication and Information Technology, Government of India. It includes acknowledgments, a table of contents, and sections on the company profile, an introduction to cognitive radio and dynamic spectrum access, the history and background leading to cognitive radio, basic concepts of cognitive radio, and future applications.
Review of the Security Challenges of Fiber Optics Technologies in Network Con...inventionjournals
The increasing number of people who transfer data from one place to another daily demands that the telecom industries develop a sophisticated strategy to guaranty quality data transferred without compromise or interception. Some of these industries in a bid to meet up with this demand employ any means of data transfer possible to them. Internet connectivity requires physical transfer of data from one place to another. This can be achieved either through wire or wirelessly. Connection through wire could be by UTP, Coaxial or Fiber Optics. Experience showed that wired is more advantageous when considering bandwidth utilization, performance, reliability, resiliency and security, many people are toeing this way and fiber optics their major choice. Fiber optics can be bundled as cable and used for data transmission through which light propagates with little attenuation, which makes it advantageous for long distance communication. The massive choice of fiber optics of recent has increase the security challenges bedevilling it, as it is now the prime target of network attackers. This has increased its vulnerability. Fiber optic is experiencing some security issues like splicing, clamping, cutting and tapping in developing countries like Nigeria. The paper tries to evaluate the security challenges bedevilling the optic fiber
2015 - Broadband development in MoldovaRoman Bahnaru
The document discusses broadband development in the Republic of Moldova. It provides statistics on broadband revenues, subscriptions, technologies, and usage from 2011-2014. Key points include:
- Fixed broadband revenues grew from 540 million MDL in 2011 to 927 million MDL in 2014 while mobile broadband revenues grew from 256 million MDL to 482 million MDL over the same period.
- As of 2014, about 33% of the population had a mobile broadband subscription and about 74% of households had a fixed broadband subscription, over half of which were next generation access subscriptions.
- The top fixed broadband technologies were FTTx (fiber), xDSL, and DOCSIS networks. Fast broadband over 30 Mbps
Cccnc using content-based filtering in a system of recommendation in the co...Elaine Cecília Gatto
Recommendation systems provide suggestions based on information about the preferences of users. The filtering information is used by recommender systems for the processing of information and suggestions to users and content-based filtering is an approach to filtering information widely used in recommender systems. Content-Based Filtering on analyzing the correlation of the content of items with the profile, suggesting relevant items and discarding the irrelevant. Widely used on the Internet, recommendation systems are being studied for use in the context of Digital TV, there are already several studies in this direction. Just as occurs on the Internet, recommendation systems can be used in Digital TV for recommendation of TV programs, advertising and publicity and also electronic commerce. Thus, the items in the context of digital TV, may be programs, publicity / advertising and the products to be sold. Applying Content Filtering Based on the recommendation of programs, for example, it should correlate the content of these programs with user preferences, which in this scenario are the types of programs he has preferred to watch. This paper presents the studies performed with Content Filtering Based on Data Applied to Digital TV. The studies seek to observe and evaluate how some techniques of content-based filtering can be used in recommendation systems in the context of Digital TV
Brief about ICNIRP
Ionizing and Non-Ionizing radiations
ICNIRP guidelines for HF waves -1998
ICNIRP guidelines adopted by India
Role of WHO
Role of DoT, Inter-ministerial Committee
Instructions to State Governments
Conclusion
El documento presenta un horario semanal que incluye actividades como clases, recreo, comida, hacer deberes, estudiar y descansar de lunes a viernes. El horario detalla las actividades programadas para cada día de la semana entre las 8:15 y las 18:30.
El documento presenta un horario semanal que incluye actividades como clases, recreo, comida, hacer deberes y estudiar de lunes a viernes. El horario también detalla periodos de descanso y de preparación de clases.
El documento contiene ejercicios de una alumna de 4o de la ESO sobre periféricos, sistemas de almacenamiento y componentes externos de un ordenador. Incluye listas, tablas, viñetas e imágenes para organizar la información sobre estos temas.
This document provides an agenda and terms for an English class. The agenda notes that Essay #3 is due by emailing the professor and that there will be a presentation on exam terms and a film screening. Definitions are then provided for several literary terms: novel, pathos, personification, protagonist, scene, and drama. The homework assigned is to read a secondary reading, post a discussion question about a film, analyze a character using a term from the definitions, and study for the exam terms.
La gallina es el ave no voladora más abundante en la tierra, con cada gallina poniendo alrededor de 250 huevos por año. El petirrojo es una de las aves voladoras más abundantes, con una población de hasta 10 mil millones de individuos. El documento también proporciona datos sobre la velocidad máxima de varias aves y la información bancaria necesaria para ser socio de la Sociedad Española de Ornitología.
Why are we still doing industrial age drugSean Ekins
This document discusses the need for changes to the drug discovery process for neglected diseases like tuberculosis. It argues that drug discovery has not changed much in the last 40 years and still relies on testing large numbers of compounds in vivo, despite new database and computational technologies. The document advocates combining big data from high-throughput screening with small targeted in vivo data, along with other data sources, to build predictive models and identify promising compounds more efficiently. This "new new school" approach could help accelerate the discovery of new treatments for diseases like tuberculosis that currently lack sufficient treatment options.
This document discusses using R for cheminformatics and quantitative structure-activity relationship (QSAR) modeling. It provides an overview of R and describes tools like the Chemistry Development Kit (CDK) and rcdk package that allow working with chemical data in R. The document discusses reading and working with molecules and chemical data, calculating molecular descriptors, generating fingerprints, accessing public databases, and using the results for QSAR modeling and machine learning in R.
Nasir faruk tv white spaces presentation iad2014Adrian Hall
Nasir Faruk presents on the prospect of deploying TV white space in Africa. Some key points:
1) TV white space refers to unused portions of spectrum between 54-862 MHz that can be used without interfering with TV broadcast signals. It provides an opportunity to address the scarcity of radio spectrum and lack of broadband access in Africa.
2) Africa significantly lags behind other regions in key broadband metrics like subscriptions and speeds. TV white space could help connect rural communities and drive economic and social development.
3) WaveTek Nigeria is leading research efforts on TV white space in the country through field surveys, modeling, and prototype deployments. Their aim is to help Nigeria meet national targets for internet access
The university deployed a wireless broadband network from Motorola Solutions across its multiple campuses to provide high-speed internet access for students, staff, and visitors. The network uses RFS7000 wireless switches and access points to deliver speeds up to 54Mbps, allowing users to access the internet throughout the grounds. This is improving the learning experience by enabling easier research and more productive use of breaks. The university also plans to offer a library of video lectures and use the network for security cameras and potentially VoIP phones.
Opportunistic use of the 2.63.5 ghz band for broadband services in the west a...ijmnct
Wireless technology is increasing rapidly, and the vision of pervasive wireless computing and
communications offers the promise of many societal and individual benefits. While consumer devices such
as cell phones, PDAs and laptops receive a lot of attention, the impact of wireless technology is much
broader, e.g., through sensor networks for safety applications and home automation, smart grid control,
medical wearable and embedded wireless devices, and entertainment systems. One of these wireless
technologies is the Worldwide Interoperability for Microwave Access (WiMAX) technology. The explosion
of wireless applications in some parts of the world has created an ever-increasing demand for more radio
spectrum. This is not the case in the West African Sub-Region, especially Ghana where the 2.6GHz and
3.5GHz broadband access bands offering 190MHz and 140MHz bandwidth is underutilized. In this paper,
we look at usage of deployed 4G-WiMAX network in Ghana and advocate the need for policy to promote
the usage of licensed bands opportunistically by wireless devices and/or networks for application in
security, smart grid control, e-learning, telemedicine, e-governance, home and factory automation
The document discusses the rise of mobile learning and its potential as the next generation of learning. It provides examples of existing mobile learning projects from around the world and how they leverage features of smartphones and mobile phones. The future of mobile learning is promising as wireless technologies continue to advance and more people have access to Internet-enabled mobile devices.
The scope of the WIFI project is not limited to a specific realm of the participants in the university. As part of a five-year strategic plan of the IT deanship, the project aims to create a consistent user experience across the various building of University, including the provision of wireless network access. The access to the network on the go can be a really great endeavor for the information exchange and the information fetch at instances when needed. This last issue became critical in the summer of 2014, when the more number of extra access point of the network are needed, which require civil work and extra time to get ready. This was a very typical scenario in which wiring and cabling was a burden and an overhead for the entire vicinity of the employees including the implementation team and the stakeholders. Moreover there are various issues that are known to everyone regarding the cable LAN and its maintenance. We had already traditionally viewed wired as good enough for everybody, however over the past times the scenario is changing and it is becoming a very drastic problem where the more the expansion of the network is done the more are the chances of the faults in the network and the system designs. Thus it becomes a very needful situation where a solution is to be figured out for the networks and its maintenance.
This document discusses Li-Fi technology, which uses visible light communication to transmit data wirelessly using LED light bulbs. Li-Fi was coined by Professor Harald Haas as an alternative to Wi-Fi that uses radio frequencies. It provides bidirectional and fully networked wireless connections at high speeds. Potential practical uses of Li-Fi include use in traffic lights, hospitals, airplanes, and underwater communications. Compared to Wi-Fi, Li-Fi has benefits like higher speed and more secure communication, but also faces limitations such as inability to pass through solid objects and interference from other light sources. Future developments could allow Li-Fi to still function in daylight and at night by modulating light intensity.
Mobile Evolution-4G Technology provides a 3 sentence summary of the key aspects of 4G technology:
4G technology allows for high-speed wireless connectivity through long-range networks to support applications like video calling and internet access on mobile devices. It provides significantly higher data rates, improved capacity, and more efficient use of radio resources compared to previous generations of wireless technology. 4G aims to fulfill the increasing demand for seamless high-speed multimedia services anytime, anywhere.
Comparative Study of Optic Fibre and Wireless Technologies in Internet Connec...Editor IJCATR
Most of the activities going on in the world today demand information and data sharing in one form or the other.
Consequently, the Internet and its connectivity has gradually become a household concern. The connection to the Internet requires
physical transfer of signal (data/information) from one point to another. This can either be through physical medium (wire) or through
the air (wireless). This paper a comparative study of Fiber Optics and Wireless Technologies in Internet connectivity seeks to identify
which of the two technologies is better for signal transmission in terms of bandwidth utilization, performance, reliability, cost
effectiveness, resilience, and security. The study adopted the use of secondary sources for the sourcing of materials. A lot of journal
articles, research publications, testbooks, white papers and many more were critically studies and comparatively analysed. It was clear
that both media have hitches and challenges. The study showed that although initial cost of acquisition is an inhibitive factor for fibre
optic connection, unlimited bandwidth delivery and high Quality of Service (QoS) placed Fiber optics above wireless connectivity in
their overall performance.
Mohammad Faisal Kairm(073714556) Assignment 1mashiur
This document discusses IP telephony and its benefits for distance learning institutions. It begins by providing background on the evolution of communication technologies. It then describes the four types of internet telephony communications: PC to PC, PC to phone, phone to PC, and phone to phone. The document outlines how IP telephony can benefit distance learning institutions by enabling cost savings, decreasing travel time between remote locations, and increasing portability and flexibility for learners.
The document presents the results of a survey about understanding and use of wireless technology. It finds that half of participants have an excellent understanding of wireless technology gained mostly through school and the internet. Television and phones are the most frequently used wireless devices. While most feel wireless technology benefits business, some are concerned about privacy and reduced face-to-face communication. Issues like unstable wifi and inaccurate location services were also cited. The document concludes that exposure to wireless technology positively correlates with understanding, and that further improvements could address user inconveniences.
The document describes a proposed Wi-Fi calling system called Wi-Call that allows voice and data communication between Wi-Fi enabled devices on a local area network (LAN) without using an internet or cellular connection. It works by converting voice signals to IP packets and transmitting them over the LAN. The system uses a web application to register users and map their IP addresses so calls can be routed properly within the dynamic IP environment of a LAN. It aims to reduce communication costs for organizations by providing free calling and data transmission within the LAN.
Current Trends in Networking (Assignment)Gochi Ugo
This paper is the answer to the assessment questions of the Current Trends In Networking module of BSc. Computing (Information Management) of Anglia Ruskin University
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.
The document discusses Gi-Fi (Gigabit wireless) technology, which allows wireless transfer of data at speeds up to 5 gigabits per second within a 10 meter range. It provides advantages over existing Bluetooth and Wi-Fi technologies by offering higher data rates, lower power consumption, and operating at 60 GHz frequency for better security and interference immunity. The document outlines the network evolution leading to Gi-Fi, its architecture based on IEEE 802.15.3c standard, working principles, advantages, applications in home appliances and vehicle communication, and concludes that Gi-Fi will become the dominant wireless technology for networking within five years.
The document is a project report submitted by four students at MIT College of Engineering in Pune for their Bachelor of Engineering degree. The project is called WiPAt, which stands for WiFi Positioning System for Attendance. The report describes developing a system that will automate the process of marking student attendance in a college by using the WiFi positioning capabilities of mobile devices and routers located throughout the campus. The system aims to reduce the time and effort required for manual attendance marking by faculty. The report includes sections on related work done in the area of WiFi positioning systems, the goals and technologies used in developing the WiPAt system, design documents for the system, and code snippets from the implementation.
The document discusses 5G mobile technology, which will be the next generation of wireless technology after 4G. It provides an overview of 5G and its evolution from 1G to 5G mobile networks. Key features of 5G include high speeds over 1Gbps, low latency, and the ability to connect everything together. Potential applications include accessing global networks from anywhere and interacting with virtual realities.
University of the Highlands and Islands extents ubiquitous Wi-Fi services acr...Juniper Networks UKI
The University of the Highlands and Islands is unusual in that it covers an
extended geographic region (about half of Scotland, or a sixth of the land
area of the UK). It has almost 100 campus locations supporting about 7,500
Higher Education students and 25,000 Further Education students, and is
based across a wide range and variety of sites, from large campuses supporting
thousands of students, down to single room locations in remote rural areas and
on remote islands.
These broad-ranging geographic variations leave the university with
some unique IT challenges. Available bandwidth can vary hugely between
locations—some close to fiber-optic infrastructure and others in remote
corners of the region where even broadband speeds are low. Resiliency of
those communication links can be another challenge, as diverse routes can
be impractical, and sub-sea cables or radio links are more exposed than
land-based communication systems. Not least, the university must provide a
consistent service across all of its locations, whether they support a handful of
students or thousands.
A CLOSE ASSESSMENT AND ANALYSIS OF PUBLIC WIFIJose Katab
The document provides a close assessment and analysis of public WiFi networks. It examines WiFi technology and compares it to other wireless technologies such as 3G, 4G, and LTE. The analysis looks at factors such as total cost, availability, number of supported nodes, end user cost, range, vendor cost, reliability, and security. Tables are presented comparing aspects of different wireless technologies like bandwidth, cost, and performance. The objective is to match WiFi with these other technologies to help companies make informed business decisions when entering the wireless market.
This document is a thesis submitted by three students analyzing 5G network technologies. It includes a title page, declaration, approval, acknowledgements, abstract, table of contents, and six chapters. The thesis analyzes the evolution of mobile networks leading to 5G, key 5G technologies like massive MIMO and device-to-device communication, a proposed 5G network architecture called NANOCORE, and a comparison of 4G and 5G networks. The students conclude with a discussion of future work and achievements from completing the thesis.
The document outlines information about ArifPay, including its board of directors, an overview of the Ethiopian market, problems with old POS systems, ArifPay's solution of providing mPOS, payment gateway and digital/QR payments, its growth and current stats like $3.1M in capital and plans to sell 200M ETB of airtime annually. The conclusion states ArifPay can help reshape payments in Ethiopia and expand to Africa.
ITU Presentation at IAD DCS Summit 2022Adrian Hall
The document summarizes digital connectivity in Mauritius, Seychelles, South Africa, and Cape Verde. It finds that while internet usage has increased in Africa to 33%, 2.9 billion remain unconnected. The 4 countries have high levels of network coverage but varying levels of mobile ownership, home internet access, and affordability. Meaningful connectivity depends on infrastructure, device affordability, skills, and safety. Universal and meaningful connectivity is key to digital transformation, but frameworks must evolve to reflect changing technologies and needs.
Modular Data Center - Innovation Africa Digital Summit 20220512.pptxAdrian Hall
Ethio Telecom plans to expand its modular data center capacity to support the growing demand for data and internet services in Ethiopia. The primary site currently has 80 racks with a total capacity of 640KW IT load. An identical redundant site also exists. Ethio Telecom offers colocation hosting services starting at a monthly rate of [price] per 4U, with flexible options up to multiple racks. Benefits for enterprise customers include fast time to market, no foreign currency pressure, and reliable services with 99.99% uptime. Ethio Telecom aims to expand its data center-as-a-service offerings over time to provide infrastructure as a service, platform as a service and software as a service.
DCA - Africa Market Analysis 2021_South Africa.pdfAdrian Hall
The document provides an overview of digital infrastructure developments in Sub-Saharan Africa. It notes that while investments in digital infrastructure like submarine cables and data centers have increased, broadband access across the region remains limited with fiber connectivity reaching only 1-2% of households outside of South Africa. Mobile internet penetration is also low at 30%, below the global average of 55%. It highlights several new investments that could help bridge the digital divide, such as Google's Equiano and Facebook's 2Africa submarine cable projects, and expanding data center capacity from companies like Liquid Intelligent Technologies and Teraco.
The document discusses the impact of public-private partnerships (PPPs) and open access networks on a nation's development. It provides background on C Squared, an African technology company that invests in broadband infrastructure through open access networks. Case studies show how C Squared partnerships have helped expand connectivity in countries like Liberia, Togo, and Ghana. The recommendations emphasize that digital growth requires supportive policies and private investment. PPPs and a "neutral open-access player" can facilitate collaboration among governments, operators, and investors to accelerate Africa's digital transformation.
The document discusses empowering Ethiopian businesses for a digital future through market segmentation, digital transformation, innovative products and services, and social responsibility. It aims to transform lives through a digital Ethiopia by getting things done together with Ethiopian enterprises.
Wingu is a leading pan-East African carrier-neutral commercial data center operator. It has strategic hubs in Djibouti and Somaliland and serves the regional market from Ethiopia and Tanzania. Wingu has been operating since 2013 across four sites in four countries. It has a proven track record, strategic locations, and a strong management team.
This document summarizes the work of Zafree Papers, an Ethiopian company that produces paper products from agricultural waste rather than trees. It notes that traditional paper production requires cutting many trees and has high costs, carbon emissions, and long wait times to import pulp in Ethiopia. Zafree Papers produces paper from 90% agricultural waste that uses less water and energy than traditional methods. It aims to increase production capacity to save thousands of trees daily and expand across Africa to dominate the global paper market through environmentally friendly products.
1. Project NINJA in Africa works to promote innovation and entrepreneurship across Africa through programs like idea contests, education, incubation, acceleration, and business matching since 2020.
2. The framework of Project NINJA involves supporting entrepreneurs from the business concept phase through implementation, preparation, startup preparation, and business expansion phases, with the goal of helping startups raise funds and scale up.
3. Examples of Project NINJA programs include an incubation program in Ethiopia that supported over 2000 youth entrepreneurs, an acceleration program across 19 African countries that received over 2700 applicants, and various JICA projects promoting entrepreneurship in countries like Rwanda, Ethiopia, Kenya, Ghana, Nigeria, Uganda, Cambodia,
Orbit Health - Transforming Healthcare Access and Delivery in AfricaAdrian Hall
Orbit Health is working to improve healthcare access and delivery in Africa through digital innovation and technology adoption. Its mission is to provide innovative, efficient, affordable, and scalable healthcare solutions. It faces challenges like a lack of access to quality healthcare and financial services. Orbit Health offers products like an electronic medical records system and patient engagement platform. It has grown its patient base from 1.5 million in 2019 to a projected 35 million by 2024. Orbit Health also runs the Orbit Innovation Hub to support digital health startups through incubation, acceleration, funding, and resources.
Sewasew is a crowdsourced, multi-language platform that aims to address the lack of local content about Africa on the internet. While internet adoption in Africa has increased, local content remains scarce compared to other regions. Sewasew launched in 2016 and has since expanded to over 200,000 articles across four African languages. The platform seeks to increase adoption, form more content partnerships across Africa, and expand to additional regions to further bring Africa's knowledge online.
Roen Menezes Regional Director Thuraya IAD Summit 2019Adrian Hall
This document provides information about Thuraya Telecommunications Company and its satellite communication products and services. It summarizes that Thuraya is a leading mobile satellite operator that provides voice, data and other services to over 161 countries via its two satellites. It has a range of satellite phones, hotspots and IoT devices that can work over satellite or cellular networks. Examples of how Thuraya's technology is used include election polling, fisheries tracking, oil/gas operations and more. The document concludes by describing a case study of Thuraya's technology being used for result transmission in Democratic Republic of Congo's 2018 election.
1. The document discusses Ericsson's history in Ethiopia dating back to 1894 and its more recent expansion projects beginning in 2014. It also covers Sweden's development cooperation with Ethiopia since 1946 to promote education, healthcare and economic development.
2. It outlines Ericsson's role over 140 years in enabling communication technologies from copper wire to 5G and artificial intelligence, as the number of connected devices worldwide is expected to grow exponentially.
3. The last section argues that 5G will be crucial for industries and economic growth in Africa, highlighting opportunities in agriculture through real-time monitoring and management across the value chain.
The document describes a multi-standard 2G/3G/4G outdoor macro-cell that supports 2 carriers with 10 watts per channel and consumes 150 watts total. It can provide 2G, 3G, and 4G connectivity on two separate channels simultaneously. The document also mentions a network solution and worldwide presence without providing details.
Aviat Networks is a leading provider of wireless connectivity and transport solutions for applications such as public safety, utilities, transportation, schools/enterprises, and financial services. It designs, deploys, and helps visualize wireless networks using microwave and fiber equipment and provides network operations center services for telecommunications providers.
The document discusses resources available on the website www.1ppt.com, including templates, materials, backgrounds, charts, tutorials, files and fonts for PowerPoint, Word and Excel. It provides links to download PPT templates, industry templates, holiday templates, materials, backgrounds, charts, excellent PPTs, tutorials for PowerPoint, Word and Excel, materials, courseware, papers, test papers, lesson plans and fonts. Tables and charts show trends in data traffic growth, 5G forecasts and characteristics of Addis Ababa, Ethiopia. The document promotes subtracting overlapping investments, simplifying architectures, enhancing coverage, capacity and bandwidth, improving services and experience, and enabling end-to-end AI optimization of networks
This document discusses strategies for solving the economical equation of broadband networks. It advocates a technology mix of both mobile and fixed networks to provide connectivity. Broadband is described as an end-to-end solution, with infrastructure being only half of the equation. Key factors for success include governments creating an investment-friendly environment, using a mix of technologies appropriate for population densities, and taking an open collaboration approach.
Dr. Solomon Assefa VP IBM Research IAD 2019 Adrian Hall
Advances in artificial intelligence and computing will drive transformation across industries and society. IBM Research is working to advance AI techniques, create more trustworthy and explainable systems, and build novel hardware to power the next generation of AI. The development of skills and partnerships across Africa will be crucial to realizing the promise of emerging technologies and preparing the continent for the future of computing.
1) The COO of MTN Group discussed opportunities for digital innovation in Africa due to strong GDP growth and urbanization across the region.
2) MTN aims to redefine inclusion by expanding access to mobile and digital services to more people across Africa, where only 1 in 4 Africans are currently connected.
3) As a leading telecom brand across Africa, MTN is well-positioned to drive digital and financial inclusion through its mobile money platform and other digital services, addressing challenges of connectivity and access to banking.
"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.
Dandelion Hashtable: beyond billion requests per second on a commodity serverAntonios Katsarakis
This slide deck presents DLHT, a concurrent in-memory hashtable. Despite efforts to optimize hashtables, that go as far as sacrificing core functionality, state-of-the-art designs still incur multiple memory accesses per request and block request processing in three cases. First, most hashtables block while waiting for data to be retrieved from memory. Second, open-addressing designs, which represent the current state-of-the-art, either cannot free index slots on deletes or must block all requests to do so. Third, index resizes block every request until all objects are copied to the new index. Defying folklore wisdom, DLHT forgoes open-addressing and adopts a fully-featured and memory-aware closed-addressing design based on bounded cache-line-chaining. This design offers lock-free index operations and deletes that free slots instantly, (2) completes most requests with a single memory access, (3) utilizes software prefetching to hide memory latencies, and (4) employs a novel non-blocking and parallel resizing. In a commodity server and a memory-resident workload, DLHT surpasses 1.6B requests per second and provides 3.5x (12x) the throughput of the state-of-the-art closed-addressing (open-addressing) resizable hashtable on Gets (Deletes).
What is an RPA CoE? Session 2 – CoE RolesDianaGray10
In this session, we will review the players involved in the CoE and how each role impacts opportunities.
Topics covered:
• What roles are essential?
• What place in the automation journey does each role play?
Speaker:
Chris Bolin, Senior Intelligent Automation Architect Anika Systems
QA or the Highway - Component Testing: Bridging the gap between frontend appl...zjhamm304
These are the slides for the presentation, "Component Testing: Bridging the gap between frontend applications" that was presented at QA or the Highway 2024 in Columbus, OH by Zachary Hamm.
LF Energy Webinar: Carbon Data Specifications: Mechanisms to Improve Data Acc...DanBrown980551
This LF Energy webinar took place June 20, 2024. It featured:
-Alex Thornton, LF Energy
-Hallie Cramer, Google
-Daniel Roesler, UtilityAPI
-Henry Richardson, WattTime
In response to the urgency and scale required to effectively address climate change, open source solutions offer significant potential for driving innovation and progress. Currently, there is a growing demand for standardization and interoperability in energy data and modeling. Open source standards and specifications within the energy sector can also alleviate challenges associated with data fragmentation, transparency, and accessibility. At the same time, it is crucial to consider privacy and security concerns throughout the development of open source platforms.
This webinar will delve into the motivations behind establishing LF Energy’s Carbon Data Specification Consortium. It will provide an overview of the draft specifications and the ongoing progress made by the respective working groups.
Three primary specifications will be discussed:
-Discovery and client registration, emphasizing transparent processes and secure and private access
-Customer data, centering around customer tariffs, bills, energy usage, and full consumption disclosure
-Power systems data, focusing on grid data, inclusive of transmission and distribution networks, generation, intergrid power flows, and market settlement data
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!
High performance Serverless Java on AWS- GoTo Amsterdam 2024Vadym Kazulkin
Java is for many years one of the most popular programming languages, but it used to have hard times in the Serverless community. Java is known for its high cold start times and high memory footprint, comparing to other programming languages like Node.js and Python. In this talk I'll look at the general best practices and techniques we can use to decrease memory consumption, cold start times for Java Serverless development on AWS including GraalVM (Native Image) and AWS own offering SnapStart based on Firecracker microVM snapshot and restore and CRaC (Coordinated Restore at Checkpoint) runtime hooks. I'll also provide a lot of benchmarking on Lambda functions trying out various deployment package sizes, Lambda memory settings, Java compilation options and HTTP (a)synchronous clients and measure their impact on cold and warm start times.
The Department of Veteran Affairs (VA) invited Taylor Paschal, Knowledge & Information Management Consultant at Enterprise Knowledge, to speak at a Knowledge Management Lunch and Learn hosted on June 12, 2024. All Office of Administration staff were invited to attend and received professional development credit for participating in the voluntary event.
The objectives of the Lunch and Learn presentation were to:
- Review what KM ‘is’ and ‘isn’t’
- Understand the value of KM and the benefits of engaging
- Define and reflect on your “what’s in it for me?”
- Share actionable ways you can participate in Knowledge - - Capture & Transfer
ScyllaDB is making a major architecture shift. We’re moving from vNode replication to tablets – fragments of tables that are distributed independently, enabling dynamic data distribution and extreme elasticity. In this keynote, ScyllaDB co-founder and CTO Avi Kivity explains the reason for this shift, provides a look at the implementation and roadmap, and shares how this shift benefits ScyllaDB users.
This talk will cover ScyllaDB Architecture from the cluster-level view and zoom in on data distribution and internal node architecture. In the process, we will learn the secret sauce used to get ScyllaDB's high availability and superior performance. We will also touch on the upcoming changes to ScyllaDB architecture, moving to strongly consistent metadata and tablets.
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
Connector Corner: Seamlessly power UiPath Apps, GenAI with prebuilt connectorsDianaGray10
Join us to learn how UiPath Apps can directly and easily interact with prebuilt connectors via Integration Service--including Salesforce, ServiceNow, Open GenAI, and more.
The best part is you can achieve this without building a custom workflow! Say goodbye to the hassle of using separate automations to call APIs. By seamlessly integrating within App Studio, you can now easily streamline your workflow, while gaining direct access to our Connector Catalog of popular applications.
We’ll discuss and demo the benefits of UiPath Apps and connectors including:
Creating a compelling user experience for any software, without the limitations of APIs.
Accelerating the app creation process, saving time and effort
Enjoying high-performance CRUD (create, read, update, delete) operations, for
seamless data management.
Speakers:
Russell Alfeche, Technology Leader, RPA at qBotic and UiPath MVP
Charlie Greenberg, host
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/
From Natural Language to Structured Solr Queries using LLMsSease
This talk draws on experimentation to enable AI applications with Solr. One important use case is to use AI for better accessibility and discoverability of the data: while User eXperience techniques, lexical search improvements, and data harmonization can take organizations to a good level of accessibility, a structural (or “cognitive” gap) remains between the data user needs and the data producer constraints.
That is where AI – and most importantly, Natural Language Processing and Large Language Model techniques – could make a difference. This natural language, conversational engine could facilitate access and usage of the data leveraging the semantics of any data source.
The objective of the presentation is to propose a technical approach and a way forward to achieve this goal.
The key concept is to enable users to express their search queries in natural language, which the LLM then enriches, interprets, and translates into structured queries based on the Solr index’s metadata.
This approach leverages the LLM’s ability to understand the nuances of natural language and the structure of documents within Apache Solr.
The LLM acts as an intermediary agent, offering a transparent experience to users automatically and potentially uncovering relevant documents that conventional search methods might overlook. The presentation will include the results of this experimental work, lessons learned, best practices, and the scope of future work that should improve the approach and make it production-ready.
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.
Poznań ACE event - 19.06.2024 Team 24 Wrapup slidedeck
Intrawebcast
1. INTRA-WEBCAST
EXPERIMENT AND EXPERIENCE
Nasir Faruk
Segun Ajayi
Department of Telecommunication
Science
Department of Physics,
Faculty of Communication and
Faculty of Physical Sciences
Information Sciences
University of Ilorin, Nigeria
University of Ilorin, Nigeria
Emails: segundexty@gmail.com
Email: faruk.n@unilorin.edu.ng,
segundexty@hotmail.com
Mobile: +(234) 8032428141
Mobile: +(234)8060645658
www.gigawavetechnology.webs.com
Presented at Youth Engagement Summit , Mauritius 5 th
December, 2013
3. Introduction
Live streaming: Listening or viewing multimedia apps in
real time
The traditional streaming media: Usually via the internet.
Intranet webcast requires no global network or
broadband like the internet.
This experiment describes a technology for live
streaming of various TV programs on a local area
network
It is accessible from mobile phones, Internet TVs,
tablets and PCs.
4. Motivations
Youth
engagement/Hands on
The need for internet connection for
traditional live streaming
Recurrent cost for bandwidth particularly in
African region
Broadband penetration: USA 75%
Digital dividend: Global and National
Bandwidth Management (Saving): FTP,
HTTP do not require much bandwidth as
multimedia applications
5. Fixed broadband Internet subscriptions in 2012 as
a percentage of a country's population
Source: International Telecommunications Union.
6. Mobile broadband Internet subscriptions in 2012
as a percentage of a country's population
Source: International Telecommunications Union
13. Fig 6. WiFi repeater station with
an attached 17dBi grid antenna.
14. Roaming Supports
Repeaters maintains a single SSID throughout the
wireless cloud
Repeaters are on bridge mode
End user’s device will not need to re-initiate connection
with the next repeater
The mobile device assumes the same access point all
over the coverage area.
Hence, the IP address is not changed and the streaming
session is not interrupted.
15. Testing
Users connect to the network and been assign an IP by the router
To connect to this stream, a user must lunch a browser from his
device and log on to the URL www.datalink.net (192.168.10.10)
Click liveTV on the web page
16. Fig 7. End user device streaming
MBC 4 a Satellite TV channel.
18. Further work and challenges
Further work
Multiple streams broadcast where users can choose what
to watch
Performance evaluation
Embedding the solution on WMN infrastructure, project
funded by AFRINIC
Commercializing?
Challenges
Finance/funding
Power failure, currently running on National grid: need for
alternative clean energy
Coverage
Need for Robust servers with multiple PCI slots
19. Way forward for a better Africa
Collaboration amongst Universities in Africa
Knowledge transfer
Student exchange programme
Staff exchange
Postdoctoral opportunities
Scholarships for post graduate studies
Industrial-Academic links
Research Africa: http://www.researchresearch.com
Funding
Government
NGOs
21. BIOGRAPHY
Nasir Faruk Is a lecturer in the department of Telecommunication
Science, University of Ilorin, Ilorin, Nigeria. He received his B.sc (Hons)
in Physics with first class honours from KUST Wudil, Kano State,
Nigeria and M.sc in Mobile and High Speed Telecommunication
Networks with distinction from Oxford Brookes University, Oxford, UK.
He is rounding his PhD research in Electrical and Electronics
Engineering at University of Ilorin, Ilorin, Nigeria. Where he researched
on development of Model for maximizing spatial TV white space. He
has over 19 published journal and conference papers. His current
research interest includes design, analysis and optimization of Wireless
communication networks, Wireless mesh and sensor networks,
spectrum management, channel modeling, disaster and public safety
networks and multiservice networks
Segun Ajayi is about completing bachelor degree in Physics, at the
University of Ilorin, Nigeria. He has three years experience in Satellite
Communication and four years experience in Computer Networking. He
obtained his ordinary Diploma Certificate (OND) in Electrical Electronics
Engineering in the year 2007.