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- 저자 : Nkenyereye, Lewis (검색결과 26 건)
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Nkenyereye, Lionel,Jang, Jong-Wook The Institute of Internet 2016 Journal of Advanced Smart Convergence Vol.5 No.3
With the help of a small wearable device, patients reside in an isolated village need constant monitoring which may increase access to care and decrease healthcare delivery cost. As the number of patients' requests increases in simultaneously manner, the web service gateway located in the village hall encounters limitations for performing them successfully and concurrently. The gateway based RESTful technology responsible for handling patients' requests attests an internet latency in case a large number of them submit toward the gateway increases. In this paper, we propose the design tasks of the web service gateway for handling concurrency events. In the procedure of designing tasks, concurrency is best understood by employing multiple levels of abstraction. The way that is eminently to accomplish concurrency is to build an object-oriented environment with support for messages passing between concurrent objects. We also investigate the performance of event-driven architecture for building web service gateway using node.js. The experiments results show that server-side JavaScript with Node.js and MongoDB as database is 40% faster than Apache Sling. With Node.js developers can build a high-performance, asynchronous, event-driven healthcare hub server to handle an increasing number of concurrent connections for Remote Healthcare Monitoring System in an isolated village with no access to local medical care.
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Design of Data Center Environmental Monitoring System Based On Lower Hardware Cost
Nkenyereye, Lionel,Jang, Jongwook Korea Multimedia Society 2016 The journal of multimedia information system Vol.3 No.3
Environmental downtime produces a significant cost to organizations and makes them unable to do business because what happens in the data center affects everyone. In addition, the amount of electrical energy consumed by data centers increases with the amount of computing power installed. Installation of physical Information Technology and facilities related to environmental concerns, such as monitoring temperature, humidity, power, flood, smoke, air flow, and room entry, is the most proactive way to reduce the unnecessary costs of expensive hardware replacement or unplanned downtime and decrease energy consumed by servers. In this paper, we present remote system for monitoring datacenter implementing using open-source hardware platforms; Arduino, Raspberry Pi, and the Gobetwino. The sensed data displayed through Arduino are transferred using Gobetwino to the nearest host server such as temperature, humidity and distance every time an object hitting another object or a person coming in entrance. The raspberry Pi records the sensed data at the remote location. The objective of collecting temperature and humidity data allows monitoring of the server's health and getting alerts if things start to go wrong. When the temperature hits $50^{\circ}C$, the supervisor at remote headquarters would get a SMS, and then they would take appropriate actions to reduce electrical costs and preserve functionality of servers in data centers.
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Performance Evaluation of Node.js for Web Service Gateway in IoT Remote Monitoring Applications
Nkenyereye, Lionel,Jang, Jong-Wook The International Promotion Agency of Culture Tech 2016 International Journal of Advanced Culture Technolo Vol.4 No.3
The growth of mobile devices in Internet of Things (IoT) leads to a number of remote and controlling system related IoT applications. For instance, home automation controlling system uses client system such web apps on smartphone or web service to access the home server by sending control commands. The home server receives the command, then controls for instance the light system. The web service gateway responsible for handling clients' requests attests an internet latency when an increasing number of end users requests submit toward it. Therefore, this web service gateway fails to detect several commands, slows down predefined actions which should be performed without human intervention. In this paper, we investigate the performance of a web server-side platgorm based event-driven, non-blocking approach called Node.js against traditional thread-based server side approach to handle a large number of client requests simultaneously for remote and controlling system in IoT remote monitoring applications. The Node.JS is 40% faster than the traditional web server side features thread-based approach. The use of Node.js server-side handles a large number of clients' requests, then therefore, reduces delay in performing predefined actions automatically in IoT environment.
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Nkenyereye, Lewis,Rhee, Kyung-Hyune Korea Multimedia Society 2016 멀티미디어학회논문지 Vol.19 No.7
Traffic violations such as moving while the traffic lights are red have come from a simple omission to a premeditated act. The traffic control center cannot timely monitor all the cameras installed on the roads to trace and pursue those traffic violators. Modern vehicles are equipped and controlled by several sensors in order to support monitoring and reporting those kind of behaviors which some time end up in severe causalities. However, such applications within the vehicle environment need to provide security guaranties. In this paper, we address the limitation of previous work and present a secure and privacy preserving protocol for traffic violation reporting system in vehicular cloud environment which enables the vehicles to report the traffic violators, thus the roadside clouds collect those information which can be used as evidence to pursue the traffic violators. Particularly, we provide the unlinkability security property within the proposed protocol which also offers lightweight computational overhead compared to previous protocol. We consider the concept of conditional privacy preserving authentication without pairing operations to provide security and privacy for the reporting vehicles.
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A secure billing protocol over attribute-based encryption in vehicular cloud computing
Nkenyereye, Lewis,Park, Youngho,Rhee, Kyung Hyune Springer (Biomed Central Ltd.) 2016 EURASIP journal on wireless communications and net Vol.2016 No.-
<P>The integration of cloud computing into vehicular ad hoc networks (VANETs) has allowed the possibility of offering multiple services to the vehicle owners ranging from safety to entertainment services. The ubiquitousness of cloud computing involves a multitude of service providers; thus, an efficient and secure access control mechanism is required. However, rigorous security features need to be addressed for such commercial-based services to be fully adopted. In this paper, we present a secure billing protocol over attribute-based encryption in vehicular cloud computing. We achieve the identity privacy of the vehicles and their requested services through pseudonym techniques. Certificateless signature scheme is used to assure the authentication of legitimate vehicles which can enjoy the provided services. We use attribute-based encryption to guarantee access control based on the purchased services. We make use of hash chain technique to provide authorization through electronic voucher (credits) which a vehicle has to possess in order to purchase a service. Unlike existing protocols in VANETS, the proposed protocol is not built on expensive bilinear pairing operations. We provide the efficiency of the proposed protocol through performance analysis and simulation.</P>
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Lionel Nkenyereye,Jong-Wook Jang 한국인터넷방송통신학회 2016 Journal of Advanced Smart Convergence Vol.5 No.3
With the help of a small wearable device, patients reside in an isolated village need constant monitoring which may increase access to care and decrease healthcare delivery cost. As the number of patients’ requests increases in simultaneously manner, the web service gateway located in the village hall encounters limitations for performing them successfully and concurrently. The gateway based RESTful technology responsible for handling patients’ requests attests an internet latency in case a large number of them submit toward the gateway increases. In this paper, we propose the design tasks of the web service gateway for handling concurrency events. In the procedure of designing tasks, concurrency is best understood by employing multiple levels of abstraction. The way that is eminently to accomplish concurrency is to build an object-oriented environment with support for messages passing between concurrent objects. We also investigate the performance of event-driven architecture for building web service gateway using node.js. The experiments results show that server-side JavaScript with Node.js and MongoDB as database is 40% faster than Apache Sling. With Node.js developers can build a high-performance, asynchronous, event-driven healthcare hub server to handle an increasing number of concurrent connections for Remote Healthcare Monitoring System in an isolated village with no access to local medical care.
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Intelligent Transport Data Collection Strategy in Software Defined Edge Vehicular Network
Lionel Nkenyereye,Minyoung Kim(김민영),Seil Park(박세일),Jong-Wook Jang(장종욱) 한국통신학회 2019 한국통신학회 학술대회논문집 Vol.2019 No.1
Software Defined Network (SDN) and edge computing are emerging technologies in information and communication technology to minimize data collection latency on the Internet of Vehicles (IoV). The car has the potential to contribute to the development of smart cities by accessing urban data that are collected and reported to a remote data centers through wireless communication This paper presents the study on intelligent transport data collection strategy in a Software- Defined Edge vehicular networking. The two sensing data collection schemes are cooperative vehicular and edge prediction mode based Software Defined Vehicular Network (SDVN). We prove that urban data collection cost through a novel algorithm called car sensing platform for urban data collection algorithm to find an optimal strategy. We set up a simulation scenario based on realistic traffic and communication features and demonstrate the scalability of the proposed intelligent transport data collection strategy. It can be seen that the edge cell predictive trajectory decision-based SDEVN mode scheme reduces greatly the cost when the road seems to have a high number of the vehicle.
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Data Management of Connected vehicle applications using Big Data technology
Lionel Nkenyereye,Jong-Wook Jang 한국정보통신학회 2015 2016 INTERNATIONAL CONFERENCE Vol.7 No.1
Big Data technology is among many technology concepts which enable to understand the challenges of data management and enables real-time analysis and perform predictions of outcomes and behaviors. The right to efficiently process large quantities data with a tolerable time will create massive value for business. In this paper, we present a data management of Connected vehicle applications using Big Data technology which applied distributed file system technology, MapReduce algorithms for manipulating relational data on performing relational join MapReduce functions to sort out deeply analytics patterns to analyze vast quantities of vehicles on board diagnostics data generated by connected vehicles. Experiment results show that MapReduce join algorithm is highly scalable and optimized for distributed computing than Statistical Analysis System (SAS) framework.
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