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With appearance of mobile devices such as cell phones, PDAs and smart phones, context-aware applications are becoming increasingly popular. Therefore, developers are always seeking for new and powerful developing tools for context-aware programming. Developers prefer to use fast and convenient development tools that can support all required possibilities for implementing a complete and user-friendly...
We present a novel approach for the measurement and estimation of network traffic utilization between network nodes in heterogeneous environment. We propose an enhanced equation to evaluate the performance of network interface via little law and queuing theories to improve the evaluation algorithm. To get accuracy results on the performance of simulation model, we verify and validate data from local...
University wireless Organizer is a software system which acts like an assistant for students in their university affairs. Its purpose is helping students in their outdoor activities in university environment. Its main aim is developing new university wireless organizer which is tackling existing feature shortages. First step of developing university wireless organizer is finding out of students requirements...
When plans are disrupted to accommodate changes in a software development project, the environment becomes unstable. This brings about chaos. ldquoChaosrdquo is real and we need to deal with it. This research is based on the premise that 1. Chaos has a pattern, and that it is possible to learn this pattern and 2. If we are able to measure chaos, we will be able to better manage the situation brought...
We present a novel approach for the measurement of one-way delays and throughput between network nodes in heterogeneous environment. This research investigates performance evaluation of remote data transfers on heterogeneous services and technologies environment. We propose an enhanced equation to evaluate the performance of network traffic management via Little Law and Queuing theory to improve the...
In response to the complexity of communication networks, simulation was and remains the only way to evaluate network performance. Unfortunately, traditional simulation methods are not adapted to all networks such as networks with quality of service and networks with dynamic aspect. To overcome this limitation, a new method to simulate dynamic networks based on multi-agents simulation had been proposed...
Data allocation can be used to improve data availability in distributed database environments. In such a system, a mechanism is required to distribute the data (allocate it) to the system nodes in the mobile or fixed network and to maintain the consistency of the data. The high increase for working in the disconnected mode leads to develop some models that handle the transactions during the connection,...
Packet networks are currently enabling the integration of heterogeneous traffic with a wide range of characteristics that extend from video traffic with stringent QoS requirements to best-effort traffic requiring no guarantees. QoS guarantees can be provided in packet networks by the use of proper packet scheduling algorithms. Similar to the trends of computer revolution, many scheduling algorithms...
Many mobile computing models try to solve many issues related to the mobile computing such as: mobile movement, data synchronization, embedded databases, data privacy and confidentiality, P2P dissemination models, middleware adaptability, and mobile transactions. In this paper we will focus on the last area which is the mobile transactions and a new model (The diagonal allocation grid and fixed timeout...
Packet networks are currently enabling the integration of heterogeneous traffic with a wide range of characteristics that extend from video traffic with stringent QoS requirements to best-effort traffic requiring no guarantees. QoS guarantees can be provided in packet networks by the use of proper packet scheduling algorithms. Similar to the trends of computer revolution, many scheduling algorithms...
Exploring virtual world will give a memorable experience to the users. Generally, they are expecting smooth navigation with high quality image drawn into their eyes. Nevertheless, when the virtual world is growing simultaneously with the number of objects, the navigation will be detained. Yet, the frame rates can become unacceptable. In this paper, we present and examine range detection approach for...
Virtual walkthrough application allows users to navigate and immerse in the generated 3D environment with computer graphics assist. The 3D environment requires a large amount of geometry to make it look realistic. When the number of geometry increase, the performance of the application will become slower. Consequently, it creates a conflict between the needs of realistic and real time. In this paper,...
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