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Energy-Based Target Numeration in Wireless Sensor Networks

Energy-Based Target Numeration in Wireless Sensor Networks

引用

International Conference on Future Generation Communication and Networking (FGCN)

作者： Yan Guo Bei Hua Lihua Yue Department of Computer Science and Technology University of Science and Technology Hefei Anhui China Mobile Computing Laboratory USTC Suzhou Jiangsu China

Target numeration is of great importance for activity monitoring applications in wireless sensor networks (WSNs); however it is also a challenging problem in a WSN only equipped with simple amplitude sensors. Only a few algorithms have been proposed to solve the problem of target counting, and their accuracy and computational complexity is not satisfactory. This paper provides a two- step energy-based target numeration (EBTN) algorithm that firstly groups the sensor nodes that detect a target into separate clusters, and then calculates the number of targets covered by each cluster based on the total signal energy collected over the cluster. A polynomial regression function is used to approximate the signal strength over a cluster, and the total energy is estimated by taking the integral of the function over the area. By combining with preliminary clustering step, energy-based target counting greatly improves the counting accuracy. Experiments also show that EBTN requires lower node density and computational complexity compared with other algorithms.

关键词： Wireless sensor networks Clustering algorithms Monitoring Computational complexity Polynomials Acoustic sensors Area measurement computer science mobile computing computer networks

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Ubiquitous Intelligent Object: Modeling and Applications

Ubiquitous Intelligent Object: Modeling and Applications

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International Conference on Semantics, Knowledge and Grid (SKG)

作者： Miaomiao Wang Jiannong Cao Joanna Izabela Siebert Vaskar Raychoudhury Jing Li Department of Computer Science University of Science and Technology Hefei Anhui China Internets and Mobile Computing Laboratory Department of Computing Hong Kong Polytechnic University Kowloon Hong Kong China

Recently, research on ubiquitous computing has attracted a lot of research. Many existing works focus on the design and development of ubiquitous intelligent environments (UIEs). Essentially, UIE is composed of collections of ubiquitous intelligent objects (UIOs) and their interactions. Conceptualize and abstract the UIOs as well as exploring more UlO-oriented applications are essential to the future development of UIEs. However, so far, there has been no work on the formal description and modeling of UIOs. Addressing this deficiency, in this paper, we study the modeling of UIOs. We identify the model design principles and develop a model for representing the abstract data types and operations, as well as the relationships between the UIOs. We also discuss the challenging issues in implementing the model and present a ubiquitous searching application as an example to show how the proposed modeling techniques can be used.

关键词： Object oriented modeling Intelligent sensors pervasive computing Ubiquitous computing Grid computing Application software computer science Internet mobile computing Data privacy

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An Energy-Aware Protocol for Data Gathering Applications in Wireless Sensor Networks

An Energy-Aware Protocol for Data Gathering Applications in ...

引用

IEEE International Conference on Communications (ICC)

作者： M. Liu Y. Zheng J. Cao G. Chen L. Chen H. Gong School of Computer Science and Engineering University of Electronic Science and Technology China Internet and Mobile Computing Lab Department of Computing Hong Kong Polytechnic University Hong Kong China State Key Laboratory for Novel Software Technology Nanjing University China

Data gathering is a major function of many applications in wireless sensor networks (WSNs). The most important issue in designing a data gathering algorithm is how to save energy of sensor nodes while meeting the requirement of applications/users such as sensing area coverage. In this paper, we propose a novel hierarchical clustering protocol for long-lived sensor network. EAP achieves a good performance in terms of lifetime by minimizing energy consumption for in-network communications and balancing the energy load among all nodes. EAP introduces a new clustering parameter for cluster head election, which can better handle the heterogeneous energy capacities. Furthermore, it also introduces a simple but efficient approach, namely intra-cluster coverage to cope with the area coverage problem. We evaluate the performance of the proposed protocol using a simple temperature sensing application. Simulation results show that our protocol significantly outperforms LEACH and HEED in terms of network lifetime and the amount of data gathered.

关键词： Wireless application protocol Wireless sensor networks Energy consumption Application software Temperature sensors computer networks Clustering algorithms Peer to peer computing Scalability Paper technology

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Enabling a Plug-and-play integration of smart environments

Enabling a Plug-and-play integration of smart environments

引用

International Conference on Information and Communication Technologies: From Theory to Applications, ICTTA

作者： B. Abdulrazak A. Helal Mobile & Pervasive Computing Laboratory Computer and Information Science and Engineering Department University of Florida Gainesville FL USA

In this paper, we describe our research activity on the integration of technologies in the environment of aging people who would benefit from using adapted systems and accessible environment to compensate, even partly, problems of daily activities. The paper focuses on the concept of a smart house in the box, which is an idea of creating a smart house that needs a minimum engineering expertise, that does not require a significant system integration phase, and which reduce the cost of deployment. The paper describes our method that enables an easy integration and management of assistive space. It discusses the method of an automatic self-integration of devices in the house, including mechanisms of describing/identifying devices, mechanisms of sensing/detecting device and the mechanisms of installing devices. In this paper we also present the integration of the system in the Gator Tech Smart House (GTSH), which is a real house in a retirement complex, created specially to fit the needs of ageing people

关键词： pervasive computing mobile computing Aging Senior citizens Auditory system Europe Space technology computer architecture Information science Costs

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Performance of MIP/WLAN in Rapid Mobility Environments

Performance of MIP/WLAN in Rapid Mobility Environments

引用

ACS/IEEE International Conference on computer Systems and Applications

作者： Jun Tian A. Helal Mobile and Pervasive Computing Laboratory Computer & Information Science and Engineering Department University of Florida Gainesville FL USA

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A pervasive Internet approach to fine-grain power-aware computing

A pervasive Internet approach to fine-grain power-aware comp...

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Symposium on Applications and the Internet (SAINT)

作者： A. Abukmail A.S. Helal Pervasive Computing Laboratory Computer & Information Science & Engineering Department University of Florida Gainesville FL USA Computer & Information Science & Engineering Department Pervasive Computing Laboratory Gainesville FL USA

We present a novel approach to conserve power in networked mobile devices. Our approach exploits communication within a pervasive smart space as an opportunity to save power as opposed to the classic view of communication as a drain on resources. We outsource intensive computations to the network whenever a pervasive connection to the Internet exists and when it pays off to do so. At compile-time our approach generates two versions of the program being compiled, a client version and a server version, each containing the necessary code to handle the run-time decision of executing code locally on the mobile device or remotely to the server based on power efficiency. We utilize a technique from real-time systems to help the compiler generate highly accurate code by calculating the number of loop iterations for each candidate section of code. This approach has the advantage of analyzing applications at a finer granularity than other similar methodologies. This is because the candidate code sections are CPU blocks represented mostly by loops. Our experimental results performed on Intel's XScale architecture and the Wi-Fi wireless technology show significant savings in power consumption by the mobile device

关键词： Internet pervasive computing mobile communication computer networks IP networks Power generation Network servers Web server Runtime Real time systems

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uPen: a smart pen-liked device for facilitating interaction on large displays

uPen: a smart pen-liked device for facilitating interaction ...

引用

IEEE International Workshop on Horizontal Interactive Human-computer Systems (TABLETOP)

作者： Xiaojun Bi Yuanchun Shi Xiaojie Chen Key Laboratory of Pervasive Computing Department of Computer Science Tsinghua University Beijing China

This paper presents the uPen, a laser pointer combined with a contact-pushed switch, three press buttons and a wireless communication module. This novel interaction device allows users to interact on large displays at a distance or directly on the surface with full-function of mouse. Onboard software enable the uPen system to identify different users and provide personalized services to them, such as associating users with corresponding privileges, giving access to each participant's private content (e.g., home pages, personal calendars). Additionally, with our two-step association method, the uPen system has the ability to distinguish strokes of different uPens working simultaneously and support multiuser simultaneous interaction. A prototype system has been implemented in our smart classroom (Shi et al., 2003). And user studies show the benefit of using it.

关键词： Switches computer displays Home appliances Contacts Communication switching Wireless communication Mice Calendars Prototypes Large-scale systems

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A comparison of two programming models for pervasive computing

A comparison of two programming models for pervasive computi...

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Workshops on Applications and the Internet (SAINT)

作者： Hen-I Yang E. Jansen S. Helal Pervasive Computing Laboratory Computer & Information Science & Engineering Department University of Florida Gainesville FL USA

Establishing suitable programming models for pervasive spaces is essential in improving the productivity, enhancing the quality of pervasive systems, and creating an open platform for interoperability. Two different models, namely, the context-driven model and the service-oriented model, have been proposed and studied for their feasibilities as the foundation for implementing programmable pervasive spaces. We present these two alternatives and contrast their advantages and disadvantages.

关键词： pervasive computing Context modeling Programming profession Actuators Atomic measurements Productivity Context-aware services Educational programs Logic programming Laboratories

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Economy-Based Data Replication Broker

Economy-Based Data Replication Broker

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IEEE International Conference on e-science and Grid computing

作者： Henry Lin J.H. Abawajy Rajkumar Buyya Grid Computing and Distributed Systems Laboratory Department of Computer Science and Software Engineering University of Melbourne Melbourne VIC Australia Grid and Pervasive Computing Laboratory School of Engineering and Information Technology Deakin University Geelong VIC Australia

ISBN: (纸本)9781424430116

Data replication is one of the key components in data grid architecture as it enhances data access and reliability and minimises the cost of data transmission. In this paper, we address the problem of reducing the overheads of the replication mechanisms that drive the data management components of a data grid. We propose an approach that extends the resource broker with policies that factor in user quality of service as well as service costs when replicating and transferring data. A realistic model of the data grid was created to simulate and explore the performance of the proposed policy. The policy displayed an effective means of improving the performance of the grid network traffic and is indicated by the improvement of speed and cost of transfers by brokers.

关键词： Resource management Australia Telecommunication traffic Power generation economics Cost accounting Protocols Grid computing pervasive computing computer science Software

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An Abstract Model for Supporting Interoperability in mobile Ad-hoc Networks

An Abstract Model for Supporting Interoperability in Mobile ...

引用

IEEE International Conference on Wireless and mobile computing, Networking And Communications (WiMob)

作者： H. Safa H. Artail R. Shibli Department of Computer Science American University of Beirut Beirut Lebanon Mobile Computing and Networking Research Laboratory LARIM Ecole Polytechnique de Montreal Montreal Canada

Handheld devices in mobile ad hoc networks (MANETs) use different communication technologies (e.g., Bluetooth and IEEE 802.11) and are equipped with different software/hardware processing capabilities. This multi-level heterogeneity poses a serious challenge on the performance of MANETs and adds a number of characteristics, complexities, and constraints to their design. This paper proposes a communication abstract model that supports interoperability and coexistence between heterogeneous mobile devices. The model is represented through a three-layered paradigm: a communication service layer that deals with available communication capabilities; a communication capability layer that is responsible for controlling and managing the lower communication service layer and translating the high level functions of the available capabilities; and a communication interface layer that provides the applications with a unified public interface that supports various functionalities. Simulation results show that the proposed model, when used in a heterogeneous MANET environment, increases its performance in term of reliability and power saving, and yields a significant reduction in path length and delay

关键词： Intelligent networks Ad hoc networks mobile communication mobile ad hoc networks Bluetooth Communications technology Hardware Telecommunication network reliability Network topology Routing

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