Increasingly, software must adapt its behavior in response to changes in the supporting computing, communication infrastructure, and in the surrounding physical environment. Since most existing software was not design...
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Popularity of ubiquitous computing increases the importance of location-aware applications, which increases the need for finding location of the user. In this paper, we present a novel localization method for indoor e...
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ISBN:
(纸本)9780387748986
Popularity of ubiquitous computing increases the importance of location-aware applications, which increases the need for finding location of the user. In this paper, we present a novel localization method for indoor environments using Wi-Fi infrastructure. While localization using Wi-Fi is cost effective, handling the obstructions which are the main cause of signal propagation error in indoor environments is a challenging task. We address this problem in two levels, resulting in increased accuracy of localization. In the first level, we localize the residing area of user node in coarse granularity. Then, we use building layout to find the objects that attenuate the signal between the reference node and the coarse estimate of the location of user node. Using multi-wall propagation model, we apply corrections for all obstructions and find the location of user node. Empirical results based on experiments conducted in lab-scale, shows meter-level accuracy.
All the articles are invited reviews or invited research papers by leading biophotonics researchers and research groups from universities, as well as industry and government laboratories, and they can be structured in...
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All the articles are invited reviews or invited research papers by leading biophotonics researchers and research groups from universities, as well as industry and government laboratories, and they can be structured in three major themes: (i) biophotonics instrumentation and experimental techniques, (ii) biophotonic sensors, and (iii) nano-biophotonics: (i) Biophotonics Instrumentation and Experimental Techniques A ratiometric fluorescence imaging system for surgical guidance by E. Moriyama et al.; 5-ALA mediated fluorescence detection of gastrointestinal tumors by E. Borisova et al.; The impact of autonomic dysreflexia on blood flow and skin response in individuals with spinal cord injury by J. C. Ramella-Roman et al.; and Optical clearing of cranial bone by E. Genina et al. (ii) Biophotonics Sensors Optical biomedical diagnostics: sensors with optical response based on two-photon excited luminescent dyes for biomolecule detection by V. Yashchuk et al. and Sensitive label-free biomolecular detection using thin silicon waveguides by Adam Densmore et al. (iii) Nano-Biophotonics Nanotomography of cell surfaces with evanescent fields by M. Wagner et al.; A proposed method for thermal specific bioimaging and therapy technique for diagnostic and treatment of malignant tumors by using magnetic nanoparticles by I. M. Gescheit et al.; Ultra-short laser pulse heating of nanoparticles:
In computer-Communication networks, addressing and routing have been fundamental issues that have challenged researchers - resulting in myriads of addressing and routing protocols. In recent times, self-configuration ...
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As the Unified Modeling Language (UML) and model-driven development (MDD) become increasingly common in industry, many developers are faced with the difficult task of understanding how an existing UML model realizes s...
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Reprogramming is an essential service for wireless sensor networks. Authenticating reprogramming process is important as sensors need to verify that the code image is truly from a trusted source. There are two ways to...
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Wireless communication systems often require multiband receivers. The multiband operation is controlled by the voltage controlled oscillator (VCO). MOSFET switches are commonly used in the switched capacitor array in ...
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Multi-Agent systems (MAS) are collection of loosely coupled intelligent agents. These systems operate in a distributed, highly dynamic, unpredictable and unreliable environment in order to meet their overall goals. Ag...
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Increasingly, software must adapt its behavior in response to changes in the supporting computing, communication infrastructure, and in the surrounding physical environment. Since most existing software was not design...
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Increasingly, software must adapt its behavior in response to changes in the supporting computing, communication infrastructure, and in the surrounding physical environment. Since most existing software was not designed to adapt, research on technique to make legacy software dynamically adaptive has gained increasing interest. Assurance is crucial for adaptive software to fulfill its intended purpose. Correctness is even more critical if it is to be applied in high assurance systems. This paper proposes a model-driven approach to introduce dynamic adaptation to non-adaptive legacy systems while maintaining assurance properties. An aspect-oriented technique is applied to achieve separation of concerns in the implementation.
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