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IEEE Annual Joint Conference: INFOCOM, IEEE computer and Communications Societies

作者： P. Tague D. Slater J. Rogers R. Poovendran Network Security Lab (NSL) Electrical Engineering Department University of Washington Seattle WA USA Formation Technology Division Naval Research Laboratory Center for High Assurance Computer Systems Washington D.C. DC USA

We investigate the impact of node capture attacks on the confidentiality and integrity of network traffic. We map the compromise of network traffic to the flow of current through an electric circuit and propose a metric for quantifying the vulnerability of the traffic using the circuit mapping. We compute the vulnerability metric as a function of the routing and the cryptographic protocols used to secure the network traffic. We formulate the minimum cost node capture attack problem as a nonlinear integer programming problem. Due to the NP-hardness of the minimization problem, we provide a greedy heuristic that approximates the minimum cost attack. We provide examples of node capture attacks using our vulnerability metric and show that the adversary can expend significantly less resources to compromise target traffic by exploiting information leakage from the routing and cryptographic protocols.

关键词： Telecommunication traffic Circuit analysis Peer to peer computing Communication system security Cryptographic protocols Costs US Government Wireless sensor networks Routing protocols Information analysis

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A Newborn Screening System Based on Service-Oriented Architecture Embedded Support Vector Machine

A Newborn Screening System Based on Service-Oriented Archite...

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2008 IEEE International Symposium on Service-Oriented System engineering

作者： Sung-Huai Hsieh Sheau-Ling Hsieh Yin-Hsiu Chien Zhenyu Wang Yung-Ching Weng Feipei Lai Department of Computer Science and Information Engineering National Taiwan University Taipei Taiwan Information Systems Office National Taiwan University Hospital Taipei Taiwan Network and Computer Centre National Chiao Tung University Hsinchu Taiwan Department of Medical Genetics National Taiwan University Hospital Taiwan Computing Laboratory Oxford University Oxford UK Department of Electrical Engineering National Taiwan University Taipei Taiwan

The clinical symptoms of metabolic disorders are rarely apparent during the neonatal period, and if they are not treated early, irreversible damage, such as mental retardation, or even death, may occur. Therefore, the practice of newborn screening is important to the prevention of permanent disabilities in *** this paper, we propose a newborn screening system that uses Support Vector Machine (SVM) classification techniques to evaluate raw data on the concentrations of metabolic substances obtained from tandem mass spectrometry (MS/MS) to determine if a newborn has a metabolic disorder. As per the concept of Service-Oriented Architecture (SOA), we designed the system using web services techniques, which are suitable for integrating heterogeneous platforms, protocols, and applications. It can be integrated seamlessly into National Taiwan University Hospital Information systems (HIS) or other related HIS.

关键词： Pediatrics Service oriented architecture Support vector machines Diseases Hospitals Support vector machine classification Information systems Web services Mass spectroscopy Genetic engineering

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Novel MLSE Interference Canceller with an APC Circuit that Compensates for Phase Rotation of Interference Signals

Novel MLSE Interference Canceller with an APC Circuit that C...

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4th International Conference on Circuits and systems for Communications (ICCSC 2008), vol.2

作者： Hiroshi Yoshioka Yushi Shirato Kazuji Watanabe Keisuke Nakano Masakazu Sengoku NTT East Corporation Tokyo Japan NTT Network Service Systems Laboratories Tokyo Japan NTT Network Innovation Laboratories Tokyo Japan Department of Computer Engineering Niigata University Niigata Japan

We propose a novel interference canceller with an automatic phase control (APC) circuit that compensates for the phase error of interference signals. The proposed APC circuit estimates and compensates for the phase rotation of interference signals, enabling the proposed interference canceller with APC to achieve high BER performance. We use a maximum likelihood sequence estimation (MLSE) interference canceller for fixed wireless access (FWA) co-channel interferences. Degradations of signal replica accuracy incur a BER performance penalty. The novel APC circuit, which uses a simple estimation algorithm, can effectively compensate for frequency offset and phase rotation. computer simulations show that our proposed interference canceller improves BER performance.

关键词： MLSE FWA Interference canceller APC

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Towards re-engineering legacy systems for assured dynamic adaptation

Towards re-engineering legacy systems for assured dynamic ad...

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ICSE 2007 Workshops: International Workshop on Modeling in Software engineering, MISE'07

作者： Zhang, Ji Cheng, Betty H. C. Software Engineering and Network Systems Laboratory Department of Computer Science and Engineering Michigan State University East Lansing MI 48824

ISBN: (纸本)0769529534

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 techniques 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. © 2007 IEEE.

关键词： Legacy systems

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TAIL: Two-level approach for indoor localization

TAIL: Two-level approach for indoor localization

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IFIP WG 6.8 1st International Conference on Wireless Sensor and Actor networks, WSAN 2007

作者： Sudha Rani, V. Raghavan, S.V. Network Systems Laboratory Department of Computer Science and Engineering Indian Institute of Technology Madras Chennai - 600 036 India

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.

关键词： Location

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Biophotonics

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Advances in Optical Technologies 2008年第unknown期2008卷

作者： Tanev, Stoyan Wilson, Brian C. Tuchin, Valery V. Matthews, Dennis Department of Systems and Computer Engineering Faculty of Engineering and Design Carleton University Ottawa ON K1S 5B6 Canada Division of Biophysics and Bioimaging Ontario Cancer Institute University Health Network and University of Toronto Toronto ON M5G 2M9 Canada Research-Educational Institute of Optics and Biophotonics Saratov State University 410012 Saratov Russian Federation Center for Biophotonics Science and Technology Lawrence Livermore National Laboratory University of California Davis CA 95817 United States

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:

关键词： Biophotonics Microscopy Magnetic nanoparticles

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A framework for evolutionary networking

A framework for evolutionary networking

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ACM SIGCOMM 2007 Workshops - 2nd ACM International Workshop on Mobility in the Evolving Internet Architecture, MobiArch'07

作者： Gupta, Gautam Kumar Raghavan, S.V. Network Systems Laboratory Department of Computer Science and Engineering Indian Institute of Technology Madras Chennai 600 036 India

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 of nodes has become a necessity due to large number of networked devices and pervasive use of networks. Emergence of autonomic networks based on wireless mesh or ad hoc approach underline the need for self-configuration. Besides, success in sensor technology resulting in proliferation of wireless sensor networks is rapidly pushing the frontiers of self-configuration in large scale. The solutions reported hitherto in literature, has an interesting Addressing, Routing and Mobility (A.R.M.) issues have been tackled separately. In this work, we propose Protocol for Evolutionary Addressing (PEA) Framework, pronounced as "P", which solves the problem of addressing and routing in unison - thereby eliminating the need for separate routing algorithm. In PEA Framework, nodes assume addresses and self-configure the forwarding tables to reflect the changes in the network topology. Besides, PEA Framework enables self-configuration of nodes in a network so that the network naturally evolves (or readjusts) as it grows (or changes). We describe the framework, protocol, and evolution of network in addition to analyzing the time and message complexity of the protocol. © 2007 ACM.

关键词： network architecture

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Visualizing requirements in UML models

Visualizing requirements in UML models

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First International Workshop on Visualization in Requirements engineering, REV 2006, at the 14th IEEE Requirements engineering Conference, RE 2006

作者： Konrad, Sascha Goldsby, Heather Lopez, Karli Cheng, Betty H.C. Software Engineering and Network Systems Laboratory Department of Computer Science and Engineering Michigan State University East Lansing MI 48824 United States

ISBN: (纸本)0769527116

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 system requirements. Essentially, developers are required to understand the structure and behavior of UML models that they may have not created. Understanding these relationships is non-trivial, because the interactions in the model are not readily apparent. Commonly, the only means to elicit these relationships is visual inspection and guided simulation. This paper describes an alternative approach termed REVU (Requirements Visualization of UML), a process for visualizing functional requirements in terms of behavioral interactions in a UML model. We illustrate the use of this process with the visualization of scenarios for an adaptive light control system. © 2006 IEEE.

关键词： Requirements engineering

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Authentication in reprogramming of sensor networks for mote class adversaries

Authentication in reprogramming of sensor networks for mote ...

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21st International Parallel and Distributed Processing Symposium, IPDPS 2007

作者： Limin, Wang Kulkarni, Sandeep S. Software Engineering and Network Systems Laboratory Department of Computer Science and Engineering Michigan State University East Lansing MI 48824 United States

ISBN: (纸本)1424409101

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 achieve authentication: public key based and symmetric key based. Although previous work has shown that public key authentication is feasible on sensor nodes if used sparingly, it is still quite expensive compared to symmetric key based approach. In this paper, we propose a symmetric key based protocol for authenticating reprogramming process. Our protocol is based on the secret instantiation algorithm from [5, 11], which requires only O(log n) keys to be maintained at each sensor. We integrate this algorithm with the existing reprogramming protocol. Through simulation, we show that it is able to authenticate reprogramming process at very low communication cost, and has very short delay. ©2007 IEEE.

关键词： Sensor networks

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Thermally actuated multiband voltage controlled oscillator design with MEMS switch

Thermally actuated multiband voltage controlled oscillator d...

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Military Communications Conference, MILCOM 2007

作者： Shumin, Zhang Wansheng, Su Zaghloul, Mona E. Department of Electrical and Computer Engineering George Washington University Hughes Network Systems LLC 11717 Exploration Lane Germantown MD 20876 United States

ISBN: (纸本)1424415136

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 multiband VCOs, but the noisy MOSFET switches have a great impact on the phase noise performance of the system. This paper presents a thermally actuated MEMS switch used in a differential Colpitts VCO. The phase noise performance is 21 dB better than MOSFET switched VCO circuit. © 2007 IEEE.

关键词： Variable frequency oscillators

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