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IEEE Region 5 Annual Technical Conference

作者： W. Adi A. Dawood A. Mabrouk Sarhan M. Musa Institute of Computer and Communication Network Engineering Technical University of Braunschweig Brunswick Germany Communication Engineering Department Etisalat University College Sharjah UAE Lufthansa Systems AS Kelsterbach Germany Engineering Technology Department Prairie View A and M University Prairie View TX USA

Hand-held mobile devices are having a wide spectrum of applications. Such devices which incorporate sending images of relevant legal significance require certifying the source of the image. Hand-held devices inherently have very limited energy resources. The aim of this work is to propose low energy authentication mechanism even when using public-key cryptography. We proposed a technique for fast public-key image authentication using fuzzy-computations for the El-Gamal authentication technique. The fuzzy operations are embedded in the authentication computations to sign images without performing high complexity operations such as exponentiations. The result is low complexity and low energy processing on the mobile device site. The technique is rather general and can be deployed similarly for other similar environments. The fact that power consumption/speed is becoming an essential issue for hand-held devices make this technique very promising for future applications.

关键词： Authentication Public key cryptography Public key Image coding Mobile computing Watermarking Data security Application software computer applications computer networks

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Middleware based Inpatient Healthcare Information System

Middleware based Inpatient Healthcare Information System

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IEEE Symposium on Bioinformatics and Bioengineering (BIBE)

作者： S. H. Hsieh S. L. Hsieh Y. C. Weng T. H. Yang Feipei Lai P. H. Cheng X.O. Ping M. Y. Jan J.C. Lin C.H. Peng K.H. Huang L. F. Ko C. H. Chen K. P. Hsu 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 Information Management National Taiwan University Taipei Taiwan Department of Electrical Engineering National Taiwan University Taipei Taiwan

The paper presents a multi-tier, integrated, distributed, inpatient healthcare information system based on service oriented architecture (SOA) .NET environment in National Taiwan University Hospital (NTUH). The architecture and outcomes of the newly developed inpatient information system (IIS) platform are discussed in details. We also present mechanisms of integration as well as interoperability among the components and multi-database in IIS via health level seven (HL7) Middleware layer. The preliminary performance of the current operating IIS is evaluated and analyzed to verify the efficiency and effectiveness of the architecture we designed.

关键词： Middleware Medical services Information systems Service oriented architecture Portals Hospitals Picture archiving and communication systems Switches Engines computer science

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A Study of Alloyed Nanowires from Two Perspectives: Approximate Dispersion and Transmission

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AIP Conference Proceedings 2007年第1期893卷 711-712页

作者： Gerhard Klimeck Timothy B. Boykin Mathieu Luisier Neerav Kharche Andreas Schenk 1Network for Computational Nanotechnology Purdue University West Lafayette IN 47906 2Jet Propulsion Laboratory California Institute of Technology Pasadena CA 91109 3Department of Electrical and Computer Engineering University of Alabama Huntsville AL 35899 4Integrated Systems Laboratory ETH Zürich 8092 Zürich Switzerland

Local atomic arrangement in heterostructures or disorder due to alloying, surface roughness and impurities strongly influence the bandstructure and charge transport. With decreasing diameters down to nanometer scales, disorder can no longer be treated in an average manner using the virtual crystal approximation (VCA) and the need for atomistic simulations arises. This work looks at the nanoscale devices from two different perspectives. The materials science perspective in which average bandstructure of the whole nanowire is computed using the nanoelectronic modeling tool (NEMO‐3D) and the zone‐unfolding algorithm. The device physics perspective, where the transmission coefficient is calculated with an atomistic non‐equilibrium Green’s function (NEGF) approach. Both approaches use 20 band sp3d5s* empirical tight‐binding model with spin orbit coupling. The connection between dispersions and transmission coefficients of AlGaAs random alloy nanowires is highlighted. Both, transmission coefficients and average bandstructures show reduced bandgaps and noisy behavior. Their complimentary and mutually supporting nature provides a significant insight into the physics of charge transport through disordered systems.

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Waters network's potential to transform environmental engineering education

Waters network's potential to transform environmental engine...

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114th Annual ASEE Conference and Exposition, 2007

作者： Eschenbach, Elizabeth Montgomery, Jami Johnson, James Brus, Chris Carlson, Patricia Giammar, Dan Grauer, Bette Hotaling, Liesl Oguntimein, Gbekeloluwa Safferman, Steven Wentling, Tim Humboldt State University United States Department of Environmental Resources Engineering Humboldt State University United States WATERS Network - CLEANER Project Office Network Howard University United States Department of Environmental Engineering College of Engineering Architecture and Computer Sciences Howard University United States American Academy of Environmental Engineers United States University of Iowa United States Program University of Iowa United States Rose-Hulman Institute of Technology United States Department of Rhetoric Rose-Hulman Institute of Technology United States National Research Council U. S. Air Force United States NASA's Classroom of the Future Wheeling WV United States Washington University United States Department of Energy Environmental and Chemical Engineering Washington University St. Louis United States Environmental Studies Program Center for Materials Innovation United States McPherson High School United States McPherson High School McPherson KS United States Stevens Institute of Technology United States Stevens Institute of Technology United States Morgan State University United States Michigan State University United States Biosystems and Agricultural Engineering Department Michigan State University United States University of Dayton United States Education Planning Committee National Center for Supercomputing Applications United States Department of Information Science Graduate School of Library and Information Science National Center for Supercomputing Applications University or Illinois United States Knowledge and Learning Systems Group NCSA United States

The WATERS network (WATer and Environmental Research systems network) will be an integrated real-time distributed observing system which will enable academic and government scientists, engineers, educators, and practitioners to advance effective management of our nation's water resources by understanding human interactions with water and the natural and built environment. WATERS will provide easily accessible real time environmental data as well as analysis tools to engineers, scientists, educators, K- graduate students and policymakers so they can better understand how water quantity, quality and related components of the hydrologic cycle are impacted by natural and human influences. The WATERS strategic plan will be completed by July 2007 and requires constituent input. This paper describes the draft Conceptual Design and the Education Plan of WATERS network. This paper will highlight the potential impact of WATERS on undergraduate and graduate environmental engineering education in order to elicit input from the environmental engineering education community on how WATERS network could better meet the future needs of undergraduate and graduate students and educators. More information can be found at ***. © American Society for engineering Education, 2007.

关键词： Water resources

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Automated analysis of natural language properties for UML models

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MoDELS 2005 International Workshops OCLWS, MoDeVA, MARTES, AOM, MTiP, WiSME, MODAUI, NfC, MDD, WUsCAM

作者： Konrad, Sascha 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)3540317805

It is well known that errors introduced early in the development process are commonly the most expensive to correct. The increasingly popular model-driven architecture (MDA) exacerbates this problem by propagating these errors automatically to design and code. This paper describes a round trip engineering process that supports the specification of a UML model using CASE tools, the analysis of specified natural language properties, and the subsequent model refinement to eliminate errors uncovered during the analysis. This process has been implemented in SPIDER, a tool suite that enables developers to specify and analyze a UML model with respect to behavioral properties specified in terms of natural language. © Springer-Verlag Berlin Heidelberg 2006.

关键词： Natural language processing systems

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COCA: A contract-based infrastructure for composing adaptive multimedia systems

COCA: A contract-based infrastructure for composing adaptive...

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26th IEEE International Conference on Distributed Computing systems Workshops, ICDCS 2006

作者： Zhou, Zhinan McKinley, Philip K. Software Engineering and Network Systems Laboratory Department of Computer Science and Engineering Michigan State University East Lansing MI 48824 United States

ISBN: (纸本)0769525415

Achieving acceptable quality of service in highly dynamic computing environments requires not only adaptation and reconfiguration of individual components of the system, but also collaboration among these components. To address these issues in adaptive multimedia applications, we propose COCA, a contract-based collaborative adaptation infrastructure. COCA uses contract specifications to describe the relationships among different system components, to generate code that realizes adaptive functionality, and to govern system-wide adaptive behavior during execution. COCA also provides a set of reusable adaptation services that enable legacy components to be integrated into an adaptive system. We demonstrate the use of COCA to construct an adaptive multimedia conferencing system from a collection of existing components that were not originally designed for interoperation. © 2006 IEEE.

关键词： Multimedia systems

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Model-based development of dynamically adaptive software 06

Model-based development of dynamically adaptive software

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28th International Conference on Software engineering 2006, ICSE '06

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 United States

ISBN: (纸本)1595933751

Increasingly, software should dynamically adapt its behavior at run-time in response to changing conditions in the supporting computing and communication infrastructure, and in the surrounding physical environment. In order for an adaptive program to be trusted, it is important to have mechanisms to ensure that the program functions correctly during and after adaptations. Adaptive programs are generally more difficult to specify, verify, and validate due to their high complexity. Particularly, when involving multi-threaded adaptations, the program behavior is the result of the collaborative behavior of multiple threads and software components. This paper introduces an approach to create formal models for the behavior of adaptive programs. Our approach separates the adaptation behavior and nonadaptive behavior specifications of adaptive programs, making the models easier to specify and more amenable to automated analysis and visual inspection. We introduce a process to construct adaptation models, automatically generate adaptive programs from the models, and verify and validate the models. We illustrate our approach through the development of an adaptive GSM-oriented audio streaming protocol for a mobile computing application. Copyright 2006 ACM.

关键词： computer software

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Instant management infrastructure - Through network management support systems and software agents coordination

Instant management infrastructure - Through network manageme...

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International Conference on e-Business (ICE-B 2006)

作者： Folha, Jose A. Marques, Bruno F. Oliveira, Jose A. Coelho, Paulo M. Oliveira, Raul F. Responsible Network and Systems Management Superior School of Biotechnology Portuguese Catholic University Portugal Electrical and Computer Engineering's Department Engineering Faculty of University of Porto Portugal Electrical Engineering Department Polytechnic Institute of Viseu's Superior School of Technology Portugal Computer Science Department Polytechnic Institute of Viseu's Superior School of Technology Portugal

ISBN: (纸本)9728865627

Enterprises need to automate manual and routine aspects of IT infrastructure management. In this paper a new concept that integrates different autonomous and management level applications through Instant Messaging protocol (XMPP) is introduced. This is achieved by means of a common management information model implemented in LDAP. A content language implemented in XML is also described, allowing autonomous application integration to carry out management tasks dynamically.

关键词： Internet services networking management applications LDAP basic Internet protocols software agents instant messaging

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A new efficient block-matching algorithm for motion estimation

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Journal of VLSI Signal Processing systems for Signal, Image, and Video Technology 2006年第1期42卷 21-33页

作者： Mahmoud, Hanan Goel, Sumeer Shaaban, Mohsen Bayoumi, Magdy Faculty of Engineering University of Alexandria University Buildings 9 Albert Street Semouha Alexandria 21321 Egypt Center for Advanced Computer Studies University of Louisiana at Lafayette 110 Rex Street Lafayette LA 70504 Faculty of Engineering University of Alexandria Computer Science Department Department of Computer Engineering Department of Computer Science Center for Advanced Computer Studies University of Louisiana Lafayette Technical Committee on Circuits and Systems for Communication Technical Committee on Signal Processing Design and Implementation Neural Network and the Multimedia Technology Technical Committees University of Louisiana Lafayette

This paper presents a new full-search block-matching algorithm: Multi-stage Interval-based Motion Estimation algorithm (MIME). The proposed algorithm is a block based motion estimation algorithm that utilizes successive elimination technique. We define two approximate functions, as the upper and lower boundaries of the interval that includes the Conventional distortion metric SAD. Each stage in the proposed algorithm;except for the last stage;incorporates low resolution pixels for the boundary functions calculations. The final stage is a full resolution block matching stage. MIME has a high probability of finding the optimal motion vector at any stage of the algorithm. The proposed algorithm reduces the computational complexity by successively eliminating non-candidate blocks from the search window at each stage. This computational reduction leads to enhanced performance in terms of low power consumption and fast motion vector estimation. A low power VLSI implementation of the algorithm is also presented in this paper. Simulation results on benchmark video sequences shows that MIME algorithm eliminates almost 88% of the candidate blocks after only two interval based stages. © Springer Science + Business Media, Inc. 2006.

关键词： Motion estimation

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On packet aggregation mechanisms for improving VoIP quality in mesh networks

On packet aggregation mechanisms for improving VoIP quality ...

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2006 IEEE 63rd Vehicular Technology Conference, VTC 2006-Spring

作者： Kyungtae, Kim Ganguly, Samrat Izmailov, Rauf Sangjin, Hong IP Network and Distributed Systems NEC Laboratories America Princeton NJ 08540 Mobile Systems Design Laboratory Department of Electrical and Computer Engineering State University of NY Stony Brook NY 11794

ISBN: (纸本)0780393929

Performance in multihop wireless networks is known to degrade with the number of hops for both TCP and UDP traffic. For VoIP, the wireless network presents additional challenges as the perceived quality is dependent on loss, delay and jitter. Furthermore, small size of VoIP packets aggravates network utilization of the 802.11 based wireless mesh network. In this work, we evaluate the packet aggregation algorithms to reduce VoIP protocol overhead, compare the aggregation algorithms and propose a distributed packet aggregation mechanism. The experimental results demonstrates that the proposed distributed packet aggregation algorithm improves the VoIP quality and results in significant increase in the number high quality VoIP calls supported over multihop mesh. © 2006 IEEE.

关键词： Wireless networks

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