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Using MDS codes for the key establishment of wireless sensor networks

1st International Conference on Mobile Ad-hoc and Sensor Networks, MSN 2005

作者： Deng, Jing Han, Yunghsiang S. Department of Computer Science University of New Orleans New Orleans LA 70148 United States Graduate Institute of Communication Engineering National Taipei University Sanhsia Taipei 237 Taiwan

ISBN: (纸本)3540308563

Key pre-distribution techniques for security provision of Wireless Sensor Networks (WSNs) have attracted significant interests recently. In these schemes, a relatively small number of keys are randomly chosen from a large key pool and loaded on the sensors prior to deployment. After being deployed, each sensor tries to find a common key shared by itself and each of its neighbors to establish a link key to protect the wireless communication between themselves. One intrinsic disadvantage of such techniques is that some neighboring sensors do not share any common key. In order to establish a link key among such neighbors, a multi-hop secure path may be used to deliver the secret. Unfortunately, the possibility of sensors being compromised on the path may render such establishment process insecure. In this work, we propose and analyze an Incremental Redundancy Transmission (IRT) scheme that uses the powerful Maximum Distance Separable (MDS) codes to address the problem. In the IRT scheme, the encoded secret link key is transmitted through multiple multi-hop paths. To reduce the total information that needs to be transmitted, the redundant symbols of the MDS codes are transmitted only if the destination fails to decode the secret. One salient feature of the IRT scheme is the flexibility of trading transmission for lower information disclosure. Theoretical and simulation results are presented to support our claim. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Wireless telecommunication systems

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Cover Picture: Proteolytic Actuation of Nanoparticle Self-Assembly (Angew. Chem. Int. Ed. 19/2006)

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Angewandte Chemie International Edition 2006年第19期45卷

作者： Todd J. Harris Geoffrey von Maltzahn Austin M. Derfus Erkki Ruoslahti Sangeeta N. Bhatia Prof. Harvard-MIT Division of Health Sciences and Technology Massachusetts Institute of Technology E19-502D Cambridge MA 02139 USA Fax: (+1) 617-324-0710 These authors contributed equally Department of Bioengineering University of California San Diego La Jolla CA USA Burnham Institute La Jolla CA USA Electrical Engineering and Computer Science/MIT Brigham & Women's Hospital Boston MA USA

Sterically shielded …︁ …︁ nanoparticles diffuse freely in solution and biological fluids until proteases expressed by cancer cells trigger them to self-assemble. In their Communication on page 3161ff., S. N. Bhatia and co-workers show that complimentary Fe 3 O 4 nanoparticle binding is inhibited by the attachment of protease-cleavable polymers. Cleavage of these polymers triggers “latent” nanoparticles to form multimeric assemblies with emergent properties.

关键词： magnetic properties nanostructures proteases self-assembly triggered assembly

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Growth of silica nanowires catalysed by Pd ion-implantation into Si (100)

Growth of silica nanowires catalysed by Pd ion-implantation ...

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2005 MRS Fall Meeting

作者： Sekhar, Praveen Kumar Sood, Dinesh K. Bhansali, Shekhar Nanomaterials and Nanomanufacturing Research Center Department of Electrical Engineering University of South Florida 4202 E. Fowler Ave. Tampa FL 33620 United States School of Electrical and Computer Engineering RMIT University 124 La Trobe Street Melbourne 3000 Australia

ISBN: (纸本)1558998543

Selective synthesis of silica nanowires on silicon wafers catalyzed by Pd ion implantation is *** of palladium suicide acts as seeds for nucleation of wires following a Vapor-Liquid-Solid (VLS) growth model. The consumption of silicide towards nanowire growth is confirmed through Rutherford Backscattcring Spectrometry (RBS). The influence of growth time, implantation dose and heating temperature on the structure and morphology of the wires is investigated. Optimization of these tunable parameters would be needed to facilitate controlled and directed bottom-up growth of silica nanowires. Such selective synthesis may enable a large number of applications in wide areas of future technologies such as localization of light, low dimensional waveguides for functional microphotonics, scanning near field optical microscopy (SNOM), optical interconnects, sacrificial templates, optical transmission antennae and biosensors. © 2006 Materials Research Society.

关键词： Nanowires

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Challenges for Conducting a Computing sciences National Study

Challenges for Conducting a Computing Sciences National Stud...

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Frontiers in Education (FIE) Conference

作者： M.S. Giguette K.C. Davis Computer Sciences and Computer Engineering Department Xavier University of Louisiana New Orleans LA USA Electrical & Computer Engineering and Computer Science Department University of Cincinnati Cincinnati OH USA

Conducting a national study in the computing sciences is a process that requires detailed planning and a consistent effort by researchers to accomplish the study's goals. This paper discusses the many challenges that were addressed when organizing and implementing a large study involving 50 colleges and universities from across the United States. Issues affecting both the coordinating institution, Xavier university of la, and one of the participating institutions, the university of Cincinnati, are discussed. The issues include the survey administration details, confidentiality and security of the survey data, evaluation of survey software packages, recruitment and retention of the participating institutions, the processes for Institutional Review Board approvals, and recruitment and compensation of students. The lessons that were learned by the researchers at Xavier are organized into a suggested methodology for conducting surveys of this scope

关键词： Recruitment computer science computer science education Cultural differences Programming profession Psychology Computational Intelligence Society Systems engineering education Process planning Organizing

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A DFT approach for diagnosis and process variation-aware structural test of thermometer coded current steering DACs

A DFT approach for diagnosis and process variation-aware str...

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Design Automation Conference

作者： R.O. Topaloglu A. Orailoglu Computer Science and Engineering Department University of California San Diego La Jolla CA USA Computer Science and Engineering Department University of California San Diego La Jolla CA

A design for test (DFT) hardware is proposed to increase the controllability of a thermometer coded current steering digital to analog converter. A procedure is introduced to reduce the diagnosis and structural test time from quadratic to linear using the proposed DFT hardware. To evaluate the applicability of the proposed technique, principal component analysis is used to create virtual process variations to simulate in lieu of semiconductor fabrication data. An architecture specific soft fault model is suggested for the diagnosis problem. Random errors according to the fault model are introduced in the virtual test environment on top of the process variations and it is shown that diagnosis of a fault is possible with high accuracy with the proposed method. The same technique employing principal component analysis is furthermore used to provide process variation-aware reference test comparison values for a structural test of the DAC. The structural test provides a mechanism to test for even unmodeled manufacturing faults. The process variation-aware test values help detect defects even under process variations. The proposed DFT hardware and method are low cost and quite suitable for a built-in self diagnosis and test implementation.

关键词： Testing Design for testability Hardware Principal component analysis Fault diagnosis Controllability Digital-analog conversion Analytical models Fabrication Manufacturing

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Efficient layout transformation for disk-based multidimensional arrays

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11th International Conference on High Performance Computing, HiPC 2004

作者： Krishnamoorthy, Sriram Baumgartner, Gerald lam, Chi-Chung Nieplocha, Jarek Sadayappan, P. Department of Computer Science and Engineering The Ohio State University ColumbusOH43210 United States Department of Computer Science Louisiana State University Baton RougeLA70803 United States Computational Sciences and Mathematics Pacific Northwest National Laboratory RichlandWA99352 United States

ISBN: (纸本)9783540241294

I/O libraries such as PANDA and DRA use blocked layouts for efficient access to disk-resident multi-dimensional arrays, with the shape of the blocks being chosen to match the expected access pattern of the array. Sometimes, different applications, or different phases of the same application, have very different access patterns for an array. In such situations, an array’s blocked layout representation must be transformed for efficient access. In this paper, we describe a new approach to solve the layout transformation problem and demonstrate its effectiveness in the context of the Disk Resident Arrays (DRA) library. The approach handles re-blocking and permutation of dimensions. Results are provided that demonstrate the performance benefit as compared to currently available mechanisms. © Springer-Verlag Berlin Heidelberg 2004.

关键词： computers

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Use of classroom presenter in engineering courses

Use of classroom presenter in engineering courses

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Frontiers in Education (FIE) Conference

作者： Richard Anderson Ruth Anderson Luke McDowell Beth Simon Department of Computer Science and Engineering University of Washington Seattle WA Department of Computer Science University of Virginia Charlottesville VA Department of Computer Science United States Naval Academy Annapolis MD Department of Computer Science and Engineering University of California at San Diego La Jolla CA

Instructors of computer science, engineering, and technology courses often teach using prepared slides displayed with a computer and data projector. While this approach has advantages, disadvantages can be severe - including limited flexibility in delivery of material, which hinders instructors' spontaneous adaptation to students. This paper describes Classroom Presenter, a Tablet PC-based presentation system that (1) allows instructors to regain flexibility in presentation using Tablet PC-supported digital inking in an application specifically designed for lecturing use, (2) supports role-specific views and interaction mechanisms in class, and (3) introduces novel affordances including the use of wireless technology and student devices to support active learning in the classroom. As of spring 2005, Classroom Presenter has been used in over 200 courses at more than 13 institutions. Here we take advantage of our large use-base to discuss Classroom Presenter's impact on student learning and summarize best practices for lecturing with this technology

关键词： computer science Data engineering computer displays Springs Ink Switches Mobile computing Materials science and technology Best practices Computational modeling

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Additive zero-knowledge and applications: spam prevention

Additive zero-knowledge and applications: spam prevention

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IEEE International Conference on Networks

作者： A. Saxena B. Soh Chunbo Ma Computer Science and Computer Engineering La Trobe University Bundoora VIC Australia School of Information Science and Technology Southwest Jiaotong University Chengdu Sichuan P. R. China

In this paper, we introduce the concept of additive zero knowledge. Essentially, an additive proof can be considered as a proof system involving many provers and one verifier such that the statements of all the provers are proved simultaneously. Our model of additive proofs is presented using constructions of blind group identification, aggregate signatures and chained signatures. The security of our protocols relies on the difficulty of the underlying Diffie-Hellman problem in bilinear maps. As applications, we present a novel method to prevent spam.

关键词： Unsolicited electronic mail Aggregates Application software computer science Knowledge engineering Security Protocols Additives Information science

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Risk in Trusted Decentralized Communications

Risk in Trusted Decentralized Communications

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International Conference on Data engineering Workshops

作者： O.K. Hussain E. Chang F.K. Hussain T.S. Dillon B. Soh School of Information Systems Curtin University of Technology WA Australia Faculty of Information Technology University of Technology Sydney NSW Australia Department of Computer Science and Computer Engineering La Trobe University VIC Australia

Risk is associated with almost every activity that is undertaken on a daily life. Risk associated with Trust, Security and Privacy. Risk is associated with transactions, businesses, information systems, environments, networks, partnerships, etc. Generally speaking, risk signifies the likelihood of financial losses, human casualties, business destruction and environmental damages. Risk indicator gives early warning to the party involved and helps avoid deserters. Until now, risk has been discussed extensively in the areas of investment, finance, health, environment, daily life activities and engineering. However, there is no systematic study of risk in Decentralised communication, which involves e-business, computer networks and service oriented environment. In this paper, we define risk associated with trusted communication in e-business and e-transactions; provide risk indicator calculations and basic application areas.

关键词： Information systems Uncertainty Australia Investments Finance Information technology computer science Information security Privacy Humans

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QoS-energy aware broadcast for sensor networks

QoS-energy aware broadcast for sensor networks

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8th International Symposium on Parallel Architectures, Algorithms and Networks, I-SPAN 2005

作者： Durresi, Arjan Paruchuri, Vamsi Barolli, Leonard Jain, Raj Louisiana State University Department of Computer Science 291 Coates Hall Baton Rouge LA United States Fukuoka Institute of Technology 3-30-1 Wajiro-Higashi Higashi-ku Fukuoka 811-0295 Japan Department of Computer Science and Engineering Washington University in St. Louis St. Louis MO 63130 United States

ISBN: (纸本)0769525091

We present QoS Geometric Broadcast Protocol (QoS-GBP), a novel broadcasting protocol for heterogeneous wireless ad hoc and sensor networks. While broadcasting is a very energy-expensive protocol, it is also widely used as a building block for a variety of other network layer protocols. Therefore, reducing the energy consumption by optimizing broadcasting is a major improvement in heterogenous sensor networking. QoS-GBP is a distributed algorithm where nodes make local decisions on whether to transmit based on a geometric approach. QoS-GBP enables a tradeoff among the need for neighborhood information (communication overhead) and the delay. QoS-GBP is scalable to the change in network size, node type, node density and topology. QoS-GBP accommodates seamlessly such network changes, including the presence of actors and mobile nodes in heterogeneous sensor networks. Through simulation evaluations, we show that QoS-GBP is very scalable and guarantees minimum delay. © 2005 IEEE.

关键词： Wireless telecommunication systems

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