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6th International Conference on Advanced Learning technologies, ICALT 2006

作者： Chen, Nian-Shing Kinshuk Hsieh, Sheng-Wen Yang, Stephen J. H. Department of Information Management National Sun Yat-sen University Taiwan Department of Information Systems Massey University New Zealand Dept. of Computer Science and Information Engineering National Central University Taiwan

ISBN: (纸本)0769526322

Blended learning (BL) is a hybrid of classroom learning and online learning that includes the conveniences of online courses without the complete loss of face-to-face (F2F) contact. Advancements in communication technologies now allow us to have synchronous distributed interactions that occur in real-time with close to the same levels of fidelity as in the F2F environment. Therefore, it is imperative that we understand how to create effective BL experiences that incorporate both traditional instruction and online instruction. This article uses mathematics model to formulate the transactional distance to compare the interaction distance of traditional centralized F2F and synchronous distributed F2F. Transactional distance is then used to know about the communication gap between learner and instructor, content, and other learners. Finally, the paper verifies the validity of the transactional distance calculated through the mathematical model with the help of survey that elicits students' perception towards those two environments. © 2006 IEEE.

关键词： E-learning

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Towards better understanding of agile values in global software development

Towards better understanding of agile values in global softw...

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11th International Workshop on Exploring Modeling Methods for systems.Analysis and Design, EMMSAD 2006 - Held in Conjunction with the 18th Conference on Advanced information systems. CAiSE 2006

作者： Ågerfalk, Pär J. Lero - The Irish Software Engineering Research Centre Dept. of Computer Science and Information Systems University of Limerick Ireland Örebro University SE-701 82 Örebro Sweden

Globally distributed software development (GSD) and agile methods are two current and important trends in software and systems.engineering. While agile methods seem to cope well with increasingly changing business environments, it is far from obvious how these light-weight processes can best contribute to GSD. In this paper, method rationale is proposed as an analytical tool to understand the values that underpin agile methods and how these map to the GSD domain. Specifically, the paper presents an initial analysis of the values and goals embraced by the 'agile manifesto' and compares briefly with partial results from an ongoing study on the use of agile methods in GSD.

关键词： Software design

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Efficient learning algorithms for agents mining time-changing data streams

Efficient learning algorithms for agents mining time-changin...

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CIMCA 2006: International Conference on Computational Intelligence for Modelling, Control and Automation, Jointly with IAWTIC 2006: International Conference on Intelligent Agents Web technologies and International Commerce

作者： Cohen, Lior Avrahami, Gil Last, Mark Kandel, Abraham Department of Information Systems Engineering Ben-Gurion University of the Negev Beer-Sheva 84105 Israel Dept. of Computer Science and Engineering University of South Florida Tampa FL 33620 United States

ISBN: (纸本)0769527310

Many continuously recorded data streams are generated by non-stationary processes, which may change over time, in some cases even drastically. Some adaptive learning agents deal with time-changing data streams by generating a new model from every incoming window of training examples. Though this solution should ensure an accurate and relevant model at all times, it may waste significant computational resources on continuous re-generation of nearly identical models during periods of stability. In this paper, we evaluate a series of efficient incremental algorithms that are nearly as accurate as existing online methods, sometimes even outperforming them, while being considerably cheaper in terms of the processing time. The proposed incremental techniques are based on the information Network classification algorithm. The incremental methods efficiency is demonstrated on realworld streams of road traffic and intrusion detection data. © 2006 IEEE.

关键词： Data mining

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Securing UML information flow using flowUML

Securing UML information flow using flowUML

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作者： Alghathbar, Khaled Farkas, Csilla Wijesekera, Duminda Information Systems Department College of Computer and Information Sciences King Saud University P.O. Box 51178 Riyadh 11543 Saudi Arabia Information Security Laboratory Dept. of Computer Science and Engineering University of South Carolina Columbia SC 29208 Dept. of Information and Software Engineering CSIS George Mason University Fairfax VA 22030 Faculty of Information Systems Kind Saud University Riyadh Saudi Arabia Department of Computer Science and Engineering University of South Carolina Columbia Department of Information and Software Engineering George Mason University Fairfax VA George Mason University

FlowUML is a logic-based system to validate information flow policies at the requirements specification phase of UML based designs. It uses Horn clauses to specify information flow polices that can be checked against flow information extracted from UML sequence diagrams. FlowUML policies can be written at a coarse grain level of caller-callee relationships or at a finer level involving passed attributes. Copyright © 2006, Australian computer Society Inc.

关键词： information management

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Panel: Authentication in constrained environments

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1st International Workshop on Secure Mobile Ad-hoc Networks and Sensors, MADNES 2005

作者： Burmester, Mike Gligor, Virgil Kranakis, Evangelos Tygar, Doug Zheng, Yuliang De Medeiros, Breno Dept. of Computer Science Florida State University Tallahassee FL 32306 United States Dept. of Electrical and Computer Engineering University of Maryland College Park MD 20742 United States Sch. of Computer Science Carleton University Ont. K1S 5B6 Canada Dept. of Electrical Engineering and Computer Science University of California Berkeley CA 94720-1776 United States Dept. of Software and Information Systems University of North Carolina Charlotte NC 28223 United States

This paper contains the summary of a panel on authentication in constrained environments held during the Secure MADNES'05 Workshop. These were transcribed from hand-written notes. © Springer-Verlag Berlin Hei... 详细信息

ISBN: (纸本)9783540366461

关键词： computer networks

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A low-power multithreaded processor for software defined radio

A low-power multithreaded processor for software defined rad...

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作者： Schulte, Michael Glossner, John Jinturkar, Sanjay Moudgill, Mayan Mamidi, Suman Vassiliadis, Stamatis University of Wisconsin Dept. of ECE 1415 Engineering Drive Madison WI 53706 United States Sandbridge Technologies 1 North Lexington Ave. White Plains NY 10512 United States Delft University of Technology Electrical Engineering Mathematics and Computer Science Department Delft Netherlands University of Wisconsin Madison Madison Embedded Systems and Architectures Group IEEE IEEE Computer Society Sandbridge Technologies Sandbridge Systems Software and Communications Software Groups Department of Electrical and Computer Engineering University OfWisconsin Madison Netherlands ACM

Embedded digital signal processors for software defined radio have stringent design constraints including high computational bandwidth, low power consumption, and low interrupt latency. Furthermore, due to rapidly evolving communication standards with increasing code complexity, these processors must be compiler-friendly, so that code for them can quickly be developed in a high-level language. In this paper, we present the design of the Sandblaster Processor, a low-power multithreaded digital signal processor for software defined radio. The processor uses a unique combination of token triggered threading, powerful compound instructions, and SIMD vector operations to provide real-time baseband processing capabilities with very low power consumption. We describe the processor's architecture and microarchitecture, along with various techniques for achieving high performance and low power dissipation. We also describe the processor's programming environment and the SB3010 platform, a complete system-on-chip solution for software defined radio. Using a super-computer class vectorizing compiler, the SB3010 achieves real-time performance in software on a variety of communication protocols including 802.11b, GPS, AM/FM radio, Bluetooth, GPRS, and WCDMA. In addition to providing a programmable platform for SDR, the processor also provides efficient support for a wide variety of digital signal processing and multimedia applications. © 2006 Springer science + Business Media, LLC.

关键词： Program processors

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GMSP: a generalized multi-hop security protocol for heterogeneous multi-hop wireless network

GMSP: a generalized multi-hop security protocol for heteroge...

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IEEE Conference on Wireless Communications and Networking

作者： Bin Xie A. Kumar S. Srinivasan D.P. Agrawal Computer Engineering and Computer Science Dept. University of Louisville Louisville KY Computer Information Systems Dept. University of Louisville Louisville KY Department of ECECS University of Cincinnati Cincinnati OH

Multi-hop cellular networks offer attractive benefits for the next generation of wireless communication by integrating ad hoc relaying to cellular networks. However, most of the existing architectures and protocols for multi-hop cellular networks suffer from a variety of security threats in an adversarial environment. The existing architectures and protocols are not capable of providing end-to-end security protection for mobile users. A generalized multi-hop security protocol (GMSP) is proposed in this paper to achieve an effective route discovery protection from a range of potential security threats. The proposed multi-hop security protocol integrates mobile IP security and ad hoc security schemes. Moreover, the proposed protocol is flexible enough for fulfilling security protection for most existing heterogeneous multi-hop cellular architectures

关键词： Spread spectrum communication Wireless application protocol Wireless networks Authentication Land mobile radio cellular systems Access protocols Routing protocols IP networks computer networks Distributed computing

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T-ANT: A nature-inspired data gathering protocol for wireless sensor networks

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Journal of Communications 2006年第2期1卷 22-29页

作者： Selvakennedy, S. Sinnappan, S. Shang, Yi School of Information Technologies University of Sydney NSW 2006 Australia School of Economics and Information Systems University of Wollongong Wollongong NSW 2522 Australia Dept. of Computer Science University of Missouri-Columbia Columbia MO 65211 United States

There are many difficult challenges ahead in the design of an energy-efficient communication stack for wireless sensor networks. Due to the severe sensor node constraints, protocols have to be simple yet scalable. To this end, collective social insects' behavior could be adopted to guide the design of these protocols. We exploit the simple heuristics of ant colony in foraging and brood sorting to design a hierarchical and scalable data gathering protocol. Also, we demonstrate how it could exploit data correlations in sensor readings to minimize communications cost in the data gathering process towards the sink. This approach selects only a subset of sensor nodes to reconstruct data for the entire network. A distributed variance estimation algorithm is introduced to capture data correlations with negligible state maintenance. It is shown that this algorithm is able to predict the values rather accurately. Due to the general robustness of any nature-inspired algorithm, our data gathering protocol is reliable. It is fully distributed, and promises scalability and substantial energy savings. © 2006 ACADEMY PUBLISHER.

关键词： Sensor nodes

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Common metrics for human-robot interaction

Common metrics for human-robot interaction

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HRI 2006: 2006 ACM Conference on Human-Robot Interaction

作者： Steinfeld, Aaron Fong, Terrence Kaber, David Lewis, Michael Scholtz, Jean Schultz, Alan Goodrich, Michael Robotics Institute Carnegie Mellon University Pittsburgh PA United States Intelligent Systems Division NASA Ames Research Center Moffett Field CA United States Dept. of Industrial Engineering North Carolina State University Raleigh NC United States Sch. of Information Science University of Pittsburgh Pittsburgh PA United States Information Access Div. NIST Gaithersburg MD United States Intelligent Systems Section US Naval Research Lab. Washington DC United States Computer Science Dept. Brigham Young University Provo UT United States

ISBN: (纸本)1595932941

This paper describes an effort to identify common metrics for task-oriented human-robot interaction (HRI). We begin by discussing the need for a toolkit of HRI metrics. We then describe the framework of our work and identify important biasing factors that must be taken into consideration. Finally, we present suggested common metrics for standardization and a case study. Preparation of a larger, more detailed toolkit is in progress. Copyright 2006 ACM.

关键词： Human computer interaction

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Proximity based access control in smart-emergency departments

Proximity based access control in smart-emergency department...

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IEEE Annual Conference on Pervasive Computing and Communications Workshops (PerCom)

作者： S.K.S. Gupta T. Mukheriee K. Venkatasubramanian T.B. Taylor Dept. of Computer Science and Engineering Arizona State University Tempe Arizona USA Arizona State University Tempe AZ US MediServe Information Systems Tempe Arizona USA

In this paper, we propose a proximity based automated access control (PBAC) model for smart-ED environments which improves the existing ED work-flow by automating mundane administrative procedure for secure information access, allowing caregivers to focus on the treatment of patients. The proposed access model builds on the traditional role-based access control model and extends it by including multiple authentication levels for preventing unauthorized access. We also provide a semi-formal specification for the PBAC model. We further validate it using ultra-wide-band (UWB) based prototype which was tested in ED

关键词： Access control Authentication information systems Medical treatment Hospitals computer science Ultra wideband technology Prototypes Testing information retrieval

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