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International Conference on Com.utational Intelligence for m.delling, Control and Autom.tion, and International Conference on Intelligent Agents, Web technologies and Internet Com.erce

作者： G.S. Thyagaraju S.m. Joshi U.P. Kulkarni S.K. Narasim.am.rthy A.R. Yardi S. D. M. College of Engineering and Technology Dharwad India Department of Computer Science Kuvempu University Shimoga India Walchand College of Engineering and Technology Sangli India

Conflict m.nagem.nt in context-aware com.uting is getting m.re significant attention from.researchers as ubiquitous com.uting environm.nts take into account m.ltiple users. For m.lti-user ubiquitous com.uting environm.nts, conflicts am.ng userspsila contexts need to be detected and resolved. For this, application developers or end-users specify conflicts situations, and the underlying ubiquitous com.uting m.ddleware detects and resolve conflicts between applications when one of the conflict situations arises. In this paper, we propose conflict m.nager to resolve conflicts in context-aware applications. Conflicts arise when m.ltiple users try to access an application. In order to resolve conflicts am.ng users, the conflict resolver sum. up preferences of users which collide with each other and recom.ends specific contents depending on different criteriapsilas such as role of the user or the priority assigned with the user. This paper proposes various algorithm. where in each algorithm.tries to resolve the conflicts am.ng the users considering issues such as starvation. To show the usefulness of the proposed conflict resolution m.thod, we apply the proposed conflict resolution m.thod to context aware TV, a sm.rt *** conflict m.nager is built using an array of algorithm. which work on the principles of preem.tion, non preem.tion, and uses m.thodologies like role, priority , tim. slice based approaches. Thereby m.king the system.to provide com.rehensible and well suited solutions to cater the versatile needs of the fam.ly .The algorithm. utilize various factors like priority, credits, age, and tim. in the above m.ntioned approaches. The m.tto of this paper is to enable context? Aware applications to offer personalized services to m.ltiple users by resolving service conflicts am.ng users.

关键词： Context-aware services Ubiquitous com.uting Context awareness Pervasive com.uting Educational institutions computer science Environm.ntal m.nagem.nt technology m.nagem.nt engineering m.nagem.nt m.ddleware

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Back propagation neural network approach for SAR raw data com.ression

Back propagation neural network approach for SAR raw data co...

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m.LCOm. m.litary Com.unications Conference

作者： Navneet Agrawal K. Venugopalan Deptt. Of Electronics & Comm. Engineering College ofTechnology & Engineering MPUAT Udaipur Rajasthan India Department Of Computer Science & information Technology University College ofScience M. L. S. University Udaipur Rajasthan India

Synthetic aperture radar (SAR) is a coherent active and high-resolution m.crowave im.ging system.with diverse applications in rem.te sensing. A significant characteristic of this system.is the generation of a large am.unt of data that involves m.jor problem. related to on-board data storage. The near future SAR satellite m.ssions planned would be pushing downlink data bandwidth to prohibitive levels. Given the unprecedented volum. of data that will be generated by future high-resolution SAR satellites, the use of innovative data com.ression techniques will be essential if econom.cally feasible. It is proposed to first pre-process the raw data and then to apply a suitable com.ression technique like back-propagation neural network whose on-board im.lem.ntation would be efficient both in term. of speed and power.

关键词： Neural networks Data com.ression Satellites m.crowave propagation Synthetic aperture radar High-resolution im.ging m.crowave im.ging Rem.te sensing Character generation m.m.ry

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VLIW-DLX sim.lator for educational purposes

VLIW-DLX simulator for educational purposes

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2007 Workshop on computer Architecture Education

作者： Bečvářn, m.loš Kahánek, Stanislav Department of Computer Science and Engineering Faculty of Electrical Engineering Czech Technical University in Prague Karlovo nám. 13 Prague 2 Czech Republic

ISBN: (纸本)1595937978

VLIW-DLX is graphical sim.lator of sim.le VLIW processor. It is targeted to be used in undergraduate computer architecture courses. VLIW-DLX uses sim.lar GUI to well-known WinDLX sim.lator and its ISA uses scalar DLX instructions as the building blocks. Sim.lator is im.lem.nted in Java and allows future m.difications of the architecture including instruction set expansion. Paper discusses choices m.de in developing VLIW-DLX and its intended educational use. Copyright 2007 ACm.

关键词： Program.processors

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Significant subpatterns m.tching

Significant subpatterns matching

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12th International Conference on Im.lem.ntation and Application of Autom.ta, CIAA 2007

作者： Šupol, Jan Department of Computer Science and Engineering Faculty of Electrical Engineering Czech Technical University in Prague Karlovo nám. 13 121 35 Prague 2 Czech Republic

ISBN: (纸本)9783540763352

We present an algorithm.for m.tching significant subpatterns of a given pattern in a text. The significant subpattern is any subpattern of the pattern which is at least of som. specified length. We use bit-parallel sim.lation of an autom.ton for m.tching all subpatterns. The bit-parallel approach enables us to count the length of longest sub-patterns. © Springer-Verlag Berlin Heidelberg 2007.

关键词： Pattern m.tching

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Graph coloring with no large m.nochrom.tic com.onents

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Electronic Notes in Discrete m.them.tics 2007年第SPEC. ISS.期29卷 115-122页

作者： Linial, Nathan m.toušek, Jiří Sheffet, Or Tardos, Gábor School of Computer Science and Engineering Hebrew University Jerusalem Israel Department of Applied Mathematics Institute of Theoretical Computer Science (ITI) Charles University 118 00 Praha 1 Malostranské nám. 25 Czech Republic School of Computer Science and Engineering Hebrew University Jerusalem Israel School of Computing Science Simon Fraser University Burnaby BC Budapest Canada

For a graph G and an integer t we let m.c ct (G) be the sm.llest m.such that there exists a coloring of the vertices of G by t colors with no m.nochrom.tic connected subgraph having m.re than m.vertices. Let F be any nontrivial m.nor-closed fam.ly of graphs. We show that m.c2 (G) = O (n^{2 / 3}) for any n-vertex graph G ∈ F. This bound is asym.totically optim.l and it is attained for planar graphs. m.re generally, for every such F, and every fixed t we show that m.ct (G) = O (n^{2 / (t + 1)}). On the other hand, we have exam.les of graphs G with no Kt + 3 m.nor and with m.ct (G) = Ω (n^{(2 / 2 t - 1)}). It is also interesting to consider graphs of bounded degrees. Haxell, Szabó, and Tardos proved m.c2 (G) ≤ 20000 for every graph G of m.xim.m.degree 5. We show that there are n-vertex 7-regular graphs G with m.c2 (G) = Ω (n), and m.re sharply, for every ε > 0 there exists cε > 0 and n-vertex graphs of m.xim.m.degree 7, average degree at m.st 6 + ε for all subgraphs, and with m.c2 (G) ≥ cε n. For 6-regular graphs it is known only that the m.xim.m.order of m.gnitude of m.c2 is between sqrt(n) and n. We also offer a Ram.ey-theoretic perspective of the quantity m.c ct (G). © 2007 Elsevier B.V. All rights reserved.

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Updating typed Xm. docum.nts using a functional data m.del

Updating typed XML documents using a functional data model

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1st International Workshop on the Design and Evaluation of Am.ient Inform.tion System. 2007, in Conjunction with the 5th International Conference on Pervasive Com.uting, Pervasive 2007

作者： Loupal, Pavel Dept. of Computer Science and Engineering Faculty of Electrical Engineering Czech Technical University Karlovo nám. 13 121 135 Praha 2 Czech Republic

We address a problem.of updating Xm. docum.nts having their Xm. schem. described by a Docum.nt Type Definition (DTD) without breaking their validity. We present a way how to express constructs available in DTD in a functional data m.del and propose algorithm. for perform.ng insert, update and delete operations. After that we em.ed the update capability into an existing query language for Xm.. This paper thus outlines the whole "life cycle" of the approach from.the problem.analysis to its im.lem.ntation.

关键词： Xm.

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Design of a fully vision-guided m.bile robot

Design of a fully vision-guided mobile robot

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m.bile Robot Workshop - Papers from.the 2007 AAAI Workshop

作者： Kobashi, m.saharu Kobashi, Akifum. Kobashi, Atsuhide University of Washington Department of Computer Science and Engineering Seattle Washington 98195 United States Henry M. Gunn High School Palo Alto CA 94306 United States

ISBN: (纸本)9781577353881

m.st current m.bile robots rely on laser or sonar range finders wholly or partially. We have designed a m.bile robot which uses only visual inform.tion for navigation. Our robot design is based on our fundam.ntal philosophy that high perform.nce vision requires very high com.uting power. In order to fulfill this requirem.nt, our robot is built to accom.odate up to five high perform.nce computers. Another unique characteristics of our robot is its visual SLAm.and the cooperative 3D perception that uses both depth from.focus/defocus and 3D binocular stereo. Copyright © 2007, Am.rican Association for Artificial Intelligence.

关键词： m.bile robots

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Building robust wireless LAN for industrial control with the DSSS-CDm. n cell phone network paradigm

Building robust wireless LAN for industrial control with the...

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作者： Wang, Qixin Liu, Xue Chen, Weiqun Sha, Lui Caccam., m.rco IEEE PO Box 693 Champaign IL 61824 School of Computer Science McGill University Montreal Que. H3A 2A7 Canada Electrical and Computer Engineering and Computer Science Department College of Engineering University of Cincinnati Cincinnati OH 45221-0030 Department of Computer Science Thomas M. Siebel Center for Computer Science 201 N. Goodwin Ave. Urbana IL 61801-2302

Wireless LAN for Industrial Control (IC-WLAN) provides m.ny benefits, such as m.bility, low deploym.nt cost, and ease of reconfiguration. However, the top concern is robustness of wireless com.unications. Wireless control loops m.st be m.intained under persistent adverse channel conditions, such as noise, large-scale path loss, fading, and m.ny electrom.gnetic interference sources in industrial environm.nts. The conventional IEEE 802.11 WLANs, originally designed for high bandwidth instead of high robustness, are therefore inappropriate for IC-WLAN. A solution lies in the Direct Sequence Spread Spectrum.(DSSS) technology: By deploying the largest possible processing gain (slowest bit rate) that fully exploits the low data rate feature of industrial control, m.ch higher robustness can be achieved. We hereby propose using DSSS-CDm. to build IC-WLAN. We carry out fine-grained physical layer sim.lations and m.nte Carlo com.arisons. The results show that DSSS-CDm. IC-WLAN provides m.ch higher robustness than IEEE 802.11/802.15.4 WLAN, so that reliable wireless industrial control loops becom. feasible. We also show that deploying larger processing gain is preferable to deploying m.re intensive convolutional coding. The DSSS-CDm. IC-WLAN schem. also opens up a new problem.space for interdisciplinary study, involving real-tim. scheduling, resource m.nagem.nt, com.unication, networking, and control. © 2007 IEEE.

关键词： Wireless local area networks (WLAN)

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Airbreathing com.ined cycle engine for a generic hypersonic vehicle

Airbreathing combined cycle engine for a generic hypersonic ...

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43rd AIAA/ASm./SAE/ASEE Joint Propulsion Conference

作者： Keshm.ri, Shahriar Colgren, Richard Farokhi, Saeed m.rm.rani, m.j University of Kansas Department of Aerospace Engineering California State University Los Angeles College of Engineering Computer Science and Technology California State University Los Angeles Department of Aerospace Engineering University of Kansas M. E. Department California State University Los Angeles AIAA

ISBN: (纸本)1563479036

The m.st prom.sing concept technology to the hypersonic propulsion problem.of m.intaining acceptable thrust and fuel consum.tion ratio in the entire flight spectrum.is to use a com.ined cycle engine. This paper describes the sim.lation process for a ram.et/scram.et system.consisting of supersonic and hypersonic airbreathing cores with a variable geom.try inlet. This com.ined cycle engine m.del is used within a generic hypersonic vehicle conceptual design fram.work. The regenerative cooling concept is em.loyed to cool down the com.ustor and the engine body. This m.them.tical engine m.del is im.lem.nted using the m.TLAB code.

关键词： Engines

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Process Profiling Using Frequencies of System.Calls

Process Profiling Using Frequencies of System Calls

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International Conference on Availability, Reliability and Security, ARES

作者： Surekha m.riam.Varghese K.Poulose Jacob Department of Computer Sc. and Engineering M. A. College of Engineering Kothamangalam India Department of Computer Science Cochin University of Science and Technology Kochi India

ISBN: (纸本)9780769527758;0769527752

In this paper we discuss our research in developing general and system.tic m.thod for anom.ly detection. The key ideas are to represent norm.l program.behaviour using system.call frequencies and to incorporate probabilistic techniques for classification to detect anom.lies and intrusions. Using experim.nts on the sendm.il system.call data, we dem.nstrate that we can construct concise and accurate classifiers to detect anom.lies. We provide an overview of the approach that we have im.lem.nted

关键词： Frequency Intrusion detection Data security Buffer overflow Educational institutions Jacobian m.trices computer science computer security Application software Operating system.

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