检索结果-内蒙古大学图书馆

IEEE computer Society Annual Symposium on VLSI

作者： X. Kavousianos D. Bakalis M. Bellos D. Nikolos Computer Science Department University of Ioannina (UoI) Ioannina Greece Computer Engineering & Informatics Department University of Patras Patras Greece Research Academic Computer Technology Institute Patras Greece

This paper presents a novel test vector ordering method for average power consumption minimization. The proposed method orders the test vectors taking into account the expected switching activity at the primary inputs and at a very small set of internal lines of the circuit under test. The computational time required by the proposed method is very small while the power reduction achieved is very close to the best, with respect to power reduction, most time-consuming method. Experimental results show that apart from average power reduction, the proposed method achieves significant peak power reduction too.

关键词： System testing Very large scale integration computer Society

来源：评论

学校读者我要写书评

暂无评论

Dynamic Shortest Paths Containers

引用

Electronic Notes in Theoretical computer Science 2004年 92卷 65-84页

作者： Dorothea Wagner Thomas Willhalm Christos Zaroliagis Institut für Logik Komplexität und Deduktionssysteme Universität Karlsruhe 76128 Karlsruhe Germany Computer Technology Institute and Department of Computer Engineering & Informatics University of Patras 26500 Patras Greece

Using a set of geometric containers to speed up shortest path queries in a weighted graph has been proven a useful tool for dealing with large sparse graphs. Given a layout of a graph G =( V , E ), we store, for each edge ( u , v )∈ E , the bounding box of all nodes t ∈ V for which a shortest u - t -path starts with ( u , v ). Shortest path queries can then be answered by Dijkstraś restricted to edges where the corresponding bounding box contains the target. In this paper, we present new algorithms as well as an empirical study for the dynamic case of this problem, where edge weights are subject to change and the bounding boxes have to be updated. We evaluate the quality and the time for different update strategies that guarantee correct shortest paths in an interesting application to railway information systems, using real-world data from six European countries.

关键词： geometric container dynamic shortest path graph layout

来源：评论

学校读者我要写书评

暂无评论

PASS: An expert system with certainty factors for predicting student success

PASS: An expert system with certainty factors for predicting...

引用

8th International Conference on Knowledge-Based Intelligent Information and engineering Systems, KES 2004

作者： Hatzilygeroudis, Ioannis Karatrantou, Anthi Pierrakeas, C. Department of Computer Engineering & Informatics University of Patras PatrasGR-26500 Greece R. A. Computer Technology Institute P.O. Box 1122 PatrasGR-26110 Greece Hellenic Open University 23 Saxtouri Str. PatrasGR-26221 Greece

ISBN: (纸本)9783540301325

In this paper, we present an expert system, called PASS (Predicting Ability of Students to Succeed), which is used to predict how certain is that a student of a specific type of high school in Greece will pass the national exams for entering a higher education institute. Prediction is made at two points. An initial prediction is made after the second year of studies and the final after the end of the first semester of the third (last) year of studies. Predictions are based on various types of student’s data. The aim is to use the predictions to provide suitable support to the students during their studies towards the national exams. PASS is a rule-based system that uses a type of certainty factors. We introduce a generalized parametric formula for combining the certainty factors of two rules with the same conclusion. The values of the parameters (weights) are determined via training, before the system is used. Experimental results show that PASS is comparable to Logistic Regression, a well-known statistical method. © Springer-Verlag Berlin Heidelberg 2004.

关键词： Students

来源：评论

学校读者我要写书评

暂无评论

Service differentiation and fairness control in WDM grooming networks

Service differentiation and fairness control in WDM grooming...

引用

IEEE Conference and Exhibition on Global Telecommunications (GLOBECOM)

作者： K. Mosharaf J. Talim L. Lambadaris L. Marmorkos Department of Systems and Computer Engineering Carleton University Ottawa ONT Canada Department of Informatics and Telecommunication Institute of Technology Larissa Greece

We investigate a call admission control (CAC) mechanism to provide service differentiation and fairness control in a WDM network with grooming capabilities. A WDM grooming network can handle different classes of traffic streams which differ by their bandwidth requirements. We assume that for each class, call interarrival and holding times are exponentially distributed. Using a Markov decision process approach, an optimal CAC policy is derived to provide service differentiation in the network. The policy iteration algorithm is used to numerically compute the optimal policy. Furthermore, we propose an heuristic decomposition algorithm with lower computational complexity and very good performance. Simulation results compare the performance of our proposed policy with that of complete sharing and complete partitioning policies.

关键词： Intelligent networks Wavelength division multiplexing WDM networks Bandwidth Telecommunication traffic computer networks Telecommunication control Call admission control Partitioning algorithms Heuristic algorithms

来源：评论

学校读者我要写书评

暂无评论

A new pricing mechanism for a high-priority diffserv-based service

A new pricing mechanism for a high-priority diffserv-based s...

引用

International Conference on Advanced Communication technology (ICACT)

作者： C. Bouras A. Sevasti Department of Computer Engineering and Informatics University of Patras Patras Greece Research Academic Computer Technology Institute Patras Greece Greek Research and Technology Network S. A. Athens Greece

QoS provisioning according to the DifTServ framework has raised the requirements for pricing mechanisms that preserve the potential and flexibility of DiffServ. At the same time, such mechanisms should reflect resource usage, allocate resources efficiently, reimburse costs or maximize service provision profits and lead customers to requesting services that will maximize their revenue. This work proposes a policy for pricing based on resource allocation by a particular category of DiffServ-based services for aggregated traffic in the case of transport networks. Our research takes into account the particularities that apply to the case of DiffServ services' provision over transport networks while imposing minimal overload and a-priori estimation of costs. The detailed pricing methodology is presented and experimentally evaluated.

关键词： Pricing Costs Diffserv networks Quality of service Resource management Telecommunication traffic Contracts computer networks Web and internet services Quality management

来源：评论

学校读者我要写书评

暂无评论

Electronic national lotteries

引用

8th International Conference on Financial Cryptography, FC 2004

作者： Konstantinou, Elisavet Liagkou, Vasiliki Spirakis, Paul Stamatiou, Yannis C. Yung, Moti Research and Academic Computer Technology Institute P.O. Box 1122 Patras26110 Greece Department of Computer Engineering and Informatics University of Patras Patras26500 Greece Department of Mathematics University of the Aegean Karlovassi Samos83200 Greece on Communications and Information Systems Security University of the Aegean and Athens University of Economics and Business Greece Computer Science Columbia University New YorkNY United States

ISBN: (纸本)3540224203

We describe the design and implementation of secure and robust protocol and system for a national electronic lottery. Electronic lotteries at a national level are a viable cost effective alternative to mechanical ones when there is a business need to support many types of "games of chance" and to allow increased drawing frequency. Electronic lotteries are, in fact, extremely high risk financial application: If one discovers a way to predict or otherwise claim the winning numbers (even once) the result is huge financial damages. Moreover, the e-lottery process is complex, which increases the possibility of fraud or costly accidental failures. In addition, a national lottery must adhere to auditability and (regulatory) fairness requirements regarding its drawings. Our mechanism, which we believe is the first one of its kind to be described in the literature, builds upon a number of cryptographic primitives that ensure the unpredictability of the winning numbers, the prevention of their premature leakages and prevention of fraud. We also provide measures for auditability, fairness, and trustworthiness of the process. Besides cryptography, we incorporate security mechanisms that eliminate various risks along the entire process. Our system which was commissioned by a national organization, was implemented in the field and has been operational and active for a while, now. © IFCA/Springer-Verlag Berlin Heidelberg 2004.

关键词： Cryptography

来源：评论

学校读者我要写书评

暂无评论

Gateway algorithm for fair bandwidth sharing

Gateway algorithm for fair bandwidth sharing

引用

IEEE International Conference on Communications (ICC)

作者： Wei Yi R. Makkar I. Lambadaris I. Marmorkos Department of System and Computer Engineering Carleton University Ottawa ONT Canada Department of Informatics and Telecommunicating Larissa Institute of Technology (TEI) Larissa Greece

In this paper we propose a Virtual Round Robin (VRR) gateway algorithm to enforce per-flow fair bandwidth allocation by keeping per-flow information. This mechanism achieves reasonably fair bandwidth allocation and is easily amenable to high-speed implementations. It uses a single FIFO queue with probabilistic drop-on-arrival. In our simulation study, we compare the performance VRR with other two algorithms, Random Early Detection (RED) and Flow Random Early Drop (FRED) (D. Lin and R. Morris, 1997). Our simulation results show that VRR outperforms RED and FRED in wide variety of scenarios.

关键词： Bandwidth Round robin Channel allocation Telecommunication computing Systems engineering and theory informatics Adaptive systems Programmable control Adaptive control IP networks

来源：评论

学校读者我要写书评

暂无评论

Simulation of ancient technology works using haptic interaction and gesture recognition 04

Simulation of ancient technology works using haptic interact...

引用

Proceedings of the 5th International conference on Virtual Reality, Archaeology and Intelligent Cultural Heritage

作者： G. Nikolakis D. Tzovaras S. Malassiotis M. G. Strintzis Informatics and Telematics Institute Centre for Research and Technology Hellas Thermi-Thessaloniki Greece Informatics and Telematics Institute Centre for Research and Technology Hellas and Electrical and Computer Engineering Department Aristotle University of Thessaloniki Thessaloniki Greece

ISBN: (纸本)9783905673180

The objective of the proposed application is the development of a new interactive application for the simulation of Ancient Greek technology works, with the use of advanced virtual reality and computer vision technologies. In order to achieve these objectives haptic interaction mechanisms and a gesture recognition system were implemented in a virtual environment platform. A novel collision detection method was developed and virtual reality agents were used in order to achieve the desired results. The developed system was evaluated by real users and conclusions were drawn concerning the potentiality of the proposed application.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Application service provision through the grid: business models and architectures

Application service provision through the grid: business mod...

引用

International Conference on Information technology: Coding and Computing (ITCC)

作者： B. Vassiliadis K. Giotopoulos K. Votis S. Sioutas N. Bogonikolos S. Likothanassis Digital Systems & Media Computing Laboratory Hellenic Open University Patras Greece Computer Technology Institute & Department of Computer Engineering and Informatics University of Patras Greece ZEUS Consulting LogicDIS Group

The new economy is the result of the information revolution that promotes the emergence of networked, ubiquitous and collaborative service provision. Furthermore, the globalisation of trade has increased the number of competitors, driving the need for federated and networked business models. In this paper we argue that next generation ASP models could benefit from the use of the grid. We describe a grid-enabled architecture for coordinated resource sharing and problem solving in dynamic, multi-institutional ASP vendors.

关键词： Application specific processors Business Application software Globalization computer networks Pervasive computing Virtual private networks computer architecture Collaboration Packaging

来源：评论

学校读者我要写书评

暂无评论

Feature extraction of EEG signals during right and left motor imagery

Feature extraction of EEG signals during right and left moto...

引用

SICE Annual Conference

作者： K. Inoue D. Mori K. Sugioka G. Pfurtscheller K. Kumamaru Department of Control Engineering and Science Factory of Computer Science and Systems Engineering Kyushu Institute of Technology Fukuoka Japan Department of Control Enginering and Science Kyusbu Institute of Technology Iizuka Fukuoka Japan Department of Medical Informatics Graz University of Technology Inffeldgasse Graz Austria

In this paper, feature extraction of EEG signals during right and left motor imagery is tried. As the extraction method, directed information analysis, pattern recognition based on AR model, and mixture probability algorithm based on AR model is used. The learning and feature extraction method in pattern recognition are discussed through the experimental studies.

关键词： Feature extraction Electroencephalography Brain modeling Monitoring Data mining Pattern recognition Information analysis Biomedical engineering Brain computer interfaces Clustering algorithms

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：