检索结果-内蒙古大学图书馆

International Symposium on Signals, Circuits and systems (ISSCS)

作者： Ali Mosleh Farzad Zargari Reza Azizi Department of Computer Engineering Science & Research Branch Islamic Azad University Tehran Iran Multimedia Systems Research Group IT Faculty Iran Telecom Research Center Tehran Iran Department of Computer Engineering maybod Branch Islamic Azad University Iran

Content based image retrieval is a challenging issue in management of existing large digital image libraries and databases. The accuracy of image retrieval methods is subject to effective extraction of image features such as color, texture, and shape. In this paper we propose a new image retrieval method using contourlet transform coefficients. We use the properties of contourlet coefficients to assign the normal distribution function to the distribution of coefficients in each sub-band. The assigned normal distribution functions are used to extract the texture feature vector at the next stage. Simulation results indicate that the proposed method outperforms other conventional texture image retrieval methods such as, Gabor filter and wavelet transform. Moreover, this method shows a noticeable higher performance compared to another contourlet based method.

关键词： Image retrieval Feature extraction Gaussian distribution Information retrieval Content based retrieval Content management Digital images Software libraries Image databases Spatial databases

来源：评论

学校读者我要写书评

暂无评论

Study of Smart Card Technology and Probe User Awareness about It: A Case Study of Middle Eastern Students

Study of Smart Card Technology and Probe User Awareness abou...

引用

2009 2nd IEEE International Conference on computer science and Information Technology（ICCSIT 2009）

作者： Hamed Taherdoost Mazdak Zamani Meysam Namayandeh Centre for Advanced Software Engineering Universiti Teknologi Malaysia 54100 Kuala Lumpur Malaysia Faculty of Computer Science and Information Systems Universiti Teknologi Malaysia 54100 Kuala Lumpur Malaysia

Right now,in most of the countries,inside the people’s wallet,they probably have a couple of credit cards,an identification card,automatic machine teller cards(ATM card),and maybe a few other plastic *** realizing it,these plastic cards have become a very important part of their *** smart card technology improves security and convenient but it is not used in a wide range in Middle East *** acceptance is vital for further development of any fresh technology and smart card technology as *** of the factors that can effect on the acceptance of smart card technology is users’*** goal of this study is to present a general overview of smart card technology and identify the smart card’s benefits,features and characteristics and moreover,the level of users’knowledge and awareness about smart card technology will be *** order to achieve this goal,a survey was conducted among the international students of University Technology Malaysia to measure their awareness of smart card technology.

关键词： Smart card technology awareness security advantage application

来源：评论

学校读者我要写书评

暂无评论

Enhanced architecture for multimodality for real time monitoring of vessels in the Mauritian lagoon

Enhanced architecture for multimodality for real time monito...

引用

Eurocon

作者： Vinaye Armoogum Sheeba Armoogum Jaleel Polin Department of Industrial Systems Engineering from the School of Innovative Technologies and Engineering University of Technology Mauritius (UTM) Department of Computer Science and Engineering from the Faculty of Engineering University of Mauritius (UOM) Sch. of Adv. Comput. CDAC Mauritius

This paper is a continuation regarding the proposed architecture on multimodality discussed by Armoogum et al. It proposes further enhancements on the current architecture and explores other possibilities regarding its application in Mauritius. The enhanced architecture for multimodality is deployed on a 3G network instead using of only conventional GSM network and local phones line. This give rises to various possibilities such as MMS, real time video transmission, client application on Symbian phones with high volume of data transmission.

关键词： Monitoring Boats Mobile handsets Mobile communication Bluetooth Information security GSM Data communication Intelligent networks Tsunami

来源：评论

学校读者我要写书评

暂无评论

Proposal for artificial bone formation using powder-layered manufacturing: Surface and internal chemical composition of formed artificial bone

Transactions of Japanese Society for Medical and Biological ...

引用

Transactions of Japanese Society for Medical and Biological engineering 2009年第4期47卷 359-365页

作者： Yamazawa, Kenji Hashizume, Daisuke Nakao, Aiko Anzai, Masahiro Narahara, Hiroyuki Suzuki, Hiroshi Rapid Engineering Team Advanced Technology Support Division Riken Japan Cooperative Support Team Advanced Technology Support Division Riken Japan Advanced Engineering Team Advanced Technology Support Division Riken Japan Department of Mechanical Information Science and Technology Faculty of Computer Science and Systems Engineering Kyushu Institute of Technology Japan

In this study, we proposed a powder-layered manufacturing process, a type of rapid prototyping technique, to produce desired bone shapes for transplants using biomaterial powder. In the experiments, we used conventional inkjet-type equipment and orthopedic filling-paste powder (BIOPEX), mainly containing alphatribasic calcium phosphate as the forming material. To solidify the powder, we used a sodium chondroitin sulfate? dibasic sodium succinate anhydride aqueous solution as the binder liquid. This paper discusses the results of investigations on the internal and surface chemical characteristics of formed artificial bones, formed artificial bones hardened by immersion process, and paste type artificial bones used in clinical applications, to determine the suitability of the immersion conditions. The bones were immersed for five hours in immersion fluid made of water and binder liquid at 90 °C?To analyze the chemical constituent, X-ray diffraction and X-ray photoelectron spectroscopy were used. The results showed that the hydrate reaction caused by the application of the binder fluid during forming enhances hydroxyapatite (HA) concentration by about 6.5 times. With samples immersed in water, HA was found internally as well as from the surface, the quantity of which was about 80?, 11 times more than conventional paste type artificial bone. On the other hand, with the samples immersed in the binder fluid, no HA crystals were detected internally. The percentages of P and Ca present on the surface were minute. Given the high quantities of C, O, and Na present, the immersion process is thought to have formed a thin layer of binder fluid. These results from the experimental samples indicate that immersion in binder fluid which showed no problems in terms of chemistry and strength is most appropriate for clinical applications.

关键词： X ray photoelectron spectroscopy

来源：评论

学校读者我要写书评

暂无评论

A combined analytical and simulation-based model for performance evaluation of a reconfigurable instruction set processor

A combined analytical and simulation-based model for perform...

引用

Asia and South Pacific Design Automation Conference

作者： Farhad Mehdipour Hamid Noori Bahman Javadi Hiroaki Honda Koji Inoue Kazuaki Murakami Faculty of Information Science and Electrical Engineering Kyushu University Japan Institute of Systems Information Technologies and Nanotechnologies Japan Computer Engineering and IT Department Amirkabir University of Technology슠 Iran Department of Informatics Kyushu University Japan

ISBN: (纸本)9781424427482

Performance evaluation is a serious challenge in designing or optimizing reconfigurable instruction set processors. The conventional approaches based on synthesis and simulations are very time consuming and need a considerable design effort. A combined analytical and simulation-based model (CAnSO*) is proposed and validated for performance evaluation of a typical reconfigurable instruction set processor. The proposed model consists of an analytical core that incorporates statistics gathered from cycle-accurate simulation to make a reasonable evaluation and provide a valuable insight. Compared to cycle-accurate simulation results, CAnSO proves almost 2% variation in the speedup measurement.

关键词： Analytical models Performance analysis Computational Intelligence Society Information technology Java Design optimization Information analysis Computational modeling computer simulation Information science

来源：评论

学校读者我要写书评

暂无评论

Optimality of Affine Policies in Multi-stage Robust Optimization

Optimality of Affine Policies in Multi-stage Robust Optimiza...

引用

Joint 48th IEEE Conference on Decision and Control and 28th Chinese Control Conference

作者： Dimitris Bertsimas Dan A.Iancu Pablo A.Parrilo Faculty of the Sloan School of Management and the Operations Research Center Massachusetts Institute of Technology the Operations Research Center Massachusetts Institute of Technology the Laboratory for Information and Decision Systems and the Faculty of Electrical Engineering and Computer Science Massachusetts Institute of Technology

In this paper,we prove the optimality of disturbance-affine control policies in the context of onedimensional,box-constrained,multi-stage robust *** results cover the finite horizon case,with minimax(worstcase) objective,and convex state costs plus linear control *** proof methodology,based on techniques from polyhedral geometry,is elegant and conceptually simple,and entails efficient algorithms for the case of piecewise affine state costs,when computing the optimal affine policies can be done by solving a single linear program.

关键词： Optimality of Affine Policies in Multi-stage Robust Optimization

来源：评论

学校读者我要写书评

暂无评论

Managing Malware in Higher Learning Institutions

Managing Malware in Higher Learning Institutions

引用

International Conference on computer and Electrical engineering, ICCEE

作者： Zuraini Ismail Christine Simfukwe Department of Science College of Science & Technology International Campus Universiti Teknologi Malaysia Kuala Lumpur Malaysia Centre of Advanced Software Engineering Faculty of Computer Science and Information Systems International Campus Universiti Teknologi Malaysia Kuala Lumpur Malaysia

"Malware" is an umbrella term that describes a variety of Internet-borne threats, including viruses, spyware,Trojan horses, spam, bots and more. This sophisticated and evolving security threat puts all businesses at risk, no matter how big or small. Malware creates unique challenges to higher learning institutions (HLI) in protecting their information assets. This is largely due to the fact that HLI information technology (IT) departments must balance between enabling a highly collaborative, non-restrictive environment and ensuring the confidentiality, integrity, and availability of data and computing resources. HLIs can proactively defend the network to reduce the risks associated with this threat by assessing the vulnerabilities and threats present in their networks and implementing appropriate multilayer security. A multilayer approach involves applying countermeasures at every layer of the computer network, from the perimeter routers and firewalls to users' personal computers in order to increase network security. The goal of this study is to propose a framework for network security protection against malware to increase the level of protection using non technical countermeasures.

关键词： Protection Nonhomogeneous media Internet computer viruses Horses Information security Information technology Collaboration Availability Data security

来源：评论

学校读者我要写书评

暂无评论

A Skipping SvS Intersection Algorithm

A Skipping SvS Intersection Algorithm

引用

International Conference on Computing, engineering and Information, ICC

作者： Jaratdech Chatchaval Veera Boonjing Pisit Chanvarasuth Software Systems Engineering Laboratory Mathematics and Computer Science Department Faculty of Science King Mongkut''s Institute of Technology Ladkrabang Thailand School of Management Technology Sirindhorn International Institute of Technology Thammasat University Pathum Thani Thailand

In this paper, we propose to improve the SvS algorithm by skipping elements of the smaller set for reducing a search boundary. The boundary of skipped element is determined by boundaries of elements prior to and next to it. We perform experiments on uniformly distributed random datasets to compare our algorithm with the standard SvS. We use regression analysis to get an equation for determining an appropriate skipping number. Our results show that the skipping SvS algorithm using the equation obtained can reduce approximately 41% on the number of comparisons of the standard SvS algorithm.

关键词： Equations Software algorithms Software systems systems engineering and theory Laboratories Mathematics computer science Conference management Technology management engineering management

来源：评论

学校读者我要写书评

暂无评论

MedSiGRe: Medical Signal Grid Repository, an integration to Italica project

MedSiGRe: Medical Signal Grid Repository, an integration to ...

引用

Latin American Network Operations and Management Symposium, (LANOMS)

作者： Federico Milano Juan Francisco Garcia Eijo Adrian Gomez Fernan Gonzalez Bernaldo de Quiros Marcelo Risk Department of Information Systems Engineering Buenos Aires Regional Faculty National Technological University Argentina Laboratory of Complex Systems Department of Computer Science FCEyN University of Buenos Aires Argentina Department of Biomedical Informatics Italian Hospital of Buenos Aires Argentina

The Italica Project is the implementation of an electronic health record system at the Italian Hospital of Buenos Aires. The present work shows the implementation of a medical signal grid repository module and its integration to the Italica Project. We also describe the architecture of that module and explain the design decisions taken for its construction. The integration to the preexisting system is also presented, together with the difficulties that arose from the insertion of a data grid in an environment not used to this technology. Several issues about the security and reliability of the medical data are treated as well. In this paper we also discuss the use of the grid repository as a starting point for the development of distributed processing applications.

关键词： Java Protocols Virtual machining System testing Sockets Internet Performance evaluation Operating systems Educational programs computer languages

来源：评论

学校读者我要写书评

暂无评论

Robust audio steganography via genetic algorithm

Robust audio steganography via genetic algorithm

引用

International Conference on Information and Communication Technologies (ICICT)

作者： Mazdak Zamani Hamed Taherdoost Azizah A. Manaf Rabiah B. Ahmad Akram M. Zeki Faculty of Computer Science and Information Systems Universiti Teknologi Malaysia Kuala Lumpur Malaysia College of Science and Technology Universiti Teknologi Malaysia Kuala Lumpur Malaysia Centre of Advanced Software Engineering Universiti Teknologi Malaysia Kuala Lumpur Malaysia

Steganography is a technique used to transmit hidden information by modifying an audio signal in an imperceptible manner. The transmission must be possible in spite of subsequent imperceptible alterations (attacks) of the modified signal. We propose a novel approach of substitution technique of audio steganography. Using genetic algorithm, message bits are embedded into multiple, vague and higher LSB layers, resulting in increased robustness. The robustness specially would be increased against those intentional attacks which try to reveal the hidden message and also some unintentional attacks like noise addition as well.

关键词： Steganography Genetic algorithms Video sequences Humans Watermarking Noise robustness Internet DVD computer science Information systems

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：