检索结果-内蒙古大学图书馆

international conference on Computer and Information science (ACIS)

作者： M.H. Shirali-Shahreza M. Shirali-Shahreza Computer Engineering Department Yazd University Yazd Iran Computer Science Department Sharif University of Technology Tehran Iran

Conveying information secretly and establishing hidden relationship has been of interest since long past. Text documents have been widely used since very long time ago. Therefore, we have witnessed different method of hiding information in texts (text steganography) since past to the present. In this paper we introduce a new approach for steganography in Persian and Arabic texts. Considering the existence of too many points in Persian and Arabic phrases, in this approach, by vertical displacement of the points, we hide information in the texts. This approach can be categorized under feature coding methods. This method can be used for Persian/Arabic watermarking. Our method has been implemented by Java programming language

关键词： steganography Information security Image coding Watermarking Cryptography Computer science Java Computer languages Image processing Pattern recognition

来源：评论

学校读者我要写书评

暂无评论

Model the MPI Performance for non-Contiguous Data

Model the MPI Performance for non-Contiguous Data

引用

international conference on Computer and Information science (ACIS)

作者： T.T. Le Department of Electrical Engineering San Jose State University Foundation San Jose CA USA

MPI (message passing interface) is the inter-node communication interface used in today PC clusters and other cluster-type parallel/distributed systems. Up-to-date the most popular analytical MPI performance model for parallel/distributed machines is the LogGP model, which is based on system hardware parameters. Recently, the improvements in connection network and communication protocols have lead to the dramatically changes in the contributions of hardware parameters to the model communication time. So LogGP model needs to be re-evaluated for its format and hardware parameters, to include the effect of message structures, which is in form of communication middleware overheads. In this paper, we use our experiment results to show that the current LogGP communication model is too limited for today parallel/distributed systems. We propose a modification by including into the model additional system parameters to represent middleware costs on non-contiguous data. We show in this paper our theoretical and experimental results for point-to-point communication, and explain how performance models for other communication patterns can be similarly created

关键词： Protocols Hardware Performance analysis Middleware Costs Particle measurements Software architecture Message passing Analytical models Parallel programming

来源：评论

学校读者我要写书评

暂无评论

Collage steganography

Collage Steganography

引用

international conference on Computer and Information science (ACIS)

作者： M. Shirali-Shahreza S. Shirali-Shahreza Computer Science Department Sharif University of Technology Tehran Iran Computer Engineering Department Sharif University of Technology Tehran Iran

Establishing hidden communication is an important subject of discussion that has gained increasing importance nowadays with the development of the Internet. One of the methods introduced for establishing hidden communication is steganography. Methods of steganography have been mostly applied on images while the major characteristic of these methods is the change in the structure and features of the images so as not to be identifiable by human users. However, on the other hand, many methods have been proposed for breaking and extracting information (steganalysis) for these methods. This paper presents a method for hiding information in images by changing the appearance of the picture instead of changing its features. In this method, images of a number of relevant objects are put on a scene together in a way that is not noticeable. Then, by changing the place and type of each object, information is hidden in the image because the place and type of each object indicates a special figure and, by putting the digits figures together, the information in question is hidden in the picture. Considering that in this method information has been hidden in the appearance of the picture, then by using the present methods of identification of stegano images one cannot identify the steganography images in this method or extract data from them. The proposed method has been implemented by using the Java programming language

关键词： steganography Cryptography Internet Humans Information security Data mining Computer science Layout Java Computer languages

来源：评论

学校读者我要写书评

暂无评论

Enhanced Facilitated Application Specification Techniques (eFAst)

Enhanced Facilitated Application Specification Techniques (e...

引用

international conference on Computer and Information science (ACIS)

作者： K. Dad A.N. Jamil Department of Computer Science COMSATS Institute of Information Technology Pakistan

This paper is a unique approach to customer and developer interaction and bringing in a more friendly way of communication between them to gather the requirements more efficiently. This way benefits like requirement analysis, scope of the project, objective of the project and detection of errors in the project offering the greatest potential for improving requirements quality and avoiding cost overruns in the development of software systems, both for the customer(s) and the developers. We have proposed a number of extra features for the traditional FAst (facilitated application specification techniques), providing more benefits to both the parties than it is doing now. In our approach we have defined what the facilitator (the one who is responsible for conducting meetings between the two parties i.e. the customer and the developer) should really do and specifically who should it be, more over certain terms that can come in front in FAst meetings are looked upon and that how can one be careful about them, keeping things straight and simple between both the parties. Moreover verification and validation is provided in all the early stages of the software development, being discussed in every FAst meeting and monitored by the facilitator. This paper basically shows way of improving the software quality right from the beginning of the project to the end product

关键词： Application software Teamwork Software systems programming Software quality Software engineering Computer science Information technology Cost benefit analysis Monitoring

来源：评论

学校读者我要写书评

暂无评论

DSLBench: Applying DSL in benchmark generation

ACM International Conference Proceeding Series

引用

ACM international conference Proceeding Series 2006年 183卷

作者： Bui, Ngoc Bao Jeffery, Ross Empirical Software Engineering Program National ICT Australia Ltd. School of Computer Science and Engineering University of New South Wales Australia

ISBN: (纸本)1595934235

Meeting performance requirements is a challenging software engineering problem in designing and constructing middleware based applications. Considerable efforts have been spent to build performance analysis models from the application architectural models that can be applied before the implementation phase. Accurate analysis models require realistic performance data to be populated into the performance models, which represents the performance characteristics of the middleware and the application hosted by the middleware runtime environment. Benchmark applications are usually developed to collect these performance data. However, benchmark generation for middleware-based systems is a costly and time consuming process because of the complexity of programming models and technology specific features of different types of middleware. The paper proposes an approach to automate benchmark generation processes following Model Driven Development methodology, which aims to construct deployable benchmark applications from the high-level design models. A modelling language is designed specifically for performance testing domain by using the recently released Microsoft Domain Specific Language toolkit. This approach can be integrated into Visual studio 2005 Team System as a "plug in " to model and generate load testing suites. Copyright 2006 ACM.

关键词： DSL

来源：评论

学校读者我要写书评

暂无评论

Presentation of programming domain knowledge with ontology

Presentation of programming domain knowledge with ontology

引用

1st international conference on Semantics, Knowledge and Grid, SKG 2005

作者： Su, Xiang Zhu, Guojin Liu, Xiaoli Yuan, Wenqin College of Computer Science DonghuaUniversity Shanghai 200051 China Department of Mathematics Shanghai JiaoTong University Shanghai 200240 China

ISBN: (纸本)0769525342

For students in computer science, knowledge of programming domain needs to be organized and shared efficiently. In this paper, we propose a method to present programming domain knowledge with ontology. We develop the programming knowledge domain ontology analogous to a dictionary. Therefore, the programming domain knowledge becomes machine-understandable and thus can be shared and reused among different implementations. © 2006 IEEE.

关键词： Knowledge engineering

来源：评论

学校读者我要写书评

暂无评论

The advent of the first generalpurpose computer in Iceland: Its impact on science and engineering

引用

IFIP WG9.7 1st Working conference on the History of Nordic Computing, HiNC 2003

作者： Magnússon, Magnús Computing Centre University of Iceland Iceland

ISBN: (纸本)0387241671

This paper first tells the rather unusual story of the acquisition of the first scientific computer by the University of Iceland. It then goes on to describe the efforts by the staff of the University Computing Centre to introduce key persons to the use of computers and to teach selected groups of people programming and assist them in using the computer. Finally, it lists several applications in widely different areas that ensued during the first six years of the computer's operation. © 2005 by international Federation for Information Processing. All rights reserved.

关键词： Computer programming

来源：评论

学校读者我要写书评

暂无评论

The challenges of creating open source educational software: The gild experience

The challenges of creating open source educational software:...

引用

1st international conference on Open Source Systems, OSS 2005

作者： Rigby, Peter C. Čubranić, Davor Thompson, Suzanne German, Daniel M. storey, Margaret-Anne Dept. of Computer Science Software Engineering Group University of Victoria Canada

This paper discusses Gild: An open source, Eclipse-based IDE for teaching and learning programming. Gild was designed to simplify and add pedagogical support to the Eclipse IDE to make it more appropriate for novice programmers and their instructors. Its development has greatly benefited from the ability to study, reuse, and modify existing Eclipse code. The core members of the Gild team are primarily researchers, making the maintenance of a growing code base difficult. It is challenging to create a community of developers because unlike most open source projects the developers (researchers) of Gild are not the main users (novice programmers) of Gild. To overcome this problem, we discuss techniques for making Gild more attractive to skilled developers (professors and graduate students). These techniques include improving instructor support in Gild and developing a grading perspective. We hope that these additions will attract able contributors and make Gild a self-sustaining community.

关键词： Grading

来源：评论

学校读者我要写书评

暂无评论

Towards formal specification and generation of autonomic policies

引用

EUC 2005 Workshops: 2nd international Symposium on Ubiquitous Intelligence and Smart Worlds, UISW 2005, IFIP international Symposium on Network-Centric Ubiquitous Systems, NCUS 2005, 1st international Workshop on Security in Ubiquitous Computing Systems, SecUbiq 2005, 1st international Workshop on RFID and Ubiquitous Sensor Networks, USN 2005 and international Workshop on Trusted and Autonomic Ubiquitous and Embedded Systems, TAUES 2005 held in conjunction with the IFIP international conference on Embedded and Ubiquitous Computing, 2005

作者： sterritt, Roy Hinchey, Michael G. Rash, James L. Truszkowski, Walt Rouff, Christopher A. Gracanin, Denis University of Ulster Ireland NASA Software Engineering Laboratory NASA Goddard Space Flight Center GreenbeltMD20771 United States Advanced Architectures and Automation Branch NASA Goddard Space Flight Center GreenbeltMD20771 United States Advanced Concepts Business Unit Science Applications International Corp McLeanVA22102 United States Virginia Tech Department of Computer Science BlacksburgVA United States

ISBN: (纸本)3540308032

Autonomic Computing (AC), self-management based on high level guidance from humans, is increasingly gaining momentum as the way forward in designing reliable systems to hide complexity and conquer IT management costs. Effectively, AC may be viewed as Policy-Based Self-Management. In this paper we look at the motivation for utilizing NASA requirements-based programming technologies for mechanically transforming policies (expressed in restricted natural language, or appropriate graphical notations) into a provably equivalent formal model that can be used as the basis for code generation and other transformations, with the goal of self-generation of provable autonomic policies. © IFIP international Federation for Information Processing 2005.

关键词： Formal specification

来源：评论

学校读者我要写书评

暂无评论

An effective and dynamically extensible DRM web platform

引用

1st international conference on High Performance Computing and Communcations, HPCC 2005

作者： Frattolillo, Franco D'Onofrio, Salvatore Research Centre on Software Technology Department of Engineering University of Sannio Italy

ISBN: (纸本)3540290311

The digital rights management platforms (DRMps) are the web platforms employed by web content providers (CPs) to ensure the copyright protection of the digital contents they distribute on the Internet. However, the current DRMps that employ watermarking technologies to protect multimedia digital contents implement "centralized" service models in which the protection process is directly implemented by the managers of the DRMps, i.e. CPs, which are also the copyright owners. This has given rise to documented problems that nowadays affect the DRMps and make their use difficult in a web context. This paper presents a DRMp characterized by a distributed architecture that enables CPs to exploit copyright protection services supplied by web service providers (SPs) according to protection processes controlled by trusted third parties (TTPs). The proposed approach exploits web-oriented programming technologies to enable CPs and SPs to dynamically cooperate in the protection process without imposing a tight coupling among them. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Websites

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：