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Hierarchical encryption in WDM optical network links

Hierarchical encryption in WDM optical network links

引用

international conference on information technology: coding and computing (itcc)

作者： S.V. Kartalopoulos Williams Professor in Telecommunications Networking University of Oklahama USA

In telecommunication networks and in computer grid networks, a significant ongoing research is in a technology known as wavelength division multiplexing (WDM), which is capable to transport more than 1 Tbps aggregate traffic over a single fiber. However, when massive amounts of information are transported, as in optical networks, there are three issues that stand, cost-efficient ultra-high bandwidth delivery, security of information and data, and security of the network and of the transporting link layer. In optical networks, each fiber link consists of segments, each several kilometers long. Since a single WDM channel carries traffic, there are opportunities for sophisticated eavesdroppers to tap the fiber, copy a channel, isolate a specific payload and attempt to decrypt it if the encryption key is known or it is breakable with a fast computer. Therefore, end-to-end data security should not only rely on the client's encryption method but also on securing the transmission method on the optical link. In this paper, we present a WDM link security methodology that encrypts multiple channels and with multiple keys to render channel monitoring by eavesdroppers virtually impossible. Although our paper presents the applicability of the method on a point-to-point topology, it is applicable to a multilink and edge-to-edge network path.

关键词： Cryptography Wavelength division multiplexing WDM networks Optical fiber networks Data security Telecommunication traffic information security Computer networks Grid computing Telecommunication computing

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Analyzing relations among software patterns based on document similarity

Analyzing relations among software patterns based on documen...

引用

international conference on information technology: coding and computing (itcc)

作者： A. Kubo H. Washizaki A. Takasu Y. Fukazawa Department of Computer Science Waseda University Shinjuku Tokyo Japan National Institute of Information Chiyoda Tokyo Japan

In software development, many kinds of knowledge are shared and reused as software patterns. However, the relation analysis among software patterns by hand is difficult on the large scale. In this paper, we propose a technique for the automatic relation analysis among the patterns. Our technique is based on a new pattern model to treat various patterns, and utilizes exiting text processing techniques to extract patterns from documents and to calculate the strength of pattern relations. As a result of experiments, the system that implements our technique has extracted appropriate relations among patterns without information on relations described in original pattern documents. Moreover, our system has the ability to suggest relations among patterns that the author has not noticed.

关键词： Pattern analysis Programming Text processing Data mining Algorithm design and analysis Computer science Informatics Large-scale systems Software algorithms Data structures

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Mining p53 binding sites using profile hidden Markov model

Mining p53 binding sites using profile hidden Markov model

引用

international conference on information technology: coding and computing (itcc)

作者： J. Huang Shijun Li Department of Computer and Information Science Indiana University-Purdue University Indianapolis IN USA

Hidden Markov model has been successfully applied to bacterial gene finders and mRNA splicing modeling. Using a set of observing DNA sequences, HMM is derived for homologous search. In this paper we develop profile HMM in detecting p53, a tumor suppressor, binding sites along genes. Without assuming the constant number of nucleotides in p53 binding site, profile HMM and viterbi algorithms are designed to detect the embedded p53 binding sites from the promoter genes chosen from GenBank. The p53 regulated genes containing either single or multiple p53 binding sites distributed as clusters can be identified and classified into 7 functional groups including cell cycle regulation, DNA damage repair, signaling transduction, transcriptional factor, stress response, tumor suppressor, and oncogen.

关键词： Hidden Markov models DNA Neoplasms Microorganisms Splicing Sequences Viterbi algorithm Algorithm design and analysis Signal processing Stress

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Load-balancing strategy of multi-gateway for ad hoc Internet connectivity

Load-balancing strategy of multi-gateway for ad hoc Internet...

引用

international conference on information technology: coding and computing (itcc)

作者： J.H. Zhao X.Z. Yang H.W. Liu Department of Computer Science of Technology Harbin Institute of Technology Harbin China

Mobile ad hoc networks (MANET) are autonomous, infrastructureless networks that support multi-hop communication through IP routing. MANET and Internet have many differences. These differences are not only the structure and topology of the networks, but also communication patterns of nodes in both networks. Therefore, it is a challenging problem for MANET to access to the Internet due to these differences. There are many kinds of accessing mode such as single fix gateway or multi-gateway, where load-balancing is the most important problem. In this paper, we propose the dynamic gateway concept that acts as an interface between MANET and the Internet. These dynamic gateways can use mobile IP and DSDV protocol when they communicate with the Internet and interact with MANET, respectively. The dynamic gateway is used to solve the load-balancing problem. Several simulation experimental results in the dynamic gateway environment show that the performance of network has been improved.

关键词： Internet Mobile ad hoc networks Peer to peer computing Switches Mobile computing Mobile communication Computer science Network topology Access protocols Computer networks

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A comparative study of three moment-based shape descriptors

A comparative study of three moment-based shape descriptors

引用

international conference on information technology: coding and computing (itcc)

作者： M.E. Celebi Y.A. Aslandogan Department of Computer Science and Engineering University of Technology Arlington TX USA

Shape is one of the fundamental visual features in the content-based image retrieval (CBIR) paradigm. Numerous shape descriptors have been proposed in the literature. These can be broadly categorized as region-based and contour-based descriptors. Contour-based shape descriptors make use of only the boundary information, ignoring the shape interior content. Therefore, these descriptors cannot represent shapes for which the complete boundary information is not available. On the other hand, region-based descriptors exploit both boundary and internal pixels, and therefore are applicable to generic shapes. Among the region-based descriptors, moments have been very popular since they were first introduced in the 60's. In this paper, we study and compare three moment-based descriptors: Invariant moments, Zernike moments, and radial Chebyshev moments. Experiments on the MPEG-7 shape databases show that radial Chebyshev moments achieve the highest retrieval performance.

关键词： Chebyshev approximation Image retrieval Content based retrieval MPEG 7 Standard Image databases Spatial databases information retrieval Shape measurement Computer science Visual databases

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XML-based mobile agents

XML-based mobile agents

引用

international conference on information technology: coding and computing (itcc)

作者： R. Steele T. Dillon P. Pandya Y. Ventsov University of Technology Sydney NSW Australia

Current mobile agent systems are based on agent architectures that are partially or fully implementation programming language-specific. Mobile agent implementation in a specific programming language has usage limitations as the inter agent communication and agent migration to other agent hosts needs support for the same language. Widely used Java-based agents have an advantage of easy agent migration through bytecode transfer but this also imposes the requirement of a Java virtual machine (JVM) on each agent host where agents can migrate. To achieve a truly system independent and agent system architecture independent solution, we propose a XML-based mobile agent architecture. This paper presents a mobile agent system design based on the use of XML-based agent code, the UDDI registry for agent registration and lookup/discovery and XML Web service calls for mobile agent intercommunication and migration. This also facilitates industry to have easier and less risky adaptation from existing agent system implementation.

关键词： Mobile agents Java Mobile communication Network servers Computer architecture Distributed computing Computer networks Computer languages Virtual machining XML

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Exploring price and product information search behavior in e-market

Exploring price and product information search behavior in e...

引用

international conference on information technology: coding and computing (itcc)

作者： T. Han Department of Management Information Systems University of Nevada Las Vegas Las Vegas NV USA

Many have expected that the increased availability of price and product information over a wide range of vendors and low search costs on the Web would increase price competition, reduce price dispersion, and eventually lower the level of product price. However, recent empirical studies have shown somewhat conflicting results. Price dispersion still exists in many online industries even for commodities like books and CDs. This research explores the reason behind consumer search behavior on the Web. The results of this study show that consumers in e-market do not search for either price or product information, even with low search costs, as much as we have anticipated. The results also indicate that the traditional consumer segmentation in the physical market may not always apply in the e-market. In terms of price and product information searches, brand loyalists showed higher search activity than other e-consumer groups unlike in physical market.

关键词： Books Costs Internet Testing Management information systems Insurance Portals Search engines information technology

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A specialization in information and knowledge management systems for the undergraduate computer science curriculum

A specialization in information and knowledge management sys...

引用

international conference on information technology: coding and computing (itcc)

作者： S. Argamon N. Goharian D. Grossman O. Frieder N. Raju Department of Computer Science Illinois Institute of Technology Chicago IL USA Institute of Psychology Illinois Institute of Technology Chicago IL USA

The authors described the progress extending the undergraduate computer science (CS) curriculum to include a deep understanding of techniques for information and knowledge management systems (IKMS). In a novel five-course sequence, students build and work with techniques for data mining, information retrieval, and text analysis, and develop a large-scale IKMS project. The authors taught in a hands-on lab setting where students use tools they have built, performing experiments that could extend the field. Hence undergraduates have firsthand knowledge of performing CS research using scientific methods. Second, a rigorous set of evaluation criteria developed in the Psychology Institute was utilized to evaluate how well students learn using our approaches. Ultimately, it is believed that this specialization warrants inclusion as an option in the standard undergraduate CS curriculum.

关键词： Knowledge management Computer science Data mining information retrieval Text analysis Psychology Relational databases Natural language processing Project management Text categorization

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Secure group communication with multiplicative one-way functions

Secure group communication with multiplicative one-way funct...

引用

international conference on information technology: coding and computing (itcc)

作者： Heeyoul Kim Seong-min Hong H. Yoon J.W. Cho CS Division Korea Advanced Institute of Science and Technology South Korea

Secure group communication enables only the users in that group securely communicate with each other. Because the users can join or leave the group dynamically, scalability is a major concern. In this paper, we propose a communication-efficient model using multiplicative one-way functions. It also has well known tree-based structure but uses exclusive keys that are held by the users not in some subtree. When totally n users are in the group, proposed model reduces the size of multicast message required in join or leave operation from O(logn) to O(1) keeping other costs comparable. The security of proposed model is based on the difficulty of finding square root modulo composite number and it also satisfies both forward and backward secrecy. Therefore, proposed model is very applicable to a wide area network environment or a low-bandwidth channel such as ad hoc network.

关键词： Costs Mobile communication Computational efficiency Scalability Cryptographic protocols Cryptography information technology Wide area networks Ad hoc networks conference management

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Grid-based collaboration in interactive data language applications

Grid-based collaboration in interactive data language applic...

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international conference on information technology: coding and computing (itcc)

作者： Minjun Wang G. Fox M. Pierce EECS Department Syracuse University USA Community Grid Laboratory Indiana University Bloomington IN USA Community Grid Laboratory Computer Science Department School of Informatics and Physics Department Indiana University USA

Interactive Data Language (IDL) is an array-oriented data analysis and visualization application, which is widely used in research, commerce, and education. It is meaningful to make user IDL applications collaborative between computers over networks, using a common message broker as the underlying communication system. In order to achieve the global collaboration, we have brought together in the research a Grid-based collaboration paradigm, a shared event model, different implementing structures, methodologies and technologies. We have succeeded in our prototype codes, and we are currently working on a real life IDL application package to make it collaborative. At the same time, we are trying to find better structures and methods for the collaboration in general user IDL applications.

关键词： Collaborative work Application software international collaboration Data analysis Data visualization Business Computer science education Computer applications Computer networks Prototypes

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