Computer Sciences Commons^™

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 18, Number 5, February 2002, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

An eight page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

Web Spoofing Revisited: Ssl And Beyond, Eileen Zishuang Ye, Yougu Yuan, Sean Smith

Computer Science Technical Reports

Can users believe what their browsers tell them? Even sophisticated Web users decide whether or not to trust a server based on browser cues such as location bar information, SSL icons, SSL warnings, certificate information, and response time. In their seminal work on Web spoofing, Felten et al showed how, in 1996, a malicious server could forge some of these cues. However, this work used genuine SSL sessions, and Web technology has evolved much since 1996. The Web has since become the pre-eminent medium for electronic service delivery to remote users, and the security of many commerce, government, and academic …

Process Composition: Quality Of Service Specification, Semantics And Adaptation, Jorge Cardoso, Amit P. Sheth

Kno.e.sis Publications

No abstract provided.

Deriving Analytic Brdfs Of Metallic Rough Surfaces, Yinlong Sun

Department of Computer Science Technical Reports

No abstract provided.

Search And Discovery In Digital Video Libraries, Walid G. Aref, A. Catlin, Ahmed K. Elmagarmid, J. Fan, M. Hammad, M. Marzouk, X. Zhu

Department of Computer Science Technical Reports

No abstract provided.

Computational Models For Mechanical Deformation Of Soft Tissues Of The Central Nervous System, Huiying Xu, Steven Teoh, Yinlong Sun

Department of Computer Science Technical Reports

No abstract provided.

Experimenting With Server-Aided Signatures, Xuhua Ding, D. Mozzacchi, Gene Tsudik

Research Collection School Of Computing and Information Systems

This paper explores practical and conceptual implications of using Server-Aided Signatures (SAS). SAS is a signature method that relies on partiallytrusted servers for generating public key signatures for regular users. Besides its two primary goals of 1) aiding small, resource-limited devices in computing heavy-weight (normally expensive) digital signatures and 2) fast certificate revocation, SAS also o#ers signature causality and has some interesting features such as built-in attack detection for users and DoS resistance for servers.

Coordination Using Logical Operators In Linda, James Kendall Snyder

Theses and Dissertations

During the past 20 years, research in coordination has had success in demonstrating that distributed systems are made of two distinct parts: computation and coordination. One of the models that has contributed to the success of coordination is LINDA. While it is an extremely powerful coordination model, LINDA has limitations expressing parallel access to tuple spaces. This thesis proposes an extension to LINDA called LOGOP LINDA which combines tuple spaces using logical operators and thus enabling a single primitive to access multiple tuple spaces in parallel. Essentially this concept replaces serial access to multiple tuple spaces using the same primitive, …

Smil Vs Mpeg-4 Bifs, Lai-Tee Cheok, Alexandros Eleftheriadis

Research Collection School Of Computing and Information Systems

We present the results of a comparative analysis between the Synchronized Multimedia Integration Language (SMIL) and MPEG-4 BInary Format for Scenes (BIFS). SMIL is a language developed by the W3C consortium for expressing media synchronization among objects of various media types. MPEG-4 BIFS is the scene description scheme of MPEG-4, an international standard for communicating interactive audiovisual scenes. They are both facilities for representing and synchronizing multimedia content, and have a wide range of support for interactivity, animation and object composition features, etc. We compare their scope and purposes, the level of support for the multimedia features and investigate the …

Comparative Molecular Field Analysis (Comfa) Of Protonated Methylphenidate Phenyl-Substituted Analogs, Kathleen Mary Gilbert

Theses

Protonated methylphenidate (pMP) and several phenyl-substituted pMP analogs were analyzed using Comparative Molecular Field Analysis (CoMFA) to develop a pharmacophore for dopamine transporter (DAT) binding. This research is a part of an interdisciplinary study on using methylphenidate (MP) analogs to block the binding of cocaine to the DAT as a treatment for addiction.

A random search conformational analysis using key pMP torsional angles was performed to create conformer families representing possible bioactive conformations. The lowest energy pMP conformer of each family was used as a template to create phenyl-substituted pMP analogs.

Partial least squares analysis was used to determine the …

Simulation And Close-To-Optimal Algorithm For The Static Load Balancing Of A Network Of Heterogeneous Processors, Mark G. Steiner

Theses

A close-to-optimal linear programming-based algorithm for the static load balancing of a network of heterogeneous processors is described and implemented. Experimental results suggest that the amount of time required by the implementation of the algorithm to balance the loads of the servers as a function of the number of servers has polynomial complexity.

A Review And Assessment Of Novice Learning Tools For Problem Solving And Program Development, Christopher John Bladek

Theses

There is a great demand for the development of novice learning tools to supplement classroom instruction in the areas of problem solving and program development. Research in the area of pedagogy, the psychology of programming, human-computer interaction, and cognition have provided valuable input to the development of new methodologies, paradigms, programming languages, and novice learning tools to answer this demand.

Based on the cognitive needs of novices, it is possible to postulate a set of characteristics that should comprise the components an effective novice-learning tool. This thesis will discover these characteristics and provide recommendations for the development of new learning …

A Tool For Phylogenetic Data Cleaning And Searching, Viswanath Neelavalli

Theses

Data collection and cleaning is a very important part of an elaborate Data Mining System. 'TreeBASE' is a relational database of phylogenetic information at the Harvard University with a keyword based searching interface. 'TreeSearch' is a Structure based search engine implemented at NJIT that can be used for searching phylogenetic data. Phylogenetic trees are extracted from the flat-file database at Harvard University, available at {ftp://herbaria.harvard.edu/pub/piel/Data/files/}. There is huge amount of information present in the files about the trees and the data matrices from which the trees are generated. The search tool implemented at NJIT is interested in using the string …

Future Directions For Mobile-Agent Research, David Kotz, Robert Gray, Daniela Rus

Computer Science Technical Reports

During a discussion in September 2000 the authors examined the future of research on mobile agents and mobile code. (A mobile agent is a running program that can move from host to host in network at times and to places of its own choosing.) In this paper we summarize and reflect on that discussion. It became clear that the field should shift its emphasis toward mobile code, in all its forms, rather than to continue its narrow focus on mobile agents. Furthermore, we encourage the development of modular components, so that application designers may take advantage of code mobility without …

Entailment Mesh: A Wireless Brainstorming Tool Facilitated By A Server-Side Knowledge Engine, Joel Slayton

SWITCH

In this article, the author and founder of the CADRE Media Lab at San José State University, Joel Slayton, discusses the art project, "Entailment Mesh," by Gordon Pask and Paul Pangaro. Pask being an expert in the fields of cybernetics and psychology and Pangaro learned computer science and humanities while studying at MIT. The artwork utilizes a framework for a machine conversational and learning system called DoWhatDo developed by the artists at MIT. Slayton argues that the project can be considered both an art piece and a social software that blurs boundaries between structure and process. The concept of the …

Cxquery: A Novel Xml Query Language, Peter Revesz, Yi Chen

School of Computing: Conference and Workshop Papers

XML is becoming the data exchange standard on the Internet. Previously proposed XML query languages, such as XQuery, Quilt, YALT, Lorel, and XML-QL, lack schema definition of the query result; therefore, they are limited for defining views, integrating data, updating, and further querying, all of which are often needed in e-Business applications. We propose a novel XML query language called CXQuery, which defines the schema of the query results explicitly and can easily define views, and integrate, update, and query XML data. In addition, CXQuery can express spatial and spatio-temporal queries using a constraint-based querying approach.

Tr-2002003: Univariate Polynomial Root-Finding With A Lower Computational Precision And Higher Convergence Rates, V. Y. Pan

Computer Science Technical Reports

No abstract provided.

Spreadsheet Engineering: A Research Framework, Thomas A. Grossman Jr.

Business Analytics and Information Systems

Spreadsheet engineering adapts the lessons of software engineering to spreadsheets, providing eight principles as a framework for organizing spreadsheet programming recommendations. Spreadsheets raise issues inadequately addressed by software engineering. Spreadsheets are a powerful modeling language, allowing strategic rapid model change, and enabling exploratory modeling. Spreadsheets users learn slowly with experience because they focus on the problem domain not programming. The heterogeneity of spreadsheet users requires a taxonomy to guide recommendations. Deployment of best practices is difficult and merits research.

Bringing Up Robot: Fundamental Mechanisms For Creating A Self-Motivated, Self-Organizing Architecture, Doug Blank, Deepak Kumar, Lisa Meeden

Computer Science Faculty Research and Scholarship

No abstract provided.

Distributed And Multiprocessor Scheduling, Steven J. Chapin, Jon B, Weissman

Electrical Engineering and Computer Science - All Scholarship

This chapter discusses CPU scheduling in parallel and distributed systems. CPU scheduling is part of a broader class of resource allocation problems, and is probably the most carefully studied such problem. The main motivation for multiprocessor scheduling is the desire for increased speed in the execution of a workload. Parts of the workload, called tasks, can be spread across several processors and thus be executed more quickly than on a single processor. In this chapter, we will examine techniques for providing this facility. The scheduling problem for multiprocessor systems can be generally stated as \How can we execute a set …

Buffer Overflow And Format String Overflow Vulnerabilities, Kyung-Suk Lhee, Steve J. Chapin

Electrical Engineering and Computer Science - All Scholarship

This article surveys representative techniques of exploiting buffer overflow and format string overflow vulnerabilities and their currently available defensive measures. We also describe our buffer overflow detection technique that range checks the referenced buffers at run time. We augment executable files with type information of automatic buffers (local variables and parameters of functions) and static buffers (global variables in the data/bss section), and maintain the sizes of allocated heap buffers in order to detect an actual occurrence of buffer overflow. We describe a simple implementation with which we currently protect vulnerable copy functions in the C library.

Perspectives On The Evolution Of Simulation, Richard E. Nance, Robert G. Sargent

Electrical Engineering and Computer Science - All Scholarship

Simulation is introduced in terms of its different forms and uses, but the focus on discrete event modeling for systems analysis is dominant as it has been during the evolution of the technique within operations research and the management sciences. This evolutionary trace of over almost fifty years notes the importance of bidirectional influences with computer science, probability and statistics, and mathematics. No area within the scope of operations research and the management sciences has been affected more by advances in computing technology than simulation. This assertion is affirmed in the review of progress in those technical areas that collectively …

Closed Streamlines In Flow Visualization, Thomas Wischgoll

Computer Science and Engineering Faculty Publications

Vector Fields occur in many of the problems in science and engineering. In combustion processes for instance, vector fields describe the flow of the gas. This process can be enhanced using vector field visualization techniques. Also wind tunnel experiments can be analyzed. An example is the design of an air wing. The wing can be optimized to crate a smoother flow around it. Vector field visualization methods help the engineer to detect critical features of the flow. Consequently, feature detection methods gained great importance during the last years.

Topological methods are often used to visualize vector fields because they clearly …

Benchmarking Java And .Net, J. Travis Schlist

Capstone Research Projects

No abstract provided.

From Computational Science To Internetics: Integration Of Science With Computer Science, Geoffrey C. Fox

Northeast Parallel Architecture Center

We describe how our world dominated by Science and Scientists has been changed revolutionized by technologies moving with Internet time. Computers have always been well-used tools but in the beginning only the science counted and little credit or significance was attached to any computing activities associated with scientific research. Some 20 years ago, this started to change and the area of computational science gathered support with the NSF Supercomputer centers playing a critical role. However this vision has stalled over the last 5 years with information technology increasing in importance. The Holy Grail of computational science-- scalable parallel computing-- is …

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 18, Number 4, January 2002, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

An eight page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

Filling Preposition-Based Templates To Capture Information From Medical Abstracts, Gondy Leroy, Hsinchun Chen

CGU Faculty Publications and Research

Due to the recent explosion of information in the biomedical field, it is hard for a single researcher to review the complex network involving genes, proteins, and interactions. We are currently building GeneScene, a toolkit that will assist researchers in reviewing existing literature, and report on the first phase in our development effort: extracting the relevant information from medical abstracts. We are developing a medical parser that extracts information, fills basic prepositional-based templates, and combines the templates to capture the underlying sentence logic. We tested our parser on 50 unseen abstracts and found that it extracted 246 templates with a …

Tr-2002001: Can We Optimize Toeplitz/Hankel Computations?, V. Y. Pan

Computer Science Technical Reports

No abstract provided.

Tr-2002002: Can We Optimize Toeplitz/Hankel Computations? Ii. Singular Toeplitz/Hankel-Like Case, V. Y. Pan

Computer Science Technical Reports

No abstract provided.

Tr-2002005: Towards A Theory Of Social Software, Rohit Parikh

Computer Science Technical Reports

No abstract provided.