Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Computer Sciences

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 24601 - 24630 of 27795

Full-Text Articles in Entire DC Network

An Active Learning Approach To Efficiently Ranking Retrieval Engines, Lisa A. Torrey May 2003

An Active Learning Approach To Efficiently Ranking Retrieval Engines, Lisa A. Torrey

Dartmouth College Undergraduate Theses

Evaluating retrieval systems, such as those submitted to the annual TREC competition, usually requires a large number of documents to be read and judged for relevance to query topics. Test collections are far too big to be exhaustively judged, so only a subset of documents is selected to form the judgment ``pool.'' The selection method that TREC uses produces pools that are still quite large. Research has indicated that it is possible to rank the retrieval systems correctly using substantially smaller pools. This paper introduces an active learning algorithm whose goal is to reach the correct rankings using the smallest …

Go to article

Trusted S/Mime Gateways, Mindy J. Pereira May 2003

Trusted S/Mime Gateways, Mindy J. Pereira

Dartmouth College Undergraduate Theses

The utility of Web-based email clients is clear: a user is able to access their email account from any computer anywhere at any time. However, this option is unavailable to users whose security depends on their key pair being stored either on their local computer or in their browser. Our implementation seeks to solve two problems with secure email services. The first that of mobility: users must have access to their key pairs in order to perform the necessary cryptographic operations. The second is one of transition: initially, users would not want to give up their regular email clients. Keeping …

Go to article

Genescene: Biomedical Text And Data Mining, Gondy Leroy, Hsinchun Chen, Jesse D. Martinez, Shauna Eggers, Ryan R. Falsey, Kerri L. Kislin, Zan Huang, Jiexun Li, Jie Xu, Daniel M. Mcdonald, Gavin Ng May 2003

Genescene: Biomedical Text And Data Mining, Gondy Leroy, Hsinchun Chen, Jesse D. Martinez, Shauna Eggers, Ryan R. Falsey, Kerri L. Kislin, Zan Huang, Jiexun Li, Jie Xu, Daniel M. Mcdonald, Gavin Ng

CGU Faculty Publications and Research

To access the content of digital texts efficiently, it is necessary to provide more sophisticated access than keyword based searching. GeneScene provides biomedical researchers with research findings and background relations automatically extracted from text and experimental data. These provide a more detailed overview of the information available. The extracted relations were evaluated by qualified researchers and are precise. A qualitative ongoing evaluation of the current online interface indicates that this method to search the literature is more useful and efficient than keyword based searching.

Go to article

Exception Handling For Conflict Resolution In Cross-Organizational Workflows, Zongwei Luo, Amit P. Sheth, Krzysztof Kochut, I. Budak Arpinar May 2003

Exception Handling For Conflict Resolution In Cross-Organizational Workflows, Zongwei Luo, Amit P. Sheth, Krzysztof Kochut, I. Budak Arpinar

Kno.e.sis Publications

Workflow management systems (WfMSs) are being increasingly deployed to deliver e-business transactions across organizational boundaries. To ensure a high service quality in such transactions, exception-handling schemes for conflict resolution are needed. The conflicts primarily arise due to failure of a task in workflow execution because of underlying application, or controlling WfMS component failures or insufficient user input. So far, little progress has been reported in addressing conflict resolution in cross-organizational business processes, though its importance has been recognized. In this paper, we identify the exception handling techniques that support conflict resolution in cross-organizational settings. In particular, we propose a novel, …

Go to article

Dvsst: A Dynamic Voltage Scaling Algorithm For Sporadic Tasks, Ala' Adel Qadi, Steve Goddard, Shane Farritor May 2003

Dvsst: A Dynamic Voltage Scaling Algorithm For Sporadic Tasks, Ala' Adel Qadi, Steve Goddard, Shane Farritor

School of Computing: Technical Reports

Dynamic voltage scaling (DVS) algorithms save energy by scaling down the processor frequency when the processor is not fully loaded. Many algorithms have been proposed for periodic and aperiodic task models but none support the canonical sporadic task model. A DVS algorithm, called DVSST, is presented that can be used with sporadic tasks in conjunction with the preemptive EDF scheduling algorithm. The algorithm is proven to guarantee each task meets its deadline while saving the maximum amount of energy possible with processor frequency scaling when tasks execute with their worst-case execution times.
DVSST was implemented in the &#;C/OS-II real-time operating …

Go to article

Concurrently Learning Neural Nets: Encouraging Optimal Behavior In Cooperative Reinforcement Learning Systems, Nancy Fulda, Dan A. Ventura May 2003

Concurrently Learning Neural Nets: Encouraging Optimal Behavior In Cooperative Reinforcement Learning Systems, Nancy Fulda, Dan A. Ventura

Faculty Publications

Reinforcement learning agents interacting in a common environment often fail to converge to optimal system behaviors even when the individual goals of the agents are fully compatible. Claus and Boutilier have demonstrated that the use of joint action learning helps to overcome these difficulties for Q-learning systems. This paper studies an application of joint action learning to systems of neural networks. Neural networks are a desirable candidate for such augmentations for two reasons: (1) they may be able to generalize more effectively than Q-learners, and (2) the network topology used may improve the scalability of joint action learning to systems …

Go to article

A Machine Learning Approach To Detecting Attacks By Identifying Anomalies In Network Traffic, Matthew Vincent Mahoney May 2003

A Machine Learning Approach To Detecting Attacks By Identifying Anomalies In Network Traffic, Matthew Vincent Mahoney

Theses and Dissertations

The current approach to detecting novel attacks in network traffic is to model the normal frequency of session IP addresses and server port usage and to signal unusual combinations of these attributes as suspicious. We make four major contributions to the field of network anomaly detection. First, rather than just model user behavior, we also model network protocols from the data link through the application layer in order to detect attacks that exploit vulnerabilities in the implementation of these protocols. Second, we introduce a time-based model suitable for the bursty nature of network traffic: the probability of an event depends …

Go to article

Kiosk Engine: A Platform Independent Solution For Multimedia Kiosks, Manish Satish Shah May 2003

Kiosk Engine: A Platform Independent Solution For Multimedia Kiosks, Manish Satish Shah

Theses and Dissertations

In today's fast paced life saving time is the first priority of every business organization and presenting information visually is a highly desirable and the easiest way to impressively communicate to people. For that purpose, there are interactive devices called kiosks, which display multimedia data on a display and are quite often attached to other input/output hardware like keyboard, mouse, printer, etc. Most of today's kiosks are custom made and are designed for specific set of target platform. The task of creating a kiosk can turn out to be difficult and fairly time consuming. The aim of this thesis is …

Go to article

Idioms In Ovm, C. Flack, Antony L. Hosking, Jan Vitek May 2003

Idioms In Ovm, C. Flack, Antony L. Hosking, Jan Vitek

Department of Computer Science Technical Reports

No abstract provided.

Go to article

Running Linux On Back-End Computers In The Xinu Lab, Douglas E. Comer, Xuxian Jiang May 2003

Running Linux On Back-End Computers In The Xinu Lab, Douglas E. Comer, Xuxian Jiang

Department of Computer Science Technical Reports

No abstract provided.

Go to article

Migration From A Waterfall/Non Sei Cmm Compliant Process To A Rup/Sei Cmm Compliant Process, Chad Amos Chamberlin May 2003

Migration From A Waterfall/Non Sei Cmm Compliant Process To A Rup/Sei Cmm Compliant Process, Chad Amos Chamberlin

Theses and Dissertations

Software Life Cycle processes play a key role in the successful development of software products. Software processes continue to evolve as the field of software development progresses toward being a true engineering discipline. This theses has two objectives: (1) To apply software engineering knowledge gained during the pursuit of this degree toward the design and development of a complete, Software Engineering Institute (SEI) Capability Maturity Model (CMM) compliant process for the design phase of the software lifecycle. (2) To evaluate a Waterfall Lifecycle Model vs. an Iterative Lifecycle Model and compare SEI CM compliant processes to non-SEI CM compliant process …

Go to article

Extensions To Opengl For Cagd., Chunyan Ye May 2003

Extensions To Opengl For Cagd., Chunyan Ye

Electronic Theses and Dissertations

Many computer graphic API’s, including OpenGL, emphasize modeling with rectangular patches, which are especially useful in Computer Aided Geomeric Design (CAGD). However, not all shapes are rectangular; some are triangular or more complex. This paper extends the OpenGL library to support the modeling of triangular patches, Coons patches, and Box-splines patches. Compared with the triangular patch created from degenerate rectangular Bezier patch with the existing functions provided by OpenGL, the triangular Bezier patches can be used in certain design situations and allow designers to achieve high-quality results that are less CPU intense and require less storage space. The addition of …

Go to article

Implementation E-Commerce Application Using Lotus Domino, Jianrong Dai May 2003

Implementation E-Commerce Application Using Lotus Domino, Jianrong Dai

Student Work

E-commerce technologies enable enterprises to exchange information instantaneously, eliminate paperwork, and advertise their products and services to a global market. The Domino Server family, an integrated messaging and Web application software platform, is easy to build and manage integrated, collaborative solutions. In this project, I build a basic functional Domino-powered e-commerce application named E-Bookstore. The EBookstore web site contains three main components of an e-commerce web site (catalog of items, shopping cart, and checkout function), and provides a powerful search function to the customer. The unique session ID for each E-Bookstore web user is generated and stored, and is attached …

Go to article

Pair Programming To Facilitate The Training Of Newly-Hired Programmers, Mark Anthony Poff May 2003

Pair Programming To Facilitate The Training Of Newly-Hired Programmers, Mark Anthony Poff

Theses and Dissertations

Pair programming is touted by some software professionals as a style which allows developers to produce superior code in less time, and with fewer defects, than code produced by individuals. However, the acclaim for the pair methodology is not universal; some see it was a waste of effort which produces marginal improvements. Reported experiments which obtain quantitative results have typically been performed in an educational environment, and may not reflect actual workplace conditions. This thesis reports on an experiment using pair programing in an industrial setting. Its goal is to determine if this programming style can be used to increase …

Go to article

Ck Metrics For Daml Documents, S. Daniel Daugherty Ii May 2003

Ck Metrics For Daml Documents, S. Daniel Daugherty Ii

Honors Capstone Projects and Theses

No abstract provided.

Go to article

A Taxonomy Of E-Commerce Risks And Failures, Giridharan Vilangadu Vijayaraghavan May 2003

A Taxonomy Of E-Commerce Risks And Failures, Giridharan Vilangadu Vijayaraghavan

Theses and Dissertations

Imagine being asked to test an e-commerce website. If you haven't tested one before, where would you start? What experience would you draw on? Where would you look for more information? Even very experienced testers have blind spots when they try to generate test ideas for an application that they have not tested. This thesis presents a simple outline that will help you generate test ideas and limit your blind spots. The outline is the result of about 18 months of research on classifying e-commerce related failures and risks. The result has 45 top-level categories and 700+ examples of errors …

Go to article

Strategies For Testing Web Applications From The Client Side, Lawrence Thaddeus Prevatte Iii May 2003

Strategies For Testing Web Applications From The Client Side, Lawrence Thaddeus Prevatte Iii

Theses and Dissertations

This thesis is presented on the testing of computer software designed to operate over the World Wide Web. A fault model to guide Web software testing is developed, the components of Web software applications and their interfaces to each other are defined, and strategies to test Web software are discussed. The approach taken is to simplify the concepts of testing Web software to aid in a methodical treatment of the techniques required to conduct meaningful tests using a minimum amount of testing resources, conducting the tests from the client side of the Web application during the “ready for users” or …

Go to article

Design And Implementation Of Exception Handling With Zero Overhead In Functional Languages, Ramon Zatarain Cabada May 2003

Design And Implementation Of Exception Handling With Zero Overhead In Functional Languages, Ramon Zatarain Cabada

Theses and Dissertations

This dissertation considers the implementation of exception handling specifically for functional languages. Some implementations incur overhead for using exception handling even when no exceptions are raised. We show the results of some experiments with the SML of New Jersey and OCAML compilers, two well-known compilers for functional languages. Imperative languages avoid this overhead by using tables, but the approach does not easily transfer to compilers using continuation passing style (CPS). This dissertation proposes an approach that works with CPS compilers like SML of New Jersey. We first present an experiment where programs in SML are written with and without exception …

Go to article

On The Strategy Of Supply Hubs For Cost Reduction And Responsiveness, Earl Barnes, Jim Dai, Shijie Deng, Doug Down, Mark Goh, Hoong Chuin Lau, Sharafali Moosa May 2003

On The Strategy Of Supply Hubs For Cost Reduction And Responsiveness, Earl Barnes, Jim Dai, Shijie Deng, Doug Down, Mark Goh, Hoong Chuin Lau, Sharafali Moosa

Research Collection School Of Computing and Information Systems

A supply hub is a location generally close to a manufacturer’s facility where all or some of its supplies are warehoused with the agreement that the materials will be paid for only when consumed. Supply hub is an innovative strategy employed by especially the electronics industry to achieve cost reduction and improved responsiveness. After first tracing the developments leading to the establishment of supply hubs, the paper then describes the dynamics of the operation of supply hubs. Case examples are provided to highlight the current practices. Finally, some research issues are identified.

Go to article

Enabling Remote Access To Personal Electronic Medical Records, James K. Archibald, Eric S. Hall, Charles D. Knutson, David K. Vawdrey May 2003

Enabling Remote Access To Personal Electronic Medical Records, James K. Archibald, Eric S. Hall, Charles D. Knutson, David K. Vawdrey

Faculty Publications

Millions of people suffer from medical conditions that should be made known to healthcare practitioners prior to treatment. Paramedics and emergency room doctors cannot provide optimal care without sufficient knowledge of a patient’s medical history. Lacking patient information such as allergies, current prescriptions, and preexisting conditions, medical professionals are often forced to either delay treatment or rely on instincts. Medical mistakes in situations like these kill thousands of people and cost an estimated US$37 billion each year in the United States [1]. With the advent of electronic medical records (EMRs), patient information can be stored in computer databases at hospitals …

Go to article

Secure The Image-Based Simulated Telesurgery System, Yanjiang Yang, Zhenlan Wang, Feng Bao, Robert H. Deng May 2003

Secure The Image-Based Simulated Telesurgery System, Yanjiang Yang, Zhenlan Wang, Feng Bao, Robert H. Deng

Research Collection School Of Computing and Information Systems

Telemedicine services involve transmission of patient data over open computer network, and thus confront serious security challenges when the consequences are a matter of life and death. In this paper, we introduce an image-based simulated system for kyphoplasty telesurgery, wherein special attention is given to the fine-grained security implementation issues. Various security requirements are formalized and corresponding solutions are presented. Consequently, we implement the system to work in a secure way, while taking efficiency as a premier consideration.

Go to article

Tactics-Based Remote Execution For Mobile Computing, Rajesh Krishna Balan, Mahadev Satayanarayana, Soyoung Park, Tadashi Okoshi May 2003

Tactics-Based Remote Execution For Mobile Computing, Rajesh Krishna Balan, Mahadev Satayanarayana, Soyoung Park, Tadashi Okoshi

Research Collection School Of Computing and Information Systems

Remote execution can transform the puniest mobile device into a computing giant able to run resource-intensive applications such as natural language translation, speech recognition, face recognition, and augmented reality. However, easily partitioning these applications for remote execution while retaining application-specific information has proven to be a difficult challenge. In this paper, we show that automated dynamic repartitioning of mobile applications can be reconciled with the need to exploit application-specific knowledge. We show that the useful knowledge about an application relevant to remote execution can be captured in a compact declarative form calledtactics. Tactics capture the full range of meaningful partitions …

Go to article

Model-Based Human-Centered Task Automation: A Case Study In Acc System Design, Michael A. Goodrich, Erwin R. Boer May 2003

Model-Based Human-Centered Task Automation: A Case Study In Acc System Design, Michael A. Goodrich, Erwin R. Boer

Faculty Publications

Engineers, business managers, and governments are increasingly aware of the importance and difficulty of integrating technology and humans. The presence of technology can enhance human comfort, efficiency, and safety, but the absence of human factors analysis can lead to uncomfortable, inefficient, and unsafe systems. Systematic human-centered design requires a basic understanding of how humans generate and manage tasks. A very useful model of human behavior generation can be obtained by recognizing the task-specific role of mental models in not only guiding execution of skills but also managing initiation and termination of these skills. By identifying the human operator’s mental models …

Go to article

Using Contaminated Garbage Collection And Reference Counting Garbage Collection To Provide Automatic Storage Reclamation For Real-Time Systems, Matthew P. Hampton Apr 2003

Using Contaminated Garbage Collection And Reference Counting Garbage Collection To Provide Automatic Storage Reclamation For Real-Time Systems, Matthew P. Hampton

All Computer Science and Engineering Research

Language support of dynamic storage management simplifies the application programming task immensely. As a result, dynamic storage allocation and garbage collection have become common in general purpose computing. Garbage collection research has led to the development of algorithms for locating program memory that is no longer in use and returning the unused memory to the run-time system for late use by the program. While many programming languages have adopted automatic memory reclamation features, this has not been the trend in Real-Time systems. Many garbage collection methods involve some form of marking the objects in memory. This marking requires time proportional …

Go to article

Dynamic Assignment Of Scoped Memory Regions In The Translation Of Java To Real-Time Java, Morgan G. Deters Apr 2003

Dynamic Assignment Of Scoped Memory Regions In The Translation Of Java To Real-Time Java, Morgan G. Deters

All Computer Science and Engineering Research

Advances in middleware, operating systems, and popular, general-purpose languages have brought the ideal of reasonably-bound execution time closer to developers who need such assurances for real-time and embedded systems applications. Extensions to the Java libraries and virtual machine have been proposed in a real-time Java standard, which provides for specification of release times, execution costs, and deadlines for a restricted class of threads. To use such features, the programmer is required to use unwieldy code constructs to create region-like areas of storage, associate them with execution scopes, and allocate objects from them. Further, the developer must ensure that they do …

Go to article

Multiflow Tcp, Udp, Ip, And Atm Traffic Generation Module, Eliot I. Sinclair, John W. Lockwood Apr 2003

Multiflow Tcp, Udp, Ip, And Atm Traffic Generation Module, Eliot I. Sinclair, John W. Lockwood

All Computer Science and Engineering Research

Networking devices must be capable of processing traffic flows from multiple sources. In order to verify that such devices operates properly, a network testbench can be used to inject traffic into the device. The specification of the traffic flows can be difficult. At the low level, there are header fields, data checksums, and packet length fields that all must be formatted correctly. Further, there can be multiple flows of traffic that will arrive simultaneously. It is desirable to specify traffic at a high level of abstraction. A software program can then be written to parse the specification and generate the …

Go to article

Protecting Sensitive Credential Content During Trust Negotiation, Ryan D. Jarvis Apr 2003

Protecting Sensitive Credential Content During Trust Negotiation, Ryan D. Jarvis

Theses and Dissertations

Keeping sensitive information private in a public world is a common concern to users of digital credentials. A digital credential may contain sensitive attributes certifying characteristics about its owner. X.509v3, the most widely used certificate standard, includes support for certificate extensions that make it possible to bind multiple attributes to a public key contained in the certificate. This feature, although convenient, potentially exploits the certificate holder's private information contained in the certificate. There are currently no privacy considerations in place to protect the disclosure of attributes in a certificate. This thesis focuses on protecting sensitive credential content during trust negotiation …

Go to article

A Thesis On A 3d Input Device For Sketching Characters, Mark A. Schroering Apr 2003

A Thesis On A 3d Input Device For Sketching Characters, Mark A. Schroering

All Computer Science and Engineering Research

The goal of this project is to develop a 3D input device using a stiff piece of paper and a camera. The camera tracks the piece of paper in 3D space. The user orients the paper in 3D space and then draws on the paper using a pen-like device. The camera tracks the movement of the pen on the piece of paper. The location of the pen in 3D space can then be calculated from the orientation of the paper. A drawing application that uses this 3D input device was also developed. The application allows a user to make characters …

Go to article

Search And Recovery Of The Space Shuttle Columbia: A Geospatial 1st Responder Perspective, Jeffrey M. Williams Apr 2003

Search And Recovery Of The Space Shuttle Columbia: A Geospatial 1st Responder Perspective, Jeffrey M. Williams

Faculty Publications

A first person account of the Texas geospatial volunteers and their efforts to recover the remains of the Space Shuttle Columbia and her crew lost over eastern Texas and western Louisiana on February 1st, 2003.

Go to article

Icodes: A Ship Load-Planning System, Stephen Goodman, Jens G. Pohl Apr 2003

Icodes: A Ship Load-Planning System, Stephen Goodman, Jens G. Pohl

Collaborative Agent Design (CAD) Research Center

The Integrated Computerized Deployment System (ICODES) is a logistic software application of ship load-planning tools that utilizes intelligent software agents in a human-computer collaborative mode. As an example of a new generation of ‘information-centric’ military decision-support systems, ICODES includes expert agents with automatic reasoning and analysis capabilities. This is made possible by an internal virtual representation of the load-planning environment, in terms of ship and cargo characteristics and the complex relationships that constitute the context within which load-planning operations are performed. ICODES agents monitor the principal determinants of cargo stowage, including: the placement and segregation requirements for hazardous cargo items; …

Go to article

First Prev Next Last