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2007

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Articles 571 - 600 of 1355

Full-Text Articles in Computer Sciences

Using Sawsdl For Semantic Service Interoperability, Kunal Verma, Amit P. Sheth May 2007

Using Sawsdl For Semantic Service Interoperability, Kunal Verma, Amit P. Sheth

Kno.e.sis Publications

No abstract provided.

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Make The Most Of Your Time: How Should The Analyst Work With Automated Traceability Tools?, Alex Dekhtyar, Jane Huffman Hayes, Jody Larsen May 2007

Make The Most Of Your Time: How Should The Analyst Work With Automated Traceability Tools?, Alex Dekhtyar, Jane Huffman Hayes, Jody Larsen

Computer Science and Software Engineering

Several recent studies employed traditional information retrieval (IR) methods to assist in the mapping of elements of software engineering artifacts to each other. This activity is referred to as candidate link generation because the final say in determining the final mapping belongs to the human analyst. Feedback techniques that utilize information from the analyst (on whether the candidate links are correct or not) have been shown to improve the quality of the mappings. Yet the analyst is making an investment of time in providing the feedback. This leads to the question of whether or not guidance can be provided to …

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A Leveled Examination Of Test-Driven Development Acceptance, David S. Janzen, Hossein Saiedian May 2007

A Leveled Examination Of Test-Driven Development Acceptance, David S. Janzen, Hossein Saiedian

Computer Science and Software Engineering

Test-driven development (TDD) has garnered considerable attention in professional settings and has made some inroads into software engineering and computer science education. A series of leveled experiments were conducted with students in beginning undergraduate programming courses through upper-level undergraduate, graduate, and professional training courses. This paper reports that mature programmers who try TDD are more likely to choose TDD over a similar test-last approach. Additionally this research reveals differences in programmer acceptance of TDD between beginning programmers who were reluctant to adopt TDD and more mature programmers who were more willing to adopt TDD. Attention is given to confounding factors, …

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On The Accuracy Of Decentralized Virtual Coordinate Systems In Adversarial Networks, David Zage, Cristina Nita-Rotaru May 2007

On The Accuracy Of Decentralized Virtual Coordinate Systems In Adversarial Networks, David Zage, Cristina Nita-Rotaru

Department of Computer Science Technical Reports

No abstract provided.

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Computer Modeling And Visualization Of Luminescent Crystals: The Role Of Energy Transfer And Upconversion, Christopher S. Stuetzle May 2007

Computer Modeling And Visualization Of Luminescent Crystals: The Role Of Energy Transfer And Upconversion, Christopher S. Stuetzle

Computer and Data Science Faculty Publications

No abstract provided.

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This Message Will Self-Destruct: Self-Easing Covert Communication, Mikhail J. Atallah, Mercan Topkara, Umut Topkara May 2007

This Message Will Self-Destruct: Self-Easing Covert Communication, Mikhail J. Atallah, Mercan Topkara, Umut Topkara

Department of Computer Science Technical Reports

No abstract provided.

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Semantic Annotations For Wsdl, Amit P. Sheth, Jacek Kopecky May 2007

Semantic Annotations For Wsdl, Amit P. Sheth, Jacek Kopecky

Kno.e.sis Publications

No abstract provided.

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Estimating The Cardinality Of Rdf Graph Patterns, Angela Maduko, Kemafor Anyanwu, Amit P. Sheth, Paul Schliekelman May 2007

Estimating The Cardinality Of Rdf Graph Patterns, Angela Maduko, Kemafor Anyanwu, Amit P. Sheth, Paul Schliekelman

Kno.e.sis Publications

Most RDF query languages allow for graph structure search through a conjunction of triples which is typically processed using join operations. A key factor in optimizing joins is determining the join order which depends on the expected cardinality of intermediate results. This work proposes a pattern-based summarization framework for estimating the cardinality of RDF graph patterns. We present experiments on real world and synthetic datasets which confirm the feasibility of our approach.

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Altering Document Term Vectors For Classification - Ontologies As Expectations Of Co-Occurrence, Meenakshi Nagarajan, Amit P. Sheth, Marcos Aguilera, Kimberly Keeton, Arif Merchant, Mustafa Uysal May 2007

Altering Document Term Vectors For Classification - Ontologies As Expectations Of Co-Occurrence, Meenakshi Nagarajan, Amit P. Sheth, Marcos Aguilera, Kimberly Keeton, Arif Merchant, Mustafa Uysal

Kno.e.sis Publications

In this paper we extend the state-of-the-art in utilizing background knowledge for supervised classification by exploiting the semantic relationships between terms explicated in Ontologies. Preliminary evaluations indicate that the new approach generally improves precision and recall, more so for hard to classify cases and reveals patterns indicating the usefulness of such background knowledge.

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Lighting With Sketches, Alexander Wakefield Steinberg May 2007

Lighting With Sketches, Alexander Wakefield Steinberg

Dartmouth College Undergraduate Theses

Lighting design is a fundamental aspect of computer cinematography, where it is used to support storytelling by affecting the mood, style, and believability of a scene. Traditionally, lighting has requred the tedious adjustment of large set parameters that describe complex lighting setups, including lights positions, colors, shapes, etc. This work presents an interactive user interface that facilitates lighting workflow by using a sketching paradigm for light creation. Lights are specified by a series of strokes that define various properties of illumination such as shape of the light and position of illuminated and shadowed areass. The system will them perform a …

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J2components: A Java Web Application Framework, Samuel Hughes May 2007

J2components: A Java Web Application Framework, Samuel Hughes

Computer Science Honors Theses

No abstract provided.

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The Open Archives Initiative, Michael L. Nelson May 2007

The Open Archives Initiative, Michael L. Nelson

Computer Science Presentations

PDF of a powerpoint presentation from the Open Archives Initiative DRIADE ( Digital Repository of Information and Data for Evolution) Workshop, Durham, North Carolina, May 16-17, 2007. Also available on Slideshare.

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Component Integration Metrics And Their Evaluation, Prapanna Parthasarathy May 2007

Component Integration Metrics And Their Evaluation, Prapanna Parthasarathy

Masters Theses & Specialist Projects

Software Engineering (SE) has been described as the discipline devoted to the design, development, and use of computer software, covering not only the technical aspects of building software systems, but also management issues develops highly complex software. The crisis in SE, due to the lack of well-defined formal processes, has led to poorly designed products with high maintenance costs and whose behavior becomes unpredictable. Component Based Software Engineering (CBSE) is currently a preferred approach to system design to overcome the crisis of SE, since it promotes software re-use, facilitates adaptability and faster system development. A component provides a function or …

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Semantic Web: Technologies And Applications For The Real-World, Amit P. Sheth May 2007

Semantic Web: Technologies And Applications For The Real-World, Amit P. Sheth

Kno.e.sis Publications

No abstract provided.

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Visualization Of Events In A Spatially And Multimedia Enriched Virtual Environment, Leonidas Deligiannidis, Farshad Hakimpour, Amit P. Sheth May 2007

Visualization Of Events In A Spatially And Multimedia Enriched Virtual Environment, Leonidas Deligiannidis, Farshad Hakimpour, Amit P. Sheth

Kno.e.sis Publications

Semantic Event Tracker (SET) is a highly interactive visualization tool for tracking and associating activities (events) in a spatially and Multimedia Enriched Virtual Environment. SET provides integrated views of information spaces while providing overview and detail to improve perception and evaluation of complex scenarios. We model an event as an object that describes an action and its location, time, and relations to other objects. Real world event information is extracted from Internet sources, then stored and processed using Semantic Web technologies that enable us to discover semantic associations between events. We use RDF graphs to represent semantic metadata and ontologies. …

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An Experiment In Integrating Large Biomedical Knowledge Resources With Rdf: Application To Associating Genotype And Phenotype Information, Satya S. Sahoo, Olivier Bodenreider, Kelly Zeng, Amit P. Sheth May 2007

An Experiment In Integrating Large Biomedical Knowledge Resources With Rdf: Application To Associating Genotype And Phenotype Information, Satya S. Sahoo, Olivier Bodenreider, Kelly Zeng, Amit P. Sheth

Kno.e.sis Publications

Bridging between genotype and phenotype is generally achieved through the integration of knowledge sources such as Entrez Gene (EG), Online Mendelian Inheritance in Man (OMIM) and the Gene Ontology (GO). Traditionally, such integration implies manual effort or the development of customized software. In this paper, we demonstrate how the Resource Description Framework (RDF) can be used to represent and integrate these resources and support complex queries over the unified resource. We illustrate the effectiveness of our approach by answering a real-world biomedical query linking a specific molecular function, glycosyltransferase, to the disorder congenital muscular dystrophy, which potentially forms a new …

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The Influence Of Transactive Memory On Mutual Knowledge In Virtual Teams: A Theoretical Proposal, Alanah Davis, Deepak Khazanchi May 2007

The Influence Of Transactive Memory On Mutual Knowledge In Virtual Teams: A Theoretical Proposal, Alanah Davis, Deepak Khazanchi

Information Systems and Quantitative Analysis Faculty Proceedings & Presentations

Advancements in information technologies (IT) have enabled the ability to exchange knowledge within and across organizations through virtual teams. However, the ability to effectively communicate and share knowledge in virtual settings can become a difficult task due to the complex nature of both the virtual context and the technology used to support them. This paper argues that transactive memory theory can explain how mutual knowledge enhances virtual team performance. We present a conceptual model and theoretical propositions for the study of the relationship between transactive memory and mutual knowledge in virtual teams.

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The Effects Of Pairing Participants In Facilitated Group Support Systems Sessions, John D. Murphy, Deepak Khazanchi May 2007

The Effects Of Pairing Participants In Facilitated Group Support Systems Sessions, John D. Murphy, Deepak Khazanchi

Information Systems and Quantitative Analysis Faculty Proceedings & Presentations

Group Support Systems (GSS) have been used to support facilitated ideation sessions for years and have been studied from a number of different perspectives. Throughout this time the norm for running electronic brainstorming sessions has been for participants to work on their own workstations. A review of applicable literature suggests that pairing participants at GSS workstations could result in higher quality inputs and participant satisfaction. This proposition is examined with a lab experiment to test for differences between paired and unpaired facilitated GSS sessions. The results of the experiment suggest that pairing participants does yield higher quality ideas from facilitated …

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Network Performance Monitor And Electronic Mail/Smtp Gateway For The Regis Academic Research Network, Steven F. Martin May 2007

Network Performance Monitor And Electronic Mail/Smtp Gateway For The Regis Academic Research Network, Steven F. Martin

Regis University Student Publications (comprehensive collection)

The Academic Research Network (ARN) is in need of a means of monitoring servers and other nodes on the network. That need is driven by the requirement to remotely monitor and support the sprawling network resources between campuses, provide real-time network status reports, and immediate reports of downed nodes. An additional need is electronic mail (e-mail) to serve the practicum students and administrators, but primarily to provide a mail gateway through which Internet mail can be transported in order to provide the aforementioned alerts.

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Sees - An Adaptive Multimodal User Interface For The Visually Impaired, Aparajit Saigal May 2007

Sees - An Adaptive Multimodal User Interface For The Visually Impaired, Aparajit Saigal

Computer Science and Engineering Theses - Archive

The enormous amount of electronic data present today can be a daunting task to access and process for a regular person, let alone someone with a disability. The World Wide Web and Electronic Mail have transformed the way we live. We are constantly become more dependent on this information, communication and commerce medium. The Speech Enabled Email System (SEES) is an alternate user interface that allows for the retrieval of emails and RSS feeds using speech. SEES can be accessed via a desktop application or through a telephony interface such as a regular phone-line or Voice over IP. This thesis …

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Conquer: A Peer Group-Based Incentive Model For Constraint Querying In Mobile-P2p Networks, Anirban Mondal, Sanjay Kumar Madria, Masaru Kitsuregawa May 2007

Conquer: A Peer Group-Based Incentive Model For Constraint Querying In Mobile-P2p Networks, Anirban Mondal, Sanjay Kumar Madria, Masaru Kitsuregawa

Computer Science Faculty Research & Creative Works

In mobile ad-hoc peer-to-peer (M-P2P) networks, economic models become a necessity for enticing non-cooperative mobile peers to provide service. M-P2P users may issue queries with varying constraints on query response time, data quality of results and trustworthiness of the data source. This work proposes ConQuer, which addresses constraint queries in economybased M-P2P networks. ConQuer proposes a broker-based incentive M-P2P model for handling user-defined constraint queries. It also provides incentives for MPs to form collaborative peer groups for maximizing data availability and revenues by mutually allocating and deallocating data items using a royalty-based revenue-sharing method. Such reallocations facilitate MPs in providing …

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Automatic Content Analysis Of Endoscopy Video (Endoscopic Multimedia Information System), Sae K. Hwang May 2007

Automatic Content Analysis Of Endoscopy Video (Endoscopic Multimedia Information System), Sae K. Hwang

Computer Science and Engineering Dissertations - Archive

Advances in video technology are being incorporated into today's healthcare practice. For example, various types of endoscopes are used for colonoscopy, upper gastrointestinal endoscopy, enteroscopy, bronchoscopy, cystoscopy, laparoscopy, and some minimal invasive surgeries (i.e., video endoscopic neurosurgery). These endoscopes come in various sizes, but all have a tiny video camera at the tip of the endoscopes. During an endoscopic procedure, the tiny video camera generates a video signal of the interior of the human organ, for example, the internal mucosa of the colon. The video data are displayed on a monitor for real-time analysis by the physician. Diagnosis, biopsy and …

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Information Theoretic, Probabilistic And Maximum Partial Substructure Algorithms For Discovering Graph-Based Anomalies, William Fred Eberle May 2007

Information Theoretic, Probabilistic And Maximum Partial Substructure Algorithms For Discovering Graph-Based Anomalies, William Fred Eberle

Computer Science and Engineering Dissertations - Archive

The ability to mine data represented as a graph has become important in several domains for detecting various structural patterns. One important area of data mining is anomaly detection, particularly for fraud. However, less work has been done in terms of detecting anomalies in graph-based data. While there has been some previous work that has used statistical metrics and conditional entropy measurements, the results have been limited to certain types of anomalies and specific domains. In this work we present graph-based approaches to uncovering anomalies in domains where the anomalies consist of unexpected entity/relationship alterations that closely resemble non-anomalous behavior. …

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Flash Crowd Mitigation System, Dongchul Kim May 2007

Flash Crowd Mitigation System, Dongchul Kim

Computer Science and Engineering Theses - Archive

Flash crowd means that a web server suffers a sudden surge of traffic since a large number of Internet users access the web server simultaneously. Once a flash crowd occurs in a web server, the response rate for the HTTP requests decreases rapidly, or the web server may even crash. To protect the web server from such flash crowds, in this paper, we propose the Flash Crowd Mitigation System (FCMS) which is based on the cooperation of the web servers and the redirection of the HTTP request. In FCMS, when a flash crowd is predicted by the traffic monitoring module …

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Wildcat: An Integrated Stealth Environment For Dynamic Malware Analysis, Amit Vasudevan May 2007

Wildcat: An Integrated Stealth Environment For Dynamic Malware Analysis, Amit Vasudevan

Computer Science and Engineering Dissertations - Archive

Malware -- a term that refers to viruses, trojans, worms, spyware or any form of malicious code -- is widespread today. Given the devastating effects that malware have on the computing world, detecting and countering malware is an important goal. Malware analysis is a challenging and multi-step process providing insight into malware structure and functionality, facilitating the development of an antidote. To successfully detect and counter malware, malware analysts must be able to analyze them in binary, in both a coarse- (behavioral) and fine-grained (structural) fashion. However, current research in coarse- and fine-grained code analysis (categorized into static and dynamic) …

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Heros: A Patient-Centered Goal-Directed Electronic Medical Record System For The Homeless, Kallol Silas Mahata May 2007

Heros: A Patient-Centered Goal-Directed Electronic Medical Record System For The Homeless, Kallol Silas Mahata

Computer Science and Engineering Theses - Archive

Homelessness is a growing problem in the United States. Numerous barriers keep the street homeless from obtaining healthcare. Medical Street Outreach (MSO) programs are designed to reach out to the homeless. Gathering relevant clinical information on the streets is difficult, and carrying paper records in MSO is cumbersome and inefficient. Several complex healthcare record systems have been developed for hospitals, but no such system exists for collecting health data on the streets. In this thesis, we describe a light weight Electronic Medical Record (EMR), called HEROS (Homeless Electronic RecOrd System) that we have built to address the process of healthcare …

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Medical Decision Support System Using Augmentable Guideline Engine, Adetayo Afolabi Aiyedun May 2007

Medical Decision Support System Using Augmentable Guideline Engine, Adetayo Afolabi Aiyedun

Computer Science and Engineering Theses - Archive

Increasing life expectancy accompanied by existing growth of wireless infrastructure and ubiquitous computing technologies has given healthcare providers access to vital information within their healthcare networks. Medical decision support systems (MDSS) play an increasingly important role in medical practice by assisting physicians with making clinical decisions. MDSS are interactive computer programs, which are designed to assist physicians and other health professionals with decision making. Currently, the strategies for providing MDSS has failed, in part, because they have not provided a secure, timely access to information that is current, ability to modify their knowledge base without hard coding them in their …

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Efficient Multi-View Video Coding Scheme Based On Dynamic Video Object Segmentation, Xiaohui Wei May 2007

Efficient Multi-View Video Coding Scheme Based On Dynamic Video Object Segmentation, Xiaohui Wei

Computer Science and Engineering Dissertations - Archive

Multi-view video, which simultaneously acquires multiple video sequences from multiple viewpoints or view directions, is poised to become the next generation video technology. Exploiting redundancy is the hallmark of traditional video coding but is even more essential in multi-view video coding (MVC) where the data size is extremely large. The exploitation of additional redundancies, however, incurs extra computational overhead, thereby counteracting the benefits gained from coding efficiency. This dissertation proposes an efficient MVC scheme that provides a complete encoding solution with low complexity. This includes exploitation of inter- and intra-view redundancies for achieving high coding efficiency, and exploitation of inter-view …

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Efficient Visualization Of Streaming Sensor Network Data Using Approximation Technique, Sunil Pai May 2007

Efficient Visualization Of Streaming Sensor Network Data Using Approximation Technique, Sunil Pai

Computer Science and Engineering Theses - Archive

By commanding a large number of wireless sensor nodes capable of sensing, communicating, and computing, wireless sensor networks have revealed their vast potential in a plethora of applications. However, due to the stringent resources limitations on each sensor node ranging from energy and computation to network bandwidth and storage, efficient and light weight systems must be designed in order to accommodate the resource limited environment. Furthermore, due to the potentially large number of sensor nodes deployed, the amount of sensory data gathered therein can be overwhelming for processing and visualizing in a resource limited central controller, such as mobile devices. …

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Hiearchical Overlay For Service Composition In Pervasive Environments, Aparna Kailas May 2007

Hiearchical Overlay For Service Composition In Pervasive Environments, Aparna Kailas

Computer Science and Engineering Theses - Archive

The objective of pervasive computing is to allow users to perform their tasks in a transparent way regardless of device features. Resources on devices should be exploited to provide services in order to perform user tasks. When there is no exact match for the user task in the environment, the capabilities of available devices should be combined to perform the user task. Seamless Service Composition (SeSCo) abstracts device capabilities as services and leverages existing work on graph algorithms to perform service composition. A lightweight framework, PerSON (Service Overlay Network for Pervasive Environments) was developed to provide a service overlay network …

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