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2010

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Articles 1 - 30 of 1584

Full-Text Articles in Computer Sciences

Masthead Dec 2010

Masthead

Journal of Digital Forensics, Security and Law

No abstract provided.

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On Optimizing Traffic Signal Phase Ordering In Road Networks, Jason Barnes, Vamsi Paruchuri, Sriram Chellappan Dec 2010

On Optimizing Traffic Signal Phase Ordering In Road Networks, Jason Barnes, Vamsi Paruchuri, Sriram Chellappan

Computer Science Faculty Research & Creative Works

Traffic signals are an elementary component of all urban road networks and play a critical role in controlling the flow of vehicles. However, current road transportation systems and traffic signal implementations are very inefficient. the objective of this research is to evaluate optimal phase ordering within a signal cycle to minimize the average waiting delay and thus in turn minimizing fuel consumption and greenhouse gas (GHG) emissions. through extensive simulation analysis, we show that by choosing optimal phase ordering, the stopped delay can be reduced by 40% per car at each signal resulting in a saving of up to 100 …

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Front Matter Dec 2010

Front Matter

Journal of Digital Forensics, Security and Law

No abstract provided.

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Back Matter Dec 2010

Back Matter

Journal of Digital Forensics, Security and Law

No abstract provided.

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A Tactical Information Management Middleware For Resource-Constrained Mobile P2p Networks, Bo Xu, Mark Linderman, Sanjay Madria, Ouri Wolfson Dec 2010

A Tactical Information Management Middleware For Resource-Constrained Mobile P2p Networks, Bo Xu, Mark Linderman, Sanjay Madria, Ouri Wolfson

Computer Science Faculty Research & Creative Works

In this paper we provide an architecture for Tactical Information Middleware for bandwidth constrained information management. We propose the ideas of rank-Based data dissemination, and the use of a tactical information management query language. These ideas will deal with dynamic changes in bandwidth and explore opportunistic data dissemination. Thus, will lead to a cross-layer design of a system capable of handling the dynamic data management issues relevant in many missions' critical applications. © 2010 IEEE.

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A Resource-Efficient Adaptive Caching Scheme For Mobile Ad-Hoc Networks, Dan Hirsch, Sanjay Madria Dec 2010

A Resource-Efficient Adaptive Caching Scheme For Mobile Ad-Hoc Networks, Dan Hirsch, Sanjay Madria

Computer Science Faculty Research & Creative Works

In a Mobile Ad-Hoc Network environment, wireless devices have finite resources such as memory, energy and they work within the wireless constraints such as limited bandwidth and unreliable communication. Therefore, storage space, bandwidth, and battery life must be managed effectively in order to extend the usefulness and lifespan of wireless devices and the network. Caching is one of those techniques which reduce the latency and tuning time for mobile devices in the wireless network. We propose a novel scheme that seeks to distribute the storage, bandwidth and energy burden through a resource-efficient adaptive caching scheme for mobile ad-hoc networks. Our …

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Preservd - Privacy Ensured Service Discovery In Mobile Peer-To-Peer Networks, Santhosh Muthyapu, Sanjay Kumar Madria, Mark Linderman Dec 2010

Preservd - Privacy Ensured Service Discovery In Mobile Peer-To-Peer Networks, Santhosh Muthyapu, Sanjay Kumar Madria, Mark Linderman

Computer Science Faculty Research & Creative Works

In mobile peer-to-peer networks, proposed service discovery protocols disregard the exposure of the participating peers' privacy details (privileged information). in these methods, the participating peers must provide their identities during the service discovery process to be authorized to utilize services. However, a peer may not be willing to reveal its privileged information until it identifies the service providing peer. So, these peers face a problem; should the service requesting or the service providing peer reveal the identity first. the protocol presented in [12] solves this problem to some extent and discover the services available in the service requester's vicinity in …

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Adaptive Routing Scheme For Emerging Wireless Ad Hoc Networks, Behdis Eslamnour, Sarangapani Jagannathan Dec 2010

Adaptive Routing Scheme For Emerging Wireless Ad Hoc Networks, Behdis Eslamnour, Sarangapani Jagannathan

Electrical and Computer Engineering Faculty Research & Creative Works

Node mobility causes fading wireless channels, which in turn renders topology changes in emerging wireless ad hoc networks. in this paper, on-line estimators and Markov models are utilized to estimate fading channel conditions. using the estimated channel conditions as well as queue occupancy, available energy and link delay, approximate dynamic programming (ADP) techniques are utilized to find dynamic routes, while solving discrete-time Hamilton-Jacobi-Bellman (HJB) equation forward-in-time for route cost in multichannel multi-interface networks. the performance of the proposed load balancing method in the presence of fading channels and the performance of the optimal route selection approach for multichannel multi-interface wireless …

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An Fpga-Based System For Tracking Digital Information Transmitted Via Peer-To-Peer Protocols, Karl R. Schrader, Barry E. Mullins, Gilbert L. Peterson, Robert F. Mills Dec 2010

An Fpga-Based System For Tracking Digital Information Transmitted Via Peer-To-Peer Protocols, Karl R. Schrader, Barry E. Mullins, Gilbert L. Peterson, Robert F. Mills

Faculty Publications

This paper presents a Field Programmable Gate Array (FPGA)-based tool designed to process file transfers using the BitTorrent Peer-to-Peer (P2P) protocol and VoIP phone calls made using the Session Initiation Protocol (SIP). The tool searches selected control messages in real time and compares the unique identifier of the shared file or phone number against a list of known contraband files or phone numbers. Results show the FPGA tool processes P2P packets of interest 92% faster than a software-only configuration and is 97.6% accurate at capturing and processing messages at a traffic load of 89.6 Mbps.

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P300-Based Bci Performance Prediction Through Examination Of Paradigm Manipulations And Principal Components Analysis., Nicholas Edward Schwartz Dec 2010

P300-Based Bci Performance Prediction Through Examination Of Paradigm Manipulations And Principal Components Analysis., Nicholas Edward Schwartz

Electronic Theses and Dissertations

Severe neuromuscular disorders can produce locked-in syndrome (LIS), a loss of nearly all voluntary muscle control. A brain-computer interface (BCI) using the P300 event-related potential provides communication that does not depend on neuromuscular activity and can be useful for those with LIS. Currently, there is no way of determining the effectiveness of P300-based BCIs without testing a person's performance multiple times. Additionally, P300 responses in BCI tasks may not resemble the typical P300 response. I sought to clarify the relationship between the P300 response and BCI task parameters and examine the possibility of a predictive relationship between traditional oddball tasks …

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Home Automation Proposal, Paul Parham, Nathan James, Bonnie Bachman Dec 2010

Home Automation Proposal, Paul Parham, Nathan James, Bonnie Bachman

Business and Information Technology Faculty Research & Creative Works

1.1 Objectives The objective for Phase 2 of the Motorola project is to propose a comprehensive home automation system that can be launched in the next one to two years. Currently, there are many entertainment, security, and home control devices on the market but no device that ties these systems together for consumers. The goal is to develop a system that can be easily installed, cost efficient, and able to provide genuine home automation to consumers.

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A Note On Solid Coloring Of Pure Simplicial Complexes, Joseph O'Rourke Dec 2010

A Note On Solid Coloring Of Pure Simplicial Complexes, Joseph O'Rourke

Computer Science: Faculty Publications

We establish a simple generalization of a known result in the plane. The simplices in any pure simplicial complex in Rd may be colored with d+1 colors so that no two simplices that share a (d-1)-facet have the same color. In R2 this says that any planar map all of whose faces are triangles may be 3-colored, and in R3 it says that tetrahedra in a collection may be "solid 4-colored" so that no two glued face-to-face receive the same color.

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Distributed Grid Intelligence For Future Microgrid With Renewable Sources And Storage, Fanjun Meng, Ravi Akella, Mariesa L. Crow, Bruce Mcmillin Dec 2010

Distributed Grid Intelligence For Future Microgrid With Renewable Sources And Storage, Fanjun Meng, Ravi Akella, Mariesa L. Crow, Bruce Mcmillin

Electrical and Computer Engineering Faculty Research & Creative Works

The FREEDM microgrid is a smart grid solution with Distributed Grid Intelligence (DGI) to efficiently manage the power distribution and storage of renewable energy. within the FREEDM system, DGI applies distributed control method in a unique way to achieve feasible load balancing in microgrid by migrating power between renewable energy generation and storage at each node. This paper presents the key aspects in implementing such a scheme and outlines the preliminary results obtained by integrating the proposed methodology. the results demonstrate the potential benefits of adopting DGI control on a microgrid.

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A Reusable Persistence Framework For Replicating Empirical Studies On Data From Open Source Repositories, Scott Bong-Soo Chun Dec 2010

A Reusable Persistence Framework For Replicating Empirical Studies On Data From Open Source Repositories, Scott Bong-Soo Chun

Theses and Dissertations

Empirical research is inexact and error-prone leading researchers to agree that replication of experiments is a necessary step to validating empirical results. Unfortunately, replicating experiments requires substantial investments in manpower and time. These resource requirements can be reduced by incorporating component reuse when building tools for empirical experimentation. Bokeo is an initiative within the Sequoia Lab of the BYU Computer Science Department to develop a platform to assist in the empirical study of software engineering. The i3Persistence Framework is a component of Bokeo which enables researchers to easily build and rapidly deploy tools for empirical experiments by providing an easy-to-use …

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Capture And Access Of Multiple Screen Presentations, Kelv H. Cutler Dec 2010

Capture And Access Of Multiple Screen Presentations, Kelv H. Cutler

Theses and Dissertations

Knowledge transferred during meetings is often ephemeral in nature and thus must be captured if it is to be retained. Ideally, a capture solution should be able to 1) accommodate any number of screens without sacrificing image quality and 2) allow dynamic access to a complete media capture while the capture is taking place. Both students and employees can benefit from the information captured during the lectures and meetings for enhanced discussion and afterward for knowledge retention. Current systems do not support multiple screen capture well, and no system supports dynamic access to the active meeting capture during the meeting. …

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Evaluation Real-Time Data Warehousing Challenges From A Theoretical And Practical Perspective, Dale Hargens Dec 2010

Evaluation Real-Time Data Warehousing Challenges From A Theoretical And Practical Perspective, Dale Hargens

Regis University Student Publications (comprehensive collection)

The concept of real-time data warehousing has grown in popularity in recent years as organizations demand access to critical pieces of data in real-time to produce analytics and make business decisions to gain competitive advantage. Real-time data warehousing systems differ substantially from traditional data warehousing systems, thus, presenting a unique set of organizational and operational challenges. The basis for the research was to investigate whether adequate information is available regarding the organizational and operational challenges of real-time data warehousing and whether that information is available to the database community. This exploration was done by gathering primary research, conducting a case …

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Caesked: A Class Scheduler For Wmu Students, Chris Fruin, Jerry Grochowski Dec 2010

Caesked: A Class Scheduler For Wmu Students, Chris Fruin, Jerry Grochowski

Computer Science Senior Projects

Scheduling classes is a tedious process for WMU students. CAESked, a class scheduling web application, was created to ease this process. The programming languages PHP and JavaScript were used to build a solution which integrates WMU data for upcoming courses into a web application. With features including a weekly calendar, a campus map, and class information all in one place, CAESked provides students with an easy to use tool for adding classes to their schedule.

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Representation And Validation Of Domain And Range Restrictions In A Relational Database-Driven Ontology Maintenance System, Patrick G. Edgett, Leong Lee, Jennifer L. Leopold, Alton B. Coalter Dec 2010

Representation And Validation Of Domain And Range Restrictions In A Relational Database-Driven Ontology Maintenance System, Patrick G. Edgett, Leong Lee, Jennifer L. Leopold, Alton B. Coalter

Computer Science Faculty Research & Creative Works

An ontology can be used to represent and organize the objects, properties, events, processes, and relations that embody an area of reality [1]. These knowledge bases may be created manually (by individuals or groups), and/or automatically using software tools, such as those developed for information retrieval and data mining. Recently the National Science Foundation funded a large collaborative development project for the semi-automated construction of an ontology of amphibian anatomy (AmphibAnat [2]). to satisfy the extensive community curation requirements of that project, a generic, Web-Based, multi-user, relational database ontology management system (RDBOM [3]) was constructed, based upon a novel theoretical …

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Testing Embedded System Applications, Tingting Yu Dec 2010

Testing Embedded System Applications, Tingting Yu

School of Computing: Dissertations, Theses, and Student Research

Embedded systems are becoming increasingly ubiquitous, controlling a wide variety of popular and safety-critical devices. Testing is the most commonly used method for validating software systems, and effective testing techniques could be helpful for improving the dependability of these systems. However, there are challenges involved in developing such techniques. Embedded systems consist of layers of software – application layers utilize services provided by underlying system service and hardware support layers. A typical embedded application consists of multiple user tasks. Interactions between application layers and lower layers, and interactions between the various user tasks that are initiated by the application layer, …

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Paranets: A Parallel Network Architecture For The Future Internet, Khaled Harras, Abderrahmen Mtibaa Dec 2010

Paranets: A Parallel Network Architecture For The Future Internet, Khaled Harras, Abderrahmen Mtibaa

Computer Science Faculty Works

The evolution of networking technologies and portable devices has led users to expect connectivity anytime and everywhere. We have reached the point of seeing networking occur underwater, via aerial devices, and across space. While researchers push the true boundaries of networking to serve a wide range of environments, there is the challenge of providing robust network connectivity beyond the boundaries of the core internet, defined by fiber optics and well-organized backbones. As the internet edges expand, the expectation is that connectivity will be as good, in terms of high bandwidth and minimal interruption, as anywhere in the core. Such an …

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Dihomotopic Deadlock Detection Via Progress Shell Decomposition, David A. Cape, Stephen C. Jackson, Bruce M. Mcmillin Dec 2010

Dihomotopic Deadlock Detection Via Progress Shell Decomposition, David A. Cape, Stephen C. Jackson, Bruce M. Mcmillin

Computer Science Faculty Research & Creative Works

The classical problem of deadlock detection for concurrent programs has traditionally been accomplished by symbolic methods or by search of a state transition system. This work examines an approach that uses geometric semantics involving the topological notion of dihomotopy to partition the state space into components, followed by search of a reduced state space. Prior work partitioned the state-space inductively. in this work, a decomposition technique motivated by recursion coupled with a search guided by the decomposition is shown to effectively reduce the size of state transition systems. the reduced state space yields asymptotic improvement in overall runtime for verification. …

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Trusted Mobile Overlays, Robert Scott Robertson Dec 2010

Trusted Mobile Overlays, Robert Scott Robertson

Theses and Dissertations

Sensitive information is increasingly moving online and as data moves further from the control of its owner, there are increased opportunities for it to fall into malicious hands. The Web is comprised of three untrusted components where there is a risk of information compromise: networks, service providers, and clients. This thesis presents Trusted Mobile Overlays: a system that leverages trusted mobile devices to protect users from these untrusted components of the Web, while minimizing deployment difficulties. It presents a high-level design of the system as well as a prototype that implements the design.

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Web-Based Ide To Create Model And Controller Components For Mvc-Based Web Applications On Cakephp, Sugiharto Widjaja Dec 2010

Web-Based Ide To Create Model And Controller Components For Mvc-Based Web Applications On Cakephp, Sugiharto Widjaja

Master's Projects

A Web-based IDE that allows users to easily manage Model and Controller components of a CakePHP web application was developed. With this IDE, users are able to manage the model and controller components without having to write very much PHP code. They are able to create new model components without having to worry about creating the database tables for the models as the IDE creates them automatically. The IDE offers a simple interface for users to edit the schema of their models. Users can add or delete data from their models without dealing with the SQL insert/delete statements. The IDE …

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Preventing Computer Identity Theft, Donald R. Mcdaniel Dec 2010

Preventing Computer Identity Theft, Donald R. Mcdaniel

Regis University Student Publications (comprehensive collection)

The arrival of the information age has created new challenges to the ability of individuals to protect the security and privacy of their personal information. One such challenge is that of identity theft, which has caused a number of hardships upon its victims. Perpetrators of this fraud may use identities of others to obtain loans, steal money, and violate the law. This paper will discuss the characteristics of the offenders and victims of identity theft. A systematic approach for preventing identity theft will also be presented with the hopes of curtailing this epidemic.

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Test-Driven Web Application Development: Increasing The Quality Of Web Development By Providing Framework With An Emphasis On Test-Driven Design And Development Methodologies, Jason Hall Dec 2010

Test-Driven Web Application Development: Increasing The Quality Of Web Development By Providing Framework With An Emphasis On Test-Driven Design And Development Methodologies, Jason Hall

Regis University Student Publications (comprehensive collection)

Web applications , especially those based on interpreted programming languages , are quickly becoming more utilized and more commonplace than traditional client applications. Despite this growth, no open solution has yet fulfilled the need of a risk-reducing development framework that supports test-driven methodologies and tools designed to coordinate the resources responsible for the most effective development of web applications based on interpreted programming languages. This research paper presents a test-driven development framework consisting of openly available components that can be used by development teams writing web applications based on interpreted programming languages based on the methodologies and tools used by …

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Asynchronous Database Drivers, Michael Adam Heath Dec 2010

Asynchronous Database Drivers, Michael Adam Heath

Theses and Dissertations

Existing database drivers use blocking socket I/O to exchange data with relational database management systems (RDBMS). To concurrently send multiple requests to a RDBMS with blocking database drivers, a separate thread must be used for each request. This approach has been used successfully for many years. However, we propose that using non-blocking socket I/O is faster and scales better under load. In this paper we introduce the Asynchronous Database Connectivity in Java (ADBCJ) framework. ADBCJ provides a common API for asynchronous RDBMS interaction. Various implementations of the ADBCJ API are used to show how utilizing non-blocking socket I/O is faster …

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Gene Network Inference And Expression Prediction Using Recurrent Neural Networks And Evolutionary Algorithms, Heather Y. Chan Dec 2010

Gene Network Inference And Expression Prediction Using Recurrent Neural Networks And Evolutionary Algorithms, Heather Y. Chan

Theses and Dissertations

We demonstrate the success of recurrent neural networks in gene network inference and expression prediction using a hybrid of particle swarm optimization and differential evolution to overcome the classic obstacle of local minima in training recurrent neural networks. We also provide an improved validation framework for the evaluation of genetic network modeling systems that will result in better generalization and long-term prediction capability. Success in the modeling of gene regulation and prediction of gene expression will lead to more rapid discovery and development of therapeutic medicine, earlier diagnosis and treatment of adverse conditions, and vast advancements in life science research.

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Automatic Media Segmentation Within Ieee 1599–2008, Antonello D'Aguanno, Luca A. Ludovico, Davide Andrea Mauro Dec 2010

Automatic Media Segmentation Within Ieee 1599–2008, Antonello D'Aguanno, Luca A. Ludovico, Davide Andrea Mauro

Computer Sciences and Electrical Engineering Faculty Research

This paper deals with the automatic extraction of synchronization data from IEEE 1599-2008, an XML-based standard aiming at a comprehensive description of music. Within such format, audio tracks and video contents related to the same music piece can be referred to the occurrence of symbolic music events. In this way, digital objects are mutually synchronized, too. The goal is to show how timing information can be easily extracted from an IEEE 1599-2008 file, converted into a suitable format, and finally employed in a multimedia editing environment in order to produce an automatic segmentation of media objects.

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Drop-In Concurrent Api Replacement For Exploration, Test, And Debug, Everett Allen Morse Dec 2010

Drop-In Concurrent Api Replacement For Exploration, Test, And Debug, Everett Allen Morse

Theses and Dissertations

Complex concurrent APIs are difficult to reason about annually due to the exponential growth in the number of feasible schedules. Testing against reference solutions of these APIs is equally difficult as reference solutions implement an unknown set of allowed behaviors, and programmers have no way to directly control schedules or API internals to expose or reproduce errors. The work in this paper mechanically generates a drop-in replacement for a concurrent API from a formal specification. The specification is a guarded command system with first-order logic that is compiled into a core calculus. The term rewriting system is connected to actual …

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Global Dimension Of Ci: Compete Or Collaborate, Arden L. Bement Jr. Dec 2010

Global Dimension Of Ci: Compete Or Collaborate, Arden L. Bement Jr.

PPRI Digital Library

No abstract provided.

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