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Articles 841 - 870 of 1345
Full-Text Articles in Computer Sciences
A Social Relation Aware Routing Protocol For Mobile Ad Hoc Networks, Jisun An, Yangwoo Ko, Dongman Lee
A Social Relation Aware Routing Protocol For Mobile Ad Hoc Networks, Jisun An, Yangwoo Ko, Dongman Lee
Research Collection School Of Computing and Information Systems
In this paper, we propose a social relation aware routing protocol for mobile ad hoc networks, which is designed for content sharing mobile social applications. Since a content can be shared by a group of users who have similar interests, the similarity of users' interests is a good metric to predict who will consume which contents. Shared interests can be exploited in routing and replication of content request and reply to achieve enhanced efficacy in content sharing. Since routing determines which content will be forwarded by whom, a route selected based on similarity of interest increases the utilization of contents …
Web Query Recommendation Via Sequential Query Prediction, Qi He, Daxin Jiang, Zhen Liao, Steven C. H. Hoi, Kuiyu Chang, Ee Peng Lim, Hang Li
Web Query Recommendation Via Sequential Query Prediction, Qi He, Daxin Jiang, Zhen Liao, Steven C. H. Hoi, Kuiyu Chang, Ee Peng Lim, Hang Li
Research Collection School Of Computing and Information Systems
Web query recommendation has long been considered a key feature of search engines. Building a good Web query recommendation system, however, is very difficult due to the fundamental challenge of predicting users' search intent, especially given the limited user context information. In this paper, we propose a novel "sequential query prediction" approach that tries to grasp a user's search intent based on his/her past query sequence and its resemblance to historical query sequence models mined from massive search engine logs. Different query sequence models were examined, including the naive variable length N-gram model, Variable Memory Markov (VMM) model, and our …
Server-Assisted Context-Dependent Pervasive Wellness Monitoring, Archan Misra, Ben Falchuk, Shoshana Loeb
Server-Assisted Context-Dependent Pervasive Wellness Monitoring, Archan Misra, Ben Falchuk, Shoshana Loeb
Research Collection School Of Computing and Information Systems
Recent research on remote health monitoring solutions has focused largely on developing context-dependent, streamprocessing capabilities on a personal mobile hub (typically, a cellphone) for energy-efficient transmission of data collected from a set of body-worn medical sensors. In this paper, we argue that commercial deployment of such pervasive wellness monitoring will require the extension of such ‘context dependency’ to the process of data collection (from the sensors to the mobile device) as well. In particular, the utilization of an individuals non-medical activity context, by the cellphone, in coordination with a backend server, is posited to be the key to supporting important …
Putting A Slug To Work, Konstantin Läufer, George K. Thiruvathukal, Ryohei Nishimura, Carlos Ramirez Martinez-Eiroa
Putting A Slug To Work, Konstantin Läufer, George K. Thiruvathukal, Ryohei Nishimura, Carlos Ramirez Martinez-Eiroa
Computer Science: Faculty Publications and Other Works
In this article, the authors explore various uses of inexpensive embedded Linux devices such as the Linksys NSLU2 ("slug"). Embedded computing is a topic of growing interest. Although novel architectures such as cell processors, graphics processors (GPUs), and FPGAs are growing in popularity, conventional microproessor designs such as Intel's Xscale (ARM) and Atom pack a punch in a small footprint, not to mention being widely supported by commodity operating system and development tools. We're convinced that this entire space is a tool worth keeping in the scientific programmer's and software developer's toolchests.
Charts Data Fusion: Multi-Sensor Imagery Co-Registration, Shachak Pe'eri, Yuri Rzhanov
Charts Data Fusion: Multi-Sensor Imagery Co-Registration, Shachak Pe'eri, Yuri Rzhanov
Center for Coastal and Ocean Mapping
The compact hydrographic airborne rapid total survey (CHARTS) is a USACE sensor system that includes a SHOALS-3000 (3-kHz bathymetric laser and a 20-kHz topographic laser), CASI-1500 hyperspectral scanner, and a DuncanTech (DT)- 4000 digital RGB camera. The datasets produced from each sensor in CHARTS contributes a specific aspect according to its physical capabilities and limitations. Fusion of data products from a multi-sensor collection has the potential to perform a comprehensive survey and to produce tools for geo-analysis, especially for coastal research. A basic requirement in the data fusion is the co-registration between the datasets. Data from GPS/INS was intentionally ignored …
Coastal Situational Awareness Via Nowcoast’S Web Mapping Services And Map Viewer, John G.W. Kelley, Jason Greenlaw, Micah Wengren, Sree Dadisetty
Coastal Situational Awareness Via Nowcoast’S Web Mapping Services And Map Viewer, John G.W. Kelley, Jason Greenlaw, Micah Wengren, Sree Dadisetty
Center for Coastal and Ocean Mapping
NowCOAST is a GIS-based Web mapping portal developed by the National Ocean Service’s (NOS) Coast Survey Development Laboratory that provides users with situational awareness of current and future environmental conditions for U.S. coastal areas. nowCOAST accomplishes this by integrating selected near-real-time data, satellite imagery, warnings, and forecasts of meteorological, oceanographic, and river conditions from NOAA’s Weather, Ocean, and Satellite Services, NOAA’s Research, other federal agencies, and regional ocean observing systems. nowCOAST makes the observations, imagery, warnings, and forecasts available to users via on-map display and geo-referenced hyperlinks. Coastal users can display nowCOAST products via its Web map viewer (http://nowcoast.noaa.gov) or …
Improving Travel Information Products Via Robust Estimation Techniques, David Maier, Kristin A. Tufte, Rafael J. Fernández Moctezuma
Improving Travel Information Products Via Robust Estimation Techniques, David Maier, Kristin A. Tufte, Rafael J. Fernández Moctezuma
TREC Final Reports
Traffic-monitoring systems, such as those using loop detectors, are prone to coverage gaps, arising from sensor noise, processing errors and transmission problems. Such gaps adversely affect the accuracy of Advanced Traveler Information Systems. This project will explore models based on historical data that can provide estimates to fill such gaps. We build on an initial study by Mr. Rafael J. Fernandez-Moctezuma, using both a linear model and an artificial neural network (ANN) trained on historical data to estimate values for reporting gaps. These initial models were 80% and 89% accurate, respectively, in estimating the correct speed range, and misclassifications were …
Network Security Using Self Organized Multi-Agent Swarms, Eric M. Holloway, Gary B. Lamont, Gilbert L. Peterson
Network Security Using Self Organized Multi-Agent Swarms, Eric M. Holloway, Gary B. Lamont, Gilbert L. Peterson
Faculty Publications
Computer network cyber-security is a very serious concern in many commercial, industrial, and military environments. This paper proposes a new computer network security approach defined by self organized agent swarms (SOMAS) which provides a novel computer network security management framework based upon desired overall system behaviors. The SOMAS structure evolves based upon the partially observable Markov decision process (POMDP) formal model and the more complex interactive-POMDP and decentralized-POMDP models. Example swarm specific and network based behaviors are formalized and simulated. This paper illustrates through various statistical testing techniques, the significance of this proposed SOMAS architecture.
A Dynamic Attribute-Based Data Filtering And Recovery Scheme For Web Information Processing, Amit Ahuja, Yiu-Kai D. Ng
A Dynamic Attribute-Based Data Filtering And Recovery Scheme For Web Information Processing, Amit Ahuja, Yiu-Kai D. Ng
Faculty Publications
Web data being transmitted over a network channel on the Internet with excessive amount of data causes data processing problems, which include selectively choosing useful information to be retained for various data applications. In this paper, we present an approach for filtering less-informative attribute data from a source Website. A scheme for filtering attributes, instead of tuples (records), from a Website becomes imperative, since filtering a complete tuple would lead to filtering some informative, as well as less-informative, attribute data in the tuple. Since filtered data at the source Website may be of interest to the user at the destination …
Electronic Commerce Research And Applications Ecra Co-Editors' Introduction For Volume 8, Issue 2, March - April 2009, Robert J. Kauffman, Patrick Y. K. Chau, Terry R. Payne, J. Christopher Westland
Electronic Commerce Research And Applications Ecra Co-Editors' Introduction For Volume 8, Issue 2, March - April 2009, Robert J. Kauffman, Patrick Y. K. Chau, Terry R. Payne, J. Christopher Westland
Research Collection School Of Computing and Information Systems
Many efforts are occurring around the world to improve supply chain performance to best-practice levels to improve the profitability of manufacturing and service firms. As a result, there is great interest among industry leaders and academic researchers to find ways to coordinate and streamline all of the activities in the supply procurement process as a basis for cost management, managed quality, and strategic competitiveness. With the Internet, the possibility of implementing many innovative new approaches to procurement has driven firms to want much higher performance than they currently seem to be able to achieve. Some of the innovations include dynamic …
Continuous Visible Nearest Neighbour Queries, Yunjun Gao, Baihua Zheng, Wang-Chien Lee, Gencai Chen
Continuous Visible Nearest Neighbour Queries, Yunjun Gao, Baihua Zheng, Wang-Chien Lee, Gencai Chen
Research Collection School Of Computing and Information Systems
In this paper, we identify and solve a new type of spatial queries, called continuous visible nearest neighbor (CVNN) search. Given a data set P, an obstacle set O, and a query line segment q, a CVNN query returns a set of (p, R) tuples such that p ? P is the nearest neighbor (NN) to every point r along the interval R ? q as well as p is visible to r. Note that p may be NULL, meaning that all points in P are invisible to all points in R, due to the obstruction of some obstacles in …
House Of Cards, M. Thulasidas
House Of Cards, M. Thulasidas
Research Collection School Of Computing and Information Systems
We are in dire straits - no doubt about it. Our banks and financial edifices are collapsing. Those left standing also look shaky. The financial industry as a whole is battling to survive. And, as its frontline warriors, we will bear the brunt of the blood- bath sure to ensue any minute now. A good opportunity to play solitaire?
Programmable Presence Virtualization For Next-Generation Context-Based Applications, Arup Acharya, Nilanjan Banerjee, Dipanjan Chakraborty, Koustuv Dasgupta, Archan Misra, Shachi Sharma, Xiping Wang, Charles P. Wright
Programmable Presence Virtualization For Next-Generation Context-Based Applications, Arup Acharya, Nilanjan Banerjee, Dipanjan Chakraborty, Koustuv Dasgupta, Archan Misra, Shachi Sharma, Xiping Wang, Charles P. Wright
Research Collection School Of Computing and Information Systems
Presence, broadly defined as an event publish-notification infrastructure for converged applications, has emerged as a key mechanism for collecting and disseminating context attributes for next-generation services in both enterprise and provider domains. Current presence-based solutions and products lack in the ability to a) support flexible user-defined queries over dynamic presence data and b) derive composite presence from multiple provider domains. Accordingly, current uses of context are limited to individual domains/organizations and do not provide a programmable mechanism for rapid creation of context-aware services. This paper describes a presence virtualization architecture, where a virtualized presence server receives customizable queries from multiple …
Satellite-Based Fusion Of Image/Inertial Sensors For Precise Geolocation, Neil R. Jesse
Satellite-Based Fusion Of Image/Inertial Sensors For Precise Geolocation, Neil R. Jesse
Theses and Dissertations
The ability to produce high-resolution images of the Earth’s surface from space has flourished in recent years with the continuous development and improvement of satellite-based imaging sensors. Earth-imaging satellites often rely on complex onboard navigation systems, with dependence on Global Positioning System (GPS) tracking and/or continuous post-capture georegistration, to accurately geolocate ground targets of interest to either commercial and military customers. Consequently, these satellite systems are often massive, expensive, and susceptible to poor or unavailable target tracking capabilities in GPS-denied environments. Previous research has demonstrated that a tightly-coupled image-aided inertial navigation system (INS), using existing onboard imaging sensors, can provide …
Samats: Texture Extraction Explained, Joe Hegarty, James Carswell
Samats: Texture Extraction Explained, Joe Hegarty, James Carswell
Conference papers
The creation of detailed 3D buildings models, and to a greater extent the creation of entire city models, has become an area of considerable research over the last couple of decades. The accurate modeling of buildings has LBS (Location Based Services) applications in entertainment, planning, tourism and e-commerce to name just a few. Many modeling systems deployed to date require manual correspondences to be made across the image set in order to determine the models 3D structure. This paper describes SAMATS, a Semi-Automated Modelling and Texturing System, which has the capability of producing geometrically accurate and photorealistic building models without …
Automated Virtual Machine Introspection For Host-Based Intrusion Detection, Brett A. Pagel
Automated Virtual Machine Introspection For Host-Based Intrusion Detection, Brett A. Pagel
Theses and Dissertations
This thesis examines techniques to automate configuration of an intrusion detection system utilizing hardware-assisted virtualization. These techniques are used to detect the version of a running guest operating system, automatically configure version-specific operating system information needed by the introspection library, and to locate and monitor important operating system data structures. This research simplifies introspection library configuration and is a step toward operating system independent introspection. An operating system detection algorithm and Windows virtual machine system service dispatch table monitor are implemented using the Xen hypervisor and a modified version of the XenAccess library. All detection and monitoring is implemented from …
Spa: On-Line Availability Upgrades For Parity-Based Raids Through Supplementary Parity Augmentations, Lei Tian, Hong Jiang, Dan Feng, Qiang Cao, Changsheng Xie, Qin Xin
Spa: On-Line Availability Upgrades For Parity-Based Raids Through Supplementary Parity Augmentations, Lei Tian, Hong Jiang, Dan Feng, Qiang Cao, Changsheng Xie, Qin Xin
School of Computing: Technical Reports
In this paper, we propose a simple but powerful on-line availability upgrade mechanism, Supplementary Parity Augmentations (SPA), to address the availability issue for parity-based RAID systems. The basic idea of SPA is to store and update the supplementary parity units on one or a few newly augmented spare disks for on-line RAID systems in the operational mode, thus achieving the goals of improving the reconstruction performance while tole-rating multiple disk failures and latent sector errors simultaneously. By applying the exclusive OR operations appropriately among supplementary parity, full parity and data units, SPA can reconstruct the data on the failed disks …
Simulation Scoring Systems, Raynald Bedard
Simulation Scoring Systems, Raynald Bedard
Publications
Simulation scoring systems including software, methods of use, and related methods that provide for simulating and scoring of aircraft flight and other missions, particularly where such simulating is purely electronic and particularly where such scoring is objective and particularly where such scoring has a plurality of gradations, as to distinguish a plurality of skill levels.
Semantic Integration Of Citizen Sensor Data And Multilevel Sensing: A Comprehensive Path Towards Event Monitoring And Situational Awareness, Amit P. Sheth
Kno.e.sis Publications
No abstract provided.
Development Of A Data Acquisition System For An Ecommerce Website, Paul Hughes
Development Of A Data Acquisition System For An Ecommerce Website, Paul Hughes
Regis University Student Publications (comprehensive collection)
First Stop Sports (http://www.firststopsports.com) is a small sports collectibles and memorabilia eCommerce company, specializing in NFL and NCAA collectible football helmets and other sports memorabilia. First Stop Sports current web site has shown some inadequacies and limited capabilities with historical customer ordering information capture. "They are struggling to advance business development and increase revenue.? It is the scope of this project to investigate, design, and develop a prototype data acquisition system for First Stop Sports. This prototype would only focus on one specific product line, but it would need to have the same look, feel and functionality as the existing …
An Fpga-Based System For Tracking Digital Information Transmitted Via Peer-To-Peer Protocols, Karl R. Schrader
An Fpga-Based System For Tracking Digital Information Transmitted Via Peer-To-Peer Protocols, Karl R. Schrader
Theses and Dissertations
This thesis addresses the problem of identifying and tracking digital information that is shared using peer-to-peer file transfer and Voice over IP (VoIP) protocols. The goal of the research is to develop a system for detecting and tracking the illicit dissemination of sensitive government information using file sharing applications within a target network, and tracking terrorist cells or criminal organizations that are covertly communicating using VoIP applications. A digital forensic tool is developed using an FPGA-based embedded software application. The tool is designed to process file transfers using the BitTorrent peer-to-peer protocol and VoIP phone calls made using the Session …
A Unified Approach To Gpu-Accelerated Aerial Video Enhancement Techniques, Stephen Thayn Cluff
A Unified Approach To Gpu-Accelerated Aerial Video Enhancement Techniques, Stephen Thayn Cluff
Theses and Dissertations
Video from aerial surveillance can provide a rich source of data for analysts. From the time-critical perspective of wilderness search and rescue operations, information extracted from aerial videos can mean the difference between a successful search and an unsuccessful search. When using low-cost, payload-limited mini-UAVs, as opposed to more expensive platforms, several challenges arise, including jittery video, narrow fields of view, low resolution, and limited time on screen for key features. These challenges make it difficult for analysts to extract key information in a timely manner. Traditional approaches may address some of these issues, but no existing system effectively addresses …
Crm And Spiritual Care, Gary L. James
Crm And Spiritual Care, Gary L. James
Regis University Student Publications (comprehensive collection)
The Spiritual Care Department at Senior Care Residences does not have a computer database to record the chaplain's time during residents' visits, working with volunteers, and working with current or potential donors. This poses several problems such as keeping track of visits. Tracking this information will allow the chaplain to know whom he/she has provided spiritual care. This information is also critical for the volunteers he/she works with and current and potential donors. By implementing a CRM(Customer Relationship Management) application, the chaplain will have this information to help make informed decisions, and the automated computer system will help make recommendations.
Pat: Towards Flexible Verification Under Fairness, Jun Sun, Yang Liu, Jin Song Dong, Jun Pang
Pat: Towards Flexible Verification Under Fairness, Jun Sun, Yang Liu, Jin Song Dong, Jun Pang
Research Collection School Of Computing and Information Systems
Recent development on distributed systems has shown that a variety of fairness constraints (some of which are only recently defined) play vital roles in designing self-stabilizing population protocols. Current practice of system analysis is, however, deficient under fairness. In this work, we present PAT, a toolkit for flexible and efficient system analysis under fairness. A unified algorithm is proposed to model check systems with a variety of fairness effectively in two different settings. Empirical evaluation shows that PAT complements existing model checkers in terms of fairness. We report that previously unknown bugs have been revealed using PAT against systems functioning …
Review Of Information Technology And Moral Philosophy, Keith Miller, Bethany Spielman
Review Of Information Technology And Moral Philosophy, Keith Miller, Bethany Spielman
Computer Science Faculty Works
No abstract provided.
Icodes Global Services (Gs): A Single Load-Planning Capability, Jens G. Pohl
Icodes Global Services (Gs): A Single Load-Planning Capability, Jens G. Pohl
Collaborative Agent Design (CAD) Research Center
Over the past decade the Collaborative Agent Design Research Center (CADRC) at California Polytechnic State University (Cal Poly, San Luis Obispo) and its commercial arm CDM Technologies, Inc. (CDM) have developed a suite of information-centric software tools in support of military deployment and distribution processes. All of these tools feature agents that are capable of reasoning about data in the context provided by an internal information model. Together they represent an evolving suite of adaptive Knowledge Management Enterprise Services (KMES) that can be readily configured into a net-centric, Service-Oriented Architecture (SOA) based planning and decision-support toolset for a particular application …
A Life Cycle Perspective On Online Community Success, Alicia Iriberri '06, Gondy Leroy
A Life Cycle Perspective On Online Community Success, Alicia Iriberri '06, Gondy Leroy
CGU Faculty Publications and Research
Using the information systems lifecycle as a unifying framework, we review online communities research and propose a sequence for incorporating success conditions during initiation and development to increase their chances of becoming a successful community, one in which members participate actively and develop lasting relationships. Online communities evolve following distinctive lifecycle stages and recommendations for success are more or less relevant depending on the developmental stage of the online community. In addition, the goal of the online community under study determines the components to include in the development of a successful online community. Online community builders and researchers will benefit …
Extensive Phylogenetic Analysis Of A Soil Bacterial Community Illustrates Extreme Taxon Evenness And The Effects Of Amplicon Length, Degree Of Coverage, And Dna Fractionation On Classification And Ecological Parameters, Sergio E. Morales, Theodore F. Cosart, Jesse Johnson, William Holben
Extensive Phylogenetic Analysis Of A Soil Bacterial Community Illustrates Extreme Taxon Evenness And The Effects Of Amplicon Length, Degree Of Coverage, And Dna Fractionation On Classification And Ecological Parameters, Sergio E. Morales, Theodore F. Cosart, Jesse Johnson, William Holben
Computer Science Faculty Publications
To thoroughly investigate the bacterial community diversity present in a single composite sample from an agricultural soil and to examine potential biases resulting from data acquisition and analytical approaches, we examined the effects of percent G+C DNA fractionation, sequence length, and degree of coverage of bacterial diversity on several commonly used ecological parameters (species estimation, diversity indices, and evenness). We also examined variation in phylogenetic placement based on multiple commonly used approaches (ARB alignments and multiple RDP tools). The results demonstrate that this soil bacterial community is highly diverse, with 1,714 operational taxonomic units demonstrated and 3,555 estimated (based on …
Computing For Human Experience: Sensors, Perception, Semantics, Web N.0, And Beyond, Amit P. Sheth
Computing For Human Experience: Sensors, Perception, Semantics, Web N.0, And Beyond, Amit P. Sheth
Kno.e.sis Publications
Traditionally there has been a strong separation between computing and human activities in the real world. The approach has largely been that of mapping the complexity and richness of the real world to constrained computer models and languages for more efficient computation, and then transferring the results for use in the real world. I think the time is ripe to reverse the situation, for computing and communication to transparently enrich and enhance human experience. Today, devices enable something more than a 'human instructs machine' paradigm. We are seeing computing and communication engage transparently in human activities by enriching them in …
Avatars, People, And Virtual Worlds: Foundations For Research In Metaverses, Alanah Davis, John D. Murphy, Dawn Owens, Deepak Khazanchi, Ilze Zigurs
Avatars, People, And Virtual Worlds: Foundations For Research In Metaverses, Alanah Davis, John D. Murphy, Dawn Owens, Deepak Khazanchi, Ilze Zigurs
Information Systems and Quantitative Analysis Faculty Publications
Metaverses are immersive three-dimensional virtual worlds in which people interact as avatars with each other and with software agents, using the metaphor of the real world but without its physical limitations. The ubiquitous availability of high speed Internet access has spurred enormous interest in virtual worlds like Second Life and World of Warcraft, both in terms of user gaming and as a new technological platform for global virtual collaboration. These environments have potential for richer, more engaging collaboration, but their capabilities have yet to be examined in depth. Of particular interest in this paper is the use of metaverses for …