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2011

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Determining A Relationship Between Design Characteristics And The End-Of-Life Disposition Of Cellular Phones, Ashley Devierno Dec 2011

Determining A Relationship Between Design Characteristics And The End-Of-Life Disposition Of Cellular Phones, Ashley Devierno

Theses

In recent years, the consumption of consumer electronics has increased rapidly in the United States and across the world. As the consumer electronics industry continues to innovate and turn over new products, older products become obsolete and enter the ever growing electronics waste stream, which was 2.3 million tons in 2007.The increasing volume of electronic waste (e-Waste) has gained the attention of consumers, media outlets, and policy makers across the world. This has put pressure on original equipment manufacturers (OEMs) of consumer electronics to manage their products in an environmentally responsible way at the end of their product lifetimes. It …

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Optofluidic Glucose Sensor Utilizing An Epoxy-Based, Transparent Dry Film Resist, Zhan Gao, Sijia Gong, Chang Soo Kim, David B. Henthorn Dec 2011

Optofluidic Glucose Sensor Utilizing An Epoxy-Based, Transparent Dry Film Resist, Zhan Gao, Sijia Gong, Chang Soo Kim, David B. Henthorn

Electrical and Computer Engineering Faculty Research & Creative Works

An enzymatic, fluorescent glucose sensor was constructed with a novel epoxy-Based, optically transparent dry film resist (PerMX 3000 series, DuPont). This material was utilized as the main active material for fluidic structure and optical interrogation. This sensor was based on the enzymatic reaction of glucose oxidase (GOD) and utilized a ruthenium complex fluorophore as the reporting agent. Both the oxygen-sensitive ruthenium complex and GOD were incorporated into poly (ethylene glycol) (PEG)-Based hydrogel materials, which were lithographically patterned and embedded inside the PerMX fluidic channel after wafer-bonding process. the optofluidic sensing platform with this embedded sensing elements exhibited a wide dynamic …

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Thermal Analysis Of Lead Zirconate Titanate Thin Films Using Digital Image Correlation., Brek J. Meuris Dec 2011

Thermal Analysis Of Lead Zirconate Titanate Thin Films Using Digital Image Correlation., Brek J. Meuris

Electronic Theses and Dissertations

Lead Zirconate Titanate (PZT), known for its ferroelectric properties, is widely used in micro-electromechanical (MEMS) and nano-electromechanical (NEMS) devices. PZT is a ceramic material that is most commonly found in its sol gel form, which allows for a relatively simple and cost-effective means of deposition and device fabrication. The material properties of PZT have been subject to significant research; however, the material properties of PZT sol gels remain largely unknown. In an effort to further understand thermal strain development, a combination of thermal loading and digital image correlation (DIC) were used to analyze the mechanical response of PZT sol gel …

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Effects Of Environmental Pollution On Endothelial Progenitor Cells And Vascular Regeneration., Laura A. Wheat Nissley 1983- Dec 2011

Effects Of Environmental Pollution On Endothelial Progenitor Cells And Vascular Regeneration., Laura A. Wheat Nissley 1983-

Electronic Theses and Dissertations

Acrolein is a common pollutant present in ambient air, automobile exhaust, and tobacco smoke. Previous studies show that exposure to acrolein increases cardiovascular disease risk. To determine whether acrolein affect cardiovascular regeneration, we investigated the cardiovascular effects of inhaled acrolein. Adult male C57BL/6 mice were exposed to room air or acrolein (O.5, 1 or 5 ppm) for and the endothelial progenitor cells (EPC) level in peripheral blood (PB) was measured by flow cytometry. To examine the proliferative capacity of EPCs, bone marrow cells (BMCs) were cultured on fibronectin-coated slides. Brief exposure to acrolein (5 ppm, 6h) or 4 day (1 …

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Metal Organic Chemical Vapor Deposition Of Ingan Alloys On Nanowire Substrates., Chandrashekhar Pendyala Dec 2011

Metal Organic Chemical Vapor Deposition Of Ingan Alloys On Nanowire Substrates., Chandrashekhar Pendyala

Electronic Theses and Dissertations

Rising environmental concerns due to our rising population ad energy demand along with our excessive dependence on fossil fuels has created an urgent need to find clean, renewable and carbon free source of energy. Photoelectrochemical (PEC) water splitting is a clean and carbon free process where hydrogen is produced from water and sunlight using a semiconductor. To date, no material has been found that meets the stringent requirements of band gap, band edge positions and stability for spontaneous water splitting. It is however possible to use two materials to meet the criteria. In this regard, InGaN alloys with indium rich …

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Hazardous Risk Management Survey And Inland Water Survey., Ayodeji Abimbola Lasisi Dec 2011

Hazardous Risk Management Survey And Inland Water Survey., Ayodeji Abimbola Lasisi

Electronic Theses and Dissertations

The trucking industry is the largest freight sector, making up about 70 percent of all domestic shipment in the United States and contributes greatly the American economy. About 10 billion tons of goods are shipped annually and of that, about 800,000 shipments of hazardous materials are transported in the United States each day by trucks, resulting in 300 million annual shipments (Federal Motor Carrier Security Administration). These hazardous materials (HazMat) range from relatively harmless products, such as hair spray and perfumes, to bulk shipments of gasoline by highway cargo tanks, to transportation of poisonous, explosive, and radioactive materials. The complexity …

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Fiscal Year 2011 Fhwa-536 Report For The Kentucky Transportation Cabinet, Steven Douglas Kreis, Candice Y. Wallace, Bryan Gibson, Sarah M. Mccormack Dec 2011

Fiscal Year 2011 Fhwa-536 Report For The Kentucky Transportation Cabinet, Steven Douglas Kreis, Candice Y. Wallace, Bryan Gibson, Sarah M. Mccormack

Kentucky Transportation Center Research Report

The Federal Highway Administration (FHWA) requires state transportation agencies to submit a biennial report on local highway finances. The purpose of these reports is to provide FHWA with the data it needs to capture the financing of highway activities at the local level. Based on this information, it can identify trends in revenue, expenditures, investments, and program development, and in turn make decisions about future investments. The report, FHWA-536, asks agencies to report on four areas of local highway finance: 1) disposition of highway-user revenues; 2) revenues used for roads and streets identified by source and funding type; 3) road …

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Evaluation Of Pre-Consolidation Stress Determination Methods, Omar Conte, Stephanie Rust, Louis Ge, Richard Wesley Stephenson Dec 2011

Evaluation Of Pre-Consolidation Stress Determination Methods, Omar Conte, Stephanie Rust, Louis Ge, Richard Wesley Stephenson

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Pre-Consolidation Pressure Provides Valuable Information About Soil Behavior And, Specifically, Settlement under an Induced Load. Soil is Expected to Have Less Settlement Before its Pre-Consolidation Pressure and Much More Settlement after that Point. the Pre-Consolidation Pressure and the Compressibility of the Soil Can Be Determined from the Results of a One-Dimensional Consolidation Test. Different Methods Have Been Developed to Obtain the Accurate Pre-Consolidation Pressure from One Dimensional Consolidation Test Data. This Paper Presents and Discusses the Results of the One-Dimensional Consolidation Test Data from an Extensive Testing Program. the Test Specimens Used Were Obtained from Multiple Borehole Locations and Were …

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Regeneration Of Carbon Aerogel Exhausted In Water Purification, Sanjay Tewari Dec 2011

Regeneration Of Carbon Aerogel Exhausted In Water Purification, Sanjay Tewari

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Carbon has been used electrochemically in various forms for water treatment and the carbon aerogel is one of them. Carbon Aerogels (CA) are used as electrodes due to their high surface capacity and high electrical conductivity. They are also known as Carbon Nanofoams (CNF). CA electrodes attract oppositely charged ions that are nearby. This concept is known as Capacitive De-Ionization (CDI). The use of CA in CDI for water purification is well documented, but not much work has been done on regeneration of CA electrodes. Once saturated, these electrodes lose their ability to adsorb additional ions and it must be …

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The Role Of Eddies Inside Pores In The Transition From Darcy To Forchheimer Flows, Kuldeep Chaudhary, M. Bayani Cardenas, Wen Deng, Philip C. Bennett Dec 2011

The Role Of Eddies Inside Pores In The Transition From Darcy To Forchheimer Flows, Kuldeep Chaudhary, M. Bayani Cardenas, Wen Deng, Philip C. Bennett

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

We studied the role of intra-pore eddies, from viscous to inertial flows, in modifying continuum-scale flow inside pores. Flow regimes spanning Reynolds Number Re ∼ 0 to 1350 are divided into three zones - one zone follows Darcy flow, and the other two zones describe non-Darcy or Forchheimer flow. During viscous flows, i.e., Re < 1, stationary eddies occupy about 1/5 of the pore volume. Eddies grow when Re > 1, and their growth leads to the deviation from Darcy's law and the emergence of Forchheimer flow manifested as a characteristic reduction in the apparent hydraulic conductivity Ka. The reduction in Ka is due to the narrowing of the flow channel which is …

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Optimal Charging Scheduling For Battery Electric Vehicles Under Smart Grid., Nur Dayana Abd Rahman Dec 2011

Optimal Charging Scheduling For Battery Electric Vehicles Under Smart Grid., Nur Dayana Abd Rahman

Electronic Theses and Dissertations

A projected high penetration of battery electric vehicles (BEV s) in the market will introduce an additional load in the electricity grid. Furthermore, uncontrolled BEV charging from residential users will exacerbate the existing peak load during evening hours. In this thesis, we propose two optimization models to alleviate the impact of extra demand from electric vehicles on the power grid. The first is a centralized charging scheduling model that coordinates the charging among BEV users under the goal of minimizing the total electricity cost for all users. The second model uses a decentralized agent-based approach to scheduling the BEV charging. …

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Functionalized Nanoparticles For Amf-Induced Gene And Drug Delivery., Souvik Biswas Dec 2011

Functionalized Nanoparticles For Amf-Induced Gene And Drug Delivery., Souvik Biswas

Electronic Theses and Dissertations

The properties and broad applications of nano-magnetic colloids have generated much interest in recent years. Specially, Fe304 nanoparticles have attracted a great deal of attention since their magnetic properties can be used for hyperthermia treatment or drug targeting. For example, enhanced levels of intracellular gene delivery can be achieved using Fe304 nano-vectors in the presence of an external magnetic field, a process known as 'magnetofection'. The low cytotoxicity, tunable particle size, ease of surface functionalization, and ability to generate thermal energy using an external alternating magnetic field (AMF) are properties have propelled Fe304 research to the forefront of nanoparticle research. …

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Design, Characterization And Testing Of A Thin-Film Microelectrode Array And Signal Conditioning Microchip For High Spatial Resolution Surface Laplacian Measurement., Huihang Dong 1980- Dec 2011

Design, Characterization And Testing Of A Thin-Film Microelectrode Array And Signal Conditioning Microchip For High Spatial Resolution Surface Laplacian Measurement., Huihang Dong 1980-

Electronic Theses and Dissertations

Cardiac mapping has become an important area of research for understanding the mechanisms responsible for cardiac arrhythmias and the associated diseases. Current technologies for measuring electrical potentials on the surface of the heart are limited due to poor spatial resolution, localization issues, signal distortion due to noise, tissue damage, etc. Therefore, the purpose of this study is to design, develop, characterize and investigate a custom-made microfabricated, polyimide-based, flexible Thin-Film MicroElectrode Array (TFMEA) that is directly interfaced to an integrated Signal Conditioning Microchip (SCM) to record cardiac surface potentials on the cellular level to obtain high spatial resolution Surface Laplacian (SL) …

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Optimization Models For Patient Allocation During A Pandemic Influenza Outbreak., Li Sun Dec 2011

Optimization Models For Patient Allocation During A Pandemic Influenza Outbreak., Li Sun

Electronic Theses and Dissertations

Pandemic influenza has been an important public health concern. During the 20th century, three major pandemics of influenza occurred in 1918, 1957, and 1968. The pandemic of 1918 caused 40 to 50 million deaths worldwide and more than 500,000 deaths in the United States. The 1957 pandemic, during a time with much less globalization than now, spread to the U.S. within 4 to 5 months of its origination in China, causing more than 70,000 deaths in the U.S., and the 1968 pandemic spread to the U.S. from Hong Kong within 2 to 3 months, causing 34,000 deaths. Pandemic influenza is …

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3d Image Reconstruction From Sparse Measurement Of Wideband Millimeter Wave Sar Experiments, Hamed Kajbaf, Joseph T. Case, Yahong Rosa Zheng Dec 2011

3d Image Reconstruction From Sparse Measurement Of Wideband Millimeter Wave Sar Experiments, Hamed Kajbaf, Joseph T. Case, Yahong Rosa Zheng

Electrical and Computer Engineering Faculty Research & Creative Works

Nonuniform random sampling is applied to a wideband 3D synthetic aperture radar (SAR) imaging system to reduce the number of measurement points in both frequency and space domains. Experimental tests were performed on a construction foam specimen using uniformly sampled Q-band frequencies in 35.04 GHz to 44.96 GHz and at a grid of two-millimeter step sizes. using discrete Fourier transform (DFT) or discrete cosine transform (DCT) sparse representations, the 3D images can be reconstructed from 7% random samples of the experimental data achieving comparable quality as the one from original full-set data. This can translate to significant time reduction of …

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Evaluation Of Long-Term Pavement Marking Performance, Eric R. Green, Kenneth R. Agent Dec 2011

Evaluation Of Long-Term Pavement Marking Performance, Eric R. Green, Kenneth R. Agent

Kentucky Transportation Center Research Report

The objective of the investigation was to evaluate the useful life of pavement markings. The Manual on Uniform Traffic Control Devices (MUTCD) provides general guidelines for the application and installation of pavement markings. However, performance requirements for various types of pavement markings are not included. Retroreflectivity data were collected throughout Kentucky on various longitudinal pavement markings using mobile and manual techniques. Data were collected on one-year, two-year and three-year-old lines. The retroreflectivity levels were analyzed and the several recommendations were made. Minimum levels of retroreflectivity should be set for determining what roads to restripe annually. These values should be lower …

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Modeling And Integration Of Demand Response And Demand Side Resources For Smart Grid Application In Distribution Systems, Naveen Venkatesan Dec 2011

Modeling And Integration Of Demand Response And Demand Side Resources For Smart Grid Application In Distribution Systems, Naveen Venkatesan

Graduate Theses, Dissertations, and Problem Reports (ETD)

Today's electric grid is undergoing drastic changes to evolve into a smart grid. Deregulation of the integrated and monopolistic power system into genco, transco and disco has led to tremendous competition among these players. These entities are in the process of developing innovative smart grid strategies that can improve their reliability and profit. In this thesis work, some of the smart grid initiatives by discos have been explored.;This thesis work is driven by two major objectives. The primary objective is to explore Demand Response (DR), develop its comprehensive model and to analyze various effects and implications of DR on distribution …

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Distributed Monte Carlo Simulation, Aruna Sri Bommagani Dec 2011

Distributed Monte Carlo Simulation, Aruna Sri Bommagani

Graduate Theses, Dissertations, and Problem Reports (ETD)

Monte Carlo simulation is an effective way to analyze models of sophisticated problems, but often suffers from high computational complexity. Distributed computing is an effective technology that can be used for compute-intensive applications, such as Monte Carlo simulation. The goal of this thesis is to combine the concepts of Monte Carlo simulation and distributed computing in an effort to develop an efficient system capable of rapidly executing computationally-demanding simulations.;When distributed computing is used to support the simulations of multiple users, a scheduling algorithm is required to allocate resources among the users' jobs. In this thesis, a scheduling algorithm is developed …

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Efficient Design Of Biological Experiments For Dose-Response Modeling In Nanomaterial Toxicology Studies, Kai Wang Dec 2011

Efficient Design Of Biological Experiments For Dose-Response Modeling In Nanomaterial Toxicology Studies, Kai Wang

Graduate Theses, Dissertations, and Problem Reports (ETD)

This thesis is concerned with developing two-stage Bayesian optimum design procedure in nanotoxicology with simulation experiments. The proposed design method adopts suitable nonlinear dose response curve and non-constant variance model in experimental modeling, which more adequately represents the desirable properties of bioassay-experiment. A multiple objective genetic algorithm were used to select best set of non-dominated experiments on Pareto front. The proposed approach has been shown to provide better design than traditional experiment method in terms of D-optimum design and A-optimum design.

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Hydroclimatic Variability In North-Central Mongolia As Inferred From Tree Rings, Caroline Leland Dec 2011

Hydroclimatic Variability In North-Central Mongolia As Inferred From Tree Rings, Caroline Leland

Graduate Theses, Dissertations, and Problem Reports (ETD)

The influence of increasing temperatures on hydrologic regimes across Mongolia is difficult to evaluate from a spatial perspective, particularly at fine resolutions. Therefore, networks of tree-ring chronologies are a valuable means of assessing regional and local variability in hydroclimate while placing recent moisture trends in a historical context. Tree-ring data are particularly useful in Mongolia, where instrumental records are spatially and temporally limited. Here, I present two chapters that are essentially related and complement one another. The first chapter seeks to identify tree-growth anomaly regions (i.e. inferred hydroclimatic regions) across north-central Mongolia based on a network of 21 tree-ring chronologies. …

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Cancer Stem Cells. From Characterization To Therapeutic Implications., Nehad M. Alajez Dec 2011

Cancer Stem Cells. From Characterization To Therapeutic Implications., Nehad M. Alajez

Saudi Medical Journal

The cancer stem cell (CSC), or alternatively referred to as the tumor initiating cell (TIC) model, proposes that human cancers are organized in a hierarchical structure with the CSC at the apex. Cancer stem cells are functionally defined by their ability to self-renew, and to recapitulate the hierarchy of the original tumor from which they were derived. Emerging data from the literature suggest that CSCs might be the fraction within the tumor that resists conventional therapies; hence, the CSC paradigm provides new insight into tumor progression and relapse. Herein, we provide literature review of the CSC model, with emphasis on …

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Genotoxicity And Cytotoxicity Of Ovine Collagen On Human Dermal Fibroblasts., Fauzi M. Busra, Shiplu R. Chowdhury, Aminuddin B. Saim, Ruszymah B. Idrus Dec 2011

Genotoxicity And Cytotoxicity Of Ovine Collagen On Human Dermal Fibroblasts., Fauzi M. Busra, Shiplu R. Chowdhury, Aminuddin B. Saim, Ruszymah B. Idrus

Saudi Medical Journal

No abstract provided.

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A Successful Multi-Institutional Blog For Transferring Garden And Landscape Information To The Public, Jeffrey Gillman, Linda Chalker-Scott, Holly Scoggins, Bert Cregg Dec 2011

A Successful Multi-Institutional Blog For Transferring Garden And Landscape Information To The Public, Jeffrey Gillman, Linda Chalker-Scott, Holly Scoggins, Bert Cregg

Journal of Extension

In July 2009 four faculty members from four different institutions created a blog to educate consumers and professionals about plant-related issues. Online resources were used to measure the number of times that the blog was viewed and its impacts. The blog averages about 200 views a day, and 80% of those responding to a survey could name specific impacts that the blog had on their gardening and landscape practices.

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Positive Examples And Lessons Learned From Rural Small Business Adoption Of E-Commerce Strategies, R David Lamie, David L. Barkley, Deborah M. Markley Dec 2011

Positive Examples And Lessons Learned From Rural Small Business Adoption Of E-Commerce Strategies, R David Lamie, David L. Barkley, Deborah M. Markley

Journal of Extension

Rural small businesses struggling against the current of competition from "big box" retailers, weak consumer demand, and on-line shopping options must find strategies that work. Many are finding that adoption of e-commerce strategies is a key to survival, even prosperity. This article highlights the lessons learned from a recent case study research project of rural businesses from across the country, sponsored by the National Extension E-Commerce Initiative. Suggestions are provided for Extension educators to use these materials to directly assist rural businesses consider thoughtful adoption of e-commerce strategies.

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A Secure And Distributed Framework To Identify And Share Needed Information, Wei Jiang, Bharath K. Samanthula Dec 2011

A Secure And Distributed Framework To Identify And Share Needed Information, Wei Jiang, Bharath K. Samanthula

Computer Science Faculty Research & Creative Works

Information analysis and communication play significant roles in decision making, especially in battle grounds and situations where national security is under threat. in many situations when information in consideration is sensitive/confidential, it is in our best interests to analyze and share only needed information to minimize the potential of security breach regarding other irrelevant but sensitive information. Thus, the goal of this paper is to investigate the required methodologies and propose an advanced communication framework that enables different entities in distributed environments to identify, share and analyze only needed information, without disclosing other unwanted but sensitive information. Such a framework …

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Personalized Searching For Web Service Using User Interests, Rong Hu, Wanchun Dou, Xiaoqing Frank Liu, Jianxun Liu Dec 2011

Personalized Searching For Web Service Using User Interests, Rong Hu, Wanchun Dou, Xiaoqing Frank Liu, Jianxun Liu

Computer Science Faculty Research & Creative Works

Users usually have different prospective even they input a same keyword to search Web services. It is a challenge to personalize web service search engine as more and more keyword-like Web services becoming available on Internet. User interest plays an important role in personalizing search result. Therefore, through interest extraction, Web service search engine is personalized. at last, an experiment is presented to demonstrate the feasibility of the method. © 2011 IEEE.

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Exploring Caching For Efficient Collection Operations, Swetha Surapaneni, Venkata Krishna Suhas Nerella, Sanjay K. Madria, Thomas Weigert Dec 2011

Exploring Caching For Efficient Collection Operations, Swetha Surapaneni, Venkata Krishna Suhas Nerella, Sanjay K. Madria, Thomas Weigert

Computer Science Faculty Research & Creative Works

Many useful programs operate on collection types. Extensive libraries are available in many programming languages, such as the C++ Standard Template Library, which make programming with collections convenient. Extending programming languages to provide collection queries as first class constructs in the language would not only allow programmers to write queries explicitly in their programs but it would also allow compilers to leverage the wealth of experience available from the database domain to optimize such queries. This paper describes an approach to reducing the run time of programs involving explicit collection queries by leveraging a cache to store previously computed results. …

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Middleware For Supporting Content Sharing In Dynamic Networks, Mohan Kumar, Sharma Chakravarthy, Sanjay Kumar Madria, Mark Linderman, Waseem Naqvi Dec 2011

Middleware For Supporting Content Sharing In Dynamic Networks, Mohan Kumar, Sharma Chakravarthy, Sanjay Kumar Madria, Mark Linderman, Waseem Naqvi

Computer Science Faculty Research & Creative Works

This paper proposes a middleware architecture to enable seamless content sharing in highly dynamic networks, such as those involving a number of aerial unmanned autonomous vehicles (UAVs), which are characterized by constantly changing connectivity and network topology. the proposed middleware maintains up-to-date network status as well as metadata information about data objects in the network nodes, masking the content sharing applications from the network dynamics and faults. Mechanisms for node discovery, message passing, and network management are developed. a strategy is also proposed for efficient replication to ensure availability of data in highly mobile environments. the middleware includes a message …

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Modeling 3d Articulated Motions With Conformal Geometry Videos (Cgvs), Dao T. P. Quynh, Ying He, Xiaoming Chen, Jiazhi Xia, Qian Sun, Steven C. H. Hoi Dec 2011

Modeling 3d Articulated Motions With Conformal Geometry Videos (Cgvs), Dao T. P. Quynh, Ying He, Xiaoming Chen, Jiazhi Xia, Qian Sun, Steven C. H. Hoi

Research Collection School Of Computing and Information Systems

3D articulated motions are widely used in entertainment, sports, military, and medical applications. Among various techniques for modeling 3D motions, geometry videos (GVs) are a compact representation in that each frame is parameterized to a 2D domain, which captures the 3D geometry (x, y, z) to a pixel (r, g, b) in the image domain. As a result, the widely studied image/video processing techniques can be directly borrowed for 3D motion. This paper presents conformal geometry videos (CGVs), a novel extension of the traditional geometry videos by taking into the consideration of the isometric nature of 3D articulated motions. We …

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Towards Failure Free Design: An Analysis Of Risk Mitigation Communication, Daniel Krus, Katie Grantham Dec 2011

Towards Failure Free Design: An Analysis Of Risk Mitigation Communication, Daniel Krus, Katie Grantham

Engineering Management and Systems Engineering Faculty Research & Creative Works

In order to ensure that risk mitigation strategies are properly communicated to and understood by those who would use them in future designs, a common language of risk mitigation should exist. This paper focuses on a set of elements for describing risk mitigation strategies based on a linguistic analysis of the information such strategies must communicate to the design team. Sample strategies are then decomposed into these attributes and evaluated using the Gricean cooperation principle, relevance theory, and functional analysis theories from the pragmatics sub-field of linguistics. using the deficiencies found from this analysis, a format for risk mitigation strategies …

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