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Articles 1 - 30 of 145
Full-Text Articles in Computer Engineering
Dynamic Modeling, Parameter Estimation And Control Of A Leg Prosthesis Test Robot, Hanz Richter, Daniel Simon, William Smith, Sergey Samorezov
Dynamic Modeling, Parameter Estimation And Control Of A Leg Prosthesis Test Robot, Hanz Richter, Daniel Simon, William Smith, Sergey Samorezov
Hanz Richter
Robotic testing can facilitate the development of new concepts, designs and control systems for prosthetic limbs. Human subject test clearances, safety and the lack of repeatability associated with human trials can be reduced or eliminated with automated testing, and test modalities are possible which are dangerous or inconvenient to attempt with patients. This paper describes the development, modeling, parameter estimation and control of a robot capable of reproducing two degree-of-freedom hip motion in the sagittal plane. Hip vertical displacement and thigh angle motion profiles are applied to a transfemoral prosthesis attached to the robot. A treadmill is used as walking …
Data And Network Optimization Effect On Web Performance, Steven Rosenberg, Surbhi Dangi, Isuru Warnakulasooriya
Data And Network Optimization Effect On Web Performance, Steven Rosenberg, Surbhi Dangi, Isuru Warnakulasooriya
Surbhi Dangi
In this study, we measure the effects of two software approaches to improving data and network performance: 1. Content optimization and compression; and 2. Optimizing network protocols. We achieve content optimization and compression by means of BoostEdge by ActivNetworks and employ the SPDY network protocol by Google to lower the round trip time for HTTP transactions. Since the data and transport layers are separate, we conclude our investigation by studying the combined effect of these two techniques on web performance. Using document mean load time as the measure, we found that with and without packet loss, both BoostEdge and SPDY …
Vanadium Oxide Thin-Film Variable Resistor-Based Rf Switches, Kuanchang Pan, Weisong Wang, Eunsung Shin, Kelvin Freeman, Guru Subramanyam
Vanadium Oxide Thin-Film Variable Resistor-Based Rf Switches, Kuanchang Pan, Weisong Wang, Eunsung Shin, Kelvin Freeman, Guru Subramanyam
Guru Subramanyam
Vanadium dioxide (VO2) is a unique phase change material (PCM) that possesses a metal-to-insulator transition property. Pristine VO2 has a negative temperature coefficient of resistance, and it undergoes an insulator-to-metal phase change at a transition temperature of 68°C. Such a property makes the VO2 thin-film-based variable resistor (varistor) a good candidate in reconfigurable electronics to be integrated with different RF devices such as inductors, varactors, and antennas. Series single-pole single-throw (SPST) switches with integrated VO2 thin films were designed, fabricated, and tested. The overall size of the device is 380 μm × 600 μm. The SPST switches were fabricated on …
A High Performance Ceramic-Polymer Separator For Lithium Batteries, Jitendra Kumar, Padmakar Kichambare, Amarendra K. Rai, Rabi Bhattacharya, Stanley J. Rodrigues, Guru Subramanyam
A High Performance Ceramic-Polymer Separator For Lithium Batteries, Jitendra Kumar, Padmakar Kichambare, Amarendra K. Rai, Rabi Bhattacharya, Stanley J. Rodrigues, Guru Subramanyam
Guru Subramanyam
A three-layered (ceramic-polymer-ceramic) hybrid separator was prepared by coating ceramic electrolyte [lithium aluminum germanium phosphate (LAGP)] over both sides of polyethylene (PE) polymer membrane using electron beam physical vapor deposition (EB-PVD) technique. Ionic conductivities of membranes were evaluated after soaking PE and LAGP/PE/LAGP membranes in a 1 Molar (1M) lithium hexafluroarsenate (LiAsF6) electrolyte in ethylene carbonate (EC), dimethyl carbonate (DMC) and ethylmethyl carbonate (EMC) in volume ratio (1:1:1). Scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques were employed to evaluate morphology and structure of the separators before and after cycling performance tests to better understand structure-property correlation. As compared …
Industry-University Collaboration: A University Of Dayton Model, Guru Subramanyam
Industry-University Collaboration: A University Of Dayton Model, Guru Subramanyam
Guru Subramanyam
This paper introduces industry-university collaboration activities currently in place at the University of Dayton's School of Engineering. These collaborations are important to prepare industry-ready graduates who excel in technical, entrepreneurial, and leadership skills. One of the key curricular components is the industry-sponsored multidisciplinary projects. Industry involvement in advisory committee, strategic research partnerships, and other forms are discussed.
Can Declared Strategy Voting Be An Effective Instrument For Group Decision-Making?, Lorrie Cranor
Can Declared Strategy Voting Be An Effective Instrument For Group Decision-Making?, Lorrie Cranor
Lorrie F Cranor
The goal of this research is to determine whether declared strategy voting can be an effective tool for group decision-making. Declared strategy voting is a novel group decision-making procedure in which preference is specified using voting strategies - first-order mathematical functions that specify a choice in terms of zero or more parameters. This research will focus on refining the declared strategy voting concept, developing an accessible implementation of declared strategy voting that can be used for mock elections, assessing the potential impacts of declared strategy voting, and evaluating the effectiveness of declared strategy voting for group decision-making. This proposal describes …
Design And Implementation Of A Practical Security-Conscious Electronic Polling System, Lorrie Cranor, Ron Cytron
Design And Implementation Of A Practical Security-Conscious Electronic Polling System, Lorrie Cranor, Ron Cytron
Lorrie F Cranor
We present the design and implementation of Sensus, a practical, secure and private system for conducting surveys and elections over computer networks. Expanding on the work of Fujioka, Okamoto, and Ohta, Sensus uses blind signatures to ensure that only registered voters can vote and that each registered voter only votes once, while at the same time maintaining voters' privacy. Sensus allows voters to verify independently that their votes were counted correctly, and anonymously challenge the results should their votes be miscounted. We outline seven desirable properties of voting systems and show that Sensus satisfied these properties well, in some cases …
Non-Linear Spectral Unmixing Of Moon Mineralogy Mapper (M3 ) Data, Keshav Dev Singh, Ramakrishnan Desikan
Non-Linear Spectral Unmixing Of Moon Mineralogy Mapper (M3 ) Data, Keshav Dev Singh, Ramakrishnan Desikan
Innovative Research Publications IRP India
Most of the approaches to solve the unmixing problem are based on the Linear Mixing Model (LMM) which is questionable. Therefore, nonlinear spectral model is generally used to study the effects of multiple scattering in the complex surfaces. In this paper, we have demonstrated the application of Radiative Transform Equation (RTE) based Hapke multi scattering model. The Hapke model based non-linear spectral unmixing is carried out on a Moon Mineralogy Mapper (M3 ) data. The values of six non-linear Hapke's model parameters are estimated using a MATLAB based algorithm after optimizing the Hapke corrected M3-Endmembers and modeled spectra through minimum …
Modification In Weighted Clustering Algorithm For Faster Clustering Formation By Considering Absolute Attributes Of Mobile Nodes And Greedy Method For Role Selection Of Mobile Nodes In Manet, Vijayanand Kumar, Rajesh Kumar Yadav
Modification In Weighted Clustering Algorithm For Faster Clustering Formation By Considering Absolute Attributes Of Mobile Nodes And Greedy Method For Role Selection Of Mobile Nodes In Manet, Vijayanand Kumar, Rajesh Kumar Yadav
Innovative Research Publications IRP India
Wirelessly allocated mobile nodes which are configured in a geographically adjacent to each other can form cluster by applying rules on the mobile nodes. Each cluster family have different members with different assigned roles such as cluster head, cluster members, gateway members and ordinary nodes which can perform roles of any three mentioned roles as the time progresses based on absolute and relative attribute information. Absolute attributes of mobile nodes can be mobility, energy consumed and entropy of the mobile node. Relative attributes can be considered as neighbour information and sum of distances of neighbours etc. Relative attributes are the …
Creating Business Value From Digital Data Streams: The Role Of Organizational Interventions, Rajeev Sharma, Abhijith Anand, Tim Coltman
Creating Business Value From Digital Data Streams: The Role Of Organizational Interventions, Rajeev Sharma, Abhijith Anand, Tim Coltman
Abhijith Anand
No abstract provided.
Energy Aware Forwarding In Content Centric Based Multihop Wireless Ad Hoc Networks, Rana Asif Rehman, Byung-Seo Kim
Energy Aware Forwarding In Content Centric Based Multihop Wireless Ad Hoc Networks, Rana Asif Rehman, Byung-Seo Kim
Rana Asif Rehman
Content centric networking (CCN) is a newly proposed futuristic Internet paradigm in which communication depends on the decoupling of content names from their locations. In CCN-based multihop wireless ad hoc networks, the participating nodes show dynamic topology, intermittent connectivity, channels fluctuation, and severe constraints such as limited battery power. In the case of traffic congestion, the affected nodes die early owing to the shortage of battery power. Consequently, all pending request entries are also destroyed, which further degrades the network performance as well as the node working lifetime. In this study, we have proposed a novel energy aware transmission scheme …
Autonomous Cars And Driverless Lethal Autonomy, Nyagudi Musandu Nyagudi
Autonomous Cars And Driverless Lethal Autonomy, Nyagudi Musandu Nyagudi
Nyagudi M Nyagudi
“The small picture” - make an advanced autonomous /driverless car. Lots of algorithms, sensors, computers and other gizmos. Now get it to take you to work, park itself and seamlessly run your family errands around the city. Taking grandma to the doctor for the medical check-up, getting the children from school, etc. With Radar, Lidar and other sensors, the car steering with ease through the traffic, no driver to pay, that is another plus, fuel/energy efficiency, yet another plus. It is a bold new world and the sky is the limit. Without the resolution of “small picture” issues there is …
Adaptive Beam Director For A Tiled Fiber Array, Mikhail Vorontsov, Jim F. Riker, Ernst Polnau, Svetlana Lachinova, Venkata S. Rao Gudimetla
Adaptive Beam Director For A Tiled Fiber Array, Mikhail Vorontsov, Jim F. Riker, Ernst Polnau, Svetlana Lachinova, Venkata S. Rao Gudimetla
Mikhail Vorontsov
We present the concept development of a novel atmospheric compensation system based on adaptive tiled fiber array architecture operating with target-in-the-loop scenarios for directed beam applications. The adaptive tiled fiber array system is integrated with adaptive beam director (ABD). Wavefront control and sensing functions are performed directly on the beam director telescope primary mirror. The beam control of the adaptive tiled fiber array aims to compensate atmospheric turbulence-induced dynamic phase aberrations and results in a corresponding brightness increase on the illuminated extended object. The system is specifically designed for tiled fiber system architectures operating in strong intensity scintillation and speckle-modulation …
Characterization Of Atmospheric Turbulence Effects Over 149 Km Propagation Path Using Multi-Wavelength Laser Beacons, Mikhail Vorontsov, Gary W. Carhart, Venkata S. Rao Gudimetla, Thomas Weyrauch, Eric Stevenson, Svetlana Lachinova, Leonid A. Beresnev, Jony Jiang Liu, Karl Rehder, Jim F. Riker
Characterization Of Atmospheric Turbulence Effects Over 149 Km Propagation Path Using Multi-Wavelength Laser Beacons, Mikhail Vorontsov, Gary W. Carhart, Venkata S. Rao Gudimetla, Thomas Weyrauch, Eric Stevenson, Svetlana Lachinova, Leonid A. Beresnev, Jony Jiang Liu, Karl Rehder, Jim F. Riker
Mikhail Vorontsov
We describe preliminary results of a set of laser beam propagation experiments performed over a long (149 km) near-horizontal propagation path between Mauna Loa (Hawaii Island) and Haleakala (Island of Maui) mountains in February 2010. The distinctive feature of the experimental campaign referred to here as the Coherent Multi-Beam Atmospheric Transceiver (COMBAT) experiments is that the measurements of the atmospheric-turbulence induced laser beam intensity scintillations at the receiver telescope aperture were obtained simultaneously using three laser sources (laser beacons) with different wavelengths (λ1 = 0.53 μm, λ2 = 1.06 μm, and λ3 = 1.55 μm). The presented experimental results on …
Comparison Of Turbulence-Induced Scintillations For Multi-Wavelength Laser Beacons Over Tactical (7 Km) And Long (149 Km) Atmospheric Propagation Paths, Mikhail Vorontsov, Venkata S. Rao Gudimetla, Gary W. Carhart, Thomas Weyrauch, Svetlana Lachinova, Ernst Polnau, Joseph Rierson, Leonid A. Beresnev, Jony Jiang Liu, Jim F. Riker
Comparison Of Turbulence-Induced Scintillations For Multi-Wavelength Laser Beacons Over Tactical (7 Km) And Long (149 Km) Atmospheric Propagation Paths, Mikhail Vorontsov, Venkata S. Rao Gudimetla, Gary W. Carhart, Thomas Weyrauch, Svetlana Lachinova, Ernst Polnau, Joseph Rierson, Leonid A. Beresnev, Jony Jiang Liu, Jim F. Riker
Mikhail Vorontsov
We report results of the experimental analysis of atmospheric effects on laser beam propagation over two distinctive propagation paths: a long-range (149 km) propagation path between Mauna Loa (Island of Hawaii) and Haleakala (Island of Maui) mountains, and a tactical-range (7 km) propagation path between the roof of the Dayton Veterans Administration Medical Center (VAMC) and the Intelligent Optics Laboratory (IOL/UD) located on the 5th floor of the University of Dayton College Park Center building. Both testbeds include three laser beacons operating at wavelengths 532 nm, 1064 nm, and 1550 nm and a set of identical optical receiver systems with …
Atmospheric Turbulence Compensation Of Point Source Images Using Asynchronous Stochastic Parallel Gradient Descent Technique On Amos 3.6 M Telescope, Mikhail Vorontsov, Jim F. Riker, Gary W. Carhart, Venkata S. Rao Gudimetla, Leonid A. Beresnev, Thomas Weyrauch
Atmospheric Turbulence Compensation Of Point Source Images Using Asynchronous Stochastic Parallel Gradient Descent Technique On Amos 3.6 M Telescope, Mikhail Vorontsov, Jim F. Riker, Gary W. Carhart, Venkata S. Rao Gudimetla, Leonid A. Beresnev, Thomas Weyrauch
Mikhail Vorontsov
The Stochastic Parallel Gradient Descent Technique-based Adaptive Optics (SPGD-AO) system described in this presentation does not use a conventional wavefront sensor. It uses a metric signal collected by a single pixel detector placed behind a pinhole in the image plane to drive three deformable mirrors (DMs). The system is designed to compensate the image for turbulence effects. The theory behind this method is described in detail in [1]. However this technique, while widely simulated and tested in the laboratory, was not yet verified in astronomical field site experiments. During the month of May 2007, a series of experiments with SPGD-AO …
Pocket Deformable Mirror For Adaptive Optics Applications, Leonid A. Beresnev, Mikhail Vorontsov, Peter Wangsness
Pocket Deformable Mirror For Adaptive Optics Applications, Leonid A. Beresnev, Mikhail Vorontsov, Peter Wangsness
Mikhail Vorontsov
Adaptive/active optical elements are designed to improve optical system performance in the presence of phase aberrations. For atmospheric optics and astronomical applications, an ideal deformable mirror should have sufficient frequency bandwidth for compensation of fast changing wave front aberrations induced by either atmospheric turbulences or by turbulent air flows surrounding a flying object (air optical effects). In many applications, such as atmospheric target tracking, remote sensing from flying aircraft, boundary layer imaging, laser communication and laser beam projection over near horizontal propagation paths the phase aberration frequency bandwidth can exceed several kHz. These fast-changing aberrations are currently compensated using relatively …
Adaptive Optics Performance Over Long Horizontal Paths: Aperture Effects In Multi-Conjugate Adaptive Optical Systems, Miao Yu, Mikhail Vorontsov, Svetlana Lachinova, Jim F. Riker, Venkata S. Rao Gudimetla
Adaptive Optics Performance Over Long Horizontal Paths: Aperture Effects In Multi-Conjugate Adaptive Optical Systems, Miao Yu, Mikhail Vorontsov, Svetlana Lachinova, Jim F. Riker, Venkata S. Rao Gudimetla
Mikhail Vorontsov
We analyze various scenarios of the aperture effects in adaptive optical receiver-type systems when inhomogeneities of the wave propagation medium are distributed over long horizontal propagation path, or localized in a few thin layers remotely located from the receiver telescope pupil. Phase aberration compensation is performed using closed-loop control architectures based on phase conjugation and decoupled stochastic parallel gradient descent (DSPGD) control algorithms. Both receiver system aperture diffraction effects and the impact of wave-front corrector position on phase aberration compensation efficiency are analyzed for adaptive systems with single or multiple wave-front correctors.
An Effectual Breakthrough For Concord Relentless Itemset Exhuming Based On Map Reduce, Ahilandeeswari G.,, Dr. R. Manicka Chezian
An Effectual Breakthrough For Concord Relentless Itemset Exhuming Based On Map Reduce, Ahilandeeswari G.,, Dr. R. Manicka Chezian
Innovative Research Publications IRP India
Relentless Itemset Exhuming (RIE) is a archetypal data Exhuming topic with many authentic world applications such as market basket analysis. In authentic world the dataset size grows, researchers have prophesied Map Reduce version of RIE contrivance to meet the immensely colossal data challenge. Subsisting relentless itemset contrivance cannot distribute data equipollent among all the nodes and MR Apriori contrivance paper utilize manifold map/reduce procedures and engender an inordinate extent of key-value pairs with value. In this paper present a novel collateral, distributed contrivance which addresses these quandaries. We prophesis an ameliorated collateral contrivance and discuss its applications in this paper. …
Design Of A Reading Recommendation Method Based On User Preference For Online Learning, Yanling Li,, S. C. Ng,, Felermino M. D. A. Ali
Design Of A Reading Recommendation Method Based On User Preference For Online Learning, Yanling Li,, S. C. Ng,, Felermino M. D. A. Ali
Innovative Research Publications IRP India
A design of reading recommendation method based on user preference for online learning namely, RMUP is proposed. The aim of this study is to design an online learning recommendation system to support automatic information extract, dynamic user preference analysis and conduct an accurate recommendation of reading materials to relevant users.
Moodle Data Retrieval For Educational Data Mining, Felermino M. D. A. Ali, S. C. Ng
Moodle Data Retrieval For Educational Data Mining, Felermino M. D. A. Ali, S. C. Ng
Innovative Research Publications IRP India
This study aims to incorporate a new service into existing Moodle Core Services for student's usage data retrieval. This service can ease the pre-processing in EDM and provide a generic mechanism for data portability. The proposed method expects to reduce the data pre-processing time and enhance the interoperability in Moodle.
An Energy Proficiency Positioned Dynamic Threshold Approach To The Migration Of Virtual Machines In Dvs Empowered Green Cloud Data Centers, C. Saranya.,, Dr. R. Manicka Chezian
An Energy Proficiency Positioned Dynamic Threshold Approach To The Migration Of Virtual Machines In Dvs Empowered Green Cloud Data Centers, C. Saranya.,, Dr. R. Manicka Chezian
Innovative Research Publications IRP India
The furthermost eco-amicable challenge nowadays is ecumenical warming. Energy disaster conveys green computing. Dynamic voltage scaling (DVS) has been a crucial procedure in exploiting the hardware characteristics of cloud datacenters to preserve energy by lowering the supply voltage and operating frequency. The study presents modified power consumption can be reduced by live migration of the virtual machines (VM) as required and by switching off idle machines. So, proposed a dynamic threshold predicated approach DMM CPU utilization for host at data center. This consolidation will work on dynamic and capricious workload evading nonessential power consumption. It will meet energy efficiency requisite …
Addressing Food Wastage By Tracking The Expiry Date, Shiva P. Bachu
Addressing Food Wastage By Tracking The Expiry Date, Shiva P. Bachu
Electronics Elements
We know trash is an enormous problem in the world since trash does not only affect just humans but it also affects living creatures in general. The biggest contributor of trash in the United States is food waste. Food waste is produced by every human and the amounts of food waste is astonishing. Americans throw away almost half of the food that they buy, which is almost worth $165 billion per year. Food waste which end up in landfills and incinerators produces methane which is a greenhouse gas and can contribute to global warming. Trash in general and food waste …
Bridging Researchers’ Active Data Storage Needs, Matt Schultz
Bridging Researchers’ Active Data Storage Needs, Matt Schultz
Matt Schultz
Gvsu Repository Migration Update, Matt Schultz
Gvsu Repository Migration Update, Matt Schultz
Matt Schultz
Text Stream Mining Using Suffix Trees, Pamela Vinitha Eric,, Kusum Rajput,, Veda .N
Text Stream Mining Using Suffix Trees, Pamela Vinitha Eric,, Kusum Rajput,, Veda .N
Innovative Research Publications IRP India
Information explosion has resulted in the need for more advanced methods for managing the information. Text stream mining, is very important as people and organizations are trying to process and understand as much of information as possible. Generalised suffix tree is a data structure which is capable of solving a number of text stream mining tasks like detecting changes in the text stream, identifying reuse of text and detecting events by identifying when the frequencies of phrases change in a statistically significant way. An efficient method with polynomial time complexity that uses suffix trees to analyse streams of data in …
M-Learning System Based On Ontology, Dr Leelavathi Rajamanickam,, Chen Woon Choong
M-Learning System Based On Ontology, Dr Leelavathi Rajamanickam,, Chen Woon Choong
Innovative Research Publications IRP India
Information and communication Technology is a gateway through which large population of students has been addressed. Mobile learning technology the latest arrival highly changing the way the students learn, interact, access up to data information. It mainly satisfies the current and future generation which needs information at the earliest rather than later few touches. The World Wide Web acts as an interface in E- learning as well as in mobile learning (Mlearning) environments. It supports and facilitates the delivery of teaching and learning materials. M - l e a r n i n g provides quality educational content with the …
Integrate Webex Recorded Meetings With Video Sharing Development, Zhi-Xue Xu
Integrate Webex Recorded Meetings With Video Sharing Development, Zhi-Xue Xu
Zhi-Xue Xu
WebEx has provided powerful online meeting and video conference. Many important meetings have been held by WebEx. We should record these important meetings in time on WebEx. WebEx meetings can be recorded to the streaming video files that will be stored in the WebEx Server and back play them repeatedly if you want. The WebEx recorded meeting files with ARF format can be converted to WMV, SWF and MP4 format video files by WebEx Network Recording Player. The more different video formats, AVI, FLV, MOV, and MPEG4 also can be converted by third parties video convert software. The format WMV …
Migration From Copper To Fiber Access Network Using Passive Optical Network For Green And Dry Field Areas Of Pakistan, Umar Farooq
Migration From Copper To Fiber Access Network Using Passive Optical Network For Green And Dry Field Areas Of Pakistan, Umar Farooq
Umar Farooq
Passive Optical Networks (PON) technology brings an evolution in the industry of Telecommunication for the provisioning of High Speed Internet (HSI) and Triple Play bundled Services that includes Voice, Data, and Video Streaming throughout the world. In Pakistan most of the service providers are offering broadband services on traditional copper OSP (Outside Plant) network since 2000. Demand for the high speed internet and broadband is increasing rapidly, it is desired with great need to migrate from traditional copper based OSP network to PON – FTTx (Fiber To The x) infrastructure. Considering the geographical requirements in Pakistan a scalable fiber network …
Answer Credibility: A Language Modeling Approach To Answer Validation, Protima Banerjee, Hyoil Han
Answer Credibility: A Language Modeling Approach To Answer Validation, Protima Banerjee, Hyoil Han
Hyoil Han
Answer Validation is a topic of significant interest within the Question Answering community. In this paper, we propose the use of language modeling methodologies for Answer Validation, using corpus-based methods that do not require the use of external sources. Specifically, we propose a model for Answer Credibility which quantifies the reliability of a source document that contains a candidate answer and the Question’s Context Model.