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Articles 12571 - 12600 of 13653
Full-Text Articles in Entire DC Network
Generalized 'Probe' Model For Arbitrary Dephasing Mechanisms, Supriyo Datta
Generalized 'Probe' Model For Arbitrary Dephasing Mechanisms, Supriyo Datta
Department of Electrical and Computer Engineering Technical Reports
It has been shown earlier that in the linear response regime, dephasing by point scatterers (within the self-consistent Born approximation) can be visualized in terms of point voltage probes attached to each space and energy coordinate (r,E). In this paper we derive a generalized linear response equation starting from the non-equilibrium Green function formalism that can be used to describe any dephasing process in any approximation. The dephasing is characterized by a 'reservoir function' which can be evaluated from the self-energy. The linear response equation can be visualized in terms of voltage probes but with individual probes connected to each …
Generalized 'Probe' Model For Arbitrary Dephasing Mechanisms, Supriyo Datta
Generalized 'Probe' Model For Arbitrary Dephasing Mechanisms, Supriyo Datta
Department of Electrical and Computer Engineering Technical Reports
It has been shown earlier that in the linear response regime, dephasing by point scatterers (within the self-consistent Born approximation) can be visualized in terms of point voltage probes attached to each space and energy coordinate (r,E). In this paper we derive a generalized linear response equation starting from the non-equilibrium Green function formalism that can be used to describe any dephasing process in any approximation. The dephasing is characterized by a ‘reservoir function’ which can be evaluated from the self-energy. The linear response equation can be visualized in terms of voltage probes but with individual probes connected to each …
Electronic Skeletons: Modeling Skeletal Structures With Piecewise Algebraic Surfaces, Chanderjit L. Bajaj
Electronic Skeletons: Modeling Skeletal Structures With Piecewise Algebraic Surfaces, Chanderjit L. Bajaj
Department of Computer Science Technical Reports
No abstract provided.
Portable 3d Graphics In A Heterogeneous Distributed Environment, Vinod Anupam, Chanderjit L. Bajaj, Malcolm C. Fields, Andrew V. Royappa
Portable 3d Graphics In A Heterogeneous Distributed Environment, Vinod Anupam, Chanderjit L. Bajaj, Malcolm C. Fields, Andrew V. Royappa
Department of Computer Science Technical Reports
No abstract provided.
The Shastra Distributed And Collaborative Geometric Design Environment, Vinod Anupam, Chanderjit L. Bajaj, Andrew V. Royappa
The Shastra Distributed And Collaborative Geometric Design Environment, Vinod Anupam, Chanderjit L. Bajaj, Andrew V. Royappa
Department of Computer Science Technical Reports
No abstract provided.
Stability Criteria For Yet Another Multidimensional Distributed System, Leonidas Georgiadis, Wojciech Szpankowski
Stability Criteria For Yet Another Multidimensional Distributed System, Leonidas Georgiadis, Wojciech Szpankowski
Department of Computer Science Technical Reports
No abstract provided.
Laser Bandwidth-Induced Fluctuations In The Intensity Transmitted By A Fabry-Perot Interferometer, Gerhard Klimeck, Daniel Elliott, M. Hamilton
Laser Bandwidth-Induced Fluctuations In The Intensity Transmitted By A Fabry-Perot Interferometer, Gerhard Klimeck, Daniel Elliott, M. Hamilton
Birck and NCN Publications
We have measured the power spectrum of the intensity Auctuations of light transmitted by a Fabry- Perot interferometer when the input field is the real Gaussian field. The real Gaussian field is a field characterized by real, random (Gaussian) amplitude Auctuations. The bandwidth of the real Gaussian field was varied, taking on values less than that of the interferometer, as well as greater. Comparisons of the measured spectra with calculated spectra are quite satisfactory. Of special interest is a feature in the spectra centered at the laser-interferometer detuning frequency.
Library School Communication, Jerry Seat
The Ganith Algebraic Geometry Toolkit V 1.0, Chanderjit Bajaj, Andrew V. Royappa
The Ganith Algebraic Geometry Toolkit V 1.0, Chanderjit Bajaj, Andrew V. Royappa
Department of Computer Science Technical Reports
No abstract provided.
The Vaidak Medical Imaging And Model Reconstruction Toolkit, Brian Bailey, Chanderjit Bajaj, Malcolm C. Fields
The Vaidak Medical Imaging And Model Reconstruction Toolkit, Brian Bailey, Chanderjit Bajaj, Malcolm C. Fields
Department of Computer Science Technical Reports
No abstract provided.
Computer Viruses And Ethics, Eugene H. Spafford
Computer Viruses And Ethics, Eugene H. Spafford
Department of Computer Science Technical Reports
No abstract provided.
C1 Smoothing Of Polyhedra With Implicit Surface Patches, Chanderjit L. Bajaj, Insung Ihm
C1 Smoothing Of Polyhedra With Implicit Surface Patches, Chanderjit L. Bajaj, Insung Ihm
Department of Computer Science Technical Reports
No abstract provided.
Exploiting Fine-Grain Concurrency Analytical Insights In Superscalar Processor Design, Pradeep K. Dubey, George B. Adams Iii, Michael J. Flynn
Exploiting Fine-Grain Concurrency Analytical Insights In Superscalar Processor Design, Pradeep K. Dubey, George B. Adams Iii, Michael J. Flynn
Department of Electrical and Computer Engineering Technical Reports
This dissertation develops analytical models to provide insight into various design issues associated with superscalar-type processors, i.e., the processors capable of executing multiple instructions per cycle. A survey of the existing machines and literature has been completed with a proposed classification of various approaches for exploiting fine-grain concurrency. Optimization of a single pipeline is discussed based on an analytical model. The model-predicted performance curves are found to be in close proximity to published results using simulation techniques. A model is also developed for comparing different branch strategies for single-pipeline processors in terms of their effectiveness in reducing branch delay. The …
Blockwise Transform Image Coding Enhancement And Edge Detection, Sabzali Aghagolzadeh
Blockwise Transform Image Coding Enhancement And Edge Detection, Sabzali Aghagolzadeh
Department of Electrical and Computer Engineering Technical Reports
The goal of this thesis is high quality image coding, enhancement and edge detection. A unified approach using novel fast transforms is developed to achieve all three objectives. Requirements are low bit rate, low complexity of implementation and parallel processing. The last requirement is achieved by processing the image in small blocks such that all blocks can be processed simultaneously. This is similar to biological vision. A major issue is to minimize the resulting block effects. This is done by using proper transforms and possibly an overlap-save technique. The bit rate in image coding is minimized by developing new results …
Tree-Structured Nonlinear Adaptive Signal Processing, C. S. Ravishankar, Saul B. Gelfand, Edward J. Delp
Tree-Structured Nonlinear Adaptive Signal Processing, C. S. Ravishankar, Saul B. Gelfand, Edward J. Delp
Department of Electrical and Computer Engineering Technical Reports
In communication systems, nonlinear adaptive filtering has become increasingly popular in a variety of applications such as channel equalization, echo cancellation and speech coding. However, existing nonlinear adaptive filters such as polynomial (truncated Volterra series) filters and multilayer perceptrons suffer from a number of problems. First, although high Order polynomials can approximate complex nonlinearities, they also train very slowly. Second, there is no systematic and efficient way to select their structure. As for multilayer perceptrons, they have a very complicated structure and train extremely slowly Motivated by the success of classification and regression trees on difficult nonlinear and nonparametfic problems, …
Efficient Importance Sampling Simulations For Digital Communication Systems, Jyun-Cheng Chen
Efficient Importance Sampling Simulations For Digital Communication Systems, Jyun-Cheng Chen
Department of Electrical and Computer Engineering Technical Reports
Importance sampling is a- modified. Monte Carlo simulation technique which can dramatically reduce the computational cost of the Monte Carlo method. A complete development is presented for its use in the estimation of bit error rates /V for digital communication systems with small Gaussian noise inputs. Emphasis is on the optimal mean-translation Gaussian simulation density function design and the event simulation method as applied to systems which employ quasi-regular trellis codes. These codes include the convolutional codes and many TCM (Ungerboeck) codes. Euclidean distance information of a code is utilized to facilitate the simulation. Also, the conditional importance sampling technique …
Collision Detection And Analysis In A Physically Based Simulation, William J. Bouma, George Vanĕček
Collision Detection And Analysis In A Physically Based Simulation, William J. Bouma, George Vanĕček
Department of Computer Science Technical Reports
No abstract provided.
Selective Inheritance And Overriding In Statically-Typed Object-Oriented Languages, Ryan Stansifer, Dan Wetklow
Selective Inheritance And Overriding In Statically-Typed Object-Oriented Languages, Ryan Stansifer, Dan Wetklow
Department of Computer Science Technical Reports
No abstract provided.
Multidimensional Digital Searching And Some New Parameters In Tries, Peter Kirschenhofer, Helmut Prodinger, Wojciech Szpankowski
Multidimensional Digital Searching And Some New Parameters In Tries, Peter Kirschenhofer, Helmut Prodinger, Wojciech Szpankowski
Department of Computer Science Technical Reports
No abstract provided.
Philco: Some Recollections Of The Philco Transac S-2000, Saul Rosen
Philco: Some Recollections Of The Philco Transac S-2000, Saul Rosen
Department of Computer Science Technical Reports
No abstract provided.
Porting Ncube Packages To Ipsc/860 And Ipsc/2 Hypercubes, Jingwen Wang, Mo Mu
Porting Ncube Packages To Ipsc/860 And Ipsc/2 Hypercubes, Jingwen Wang, Mo Mu
Department of Computer Science Technical Reports
No abstract provided.
Negotiating And Supporting Interdependent Data In Very Large Federated Database Systems, Ahmed K. Elmagarmid, James G. Mullen
Negotiating And Supporting Interdependent Data In Very Large Federated Database Systems, Ahmed K. Elmagarmid, James G. Mullen
Department of Computer Science Technical Reports
No abstract provided.
Design And Implementation Of A Distributed System With Dynamic Resource Allocation Based Upon Bidding Schemes, Dan C. Marinescu, Kenneth Wenstrup, Patrick Davis
Design And Implementation Of A Distributed System With Dynamic Resource Allocation Based Upon Bidding Schemes, Dan C. Marinescu, Kenneth Wenstrup, Patrick Davis
Department of Computer Science Technical Reports
No abstract provided.
Performance Experiments And Optimizations Of Pde Sparse Solvers On Hypercubes,, Mo Mu, John R. Rice, Jingwen Wang
Performance Experiments And Optimizations Of Pde Sparse Solvers On Hypercubes,, Mo Mu, John R. Rice, Jingwen Wang
Department of Computer Science Technical Reports
No abstract provided.
Fundamental Techniques For Geometric And Solid Modeling, Christoph M. Hoffmann, George Vanĕček
Fundamental Techniques For Geometric And Solid Modeling, Christoph M. Hoffmann, George Vanĕček
Department of Computer Science Technical Reports
No abstract provided.
Stability Of Token Passing Rings, Leonidas Greorgiadis, Wojciech Szpankowski
Stability Of Token Passing Rings, Leonidas Greorgiadis, Wojciech Szpankowski
Department of Computer Science Technical Reports
No abstract provided.
Route Adaptation And Persistence In Networks, Kenneth R. Rodemann
Route Adaptation And Persistence In Networks, Kenneth R. Rodemann
Department of Computer Science Technical Reports
No abstract provided.
A Framework For Intelligent Parallel Compilers, Ko-Yang Want
A Framework For Intelligent Parallel Compilers, Ko-Yang Want
Department of Computer Science Technical Reports
No abstract provided.
On The Impossibility Of Atomic Commitment In Multidatabase Systems, James G. Mullen, Ahmed K. Elmagarmid
On The Impossibility Of Atomic Commitment In Multidatabase Systems, James G. Mullen, Ahmed K. Elmagarmid
Department of Computer Science Technical Reports
No abstract provided.
Preventing Weak Password Choices, Eugene H. Spafford
Preventing Weak Password Choices, Eugene H. Spafford
Department of Computer Science Technical Reports
No abstract provided.