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Articles 2911 - 2940 of 3219
Full-Text Articles in Physical Sciences and Mathematics
Tr-2008010: The Logic Of Justification, Sergei Artemov
Tr-2008010: The Logic Of Justification, Sergei Artemov
Computer Science Technical Reports
No abstract provided.
Tr-2008011: Contrast Transfer Function Correction In Electron Microscopy, Joanna Klukowska
Tr-2008011: Contrast Transfer Function Correction In Electron Microscopy, Joanna Klukowska
Computer Science Technical Reports
No abstract provided.
Tr-2008013: Content-Based 3d Mosaics For Large-Scale Dynamic Urban Scenes, Hao Tang, Zhigang Zhu
Tr-2008013: Content-Based 3d Mosaics For Large-Scale Dynamic Urban Scenes, Hao Tang, Zhigang Zhu
Computer Science Technical Reports
No abstract provided.
Tr-2008014: Why Do We Need Justification Logic?, Sergei Artemov
Tr-2008014: Why Do We Need Justification Logic?, Sergei Artemov
Computer Science Technical Reports
No abstract provided.
Tr-2008015: An Efficient Heuristic For The Tree Alignment Problem, Andrés Varón, Ward Wheeler, Amotz Bar-Noy
Tr-2008015: An Efficient Heuristic For The Tree Alignment Problem, Andrés Varón, Ward Wheeler, Amotz Bar-Noy
Computer Science Technical Reports
No abstract provided.
Tr-2008002: On Image Reconstruction From A Small Number Of Projections, G. T. Herman, R. Davidi
Tr-2008002: On Image Reconstruction From A Small Number Of Projections, G. T. Herman, R. Davidi
Computer Science Technical Reports
No abstract provided.
Tr-2008003: Unified Nearly Optimal Algorithms For Structured Integer Matrices And Polynomials, Victor Y. Pan, Brian Murphy, Rhys E. Rosholt
Tr-2008003: Unified Nearly Optimal Algorithms For Structured Integer Matrices And Polynomials, Victor Y. Pan, Brian Murphy, Rhys E. Rosholt
Computer Science Technical Reports
No abstract provided.
Tr-2008005: Weakly Random Additive Preconditioning For Matrix Computations, Victor Y. Pan, Dmitriy Ivolgin, Brian Murphy, Rhys Eric Rosholt, Yuqing Tang, Xiaodong Yan
Tr-2008005: Weakly Random Additive Preconditioning For Matrix Computations, Victor Y. Pan, Dmitriy Ivolgin, Brian Murphy, Rhys Eric Rosholt, Yuqing Tang, Xiaodong Yan
Computer Science Technical Reports
No abstract provided.
Tr-2008007: Degeneration Of Structured Integer Matrices Modulo An Integer, Victor Y. Pan, Xinmao Wang
Tr-2008007: Degeneration Of Structured Integer Matrices Modulo An Integer, Victor Y. Pan, Xinmao Wang
Computer Science Technical Reports
No abstract provided.
Tr-2008008: Schur Aggregation For Linear Systems And Determinants, V. Y. Pan, D. Grady, B. Murphy, G. Qian, R. E. Rosholt, A. D. Ruslanov
Tr-2008008: Schur Aggregation For Linear Systems And Determinants, V. Y. Pan, D. Grady, B. Murphy, G. Qian, R. E. Rosholt, A. D. Ruslanov
Computer Science Technical Reports
No abstract provided.
Tr-2008009: Solving Homogeneous Linear Systems With Weakly Randomized Additive Preprocessing, Victor Y. Pan, Guoliang Qian
Tr-2008009: Solving Homogeneous Linear Systems With Weakly Randomized Additive Preprocessing, Victor Y. Pan, Guoliang Qian
Computer Science Technical Reports
No abstract provided.
Tr-2008016: An Analysis Of Entries In The First Tac Market Design Competition, Jinzhong Niu, Kai Cai, Simon Parsons, Peter Mcburney
Tr-2008016: An Analysis Of Entries In The First Tac Market Design Competition, Jinzhong Niu, Kai Cai, Simon Parsons, Peter Mcburney
Computer Science Technical Reports
No abstract provided.
Topological And Categorical Properties Of Binary Trees, Homeira Pajoohesh
Topological And Categorical Properties Of Binary Trees, Homeira Pajoohesh
Publications and Research
Binary trees are very useful tools in computer science for estimating the running time of so-called comparison based algorithms, algorithms in which every action is ultimately based on a prior comparison between two elements. For two given algorithms A and B where the decision tree of A is more balanced than that of B, it is known that the average and worst case times of A will be better than those of B, i.e., ₸A(n) ≤₸B(n) and TWA (n)≤TWB (n). Thus the most balanced and the most imbalanced binary trees play a main role. Here we consider them as semilattices …
Arkansas Wildlife Gets Report Card At Conference, Aldemaro Romero Jr.
Arkansas Wildlife Gets Report Card At Conference, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Formulas For The Fourier Series Of Orthogonal Polynomials In Terms Of Special Functions, Nataniel Greene
Formulas For The Fourier Series Of Orthogonal Polynomials In Terms Of Special Functions, Nataniel Greene
Publications and Research
An explicit formula for the Fourier coefficient of the Legendre polynomials can be found in the Bateman Manuscript Project. However, formulas for more general classes of orthogonal polynomials do not appear to have been worked out. Here we derive explicit formulas for the Fourier series of Gegenbauer, Jacobi, Laguerre and Hermite polynomials. The methods described here apply in principle to a class of polynomials, including non-orthogonal polynomials.
Inverse Wavelet Reconstruction For Resolving The Gibbs Phenomenon, Nataniel Greene
Inverse Wavelet Reconstruction For Resolving The Gibbs Phenomenon, Nataniel Greene
Publications and Research
The Gibbs phenomenon refers to the lack of uniform convergence which occurs in many orthogonal basis approximations to piecewise smooth functions. This lack of uniform convergence manifests itself in spurious oscillations near the points of discontinuity and a low order of convergence away from the discontinuities. Here we describe a numerical procedure for overcoming the Gibbs phenomenon called the inverse wavelet reconstruction method. The method takes the Fourier coefficients of an oscillatory partial sum and uses them to construct the wavelet coefficients of a non-oscillatory wavelet series.
Anatomy Of An Arabetic Type Design, Saad D. Abulhab
Anatomy Of An Arabetic Type Design, Saad D. Abulhab
Publications and Research
Arabetic type design, like type design in general, should not be limited by rigid rules, other than those advocating open choice and user options. But as with all design fields, highlighting certain principles and guidelines is crucial to realizing a successful project. In an Arabetic font design environment, such guidelines and principles should reveal deeper understanding of various scripts visual and behavioral defining characteristics rather than mere traditional calligraphic and handwriting norms. A main goal of this study is to emphasize that designing Arabetic fonts is much easier than it is portrayed, and designers of all backgrounds should be more …
Rigidity And Stability For Isometry Groups In Hyperbolic 4-Space, Youngju Kim
Rigidity And Stability For Isometry Groups In Hyperbolic 4-Space, Youngju Kim
Dissertations, Theses, and Capstone Projects
It is known that a geometrically finite Kleinian group is quasiconformally stable. We prove that this quasiconformal stability cannot be generalized in 4-dimensional hyperbolic space. This is due to the presence of screw parabolic isometries in dimension 4. These isometries are topologically conjugate to strictly parabolic isometries. However, we show that screw parabolic isometries are not quasiconformally conjugate to strictly parabolic isometries. In addition, we show that two screw parabolic isometries are generically not quasiconformally conjugate to each other. We also give some geometric properties of a hyperbolic 4-manifold related to screw parabolic isometries.
A Fuchsian thrice-punctured sphere group has …
Iterated Aluthge Transforms: A Brief Survey, Jorge Antezana, Enrique R. Pujals, Demetrio Stojanoff
Iterated Aluthge Transforms: A Brief Survey, Jorge Antezana, Enrique R. Pujals, Demetrio Stojanoff
Publications and Research
Given an r × r complex matrix T, if T = U|T| is the polar decomposition of T, then the Aluthge transform is defined by
∆(T) = |T|1/2U|T|1/2.
Let ∆n(T) denote the n-times iterated Aluthge transform of T, i.e. ∆0(T) = T and ∆n(T) = ∆(∆n−1(T)), n ∈ N. In this paper we make a brief survey on the known properties and applications of …
Reasoning About The Behavior Of Aspect-Oriented Programs, Neelam Soundarajan, Raffi T. Khatchadourian, Johan Dovland
Reasoning About The Behavior Of Aspect-Oriented Programs, Neelam Soundarajan, Raffi T. Khatchadourian, Johan Dovland
Publications and Research
Aspect-oriented programming (AOP) has become increasingly popular over the last few years. At the same time, reasoning about the behavior of these programs poses serious challenges. In this paper, we present a rely-guarantee approach to such reasoning. The rely-guarantee approach has proven useful in reasoning about concurrent and distributed programs. We show that some of the key problems encountered in reasoning about aspect-oriented programs are similar to those encountered in reasoning about concurrent programs; and that the rely-guarantee approach, appropriately modified, helps address these problems. We illustrate our approach with a simple example.
An Update On Groundwater Conditions At The Site Of The York College Cuny Campus In Southeastern Queens County, New York City, Nazrul I. Khandaker, Stanley Schleifer, Zarine Ali, Edward A. Molteni
An Update On Groundwater Conditions At The Site Of The York College Cuny Campus In Southeastern Queens County, New York City, Nazrul I. Khandaker, Stanley Schleifer, Zarine Ali, Edward A. Molteni
Publications and Research
The wells operated by the Jamaica Water Supply Company in Queens represent the only large scale utilization of groundwater for public water supply in New York City in recent years. These wells were shut down, for the most part, beginning in 1996. Since that time, water table elevations in the area, which had been drawn down by the withdrawal activity of the Jamaica Water Supply Company, have risen significantly causing some high groundwater problems, including flooding of basements. The New York City Department of Environmental Protection (NYCDEP) has held public hearings on a contemplated resumption of ground water withdrawal in …
Automated Refactoring Of Legacy Java Software To Enumerated Types, Raffi T. Khatchadourian, Jason Sawin, Atanas Rountev
Automated Refactoring Of Legacy Java Software To Enumerated Types, Raffi T. Khatchadourian, Jason Sawin, Atanas Rountev
Publications and Research
Modern Java languages introduce several new features that offer significant improvements over older Java technology. In this article we consider the new enum construct, which provides language support for enumerated types. Prior to recent Java languages, programmers needed to employ various patterns (e.g., the weak enum pattern) to compensate for the absence of enumerated types in Java. Unfortunately, these compensation patterns lack several highly-desirable properties of the enum construct, most notably, type safety. We present a novel fully-automated approach for transforming legacy Java code to use the new enumeration construct. This semantics-preserving approach increases type safety, produces code that is …
1139-3159_Nir_Spex, Dagny L. Looper
A Dynamic-Trend Exponential Smoothing Model, Don Miller, Dan Williams
A Dynamic-Trend Exponential Smoothing Model, Don Miller, Dan Williams
Publications and Research
Forecasters often encounter situations in which the local pattern of a time series is not expected to persist over the forecasting horizon. Since exponential smoothing models emphasize recent behavior, their forecasts may not be appropriate over longer horizons. In this paper, we develop a new model in which the local trend line projected by exponential smoothing converges asymptotically to an assumed future long-run trend line, which might be an extension of a historical long-run trend line. The rapidity of convergence is governed by a parameter. A familiar example is an economic series exhibiting persistent long-run trend with cyclic variation. This …
Automated Refactoring Of Legacy Java Software To Enumerated Types, Raffi T. Khatchadourian, Jason Sawin, Atanas Rountev
Automated Refactoring Of Legacy Java Software To Enumerated Types, Raffi T. Khatchadourian, Jason Sawin, Atanas Rountev
Publications and Research
Modern Java languages introduce several new features that offer significant improvements over older Java technology. In this article we consider the new enum construct, which provides language support for enumerated types. Prior to recent Java languages, programmers needed to employ various patterns (e.g., the weak enum pattern) to compensate for the absence of enumerated types in Java. Unfortunately, these compensation patterns lack several highly-desirable properties of the enum construct, most notably, type safety. We present a novel fully-automated approach for transforming legacy Java code to use the new enumeration construct. This semantics-preserving approach increases type safety, produces code that is …
Rely-Guarantee Approach To Reasoning About Aspect-Oriented Programs, Raffi T. Khatchadourian, Neelam Soundarajan
Rely-Guarantee Approach To Reasoning About Aspect-Oriented Programs, Raffi T. Khatchadourian, Neelam Soundarajan
Publications and Research
Over the last few years, the question of reasoning about aspect-oriented programs has been addressed by a number of authors. In this paper, we present a rely-guarantee approach to such reasoning. The rely-guarantee approach has proven extremely successful in reasoning about concurrent and distributed programs. We show that some of the key problems encountered in reasoning about aspect-oriented programs are similar to those encountered in reasoning about concurrent programs; and that the rely-guarantee approach, appropriately modified, helps address these problems. We illustrate our approach with a simple example.
The Impact Of Receiver Aperture Design And Telescope Properties On Lidar Signal-To-Noise Ratio Improvements, Yasser Hassebo, Khaled El Sayed
The Impact Of Receiver Aperture Design And Telescope Properties On Lidar Signal-To-Noise Ratio Improvements, Yasser Hassebo, Khaled El Sayed
Publications and Research
Range and sensitivities of lidar measurements in daylight are limited by sky background noise power (BGP). This is particularly important for Raman lidar techniques where the Raman backscattered signal is relatively weak. This often restricts Raman lidar measurements to nighttime where BGP is absent. The background noise elimination is particularly important in daytime measurements in case where full overlap between laser beam and receiver telescope field-of-view (FOV) is necessary. Results of numerical simulations for a vertically pointing Lidar show that significant improvements in Lidar signal to noise ratio (SNR) can be obtained, by minimizing the detected sky BGP. This can …
Tr-2007001: On Developing User Interfaces For Children In Educational Virtual Reality Environments, Lori Scarlatos, Rebecca Friedman
Tr-2007001: On Developing User Interfaces For Children In Educational Virtual Reality Environments, Lori Scarlatos, Rebecca Friedman
Computer Science Technical Reports
No abstract provided.
Tr-2007004: Additive Preconditioning, Eigenspaces, And The Inverse Iteration, Victor Y. Pan, Xiaodong Yan
Tr-2007004: Additive Preconditioning, Eigenspaces, And The Inverse Iteration, Victor Y. Pan, Xiaodong Yan
Computer Science Technical Reports
No abstract provided.
Tr-2007006: Realizing Substitution Instances Of Modal Theorems, Melvin Fitting
Tr-2007006: Realizing Substitution Instances Of Modal Theorems, Melvin Fitting
Computer Science Technical Reports
No abstract provided.