Filters: Collection: "ir_uspace"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 201 |
 |
Beckerle, Mary C. | Mathematical modeling of the dynamic mechanical behavior of neighboring sarcomeres in actin stress fibers | Actin stress fibers (SFs) in live cells consist of series of dynamic individual sarcomeric units. Within a group of consecutive SF sarcomeres, individual sarcomeres can spontaneously shorten or lengthen without changing the overall length of this group, but the underlying mechanism is unclear. We us... | 2014-01-01 | |
| 202 |
 |
Parker, Steven G. | Memory sharing for interactive ray tracing on clusters | We present recent results in the application of distributed shared memory to image parallel ray tracing on clusters. Image parallel rendering is traditionally limited to scenes that are small enough to be replicated in the memory of each node, because any processor may require access to any piece o... | Ray tracing; Out-of-core rendering; Distributed shared memory; Cache miss reduction; Parallel rendering | 2005-02 |
| 203 |
 |
Gopalakrishnan, Ganesh | Precision on demand: an improvement in probabilistic hashing | In explicit state (enumerative) model checking, state vectors are often represented in a compressed form in order to reduce storage needs, typically employing fingerprints, bithashes, or state signatures. When using this kind of techniques, it could happen that the compressed image of a nonvisite... | Probabilistic hashing; Model checking | 2007 |
| 204 |
 |
Zhdanov, Michael | Quasi-analytical boundary condition for three-dimensional finite difference electromagnetic modeling | Numerical modeling of the quasi-static electromagnetic (EM) field in the frequency domain in a three-dimensional (3-D) inhomogeneous medium is a very challenging problem in computational physics. We present a new approach to the finite difference (FD) solution of this problem. The FD discretization ... | 2004-01-01 | |
| 205 |
 |
Freire, Juliana; Silva, Claudio T. | Querying and creating visualizations by analogy | While there have been advances in visualization systems, particularly in multi-view visualizations and visual exploration, the process of building visualizations remains a major bottleneck in data exploration. We show that provenance metadata collected during the creation of pipelines can be reused ... | Provenance; VisTrails; Pipelines; Query-by-example | 2007-11 |
| 206 |
 |
Henderson, Thomas C.; McMurtry, Patrick; Smith, Philip J.; Voth, Gregory Alan; Wight, Charles Albert; Pershing, David W. | Simulating accidental fires and explosions | The Center for the Simulation of Accidental Fires and Explosions at the University of Utah focuses on providing state-of-the-art, science-based tools for the numerical simulation of accidental fires and explosions, especially in the context of handling and storing highly flammable materials. | Center for the Simulation of Accidental Fires and Explosions; PBX9501; HMX | 2000 |
| 207 |
 |
Pascucci, Valerio | Topological analysis and visualization of cyclical behavior in memory reference traces | We demonstrate the application of topological analysis techniques to the rather unexpected domain of software visualization. We collect a memory reference trace from a running program, recasting the linear flow of trace records as a high-dimensional point cloud in a metric space. We use topological ... | 2012-01-01 | |
| 208 |
 |
Freire, Juliana; Silva, Claudio T. | VisComplete: automating suggestions for visualization pipelines | Building visualization and analysis pipelines is a large hurdle in the adoption of visualization and workflow systems by domain scientists. In this paper, we propose techniques to help users construct pipelines by consensus-automatically suggesting completions based on a database of previously creat... | VisComplete; Workflows; Auto completion; Visualization pipelines | 2008-11 |
| 209 |
 |
Freire, Juliana; Silva, Claudio T. | VisMashup: streamlining the creation of custom visualization applications | Visualization is essential for understanding the increasing volumes of digital data. However, the process required to create insightful visualizations is involved and time consuming. Although several visualization tools are available, including tools with sophisticated visual interfaces, they are o... | VisMashup; Dataflow; Visualization systems; Mashups; Medleys | 2009-11 |
| 210 |
 |
Gerig, Guido | White matter microstructure and atypical visual orienting in 7 month-olds at risk for autism | Objective: The authors sought to determine whether specific patterns of oculo-motor functioning and visual orientingcharacterize 7-month-old infants who later meet criteria for an autism spectrum disorder (ASD) and to identify the neural correlates of these behaviors. Method:Data were collected from... | 2013-01-01 | |
| 211 |
 |
Harris, Michael D. | Correlations between the alpha angle and femoral head asphericity: Implications and recommendations for the diagnosis of cam femoroacetabular impingement | Objective: To determine the strength of common radiographic and radial CT views for measuring true femoral head asphericity. Patients and Methods: In 15 patients with cam femoroacetabular impingement (FAI) and 15 controls, alpha angles were measured by two observers using radial CT (0º, 30º, 60º,... | 2014-01-01 | |
| 212 |
 |
Hansen, Charles D.; Wald, Ingo | Interactive isosurface ray tracing of time-varying tetrahedral volumes | Abstract- We describe a system for interactively rendering isosurfaces of tetrahedral finite-element scalar fields using coherent ray tracing techniques on the CPU. By employing state-of-the art methods in polygonal ray tracing, namely aggressive packet/frustum traversal of a bounding volume hierarc... | 2007-11 | |
| 213 |
 |
Hansen, Charles D. | Model for volume lighting and modeling | Abstract-Direct volume rendering is a commonly used technique in visualization applications. Many of these applications require sophisticated shading models to capture subtle lighting effects and characteristics of volumetric data and materials. For many volumes, homogeneous regions pose problems f... | 2003-04 | |
| 214 |
 |
Gerig, Guido | Multi-object analysis of volume, pose, and shape using statistical discrimination | One goal of statistical shape analysis is the discrimination between two populations of objects. Whereas traditional shape analysis was mostly concerned with single objects, analysis of multi-object complexes presents new challenges related to alignment and pose. In this paper, we present a methodol... | 2010-01-01 | |
| 215 |
 |
Gerig, Guido | Prenatal mild ventriculomegaly predicts abnormal development of the neonatal brain | Background: Many psychiatric and neurodevelopmental disorders are associated with mild enlargement of the lateral ventricles thought to have origins in prenatal brain development. Little is known about development of the lateral ventricles and the relationship of prenatal lateral ventricle enlargeme... | 2008-01-01 | |
| 216 |
 |
Tasdizen, Tolga | Principal neighborhood dictionaries for nonlocal means image denoising | We present an in-depth analysis of a variation of the nonlocal means (NLM) image denoising algorithm that uses principal component analysis (PCA) to achieve a higher accuracy while reducing computational load. Image neighborhood vectors are first projected onto a lower dimensional subspace using PC... | 2009 | |
| 217 |
 |
Tasdizen, Tolga | Serial section registration of axonal confocal microscopy datasets for long-range neural circuit reconstruction | In the context of long-range digital neural circuit reconstruction, this paper investigates an approach for registering axons across histological serial sections. Tracing distinctly labeled axons over large distances allows neuroscientists to study very explicit relationships between the brain's com... | 2012-01-01 | |
| 218 |
 |
Pascucci, Valerio | Visualizing network traffic to understand the performance of massively parallel simulations | The performance of massively parallel applications is often heavily impacted by the cost of communication among compute nodes. However, determining how to best use the network is a formidable task, made challenging by the ever increasing size and complexity of modern supercomputers. This paper appli... | 2012-01-01 | |
| 219 |
 |
Parker, Steven G. | Survey of the Itanium architecture from a programmer's perspective | The Itanium family of processors represents Intel;s foray into the world of Explicitly Parallel Instruction Computing and 64-bit system design. This survey contains an introduction to the Itanium architecture and instruction set, as well as some of the available implementations. Taking a programmer'... | Itanium; Instruction sets | 2003 |
| 220 |
 |
Cohen, Elaine | A triangulation-invariant method for anisotropic geodesic map computation on surface meshes | This paper addresses the problem of computing the geodesic distance map from a given set of source vertices to all other vertices on a surface mesh using an anisotropic distance metric. Formulating this problem as an equivalent control theoretic problem with Hamilton-Jacobi-Bellman partial different... | 2012-01-01 | |
| 221 |
 |
Gerig, Guido | Efficient probabilistic and geometric anatomical mapping using particle mesh approximation on GPUs | Deformable image registration in the presence of considerable contrast differences and large size and shape changes presents significant research challenges. First, it requires a robust registration framework that does not depend on intensity measurements and can handle large nonlinear shape variati... | 2011-01-01 | |
| 222 |
 |
Kirby, Robert Michael II | ElVis: A system for the accurate and interactive visualization of high-order finite element solutions | This paper presents the Element Visualizer (ElVis), a new, open-source scientific visualization system for use with high order finite element solutions to PDEs in three dimensions. This system is designed to minimize visualization errors of these types of fields by querying the underlying finite ele... | 2012-01-01 | |
| 223 |
 |
Awate, Suyash P.; Whitaker, Ross T. | Image denoising with unsupervised, information-theoretic, adaptive filtering | The problem of denoising images is one of the most important and widely studied problems in image processing and computer vision. Various image filtering strategies based on linear systems, statistics, information theory, and variational calculus, have been effective, but invariably make strong a... | Image denoising | 2004 |
| 224 |
 |
Awate, Suyash Prakash | Multiatlas segmentation as nonparametric regression | This paper proposes a novel theoretical framework to model and analyze the statistical characteristics of a wide range of segmentation methods that incorporate a database of label maps or atlases; such methods are termed as label fusion or multiatlas segmentation.We model these multiatlas segmentati... | 2014-01-01 | |
| 225 |
 |
Pascucci, Valerio | Characterization and modeling of PIDX parallel I/O for performance optimization | Parallel I/O library performance can vary greatly in re- sponse to user-tunable parameter values such as aggregator count, file count, and aggregation strategy. Unfortunately, manual selection of these values is time consuming and dependent on characteristics of the target machine, the underlying fi... | 2013-01-01 |