Filters: Collection: "ir_uspace"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 151 |
 |
Vardhan, Avantika | Characterizing growth patterns in longitudinal MRI using image contrast | Understanding the growth patterns of the early brain is crucial to the study of neuro-development. In the early stages of brain growth, a rapid sequence of biophysical and chemical processes take place. A crucial component of these processes, known as myelination, consists of the formation of a myel... | 2014-01-01 | |
| 152 |
 |
Berzins, Martin | DAG-based software frameworks for PDEs | The task-based approach to software and parallelism is well-known and has been proposed as a potential candidate, named the silver model, for exas-cale software. This approach is not yet widely used in the large-scale multi-core parallel computing of complex systems of partial differential equations... | 2012-01-01 | |
| 153 |
 |
Henderson, Thomas C. | Explicit and persistent knowledge in engineering drawing analysis | Domain knowledge permeates all aspects of the engineering drawing analysis process, including understanding the physical processes operating on the medium (i.e., paper), the image analysis techniques, and the interpretation semantics of the structural layout and contents of the drawing. Additiona... | Engineering drawing analysis | 2003-10-10 |
| 154 |
 |
Gerig, Guido | Geodesic shape regression in the framework of currents | Shape regression is emerging as an important tool for the statistical analysis of time dependent shapes. In this paper, we develop a new generative model which describes shape change over time, by extending simple linear regression to the space of shapes represented as currents in the large deformat... | 2013-01-01 | |
| 155 |
 |
Hansen, Charles D. | GPUFLIC: interactive and accurate dense visualization of unsteady flows | Abstract The paper presents an efficient and accurate implementation of Unsteady Flow LIC (UFLIC) on the Graphics Processing Unit (GPU). We obtain the same, high quality texture representation of unsteady two-dimensional flows as the original, time-consuming method but leverage the features of today... | 2006 | |
| 156 |
 |
Freire, Juliana; Silva, Claudio T. | Provenance for visualizations: reproducibility and beyond | The demand for the construction of complex visualizations is growing in many disciplines of science, as users are faced with ever increasing volumes of data to analyze. The authors present VisTrails, an open source provenance-management system that provides infrastructure for data exploration and ... | Provenance management; Reproducibility; VisTrails; Pipelines | 2007-09 |
| 157 |
 |
Weinstein, David | Statistical analysis for FEM EEG source localization in realistic head models | Estimating the location and distribution of electric current sources within the brain from electroencephalographic (EEG) recordings is an ill-posed inverse problem. The ill-posed nature of the inverse EEG problem is due to the lack of a unique solution such that different configurations of sources c... | inverse EEG problem; FEM EEG; source localization | 2000 |
| 158 |
 |
Whitaker, Ross T. | Curve boxplot: Generalization of boxplot for ensembles of curves | In simulation science, computational scientists often study the behavior of their simulations by repeated solutions with variations in parameters and/or boundary values or initial conditions. Through such simulation ensembles, one can try to understand or quantify the variability or uncertainty in a... | 2014-01-01 | |
| 159 |
 |
Tasdizen, Tolga; Whitaker, Ross T. | Higher-order nonlinear priors for surface reconstruction | Abstract-For surface reconstruction problems with noisy and incomplete range data, a Bayesian estimation approach can improve the overall quality of the surfaces. The Bayesian approach to surface estimation relies on a likelihood term, which ties the surface estimate to the input data, and the prior... | 2004 | |
| 160 |
 |
Bargteil, Adam Wade | Multiphase flow of immiscible fluids on unstructured moving meshes | In this paper, we present a method for animating multiphase flow of immiscible fluids using unstructured moving meshes. Our underlying discretization is an unstructured tetrahedral mesh, the deformable simplicial complex (DSC), that moves with the flow in a Lagrangian manner. Mesh optimization opera... | 2014-01-01 | |
| 161 |
 |
Freire, Juliana; Silva, Claudio T. | Enabling advanced visualization tools in a web-based simulation monitoring system | Simulations that require massive amounts of computing power and generate tens of terabytes of data are now part of the daily lives of scientists. Analyzing and visualizing the results of these simulations as they are computed can lead not only to early insights but also to useful knowledge that ca... | Isosurfaces; Contour tree; Turbulent combustion; eSimMon | 2009-12 |
| 162 |
 |
Zhdanov, Michael S. | Fast numerical modeling of multitransmitter electromagnetic data using multigrid quasi-linear approximation | Multitransmitter electromagnetic (EM) surveys are widely used in remote-sensing and geophysical exploration. The interpretation of the multitransmitter geophysical data requires numerous three-dimensional (3-D) modelings of the responses of the receivers for different geoelectrical models of comple... | Multitransmitter electromagnetic data; Numerical modeling; Multigrid quasi-linear approximation; Quasilinear approximation; geophysical exploration; 3-D modeling | 2006-06 |
| 163 |
 |
Parker, Steven G. | Memory-savvy distributed interactive ray tracing | Interactive ray tracing in a cluster environment requires paying close attention to the constraints of a loosely coupled distributed system. To render large scenes interactively, memory limits and network latency must be addressed efficiently. In this paper, we improve previous systems by moving to ... | 2004 | |
| 164 |
 |
Henderson, Thomas C. | SLAMBOT: Structural health monitoring robot using lamb waves | We propose the combination of a mobile robot and a computational sensor network approach to perform structural health monitoring of structures. The robot is equipped with piezoelectric sensor actuators capable of sending and receiving ultrasound signals, and explores the surface of a structure to be... | 2014-01-01 | |
| 165 |
 |
Golden, Kenneth M. | Transition in the fractal geometry of Arctic melt ponds | During the Arctic melt season, the sea ice surface undergoes a remarkable transformation from vast expanses of snow covered ice to complex mosaics of ice and melt ponds. Sea ice albedo, a key parameter in climate modeling, is determined by the complex evolution of melt pond configurations. In fact, ... | 2012-01-01 | |
| 166 |
 |
Van Uitert, Robert; Weinstein, David; Johnson, Christopher R. | Volume currents in forward and inverse MEG simulations using realistic head models | Many magnetoencephalography (MEG) forward and inverse simulation models employ spheres, a singular shape which does not require consideration of volume currents. With more realistic, inhomogenous, anisotropic, non-spherical head models, volume currents cannot be ignored. We verify the accuracy of ... | Forward MEG, Inverse MEG, Source localization, Volume currents, Finite element method | 2001 |
| 167 |
 |
Hansen, Charles D.; Whitaker, Ross T. | Streaming narrow-band algorithm: interactive computation and visualization of level sets | Abstract-Deformable isosurfaces, implemented with level-set methods, have demonstrated a great potential in visualization and computer graphics for applications such as segmentation, surface processing, and physically-based modeling. Their usefulness has been limited, however, by their high computa... | 2004-07 | |
| 168 |
 |
Riloff, Ellen M. | Feature subsumption for opinion analysis | Lexical features are key to many approaches to sentiment analysis and opinion detection. A variety of representations have been used, including single words, multi-word Ngrams, phrases, and lexicosyntactic patterns. In this paper, we use a subsumption hierarchy to formally define different types o... | Feature subsumption; Sentiment analysis; Opinion detection; Subsumption hierarchy | 2006 |
| 169 |
 |
Riloff, Ellen M. | Learning domain-specific information extraction patterns from the web | Many information extraction (IE) systems rely on manually annotated training data to learn patterns or rules for extracting information about events. Manually annotating data is expensive, however, and a new data set must be annotated for each domain. So most IE training sets are relatively small. C... | Information extraction; Domain-specific; Annotated training sets; MUC-4 | 2006 |
| 170 |
 |
Smith, Philip J. | Soot in combustion simulations | Soot is the dominant source of radiative heat transfer from most practical flames. A review is presented of historical, empirical modelling approaches for estimating heat flux from fires and flames. These historical methods have drawn on empiricism to address the role of soot while seeking methods f... | Large eddy simulation; LES; Combustion simulation; Radiative heat transfer; Pool fires | 2005 |
| 171 |
 |
DeTar, Carleton | Topological susceptibility with the improved Asqtad action | Chiral perturbation theory predicts that in quantum chromodynamics light dynamical quarks suppress the topological (instanton) susceptibility.We investigate this suppression through direct numerical simulation using the Asqtad improved lattice fermion action. This action holds promise for carrying... | Chiral perturbation; Staggered fermions | 2003-12 |
| 172 |
 |
Gopalakrishnan, Ganesh | Ovis: A framework for visual analysis of ocean forecast ensembles | We present a novel integrated visualization system that enables interactive visual analysis of ensemble simulations of the sea surface height that is used in ocean forecasting. The position of eddies can be derived directly from the sea surface height and our visualization approach enables their int... | 2014-01-01 | |
| 173 |
 |
Hansen, Charles D. | A practical workflow for making anatomical atlases for biological research | An anatomical atlas provides a detailed map for medical and biological studies of anatomy. These atlases are important for understanding normal anatomy and the development and function of structures, and for determining the etiology of congenital abnormalities. Unfortunately, for biologists, generat... | 2012-01-01 | |
| 174 |
 |
Hansen, Charles D. | Cluster-based interactive volume rendering with Simian | Commodity-based computer clusters offer a cost-effective alternative to traditional largescale, tightly coupled computers as a means to provide high-performance computational and visualization services. The Center for the Simulation of Accidental Fires and Explosions (C-SAFE) at the University of... | Volume rendering; Simian | 2003-09-03 |
| 175 |
 |
Seyedhosseini Tarzjani, Seyed Mojtaba | Image segmentation with cascaded hierarchical models and logistic disjunctive normal networks | Contextual information plays an important role in solving vision problems such as image segmentation. However, extracting contextual information and using it in an effective way remains a difficult problem. To address this challenge, we propose a multi-resolution contextual framework, called cascade... | 2013-01-01 |