976 - 1000 of 1,978
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CreatorTitleDescriptionSubjectDate
976 Hansen, Charles D.; Wald, IngoInteractive ray tracing of arbitrary implicits with SIMD interval arithmeticWe present a practical and efficient algorithm for interactively ray tracing arbitrary implicit surfaces. We use interval arithmetic (IA) both for robust root computation and guaranteed detection of topological features. In conjunction with ray tracing, this allows for rendering literally any progr...2007-09
977 Wyman, Chris; Hansen, Charles D.; Shirley, Peter S.Interactive raytraced causticsIn computer graphics, bright patterns of light focused onto matte surfaces are called ?caustics?. We present a method for rendering dynamic scenes with moving caustics at interactive rates. This technique requires some simplifying assumptions about caustic behavior allowing us to consider it a lo...Raytraced caustics2003-04-23
978 Hansen, Charles D.Interactive rendering and efficient querying for large multivariate seismic volumes on consumer level PCsWe present a volume visualization method that allows interactive rendering and efficient querying of large multivariate seismic volume data on consumer level PCs. The volume rendering pipeline utilizes a virtual memory structure that supports out-of-core mul- tivariate multi-resolution data and a GP...2013-01-01
979 Johnson, Christopher R.; Parker, Steven G.; Hansen, Charles D.Interactive simulation and visualizationMost of us perform data analysis and visualization only after everything else is finished, which often means that we don't discover errors invalidating the results of our simulation until postprocessing. A better approach would be to improve the integration of simulation and visualization into the...Computational steering; Interactive simulation; Isosurfaces1999
980 Hansen, Charles D.Interactive texture-based volume rendering for large data setsVisualization is an integral part of scientific computation and simulation. State-of-the-art simulations of physical systems can generate terabytes to petabytes of time-varying data where a single time step can contain more than a gigabyte of data per variable. As memory sizes continue to increase, ...Parallel rendering; Volume rendering; TRex2001
981 Hansen, Charles D.Interactive translucent volume rendering and procedural modelingDirect 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 volume metric data and materials. Many common objects and natural phenomena exhibit visual qua...Volume rendering; Volume visualization; Direct volume rendering; Multidimensional transfer functions; Direct manipulation widgets; Graphics hardware2002
982 Hansen, Charles D.; Chien, Chi-BinInteractive visualization tool for multi-channel confocal microscopy data in neurobiology researchConfocal microscopy is widely used in neurobiology for studying the three-dimensional structure of the nervous system. Confocal image data are often multi-channel, with each channel resulting from a different fluorescent dye or fluorescent protein; one channel may have dense data, while another has ...Volume rendering; Zebrafish2009-11
983 Parker, Steven G.; Hansen, Charles D.Interactive volume rendering of large datasets using the silicon graphics Onyx4 visualization systemMany recent approaches to interactive volume rendering have focused on leveraging the power of commodity graphics hardware. Though currently limited to relatively small datasets, these approaches have been overwhelmingly successful. As the size of volumetric datasets continues to grow at a rapid pa...Volume visualization; Onyx4; Interactive volume rendering; Parallel volume rendering; Large datasets; Visualization systems2005
984 Parker, Steven G.; Hansen, Charles D.Interactive volume rendering of large datasets using the silicon graphics Onyx4 visualization systemMany recent approaches to interactive volume rendering have focused on leveraging the power of commodity graphics hardware. Though currently limited to relatively small datasets, these approaches have been overwhelmingly successful. As the size of volumetric datasets continues to grow at a rapid ...Interactive volume; Rendering; Large datasets; Onyx4; Silicon graphics2004-01-27
985 Hansen, Charles D.Interactive volume rendering using multi-dimensional transfer functions and direct manipulation widgetsMost direct volume renderings produced today employ onedimensional transfer functions, which assign color and opacity to the volume based solely on the single scalar quantity which comprises the dataset. Though they have not received widespread attention, multi-dimensional transfer functions are a v...Volume rendering; Volume visualization; Direct volume rendering; Multidimensional transfer functions; Direct manipulation widgets; Graphics hardware2001
986 Hansen, Charles D.Interactive volume rendering using multi-dimensional transfer functions and direct manipulation widgetsMost direct volume renderings produced today employ one-dimensional transfer functions, which assign color and opacity to the volume based solely on the single scalar quantity which comprises the dataset. Though they have not received widespread attention, multi-dimensional transfer functions are a ...Volume rendering; Volume visualization; Direct volume rendering; Multidimensional transfer functions; Direct manipulation widgets; Graphics hardware2001
987 Lefohn, Aaron; Cates, Joshua E.; Whitaker, Ross T.Interactive, GPU-based level sets for 3D brain tumor segmentationWhile level sets have demonstrated a great potential for 3D medical image seg- mentation, their usefulness has been limited by two problems. First, 3D level sets are relatively slow to compute. Second, their formulation usually entails several free parameters which can be very difficult to correc...Level sets; Medical imaging; 3D brain tumor segmentation2003-04-16
988 Balasubramonian, RajeevInterconnect-aware coherence protocols for chip multiprocessorsImprovements in semiconductor technology have made it possible to include multiple processor cores on a single die. Chip Multi-Processors (CMP) are an attractive choice for future billion transistor architectures due to their low design complexity, high clock frequency, and high throughput. In a...Interconnects; Chip multiprocessors; Coherence2006
989 Khan, Faisal HabibInterconnection and optimization issues of multijunction solar cells - A new mitigation approach using switching power convertersA multijunction solar cell can extract higher solar energy compared to a single junction solar cell using the spectrum splitting technique. Extensive research on efficiency enhancement of the solar cells to achieve near theoretical limit is in place. However, there are limited research activities to...2012-01-01
990 Hibler, Michael J.Interface and execution models in the fluke kernelWe have defined and implemented a new kernel API that makes every exported operation either fully interruptible and restartable, thereby appearing atomic to the user. To achieve interruptibility, all possible states in which a thread may become blocked for a "long" time are completely representable ...Fluke kernel; Interruptibility1998
991 Regehr, JohnInterface contracts for TinyOSTinyOS applications are built with software components that communicate through narrow interfaces. Since components enable fine-grained code reuse, this approach has been successful in creating applications that make very efficient use of the limited code and data memory on sensor network nodes. How...2007-01-01
992 Christensen, Douglas A.Interface of forest and agriculture in nonpoint pollution controlManagement practices of agriculture, including conservation and tillage options, recently have received a great deal of attention with respect to their impact upon the environment. Research efforts have focused both on the direct impacts of reduced on-site productivity resulting from the erosion of ...Suspended sediment; Channel erosion; Silviculture1983
993 Stevens, KennethInterfacing synchronous and asynchronous domains for open core protocolIntellectual property (IP) blocks are connected in a system on chip using a bus or network-on-chip (NoC). IP reuse is facilitated by the modularity that results when using common interfaces between the IP cores and the bus or NoC. This paper investigates and implements several versions of one of the...2014-01-01
994 Myers, Chris J.Interfacing synchronous and asynchronous modules within a high-speed pipelineAbstract-This paper describes a new technique for integrating asynchronous modules within a high-speed synchronous pipeline. Our design eliminates potential metastability problems by using a clock generated by a stoppable ring oscillator, which is capable of driving the large clock load found in pre...2000
995 Myers, Chris J.Interfacing synchronous and asynchronous modules within a high-speed pipeline*This paper describes a new technique for integrating asynchronous modules within CI high-speed synchronous pipeline. Our design eliminates potential metastability problems by using Q clock generated by Q stoppable rang oscillator, which is capable of driving the large clock load found in present d...1997
996 Balasubramonian, RajeevInterference aware cache designs for operating system executionLarge-scale chip multiprocessors will likely be heterogeneous. It has been suggested by several groups that it may be worthwhile to implement some cores that are specially tuned to execute common code patterns. One such common application that will execute on all future processors is of course the ...Interference aware; Cache designs; Off-loading2009
997 Furse, Cynthia M.Intergrated dual band GSM microstrip monopole using GA and FDTDThe genetic algorithm (GA) has been used extensively by the electromagnetic community [1]. Much of that work has been to develop compact broad and multiband antennas. Microstrip antennas have been optimized with the GA for polarized, dual band operation [2]. Building solid microstrip structures with...2005-01-01
998 Chaudhuri, Reaz A.Interlaminar shear stresses around an internal part-through hole in a stretched laminated composite plateThe equilibrium/compatibility method, which is a semi-analytical post-processing method, is employed for computation of hitherto unavailable through-thickness variation of interlaminar (transverse) shear stresses in the vicinity of the bi-layer interface circumferential re-entrant corner line of an...2010-03
999 Sobh, Tarek M.; Henderson, Thomas C.Intermediate results in active inspection and reverse engineeringIn previous work [18], we have proposed a new design for inspection and reverse engineering environments. We have investigated the use of the dynamic recursive context of discrete event dynamic systems (DRFSM DEDS) to guide and control the active exploration and sensing of mechanical parts for indu...Industrial inspection; Discrete event dynamic systems; DRFSM; DEDS1993
1000 Liu, FengInterplay between quantum size effect and strain effect on growth of nanoscale metal thin filmsWe develop a theoretical framework to investigate the interplay between the quantum size effect (QSE) and strain effect on the stability of metal nanofilms. The QSE and strain effect are shown to be coupled through the concept of quantum electronic stress. First-principles calculations reveal large ...2012-01-01
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