2009 DoD High Performance Computing Modernization Program Users Group Conference最新文献

Stimulation of Live C4ISR Experimentation Environments by Using HPC Simulation 基于HPC仿真的实时C4ISR实验环境仿真

2009 DoD High Performance Computing Modernization Program Users Group Conference Pub Date : 2009-06-15 DOI: 10.1109/HPCMP-UGC.2009.54

Jason Santiago

引用次数: 4

Signature Evaluation for Thermal Infrared Countermine and IED Detection Systems: Large-Area Simulations in an Operational Computing Environment 热红外对抗和IED探测系统的特征评估:在操作计算环境中的大面积模拟

2009 DoD High Performance Computing Modernization Program Users Group Conference Pub Date : 2009-06-15 DOI: 10.1109/HPCMP-UGC.2009.53

J. Peters, S. Howington, O. Eslinger, J. Ballard, J. Fairley, R. Goodson, Virginia Carpenter

引用次数: 1

Radar Signature Prediction for Sensing-through-the-Wall by Xpatch and AFDTD 基于Xpatch和AFDTD的穿墙探测雷达特征预测

2009 DoD High Performance Computing Modernization Program Users Group Conference Pub Date : 2009-06-15 DOI: 10.1109/HPCMP-UGC.2009.55

T. Dogaru, A. Sullivan, C. Kenyon, C. Le

引用次数: 7

Simulation of Mach 3 Cylinder Flow Using Kinetic and Continuum Solvers 利用动力学和连续介质求解器模拟马赫数3的圆柱流动

2009 DoD High Performance Computing Modernization Program Users Group Conference Pub Date : 2009-06-15 DOI: 10.1109/HPCMP-UGC.2009.21

S. Dinavahi, E. Josyula

引用次数: 2

A Java-Based Interface for Creating and Mining RDF Database 用于创建和挖掘RDF数据库的基于java的接口

2009 DoD High Performance Computing Modernization Program Users Group Conference Pub Date : 2009-06-15 DOI: 10.1109/HPCMP-UGC.2009.76

S. Samsi, B. Guilfoos, H. Smith, J. Unpingco, A. Chalker

{"title":"A Java-Based Interface for Creating and Mining RDF Database","authors":"S. Samsi, B. Guilfoos, H. Smith, J. Unpingco, A. Chalker","doi":"10.1109/HPCMP-UGC.2009.76","DOIUrl":"https://doi.org/10.1109/HPCMP-UGC.2009.76","url":null,"abstract":"The Resource Description Framework (RDF) language can be used to describe data and the relationships between different objects in the data. As larger amounts of data are generated, many applications in the Signal and Image Processing areas such as radar image processing, electromagnetics, etc., present users with the challenge of representing and mining the data. In many cases, this data resides on secure Department of Defense Supercomputing Resource Centers (DSRC). Our earlier work developed a Web interface for querying and searching this RDF data and also allowed users to transfer this data between DSRCs. In this paper, we describe the architecture improvements in the Web interface that make the application easier to deploy, maintain, and modify. The entire application has beenrefactored in an object-oriented manner, making it easier to customize and re-use parts of the application in other Java based tools. Additionally, we have developed a Java-based tool for creating the metadata associated with existing data. The RDF creation tool makes it easy for users to create RDF databases without the need to learn the intricacies of the RDF language. This new tool can also be integrated into the Web application thus allowing users to generate RDF databases for new data. Pilot studies were also conducted to enable the use of mpscp for high bandwidth data transfers, with promising results.","PeriodicalId":268639,"journal":{"name":"2009 DoD High Performance Computing Modernization Program Users Group Conference","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115543455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vortex Detection Through the Visualization Toolkit 通过可视化工具箱进行漩涡检测

2009 DoD High Performance Computing Modernization Program Users Group Conference Pub Date : 2009-06-15 DOI: 10.1109/HPCMP-UGC.2009.66

J. V. D. Zwaag, R. Vickery, R. Moorhead

引用次数: 2

Predictions of Properties of Energetic Materials from First Principles 从第一原理预测含能物质的性质

2009 DoD High Performance Computing Modernization Program Users Group Conference Pub Date : 2009-06-15 DOI: 10.1109/HPCMP-UGC.2009.38

R. Podeszwa, B. Rice, Decarlos Taylor, F. Rob, K. Szalewicz

{"title":"Predictions of Properties of Energetic Materials from First Principles","authors":"R. Podeszwa, B. Rice, Decarlos Taylor, F. Rob, K. Szalewicz","doi":"10.1109/HPCMP-UGC.2009.38","DOIUrl":"https://doi.org/10.1109/HPCMP-UGC.2009.38","url":null,"abstract":"Properties of solid energetic materials depend on a large extent on their crystal structure. Thus, the structure determines suitability of a given compound for defense purposes. Since there are no simple methods to predict crystal structures, such structures become known only after a given material has been synthesized and crystallized. The structures can be predicted from quantum mechanical calculations, but until recently the reliability of such predictions was very low. This situation has changed with the development of symmetryadapted perturbation theory (SAPT) based on densityfunctional theory (DFT) description of monomers, an approach known as SAPT(DFT). The SAPT(DFT) potentials for dimers of energetic molecules were applied to predictions of properties of crystals of such molecules in a combined molecular packing, lattice minimization, and molecular dynamics simulations study. The properties of the cyclotrimethylene trinitramine (RDX) crystal predicted from first principles are in excellent agreement with experiment and the predictions are even somewhat better than achieved by empirical potentials fitted to the crystal experimental data. A similar work on the 1,1-diamino-2,2-dinitroethylene (FOX-7) crystal is in progress.","PeriodicalId":268639,"journal":{"name":"2009 DoD High Performance Computing Modernization Program Users Group Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129997013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evolving Image Noise Filters through Genetic Programming 通过遗传规划进化图像噪声滤波器

2009 DoD High Performance Computing Modernization Program Users Group Conference Pub Date : 2009-06-15 DOI: 10.1109/HPCMP-UGC.2009.50

E. R. Banks, Paul Agarwal, Marshall McBride, Claudette Owens

{"title":"Evolving Image Noise Filters through Genetic Programming","authors":"E. R. Banks, Paul Agarwal, Marshall McBride, Claudette Owens","doi":"10.1109/HPCMP-UGC.2009.50","DOIUrl":"https://doi.org/10.1109/HPCMP-UGC.2009.50","url":null,"abstract":"A form of Evolutionary Computation (EC) called Genetic Programming (GP) was used to automatically discover sequences of image noise filters to remove two types of image noise and a type of communications noise associated with a remotely sensed imagery. Sensor noise was modeled by the addition of salt-and-pepper and grayscale noise to the image. Communication noise was modeled by inserting a series of blank pixels in selected image rows to replicate dropped pixel segments occurring during communication interruptions of sequential uncompressed image information. A known image was used for training the evolver. Heavy amounts of noise were added to the known image, and a filter was evolved. (The filtered image was compared to the original with the average image-toimage pixel error establishing the fitness function.). The evolved filter derived for the noisy image was then applied to never-before-seen imagery affected by similar noise conditions to judge the universal applicability of the evolved GP filter. Examples of all described images are included in the presentation. A variety of image filter primitives were used in this experiment. The evolved sequences of primitives were each then sequentially applied to produce the final filtered image. These filters were evolved over a typical run length of one week each on a small Linux cluster. Once evolved, the filters were then transported to a PC for application to the never-before-seen images, using an “evolve-once, apply-many-times” approach. The results of this image filtering experiment were quite dramatic.","PeriodicalId":268639,"journal":{"name":"2009 DoD High Performance Computing Modernization Program Users Group Conference","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127704232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

New Prospects for High Performance SONAR, Chemical Sensor, and Communication Device Materials 高性能声纳、化学传感器和通信器件材料的新前景

2009 DoD High Performance Computing Modernization Program Users Group Conference Pub Date : 2009-06-15 DOI: 10.1109/HPCMP-UGC.2009.34

T. Qi, S. Levchenko, J. Bennett, I. Grinberg, A. Rappe

引用次数: 4

Numerical Investigation of Three-Dimensional Separation in Internal and External Flows 内外流三维分离的数值研究

2009 DoD High Performance Computing Modernization Program Users Group Conference Pub Date : 2009-06-15 DOI: 10.1109/HPCMP-UGC.2009.19

R. Jacobi, A. Gross, H. Fasel

{"title":"Numerical Investigation of Three-Dimensional Separation in Internal and External Flows","authors":"R. Jacobi, A. Gross, H. Fasel","doi":"10.1109/HPCMP-UGC.2009.19","DOIUrl":"https://doi.org/10.1109/HPCMP-UGC.2009.19","url":null,"abstract":"For Navy relevant geometries, separation of wall bounded flows is a highly complex phenomenon. Because of the relatively high Reynolds numbers involved,separation is always associated with considerable unsteadiness. This unsteadiness is caused by large coherent structures that are a consequence of hydrodynamic instability mechanisms of the mean flow. In addition, due to the shape of underwater vehicles (submarines, torpedoes, low aspect ratio lifting or control surfaces) the separation is three-dimensional (3D). The combination of three-dimensionality and unsteadiness results in a highly complex time-dependent topology of the separated region. In a combined numerical/experimental effort, we are studying laminar separation bubbles in external flows. For these simulations, we employ highly-resolved direct numerical simulations (DNS) to obtain a deeper understanding of the various physical mechanisms governing separation, transition, and reattachment of 3D bubbles. Ultimately, such understanding may pave the way for the development of effective and efficient strategies for preventing separation for practical applications. We are also evaluating hybrid turbulence models for high Reynolds number flows. In particular, we describe DNS, Reynolds-Averaged Navier-Stokes (RANS), and hybrid simulations of a turbulent square duct flow. Based on these simulations we decided on two hybrid strategies for simulating the asymmetric diffuser experiments that were conducted at Stanford University by J. Eaton et al. The first mean flow results look very encouraging. If successful, this research will result in hybrid models that are suitable for a wide variety of flow topologies and Reynolds numbers.","PeriodicalId":268639,"journal":{"name":"2009 DoD High Performance Computing Modernization Program Users Group Conference","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115810908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2