Impact of gigabit network research on scientific visualization

Networks based on the High Performance Parallel Interface (HIPPI) will become the norm at Los Alamos National Laboratory. The ramification of such a high-speed networking paradigm on scientific visualization are enormous. Not only will scientists have the capability of networked framebuffer animation loops in their offices, but also the partitioning of graphics tasks between MIMD, SIMD, and specialized hardware will be feasible. Of course, as bandwidth increases, the problem size quickly grows to exceed whatever the limits are. For this reason, the investigation of gigabyte networks is currently underway at Los Alamos National Laboratory.     

Performance analysis challenges and framework for high-performance reconfigurable computing

Reconfigurable computing (RC) applications employing both microprocessors and FPGAs have potential for large speedup when compared with traditional (software) parallel applications. However, this potential is marred by the additional complexity of these dual-paradigm systems, making it difficult to identify performance bottlenecks and achieve desired performance. Performance analysis concepts and tools are well researched and widely available for traditional parallel applications but are lacking in RC, despite being of great importance due to the applications’ increased complexity. In this paper, we explore challenges and present new techniques in automated instrumentation, runtime measurement, and visualization of RC application behavior. We also present ideas for integration with conventional performance analysis tools to create a unified tool for RC applications as well as our initial framework for FPGA instrumentation and measurement. Results from a case study are provided using a prototype of this new tool.     

纵向涡作用下窄缝矩形通道外壁温可视化研究

在窄缝矩形通道内设置4对周期性分布的矩形块纵向涡(LV)发生器作为强化换热措施,应用红外热成像测温技术对该通道加热板外壁面温度场进行可视化测量.测量结果表明,LV以一定作用距离和相对强度对温度场进行重构,形成了窄缝矩形通道内加热板外壁温交替下降和上升的类周期性变化过程,提高了通道内整体对流传热能力.     

基于UML和ASP的研究生信息管理系统设计与实现

采用统一建模语言UML,对研究生信息管理系统的结构关系建模,阐述了UML在系统的可视化建模机制,从不同层面给出了系统的需求分析及系统设计的整个过程。利用ASP技术实现开放式研究生管理系统,可以实现教师异地管理学生信息,提高学生管理工作的效率和灵活性。     

基于数据场可视化技术的石油勘探应用研究

石油勘探开发是石油工业的重要部分,直接决定了我国的石油产量,在石油勘探开发过程中,会采集到大量的数据,形成三雏数据场。本文是将三维数据场可视化技术应用到石油勘探开发过程中的地质建模和数值模拟之中,达到了较好的效果。直观、准确地再现了油藏分布以及石油开发过程中的参数的动态变化,辅助相关领域工作人员的分析、设计,具有广泛应用前景。     

Visualization experience and related process modeling

The visualization process is a transformation of information content into knowledge via a visual representation. Visualization experience, proposed herein, reflects human sensations arising during the visualization process. It provides a basis in which to objectively measure and evaluate human participation in the visualization process; and thereby provides methods of control. Visualization experience modeling allows leveraging on the natural environment to augment understanding, therefore improve decision making. The application emphasis in this paper is on the theoretical development of visualization experience in the visualization process as applied to Ambient Assisted Living and Clinical Decision Support Systems.     

大型矿井主扇现场试验和进气流场的可视化研究

详细地叙述了在压入式通风系统条件下，对２Ｋ５８－Ｎｏ－３２主扇进行的现场试验和国内首次大型通风机进气流场的可视化研究。研究表明：不可低估进气流场和环境对通风机性能的影响。同时证明了可视化是风机系统节能领域中行之有效的技术之一。     

基于Java3D的空间关联规则可视化原理与实现

空间数据挖掘可视化是空间数据挖掘研究的一个重要方面。可视化技术充分利用了图形和图像的表达能力以及人对于色彩和空间的敏锐的感知能力,使人机有机地融合在一起。本文在简述空间关联规则可视化基本需求的基础上,提出了空间关联规则可视化的一般方法,并进行用Java3D技术开发空间关联规则可视化工具的应用研究。重点在于分析利用Java3D技术进行空间关联规则可视化的基本原理和方法,并给出核心部分流程。最后将该技术应用于两个具体实例中,并给出实现的空间关联规则可视化界面。     

复杂目标近场电磁散射的可视化计算方法

首次介绍了复杂目标近场散射计算的可视化方法。采用非均匀有理Ｂ样条曲面（ＮＵＲＢＳ）精确构造任意形状散射体，结合几何体近场透视变换和Ｚ－Ｂｕｆｆｅｒ技术实现了基于Ｗｉｎｄｏｗｓ平台的近场散射计算。提出广义雷达散射截面的概念并给出的若干算例。该方法充分利用了计算机３Ｄ图形设备的几何运算能力，运算速度快，严谨高，可扩展性好。