CDI-Type I: Fundamental Terrain Representations and Operations

CDI-I 型：基本地形表示和操作

• 批准号: 0835762
• 负责人: Barbara Cutler
• 金额: $ 67万
• 依托单位: Rensselaer Polytechnic Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-15 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0835762&HistoricalAwards=false
• 关键词: CDI; Type; Fundamental; Terrain; Representations

The project, Fundamental Terrain Representations and Operations, unifies the fields of computational geometry, computer graphics, and civil engineering hydrology, resulting in a transformational ability to predict how erosion occurs, specifically in levee failure by overtopping, and, after a failure, to reverse-simulate what happened.This enables more efficient levee designs and so reduces the frequency and cost of levee failures in the United States. That will result in reduced flood damage in the US, which cost $50,000,000,000 in the 1990s, thereby saving money and lives. This project will continue and expand the PIs' strong track record of involving undergraduate students in research, hosting elementary and high school students and international visitors in their labs, and of involving women and other underrepresented groups. The vehicles include the Research Experience for Undergrads and the Research Experience for Teachers programs, and RPI's own PREFACE program, which hosts high school student from underrepresented groups for two weeks in the summer. It will also expand continuing joint research with a Brazilian collaborator.The project's goals are: a new representation for volumetric terrain, a.k.a. soil, that respects the geophysics of how surface water flows(hydrology) formed it, a better modeling of local erosion in terrain and earthen structures such as levees, an experimental plan for validation in Rensselaer Polytechnic Institute's geotechnical centrifuge, a predictive reverse simulation of earthen levee erosion, a visualization of non-homogeneous terrain erosion, an out-of-core parallel simulation on large terrain datasets, and a collaboration in Brazil. Therefore the accumulated data on past levee erosion will be transformed into knowledge about future erosion. One intellectually novel aspect of this research will be computational geometry representations of volumetric terrain in which the mathematics more closely aligns with the physics.It will not enforce a nonphysical continuity of elevation - cliffs are important in the real world. Even during progressive transmission, it will be hydrologically correct, with few or no interior local minima.Since erosion is not linear (gulleys don't cross each other and their elevations don't `add'), such a representation cannot be linear, and so innovative and compute-intensive techniques are required.

The project, Fundamental Terrain Representations and Operations, unifies the fields of computational geometry, computer graphics, and civil engineering hydrology, resulting in a transformational ability to predict how erosion occurs, specifically in levee failure by overtopping, and, after a failure, to reverse-simulate what happened.This enables more efficient levee designs and so reduces the frequency and cost of levee failures in the United States. 这将导致美国的洪水损失减少，在1990年代，洪水损失的费用为5万美元，从而节省了金钱和生命。 该项目将继续并扩大PIS的良好记录，即让本科生参与研究，在实验室中招募小学和高中生以及国际访客，并参与妇女和其他代表性不足的群体。 这些车辆包括针对本科生的研究经验和教师计划的研究经验，以及RPI自己的序言计划，该计划在夏季将来自人数不足的小组的高中生主持了两个星期。 It will also expand continuing joint research with a Brazilian collaborator.The project's goals are: a new representation for volumetric terrain, a.k.a. soil, that respects the geophysics of how surface water flows(hydrology) formed it, a better modeling of local erosion in terrain and earthen structures such as levees, an experimental plan for validation in Rensselaer Polytechnic Institute's geotechnical centrifuge,土堤侵蚀的预测反向模拟，非殖民地形侵蚀的可视化，大型地形数据集上的核心平行模拟以及巴西的协作。 因此，有关过去堤防侵蚀的累积数据将转变为有关未来侵蚀的知识。 这项研究的一个智力新颖的方面将是体积地形的计算几何形状表示，其中数学与物理学更紧密地结合。 即使在进行性传播过程中，它在水文上也是正确的，而局部最小的最小值也不是线性的（Gulleys彼此之间不相互交叉，并且其高程不会“添加”），因此这种表示不能是线性的，因此需要创新和计算的技术。