ITR: DHARMA: Domain-Specific Metaware for Hydrologic Applications

ITR：DHARMA：水文应用的特定领域元软件

• 批准号: 0082667
• 负责人: Daniel Andresen
• 金额: $ 49.86万
• 依托单位: Kansas State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-09-01 至 2005-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0082667&HistoricalAwards=false
• 关键词: ITR; DHARMA; Domain; Specific; Metaware

The DHARMA domain-specific middleware system being developed in this project is intended to allow hydrologic field engineers to address water-management problems, on a scale previously impossible, with sophisticated domain-specific computational management systems. DHARMA is used to provide automatic data acquisition via the Internet; data fusion from online, local, and cached resources; smart caching of intermediate results to allow for reuse in future simulation cycles; and smart scheduling to optimize execution times on metacomputing systems. Our target watershed model, WEPP, is a continuous simulation processed-based model which represents new soil erosion prediction capabilities. However, it is limited to very small watersheds with current computer technology. A revolutionary change in hydrologic modeling on the watershed scale will be brought about by applying the WEPP model to the 925 square miles Lake Decatur watershed. Currently, all watershed scale hydrologic models are based on empirical relationships. WEPP is the only model which scientifically accounts for soils, sediment transport, runoff, channel flow, plant growth, decomposition, snow melt, freeze-thaw effects, and climatic conditions. Through DHARMA, WEPP is the only model which will provide accurate predictions and evaluate the effects of alternative watershed management practices on watershed water quality.

该项目中正在开发的 DHARMA 特定领域中间件系统旨在使水文现场工程师能够利用复杂的特定领域计算管理系统以前所未有的规模解决水管理问题。 DARMA用于通过互联网提供自动数据采集；来自在线、本地和缓存资源的数据融合；智能缓存中间结果，以便在未来的模拟周期中重复使用；以及智能调度来优化元计算系统上的执行时间。我们的目标流域模型 WEPP 是一个基于连续模拟处理的模型，代表了新的土壤侵蚀预测能力。然而，目前的计算机技术仅限于非常小的分水岭。将WEPP模型应用于925平方英里的迪凯特湖流域，将给流域尺度的水文建模带来革命性的变化。目前，所有流域尺度的水文模型都是基于经验关系。 WEPP 是唯一科学地解释土壤、沉积物输送、径流、河道流量、植物生长、分解、融雪、冻融效应和气候条件的模型。通过 DHARMA，WEPP 是唯一能够提供准确预测并评估替代流域管理实践对流域水质影响的模型。