Functional form & transport infrastructure, supply and demand

功能形式

• 批准号: 5358-2006
• 负责人: Gaudry, Marc
• 金额: $ 1.82万
• 依托单位: Université de Montréal
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=362189
• 关键词: Functional; form; transport; infrastructure; supply

FUNCTIONAL FORM AND TRANSPORT INFRASTRUCTURE AND DEMAND In transport planning, a number of questions arise that require the use of models, because models do better than our intuition at explaining and forecasting outcomes.To establish links between such outcomes and their determinants, relationships are postulated and the existence, direction and size of linkages is tested. This project deals with 3 aspects of these statistical linkage techniques within transport systems. THEORY. We focus on the way in which statistical relationships cannot be established independently from the mathematical form defining them. We work on form and linkage because they have to be studied and established jointly. TOOL DEVELOPMENT. In many areas of applied engineering, the size of samples is increasing. This informational drift, or sophistication factor, requires the adaptation of computer codes designed for more limited databases. Such adaptation of tools can make large samples of daily relevance. APPLICATION. These approaches, both theoretical and tool-based, are applicable to the components of transport system. Here we focus on demand, supply, and accident performance components, as we have done previously. But we extend applications to infrastructure durability matters arising: (i) from the damages caused by vehicles axles (e.g., trains and trucks) of varying weights to infrastructure; (ii) or from the degradation of concrete exposed to aggressive chemical environments. In the latter case, use of probabilistic methods is relatively recent and presents new challenges to the establishment of mutivariate statistical causality and of its form.

功能形式和交通基础设施与需求在交通规划中，出现了许多需要使用模型的问题，因为模型在解释和预测结果方面比我们的直觉更好。为了在这些结果及其决定因素之间建立联系，需要假设关系，并测试联系的存在、方向和大小。本项目涉及运输系统内这些统计联系技术的三个方面。理论我们专注于统计关系不能独立于定义它们的数学形式而建立的方式。我们致力于形式和联系，因为它们必须共同研究和建立。工具开发。在应用工程的许多领域，样本的大小正在增加。这种信息漂移，或复杂因素，需要适应为更有限的数据库设计的计算机代码。对工具的这种调整可以制作大量日常相关的样本。应用程序.这些方法，理论和工具为基础的，适用于交通系统的组成部分。在这里，我们重点关注需求、供应和事故性能组件，正如我们之前所做的那样。但我们将应用扩展到基础设施耐久性问题：（i）车辆车轴造成的损坏（例如，火车和卡车）的不同重量的基础设施;（ii）或暴露于腐蚀性化学环境的混凝土降解。在后一种情况下，概率方法的使用是相对较新的，并提出了新的挑战，建立多元统计因果关系及其形式。