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首頁> 外文學位 >Incorporating highway asset life expectancy into long-term fiscal planning - a risk-based, probabilistic approach.
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Incorporating highway asset life expectancy into long-term fiscal planning - a risk-based, probabilistic approach.

機譯:將公路資產預期壽命納入長期財務計劃中-一種基于風險的概率方法。

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摘要

vital aspect of cost-effective highway asset management is the estimation of asset life expectancies. Using reliable estimates of asset service life, agencies can modify replacement intervals, plan physical and financial work, and identify those designs that are best suited to a region. To aid agencies in these tasks, this dissertation presents a proposed general, overarching framework for asset life estimation. Also, while the typical practice in planning is to apply life estimates deterministically, this dissertation demonstrates, with evidence, the benefits of using risk-based, probabilistic approaches. In demonstrating the developed methodologies, life expectancy models were calibrated for a number of asset classes and sensitivity and risk analyses were conducted to quantify the uncertainties associated with asset life. Further, the propagation of such uncertainty was quantified through its consequences on long-term, capital needs assessments. It was determined that in order to mitigate the uncertainty associated with Indiana's bridge replacement needs over a 15-year planning horizon, a contingency amount of
機譯:具有成本效益的高速公路資產管理的重要方面是資產壽命的估計。通過使用可靠的資產使用壽命估算,代理商可以修改更換間隔,計劃物理和財務工作,并確定最適合某個地區(qū)的設計。為了幫助機構完成這些任務,本文提出了一個建議的,總體的資產壽命估計總體框架。同樣,盡管計劃中的典型做法是確定性地應用壽命估計,但本文以證據證明了使用基于風險的概率方法的好處。在演示已開發(fā)的方法時,針對多種資產類別對預期壽命模型進行了校準,并進行了敏感性和風險分析以量化與資產壽命相關的不確定性。此外,通過不確定性對長期資本需求評估的影響來量化這種不確定性的傳播。為了減輕印第安納州橋梁更換需求在15年規(guī)劃期內的不確定性,已確定應急費用為

著錄項

  • 作者

    Ford, Kevin Matthew.;

  • 作者單位

    Purdue University.;

  • 授予單位 Purdue University.;
  • 學科 Engineering Civil.;Urban and Regional Planning.;Transportation.
  • 學位 Ph.D.
  • 年度 2011
  • 頁碼 287 p.
  • 總頁數 287
  • 原文格式 PDF
  • 正文語種 eng
  • 中圖分類
  • 關鍵詞

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