present value criteria 中文意思是什麼
present value criteria
解釋
現值標率-
In view of bearing capacity of the elastoplastic theory analysis, the author made a comparison between the achieved bearing capacity limit load pi / 4 of round base ( space problem ) and the limit load pi / 4 of bar groundwork foundation design ( plane problem ) from soil mechanics at home and abroad as well as foundation criterion, and explained why the value of formula in present design criterion from soil mechanics is inclined to be conservative. in the light of the author ' s many years experience of vibration test on the spot and the research work of relevant projects, the author worked over the dynamic pile testing of the bearing capacity of foundation and batholith, and gathered the parameter of dynamic analysis and testing. the author also talked over the difficult point of pile foundation design criteria in present batholith engineering world, i. e. the confirmation of batholith bearing capacity of pile end, from the following aspects : a ) confirmation of single axis counter - pressure strength of rock in house ; b ) f. e. m calculation of elastoplastic model ; c ) calculation of soil mechanics ; d ) deep well load test
然後，對巖土工程領域至今尚未解決，甚至不為人注意的考慮地基變形的地基承載力問題進行了實用化的探討，提出了考慮地基變形的地基承載力上程計算方法；對基於彈塑性理論分析的地基承載力國內尚未見報道的空間問題得到了圓形基礎（空間問題）的承載力界限荷載p _ （ 1 / 4 ） ，並與國內外土力學專著及地基基礎設計規范中的條形基礎（平面問題）的界限荷載p _ （ 1 / 4 ） ，進行了對比，從而定量上解釋了目前設計規范引用土力學承載力公式值偏於保守的這一情況；根據本文作者多年從事現場地基工程振動試驗及相關課題的研究工作，本文以截頭錐模型模擬地基，對地基（巖基）承載力的動測法進行了研究，為各類地基（包括巖基） ，匯總了動力分析和檢測川的參數：針對日前巖土工程界應用樁基設計規范中的難點? ?樁端巖基承載力的確定問題，從巖石室內單軸抗壓強度確定、基於彈塑性模型的有限單元法計算、土力學計算及深斤載荷試驗四方面進行了深入討論；本文作者根據多年現場載荷試驗的工程實踐，對深井荷試驗裝置的核心部分? ?反力裝置，設計了側壁支撐反力加載系統，該加載系統具有實用、簡便、穩定及安個等優點。 -
Topics to cover include the time value of money, net present value and other investment criteria ; use of discount cash flow for investment decision ; risk and return of investment ; project analysis, corporate financing, capital structure ; financial statement analysis, financial planning ; working capital management ; cash and inventory management ; risk management
涵蓋的主題包括金錢的時間價值，凈現值和其他投資準則；運用現金流量貼現法作投資決策；風險及投資回報，項目分析，合作融資，貨幣結構；財務報表分析，財務計劃；營運資本管理；現金和存貨管理；風險管理。 -
After analyzing state - of - the - art of active and semi - active structural control in the world, the dissertation focus on semi - active structural control based on the magneto - rheological dampers. and a semi - active control method is put forward, which is based on lq ( linear quadratic ) optimum control theory, and imitates the optimum active - control force with bound value to control the structural response. then two structural models " simulation is conducted to compare the effectiveness and usefulness of the semi - active control with the passive control, and present the normed criteria to analysis the results
首先分析了mr可控阻尼機理，及mr阻尼器的兩種力學模型；然後根據最優控制理論中的二次型問題，提出採用限值擬合連續最優主動控制力的半主動控制策略，並以此控制方法針對半主動控制的強非線性控制問題，對兩種結構模型進行了模擬計算，並將半主動控制下的結構響應與採用摩擦型阻尼的被動控制結構及無控結構進行了詳細的比較分析，對計算結果提出採用范數指標進行補充評價的綜合評價方法；通過三種控制狀態下的模擬計算驗證了結構半主動控制的有效性與實用性。 -
This thesis totally is divided into five chapter. as for chapter 1, oral communication teaching has been combed from the lengthways angle, which makes us know that our country ' s oral communication teaching has ever walked through the road of a difficult turns and the knowledge of oral communication teaching has been changed from ignorance to stress, from superficiality to deepness ; the chapter 2 from the horizontal angle the courses criteria of li in abord for oral communication teaching are talked of ( e. g the united states, germany, the united kongdom ), in comparison with syllabus of chinese ; the third, four chapter are the key to thesises. the chapter 3 puts forward and analyzes the present questions of current oral communication teaching ( e. g oral communication teaching ' s value orientation, oral communication teaching ' s materials, oral communication teaching ' s method, oral communication teaching ' s evaluation ) ; the chapter 4 brings up some related counter measures by aiming at this present conditions
本論文共分五章。第一章從縱向的角度對我國的口語交際教學進行了歷時的梳理，從中可看出我國的口語交際教學走過一條艱難曲折之路，對口語交際的認識也由漠視逐步到重視，對其概念的內涵的認識也逐步由膚淺到深刻；第二章從橫向的角度對國外（以美德英國為例）的口語交際教學（僅從母語課程標準）上來觀照，並將其與中國現階段的課程標準進行比較分析；第三、四章為本論文的關鍵部分，第三章對我國當前口語交際教學的現狀迷失（口語交際教學的價值取向、口語交際教材、口語交際教學方法、口語交際教學評價等四個維度）進行了較深層次的剖析與「診斷」 ；第四章針對這些迷失的現狀本文提出了一些相關的對策研究。
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