lfa 中文意思是什麼
lfa
解釋
低摩擦人工關節置換術-
Lfa model does not take into account the electron energy redistribution due to thermal conduction and convection and assumes the transport and rate coefficients are the functions of the reduced field. recently, non - lfa model, such as eme model, has been used to improve the fluid simulations of gas discharge
該軟體可以對傳統的對向放電式、表面放電式以及新型蔭罩式pdp結構的放電過程進行數值模擬，從理論上對彩色pdp顯示單元的放電特性進行分析研究。 -
In the eme model, the electron energy balance equation is taken into account and the transport coefficients are assumed to be the functions of the electron mean energy. in this paper, a software is programmed to simulate the discharge process of plasma display cell of coplanar - electrode type, the matrix - electrode type and the novel shadow - mask pdp according to the gas discharge mechanism and fluid simulation theory. the simulation results show that both lfa model and eme model can be used to investigate the discharge characteristics of the cell, but the eme model is preferred for its better coincidence with theories and experiments
在本文中，分別使用本地場近似的lfa （ localfieldapproximation ）流體模型和假設碰撞反應系數、傳輸系數和電子的平均能量相關的eme （ electronmeanenergy ）流體模型對pdp放電過程進行模擬，比較分析模擬結果，得出eme模型和lfa模型對放電的繁流、起輝放電、熄滅等過程的描述的基本趨向是大致相同的，而從模擬工作電壓與實際電壓的接近程度和放電效率角度比較， eme模型的模擬結果跟理論和實驗結果更為相符。 -
This thesis takes the resettlement action of zhuzhou hydropower junction as a project, and makes the use of the project management theory, the fundamental principal of project post - assessment and the sustainable development theory, and builds up the principals and standards of the resettlement, and analyzes the concrete content of post - assessing the resettlement project, and designs the sustainable post - assessment index body, and lists the computer formula of the quantitative index, and makes the use of ahp and lfa to post - assess the resettlement project. we obtain the conclusion that the sustainability of resettlement project is not in good state. in order to improve it, this thesis digs the passive elements, and supplies some suggestions to sustain the sustainable development of the resettlement project, such as increasing investment, carrying out the agriculture economy industry of resettlement district
本文將株洲航電樞紐工程移民工作看作成一個項目，運用項目管理和項目后評價的基本原理，結合可持續發展理論，建立了移民項目可持續后評價的原則和標準，分析了移民項目后評價的具體內容，設計了移民項目可持續后評價的指標體系，列出了定量化指標的計算公式，並探討用層次分析法和邏輯框架法對移民項目的可持續進行后評價，后評價得出的結果表明株洲航電樞紐工程移民項目的可持續性處于次強狀態，為增強該項目的可持續性，本文通過研究挖掘出影響該項目可持續性的負面因素，提出了一些保持移民項目可持續發展的對策和建議，例如增加移民安置的投入、實行移民安置區的農業經濟產業化等等。
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