現值系數 的英文怎麼說
中文拼音 [xiànzhíxìshǔ]
現值系數
英文
present value ratio-
Bismuth ruthenate and silver were selected as conductor phases and the mixture of calcium oxide - alumina - silicon dioxide ( cao - al _ 2o _ 3 - sio _ 2 ) glass and lead oxide - boron oxide - silicon dioxide ( pbo - b _ 2o _ 3 - sio _ 2 ) glass was selected as inorganic binder phases. it was found that, with the increasing of volume fraction of silver and conductor phase, sheet resistivities descend and there are critical thresholds
實驗發現，隨著功能相百分含量的增加，電阻膜層的方阻值逐漸減小，存在兩個臨界閾值，電阻溫度系數偏向正值;功能相中銀百分含量增加，膜層的方阻值逐漸減小，有一個臨界閾值，電阻溫度系數偏向正值。On the basis of investigations into the progressive yield process and the possible failure modes of rcc gravity dams, the quasi - elasticity design limit state of the ctrtical stability criterion is proposed and the real working state of the dams designed according to the ctriterion is discussed. a check formula using the material strength reducing factor as the safety index and a simplified formula similar to against sliding stability fromula are derived. finally, the corresponding design safety factors are given by using fem calculations with various influence parameters to be taken into account
本文在研究碾壓混凝土重力壩漸進破壞過程和可能失穩方式的基礎上，提出了以準彈性臨界作為穩定臨界準則的設計極限狀態，分析了按該準則設計的大壩的實際工作狀態，導出了以準彈性強度儲備系數為設計安全指標的審查公式以及形式與抗剪斷公式相同的簡化公式，探討了定量計算考慮各種因素影響的相應設計安全系數的合理取值，並與現行規范方法進行了比較This thesis aims to design one instrument to measurement of the fluid thermal conductivity by used the hot - wire method ( hwm ). firstly expatiated on the theory of this method, got the academic solution by analyzing the ideal model, and then amended the ideal solution to satisfy the factual situations
本文重點討論瞬態熱線法測量液體的導熱系數，從理論與實驗及數值模擬的角度分析探討瞬態熱線法測量液體導熱系數原理及其實現過程，並分析理論與實際測量過程中的誤差產生原因及誤差避免與校正。According to some research, most impecunious countries have high gini coefficient score. then, a question arises that it is lack economic growth that leads to unfair distribution, or it is the unfair distribution that leads to their lack economic growth
二是相關的研究發現，世界上最貧窮的國家，都有較高的基尼系數值，這就提出了一個問題：是由於經濟增長的乏力導致這些國家的分配不均，還是由於分配不均而使其缺乏經濟增長活力Firstly, by numerical and theoretical analysis, the author compares some existent confidence intervals, for example, " exact " confidence interval, wald confidence interval and bayesian confidence interval, and finds some deficiencies points of the confidence intervals, whose modification version has been proposed. also, several better confidence intervals such as are also presented. secondly, for given confidence coefficient and interval width, the author constructs a class of asymptotical two - stage interval estimate procedures. at the same time, under varies restriction of confidence coefflcientent interval width, the optional sample size of the first stage has been computed by numerical computation. the numerical computation shows that the method considered in this dissertation have good properties and applied value
同時，由於poisson分佈的特性，我們知道不存在其參數區間長度小於0 . 5的置信區間，基於這些情況，我們主要展開了以下兩個方面的研究：一是利用數值計算分析與理論分析的方法對現有的若干置信區間如「精確」置信區間， wald置信區間， bayes置信區間等進行分析比較，發現了一些缺陷，針對這些缺陷，我們進行適當的修正，並得到幾種性質較好的置信區間如：修正大樣本區間jeffreys原則下置信區間二是針對已給定的置信系數與區間長度，我們提出了一種漸近的兩階段區間估計程序，並利用數值計算的方法，在各種置信系數與區間長度限定下，算出了最優的第一階段觀測次數（抽樣量） ，大量數據表明，本文考慮的方法性態良好，具有應用價值。Based on consider hereinbefore, this dissertation discusses several aspects on the problem of the sustainable and optimum exploitation of groundwater resources as follows : ( 1 ) reviewed entirely the origin and evolvement of the concept " sustainable development ", stated and commented the study status in queue on " sustainable development " around national and international range, thorough discussed the science connotation about the concept " sustainable development " ; ( 2 ) looked back and commented across - the aboard some furthest basic concept and proposition related to groundwater resources, put forward self opinions on a few existent mistake points of view and chaos understandings ; ( 3 ) expatiated entirely on the content and meaning of the theory of changeable groundwater resources system, contrast with the traditional methods of groundwater resources calculation and evaluation, combined example to show the application of this theory ; ( 4 ) thorough analyzed the difficult and complexity to forecast the groundwater resources, fully stated the traditional methods of groundwater resources forecasting, pointed out the characteristic and applying condition of these forecasting method, introduced the main ideas and methods of wavelet analysis developed recently, and the matlab software be known as the fifths era computer language, and its accessory wavelet analysis toolbox, applied these methods and tools to analyze the groundwater dynamic curve, adopted the b - j method and morte - carlo method, combined with the theory of changeable groundwater resources system, discussed the new view on the forecast of groundwater resources ; ( 5 ) synthetically analyzed the characteristics and limitations of the present all kind of groundwater manage model, combined mathematical programming mathematical statistics random process and the theory of variation system of groundwater resources on the unite optimum attempter of surface water and groundwater, emphasized how to make the model more nicety, more simple, more practicality ; ( 6 ) analyzed the inside condition and outside condition to assure the sustainable and optimum exploi tation of groundwater resources, the inside conditions are the follows : correct resources idea, scientific methods of resources calculation and evaluation, credible forecast methods of resources, exercisable measures of resources management, the outside conditions are the follows : the development idea of high layer, the transform of manage system, the matched policy and rule of law, the adjusted of economy lever, the improve of cultural diathesis, the boosting up of water - saving consciousness and detail measures, the control of population rising, the prevention and cure of water pollute, the renew and rebuild of ecology ; ( 7 ) scan the sustainable and optimum exploitation of groundwater resources from the high level of metagalaxy, earth system science, and philosophy ; lint out the more directions on groundwater resources
基於以上考慮，論文主要從以下幾方面對地下水資源可持續開發問題進行了比較深入的探討：全面回顧了「可持續發展」概念的由來與演變，對國內外「可持續發展」的研究現狀進行了述評，並對「可持續發展」概念的科學內涵進行了深入探討；對涉及地下水資源的一些最基本的概念和命題進行了全面的回顧和評述，對目前仍然存在的一些錯誤觀點和混亂認識提出了自己的見解；全面闡述了地下水資源變值系統理論的內容和意義，並與傳統的地下水資源計算評價方法進行了對比分析，結合實例具體說明了方法的應用；深入分析了地下水資源預測預報工作的極端重要性和復雜性，對傳統的地下水資源動態預測方法進行了全面的評述，指出了各類預測預報方法的特點及適用條件，對最近二十多年剛發展起來的小波分析技術的主要思想和方法及其應用范圍，以及號稱第五代計算機語言的matlab軟體和附帶的小波分析工具箱進行了介紹，並應用於地下水動態過程線的分析，採用時間序列中的b ? j法，蒙特卡羅方法，與地下水資源變值系統理論相結合，探討了地下水動態資料分析和地下水資源預測預報的新思路；綜合分析了現今各類地下水管理模型的特點及缺陷，將數學規劃、數理統計、隨機過程等與地下水變值系統理論相結合進行地表水地下水或多水源的聯合優化調度，使模型更準確、更實用；對保證地下水資源可持續開發的內部條件和外部條件進行了分析，內部河海人學博卜學位論文前言、摘要、目錄條件主要是正確的資源觀，科學的資源計算與評價方法，可靠的資源預測預報技術，可操作的資源管理措施，外部條件主要是高層發展思路、管理體制的變革、配套的政策法規、經濟杠桿的調節、人文素質的提高、節水意識的增強及具體節水措施、人口增長的控制、水體污染的防治、生態的恢復和重建等;從宇宙科學、地球系統科學及哲學的高度審視地下水資源的可持續開發;指出了地下水資源可持續開發的進一步研究方向。This paper adopts linear interpolation to deal with data of wind tunnel experiment for sample uav and realizes modeling and simulation of the sample uav with c language in common aerodynamics and moment coefficient
本文採用線性插值處理樣例無人機風洞試驗數據，採用正常情況下的氣動力及力矩系數數學模型，並用c語言實現樣例無人機建模與模擬。Fast algorithms of both discrete and orthonormal wavelet and wavelet packet coefficient are diagrammatized to be introduced. daubechies wavelet is applied to help to discuss the application and test on signal filtering and noise reduction with the principle and threshold implementation ; the basic principle to pickup the fault characteristics is introduced mainly about the relations between the maximum module and signal saltation point and how to characterize the saltation point with lipschitz exponent
展示了離散正交小波變換的mallat快速演算法和小波包系數分解的快速演算法；重點應用daubeches小波探討了小波變換在信號濾波去噪中的應用和實驗，闡述了其基本原理和通過閾值化處理實現濾波的具體方法；探討了用小波變換進行故障特徵提取的原理，說明了小波變換模極大值和信號突變點之間的關系以及怎樣用李氏指數來表徵突變點的性質。This paper develops a deterministic inventory model for perishable items with a mixture of back orders and lost sales under inflation and time discounting, where the backlogged demand rate is dependent on the negative inventory level during the stock out period. the main differences from the existing related models are that the present model takes the maximum present value of profit in a repeatable order cycle as the objective function and proposes a more practical constraint of maximum customer - waiting time to ensure a proper customer service level. then the existence and the uniqueness of the solution to relevant systems are examined and a solution algorithm is shown to find the optimal replenishment policy. at last, some numerical examples are presented to illustrate the applicatioh of the model
本文建立了一種考慮通貨膨脹與時間價值的變質性物品的庫存模型，在模型中允許短缺發生且拖后的需求速率與在缺貨期間已經發生的缺貨量有關.和已有相關模型的主要區別在於本模型把一個可重復的訂貨周期內的最大平均利潤的凈現值作為目標函數，且增加了在缺貨期間最長顧客等待時間的限制，以確保庫存系統擁有較高的服務水平.然後討論了模型最優解的存在性與唯一性，並提供了尋求模型整體最優解的演算法.最後用實例說明了此模型在實際中的應用This dissertation ' s problem just comes from this engineering background exactly. for this two kinds of cores, which were taken from the engineering place, this dissertation draws sample by computer and analyses the weight distributions, getting the weight curves, the middle weights, asymmetry coefficients and other physics characteristic indexes of them, and makes up the model samples which are similar to the factual weight distributions
本文對施工現場採用的10 100kg和1 800kg重量范圍的堤心石進行了隨機抽樣和重量級配分析，得到了描述這兩種堤心石類別的重量級配曲線、中值重量、不均勻系數等物理特性指標，並由此制備重量級配相似的模型樣本。In this study, the model emphasizes particularly on time series of geological entity and at the same time it realizes the integration of the spatial model and the attributive model by integrating complicated spatial and attributive character of forest resources. program is realized by matlab. the ann toolbox of matlab established many tool functions based on ann theory
本項研究中，基於gis的神經網路預測模型主要側重的是地理實體數量時間結構序列，模型結合森林資源復雜的空間和屬性特徵，不僅使用了gis關系數據庫中的屬性時間序列值，同時也使用了一定的空間模型，實現了空間模型與屬性模型的有效結z 、口0在程序的實現上採用m八tlab開發環境，其中的神經網路工具箱以人工神經網路理論為基礎，構造了網路分析和設計的許多工具函數。Hi addition, with regard to the computation of the maximum / minimum moment, shear force, settlement and foundation reaction of pile capping beam, the randomness of both pile capacity and foundation modulus are statistically analyzed in virtue of the method ? monte carlo. accordingly, the random probability analysis of the internal force of pile capping beam can be achieved
並通過蒙特卡洛（ montecarlo ）法對基樁承載力、土體基床系數的隨機性進行統計分析，獲得了承臺梁彎矩、剪力、沉降以及基底反力的最大（小）值，從而實現了樁基承臺梁內力計算的隨機概率分析。1 m 0. 5, the phase - shifted angle 6 is controlled in term of sine law which makes the magnitude of resonant voltage track a reference sine voltage, and the resonant voltage is rectified, filtered, inverted and then the better sine - voltage output is obtained, theoretical analysis and experimental results show that for the resistive load and inductive load, the switches of leading leg of the phase - shift - controlled circuit are always turned on at zvs, and ones of lagging leg are turned on at zvs ( < 0 ) or turned off at zcs ( ( > 0 ), moreover, all switches in the low - frequency inverter are always turned on and off at zvs, the measured circuit efficiency for rated load reaches up to 88 %
從功率單向流動角度出發，提出了一種lcc諧振型恆頻移相單相高頻鏈逆變電路拓撲，在調制系數0 . 1 m 0 . 5情況下，控制移相角按正弦規律變化，使諧振電壓脈沖列的幅值追蹤參考正弦電壓信號，經過整流、濾波、低頻逆變，從而獲得正弦度較好的輸出電壓。理論分析和實驗結果證明對于阻性負載或阻感性負載，移相全橋具有超前橋臂零電壓開通，滯后橋臂或者零電壓開通（ _ 0 ）或者零電流關斷（ _ 0 ）的軟開關特性，而低頻逆變器的各個開關均實現零電壓條件下的開通與關斷。The dcs of i / a series is regarded as main reference object, and the control is separated from model. and the configuration of control is operatised at administration system, not to be added into model, not to build control sound code also. therefore it realizes on - line adjusting, real - time control and so on. users configurate by filling table. they only define i / o condition, fill certain operation variable, and name logic variable. the software offers a friendly user ' s interface, so personnel can compile and modify the control and logic program, change the value of logic and control variable conveniently, attach themselves to run, debug and control the system, not need to know the programs deeply. so the configuration software offer a flat that control engineers can attend to control loop, not to give their attention to the complicated program
在本課題中，採用填表的方式進行控制組態，用戶只需定義i / o條件、填寫具體的運算變量名即可。本軟體為建模人員提供了一個友好的用戶界面，使建模人員在建模時不必對模塊內部的控制、邏輯程序有很深的了解就可以方便的對其進行編寫和修改，實時改變各邏輯和控制變量在數據庫里的值，參與運行和調試，從而實現對系統的控制。因此，本組態軟體提供的這樣一個平臺，讓控制工程師能集中精力于控制迴路的構成，而不必拘泥於一些具體而煩瑣的程序操作。Creep analysis methods of high - rise buildings and large span buildings can only refer to creep coefficient method in bridge engineering or the method of degree of creep in hydraulic construction engineering under the present experiment conditions. in this paper, the incremental expressions of concrete creep and shrinkage strain when the initial computational age is not the same as the loading age are derived and corrected from the concept of concrete creep coefficient and the mean value theorem of integral and the principle of superposition. the differences of efficiency and accuracy of creep analysis between the finite element method with creep coefficient and the initial stress method with degree of creep are presented. this paper suggests that engineers should use the initial stress method with degree of creep to estimate the influences of creep on high - rise buildings and large span buildings on the basis of conceptual design
基於現有的試驗資料，高層及大跨度民用建築的徐變分析只能參照橋梁結構中的徐變系數方法或水工結構中的徐變度方法進行.從徐變系數的定義出發，利用積分中值定理和疊加原理，推導並修正了加載齡期與起算齡期不同時徐變收縮應變增量的表達式，對比了應用徐變系數分析徐變的有限元法和應用徐變度分析徐變的初應變法在效率和精度上的差別，並建議應從概念設計的角度出發，採用徐變度的初應變法來估算徐變對高層及大跨度民用建築的影響Abstract : creep analysis methods of high - rise buildings and large span buildings can only refer to creep coefficient method in bridge engineering or the method of degree of creep in hydraulic construction engineering under the present experiment conditions. in this paper, the incremental expressions of concrete creep and shrinkage strain when the initial computational age is not the same as the loading age are derived and corrected from the concept of concrete creep coefficient and the mean value theorem of integral and the principle of superposition. the differences of efficiency and accuracy of creep analysis between the finite element method with creep coefficient and the initial stress method with degree of creep are presented. this paper suggests that engineers should use the initial stress method with degree of creep to estimate the influences of creep on high - rise buildings and large span buildings on the basis of conceptual design
文摘:基於現有的試驗資料，高層及大跨度民用建築的徐變分析只能參照橋梁結構中的徐變系數方法或水工結構中的徐變度方法進行.從徐變系數的定義出發，利用積分中值定理和疊加原理，推導並修正了加載齡期與起算齡期不同時徐變收縮應變增量的表達式，對比了應用徐變系數分析徐變的有限元法和應用徐變度分析徐變的初應變法在效率和精度上的差別，並建議應從概念設計的角度出發，採用徐變度的初應變法來估算徐變對高層及大跨度民用建築的影響According to eigenvalue equation ( general formula ) of the energy method of the plane steel frame structure stability, and considering the restriction of the end of the column of the main steel frame and function of deflection curve gained from the differential balance equation general resolution, we get the equation for calculating the length coefficient of the main frame structure stability of the steel arch gate and the resolutions are also given
根據平面剛架穩定性能量法特徵值方程（通式） ，考慮弧形鋼閘門主框架柱的柱端約束的特殊情況，求出撓曲線函數（試解函數）通解，得到弧形鋼閘門主框架柱穩定性計算長度系數方程。其中弧門主框架主橫梁式形框架的臨界荷載比較現行規范推薦的有限元法簡單方便、結果精確及物理概念明確等優點。On the basis of the analysis of fundamental principle of thermoelectric refrigeration, the steady state mathematical model of the thermoelectric system was founded. according to the model, the theoretical analysis and calculation are made on various working conditions, and analyzed theoretically the effects on thermoelectric system which caused by hot and cold temperature difference, the device ’ s effective system figure of merit, the properties of the heat changers, which established theoretical basic for the opening up and design of the thermoelectric system and its performance test
在分析熱電製冷基本原理的基礎上，建立了熱電裝置的穩態系統數學模型，並依據該模型對熱電裝置系統進行了不同的工作狀態下的熱力分析計算，並就熱電裝置的冷熱端溫差、電堆片的優值系數、散熱器的散熱性能與熱電熱泵裝置性能的影響進行了理論分析，為熱電裝置的開發設計和現有熱電裝置的性能測試建立計算理論基礎。The research of human resource value measure models of this paper has very important theoretical meaning and realistic significance. under the guidance of marxian labor valve theory and occident human capital theory and element distribution theory, this paper aims at the high science & technology software development enterprise and designs model systems of human resource group value and individual value measuring, which not only adhere the traditional accounting principle, but also combine qualitative analysis with quantitative analysis. in detail, it is organized as follows : ( 1 ) according to some defects of the available value measuring models, this thesis brings forward 4 innovative trains of thought : adopts the method that combine qualitative analysis with quantitative analysis, and establishes the new measuring basis that contain human resource the present period input cost and realized value, and defines the high - grade human resource as the target evaluation group of individual value measuring, as the basis for revealing the real contribution of human resource group firstly and achieving individual value by distributing group value to the target evaluation group in according with the specific rules secondly ; ( 2 ) analyzes the constitution of human resource value, and comes up with new way of thinking on group value measuring : adopts the historical cost means to calculate human resource group the present period input cost, and rectifies the present period realization value theory of li - shicong professor from accounting angle, and obtains more scientifically the group present period new contribution value, as the basis for structuring the new measuring
首先揭示組織中人力資源群體對企業的真實貢獻，然後再將群體價值以一定的規則分配給目標評估群，從而確認個人價值; （ 2 ）分析人力資源的價值構成，提出新的群體價值計量思路:採用歷史成本法計量群體當期投入成本，並對李世聰教授提出的當期實現價值理論從會計學角度進行了修正，更為科學地確定了群體當期新增貢獻價值，從而構建了全新的人力資源群體價值計量模型; （ 3 ）分析個人價值的影響因素及其關系，提出新的個人價值計量思路:運用層次分析法獲得目標評估群在群體當期新增價值中的權重，確定高級人力資源當期所創造的貢獻份額;基於崗位相對權重和個人崗位績效評估值這兩個關鍵指標，將層次分析法和關聯矩陣法結合起來，計算個人貢獻價值系數，確定某個體在目標評估群中的權重，從而構建了全新的人力資源個人價值計量模型; （ 4 ）選取了一家人力資本含量較高的it公司，將所構建的理論模型在該公司進行了實證檢驗，驗證了模型體系在實務中的科學性與可操作性，從而在一定程度上豐富了人力資源價值計量理論，推動了人力資源會計與現行會計核算體系的接軌。Abstract : in order to protect environment, it is very important to explore anew refrigeration method. for its unique characteristic, thermoelectric refrigeration is applied in some conditions. numerical simulation has been developed for the air - cooled thermoelectric air - conditioner by experimental simulation on heat - insulating materials with different thickness, structure - shapes, work - conditions and air - flow capacities. the model and the method have been verified. the effects of the figure of merit of thermoelectric material and the heat transfer coefficient of cool / heat side on the performance of the air - conditioner are analyzed by the model
文摘:建立了風冷熱電空調器數值模擬模型，對空調器進行了模擬計算.在對風冷熱電空調器研製的基礎上，進行了最佳隔熱層厚度、不同結構形式、變工況、變風量和復現性實驗，驗證了模擬程序的可靠性，並應用模擬程序對熱電材料的優值系數和空調器冷、熱端的傳熱系數進行了分析分享友人