採收率系數 的英文怎麼說
中文拼音 [cǎishōulǜxìshǔ]
採收率系數
英文
recovery efficiency factor-
The method proposed in this thesis do well in solving the problems of multi - damping - ratio - spectra simulation. it is convenient to obtain the pareto optimal solution set of the multi - object question by using implicit parallel genetic algorithms and the method can meet the practical needs for simulating ground motions coinciding with multi - damping - ratio - spectra in seismic design. the crossing rate and variance rate are important parameters of genetic algorithms which affect the rate of convergence, the adapting rate of cross and variation in this paper can auto - adapt and according to stand or fall of current sample, it assures the sample approach to the pareto optimal solution set in fast convergent speed
較好地解決多阻尼比反應譜擬合問題;本文方法通過一次運行就能獲得一組具有集系特性的地震動,在擬合多阻尼比反應譜的人造地震波集系的模擬方面有傳統方法所不能比擬的優勢,產生的人造波或人造波集系可滿足工程抗震設計需要;在遺傳演算法中,交叉概率和變異概率是影響收斂速度的重要參數,本文採用的改進自適應交叉概率和變異概率,可以根據當前樣本的好壞程度來自動地選擇適當的交叉概率和變異概率,以保證演算法始終以較好的速度向pareto最優解集逼近。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To research the impact of tourism quantitatively, the writer uses more than one index or method, such as studying the income impact by method of scl, studying the industry linkage impact from the angles of in - put structure, sales structure, intermediate - requirement rate and intermediate - input rate ; calculating the influence index and be influenced index to study the industry affect impact
採用回歸分析法,考察重慶旅遊業的收入效應;通過旅遊外匯收入狀況,研究重慶旅遊業的創匯效應;計算綜合就業系數,衡量重慶旅遊業的就業效應;運用投入產出法,從投入結構、銷路結構、中間投入率及中間需求率四個角度,分析重慶旅遊業的產業關聯效應;選取感應度系數和影響力系數,評價重慶旅遊業的產業波及效應。At first we compare some kinds of investment loss function, analyze their defects and take the eignvalue of covariance matrix as the measurement of investment risk, the principle component as the information of investment market, sn and cv of the principle component as balance relationship between the profit and risk. then different portfolio selection indexes are given, and new portfolio selection models are presented, which are different from h. markowitz model. at last an example is also given
本文首先比較了幾種常用的投資損失函數,在分析它們的缺陷與不足的基礎上,提出了採用收益率的協方差矩陣的特徵根刻畫投資的風險;用主成份綜合反映證券市場的信息;分別採用主成份的差異系數與信噪比反映投資組合的期望收益率與風險之間的均衡關系,並以此作為投資組合損失最小化與收益極大化的指標;得到了不同於hThis paper studies the relationship between improved recovery efficiency of positive rhythm reservoir with different heterogeneity variation factor and the polymer injection amount, and calculates the economic index of different polymer injection amount by using polymer flooding economic model
本文研究了正韻律不同非均質變異系數油層採收率提高值與聚合物用量的關系,並利用聚合物驅經濟模型計算了不同聚合物用量下聚合物驅油的經濟指標。Based on the relationship among recovery, well spacing density and injection - to - production - well ratio given by reference [ 1 ], inte - grated with other methods such as economic evaluation and injection - production balance analysis, etc., this paper proposes a new method for determination of reasonable well spacing density and injection - to - production - well ratio in waterflooding field
依據文獻[ 1 ]中提出的採收率與井網密度和注采井數比的關系,並結合經濟評價和注采平衡分析等方法,提出了一種新的確定水驅油田合理井網密度和合理注采井數比的方法。The effects of meor include as follows : being favorable to oil - gas percolation, changing wettability of rocks, improving hydrocarbon migration, reducing surface tension of emulsified oil, decreasing crude viscosity and improving sweep efficiency, etc
採油微生物具有自身的優勢,有利於油氣滲流及提高採收率,尤其是微生物能改變巖石潤濕性、改善油氣運移、乳化原油降低表面張力,微生物及代謝產物還對原油具有降粘作用,對地層水產生有利影響,提高波及系數。Secondly, the third order nonlinear optical properties of these compounds are studied under the excitation of ps pulsed laser with the wavelength of 1064nm using z - scan technique, nonlinear refractive indices and nonlinear absorption coefficients are calculated according to the z - scan experiment curves of the compounds. all the three compounds have self defocusing characters and two photon absorptions. lastly, nonlinear refraction and absorption properties of these compounds are studied by z - scan technique under the excitation of ps pulsed laser with the wavelength of 532nm the self defocusing and reverse saturation absorption are found in these compounds
根據實驗曲線計算了它們在1064nm下的三階非線性折射率和非線性吸收系數,三種化合物都具有自聚焦特性,並且在該波長下,三種化合物均具有雙光子吸收,最後,以皮秒脈沖的532nm為激發波長,採用z掃描方法,研究了三種金屬有機化合物的非線性折射和非線性吸收性質,在該波長下三種化合物仍然表現為自聚焦特性,且其吸收為反飽和吸收。Secondly in enterprise valuation cost method should proceed with book value of the financial statement, regard market value as adjusting orientation and reduce application range of cost method. when income method is adopted, four principles should be paid attention to : a : stage - by - stage income model should be used which is made by early stage income current value added by later stage income increase. b : net profit and net cash flow should be the majority of income volume
其次為:企業價值評估採用成本法應從財務報表的賬面價值入手、以市場價值為調整目標、減少成本法的應用范圍;採用收益法應以前期收益現值加後期收益額遞增的分階段收益模型,收益額以凈利潤、現金凈流量為主,收益預測以企業未來發展潛力分析為前提的銷售收入預測為主導,折現率堅持不低於無風險報酬率等四項原則,系數以回歸方程的測算為主;市場法中參照物企業選取應以同行業企業為基準、擴大數據來源,注重評估比率可靠性驗證、利用多種比率的配合等。Introducing the thermal performance calculation method called efficient factor method with the medium of the exchange coefficient on the base of the key factors which influencing the heat and humidity ' s exchange, the characters ordinary mathematics equations stem from the analysis the double spray chamber ' s thermal performance calculation identically utilizing efficient factor method, further the equations working as the core of the theory calculation and the utilization of the spray chamber ' s structure and the definition of the experimental equations, further introducing the double spray chamber ' s thermal performance calculation equations
雙噴系統熱工計算同樣採用效率系數法,進而在理論部分引出雙噴系統熱工計算方程式,這實質上就得到了本課題的核心部分? ?組合方程組,無論是理論計算還是噴水室結構類型的採用以及試驗公式的確定均以此為核心,從而最終從理論計算、試驗測定及節能性三方面論證了雙噴水室熱回收方案的可行性。The sustainable utilization evaluation of regional mineral resources this text regards laiwu ( in the middle of the shandong province, the east hillfoot of mount tai ) as a district of studying, so do maplnfo as workbench. by the present situation analysis of mineral resources, 19 indexes are chosen to form the evaluation system of the mineral resources sustainable development, they are fund tax rate, worker per capita incomes, rehabilitation rate, sloping rate, the ratios between reserves and extraction, tailing utilization ratios, atmosphere quality, water quality, economic - societies coordinate coefficient, etc. according to the experts, the quantitative indexes are quantified
2 、區域礦產資源可持續利用評價本文以萊蕪市(位於山東省中部,泰山東麓)為研究區,以mapinfo為工作平臺,通過對礦區礦產資源開發現狀分析,決定選擇資金利稅率、職工人均收入、塌陷土地復墾率、采區回採率、儲采比、尾礦利用率、大氣環境質量、水環境質量、經濟社會協調系數等19個因子,組成礦區可持續發展評價的評價因子,根據專家賦分值將定量因子進行量化,用模糊數學的方法對數據進行處理,使它們具有可比性。And i also learned that when analyzing project risks we should find those key factors influencing the project returns, according to their sensitivity factors to irr, and then take appropriate preventive actions in order to ensure the expected economic returns of investment projects
在分析項目風險時,應根據各因素對內部收益率的敏感系數大小排出可能給項目效益帶來風險的關鍵因素,並採取相應的防範措施,從而確保投資項目能達到預期的經濟效益。This real - time system measures people physiological parameters, including pulse wave and body temperature, analyses and process data, and then transmit data to monitor - center by wireless transceiver system. the special database of monitor - center will display user ’ s pulse - rate, body temperature and the graph of pulse wave
該系統可實時檢測人體生理參數(包括脈搏信息和體溫信息) ,分析、處理採集到的生理參數,通過無線收發系統將處理后的檢測信息發送到監護中心,在監護中心的計算機數據庫上顯示用戶的脈率、體溫和脈搏波形圖等生理信息。Qualified heat recovery rate acquired from the merge equation ' s resolve in terms of the fortran program and the hvac - id graph in the course of the theory calculation. determining the experimental equations applying the ortho imitated experimental design on the basis of the simple spray chamber. the experimental date originated running double - spray chamber ' s entrance and exit air
理論計算中通過編制的fortran程序求解組合方程組,並結合hvac - id圖求得符合要求的熱回收率,其間試驗公式是在單噴水室的基礎上採用一次正交回歸試驗設計得到,試驗結果是通過對運行的雙噴系統中的室內外空氣進出口狀態參數進行測定而得到。Fe layers of different thickness have been converted to fes2 thin films by thermal sulfidation. the influence of the thickness on the crystal structure, electrical resistivity, carrier concentration, absorption coefficient and energy gap of fes2 thin films have been investigated
採用硫化不同厚度的fe膜制備了不同厚度的fes2薄膜的方法,研究了不同厚度fes2薄膜的晶體結構、電阻率、載流子濃度、光吸收系數以及禁帶寬度。In the circumstances of the te11 mode mixed with the given parasite modes, the errors from the practically used directivity can be corrected with the calculated difference between dh and d. the effective area of the receiving antenna is calculated with the established models, and measured at some points in the given frequency range
在已知混入te11模式中雜模成份及其比例的情況下,可以通過計算出dh與d的差值,對採用的方向性系數進行誤差修正。通過建立相應模型,對接收喇叭的有效面積進行了計算,並在部分頻率點上進行了實測。The explicit method is widely used for its simpleness and little memory consumed with local time step and variable coefficients implicit residual smooth to accelerate the convergence procedure. according to yoon and jameson ' s ideas, an efficient implicit lu - sgs algorithm is carefully constructed by combing the advantages of lu factorization and symmetric - gauss - seidel technique in such a way to make use the l and u operators scalar diagonal matrices, thus the numeric algorithm requires only scalar inversion. the computational efficiency is greatly improved with this scheme
顯式方法具有簡單,消耗內存小等優點,並採用當地時間步長、變系數隱式殘值光順等加速收斂措施,在定常流動的模擬中得到了廣泛的應用;根據yoon和jameson提出的簡化正、負矩陣分裂,構造的l 、 u運算元只需進行標量對角陣求逆,極大提高了流場數值求解過程的計算效率;採用newton類型的偽時間子迭代技術使時間推進精度提高至二階。In the light of the data of american treasury bill earning rate and interest rate swap, in combination of our country ' s data of treasury bill earning rate, the term structure of interest rate is simulated by using nonparametric support vector machine forecasting model, and on the basis of this, a systemic method of interest rate swap pricing is formulated by using support vector machine method to estimate fixed interest rate of swap
依據美國國庫券收益率和互換利率數據,結合我國國庫券收益率數據,採用非參數的支持向量機預測模型模擬出利率期限結構;在已知利率期限結構的基礎之上,採用支持向量機的方法模擬估計出利率互換的固定利率,從而構造出一種系統的利率互換定價方法。The simulation results show that the effective measures to improve cop of mhhp include enhancing heat transfer in metal hydride bed, adopting metal hydrides with a sufficiently flat plateau, reducing reactor heat capacities and its mass, and a highly efficient sensible heat exchange
結果表明:強化金屬氫化物床的傳熱、採用平臺傾斜度小的金屬氫化物、減小反應器材料的比熱和質量,以及換熱器間高效率的顯熱回收,是提高熱泵性能系數的有效措施。分享友人