cross section data 中文意思是什麼

cross section data 解釋
橫斷面數據
  • cross : n 1 十字架；〈the C 〉 耶穌受刑的十字架。2 〈the C 〉 基督教（教義，國家）。3 不幸，苦難；挫折，...
  • section : n 1 （外科、解剖的）切斷；切割；切開。2 【外科】切片，【金相】磨石。3 （果子的）瓣。4 【數學】截...
  • data : n 1 資料，材料〈此詞系 datum 的復數。但 datum 罕用，一般即以 data 作為集合詞，在口語中往往用單數...
  1. 2. a frequency extrapolation scheme is developed to effectively predict radar cross section using floating genetic algorithm based on the geometrical theory of diffraction ( gtd ) model. the threshold discrete fourier transform ( tdft ) is introduced for the data compression in angle domain

    在目標散射中心建模方面，我們將浮點型遺傳演算法（ fga ）應用於實際人工目標的gtd模型參數的抽取，利用所抽取的模型參數完成了雷達散射截面rcs的頻率擴展以及數據壓縮，並利用擴展的數據提高了距離解析度。
  2. Second, the imaging model built here has taken into account the tilt modulation, the hydrodynamic modulation, and current modulations of radar cross section. consequently, it has realized the imaging simulation of four kinds of wakes with the same imaging model. third, the orbital velocity of ocean wave was considered as the basic dynamic factor, and the imaging model calculates the influence on raw data by the wave m ovement according to the orbital velocity

    該模型的主要特點是： （ 1 ）它採用了三尺度復合表面模型的思想來計算海面的電磁散射，考慮了中等尺度波對紋波的進一步調製作用，彌補了傳統雙尺度模型的不足； （ 1 ）它考慮了海浪的傾斜調製作用、流體動力調製作用和流場對雷達截面的調製作用，實現了用統一的模擬模型對四種艦船尾跡特徵進行成像模擬； （ 3 ）它把海面長波的軌道速度作為基本的動態成分，並依此來考慮海面運動對sar回波信號的影響。
  3. The molecules we studied are a series of trans - stilbene derivatives. first, we applied dft method optimized the new synthesis molecule 4, 4 ' - bis ( dimethylamino ) stilbene ' s structure, and used few states model calculated its tpa cross section. the results agree well with the experiment data

    首先，我們在密度泛函理論（ densityfunctiontheory ）的水平上對最近合成的分子材料4 ， 4 -二甲氨基二苯乙烯的結構進行了優化，然後採用少態模型方法計算了分子的雙光子吸收截面，得到了與實驗符合很好的結果。
  4. The coupled equation method ( cem ) has been improved to calculate 4s subshell of mnl by adding 3d ~ ( 5 ) ( ( 4 ) ~ x ) 4s ( ( 5 ) ~ x ) channels, which were verified to play a key role to the magnitude of resonance structure due to the interaction between 4s kp transition and 3p 3d excitation. our calculation shows higher symmetry and a solo peak near 51. 7ev, which is in better agreement with experimental data than garvin ' s calculation. except 3p 3d giant resonance, there are obvious 3p nd ( n > 4 ) rydberg resonances with width in the total cross section of mnl

    在研究錳原子4s殼層的共振結構時，我們首次在耦合方程方法中加入了3d ~ 5 （ ~ 4x ） 4s （ ~ 5x ）通道與大共振之間的相互作用，發現這類通道對於4s殼層的共振結構具有較大的貢獻，從而改善了在耦合方程方法中只考慮基態3d ~ 5 （ ~ 6s ） 4s （ ~ （ 7 ， 5 ） s ）的缺陷，為精確計算其他過渡金屬原子外殼層的共振結構做了很好的鋪墊。
  5. By this solution, a balde body model can be created by the optimization of the parametric grid of the blade body surface. some key techniques used in the solution, such as the computation of the data points on the meanline, the technology of cotinuty between the leading line and the outline of the blade body and the technology of the cross - section curve discretization, are disserated, and corresponding algorithm are presented in this paper

    在進行參數網格優化的過程中，需要進行中弧線數據點求解、緣頭拼接和截面線離散，本文對以上三個問題進行了深入研究，並在此基礎上提出了中弧線數據點求解演算法，緣頭拼接演算法和截面線離散演算法等研究成果。
  6. By using serial correlation test and cross - section test through the data of the share companies that were listed in shanghai stock exchange before 16th oct 1998, the size effects in china stock market was tested in the period from 16th oct 1998 to 26th oct 2001. all the share companies which in total 373 were grouped into 11 according to four different criterions. these four different criterions were total circulating captal stocks, total circulating market value, total capital stocks, total value of a share company. through the correlation test between the abnormal return rate and the size of the group, no size effect was found through the size criterion of the total value and the total circulating value except only one period

    運用序列相關性我國股票市場的小公司效應進行實證檢驗，所採用的樣本是在1998年10月16日以前掛牌上市的373家上市公司從1998年10月16日到2001年10月26日，共150周的交易數據。對公司進行以規模大小分組時，分別採用了流通市值、流通股本、總市值和總股本四種不同的標準進行投資超額收益率規模相關性分析，發現以總市值和流通市值為規模標準的實證結果除個別時期內存在著小公司效應外，其它時期並不存在小公司效應，而以總股本和流通股本為標準的小公司效應最為明顯；另外，小公司效應在統計區間內表現出時段性。
  7. The analytical approaches involved in the dissertation includes cross section analysis 、 time series regression 、 step by step regression and contrast analysis, the following technologies also are applied, including computerizing lower partial moments ( lpm ) with matlab, processing revenue data with excel, regression analysis with eviews

    主要運用橫截面分析、時間序列回歸、逐步回歸和對比分析方法，還用到matlab編程計算下偏矩風險值， excel處理收益數據， eviews回歸分析。
  8. Considering the diffuseness of the n - n scattering in the forward direction results in an increased reaction cross section. and also the angular distributions calculated in the glauber theory including these two corrections are in good agreement with the experiment data. in the investigation of the halo nucleus reaction with a loosely bound structure, one has to consider the strong spatial correlations among its constituents

    考慮了低動量轉移的核子?核子兩體散射在朝前方向上的彌散，使計算得到的反應截面增大，而且我們從彈性角分佈的分析中得到考慮了有限力程修正的效應無論是在峰的位置還是角分佈的絕對值都能更好地符合實驗。
  9. In this paper, some characteristics of flow movement and sediment transport are analyzed by using the flume experiment data. the cross section of compound channel can be divided into four regions : the undisturbed region in main channel, the interactive region between channel and plain, the undisturbed region in flood plain and the boundary region. in the undisturbed regions, the distribution of longitudinal velocity along the depth has the feature of lograithmic. whereas, in the interactive region, the longitudinal velocity does not obey the logarithmic distribution law, but it can expressed as a revised logarithmic function by using a wake function. on the basis of the kinematic equation the velocity distribution of transverse velocity is obtained. in the boundary region, the longitudinal velocity obeys the law of parabolic distribution. furthermore, according to the simplified diffusion equation, the transverse distribution of sediment concentration in the interactive region is deduced. the analysis is in good agreement with the measured data

    本文根據漫灘水流的運動特點，將漫灘水流的復式斷面分為主槽平衡區、灘槽交互區、灘地平衡區及邊壁區等4個區，並給出了各區寬度的經驗公式.根據灘槽交互區垂線流速分佈的變化特點，提出了附加尾流函數的對數流速分佈公式.在簡化水流運動方程和泥沙擴散方程的基礎上，對灘槽交互區內垂線平均流速及含沙量沿橫向分佈進行了理論分析，提出了反映灘槽水流動量交換強度的橫向渦量粘性系數及橫向擴散系數的表達式，得到了漫灘水流垂線平均流速及含沙量沿橫向分佈的解析解，並與實測資料吻合較好
  10. For tensor glueball exchange theory, we get the differntial cross section and total cross section from the decay width of experimental data. the theoretical prediction fit the experimental data very well

    對廠張紂股f球交換理論，我們從張鉻階f球的衰變覓度的實驗數據，計算出微分敝射截面和總散射截面。
  11. The comparison between the experimental data with numerical simulation show that the model have a higher precision in the lateral scouring and sedimentation deformation, time interval quantity of deposition, and output sediment concentration process during sand peak at various cross section and is applied fairly good to practical engineering

    青銅峽水庫的實測資料對模型驗證結果表明：模型在水庫不同斷面橫向沖淤變形、時段淤積量、沙峰期出庫含沙量過程都具有較高的精度，能較好地運用於工程實際。
  12. Using cross - section data of 61 countries, based on leamer ' s and peterson ' s tests, a full analysis is made of comparative advantage of world agricultural trade

    摘要本文在利莫爾、皮特森檢驗的基礎上，利用61個國家的截面數據，對主要農產品穀物、棉花、油料、肉類、糖以及全部農產品的國際貿易是否符合比較優勢原理進行了計量檢驗。
  13. The first part mainly introduces the gis concept and contents of gis, the comparison between the related software and gis, the present condition and development trend of gis etc, then introduced how to use the gis technique in a specific way such as using the method of " the half - automatic to follow " to turn the map into arithmetic figure, using the method of " the automatic calculates " gets the length of the line and area of field etc, at last got the length and width of every cross section of the fabiela river which is located downstream of xiangshan mountain. this method is superior and time - saving comparing with collecting data on the spot, having important and actual application worth

    第一部分主要介紹了gis的概念和研究內容， gis與相關軟體的比較以及gis的現狀、發展趨勢、當前gis研究的熱點等等，然後具體介紹了用gis的相關技術如：用「半自動跟蹤」方法對地圖進行數字化，用「自動量算」方法得到線對象的長度、面對象的面積等，最終完成了象山水庫下游法別拉河河道地形數據資料的提取工作，這種方法與人工實地採集工作相比，有較強的優越性和重要的實際應用價值。
  14. The computations are shown to agree well with available experimental and numerical data and the physics of 3d large - scale flow separations and vortex shedding are confirmed. the simulation of the flow around a maneuvering wigley hull is a demonstration of capability for calculations of sway forces and yaw moments acting on a hull moving obliquely at a large range of yaw angles. the focus of study is large - scale cross - section separation flows, bilge - vortex development along the hull in the longitudinal direction and their effects on hydrodynamic forces

    應用所開發的求解器，以wigley船型為算例計算了大角度斜航船體粘性流場和水動力，分析了漂角的變化對船體所受到的粘性水動力的影響，相當精確地預報了以橫流分離和般渦生成與泄出為特徵的操縱運動船體特有流動形態及橫向水動力和轉脂力矩，經與現有試驗和計算數據比較，檢驗和驗證了該求解器精確模擬繞斜航運動船體的大尺度分離流動和計算非線性水動力的能力。
  15. The cross section data were fitted and the covariance data were combined for each reaction channel by using the spline fitting program ( spc ) developed at cndc

    利用中國核數據中心的spc程序對每一個反應道的各家數據的截面進行擬合、協方差進行合併。
  16. First, using daily trade data, we measure the mid - term liquidity of individual stock, and carry out cross - section analysis for it. we discover individual liquidity do not have notable discrepancy in different area, sector and size, but the interactive factor of sector and size have notable influence in individual liquidity. then using the 5 minutes intraday data for measuring the individual short - term liquidity,

    首先利用日交易數據對個股中期流動性指標進行了度量與橫截面分析，發現個股日流動性在地區之間不存在顯著的差異，不同行業、不同規模之間也不存在顯著差異，但行業和規模的交互因素對流動性的影響比較顯著。
  17. Better agreements between computation results and experimental data were found using the models. ( 4 ) two phenomena in straight - convergent - divergent - straight microchannels were identified, which are different from the macroflow through experimental studies. one is that the first appearing sonic point position in microchannels is not near throat cross - section

    （ 4 ）對等直收縮擴張等直微管道中氣體流動的實驗研究發現兩個特異現象：其一為微管道內最早出現聲速點的位置不一定在喉部附近，其二為微管道中的臨界壓比與常規值有很大差別。
  18. Adjusted the input parameters, a set of optimal data and covariance matrices were obtained in the statistical meaning. correlative coefficients of the cross sections were plotted in three dimension pictures with origin program. in this way, the physical meaning of the covariance matrices and the correlation between the cross section data at each energy points are displayed visually

    通過調整輸入參數，最後得到在統計意義上最佳的推薦值及相應推薦值的協方差矩陣，並用origin程序畫出相關系數的三維空間圖，形象地顯示了協方差矩陣的意義及各個能點之間截面的相關性。
  19. Culture and education, other goods is over 1. second, cross section data analysis of consumption composition of urban and rural households shows that : ( 1 ) mfc of urban households is lower than its in long - term ; ( 2 ) mfc of rural households is lower than that of urban households ; ( 3 ) the income elasticity of rural households on such good as transportation and communication, housing, dressing, culture and education is high, but low on household facilities ; ( 4 ) the response of urban households on an } 7 goods " price is sensitive than that of rural households ; ( 5 ) the changing foods price of urban and rural households can great affect consumption of other goods. chapter six : analysis on consumption function of rural households in jiangxi province

    另外，值得注意的是農村居民的居住需求收入彈性大於城鎮居民，反映出農村居民對住房投資的偏好仍未改變;第五，對城鄉居民價格彈性的分析表明，城鎮居民在各大類商品上對價格的反應都要高於農村居民，而農村居民對交通通訊、食品、衣著、文教娛樂等方面的價格變化反應強烈;第六，對互價格彈性的計算表明，城鄉居民的食品價格變動后對其他七大類商品需求量的影響最大，說明穩定食品（或農產品）的價格對于提高城鄉居民的消費水平是非常重要的。
  20. First of all, both r & d labor and r & d capital input variables are introduced into the input vector, and a two - level ces production function model is constructed to describe the technology of production. then the firm - level cross - section data of shanghai ’ s main manufacturing industries in 2003 is employed to study the input - output effect of r & d as well as the substitution relationship among input factors. moreover, the thesis also makes a methodological discussion of multicollinearity, and proposes a feasible approach to deal with the problem

    首先，在生產函數的投入要素向量中引入r & d投入變量，包括r & d人力投入和r & d資本投入;然後，結合相關的研究經驗和本文的研究目的，構建了相應的二級ces生產函數模型;在此基礎之上，採用2003年上海主要製造業企業的橫截面數據，分行業研究了r & d投入對產出的作用以及r & d投入與非r & d投入之間的替代關系。
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