標準正態表 的英文怎麼說

中文拼音 [biāozhǔnzhēngtàibiǎo]
標準正態表 英文
standard normal table
  • 標 : Ⅰ名詞1 [書面語] （樹梢） treetop; the tip of a tree2 （枝節或表面） symptom; outside appearance; ...
  • 準 : Ⅰ名詞1 （標準） standard; guideline; criterion; norm 2 （目標） aim; target Ⅱ動詞1 （依據; 依照）...
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 態 : 名詞1. （形狀; 狀態） form; condition; appearance 2. [物理學] （物質結構的狀態或階段） state 3. [語言學] （一種語法范疇） voice
  • 表 : Ⅰ名詞1 （外面;外表） outside; surface; external 2 （中表親戚） the relationship between the child...
  • 標準 : （衡量事物的準則; 榜樣; 規范） standard; criterion; benchmark; pip; rule; ètalon （衡器）; merits
  1. Aiming at this problem, the main research issues and achievements in this paper are as follows : bi - directional data transformation between rdb and xml with semantic constraints preserved for most of existing researches on static data transformation between xml and rdb, dtd is taken as the schema description language for xml, and the semantic constraints are often lost during the transformation process. to overcome these disadvantages, the author adopts xml - schema, a standard schema description language proposed by w3c to replace dtd, as the description method owing to its more powerful functions than dtd, and of course with the syntax much more complicated. after analyzing the constraints characteristics in both xml - schema and relational schema, a semantic constraints - preserved algorithm is proposed which can realize the bi - directional schema mapping between rdb and xml through a formalized description of xml based on regular tree and a general expression for relational schema based on direct graph approach

    保留語義約束的xml與rdb雙向靜態數據轉換技術現有研究大多採用dtd （ documenttypedefinition ，文檔類型定義）作為xml的模式描述語言，並且在模式映射過程中丟失語義約束信息，本文分析了xml - schema （ xml - schema採用與dtd完全不同的語法，數據描述能力更強同時也更為復雜，已被w3c確定為替代dtd作為xml模式描述語言的標準）及關系模式的語義約束特徵，通過基於正則樹的xml形式化描述方法以及基於有向圖的一般關系模式表示方法的研究，建立保留語義約束的xml - schema與關系模式的雙向模式映射演算法，實現了xml與rdb的雙向數據轉換，較好地解決了xml與rdb在靜態數據轉換層面的數據集成問題，可有效滿足企業大量rdb數據面向xml的發布以及與日俱增的xml數據存入rdb的應用需求。
  2. By successful solution of non - linear magnetic fields and revision of the program, we can reach following conclusions : in the computation of nonlinear magnetic fields, if iteration method is used, under - relaxation is necessary when amending the permeability distribution in soft magnetic materials ; and when < wp = 5 > calculating the equivalent current density in permanent magnets, under - relaxation is not a necessity ; when searching for permeability values by interpolation method on the demagnetization curve of soft magnetic materials, if a fixed saturation point is set, around this point an abrupt change of permeability values will be obtained ; this sudden change may cause a little problem in the smoothness of magnetic field distribution ; because the magnetic circuits of microwave tubes are too complicated, in the author ' s view, to describe the working state of a magnet system, the working points of magnets can not do it properly but average energy production of magnets will serve ; as to indicate the quality of a magnet system design for microwave tubes, the efficiency of magnetic energy utilization will be a very good criterion

    由此得出結論，在非線性磁場計算中：採用迭代法的情況下，在各迭代循環之間進行磁導率修正時，一個欠鬆弛迭代過程是必需的；對永磁體中的等效電流修正時可以不作欠鬆弛迭代；在純鐵的磁化曲線上指定某一個固定的磁感應強度為磁飽和值，會使得插值求出的磁導率在該磁飽和值附近有一突變，這一突變對計算結果中磁場分佈變化的光滑性稍有影響。在微波管磁系統設計中，由於微波管磁路比較復雜，作者認為磁體的工作點並不能很好地反映磁體的工作狀態，而採用平均磁能積為衡量磁體工作狀態的標準更加符合微波管磁系統的實際情況；要表示磁系統設計好壞的程度，則用磁能利用的效率為標準更好。
  3. By using the theory of finite fields, the relationship of module operation among difference matrices of a mixed difference matrix is generalized to that of group homomorphism. a new concept of normal mixed difference matrix is proposed. the relationship between normal mixed difference matrix and the construction of orthogonal arrays is discovered

    ?利用有限域理論，把不同水平差集矩陣之間的取模運算關系推廣為更加廣泛的群同態關系，提出了標準混合差集矩陣的概念，找到了標準混合差集矩陣和混合水西安電子科技大學博士學位論文:正交表的構造方法及其應用平正交表的構造之間的關系，提出了利用標準混合差集矩陣構造正交表的方法且構造了一些新的正交表
  4. Then, this paper empirically tested the validation and predictive accuracy of different var risk management model in the domestic financial market. finally, with the analysis of modem financial risk management development trend and the current domestic financial risk management situation, this paper made a prospect for the application of this model in the construction of domestic financial risk management system. through the analysis, the main conclusions are as follows : ( l ) the traditional mean - variance model is the special example of the portfolio selection based on the var risk management model for the case that the returns of the portfolio are assumed to be normally distributed ; compared with the mean - variance model, the var risk management model is more comprehensive and accurate in the measurement of the portfolio risk, so based on the var model, the investors can allocate the asset more effectively. ( 2 ) the var risk management model can provide the timely and comprehensive risk information for the top risk manager, so it is very helpful to the improvement of total risk management efficiency. ( 3 ) based on the var model, the raroc performance valuation approach can reflect the real performance of the portfolio manager and provide the coherent standard for the allocation of risk limitation and the construction of the incentive compatibility constraint mechanism in the financial instiutions

    通過研究分析，本文主要得出如下結論： （ 1 ）傳統的markowitz均值? ?方差模型僅僅是在資產組合收益率正態分佈假設條件下基於var風險管理模型進行資產組合選擇的特例，與均值? ?方差模型中的方差風險度量方法相比， var風險管理模型能夠更全面、更貼切地衡量資產組合的風險，且基於此模型能夠更有效地進行資產配置決策； （ 2 ） var風險管理模型能夠滿足更高層次風險管理者對風險信息的需求，有助於整體風險管理效率的提高； （ 3 ）基於var風險管理模型的raroc績效評價能夠反映資產組合管理人的真實業績，從而為金融機構風險限額的分配和激勵約束機制的制定提供統一的標準； （ 4 ）國內證券市場資產組合收益率服從正態分佈的假設明顯不成立，實證檢驗表明基於資產組合收益率正態分佈假設條件下的方差? ?協方差模型對國內資產組合風險的預測存在較大的偏差，由於文中證明在收益率正態分佈假設條件下基於方差? ?協方差模型進行資產組合選擇的結果等價于markowitz的均值? ?方差模型，因此，均值? ?方差模型對國內資產組合風險的預測同樣會存在著較大的偏差，而半參數var風險管理模型則能夠取得較好的預測衡量效果； （ 5 ） var風險管理模型符合未來金融風險管理的發展趨勢，基於var風險管理模型建立內容提要風險限額內控體系、風險信息披露體系和業績評價體系，並進行金融監管，將有助於國內金融機構內部風險管理方法和外部監管技術跟上國際金融風險管理的發展潮流。
  5. Author ' s contribution to this work can be summarized as : a. provisioning of a comprehensive study on ipv4 / ipv6 and dhcpv4 / dhcpv6 b. derivation of the state transition tables / diagrams and time sequence diagrams for dhcpv6 from informal description in english c. development of an dhcpv6 server and client software package in the linux environment d. presentation of test suite planning work and definition a basic test group based on the remote test method defined by iso 9646, which is in turn used in testing the dhcpv6 software developed by the author. through comparison of the test results from sc - nctkl and a third - party company, the basic conformity between the implementation and relevant standards has been proved to some extent. finally the author gives a brief conclusion about the futher work and the prospect of developing dhcpv6

    作者的獨立的工作包括：較深入地分析了ipv4 ipv6和dhcpv4 dhcpv6的差異；利用工作原理圖、狀態變遷圖表和時序圖，較完整地描述了dhcpv6客戶機服務器的狀態變遷和信息交換過程，對dhcpv6的協議實現提供了有價值的借鑒；在linux環境下實現了dhcpv6定義的服務器和客戶機軟體；研究了有關dhcpv6測試的相關技術，並以remotetest方法為背西南交通大學碩士研究生學位論文第日頁景編寫了測試控制數據，並在在實驗室環境下進行了相關的測試;為了提高測試結果的客觀性，對筆者開發的軟體委託了第三方進行測試，兩個測試結果表明，該軟體基本符合dhcpv6的正tf的相關標準。
  6. In the paper, the main results are brought forth in five aspects as follows : ( 1 ). the analysis of statistics the characteristic indicated that the variation coefficient of the soil nitrogen density of 0 ~ 30cm depth is lower, the variation coefficient is only 3. 6 %, the variation coefficient of the nitrogen density of 0 ~ 100cm depth is much bigger than that the 0 ~ 30cm depth, it is 100 %. based on the second national soil general survey material, the average soil profile depth is 101cm, this is in corresponding with skew normal distribution, its standard deviation is 0. 0192

    通過研究，得到以下認識與結果： （ 1 ）統計特徵分析表明， 0 30cm厚度土壤氮密度的變異系數較低，為3 . 6 ， 0 100cm厚度的氮密度的變異系數相對于來說就很大，為100 ；全國土壤剖面深度平均為101cm ，符合偏正態分佈，標準方差為0 . 0192 ； 0 30cm厚度土壤氮密度服從對數正態分佈，而0 100cm厚度土壤氮密度基本服從偏正態分佈。
  7. Experiments result indicates that compared with normal linear correction, the correction method features bigger system ' s dynamic range and bigger signal - noise - ratio ( 1. 3 times ) with the reduction of standard deviation

    實驗結果表明，與常規線性校正相比，該方法不僅提高了系統成像的動態范圍，而且隨著標準差的降低，信噪比相應地提高了近1 . 3倍。
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