var variation 中文意思是什麼

var variation 解釋
磁差
  • var : VAR ＝ visual aural （radio） range 【無線電】可見可聽式無線電航向信標，聲影顯示無線電航向信標。v...
  • variation : n 1 變化，變動。2 變量，變度，偏差。3 【語言】語尾變化；變體，異體；【數學】變分，協變；順列；【...
  1. Morphological variation of inflorescence paraclades of ainsliaea latifolia and taxonomic status of a. latifolia var. ramifera

    寬葉兔兒風花序側生分枝的變異式樣以及分枝兔兒風的分類地位問題
  2. Because return of chinese security market is non - normal distribution, so we use garch - t model which can describe the time - variation of volatility and the high - peaked and heavy - tailed characteristics of return to calculate var value of market index. from empirical results we know that this model is efficient

    考慮到中國證券市場收益率序列分佈的非正態性，本文使用了既能描述方差時變性又能反映收益率分佈的尖峰、厚尾特徵的garch - t模型計算市場指數的var值，實證結果表明該模型是有效的。
  3. Morphological development of ovule - like organ on the leaf and variation characteristics of ginkgo biloba var. epiphylla mak. ohatsuki

    葉籽銀杏擬胚珠的形態發育及變異特性
  4. We introduced some calculated methods of var with static and unconditional distribution, and analyzed the time - variation of volatility using arch model and its general forms detailsly

    首先介紹了一些靜態、無條件分佈下的var計算方法，在此基礎上，利用arch及其模型對方差的時變性進行了細致分析。
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