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sampling value中文是什么意思

  • 采樣值

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  • To take charge of such " divergence " to a minimum , this thesis takes the listed companies of different professions as its research samples , seeks the affecting factors of the dividend policies on the companies of all professions ( taking the requirement that the sample value should be no less than 30 in the t test into account , this thesis focuses only on the factors whether to pay cash dividend and the factors affecting the cash dividend paying levers ) and then compares them with the results from the samples of the listed companies , and explores whether these are some distinctions existing and whether it is of significance to research dividend policies according to the profession that each company belongs to
    為了將這種“偏離”控制在最小范圍,本文分別以各個行業(yè)的上市公司為研究樣本,尋找影響各個行業(yè)上市公司股利政策的因素(考慮到t檢驗時樣本量不小于30的要求,本文只研究影響是否發(fā)放現(xiàn)金股利的因素和影響現(xiàn)金股利發(fā)放水平的因素) ,并與以全體上市公司為研究樣本所得到的結(jié)果進行比較,考察是否有區(qū)別,區(qū)別是否顯著,從而判斷分行業(yè)研究股利政策是否有意義。本文將分以下五章。
  • Firstly the electric - drive equipment is simplified in order that its circuits " working status could be obtained by computer by disposing the sampling value . secondly interface program is designed under objectarx2000 in order to drive the static circuit diagram drawed by autocad . lastly sampling value is transferred through the communication between pc and several sampling scms
    有幾個關(guān)鍵性技術(shù)問題得到了解決:首先將電傳動裝置進行簡化,使其電路工作狀態(tài)通過計算機對電壓采樣值的處理得到確定;其次利用二次開發(fā)工具objectarx2000開發(fā)出接口程序,實現(xiàn)了對autocad所繪制電傳動電路圖的驅(qū)動;最后通過pc機同多個采樣單片機的通訊解決了對大量采樣數(shù)據(jù)的傳輸問題。
  • The safety of transmission line plays a important role in power system safety it is not only the requirement of ensure supply power reliability , but also the necessary precondition of enhance power system stabilization , to remove faulty line quickly and accurately , also keep non - faulty line continuous work when some transmission line faults current differential protection is a kind of simple , reliable and good - selective protection manner to any variety of transmission lines , power system development needs current differential protection apply to transmission lines , moreover the advancement of electric and communication technology enable current differential protection apply to transmission lines firstly , the paper discusses , analyses the research and application transmission line protection in detail , compare the principle and realistic presupposition of general line pilot protections secondly , because conventional current vector differential protection are influenced easily by load current and transitional resistance , in order to at the same time quicken protection act , the principle and criterion include work characteristic of differential protect based on fault component sampled values are studied , results shows that differential protect based on fault component sampled values excels general vector current differential protection in reliability , sensitivity and anti - saturation of current transformer in addition , synchronous current sampling methods at all terminals of line is analyzed and estimated lastly , the principle and criterion . also device design about current sampling values differential protection based on optical fiber communication , which apply to short transmission lines are concretely investigated ,
    基于基爾霍夫定律的電流差動保護無論對于何種形式的輸電線路都是一種簡單、可靠、選擇性強的保護形式,電力系統(tǒng)的發(fā)展使得電流差動保護應(yīng)用于線路保護成為需要,而電子、通信技術(shù)的發(fā)展使得電流差動保護應(yīng)用于輸電線路成為可能。首先,本文對目前線路保護的研究和實際應(yīng)用情況進行了討論和分析,比較了常用線路縱聯(lián)保護的實現(xiàn)原理和實現(xiàn)條件及優(yōu)缺點。其次,針對常規(guī)相量電流差動保護易受正常負(fù)荷電流和故障過渡電阻影響的缺點,同時為加快差動保護的動作速度,對基于故障分量瞬時采樣值電流差動保護的原理、判據(jù)、動作特性等作了討論和分析,結(jié)果表明基于故障分量瞬時采樣值電流差動保護在可靠性、靈敏度、抗電流互感器飽和方面明顯優(yōu)于常規(guī)相量電流差動保護,對電流差動保護各端的同步采樣方法和數(shù)據(jù)通信也進行了分析和評價。
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