efficiency of selection 中文意思是什麼

efficiency of selection 解釋
選擇效率
  • efficiency : n. 1. 功效。2. 效率；效能；實力，能力。3. 【物理學】性能。
  • of : OF ＝Old French 古法語。
  • selection : n. 1. 選擇；挑選；選拔。2. 拔萃；選擇物；精選物[品]；文選。3. 【無線電】分離，（自動電話）撥號。4. 【生物學】選擇，淘汰。
  1. In particular, feature selection removes irrelevant features, increases efficiency of learning tasks, improves learning performance, and enhances comprehensibility of learned results

    特徵選擇能夠移除不相關特徵，提高學習效率，改善學習性能，增強學習結果的可理解性。
  2. This study was conducted to examine the interrelationship of 10 seed vigor traits in 12 wheat genotypes through variance, co - variance and path coefficient analysis, to determine broad - sense heritability, and to estimate genetic advance under selection. the genotypes showed significant difference for all traits, except for percentage of normal seedling. genetic correlation between conversion efficiency of seed reserve, electrical conductivity with other traits were not significant, showed that selection for any of them might be possible without hampering any other traits. however path coefficient analysis indicated that conversion efficiency of seed reserve, seed reserve utilization ratio have strong direct effect in affecting seedling weight, and that mean germination time has significantly negatively correlated in affecting gi. moderate to high estimates of broad - sense heritability, genetic coefficient of variation and expected genetic advance were obtained for electrical conductivity, germination index, mean germination time, seed dry weigh, seedling dry weigh, seed reserve depletion ratio indicating the possibility for improving these traits

    本研究利用12個普通小麥品種對10個種子活力性狀的遺傳變異和相關研究，表明除正常幼苗百分率外，其餘種子活力性狀在品種間均存在顯著的差異.種子貯藏物質轉換效率、電導率兩個性狀間及與其它性狀均無顯著的遺傳相關，因此對他們的選擇不會影響到其它性狀.通徑分析表明幼苗干重主要取決于種子貯藏物質轉換效率、種子貯藏物質利用速率;發芽指數主要由平均發芽時間決定.電導率、發芽勢、幼苗干重、種子干重、發芽指數、種子貯藏物質消耗比率6個性狀表現中到高的遺傳力、遺傳變異系數和相對遺傳進展，指明通過遺傳育種手段改良這些性狀是可能的
  3. The research method and theory is still wick about the foundation of the loading and unloading equipment selection, the efficiency simple loading and unloading equipment, the efficiency of the loading and unloading line, the summary efficiency of all loading and unloading lines on port, and the optimum of the loading and unloading arts and crafts recently. there is no a ripe theory on that above. so, this paper attempt to set up a series of analyzing method and form a theory system on it to improve the efficiency of port and bring more benefit

    關于港口裝卸機械的選型依據、港口裝卸機械的單機效率、港口裝卸作業線效率、港口企業裝卸作業系統即多條作業線綜合效率、港口裝卸工藝中裝卸機械的性能匹配和效率匹配以及港口裝卸機械資源優化配置問題的研究和理論方法還比較薄弱，港口裝卸機工藝的選擇、工藝系統裝卸機械數量和等級的確定以及裝卸機械選型尚沒有成熟的理論依據。
  4. With fast development of our country " s gas industry and air ' s increasingly serious contamination in city, using gas instead of coal and supplying energy in high efficiency and cleanliness has become necessary way in city. there are different problems in the current heating ( air conditioning ) systems. in the cogeneration system, heat and power affect each other, heating - pump heating ( aie conditioning ) system can not satisfy the peak load very well, the cost of gas fuel in boilor heating sestem is so high. the high generating efficiency of the diesel - engine two - sourse heating ( air conditioning ) systems is limited in range of 100kw - 1000kw, the heating scope is so limited. combined cycle of two sourse heating ( air conditioning ) system is most suitable selection to buesness community with big scope my paper aim at this syetem ' s primary question when it is applied in our country - - - - bringing project into execution and technology economy feasibility and off - design performence, combined with a certain demonstrating project in beijing buesness community, going along with calculating and analyzing, drawing out some efficient datas and conclusions, based on this, bringing out primary alements affecting combined cycle of two sourse heating ( air conditioning ) system " economics

    熱電聯產系統熱電相互牽連，熱泵供暖（空調）系統不容易很好地滿足尖峰負荷，鍋爐供暖系統供熱中天然氣燃料構成的成本過高，內燃機雙源供暖（空調）系統的高發電效率僅限於100kw - 1000kw負荷范圍，供熱面積有限。對于大面積的商業園區、居民小區，燃燒天然氣的燃氣-蒸汽聯合循環雙源供暖（空調）系統是最佳選擇之一。本論文針對該系統在我國應用時的主要問題- - -方案的技術實施與技術經濟可行性，結合北京某一商業園區示範工程，進行了系統的計算與分析，得到了有效的數據與結論，在此基礎上，提出影響聯合循環雙源供暖（空調）系統經濟性的主要因素，並進行敏感性分析，得出有益的結論；最後通過各種供暖方案的比較分析回答了某些人對該系統的疑慮和不解，並指出系統的優化方向。
  5. After that, she adopts game theory to study twice price reductions. from the game primary factors such as participants, strategy and benefits, she sizes up the efficiency of the price competition, and analyzes the strategical selection system in competition and cooperation between humen bridge co. and humen ferry co. in the third section, firstly, she draws out the linear regression formula with time series data and vehicle flow to estimate future flow under the condition of un - reducing price with the tools of statistics

    第三部分先用統計學的基本原理和分析工具求得虎門大橋車流量與時間序列的線性回歸方程，來推算假設在未調價條件下的年流量；再運用管理經濟學的價格彈性理論比較調價前、后的車流量和價格的變化關系，求出二類車的價格彈性系數，用以判斷虎門大橋這次二類車調價策略的效率性。
  6. With an eye to the large space of the state and action, the notions of “ generalization of state ” and “ generalization of action ” are defined, which are used to cut short the state space. since every agent can get similar experiences while learing, a experiences sharing method is proposed to improve the efficiency of learning in this method. however, by using the tsgs - based framework, macrl - japs is proposed. on the purpose of solving the multi - equilibria problem in games, the notion of japs is brought in. this method can ensure the agent to exactly predict the actions of others, and then to achieve the same optimal equilibrium selection

    Macrl - cc在對系統目標的特性進行分析的基礎上，將系統目標進行分解，並採用基於承諾和約定的協作方法實現agent的協作求解;考慮到狀態行為空間可能很大的問題，提出了狀態和行為的泛化的概念，對狀態空間進行了縮減;針對agent在求解過程中學習到的經驗知識的相似性，提出了經驗知識共享的方法以提高學習效率。
  7. Within the model of property right and transaction cost, chapter two analyzes efficiency and selection of various farm contracts theoretically. the four forms of farm contracts, yeoman, fixed rent contract, share contract and wage contract are equally efficient under the condition of zero transaction cost, which is proved in terms of theory and mathematics

    內容提要第2章，在產權和交易費用的模型內，從理論上論述了各種農地合約的效率及其選擇問題，在交易成本為零的條件下，土地合約的四種形式:自耕農、地租合約、分成合約和工資合約具有同等的經濟效率，並從理論上和數學上給予證明。
  8. The point of paper is to make a deep survey on feature selection for unsupervised learning, which can provide some valuable practical experience of enhancing efficiency of data mining for unsupervised learning

    本文的重點就是對無指導學習下的屬性選擇進行深入研究，以此為無指導學習環境下的提高數據挖掘的效率提供一些實踐經驗。
  9. Fpga has become the best selection in the design of complex digital system in modern design process of digital system, especially in communication system, because of its merits like high integration, better reliability, short design period, less investment and agility. the usage efficiency of fpga for communication system can be raised by designing low rate speech coder in fpga

    在現代數字系統設計中， fpga因為高集成度，高可靠性，設計周期短和投資小逐步成為復雜數字系統設計的理想首選，尤其是在通信系統中大量地使用，把低速率的語音編碼器在fpga中設計，可以提高通信系統中的fpga的利用率，節約成本。
  10. For example, we studied the influence of angle to the propagation efficiency of y - type embranchment and influence of calculation window size, selection of reference refractive index, the interval between dots, the difference of refractive index to the calculation of bpm

    例如： y分支的夾角對y型分支波導光傳輸效率的影響，參考折射率的選擇、計算窗口的大小、格點間距值、折射率差的變化對bpm計算精度的影響。
  11. Aiming at the problems of reducing cost, increasing the separation efficiency of the solid and liquid, and improving the disperse rate and the photocatalytic effect of nano - tio2 when synthesizing in liquid phase, this dissertation, taking the natural minerals as carrier and the industrial metatitanic acid and the industrial black titanic liquid as the raw material, has studied the selection of the nature mineral, the methods and the conditions of the preparation of tio2 / mineral with nano - structure and the photocatalysis of the product

    本文針對在液相法制備納米二氧化鈦時，如何進一步降低生產成本，提高產物液固分離效率，以及改善二氧化鈦納米粒子的分散性和光催化效果等問題，採用天然礦物為載體，以工業偏鈦酸和黑鈦液為原料，從天然礦物篩選、功能材料制備工藝研究和制備方法比較、產品的光化活性等三個方面進行了研究。
  12. Silicon horizontal integration processes are very mature. considering the compatibility of the technics, taking silicon material as the luminescence devices will be the perfect selection. but the most important things are how to improve the efficiency of the luminescence

    由於硅的平面集成工藝已相當成熟，所以從工藝兼容性考慮，用硅基材料作為發光器件將會是最佳的選擇，而其獲得應用的關鍵是提高發光效率。
  13. There are certain advantages to annotation properties - based pointcuts, especially for compile - time checks and efficiency of static selection

    基於注釋屬性的切入點有某些好處，特別是對于編譯時檢查和靜態選擇的效率。
  14. Directing against state of affairs at present, such as margin of type - selection parameters being selected comparatively large during design stage of air fans for boilers in thermal power plants, the opening degree of air fans in operation being often smaller ( for adjustment of inlet regulator ) or operation at lower revolution speed ( for speed - regulating operation mode ), and efficiency of air fans being lower etc., factors and corresponding measures having to pay attention in margin selection of air fan ' s parameters have been put forward through analysing practical example of retrofitting forced draft fans in one power plant, playing certain positive role for energy - saving and benefit - increasing in power plants

    摘要針對目前火力發電廠鍋爐風機在設計選型時參數裕量選取較大，運行時風門開度較小（對入口調節器調節）或低轉速運行（調速運行方式） ，風機效率較低的狀況，通過對某電廠送風機改造實例的分析，提出了在風機參數選擇中的裕量選取需要注意的因素及相關對策，對電廠的節能增效有一定的積極作用。
  15. By enhance the cost of information packing, cut down the income of being listing company, reduce the probability of the supervisor making the wrong decision, our. prospectus criterions can be improved and efficiency of listing selection system can be enhanced

    可以從提高信息包裝成本，降低上市收益，降低監管者的錯誤決策概率等方面入手，通過完善招股說明書準則，提高上市選擇制度的有效性。
  16. The advantages of organic materials over inorganic materials are high fluorescent efficiency, wide selection of colors and the easiness in the fabrication of large films

    與無機物相比，有機發光材料具有高熒光效率、顏色的廣泛選擇性及易成膜性。
  17. With applying bpann, the model of tactic selection can be put in practice. the key problem of applying bpann is efficiency of arithmetic, which is solved by comparing efficiency of arithmetic in different arithmetic

    採用前向人工神經網路（ bpann ）實現策略選擇模型，主要分析bpann原始數據處理問題? ?指標體系可靠性，在matlab6 . 0環境下分析bpann的演算法和泛化能力。
  18. When its performace is determinate, the efficiency of the memory in a system depends on the design of the interface controller. this paper discuss the design of the nice interface controller from interconnection strategy selection, interface protocol establishment and memory timing parameters. sgram is one of the successful graphics device with high performance and high speed in the multimedia technology application area recently. fsm resolve the arbitration mechanism and timing matching problems in the sgram controller design

    在存儲器性能確定的情況下系統如何高效率地使用該存儲器決定於其介面控制電路設計的優劣。本文從介面策略選擇、介面協議制定以及存儲器遲滯參數入手討論如何設計性能優良的存儲器介面。 sgram是近年來出現的較為成功的面向多媒體技術的內存器件之一，是一種高性能、高速度圖像存儲器。
  19. By applying an extended dynamic colonal selection ( dynamics ) approach and the niching technique, this paper presents a maturation detector evolution algorithm to improve the diversity and efficiency of the detectors

    摘要基於擴展的動態克隆選擇的入侵檢測模型，在動態克隆中引入小生境技術對成熟檢測器進行進化，以增加檢測器的有效性和多樣性。
  20. The authors analysed the firing efficiency of varied firing modes under the varied conditions of firing using probabilitic analysis, and simulated the varied firing modes of single tank using statistical experiment method, then analysed the performance of tank, the proficiency of marksman, the circumstance of battlefield and the influence of characteristic of target on single tank ' s firing efficiency as well as selection of firing model

    採用概率分析的方法對單坦克在不同射擊條件下採用不同射擊方式的射擊效能進行了分析，並運用統計實驗法對單坦克不同射擊方式進行模擬，分析坦克性能、射手射擊水平、戰場環境，目標特徵對單坦克射擊效能及射擊方式選取的影響。
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