selection difference 中文意思是什麼

selection difference 解釋
選擇差
  • 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。
  • difference : n. 1. 差異，差別。2. 不和，爭論。3. 【數學】差，差額。4. 【邏輯學】特殊性。vt. 〈罕用語〉區別，使有差別。
  1. In order to find replacer for metronidazole and drug selection. some diesters or esters of acids containing nitrogen with metronidazole were designed and synthesized, which have difference in water - solubility. metronidazole was reacted with the corresponding amino or imino multi - carboxylic acid compounds in the presence of acetic anhydride or thionyl chloride or dcc. the intermediate of nitrilotriacetic acid with ac

    為尋找羥乙基甲硝唑的替代物，分別採用酸酐法酰氯法或dcc法，將氨基羧酸與羥乙基甲硝唑反應，得到5個親水性不同的單酯或二酯，用ms譜確證了次氨基三乙酸與乙酸酐反應的中間物，並對得到的酯的
  2. However, the number of hosts parasitized betwween chinese cabbage cultivars, or common cabbage cultivars was no difference. ( 4 ) the role of plant volatiles from the chinese cabbage and the common cabbage in host selection behaviour of d. semiclausum females was investigated by y - tube olfactometer

    當白菜和甘藍植株是完整的、或僅遭機械損傷時，兩種蔬菜的揮發物對雌蜂的引誘力相似，而當植株遭受小菜蛾取食、或正在被小菜蛾取食時，白菜揮發物對雌蜂的引誘力較甘藍的顯著要強。
  3. The results showed adult females preferred to lay more eggs on the chinese cabbage than on common cabbage. the amount eggs they laid on chinese cabbage cultivars or common cabbage cultivars were difference. ( 2 ) the role of plant volatiles from the chinese cabbage and common cabbage in host selection behaviour of p. xylostella adult was investigated by y - tube olfactometer

    結果表明，無論是完整植株，還是機械損傷植株、蟲損傷植株或蟲-菜復合體植株，白菜揮發物對小菜蛾的引誘力都較甘藍的大；而白菜或甘藍各兩個供試品種間的揮發物對小菜蛾的引誘力無顯著差異。
  4. Feature selection algorithm based on potential difference

    基於位差的屬性選擇演算法
  5. This paper concludes that an indicator system based on eva, and assisted with mva, balance scorecard and eva driving factors can fulfill the required function ; 3. through discounter cash flow model, this paper decomposes key financial driving factors, which are competitive advantage period, the difference between the rate of profit and weighted average cost of capital, profit growth rate and the scale of invested capital ; 4. this paper concludes that the appropriate selection of financial management target, the establishment of financial appraisal model and financial performance indicator system, the decomposition of driving factors compose a complete framework to guide the enterprise in the process of striving for the sustainable growth

    本文分解得出企業價值增長的關鍵財務驅動因素- -收益增長年限、回報率差、收益增長率以及資本規模，它們全面摘要涵蓋了企業戰略、籌資、經營、稅收、收益分配以及投資等各方面的活動: 4 .本文認為財務管理目標的恰當選取，財務評估模型和財務評價指標體系的構建以及驅動因素的分解，能夠有效地指導企業在追求持續增長過程中目標制定、目標執行以及評估反饋等各個層面的需求，並使得企業在實踐中能夠有效地進行戰略規劃和財務運作。
  6. Through analysising the characteristics of the power system with floating neutral point deeply, the paper puts forward a new plan of single - phase to ground fault line selection on the base of s ' s signal injecton method and gives the hardware and software design. in this design, the high speed sampling and data processing is carried out through using dsp processor ; the large electrice current is drived through the application of a high - performance audio power amplifier and transformer ; the communication between host computer and detectors is realized through rs485 bus technology ; the difference multilevel frequency - selected amplifier is designed and the feeble signal of space is sampled on the base of the theory of magnetic induction ; the interface between dsp and exterior chip and rs485 interface logical is designed through using fpga ; the using of lcd module and keyboard interfacing chip makes the interface between human and machine ; the programme of host computer and detectors is designed through using blocking design method

    在本設計中，採用高速的dsp處理器，實現了對故障特徵信息的高速採集與處理;採用大功率的功放晶元與變壓器配合的方法，實現了大電流信號的驅動輸出;採用485總線技術，組建了裝置主機與多探測器之間的主從式通訊網路，實現了多干擾條件下裝置主機與多探測器的可靠通訊;設計了差分式多級選頻放大電路，採用磁感應的方法實現了對空間微弱信號的接收;利用fpga技術，實現了控制器與多外設的介面及數字信號的串並轉換;採用了先進的lcd液晶顯示模塊及鍵盤介面晶元，設計了人機信息交互的介面;採用了模塊化的軟體設計方法，開發了裝置主機及探測器的軟體程序。
  7. Which combines four acceleration techniques : fast detection of overlapped regions by reverse calibration, more - careful selection of control points, fast surface closet point computation with closet vertex caching and compatibility test of pairing points based on the difference of modulation

    針對兩幅距離像間的配準，我們分別從重疊區域檢測、控制點選取、對應點計算和對應點有效性檢查四個方面提出了多種加速方案，從而實現了大數據量距離像的快速局部配準。
  8. 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
  9. With the new demands, the traditional methods for location selection reveal some shortcoming : there is obvious difference between the abstract mathematical models and the practicalities ; it is very hard to consider all the complex and abstract factors with the traditional methods ; the abundant data can not be organized and analyzed efficiently ; the traditional methods can not provide the decision - makers some visual and interactive tools to analyze the location problems

    面對新的要求，傳統的選址決策方法暴露出其固有的不足，主要表現在抽象的數學模型往往容易脫離實際；難以全面考慮復雜、抽象的選址要素；不便有效組織多源的相關數據進行綜合分析；不能為決策人員提供直觀、交互的分析工具等方面。
  10. Epc ( engineering, procurement and construction ) tender is normally taken as the way of international power project bid, the management of bid of the turnkey contract ranged from project information collection, agent and sub - contractor selection, pre - qualification confirmation, site investigation, equipment and material price requisition, bid document and offer preparation. especially, the management methods for choice of project, agent and sub - contractor selection, the organization setting and skill of bid offer are difference from domestic project. the ability to manage the international epc bid activity is the key factor to win the project, and is very important to the operation of the wined contract

    涉外電力工程通常採用總承包方式招標，投標涉及項目的前期跟蹤、代理人及分包商的選擇、資格預審、現場踏勘及收集資料、設備詢價、編制投標文件及投標報價等投標全過程的各個方面，特別是項目的選擇、代理人和分包商的選擇、管理組織機構的設置、報價技巧等方面的管理方法與國內總承包工程投標有較大的差別，針對涉外電力項目工程的特點，如何運用管理方法和技巧進行管理，將直接關繫到項目投標的成敗，同時對中標后進行項目的實際操作也具有舉足輕重的意義。
  11. Aim at ubiquitous parallel multi - reservoir structure in our country ' s basin, the universal objective function including coefficient bi embodying a spatial significance difference at different flood control points and variable ai denoting a selection of scheduling mode is established, which provide a valid intervenor interface for flood control consultation decision. according to the real - time requirement, a model of reservoir storage allocation is proposed, which embody basic idea of phasic compensation. passing the dynamic correction to cut down the disadvantageous influence that indetermination result in on the certain degree, joining together the step alternation solving method, this model can maximally consider bias of decision makers, ensure the rationality and practicability of the solutions

    針對我國流域中普遍存在的並聯庫群結構，論文提出包含不同防洪點重要性的系數_ i和選擇調度模式的變量_ i的通用目標函數，為防洪會商決策，提供了有效的人工干預介面，根據實時性要求提出動態分配防洪庫容的庫容分配方法，體現了相機補償的基本思想，通過動態修正在一定程度上可以削減不確定性造成的不利影響，結合分步迭代求解技術，能最大限度體現決策者的偏好，保障解的合理性和可操作性。
  12. There exists technology need difference among all types of farmers which embody on the farmers " selection of diseases resisting and anti - adversity. there is a big cognition and behavior gap between government, agriculture researchers and extensionists. on the basis of the above research findings, this thesis puts forward the following policy recommendations : reinforce invest into the drought research is the optimizing selection in agriculture research invest reinforce the technological research which is suit to the women labor deepen the agricultural technological extension reform, reinforcing invest into the agricultural technological extension found a down to up agricultural technology system deepen the maize research system reform

    浙江大學碩卜學位論文利用參與式農村評估方法研究農戶的玉米生產行為根據我們的研究結果，本文提出以下幾條政策建議，一是增加抗旱方面的研究投資已成為我國政府農業科研投資的最優先選擇，重視西南地區農民對高產群體改良品種（ opv ）的需求，增加對opv品種選育和推廣工作上的科研投資;二是加強適合婦女勞動力的技術研究;三是建議政府深化現行的技術推廣體制改革，增加農業技術推廣投資，加強農業技術推廣活動;四是建立一個由下到上的農業科技體制;五是深化玉米科技體制改革
  13. Then navigation asteroids are selected under a integral evaluation, the planning of the photoing sequence is handled with an improved genetic algorithm, along with a difference selection method which optimizes the ratio of navigation evaluation to resource consumption. a single axis randomized expanding algorithm is proposed to solve the large angle slew maneuvers planning problem. this algorithm randomly produces

    對于自主探測器大角度機動規劃問題，本文提出單軸隨機擴展演算法，單軸隨機演算法在生成隨機節點過程中充分利用鄰近點的信息，把規劃問題構造空間的維數由3減少到2 ，從而減少問題求解的搜索空間，最後利用前向搜索的方法對規劃路徑進行優化。
  14. However, volatiles from the same treatment plants of chinese cabbage cultivars or common cabbage cultivars were no difference for adult females. ( 3 ) the females of d. semiclausum reared on radish were tested in the oviposotion selection of d. semiclausum between chinese cabbage and common cabbage. when d. semiclausum wasps were provided with equal numbers of larvae of p. xylostella, the number of hosts parasitized on chinese cabbage was more than on common cabbage

    （ 3 ）以蘿卜為寄主植物飼養的半閉彎尾姬蜂，對白菜、甘藍不同寄主植物上寄主幼蟲的產卵選擇性試驗結果表明，當寄主幼蟲的密度相同時，該蜂顯著嗜好寄生白菜上的小菜蛾幼蟲，而對白菜早熟五號、夏豐兩個品種間以及甘藍蘇晨一號、京豐一號兩個品種間小菜蛾幼蟲的寄生率無顯著差異。
  15. Based on the concept named structure difference among neural networks in ensemble, a negative selection immune algorithm is designed

    在定義神經網路結構差異度的基礎上，提出了利用免疫演算法選擇網路個體的神經網路集成方法。
  16. 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。
  17. The selection remains the best individual if its fitness is larger than given threshold. the crossover uses a larger mutation probability if the difference between individuals is small. the numeric computation shows that those improvements can increase ga ' s efficiency and dielectric imaging precision

    即在設計選擇運算元時，當最優個體適應度值大於設定閾值時則被保留；設計變異運算元時，當個體的適應度差別不大的情況下採用較大的變異概率。
  18. Principles of optimal bands selection are that spectrum characteristics have difference to the biggest among land types except information quantity of selected band is so big and correlation between bands is so little

    最佳波段選取原則除主要考慮波段的信息量要大，而它們之間的相關性要小這兩個因素外，還要使波段組合后地物之間的光譜特徵差異達到最大。
  19. After getting the standard difference and beta index of after risks, it gets three measuring figures : shape performance index, treyner performance index and jesen performance index through establishing the after feature line model, and compared them. finally, combining with the present situation of investment fund in china, using the investment fund performance evaluation research at home and abroad as the reference, adopting indexes such shape, treyner, jesen, stock net selection rate and c value, it evaluates the performance of investment funds in china in four aspectsxomprehensive performance measurement of investment funds. stock selection capacity. market opportunity seizing capability and investment portfolio ; and mares a case analysis on the ten representative funds in china

    最後，結合我國的投資基金的具體現狀，借鑒國內外同行對投資基金績效評估的研究，運用夏普業績指數、特雷諾指數、詹森業績指數、股票凈選擇率、 c值等指標，從投資基金的綜合業績度量、股票選擇能力、市場時機把握能力和投資組合分析四個方面對我國投資基金的績效進行了評估，並對在我國投資基金中有代表性的十隻基金進行了實證分析。
  20. Based on the difference of sandy land types on the spatial constructions, geostatistical texture was used to monitor desertification, and the discrimination degree of sample selection could be increased by using variogram texture to increase the difference of different kinds of sandy land

    基於不同沙地類型在地表空間結構上的差異，提出將基於地質統計學的影像紋理應用到荒漠化監測中，通過變異函數紋理來加大各種不同類別沙地間的區別，提高樣本選擇的分離度。
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