index difference 中文意思是什麼

index difference 解釋
折光率差
  • index : n （pl es dices ）1 索引。2 指標，標準，標志。3 示[食]指 （＝index finger）。4 指數。5 【印刷】指...
  • 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. Then based on the method of dimidiate pixel model, the current model is improved, and the model of deriving vegetation fraction from normalized difference vegetation index ( ndvi )

    然後在像元二分模型的基礎上對已有模型進行改進，建立用ndvi歸一化植被指數估算植被覆蓋度的模型。
  2. And also expounding that the first - fight - time can give explanation to the advanced techniques, the estimating ranges of first - fight - time in alcc estimating are expanded. the type - changed index and type - difference are selected as dummy variables. it has discussed mearsursion of type - changed index, and three criterions and three methods to set models including the dummy variable are got

    說明性變量選取：說明性變量的選取基於費用因子分析，特別討論了首飛時間對費用預測的影響，論述了首飛時間能對技術先進性作出說明，拓寬其在費用預測中的作用，選取改型指數虛設變量，研究了改型的量化方法，提出了判別準則和實現方法。
  3. To improve understanding of the processes of heterogeneous land surface - atmosphere interaction, the utilization of satelli te remote sensing is indispensadle. in this paper, with the aid of satellite remote sensing and fiend observational data which observed during intensive observation of huaihe river bain energy and water cycle experiment hubex in 1998, the surface albedo, ndvi normalized difference vegetaton index and surface temperature in regional scale of hubex could be derived. then, the distribution of regional energy balance components could be estimated. this wor provided the physical foundation for the numerical simulation of the huaihe river basin energy and water pro cesses, and is important for us to further analyze the regional distribution of surface characteristic parameters ad energy balance components with the change of the weather situation in hubex in 1998. our work is still in a developing stage, some methods of retrieval in the paper should be improved further

    利用1998年淮河流域加密觀測試驗hubex iop期間的資料，進行淮河流域能量平衡的參數化方案的研究，用noaa衛星的avhrr資料建立了試驗區地表特徵參數及能量平衡各分量的參數化方程，並對衛星遙感反演結果和試驗觀測值進行了對比，為淮河流域能量和水循環的數值模擬提供了物理依據。
  4. In comparing as above exemple, if expire by december when, this market index is actual it is 1130 bits, you can get 30 price difference of the dot are compensated, that is to say you earned 30 to nod

    比如上例中，假如12月底到期時，這個市場指數實際是1130點，你就可以得到30個點的差價補償，也就是說你賺了30個點。
  5. 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
  6. The obtained results do not support a major gene for body mass index in chinese, the discrepancies between our study and previous studies may result from ethnic difference between chinese and other populations ; the general model provides the best fit to the data, while the environmental model is the second parsimonious model, perhaps due to complex mode of body mass index inheritance ; a moderate heritability estimate is found for body mass index ( h2 = 0. 313 ), lower than that of other populations, this is presumably due to the fact that aside from the influence of genetic bases, body mass index is strongly influenced by environmental factors and that there is a low proportion of obese individuals in samples ( only 4. 1 % individuals have body mass index > 30 )

    分離分析的結果表明， （ 1 ）體重指數不存在主基因分離，不同於在其他非中國人群中檢測的結果，說明存在種群差異性； （ 2 ）一般模型提供了最合適模型，環境模型是次之的嚴格模型，可能由於體重指數遺傳模式的復雜性所致； （ 3 ）中國人群中體重指數具有適中的遺傳率（ h ~ 2 = 0 . 313 ） ，低於其他人群中的結果，這是由於體重指數除了受遺傳因素影響外還受環境因素影響及樣本中低比例的肥胖個體（ 4 . 1的個體bmi 30 ）的原因。
  7. In order to measure the contribution of the index in distinguishing the sample classification, this paper defined the concept of index ' s categorization weight, point out the difference in such aspects as concept, properties, determining method, and application between the categorization weight and the importance weight of the index

    摘要為了度量指標對區分樣本類別所作貢獻的大小，本文定義了指標分類權重的概念，論述了指標分類權重與指標重要性權重在概念、性質、確定方法及用途等方面的區別。
  8. In views of hebei province ' s existing situation of rural economy, and with reference to the civil and abroad achievements in scientific research on the field, this thesis choose two sample groups - 11 cities and 138 counties of hebei province in light of division into districts and analyses the rural economy difference of hebei by using total and mean index, the social product gross of rural, rural labor productivity, the mean net income of rural, and methods of variation coefficient, comprehensive index and so on.

    針對河北省農村經濟發展的現狀，本文借鑒國內外區域經濟差異的有關研究成果，以現行行政區域為基礎，通過截取河北省11個地市和138個縣（市）兩組不同的樣本，選取總量指標農村社會總產值，人均指標農村人均社會總產值、農村勞動生產率、農民人均純收入，運用變異系數、綜合指數等方法對河北省農村經濟的差異進行分析。
  9. The third chapter is one of the most innovative parts of this thesis. grey relational analysis of grey system theory is introduced, and the theory is applied to index time difference analysis. meanwhile, grey wave forecasting of grey system theory is explained, and the method is applied to economic cycle index forecasting

    第三章介紹了灰色系統理論中灰色關聯分析的方法，並將該方法應用到指標時差分析中；闡明了灰色系統理論中灰色波形預測的方法，並將該方法應用到經濟循環指數預測中。
  10. After analysis of tm / etm + data ' s advantage over the forest change detection, tasseled cap transformation, principal component analysis and normalized difference vegetation index were chosen to enhance the vegetation spectral information. expert classification system was adopted to extract the main tree species in the littoral shelter forest

    在分析etm +數據在森林資源監測中的優勢的基礎上，通過纓帽變換、主成分分析和植被指數法增強植被光譜信息，結合專家分類系統對沿海防護林主要樹種進行提取。
  11. Then displacement fields are researched via the finite element model that accords with actual process of jacked pile. and the effects of displacement fields caused by difference modulus ratio, friction between pile and soil, possion ration of soil and soil index of c and are put forward

    接著建立了能夠模擬沉樁連續貫入的有限元模型，利用該有限元模型分析了樁土模量比、樁土界面接觸剛度、樁土界面摩擦、泊松比以及土體的c和指標等因素對沉樁擠土效應的影響。
  12. By the comparison of calculation result with the tests result, it was concluded that the method to calculate the year temperature difference and day temperature difference from weather data was feasible. by this method, it was got that the statistic parameters of combined temperature difference in base period and the reliability to different anti - crack index was calculated the combination of thermal effects and load effects was considering in this paper

    對多年氣象資料進行了統摘要浙江大學博士學位論文2003計分析，將其轉化為結構的年溫差和日溫差，並與實測值進行了比較;在此基礎上得到了設計基準期內的結構組合溫差統計參數以及不同抗裂指標所對應的可靠度。
  13. By means of the calorimetric experimental results and the temperature dependence of heat capacity differences, four kinds of temperature dependences of configurational entropy, dielectric relaxation index and cooperatively rearranging region are studied, on the basis of configurational entropy theory on cooperatively rearranging region in disordered amorphous materials by the methods of the relationship between configurational entropy and heat capacity difference, and the equation of relaxation time with activated energy barriers

    摘要基於無序非晶材料「關聯重排區域」的構型熵理論，運用構型熵與熱容量差的關系式、弛豫時間與活化勢壘的基本公式，及聚合物量熱學的實驗結果和熱容量差與溫度的基本關系，研究了4種情況下構型熵、介電弛豫指數和關聯重排區域大小的溫度變化關系。
  14. Then considering the difference of the composite stock index and single stock, for example, the single stock has price limit, it continues to quote mdh to study the price - volume relation of the single stock too

    並在此基礎上，鑒于股指與個股的差異，比如個股有漲跌停限制等，引用混合分佈假說進一步考察了基於個股的股價波動與交易量之間的關系。
  15. The correlativity between theoretical value and the actual value of soil moisture content in 93. 3 percent of observational stations is distinct. all this shows that calculational methods of zndx is more reason for studing the flood or drought of northwest chine. ( 2 ) index _ z and index _ k ca n ' t objectively remark extent of drought and flood event. both ca n ' t distinguish the difference of some years which have the same precipitation and have different temperature, awc

    西北地區10個代表站三種指數值的對比表明， z指數與k指數僅反映西北地區同期的降水，而zndx指數不僅反映了同期降水狀況，且與同期氣溫及前期氣候濕潤度有關。 （ 2 ）通過z 、 k與zndx指數對西北地區旱澇等級的對比研究表明， z指數與k指數對西北地區旱澇等級的確定不具有客觀性。
  16. Subordinate function of evaluation index is determined by means of triangle whitenization function. the potential difference of the area is evaluated through gray cluster. conceptual model that estimates energy of the science & technology productivity is built up relying on the thought of the strength potential energy for support

    第三部分著重定量研究，以長三角三省為實例，用三角白化權函數的灰色聚類評估評價區域的位勢差，並借重力勢能的思想構建了科技生產力流動勢能能量測度的概念模型。
  17. The finite difference beam propagation method ( fd - bpm ) can simulate the performance of the waveguide accurately. single mode rid waveguide structure parameters are derived by variational - effective index method ; fd - bpm and its transparent boundary condition ( tbc ) are concerned, and then the eim used to transfer a 3d waveguide to 2d waveguide is analyzed ; finally we summarize the characteristic of the y branch

    本文先利用變分有效折射率法推導出滿足單模傳輸的脊形波導結構參數;接著介紹了有限差分束傳播法及求解的透明邊界條件，同時分析了將三維結構轉化為二維結構的有效折射率法，最後對y分支的特性進行了模擬。
  18. The particularity of large - section rib waveguide with large refractive index difference in soi results in some special characteristics distinguished from other waveguides, which need elaborate explanation in theory. the large bent radius of the rib waveguide hinders the device performances from improving further, and confines the device to small channel number and simple functions

    Soi材料上大折射率差脊形波導結構的特殊性帶來了一些特殊的性質，必須從理論上深入地探討；脊形波導大的彎曲半徑在某種程度上制約了soi波導器件性能的提高，使得多通道、多功能器件的發展受到限制。
  19. Owing to their unique optical properties, such as low loss and large refractive index difference between silicon and silicon oxide, soi structures can not only be used to fabricate smart integrate photonic devices, but offer the ability to integrate photonic devices into the cmos integrated circuit ( ic ) process

    同時，它也具備許多優越的光學特性，比如低損耗（在通信波段） 、高折射率差，這使得它不但能用來製作靈巧緊湊的光集成器件，也為利用cmos微電子工藝實現光電集成提供了一個很好的平臺。
  20. In developing the planar lightwave circuits, the coupling loss between a waveguide with a high refractive index difference and a single mode fiber is considered. a novel spot - size converter based on a y - branch structure is proposed and numerical simulation results indicate that it can reduce the coupling loss effectively with low polarization dependent loss and good fabrication tolerance

    在平面波導光器件研製中，提出了高折射率差二氧化硅波導與光纖的新型低損耗連接，與現有波導單側變窄的結構相比較，有效的降低了連接損耗，同時具有偏振相關損耗低，工藝容差性好的優點。
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