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覆盖因子
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  covering factor
     With the help of the ideas about cut set and covering ,a well-defined covering factor using inclusion degree theory describes the degree of condition attributes included in decision attributes,namely the degree of dependence of decision attributes on condition attributes .
     借助截集和覆盖的思想,并利用包含度理论定义了覆盖因子,刻画了条件属性包含于决策属性的程度,也即决策属性对条件属性的依赖程度,对模糊信息系统进行知识发现。
短句来源
  coverage factor
     An expanded uncertainty with coverage factor 2 of a new developed arrangement for free-field calibration of 12.7mm standard microphones by the reciprocity technique is better than 0.2dB with frequency range 2kHz to 40kHz.
     研制的12.7mm标准传声器自由场互易校准装置在2~40kHz频率范围内,自由场校准的扩展不确定度(覆盖因子为2)优于0.2dB。
短句来源
     Assessment of Vegetation Coverage Factor in Soil Erosion Model Based on ASTER Image Interpretation
     基于ASTER影像的土壤流失方程植被覆盖因子估计
短句来源
     Assessment of Vegetation Coverage Factor in Soil Erosion Based on Multi-spectral Image Interpretation
     USLE/RUSLE模型中植被覆盖因子多光谱影像计算
短句来源
     Aiming at the imprecision and uncertainty of risk factors,the Beyes theory is introduced into IT project risk management based on the traditional Rough set theory in this paper,then the concept and algorithm such as decision support,certainly factor,coverage factor are pointed out,and the risk decision rule mining model based on the combination of Rough set and Beyes theory is constructed. At last,an example is introduced to demonstrate the method and model above detailed.
     针对IT项目的风险决策过程中存在大量不确定、不完全信息等特征,论文在传统粗糙集的基础上,将贝叶斯理论引入到IT项目的风险管理中,提出了规则支持度、置信因子、覆盖因子等获取的相关算法,构建了基于粗糙集与贝叶斯理论相结合的风险规则挖掘模型,并通过实例对该模型进行了详细分析。
短句来源
     With the technical support of Remote Sense(RS)and Geographic Information System(GIS),the rainfall factor,soil erosion factor,slope and length factor and vegetation coverage factor of the characteristic agricultural economic development zone of Chaluhe of Yongji of Jilin Province were accurately estimated and the relationships among those factors were discussed,then,a revised Universal Soil Loss Equation(USLE) was used to calculate the soil erosion modulus of that zone.
     应用修正过的通用土壤流失方程USLE,在遥感(RS)和地理信息系统(GIS)技术的支持下,确定了吉林省永吉县岔路河特色农业经济开发区的降雨因子、土壤侵蚀因子、坡度坡长因子和植被覆盖因子,估算了这一地区的水土流失模数。
短句来源
  “覆盖因子”译为未确定词的双语例句
     RESULTS: The expanded uncertainty U_95 was 1 mg(P=95%,k=2).
     结果:扩展不确定度为1 mg,置信区间为95%,覆盖因子为2。
短句来源
     Magnetic field measurements of the primary star of 54CAM were made using the Stenflo Lindegren statistical analysis. Magnetic field strength B is (5 805± 629)× 10 -4 T and the filling factor is (19±5)%.
     采用 Fe 的多重线统计分析方法 ,测定出 54CAM主子星的磁感应强度为 ( 580 5± 62 9)× 10 -4T,磁场覆盖因子为 ( 19± 5) % .
短句来源
     This model includes five factors: coverage of farm land (Fc), precipitation (P), land utilization (Lu), little irritation works (He) and density of ditch (G).
     模型因子包括耕地覆盖因子(Fc)、降雨因子(EI_(60))、土地利用因子(Lu)、小型水利工程措施因子(He)以及沟壑密度因子(G)。
短句来源
     Under realistic values for the filling factors, spots can yield a sizable change of the apparent magnitudes (- ±0.2 magnitude in V band), colours (-0.10 in B - V) and the equivalent widths of LiI6708 (?)
     在适当的黑子覆盖因子下,恒星黑子能产生可观的活动星的视星等(V星等约±0.2星等)、颜色(B-V颜色约-0.1星等)和Li I λ6708 (?)
短句来源
     The major variations of surface soil(0~20 cm)properties were plant nutrients, which were affected by the vege- tative cover.
     不同林相对泥岩地浅层土壤(0~20cm)理化性质的差异,以植物营养元素与植生覆盖因子可充分说明(约占变异范围之62%)。
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  covering factor
The difference between the two approaches is around 5% for a covering factor of 50%.
      
  coverage factor
The compounds had an estimated level of impurities of 100 ± 100 μg · g-1 (expanded uncertainty with a coverage factor of 2).
      
For the surface density of implanted Sb atoms the unweighted mean value of the means of four data sets is 4.81×1016?cm-2 with an expanded uncertainty (coverage factor k=2) of 0.09×1016?cm-2.
      
For the isotope amount ratio R (121Sb/123Sb) the unweighted mean value of the means of two data sets is 1.435 with an expanded uncertainty (coverage factor k=2) of 0.006.
      
GUM Workbench software was used, and resulted in a mercury mass fraction of 1.58±0.11?mg?kg-1 (with coverage factor k=2.2, 95% probability) related to dry mass, submitted in the certification exercise.
      
The values are unweighed arithmetical averages of accepted results and their uncertainties are combined uncertainties (coverage factor=1).
      
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Matching filtering technique is one of the effective methods to enhance linear structures in computer processing of remote sensing images. The templates of different sizes and properties are used for convolution processing of images in order to detect the linear image features. Correct selection of template parameters has direct influence on the result and cost of image processing. In a conventional approach values of template element are variable with places and have to be tested with computer in each particular...

Matching filtering technique is one of the effective methods to enhance linear structures in computer processing of remote sensing images. The templates of different sizes and properties are used for convolution processing of images in order to detect the linear image features. Correct selection of template parameters has direct influence on the result and cost of image processing. In a conventional approach values of template element are variable with places and have to be tested with computer in each particular cases. On the basis of experiment it is suggested that apart from template feature, values of template element mainly depend on topographic relief (roughness of terrain surface) and vegetation cover in a studied area. A quantitative equation for selecting optimum parameters of matching-filtering-template for linear feature detection on remote sensing images is proposed.

本文认为:遥感图象的计算机数字处理中,检测线性影象特征效果的关键是匹配滤波模板参数的最佳选择。这主要与模板性质、所处理图象的地形起伏以及植被覆盖状况等关系密切,可用下式表示:当取-1≤b≤0时a=μ/H·K (1)效果最佳,式中a,b为模板元素;μ为模板因子;H为地表粗糙度,K为植被覆盖因子。当b取任意值b'时a'=1.5a+0.333b'~2 (2)也能取到较佳效果。式中a由式(1)计算。

The paper presents a sensitivity experiment in order to study the influence of the inhomoge-neous surface conditions on the PBL climate,using a coupled model with flat terrain and clear skyand calm day in an undisturbed synoptic condition,in which the hydrostatics atmosphere modeland the soil model were developed by Nickerson et al.and McCumber et al.,respectively.The re-sults show that it is highly sensitive to changes of the vegetative cover and background windspeed,and less to the roughness of the vegetation....

The paper presents a sensitivity experiment in order to study the influence of the inhomoge-neous surface conditions on the PBL climate,using a coupled model with flat terrain and clear skyand calm day in an undisturbed synoptic condition,in which the hydrostatics atmosphere modeland the soil model were developed by Nickerson et al.and McCumber et al.,respectively.The re-sults show that it is highly sensitive to changes of the vegetative cover and background windspeed,and less to the roughness of the vegetation.

模式是以 Nickerson 等(1986)的静力大气模式与 McCumer 等(1981)的土壤模式相耦合为基础,而且仅考虑平坦地形和无天气系统扰动的晴朗天气条件作敏感性试验,以便研究非均一下垫面状况对行星边界层气候的影响。试验表明,模式计算结果对植被覆盖因子和背景水平风速十分敏感,然而对植被粗糙度则不大敏感。

A model with vegetation effect parameterized is developed for studying lake-landbreeze. The dynamic framework is the improved meso-β scale model of Nickerson et al.(1979)in which the soil model by McCumber et al.(1981)and the vegetation parameteriza-tion scheme by Deardorff(1978)are included.Then,the governing system is closed by usingthe ttirbulence parameterization of Therry et al. (1983)and the improved radiation parame-terization by Mahrer et al.(1977).FInally,a sensitivity experiment is conducted in the...

A model with vegetation effect parameterized is developed for studying lake-landbreeze. The dynamic framework is the improved meso-β scale model of Nickerson et al.(1979)in which the soil model by McCumber et al.(1981)and the vegetation parameteriza-tion scheme by Deardorff(1978)are included.Then,the governing system is closed by usingthe ttirbulence parameterization of Therry et al. (1983)and the improved radiation parame-terization by Mahrer et al.(1977).FInally,a sensitivity experiment is conducted in the lake-land breeze of Lake Taihu to the change of the vegetation cover asgire, It is shown that thevegetation coverage has an obvious influence on lake-land breeze.

建立一个包含植被影响多数化的二维湖陆风数伍模式。它以改进的Nickerson(1979)二维中-β尺度数伍模式为动力学框架,并加入McCumber等(1981)的土壤模式和Deardorff(1978)的植被参数化方案,,绒后以Therry等(1983)的湍流参数化和Mahrer等(1977)改进的辐射参数化方法闭合此控制系统。最后,以太湖湖陆风对陆地植被覆盖因子作了敏感性试验,结果表明植被覆盖对湖陆风的影响是明显的。

 
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