逐步建立

This thesis studies the constructing and running processes of the virtual enterprise and proposes the virtual enterprise ontology oriented to the process modeling. It also represents the process model decomposed hierarchically described by logic situation calculus based on the virtual enterprise ontology and presents the corresponding organization model decomposed hierarchically for the virtual enterprise in the dynamic allying process.

本文主要通过对虚拟企业的结盟、构建和运作过程的深入研究，提出了面向过程建模的虚拟企业本体论，并在该本体论基础上，以逻辑情景演算形式化地描述了虚拟企业在结盟过程中逐步精化的过程模型，并建立了相应的虚拟企业分层递解组织模型。

Sean introduces you to the principles of creating hi-res poly models by modeling the head of an intricately detailed 4-eyed creature, based on a maquette.

在这个教学中，Sean逐步建起一个杂乱的，带有四眼的生物头部，使用一组初步设计的模型草图的图片（可参阅Neville Page的手工雕塑的教学），Sean向你介绍建立高分辨率多边形模型的原理。

Speaking Wednesday at a press conference at the Mauritius international meeting on Small Island Developing States, Matsuura said assessment missions are already in concerned countries taking steps towards the creation of the first regional component of the global system, in the Indian Ocean.

松浦12日在模里西斯召开的发展中小岛国家国际会议记者会上表示，相关国家的评估任务已经展开，将逐步在印度洋建立第一部份的全球预警系统。

Third, study on the environment of agricultural mechanize development in Shanxi province.

利用定性和定量的方法，研究了农机化同国民经济之间的关系；利用灰色关联度分析方法，研究了农机化对农业经济发展的影响；建立了农机化发展影响的多因素逐步回归分析模型，分析了影响山西省农机化综合作业水平的主要影响因素；对山西省未来农机化发展条件的变化进行了分析展望，具体测算了影响山西省农机化发展的相关指标未来发展水平。

Using successive regression and GIS technique, the regression equations of the precipitation and the topographical data in the upper-middle reaches of Yangtze River are established based on the 10 years daily、 mensal and annual precipitation of 613 meteorological stations, from 1992 to 2001. The topographical data include the elevation, aspect and slope form DEM of 4km resolution.

本文首先利用逐步回归和地理信息技术，最新的长江中上游613个气象站，1992～2001年10年降水资料，建立了日、月、年降水与4km分辨率的DEM高程、坡向、坡度等地形数据的回归方程，将降水量中地形影响部分分离出来。

The maj or obj ect of this paper is the medium.small size concrete dams that have been used for many years.They have the characteristic that the alteration of water height of reservoirs is unobvious and the dams, displacements are affected mainly by temperature.With a case,the method of stepwise regression is used to analyze the vertical displacement prototyDe observed data.Then regression equation is established,the relation of dam,s displacement with hydraulic pressure、temperature、time effect is analyzed and the displacement change rule is obtained,the dam'S displacement onlv dependent to temperature is received.According to the theory of Finite Elements Method,the quasi-stationary temperature field formula and temperature stress formula are deduced.The QTP program and TFEM3D program are written with FORTRAN.The same case is calculated through QTP program to solve the quasi-stationary temperature and through TFEM3 D program to solve the dam'S displacement and find tlle dam,s deformation rule.This rule is accordant with the regression,S resuIt.

本文主要针对运行期间库水位变化很小、坝体的位移主要受温度变化影响的中小型混凝土坝，结合工程实例，采用逐步回归的方法对垂直位移原型观测资料进行分析，建立回归方程，分析坝体位移与水压、温度、时效之间的关系以及位移变化规律，分析结果坝体位移只与温度有关，而基本上不受库水位变化和时效的影响；根据有限元原理推求了混凝土坝准稳定温度场公式和温度应力公式，利用FORTRAN语言编制出QTP准稳定温度场程序和TFEM3D位移场程序，对大坝的温度场和位移场进行计算，求出坝体结点的变温值和坝体结点位移值以及单元应力分量，分析得到大坝的变形规律与实测资料以及回归统计变形规律一致，说明对坝体准稳定温度场的研究是正确的。

Sample data were selected by standard deviation law and factor variables were selected by the method of principal components analysis, stepwise and enter regression analysis. The forecast precision of the model is 87.35%.

样本数据筛选采用标准差法，因子变量筛选采用主成分因子分析法、多元线性回归的逐步回归和强行进入法等方法，建立的多元回归模型预测总体精度达到87.35%。

The structure-toxicity relationship of 59 substituted benzenes was studied by the method of bayesian regularization neural network,and a QSAR model was built for environmental toxicity evaluation and prediction of substituted benzenes with lipid-water partition coefficient and four quantum indices.

利用贝叶斯规整化神经网络研究了59种苯取代的环境毒性和分子结构的关系。建立了基于脂水分配系数和4种量子指数的QSAR环境毒性预测模型。结果表明：该模型的预测性能超过偏最小二乘法和逐步线性回归方法，残差分析显示其稳定可靠，有望成为一种良好的苯取代物毒性的环境评价和预测的方法

Taken Qinshui Basin as an example a predictive model of gas content is established by multiple stepwise regression analysis, using Langmuir volume and gas saturation as its parameters. The result of multiple correlation coefficient testing, F-testing and t-testing indicates that the model meets the hypothesis testing of linearity and its matching effect is preferable.

以沁水盆地为例，运用多元逐步回归分析方法，建立了以Langmuir体积和含气饱和度为参数的含气量预测模型；复相关系数、F检验、t检验结果表明，该模型满足线性与方差齐性的假设，拟合效果较好。

This paper is to mainly discuss the following problems which are diffieult to be solved in commodity freight volume forecast for a period of time: Variable choice and multiple coorelations; Application of the principles of combining quantitative analysis with qualitative analysis; Selection of the remarkable variables by using Multistep Regression Method; Establishment of reasonable freight volume forecast model.

本文针对总货运量预测中较难解决的问题——变量选择和多重共线性，运用定性和定量相结合原则利用逐步回归方法定量挑选显著性变量，建立理想的货运量预测模型。此外，本文在评介货流研究一般方法基础上，根据多地区货物交流目的，探讨了货流预测的方法，提出用Frator法预测货流。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。