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Subsequently, TOBIT model was applied to the regression analysis for industrial structures effect on TE under the environmental restraint.

随后,本文以TOBIT模型回归分析了各产业结构变量对环境约束下技术效率的影响。

In comparison with the convex relaxation method, this approach is more simple in computation, and it does not introduce new variables and constraints in forming linear programming relaxations.

与凸松弛方法相比,本文方法在计算上更加简单和容易,且在产生线性松弛的过程中没有引入新的变量和约束。

A method of decomposition and reduction of the design variables and restrictive conditions in the optimal design is presented.

提出了优化设计中对设计变量和约束条件进行缩减和分解的方法。

The revised simplex method is used at first to calculate the optimal line extensions without integer constraints of the variables so that it can be determined which lines should be constructed.

第一步不考虑变量的整数约束,用修正单纯形法求解,由此可确定一部分线路是否需要建设。第二步在缩小的可选线路范围内进行整数规划计算,从而快速形成电网发展方案。

The chapter first studies the closedness, semicontinuity and cone semicontinuity of cone efficient point sets and cone weakly efficient point sets of the perturbed objective sets when both the objective maps and constraint maps are continuous and the constraint cone is semicontinuous.

进而还证明了当扰动变量形成Baire空间时,大多数(在Baire分类意义下)约束集或序受扰动的联合锥弱有效解集在连续意义下是稳定的。

A transportation engineering research and development program assessment method basing on DEA is formulated for prediction of efficiency index, production possibility set's restraint coefficient and inputoutput slack variable. Then use the reciprocal process of principle factor method to calculate the effective availability of research and development personnel and funds.

并采用构建基于投入的交通科技项目C^2R模型,分析投入因子的效率评价指数、生产可能集约束系数和投入/产出松弛变量,结合因子分析逆向求解得到投入指标的有效值,从而得出交通科技项目投入人员及经费的有效利用率。

Inthis work, by using the boundary element method and the joint theory, thewhole machine structure is equivalently modeled by beam elements and spring elements,the corresponding whole machine static model is constructed and the basic propertyparameters of the unit surface of the joints are introduced. The analysis software of thewhole machine static feature is worked out. The optimal design method based on thegenetic algorithm is proposed with the whole machine structure of multiple variablerestrains the optimal design software is developed as well.

本文运用边界元方法和结合部理论,将机床整结构用梁单元和弹簧单元进行等效,并建立相应的整机静力学模型,引入了结合面基础特性参数;编制了相应的整机静态特性解析软件;然后针对多变量约束的机床整机结构提出了用遗传算法进行优化设计的方法,并且编制了相应的优化计算软件。

Taking into account the ordinal character of variables ,statistical inference for bidirectionally ordinal square contingency tables with missing data is studied by proposing a loglinear model with restrictions.

在充分考虑分类变量有序性的前提下,通过建立有约束的对数线性模型研究有缺失数据的双向有序方列联表的统计推断问题。

Subsequently, TOBIT model was applied to the regression analysis for industrial structure's effect on TE under the environmental restraint.

随后,本文以TOBIT模型回归分析了各产业结构变量对环境约束下技术效率的影响。

Based on the ICM (independent continuous topological va riables and mapping transformation) method, a unified sm ooth model with weight objective and stress constraints was established for the topology optimization design of continuum structures.

基于独立连续拓扑变量及映射变换的拓扑优化方法应用于连续体结构,建立了统一的以重量为目标、考虑应力约束的连续体结构拓扑优化模型。提出基于综合评价的高效单元删除准则及算法。

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