使转化

The lexicographically stratified method for multi-object optimal electric power network planning is presented according to the problem encountered in the research on multi-object electric power network planning.

针对目前研究大规模多阶段多目标电网规划遇到的问题，提出了多目标电网规划的分层最优化方法，使得计算量大幅度降低，避免了多目标函数处理的困难；同时提出的改进最优切负荷模型更易于计算缺电成本，使可靠性指标转化为经济性指标时方便实用，算例证明了本文算法的有效性。

With religious accumulated income, some of the Saintly linage converted these revenues into commercial capital and engaged in commercial activities, thereby made the Saint linage became an influential economic entities.

部分门宦将这些收入的一大部分转化为商业资本进行投资，从事商业活动，从而使门宦又成为具有影响力的经济实体。

Linear Fractional Transformation is adopted to translate the control of perturbation to the control of disturbance, then cost index is augmented, and with the min-max method, a robust receding horizon control law is derived. The sufficient conditions for the existence of the control law and closed-loop stability are also presented. The result is extended to time-invariant system with an infinite horizon, and its consistence with the robust control based on the concept of Quadratic Stability is verified.

首先利用线性分式变换，将摄动系统的鲁棒控制问题转化为对扰动系统的鲁棒控制问题；然后通过对性能指标的扩展，利用min-max方法，得到了鲁棒滚动时域控制律，并给出了其存在和使闭环系统渐近稳定的充分条件，并将结果扩展到对定常系统时域无穷的的情况，指出其与现有的基于二次型稳定概念提出的鲁棒控制的一致性。

Using this method, the controller design for performance and robustness can be designed separately, which has the potential to overcome the conflict between performance and robustness in the traditional feedback framework. Third, to make the vehicle meet the performance index in full flight envelop, a H∞ gain-scheduled controller based on Linear Varying Parameter system are designed. A LPV plant with a linear fractional dependent variable can be represented by upper LFT (Linear Fractional Transformation) interconnection.

通过把非线性系统简化为了线性变参数系统，再有通过线性分式变换将LPV系统转化为一个线性定常系统和不确定性组成的LFT互联形式，使之转换成为一个经典鲁棒控制问题，然后通过求解一组线性矩阵不等式得到变增益H_∞控制器。

To prove that the cloned DNA fragment can express tryptopanase,a new plasmid pET28C-TnaA , in which the cloned DNA fragment was located downstream of T7 promoter on pET28c was constructed and transformed into host BL21(DE3),a BL21 lysogen of bacteriophage DE3 in which the only promoter known to direct transcription of the T7 RNA polymerase gene is the lacuvS promoter ,which is inducible by IPTG.

为了证明质粒上的基因能表达出有活性的色氨酸酶，将这个DNA片段克隆到PET28c质粒的BamHI和HindⅢ位点上，使该片段受T7 RNA聚合酶的启动子控制，然后转化噬菌体DE3的溶源菌BL21(DE3)。

During the transformation, there are two main forces: modern investment theory and IT. Modern investment theory led investors to accept the idea of risk management. Besides, it brought the instruments measuring risks and pricing risk assets, which promoted market participant to understand derivatives very well. IT provided powerful technical support for massy calculations which is necessary for risk measurement and pricing and for instant reaction capacity to market opportunities.

在这一转化过程中，现代投资理论和信息技术是两大主要推动因素，现代投资理论不仅使风险管理的理念深入人心，还具体提供了风险度量和风险资产定价的工具，增强了市场参与者对衍生金融工具的认知能力，信息技术则为风险度量和风险资产定价所需的深度计算，以及对市场机会的迅速反应能力提供了强大的技术支持。

The new updating method is to minimize the error matrix norm under the condition of a quadratic constraint under which the mode orthogonality should be satisfied and the mass and stiffness matrices should be fitted into the eigen equation.

该方法是在质量矩阵和刚度矩阵满足正交性条件和特征方程的约束下，使修正矩阵的范数最小，将模型修正问题转化为一个带二次约束的最小二乘问题。

Based on the method of matrix transformation used in the compound material mechanics, the anisotropic flexibility matrix of the anisotropic sand with a certain stress state is transformed to be an isotopic one of a certain isotropic reference material with the corresponding stress state, and a corresponding stress matrix is obtained simultaneously.

借鉴复合材料力学中矩阵转换的数学方法，将各向异性砂样的柔度矩阵转化为各向同性等效参考砂的柔度矩阵，同时导出与其相当的应力状态的表达式，以使对各向异性岩土材料的分析可转换为对各向同性状态进行分析，由此可将以前基于各向同性假设的强度条件能够用于各向异性土体。

It is found that their thermal conversion pathway of mercaptan, sulfides and disulfides can change after the addition of few methanol.

研究发现，少量甲醇添加到反应体系中可以使硫醇、硫醚、二硫化物热转化路径发生变化。

Homing project research of parafoil system on optimal control was developed. And the characters of it were analyzed and summarized. To solve the optimal control problem, some methods about pre-solver analysis and treatment were put forward, such as moving equations translated into frame of wind and normalized.

在最优控制的求解中，提出了向风坐标系转化、无量纲化等解前分析的思想，简化了计算，方便了加权因子的选择，使目标点可达与不可达的翼伞系统归航轨迹最优控制问题得到了统一的求解。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐