超空间

There exits several MDO algorithms. But they are in our opinion either nonefficient or complicated. So we devised an algorithm called Subspace Approximation Optimization . In the SAO algorithm, the whole system is decomposed into one system-level optimization and several disciplinary optimizations so that a large and complicated problem can be divided into several easy-solving sub-problems. The coupling relationships and the coordination among disciplines are presented by equality constraints and these equality constraints are assigned to relevant disciplines. The optimums of design variables in system level optimization are transferred to discipline level optimization. The optimums of design variables in discipline level correspond to the point that is the nearest to the optimums of design variables in system level. If the optimums of design variables in system level are out of feasible region of discipline 1eve1, linear constraints can be built in the system level optimization using the design variable optimums obtained by the discipline level optimization. The system level optimization would improve the design of the whole system with these linear constraints.

目前，国内外已经发展出了多种飞机多学科设计优化算法，本文的重点是针对协同优化算法的不足，提出了子空间近似优化算法(Subspace ApproximatingOptimization，SAO)，SAO算法中，整个系统的优化问题被分解成一个系统级优化和若干学科级优化，而各个学科之间的耦合与权衡关系则被当作等式约束，这些等式约束将被分配到各个学科级优化中去，系统级优化的任务是寻找整个系统的最优解，而学科级优化的目标函数是以系统级优化分配下来的设计点为圆心的超球半径的平方，因此，如果系统级优化分配下来的设计点在学科级优化可行域内，则学科级优化目标函数为0，反之，则学科级优化的最优点是系统级优化当前设计点距离可行域最近的点。

On the approximate fixed points of commuting nonexpansive maps in hyperconvex space s

本文研究超凸度量空间的一些性质，给出更深入的结果及反例。

Mechanism of high despersity and dispersion stability of polycarboxylic superplastizers can be explained well with steric effect.

用空间位阻效应可较好解释该类超塑化剂对水泥分散及分散稳定性作用机理。

They are hidden in supermaterial (or: beyond material) to control human.

它们藏在超物质空间当中来操纵人。

Some problems are discussed in this paper which is"spale-restriction","time-restric- tion"and"cross-section-restriction on the transuranium s limit".

本文讨论了超铀元素存在的&空间限制&、&时间限制&和&生成截面限制&。

The results are following:(1)We investigated the influence of the positional isomeric effect on structures.Due to the less space-crowding,it is easier for 3-pytpy to behave as bridging ligand than 2-pytpy under the same reaction conditions,while,it is easier for 2-pytpy to function as tridentate chelating ligand to construct supramolecular structures.

研究结果如下：(1)研究了两个吡啶取代三联吡啶配体的位置异构效应对配合物结构的影响。3-pytpy配体比2-pytpy具有更小的空间位阻，在相同的合成条件下容易以单-三齿桥联方式配位；而2-pytpy更易以三齿螯合形式配位，通过π…π堆积作用形成超分子结构。

A modification of the ship's hyperdrive that increased its performance to class two allowed for more frequent victualing stops, and some of that cargo space was converted for hangar use.

该船的一个变种的超光速引擎的性能达到2.0级，允许它进行更多的装货停靠，而部分货舱空间被改作了机库。

The college towns are gradually characterized with diversified construction styles, compacted space allocations and supersized construction scales, but some of the college towns have run into various problems during and after the construction period, which disjoints the ideals from the realities and calls for active reflections and the countermeasures aimed at these issues.

大学城也逐步呈现出建设模式多样化、空间布局密集化、建设规模超大化的特点，但部分大学城在开发建设以及后期的发展运作中凸现出了种种问题，造成了理想与现实的脱节，针对这些问题，需积极的做出反思，探究其解决对策。

Arch dam, which is fastened to the base rock, is a high_order, hyperstatic, spacial body case structure. It has not only arch function but also girder function, but its main loads are passed to each dam abutment by means of arch function.

拱坝是固结于基岩的高次超静定空间壳体结构，既有拱作用又有梁作用，其主要荷载是通过拱的作用传到两岸坝端。

Arch dam, which is fastened to the base rock, is a high_order, hyperstatic, spacial body case structure. It has not only arch function but also girder function, but its main loads are passed to each dam abutment by means of arch function.

拱坝是固结于基岩的高次超静定空间壳体结构，既有拱作用又有梁作用，其主要荷载是通过拱的作用传到两岸坝肩。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。