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Now people pay more and more attention to the safety of damaged ships to reduce the loss of life and property and environmental pollution. So how to predict structural residual strength effectively and set up a safety assessment method after ship damage has become an imperative problem. Generally speaking, there are a lot of uncertainties and complicated mechanisms existing in this research field; we have to simplify our model and methods reasonably.

舰船结构的自然损伤和偶然损伤对结构的安全性产生巨大的影响，一旦引发海损事故，不仅造成巨大的经济损失和人员伤亡，而且对海洋环境产生严重的污染，因此如何有效地预测舰船损伤后的结构剩余强度及建立安全评估机制成为迫切需要解决的问题。

Construction methods of large-span reticulated cylindrical shell are studied in this paper, based on variety of existing spacial structure construction methods. A new type of construction method that the structure is formed integrally by sliding support is bring forward in literature [1]. Construction process run-after computation is conducted by Ansys program, and a new type of hinged joint is obtained.

本文在概括总结了现有的各种空间结构施工方法的基础上，着重研究了大跨度柱面网壳结构的施工技术，对文献[1]提出的新施工方法——柱面网壳支座水平滑移结构整体成形施工法进行了施工全过程的跟踪模拟和结构内力分析，给出了具体施工实施方法，并提出了一种可单自由度转动的新型铰接节点。

The results show that: comparing the contrast community(formed by enclosure management for restoring vegetation naturaly on sand-dune for 7 years),some positive aspects of the artificial communities were showed as follows: 1 The level of the species diversity was more higher;2the vertical structure was so complicated that the surface of sand-dune was covered by multiple layers of plants;3 t...

结果表明：1利用植物再生沙障治理流动沙丘可以形成具有多物种、多层片、多层次垂直结构的沙障群落，其水平结构呈网格状沙障结构与障间小群落在空间上镶嵌互补，均衡分布的格局，具有很好的防风固沙和植被恢复效果；2再生沙障建植后第5年开始，沙障群落进入了衰退时期，适时采取科学的经营管理措施对于维持沙障群落的稳定，保障其效益的长期发挥是非常重要的。

In the meantime, the peak value of structure resonance contributes little to the response. The distribution of vertical displacement and wave bending moment of transverse section, which is along the direction of the floating structure length, appears unsymmetrical character. According to the wave scatter diagram of BI sea area of northwest pacific, which is in fairly calm condition, the amplitude values of long term prediction of wave bending moment in midsection and deck bending stress are quite large.

根据西北太平洋B1海区波浪散布图计算的波浪弯矩和舯剖面甲板弯曲应力的长期预报值是相当高的，日本的箱式浮动机场的概念设计中，浮体结构设置在离岸很近的平静水域且外围设置了防波堤，这可能是出于改善超大型浮体结构的运动性能和为了满足结构强度要求。

In this paper, we calculate the energy band structure of the phononic crystal by making use of the method of plane wave expansion and investigate the influence of crystal structure, the properties of elastic units and the filling and shape of scatterer on the band gaps in an attempt to provide theoretical guidance to the preparation of phononic crystals.

本文利用平面波展开法计算声子晶体的能带结构，研究声子晶体的结构，组元的性质及散射体的填充率、形状对能带结构的影响，力图为制备性能良好的声子晶体提供理论指导。

To resolve the design difficulties caused by small cross-section, low height of the bridge structure, the key technique problem to the bridge structure should be carried on research and analysis, such as whole calculation model, considering foundation combined action , the reasonable rigidity match to the joint of the girder and pier ,inner force redistribution caused by the system conversion ,the forecast to long-term deformation after building , stress analysis and tectonic steel bar of the anchored serration block , the influence of foundation settlement and anti- earthquake measures . To acquire feasible and reasonable technique parameters and provide the full design basis, according to analytical results adjust and optimize the bridge structure design.

为解决桥梁结构要求截面小，高度低等带来的设计困难，需对该结构的关键技术问题如考虑基础共同作用的整体计算模型、梁墩间的合理刚度匹配、体系转换产生的内力重分布、成桥后的长期变形预测、锚下锯齿块应力分析及配筋构造、基础沉降影响及抗震措施等进行研究分析，以获得技术可行、经济合理的技术参数，为设计提供充分的依据，根据分析结果调整优化桥梁结构设计。

It introduces the advantages,choice of material, economic span and applied situation of fast-developed door-style soft steel structure recently in China,and points out the defects in design and construction.

介绍了目前发展较快的门式轻钢结构的优点、材料的选择、经济跨度以及目前门式轻钢结构在我国的应用情况，指出了设计与施工上存在的不足，最后进行了总结，以提高人们对门式轻钢结构的认识。

The probability of failure of uncertain structures with stochastically varying properties subjected to dynamic random loads is studied.

对受有动态随机载荷的含有随机参数的不确定结构的失败概率或可靠度进行了研究，使之在工程实际中固有的结构参数的不确定性以及其对结构响应和可靠性的影响进行了评价。

Researchment on Cable Dome begin with the Concept Design, which including geometric stability, ratio of rise to span, space between struts, height of struts, space between strop, inclination between ridge cable, etc.

对索穹顶结构设计技术的研究首先从概念设计开始，概念设计包括结构的几何稳定性判断、跨度和矢高的关系、压杆的间距、压杆的高度、环索的间距、脊索间夹角等，后面几个部分其实也可以归结为结构几何参数的优化问题。

The research improves the architecture stability starting with studying the intrusion detection architecture on the base of CVE list; the reasoning under uncertainty was utilized in superstratum expert system; the character of system structure and denial of service attacks was considered and concerning arithmetic is designed in order that system can make full use of the information .

本文以CVE列表为基础，从入侵检测系统的体系结构入手，改进了结构的稳定性；对上层的专家系统采用不确定性推理；并考虑系统结构和拒绝服务攻击的特征，设计了关联算法，使系统尽可能的挖掘可用的信息。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。