查询词典 hilbert problems

In this background, according to professional practice and emploment,the author discuss the main problems of Social Work in china and the lodestar that we should follow to settle these problems and how to settle these problems.

本文正是在这种背景下，从社会工作专业实习和就业的角度探讨了当前我国社会工作专业教育存在的主要问题、解决这些问题应遵循的指导思想以及解决这些问题的措施。

Ant Colony Algorithm is a new developed bionic optimization algorithm, which simulate the ants'finding food process. Because of its simple mechanism, plus-feedback parallelization, strong lustiness and excellent distributed compu- tational mechanism, it has shown its excellent capability and huge developing potential in solving many complicated optimization problems, and it has been successfully applied to production problem such as scheduling problems and routing problems. But it also has some disadvantages, it need longer searching time than others and tend to precocity and stagnation.

蚁群算法是一种最新发展的模拟昆虫王国中蚂蚁觅食行为的仿生优化算法，该算法采用了正反馈并行自催化机制，具有较强的鲁棒性、优良的分布式计算机制、易于与其它方法结合等优点，在解决许多复杂优化问题方面已经展现出其优异的性能和巨大的发展潜力，并已成功地应用于诸如生产调度、布线等生产问题。

This paper investigated 44 rich families and 33 general fmilies menta l health condition with PHI,the results were:the rich famlies had more mental pr oblem then the general families,the husbands in the rich expressed sensitive,com petitive,obstinate character;the wife in the rich expressed suspicious,fancy and somatic features There were 66.7%husbands and 61.9%wives in the rich who had mental problems,39.1%husbands and 42.4%wives in the general family had mental problems,and 34.1%children in the rich and 13.6%children in the general family had mental problems.

张同延 ，何雪娟对44例富商和33户普通家庭进行精神健康对照研究，使用精神健康测验进行调查，结果显示，富商家庭存在比较严重的心理卫生问题，具体表现出敏感多疑、好与人竞争，人格上具有固执生；富商妻疑心、脱离现实，对心理挫折常常采用躯体化的心理防御机制。富商群体中出现心理问题和心理障碍为66.7%、富商妻为61.9%；普通家庭男性为39.1%，其妻为42.4%；富商子女为34.1%，普通家庭子女为13.6%。

Three- Nong problems, the problems about countryside, agricultur e and peasant are the key problems in the development of economics and society of our country.

"三农"问题是当前我国社会和经济发展中的热点问题，城市化发展过程中的"三农"依然是农村社会和经济发展的制约因素之一。

Heuristic algorithms are needed to solve the NP-complete problems, which is the method of this paper to study the packing problems. On the basis of lots of tests and the wide research on the packing problems, a heuristic algorithm based on objective and orthogonal decomposition of space is developed to solve the non-guillotine packing problem.

沿着这一优化问题解决的路经，在研究分析现有布局启发式算法的基础上，通过大量布局实验并不断地总结，提出了基于目标和空间正交分解的布局启发式算法，解决布局过程中的非一刀切布局问题。

This paper presents a method to embed the original problem into separable parametric optimization problems and proves that the optimal solutions of the original problems are in the set of solutions of separable parametric optimization problems.

本文把原问题嵌入到可分的参数规划问题中，并证明了原问题的最优解包含在可分的参数规划问题的最优解集中。然后从最优解集中挑出原问题的最优解。

The first part: The author summarized the problems of evaluation from five points of view---the aims of evaluation, the problems of perfunctoriness in evaluation, the corruption in evaluation and the evaluation conclusion, and pointed out the dangerous result from these, we hope that government and the department of educational administration could pay close attention to these problems.

第一部分：对评估中存在的问题，从评估的目标定位、评估中的应付、腐败和权力寻租现象以及评估的结论五个角度进行概括总结，并指出因此而造成的危害，希望能引起国家和教育管理部门的关注。

Although the main length of the thesis makes an elaborate dissection of the specific expression problems , it does not attend to each and every aspect like bookkeeping account, but emphasizes on the important analysis of the creative parts of the works, such as the language combination problems of the three forms of plot of a play , record and experiment, the theme selection problem of the creation, and narrative pattern of the works, the basic theory problem related to the thesis is the analysis of the theory problem closely related to creation practice, and make more specific elaboration concerning with how to grasp these theory problems in the graduation creation, such as problem of the relationship between how to grasp the theme idea of the works and humanity in the author's graduation creation "April 20th,2008".

论文所涉及到的基本理论问题，是对与创作实践紧密相关的理论问题做以分析，并就如何在毕业创作中把握这些基本理论问题做了更为具体的阐述，如我在毕业作品《2008年4月20日》中是如何把握作品的主题思想与人性揭示之间的关系问题。

Firstly, urban space's development course and actuality of space's patterns are reviewed contrastly in the paper abroad and home. Then, existing problems of urban space at present in our country are discussed stressly:"Ten Faulty Expressions in Writing" of urban construction;"the Movement of Beautifying City" in china; the problem of urban characteristic; the problem of reforming of old city; the problem of residential segregation. The above problems' formed reasons and countermeasures are put forward. Then, the example of Xi'an and its existing problems of urban space and several countermeasures are analyzed in the paper. The transformation of three sections realized in the planning thought of urban space is put forward: from "elitism" to "plebeianism"; from mega-urban project design to "daily living space" and from "technology first" to "human-oriented".

论文首先从中西方城市空间形态的演变历程入手，对比分析了国内外的空间形态现状，重点论述了当前我国存在的城市空间问题：城市建设"十大败笔"；中国"城市美化"运动；城市特色问题；旧城改造问题以及空间分异问题，分析了其形成原因并得出了解决途径，然后对西安进行了实例分析，总结出其城市空间存在问题并提出几点对策，接下来提出了城市空间规划理念应实现的三个方向的转变：从"精英主义"向"平民主义"理念转变、从大尺度城市设计向"日常生活空间"营造转变以及从"技术至上"向"以人为本"理念转变。

In the first part of this paper, we give some basic concepts of regular Sturm-Liouville problems and some Sturm-Liouville problems with eigenparameter in the boundary conditions and the definition and properties of the Krein space. Using the Krein space, we describe a class of Sturm-Liouville problems with eigenparameter in two boundary conditions and prove that it can generate a self-adjoint operator in Krein space with only point spectrum.

第一部分我们介绍了一些基本概念如正则Sturm-Liouville问题、边界条件含参数的问题、Krein空间等，并利用Krein空间的定义和性质描述了一类参数边界条件的Sturm-Liouville问题，证明它可构造一Krein空间上的自伴算子，并且谱全为点谱。

The statistical analysis of this large set of mutations has led us to propose a diagnostic strategy that should help with the molecular work-up of optic neuropathies.

这一大系列基因突变的统计学分析引导我们提出一个诊断策略，可以帮助我们对视神经病变进行分子学的诊断检查。

The results show that the pipe grouting changes the mechanical parameters of surrounding rocks to achieve the security of engineering objectives by reinforcing surrounding rocks and bolcking the water.

研究表明：小导管注浆一方面改变了围岩的力学参数，另一方面利用浆液的固结特性可以实现堵水和加固围岩的工程目标，使隧道在开挖过程中的安全得到保障。