出发

In this paper,a systematic direct perturbation method of dark solitons is found.Having analyzed the mistakes in earlier works on perturbation method for dark solitonsand essence of the direct perturbation method for bright solitons,we notice that to in-troduce the adjoint solutions of the squared Jost solutions and to prove the completenessare crucial to the problem.Giving up the unnecessary scheme of introducing the adjointoperator in the bright soliton case,we directly find the adjoint solutions by meetingthe demand for the orthogonality that inner product of the squared Jost solutions andits adjoint should be proportional to a δ function in the case of continuous spectra.The corresponding adjoint operator is thus found.Taking into account the reductiontransformation,we find a correct description for the completeness of the squared Jostsolutions and directly verify its validity with explicit expressions of the squared Jostsolutions.

本论文建立了系统的暗孤子直接微扰方法，在对前人关于暗孤子微扰方法的错误以及亮孤子直接微扰方法的本质作了充分的分析后，认识到引入平方Jost解的伴随解和证明完备性是问题的关键，撇开过去亮孤子情况首先引入伴随算子的非必要作法，直接从平方Jost解与其伴随解的内积在连续谱时正比于δ函数这一正交性要求出发，找出了伴随解，同时得出了应有的伴随算子，在考虑到约化变换性后，得到了暗孤子情况的平方Jost解的完备性的正确表述，并在单个暗孤子的情况利用平方Jost解的显式直接验证了它的正确性。

Spectral methods and the classical Crank-Nicolson scheme are applied to deduce the full discrete system for the continuous model, then the variational adjoint assimilation approach is used to derive the gradient and the corresponding adjoint system.

从这个全离散问题出发，结合全局或局部已知的观测数据，分别构造梯度下降算法求解相应的最优化问题。我们分析了采用不同方法计算梯度所需的代价，另外，还给出一种选择最优迭代步长的算法。

This court goes along with the basic direction of "Governing the country according to law" and the requirement of building a suburban court goes well with international metropolis of Shanghai, place emphases on the design of legal culture of office and court adjudgment region, try to build this public place into an occasion that can represent the legal situation of Shanghai and the publicity of legal system.

该院从依法治国基本方略和建设与上海国际化大都市相匹配的城郊型法院要求出发，将办公和法庭审判区域的法律文化作重点设计，力求使这一公众开放区域建设成为体现上海法治环境、法制宣传的场所

The first chapter discusses the conception, the sort and the character of the system of admiralty possessory lien.

第1章从民法关于留置权的一般理论出发，概括论述了海事留置权制度的概念、种类、性质等一般理论。

The types of common concrete admixture s and their characteristics are briefly introduced.

简要介绍了常用外加剂的种类及其特性，从每种外加剂的特性出发分析了其在混凝土施工中的应用，以促进外加剂的广泛应用，大大改善混凝土的工作性能。

When the surface is considerably agitated there are no skaters nor water-bugs on it, but apparently, in calm days, they leave their havens and adventurously glide forth from the shore by short impulses till they completely cover it.

在湖水激荡的时候，便看不到掠水虫和水蝎了，显然只在风平浪静的时候，它们才从它们的港埠出发，探险似地从湖岸的一面，用短距离的滑行，滑上前去，滑上前去，直到它们滑过全湖。

A hypothesis is presented in the second chapter of this discourse based on the theory of F/M, to improve the unit's capability of phosphorus removed by advisably increase the value of F/M, and this hypothesis is proved to be practically feasible by a model experiment.

本文第二章从对F/M的理论分析出发，提出了在原有一体化氧化沟参数水平上适当地提高污泥负荷来实现提高除磷能力，使出水COD、TN、TP等指标全面达标的设想，通过模型试验证明这样的设想使切实可行的。

Hence, it is worthwhile to develop image understanding system aimed at specific task and problem, utilizing some knowledge reasonably and advisably to reduce present inefficient algorithm uncertainty, improve processing accuracy and reduce unnecessary computation.

在此情况下，从具体任务出发，针对某个具体任务和问题建立专用应用系统，同时合理和适当的引入一些知识，以减小问题求解的不确定性、提高理解结果的准确性、减少不必要的计算是有一定的现实意义的。

From the aeolotropy of hard rock of tunnel engineering region, the stress distribution of several kinds of fault to the water gushing of tunnel, the type of geology disaster involved in macrocharacter, main control factors, disaster mechanism and control strategy in tunnel excavating are studied systematically in this thesis. The purpose is to establish a theory and technology method for forecast and decrease disaster in tunnel excavating.

本文以硬岩隧道开挖工程区域岩体的各向异性研究为起点，从不同类型断层为主要构造形迹的应力分布特征出发，并结合隧道地下涌水灾害，系统研究隧道开挖的地质灾害类型，以宏观表象、主控因素、灾害机制及防治对策为主要研究内容，全面深入研究旨在为隧道开挖期间防灾、减灾提供理论基础与技术路线。

Proceed from the requirements of aerial remote sensing on photograph processing, the paper outlines the advantage of using automatic processor, describes principle and method for dynamic sensitometering and quality control, and states preliminary use of automatic processor in aerophotography and image reproduction.

本文从航测遥感发展对摄影处理提出的要求出发，阐述了使用自动冲洗机的优点、动态感光测定及质量控制原理和方法、自动冲洗机在航空摄影及图象复制中的初步运用。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。