查询词典 point of transition

Some metaphysicians contend that the relation between the lump and the statue, on the one hand, and the relation between Tib and Tibbles, on the other, cannot be fully understood in terms of the concepts of parthood and identity, but require a further concept, a non-mereological concept, the concept of "constitution": the pre-existent lump at a certain point in time comes to constitute the statue (or a certain quantity of gold or certain gold atoms that first constituted only the lump come to constitute them both); pre-existent Tib at a certain point in time comes to constitute Tibbles (or certain cat-flesh or certain molecules …).

一些形上学家承认在金块和雕像之间、Tib和Tibbles之间的关系，这些关系不能完全根据"parthood"和" identity"的概念进行理解，而必须要一个进一步的概念，一个non-mereological的概念，"构成"的概念：先在存在的金块在时间中的某个点构成了雕像（或，一定数量的金子或金粒子首先构成了金块，继而构成了这两个。）先在的Tib在某个时间点开始构成了Tibbles（或某些确定的猫肉、粒子等等）。

Depending on personal experience, personaltiy type and emotional concern, we find that some people hold the idea of A meanwhile other prefer to B, from my point of view, it is more advisable to chose A rather than B. My arguments for this point are listed as follows.

取决于个人经验， personaltiy 类型和感情关心，我们发现一些人举行一另一个的同时的想法喜欢B，依我看，更明智选择而不是我的对这个点的论点如下被列举的B。。

An instantaneous optimal semi-active control method is put forward. Combined sliding mode control with lyapunov's stability theory, the control weights matrix, which can minimize structural instantaneous energy, is designed. Simulation and shaking table test is conducted to validated the method's effectiveness. To solve combination explosion of controlled structural state encountered in high-rise building control, the semi-active control strategy, which can drive structural state point to reach the sliding mode switching band, is designed by using sliding mode control theory, and genetic algorithm is used to find the optimal semi-active switching to drive the structural state point to sliding mode switching band at prestissimo speed.

提出了一种瞬时最优半主动结构控制方法，利用滑模变结构控制理论和Lyapunov稳定性理论设计使结构瞬时能量最小的半主动控制权矩阵，仿真实例和振动台试验验证了本文所提方法的有效性和实用性；为解决在高层建筑半主动控制中半主动控制器状态组合爆炸的问题，利用滑模变结构控制理论设计在Lapunov稳定意义下使结构在运动状态空间中任一相点于以最快速率到达滑模切换带的半主动控制策略，并用遗传算法找出了最快到达滑模切换带的半主动控制切换组合。

This paper first analyses and summarizes the ststus quo and evolution trend of encryption, some common used cryptograph are introduced, including the algorithms used in symmetric cryptosystem and asymmetirc cryptosystem. We describe the theory of each algorithms and compare the elliptic curve cryptosystem with the other two asymmetric cryptosystems to show the advantages of this algorithm. Second, the principle of ECC is discussed, including the math foundation of ECC, basic conception of elliptic curves, constructiong idea of ECC, operation on the elliptic curve and so on. Third, the current attacks of ECC were analyzed deeply, and an algorithm based on limited prime number field was constructed. We analyzed its realizability in theory, and implement it by using certain function of MIRACL software package. Latter half in this paper, the implementation model of a simple elliptic curve encryption system which based on GF has been introduced. The paper also put a deep analysis on the algorithm of point addition and point multiplication.

本文首先对密码技术的发展现状及其发展趋势进行了分析和综述，详细的介绍了私钥密码系统和公钥密码系统的发展，说明各种算法的原理和优缺点，并给出了一些典型的密码体制的简要分析，重点将椭圆曲线算法与其它几种公钥密码算法比较，说明椭圆曲线算法的优势；其次，探讨了椭圆曲线密码体制的原理，包括椭圆曲线密码的数学基础、基本概念、椭圆曲线密码体制的构造思想等问题；第三作者对椭圆曲线的攻击现状作了详细的分析，针对所使用的大素数域F_p，设计了素数域上安全椭圆曲线产生的算法，从理论上做了可实施性分析，从软件上做了具体实现；在本文的后半部分，提出了一个简单的基于有限素数域上的椭圆曲线加密方按算实现模型，并对SECES中设计的点加和点乘运算进行了深入分析。

Point cloud models using discrete points as primitive element have many advantages such as data simple structure, compact space, and ability to express complicated surface in detail. However point cloud models usually can not be used directly.

点云模型以离散采样点为基元的几何模型，具有数据结构简单、存储空间紧凑，能够表达任意复杂表面细节，是造型所有表达方式中最自由的一种。

According to the obtained characteristics of focal points and principal planes, using the expressions of focal point, focal plane, focal length, principal point, and principal plane of geodesic lenses, the geometry graphic imaging formation principles of geodesic lenses are developed to get the object-image-relation of geodesic lenses .

利用短程透镜焦点、焦平面、焦距、主点、主平面等的表达式，根据短程透镜在大口径范围内理想聚焦，主平面为以焦点为圆心、以焦距为半径、在原点相切的两个圆弧等性质，推导出了短程透镜物像关系的作图法求取原则。

The principal point of this research is to understand the managerial items of ecological engineering of the river ecological engineering through the proprietor's a point of view.

本研究主要针对河川水域生态工程，以管者角探究河川水域生态工程生命周期由规划、设计、施工至维护等阶段之管项目。

The principle of the main circuit, choice of the control parameters, choice of the control algorithm and the principle of point-by-point integration method are first introduced in this paper.

论文首先介绍了逆变主电路的原理、控制参量的选择、控制算法的选择，以及焊接电流、电压的逐点积分检测原理。

China deliciosus deliciosus Museum for display of Chinese history and the development of the industry, promote Chinese culture has a long deliciosus of great practical significance 1, deliciosus ----- deliciosus Science Museum Science Museum is a museum Core deliciosus, where the soul from the scientific point of view, to the universal audience deliciosus knowledge, deliciosus is rich in value, is a gift of nature The treasure of humanity, from a scientific point of view, the adoption of specimens, models, three-dimensional landscape, pictures, videos, interactive multi-media technology to display the way to create a lively, and the pro-intellectual context, so that viewers feel lovely natural life, Alas .

中国菇菌博物馆对于展示中国菇菌行业的发展历史、弘扬中国悠久的菇菌文化具有重要的现实意义 1、菇菌科学馆-----菇菌科学馆是整个菇菌博物馆的核心、灵魂所在，从科普的角度，向观众普及菇菌的知识，菇菌有着丰富的利用价值，是大自然赐予人类的瑰宝，从科学的角度出发，通过标本、模型、立体造景、图片、影片、多媒体技术等互动展示手法，营造了一个生动、亲和的知性情境，让观众感受自然生命可爱、可叹之处。

Genetic algorithm optimization process can be seen as algorithms in the process of constant cycle of viable domain random, using the results of previous sampling probability distribution on the target point estimates, and then based on an estimate of the projected distribution of a sample point.

遗传算法优化的过程，可以看作算法在循环过程中不断对可行域进行随机抽样，利用前面抽样的结果对目标点的概率分布进行估计，然后根据估计出的分布推算下一次的抽样点。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。