查询词典 efficient point

At present, more and more serious energy crisis and environmental protection problem force dust separator to develop toward low-resistance and high-efficient, but performance index which runing actually of different forms cyclone dust separator which used extensively can't meet the demands far, so to develop a low-resistance and high-efficient cyclone dust separator which suitable for our national conditions is an important subject of scientific researches of present environmental science.

目前，日益严重的能源危机和环保问题迫使除尘器向低阻高效方向发展，而广泛应用的各种形式的旋风除尘器实际运行的性能指标还远不能满足要求，因此研制一种适合我国国情的低阻高效的旋风除尘器是当前的环境科学研究的一项重要课题。

At present, more and more serious energy crisis and environmental protection problem force dust separator to develop toward low-resistance and high-efficient, but performance index which runing actually of different forms cyclone dust separator which used extensively cant meet the demands far, so to develop a low-resistance and high-efficient cyclone dust separator which suitable for our national conditions is an important subject of scientific researches of present environmental science.

目前，日益严重的能源危机和环保问题迫使除尘器向低阻高效方向发展，而广泛应用的各种形式的旋风除尘器实际运行的性能指标还远不能满足要求，因此研制一种适合我国国情的低阻高效的旋风除尘器是当前的环境科学研究的一项重要课题。

Efficient imple- mentation, must be a professional operations team, and scientific and efficient implementation of the model anchored.

高效执行，必须以专业运作团队与科学高效的执行模式为基点。

The security of PKI system itself is especially emphasized during the system design and implementation process, which is in accordance with the pervasive characteristic of PKI. Second, the concept of a Trusted Key Management Center is introduced for the first time. This technology greatly strengthens key management practices and allows for smooth transition from PKI to Key Management Infrastructure. Third, certificate status mechanisms are investigated in depth, and a certificate revocation performance simulation system is devised. All these work will provide guides to practice and employment of PKI applications. Based on time constraints, a new taxonomy for authenticated dictionaries is proposed. Fourth, formal analysis ofOCSP protocol is carried out; then an efficient and scalable OCSP system is developed. Fifth, the special requirements caused by the working environments of Wireless PKI are analyzed. Based on communicative hashing and dynamic Merkle hash tree, an efficient certificate status validation method suitable for WPKI is presented. Sixth, one important kind of fair exchange protocols is studied, and a new CEMBS based on RSA cryptosystem is proposed. Afterwards, a novel fair exchange protocol totally based on RSA signature scheme is devised.

在系统设计和实现的过程中，考虑到PKI作为普适性安全基础平台的特点，特别强调PKI系统自身的安全性；第二，首次在PKI系统的设计中提出了"可信密钥管理中心"的概念，这一独特设计大大地强化了密钥管理功能的实施，为PKI向密钥管理基础设施的平滑过渡提供了良好的技术准备；第三，对证书状态验证机制进行了深入研究，设计了证书状态模拟系统，以指导PKI系统和应用的部署和实施；在此基础上，基于时间约束首次给出了认证字典的一种新的分类方法；第四，对OCSP协议进行了形式化分析，设计和实现了一种高效、可扩展的OCSP系统；第五，分析了WPKI工作环境对设计安全基础平台提出的特殊要求，结合无线移动设备的具体特点，基于可交换杂凑函数和动态Merkle杂凑树设计出了一种适用于WPKI环境的高效证书状态查询机制；第六，对一类公平交换协议进行了深入的研究，从设计公平交换协议的密码基础结构出发，提出了一种新型的基于RSA密码体制的高效CEMBS；在此工作的基础上，设计了一种基于RSA密码体制的最优化公平交换协议。

The security of PKI system itself is especially emphasized during the system design and implementation process, which is in accordance with the pervasive characteristic of PKI. Second, the concept of a Trusted Key Management Center is introduced for the first time. This technology greatly strengthens key management practices and allows for smooth transition from PKI to Key Management Infrastructure . Third, certificate status mechanisms are investigated in depth, and a certificate revocation performance simulation system is devised. All these work will provide guides to practice and employment of PKI applications. Based on time constraints, a new taxonomy for authenticated dictionaries is proposed. Fourth, formal analysis of OCSP protocol is carried out; then an efficient and scalable OCSP system is developed. Fifth, the special requirements caused by the working environments of Wireless PKI are analyzed. Based on communicative hashing and dynamic Merkle hash tree, an efficient certificate status validation method suitable for WPKI is presented. Sixth, one important kind of fair exchange protocols is studied, and a new CEMBS based on RSA cryptosystem is proposed. Afterwards, a novel fair exchange protocol totally based on RSA signature scheme is devised.

在系统设计和实现的过程中，考虑到PKI作为普适性安全基础平台的特点，特别强调PKI系统自身的安全性；第二，首次在PKI系统的设计中提出了"可信密钥管理中心"的概念，这一独特设计大大地强化了密钥管理功能的实施，为PKI向密钥管理基础设施的平滑过渡提供了良好的技术准备；第三，对证书状态验证机制进行了深入研究，设计了证书状态模拟系统，以指导PKI系统和应用的部署和实施；在此基础上，基于时间约束首次给出了认证字典的一种新的分类方法；第四，对OCSP协议进行了形式化分析，设计和实现了一种高效、可扩展的OCSP系统；第五，分析了WPKI工作环境对设计安全基础平台提出的特殊要求，结合无线移动设备的具体特点，基于可交换杂凑函数和动态Merkle杂凑树设计出了一种适用于WPKI环境的高效证书状态查询机制；第六，对一类公平交换协议进行了深入的研究，从设计公平交换协议的密码基础结构出发，提出了一种新型的基于RSA密码体制的高效CEMBS；在此工作的基础上，设计了一种基于RSA密码体制的最优化公平交换协议。

In chapter 4, the case of risk asset allocation with allowed sell and restricted short sell is discussed, especially in case of restricted short sell, the efficient frontier piecewise partition is determined by using duality theory in parametric quadratic programming. And the concept of tripartition is introduced, economic meaning stated and algorithm to determine efficient frontier proposed.

特别对限制卖空的证券组合，应用参数二次规划对偶性理论解决了有效边缘曲线分片划分的问题，并引入了三元分割的概念，解释其经济意义，同时给出确定有效边缘的算法；对于协方差矩阵是奇异的情况，利用矩阵分块技术，得到不同情形下有效边缘的解析表达式，并用直观的几何图形描述，克服了M-V模型在实证分析中遇到的困难。

A series of convenient and efficient reactions have been developed. Especially, instead of using toxic phosgene, the triphosgene was employed in the synthetic process of some receptors, which provides a convenient. safe and efficient method for the preparation of chiral unsymmetrical urea.

深入研究了它们的合成方法，实现了多种简便有效的选择性合成，特别是以三光气代替剧毒的光气，实现了一条简便、安全、有效的制备手性不对称脲的方法。

In the sense of a row metrics,these conditions are very simpleand efficient,which supply some basic guarantees for obtaining an efficient pre-conditioning matrix.

在一种行尺度意义下，这些条件显得简单有效，为得到一个有效的预条件矩阵提供了某种基本保证。

Without utility function, group preference relation on alternative set was constructed in this paper by means of efficient numbers of alternatives, which are described by Pareto efficient solutions of a group of multiobjective decision making problems respectively considered by decision makers.

本文撇开效用函数的介入，直接依据由各多目标决策问题的Pareto有效解表示的供选方案的有效数，引进了决策群体在供选方案集上的偏爱关系。

Without utility function, group preference relation on alternative set was constructed in this paper by means of efficient numbers of a lternatives, which are described by Pareto efficient solutions of a group of mul tiobjective decision making problems respectively considered by decision makers.

一些学 者曾借助群体效用函数引进群体多目标决策问题有关效用解的概念，并且给出若干求解的方法。本文撇开效用函数的介入，直接依据由各多目标决策问题的Pareto有效解表示的供选方案的有效数，引进了决策群体在供选方案集上的偏爱关系。

Apllied the data of QuickBird-2——the highest resolution remote sensing,and based on the theory and methodology of fractal geometry,we have quantitatively studied remote sensing lineations in Gaolong gold deposit of Guangxi.

采用Quick Brid-2高分辨率卫星遥感数据，通过分形几何学的盒计维数法，定量研究广西高龙金矿区遥感线性构造。

So, sometimes, to change the color can not be your food (referring to the above-mentioned crustacean) has been a sign of boiling over.

所以，有时，来改变颜色，不能你的食物一直是沸腾了的迹象。