组合

Secondly, the properties of output sequences of stop-and-go clocked combiners are discussed. It is proved that the output sequences are stationary and obey strong law of large numbers and central limit theorem. Using the probabilistic model properly built, we analyze the rate of coincidence between the output sequences of two kinds of generators with basic operations and corresponding LFSRs sequences. All the computational formulae are derived. A recursive algorithm for efficiently computing the poster probability of partial input strings and corresponding joint probability is introduced. Moreover, divide-and-conquer attacks on this kind of generators which reconstruct the initial states of the input stop-and-go generators individually are proposed.

其次，分析了一般钟控停走组合生成器输出序列的概率分布性质，证明了生成器的输出序列是严平稳的，且服从强大数定律和中心极限定理；考察了钟控加法型组合生成器和钟控乘法型组合生成器的输出序列和相应的常规钟控下线性移位寄存器序列之间的符合率，给出了符合率的具体计算公式；给出了组合器输出序列段和输入序列段之间的联合分布以及部分输入序列段的后验概率的有效递归算法，进一步提出了利用后验概率对钟控组合生成器进行分别征服相关攻击的方法。

Crossing combinations of Soybean heterosis were stadied i n 1996～2000. The first yield test indicated that the soybean had clea r heterosis . At the same time, 161 comparative high-superiority combinatio ns selected by the test amounted to 80.9%in total. And 69 combinations are amang the high-superiority crosses in total with 34%.

经过1996～2000年5年的研究，共配制杂种优势测定组合199个，通过第一次产量鉴定表明，大豆具有明显的杂种优势，并筛选出F1超高亲、超对照优势率均为正值，且二者平均值大于10％的较强优势组合161个，占全部组合的80.9％。F1 超高亲、超对照优势率均大于20 ％的高优势组合69个占全部组合的34％。

At the short-term level (from 4 to 6 months), there is a momentum profit for both win portfolio and loss portfolio, while at the long-term level (from 12 to 24 months), overreaction is obvious for both, and contrariant strategies will get 14.36% abnormal return.

研究结果发现，在短期水平上，形成期和持有期均为 4～ 6个月的投资组合，无论赢家组合还是输家组合都存在一定程度的动量利润，赢家组合的动量利润大约为输家组合的 2倍。

A composition that can be used as catalyst is disclosed, which comprises or is produced by combining, a titanium compound; either a complexing agent, a combination of a complexing agent, hypophosphorous acid or a salt thereof, and optionally a solvent, a zirconium compound, or both, combinations thereof; a phosphorus compound; and, optionally, a solvent.

公开了一种可用作催化剂的组合物，该组合物包括钛化合物；络合剂，或络合剂、次磷酸或其盐和选择性使用的溶剂、锆化合物或二者的组合，或它们的组合；磷化合物和选择性使用的一种溶剂；或是用它们的组合制成的催化剂。

The conclusions are as follows: Various depositional environment is of its particular indicator element association. F-Cl-Br-I-Ca-Mg association reflects the relative age and proportion of marine sediments, N-S-OrgC, I-Hg and Y-Ce-La association indicates respectively the lake facies, lagoonal facies and terrestrial facies depositional environment.

结果表明：各沉积环境有其特征的指示元素或组合，F、Cl、Br、I、Ca和Mg元素组合可反映海相沉积物的新老和比例；N、S、OrgC组合，I、Hg组合和Y、Ce、La等稀土和稀有元素组合分别指示湖相、泻湖相和陆相沉积环境。

Crassipes and other aquatic plants pulssingall combination in series showed efficiant removing ability for nitrogen and phosphorus,and the inlay combination of E. crassipes, Trapa manshurica and Nymphaea tetragonashowed better removal efficiency for redox organic pollutants than the inlay combinationadding other combination in series.

人工复合生态系统试验表明，凤眼莲与水生植物的镶嵌组合加各级串联组合能有效去除氮磷，而对于还原性有机污染物，凤菱睡镶嵌组合的去除效果相对要好于镶嵌组合加各级串联组合。

To avoid the permutable model of protein, the 43 Table of Triplet Codes Given by F.H.C.Crick in 1969 is in fact that one group of permutations versus the permutation elements in another group of permutations , which is a typical wrong application and a wrong calculation.

Crick 43 遗传密码表回避蛋白质分子的排列组合模型问题，根据氨基酸种类数20 和 DNA 上碱基种类数 4进行对四元素选三元素的排列组合计算建立& DNA ～蛋白质&间的一一对应，本质上是排列组合应用中一组排列组合对应另一组排列组合的具体元素。

With regard to the character sties of shipping service , the mechanism and operation procedure of combinatorial auction has been designed in order to balance the maximization of seller ' s utility and bidder ' s total estimated value . For the winner determination problem in combinatorial auction of container shipping service , a general optimization model is set up and modified by introducing quality attribute parameters of container shipping service and constraints of shipping volume etc .

根据运输的&范围经济性&原理，阐述了集装箱航运服务组合拍卖的适用性，围绕价值因素和价值评价因素，分析了集装箱航运服务组合拍卖的比较优势，结合集装箱航运服务的特点，以拍卖者效用最大化和投标者总估值最大化平衡为目标，设计出了组合拍卖的机制和运作程序；针对组合拍卖中的竟胜标问题，建立了集装箱航运服务组合拍卖的一般优化模型，并通过引入集装箱航运服务质量属性参数和运量限制等约束条件，对其进行了改进。

With regard to the character sties of shipping service , the mechanism and operation procedure of combinatorial auction has been designed in order to balance the maximization of seller ' utility and bidder ' total estimated value . For the winner determination problem in combinatorial auction of container shipping service , a general optimization model is set up and modified by introducing quality attribute parameters of container shipping service and constraints of shipping volume etc .

根据运输的&范围经济性&原理，阐述了集装箱航运服务组合拍卖的适用性，围绕价值因素和价值评价因素，分析了集装箱航运服务组合拍卖的比较优势，结合集装箱航运服务的特点，以拍卖者效用最大化和投标者总估值最大化平衡为目标，设计出了组合拍卖的机制和运作程序；针对组合拍卖中的竟胜标问题，建立了集装箱航运服务组合拍卖的一般优化模型，并通过引入集装箱航运服务质量属性参数和运量限制等约束条件，对其进行了改进。

Firstly,a state-of-the-art survey of hybrid FRP-concrete beam/deck systems is reviewed from the aspects of the main composite forms and their studies.Secondly,three typically analytical methods and three types of optimized failure modes and their corresponding ductility for hybrid FRP-concrete be...

文中首先从主要组合形式及其相关研究等方面回顾了FRP-混凝土组合梁/板系统的国内外研究现状，其次介绍了FRP-混凝土组合梁/板系统的3种常用分析方法和3种优化失效模式及相应的延性特征，接着列出了FRP-混凝土组合梁/板系统在国内外桥梁工程中的具体应用，最后探讨了该组合系统在今后研究中需要解决的一些问题。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。