随机

Methods: During the April 2003 to December 2004, from the patients with different position colorectal cancer beyond Dukes C stage who were performed laparoscopic radical operation random draw 20 patients as experiment group, and from patients with different position colorectal cancer beyond Dukes C patients who were performed open radical operation 20 patients took randomly as contrast group. We draw thepatients blood about 5 ml from antecubital vein at the time before and after the operation about 30 minutes respectively, preserved the blood in deep hypothermia circumstance,cytrokeratin-20(CK-20) as the micrometastasis maker, using the RT-PCR technique,G3PDH as the intra-contrast gene, quantitatively detect the amounts of CK-20 in the blood with the gelatum imagery system and the computer analyzing software on the gelatum imagery system ,in order to compare the influence of the laparoscopic and the open operation on the micrometastasis.

在我院2003年4月—2004年12月间不同部位的临床分期在Dukes C期之内的接受了腹腔镜结直肠癌根治术结直肠癌患者中随机抽取20例作为试验组，另外在同期的接受开腹手术患者中随机抽取20例作为对照组，分别抽取术前30min和术后30min的肘前静脉血5ml，集中低温保存，以细胞角蛋白(cytekeratin-20)CK-20为微转移的标志物，应用RT-PCR技术，以G3PDH为内对照基因，应用凝胶成像系统及其计算机凝胶成像系统分析软件来定量检测手术前、后患者外周静脉血中CK-20含量，比较腹腔镜和开腹的手术方式对肿瘤微转移的影响。

In order to screen a therapy treating both principal and secondary aspect of disease for neuroleptic-induced astriction, 174 inpatients given neuroleptics were randomly selected and divided into 4 groups. Groups A, B, and C orally given Vit B1, warm salt water, and sennamixture respectively were compared with control group one by one using χ2 test.

为了筛选出一种对抗精神病药所引起的药源性便秘进行标本兼治的方法，作者通过随机抽样，对住院的174例服用抗精神病药的病人随机分为A、B、C、D组(前3组为用药组，第4组为对照组)，分别口服Vit B1、温盐水、蕃泻叶合剂与对照组逐个进行对比观察，进行χ2检验。

The paper is organized as follows. In chapter 2, we introduce some concepts about SEA, the abstract SEA model and the convergence definition of algorithm. In chapter 3, we describe firstly the evolution of PMA as an abstract stochastic process, and by characterizing axiomatically the properties of the fundamental selection and evolution operators, we conclude that PMA is essentially a kind of SEA.

本文结构安排如下：第二章介绍了模拟进化算法的一些基本概念、形式化随机过程描述以及收敛性定义；第三章对改进后的 PMA 各操作作了抽象定义，得到了 PMA 的形式化随机过程描述，并公理化地证明了各操作算子为选择或繁殖算子，从而得出 PMA本质上也是一种模拟进化算法；第四章先对选择算子特征数定义作了适当改进，并通过各进化算子的具体特征数指出，如果 PMA 不采取任何执行策略时，算法本身并不收敛。

Port vessel berthing system is a stochastic multi-level queuing system which is very complex and dynamic.

港口船舶航行作业系统是一个随机因素多、动态联系复杂多级排队的随机服务系统。

METHODS: Medline (1966 to August 2005), MD Consult (1966 toAugust 2005), BIOSIS (1969 to August 2005), and EMBASE (1969to August 2005) databases were searched. Randomized and quasirandomizedstudies comparing GA and neuraxial blockfor elective THR were included in this analysis.

搜索 Medline （1996年－2005年8月）、 MD Consult （1966年－2005年9月）、 BIOSIS （1969年－2005年9月）和 EMBASE （1969年－2005年9月）的资料，分析其中包括随机或几乎随机的神经轴阻滞和全麻下行选择性全髋置换比较的数据。

In March to middle of June of 2004,fifty random selected nests of Phalacrocorax carbo in Majuan Island of Sanjiang National Nature Reserve of Haiqing town of Fuyuan county of Heilongjiang province were numbered and measured one by one to study the materials,location and direction,and size of the nests.

2004年3~6月，在黑龙江省三江国家级自然保护区海青保护站马圈岛，采用随机抽样法，对随机选取的50个普通鸬鹚巢逐一进行编号和测量，进行巢材、巢位和巢大小等的研究；采用总面积调查法(样方大小为30m×30m)，对普通鸬鹚巢的分布格局、分布特点进行了研究。

Random amplified polymorphic DNA markers were used to measure genetic diversity and genetic structure of 150 individuals from 5 natural populations of Carya cathayensis. 252 loci were identified from 20 RAPD primers, out of which 168 loci were polymorphic and accounted for 66.7% of the total genetic diversity at species level.

利用随机扩增多态性DNA分子标记技术，分析了山核桃5个天然居群150个个体的遗传多样性和遗传结构，20条10bp的随机引物共扩增出252个位点，其中，多态性位点168个，多态位点百分率为66.7%。

The concept of comparison with probability was also introduced based on NDPSO, and then the stochastic repairing operator was constructed for heuristic search to solve the Winner Determination Problem in combinatory auction.

在NDPSO算法的基础上引入依概率随机比较的概念，并构造了进行启发式搜索的随机修补算子，实现对组合拍卖中的竞胜标确定问题的求解。

Five rats were randomly selected for the check of histopathology before the end of model confirmedly making, and then the model rats were randomly divided into model group and infrared group with 11 in each group.

随机取5只进行胃黏膜病理组织学检查，确认模型成功后，将造模动物随机分成非治疗组及红外线治疗组，每组11只。

AIM: To generate random sequences that can fit the anticipated probability distribution based on the thinking of MC, METHODS: We establish a method in the IDE of visual studio by the way of Linear Congruential Method to generate random sequences.

目的：基于MC法生成符合预期概率分布的随机序列，以便应用在以后的仿真系统中目的：基于MC法生成符合预期概率分布的随机序列，以便应用在以后的仿真系统中。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。