分组

When outcome variable is measured in the dichotomous form, the descriptive indices are often indicated for frequencies, percentages or proportions, correspondingly, the statistical inference methods are mainly χ2 test or the two-variable relationship analysis.

分组变量和结局变量均为二分类变量的研究在医学研究中是比较常见的，结局变量表示为二分类的形式，研究者通常采用频数、百分比或比例等统计指标描述，相应的统计推断方法主要为χ2检验或两变量之间的关联性分析。

Methods The rats were randomly divided into 2 groups after Diethylstilbestrol Administration.

取雌性大鼠随机分组，皮下注射己烯雌酚以提高子宫敏感性。

Based on the embedded system and cipher technology, a digital speech scrambler is designed and realized in this thesis which can security transmit speech, video, fax and data.

本文利用嵌入式系统技术和密码学技术，利用现有的PSTN或ISDN，采用先进的分组加密算法，设计实现了基于EPSON 33209 体系的数字语音保密电话，实现语音、视频、传真及数据的安全传输。

Thirdly, we divide the right offerings' companies into two groups according to whether the policies of right offering are strict; we find that the stock return performances are more digressive than the market return performances markedly in the period of rigorous policies.

第二，把配股公司按照资产规模大小进行分组，发现规模较大的公司在配股后长期回报率比市场回报率出现了明显的下滑趋势，而规模较小的公司，配股后业绩下滑统计上并不显著。

Comparative anatomy of Chinese Dioscorea and its meaning in sectional divisions.

薯蓣属茎的比较解剖及其在分组上的意义。

Jason communicated with the students well, played games and directed the students in every group to make sure every student had a change to practice. At last, this activity ended with a speech which was given by Jason.

外教Jason与参加次此活动的学员进行了良好的互动交流，与学生做游戏、采取分组讨论的形式并指导学生，使每个同学都获得了与外教交流的机会、最后此次活动在外教Jason老师的一段精彩的主题演讲中结束。

RESULTSdiabetic rats showed typical symptoms involving elevated serum glucose and weight loss (2)The rats in DM+VaD group reacted slower and made more error numbers in Y-maze than the rats in VaD group did, with a prolonged total reacting time in a whole day.(3)More neurons with serious damages, such as edema, ischemia or pyknosis could be found in DM+VaD group than in VaD group. More disarrangement of cone neurons, obvious glia proliferation, and more neuron apoptosis were found in CA area of hippocampus. CONCLUSIONS (1)2-VO in STZ-induced diabetic rats succeeded in establishing VaD animal models.(2) The cognitive dysfunction induced by VaD rats had been deteriorated by diabetes mellitus.(3)Morphology evidences proved that diabetes mellitus aggravated brain damages induced by VaD.PART II Effect of diabetes mellitus on the cholinergic nervous systemin CA1 area of hippocampus of VaDOBJECTIVE To estimate the role of cholinergic nervous system in hippocampus during the process of cognitive dysfunction aggravated by diabetes mellitus in DM+VaD group. METHODS Observe the changes of ChAT protein by immunohistochemistry stain. Chose three rats randomly from each group at each pointat two week, four week, and eight week, then sepa

经腹腔注射链脲佐菌素诱导慢性实验性糖尿病，1周后永久性结扎双侧颈总动脉(2-VO)制作VaD模型记录术后2周、4周和8周各组大鼠的体重及血糖；应用Y-迷宫检测空间定向学第二军医大学博士论文中…丈摘…要1ia；一色恤~﹁染澎糕行HE染色观察组织病理学孪叱；胶质细胞原纤维酸性蛋白protellZ，Cf冰尸标记观察星形胶质细舱的激活情况、橄声软公点娜育票票众糯黑橄居端粗默孺篇筑价井袱第二部分糖尿病对血管性痴呆大鼠海马c心区胆碱能神经系统的影响探讨海马CAI区胆碱能神经系统在糖尿病加重确D一大鼠认知障碍中所实验动物及分组同第一部分，应用免疫组织化学染色方法现察海马CAI{介狱牛第晕军l袭拔常博粗{论义

Due to the discreteness of transformer taps and the switching of shunt capacitance/reactance banks, the rigorous reactive power optimization is the problem of Mixed-Integer Nonlinear Programming involving both discrete and continuous variables.

在电力系统无功优化过程中，由于有载调压变压器分接头的存在和补偿电容／电抗器分组投切的离散特性，使得严格意义上的无功优化问题成为一个离散变量和连续变量共存的混合整数非线性规划(Mixed-Integer Nonlinear Programming，MINLP)问题。

This paper is mainly about discretization for inductive learning from continuous sample data.

摘 要：主要研究的是归纳式学习中连续型样本数据的分组问题。

But the problem of discretization of continuous data hasn't been well solved.

特别是对样本数据为连续型的数据的分组问题，目前尚未得到很好的解决。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。