分组

The problem of the error of calculation formula calculating the variance of grouping data within distances in statistics was put forward,and the concrete forms of correcting formula were given by the theorem of addition and the variance of even distribution.

提出统计学中的组距分组资料方差和标准差计算公式误差问题，由方差的加法定理和均匀分布方差给出分组资料方差计算和标准差计算的修正公式具体形式，并就均匀分布数列和正态分布数列组内方差平均数进行了讨论

Furthermore, we constructed group explicit method, alternating group explicit method and alternating section explicit-implicit method. The last two methods are unconditionally stable. The numerical results show that our methods have good accuracy.

分析表明，通过格式在不同时间层的交替，如分组显式方法、交替分组显式方法、交替分段显-隐方法，后两种方法是绝对稳定的，而且数值试验表明计算精度较好。

Preparation for drug serum: 20 Wistars mouses were at random divided intofour group that were fed with regular dosage baoganning (wascomposed of Milkvetch Root, Peach Seed, Baical Skullcap Root, WhitebackleafMallotus Root, Turtle Shell, Dan-Shen Root, RadixBupleuri, White Peony Root,Immature Bitter Orange,1.77g/ml),double dosage baoganning(3.54g/ml),Colchicine(0.05g/ml) and saline for seven days respectively. They were normalmouse serum,serum of baoganning regular dosage, serum of baoganning doubledosage and serum of Colchicine.

研究方法一、药物血清的制备：给正常20只Wistar大鼠随机分组，每组5只，采用血清药理学方法，分组给予保肝宁(由黄芪、桃仁、丹参、黄芩、鳖甲、柴胡、白芍、枳实等组成)等剂量煎剂(1.77g／ml)，保肝宁二倍剂量组煎剂(3.54g／ml)，秋水仙碱(0.05g／ml)灌胃7天，正常对照组大鼠给予生理盐水，常规方法制备含药血清及正常大鼠血清。

It must improve the commonly symmetrical key block cipher arithmetic for ensuring that the data length will not be increased after encryption: using forward shift bits mode in Triple DES with Two Keys; using cipher text stealing mode in RC5 with Cipher Block Chaining.

为保证加密后数据长度不变，应对常用的对称密钥分组密码算法以改进：双密钥三重DES加密采用向前挪位法，RC5密码分组链接加密采用密文窃取方式。

An important problem in the design of the block cipher is to improve the performance of the resisting differential cryptanalysis.

在分组密码的设计中，提高分组密码的抗差分攻击性能是一个重要的课题。

We introduce some keys techniques that have to be overcome in order to implement the OPS network,focusing on the techniques of optical packeting,packet synchronization and contention resolution.

详细阐述了实现光分组交换网络所必须依赖的关键技术，重点介绍了光分组技术、同步技术和光分组竞争解决技术。

The first idea to deal with the packet loss is the new proposal of multitask ATM cells and the required new ADPCM encoder. This scheme combines three tasks together, namely, reducing cell packeting delay, avoiding breakdown of speech decoders due to one lost cell, compensating or replacing the lost information segment, by dividing the cell payload field into two parts——main and additional information fields, the latter again consists of synchronization information and the coded speech information contained in the last cell.

首先以ATM网络为例，提出了新的信息分组多任务装配法，以及对应此方法的新型ADPCM语音编码系统，这种方法中，利用特殊设计的编码器，使ATM信元负载信息域，由主要和附加用户信息两部分组成，后者又由同步信息和前一个信元语音段信息组成，通过选择和调节信元中两部分信息域的比例，实现了小的分组装配时延、高的分组丢失补偿质量、强的阻断误差传递功能三者的结合。

This part Measures firms" size with market value of float shares, and divides each portfolio into quintiles and deciles to choose an appropriate grouping method. The second part divides the sample into two sub-samples to tests the different performance of "small firm effect" in two periods. The third part tests different performance of each month. The fourth part studies the "small firm effect" in five industries, the industry, the commerce, the public utilities, conglomerates and the properties, and uses Fame-Macbeth method to research "the small firm effect" in the different industries. The fifth part analyzes the reason why the "small firm effect" exists in China stock market referring to the western explanation about "the small firm effect and the character of China stock market. In the end, we provide some suggestion.

论文运用实证方法检验中国股市&小公司效应&的存在性，用流通股市值作为公司规模大小的度量，用五分组和十分组两种分组方法检验中国股市&小公司效应&的表现；把整个样本区间以2001年为界分为两个样本子区间，检验&小公司效应&在不同时间阶段的表现有何不同；分月检验&小公司效应&在不同月份的表现；把样本中所有上市公司按照行业分为五大类，工业类、商业类、公用事业类、房地产类和综合类，利用Fama-MacBeth法检验中国股市&小公司效应&在不同行业的表现；联系国外关于&小公司效应&存在原因的解释，结合中国股市的实际，分析中国股市&小公司效应&存在的原因，并提出了一些建议。

Enlightened by compensation model of wireless QoS scheduling algorithms and ideas that weights can be modified during scheduling, compensation model of CFQ can be implemented by deflating and magnifying wights with certain proportions.

与WFQ等不同的是，CFQ算法的的虚拟时间标签由于业务流的权值动态改变而将产生相应的缩放变化，当分组离开队列，需要立即更新业务流的HOL分组虚拟时间戳并重新排序以选择下一个调度的分组。

The physical layer contains n channels which transmit the packets and retransmits packets upon failure to receive a corresponding acknowledgment for a given packet.

此物理层包括n信道，其传输所述分组并于未接收一预定分组的相对应确认时，重新传输所述分组。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。