查询词典 statistical decision problem

There are totally five chapters in the paper. Chapter 1 is the introduc-tion,and extreme value theory and methods and modelling for returns fat tails are introduced systematically in Chapter 2.This chapter also presents mean excess function and de Haan's moment estimate to decide on the reasonable exceedance threshold. Chapter 3 describes in detail non-linear time series mod-els such as GARCH models and the corresponding statistical inferences,and it also gives modelling and statistical analysis methods for returns series. Chap-ter 4 uses the models in Chapter 2 to analyzes the daily returns for Shanghai complex index and Shenzhen complex index in the Shanghai and Shenzhen stock markets. Chapter 5 applies the models in Chapter 3 to the volatility analysis of the two stock indices returns.

论文总共五章：第一章是引言部分；第二章系统介绍了极值理论方法和收益率厚尾的建模方法，给出了平均剩余函数法和de Haan矩估计相结合的方法确定合理的超越门限；第三章详细论述了非线性时间序列模型GARCH类模型及其统计推断，并且给出了收益率时间序列波动的建模和统计分析方法；第四章利用第二章的模型对国内沪深两市大盘指数上证综指和深证综指日收益率数据分布的厚尾进行了实证分析；第五章将第三章的模型应用到两个股指日收益率时间序列的波动分析。

At last, the generated numbers was tested according to the standard of FIPS 140-2 statistical tests for randomness. And the results indicated that the generator can generate the high-quality pseudo-random numbers, which have good statistical properties and can be applied in cryptography.

计算机模拟表明，提出的二维梯形伪随机序列发生器产生的伪随机序列完全可以通过FIPS 140-2测试标准，证明该发生器具有良好的统计特性，完全可以应用于密码学领域。

This article is composed of two parts: the statistical analysis for geometric distribution and the statistical analysis for Weibul...

本文由几何分布产品的统计分析和Weibull分布产品的统计分析两篇组成。

This article is composed of two parts: the statistical analysis for geometric distribution and the statistical analysis for Weibull distribution as well.

本文由几何分布产品的统计分析和Weibull分布产品的统计分析两篇组成。

With the rapid development of China's socio-economic, economic statistical data and statistical information grow by geometric progression.

随着我国社会经济的快速发展，经济统计数据和统计信息量以几何级数迅猛增长。

objective to compare four postoperative nasal packing materials.methods total 136 patients,80 cases with chronic sinus it is and under went endoscopic sinussurgery,were randomly packed using four different hae mostasis materials.in which,paraffin gauze group was 40 cases,rapid sorbalgon group 27 cases,merocel group 36 cases and gel knit group 31 cases.the packing materials wereemoved after left for 24 hours to 48 hours.the efficacy of nasal packing materials was asassessed interm of the levels of nasal pain or headache in the leaving period and nasal bleeding after removal of nasal packing.results the in cidence rate of nasal pain or headache respectively was 82.5% in paraffin gauze group,44.4% in merocel,11.1% in sorbalgon and 3.2% in gel knit.the significant statistical difference was observedbetween the four groups (χ2=70.21,p.01).the incidence rate of nasal bleeding after removed was 85%,11.1%,41.7% and 9.7% respectively.the statistical difference was also significant (χ2=54.28,p.01).conclusions the choosing of postoperative na sal packing after functional endoscopic sinus sur gey depends on various factors,gel knit has much advantages and can be used as routine packs after fess.

摘 要］目的：比较四种鼻腔填塞材料的疗效，指导临床选择合适的术后鼻内填塞物。方法：对134例慢性鼻窦炎分别采用凡士林纱条(40例)、藻酸钙纤维(sorbalgon，27例)、膨胀海绵(merocel，36例)和瑞纳凝胶快速止血材料(gel knit，31例)四种材料填塞鼻腔，24 h～48 h取出填塞物，根据填塞后鼻腔胀痛、头痛程度，取出填塞物后鼻腔出血程度等评价疗效。结果：凡士林纱条填塞组，82.5%有鼻腔胀痛或头痛；sorbalgon藻酸钙纤维组11.1%；merocel组44.4%；gel knit组3.2%，四组比较差异非常显著(χ2=70.21，p.01)。取出填塞物后鼻腔再出血分别为85%，11.1%，41.7%和9.7%，四组比较差异非常显著(χ2=54.28，p.01)。结论：鼻内镜手术时，应综合考虑诸方面因素合理选用术后填塞物。瑞纳优势较为全面，可作为鼻内镜手术的常规填塞材料。

Statistical methods were chi-square analysis and t-test.resultsstatistical significance existed in: mental and physical misery dimension between male and female students; perspective-taking dimension between students of arts and of science; imaginativeness and sympathy dimensions between class-leader and non-class-leader; sympathy dimension between only-child and non-only-child. no statistical significance was found among the students in city and village.

结果 男女大学生在身心忧急维度上差异存在统计学意义；文理科学生在观点取替维度上差异存在统计学意义；学生干部与非学生干部在幻想力、同情关怀2个维度上差异存在统计学意义；独生子女与非独生子女大学生在同情关怀维度上差异存在统计学意义；家住城镇与家在乡村的大学生各维度差异均无统计学意义。

As to statistical analysis, Chinese version of statistical packaged software SPSS 12.0 was used to conduct descriptive statistics and inferential statistics.

统计分析的方法是运用统计套装软体SPSS 12.0中文版来进行描述性统计及推论性统计。

Due to the inveracity of statistical probability with little sample of disasters, the mutation progression was used to calculate the probability instead of the statistical probability and fuzzy degree instead of brittle events' value.

鉴于小样本灾害事件统计概率的不准确性，用突变级数法计算的脆性因子突变概率代替脆性风险熵计算中的统计概率，模糊数代替脆性事件结果价值。

Statistical inference under order restrictions is an important area of statistical analysis and isotonic regression theory plays a key role in this field.

约束条件下的统计推断巳成为统计分析中一个重要的研究领域，而保序回归的研究又是其中之关键。

The French are not suggesting a new EU treaty, but they have plenty of other wheezes.

法国人并不是在建议签署一个新的欧盟条约，但他们有许多其他的阴谋。

This letter was written by my brother.

这封信是我弟弟写的。