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统计数据分析

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Quantile regression models are important statistical models, which are more powerful than least square regression and least absolute deviation regression in statistical analysis, and can supply much more attractive inference results for the datasets.

分位点回归模型是一种重要的统计模型,它比最小二乘回归和LAD回归具有更强的统计分析能力,能给数据集提供更加丰富的统计推断结果。

The aim of the paper is to improve the reliability of HF generator, which is the key to decide the life of HF electrodeless light. At first, I collect and analyze the relative dates, and statistics fault models.

首先进行了与可靠性相关的数据收集与分析,对故障模式进行统计;然后从电路结构、环境应力及容差三个方面进行可靠性分析,从而为关键的可靠性设计提供了依据;接下来的可靠性设计,从电路设计、热设计、降额使用、筛选四个方面逐一解决了可靠性分析阶段发现的问题;最后,我将改良的发生器批量生产,并从中重新收集了可靠性数据进行计算,事实证明改良后高频无极灯的平均寿命已达到6万小时。

According to the regulation of period time of average statistical climate by the World Meteorological Organization, and taking into account of our country's climate characteristics, statistically analyzes the basic weather data for 18 cities in China from 1970 to 2000. Weather data include maximum temperature and correspono, minimum relative humidity , minimum temperature and corresponding maximum relative humidity. This would be a preliminary database for responsive climate building design.

依据世界气象组织关于气象参数统计时段的规定,考虑到我国不同城市区域气候的特点,在建立室外气象参数分析模型的基础上,本文首次统计分析了我国18个城市最近30年(1970-2000)的主要气象参数,包括月平均温度、月最高温度、最低温度、以及对应的最小相对湿度和最大相对湿度,为建筑气候设计奠定了数据基础。

With a practical example,the accuracy inspection and statistical analysis of spatial data are discussed. And by means of superimposition of the different types of spatial data, the relative accuracy of the data can be inspected and the errors reduced effectively so that the quality of the spatial data is improved.

最后结合实例着重介绍了空间数据的精度检测和统计分析结果,提出了利用不同类型空间数据的叠加来检测数据相对精度,并能有效地削弱空间数据误差进而提高空间数据质量的方法。

Several SP2 mutant plants were obtained from induced Impatiens balsamina L.seeds by space flight,and their blades were investigated in this paper.The writer calculated the K-S statistics and the levene statistics,also made use of SPSS 11.5 to have the independent-samples t test and the univariate in the prerequisite of some fundamental presumptions.

对航天诱变凤仙花SP2代若干单株的叶片长度和宽度进行了统计分析,对试验数据进行了柯尔莫哥罗夫-斯米尔诺夫检验,计算了样本的列文统计量,并采用Spss 11.5统计分析软件检验了基本假设的满足条件,进行了独立样本t检验。

DC current monitoring data collected from neutral points of some transformers and geomagnetic storm data during many geomagnetic storms are performed comparative and relevant and statistical analysis sequently.

2对多次磁暴发生时采集的变压器中性点直流监测数据和磁暴数据进行对比分析、相关分析和统计分析,首次获得了中低纬电网GIC的特点和规律。

the study aims at the actual network status of one work section in daqing oil field,makes a network analysis and planning for the new mixed model of this work section,expends wireless network for the work section on the basis of existing network,and conjoins wire and wireless network together to form an integrated oil field information transfer system.at the same time,using opnet modeler simulation flat roof to structure simulation models (network models,node models and a process model),and analyzing the functions and work mechanism of the major modules for related models,making a simulation for the structured network models,then according to the different parameters,analyzing the individual statistics comparatively such as delay,data dropped and so on,the effects of data packet,data rate and fragmentation threshold to the network performance are gained.after all these,the best structure network scheme for this improved section is determined.

摘 要:此项研究主要针对大庆油田某作业区的实际网络现状,对该作业区进行网络分析和规划,在该作业区现有的有线网络基础上扩充无线网络,实现有线网与无线网的综合,构成一个完整的油田传输信息体系。同时利用opnet modeler仿真平台为该作业区新建混合网络建立仿真模型(网络模型、节点模型和进程模型),分析相关模型中主要模块的作用和工作机理,对已建立的网络模型进行仿真,在不同的参数设置下,通过对比分析时间延迟、丢包率等统计特性,得出数据包分组、数据率和拆分门限对网络性能的影响,最终决定改进网络的最佳组网方案。

At first, I collect and analyze the relative dates, and statistics fault models. Then I finish the analysis from three aspects, instruction of circuit, stress of surrounding, and tolerance, thus providing basis of design. The following designs are in progress from four aspects, which are circuit design, thermal design, derating using and screening. At last, I make the update generator in batch process, and collect and analyze reliability dates again. I proved that the life of the improved HF electrodless light is over to 60,000 hours.

首先进行了与可靠性相关的数据收集与分析,对故障模式进行统计;然后从电路结构、环境应力及容差三个方面进行可靠性分析,从而为关键的可靠性设计提供了依据;接下来的可靠性设计,从电路设计、热设计、降额使用、筛选四个方面逐一解决了可靠性分析阶段发现的问题;最后,我将改良的发生器批量生产,并从中重新收集了可靠性数据进行计算,事实证明改良后高频无极灯的平均寿命已达到6万小时。

It applies muti-element statistics to comprehensive settlement on datas to design a stepshaped index system,selects the principal component analysis to compare and analyze the data of 31 provines and cities of China in 2000. The orders of comprehensive economic power are given.

应用多元统计分析对数据的综合处理方法确定了指标体系,采用主成分分析法对全国31个省市的2000年数据进行比较分析,提出了用第一主成分作为度量一个地区综合经济实力的观点。

The quantitative and qualitative methodologies were both used in this thesis, andby presently observing of English Immersion classroom teaching and video taperecording, a lot of information about teacher-child speech interaction was collected. Theinternational Child Language Data Exchange System, known as CHILDES, wasadopted to analyze the collected information qualitatively and quantitatively.

本项研究采用量化研究和质性研究相结合的方法,通过对幼儿园大、中、小班英语浸入式教学活动的现场观察和录像收集师幼言语互动语料,运用国际通用的儿童语言数据交流系统——CHILDES,对收集到的师幼互动交流言语数据进行统计分析,在对研究资料进行量化分析的同时,对研究结果进行质性的分析和讨论,并提出了相应的教学建议。

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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.

然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

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A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.

付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。