水利基建统计工作中的问题与优化途径分析

本文以水利基础建设统计工作中的问题与优化途径分析为主要内容进行阐述,结合当下基层水利工程统计工作出现的问题和水利统计工作优化对策为主要依据,首先分析了原始数据搜集时效性欠佳、水利基建统计人员对统计工作认识不足、意识不强,其次从提升水利统计工作认知、深化基层水利统计工作改革步伐、实现水利统计信息化转型、完善水利统计给工作机制、创新水利统计手段这几方面进行探讨和分析,其目的在于提升水利统计工作的时效性,实现统计数据共享,推动水利行业发展,旨在为相关研究提供参考资料。     

基层环境统计年报工作中存在的问题及对策

环境统计是环境保护的基础工作,随着经济社会的发展,越来越受到重视。在基层环境统计工作经历中,分析总结了当前环境统计年报工作中存在的一些问题,并提出了相应的对策和建议,以期为提高环境统计工作效率和数据质量提供一些参考。     

环境统计工作存在的问题及解决方法

我国自1983年开展环境统计工作以来,环境统计范围不断扩展,环境统计制度不断完善,环境统计数据在综合反映环境状况、服务环境管理和科学决策方面起到了重要的基础性作用。随着我国经济的快速发展,环境问题越来越受到重视,对环境统计数据的需求越来越多,对环境统计在全面性、及时性、准确性以及综合分析等方面提出更高的要求。现行的环境统计已不适应形势发展的需要,必须进行改革。要加强环境统计工作改革步伐,简化指标,提高效率,要及时、准确地提供统计数据,客观地反映经济发展与环境形势的变化,真正为环境管理和决策服务。     

浅议企业统计工作的难点与对策

企业统计工作关系到企业的生存与发展。针对目前企业统计工作中存在的一些难点和问题,探亲性地提出了解决对策。     

浅议市场经济条件下企业管理中的统计工作

随着社会主义市场经济体制的建立和完善,统计工作对国家宏观调控,对企业微观管理具有愈来愈重要的作用。市场经济中企业经营机制的模式是建立现代企业制度,这项改革对企业各方面的管理工作都是一个严峻的挑战,企业的统计工作也不例外。根据现代企业制度“产权明晰、责...     

浅析江西省环境统计工作中存在的问题及建议

本文结合多年从事环境统计工作的实际,分析了环境统计工作中存在的问题,并提出了一些建议.     

关于基层采油统计工作的论述

本文着眼于采油企业的统计的基础工作,通过对采油统计的监管、目前统计存在的问题及如何加强统计的管理等几大问题的论述．阐述了基层统计工作的一些细节,同时为提高采油率,增加统计的可靠性提供了必要的理论依据。     

论环境统计分析

本文综述了个人从事环境统计工作以来对此项工作的一些认识，阐述了环境统计工作及统计分析在现代社会的重要性，并提出了存在的问题。     

《大气污染控制工程》课程实验教学建设与创新

实验教学在培养学生的创新意识和创新实践能力方面具有重要意义。南昌航空大学环境工程专业结合工程教育专业认证工作,针对大气污染控制工程实验教学从实验内容、实验教学形式、实验考核等不同方面进行了一系列改革。改革培养了学生的创新意识和工程实践能力,取得了良好成效。对于现有改革后仍然存在的一些问题,本文进行了剖析,并提出了进一步建设的意见。     

论病案统计信息的开发利用在医院改革发展中的作用

社会的进步推动了医疗卫生事业的稳定发展,并且一系列改革工作也在不断开展,提升医疗卫生管理工作水平是提升医疗水平的关键。病案统计信息是医院工作的重要参考信息。为此强调病案统计信息的开发和利用意义显著。本文就此展开了深入探讨。     

统计知识在企业经营活动分析中的运用

灵活运用统计计算方法、统计图表、统计分析方法对企业生产经营目标计划完成情况进行分析，分析查找影响目标计划完成主要原因。     

基于LTSA和联合指标的非高斯过程监控方法及应用

很多实际工业过程数据都具有高维、非线性且不严格服从高斯分布等特点。为处理数据维数高且是高斯分布和非高斯分布的混合体等问题,实现高效的过程监控,提出了一种基于LTSA和联合指标的非高斯过程监控方法。首先采用局部切空间排列(LTSA)算法从正常样本数据中提取低维子流形以实现维数约减;然后基于非高斯-高斯两步策略建立统计模型并得到非高斯统计量和高斯统计量,再对其进行加权得到新的统计量以实现对过程的监控;最后将该方法应用于田纳西-伊斯曼标准测试平台和实际乙烯裂解炉的过程监控,说明了所提方法的有效性。     

高师院校统计热力学教学实践与探索

统计热力学是物理化学的重要组成部分,包含许多抽象的概念和复杂的公式。笔者从统计热力学课程特点和自身教学实践出发,分析了统计热力学教学中存在的问题,对如何提高统计热力学教学质量提出了建议。     

Monetary loss surveillance for credit models

There is a vast collection of statistical methodologies devoted tomeasure the customer's credit risk. Well-known statistical techniques are logistic regression, genetic algorithms, and support vector machines, among others. However, there is a lack of statistical tools for monitoring monetary losses implied by a given credit model in operation. This article introduces a sequential procedure to favor such monitoring. Our method favors early detection of increased expected monetary losses. Analytical expressions are derived for the calculation of the statistical power performance of the proposed method. An application for a credit portfolio of a German bank is offered.     

Statistics of ceramic strength: Use ordinary Weibull distribution function or Weibull statistical fracture theory?

“Weibull statistics” for strength distribution analysis refers to either the ordinary Weibull distribution function or the Weibull statistical fracture theory. The ordinary Weibull distribution function is an empirical distribution function on an equal footing with other type of classical empirical distributions such as normal and log-normal distributions for fitting the statistical data of various random variables nonexclusive to materials strength. It has no explicit physical meaning and cannot be used for size scaling and prediction of strength. The Weibull statistical fracture theory is a weakest-link statistical fracture model for a solid with the strength distribution of an elemental volume being described by the ordinary Weibull distribution function. It has the capability of size scaling and prediction of strength for specimens with different geometries and different loading modes. The three-parameter Weibull statistical fracture theory in uniaxial flexure of prismatic beams is reformulated and validated by both numerical and real strength experiments of different ceramics.     

Statistical methods in public health and epidemiology: a look at the recent past and projections for the next decade

This article attempts to prognosticate from past patterns, the type of statistical methods that will be used in published public health and epidemiological studies in the decade that follows the millennium. With this in mind, we conducted a study that would characterize trends in use of statistical methods in two major public health journals: the American Journal of Public Health, and the American Journal of Epidemiology. We took a probability sample of 348 articles published in these journals between 1970 and 1998. For each article sampled, we abstracted information on the design of the study and the types of statistical methods used in the article. Our major findings are that the proportion of articles using statistical methods as well as the mean number of statistical methods used per article has increased dramatically over the three decades surveyed. Also, the proportion of published articles using study designs that we classified as analytic has increased over the years. We also examined patterns of use in these journals of three statistical methodologies: logistic regression, proportional hazards regression, and methods for analysis of data from complex sample surveys. These methods were selected because they had been introduced initially in the late 1960s or early 1970s and had made considerable impact on data analysis in the biomedical sciences in the 1970s-90s. Estimated usage of each of these techniques remained relatively low until user-friendly software became available. Our overall conclusions are that new statistical methods are developed on the basis of need, disseminated to potential users over a course of many years, and often do not reach maximum use until tools for their comfortable use are made readily available to potential users. Based on these conclusions, we identify certain needs that are not now being met and which are likely to generate new statistical methodologies that we will see in the next decade.     

Synthesis of phosphonated styrenic copolymers and their chemical modifications

We report, for the first time, the synthesis of a phosphonated styrenic monomer dimethyl vinylbenzyl phosphonate (VBP) according to the methods described in the literature for its equivalent diethyl vinylbenzyl phosphonate, and also the monodealkylation of this monomer (VBP) to the monosalt in a neutral medium and to the corresponding monoacid via a sulfonic resin. Various statistical copolymers and statistical block copolymers of styrene and VBP were prepared with different molar percentages of these comonomers. The dealkylation of statistical copolymers was carried out in the same way as for VBP. The phosphonated statistical copolymers, prepared, were characterized by various analytical methods which show good agreement with their structures. © 2002 Society of Chemical Industry     

甘油果糖联合多巴胺、立其丁治疗大面积脑梗死引起的脑水肿的临床研究

目的探讨治疗大面积脑梗死引起的脑水肿的治疗方案。方法对312例大面积脑梗死病人随机分为治疗组及对照组,治疗结果进行回顾性分析。结果经统计学处理肾功能衰竭的发生情况,治疗组与对照组相比差异有统计学意义(P<0.01);2组疗效情况,治疗组与对照组相比有效率差异有统计学意义(P<0.01),治疗组病程的恶化率及死亡率明显低于对照组。结论甘露醇与甘油果糖联用;早期应用小剂量多巴胺、立其丁;小剂量应用甘露醇,滴速不能过快,疗程不能过长。以上方法能有效防治甘露醇治疗大面积脑梗死引起的急性肾功衰竭,提高大面积脑梗死的总有效率,降低恶化率及死亡率。     

统计过程控制(SPC)在精密管材生产中的应用

简要介绍统计过程控制的原理,总结影响管材挤出流率的因素,并通过精密管材SPC实验结果进行了分析。