信息经济对企业统计的挑战

企业统计作为信息的载体,面临着信息经济的挑战.企业统计要想生存发展,必须进行观念创新、技术创新、体制创新与人员创新.     

1994年四川省普通高等教育发展统计信息分析

从统计信息的角度详细分析了１９９４年四川省普通高教事业发展现状，既充分阐述了１９９４年四川省普通高教改革发展的成绩，也分析了其面临的问题，特别提出了办学条件与普通高教事业发展的矛盾是制约事业发展的主要因素，对四川省普通高教事业发展有宏观指导作用。     

统计学专业本科生开设“数据挖掘”课程的探讨

"数据挖掘"是一门分析海量数据库的交叉学科,统计学专业开设这门课程十分必要。鉴于数据挖掘内容的复杂多样,本文提出应根据统计学专业本科生的特点制订合理的教学大纲、教学内容和教学方法,以提高学生的学习效率和学习热情。     

医学统计学教学改革刍议

针对目前医学统计学教学中存在的问题，从教学内容的调整、教学方法的改进、教学手段的更新等方面入手。探讨如何提高医学统计学的教学质量，目的在于使医学生能够更好地掌握统计学这门学科，成为合格的医学人才。     

Unemployment duration and the measurement of unemployment

We propose a framework in which the welfare bases of various unemployment measures available in the literature can be analyzed and a decomposition of these measures can be made into aggregate unemployment and the concentration of its distribution. A set of axioms for an unemployment measure is then introduced, which relate to the sensitivity of an unemployment measure to the inequality in the distribution of the unemployment. An unemployment measure is derived on the basis of these axioms that captures the distributional considerations in the measurement of unemployment.      

家政女工生存状态及社工介入方式研究——基于社会支持理论

本文在调查研究的基础上,对昆明市家政女工的生存状态进行了描述和分析。针对家政女工所面对的困难和问题,拟从社会支持理论中寻求理论依据,并通过社会工作的手段进行介入,以期找到一种解决问题的途径和方式。     

Enrolment in initial courses in statistics: An exploratory study

In January 1981 a questionnaire was sent to 102 universities and colleges in Canada and the United States seeking information on enrolment in initial courses in statistics. That questionnaire has been analyzed and the results are presented in this paper.     

《醒世恒言》被动句式考察

对《醒世恒言》中的被动句式进行分类统计,从用量及结构等方面探讨“于”字式、“见”字式、“为”字式和“为……所”式这些上古汉语传统模式的衰微、“被”字式在近代汉语中的进一步发展以及“教”字式、“与”字式、“吃”字式这些近代汉语才产生的被动式的特点,从而阐述被动句式在近代汉语中的发展概貌。     

Growth and Heat Resistance Kinetic Variation Among Various Isolates of Salmonella and its Application to Risk Assessment

The abilities of cells of a particular type of bacteria to leave lag phase and begin the process of dividing or surviving heat treatment can depend on the serotypes or strains of the bacteria. This article reports an investigation of serotype-specific differences in growth and heat resistance kinetics of clinical and food isolates of Salmonella. Growth kinetics at 19 degrees C and 37 degrees C were examined in brain heart infusion broth and heat resistance kinetics for 60 degrees C were examined in beef gravy using a submerged coil heating apparatus. Estimates of the parameters of the growth curves suggests a small between-serotype variance of the growth kinetics. However, for inactivation, the results suggest a significant between-serotype effect on the asymptotic D-values, with an estimated between-serotype CV of about 20%. In microbial risk assessment, predictive microbiology is used to estimate growth and inactivation of pathogens. Often the data used for estimating the growth or inactivation kinetics are based on measurements on a cocktail--a mixture of approximately equal proportions of several serotypes or strains of the pathogen being studied. The expected growth or inactivation rates derived from data using cocktails are biased, reflecting the characteristics of the fastest growing or most heat resistant serotype of the cocktail. In this article, an adjustment to decrease this possible bias in a risk assessment is offered. The article also presents discussion of the effect on estimating growth when stochastic assumptions are incorporated in the model. In particular, equations describing the variation of relative growth are derived, accounting for the stochastic variations of the division of cells. For small numbers of cells, the expected value of the relative growth is not an appropriate "representative" value for actual relative growths that might occur.     

统计学发展过程中四次重要的争论及其影响

统计学发展过程中出现过几次重大的争论,这些争论在本质上可以说是一脉相承的。"政治算术"与"国势学"的争论,明确了统计学的学科性质;"描述统计学"与"推断统计学"的争论,构筑了统计学的完整体系;"经典统计学"与"贝叶斯统计学"的争论,带来了统计哲学观的新变化;信念统计学与经典统计学、贝叶斯统计学的争论,使统计推断科学化问题的研究日趋深入。正是通过这些争论完善了现代统计学的思想和方法体系。