论老字号的认定和分类标准

老字号是长寿的企业和企业名称品牌,是体现中国文化特质的企业形态。以北京西城老字号为研究对象,在认真总结近年来各级政府相关政策制定及实施情况的基础上,科学确定老字号的分级认定条件和分级标准体系,对于确立和提升老字号的社会地位,更好地发挥老字号在提供行业示范、优化产业结构、完善地区形象、充实城市精神、推动中华民族优秀文化传承方面的作用,扩大老字号的社会影响,以及探索新的研究思路和方法,都具有十分重要的意义。     

对民族高校图书分类法中以人分类诸问题刍议

本文通过对国内使用较广泛的三部分类法中存在的以人分类问题的思考,以及对所设类目的内涵及分类理论、分类原则等的分析,认为以人分类既不科学,也不利于与国际分类法的统一与规范.文章提出,根据时代发展需要,探寻科学的图书分类方法,逐步改变我国民族高校图书分类法中以人分类的旧模式,将是图书分类史上的大势所趋.     

An efficient model-free estimation of multiclass conditional probability

Conventional multiclass conditional probability estimation methods, such as Fisher's discriminate analysis and logistic regression, often require restrictive distributional model assumption. In this paper, a model-free estimation method is proposed to estimate multiclass conditional probability through a series of conditional quantile regression functions. Specifically, the conditional class probability is formulated as a difference of corresponding cumulative distribution functions, where the cumulative distribution functions can be converted from the estimated conditional quantile regression functions. The proposed estimation method is also efficient as its computation cost does not increase exponentially with the number of classes. The theoretical and numerical studies demonstrate that the proposed estimation method is highly competitive against the existing competitors, especially when the number of classes is relatively large.     

On the unbiased estimation of fixed effects in a mixed model for growth curves

A mixed model for growth curves is introduced. A method of estimating the variance components is indicated. It is shown that the generalised least squares estimates of the fixed effects using estimates of variance components are unbiased and an expression is obtained for the increase in variance due to the substitution of the variances by their estimates. These results are directly applied to designs with two-way elimination of heterogeneity.     

Some issues in logistic regression

Much research has been performed in the area of multiple linear regression, with the resuit that the field is well-developed. This is not true of logistic regression, however. The latter presents special problems because the response is not continuous. Some of these problems are: the difficulty of developing a suitable R² statistic, possibly poor results produced by the method of maximum likelihood, and the challenge to develop suitable graphical techniques. We describe recent work in some of these directions, and discuss the need for additional research.     

Estimating the asymptotic relative efficiency of weighted rankings

Five tests for the hypothesis of no treatment effects in complete blocks designs are compared with respect to asymptotic relative efficiency: the ordinary two-way analysis of variance, the analysis of variance of ranks (Friedman, 1937), the method of ranking after alignment (Hodges and Lehmann, 1962), and a method of weighted rankings proposed by Quade (1972, 1979). This comparison required devising a procedure for estimating the asymptotic relative efficiencies of test statistics with asymp-totic chi-squared distributions.     

Classification rules for two parameter exponential populations under order restrictions on parameters

In this paper, we suggest classification procedures of an observation into one of two exponential populations assuming a known ordering between population parameters. We propose classification rules when either location or scale parameters are ordered. Some of these classification rules under ordering are better than usual classification rules with respect to the expected probability of correct classification. We also derive likelihood ratio-based classification rules. Comparison of these classification rules has been done using Monte Carlo simulations.     

北京建设世界城市之民生住房保障体系对策研究

稳定的社会环境是北京建设世界城市的根基。综合考察北京的阶层收入差距、北京房价和北京的经济实力以及进一步城市化的需求,本文认为北京建设世界城市要加强民生住房保障体系建设和管理。本文就此提出相应对策,这个对策的基本思路是:需求-分级-分配-流转-退出一体化;土地-资金来源多元化、用途专一化;法律-法规-政策-监控一体化。这三者形成统一整体,统一执行。     

我国农业土地产权结构的分类及发展趋势

产权关系既是一种法律关系,又是一种经济关系。农村的产权关系同时还包括一种社会伦理道德关系。通 过分析农村产权关系的典型,对辽宁省锦州市的农村农业产权关系及其结构设想了一种大胆的发展趋势,供诸位同仁探 讨,供相关国家部门决策时参考。