企业财务状况与投资者关系管理--来自 IR 百强上市公司的经验证据

依据“2007年度中国最佳投资者关系管理百强”榜的评选结果,研究了企业财务状况对上市公司投资者关系管理的影响.结果表明,投资者关系管理与企业盈利能力负相关,与股东获利能力、发展能力以及企业现金流量能力正相关.研究还发现,公司规模和流通股比例有利于提升投资者关系管理水平.     

“三公经费”公开：意义、现状及完善——以中央部门“三公经费”公开为例

“三公经费”公开具有重要的现实意义。在中央政府整体部署和公众广泛呼吁下，“三公经费”公开进程开始启动，并取得了初步成绩，但“三公经费”公开仍然存在许多亟待解决的问题，不能满足公众强烈的监督需求。完善“三公经费”公开，必须修订相关法律法规，加快研究制订“三公经费”公开的实施细则，明确“三公经费”公开的监督主体，完善监督流程，建立健全“三公经费”公开考核和责任追究制度。     

新形势下企业共青团工作的现状及对策

社会主义青年团是青年的先进组织，是中国共产党的预备队。青年是未来、是国家的希望。做好青年工作，尤其是共青团的组织工作，对国家兴衰、事业成败有着不可替代的作用；本文就目前国有企事业单位青年团组织的现状及对策提出了个人的一些意见。     

论我校土地资源管理专业本科教育的现状及其展望

文章简要介绍了广东工业大学土地资源管理专业本科教育的发展概况 ,并详细阐述了我校土地资源管理专业本科教育的课程体系设置及其特色 ,对今后我校土地资源管理专业本科教育的进一步发展提出了自己的思路与对策     

Choice of Parametric Accelerated Life and Proportional Hazards Models for Survival Data: Asymptotic Results

We discuss the impact of misspecifying fully parametric proportional hazards and accelerated life models. For the uncensored case, misspecified accelerated life models give asymptotically unbiased estimates of covariate effect, but the shape and scale parameters depend on the misspecification. The covariate, shape and scale parameters differ in the censored case. Parametric proportional hazards models do not have a sound justification for general use: estimates from misspecified models can be very biased, and misleading results for the shape of the hazard function can arise. Misspecified survival functions are more biased at the extremes than the centre. Asymptotic and first order results are compared. If a model is misspecified, the size of Wald tests will be underestimated. Use of the sandwich estimator of standard error gives tests of the correct size, but misspecification leads to a loss of power. Accelerated life models are more robust to misspecification because of their log-linear form. In preliminary data analysis, practitioners should investigate proportional hazards and accelerated life models; software is readily available for several such models.     

大学生现状对思想政治工作者的素质要求

调查表明,大学生现状发生了一系列变化,表现在:知识需求的多向度;价值取向的多元性;社会观念心理因素在愿 望与玩笑之间的差距、矛盾;问题分析能力存在肤浅、片面性;一般来说都怀有较高的政治热情。这些变化要求高校思想政治工 作者加强磨炼过硬的政治素质,高尚的思想道德素质、深厚的知识素质,较强的能力素质。     

群体归因偏差及矫正策略

转型期社会群体对于社会认知和人的发展的归因偏差主要表现在过度归因于体制和政策、社会认识偏差、人情认知偏差、社会浮躁心态与社会牢骚等方面。因此,应通过克服归因从众心理,克服群体归因极化模式,提高元认知水平和强化自我控制等对策,使个体与群体都能得到良好的发展,更好地促进社会发展。     

公共管理部门的目标管理现状及对策研究

公共管理部门的目标管理存在着视目标管理为灵丹妙药、考核方法单一、不注重成本、考核缺乏科学性等误区。为此 ,应转变“目标就是万能”的观念 ,建立量化和非量化相结合的指标体系 ,运用系统论思想建立目标管理的分层结构 ,建立具有公共管理特色的管理体系。     

Estimating population size with truncated sampling

Let X₁, X₂,…,X_n be independent, indentically distributed random variables with density f(x,θ) with respect to a σ-finite measure μ. Let R be a measurable set in the sample space X. The value of X is observable if X ? (X?R) and not otherwise. The number J of observable X’s is binomial, N, Q, Q = 1?P(X ? R). On the basis of J observations, it is desired to estimate N and θ. Estimators considered are conditional and unconditional maximum likelihood and modified maximum likelihood using a prior weight function to modify the likelihood before maximizing. Asymptotic expansions are developed for the [Ncirc]’s of the form [Ncirc] = N + α√N + β + o_p(1), where α and β are random variables. All estimators have the same α, which has mean 0, variance σ² (a function of θ) and is asymptotically normal. Hence all are asymptotically equivalent by the usual limit distributional theory. The β’s differ and Eβ can be considered an “asymptotic bias”. Formulas are developed to compare the asymptotic biases of the various estimators. For a scale parameter family of absolutely continuous distributions with X = (0,∞) and R = (T,∞), special formuli are developed and a best estimator is found.     

Admissible minimum bias estimation of response surfaces

The minimum bias estimator was introduced as an alternative to the least squares estimator for approximating response functions by low-order polynomials. Here we show how to obtain an admissible estimator with smaller squared bias.