Comparing Fisher information in record values and their concomitants with random observations

In a sequence of bivariate random variables {(X _i , Y _i ), i≥1} from a continuous distribution with a real parameter θ, general comparison results between the amount of Fisher information about θ contained in the sequence of the first n records and their concomitants, and the desired information in an i.i.d. sample of size n from the parent distribution are established. Some relationships between reliability properties and the proposed criteria are obtained in situations in which the univariate counterpart of the underlying bivariate family belongs to location, scale or shape families. It is also shown that in some classes of bivariate families, the concerned information property is equivalent to that of its univariate counterpart. The proposed procedure is illustrated by considering several examples.     

基于面板数据的中国供电行业 规模收益分析

 公共事业企业的规模收益关系到政府监管策略的选择。近年有关中国电力行业运营规模与效率的研究主要集中在电力需求和电价调整方面，本文利用具有面板数据模型形式的成本函数，分析资本和劳动力要素投入对企业规模收益及经营效率的影响程度。主要结论是，电力供应机制的运行受劳动力因素的制约较大，企业规模收益呈递增趋势；劳动力价格对成本的长期影响明显大于短期。     

对教育去行政化的理性思考

表面上，教育行政化主要表现为学校的行政级别问题；实质上，教育行政化是指行政权力对教育的过度干预，表现为教育目标、教育理念和教育管理模式的行政化。行政化是中国教育现代化的主要障碍，去行政化是中国教育发展的主要趋势，但受体制、观念的影响，中国教育去行政化还任重道远。，     

英语写作元认知的构架研究

本将元认知理论运用到英语写作教学中,探讨了写作元认知的概念和构架。     

邓小平“军费观“及其实践价值

确立合理的军费规模和结构,一直是我国国防经济理论与实践中的一个重要问题.邓小平同志于20世纪80年代提出的保持适当军费规模和结构的思想,在我们解决新时期国防建设中的相关问题时仍具有重要的实践价值.贯彻邓小平同志的这一思想,我们应该适度加大军费支出、调整军费支出结构,同时加强军费管理水平,力争实现国民经济发展和巩固国防的双赢局面.     

论政府规模理论的建构

依据政府规模的构成要素和影响政府规模变化的主要因素的分析,衡量政府规模适度化应当有四个标准:政府与市场的耦合度;政府对资源的支配度;政府财政的约束度;公共产品的供给度.因此,政府规模的调适机制应从如下几个方面建立:输入系统与政府规模的界定;转换系统与政府规模的设定;输出系统与政府规模的调控;反馈系统与政府规模的再适.     

Sense of coherence in women with a history of childhood sexual abuse

Women with a history of childhood sexual abuse experience a range of difficulties. The aim of the present study is to examine the personal resources of women with such a history measured using the SOC scale. The relationships of SOC to other factors were analysed. Eighty-one women who participated in self-help groups were questioned using the 29-item version of the SOC scale. The SOC mean score for the whole group was 104.1 (range 58–187). The women who had a more than ten-year duration of sexual abuse had a low SOC score (M = 96.8) but those who did not remember the number of years of duration had an even lower score (M = 94.4). In a first step of multiple regression analysis of childhood sexual abuse characteristics and SOC total score, only duration of sexual abuse was entered and accounted for 10.3 per cent of the variance. In a second step of multiple regression analysis, relationship to fellow workers was a significant predictor of SOC and contributed to 31.7 per cent of the variance.     

密度经济与自然垄断

经济学对自然垄断成因的解释有“规模经济”和“成本劣加性”等学说。对于现代自然垄断集中于网络型产业,近年来学者们都以“网络经济”说予以解释,并提出了规模经济、范围经济和网络经济结合的所谓“三位一体”的自然垄断理论。本文以城市自来水行业为例,对网络型产业各环节的成本特性进行具体分析,揭示现代自然垄断收敛于网络型产业是因为网络系统所特有的“密度经济”效应,为现代自然垄断现象提供了一种全新的、更具一般意义的理论解释。     

连锁商业企业规模扩张的经济学思考

连锁商业企业在发展中也具有一种规模扩张的本能冲动,且其规模经济明显。但这并非意味着所有的连锁商业企业通过规模扩张都能实现规模经济效益。事实已充分证明了这一点。目前,理论上的盲点和实践上的盲动,使我国连锁商业企业的规模扩张日益演变为一场声势浩大的“运动”。所以,理清企业规模扩张理论,探索其内在规律,并用以正确指导我国连锁商业企业扩张的实践,具有重要的现实意义。     

家庭社会资本与家庭收入关系的实证检验

依据社会资本理论,采用调查数据,用网络规模、网络差异、社会参与程度和信任程度四个变量来测量家庭社会资本。通过建立模型实证分析,我们发现,家庭社会资本存在较大差异;社会资本对家庭收入存在很明显的正向影响。