区域产业结构调整与金融支持

社会化大生产条件下不仅资本与产业高度融合,而且资本对产业结构的调整具有重大的推动作用。促进区域产业结构调整的投融资对策是:构建区域性金融中心、建立现代农村金融体系、进一步完善资本市场、继续加大中西部吸引外商直接投资的力度、大力发展风险投资、积极推行产业投资基金、规范民间金融、充分发挥政策性投资的引导作用。     

关于给农民"国民待遇"的法学思考

导致中国农民长期受歧视的制度性基础是20世纪50年代以后形成的二元社会结构.改革开放以来这种结构没有根本改变,而且又出现了农民因身份而受歧视的两个突出现象:一是因违法征地造成大批"三无"失地农民;二是在城市里农民工备受歧视.给农民"国民待遇"是中国政府应当履行的国际义务,为此必须切实采取下列两项对策:一是确保村民会议是农村土地集体所有权的决策主体;二是中国农民工的权利不应低于国际迁徙工人的权利.     

Group cooperation under uncertainty

Previous research has shown an ‘interindividual-intergroup discontinuity effect’: intergroup interactions generally lead to less cooperative outcomes than interindividual interactions. We replicate the discontinuity effect in the deterministic prisoner’s dilemma, but find that groups are more cooperative than individuals in a stochastic version of the game. Three major factors that underlie the usual discontinuity effect are reduced in the stochastic environment: greed, fear, and persuasion power. Two group mechanisms are proposed to explain the reversed discontinuity effect: the motivation to avoid guilt and blame when making decisions that affect others’ welfare, and the social pressure to conform to certain norms when one is in a group setting.     

省际竞争对中国农业的影响

我国省际农业竞争存在负向空间溢出效应,对农业生产率产生了负向影响,这一消极影响随时间呈逐步扩大趋势,并在不同区域普遍存在。各省同构化的农业生产结构抑制了农业增长速度。我国农业发展应根据各省的资源禀赋,发挥比较优势、优化区域布局、鼓励差异化发展,从而减少负溢出效应和生产率损失,并通过提高教育水平、增加涉农财政支出、改善灌溉等基础设施条件,实现“乡村振兴”战略中的“产业兴旺”目标。     

Tobit regression for modeling mean survival time using data subject to multiple sources of censoring

Mean survival time is often of inherent interest in medical and epidemiologic studies. In the presence of censoring and when covariate effects are of interest, Cox regression is the strong default, but mostly due to convenience and familiarity. When survival times are uncensored, covariate effects can be estimated as differences in mean survival through linear regression. Tobit regression can validly be performed through maximum likelihood when the censoring times are fixed (ie, known for each subject, even in cases where the outcome is observed). However, Tobit regression is generally inapplicable when the response is subject to random right censoring. We propose Tobit regression methods based on weighted maximum likelihood which are applicable to survival times subject to both fixed and random censoring times. Under the proposed approach, known right censoring is handled naturally through the Tobit model, with inverse probability of censoring weighting used to overcome random censoring. Essentially, the re‐weighting data are intended to represent those that would have been observed in the absence of random censoring. We develop methods for estimating the Tobit regression parameter, then the population mean survival time. A closed form large‐sample variance estimator is proposed for the regression parameter estimator, with a semiparametric bootstrap standard error estimator derived for the population mean. The proposed methods are easily implementable using standard software. Finite‐sample properties are assessed through simulation. The methods are applied to a large cohort of patients wait‐listed for kidney transplantation.     

论新民主主义社会与社会主义初级阶段的内在联系

新民主主义社会不是一个独立的社会形态,是一个过渡性质的社会。社会主义初级阶段开始于1956年,是指我国生产力落后、商品经济不发达条件下建设社会主义必然要经历的特定阶段。二者在总体目标、经济、政治、文化等方面有许多相似之处,存在着许多内在联系。     

从以色列撤离加沙看巴勒斯坦问题的解决前景

巴勒斯坦问题的最终解决将以建立独立的拥有永久边界的巴勒斯坦国而告终.至于在未来一段时间内是建立拥有临时边界和主权象征的巴勒斯坦国,还是建立独立的拥有永久边界的巴勒斯坦国则取决于巴以和谈的结果.以色列可能有条件地从它1967年第三次中东战争中所占领的约旦河西岸的大部分土地上撤走,在巴以谈判中以1949年停战线即"绿线"为基础,进行小幅度调整.     

伊拉克大选及其影响

伊拉克独立选举委员会2月13日宣布,什叶派政党联盟伊拉克团结联盟在1月30日举行的大选中共获407.5万张选票,支持率为48%,得票率稳居第一.     

Asymptotic properties of mean survival estimate based on the Kaplan-Meier curve with an extrapolated tail

Asymptotic distribution of the mean survival time based on the Kaplan-Meier curve with an extrapolated 'tail' is derived. A closed formula of the variance estimate is provided. Asymptotic properties of the estimator were studied in a simulation study, which showed that this estimator was unbiased with proper coverage probability and followed a normal distribution. An example is used to demonstrate the application of this estimator.     

碉生三器中“公”及相关问题的补论

五年、六年琱生簋中的“妇氏”“君氏”分别指的是召伯虎与琱生的母亲、父亲。五年琱生尊中“召姜”即谥号为“幽姜”的“妇氏”,为召虎之母;“君氏”即六年簋铭之“宗君”死后谥号为“幽伯”,为召虎之父。琱生三器中“公仆庸土田”“公厥禀贝”“其兄公”之“公”都可以作“公家”解。其他如“召公”“烈祖召公”应是指召伯虎之祖父。作为宗子身份的祖先死后可以被谥称为“某公”,宗子在世时族内可以他称为“公”,“其兄公”与“召公”之称“公”非以职官故,而是宗子身份的一种体现。