农民工心理健康现状及其影响因素研究——来自8城市的调查分析

利用2014年国家卫计委数据,从消极、积极心理状态两个维度,分析农民工心理健康的现状,综合考察人口因素、流动因素、经济因素、社会因素和文化因素对其的影响作用。研究发现,农民工心理健康各维度的发展并不平衡:其消极心理状态不差,但积极心理状态欠佳。改善经济状况和加强文化适应对农民工心理健康均无消极影响,但社会因素的影响较为复杂。五类因素对心理健康的解释贡献存在差异:人口因素对消极心理状态的解释比例最高;流动因素对心理健康各维度的解释程度均很低;经济因素对积极心理状态的解释贡献十分突出;社会、文化因素对消极心理状态的解释比例不容忽视。     

Control‐based imputation for sensitivity analyses in informative censoring for recurrent event data

In clinical trials, missing data commonly arise through nonadherence to the randomized treatment or to study procedure. For trials in which recurrent event endpoints are of interests, conventional analyses using the proportional intensity model or the count model assume that the data are missing at random, which cannot be tested using the observed data alone. Thus, sensitivity analyses are recommended. We implement the control‐based multiple imputation as sensitivity analyses for the recurrent event data. We model the recurrent event using a piecewise exponential proportional intensity model with frailty and sample the parameters from the posterior distribution. We impute the number of events after dropped out and correct the variance estimation using a bootstrap procedure. We apply the method to an application of sitagliptin study.     

论毛泽东教育思想及其当代价值

毛泽东教育思想是我国教育事业改革发展的指导思想。毛泽东教育思想的主要内容包括：教育与生产劳动相结合的原则;教育教学改革的思想;德、智、体全面发展的素质教育观;教育为人民大众服务的思想等等。毛泽东教育思想对加快我国教育事业的改革发展,培养适应社会主义现代化建设全面发展的高素质人才具有重要的现实意义。     

A robust QTL mapping procedure

In quantitative trait linkage studies using experimental crosses, the conventional normal location-shift model or other parameterizations may be unnecessarily restrictive. We generalize the mapping problem to a genuine nonparametric setup and provide a robust estimation procedure for the situation where the underlying phenotype distributions are completely unspecified. Classical Wilcoxon–Mann–Whitney statistics are employed for point and interval estimation of QTL positions and effects.     

大学的法治与大学生权利保护

大学法治要求大学的管理者在处理大学各项事务中必须体现法治精神,依法决策、依法办事,把学校各项工作纳入法治化轨道.由于观念因素和制度因素的缺陷,大学生在受教育权、名誉权、隐私权、财产权、申诉权等方面还不同程度的受到一定侵犯.因此,作为管理者的大学还需要更新管理理念,强化法治意识,健全程序法治,推进民主建设,完善申诉机制,落实权利救济.     

中国上市商业银行汇率风险实证研究

2005年中国汇率制度改革以后,汇率风险成为中国商业银行面临的主要市场风险之一.商业银行汇率风险估计主要有两种方法--资本市场法和现金流法,现有的现金流法模型不适用于中国商业银行,需要进行改进.通过资本市场法和现金流法对中国上市银行的汇率风险进行实证分析,结果发现:现金流法比资本市场法计算的汇率风险更敏感;中国银行面临最为显著的汇率风险,并且人民币升值会使得中国银行的股票收益率下跌,主营业务收入减少等.     

煤炭开发与欠发达地区经济增长——对"资源诅咒"的再考察

我国煤炭大都集中分布在欠发达地区,因此煤炭资源开发与区域经济增长的关系研究成为资源经济和区域经济研究中的重要问题,而对"资源诅咒"及其传导机制的研究是这个问题的热点.本文利用贵州省地区层面面板数据控制了导致经济欠发达的非资源因素来单纯考察煤炭资源开发与当地经济发展的关系.实证结果发现在1997年之前,煤炭开发对经济增长存在负效应,且这种负效应主要源于不利的煤炭价格体系;1997年之后煤炭开发对经济增长率有着正相关的影响,且这种促进作用主要源于宏观的煤炭开发政策.本文的研究对理解"资源诅咒"现象在我国的发生特征,以及煤炭资源富集的欠发达地区经济发展问题具有一定的启示意义.     

A socio-ecological perspective of urban green networks: the Stockholm case

Landscape fragmentation threatens habitats, biodiversity and other ecosystem services. In tackling this threat, the dynamic processes of social-ecological systems should be recognised and understood. Although network analysis based on graph theory has been recognised as an efficient way of spatially understanding landscape or habitat connectivity, only few studies have offered specific approaches or suggestions for integrating detailed social-ecological values into geographical distributions. As a contribution to bridging this gap, this paper introduces a social-ecological network model for the issue of landscape or habitat fragmentation applied to the case of Stockholm, Sweden. Graph theory was used in combination with sociotope and biotope maps for simple visualisation of network situations in two-dimensional maps. The European crested tit (Lophophanes cristatus), European common toad (Bufo bufo) and human beings were selected as indicator species, based on a landscape ecology analysis in Stockholm Municipality in 2009. Slope, land use and human disturbance maps were assessed in order to decide cost values of travelling from node to node. Lease-cost-path accumulation was used to create ideal reference maps of green networks. Three separate maps were then developed for suggesting efficient routes for three indicators in city scale that mainly connect from the Royal National City Park to the other parts of the city. The model in Hjorthagen neighbourhood to highlight two practical paths that link this fragmented community to its neighbouring park areas. Findings make it possible to address two scales of network improvement strategies, namely first for the city-scale green network that connects geographical habitats (nodes) and the regional green wedges of the city, and the second that of neighbourhood links between habitats in detailed layers of green networks. Strategic improvement potentials are presented based on ideal reference maps of green networks correspondingly.     

Sexual objectification decreases women’s experiential consumption (but not material consumption)

The current investigation examined our prediction that sexual objectification decreases women’s experiential consumption but not material consumption. Three experiments provided converging support for this prediction. In particular, female participants reported lower tendency to engage in experiential consumption after recalling a past experience of objectification (Studies 1 and 3) and chose a material product over an experiential one after receiving objectifying comments (Study 2). Furthermore, Study 3 found that sexual objectification reduced purchase inclination of experiential products, and this effect did not emerge for material products. These findings contribute to the literature on sexual objectification by showing the impact of sexual objectification on women’s economic decisions and behaviors.     

试论国家助学贷款良性运行机制建立之对策

国家助学贷款是利用金融手段完善我国普通高校资助政策体系,加大对经济困难学生资助力度所采取的一项重大措施。运行中存在问题是当前市场经济法制不健全、社会信用部分失范的必然结果。要形成大学生助学贷款良性运行机制,必须建立国家、银行、高校、学生与社会"五位一体"的联合保障机制。最重要的是应尽快建立全国性的以居民身份证号码为依托的"全国大学生信用网",并以此作为建立全国性的信用机制的开端。要在全社会形成一种讲诚信光荣、不讲诚信可耻的持久氛围,让信用缺失者无论在何处都要为自己的行为付出代价。此外还应大力发展学生生源所在地贷款业务。