晋陕蒙汉族民歌核心区析论

在晋陕蒙汉族民歌类型区划、结构区划的基础上，聚焦榆林—忻州民歌核心区，指出其具有四个方面的特征:民歌数量巨大，体裁特征突出;民歌影响力甚巨;民歌分布地域差异鲜明;形态特征明显、相似度较高，并佐以直观的音乐地图。同时，揭示了地理区位、自然地理、政治历史、现代革命、方言等因素在榆林—忻州民歌核心区形成中的不同作用。     

走自己的路:建党百年中国道路自信的生成逻辑及提升路径

自信是一种信念及精神,中国道路自信是中华儿女对中华民族发展能力及前途的信任,其形成与中国百年发展辉煌成就息息相关.中国道路自信源自中国道路的正确选择.建党百年来,中国共产党带领中华儿女历经千难万险,先后成功开辟新民主主义革命道路、社会主义改造及社会主义建设道路、中国特色社会主义道路.全国人民在百年磨砺中增强了中国道路自信.这种自信承载着中华儿女的无数梦想,是中华民族复兴的软实力.树立中国道路自信的理论前提,关键在于对中国道路优越性的彰显.只有将其置于不同参照系中进行多维度比较,才能使其优越性得以全面彰显,并愈加坚定不移地沿着这条道路阔步前行.显然,站在新时代历史方位上,通过梳理、总结建党百年来中国道路发展历程,将中国道路置于自身与"他者"之历史与现实中,进行共时态与历时态之比较,以唯物史观回望并厘清建党百年来中国道路自信生成逻辑,具有极其重大意义,既能彰显中国特色社会主义道路的优越性,又能激发全体中华儿女愈加自信地"走自己的路"——中国特色社会主义道路,筑牢中华民族共同体意识,阔步迈向全面建设社会主义现代化国家新征程.     

Informal kin caregivers raising children left behind in rural China: Experiences' feelings' and support

The well‐being of children in informal kinship care and their caregivers is a growing concern globally. This study explored the lived experiences of 23 kin caregivers raising children left behind in rural Northeast China while their migrant parents worked and lived in cities. The findings show that the expected authority and responsibility caregivers carry sometimes conflict with their social role of being children's grandparents. Caregivers' feelings about and understandings of these roles are shaped through their social interactions in local communities. In view of their situation and caregivers' self‐conscious attitudes towards utilizing local resources' future formal service provision and social support should take caregivers' viewpoints into account. These views are embedded in and shaped by their rural living context and relationships with community members who influence caregivers' perceptions and child rearing practices.     

身份与利益——东南亚恐怖主义根源探析

恐怖主义是人类社会的灾难,长期对东南亚地区的和平与安全构成重大威胁。防控东南亚恐怖主义的蔓延并进行根治,是东南亚各国政府、域外利益攸关方(stakeholders)、国际组织共同关心的议题。身份-利益这一特质为区分东南亚恐怖主义类型提供了研究方法,也为探寻其不同的根源提供了研究途径。东南亚恐怖主义滋生于身份认同的异质化及自身对特殊政治利益的追求,以身份认同为标准和边界,东南亚恐怖主义可以分为左右翼革命型、民族主义-分裂主义型和宗教-政治型三种类型。东南亚恐怖主义身份认同需要靠利益支持,利益是东南亚恐怖主义身份认同的基础,没有利益支持的身份认同是不稳固的,当身份无法继续提供凝聚力时,东南亚恐怖组织将会走向解体或分裂,其中分裂出的恐怖组织分支会为寻求支持而建构新的身份认同。虽然东南亚恐怖组织存在多元身份认同,但只有其中一种身份在构建恐怖主义时起着决定性的作用。在治理恐怖主义上各国需要采取针对性强的政策,同时需要预防其他身份构建恐怖主义的可能。     

国际海洋法法庭迅速释放问题研究

国际海洋法法庭自成立以来共审理了9个迅速释放案件,其中6个案件判决被告沿海国迅速释放被扣押船只和船员,从而有效地解决了沿海国和船旗国之间的争议。因联合国海洋法公约迅速释放相关规定的模糊性,以及国际海洋法法庭在保证金合理性判断标准和实质性审查问题上所采取的非一致性立场,在迅速释放问题上尚未形成习惯法。应该肯定的是,国际海洋法法庭的司法实践对沿海国相关法律制度的完善起到积极作用。本文认为,为维护我国海洋权利不受非法侵犯,应及时修改和完善我国渔民被外国执法扣押时的国家援助制度,以及解决迅速释放时的保证金制度问题。     

并购、吸收能力与企业创新绩效——基于我国医药上市公司数据的实证分析

本文使用2007-2010年我国医药上市公司企业数据,实证分析了企业并购、吸收能力对企业创新的影响。结果表明:在其他条件不变情况下,企业技术寻求型并购与企业创新绩效呈显著正向关系,这表明我国医药上市公司的并购创新效应显著;企业的技术吸收能力对企业并购的创新效应有正向调节作用;企业技术并购对企业R&D强度有显著正向影响;企业所处地区的市场化程度和产权保护水平对并购后企业的R&D强度有正向促进作用;同时企业并购的R&D强度也受到企业的成长性、资产专有性、企业规模等异质性因素的影响。     

On the Principal Component Liu-type Estimator in Linear Regression

In this article, we present a principal component Liu-type estimator (LTE) by combining the principal component regression (PCR) and LTE to deal with the multicollinearity problem. The superiority of the new estimator over the PCR estimator, the ordinary least squares estimator (OLSE) and the LTE are studied under the mean squared error matrix. The selection of the tuning parameter in the proposed estimator is also discussed. Finally, a numerical example is given to explain our theoretical results.     

Sex differences in the development of mild cognitive impairment and probable Alzheimer’s disease as predicted by hippocampal volume or white matter hyperintensities

This study examined biological sex differences in the development of mild cognitive impairment (MCI) and probable Alzheimer’s disease (AD) development as predicted by changes in the hippocampus or white matter hyperintensities. A secondary data analysis of the National Alzheimer’s Coordinating Center Uniform Data Set was conducted. We selected samples of participants with normal cognition at baseline who progressed to MCI (n = 483) and those who progressed to probable AD (n = 211) to determine if hippocampal volume or white matter hyperintensities (WMH) at baseline predicted progression to probable AD or MCI and whether the rate of progression differed between men and women. The survival analyses indicated that changes in hippocampal volumes affected the progression to probable AD (HR = 0.535, 95% CI [0.300–0.953]) only among women. White men had an increased rate of progression to AD (HR = 4.396, CI [1.012–19.08]; HR = 4.665, 95% CI [1.072–20.29]) compared to men in other race and ethnic groups. Among women, increases in hippocampal volume ratio led to decreased rates of progressing to MCI (HR = 0.386, 95% CI [0.166–0.901]). Increased WMH among men led to faster progression to MCI (HR = 1.048. 95% CI [1.011–1.086]). Women and men who were older at baseline were more likely to progress to MCI. In addition, results from longitudinal analyses showed that women with a higher CDR global score, older age at baseline, or more disinhibition symptoms experienced higher odds of MCI development. Changes in hippocampal volumes affect the progression to or odds of probable AD (and MCI) more so among women than men, while changes in WMH affected the progression to MCI only among men.     

Leader-member exchange as a linking pin in the idiosyncratic deals - Performance relationship in workgroups

In the current investigation, idiosyncratic deals (i-deals; individualized work arrangements) are modeled as differentiated resources that shape leader-member exchange (LMX) relationships in workgroups. We integrate literature on leader-member exchange (LMX) with research on i-deals to argue that employee evaluations of i-deals received from the grantor –typically the leader- enhance employee perceptions of LMX, which in turn become instrumental in generating positive performance outcomes. Furthermore, because workgroup characteristics have potential implications on the relationship between a deal grantor and the deal recipient, drawing upon social identity theory of leadership, we reason that the i-deals-LMX relationship is affected by the overall value congruence among the group members. Cross-level moderated mediation analyses on multi source data obtained from 289 employees nested in 60 workgroups showed that the mediational role of LMX in the i-deals to performance outcomes relationship was weaker in high value congruence groups.     

Multiple event times in the presence of informative censoring: modeling and analysis by copulas

Motivated by a breast cancer research program, this paper is concerned with the joint survivor function of multiple event times when their observations are subject to informative censoring caused by a terminating event. We formulate the correlation of the multiple event times together with the time to the terminating event by an Archimedean copula to account for the informative censoring. Adapting the widely used two-stage procedure under a copula model, we propose an easy-to-implement pseudo-likelihood based procedure for estimating the model parameters. The approach yields a new estimator for the marginal distribution of a single event time with semicompeting-risks data. We conduct both asymptotics and simulation studies to examine the proposed approach in consistency, efficiency, and robustness. Data from the breast cancer program are employed to illustrate this research.