西方后现代主义音乐思潮的解析

后现代主义作为当下最为前卫的文化思潮,它对包括音乐、文学等众多艺术形式以及哲学观念都有着极为重要的影响。文章以音乐艺术为对象,从对后现代主义的概念和特征的梳理中来探讨当今音乐创作观念及审美等方面表现出的种种后现代主义特征。     

索赔次数的开放式混合泊松分布研究

本文建立了索赔次数的多风险类别混合泊松模型。首先,考虑索赔次数的零膨胀、厚尾性和异质性等特征,建立风险类别待定的开放式混合泊松模型,开放式结构使该模型对实际数据的多样特征和风险类别具有良好的自适应性;其次,定义混合权重参数的iSCAD惩罚函数,实现对权重参数的筛选;最后,借助EM算法求得模型参数,实现对各风险类别下索赔次数的估计。借助iSCAD惩罚函数,给出最优混合数,避免传统混合模型中主观选择的弊端,克服传统混合模型中结构复杂、参数估计没有显式表达式、估计结果不便于解释等问题。基于三组风险特征多样数据的实证分析,本文发现该模型可以显著改进现有模型的拟合效果。     

数学在经济学研究中的角色: 基于金融危机视角的思考

目前学术界在处理经济学和数学之间的关系方面存在一些偏向,必须辩证地看待经济学与数学之间的关系.经济学研究需要数学的帮助,运用数学推理解决经济学问题具有文字逻辑无法比拟的一些优点.不过,数学只是体现和执行经济思想、帮助理解和分析的工具,而非目的,不加限制地将经济学"数学化"会损害经济思想.因此,对数学工具的运用要从经济思想表达的需要出发,服务于经济学研究,而不能代替经济学.     

Personal Values as Mitigating Factors in the Link Between Income and Life Satisfaction: Evidence from the European Social Survey

Using data from the first two rounds of the European Social Survey, we examine the link between income, reference income and life satisfaction across Western Europe. We find that whilst there is a strong positive relationship between income and life satisfaction, reference or comparison income exerts a strong negative influence. Interestingly, our results confirm the importance of personal values and beliefs not only as predictors of subjective well-being, but also as mitigating factors in the relationship between income, reference income and life satisfaction. While our findings provide additional empirical support for the relative utility hypothesis, they are also consistent with Rojas’ (J Econ Psychol 28:1–14, 2007) Conceptual-Referent-Theory (CRT), which is based on the premise that the salience of income and comparison income depends on one’s intrinsic values and personal beliefs.

Determinants of public attitude towards a social enterprise crisis in the digital era: Lessons learnt from THINX

This study examines how the perceived locus of crisis cause, controllability, and adherence to social mission are associated with public attitude in the context of a social enterprise crisis and evaluates the differences between these variables under episodic and thematic frames of online articles. Using the crisis case of THINX in 2017 as a case study, a quantitative content analysis was performed on a sample of 503 comments under online articles. Hierarchical regression revealed that the locus of crisis cause and adherence to social mission were associated with public attitude, whereas controllability was not associated with public attitude when adherence to social mission was accounted for. Significant differences were found in the locus of crisis cause, controllability, adherence to social mission, and public attitude between episodic and thematic frames. This study provided a basis for the theoretical development of crisis communication in a social enterprise and the corresponding role for public relations.     

A clarifying comparison of methods for controlling the false discovery rate

Traditional multiple hypothesis testing procedures fix an error rate and determine the corresponding rejection region. In 2002 Storey proposed a fixed rejection region procedure and showed numerically that it can gain more power than the fixed error rate procedure of Benjamini and Hochberg while controlling the same false discovery rate (FDR). In this paper it is proved that when the number of alternatives is small compared to the total number of hypotheses, Storey's method can be less powerful than that of Benjamini and Hochberg. Moreover, the two procedures are compared by setting them to produce the same FDR. The difference in power between Storey's procedure and that of Benjamini and Hochberg is near zero when the distance between the null and alternative distributions is large, but Benjamini and Hochberg's procedure becomes more powerful as the distance decreases. It is shown that modifying the Benjamini and Hochberg procedure to incorporate an estimate of the proportion of true null hypotheses as proposed by Black gives a procedure with superior power.     

正视基本国情 重视老年体育

21世纪,人口老龄化将成为中国的基本国情,这不仅会影响到目前还健在的每一位中国人,而且会影响到目前尚未出生的若干代中国人。针对老年体育存在的诸多难题,应加强老年体育工作的研究,狠抓老年体育,以体现体育在人的生命过程中的作用和价值,使老年人健康长寿,提高生活质量。     

空间结构演化与长江三角洲先进制造业新一轮技术创新的联动战略

本文运用空间经济学的技术扩散理论,对长江三角洲内部具有高度技术联系和地理上又紧密相邻的沪苏锡先进制造业的产值、资产、利润、技术开发经费和开发人员等指标作了一次细致的研究。几乎所有的统计数据表明,未来数年,沪苏锡先进制造业的发展重点将从"资本深化"向"技术深化"转型,预示着制造业结构一场重大变动阶段的到来。区域内部技术资源的高度集聚性和空间毗邻性意味着可供利用的创新资源存量正在超速增长,采取鼓励增加技术投资以及推动知识和技术等生产要素在区域内部和区域之间自由流动的政策是一定能够提高先进制造业的技术创新率,并且可以将新的技术创新成果扩散到更广阔的区域,获取更大的技术创新效益和促进更快的工业结构升级。     

新生代农民工群体特征研究

自2010年中央一号文件首次提出“新生代农民工”说法,新生代农民工开始成为社会各界关注的对象,通过梳理相关文献大致可勾画出新生代农民工所谓“四高”、“一低”、“一薄弱”的社会印象和群体特征。相对其他群体来说,新生代农民工受教育水平并不高,对于农民身份认同相对减弱,城市社区认同较高。对于新生代农民工群体特征的研究应该区分农民工的人口学特征与社会特征,并充分认识到新生代农民工群体的异质性,对其定义和特征把握要注意从与周围群体和代际关系中共同考虑。