Bayesian quantile regression and variable selection for partial linear single-index model: Using free knot spline

Partial linear single-index model (PLSIM) has both the flexibility of nonparametric treatment and interpretability of linear term, yet existing literatures about it mainly focused on mean regression, and quantile regression analysis is scarce. Based on free knot spline approximation, we apply asymmetric Laplace distribution to implement Bayesian quantile regression, and perform variable selection in linear term and index vector via binary indicators. Our approach is exempt from regularity conditions in frequentist method, and could execute variable selection and quantile regression under mutual posterior correction, which is also the first work to implement them jointly for PLSIM in fully Bayesian framework. The numerical simulation manifests the superiority of our approach to previous methods, which embodied in better efficiency of variable selection, index vector estimates and link function approximation with different error distributions. For illustration of its application, we build a power consumption model of A₂/O process in wastewater treatment and emphatically analyze the impact of water quality factors.     

EXPOsing Men's Gender Role Attitudes as Porn Superfans

Much contemporary debate about pornography centers on its role in portraying and perpetuating gender inequality. This article compares traditional gendered attitudes between cisgender men attending the Adult Entertainment Expo (n = 294) and a random sample of male respondents from the 2016 General Social Survey (GSS), a U.S. representative survey of general attitudes and beliefs collected every two years (n = 863). Our survey borrowed questions from the GSS to measure attitudes about gender equality across four dimensions: (1) working mothers, (2) women in politics, (3) traditional gender roles in the family, and (4) affirmative action for women in the workplace. Through bivariate analyses, we found that “porn superfans” are no more sexist or misogynistic than the general U.S. public on two of the four measures (women in politics and women in the general workplace) and held more progressive gender‐role attitudes than the general public on the other two measures. We conducted binary logistic regressions for those two measures to determine if the relationship remained significant when controlling for other factors. For one dimension, working mothers, it did (p < .001). Our results call into question some of the claims that porn consumption fosters de facto negative and hostile attitudes toward women.     

不同线上销售模式的产品定价策略研究

现售和预售是线上销售的主要模式。考虑不同模式下消费者对产品估值的差异,分析现售、预售和混合销售（同时开展现售和预售）三种模式下消费者购买决策过程,构建Stackelberg博弈和Nash均衡模型,得到三种模式的产品均衡定价及需求,并探讨开展不同销售模式对应的消费者估值差异阈值以及不同主导结构对供应链企业绩效的影响。结果表明：任意主导结构下,销售模式只会影响现售产品价格,对预售产品定价没有影响;任意销售模式下,制造商主导结构的产品定价和批发价更高,但产品销售量较低;消费者延迟收货敏感度增强使预售模式的供应链成员企业的利润降低,但混合销售模式可以有效防止由此引起的损失,且制造商主导可以同时实现供应链成员企业的利益最大化。     

文化品牌与民族地区文化产业发展

文化品牌既是商品的标志,也是人与人基于商品而构建社会关系的符号表达。需求与消费的意义只有放置在一个社会框架之下才能被理解的事实,使得品牌在赋予品牌消费者社会地位及文化身份的同时也对品牌自身进行了定位。文化品牌的建设是民族地区文化产业发展方式转换的重要基点。民族文化品牌不仅具有保障消费者权益及文化拥有者权力的作用,而且还具有使人类多元文化在全球化背景中并置,并促使不同民族间的社会交往在更加平等的层面上进行的意义。     

学术期刊编辑的出版品牌意识

学术期刊作为传播知识、观点和科研成果的载体,面对激烈的市场竞争和读者、作者需求的深刻变化．需要期刊编辑树立出版品牌意识。从学术期刊质量的影响因素看,期刊编辑必须具备刊名品牌意识、栏目品牌意识、作者品牌意识、编辑品牌意识、装帧、印制、发行品牌意识和创新品牌意识。期刊品牌意识的形成需要持续改进和提高期刊质量、出版精品期刊;需要从期刊策划、强化编辑的主体地位,建立编辑与作者有效沟通渠道,深入调研市场需求研究,把握市场脉络等方面培养期刊编辑的出版品牌意识。     

Are there domino effects between consumers' ordinary and ‘green’ practices? An analysis of quantitative data from a sensitisation campaign on personal carbon footprint

This paper studies how consumers' reported practices related to food, energy use in housing, daily mobility, and tourism are combined and structured. Social practice theories are the main theoretical framework of this research. Data are drawn from a sensitisation campaign run by the WWF-Belgium and the methods developed to attempt to translate the theoretical focus to practices. Results show that both the low number of ‘green’ practices reported and the multiplicity of combinations of practices indicate a rather important compartmentalisation of ‘green’ practices and seem to refute the hypothesis of vast domino effects in these four different areas. In addition, a wider openness to information on environmentally friendlier practices is associated with a larger number of such practices, which raises questions about the design of such campaigns. Finally, there is no conventionalised way of linking practices and commitments taken by the respondents to reduce their environmental impact. A few policy recommendations are derived for sensitisation campaigns that often assume domino effects between ‘green’ practices, and for tools dealing with personal carbon awareness.     

高等教育消费的理论基础

高等教育消费的理论基础有消费者行为理论、人力资本理论和高等教育成本分担理论。高等教育消费是公众的一种消费行为;是一种人力资本投资,使投资者在更大程度上获得经济收益。我国高等学校的收费制度基本上是按院校的人均教育成本及学费在整个教育成本中所占的比重来决定。     

我国居民收入差距与消费需求的关系研究

消费的增长依赖于收入的增长,目前,我国城乡收入差距不断扩大,对消费需求产生了多方面的负面影响,因此,必须采取有效措施缩小城乡收入差距,扩大消费需求,以保持国民经济的持续快速增长。基于我国居民收入差距过大的现实,文章从多角度剖析了我国居民收入差距过大的成因,对我国收入差距过大对居民消费的影响进行了分析,阐述了过大的居民收入差距对居民消费需求扩张的制约机理。在此基础上提出了缩小收入差距,提高居民消费水平的具体对策。     

新媒体格局下纸媒如何重获竞争力

中国加入世界贸易组织之后,中国传媒面临的市场格局已经发生了并将继续发生着重大变动。中资传媒整合、外资传媒入内、新闻竞争浪潮风起云涌,中国传媒正经历着一场深刻的变化。网络普及和使用习惯的相对滞后,以及信息的高度需求使得中国的纸媒发展看起来并非饱和,而是远未发挥出其相应的威力。在全新的媒体格局之下,纸媒作为重要的信息通道必将继续发挥其不可替代的作用。     

黑龙江省品牌经济发展分析

发展品牌经济是提升区域综合经济实力的有效途径。近年来,黑龙江省品牌经济发展取得了较大进展,对区域经济的影响力和带动力也逐步扩大,但仍存在数量不多、价值不高、发展不快、竞争力不强等问题。就黑龙江省而言,其品牌经济发展要重点突出产业和区域特色,着力打造现代农业品牌、新型工业品牌、现代服务品牌、区域城市品牌四大板块等。