Bayesian t-tests for correlations and partial correlations

In this paper, we develop Bayes factor based testing procedures for the presence of a correlation or a partial correlation. The proposed Bayesian tests are obtained by restricting the class of the alternative hypotheses to maximize the probability of rejecting the null hypothesis when the Bayes factor is larger than a specified threshold. It turns out that they depend simply on the frequentist t-statistics with the associated critical values and can thus be easily calculated by using a spreadsheet in Excel and in fact by just adding one more step after one has performed the frequentist correlation tests. In addition, they are able to yield an identical decision with the frequentist paradigm, provided that the evidence threshold of the Bayesian tests is determined by the significance level of the frequentist paradigm. We illustrate the performance of the proposed procedures through simulated and real-data examples.     

校园环境设计的实施策略--以广州市真光中学为例

环境设计的实质是反映人们的生活方式和审美追求,也是社会文化的创造。优美和谐的校园环境是一所学校良好的校团文化和精神文明的一个重要标志。校园环境设计必须从学校的文化背景入手,对学校进行全方位考察,并且让师生共同参与。让文化弥散到每一个角落且突出个性,以强化校园环境的整体风格。     

儿童如何参与研究：基于照片引谈法的解读

照片引谈法是一种基于艺术的研究方法。用于儿童研究能为儿童赋权增能,支持儿童借助视觉表达自身的真实生活样态,进行自我的知识建构,也能获取更多、有更好信度与效度的研究数据。儿童研究中的照片引谈法程序包括确定研究主题和目标、邀请儿童参与、选择摄影工具、明确拍摄要求、整理照片、正式引谈、分析资料形成结论七个步骤,对儿童与成人的权力反思贯穿于全过程。未来使儿童成为积极的研究参与者需要关注方法论层面的思考,增强对研究伦理的观照,融合多学科领域的理念和方法,增强包容性。     

农村生产性公共产品供应机制的思考--对鱼米之乡常德市的个案研究

“鱼米之乡”常德市的实证表明,农村生产性公共产品供应短缺状况严重。实际需求与有限财力、集权财政与地方主义、政府热心与民间冷漠的矛盾是其主因。改善农村生产性公共产品供应,帮助农村、农民彻底摆脱贫困的出路在于:加大国家投入力度,开征农村建设维护费;对生产性公共产品实行分类分级管理和市场化营运;增强农民的社会公共意识和土地主人意识。     

Life Satisfaction of Rural Migrant Workers in Urban China: The Roles of Community Service Participation and Identity Integration

Abstract

China is home to approximately 245 million rural-to-urban migrant workers. The influx of migrants into urban areas has posed various challenges for local social service systems. Recently, increasing number of community services have been developed to meet the growing service demands from the migrant population. However, whether increase in community service use results in improved wellbeing among migrant workers remains critically unexplored. As such, this study examines the role of community service use in migrant workers’ life satisfaction and the potential mediating effect of identity integration in Shenzhen, China. Bootstrapped models were adopted to examine relationship among variables. Drawing from a sample of 1,087 rural-to-urban migrant workers, we found that community service use is positively correlated with both identity integration and migrant workers’ life satisfaction. Moreover, identity integration served as a partial mediator between community service use and life satisfaction. The mediating effect of identity integration was found to increase with age. This study highlights that diverse services should be implemented to address divergent needs of migrants in different age groups. Community service can also serve as a vehicle to foster integration among migrant workers in host communities, especially for older age groups. Future studies may further investigate the relationships between community social capital, community social support, quality of community-based organization and frequency of service use so as to optimize the life satisfaction of migrant workers.     

凝固型大米风味酸奶的研制

用大米蛋白或大米蛋白水解物部分替代牛乳粉生产大米风味酸奶,以谷糠乳杆菌和乳酸乳球菌乳酸亚种为发酵菌种,以酸度和感官为评价指标,通过大米蛋白及其水解物添加量、大米蛋白水解度、乳糖补加及蔗糖添加研究对大米风味酸奶酸度和感官的影响。结果表明,大米风味酸奶的酸度和感官评分随大米蛋白添加量的增加而降低。产品酸度随大米蛋白水解度增加而增大,大米蛋白水解度为7.5%时感官得分最高;产品酸度和感官评分随大米水解物添加量增加而降低,大米蛋白水解物添加量在40%以下时,均可生产出合格的大米风味酸奶。补加乳糖对产品酸度和感官无显著影响。添加蔗糖对产品酸度无显著影响,但对产品感官影响显著,蔗糖添加量在4~6%时,大米风味酸奶的感官得分最高,表现为色泽均匀,质地较细腻,未见乳清析出,凝乳稳定,口感较细腻柔滑,酸甜度适中,米香风味浓郁。     

A qualitative case study of a Korean former addict’s existential self‐interpretation and identity transformation

This study explored the case of a former addict, focusing on his existential self‐interpretation and identity transformation process. This study began from the question of whether philosophical processes related to existential self‐interpretation could lead to the formation of the concept of bottoming out and of identity transformation. To answer this question, the study analyzed the case of a male in his mid‐forties who was addicted to drugs for approximately 30 years and has only recently maintained abstinence. The study used the phenomenological approach to determine the meaning drugs held for him in each stage, and what drug‐related identity he had in each stage. Further, this study identified the integrative implications of these meanings in terms of existential self‐interpretation and identity transformation. The four different identities the man identified for the four stages of his life were juvenile delinquent, gang member, half‐gangster, and breadwinner, and the associated meanings drugs had for him during each period were “glue,” “filthy,” “leeches,” and “abstinence,” respectively. Finally, this study elucidated the integration of these meanings through the hermeneutic circle, identified the social welfare implications of the findings, and developed educational recommendations.     

我国构建数字经济税收法律制度的现时难题和优化路径

传统税收法律制度在对数字经济企业实施税收征管时存在征管依据缺失、征管技术落后等不足,进而诱发税基侵蚀和利润转移问题,导致无法对数字经济进行充分有效的征管。各国对数字经济的利益诉求不同,使得在国际层面具备广泛共识的数字税方案难以达成。从国内层面来看,我国对于数字经济的税收征管仍旧依靠传统税收模式进行,并未将数字税作为独立税种在法律上予以确认。这种税收模式在数字经济持续发展的当下已经无法满足数字经济税收征管的现实需要。对于当前中国构建数字经济税收法律制度的路径,可以通过升级数字税收监管技术、发挥数字经济平台的监管作用和加强国际税收合作等手段进行优化,并积极参与和推进具有广泛共识的国际数字税收法律规则的制订。     

Noninformative priors for the between-group variance in the unbalanced one-way random effects model with heterogeneous error variances

For the unbalanced one-way random effects model with heterogeneous error variances, we propose the non-informative priors for the between-group variance and develop the first- and second-order matching priors. It turns out that the second-order matching priors do not exist and the reference prior and Jeffreys prior do not satisfy a first-order matching criterion. We also show that the first-order matching prior meets the frequentist target coverage probabilities much better than the Jeffreys prior and reference prior through simulation study, and the Bayesian credible intervals based on the matching prior and reference prior give shorter intervals than the existing confidence intervals by examples.