企业农产品电子商务能力测度的实证研究

低水平的农产品电子商务能力阻碍了农产品企业的可持续发展和创新。基于社会物质主义理论,构建企业农产品电子商务能力的模型,讨论农产品电子商务能力的内涵、形成机制和作用效果;并对316份企业样本数据,运用内容分析、问卷调查法和结构方程分析方法对理论模型进行实证检验。结果发现,农产品电子商务能力具有多维度结构,包含管理能力、技术能力和人才能力三个核心维度,且三者相互关联,共同对农产品电子商务能力产生作用。由此开发出量表以期为企业提升农产品电子商务能力提供一个可操作和量化的通用工具。     

环境管制、知识产权保护与区域创新能力——基于我国省际面板数据的实证研究

文章基于政府主导视角,利用2006—2015年我国30个省级面板数据,构建多元回归模型,分析变量之间的关系.其结果显示,环境管制、知识产权保护与区域创新能力之间呈非线性关系,环境管制与知识产权保护同时实施对区域创新能力有显著的促进作用,且具有区域异质性.从企业生存角度出发,提出门槛效应假说,采用Hansen面板门槛回归模型进行检验.结果表明,在环境管制与知识产权保护共同发挥作用时,环境管制必须控制在合理的范围内.最后采用门槛效应回归方法找到了环境管制与知识产权保护对区域创新能力影响的门槛值,并提出相应的政策建议.     

Construction of closed interval for process capability indices Cpu,Cpl, and Spk based on Boole’s inequality and de Morgan’s laws

ABSTRACT

Considerable effort has been spent on the development of confidence intervals for process capability indices (PCIs) based on the sampling distribution of the PCI or the transferred PCI. However, there is still no definitive way to construct a closed interval for a PCI. The aim of this study is to develop closed intervals for the PCIs C_pu, C_pl, and S_pk based on Boole's inequality and de Morgan's laws. The relationships between different sample sizes, the significance levels, and the confidence intervals of the PCIs C_pu, C_pl, and S_pk are investigated. Then, a testing model for interval estimation for the PCIs C_pu, C_pl, and S_pk is built as a powerful tool for measuring the quality performance of a product. Finally, an applied example is given to demonstrate the effectiveness and applicability of the proposed method and the testing model.     

赋权与增能：农民工弱势地位改变的根本途径

农民工①作为一个特殊的群体，为国家和社会的经济发展做出了巨大的贡献，可是他们处于社会的弱势和边缘状态，无法分享经济和社会发展的成果。对此，文章分析了农民工弱势地位的基本表现，农民工弱势地位的产生原因，提出改变农民工弱势地位的途径：赋权和增能。     

重点高校人文社科学报英文编译质量的调查和思考

随机挑选出了国内九所重点高校的人文社科学报开展英文编译质量调查，结果发现这些学报在英文编译方面都存在着不少问题。针对发现的问题，提出了自己的看法。     

A note on the asymptotic distribution of the process capability index C pmk

Process capability indices have been widely used to evaluate the process performance to the continuous improvement of quality and productivity. The distribution of the estimator of the process capability index C _pmk is very complicated and the asymptotic distribution is proposed by Chen and Hsu [The asymptotic distribution of the processes capability index C _pmk , Comm. Statist. Theory Methods 24(5) (1995), pp. 1279–1291]. However, we found a critical error for the asymptotic distribution when the population mean is not equal to the midpoint of the specification limits. In this paper, a correct version of the asymptotic distribution is given. An asymptotic confidence interval of C _pmk by using the correct version of asymptotic distribution is proposed and the lower bound can be used to test if the process is capable. A simulation study of the coverage probability of the proposed confidence interval is shown to be satisfactory. The relation of six sigma technique and the index C _pmk is also discussed in this paper. An asymptotic testing procedure to determine if a process is capable based on the index of C _pmk is also given in this paper.     

Developing social work students’ professional identity: the role of England’s Professional Capabilities Framework

ABSTRACT

Developing professional identity is a key aim of social work education. This paper argues that the Professional Capabilities Framework (PCF) – a holistic, capability approach to student assessment used in England’s social work education programmes – is ideally placed to promote the development of students’ professional identities. The paper discusses two research studies, each of which was stimulated by significant policy changes in England’s social work profession. The author draws out the implications of both studies for supporting social work students to develop their professional identities. It is concluded that the PCF is valued by practice educators as an assessment and teaching tool, while acknowledging that its future is uncertain due to the lack of continuity impacting on England’s social work profession. This paper is equally of relevance for social work educators outside the UK who may be developing and evaluating their assessment approaches and also for those experiencing the impact of rapid policy changes in their own countries.     

Repetitive variable acceptance sampling plan for one-sided specification

In this paper, a variable repetitive group sampling plans based on one-sided process capability indices is proposed to deal with lot sentencing for one-sided specifications. The parameters of the proposed plans are tabulated for some combinations of acceptance quality levels with commonly used producer's risk and consumer's risk. The efficiency of the proposed plan is compared with the Pearn and Wu [Critical acceptance values and sample sizes of a variables sampling plan for very low fraction of defectives. Omega – Int J Manag Sci. 2006;34(1):90–101] plan in terms of sample size and the power curve. One example is given to illustrate the proposed methodology.     

Shared service center research: A review of the past,present, and future

More than 75% of Fortune 500 companies have established models of shared services with the aim of gaining superior performance by cost savings and service enhancements. Despite scholars' complaints about scant shared service center (SSC) research, this study shows that the actual shortcoming in this stream concerns a high fragmentation of the academic literature (e.g., we found 137 works in the initial search and 83 works in a refined screen). In this first comprehensive literature review, we synthesize peer-reviewed articles and classify them into 4 perspectives according to their research questions (i.e., determinant, process, control, and outcome). We identify 17 major research areas across these perspectives. Additionally, we provide information on methodologies and theories. On the basis of the literature synthesis, we discuss opportunities and gaps and propose an agenda for future research. Specifically, we suggest 3 potential research directions (i.e., direct relationships, mediating, and outcome effects) regarding SSCs during their operational maturity phase.