Comparison of dimension reduction methods for DEA under big data via Monte Carlo simulation

Data with large dimensions will bring various problems to the application of data envelopment analysis (DEA). In this study, we focus on a “big data” problem related to the considerably large dimensions of the input-output data. The four most widely used approaches to guide dimension reduction in DEA are compared via Monte Carlo simulation, including principal component analysis (PCA-DEA), which is based on the idea of aggregating input and output, efficiency contribution measurement (ECM), average efficiency measure (AEC), and regression-based detection (RB), which is based on the idea of variable selection. We compare the performance of these methods under different scenarios and a brand-new comparison benchmark for the simulation test. In addition, we discuss the effect of initial variable selection in RB for the first time. Based on the results, we offer guidelines that are more reliable on how to choose an appropriate method.     

广义服务质量的基本内涵和评价思路探析

文章拓展了顾客感知服务质量的概念,明晰了广义服务质量的内涵要素,分析了广义服务质量的基本内涵,初步构建了广义服务质量的评价思路框架。     

工程伦理视角下的建筑工程困境研究与对策

在我国工程建设中,由工程伦理所引发的工程问题,已经威胁到了社会稳定和人民群众安全。在推动工程建设健康发展的问题上,工程伦理提供了新的视角和途径。基于工程伦理内涵,通过工程伦理三重维度来分析工程建设健康发展困境以及探究工程伦理实践化的路径,以图有效改善建筑工程安全生态环境,逐步体现公正和谐的工程伦理精神。     

房地产开发企业动态能力的维度结构与实证研究

在已有研究基础上,提出房地产开发企业动态能力的概念内涵和三维度结构模型,通过探索性因子分析和验证性因子分析,对其维度结构进行提炼和验证。实证分析表明,房地产开发企业动态能力包含组织学习、整合重构、组织变革三大维度,且维度结构具有较好的可靠性和有效性,从而为国内“新常态”下房地产开发企业动态能力的培育和提升奠定基础。     

Does nutrition information on food products lead to healthier food choices?

This paper examines the link between nutrition label use and consumers’ healthier food choices. Label use is considered for the two main types of labels currently found on food products; nutrition facts panels and nutrition/health claims. This link is tested using a three-equation multivariate probit model. Data were obtained from an ad hoc survey conducted in two medium-sized Spanish cities. The results indicate that the use of nutrition information by consumers, whether this involves the fact panel or the claim labels, does influence consumer choice of healthier food products to the same extent, although different types of consumers use the various types of labels considered.     

Why do not you read the label? – an integrated framework of consumer label information search

This article facilitates deeper insight into label‐related consumer information acquisition behaviour. An integrated framework of label information search (LIS) has been developed based on a synthesis of related literature and explorative research conducted by analysing online discussions among customers (netnography). The framework focuses on three main groups of personal factors that serve as antecedents of LIS: general personal factors (e.g. health consciousness and socio‐demographics), label‐related personal factors (e.g. label‐related self‐efficacy, trust in labels and the perceived usefulness of labels) and product category‐related personal factors (trust in food products, enduring involvement, experience and perceived quality differences). Important characteristics of the framework are its process‐oriented nature and the dynamically changing relationships among its concepts. LIS is an antecedent to and a consequence of influencing factors. This article offers managerial implications and serves to incite future inquiry in this field.     

企业知识员工可雇佣型建言维度构建的探索性研究

探索企业知识员工可雇佣型建言的维度结构,对拓展相关理论和指导管理实践都十分有益。采用质性研究方法,通过内容分析和聚类分析的途径,对知识员工可雇佣型建言的维度结构进行了探索性研究,认为其包括基于职业发展的建言、基于知识与技能增长的建言、基于物质获利的建言、基于亲和与支持的建言四个构面,归纳出知识员工可雇佣型建言是知识员工为提升其可雇佣性而主动表达与工作相关的建设性言语行为,并基于由可雇佣型建言动机之程度“强—弱”、个人可雇佣性提升之“充分—必要条件”搭建的二维坐标系,探析了知识员工可雇佣型建言分类模型。最后,提出了干预和管理此建言行为的管理启示及未来的研究方向。     

瓦楞纸箱的尺寸比与抗压强度关系的研究

在瓦楞纸箱的周长、材料、瓦楞结构确定的情况下,文章研究了瓦楞纸箱的尺寸比与抗压强度的关系,结果表明瓦楞纸箱的长、宽、高尺寸比的变化对其抗压强度有显著影响。     

从WTO规则角度探讨我国环境标志制度的完善

环境标志制度已经成为国际贸易中越来越重要的一项制度,环境标志通过利用公众对环保产品的选择,逆向引导企业参与环保,具有良好的环保效果。我国已建立了环境标志制度,但有待完善。我国应结合WTO规则,提高国民的环保意识;建立环境标志体系,完善环境标志制度;积极参加CTE关于环境标志问题的讨论,维护发展中国家和我国的贸易利益,才能使我国的环境标志制度与国际市场全面接轨。     

普遍经济学何以“普遍”——兼论巴塔耶经济哲学思想的批判性与合理性维度

巴塔耶的普遍经济学完成了四个转换:从物质财富到生命能量,从局部视角到整体视角,从匮乏预设到过剩事实,从普遍经济到普遍历史。巴塔耶的这一经济哲学思想,同时包含着批判性维度与合理性维度,前者体现在对传统西方经济理论和资本主义经济制度的批判上;后者则蕴含在普遍经济学的理论建构中,而这既造成了其自身的理论缺陷,又在社会经济发展方面提供了若干务实的启发。