Price Effects on Compound Commodities

We examine the effect of simultaneous price changes on the total demand for a group of goods, which we call a compound commodity. Specifically, we consider unit and proportional cost components (e.g., taxes, transportation costs) imposed on compound commodities. If the unit cost is positive, then the proportional cost raises the relative price of the more expensive good, and thus induces substitution towards the less expensive good within this group. Then, the substitution effect of the proportional cost for a compound commodity is non‐negative if and only if the compound commodity and the other goods are, on average, not strongly substitutable.     

To Empower or Not to Empower? Multilevel Effects of Empowering Leadership on Knowledge Hiding

It is widely acknowledged that knowledge hiding persists and has detrimental effects in service organizations. With organizations increasingly becoming team based, understanding the interactions between supervisor and team members especially how team- and individual-level empowering leadership behaviors influence followers’ knowledge hiding is important. Using data on 527 followers from 60 departments in 19 Chinese hotels, the study proposes a multilevel model to examine the manifestation of two types of empowering leadership (individual-focused and differentiated empowering leadership) and the dual-level processes on followers’ knowledge hiding. Results show that differentiated empowering leadership is positively related to followers’ knowledge hiding via group relational conflict, whereas individual-focused empowering leadership is negatively related to followers’ knowledge hiding via their psychological safety. In addition, follower’s psychological safety buffers the positive relationship between group relational conflict and followers’ knowledge hiding. We discuss the implications on both theory and practice of empowering leadership on knowledge hiding.     

非局部群稀疏表示的图像去噪模型

针对图像的非局部稀疏表示忽略图像中结构相似信息的缺点，将群稀疏表示引入到图像的最优滤波中，提出了一种有效去除图像高斯噪声的非局部群稀疏表示模型。该模型首先选择图像非局部相似块构建相似矩阵，在群稀疏限制下对相似矩阵进行正交分解得到正交矩阵；在已知噪声服从高斯分布的情况下，再通过求得的正交矩阵结合贝叶斯最小均方误差准则实现对特征矩阵的最优估计；最后通过正交矩阵与特征矩阵重构去噪后的图像。实验对比证明，所提的非局部群稀疏表示的图像去噪模型在去除噪声的同时更好地保留了图像的结构信息，获得了更好的主客观评价指标，去噪的峰值信噪比提高1 dB以上。     

The puzzle of greenhouse gas footprints of oil abundance

The present inquiry lays a groundwork for the analysis of the net greenhouse gas (GHG) footprint of oil in the oil-abundant settings. To address the research question, the study puts forward a three-sector decision model, which provides a common ground for the assessment of the interaction of the structuralist and institutional factors influencing environmental pollution in the oil-reliant economies. The study shows that fossil-fuel abundance triggers forces, which induce diametrically opposed effects concerning atmospheric pollution. These are the rising carbon-intensive oil extraction and processing and fossil-fueled power generation versus shrinkage of the carbon-intensive manufacturing and growth of the low-carbon tertiarization. The theoretical analysis enables compartmentalization of the essential factors, which determine GHG emissions in the respective countries. To assess the significance of the proposed theoretical framework, the study employs multivariate panel co-integration techniques and two-stage fixed effects estimations for a dataset of 38 oil-producing countries for the time period between 1960 and 2018. In contrast to the existing literature, this study drives apart from the black box approaches that employ just one omnibus variable, per capita income.     

基于模糊多属性群决策的维护方式选择研究

维护方式选择是维护管理中的重要工作之一,合理的维护方式既能达到保障设备的稳定运行,又能同时兼顾其它各个方面的要求。由于对维护方式的评价涉及多个部门、人员和属性,有些指标只是一个模糊的概念,因而采用模糊多属性群决策的方法对维护方式进行优先抉择。本文结合A公司的设备维护方式选择问题,尝试使用模糊多属性群决策折衷算法求解最佳的维护方式。     

Perceptions of the benefits of the A3 planner in facilitating project-based learning in accounting education

This paper evaluates ways of instilling project management skills into accounting-based learning by the use of an iterative A3 planner to plan, monitor and review assignment progress. The application of an A3 planner to facilitate a project-based learning (PBL) group assignment in undergraduate accounting education has been critically evaluated in terms of both the student and tutor experience. The study uses a mix of qualitative and quantitative data. Quantitative data assisting exploration of perceptions were collected through 100 undergraduate students. A series of focus group discussions were carried out to investigate students’ engagement and tutors’ teaching experiences regarding the adoption of the A3 planner. The results suggest that the A3 planner promotes active planning and effective management of a PBL group assignment. It makes students’ thought processes more visible thereby facilitating and enhancing the tutoring/mentoring process. Moreover a more interactive and transparent approach by doing assignment via the use of an iterative A3 planner has ensured more feedback points and action based efficiency in the doing approach for learners.     

Communicating CSR practices – Role of internationalization of emerging market firms

Emerging markets suffer from institutional voids, and in such resource deficient economies, corporate social responsibility is given scant attention. However, when firms from emerging markets globalize, international stakeholders become suspicious about firms’ products, services, and business practices. Grounded in the liability of emergingness and legitimacy theory and using a sample of 134 manufacturing firms from one emerging market, India, this study explores how firms’ international diversification intent and market-seeking motives influence emerging markets’ firms communication of socially responsible activities as an attempt to eliminate illegitimacy. Furthermore, the study reveals that business group affiliation enhances the influence of internationalization on firms’ communication of socially responsible activities.     

Understanding the travel motivation and patterns of international students in Korea: using the theory of travel career pattern

This study examined the travel motivation of international students in Korea using the theory of travel career pattern (TCP). In particular, latent profile analysis (LPA) was applied to identify latent classes within international students. Based on the results, four latent profiles were derived and named “Core,” “Longing,” “Middle,” and “Veteran.” The results described the travel motivation and patterns across these four profiles to enhance the understanding of international students in the context of tourism. There were significant differences in travel patterns (i.e. travel companion and information sources) among the profiles segmented by motivation. This study has expanded travel motivation research by (a) applying TCP to an understudied population (i.e. international students in a non-English-speaking country); (b) comparing travel careers between the home country, Korea (i.e. a study abroad destination), and the third countries; and (c) highlighting LPA as a clustering tool to understand travel motivation.     

重大疫情下高校辅导员开展思想政治工作的五个着力点

新型冠状病毒感染的肺炎疫情防控过程中,高校大学生是一个不容被忽视的群体。抗疫是近期大学生思想政治教育工作的重中之重,事关大学生身心健康成长的根本利益,事关立德树人教育根本任务的实现。     

新形势下高校创新型学生社团建设与创新人才培养

在我国高等学校面对教育新形势的背景下,学生社团的建设与管理要求人们做好教育和引导工作。创新型社团的建设应该因势利导,解决当前面临的问题,与指导教师加强联系,共同制定明确的建设和管理目标,建立合理的管理模式,并创建具有特色的活动与品牌文化。在人才培养方面,应为学生提供更多受教育和实践锻炼的机会,开展学术性交流和培训活动,以培养具有专业素养的创新型人才。