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50 results on '"Zhai, Mengyu"'

24. Online Facilitation and Motivation in Online MBA Courses

Author

Kim, Kyong-Jee, Lu, Xiaojing, Lee, Seung-hee, Bonk, Curtis J., Magjuka, Richard J., Liu, Shijuan, Zhai, Mengyu, Su, Bude, and Wise, Alyssa

Abstract

Online teaching and learning is making a significant impact on the fabric of higher education. In particular, online MBA programs have seen a rapid rise in student enrollments in recent years while the student enrollments in traditional in-residence MBA programs are in decline (Hayward, 2004; Lorenzo, 2004). This appears to be due, in part, to the convenience and flexibility of the delivery of online education, which enable adults with full-time jobs to attend classes without having to leave their current jobs (Mangan, 2001). Accordingly, many institutions of higher education are offering online programs to serve the growing learner population. Despite such an increase in the popularity of online education, there has been a concern in the quality of online education (Diaz, 2002; Islam, 2002; Moore & Kearsley, 1996). Therefore, institutions of higher education have keen interests in offering quality online MBA programs. Moreover, educators need to be aware that student expectations on the quality of online education programs are rising rapidly (Bonk, 2004).

Published
2004

50. Three-perspective energy-carbon nexus analysis for developing China's policies of CO 2 -emission mitigation.

Author

Zhai M, Huang G, Liu H, Liu L, He C, and Liu Z

Abstract

Energy usage and CO 2 emission have intimate and inseparable linkages. The growth of energy usage causes an increase in CO 2 emissions, which will in turn constrain the related energy policies and challenge the energy-system stability. It is essential to quantify China's CO 2 emission inventories embodied in production-driven, demand-driven and supply-driven chains considering different energy types. A Three-Perspective Energy-Carbon Nexus model is developed to facilitate comprehensive CO 2 emission-reduction analysis in China. The model incorporates environmental input-output analysis and ecological network analysis within a general framework to clarify the relationships among provinces in terms of the production-based, consumption-based and income-based accountings. A new indicator, indirect emission dominant factor, is for the first time examined to evaluate the dominant capabilities of indirect emissions. It is discovered that the emissions triggered by the demand-side are not sensitive to energy types. Furthermore, the changes of integral flow control intensity in each province are insignificant from consumption-based and income-based perspectives. Final demand contributes 80% of consumption-based emissions and gross value-added creation leads to a total of 82% income-based CO 2 emissions in China in 2012. When controlling emissions from multiple perspectives, traditional methods may not be effective since they do not consider the forms of emissions; some methods (e.g., product allocation) are not suitable for suppressing indirect emissions. Moreover, the prosperity of developed regions (e.g. Guangdong) highly rely on support from underdeveloped regions (e.g. Inner Mongolia). Some underdeveloped provinces are receptors of CO 2 , while the developed ones are emitting CO 2 to the system without assuming their emission-reduction responsibilities. In addition, secondary energy consumptions in developed regions are conducive in increasing their emission contributions to the system. In this research, an innovative perspective is initiated to disclose the energy-carbon interconnections across Chinese provinces. The obtained findings could help support the formulation of China's CO 2 emission-reduction policies., (Copyright © 2019. Published by Elsevier B.V.)

Published
2020
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