作者机构：
[Xiang, Jingjie] Cent China Normal Univ, Sch Econ & Business Adm, Wuhan, Peoples R China.;[Guo, Gangzheng] China Construct Bank, Beijing, Peoples R China.;[Li, Jiaolong] Zhongnan Univ Econ & Law, Sch Stat & Math, Wuhan, Peoples R China.
通讯机构：
[Jiaolong Li] S;School of Statistics and Mathematics, Zhongnan University of Economics and Law, Wuhan, China
摘要：
Purpose
Drawing on the dual-strategies theory of social rank and leader distance theory, this paper aims to investigate the influence of supervisor bottom-line mentality (BLM) on employee knowledge-related behaviors by considering the mediating role of perceived leader prestige or dominance and the moderating role of supervisor–subordinate guanxi (SSG).
Design/methodology/approach
This study collected survey data from 185 research and development employees in East China at three-time points. The authors conducted path analysis and bootstrapping-based analytic approach to test the hypotheses by Mplus7.0.
Findings
The results showed that supervisor BLM has a negative effect on employee knowledge sharing and a positive effect on knowledge hiding. Besides, perceived leader prestige or dominance mediated the relationship between supervisor BLM and employee knowledge hiding. Furthermore, SSG moderated the relationship between supervisor BLM and perceived leader prestige or dominance, as well as the indirect effects of supervisor BLM on knowledge hiding via perceived leader prestige or dominance.
Originality/value
There is limited research on investigating the influence of supervisor BLM in the field of knowledge management. The authors carried out this study to provide evidence of how and when supervisor BLM affects employee knowledge sharing and hiding.
作者机构：
[Shen, Renjun] Cent China Normal Univ, Sch Econ, Business Adm, Wuhan, Peoples R China.;[Shen, Renjun] Cent China Normal Univ, Res Ctr Lowcarbon Econ & Environm Pol, Wuhan, Peoples R China.;[Huang, Shiqian] Peking Univ, Grad Sch Educ, Beijing, Peoples R China.;[Huang, Shiqian] Peking Univ, China Inst Educ Finance Res, Beijing, Peoples R China.;[Yang, Shubin] Univ Westminster, Westminster Business Sch, London, England.
通讯机构：
[Shubin Yang] W;Westminster Business School, University of Westminster, London, UK
关键词：
Industrial redistribution;regional development and climate;population migration;CO2 emissions
期刊：
Environmental Science and Pollution Research,2023年30(19):55187-55199 ISSN：0944-1344
通讯作者：
Wei Wei
作者机构：
[Wang, Zhi; Li, Kangjia; Wei, Wei; Huang, Wenmin] Cent China Normal Univ, Sch Econ & Business Adm, Wuhan 430079, Peoples R China.;[Huang, Wenmin] China Chengtong Holdings Grp Ltd, Beijing 100031, Peoples R China.;[Wei, Wei] Cent China Normal Univ, Ctr Low Carbon Econ & Environm Policy, Wuhan 430079, Peoples R China.;[Liu, Zhen] Nanjing Normal Univ, Sch Business, Nanjing 210023, Peoples R China.
通讯机构：
[Wei, Wei] S;School of Economics and Business Administration, Central China Normal University, Wuhan, 430079, China.;Center for Low Carbon Economy and Environmental Policy, Central China Normal University, Wuhan, 430079, China.
关键词：
High-speed rail;COD emission intensity;Firm heterogeneity;Difference in difference model
期刊：
International Journal of Energy Research,2023年2023 ISSN：0363-907X
作者机构：
[Cheng, Fei] Zhejiang Huayun Informat Technol Co Ltd, Hangzhou, Peoples R China.;[Wei, Cong] Zhejiang Univ Finance & Econ, Sch Econ, Hangzhou, Peoples R China.;[Wei, Cong] Springfield Coll, Springfield, MA USA.;[Tang, Tian; Kong, Jiayang] Cent China Normal Univ, Sch Econ & Business Adm, Wuhan, Peoples R China.;[Tang, Tian; Kong, Jiayang] Cent China Normal Univ, Sch Math & Stat, Wuhan, Peoples R China.
摘要：
In recent years, the Chinese Central Government has put great emphasis on the marine economy, since it has been a new driving force of the national economic development. Yet, the relationship between marine economic development and energy efficiency remains unknown. In this paper, we investigate whether marine economic development affected energy efficiency. We focused on the Zhoushan Archipelago, the first National New Area for marine economic development in China. We applied panel data approach to construct the counterfactual of Zhoushan Archipelago. We compared Zhoushan and its counterfactual, the synthetic Zhoushan, and viewed the difference between them, after the Zhoushan Archipelago New Area, as the impact of marine economic development on energy efficiency. We found that compared with its counterfactual, the real Zhoushan had a more substantial improvement in energy efficiency after the National New Area construction. We estimated that the construction of the National New Area for Marine Economy increased energy efficiency by about 10 percentage points. We also applied the bootstrapping technique to illustrate the significance of the estimated results. The results suggest that the Zhoushan Archipelago New Area construction had a statistically significant impact on energy efficiency. In addition, we conducted two tests, including leave-one-out tests and permutation tests, to check the robustness of estimated results, which also serve as an illustration of significance of the estimated results from an alternative empirical perspective. The results from these two tests are similar to each other, both indicating that the Zhoushan Archipelago New Area construction had a statistically significant positive impact on energy efficiency. Overall, our results suggest that marine economic development had a sizable improvement in energy efficiency.
作者：
Su, Kuangxi;Yao, Yinhong;Zheng, Chengli;Xie, Wenzhao
期刊：
International Review of Economics & Finance,2023年83:35-50 ISSN：1059-0560
通讯作者：
Chengli Zheng
作者机构：
[Zheng, Chengli; Su, Kuangxi] Cent China Normal Univ, Sch Econ & Business Adm, Wuhan, Hubei, Peoples R China.;[Zheng, Chengli; Su, Kuangxi] Cent China Normal Univ, Financial Engn Res Ctr, Wuhan, Hubei, Peoples R China.;[Yao, Yinhong] Capital Univ Econ & Business, Sch Management & Engn, Beijing, Peoples R China.;[Xie, Wenzhao] Changjiang Secur Co Ltd, Wuhan, Hubei, Peoples R China.
通讯机构：
[Chengli Zheng] S;School of Economics and Business Administration, Central China Normal University, China<&wdkj&>Financial Engineering Research Center, Central China Normal University, China
摘要：
Effective and robust crude oil hedging strategies are becoming increasingly important for investors. However, due to the differences between data characteristics, the choice of model usually has a significant impact on hedging performance, and an incorrect model can make the hedging performance less efficient and robust. In this paper, a novel hybrid hedging model is proposed to reduce the model uncertainty. In detail, different hedging models are combined to construct a hybrid. Then, the maximum percentage reduction of the hybrid is selected as the optimization target to derive optimal hedge ratios and combination weights. The essence of the hybrid hedging model is to choose a better one among different strategies. In the empirical analysis, we construct the hybrid model by combining three single models: parametric, nonparametric, and semiparametric minimum-CVaR hedging models. The empirical results show that the novel hybrid model significantly outperforms other four competitive models in return, Sharpe ratio, maximum drawdown and downside volatility, while slightly outperforms other competitors in CVaR reduction. The robustness tests by changing the window width, confidence level, data frequency, empirical data, and objective function to be optimized validate the above conclusions.
