我国货币供应量的域变特征与非线性动态调整

本文使用1996—2013年间M2的月度同比数据,基于马尔柯夫域变模型研究了我国货币供应量变动的持续性、非对称性和非线性动态特征,以及不同域相互转移的路径与内在机理。实证研究表明,我国货币供应量的变动可以划分为"紧缩"和"宽松"两个状态,不同状态划分不仅依赖于供应量的水平值,同时也依赖于其波动性;我国货币供应量处在"宽松"状态的持续时间较长,而处在"紧缩"状态的时间较短;货币供应量系统对冲击的响应不具有持久性,且对正向冲击与负向冲击的响应具有非对称性。     

从企业需求与学生就业角度谈卓越工程师计划培养模式的制定

根据国家培养卓越工程师的要求,分析了企业的需求和学生就业的相关问题,西南林业大学计算机与信息学院制定了"立足本土,面向企业,突出林业"的卓越工程师培养模式。该模式分析了云南本土企业对毕业生能力的需求,同时结合学校的特色,培养网络工程师、Java或.Net三类专业人才。在保证基础理论课程学习的同时,采用"3+1"校企合作的模式,培养学生的实践能力和工程素养,从而满足了企业需求,提升了就业率。     

政府采购公共环境服务研究进展及述评

随着我国经济的高速发展,生态环境持续恶化的现象也日益凸显,原来由政府垄断的公共环境治理领域逐渐向私人资本开放,政府采购公共环境服务模式和内容不断创新,采购规模也日益扩大。学术界对政府采购公共环境服务领域的研究文献逐年增加,研究视角也在不断扩展。文章对政府采购公共环境服务的历史演进过程、政府采购模式创新、政府采购绩效管理和制度建设等方面的文献进行了梳理和归纳,对该领域未来的研究方向进行了分析,以期为政府采购公共环境服务方面的研究提供综述文献。     

世界和中国原油贸易现状及对策建议

2014年,世界石油行业继续保持原油生产西移北美、供应快速增长,炼油及消费东移亚洲、消费增速放缓的态势。供大于求的基本面和强势美元对油价的影响超过了地缘政治和金融投机,导致油价大幅跳水。石油国际贸易格局深化调整,贸易对家的强势地位已经发生反转,由过去的"资源为王"转向"消费主导"。我国原油贸易由注重供应安全转而更加关注价格因素,原油进口来源、贸易方式等逐步多元化,物流设施建设发展迅速。随着中国与世界石油市场联系不断增强,建议:1)抓住"一带一路"战略机遇,发展与石油资源国的合作,持续推进原油进口来源多元化和方式多样化;2)建立多层次、开放的原油交易市场,现货与期货相辅相成,争取更多的定价话语权;3)利用当前低油价形势,加快发展石油储备;4)提高人民币在石油国际结算中的地位,增强风险规避能力;5)建立国家石油产业发展基金,支持中国石油企业"走出去"获取资源和国际市场份额。     

Training and organisational performance: A meta‐analysis of temporal,institutional and organisational context moderators

Drawing on systems theory, we conducted a moderated meta‐analysis of the training and organisational performance relationship using 119 primary studies. We examined the moderating effects of quality versus quantity of training, time, institutional and organisational context factors in the relationship between training and organisational performance. Our findings reveal that training is positively and directly related to organisational performance with no statistically significant difference between measures of training quality and quantity. We found that the relationship was stronger over time and that country performance orientation and country labour cost moderate the training and organisational performance relationship. We found no evidence for the moderating effects of the three organisational context moderators we examined (i.e. industry sector, organisational size and technology intensity). Finally, our results reveal that training type (i.e. general or firm‐specific) does not moderate the training and organisational performance relationship.     

Long‐term economic consequences of corporate environmental responsibility: Evidence from heavily polluting listed companies in China

In this study, we aim to investigate the long‐term economic consequences of corporate environmental responsibility (CER) by companies from the perspective of earnings persistence and investors' response. Based on firm‐level data of 1,010 heavily polluting listed companies in China, the empirical results are as follows. First, the CER of China's heavily polluting listed companies has significantly improved their earnings persistence, that is, earnings quality. Second, the positive long‐term economic effect of CER has been achieved through two paths: improving companies' operational efficiency and reducing their credit costs. Third, CER increases investors' response to heavily polluting companies' accounting earnings. Moreover, state‐owned listed companies achieve more significant positive long‐term economic effects from CER than others. The results suggest that heavily polluting companies should correctly identify the long‐term value of CER rather than pay excessive attention to the impact of CER on their current costs and benefits.     

零工经济时代数字平台控制劳动力的供给行为

本文首先基于委托-代理模型构建了一个数字平台控制劳动力供给的行为经济学模型,从理论上分析了数字平台控制劳动的方式和心理机制;然后建立了一个赫克曼(Heckman)选择模型,利用Uber的大数据实证分析了网约车司机的劳动决策.研究结果表明:(1)在零工具有参考点偏好的前提下,数字平台通过高货币激励或高目标奖励使零工劳动者的参考点具有适应性,进而避免其过早地陷入“收入目标”行为;(2)数字平台利用零工劳动者的厌恶损失偏好,对其实施控制以延长工作时间;(3)网约车司机存在“收入目标”行为,且该行为呈现出动态性的特点;(4)收入激励和“峰时”溢价对网约车司机的工作概率和工作时间具有显著的正影响,且在一天的某个时间段内能够抑制网约车司机的“收入目标”行为.可见,零工经济时代到来,一方面提高了劳动力资源配置效率;另一方面,数字平台通过劳动控制变相延长了零工的劳动时间,加剧了剥削.     

改善优化营商环境的举措、成效与展望——基于世界银行《营商环境报告2020》的分析

市场经济条件下,处理好政府与市场关系、实现政府职能转变,是推进政府治理现代化需要解决的重要问题。近年来,我国十分注重通过优化营商环境推进政府职能转变,优化营商环境建设取得了一些积极成效,营商环境指数国际排名大幅提升,建设项目许可、保护少数投资者等指标大幅改善。依据世界银行《营商环境报告2020》的评价结果,下一步,应强化税务便利化,优化信贷环境,健全破产制度;促进营商环境向法治化、便利化、公平化方向发展,打造国际一流营商环境。     

Does corporate governance still affect firm performance after controlling the distress factor?

We explore the impact of corporate governance on firm performance. We first identify whether corporate governance can still be an influential factor or has been largely captured by the traditional Fama-French three-factor model. More importantly, our study adds a financial distress factor to the Fama-French three-factor model to form a four-factor pricing model (labelled as the ‘financial distress four-factor model’). We find that for the US Russell 1000 firms, the financial distress four-factor model is the better model of the two models considered. We further find that the financial distress four-factor model has a higher explanatory power in capturing the return variation. We find that the differences between the return of firms with good (weak) corporate governance and the expected return are insignificantly different from zero for most portfolios in all the two models. The financial distress four-factor model, however, has the fewer portfolios with return difference being significantly different from zero, implying that corporate governance has been better priced in the financial distress factor.     

人工合成色素与肉制品

在肉制品中,人工合成色素超标、超范围以及违法使用是近年来引发食品安全事件的热点之一,本文从危害、检测标准、监管与消费者教育等方面分析肉制品中的人工色素,以提高人民的健康意识和健康水平。