管理层权力制衡强度、债务约束与企业创新投资

企业创新是国家经济可持续增长的关键，受到管理层意愿的影响，因而需要对内部经营者的权力进行制衡。以2010-2018年我国A股上市公司为研究样本，实证检验管理层权力制衡强度对企业创新投资的影响，以及不同债务约束情境下高商业信用配置、高负债水平的调节效应，此外，还考察了产权性质的差异化影响。研究表明，管理层权力制衡强度越大，企业创新投资水平越高；高商业信用强化了该促进作用，而高负债水平弱化了该促进作用。进一步研究发现，管理层权力制衡强度与企业创新投资的关系在民企中更显著；国企能够更好地获得和运用商业信用，使其高商业信用对该关系的强化效应更显著；民企具有更强的债务约束，其高负债水平对该关系的弱化效应更明显。     

优化营商环境,推动发展高质量经济

促进中国经济高质量发展的必由之路是优化营商环境,提升区域竞争力。目前我国面临着国际内外的复杂局势,经济未来的发展趋势不容乐观,为此我们要深入落实新的发展理念,建立新的发展思路,构建新的发展格局。优化营商环境应实现建立服务型政府,实现企业经营环节的全覆盖,降低制度性交易成本、建立完善的商业系统生态链、打造具有中国特色的营商环境。     

Large agricultural investments in Kenya’s Nanyuki Area: Inventory and analysis of business models

Many experts agree that more agricultural investment is needed in the global South to improve local food security and reduce poverty. However, there is a lack of consensus about the types of investment needed to achieve these goals. This paper contributes to the literature on large agricultural investments and corresponding business models by inventorying and analysing such investments in Kenya’s Nanyuki area. We identify four clusters of business models that differ primarily by type of production and other distinct determinants, namely: demand from markets; access to land; land tenure regime and colonial history; actors involved; biophysical context; labour availability; and governance of the value chain via private standards. The study results shed light on the factors that help or hinder implementation of large agricultural investments and shape their impacts in the context of African land use systems. The way land is accessed represents one of the most-decisive factors determining the risks and opportunities associated with such projects. We find that most investments in the Nanyuki area occur on land bought or leased from private owners.     

服务业对外直接投资的出口效应——基于我国微观企业的研究

文章基于我国服务业上市企业数据，采用多维固定效应模型，探讨和分析了我国服务业OFDI对服务贸易出口的影响，经研究发现：第一，服务业OFDI通过吸收东道国先进技术经验提升企业生产率水平和避开东道国服务贸易壁垒降低贸易成本，促进企业服务贸易出口增长；第二，我国服务业OFDI显著提升了企业服务贸易出口的二元边际，具体而言，整体上服务业OFDI会促进服务贸易出口增长4.82%，同时会提升企业的出口概率；第三，我国服务业OFDI"出口效应"存在明显的区域和行业的异质性，具体表现为：生产性服务业和消费性服务业OFDI存在显著的"出口效应"，其OFDI带动服务贸易出口的增长分别为5.68%和3.52%，而公共服务业则不存在显著的"出口效应"；东部地区和中部地区服务业OFDI存在显著的"出口效应"，其OFDI带动区域服务贸易出口的增长分别为4.97%和3.56%，而西部地区则不存在显著的"出口效应"。上述研究结论对化解我国服务贸易出口增长困境和完善服务业对外直接投资政策机制具有一定的启示意义。     

浅谈基于大数据背景下的数字经济发展——以数字电网为例

我们已经进入了一个全新的大数据信息化时代,充满了更多的机遇与挑战。大数据及数字经济的出现极大程度地改变了传统技术及工作思维的方式。数字经济是继工业和农业之后的又一大经济形态,为社会的经济增长提供了新的动力。通过分析电网行业传统的科学技术及作业方式,论文简要阐述了基于大数据信息化发展下电网的影响,并认为信息化技术的发展对于数字经济有着至关重要的影响及重要性。最后论文讨论了数字经济发展存在的问题及方向。     

A truly global crisis? Evidence from contagion dependence across international REIT markets

This study examines the global nature of the recent crisis under bivariate Markov-switching models for pre- and post-crisis periods using the breakpoint of August 9, 2007. It quantifies international synchronization of boom-bust regime switches to investigate contagion-type dynamic comovements of Real Estate Investment Trusts (REITs). Global REIT markets display persistent bust regimes from September 2008 to May 2009, whereas the regime-switching patterns are not significant in the pre-crisis period. The results provide new evidence for global REIT contagion phenomena and suggest greater difficulties in diversifying risks across global REIT markets during the post-crisis period.     

委托理财导致上市公司脱实向虚吗?——基于企业创新的视角

依据2008-2017年上市公司委托理财与专利数据,本文实证研究了委托理财对企业创新的影响。研究发现随着委托理财规模与理财收益对公司业绩贡献的增加,上市公司总体上创新数量变化不明显,但创新质量却显著下降。对于不同的委托理财而言,上市公司购买银行与非银行委托理财对创新质量的影响均为负面,但对创新数量的影响却正好相反。两种类型委托理财对创新数量的影响可能相互抵消,从而导致总体上委托理财对创新数量的影响不显著。进一步研究发现,购买更多的委托理财导致上市公司更加倾向于进行风险低的开发性创新,减少风险高的探索性创新。购买银行理财的上市公司更倾向于机会主义创新,而购买非银行理财的上市公司更可能消极创新。总之,基于企业创新视角的分析发现大规模和投机性的委托理财会干扰上市公司创新行为,导致其经营"脱实向虚"。     

Data vs. information: Using clustering techniques to enhance stock returns forecasting

This paper explores the use of clustering models of stocks to improve both (a) the prediction of stock prices and (b) the returns of trading algorithms.We cluster stocks using k-means and several alternative distance metrics, using as features quarterly financial ratios, prices and daily returns. Then, for each cluster, we train ARIMA and LSTM forecasting models to predict the daily price of each stock in the cluster. Finally, we employ the clustering-empowered forecasting models to analyze the returns of different trading algorithms.We obtain three key results: (i) LSTM models outperform ARIMA and benchmark models, obtaining positive investment returns in several scenarios; (ii) forecasting is improved by using the additional information provided by the clustering methods, therefore selecting relevant data is an important preprocessing task in the forecasting process; (iii) using information from the whole sample of stocks deteriorates the forecasting ability of LSTM models.These results have been validated using data of 240 companies of the Russell 3000 index spanning 2017 to 2022, training and testing with different subperiods.     

企业研发投入、资源特征与创新绩效关系研究

基于资源基础观，探讨了企业“资源池”中财务资源特征与技术资源特征如何与研发投入行为匹配以提升创新绩效，以创业板355家企业为样本开展泊松回归分析，研究发现：R&D投入与创新绩效存在倒U型关系；财务资源特征——资产流动性对R&D投入与创新绩效存在正向调节作用，起着“加速剂”作用；由于组织技术路径依赖，技术资源特征——技术积累程度对R&D投入与创新绩效存在负向调节作用，起着“缓冲剂”作用；资产流动性与技术积累程度提高会促进研发投入与创新绩效关系的阈值提高，促进更多研发投入有效转化。探讨了企业研发投入行为与资源特征的匹配，可为促进创新绩效提升提供理论支撑。     

Evaluating museum visitor experiences based on user-generated travel photos

ABSTRACT

This research introduces online travel photos published on social media platforms as a complementary data resource to examine the behavior and experience of museum visitors. The practical value of online travel photos is demonstrated through a case study of popular Hong Kong museums, particularly by using the photo content and metadata available from the Flickr platform. The proposed approach is a generic method for understanding museum visitor behavior and preferences, and supports museum practitioners in developing improved products for visitors. The case study findings are particularly beneficial for tourism managers, especially those in Hong Kong, in promoting and attracting tourists to visit local museums.