Environmental uncertainty and environmental management perception: A multiple case study

This paper seeks to answer two questions about environmental uncertainty. (1) How does environmental uncertainty differ across sectors? (2) How can environmental uncertainty impact on managers’ perceptions of the natural environment as a competitive opportunity? The analysis of the nature, sources and extent of environmental uncertainty serves to identify its different components, which fall into two main categories. These categories associate with the information-related environmental uncertainty approach and with the natural resource dependence theory. A multiple case study helps highlight the similarities and differences in the perceptions of environmental uncertainty of the managers of eight Spanish firms belonging to primary, secondary and tertiary sectors. The findings show that environmental uncertainty is inherent in managerial decisions in two ways: in the changes that managers identify in the business environment; and in the changes that the managers themselves produce as a result of the initiatives they undertake in response to the business environment. The paper finishes with some recommendations for managers.     

农村零售商信息资源的开发与利用

农村零售商不仅是面向农村产品的销售末端,更是感知农村市场信息的神经末梢,掌握着最接近真实的农村需求信息。农村零售商信息资源的开发利用,不仅要面对供应链信息共享的一般障碍,还要应对农村地区信息化建设滞后,信息人才缺乏等特殊困难。本文研究了农村零售商信息资源的内容,以及信息资源开发利用的主要障碍与对策。     

粮食物流服务信息集成平台研究

本文围绕粮食物流供应链,通过分析我国粮食物流信息化现状及存在的问题,提出了要基于粮食物流供应链,构建粮食物流服务信息集成平台,该平台包括粮食物流公共信息平台,粮食电子交易平台,粮食物流信息资源集成与数据采集平台3个部分,实现粮食质量检测信息收集及追溯,物流管理、服务与监控等多种功能集成的粮食物流信息处理平台。实现粮食质量快速检测信息收集,可信流通及监控,粮食物流信息管理及服务机制构建。     

订单簿透明度对市场质量影响的实证研究

本文主要以行情揭示三档变五档的透明度变化事件来实证订单簿信息透明度对市场质量和订单行为的影响。结果发现,信息透明度提高之后,市场质量得到改善:一是市场流动性显著提高,二是市场波动性显著降低。其机理是透明度提高吸引了投机性投资者及流动性需求者提交订单,市场流动性得以提高,并降低了市场波动性,但是价格发现效率受到轻微影响。此外,研究还发现:(1)机构投资者下单数量和撤单数量减少,但是订单规模变大,表明其合并了小订单代之以大订单。(2)买单和卖单占比、订单久期、订单不平衡程度没有显著变化,但机构投资者撤单比例降低。     

Monetary Policy Inclinations

We examine whether central banks should complement their inflation forecasts with interest rate projections. Introducing a central bank loss function that accounts for deviations from announcements, we incorporate the publication of policy inclinations into a dynamic monetary model. We show that in the presence of cost‐push shocks, the publication of interest rate forecasts tends to improve welfare.     

Follow the leader: fund managers trading in signal‐strength sequence*

When fund managers trade sequentially in the same direction, the information confirmation hypothesis predicts the long‐term profitability of the leader trade to be increasing in the number of subsequent trades. The information cascade hypothesis predicts a non‐positive relationship. Using active equity funds’ daily trading data, we document a transition from information confirmation to information cascades as the number of followers increase. We find that highly disguised multiple‐broker packages exhibit higher market impact, higher long‐term returns and are associated with fewer followers. Our study also documents that lead fund managers face portfolio risk constraints in trading on private information.     

基于股份减持中的大股东隧道行为实证研究

以2007～2009年被大股东减持的沪深A股上市公司作为样本,运用OLS与Logistic回归方法,实证分析了大股东通过操纵重大信息披露在股份减持过程中的隧道行为。得出了在减持前30个交易日被大股东减持的上市公司有显著的正累计超常收益,但减持后30个交易日则出现显著的负累计超常收益;被大股东减持的上市公司在减持前披露"利好"消息、减持后披露"利空"消息的概率高;民营控股上市公司大股东操纵上市公司信息披露的概率较高;公司估值(托宾值)越高,大股东信息操纵行为的概率也越大;被减持公司的净资产收益率(ROE)与总资产收益率(ROA)对大股东信息操纵行为的概率不存在显著影响等结论。     

增发融资市场运行中的问题及制度完善研究

目前中国增发融资出现了市场融资功能错位、发行监管效率不高、发行折价幅度偏大、内幕交易和利益输送频发以及信息披露不完善等问题。借鉴国外成熟市场制度,从上市审核、发行主体、发行定价、发行对象、流动性限制、信息披露制度等方面完善中国增发融资市场的相关制度,从而提高市场的运行效率。     

金融消费者保护:基于委托代理模型的研究

由于金融产品的无形化、专业化、复杂化等特性,金融消费者在市场交易中处于更弱势的地位,使得金融消费者需获得更强的保护措施.本文从委托代理模型的角度出发,对金融消费者在金融市场的地位进行分析,从理论上对金融消费者权益损害的问题和可提供的保护机制进行研究,从而为金融消费者保护实践提供指导.     

我国生产性服务业发展过程、问题与对策研究

文章以中国改革开放以来生产性服务业、服务业与GDP的发展数据和产业变迁为依托,分析了生产性服务业的规模发展、内部结构变革、固定投资和利用FDI的轨迹及其内在原因。并探讨了改革开放以来金融业、物流业、信息服务业和房地产业发展的现状和主要困境,认为当前我国生产性服务业规模、水平、带动作用相对滞后,而内部结构开始优化。因此本文提出制定大力发展生产性服务业和生产性服务贸易政策、加快城市化重点服务业布局、进行服务业制度创新和业务创新等三项对策,从而加快产业结构升级,构建服务型经济。