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101.
In a production‐based asset pricing model without adjustment costs and with decreasing returns to scale following Brock (1982), stock returns at the firm level are determined by profitability, the book‐to‐market ratio, and the change in future profitability prospects. Although firms with low book‐to‐market ratios are normally more profitable and profitable firms are predicted to have higher returns, the stylized fact that book‐to‐market ratios positively forecast returns still holds theoretically, but with specific predicted exceptions. These implications are confirmed empirically.  相似文献   
102.
    
There have been studies on land-conflict and its implications through large scale land investments in Ghana and beyond. However, contrary to the negative conflict-implications of land investments, the effectiveness of conflict-reversal interventions has received little attention in academic and policy debates. This has led to a literature gap about land conflict reversal pathways and outcomes. This study thus, uses a case study design based on qualitative methods to introduce two communities of large scale land acquisitions (namely Agogo and Kpachaa) in Ghana where corporate investors took multiple steps to mediate conflicts with the ruralists vis-a-vis the secondary effects aftermath. The study identifies that the implementation of Corporate Social Responsibility (CSR) interventions and benefit sharing mechanisms have had deescalating effects on land conflicts in the communities involved. In the case of Agogo, it was noticed that the conflict reversal pathways were the investor’s decision to change investment from biofuel to food crops, the establishment of formal rent payment system and the running of flexible and rotational job schemes for community members. On the other hand, Kpachaa saw conflict reversal through corporate interventions towards infrastructure development, inputs and technical support, jobs and training programmes and derestricted communal access to unused land spaces and economic trees for local livelihood sustainability. Based on the findings, the study argues that the establishment of land conflict reversal guidelines (in which corporate investors play a key role in tackling conflicts) could help in mitigating land conflicts in Ghana and other countries subjected to large-scale land investments1 .  相似文献   
103.
本文构造出了一类特殊的矩阵,给出了这一类矩阵的三条重要性质,做了巧妙而又简明扼要的证明,指出了它在无输入额定智能网络的稳定性研究以及在HOPF分歧理论中的应用.  相似文献   
104.
Security factors as linear combinations of economic variables   总被引:1,自引:0,他引:1  
A new framework is proposed to find the best linear combinations of economic variables that optimally forecast security factors. In particular, we obtain such combinations from Chen et al. (Journal of Business 59, 383–403, 1986) five economic variables, and obtain a new GMM test for the APT which is more robust than existing tests. In addition, by using Fama and French's (1993) five factors, we test whether fewer factors are sufficient to explain the average returns on 25 stock portfolios formed on size and book-to-market. While inconclusive in-sample, a three-factor model appears to perform better out-of-sample than both four- and five-factor models.  相似文献   
105.
中国2006年颁布的资产减值会计准则对上市公司2006年资产减值计提行为有很大影响,众多上市公司在2006年都大幅度转回以前年度计提的资产减值准备,这说明这种非正常行为普遍存在。研究分析这种非正常行为的公司特征及公司治理因素和这种非正常行为之间存在的相关关系,可以为优化中国国有控股上市公司的产权结构与改善上市公司内部治理提供依据。  相似文献   
106.
媒体作为重要信息中介可被上市公司用以提升其市场价值,但公司是通过何种方式去进行媒体披露管理及其市场效应又如何呢?文章以公司IPO 为样本,关注公司财经公关行为对IPO期间媒体报道以及IPO 绩效的可能影响。实证研究发现:(1)IPO 期间公司会通过财经公关来提高其媒体曝光度,并获得更有利的报道倾向,即存在明显的媒体披露管理倾向。(2)媒体关注度的上升和有利的报道倾向可在短期内助推股价上升;但中长期来看则会导致股价反转,致使公司蒙受更大价值损失。(3)进一步研究发现,公司特征及市场环境对其财经公关行为也有重要影响,即小规模、民营性质和东部发达地区公司的财经公关行为更为明显。  相似文献   
107.
A universal existence theorem is established that yields exhaustive and constraint-free comparative statics information for a general, differentiable optimization problem in the preferred form of a semidefinite matrix. It subsumes all comparative statics formulations of differentiable optimization problems. Its relationship to comparative statics methods extant is establishedWe are grateful to an anonymous referee for a particularly helpful comment on the contents of this paper.  相似文献   
108.
    
In this paper, the distribution of a statistic based on the likelihood ratio method for testing the dimensionality of regression coefficients has been derived. The method of integration over alternate variables has been used to derive the results.  相似文献   
109.
2011年,在全球经济复苏受阻、国际资本流动变异、国内各种刺激政策全面回收、货币政策回调以及房地产调控政策全面加码等多重因素的作用下,中国宏观经济复苏的步伐放缓,呈现出经济增速逐季回落、通胀压力高位回缓、经济泡沫逆转、资源错配加剧、金融风险上扬与结构刚性持续的局面。2012年,中国宏观经济一方面将延续2011年的发展趋势,另一方面也将面临欧洲主权债务危机的深度调整、中国房地产市场的全面逆转以及中国宏观经济政策转向等因素冲击,呈现出前低后稳的发展态势。进而跟进9条政策建议。  相似文献   
110.
沪市A股反转效应与惯性效应实证研究   总被引:3,自引:0,他引:3  
国外证券市场普遍存在反转效应和惯性效应,而国内证券市场是否存在这两种现象目前尚无定论。论文以1994年至2003年期间在上海证券交易所上市的全部A股股票作为研究对象,对反转效应和惯性效应进行了实证检验与研究,得出以下结论:⒈沪市A股市场存在惯性效应,但不明显;⒉沪市A股市场存在反转效应,反转效应明显与否取决于考察期限的长短;⒊惯性效应和反转效应与形成期和持有期的长短密切相关。  相似文献   
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