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41.
Francesco S. Braga 《Revue canadienne d'agroeconomie》1990,38(3):421-438
The academic literature on the determination of risk-minimizing hedge ratios has apparently ignored the potential impact that the pricing strategies adopted by the grain elevators may have on the futures-cash price transmission, and therefore on the determination of the correct hedge ratio. This paper addresses this problem from a theoretical perspective, and then develops a model that is applied to the soybean market in Chatham, Ontario.
La littérature académique concernant la détermination des ratios de couverture à terme minimisant le risque a apparemment ignoré l'impact potential des stratégies des faiseurs de prix sur un marché sur la relation entre les prix spot et les prix à terme. II est possible que de ce fait ces stratégies influencent également la détermination du vrai ratio de couverture. Ce papier traite ce problème d'un point de vue théorique, puis vérifie ces résultats en les appliquant au cas du marché du soja à Chatham, Ontario. 相似文献
La littérature académique concernant la détermination des ratios de couverture à terme minimisant le risque a apparemment ignoré l'impact potential des stratégies des faiseurs de prix sur un marché sur la relation entre les prix spot et les prix à terme. II est possible que de ce fait ces stratégies influencent également la détermination du vrai ratio de couverture. Ce papier traite ce problème d'un point de vue théorique, puis vérifie ces résultats en les appliquant au cas du marché du soja à Chatham, Ontario. 相似文献
42.
Disclosure as a tool in stakeholder relations management: a longitudinal study on the Port of Rotterdam 总被引:1,自引:0,他引:1
Theo Notteboom Francesco Parola Lara Penco 《International Journal of Logistics Research and Applications》2015,18(3):228-250
This study applies stakeholder management principles to the port domain. We provide a conceptual framework for evaluating the communication strategies a (landlord) Port Authority (PA) relies on in the management of its relevant stakeholders and the adoption of disclosure to critical issues. The theoretical arguments are supported by empirical evidences from the Port of Rotterdam (PoR), i.e. a major port which leverages disclosure to successfully manage stakeholders and support the implementation of corporate strategy. The research questions are addressed using a content analysis on the annual reports (ARs) of PoR in the period 2000–2012. The overall research design enables the investigation of PA disclosure as a tool for managing the evolving interests of stakeholders from a longitudinal perspective. The PoR case shows that the relative importance of topics reported in the ARs change over time, as a result of external pressures and internal key events. The outcomes demonstrate the growing attention of PoR on topics relevant to the broader community (e.g. environment and safety/security) after a period characterised by a prominent focus on financial and governance issues. Besides, key breakthrough forces stimulating the shifts in landlord communication strategies are identified and discussed. Finally, by suggesting an indirect approach to evaluate how PA prioritises its salient stakeholders, the paper adds to extant port literature and brings methodological implications. 相似文献
43.
Recent literature on panel data emphasizes the importance of accounting for time-varying unobservable individual effects, which may stem from either omitted individual characteristics or macro-level shocks that affect each individual unit differently. In this paper, we propose a simple specification test of the null hypothesis that the individual effects are time-invariant against the alternative that they are time-varying. Our test is an application of Hausman (1978) testing procedure and can be used for any generalized linear model for panel data that admits a sufficient statistic for the individual effect. This is a wide class of models which includes the Gaussian linear model and a variety of nonlinear models typically employed for discrete or categorical outcomes. The basic idea of the test is to compare two alternative estimators of the model parameters based on two different formulations of the conditional maximum likelihood method. Our approach does not require assumptions on the distribution of unobserved heterogeneity, nor it requires the latter to be independent of the regressors in the model. We investigate the finite sample properties of the test through a set of Monte Carlo experiments. Our results show that the test performs well, with small size distortions and good power properties. We use a health economics example based on data from the Health and Retirement Study to illustrate the proposed test. 相似文献
44.
Francesco Perrini 《Journal of Business Ethics》2006,69(3):305-316
This paper reviews the development of socially responsible investment (SRI) in the Spanish financial market. The year, 1997 saw the appearance in Spain of the first SRI mutual fund, but it was not until late 1999, that major Spanish fund managers offered SRI mutual funds on the retail market. The development of SRI in the Spanish financial market has not experienced the high levels of development seen in other European countries, such as France or Italy, where interest in SRI began during the same period. This paper presents an analysis of the impact of SRI mutual funds managed by Spanish fund managers comparing the evolution of managed assets and number of investors. We also analyse the investment strategies adopted by these funds, which mainly use negative screening criteria and the participation of non-governmental organisations as institutional investors. An analysis of the take up of socially responsible investment in the Spanish financial market shows majors deficits in this process. This is due to Spanish investors having limited sensitivity to social issues and knowledge of SRI, and a lack of development of SRI investment strategies, such as engagement or shareholder activism by fund managers. Furthermore, the take-up of SRI mutual funds in the Spanish financial market coincided with a fall in the stock market at the beginning of the 21st Century. We conclude with an analysis of the relationship between SRI and Corporate Social Responsibility (CSR).Josep M. Lozano is currently Professor in the Department of Social Sciences at ESADE, Universidad Ramon Llul-URL and Director of the school’s Institute for the Individual, Corporations and Society (IPES). Co-founder of ética, Economía y Dirección (Spanish branch of the European Business Ethics Network), member of the international Editorial Board of ‚Ethical Perspectives’ and member of the Business Ethics inter-faculty group of the Community of European Management Schools (CEMS). He has been a highly-commended runner-up in the European division of the Beyond Grey Pinstripes Faculty Pioneer Award. Author of Ethics and Organizations. Understanding Business Ethics as a Learning Process. Dordrecht: Kluwer, 2000.Laura Albareda is a Researcher at the Institute for the Individual, Corporations and Society (IPES), ESADE, Universidad Ramon Llull-URL. She is manager of the Observatory on Ethical, Ecological and Social Investment funds in Spain, an annual IPES publication on Socially Responsible Investment in Spain. Fields of research and academic interest are Corporate Social Responsibility, Business Ethics, Global Governance, Governments and Public Policies on CSR and Socially Responsible Investment.M. Rosario Balaguer is a Lecturer in the Department of Finance and Accounting at Universitat Jaume I. Research areas focus on finance-based analysis of Corporate Social Responsibility and Socially Responsible Investment, covering issues such as profitability, risk and performance. She has taken part in several national and international conferences and published a number of articles in this field. 相似文献
45.
Verti-zontal differentiation in export markets 总被引:1,自引:0,他引:1
Francesco Di Comite Jacques-François Thisse Hylke Vandenbussche 《Journal of International Economics》2014
Many trade models of monopolistic competition identify cost efficiency as the main determinant of firm performance in export markets. To date, the analysis of demand factors has received much less attention. We propose a new model where consumer preferences are asymmetric across varieties and heterogeneous across countries. The model generates new predictions and allows for an identification of horizontal differentiation (taste) clearly distinguished from vertical differentiation (quality). Data patterns observed in Belgian firm–product level exports by destination are congruent with the predictions and seem to warrant a richer modelling of consumer demand. 相似文献
46.
It is recognized that public health intervention targeted toward changing lifestyle behaviors to reduce overweight status is a considerable challenge. It is important that individuals recognize their overweight status as a health risk in order for an effective change in lifestyle behaviors to occur, and growing evidence suggests that actual weight and perception of weight status often do not match, especially among adolescents. In this article, we explore the extent to which exposure to heavier peers and parents affects misperception of their own weight status by adolescents. Using data from a nationally representative sample of adolescents, we estimated instrumental variable models with school‐level fixed effects to account for bidirectionality of peer influence and environmental confounders. Our results indicate that individuals who live in an environment that exposes them to overweight/obese parents and heavier peers tend to misperceive their weight status and think of themselves to be of lower weight than they actually are. Our analysis also revealed differential effects by gender and type of peers. 相似文献
47.
Cristiano Antonelli Francesco Crespi Giuseppe Scellato 《Structural Change and Economic Dynamics》2012,23(4):341-353
This paper contributes the analysis of the persistence of innovation activities, as measured by different innovation indicators and explores its past and path dependent characteristics. The study provides new insights on the role of R&D investments in innovation persistence and analyses differentiated patterns of persistence across product and process innovation, by accounting for complementarity effects between the two types of innovative behaviour. The empirical analysis is based on a sample of 451 Italian manufacturing companies observed during the years 1998–2006. Results highlight the relevance of innovation persistence. The highest level of persistence is found for R&D-based innovation activities, witnessing the actual presence of significant entry and exit barriers. Moreover, we obtain more robust evidence of persistence for product innovation than for process innovation when complementarity effects between the two types of innovation are accounted for. 相似文献
48.
Agriculture is a significant component of the Central Asian economies. Since independence, the republics have implemented agricultural reforms in varying measure, yet production has fallen sharply across the region. The more ambitious agricultural reform programs have included measures aimed at liberalizing agricultural marketing, trade and prices. However, so far the expected supply response has yet to emerge. The objective of this paper is to highlight key policy and research issues surrounding reform of agricultural markets. It summarizes the main features of agricultural performance since the reforms, highlighting trends in grain and cotton, livestock, input use, and trade and analyzes key constraints to improvement of the sector, emphasizing price policy, sequencing problems, and institutional weakness. It presents a research agenda by identifying the main research needs for better agricultural policy design. It calls for more research on input and output market efficiency, private sector development, the effects of reform on farmers, sequencing issues, comparative advantage, water management, land tenure and farm size. 相似文献
49.
Francesco Zanetti 《Journal of Macroeconomics》2012,34(1):87-94
This paper enriches a standard New Keynesian model with a simple banking sector to investigate the role of money in the business cycle. Maximum likelihood estimation of the model suggests that money balances play a significant role in explaining the intertemporal allocation of consumption and the dynamics of inflation as described by the forward-looking IS and Phillips curves. Nonetheless, the responses of the model’s variables to shocks remain qualitatively similar to a model without money, suggesting that the omission of money balances leaves the model’s transmission mechanism unaffected. 相似文献
50.
We propose a multivariate nonparametric technique for generatingreliable short-term historical yield curve scenarios and confidenceintervals. The approach is based on a Functional Gradient Descent(FGD) estimation of the conditional mean vector and covariancematrix of a multivariate interest rate series. It is computationallyfeasible in large dimensions and it can account for nonlinearitiesin the dependence of interest rates at all available maturities.Based on FGD we apply filtered historical simulation to computereliable out-of-sample yield curve scenarios and confidenceintervals. We back-test our methodology on daily USD bond datafor forecasting horizons from 1 to 10 days. Based on severalstatistical performance measures we find significant evidenceof a higher predictive power of our method when compared toscenarios generating techniques based on (i) factor analysis,(ii) a multivariate CCC-GARCH model, or (iii) an exponentialsmoothing covariances estimator as in the RiskMetricsTM approach. 相似文献