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31.
Why economic dynamics matter in assessing climate change damages: Illustration on extreme events 总被引:1,自引:0,他引:1
Extreme events are one of the main channels through which climate and socioeconomic systems interact, and it is likely that climate change will modify the probability distribution of the losses they generate. The long-term growth models used in climate change assessments, however, cannot capture the effects of such short-term shocks. To investigate this issue, a non-equilibrium dynamic model (NEDyM) is used to assess the macroeconomic consequences of extreme events. This exercise allowed us to define the economic amplification ratio, as the ratio of the overall production loss due to an event to its direct costs. This ratio could be used to improve the cost-benefit analysis of prevention measures. We found also that, unlike a Solow-like model, NEDyM exhibits a bifurcation in GDP losses: for each value of the capacity to fund reconstruction, GDP losses remain moderate if the intensity and frequency of extremes remain under a threshold value, beyond which GDP losses increase sharply. This bifurcation may partly explain why some poor countries that experience repeated natural disasters cannot develop. Applied to the specific issue of climate change, this model highlights the importance of short-term constraints in the assessment of long-term damages, and shows that changes in the distribution of extremes may entail significant GDP losses in absence of specific adaptation. It suggests, therefore, that to avoid inaccurately low assessments of damages, researchers must take into account the distribution of extremes instead of their average cost and make explicit assumptions on the organization of future economies. 相似文献
32.
In a continuous‐time model of a complete information economy, we examine the case of a “pure” speculator who chooses to trade only on forward or futures contracts written on interest‐rate‐sensitive instruments. Assuming logarithmic utility, we assess whether his strategy exhibits the same structure as when he uses primitive assets only. It turns out that when interest rates follow stochastic processes, as in the model of Heath, Jarrow, and Morton (1992), where the instantaneous forward rate is driven by an arbitrary number of factors, the speculative trading strategy involving forwards exhibits an extra term vis‐a‐vis the one using futures or primitive assets. This extra term, different from a Merton–Breeden dynamic hedge, is novel and can be interpreted as a hedge against an “endogenous risk,” namely the interest‐rate risk brought about by the optimal trading strategy itself. Thus, only the strategy using futures (or the cash assets themselves) involves a single speculative term, even for the Bernoulli speculator. This result illustrates another major aspect of the marking to market feature that differentiates futures and forwards, and thus has some bearing on the issue of the optimal design of financial contracts. Real financial markets being, in fact, incomplete, the additional “endogenous” risk associated with forwards cannot be hedged perfectly. Since using futures eliminates the latter, risk‐averse agents will find them attractive in relation to forward contracts, other things being equal. © 2000 John Wiley & Sons, Inc. Jrl Fut Mark 20: 507–523, 2000 相似文献
33.
In this paper, we analyze the risk-taking behavior of banks in emerging economies in a context of international capital mobility. Our paper highlights a new channel through which depositors can exercise pressure to control risk-taking. Depositors can reallocate their savings away from their home country to the more protective system of a developed economy. We recover a classical result according to which increased competition resulting from more international financial openness induces banks to take excessive risks. We find however that sufficiently high financial openness is necessary for a positive link between financial transparency and safe risk management. Finally, we test the relationship between disclosure, financial openness and bank risk-taking for a panel of 258 banks from the MENA region and Turkey. 相似文献
34.
Riccardo Peccei Patrice Rosenthal 《International Journal of Human Resource Management》2013,24(1):66-86
This paper provides a first attempt at conceptualizing and operationalizing the notion of commitment to customer service (CCS) as part of a broader concern to explore the determinants of key aspects of service quality and of individual-level performance in service organizations. Based on an explicitly behavioral definition of commitment to customer service, we first set out a model of the antecedents of CCS. We then test it using data from a representative sample of 717 employees of a major food-retailing organization in the UK. The results suggest that commitment to customer service is primarily a non-calculative phenomenon driven above all by affective. normative altruistic concerns, rather than by overtly instrumental considerations. Additional significant determinants of CCS were job pressure, job routinization. job competence and employees' understanding of customer service requirements. Research and policy implications of the study are discussed. 相似文献
35.
Patrice Rosenthal 《Journal of Management Studies》2004,41(4):601-622
ABSTRACT This paper argues that the conception of management control as an employee resource can enhance critical understandings of front‐line service work. The argument is developed first through a critique of the contemporary control literature and its prominent worker images of smiling docility and haggard exhaustion. Seeking to encourage accounts more sensitive to the subjectivity and agency of service workers, the paper calls for more research attention to the question of how these employees experience and evaluate management control in relation to their self‐defined interests. Analysis of the nature of contemporary service work suggests that one such perceived interest is likely to be interactive control, or the capacity of workers to control and influence those parties with whom they directly interact. Based on a close reading of the emerging empirical literature on services, the article explores various ways in which the bureaucratic, technical and normative regulation designed by management to control service workers is used in turn by workers to further their own control and influence over managers and customers. 相似文献
36.
This paper makes use of a Computable General Equilibrium model to analyze the impact of two agricultural productivity trends on poor households’ food security in Burkina Faso: a negative trend that could arise from many different factors, including land degradation, climate change, and harmful agricultural practices; and a positive trend which may result from enhanced public investment in agriculture, notably in research and development, extension, irrigation, rural roads, rural electrification, and rural education. The results point to a high sensitivity of the poor's consumption to agricultural productivity as well as to stronger impacts on the urban poor than on the rural poor. The current situation is already characterized by severe food insecurity, such that a decline in agricultural productivity is likely to further plunge the urban poor into a deep food crisis. By contrast, positive agricultural productivity trends may help alleviate poverty and food insecurity. Agricultural productivity may indeed affect the poor's food consumption mainly through large changes in agricultural prices and real incomes. Cet article utilise un modèle d’Équilibre Général Calculable pour analyser l'impact des différentes tendances de la productivité agricole sur la sécurité alimentaire des ménages pauvres au Burkina Faso. D'une part, les tendances négatives peuvent résulter de plusieurs facteurs, y compris la dégradation des terres, le changement climatique, et les pratiques agricoles nuisibles. D'autre part, la tendance positive peut résulter de l'investissement public accru dans l'agriculture, notamment dans la recherche et développement, la vulgarisation, l'irrigation, les routes rurales, l′électrification rurale et l′éducation rurale. Les résultats montrent une sensibilité élevée de la consommation des pauvres à la productivité agricole, ainsi que des impacts plus forts sur les populations urbaines pauvres. La situation actuelle est déjà caractérisée par une insécurité alimentaire grave de sorte qu'une baisse de la productivité agricole est susceptible de plonger davantage les pauvres en milieu urbain dans une crise alimentaire profonde. En revanche, la tendance positive sur la productivité agricole peut contribuer à atténuer la pauvreté et l'insécurité alimentaire. La productivité agricole peut en effet affecter la consommation alimentaire des pauvres principalement par le biais de grandes variations des prix agricoles et des revenus réels. 相似文献
37.
Patrice Flynn 《Feminist Economics》2013,19(2):133-137
This article articulates how and why feminist economists can move the quality of life literature forward and help it become a solid part of the social sciences rather than a subject whose perceived value fluctuates with political winds. Readers are challenged to consider and critique a proposed set of expectations to clearly define the field and set standards of excellence. Examples of this approach are provided from the experiences of an economic research firm striving to build on these guidelines in its work with nonprofit and for-profit organizations that design, fund, evaluate, and/or deliver programs that impact quality of life. 相似文献
38.
In this article, we re-examine the relationship between group-based profit sharing and productivity. Our meta-regression analysis of 355 estimates from 56 studies controls for publication selection and misspecification biases and investigates the impact of firm-level unionisation. Profit sharing is positively related to productivity on average, with a stronger relationship where there is higher unionisation. The positive effect of profit sharing on productivity is larger in cooperative firms and in transition economies. Separate meta-analysis of interactions suggests that profit sharing works better in combination with capital investment and employee participation in decisions. 相似文献
39.
This article investigates the effects of union and nonunion employee representation (ER) on the use of high‐performance work systems (HPWSs) in the French context. We use microdata from a nationally representative survey (REPONSE 2010–11) and estimate models dealing with the potential endogeneity of ER. After controlling for endogeneity and for a range of workplace characteristics, regression analyses suggest that neither union nor nonunion representatives are inherently against the use of HPWSs. Moreover, these forms of ER cannot be regarded as substitutes for one another. Results vary, depending on what type of bundle of practices is considered. © 2016 Wiley Periodicals, Inc. 相似文献
40.
Abraham Lioui Pascal Nguyen Duc Trong Patrice Poncet 《The GENEVA Risk and Insurance Review》1996,21(1):103-122
This article derives optimal hedging demands for futures contracts from an investor who cannot freely trade his portfolio of primitive assets in the context of either a CARA or a logarithmic utility function. Existing futures contracts are not numerous enough to complete the market. In addition, in the case of CARA, the nonnegativity constraint on wealth is binding, and the optimal hedging demands are not identical to those that would be derived if the constraint were ignored. Fictitiously completing the market, we can characterize the optimal hedging demands for futures contracts. Closed-form solutions exist in the logarithmic case but not in the CARA case, since then a put (insurance) written on his wealth is implicitly bought by the investor. Although solutions are formally similar to those that obtain under complete markets, incompleteness leads in fact to second-best optima. 相似文献