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排序方式: 共有436条查询结果,搜索用时 15 毫秒
1.
Raffi Duymedjian Olivier Germain Guillaume Ferrante Mary Catherine Lavissière 《Entrepreneurship & Regional Development》2019,31(7-8):605-622
ABSTRACTThis paper aims to explore the conceptual potential of the Deleuzian notion of the encounter in order to better understand the genealogy of opportunities. We adopt a processual perspective of opportunities. In order to translate this notion to the domain of entrepreneurship, we analysed and interpreted Jean-Marc Vallée’s Dallas Buyers Club. This film follows the creation of the first club in the United States that illegally allowed HIV-positive people to supply themselves with foreign antiretroviral drugs from Mexico or Japan. The article highlights encounters in this process that disturb the entrepreneur’s belief systems and allow him or her to be open to potential opportunity. It finally explores how the encounter may improve our understanding of the political becoming of opportunities within the entrepreneurial process. 相似文献
2.
The nature and magnitude of the economic shocks that have affected the per capita GDP of 16 OECD countries are analyzed over a long period using the outlier method. Strong proof of infrequent large permanent and transitory shocks were found, essentially resulting from the two major wars in the twentieth century, the recession in the 1920s, the Great Depression, among others. We also examine the nature of the output trend by combining different tests of non-stationarity on different GDP series corrected by the outliers detected. It is shown that the per capita GDP series cannot reject the unit root hypothesis in 13 of the 16 countries examined. No conclusion could be drawn for the other countries because the test results were contradictory. 相似文献
3.
When the indemnity schedule is contingent on the farmer's price and individual yield, an optimal crop revenue insurance contract depends only on the farmer's gross revenue. However, this design is not efficient if, as is the case with available contracts, the coverage function is based on imperfect estimators of individual yield and/or price. The producer's degree of prudence and the extent of basis risks have important influences on the optimal indemnity schedule. In this broader context, optimal protection is not provided by available U.S. crop insurance contracts and may include combinations of revenue insurance, yield insurance, futures, and options contracts. 相似文献
4.
5.
Olivier Donni 《The Canadian journal of economics》2006,39(1):124-144
Abstract. In this paper, we present a collective model of household demand based on Pareto‐efficiency. In addition, we suppose that (a) each household member is egoistic and consumption is purely private, (b) there is a set of distribution factors and (c) there is one exclusive good. Then we derive the testable restrictions that are implied by this theoretical setting and show how welfare comparisons at the individual level can be performed. JEL classification: D11 相似文献
6.
Abstract. Researchers have used stylized facts on asset prices and trading volume in stock markets (in particular, the mean reversion
of asset returns and the correlations between trading volume, price changes and price levels) to support theories where agents
are not rational expected utility maximizers. This paper shows that this empirical evidence is in fact consistent with a standard
infinite horizon – perfect information – expected utility economy where some agents face leverage constraints similar to those
found in todays financial markets. In addition, and in sharp contrast to the theories above, we explain some qualitative differences
that are observed in the price-volume relation on stock and on futures markets.
We consider a continuous-time economy where agents maximize the integral of their discounted utility from consumption under
both budget and leverage constraints. Building on the work by Vila and Zariphopoulou (1997), we find a closed form solution,
up to a negative constant, for the equilibrium prices and demands in the region of the state space where the constraint is
non-binding. We show that, at the equilibrium, stock holdings volatility as well as its ratio to stock price volatility are
increasing functions of the stock price and interpret this finding in terms of the price-volume relation.
We would like to thank the editor and two anonimous referees for valuable substantive comments. Our gratitude also to Franklin
Allen, Kerry Back, Domenico Cuoco, Xavier Freixas, Sanford Grossman, Michel Habib, Lutz Hendricks, Richard Kihlstrom, Fernando
Restoy, Mary Thomson, Jean-Luc Vila, participants to seminars at Birkbeck College, Carnegie-Mellon, Columbia, ESSEC, HEC,
IAE, INSEAD, London Business School, London School of Economics, McGill, Michigan, National University of Singapore, Pompeu
Fabra, North Carolina, Washington-St-Louis, Wharton, the Jornadas de Economía Financiera BBV, and the Meetings of the Society
for Economic Dynamics and Control and the American Finance Association. Special thanks are due to Süleyman Basak for his enthusiastic
support and many helpful suggestions. The usual disclaimer applies. We gratefully acknowledge the support of the BBV and Caja
de Madrid Foundations and CREF (both authors) and of the Spanish Ministry of Education under DGICYT grant no. PB93-0388 (first
author). 相似文献
7.
Olivier Le Courtois 《Asia-Pacific Financial Markets》2018,25(2):87-109
This article provides new results on the tempered multistable approach. After a preliminary section recalling the main definitions, we show the correspondence between a series representation and a characteristic function representation for asymmetrical field-based tempered multistable processes and for asymmetrical independent increments tempered multistable processes. We also show that both processes are semimartingales, which is a convenient property in finance. Next, we study the structure of autocorrelations that is conveyed by this approach. Finally, we provide an illustration showing the term structures of Value-at-Risk that can be obtained with this model. 相似文献
8.
Optimal Insurance Against Climatic Experience 总被引:1,自引:0,他引:1
Olivier Mahul 《American journal of agricultural economics》2001,83(3):593-604
An optimal insurance contract against a climatic risk is derived in the presence of an uninsurable and dependent aggregate production risk. The optimal design depends on the stochastic dependency between both sources of uncertainty and on the producer's attitude towards risk, especially on his prudent behavior. Rational weather insurance purchasing decisions are also derived. The prudent producer responds to actuarially fair weather insurance by increasing his exposure towards risk. 相似文献
9.
Olivier Bruno 《European Journal of the History of Economic Thought》2013,20(3):467-484
Abstract Harrod's contribution to economic dynamics is very often reduced to the dynamic equation whose character is unstable. Growth theory and cycle theory based on Harrod's contributions aimed at reducing this instability. Following Harrod, who was strongly opposed to the ‘knife-edge’ interpretation, we define the warranted rate of growth as a ‘moving equilibrium’ and focus on its interaction with the effective rate of growth. Our simple Harrodian model generates various dynamics from stable path, to growth cycle and corridor of stability. 相似文献
10.
This article provides a simple model that explains the choice between permanent and temporary jobs. This model, which incorporates important features of actual employment protection legislations neglected by the economic literature so far, reproduces the main stylized facts about entries into permanent and temporary jobs observed in Continental European countries. We find that job protection has very small effects on total employment but induces large substitution of temporary jobs for permanent jobs, which significantly reduces aggregate production. 相似文献