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排序方式: 共有1509条查询结果,搜索用时 31 毫秒
31.
We consider the infinite-horizon optimal portfolio liquidation problem for a von Neumann–Morgenstern investor in the liquidity
model of Almgren (Appl. Math. Finance 10:1–18, 2003). Using a stochastic control approach, we characterize the value function and the optimal strategy as classical solutions
of nonlinear parabolic partial differential equations. We furthermore analyze the sensitivities of the value function and
the optimal strategy with respect to the various model parameters. In particular, we find that the optimal strategy is aggressive
or passive in-the-money, respectively, if and only if the utility function displays increasing or decreasing risk aversion.
Surprisingly, only few further monotonicity relations exist with respect to the other parameters. We point out in particular
that the speed by which the remaining asset position is sold can be decreasing in the size of the position but increasing
in the liquidity price impact.
相似文献
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Alexander Rodriguez‐Melo S. Afshin Mansouri 《Business Strategy and the Environment》2011,20(8):539-552
Although sustainable development is increasingly becoming a part of business plans, it is unclear what makes the economic, social and environmental dynamics strategically compatible. This research examines which of the following in sustainable development – government policy, managerial attitude and stakeholder engagement – is the most influential on the profitability of companies in the UK construction sector. Quantitative and qualitative analyses were rendered through a survey and semi‐structured interviews. Patterns of ambiguity in legislation were discovered as an obstacle for changing the sector's mind‐set. Stakeholder engagement was identified as the defining factor increasing managers' awareness, helping legislation to be effectively implemented and making sustainability highly appealing to clients. These findings indicate that to gain competitive advantage, companies should embark on long‐term strategic alliances which adopt the proposals of environmental non‐governmental organisations and closely follow public opinion. This, strengthens brand equity, allows for premium pricing, increases market share and maximizes profit. Copyright © 2011 John Wiley & Sons, Ltd and ERP Environment. 相似文献
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Policy debates suggest a future role for geologic carbon sequestration. As geologic sequestration (GS) evolves from enhanced oil recovery operations to an emissions‐mitigation option, regulations must evolve to manage the risks of carbon dioxide (CO2) migration. We develop an engineering‐economic model to understand the key deployment pathways in this transition. Major results reveal that dedicated CO2 storage in aquifers is associated with the greatest net revenues under only a limited number of scenarios. This finding suggests that regulators should anticipate GS operations in reservoirs that were not initially intended as GS operations and, therefore, may have higher leakage rates. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
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How young firms achieve growth: reconciling the roles of growth motivation and innovative activities
This special issue focuses on entrepreneurship, innovation and enterprise dynamics, as these key components of any prospering economy are at the heart of the current policy discussion. It gathers the latest national and comparative cross-country evidence about: new business venture formation and the role of framework conditions in fostering entrepreneurial activities; the determinants and outcomes of firms’ innovative activities and, more generally, of business and innovation dynamics; and the determinants and patterns of post-entry firm growth performance. The contributions synthesised in this introductory piece all rely on sound micro-level data and robust econometrics and propose novel findings that are relevant for policy making. Among them, that risk aversion encourages individuals to invest in balanced skill profiles, making them more likely to become entrepreneurs; and that while micro firms may grow when they are young, they are less likely to do so when old. 相似文献
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This article presents an analysis of occupational structure, a key component of the ‘Little Divergence’, in an eastern‐central European economy under the second serfdom, using data on 6,983 Bohemian villages in 1654. Non‐agricultural activity was lower than in western Europe, but varied positively with village size, pastoral agriculture, sub‐peasant strata, Jews, freemen, female headship, and mills, and negatively with arable agriculture and towns. It showed a curvilinear relationship with the ‘second serfdom’, as proxied by landlord presence on village holdings. Landlord presence in serf villages also reversed the positive effects of female headship and mills on non‐agricultural activities. Under the second serfdom, landlords encouraged serf activities from which they could extract rents, while stifling others which threatened manorial interests. 相似文献
40.
We develop a model in which costly voting in a large, two‐party election is a sequentially rational choice of strategic, self‐interested players who can reward fellow voters by forming stronger ties in a network formation coordination game. The predictions match a variety of stylized facts, including explaining why an individual's voting behavior may depend on what she knows about her friends' actions. Players have imperfect information about others' voting behavior, and we find that some degree of privacy may be necessary for voting in equilibrium, enabling hypocritical but useful social pressure. Our framework applies to any costly prosocial behavior. 相似文献