全文获取类型
收费全文 | 146篇 |
免费 | 43篇 |
专业分类
化学 | 1篇 |
综合类 | 3篇 |
数学 | 182篇 |
物理学 | 3篇 |
出版年
2023年 | 2篇 |
2022年 | 10篇 |
2021年 | 10篇 |
2020年 | 19篇 |
2019年 | 9篇 |
2018年 | 4篇 |
2017年 | 6篇 |
2016年 | 9篇 |
2015年 | 2篇 |
2014年 | 22篇 |
2013年 | 12篇 |
2012年 | 8篇 |
2011年 | 9篇 |
2010年 | 6篇 |
2009年 | 8篇 |
2008年 | 9篇 |
2007年 | 5篇 |
2006年 | 5篇 |
2005年 | 4篇 |
2004年 | 3篇 |
2003年 | 2篇 |
2001年 | 2篇 |
2000年 | 1篇 |
1999年 | 3篇 |
1997年 | 1篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1993年 | 3篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1988年 | 2篇 |
1987年 | 1篇 |
1985年 | 5篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1976年 | 1篇 |
排序方式: 共有189条查询结果,搜索用时 31 毫秒
41.
根据经济学中的后悔理论,首次在经典的最优序贯搜索问题中引入了决策者在搜索过程中的后悔和欣喜心理. 模型发现,如果决策者具备完美预期,那么她对后悔和欣喜的敏感度之差将直接决定她的搜索行为与最优搜索的偏差程度和方向,并且对于预期性后悔的敏感度越大则搜索程度越低. 这符合实验文献里“搜索过少”的结论. 进一步分析发现,在停止搜索后能知晓反事件价格的情况下,带有预期性后悔和欣喜的搜索将会趋向于经典的最优搜索策略. 如果对于后悔和欣喜的敏感度会受到搜索过程中经历过的类似心理的影响,模型对价格召回也作出了合理解释. 相似文献
42.
43.
Jaromír Ková?íkPablo Brañas-Garza Ramón Cobo-ReyesMaría Paz Espinosa Natalia Jiménez Giovanni Ponti 《Physica A》2012,391(3):849-853
We provide empirical evidence to support the claims that social diversity promotes prosocial behavior. We elicit a real-life social network and its members’ adherence to a social norm, namely inequity aversion. The data reveal a positive relationship between subjects’ prosociality and several measures of centrality. This result is in line with the theoretical literature that relates the evolution of social norms to the structure of social interactions and argues that central individuals are crucial for the emergence of prosocial behavior. 相似文献
44.
45.
《Operations Research Letters》2021,49(6):914-919
A recent experimental study shows that human decision-makers exhibit sourcing diversification due to supply uncertainty. It has been pointed out that loss aversion is unable to explain this ordering bias. In this paper, we show that loss aversion with reference dependency can explain this decision bias, and the type of reference point matters in sourcing decisions. 相似文献
46.
We study independent private-value all-pay auctions with risk-averse players. We show that: (1) Players with low values bid lower and players with high values bid higher than they would bid in the risk neutral case. (2) Players with low values bid lower and players with high values bid higher than they would bid in a first-price auction. (3) Players’ expected utilities in an all-pay auction are lower than in a first-price auction. We also use perturbation analysis to calculate explicit approximations of the equilibrium strategies of risk-averse players and the seller’s expected revenue. In particular, we show that in all-pay auctions the seller’s expected payoff in the risk-averse case may be either higher or lower than in the risk neutral case. 相似文献
47.
William T. Ziemba 《Annals of Operations Research》2009,166(1):5-22
Standard finance portfolio theory draws graphs and writes equations usually with no constraints and frequently in the univariate
case. However, in reality, there are multivariate random variables and multivariate asset weights to determine with constraints.
Also there are the effects of transaction costs on asset prices in the theory and calculation of optimal portfolios in the
static and dynamic cases. There we use various stochastic programming, linear complementary, quadratic programming and nonlinear
programming problems. This paper begins with the simplest problems and builds the theory to the more complex cases and then
applies it to real financial asset allocation problems, hedge funds and professional racetrack betting.
This paper is based on a keynote lecture at the APMOD conference in Madrid in June 2006. It was also presented at the London
Business School. Many thanks are due to APMOD organizers Antonio Alonso-Ayuso, Laureano Escudero, and Andres Ramos for inviting
me and for excellent hospitality in Madrid. Thanks are also due to my teachers at Berkeley who got me on the right track on
stochastic and mathematical programming, especially Olvi Mangasarian, Roger Wets and Willard Zangwill, and my colleagues and
co-authors on portfolio theory in finance and horseracing, especially Chanaka Edirishinge, Donald Hausch, Jarl Kallberg, Victor
Lo, Leonard MacLean, Raymond Vickson and Yonggan Zhao. 相似文献
48.
从组合的视角出发,考虑创业企业家的风险厌恶程度,通过等价利率将创业企业的风险资本融资契约适应到CAPM框架下,利用纳什议价解刻画双方在信息不对称下的均衡解,基于风险-收益的角度建立了最优融资契约设计模型,为创业企业融资提供了契约设计和风险资本类型选择的一个依据,并通过算例说明了模型的可行性。研究还表明,创业企业引入风险资本优于纯债务融资,而股权的分配则取决于双方的议价力。同时,风险厌恶程度越低的创业企业家越趋向于选择独立的风险投资机构;风险厌恶程度越高的创业企业家越趋向于选择公司背景的风险投资机构;而风险厌恶程度不高,考虑后期贷款的创业企业家则趋向于选择银行背景的风险投资机构。 相似文献
49.
针对社区项目博弈的一般模型,应用贪婪算法求解项目博弈的近似社会最优指派,给出参与者重加权分配机制,证明贪婪算法求得的指派恰好是非合作项目博弈的一个纳什均衡.定义控制参数,给出边际效益后悔值定义,利用后悔值改进了贪婪算法,证明基于后悔值贪婪算法求得的指派是非合作项目博弈的一个纳什均衡.通过数值仿真实验发现,与模拟退火算法比较,贪婪算法能够得到更好的社会效益,而且基于后悔值贪婪算法比贪婪算法得到更好的社会效益. 相似文献
50.
This article discusses the determination of risk capital based on “aversion” functions. Aversion functions weigh different outcomes according to perceived severity. Many practical and popular risk measures are usefully viewed in terms of aversion functions including those arising from distortion operators and risk margin loadings. The approach of this paper builds on, unifies, and extends existing disparate approaches discussed in the literature. Analytical and computer generated illustrations are given as well as suggestions for the practical determination of aversion functions. 相似文献