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991.
本文主要介绍了世界碳纤维的行业格局及日本碳纤维的产业发展,分析了日本碳纤维产业位居世界领先地位的事实,并以东丽、三菱丽阳、东邦三家日本主要碳纤维生产企业为代表,介绍了日本碳纤维技术和产业的发展历程,总结了其发展经验及对我国的借鉴。 相似文献
992.
Online labor markets have great potential as platforms for conducting experiments. They provide immediate access to a large
and diverse subject pool, and allow researchers to control the experimental context. Online experiments, we show, can be just
as valid—both internally and externally—as laboratory and field experiments, while often requiring far less money and time
to design and conduct. To demonstrate their value, we use an online labor market to replicate three classic experiments. The
first finds quantitative agreement between levels of cooperation in a prisoner’s dilemma played online and in the physical
laboratory. The second shows—consistent with behavior in the traditional laboratory—that online subjects respond to priming
by altering their choices. The third demonstrates that when an identical decision is framed differently, individuals reverse
their choice, thus replicating a famed Tversky-Kahneman result. Then we conduct a field experiment showing that workers have
upward-sloping labor supply curves. Finally, we analyze the challenges to online experiments, proposing methods to cope with
the unique threats to validity in an online setting, and examining the conceptual issues surrounding the external validity
of online results. We conclude by presenting our views on the potential role that online experiments can play within the social
sciences, and then recommend software development priorities and best practices. 相似文献
993.
Flows of people,flows of ideas,and the inequality of nations 总被引:2,自引:0,他引:2
The present paper examines a neglected determinant of aggregate productivity: temporary cross-border flows of people. We hypothesize
that interaction between people from different nations facilitates the international diffusion of ideas, thus stimulating
aggregate productivity. In order to assess the causal impact of people flows on productivity, we construct an instrument for
people flows. By analogy to the trade/growth literature, this instrument is derived from a fitted gravity equation involving
geographic determinants of bilateral travel flows. Our cross-section analysis reveal that greater international interaction
leads to higher productivity; a very similar result, qualitatively as well as quantitatively, is obtained when we employ dynamic
panel data methods for the purpose of identification. 相似文献
994.
We compare behavior in modified dictator games with and without role uncertainty. Subjects choose between a selfish action,
a costly surplus creating action (altruistic behavior) and a costly surplus destroying action (spiteful behavior). While costly
surplus creating actions are the most frequent under role uncertainty (64%), selfish actions become the most frequent without
role uncertainty (69%). Also, the frequency of surplus destroying choices is negligible with role uncertainty (1%) but not
so without it (11%). A classification of subjects into four different types of interdependent preferences (Selfish, Social
Welfare maximizing, Inequity Averse and Competitive) shows that the use of role uncertainty overestimates the prevalence of
Social Welfare maximizing preferences in the subject population (from 74% with role uncertainty to 21% without it) and underestimates
Selfish and Inequity Averse preferences. An additional treatment, in which subjects undertake an understanding test before
participating in the experiment with role uncertainty, shows that the vast majority of subjects (93%) correctly understand
the payoff mechanism with role uncertainty, but yet surplus creating actions were most frequent. Our results warn against
the use of role uncertainty in experiments that aim to measure the prevalence of interdependent preferences. 相似文献
995.
Joseph Zeira 《Journal of Economic Growth》2011,16(2):135-156
This paper presents a model of innovations and endogenous economic growth with two main assumptions: first, the cost of searching
for innovations differs across innovations, and second, innovations take time to find. The paper shows that given these two
assumptions together, competition leads to patent races and to duplication of innovative activity. The paper then shows that
duplication significantly reduces the effect of scale on growth. It also shows that competitive R&D creates too much research
on easy innovations, and too little research on the difficult ones. Finally, the paper shows that risk sharing might increase
duplication and reduce growth. 相似文献
996.
Sustaining cooperation in laboratory public goods experiments: a selective survey of the literature 总被引:5,自引:0,他引:5
Ananish Chaudhuri 《Experimental Economics》2011,14(1):47-83
I survey the literature post Ledyard (Handbook of Experimental Economics, ed. by J. Kagel, A. Roth, Chap. 2, Princeton, Princeton
University Press, 1995) on three related issues in linear public goods experiments: (1) conditional cooperation; (2) the role of costly monetary
punishments in sustaining cooperation and (3) the sustenance of cooperation via means other than such punishments. Many participants
in laboratory public goods experiments are “conditional cooperators” whose contributions to the public good are positively
correlated with their beliefs about the average group contribution. Conditional cooperators are often able to sustain high
contributions to the public good through costly monetary punishment of free-riders but also by other mechanisms such as expressions
of disapproval, advice giving and assortative matching. 相似文献
997.
Andreas Chai 《Journal of Bioeconomics》2011,13(3):181-203
This paper posits that significant changes in 19th century British recreational travel patterns resulted from a change in
the manner in which tourists used entertaining stimuli in order to attain pleasure. Consumers no longer merely viewed arousing
stimuli, but attempted to use them to produce emotional states of being which they could partially modify to intensify pleasurable
feelings (Damasio, Looking for Spinoza: Joy, sorrow, and the feeling brain, William Heinemann, 2003). The impetus for this modification stemmed from an increasing awareness that emotional responses could be to some degree
self-cultivated, as embodied in the Romantic ethos that become popular at the time via the emergence of the paperback novel
and magazine industry (Campbell, The romantic ethic and the spirit of modern consumerism, Blackwell, 1987). By learning how to manipulate and modify mental images in a way that may not necessarily correspond with objective reality,
Romantic tourists learned to elicit pleasure through engaging of their imagination. Such a change in the mode of pleasure
seeking had important long run economic consequences for tourist regions throughout the European continent. 相似文献
998.
999.
1000.
魏旭 《生态经济(学术版)》2011,(10)
气候变化问题的综合性和广泛性决定整个社会每一分子都直接或间接地对气候变化有不可分割的作用。传统环境治理思想过多地将环境管理和提高义务置于诸如政府、环保团体等公共利益卫道士之手,单纯依靠公共利益团体的力量在气候变化背景下已不足以形成有效的社会约束机制,许多高瞻远瞩的企业已意识到自身环境责任与社会形象的重要性,通过自我约束行为为缓解气候变化添砖加瓦,自愿环境协议为此提供了制度平台。国际上早已有将自愿环境协议作为气候变化应对战略的一项重要措施的实践,我国的相关试点工作也已悄然铺开。因此,如何正视自愿环境协议的柔性治理功能,以及如何促进其在我国气候变化应对机制中发挥正面作用,成为我国环境治理面临的新问题。 相似文献