城市遥感在数字城市中的应用

随着城市化和信息化的稳步推进,数字城市建设被各地纳上议程。城市遥感在海量数据获取和处理方面具有强大优势,因而成为数字城市建设的核心技术之一。本文就城市遥感在数字城市建设中的具体应用进行了详细阐述。     

THEORY AND EVIDENCE IN PSYCHOLOGY AND ECONOMICS ABOUT MOTIVATION CROWDING OUT: A POSSIBLE CONVERGENCE?

The empirical relevance of motivation crowding out is a controversial issue in economics and psychology. As already pointed out by Frey and Jegen ( 2001 ), this is partly due to the historical development of two distinct and parallel strands of literature that stem from different theoretical traditions, have radically different tenets and therefore, are difficult to reconcile. In this survey, we go back to the details of the debates that took place independently among psychologists and economists, and sketch an integrative interdisciplinary approach likely to favor a more fruitful collaboration between economics and psychology. From this perspective, experimental economics (both field and laboratory) is viewed as a major research field shedding new light on the conditions of relevance of motivation crowding out.     

Environmental versus Human-Induced Scarcity in the Commons: Do They Trigger the Same Response?

We study appropriation strategies in common pool resources where extinction is a credible threat. Here we present an experimental study of the appropriation of common pool resources in a dynamic setting where resource availability depends on the initial environmental characteristics of the common resource and on human-induced resource depletion due to users’ appropriation patterns. Our results show that initial resource scarcity limits appropriation by inducing an initial caution among users that persists throughout of the game. Additionally, we find that subjects restrain their appropriation strategies when scarcity increases. However, this concern for resource scarcity is not enough to prevent resource depletion. Agents do not counteract the previous rounds’ appropriation strategies but follow the appropriation trend. High appropriation levels are followed by higher appropriation strategies, thus promoting the well known tragedy of the commons. Often concern for resource preservation is not great enough to limit appropriation.      

北斗导航公路物流信息系统的数据库设计

数据库在北斗卫星导航信息系统中占有举足轻重的地位,关系到系统的成败,需综合考虑多种因素进行设计。在研究卫星导航系统网络结构、系统功能和模块构成后,提出了系统数据库的设计思想,给出了比较详细的主要数据表结构,并分析了主要数据表之间的关联关系。     

Conditional Cooperation and Voluntary Contributions to Public Goods

We compare a partners condition , where the same small group of subjects plays a repeated public good game, to a strangers condition , where subjects play this game in changing group formations. From the first period onward, subjects in the partners condition contribute significantly more to the public good than subjects in the strangers condition. Strangers' contributions show continual decay, while partners' contributions fluctuate on a high level prior to decreasing in the final periods. We interpret subjects' behaviour in terms of conditional cooperation which is characterized by both future-oriented and reactive behaviour.
JEL classifications: C 91; C 92; H 41     

信号与系统实验课程教学改革的研究与探索

分析了目前信号与系统实验课程存在的问题,结合多年从事信号与系统实验教学经验,提出一系列改革方案。实践证明这些方法有助于提高教学质量,增强学生的学习兴趣,逐步培养学生的创新意识,促进了对学生综合能力的培养。     

Sufficiency of an outside bank and a default penalty to support the value of fiat money: Experimental evidence

We present a model in which an outside bank and a default penalty support the value of fiat money, and experimental evidence that the theoretical predictions about the behavior of such economies, based on the Fisher-condition, work reasonably well in a laboratory setting. The import of this finding for the theory of money is to show that the presence of a societal bank and default laws provide sufficient structure to support the use of fiat money and use of the bank rate to influence inflation or deflation, although other institutions could provide alternatives.     

Disposition Effect and Tolerance to Losses in Stock Investment Decisions: An Experimental Study

This study aims to verify whether people tolerate losses within the self-established limit through an experimental methodological procedure. In addition, it aims to analyze the decision behavior in terms of the time they take to realize gains and losses, as a way to test the manifestation of the disposition effect. The experiment consists in decision to sell stock from 4 companies, 2 with potentially negative returns and 2 with positive returns. The participants demonstrated that they accept more losses than they had attested they would bear in advance and manifested the typical disposition effect, under which people sell the winning stock earlier than the losing stock. There was no difference between men and women in the manifestation of the disposition effect, and women performed worse because they had established lower bearable losses and higher required gains in advance.     

郑州航空港经济综合实验区政策效用评估

航空港经济综合实验区作为经济技术开发区的一种重要形式,对内陆地区而言,是抢占现代产业体系制高点、突破地理条件约束、挖掘自身区位优势的全新探索。应用双重差分法评估郑州航空港试验区对区域经济的作用,结果表明：航空港对区域经济增长具有积极贡献。同时结果显示区域经济增长的重要推动力是通过航空港自身大量基础设施等投资实现的,但在短期内整合、带动区域其它资源禀赋方面尚未达到预期效果。在此基础上,从长期着眼,对航空港本身在整合区域资源、改善区内资源禀赋方面提出建议,为其它省份通过航空港建设推动区域经济增长提供借鉴。     

Would I lie to you? On social preferences and lying aversion

This paper reinterprets the evidence on lying or deception presented in Gneezy (Am. Econ. Rev. 95(1):384–394, 2005). We show that Gneezy’s data are consistent with the simple hypothesis that people are one of two kinds: either a person will never lie, or a person will lie whenever she prefers the outcome obtained by lying over the outcome obtained by telling the truth. This implies that so long as lying induces a preferred outcome over truth-telling, a person’s decision of whether to lie may be completely insensitive to other changes in the induced outcomes, such as exactly how much she monetarily gains relative to how much she hurts an anonymous partner. We run new but broadly similar experiments to those of Gneezy in order to test this hypothesis. While we also confirm that there is an aversion to lying in our subject population, our data cannot reject the simple hypothesis described above either.

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