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1.
V. Filipe Martins-da-Rocha 《Journal of Mathematical Economics》2003,39(8):863-889
The purpose of this paper is to provide an existence result of equilibria for economies with a measure space of agents, a non-trivial production sector and an infinite dimensional commodity space. The commodity space is modeled by an ordered separable Banach space whose positive cone has a non-empty interior. The discretization approach proposed in this paper, allows us to extend the existence results in Khan and Yannelis [Equilibrium in markets with a continuum of agents and commodities. In: Khan, M.A., Yannelis, N.C. (Eds.), Equilibrium Theory in Infinite Dimensional Spaces. Springer, Berlin, 1991] and Podczeck [Economic Theory 9 (1997) 585] to economies with a non-trivial production sector and with possibly non-ordered but convex preferences as well as partially ordered (possibly incomplete) but non-convex preferences. 相似文献
2.
GUNTER Stephan GEORG MÜLLER-FÜRSTENBERGER PASCAL Previdoli 《Environmental and Resource Economics》1997,10(1):27-40
Do we need an overlapping generations model for the economics of global warming? To answer this question, an infinitely-lived agent (ILA) approach and an overlapping generations (OLG) model are contrasted. ILA and OLG can be viewed as polar representations of intergenerational altruism. With ILA an immortal agent acts through his investment/savings decisions as trustee on the behalf of the future generations. With OLG, agents need not behave altruistic. They simply save during working years and dissave completely during retirement. Nevertheless, ILA and OLG must not differ in their implication for greenhouse policy. Greenhouse gas abatement is a straightforward alternative to physical capital formation and, even without altruism, each age cohort has an incentive to provide current abatement in order to reduce future damages attributable to climate change. Indeed, under reasonable assumptions and parameter values, our simulations reveal such an invariance result. Provided carbon taxes are the only policy tool and tax revenues are recycled through socially mandated rules, projections of economic growth, climate change and energy consumption are only insignificantly affected by the choice of approach. 相似文献
3.
Olga Shvetsova 《Constitutional Political Economy》2005,16(2):125-141
William Riker ((1964) Federalism: Origin, Operation, Significance. Boston: Little Brown) stressed the problem of the contested nature of federal institutions and argued that federations existed
amidst the ongoing challenge to their rules, that federal institutions were being continuously endogenously produced in the
interaction of political parties rather than serving as self-enforceable constraints on the political process. As parties
changed, so did federalism, and eventually the balance was bound to shift to either one or the other extreme as far as the
degree of centralization was concerned. An alternative approach to essentially the same problem of federal instability was
to conceptualize the underlying game differently, as a game of coordination, so that institutions would be accepted as constraints
and would therefore be self-enforceable because they allow the players to avoid the chaos and successfully converge to an
outcome with payoffs exceeding their reservation values (Hardin, 1989, Ordeshook, 1992). The third proposed solution, consociationalism,
emphasizes the elite effort to overcome the conflictual nature of the institutional choice (Lijphart, 1977). Here, as in the
coordination argument, the hope is that one could create incentives for politicians to view the existing rules as advantageous
and to avoid redistribution by means of the institutional revision. Yet, just like the coordination argument, it is based
on an implicit assumption that politicians are more easily motivated to act “cooperatively” than are their constituencies.
The missing step in the literature is the mechanism by which this more or less “cooperative” behavior of elected politicians
could be sustainable in the environment of popular accountability. An essential component in building the theory of institutional
design is to show the possibility in a democracy of elected politicians cooperating on institutional matters even when each
of their constituencies would prefer to adjust the constitutional terms to its own advantage. Elite “cooperativeness” must
be sustainable even in the presence of outside challengers promising to stay closer to the constituent preferences. Here,
I present a model of mass-elite equilibrium of constitutional legitimacy, which demonstrates the possibility to motivate the
incumbents to sustain the institutional stability while at the same time protecting them from electoral defeat. I also discuss
the difficulties and limitations that such a solution faces, in particular, in plural societies.
JEL classification: H77, D02
In working on this paper, I have benefited from the discussions with Mikhail Filippov, Peter Ordeshook, Charles Kromkowski,
Carol Mershon, and from the comments of the participants of the conference on ‘‘Micro-Foundations of Federal Institutional
Stability’’ at the MicroIncentives Research Center at Duke University, Durham, NC, April 30–May 1, 2004, and of the Lansing
Lee proseminar at the University of Virginia. The responsibility for the many remaining flaws is solely mine. 相似文献
4.
Summary. We prove existence of a competitive equilibrium in a version of a Ramsey (one sector) model in which agents are heterogeneous
and gross investment is constrained to be non negative. We do so by converting the infinite-dimensional fixed point problem
stated in terms of prices and commodities into a finite-dimensional Negishi problem involving individual weights in a social
value function. This method allows us to obtain detailed results concerning the properties of competitive equilibria. Because
of the simplicity of the techniques utilized our approach is amenable to be adapted by practitioners in analogous problems
often studied in macroeconomics.
Received: September 13, 2001; revised version: December 9, 2002
RID="*"
ID="*" We are grateful to Tapan Mitra for pointing out errors as well as making very valuable suggestions. Thanks are due
to Raouf Boucekkine and Jorge Duran for additional helpful discussions. We also thank an anonymous referee for his/her helpful
comments. The second author acknowledges the financial support of the Belgian Ministry of Scientific Research (Grant ARC 99/04-235
“Growth and incentive design”) and of the Belgian Federal Goverment (Grant PAI P5/10, “Equilibrium theory and optimization
for public policy and industry regulation”).
Correspondence to: C. Le Van 相似文献
5.
Tax policy analysis in heterogeneous-agent models typically involves the use of smooth tax functions to approximate complex present tax law and proposed reforms. In this paper, we explore the extent to which the tax detail omitted under this conventional approach has macroeconomic implications relevant for policy analysis. To do this, we develop an alternative approach by embedding an internal tax calculator into a large-scale overlapping generations model that, while conditioning on idiosyncratic household characteristics, explicitly models key provisions in the Internal Revenue Code applied to labor income. We find that for a debt-constant steady state analysis of a given tax policy change, both approaches generate similar policy-induced patterns of macroeconomic activity despite variation in the underlying patterns of household tax-preferred consumption and labor supply behavior. However, this variation in underlying behavior is associated with significant quantitative and qualitative differences in macroeconomic aggregates along a debt-financed transition path immediately following a policy change. Consequentially, although the use of unconditional smooth tax functions may be a reasonable modeling simplification for steady state analysis of tax policy, caution should be taken for their use in transition path analysis within heterogeneous-agent models. 相似文献
6.
《Canadian Journal of Administrative Sciences / Revue Canadienne des Sciences de l\u0027Administration》2018,35(1):65-78
We consider the influence of personal and social identity among adolescents on the importance they attach to clothing products and brands. The conceptual framework includes more conventional variables such as socialization (family, peers, media, and celebrities) and individual characteristics (gender and grade level). Based on a sample of 1,596 French high school adolescents, our results highlight: (i) the influence of identity on the importance attached to product and brand; (ii) the mediating effects of personal and social identities; and (iii) the moderating effects of gender and grade level. We conclude with an analysis of theoretical contributions, practical implications, and future research directions. Copyright © 2016 ASAC. Published by John Wiley & Sons, Ltd. 相似文献
7.
Oyakhilomen Oyinbo Jordan Chamberlin Miet Maertens 《Journal of Agricultural Economics》2020,71(3):798-815
Given the marked heterogeneous conditions in smallholder agriculture in Sub-Saharan Africa, there is a growing policy interest in site-specific extension advice and the use of digital extension tools to provide site-specific information. Empirical ex-ante studies on the design of digital extension tools and their use are rare. Using data from a choice experiment in Nigeria, we elicit and analyze the preferences of extension agents for major design features of ICT-enabled decision support tools (DSTs) aimed at site-specific nutrient management extension advice. We estimate different models, including mixed logit, latent class and attribute non-attendance models. We find that extension agents are generally willing to use such DSTs and prefer a DST with a more user-friendly interface that requires less time to generate results. We also find that preferences are heterogeneous: some extension agents care more about the effectiveness-related features of DSTs, such as information accuracy and level of detail, while others prioritise practical features, such as tool platform, language and interface ease-of-use. Recognising and accommodating such preference differences may facilitate the adoption of DSTs by extension agents and thus enhance the scope for such tools to impact the agricultural production decisions of farmers. 相似文献
8.
Alexa Mossaz 《Journal of Sustainable Tourism》2017,25(7):989-1006
ABSTRACTUsing conservation tourism as a test case, this study explores the role high-end travel agents play in selling sustainable tourism. It examines a niche marketing activity in that process. The study focuses on agents’ consideration of ethics as they act as information brokers between tourists and operators. Data were collected from interviews with agents and analysed using a deductive content analysis based on six overarching concepts and theories on ethical decision-making. The findings emphasize the implicit influence within conservation tourism of tourism's ethical dimensions, whilst identifying many constraints that prevent a full consideration and/or disclosure of ethical concerns in the sales process. Most importantly, agents made assumptions using a false consensus bias about clients' preferences for service over concerns for the environment, and were not prepared to discuss the more sensitive issues surrounding conservation with their clients. A number of recommendations are proposed regarding the need to unpack conservation information, overcome the false consensus bias, and agents’ reluctance to discuss ethics in the sales process. Finally, the findings have broader implications for the development of sustainable tourism, which ultimately will depend on a dialogue of ethical concerns and values within the tourism supply chain between suppliers, brokers and tourists. 相似文献
9.
Websites have become a channel for tourism enterprises to market and sell their services online. These enterprises are committed to improving their online services to retain customers and improving their competitiveness. This study aims to measure the effect of website quality dimensions on customer purchasing behaviour, and how this behaviour affects customer electronic (e)-loyalty. It compares the perceptions of 275 customers of travel agencies and 355 hotels using structural equation modelling. Findings revealed that website quality dimensions significantly affect the customer purchasing behaviour. The study highlighted the dimensions with a negative effect to help managers improve their website quality. 相似文献
10.
《Journal of medical economics》2013,16(1-4):139-146
SummaryThis study compared the cost-efficacy of the following approved biological treatment strategies for plaque psoriasis over 18 months: (1) alefacept 15 mg intramuscularly weekly for two 12-week courses; (2) efalizumab 1 mg/kg subcutaneously (SC) weekly; and (3) etanercept 50 mg SC twice weekly for 12 weeks followed by a maintenance dose of 50 mg weekly. Direct utilisation-related costs included drug costs, office fees, injection fees and costs incurred due to adverse events and laboratory monitoring. Efficacy was based on response rates from large-scale clinical trials. At 18 months, total utilisation-related costs for alefacept, efalizumab and etanercept were $26,667, $33,365 and $32,962, respectively. Cost-efficacy, calculated using the corresponding response rates for the three therapies, was comparable ($66,669, $75,828 and $61,041, respectively). Thus, for patients with moderate to severe psoriasis who have responded to therapy, two 12-week courses of alefacept 7 months apart, or weekly maintenance treatment with efalizumab or etanercept, resulted in comparable total cost-efficacy. 相似文献