首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 31 毫秒
1.
We extend the classic approach (SIR) to a SEAIRD model with policy controls. A social planner’s objective reflects the trade-off between mortality reduction and GDP, featuring its perception of the value of statistical life (PVSL). We introduce realistic and drastic limitations to the control available to it. Within this setup, we explore the results of various control policies. We notably describe the joint dynamics of infection and economy in different contexts with unique or multiple confinement episodes. Compared to other approaches, our contributions are: (i) to restrict the class of functions accessible to the social planner, and in particular to impose that they remain constant over some fixed periods; (ii) to impose implementation frictions, e.g. a lag in their implementation; (iii) to prove the existence of optimal strategies within this set of possible controls; iv) to exhibit a sudden change in optimal policy as the statistical value of life is raised, from laissez-faire to a sizeable lockdown level, indicating a possible reason for conflicting policy proposals.  相似文献   

2.
This paper examines how different environmental policy types differentially impact firms and why firms vary in their responses to such policies. Based on the mechanisms embedded in policy instruments to create incentives for firms to comply, the characteristics of benefits/costs that policies impose on firms and the institutional context in which policy instruments were created and are sustained, the paper identifies five policy categories. These are category I (command and control), category II (market based), category III (mandatory information disclosures), category IV (business–government partnerships) and category V (private voluntary codes). Different policy types often bestow asymmetrical benefits/costs on firms. Some benefits/costs may constitute ‘private/club goods’ while others may constitute ‘public goods’. Drawing insights from public policy literature, the paper argues that firms can be expected to favor policies whose benefits have the characteristics of private/club goods but the costs of public goods. Thus, understanding the nature of benefits/costs (private/club versus public) and the magnitude of their excludability is critical in explaining the variations in firms' responses. To understand how managers perceive the nature of benefits/costs (monetary as well as non‐monetary), the paper draws on theories and perspectives in the business and public policy field. In doing so, the paper examines the ‘demand’ and the ‘supply’ sides as well as the market and non‐market environments of a given policy. Thus, the paper makes a case for a multi‐theoretic approach to understand variations in managerial assessments of benefits/costs, and consequently variations in their responses to various policy types. Copyright © 2004 John Wiley & Sons, Ltd and ERP Environment.  相似文献   

3.
本文建立了一个连续时间模型,用于分析不确定条件下环境政策的时机选择。模型结果显示,环境政策的采用有两种不可逆性,而且它们在相反的方向上起作用:第一,旨在降低生态危害的政策对社会施加了沉淀成本。它产生立即采用这一政策而不是等待有关生态影响及其经济后果的更多信息的机会成本,这种机会成本使等待而不是现在就采纳政策更可取;第二,环境危害可能部分或完全不可逆。这就意味着立即采用一项政策而不是等待具有沉没收益,即负的机会成本。这种负的机会成本偏离了政策采用中传统的成本一收益分析。因此,现在立即采用一项政策可能是更合适的,即使传统的分析宣称它是不经济的。文章表明,不确定性对环境政策的时机选择有着重要的影响。  相似文献   

4.
Abstract This paper provides a review of economic studies analysing the use of multiple policies – a so‐called policy mix – to cope with single pollution problems. To guide and structure the review, an analytical framework is developed and applied. The framework integrates transaction costs into the analysis of pollution problems and policies to overcome them. Moreover, it understands a pollution externality not only as a market failure but more generally as the failure of private governance structures. Based on this insight, two rationales for using a policy mix are identified. First, a policy mix may help to correct for multiple reinforcing failures of private governance structures, such as pollution externalities and technological spillovers. Second, a policy mix can be employed if the implementation of single first‐best policies brings about high transaction costs, e.g. when marginal pollution damages are heterogeneous or polluters are unlikely to comply with the policy. For each rationale, the relevant literature is presented. Based on the review, avenues for future research are identified.  相似文献   

5.
创新驱动发展战略下,企业需要更多的研发(现代成本动因)投入促进创新,然而创新的高风险性导致市场失灵,因此需要政策支持,引导创新投入。通过统计性描述或实证研究发现,税收优惠政策比会计政策更能引导企业创新投入(尤其是民营企业,而创新战略实施后国有企业创新投资增长速度更快),也促进企业完善相关会计数据;会计政策和数据的完善对考察税收政策的执行起了重要支持作用。研发费用加计扣除政策比所得税税率优惠更能促进高新技术企业研发投入,且促使其更偏向研发支出费用化处理。处于成长期的高新技术企业更偏向研发支出资本化处理,处于成熟期的高新技术企业更偏向研发支出费用化处理。盈利比负债更能促使高新技术企业研发投入。  相似文献   

6.
《Technovation》1999,19(6-7):355-364
Profound changes which have occurred in central and eastern Europe (CEE) have left science and technology systems in those countries in a dilapidated state. Reform efforts have focused on restructuring and privatising research institutes and promoting technology transfer between domestic institutions and between domestic and foreign institutions.1 Both of these reform initiatives are aimed at increasing levels of innovation. Emphasis has been put on introducing the market mechanism. This paper looks at these reforms in CEE, particularly in Poland. The following broad points emerge: First, the track record of efforts to promote technology transfer need to be understood and interpreted in conjunction with a fuller understanding of institutional change, innovation and learning. Technology transfer is meant to encourage innovation, but a range of things need to happen if technology transfer initiatives are to work. Gibbons (Gibbons M. et al., 1994) observed, for example, that effective innovation requires new configurations of knowledge (and skills). The coordination activities required to effect these new configurations within and between organisations and institutions impose their own demands on actors engaged in technology transfer, which rapid privatisation or liberalisation policies in CEE do not begin to address. Reform policies which have focused on introducing new economic incentives need to address change at micro and meso levels. Creating new institutional practice depends not only on creating economic incentives but on wider reform processes, such as creating new organisational practices and encouraging the emergence of new sorts of institutions which can facilitate links. Second, the reform process is a social and political one. Changing the emphasis of policy towards technological development requires a change in power relations so that technological development and innovation, rather than success in science, are prioritised. These political battles greatly influence the pace and nature of change, and in CEE the promotion of technology and innovation is taking place in a context of social upheaval. Social consequences of reform in general and in science and technology in particular are difficult and uncomfortable, and change in this area is perhaps not yet a political priority in some CEE countries.  相似文献   

7.
In this paper we explore the effectiveness of selected research and innovation policies among EU countries. Using data from the AEGIS database and information from the 2015 Bruegel’s Partnership report on research and innovation polices in EU countries, we compare and contrast the response of knowledge intensive firms to a sample of policies. We find that the impact of the policies in our sample varies not only across countries but also across the age of affected firms in those countries. We conclude our analysis with a call for policy makers to begin to investigate the incidence of the impact of their research and innovation policies as measured not only by the age of firms but also by other dimensions.  相似文献   

8.
This paper uses a real options approach to examine the impact of abrupt increases in carbon dioxide emissions and pollutant-related socio-economic costs. It derives optimal investment rules in the form of critical values for both pollutant stock levels and social costs, above which environmental policies should be adopted. Moreover, it determines the optimal emissions abatement level. Our analysis extends the methodology of Pindyck (2000) using jump diffusion processes. We show that if the stock of pollutant is subject to extreme variations and the emissions abatement level is chosen exogenously by the policymaker, then lower levels of the pollutant stock are required to trigger policy adoption. A similar, yet more prominent, effect is observed under the assumption that pollutant-related socio-economic costs and benefits are expected to exhibit abrupt changes. However, different results are obtained when we examine simultaneously the two interrelated decisions, namely, the optimal threshold of emissions abatement and the optimal abatement level. In this case, an increase in the size and/or probability of a jump increases the critical values of both pollutant stock levels and socio-economic costs but leads to higher optimal abatement.  相似文献   

9.
Regions have gained a position at the forefront of the economic development policy agenda. However, the regional approach to economic strategy remains contested. This paper tests the extent to which regional policy in less competitive regions is accounting for issues relating to entrepreneurship and enterprise development as a tool for improving regional competitiveness. It does so by examining policies undertaken by the UK Labour government 1997–2010, drawing on interviews with policy makers and an analysis of relevant policy documents. This paper finds that entrepreneurship policy at the regional level is multidimensional, with policies broadly ranging from those that are either economically or socially driven. Although there is a considerable policy activity in these areas across less competitive regions, enterprise policy making remains relatively undifferentiated across the regions. There are a number of evolutions in regional policy occurring, especially a shift from policies relating to the facilitation of clusters to those focused on developing regional innovation ecosystems. It is found that regional policy makers are under pressure to measure short-term outputs at the expense of long-term nurturing. The paper also finds that there is a tension between using enterprise policy as a tool for improving regional competitiveness or for addressing economic and social disadvantage.  相似文献   

10.
When do governments implement technology policies that allow society to solve social problems at a lower cost? Focusing on the case of energy, we argue that in industrialized democracies, severe social problems provoke an effective technology policy response when the government is unified. A unified government can easily strike the bargains required to secure political support for new technology programs. We test this theory against data on public energy research and development (R&D) in 22 OECD countries, 1980–2006. We find that as government fractionalization increases in a country, the sensitivity of public energy R&D to wasteful energy use, which presents economic and environmental difficulties to the society, declines. The analysis reveals a new reason for ineffective technology policies and contributes to the broad literature on political market failure.  相似文献   

11.
Innovation is perhaps the buzzword in local economic development policy. Associated narrowly with neoliberal ideas, conventional notions of innovation—like its capitalocentric counterparts, enterprise and entrepreneurialism—may promise higher productivity, global competitiveness and technological progress but do not fundamentally change the ‘rules of the game’. In contrast, an emerging field reimagines social innovation as disruptive change in social relations and institutional configurations. This article explores the conceptual and political differences within this pre‐paradigmatic field, and argues for a more transformative understanding of social innovation. Building on the work of David Graeber, I mobilize the novel constructs of ‘play’ and ‘games’ to advance our understanding of the contradictory process of institutionalizing social innovation for urban transformation. This is illustrated through a case study of Liverpool, where diverse approaches to innovation are employed in attempts to resolve longstanding socio‐economic problems. Dominant market‐ and state‐led economic development policies—likened to a ‘regeneration game’—are contrasted with more experimental, creative, democratic and potentially more effective forms of social innovation, seeking urban change through playing with the rules of the game. I conclude by considering how the play–game dialectic illuminates and reframes the way transformative social innovation might be cultivated by urban policy, the contradictions this entails, and possible ways forward.  相似文献   

12.
We study the optimal trading policy of an arbitrageur who can exploit temporary mispricing in a market with two convergent assets. We build on the model of Liu and Timmermann (2013) and include transaction costs, which impose additional limits to the implementation of such convergence trade strategy. We show that the presence of transaction costs could reveal an endogenous stop-loss concern in a certain economy, which affects the optimal policy of the arbitrageur in significant ways. Using pairs of dual-listed Chinese stock shares as samples and a pairs trading strategy based on standard deviation of the spread as benchmark, we demonstrate the efficiency of the strategy implied by our model. Several extensions of our model are also discussed.  相似文献   

13.
Innovation policies addressed to SMEs in Tuscany (and in Italy as well) have given, so far, a very limited contribution to improving the SMEs performance in terms of competitiveness and technological enhancement. The interpretation the paper attempts to demonstrate is that innovation policies have been designed for a ‘generic’ SME, in a frame of traditional sectors, within administrative areas, whereas successful SMEs are not merely operating in a given sector or area; they are agglomerated in peculiar Spatial Systems of Small Enterprises (SESS). The productive, spacial, social models of functioning of a typical SESS are described in order to:

(i) identify the local mechanism of interdependencies (between firms, labour force and local government), which generates relevant flows of external economies;

(ii) prove that innovation policies have neglected the vital characteristic of the SMEs (their agglomertion in SESSs).

Finally, a new innovation policy for SMEs designed by the Regional Government of Tuscany is presented.  相似文献   

14.
Although there are encouraging trends, alcohol abuse continues to be a significant public health problem. Econometric studies of alcohol demand have yielded a great deal of information for alcohol abuse prevention policy. These studies suggest that higher alcohol taxes and stricter drunk‐driving policies can reduce heavy drinking and drunk driving. In this paper we explore the role physician advice plays in the campaign to prevent alcohol‐related problems. Compared to alcohol taxation, physician advice is a more precisely targeted intervention that does not impose extra costs on responsible drinkers. Compared to the resource costs of arresting, processing, and punishing drunk drivers, physician advice may be a lower‐cost intervention. To provide a basis for alcohol policy analysis, we use an alcohol demand framework to test whether physician‐provided information about the adverse consequences of alcohol abuse shifts demand to more moderate levels. There are three aspects of our alcohol demand model that complicate the estimation: (1) the dependent variable is non‐negative (it is a count variable—number of drinks consumed); (2) a non‐trivial number of sample observations have zero values for the dependent variable; and (3) because the data we use is non‐experimental, the treatment variable indicating receipt of advice from a physician may be endogenous. We implement an estimation method that is specifically designed to deal with these three complicating factors. Our results show that advice has a substantial and significant impact on alcohol consumption by males with hypertension, and that failing to account for the endogeneity of advice masks this result. Copyright © 2001 John Wiley & Sons, Ltd.  相似文献   

15.
This study combines insights from the entrepreneurship, competency-based view and innovation policy literature to analyze the relationships among different types of public incentives designed to foster innovation and product innovation at both new ventures and incumbent firms. To test our hypotheses, we ran a system of regression models on a cross-national sample comprised of 5238 firms from 29 European countries and found a different pattern for new ventures and incumbents. Our results suggest that support for attendance or participation in trade fairs and networking with other companies are the most effective methods of promoting product innovation for new ventures. However, for incumbent firms, we found that the most effective policies consisted of tax reduction for R&D expenditures and subsidies for acquiring buildings or other infrastructure(s) for innovation activities. This distinction prompts interesting insights related to theory development in research on entrepreneurship and innovation policy.  相似文献   

16.
This paper investigates green supply chain decision making under different government policies. The problem is explored under centralized and decentralized scenarios. We verified the advantages of simultaneous government implementation of financial and uniform manufacturing policies and found that, with increased public awareness of environmental protection, government subsidy also increases: when environmental protection awareness is sufficiently strong, the government does not have to set uniform policy. Finally, by parametric and numerical analyses, our research identified the conditions under which social welfare is maximized. The results facilitate scientific policy development and provide a reference for promoting green supply chain operations.  相似文献   

17.
The increased importance of small and medium sized enterprises (SMEs) in industrial economies is explained and the very large variance in their degree of participation in the innovation process is established. Evidence from Canadian research clarifies the difficulties that smidl and medium sized firms, even in technology intensive industries, experience in developing new products and implementing new designs. Innovation theory is reviewed and the importance of inputs from specialist consultants is established for SMEs undertaking incremental innovation. Transaction costs concepts are then used to explain the difficulties SMEs encounter in arranging these linkages. A recommended form of policy to help to correct this type of market imperfection is derived and used to describe a gap in Canadian policies and to evaluate initiatives in Australia and UK.  相似文献   

18.
Policy makers often see entrepreneurship as a panacea for inclusive growth in underdeveloped ‘Base of the Pyramid’ (BOP) regions, but it may also lead to unanticipated negative outcomes such as crime and social exclusion. Our objective is to improve the understanding of how entrepreneurship policies can lead to socially inclusive growth at the BOP. Drawing on data collected from Brazilian tourism destinations with varying entrepreneurship, innovation, and social inclusion policies, we argue that weak institutions coupled with alert entrepreneurs encourage destructive outcomes, especially if entrepreneurship policies are based solely on economic indicators. Policies addressing both economic and social perspectives may foster more productive entrepreneurial outcomes, albeit at a more constrained economic pace. The study extends the related BOP, entrepreneurship, global value chain, and sustainable tourism literatures by examining the poor as entrepreneurs, the role of local innovation, and how entrepreneurship policies generate different social impacts within poor communities.  相似文献   

19.
Integration, agglomeration and welfare   总被引:5,自引:0,他引:5  
This paper studies the social desirability of agglomeration, and the efficiency arguments for policy intervention in a simple, analytically tractable new economic geography model. The location pattern emerging as market equilibrium is ‘bubble-shaped’, i.e. it features dispersion both at high and low trade costs and stable equilibria with partial and full agglomeration for intermediate levels of trade costs. We show that the market equilibrium is characterized by over-agglomeration for high trade costs and under-agglomeration for low trade costs, and we work out analytically that a net pecuniary externality is the underlying cause of this market failure. One particularly noteworthy result is that the net pecuniary externality is positive at high levels of trade freeness. However, there is no market under-agglomeration unless this positive net pecuniary externality interacts with an additional congestion force originating in the (per se efficient) competitive housing market.  相似文献   

20.
《Technovation》1999,19(6-7):345-353
This article addresses the often overlooked S&T policy makers in the Central and Eastern European (CEE) economies and the challenges they face in transition. While still coming to grips with patterns and processes innovation under market conditions, policy makers are under pressure to resolve financial and organisational crises and to secure budgetary support. In this paper, we demonstrate how the socialist model of innovation is still shaping innovation policies in the CEE in general and with examples from individual countries. We outline three reasons for the persistence of the model: (1) that the model is embedded in these societies; (2) that the policy tools and targets associated with model remain unchallenged; and (3) that vested interests amongst policy makers and researchers encourage a continuation in policy focus. Finally, we consider how the persistence of the model may harm the long-term economic performance of the CEE and what can be done to change the mental models that underlie innovation policy making.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号