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1.
This paper is concerned with the way technological expectations are generated, articulated and deployed in processes of large-scale socio-technical change. We argue that expectations are intrinsic to all social action, so that visions of the future are both ubiquitous and context-specific. Agents will act in relation to private visions of the future that are complexly related to shared or collective visions. Characteristic features and forms of visions as they relate to socio-technical regimes are identified, and the specific roles visions play in the context of actor networks engaged in processes of systems innovation are discussed. Visions are seen as 'bids' that are deployed by actors in processes of coalition-formation and coordination. Examples from a range of visions of more sustainable systems are used to illustrate the main arguments. The paper ends by discussing the normative features of socio-technical expectations.  相似文献   

2.
Attention is focused upon the adoption (demand) rather than the creation (supply) of new technology, which improves from time to time. Based on the expected flow of technological progress over which the firm (demander) has no control, it must decide either to adopt the current best available technology or to postpone adoption. The distinguishing features of the model are that more than one technological innovation is anticipated and expectations about the likelihood of such innovations are revised as time passes since the last innovation. Our analysis shows that the firm will adopt the current best practice if its technological lag exceeds a certain threshold; moreover, as time passes without new technological advances it may become profitable to purchase a technology that has been available even though it was not profitable to do so in the past.  相似文献   

3.
We examine how a remedial education programme for primary school‐age children affects parental expectations about their children's future. Using original survey data we collected in Serbia, we investigate whether expectations on labour market prospects and educational attainment change as a consequence of exposure to the Roma Teaching Assistant programme. Our results show that parents of pupils in treated schools expect higher returns to education for their children and are more likely to expect them to achieve a secondary level of education. We also investigate the possible mechanisms in place due to the characteristics of the programme: remedial education and role model.  相似文献   

4.
Transitions, or socio-technological transformations, towards sustainability can be considered as a long-term transformation at the level of society as a whole, which in turn consists of a sequence of short-term innovations. The direction and speed of transitions are largely determined by the collective innovation decisions of various actors. A crucial characteristic of transitions is that they involve many uncertainties. The uncertainties that actors perceive greatly influence their innovation decisions. Namely, perceived uncertainties might stimulate some actors to fulfill certain key activities that are crucial for achieving a transition, while blocking other actors from undertaking these activities. In order to understand and manage transitions, insight into the types of perceived uncertainties that dominate the innovation decisions is essential. Furthermore, we need to understand if perceived uncertainties block or stimulate transitions by analyzing how actors respond to perceived uncertainties.This article focuses on the first transition phase: the pre-development phase. An interesting case to study the role of uncertainties in this phase is the introduction of micro-CHP in the Netherlands. The main questions of this article are: Which types of perceived uncertainties are dominant for the innovation decisions related to micro-CHP in the Netherlands? How do actors react to the perceived uncertainties?The case results demonstrate that different types of uncertainties influence the innovation decisions of the involved actors. The most dominant sources of uncertainty are technological and political uncertainty. Furthermore, the case shows that responses to uncertainty vary largely between various types of actors. Perceived uncertainties seem to block some actors, but induce other actors in fulfilling key activities that are essential for achieving a transition. We discuss how these insights can be used for improving policy for stimulating transitions.  相似文献   

5.
The aggregated expectations hypothesis, described here in full for the first time, offers a new way of examining likely future outcomes based upon the most important contributor—expectations—to the individual decisions which aggregate to create these final macro-outcomes. It also offers more powerful actors, especially governments, a new tool for influencing some of those future outcomes. The core concept is that the future outcome of an issue, economic or political, will be largely determined by the expectations of those in the population affected whose aggregated individual decisions will shape that outcome.  相似文献   

6.
Innovation is characterized by uncertainties, high risks, large investments and late returns on investment which make it a complex process. This is particularly true for sustainable innovation where market forces alone cannot be relied upon to realize the desired transitions. Insight in the dynamics of such innovation processes is necessary in order to influence technological change toward a more sustainable direction. However, few instruments and indicators are available to assess the performance of emerging technological innovation systems. In this phase competition often takes place based on expectations rather than on technological performance. This paper therefore focuses on the expectation patterns of technological innovation systems in the exploratory phase through the analysis of the expectation dynamics of three emerging technologies in the field of sustainable mobility within the Netherlands: biofuels, hydrogen as a transport fuel and natural gas as a transport fuel. These technologies do not only compete with the current fossil-fuel based system but also with each other. We have collected over 5000 expectation events regarding these technologies for the period 2000–2008 and discuss the insights generated by the comparison of the observed expectation dynamics to theoretical patterns.  相似文献   

7.
This essay expands on existing studies of M2 money demand. It differs in that it applies a rational expectations approach to an adaptive expectation model. Unlike the adaptive expectations models, the author includes an explanatory variable for expectations of future inflation. The expectation variables used are: the actual inflation rate (t + 1) and the Livingston Survey from the Philadelphia Fed. By using the different measures of expectations the author is able to compare several adaptive expectations models that appear in the literature and the rational expectations models for fit and forecast ability. The empirical results are such that the importance of including the rational expectations variable is evident even though the overall fit of the equation is comparable to one of the existing adaptive expectations models.  相似文献   

8.
We present a growth model of international trade in which expectations about profitability and growth influence innovation and investment. Adaptive learning dynamics determine transition paths for countries with differing structural parameters. Countries limiting trade by tariffs on imports of capital goods can experience gains in growth and perceived utility for a finite time, whereas the rest of the world is adversely affected. Asymmetric gains persist longer when structural advantages of the country applying tariffs are larger. Substantial differences in levels of innovation, output and utility can appear within our asymmetric country setting.  相似文献   

9.
Technological development is often described as an evolutionary process of variation, selection and retention. Different technologies are seen as variations, while the market and other institutions operate as a selection environment. It is less understood, however, how variation and selection relate in the case of emerging technologies. In this paper we introduce the concept of arenas of expectations to examine the relationship between variation and selection processes. Expectations are of particular interest in a pre-market phase of innovation, when performance, cost and other market criteria are less articulated and not stable. In arenas of expectations ‘enactors’ of particular technological variations voice and maintain expectations, while ‘selectors’ will compare and assess the competing claims. We analyse the expectations work of both parties in a case study on metal hydrides for the on-board storage of hydrogen for automotive applications. The paper concludes with a framework of ‘arenas of expectations’ as the linchpin between the processes of variation and selection of emerging technologies.  相似文献   

10.
We describe a simple iterative method for solving large dynamic CGE models under rational expectations. Details are given for Australia's MONASH model but the approach applies to a wide range of CGE models. The method is automated in the RunMONASH Windows software, putting CGE modelling under rational expectations within the reach of non-specialist modellers. We provide an illustrative application in which MONASH results under rational expectations are compared with results under static expectations. The application and supporting software can be downloaded. Results from the application are interpreted in terms of elementary economic mechanisms.  相似文献   

11.
Expectations held by different actor groups are of key importance for the shaping of socio-technical transformation processes. Foresight activities may be interpreted as a means to elicit, aggregate, modulate and contextualize expectations held by different actors. The paper proposes a conceptual framework that allows assessing and reflecting expectations in foresight initiatives that focus on sustainable sector transformations. For this purpose it draws on the recent literature on socio-technical system transformations and social expectation dynamics. The application of the framework is illustrated by experiences gained with the Sustainability Foresight method developed for the case of sustainable utility sector futures in Germany. The process was conceived as a series of participative scenario and strategy workshops involving about 120 stakeholders from the provision, use and governance of utility services.  相似文献   

12.
What is the expectation work required to ensure that technological innovation initially supported by government funding is subsequently taken up by market actors? This paper explores this question by applying a linked ecologies framework to the study of the Copyright Hub, a digital infrastructure for Intellectual Property trading developed in the UK. We draw our analysis from a five year long study, including forty-six interviews and six weeks of participant observation. We found that expectation work in policy-led infrastructural communities entails (1) leveraging technology to reshape the position of actors in the innovation space; (2) exploiting the different temporalities of expectation work in allied ecologies and (3) mobilising ‘slow’ expectations to provide momentum to the newly arranged innovation space. Highlighting difference in temporal dynamics for the various partners involved as a ‘hinging’ factor, our analysis contributes to clarifying the complex temporal alignment of policy and innovation processes in technology projects.  相似文献   

13.
国家创新系统是一个复杂的大系统,多层次性是其主要特征。本文从演化经济学的视角出发,用动态的观点探析国家创新系统的层级结构、功能及层次之间的作用机理。认为国家创新系统不仅是一个自上而下的过程,还应当是一个自下而上的过程,并将这一过程描述为小生境中创新的产生、社会技术体制对创新的选择和社会技术地景对创新的选择三个阶段。而后分别从企业、区域与国家三个层级进一步考察新技术的产生、发展、改进和扩散的演化过程,指出层级间个人或集体行为有机联系并相互作用,使国家创新系统有效运行。最后,在分析的基础上提出国家应根据不同层次影响创新因素的特征进行有效政策定位,并给出相关的政策建议。  相似文献   

14.
This study develops models in which workers form expectations of average wages in choosing levels of effort and on-the-job search. It is assumed that information on lagged average wages is available at a low fixed cost, whilst acquiring other information requires an additional variable cost. Under reasonable conditions, workers' expectations are at least partly adaptive, and may be a mixture of rational and adaptive expectations. Microeconomic parameters determine the degree to which expectations are adaptive and the weights placed on various lags of wages. As a result of partly adaptive expectations, nominal demand shocks may have real effects.  相似文献   

15.
We prove a theorem on the existence of rational expectations general economic equilibrium when agents condition on prices as well as on private information, and maximize the expectation of a state-dependent utility function. The key to the result is a new idealization of what it means for a set of empirical distributions to support agents' expectations. This idealization depends on the notion that agents compare their expectations with continuous versions of the random empirical distributions that are generated by the workings of the economy. The existence theorem covers all strictly concave utility functions, arbitrary distributions of the state variable, and situations in which the dimension of the state variable is large relative to the number of commodities.  相似文献   

16.
This article assesses the properties of survey-based inflation expectations in Sweden. The survey in question is conducted by Prospera once every quarter and consists of respondents from businesses and labour-market organisations. The article shows that inflation expectations measured in this survey tend to be biased and inefficient forecasts of future inflation. Moreover, evaluations of forecast accuracy show that these inflation expectations are worse predictors of inflation than those of a professional forecasting institution and also typically outperformed by a simple autoregressive model. Given that the true inflation expectations are captured by the survey, our results indicate that economic agents’ expectations formation process is suboptimal.  相似文献   

17.
This study provides a new angle on the relationship between political decisions and exchange rates. We link a conventional exchange rate modeling approach to the literature on the political economy of exchange rates and studies dealing with the role of policy announcements for financial market expectations by addressing the impact of policy uncertainty on exchange rate expectations and forecast errors of professionals. Our results show that expectations are not only affected by announcements but also by the degree of uncertainty regarding the future stance of economic policy. We find that forecast errors are strongly affected by policy uncertainty compared to expectations, suggesting that the effect of uncertainty is not efficiently accounted for in market expectations. Our main findings hold for economic policy uncertainty, fiscal policy uncertainty and monetary policy uncertainty. In addition, the estimates for the Japanese yen suggest a safe haven role of the yen since higher policy uncertainty in the US results in an expected appreciation of the yen.  相似文献   

18.
The European Commission conducts an annual survey regarding planned and realized business fixed investment across various manufacturing sectors in Euroland. In this study we investigate the predictive content of survey-based expectations on investment. In addition, we empirically test the rationality of respondents both in a time series as well as in a panel context. According to our results, based on pooling the data, efficiency is rejected since expectations are biased predictors of actual outcomes. Furthermore, expectations revisions are found to be correlated with components of the information set known at the time of decision making. Finally, our results qualify regressive expectations as the mechanism that more adequately describes the formation of expectations.  相似文献   

19.
We provide evidence on the fit of the hybrid New Keynesian Phillips curve for selected Euro zone countries, the US and the UK. Instead of imposing rational expectations and estimating the Phillips curve by the Generalized Method of Moments, we use direct measures of inflation expectations from the CESifo World Economic Survey. Our main findings are as follows: (i) The use of survey data gives empirical results, which are more reliable than those obtained from the GMM approach. (ii) The purely forward-looking Phillips curve can be rejected in favor of the hybrid New Keynesian Phillips curve. (iii) The estimated coefficients on past inflation are higher when using survey expectations than when using the rational expectations GMM approach. (iv) It remains unclear whether real unit labor costs or a measure of the output gap should be used as a proxy for real marginal costs. (v) Theory-based restrictions lead to an improvement of the empirical results.  相似文献   

20.
Using tendency surveys in the manufacturing industry for nine countries, different production expectations formation mechanisms are tested. Simple expectations hypotheses are compared by conducting nested and non-nested tests, and whether other information than that based solely on past production and expectations, is taken into consideration. It is found that expectations in most cases are formed regressively and/or follow a combined regressive and adaptive process and that information other than past production and expectations, only influence the formation of current expectations weakly. Finally, the rational expectations hypothesis is weakly rejected.I am grateful to Trevor Breusch, Robert Gregory, Paul Grimes, Raja Junankar, Wolfgang Schneider, two anonymous refereces and participants at the Advanced Studies Program in Economic Policy Research Conference at Kiel Institute of World Economics, May 1989, for helpful comments and suggestions.  相似文献   

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