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Students of comparative politics have highlighted different styles of regulation in the U.S. and Europe. These differences also apply to consumer policy and its different models of governance. The paper holds that governance is a key variable but adds aspects of issue framing. Two examples of consumer policy are analysed: regulation of genetically modified organisms and tobacco control. The case studies show that features of governance such as adversarial legalism or the precautionary principle are not necessarily linked to distinctive styles of regulation. Instead they vary across policy fields. Only a mix of governance elements and framing opportunities for interest groups can explain output and new directions of consumer policy. Dilemmas of collective action appear to be shrinking for consumers because framing trumps mobilization of members. 相似文献
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This paper outlines a framework for a vintage type analysis of structural change in production systems. By focusing on the existing industrial establishments in a region, rigidities are described with regard to (i) production techniques and input requirements, (ii) the semi-fixed location of the labour force and its specific set of production skills, (iii) the existing patterns of intersectoral deliveries. A scenario technique, utilizing programming models, is suggested as a method to study the effects on structural change of such rigidities. 相似文献
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Intraday volatility measures have recently become the norm in risk measurement and forecasting. This article empirically investigates the unbiasedness of three of these measures over four different datasets. We find that the three measures are significantly biased and that the bias can have either sign. 相似文献
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The mutual fund theorem (MFT) is considered in a general semimartingale financial market S with a finite time horizon T, where agents maximize expected utility of terminal wealth. The main results are:
Financial support from the Austrian Science Fund (FWF) under the grant P19456, from Vienna Science and Technology Fund (WWTF)
under Grant MA13 and by the Christian Doppler Research Association (CDG) is gratefully acknowledged by the first author. The
research of the second author was partially supported by the National Science Foundation under Grant DMS-0604643. 相似文献
(i) | Let N be the wealth process of the numéraire portfolio (i.e., the optimal portfolio for the log utility). If any path-independent option with maturity T written on the numéraire portfolio can be replicated by trading only in N and the risk-free asset, then the MFT holds true for general utility functions, and the numéraire portfolio may serve as mutual fund. This generalizes Merton’s classical result on Black–Merton–Scholes markets as well as the work of Chamberlain in the framework of Brownian filtrations (Chamberlain in Econometrica 56:1283–1300, 1988). Conversely, under a supplementary weak completeness assumption, we show that the validity of the MFT for general utility functions implies the replicability property for options on the numéraire portfolio described above. |
(ii) | If for a given class of utility functions (i.e., investors) the MFT holds true in all complete Brownian financial markets S, then all investors use the same utility function U, which must be of HARA type. This is a result in the spirit of the classical work by Cass and Stiglitz. |
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Gabriel-Eduard Vîlcu 《Applied economics letters》2018,25(2):106-110
In Appl. Econ. Lett. 18 (2011), 1777–1784, as a natural generalization of some famous production models with two inputs, C.A. Ioan and G. Ioan introduced a new class of production functions with constant return to scale, called sum production function, and proved three theorems of characterization for such production models. In this article, we give new and more simple proofs of these theorems, extending also the results to the case of increased/decreased return to scale. The generalization to the case of an arbitrary number of inputs is also discussed. 相似文献
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Judith Möllers Diana Traikova Brînduşa Ana-Maria Bîrhală Axel Wolz 《Post - Communist Economies》2018,30(1):56-77
After the breakdown of the communist regime in Romania, collective farms were replaced by a large number of small-scale private farms. Although cooperation seems to be a favourable choice for these smallholders, it did not develop as perhaps expected. This article explores the factors that determine the formation of the intention of Romanian vegetable farmers to join marketing cooperatives in the form of so called producer groups. Our theoretical framework refers to Ajzen’s Theory of Planned Behaviour, which we model with a structural equation model. We identified as main intention drivers the expectation for better prices and easier access to capital. Perceived family support is another significant factor. The level of distrust is high. Although our trust variable is not significant as a predictor of the intention to cooperate in the model, we find qualitative indications that trust plays a role when the intention is translated into actual behaviour. 相似文献
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This paper examines data from the Norwegian television game show Joker, where contestants make well-specified choices under risk. The game involves very large stakes, randomly drawn contestants,
and ample opportunities for learning. Central models of risk choice, including expected utility theory, give a simple prediction
of choice under weak conditions, as one decision is always first-order stochastically dominating. We document frequent, systematic
and costly violations of dominance. Many contestants appear to have a systematic expectation bias that can be related to Tversky
and Kahneman’s (Cogn. Psychol. 5(2):207–232, 1973) “availability heuristic”. In addition, contestants seem to make systematic calculation errors that are well captured by
the so-called Fechner model. 相似文献