Introducing Time‐to‐Educate in a Job‐Search Model

Transition patterns from school to work differ considerably across OECD countries. Some countries exhibit high youth unemployment rates, which can be considered an indicator of the difficulty facing young people trying to integrate into the labour market. At the same time, education is a time‐consuming process, and enrolment and dropout decisions depend on expected duration of studies as well as on job prospects with and without completed degrees. One way to model entry into the labour market is by means of job‐search models, where the job arrival hazard is a key parameter in capturing the ease or difficulty in finding a job. Standard models of job search and education assume that skills can be upgraded instantaneously (and mostly in the form of on‐the‐job training) at a fixed cost. This paper models education as a time‐consuming process, a concept which we call time‐to‐educate, during which an individual faces the trade‐off between continuing education and taking up a job.     

Advertising as special service provision under non-price vertical restraints: exclusive territories in beer distribution

This article presents statistical evidence which supports Lester Telser's 1960 hypothesis, that when vertical restraints are made illegal, intrabrand competition results which diminishes the provision of point-of-sale, special services. This results because of the public goods problem exhibited by the special services. Increased special service provision by the national manufacturer must then substitute for the special service provision left unfilled by the wholesaler. Evidence relating to the efficacy of such substitution is also presented.     

Partial Communication in a Voluntary‐Contribution‐Mechanism Experiment

This paper presents results of a voluntary‐contribution‐mechanism experiment with partial communication. It was found that the trend of mean investments depended on whether a communication network was connected and on how fast all subjects could share information. When each subject could communicate with two other subjects and the network was connected, the mean investment increased from 33 percent to 58 percent of the optimal investment. On the other hand, when each subject could communicate with only one other subject and the network was not connected, the mean investment decreased from 34 percent to 19 percent of the optimal investment.     

A Note on the Most‐Favoured‐Customer Pricing Policy

This paper extends the retroactive most-favoured-customer pricing policy examined by Cooper (1986). He showed that the policy enabled both firms in a duopoly to offer higher prices and to enjoy higher profits. This paper introduces a variable into the most-favoured-customer pricing policy. Then, it shows that there is an equilibrium in which the duopolists can further increase their profits.     

A Simple Characterization of the Second‐best Two‐part and Block‐rate Tariffs Theory and Applications

The general necessary optimality conditions for second‐best discrete multipart tariffs are rather complex. In this paper, we derive a simplified characterization of these conditions for two‐part tariffs and for block‐rate tariffs for given thresholds of these tariffs. The simplified necessary optimality conditions are equivalent to the necessary conditions for a Ramsey‐optimum for goods with continuously variable individually demanded quantities. We demonstrate that this characterization of second‐best multipart tariffs can be helpful, when applying the usual regulatory mechanisms to these tariffs. In particular, we consider Vogelsang–Finsinger (1979) regulation as well as a particular form of price‐cap regulation which is related to the Laspeyres index of prices.     

Welfare Implications of Non‐scale R&D‐based Growth Models

Non‐scale R&D‐based growth models imply that the decentral and the socially optimal long‐run growth rate coincide. Nonetheless, the distortions inherent in a market economy bias both the R&D investment share and the saving rate. As a result, the level of the balanced growth path may differ substantially between the two types of solution, implying a dramatic loss in welfare. The present paper explores the sources and magnitude of this gap. In addition, the consequences of public policies are examined, distinguishing between isolated policy measures from an overall policy programme.     

The CES‐‐Translog Production Function, Returns to Scale and AES

The translog functional form imposes no a priori restrictions on the substitution possibilities between the factor inputs, by relaxing the assumption of strong separability, and the CES–translog cost function specification allows for testing homothetic technology with Hicks‐neutral technical change. In this paper an n ‐factor CES–translog production function is presented which develops the parameters to directly assess scale effects from those due to technology in the production structure. In addition, by applying Shephard's lemma it was possible to derive the input demand functions, as well as the partial elasticities of substitution and the cross‐partial price elasticities of demand for a generalized CES–translog production structure.     

The adjustment of external tariffs in the Kemp‐Wan‐Grinols compensation scheme

Abstract.  This paper considers the adjustment of external tariffs when two countries integrate and implement the Kemp‐Wan‐Grinols compensation scheme. Attention is also paid to the restrictions set by Article XXIV of GATT. This paper shows how the external tariffs would change in a three‐good, three‐country model under the assumption of gross substitutability. The results are sensitive to the initial trade pattern. In particular, they depend on the number of goods initially traded between the member countries. The analysis can be extended to a multi‐commodity model if the preferences of the countries have identical CES representation. JEL classification: F11, F15     

Quasi‐geometric discounting: A closed‐form solution under the exponential utility function

This paper studies a discrete‐time utility maximization problem of an infinitely‐lived quasi‐geometric consumer whose labour income is subject to uninsurable idiosyncratic productivity shocks. We restrict attention to a first‐order Markov recursive solution. We show that under the assumption of the exponential utility function, the problem of the quasi‐geometric consumer admits a closed‐form solution.     

The Impact of the Rating Agencies' Through‐the‐cycle Methodology on Rating Dynamics

Surveys on the use of agency credit ratings reveal that some investors believe that credit‐rating agencies are relatively slow in adjusting their ratings. A well‐accepted explanation for this perception on rating timeliness is the through‐the‐cycle methodology that agencies use. Through‐the‐cycle ratings are intended to measure default risk over long investment horizons and to respond only to changes in the permanent component of credit quality. A second aspect of the through‐the‐cycle methodology is the prudent migration policy. In a benchmark study with a financial ratio‐based credit‐scoring models – an agency‐rating prediction model and default‐prediction models with various time horizons – we confirm the exclusive focus of agencies on the permanent component of credit quality and we model and quantify the agencies' prudent migration policy. A rating migration is triggered only when the rating predicted by the agency‐rating prediction model differs by at least a threshold level of 1.8 notch steps from the actual agency rating. If triggered, ratings are only partly adjusted by 70 per cent at the downside and 60 per cent at the upside. From a 1‐year point‐in‐time perspective, weighting temporary fluctuations in credit quality, the through‐the‐cycle methodology lowers the rating‐migration probability by a factor of 3.5. Both aspects of the through‐the‐cycle methodology contribute equally to this factor. The partial adjustment of ratings lowers the rating‐reversal probabilities on short term and introduces rating drift, the known serial correlation in agency‐rating migrations.     

Games in Dynamic‐Epistemic Logic

The author discusses games of both perfect and imperfect information at two levels of structural detail: players' local actions, and their global powers for determining outcomes of the game. Matching logical languages are proposed for both. In particular, at the 'action level', imperfect information games naturally model a combined 'dynamic‐epistemic language'– and correspondences are found between special axioms in this language and particular modes of playing games with their information dynamics. At the 'outcome level', the paper presents suitable notions of game equivalence, and some simple representation results.     

Governance and Management of Collective User‐Based Enterprises: Value‐Creation Strategies and Organizational Configurations

Abstract The evolution of the collective enterprise may be conceptualized in three phases throwing into relief five strategies for the creation of value. The first corresponds to the emergence of a collective enterprise, an innovation in itself. The second, the spread of the innovation by replication, is linked to federalization and to the beginning of standardization. The tension between innovation and standardization begin to make a difference as early as this replication phase, but later it becomes more critical. It forces the collective enterprise to avoid wholesale standardization, an outmoded option, and instead allows space for considering one of the two strategies for the creation of value in keeping both with its distinctive social economy identity and with the new strategic approaches centred on the competences of the enterprise and the creation of value for the user. Thus, the collective user enterprise may move forward by focusing, i.e., by even greater innovation in its provision for a target group of members. The collective enterprise may also progress by hybridization, i.e., through re‐combining in a better way the innovation and standardization required to respond, effectively and efficiently, to a group of owners that is not only very large, but also highly diversified. The authors identify the organizational configuration for each pattern of value‐creation by concentrating on governance structures and the role of managers .     

网络口碑诉求方式和传播方向对消费者购买意愿的影响

通过对400位有网络购物经验的高校学生进行实验研究,采用2×2组间因子设计,运用描述性统计分析、方差分析方法,验证了不同的网络口碑诉求方式和网络口碑传播方向对消费者购买意愿的影响机理。结果表明:在社交网站中,感性诉求方式的网络口碑信息的效果优于理性诉求方式;正向的网络口碑信息对消费者的购买意愿具有积极的推动作用。     

Parallelism in the Lab and the Field: Testing Robustness of the Minimum‐Contributing‐Set Mechanism

Efforts to "test" public‐goods provision mechanisms in field settings encounter a fundamental obstacle: investigators cannot determine whether the aggregate valuation of the public good exceeds the cost. Experimental laboratory settings can fix the provision of the public good to be efficient. This allows investigation of the performance of the mechanism under potential field settings. This paper reports the results of a set of laboratory experiments designed to test the robustness of the minimum‐contributing‐set (MCS) mechanism to field conditions. The reported results support further use and investigation of the MCS mechanism for the provision of step‐level public goods.     

Liquidity Effects in Non‐Ricardian Economies

It has often been found difficult to generate a liquidity effect (i.e., a negative effect of monetary injections on the nominal interest rate) in the traditional “Ricardian” stochastic dynamic model with a single infinitely lived household. We show that moving to a non‐Ricardian environment where new agents enter the economy in each period allows such a liquidity effect to be generated.     

Hours Constraints and In‐Work Poverty

We develop a new approach to modelling the impact of personal characteristics on the extent of poverty, using propensity score matching methods. This is used to evaluate the contribution of hours constraints to poverty, as revealed in UK and US datasets. The results reveal a significant difference, consistent with the existence of greater labour market flexibility in the US.     

Government Underpricing of Share‐Issue Privatizations

Abstract *** :  The purposes of the paper are to determine whether governments underprice shares in fixed‐price share‐issue privatizations (SIPs) and, if so, what their motivations are for doing so. This paper develops three models of SIP underpricing: one based on revenue goals, one based on political goals and an inclusive model which supposes that the level of underpricing depends on both government revenue goals and political goals. These models are estimated using an international sample of 104 SIPs from 25 countries. We find that, on average, SIPs are underpriced by approximately the same amount as private sector initial public offerings (IPOs). This is not consistent with the sole goal of revenue maximization because SIPs should not require the same degree of underpricing as IPOs. The inclusive regression fits the data well and indicates that both revenue and political goals affect the level of SIP underpricing .     

Church‐based Credit Cooperatives in Germany

Abstract The traditional business focus of credit co‐operatives is locally oriented and business success is explained by the efficient way to induce monitoring of borrowers. Church‐based credit co‐operatives in Germany are not that locally oriented but were extraordinary successful over the last decades. First, this analysis describes the special characteristics of church‐based institutions compared to other credit co‐operatives. This part is based on a historical backward glance, an analysis of annual reports and a survey on their business policy. Second, we discuss the special characteristics of church‐based credit co‐operatives to explain the business success in a broader context and to understand the perspectives of credit co‐operative banking beyond the local orientation.     

The Co‐initial Swap Market Model

In this paper, we introduce a novel approach to the pricing and the risk management of generic European style interest‐rate derivatives. This new model has great flexibility and has the advantage of avoiding complex model calibration techniques typical of standard short‐rate models. Dynamics is assigned on a set of co‐initial forward swap rates, and arbitrage‐free restrictions are determined in a normal and lognormal setup. Model implementation and calibration are discussed, and details of two example applications are also presented.
(J.E.L.: G12, G13).