Dynamic Spanning in the Consumption-Based Capital Asset Pricing Model

Under the assumptions of the Consumption-based Capital Asset Pricing Model (CCAPM), Pareto optimal consumption allocations are characterized by each agent's consumption process being adapted to the filtration generated by the aggregate consumption process of the economy. The wealth processes of the agents, however, are adapted to the finer filtration generated by aggregate consumption and the conditional distribution of future aggregate consumption. Therefore, in order to achieve Pareto optimal consumption allocations, a sufficiently varied set of assets must exist such that any wealth process adapted to this finer filtration can be implemented by dynamically trading in that set of assets. We provide sufficient conditions for the existence of such a set of assets based on dynamically trading contingent claims on aggregate consumption. In addition, we give sufficient conditions for the existence of equilibria in a dynamically effectively complete market in which agents are only able to trade in contingent claims on aggregate consumption, the market portfolio of firms, and a (numeraire) zero-coupon bond. We demonstrate the role of short- and long-term contingent claims on aggregate consumption for the implementation of Pareto optimal allocations in the presence of short- andlong-term risks. In addition, in the presence of personal risks, we demonstrate the role of insurance contracts.     

Allocation of track capacity: Experimental evidence on the use of priority auctioning in the railway industry

Allocation of track capacity concerns multiple users facing demand indivisibilities, running trains over an inelastic supply of railway tracks. The paper suggests a Vickrey-type mechanism to handle incentive aspects of this technically complex optimisation task. Here, the price for operating a train will correspond to the bids foregone by other operators who are pushed off their preferred routes. The paper reports the results of 11 experimental markets using variations of this mechanism where each market includes up to 10 trading periods, and subjects bid for routes over a highly stylised railway network. The experiments generated solutions that capture 90–100% of potential benefits.     

Project‐as‐practice: In search of project management research that matters

Research on projects is not only an immature field of research, but it is also insubstantial when it comes to understanding what occurs in projects. This article contributes to making project management research matter to the academic as well as to the practitioner by developing a project‐as‐practice approach, in alignment with the ongoing debate in social science research. The article outlines a framework and argues that there are two major challenges to the researcher and also suggests how these challenges can be met. Underlying notions of the practice approach are outlined to ensure a development of the project‐as‐practice approach that makes project management research matter!     

A structural model for early exit of older men in Belgium

In this article, we propose a structural model of the retirement decision for older workers in Belgium. We model the exit paths available through the various available schemes. Our framework allows exploiting all information on possible exit paths and also better identifying preferences and constraints. Results based upon Belgian microsimulation data from 2001 for private sector workers fits rather well-observed behavior. Simulations of hypothetical reforms illustrate the potential effects of changing social security rules.     

20 YEARS AFTER: THE FALL AND RISE OF SOCIALISM IN EAST GERMANY

Twenty years after the fall of the Berlin Wall, public opinion in East Germany is dominated by a deep hostility towards free markets and an uncritical attitude towards state intervention. This article argues that the mistakes that have been made in the economic transformation of East Germany continue to have an effect to this day. Supporters of the free economy failed to explain why the grievances people faced were not caused by allegedly 'unbridled' markets, but by false policies. Hopefully, a future reunified Korea will avoid repeating these mistakes.     

Optimal development budgets tied to the marketing mix

The purpose of this paper is to forge a link between optimal levels of the three principal marketing mix instruments—price, promotion and product quality—and the development expenditures devoted to the quality improvement of a firm's existing product. Using the latest operational marketing mix model which prescribes quantitatively what the optimal quality of a brand should be, a simple function relating this optimal quality to desirable development outlays is suggested and some of its implications are explored.     

MEASURING THE STOCK OF CONSUMER DURABLES AND ITS IMPLICATIONS FOR EURO AREA SAVINGS RATIOS

The purpose of this article is to estimate the impact of capitalizing durable goods on the euro area household saving ratios and disposable incomes for the first time. The reason for this exercise is twofold. Firstly, it is generally accepted that individual households regard consumer durables as assets even though they are not treated as such in the System of National Accounts 1993 . Secondly, the issue is related to the definition of household saving ratios. For instance, the U.S. Federal Reserve Board publishes three household saving measures. The main difference between these saving ratios is that one is derived by treating expenditure on consumer durables as investments while the other two are compiled by considering them to be household final consumption expenditure. We find that the effect of capitalizing consumer durables on EA saving ratios is moderate. The impact is lower than it is in the U.S.     

Crossing East-West boundaries: Knowledge sharing in intercultural business networks

Strategic business nets are becoming increasingly important in the arena of global competition. This article examines the influence of ethnic culture on knowledge sharing in different types of intercultural business nets. Knowledge sharing is essential for the functioning of business networks as it influences the cooperation and outcomes that firms are able to achieve. Our basic assumption is that the nature of the cultures involved and the type of network both influence the knowledge-sharing barriers. This is investigated on the basis of two conceptual frameworks. The first is a framework identifying different types of strategic nets and the requirements they impose for knowledge sharing. Subsequently, a culture-classification scheme based on the individualism-collectivism and the vertical-horizontal dimensions is derived. The strategic net and cultural types are then combined in an intercultural business-net framework, and the opportunities for and barriers to knowledge sharing are analysed using examples representing Asian-European and Asian-North American joint ventures and networks.     

Transport biofuels in the European Union: The state of play

The implementation of the Biofuels Directive (2003/30/EC) in 25 member states is assessed here. Implementation problems are identified and analysed for the purpose of suggesting a way forward for biofuels policy in the European Union. Three main patterns are observed: effective implementation, formal compliance and weak implementation. Problems encountered in the policy process are both of a practical and more fundamental nature, i.e., due to a lack of consensus on the priority of competing policy objectives and disagreement on the suitability of first-generation biofuels for reaching the objectives. In this situation, stronger enforcement of targets does not appear to be a constructive way forward. Based on our analysis, we argue that the European Union should instead, and in agreement with the principle of subsidiarity, allow member states more flexibility.     

Rise of strategic nets — New modes of value creation

This paper focuses on the type and management of intentionally created business networks called nets. Nets are extensively being used to achieve a variety of benefits over those of a single firm or market transaction. We propose that the effective management of different types of business net is dependent on their underlying value creation logic. Based on this notion a value creation framework of three generic net types - ‘current business nets’, ‘business renewal nets’, and ‘emerging new business nets’ - is suggested. We argue that they pose widely different conditions and requirements for net management. The management mechanisms of these basic net types are then identified and discussed. We contend that the proposed contingency framework captures the complexity and variety of the expanding strategic business nets in a more valid way than the extant classifications of network organizations. The paper contributes to the emerging theory of network management.