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Push- vs. Pull-Concepts in Logistics Chains

The widespread terms "push" and "pull" are commonly used to characterise particular concepts ofsysem configuration and coordination. However, many publications present push and pull concepts in a confusing way. As there is no common sense of what these terms really mean and how they should be used, it is difficult to avoid inconsistency in the scientific...

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English / 08/05/1998

Getting Out of Debt: Attachment of wage in whose interest?

Attachment of wage as a way for creditors to enforce payment by unwilling or insolvent debtors is not very successful in several countries. Based on a dynamic model of debtor behaviour, this paper explores two alternatives of reform. One is to reduce the rate of attachment, which at present amounts to 100 percent of the wage income exceeding the subsistence level, thus probably...

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English / 01/04/1998

Posterior simulation and Bayes factors in panel count data models

This paper is concerned with the problems of posterior simulation and model choice for Poisson panel data models with multiple random effects. Efficient algorithms based on Markov chain Monte Carlo methods for sampling the posterior distribution are developed. A new parameterization of the random effects and fixed effects is proposed and compared with a parameterization in common use...

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English / 01/01/1998

Long-term care insurance in a two-generation model

The purpose of this contribution is to investigate why private insurance of the risk of long-term care (LTC) has known little market success in major industrialized countries, even among the relatively well-to-do. Using a principal-agent framework, it shows that the purchase of LTC insurance by the parent (the principal) is likely to diminish the amount of LTC provided by the major...

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English / 01/01/1998

Health benefits at work - A review of Mark V. Pauly's, Health benefits at work. An economic and political analysis of employment-based health insurance

Reviews the book `Health Benefits at Work. An Economic and Political Analysis of Employment-Based Health Insurance,' by Mark V. Pauly.

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English / 01/01/1998

Managed care in Germany and Switzerland

The point of departure for this contribution is a problem common to all Western healthcare systems, namely the deficiency of their basic building block, the physician-patient relationship. This deficiency opens up a market for complementary agents in healthcare, ranging from medical associations to the central government. While Germany has traditionally put the emphasis on medical...

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English / 01/01/1998

The economic benefits of schooling in New Zealand: comment and update

In this paper, I discuss the interpretation of qualification related income differentials from income functions that control for age rather than the theoretically more appropriate variable years of labour market experience. I reestimate income functions for New Zealand that were originally reported by Maani (1997) with changed specification, and I update her results by also...

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English / 01/01/1998

The microeconomics of transformation and growth

This groundbreaking book discusses the significance of a microeconomic approach to the transformation process in Eastern Europe from a theoretical and empirical perspective. It reveals that microeconomic conditions constitute the framework for the successful restructuring and recovery of the post-socialist countries in Europe.

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English / 01/01/1998

A survey of theories for mobile agents

This paper presents a comparative survey of formalisms related to mobile agents. It describes the π-calculus and its extensions, the Ambient calculus, Petri nets, Actors, and the family of generative communication languages. Each of these formalisms defines a mathematical framework that can be used to reason about mobile code; they vary greatly in their expressiveness, in the...

Institution partenaire

Université de Genève

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English / 01/01/1998

Languages and Tools to Specify Hypertext Views on Databases

We present a declarative language for the construction of hypertext views on databases. The language is based on an object-oriented data model and a simple hypertext model with reference and inclusion links. A hypertext view specification consists in a collection of parameterized node schemes which specify how to construct node and link instances from the database contents. We show...

Institution partenaire

Université de Genève

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English / 01/01/1998

Formal development of Java based Web parallel applications

The Java object oriented programming language has been the subject of an important involvement from programmers and the industry. Especially for applications related to the Web. The problem of such a rapid penetration of Java programs into commercial products is that software engineers do not have any methodology and have to develop complex parallel applications. We present a formal...

Institution partenaire

Université de Genève

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English / 01/01/1998

Using object-oriented algebraic nets for the reverse engineering of Java programs: a case study

The problem addressed in this paper is the following: how to use high-level Petri nets for the reverse engineering of implemented distributed applications. The paper presents a reverse engineering methodology applied on a real (simple) Java applet based client/server application. First, starting from the Java program, several abstraction steps are described using the CO-OPN/2 formal...

Institution partenaire

Université de Genève

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English / 01/01/1998

COALA - A Formal Language for Coordinated Atomic Actions

A Coordianted Atomic Action (CA Action) is a unified scheme for coordinating complex concurrent activities and supporting error recovery between multiple interacting objects in distributed object-oriented systems. They constitute a very interesting concept for the structured developement of fault-tolerant distributed applications. To formalize the design of CA actions, this paper...

Institution partenaire

Université de Genève

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English / 01/01/1998

Formal Development and Validation of the DSGamma System Based on CO-OPN/2 and Coordinated Atomic Actions

The rapid expansion of Java programs into software market is often not supported by a proper development methodology. Here, we present a formal development methodology well-suited for Java dependable distributed applications. It is based on the stepwise refinement of model-oriented formal specifications, and enables validation of the obtained system wrt the client's requirements...

Institution partenaire

Université de Genève

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English / 01/01/1998

CO-OPN/2 Specification of the DSGamma System Designed Using Co-ordinated Atomic Actions

The objective of this paper are twofold. On the one hand, it sims to show the advantages of Co-ordinated Atomic actions (CA actions) as a design concept for dependable distributed system development, and on the other hand, it explains how the formal language CO-OPN/2 can be used to express the semantics of CA action design. A fault-tolerant distributed application is developed...

Institution partenaire

Université de Genève

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English / 01/01/1998

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