Unit roots and infrequent large shocks: new international evidence on output

The nature and magnitude of the economic shocks that have affected the per capita GDP of 16 OECD countries are analyzed over a long period using the outlier method. Strong proof of infrequent large permanent and transitory shocks were found, essentially resulting from the two major wars in the twentieth century, the recession in the 1920s, the Great Depression, among others. We also examine the nature of the output trend by combining different tests of non-stationarity on different GDP series corrected by the outliers detected. It is shown that the per capita GDP series cannot reject the unit root hypothesis in 13 of the 16 countries examined. No conclusion could be drawn for the other countries because the test results were contradictory.     

Public service and competition in the European Union

In recent years, the Treaty of the European Union and the European institutions have had a rapidly increasing impact on the reorganization of commercial public services within the Member States. The trend has been dual—toward liberalization and toward harmonization of standards and national legislations. Progress is reported and analyzed in telecommunications, rail services, and electricity. A general concern is to reconcile legitimate public service obligations with the rules of competition that are prominent in the Treaty. New forms of regulation are tested in various countries preparing for the emergence of a European regulation framework.     

Does Team-Based Compensation Give Rise to Problems When Agents Vary in Their Ability?

This paper reports the results of an experiment on how team heterogeneity in terms of productivity influences both the revenue sharing proposed by the principal to the team and the employees' performance. Experimental evidence shows that when the team is heterogeneous, the principal does not try to motivate the agents through her sharing offer. Regardless of the level of team-based compensation, a large amount of free riding occurs since each agent is mainly influenced by his teammate's behavior. In contrast, when the team is homogeneous, agents are better able to cooperate, reciprocating the principal's offer.     

Integrating ecosystem services into conservation assessments: A review

A call has been made for conservation planners to include ecosystem services into their assessments of conservation priority areas. The need to develop an integrated approach to meeting different conservation objectives and a shift in focus towards human wellbeing are some of the motivations behind this call. There is currently no widely accepted approach to planning for ecosystem services. This study contributes towards the development of this approach through a review of conservation assessments and the extent to which they include ecosystem services. Of the 476 conservation assessments identified by a set of search terms on the Web of Science, 100 were randomly selected for this review. Of these only seven had included ecosystem services, while another 13 had referred to ecosystem services as a rationale for conservation without including them in the assessment. The majority of assessments were based on biodiversity pattern data while 19 used data on ecological processes. A total of 11 of these 19 assessments used processes, which could be linked to services. Ecosystem services have witnessed an increase in attention received in conservation assessments since the year 2000, however trends were not apparent beyond this date. In order to assess which types of ecosystem services and how they have been accounted for in conservation assessments, we extended our review to include an additional nine conservation assessments which included ecosystem services. The majority included cultural ecosystem services, followed by regulatory, provisioning and supporting services respectively. We conclude with an analysis of the constraints and opportunities for the integration of ecosystem services into conservation assessments and highlight the urgent need for an appropriate framework for planning for ecosystem services.     

Preponderance of evidence

This paper investigates the incentive properties of the standard of proof for a finding of negligence when evidence about injurers’ behavior is imperfect. We show that a “more-likely-than-not” decision rule provides maximal incentives for potential tort-feasors to exert care. An injurer is then held liable whenever inadequate care appears more likely than due care, and not liable otherwise. Our analysis provides a deterrence rationale for the exclusionary rules of evidence found in common law and the preponderance of evidence standard of proof.     

Educational Development and Labour Markets

For over a century and a half, there have been cyclical phases ofsaturation and shortage in the numbers of students enrolled at German and Prussian universities. Starting from thisobservations, this article constructs a neoclassical glutting theory. A two-fold hypothesis is put forward. Firstly,the behaviour of students in their choice of curriculum depends on the expected rewards. Indeed, the allocation of studentsto the various faculties depends on the comparative yields of the latter in terms of expected earnings and job availabilityin the corresponding professional sectors. Thus, the rewards expected by a student are represented by the earnings on thelabour market at a given moment and that he or she considers to be sustainable in time. Secondly, an attraction phenomenonmay appear for certain curricula when a shortage occurs in different professional sectors. Once the shortagehas been made up, the demand effect continues as a result of delay in the perception of the situation by young people.This may gradually lead to comparative over-production of qualifieduniversity leavers. This unbalanced situation diverts new cohorts ofstudents to other sectors ofeducation and may cause a new shortage, finally resulting in acyclical movement modulated according to job availability.     

Does accessibility to local public employment agencies matter? Answers from a French quasi-experiment

We question whether accessibility to local public employment agencies impacts exits from unemployment. We deal with the potential endogeneity of the residential location of jobseekers by using the unanticipated creation of a new agency in the French region of Lyon as a quasi-natural experiment. We use exhaustive and geo-located individual data on jobseekers and local public employment agencies. Contrary to past evidence based on aggregated data, we find no evidence that jobseekers with improved accessibility to the local public employment services experience an improvement of their probability of exiting unemployment. We however find evidence of transitory organizational effects. These findings strongly question the costly strategy of a fine distribution of local public employment agencies across the territory while suggesting that institutional issues are key.     

Exploring purchasing integration in product development

With increasing outsourcing and the growing importance of product innovation as a means for creating competitive advantage, the integration of purchasing and product development processes has become a key issue for many firms. Although, consequently, the integration of purchasing and suppliers in product development has attracted growing attention from practitioners and researchers, most research on the topic remains limited to the context of single development projects. The integration with long-term issues such as technological alignment between supplier and manufacturer is often neglected. This limited conception and the lack of a coherent definition of what purchasing integration in product involvement is form a major impediment to the advancement of knowledge in this field. Therefore, this article develops a framework encompassing various activities across different management levels, which embody the alignment and integration of purchasing and product development processes.     

Replicating portfolio approach to capital calculation

The replicating portfolio (RP) approach to the calculation of capital for life insurance portfolios is an industry standard. The RP is obtained from projecting the terminal loss of discounted asset–liability cash flows on a set of factors generated by a family of financial instruments that can be efficiently simulated. We provide the mathematical foundations and a novel dynamic and path-dependent RP approach for real-world and risk-neutral sampling. We show that our RP approach yields asymptotically consistent capital estimators if the chaotic representation property holds. We illustrate the tractability of the RP approach by three numerical examples.