Can sickness absence be affected by information meetings? Evidence from a social experiment

During the last decade several empirical studies have stressed the importance of norms and social interactions for explaining sickness-absence behavior. In this context, public discussions about the intentions of the insurance, and of the rights and duties of the receivers, may be important for reducing the sickness absence. In this article, we study whether information meetings about the Swedish sickness insurance affect the length of sickness-absence spells. The study is based on experimental data on individuals with weak labor market attachments. The displacement of when the call to the meeting was sent out was randomized. Comparing the survival functions of those called immediately with those whose calls were delayed (by about 30 days) makes it possible to study whether the length of sickness absence is affected by receiving the call earlier. The result suggests that the length is reduced by, on average, 20%. In the long term (12 months later), there is no effect of the information meeting. This suggests that attendance to the information meeting does not change individuals’ long-term behavior.     

The evolution of service innovation research: a critical review and synthesis

The number of service innovation articles has increased dramatically in the past 25 years. By reviewing 128 articles published between 1986 and 2010, primarily in leading marketing and innovation journals, this study analyzes the progression of service innovation research according to topicality and perspective. The authors summarize prior research by clustering it into three evolutional phases and drawing parallels with the evolution of the wider services marketing field. Overall, the view of service innovation has evolved, from a complement of traditional product innovation to a multidimensional, all-encompassing notion that entails several functions, both within and outside the firm.     

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Ohne Zusammenfassung     

The relationship between domestic and outward foreign direct investment: The role of industry-specific effects

Previous research has been inconclusive as regards the effect of outward foreign direct investment (FDI) on domestic investments. In this article, we show that this inconclusiveness can be explained at a disaggregated level as a function of the way industries are organized. Based on a simple theoretical framework including monitoring and trade costs, we argue that a complementary relationship can be expected to prevail in vertically integrated industries, whereas a substitutionary relationship can be expected in horizontally organized production. The empirical analysis confirms a significant difference between the two categories of industry as regards the impact of outward FDI on domestic investment. The results may thus have profound policy implications. JEL no. F12, F21, F23, G34.     

Internet service provision and content services: paid peering and competition between internet providers

We consider the relationship of Internet service providers (ISP) and content service providers (CP) in the Internet ecosystem. Currently, the position of ISPs is challenged by the emergence of powerful content service providers, especially with the spreading of bandwidth-demanding video services. The further investment in the network capacity may be hindered by prevailing business models that largely exclude the ISPs from sharing in the major cash flows resulting from content provision. We develop modeling tools for evaluation of business models of ISPs and present results of an analysis of two models with the potential for the generation of additional cash flows for ISP: paid content peering and service differentiation. Firstly, we show that under certain conditions on the cost structure and the level of demand elasticity and uncertainty, it can be profitable for a powerful content provider to resort to paid content peering, thus transferring to the ISP a part of his content provision revenue. The resulting business model may provide substantial benefits to all major participants in this ecosystem: network providers, content and service providers and end users. After this we consider competition in the Internet provision sector and show that - also in this case - the paid content peering can help ISPs to expand the network capacity and at the same time increase profits of content providers. The end users benefit from the lower prices for content services. Finally, we consider the situation when an ISP differentiates the service offer by engaging in content provision, thus entering in direct competition with content providers.     

Using local injury surveillance for community-based injury prevention: an analysis of scandinavian WHO safe community and canadian safe community foundation programmes

Injury surveillance is widely recognized as a critical prerequisite for effective injury prevention, yet few studies have investigated its use by community-based injury prevention programmes. This study examined the extent to which local injury data were collected, documented, analysed, linked to injury prevention action and used for evaluation among WHO Safe Communities in Scandinavia (25 programmes) and the Canadian Safe Community Foundation (SCF) network (16 programmes). For each programme, a key informant with relevant local knowledge was selected to respond to an emailed questionnaire. The study demonstrates that community-based injury prevention programmes experience difficulties accessing and effectively utilizing local injury surveillance data. The findings suggest that the responding SCF programmes approach injury prevention more scientifically than the Scandinavian WHO-designated Safe Community programmes, by making greater use of injury surveillance for assessment, integration into prevention strategies and measures, and evaluation. Despite study limitations, such as the low response rate among Canadian programmes and a large number of non-responses to two questions, the results highlight the importance of, and need for, greater use of local injury surveillance.     

Entrepreneurship and its determinants in a cross-country setting

The relative stability of differences in entrepreneurial activity across countries suggests that other than economic factors are at play. The present paper offers some new thoughts about the determinants of entrepreneurial attitudes and activities by testing the relationship between institutional variables and cross-country differences in the preferences for self-employment as well as in actual self-employment. Data of the 25 member states of the European Union as well as the US are used. The results show that country specific (cultural) variables seem to explain the preference for entrepreneurship, but cannot explain actual entrepreneurship. The present paper also introduces the remaining four papers of the special issue of the Journal of Evolutionary Economics, which center around the theme Entrepreneurship and Culture.

Formulae of recurrence for the semiinvariants at a class of frequency functions of more variables

Abstract

In a paper in this journal¹ Mr. Paul Qvale has proved following theorem:     

On the test of the hypothesis that the probability of an event is contained within given limits

Asbtract

The hypernormal (or Lexian) frequency function can be defined by the integral where θ(p) is the frequency (or density) function of p defined in the interval. We have, of course, that and that .     

Empirical approach to the analysis of university student absenteeism: proposal of a questionnaire for students to evaluate the possible causes

Works on student absenteeism in the universities have not been preferential for the authors in the field of educational research. Usually, what has been made is an approach to the available absenteeism data as an intervening variable or as a variable characteristic of the educational process, but not as a dependent variable in the strict sense of the term. In this work, we intend to make an empirical approach to the possible reasons of student absenteeism. There is a double point of view: the students’ and the professors’; the reasons that justify it according to its protagonists are studied. This paper focuses on the six university degrees taught at the School of Economy and Business of the University of Barcelona (Facultat d’Economia i Empresa de la Universitat de Barcelona). An “ad-hoc” questionnaire has been prepared and the opinions of 1,162 undergraduates have been analyzed. The reasons given by each population differ in hierarchy and motivations.