The flexible firm

In this article an attempt is made at giving a more concrete meaning to the notion of flexibility of a firm. The relationship between the dynamics of the environment on the one hand and the chosen strategy and organizational structure of the firm on the other, will be further analysed The aiming at flexibility is considered to be a separate economic basic goal next to rentability and independence, as firms increasingly happen to be in a turbulent environment. Special attention is given to the flexibility of a number of different organizational structures.It appears that a number of global recommendations can be made concerning the choice of strategy and organizational structure while explicitly taking the flexibility goal into account.     

A sequential approach to testing seasonal unit roots in high frequency data

In this paper we introduce a sequential seasonal unit root testing approach which explicitly addresses its application to high frequency data. The main idea is to see which unit roots at higher frequency data can also be found in temporally aggregated data. We illustrate our procedure to the analysis of monthly data, and we find, upon analysing the aggregated quarterly data, that a smaller amount of test statistics can sometimes be considered. Monte Carlo simulation and empirical illustrations emphasize the practical relevance of our method.     

Why one person one vote?

We provide a simple justification as to why the core principal in liberal democracies the one-person-one-vote is desirable. We compare two possible constitutions. In a fixed democracy, each individual has one vote and the same opportunity to propose public projects. In a flexible democracy, those that set the agenda can additionally propose to limit future participation in voting and agenda-setting. We show that a fixed democracy restricts majorities from taxing minorities to a greater extent than a flexible democracy. A flexible democracy may be more suited to enable a polity to undertake public projects. This possible advantage may be too small to outweigh taxation distortions and citizens unanimously favor the one-person-one-vote rule ex ante.I am grateful to Ami Glazer, Ulrich Erlenmaier, Tobias Kleinschmidt, seminar participants in Heidelberg and Konstanz, and in particular to an anonymous referee for valuable suggestions and comments.     

A temporary equilibrium model for international migration

This paper is concerned with the existence of temporary equilibria of migration with an overlapping generation structure and analyzes some of its properties. In the first part of the paper sufficient conditions for the existence of a temporary equilibrium of migration (in a given period) are given. In the second part some interesting properties of migration equilibria are analyzed. In particular the effects of differing degrees of information of the individuals on migration equilibria are investigated. Furthermore, it is shown that incomplete information alone suffices to induce migration flows even between countries that can be regarded as identical from an economic point of view.The paper was partly written during a research stay at the Sonderforschungsbereich 178 (University of Konstanz). Financial support of the Deutsche Forschungsgemeinschaft is gratefully acknowledged. We wish to thank an anonymous referee for helpful comments.     

Laypeople''s and Experts'' Perception of Nanotechnology Hazards

Public perception of nanotechnology may influence the realization of technological advances. Laypeople's (N=375) and experts' (N=46) perception of 20 different nanotechnology applications and three nonnanotechnology applications were examined. The psychometric paradigm was utilized and applications were described in short scenarios. Results showed that laypeople and experts assessed asbestos as much more risky than nanotechnology applications. Analyses of aggregated data suggested that perceived dreadfulness of applications and trust in governmental agencies are important factors in determining perceived risks. Similar results were observed for experts and laypeople, but the latter perceived greater risks than the former. Analyses of individual data showed that trust, perceived benefits, and general attitudes toward technology influenced the perceived risk of laypeople. In the expert sample, confidence in governmental agencies was an important predictor of risks associated with nanotechnology applications. Results suggest that public concerns about nanotechnology would diminish if measures were taken to enhance laypeople's trust in governmental agencies.     

Forgotten Athletes and Token Reporters: Analyzing the Gender Bias in Sports Journalism

This study considers the coverage of women’s sports and the involvement of women in newspaper sports journalism in the United States, the United Kingdom, and Australia. Results of a content analysis (N = 3,382) show that the coverage of, and professional opportunities for, women and men are far from equal in sports media. Further, results of a survey of professional journalists (N = 298) show that despite a widespread acknowledgment of the inequities that exist, male journalists remain significantly less likely than female journalists to report supporting an increased role for women within     

Mountain chickadees adjust songs,calls and chorus composition with increasing ambient and experimental anthropogenic noise

Vocal plasticity may allow birds to reduce masking effects of noise pollution arising from urbanization. Mountain chickadees (Poecile gambeli) use both songs and calls during the dawn chorus, which vary in masking susceptibility. Thus, increasing song or call frequency, or switching between vocalization types are all potential mechanisms to reduce masking during fluctuating noise conditions. Further, prior experience with noise pollution may be a necessary precursor to allow birds to alter signals in response to sudden noisy conditions. To determine how mountain chickadee songs, calls, and chorus composition are affected by noise, we recorded 55 males across gradients of local ambient noise and habitat urbanization in three cities in British Columbia, Canada. Of these individuals, 31 were also exposed to 5-min experimental noise treatments. Habitat urbanization was quantified through a continuous index reflecting properties of urbanized areas. Only song frequency increased with local ambient noise, and this effect varied regionally. In response to experimental noise exposure, males increased the frequency of their calls (but not of their songs), and varied their use of songs vs. calls. Interestingly, this response was dependent on local ambient noise levels: males in noisy areas shifted to using relatively more songs, whereas males in quiet areas shifted to using relatively more calls. These findings may suggest that although mountain chickadees are capable of adjusting their vocalizations, choosing a response which can lead to masking release may require prior exposure to high levels of ambient noise.     

Affectionate Communication Is Associated With Emotional and Relational Resources in the Grandparent-Grandchild Relationship

Grounded in affection exchange theory (AET; Floyd, 2006), this study examined the extent to which affection received from grandparents is associated with grandchildren’s perceptions of their grandparents and their grandparent-grandchild relationship (in the form of emotional closeness, shared family identity, and perceived availability of social support). Young adult grandchildren (N = 171) completed several instruments in reference to their relationship with a specific grandparent. The results of multiple regression analyses generally supported the hypotheses that received affection is associated positively with grandchildren’s perceptions of their grandparents and their grandparent-grandchild relationship. These findings support AET’s utility in the grandparent-grandchild relationship and the notion that grandparents often influence their grandchildren’s perceptions of their family.