Entrepreneurial orientation and the business performance of SMEs: a quantitative study from the Netherlands

Entrepreneurial Orientation (EO) is often mentioned as an antecedent of growth, competitive advantage and superior performance, and prior empirical research has often shown a positive relationship between EO and performance appears to exist. However, an important question that remains unanswered is what effect EO might have on firm performance during periods of economic crisis, and the severe environmental turbulence that accompany such crises. This research is a first investigation towards the effects of EO on the performance of small and medium sized firms during the current global economic crisis. In this study we use the multidimensional model of EO and test a series of hypotheses pertaining to its performance effects using survey data gathered from 164 Dutch SMEs. The present research shows that proactive firm behavior positively contributes to SME performance during the economic crisis. We further show that innovative SMEs do perform better in turbulent environments, but those innovative SMEs should minimize the level of risk and should take action to avoid projects that are too risky.     

Estimation of energy expenditure using accelerometers and activity-based energy models��validation of a new device

Over the last few years, the estimation of energy expenditure with accelerometers has become more and more accurate due to improvements in sensor technology. Significant enhancement could be reached by model-based estimation regarding different activity types. The kmsMove-sensor (movisens GmbH, Karlsruhe, Germany) is a device that is used to compute human energy expenditure using motion-dependent calculation models. It is outfitted with an accelerometer to measure body acceleration during certain movements and activities. To validate its accuracy, the sensor was compared to indirect calorimetry as criterion measure. For this experiment, nine subjects (all males, age 46.4 ± 10.9 years, 28–64 years) were equipped with the kmsMove-sensor as well as a portable indirect calorimeter and their energy consumption was measured over a time period of 100 min. Additionally, the energy consumption of seven out of the above-mentioned nine subjects was measured over an average of 7 h. The measurements took place in a rehabilitation clinic, where the subjects completed their regular daily rehabilitation activities. An analysis of the data revealed ICCs between the kmsMove-sensor and indirect calorimetry for the time period of 100 min of 0.82 (0.38–0.96; p = 0.003) and for an averaged measuring time of 7 h of 0.81 (0.22–0.97; p = 0.01). Furthermore, a Bland–Altman analysis for the time period of 100 min led to a difference of the means of 4.3 kcal (limits of agreement: −94.3 and 102.9 kcal) and for the time period of an average of 7 h to −14.0 kcal (limits of agreement: −320.0 and 292.0 kcal). These findings indicate that the kmsMove-sensor is an appropriate measuring device with relatively good accuracy to assess human energy expenditure in rehabilitation patients. However, this study has some limiting aspects (small sample size, artificial setting) which could influence validity.     

A note on limit results for the Penrose–Banzhaf index

Theory and Decision - It is well known that the Penrose–Banzhaf index of a weighted game can differ starkly from corresponding weights. Limit results are quite the opposite, i.e., under...     

The Problems of Assessing Transnational Mobility: Identifying Latent Groups of Immigrants in Germany Using Factor Mixture Analysis

This paper explores immigrants’ transnational mobility in Germany. It uses data of the Socio-Economic Panel Study and four indicators regarding frequency, length, and total duration of visits to the country of origin. The study applies factor mixture analyses in order to investigate whether (a) the observed indicators refer to a uniform underlying construct of transnational mobility and (b) the relationship between the latent construct and the observed indicators establishes in a uniform manner for all respondents. The most reliable model distinguishes three latent classes of immigrants, thus indicating no uniform underlying construct of transnational mobility. Theoretically consistent findings could be derived for about 58 % of the 4019 respondents. However, the relation between the observed indicators and the latent variable diverges substantially for the remaining 42 %. Thus, the findings indicate that the commonly applied indicator of return visits largely fails to assess transnational mobility. Rather, different groups of immigrants engage very diversely in visits to the country of origin. The findings stimulate a variety of conceptual problems future theoretical and empirical research needs to tackle.     

A review of empirical research on dynamic competitive strategy

Beginning with Chandler's 1962 seminal work, researchers have emphasized that competitive strategy is not a static phenomenon, but rather a sequence of interconnected actions and reactions unfolding over time. This paper reviews the empirical research on dynamic competitive strategy published between 1986 and 2005 in nine leading strategic management journals. An integrated framework is used to showcase the research in terms of antecedents, strategic actions and outcomes. The literature review demonstrates that significant progress has been made in the field of dynamic competitive strategy, and yet that there are still many promising lines of inquiry for future theoretical and empirical research, particularly in the areas of strategic action timing and path dependency.     

Poly(ADP-ribosyl)ation, PARP, and aging

Poly(ADP-ribose) polymerases (PARPs) catalyze the poly(ADP-ribosyl)ation of proteins. This posttranslational modification, as generated by the DNA damage-activated enzymes PARP-1 and -2, has long been known to be involved in DNA repair. Correlative data have suggested an association between DNA damage-induced poly(ADP-ribosyl)ation and mammalian longevity, and this link has recently been strengthened by the discovery of interactions between PARP-1 and the Werner syndrome protein. Emerging additional members of the PARP family display different cellular localizations and are involved in diverse processes such as the regulation of telomere or centrosome function, thereby providing further, independent links between poly(ADP-ribosyl)ation and the aging process.     

Entrepreneurship research: mapping intellectual structures and research trends

Review of Managerial Science - Using bibliometric techniques to identify connections between existing entrepreneurship studies, this article seeks to understand the scientific structure of...