Diagnosing and treating testosterone deficiency in different parts of the world. Results from global market research

Aim. This study analysed variations between different regions of the world in diagnosing and treating testosterone (T) deficiency.

Methods. Physicians were interviewed in Germany, Spain and the United Kingdom, in Brazil, in Saudi Arabia and South Korea. Items in the survey: 1) reasons/motivation to use or not to use T; 2) what category of patients would not receive T on the basis of these concerns; 3) concerns about prostate pathology in the decision not to provide T treatment; 4) phosphodiesterase type 5 (PDE-5) inhibitors are efficacious, but T treatment makes a comeback.

Results. Between 5% and 10% of consulting patients suffered from T deficiency. The fear to induce prostate cancer appeared very powerful. About 68% of physicians associate the use of T more with risks than benefits, more so in Europe than elsewhere. As a result about 35% of hypogonadal men do not receive treatment. The PDE-5 inhibitors are very prominent in the treatment of erectile dysfunction. Of patients suffering from erectile dysfunction, 18% to 29% have T deficiency which is not always diagnosed and treated.

Conclusion. World-wide physicians require more education on diagnosing T deficiency, on the role of T in erectile dysfunction and the relative safety of testosterone treatment.     

Wachstumsbedingungen von Ein-Personen-Gründungen – Eine Längsschnittbeobachtung über acht Jahre

This study analyzes the growth potential of one-person startups on the basis of the framework model proposed by Gilbert, McDougall and Audretsch (2006) by postulating five key groups of enterprise growth predictors: entrepreneur characteristics, resources, strategy, industry, and organizational structures and systems. The framework model was adapted to suit the specific circumstances of one-person startups. The model was tested using a longitudinal data set comprising 188 Austrian one-person startups which were observed over a period of eight years. At the end of the observation period, the businesses included in the study had an average of 1.33 employees. The gender of the founder, capital requirements at the time of establishment, and growth strategy proved to be the most important predictors of growth. In addition, human capital resources also tended to have a positive impact. In summary, it is possible to draw empirically reliable conclusions about growth potential on the basis of the “seriousness” of an one-person startup project.     

Macht in der Organisationsberatung

Power in organization counseling. A qualitative study in a hospital in East Germany Power is a main topic of this analysis of a consulting process in an East German hospital: How power is appearing within organizational consulting? What is the power the client has, and the consultants have? And what is the interrelation between power and the resistance to change? In recourse to the theory of micropolitics, power is understood as the combination of rules and distribution of resources within an organization. The consulting process itself is interpreted as the consultant’s introduction to the ongoing game the organization is playing. The qualitative case study of the consulting process in an East German hospital clearly shows, how ineffective interventions remain, if the consultants fail to recognize and take into consideration the valid combination of rules and distribution of resources. In the presented case this combination is based on the peculiar history of East Germany. It was only after the project had failed that the consultants realized that they had been practiced upon.     

Generalized Gauss–Hermite filtering

We consider a generalization of the Gauss–Hermite filter (GHF), where the filter density is represented by a Hermite expansion with leading Gaussian term (GGHF). Thus, the usual GHF is included as a special case. The moment equations for the time update are solved stepwise by Gauss–Hermite integration, and the measurement update is computed by the Bayes formula, again using numerical integration. The performance of the filter is compared numerically with the GHF, the UKF (unscented Kalman filter) and the EKF (extended Kalman filter) and leads to a lower mean squared filter error.     

Opportunity Recognition – State of the Art und Forschungsperspektiven

The widespread acknowledgement of opportunity recognition as the distinctive attribute of entrepreneurship has led to increased research in this field. Published articles reveal a high level of heterogeneity and thus raise the demand for a review of current research on opportunity recognition. This article is aimed at providing a comprehensive and systematic overview of the existing research published between 1995 and 2006. Therefore theoretical as well as empirical research is reported and evaluated with regard to content and methodology. Furthermore, distinctive research avenues are identified. As a result four different schools of opportunity recognition are proposed: the human capital school, the cognitive school, the social capital/network school, and the learning school. Additionally a category for school-overlapping articles is introduced. The overview of the literature on opportunity recognition suggests as a next possible step the usefulness of a more qualitative approach to shed light on the diffuse concept of ‘opportunity’ itself.