An all-electrical torque differential magnetometer operating under ambient conditions

An all-electrical torque differential magnetometry (also known as cantilever magnetometry) setup employing piezoelectric quartz tuning forks is demonstrated. The magnetometer can be operated under ambient conditions as well as low temperatures and pressures. It extends the allowed specimen mass range up to several 10 $\mu$g without any significant reduction in the sensitivity. Operation under ambient conditions and a simple all-electrical design of the magnetometer should allow for an easy integration with other experimental setups. The uniaxial magnetic anisotropy of a 25 $\mu$m diameter iron wire, measured under ambient conditions with a high signal to noise ratio, was found to be in good agreement with its literature value. Further applications of the technique are discussed.Comment: 9 two-column pages, 9 figure

Influence of institutional context on high-growth entrepreneurship

This research aimed to explore the influence of the institutional context on the growth-potential of new businesses in South Africa. The purpose of this study is to highlight the major responsibility of bureaucracy to enable high-growth entrepreneurship in emerging economies by building a favourable economic, social and legal environment, known as the institutional context.An adapted research model was defined through an extensive literature review of prior studies in the fields of both institutional theory and entrepreneurship theory. An online survey was administered to many South African entrepreneurs via a number of databases across the country. The responses were then collected and analysed by means of a multiple regression analysis to test the six hypotheses of the research model.The results revealed that all the identified institutional factors were found to have significant influences on high-growth entrepreneurship in the intended directions, while access to technology was found to have the largest influence, and the regulatory framework also contributed substantially. This implies that the bureaucracy of the country has to consider all the identified factors when attempting to design a supportive institutional environment to stimulate high-growth entrepreneurship. However, the greatest results will be achieved by focusing specifically on the access to an extensive technological infrastructure and an effective regulatory framework.Dissertation (MBA)--University of Pretoria, 2012.Gordon Institute of Business Science (GIBS)unrestricte

El Ocaso de los Dioses

Director : F. HoesslinDirector escènic : H. MeissnerEmpresa J. Mestres CalvetFunció a benefici dels empleats permanents, porters, acomodadors del G.T. del LiceuÒpera de R. Wagne

La Walkyria

De cada obra s'ha digitalitzat un programa sencer. De la resta s'han digitalitzat les parts que són diferents.Direcció general i d'escena: Hans Meissner ; Mestres directors: Franz Konwitschny i Franz von HoesslinEmpresa: Juan Mestres Calve

Festival Sinfónico por la Orquesta Sinfónica del Gran Teatro del Liceo

De cada obra s'ha digitalitzat un programa sencer. De la resta s'han digitalitzat les parts que són diferents.Direcció artística Empresa Juan Mestres CalvetOrquestra del Gran Teatre del Liceu dirigida per Franz von Hoessli