The power density of traction drives can be increased with advanced cooling systems or reduced losses. In induction machines with housing and shaft cooling, the produced heat in the stator and rotor winding system needs to be extracted over the rotor and stator lamination. The influence of soft magnetic material parameters, such as texture, thickness or alloy components on the magnetization and loss behavior, are well studied. Studies about influencing factors on the thermal conductivity are hard to find. Within this study, eight different soft magnetic materials are analyzed. An analytical approach is introduced to calculate the thermal conductivity. Temperature-dependent measurements of the electric resistivity are performed to obtain sufficient data for the analytical approach. An experimental approach is performed. The thermal diffusivity, density, and specific heat capacity are determined. An accuracy study of all measurements is performed. The analytical and the experimental approach show good agreement for all materials, except very thin specimens. The estimated measurement error of those specimens has high values. The simplified case study illustrates the significant influence of the different soft magnetic materials on the capability to extract the heat in the given application.
Squash is a popular sport practiced around the world by millions of people. In the last few years, this sport started being played more and more in Romania. Squash is perceived as a very dynamic sport activity challenging at the same time the physical capacities and the technical skills of the players. In racquet sports, technical skills are revealed by the ability to hit a shot accurately toward a targeted area. The aim of this study was to evaluate the current technical level of the Romanian players using the Hunt Squash Accuracy Test (HSAT). Eleven male and female squash players, from 2 clubs, performed HSAT which consists of 375 shots across 13 different types of squash strokes on both the forehand (FH) and backhand (BH) side. The Romanian players (32.4 ±12.5 yo; 76.4 ±18.6 kg; 172.8 ±10.5 cm) have an experience of 9.6 (± 8.3) months and practice on average 2 times per week for about 90 (± 30) min, with a "friend". The HSAT score for Romanian players was 29.3% overall with 29.5% for FH and 24.0% for BH. The relative high percentage of shot errors (70%) indicates that Squash players in Romania are not doing specific and structured training with a specialized coach. These findings strengthen the belief that Squash is played in Romania just at amateur/leisure level.
There is a saying that a talented person is talented in everything. This statement refers entirely to the doctor habilitatus in philosophy, the university professor Grigore Vasilescu, who reached the beautiful jubilee of his life and activity, with significant achievements on multiple levels. The paths of professional development and civic activity of Mr Vasilescu are fully described by his scientific articles, edited monographs and collections, developed conferences and international research projects, implemented social and civic activities, as well as by his PhD students who have defended their doctoral theses and today are his colleagues and by students, who, being guided by the Professor discover the most attractive secrets of the “international relations” profession and study new horizons in the field of political sciences, global processes and issues, European studies and regional processes. In all these fields, during the past decades, is highlighted the Professor with vocation, the Scientist, the Human, the Citizen and the Patriot, the doctor habilitatus in philosophy, the university professor Grigore VASILESCU, who his whole life is being delighted by everything that is beautiful, by poetry, music, painting and love for the people.
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