1,599 research outputs found
Elements of the Integrated Support Model for Innovative Academic Entrepreneurship
Przedstawiony artykuł poświęcony jest tendencjom rozwoju przedsiębiorczości akademickiej.
W pierwszej jego części omówiono pojęcie oraz formy przedsiębiorczości akademickiej. Rozwój tej
postaci przedsiębiorczości jest konsekwencją przekształceń uczelni wyższych oraz jej dopasowania
do wyzwań współczesnego rozwoju gospodarczego. W drugiej części skoncentrowano się na wybranych
zagadnieniach związanych ze wsparciem przedsiębiorczości akademickiej, a w szczególności:
etapach działań wspierających inicjatywy przedsiębiorcze, czynnikach i modelach wsparcia
przedsiębiorstw. Omówiono także kontekst międzynarodowy podejmowania innowacji i jego
wpływ na postawy przedsiębiorcze w środowisku akademickim
Anomalous magnetotransport in the heavy-fermion superconductor Ce2PdIn8
The normal state behavior in the heavy-fermion superconductor Ce2PdIn8 has
been probed by means of Hall coefficient (RH) and transverse magnetoresistivity
(MR) measurements. The results indicate the predominance of contributions from
antiferromagnetic spin fluctuations at low temperatures. Anomalous
non-Fermi-liquid-like features, observed below 8 K in both RH(T) and MR(T), are
related to underlying quantum critical point, evidenced before in the specific
heat and the electrical resistivity data. The magnetotransport in Ce2PdIn8 is
shown to exhibit specific types of scaling that may appear universal for
similar systems at the verge of magnetic instability.Comment: Accepted as a Rapid Communication in Physical Review
Doping dependence of the Nernst effect in Eu(Fe1-xCox)2As2 - departure from Dirac fermions physics
We report a systematic study of the transport properties in the series of
Eu(Fe1-xCox)2As2 single crystals with x = 0, 0.15, 0.20 and 0.30.
Spin-density-wave order is observed in the undoped and the least doped samples
(x = 0, 0.15), while for x = 0.15 and 0.20 Eu(Fe1-xCox)2As2 becomes a
superconductor. We found the properties of the parent EuFe2As2 compound well
described by the Dirac fermions model, whereas cobalt doping caused an
evolution of the system toward a regular metallic state. The antiferromagnetic
ordering of the Eu2+ ions at T_N ~ 20 K has only minor influence on the
measured quantities.Comment: 5 pages, 5 figures; ver.3: the sign convention for the Nernst
coefficient is change
Enhancement of the Hall-Lorenz number in optimally doped YBa2Cu3O_7-d
Electronic heat transport in the normal state of a high-quality single
crystal of optimally-doped superconductor YBa2Cu3O6.95 was studied by
measurements of longitudinal and transverse transport coefficients. For the
temperature range from 100 to 300 K, the Hall-Lorenz number (Lxy) depends
weakly on temperature and is about two times larger than the Sommerfeld value
of the Lorenz number Lo = (pi^2)/3. Our results can be interpreted using a
Fermi liquid model when effects of the pseudogap that opens at the Fermi level
are included. However, we find that the bipolaron model can also explain both
the enhanced value and the weak temperature dependence of the Hall-Lorenz
number.Comment: Accepted for publication in Europhysics Letters; 16 pages, 2 figure
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