972 research outputs found
Essays on the macroeconomics of housing markets
This dissertation consists of three chapters. Each chapter is self-contained
Learning strategies of first-year business students
The empirical study presented in this paper identifies potential strengths and weaknesses of firstâyear students´ learning strategies at the beginning of their studies. It concentrates on the students´ selfâassessment of their selfâmotivation, time management, and concentration, coping with stress and fear of failure, elaboration of information, ability to focus on important information, cooperative learning, selfâcontrol of learning progress, and dealing with exams. The results reveal that during their school days, numerous students have not (or just very rarely) applied learning strategies that may be considered indispensable for successfully studying at a university, like taking notes in class or summarizing the most important information. The paper explores the results and discusses possible options to support firstâyear students in coping with the difficulties they might face when studying and preparing for their first exams at the university
Financial literacy -- A traditional, yet new field for business educators
It is the objective of this paper to explore the definitions of financial education, as well as of financial literacy, in order to reveal the many dimensions that these terms comprise. Furthermore, the paper is intended to present, analyze, and discuss recent empirical research findings on various dimensions of financial literacy in an international context. The paper is concluded by summarizing the most important implications for future work and future research and development in this field
Surface evolution in stable magnetic fields: the case of the fully convective dwarf V374 Peg
We present BV(RI)_C photometric measurements of the dM4-type V374 Peg
covering ~430 days. The star has a mass of ~0.28M_Sun, so it is supposed to be
fully convective. Previous observations detected almost-rigid-body rotation and
stable, axisymmetric poloidal magnetic field. Our photometric data agree well
with this picture, one persistent active nest is found on the stellar surface.
Nevertheless, the surface is not static: night-to-night variations and frequent
flaring are observed. The flares seem to be concentrated on the brighter part
of the surface. The short-time changes of the light curve could indicate
emerging flux ropes in the same region, resembling to the active nests on the
Sun. We have observed flaring and quiet states of V374 Peg changing on monthly
timescale.Comment: 4 pages, 3 figures; Proceedings of IAU symposium 273, Physics of Sun
and star spots, Ventura, California 22-26 August 201
The New Contact Binary GSC 2414-0797
Original article can be found at: http://www.konkoly.hu/ibvs/GSC 2414-0797 has a contact binary star type light curve, a 0.4 magnitude brightness variation with a period 0.3406 days.Peer reviewe
Gas physical conditions and kinematics of the giant outflow Ou4
Ou4 is a recently discovered bipolar outflow with a projected size of more
than one degree in the plane of the sky. It is apparently centred on the young
stellar cluster -whose most massive representative is the triple system HR8119-
inside the HII region Sh 2-129. The driving source, the nature, and the
distance of Ou4 are not known. Deep narrow-band imagery of the whole nebula at
arcsec resolution was obtained to study its morphology. Long-slit spectroscopy
of the tips of the bipolar lobes was secured to determine the gas ionization
mechanism, physical conditions, and line-of-sight velocities. An estimate of
the proper motions at the tip of the south lobe using archival images is
attempted. The existing multi-wavelength data for Sh 2-129 and HR 8119 are also
comprehensively reviewed. The morphology of Ou4, its emission-line spatial
distribution, line flux ratios, and the kinematic modelling adopting a
bow-shock parabolic geometry, illustrate the expansion of a shock-excited fast
collimated outflow. The radial velocities and reddening are consistent with
those of Sh 2-129 and HR 8119. The improved determination of the distance to
HR8119 (composed of two B0 V and one B0.5 V stars) and Sh 2-129 is 712 pc. We
identify in WISE images a 5 arcmin-radius (1 pc at the distance above) bubble
of emission at 22 micron emitted by hot (107 K) dust, located inside the
central part of Ou4 and corresponding to several [O III] features of Ou4. The
apparent position and the properties studied in this work are consistent with
the hypothesis that Ou4 is located inside the Sh 2-129 HII region, suggesting
that it was launched some 90 000 yrs ago by HR8119. The outflow total kinetic
energy is estimated to be ~4e47~ergs. However, the alternate possibility that
Ou4 is a bipolar planetary nebula, or the result of an eruptive event on a
massive AGB or post-AGB star not yet identified, cannot be ruled out.Comment: Accepted for publication in Astronomy and Astrophysics. Also
available at http://hal.archives-ouvertes.fr/hal-0102228
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