3,139 research outputs found
Doubly autoparallel structure on the probability simplex
On the probability simplex, we can consider the standard information
geometric structure with the e- and m-affine connections mutually dual with
respect to the Fisher metric. The geometry naturally defines submanifolds
simultaneously autoparallel for the both affine connections, which we call {\em
doubly autoparallel submanifolds}.
In this note we discuss their several interesting common properties. Further,
we algebraically characterize doubly autoparallel submanifolds on the
probability simplex and give their classification
Educational Psychologists' Experiences and Perceptions of Reflective Practice
This study explored Educational Psychologists’ experiences and perceptions of reflective practice. Reflective practice generates significant professional interest. However, it is an area where there has been a lack of research to date. For this study, ten Educational Psychologists, currently practicing in the United Kingdom and the Republic of Ireland, were interviewed. The qualitative data from those interviews was analysed using thematic analysis. Four overarching themes, and eight themes, were identified: Educational Psychologists as Reflective Practitioners (professional interest in reflective practice); Outcome of Reflective Practice (effect on EP role; Dunning-Kruger effect); Wide-Ranging Reflective Space (.means for reflection; enabler of reflective practice; obstacles) and The Way Forward (observation of growth; opportunities for forthcoming development). Participants were generally positive in their views and experiences of reflective practice, feeling that it benefited both their professional practice and their personal wellbeing. In order for the use of reflective practice to grow, it needs to be given greater priority at individual, organisational and governing levels. The lack of an agreed definition of reflective practice was also seen as a barrier. Finally, the study highlighted the importance of continued research into reflective
practice
Photoinduced magnetic bound state in itinerant correlated electron system with spin-state degree of freedom
Photo-excited state in correlated electron system with spin-state degree of
freedom is studied. We start from the two-orbital extended Hubbard model where
energy difference between the two orbitals is introduced. Photo-excited
metastable state is examined based on the effective model Hamiltonian derived
by the two-orbital Hubbard model. Spin-state change is induced by
photo-irradiation in the low-spin band insulator near the phase boundary.
High-spin state is stabilized by creating a ferromagnetic bound state with
photo-doped hole carriers. An optical absorption occurs between the bonding and
antibonding orbitals inside of the bound state. Time-evolution for
photo-excited states is simulated in the time-dependent mean-field scheme.
Pair-annihilations of the photo-doped electron and hole generate the high-spin
state in a low-spin band insulator. We propose that this process is directly
observed by the time-resolved photoemission experiments.Comment: 15 pages, 16 figure
Modified Spin Wave Analysis of Low Temperature Properties of Spin-1/2 Frustrated Ferromagnetic Ladder
Low temperature properties of the spin-1/2 frustrated ladder with
ferromagnetic rungs and legs, and two different antiferromagnetic next nearest
neighbor interaction are investigated using the modified spin wave
approximation in the region with ferromagnetic ground state. The temperature
dependence of the magnetic susceptibility and magnetic structure factors is
calculated. The results are consistent with the numerical exact diagonalization
results in the intermediate temperature range. Below this temperature range,
the finite size effect is significant in the numerical diagonalization results,
while the modified spin wave approximation gives more reliable results. The low
temperature properties near the limit of the stability of the ferromagnetic
ground state are also discussed.Comment: 9 pages, 8 figure
Gamma Group-The Pale Horse: A proposal in response to a commercial air transportation study ort study
A conventional remotely piloted vehicle (RPV) was designed to operate in a fictional 'Aeroworld' as a 30 passenger aircraft. The topics addressed include: economic/cost analysis, aerodynamics, weight and structures, propulsion, stability and control, and performance
A Picard Iterative Method for Estimating Solutions to Certain Differential Equations
Numerical implementation of Picard iteration for estimating solutions to certain differential equation
Analysis of indoor environment and insulation performance of residential house with double envelope vacuum insulation panels
Double envelope vacuum insulation panels (VIPs) have a possibility to significantly increase the service lifetime. In this paper, double envelope VIPs were produced and installed in the residential house. The performance of installed VIPs was evaluated by using the measuring data of heat flux meter. In addition, the total energy, the heating load and the indoor thermal environment of this house were measured and analysed. The average heating load and the average temperature difference between room temperature and ambient air temperature on the representative day was 2.49 kW and 29.9 oC, respectively. The heat loss coefficient per floor area was estimated as 0.69 W/(m2K) and it was almost the same as the value calculated at the time of design. The result of indoor environment measurement showed that the room temperature was maintained at around 20 oC and PMV was -0.5 oC or higher although the outside air temperature fluctuated between -5 oC and -10 oC. The effective thermal conductivities of double envelop VIPs were all estimated as 0.01 W/(mK) or less. It is considered that the insulation performance of the vacuum insulation panels is maintained
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