68,531 research outputs found
Hemi-field memory for attractiveness
In order to determine whether or not facial attractiveness plays a role in hemispheric facial memory, 35 right-handed participants first assigned attractiveness ratings to faces and then performed a recognition test on those faces in the left visual half-field (LVF) and right visual half-field (RVF). We found significant interactions between the experimental factors and visual half- field. There were significant differences in the extreme ends of the rating scale, that is, the very unattractive versus the
very attractive faces: Female participants remembered very attractive faces of both women and men, with memory being superior in the RVF than in the LVF. In contrast,
the male participants remembered very unattractive faces of both women and men; RVF memory was better than the LVF for women faces while for men faces memory was superior in the LVF. The interactions with visual half-field suggest that hemispheric biases in remembering faces are influenced by degree of attractiveness
Ethnic Identity Maintenance within the Latino-American Church: a Structuration Perspective
The Latino ethnic/immigrant church plays a significant role in maintaining the ethnic identity of its congregants. Through the perspective of structuration theory, this qualitative analysis investigates how the activities of the church impact its members and how an individual might contribute to the cultural structure of the Latino church (i.e., duality of structure). Interviews of 25 pastors from Spanish-speaking congregations in both urban and rural settings in Oregon resulted in several themes including the initial planting of the church, the denominational structure, the emergence of a new multiethnic cultural identity, generational differences, and the influence of Spanish
Deconstruction and Gauge Theories in AdS_5
On a slice of AdS_5, despite having a dimensionful coupling, gauge theories
can exhibit logarithmic dependence on scale. In this paper, we utilize
deconstruction to analyze the scaling behavior of the theory, both above and
below the AdS curvature scale, and shed light on position-dependent
regularizations of the theory. We comment on applications to geometries other
than AdS.Comment: 15 pages, 1 figur
The effect of silicon on the glass forming ability of the Cu47Ti34Zr11Ni8 bulk metallic glass forming alloy during processing of composites
Composites of the Cu47Ti34Zr11Ni8 bulk metallic glass, reinforced with up to 30 vol % SiC particles are synthesized and characterized. Results based on x-ray diffraction, optical microscopy, scanning Auger microscopy, and differential scanning calorimetry (DSC) are presented. During processing of the composites, a TiC layer forms around the SiC particles and Si diffuses into the Cu47Ti34Zr11Ni8 matrix stabilizing the supercooled liquid against crystallization. The small Si addition between 0.5 and 1 at. % increases the attainable maximum thickness of glassy ingots from 4 mm for Cu–Ti–Zr–Ni alloys to 7 mm for Cu–Ti–Zr–Ni–Si alloys. DSC analyses show that neither the thermodynamics nor the kinetics of the alloy are affected significantly by the Si addition. This suggests that Si enhances the glass forming ability by chemically passivating impurities such as oxygen and carbon that cause heterogeneous nucleation in the melt
Higher-Rank Numerical Ranges and Compression Problems
We consider higher-rank versions of the standard numerical range for
matrices. A central motivation for this investigation comes from quantum error
correction. We develop the basic structure theory for the higher-rank numerical
ranges, and give a complete description in the Hermitian case. We also consider
associated projection compression problems.Comment: 14 pages, 3 figures, to appear in Linear Algebra and its Application
Lower bounds to energy eigenvalues for the stark effect in a rigid rotator
Lower bounds to energy eigenvalues for rigid rotator in electric field Stark effect calculation - Schroedinger equatio
Optimized sympathetic cooling of atomic mixtures via fast adiabatic strategies
We discuss fast frictionless cooling techniques in the framework of
sympathetic cooling of cold atomic mixtures. It is argued that optimal cooling
of an atomic species - in which the deepest quantum degeneracy regime is
achieved - may be obtained by means of sympathetic cooling with another species
whose trapping frequency is dynamically changed to maintain constancy of the
Lewis-Riesenfeld adiabatic invariant. Advantages and limitations of this
cooling strategy are discussed, with particular regard to the possibility of
cooling Fermi gases to a deeper degenerate regime.Comment: 5 pages, 3 figure
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