204 research outputs found
Three-body non-additive forces between spin-polarized alkali atoms
Three-body non-additive forces in systems of three spin-polarized alkali
atoms (Li, Na, K, Rb and Cs) are investigated using high-level ab initio
calculations. The non-additive forces are found to be large, especially near
the equilateral equilibrium geometries. For Li, they increase the three-atom
potential well depth by a factor of 4 and reduce the equilibrium interatomic
distance by 0.9 A. The non-additive forces originate principally from chemical
bonding arising from sp mixing effects.Comment: 4 pages, 3 figures (in 5 files
The Influence of Temporal Fit/Nonfit on Creativity in the Leader-Subordinate Context: The Moderating Role of Task Enjoyment versus Performance Concern
This study extends regulatory fit theory by exploring boundary conditions
of the temporal fit/nonfit effect on subordinate creativity. We propose
that fit (nonfit) between subordinates regulatory focus and the temporal
distance of a leader-stipulated task enhances subordinate creativity under
task-enjoyment (performance-concern) conditions. Data supported the
nonfit hypothesis among promotion-focused subordinates: Subordinates
who were more promotion-focused showed greater creativity after recalling
a leader-stipulated, temporally near task when they concentrated on doing
well rather than on enjoying the task. Prevention-focused subordinates showed no such patterns for creativity. Implications for managing employee
creativity in the competitive, performance-pressured organizational and
business environment are discussed
Effects of preweaning and post weaning implants on suckling, growing, and finishing steer performance
One hundred and ninety-five crossbred steers were used to compare lifetime
implant strategies and study the effects of implanting during the suckling period on
performance in the growing and finishing periods. There were no differences in
growing period gains when both groups were implanted in the suckling period and
the growing period. However, steers implanted in the suckling period but not
implanted in the growing period had significantly lower gains than all other
treatments including controls. Steers implanted only in the growing period had
better feed efficiency in the growing period than both controls and steers
implanted only in the suckling period.
Steers reimplanted during the finishing period had similar finishing gains
regardless of prior implant treatment, and all implanted cattle gained faster than
controls in the finishing period. Steers not reimplanted during the finishing period
had lower gains than those reimplanted. Implanting in the finishing period resulted
in better feed efficiency.
All implanted cattle that were reimplanted in the finishing period had
higher lifetime gains than controls, but there was no difference between implant
combinations. The only carcass characteristic changed by implanting was quality
grade, which was reduced by all implant combinations with the exception of
implanting only in the finishing period.
Implanting during the suckling period did not reduce cattle performance
during the growing and finishing periods when the steers were also implanted
during these periods. This study emphasizes the importance of implanting twice in
the finishing period to maximize finishing gain and final weight
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