1,888 research outputs found
The Impact of Risk and Trust on Confrontations of Sexism: The Role of Goals
Sexism is still persistent in the United States (Swim et al., 2001), especially in the workplace (Fitzgerald, 1993; Loy & Stewart, 1984), leading to many negative outcomes for women. Unfortunately, there is an assumption in America that targets of bias will confront the perpetrator in the moment. However, this is often not the case leading to a disconnect in society at the cost of the target (Gutek & O’Connor, 1995). Looking at targets’ decision-making process and the factors that influence it can provide more context for why targets respond the way they do. I tested whether behaviors following bias (i.e., avoidance, repairing, confronting) can be influenced by the targets goal choice (i.e., self-protection, liking, respect) and if those in turn can be influenced by factors such as risk and trust. As predicted, in both Study 1 (n = 262) and Study 2 (n = 262), high (vs. low) risk did not influence protection but risk did increase liking. Contrary to predictions, risk did not impact respect. As hypothesized, goals predicted behavior in both studies with protection predicting avoidance, liking predicting repair, and respect predicting confrontation. However, the indirect effect of risk on repair through liking was the only mediation. In Study 2, the trust manipulation was unsuccessful. A continuous measure of trust was positively associated with the liking goal and only moderated the indirect effect of risk on repair through liking. These results indicate that while goals do influence behavior, in this context, the liking goal is the most influenced by the risk scenario and the most related to trust, which in turn impacted its effect on repair behaviors. The type of risk manipulation used, and the failure of the trust manipulation are considered in terms of their influence on the results of these studies, and implications for female targets of sexism are discussed
Narrow-escape-time problem: the imperfect trapping case
We present a master equation approach to the \emph{narrow escape time} (NET)
problem, i.e. the time needed for a particle contained in a confining domain
with a single narrow opening, to exit the domain for the first time. We
introduce a finite transition probability, , at the narrow escape window
allowing the study of the imperfect trapping case. Ranging from 0 to ,
allowed the study of both extremes of the trapping process: that of a
highly deficient capture, and situations where escape is certain ("perfect
trapping" case). We have obtained analytic results for the basic quantity
studied in the NET problem, the \emph{mean escape time} (MET), and we have
studied its dependence in terms of the transition (desorption) probability over
(from) the surface boundary, the confining domain dimensions, and the finite
transition probability at the escape window. Particularly we show that the
existence of a global minimum in the NET depends on the `imperfection' of the
trapping process. In addition to our analytical approach, we have implemented
Monte Carlo simulations, finding excellent agreement between the theoretical
results and simulations.Comment: 9 page
Nurses in expanded roles to strengthen community-based health promotion and chronic care: Policy implications from an international perspective; A commentary
© 2018 The Author(s). Chronic conditions and health inequalities are increasing worldwide. Against this backdrop, several countries, including Israel, have expanded the roles of nurses as one measure to strengthen the primary care workforce. In Israel, community nurses work in expanded roles with increased responsibilities for patients with chronic conditions. They also work increasingly in the field of health promotion and disease prevention. Common barriers to role change in Israel are mirrored by other countries. Barriers include legal and financial restrictions, resistance by professional associations, inflexible labor markets and lack of resources. Policies should be revisited and aligned across education, financing and labor markets, to enable nurses to practice in the expanded roles. Financial incentives can accelerate the uptake of new, expanded roles so that all patients including vulnerable population groups, benefit from equitable and patient-centered service delivery in the communities
Mixing of ultracold atomic clouds by merging of two magnetic traps
We demonstrate a method to make mixtures of ultracold atoms that does not
make use of a two-species magneto-optical trap. We prepare two clouds of 87Rb
atoms in distinct magnetic quadrupole traps and mix the two clouds by merging
the traps. For correctly chosen parameters the mixing can be done essentially
without loss of atoms and with only minor heating. The basic features of the
process can be accounted for by a classical simulation of particle
trajectories. Such calculations indicate that mixing of different mass species
is also feasible, opening the way for using the method as a starting point for
making quantum gas mixtures.Comment: 12 pages, 13 figures. Fig. 10 corrected. Fig. 13 updated with more
points and better statistics. A couple of paragraphs rephrased and typos
corrected. References update
Scaling of the Hysteresis Loop in Two-dimensional Solidification
The first order phase transitions between a two-dimensional (2d) gas and the
2d solid of the first monolayer have been studied for the noble gases Ar, Kr
and Xe on a NaCl(100) surface in quasi-equilibrium with the three-dimensional
gas phase. Using linear temperature ramps, we show that the widths of the
hysteresis loops of these transitions as a function of the heating rate, r,
scales with a power law r^alpha with alpha between 0.4 and 0.5 depending on the
system. The hysteresis loops for different heating rates are similar. The
island area of the condensed layer was found to grow initially with a t^4 time
dependence. These results are in agreement with theory, which predicts alpha =
0.5 and hysteresis loop similarity.Comment: 4 pages, 5 figures, Revte
Nova Geminorum 1912 and the Origin of the Idea of Gravitational Lensing
Einstein's early calculations of gravitational lensing, contained in a
scratch notebook and dated to the spring of 1912, are reexamined. A hitherto
unknown letter by Einstein suggests that he entertained the idea of explaining
the phenomenon of new stars by gravitational lensing in the fall of 1915 much
more seriously than was previously assumed. A reexamination of the relevant
calculations by Einstein shows that, indeed, at least some of them most likely
date from early October 1915. But in support of earlier historical
interpretation of Einstein's notes, it is argued that the appearance of Nova
Geminorum 1912 (DN Gem) in March 1912 may, in fact, provide a relevant context
and motivation for Einstein's lensing calculations on the occasion of his first
meeting with Erwin Freundlich during a visit in Berlin in April 1912. We also
comment on the significance of Einstein's consideration of gravitational
lensing in the fall of 1915 for the reconstruction of Einstein's final steps in
his path towards general relativity.Comment: 31 p
Dog Ecology and Dog Rabies Control
Dog populations, like other populations, depend on the availability of resources (food, water, and shelter). Humans either make available or deliberately withhold resources for varying proportions of dog populations. Dog-keeping practices and the duties of responsible ownership vary with the cultural setting. Dog populations often attain densities that allow the species to be a main host of rabies. The epidemiology of dog rabies is not well understood, despite the easy access to dog populations. Today dog rabies is predomina~t in developing countries. In addition to the high rate of exposure of humans to dogs, tradItional medical beliefs and practices are the most important cultural factors that lead to high numbers of cases of human rabies. Dog rabies control programs have been succe~sful in the past, but most are failing today. Program development should follow managenal principles and take into consideration the biology of dog populations as w~ll as. cultural constraints. Elimination of stray dogs IS not an effIcIent means of controllIng eIther the dog population or rabies, but it may create public awarenes
Multiplicative noise: A mechanism leading to nonextensive statistical mechanics
A large variety of microscopic or mesoscopic models lead to generic results
that accommodate naturally within Boltzmann-Gibbs statistical mechanics (based
on ). Similarly, other classes of models
point toward nonextensive statistical mechanics (based on , where the value of the entropic index depends on
the specific model). We show here a family of models, with multiplicative
noise, which belongs to the nonextensive class. More specifically, we consider
Langevin equations of the type , where
and are independent zero-mean Gaussian white noises with
respective amplitudes and . This leads to the Fokker-Planck equation
. Whenever the
deterministic drift is proportional to the noise induced one, i.e., , the stationary solution is shown to be (with and ). This distribution is
precisely the one optimizing with the constraint constant. We also
introduce and discuss various characterizations of the width of the
distributions.Comment: 3 PS figure
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