1,035 research outputs found
Knowledge and Skills of Emergency Care During Disaster for Community Health Volunteers: a Literature Review
Background: Nowadays, disaster preparedness and responses are essential for everyone to be involved since the disaster becomes increasing. The Community Health Volunteers (CHVs) in particular are the key partners required adequately prepared in emergency care during disaster event. Purpose: The study aims to examine the essential knowledge and skills of emergency care during natural disaster for CHVs. Method: The reviews published during 2000 and 2011 searching from PubMed, Science Direct, CINAHL, ProQuest Medical Library were conducted. Result: Twenty-four articles and documents related to community-based disaster preparedness programs were intensively reviewed. Based on the review, six components of knowledge and skills for emergency care in natural disaster for CHVs are required including 1) early warning, 2) disaster triage, 3) first aid, 4) search and rescue, 5) logistic and communication, and 6) team organizations. Conclusion: There was a few studies focusing on the emergency care in disaster management and some factors related to knowledge and skills were shown. It is therefore recommended that the current CHVs' knowledge and skills should be explored in order to assist people in their community following disaster event when professional responders are not immediately available to help
Non-Linear Effects in Resonant Tunneling; Bistabilities and Self-Sustained Oscillating Currents
We study non-linear phenomena in double barrier heterostructures. Systems in
3D under the effect of an external magnetic field along the current and 1D
systems are analyzed. Non-linearities are reflected in the I-V characteristic
curve as bistabilities, instabilities and time dependent oscillations of the
currents. The nature of the non-linear behavior depends upon the parameters
that define the system.Comment: 3 pages, 2 figures, accepted for publication in Superlattices and
Microstructure
Long-Lived Non-Equilibrium Interstitial-Solid-Solutions in Binary Mixtures
We perform particle resolved experimental studies on the heterogeneous
crystallisation process of two compo- nent mixtures of hard spheres. The
components have a size ratio of 0.39. We compared these with molecular dynamics
simulations of homogenous nucleation. We find for both experiments and
simulations that the final assemblies are interstitial solid solutions, where
the large particles form crystalline close-packed lattices, whereas the small
particles occupy random interstitial sites. This interstitial solution
resembles that found at equilibrium when the size ratios are 0.3 [Filion et
al., Phys. Rev. Lett. 107, 168302 (2011)] and 0.4 [Filion, PhD Thesis, Utrecht
University (2011)]. However, unlike these previous studies, for our system sim-
ulations showed that the small particles are trapped in the octahedral holes of
the ordered structure formed by the large particles, leading to long-lived
non-equilibrium structures in the time scales studied and not the equilibrium
interstitial solutions found earlier. Interestingly, the percentage of small
particles in the crystal formed by the large ones rapidly reaches a maximum of
around 14% for most of the packing fractions tested, unlike previous
predictions where the occupancy of the interstitial sites increases with the
system concentration. Finally, no further hopping of the small particles was
observed
Selfconsistent hybridization expansions for static properties of the Anderson impurity model
By means of a projector-operator formalism we derive an approximation based
on a self consistent hybridization expansion to study the ground state
properties of the Anderson Impurity model. We applied the approximation to the
general case of finite Coulomb repulsion , extending previous work with the
same formalism in the infinite- case. The treatment provides a very accurate
calculation of the ground state energy and their related zero temperature
properties in the case in which is large enough, but still finite, as
compared with the rest of energy scales involved in the model. The results for
the valence of the impurity are compared with exact results that we obtain from
equations derived using the Bethe ansatz and with a perturbative approach. The
magnetization and magnetic susceptibility is also compared with Bethe ansatz
results. In order to do this comparison, we also show how to regularize the
Bethe ansatz integral equations necessary to calculate the impurity valence,
for arbitrary values of the parameters.Comment: 8 pages, 5 figure
Effect of black caarbon on the growth, development and evapotranspriration of maize
Abstract. The effect of soot on certain parameters of maize was analysed. We applied low rates of soot (3
gm–2week–1) with a motorised sprayer. The effect of soot on evapotranspiration was tested on plants
grown in evapotranspirometer (ET). Soot pollution had no influence on maize growth and development.
Leaf withering after full maturity, however, was delayed by the presence of soot. The ability of soot to
absorb irradiation and thus increase leaf surface temperatures led to an increase of 4% in the annual
evapotranspiration sum. Soot pollution reduced dry matter (DM) on the rainfed plots (8.8 %), but not in
the ET tanks. In the ET tanks, soot had no significant influence on either the stalk or the grain DM,
though slight reductions were recorded. On the non-irrigated plot there was 12.4 % reduction in grain dry
matter in response to pollution. Supplementary water supplies mitigated the plant damage caused by soot.
A further advantage was detected in the number of deformed ears
Kondo and Dicke effect in quantum-dots side coupled to a quantum wire
Electron tunneling through quantum-dots side coupled to a quantum wire, in
equilibrium and nonequilibrium Kondo regime, is studied. The mean-field
finite- slave-boson formalism is used to obtain the solution of the problem.
We have found that the transmission spectrum shows a structure with two
anti-resonances localized at the renormalized energies of the quantum dots. The
DOS of the system shows that when the Kondo correlations are dominant there are
two Kondo regimes with its own Kondo temperature. The above behavior of the DOS
can be explained by quantum interference in the transmission through the two
different resonance states of the quantum dots coupled to common leads. This
result is analogous to the Dicke effect in optics. We investigate the many body
Kondo states as a function of the parameters of the system.Comment: 5 figures. To appear in Phys. Rev.
Cross Border Business Cycle Impacts on the El Paso Housing Market
There is comparatively little empirical evidence regarding the impacts of cross border business cycle fluctuations on metropolitan housing markets located near international boundaries. This study examines the impacts of economic conditions in Mexico on sales of existing single-family houses in El Paso, Texas. Anecdotal evidence suggests that these impacts are fairly notable. Annual frequency data from the University of Texas at El Paso Border Region Modeling Project are used to test this possibility. Results indicate that solid empirical evidence of such a linkage is elusive.Business Cycles, Border Housing Markets
An Exploratory Study of Forces and Frictions affecting Large-Scale Model-Driven Development
In this paper, we investigate model-driven engineering, reporting on an
exploratory case-study conducted at a large automotive company. The study
consisted of interviews with 20 engineers and managers working in different
roles. We found that, in the context of a large organization, contextual forces
dominate the cognitive issues of using model-driven technology. The four forces
we identified that are likely independent of the particular abstractions chosen
as the basis of software development are the need for diffing in software
product lines, the needs for problem-specific languages and types, the need for
live modeling in exploratory activities, and the need for point-to-point
traceability between artifacts. We also identified triggers of accidental
complexity, which we refer to as points of friction introduced by languages and
tools. Examples of the friction points identified are insufficient support for
model diffing, point-to-point traceability, and model changes at runtime.Comment: To appear in proceedings of MODELS 2012, LNCS Springe
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