3,481 research outputs found
Charge sensitivity of the Inductive Single-Electron Transistor
We calculate the charge sensitivity of a recently demonstrated device where
the Josephson inductance of a single Cooper-pair transistor is measured. We
find that the intrinsic limit to detector performance is set by oscillator
quantum noise. Sensitivity better than e is
possible with a high -value , or using a SQUID amplifier. The
model is compared to experiment, where charge sensitivity e and bandwidth 100 MHz are achieved.Comment: 3 page
Praktik Kewirausahaan Gereja
This study aims to examine and describe entrepreneurial practices of the Pentecostal church in alleviating poverty in Wamena. The method in this research is an explanatory sequential mixed method which firstly conducts quantitative research, analyzes the results and then arranges the results to explain them more details with qualitative research. The sample is GPdI Elshaddai Wamena and GPdI Elroi Wamena purposively selected, namely the congregations who did entrepreneurship practices. Data collection techniques are through questionnaires, observation, and interviews. Data is collected and analyzed quantitatively, through the relative frequency distribution table, and described qualitatively.
The results showed 132 GPdI Elshaddai Wamena congregations and 156 GPdI Elroi Wamena congregations had practiced entrepreneurship in the church well. Entrepreunership practices carried out by GPdI Elshaddai Wamena and GPdI Elroi Wamena that have contributed to alleviating poverty in Wamena.
 
Coming Out of Crisis: Patient Experiences in Primary Care in New Orleans, Four Years Post-Katrina
Examines the network of neighborhood clinics funded with federal, state, and local money that emerged after Hurricane Katrina as a model for serving vulnerable populations. Looks at access, communication, chronic illnesses management, and preventive care
How Health Care Reform Can Lower the Costs of Insurance Administration
Examines the sources of U.S. insurance administration costs and estimates potential cost savings from the creation of a national insurance exchange to replace the individual and small-group markets as part of a public-private approach to reform
Composite biasing in Monte Carlo radiative transfer
Biasing or importance sampling is a powerful technique in Monte Carlo
radiative transfer, and can be applied in different forms to increase the
accuracy and efficiency of simulations. One of the drawbacks of the use of
biasing is the potential introduction of large weight factors. We discuss a
general strategy, composite biasing, to suppress the appearance of large weight
factors. We use this composite biasing approach for two different problems
faced by current state-of-the-art Monte Carlo radiative transfer codes: the
generation of photon packages from multiple components, and the penetration of
radiation through high optical depth barriers. In both cases, the
implementation of the relevant algorithms is trivial and does not interfere
with any other optimisation techniques. Through simple test models, we
demonstrate the general applicability, accuracy and efficiency of the composite
biasing approach. In particular, for the penetration of high optical depths,
the gain in efficiency is spectacular for the specific problems that we
consider: in simulations with composite path length stretching, high accuracy
results are obtained even for simulations with modest numbers of photon
packages, while simulations without biasing cannot reach convergence, even with
a huge number of photon packages.Comment: 12 pages, accepted for publication in A&
Cancellation of soft and collinear divergences in noncommutative QED
In this paper, we investigate the behavior of non-commutative IR divergences
and will also discuss their cancellation in the physical cross sections. The
commutative IR (soft) divergences existing in the non-planar diagrams will be
examined in order to prove an all order cancellation of these divergences using
the Weinberg's method. In non-commutative QED, collinear divergences due to
triple photon splitting vertex, were encountered, which are shown to be
canceled out by the non-commutative version of KLN theorem. This guarantees
that there is no mixing between the Collinear, soft and non-commutative IR
divergences
The Comprehensive Congressional Health Reform Bills of 2009: A Look at Health Insurance, Delivery System, and Financing Provisions
Provides an overview of the key provisions of the House and Senate healthcare reform bills that are essential to a high-performance health system. Compares approaches to health insurance reforms, health system reforms, and revenue sources and financing
Diffusion-emission theory of photon enhanced thermionic emission solar energy harvesters
Numerical and semi-analytical models are presented for
photon-enhanced-thermionic-emission (PETE) devices. The models take diffusion
of electrons, inhomogeneous photogeneration, and bulk and surface recombination
into account. The efficiencies of PETE devices with silicon cathodes are
calculated. Our model predicts significantly different electron affinity and
temperature dependence for the device than the earlier model based on a
rate-equation description of the cathode. We show that surface recombination
can reduce the efficiency below 10% at the cathode temperature of 800 K and the
concentration of 1000 suns, but operating the device at high injection levels
can increase the efficiency to 15%.Comment: 5 pages, 4 figure
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