786 research outputs found
Author-Based Analysis of Conference versus Journal Publication in Computer Science
Conference publications in computer science (CS) have attracted scholarly
attention due to their unique status as a main research outlet unlike other
science fields where journals are dominantly used for communicating research
findings. One frequent research question has been how different conference and
journal publications are, considering a paper as a unit of analysis. This study
takes an author-based approach to analyze publishing patterns of 517,763
scholars who have ever published both in CS conferences and journals for the
last 57 years, as recorded in DBLP. The analysis shows that the majority of CS
scholars tend to make their scholarly debut, publish more papers, and
collaborate with more coauthors in conferences than in journals. Importantly,
conference papers seem to serve as a distinct channel of scholarly
communication, not a mere preceding step to journal publications: coauthors and
title words of authors across conferences and journals tend not to overlap
much. This study corroborates findings of previous studies on this topic from a
distinctive perspective and suggests that conference authorship in CS calls for
more special attention from scholars and administrators outside CS who have
focused on journal publications to mine authorship data and evaluate scholarly
performance
Brain and Lung Abscesses in a 48-year-old Man with Focal and Segmental Glomerulosclerosis.
Focal segmental sclerosis (FSGS) is a common cause of idiopathic nephrotic syndrome in the adult population. A patient aged 48- year-old was admitted for evaluation of azotemia. Renal biopsy showed tip lesion FSGS and acute tubular necrosis. After methyl prednisolone pulse therapy, partial remission occurred, and he was stable with oral prednisolone and cyclosporine. Few months later two serious complications including lung and brain abscess occurred. We describe a case of FSGS with lung and brain abscess, who responded to medical management
Effective Compton Cross Section in Non-Degenerate High Temperature Media
The effective compton cross section in a non-degenerate
plasma() is investigated in a
wide range of temperatures. The results show a decreasing behavior with
temperature especially for . The $may be important in
phenomena like accretion discs or ultra-relativistic blast waves in GRB models,
where the emitted radiation has to pass through a medium containing high energy
electrons.Comment: 12 pages, 7 figure
Population structure of banana shrimp, Penaeus merguiensis De Man, 1888 in the Strait of Hormoz, Persian Gulf
Monthly length frequency data of banana shrimp, Penaeus merguiensis were collected from the coastal waters of the north east of the Persian Gulf, from January 2012 to January 2013. Software package FiSAT was used to analyze the length frequency data. Growth parameters, mortalities, exploitation rate and recruitment pattern were estimated from the carapace length in the area. Based on length – weight relationships, the estimated parameter a was 0.0015 for males and females and b was 2.8015 for males and 2.7852 for females. The estimated growth parameters: L∞=39.5 mm, K=1.8 year^−1 and t0=-0.08 year^−1 for males and L∞=50 mm, K=1.5 year^−1 and t0=-0.09 year^−1 for females. Longevity was estimated 1.67 and 2.00 years for males and females, respectively. The estimated mortality coefficients, were Z=5.9 (4.89 – 6.92) year−1 (α=0.05), M=2.9 year^−1 and F=3.0 year^−1 for males and Z=5.7 (4.94–6.37) year^−1 (α=0.05), M=2.5 year^−1 and F=3.2 year^−1 for females. The length at first capture, Lc estimated from the probability of capture routine was 23.3 mm for males and 24.2 mm for females. Sex ratio (M:F=1.1:1) was significantly different to 1:1. The exploitation rates of shrimp were 0.49 and 0.56 for males and females, respectively which could get higher because the survival of spawning stock after the fishing season is related to environmental factors and has less effect on the next year’s biomass. Recruitment was continued throughout the year but with one major peak in July to November
Fast atom diffraction inside a molecular beam epitaxy chamber, a rich combination
Two aspects of the contribution of grazing incidence fast atom diffraction
(GIFAD) to molecular beam epitaxy (MBE) are reviewed here: the ability of GIFAD
to provide \emph{in-situ} a precise description of the atomic-scale surface
topology, and its ability to follow larger-scale changes in surface roughness
during layer-by-layer growth. Recent experimental and theoretical results
obtained for the He atom beam incident along the highly corrugated direction of the (24) reconstructed GaAs(001) surface are
summarized and complemented by the measurements and calculations for the beam
incidence along the weakly corrugated [010] direction where a periodicity twice
smaller as expected is observed. The combination of the experiment, quantum
scattering matrix calculations, and semiclassical analysis allows in this case
to reveal structural characteristics of the surface. For the in situ
measurements of GIFAD during molecular beam epitaxy of GaAs on GaAs surface we
analyse the change in elastic and inelastic contributions in the scattered
beam, and the variation of the diffraction pattern in polar angle scattering.
This analysis outlines the robustness, the simplicity and the richness of the
GIFAD as a technique to monitor the layer-by-layer epitaxial growth
Blood pressure alterations in burn patients with septic shock under hydrocortisone treatment
Background and Objectives: Hydrocortisone is widely used in septic shock cases resistant to fluid and vasopressor therapy. It may result in increased blood pressure and survival. However the efficacy is no established among patients with severe burn and septic shock. Accordingly it was assessed in this study. Materials and Methods: The patients older than 14 years of age with resistant septic shock were enrolled during one-year period. The hydrocortisone was prescribed 100 mg three times per day and the alterations in systolic and diastolic blood pressures were recorded. Results: Twenty-nine patients were enrolled including 19 men and 10 women. The mean age was 37 ± 19 years and the mean burn surface area was 60 ± 20. Fourteen patients had positive blood culture. The most common isolated microorganism were Pseudomonas aeuroginosa in 34.6(10 cases), and then Acinetobacter in 13.8(4 cases). The infection was from wound in 79 and the remaining 21 had pneumonia. Twenty-one patients had good response to hydrocortisone and the increase in systolic and diastolic blood pressures was significant; but the mortality rate was similar. Conclusion: Treatment with hydrocortisone would result in increase in systolic and diastolic blood pressure in burn patients with resistant septic shock. © 2015, Tehran University of Medical Science. All rights reserved
- …