3,539 research outputs found
The development of the Islamist movement in Algeria.
SIGLEAvailable from British Library Document Supply Centre-DSC:DX189178 / BLDSC - British Library Document Supply CentreGBUnited Kingdo
A Growth Curve Analysis of Mandatory Student Athletics Fees
This study used growth curve modeling to estimate the growth trajectory of mandatory student athletics fees at public NCAA Division I universities from 2004–2016. We specifically focused on three measures of athletics fees; total athletics fees, athletics fees per FTE, and athletics fees as a percentage of total student costs. We found that in general the growth trajectory of athletics fees was positive, but that the rate of growth has declined over the years. We also found that on average less than 5% of student costs are directly attributable to athletics fees and that the growth trajectory of athletics fees differs significantly based on NCAA Division I subdivision affiliation. These findings have implications for policymakers and commentators interested in the role athletics fees play in college student costs
First detection of phase-dependent colliding wind X-ray emission outside the Milky Way
After having reported the detection of X-rays emitted by the peculiar system
HD5980, we assess here the origin of this high-energy emission from additional
X-ray observations obtained with XMM-Newton. This research provides the first
detection of apparently periodic X-ray emission from hot gas produced by the
collision of winds in an evolved massive binary outside the Milky Way. It also
provides the first X-ray monitoring of a Luminous Blue Variable only years
after its eruption and shows that the dominant source of the X-rays is not
associated with the ejecta.Comment: 13 pages, 3 figures and 1 table, accepted for publication in ApJ
(letters
The Possible Transition From Glacial Surge to Ice Stream on Vavilov Ice Cap
An edited version of this paper was published by AGU. Copyright 2019 American Geophysical Union.Surge‐type glaciers typically undergo cyclical flow instability due to mass accumulation; however, some recent glacier surges have caused irreversible ice loss in a short period. At Vavilov Ice Cap, Russia, surge‐like behavior initiated in 2013 and by spring 2019 the ice cap had lost 9.5 Gt of ice (11% mass of the entire basin). Using time series of surface elevation and glacier velocity derived from satellite optical and synthetic‐aperture radar imagery, we identify a shift of flow pattern starting in 2017 when shear margins formed within the grounded marine piedmont fan. Multiple summer speedups correlate with warmer summers during 2015–2019 and suggest that surface melt may access the subglacial environment. Force balance analysis and examination of the Péclet number show that glacier thinning propagated upstream in 2016–2017, and diffusion became a significant dynamic response to thinning perturbations. Our results suggest that the glacier has entered a new ice stream‐like regime
Transcriptome Analysis of Targeted Mouse Mutations Reveals the Topography of Local Changes in Gene Expression.
The unintended consequences of gene targeting in mouse models have not been thoroughly studied and a more systematic analysis is needed to understand the frequency and characteristics of off-target effects. Using RNA-seq, we evaluated targeted and neighboring gene expression in tissues from 44 homozygous mutants compared with C57BL/6N control mice. Two allele types were evaluated: 15 targeted trap mutations (TRAP); and 29 deletion alleles (DEL), usually a deletion between the translational start and the 3' UTR. Both targeting strategies insert a bacterial beta-galactosidase reporter (LacZ) and a neomycin resistance selection cassette. Evaluating transcription of genes in +/- 500 kb of flanking DNA around the targeted gene, we found up-regulated genes more frequently around DEL compared with TRAP alleles, however the frequency of alleles with local down-regulated genes flanking DEL and TRAP targets was similar. Down-regulated genes around both DEL and TRAP targets were found at a higher frequency than expected from a genome-wide survey. However, only around DEL targets were up-regulated genes found with a significantly higher frequency compared with genome-wide sampling. Transcriptome analysis confirms targeting in 97% of DEL alleles, but in only 47% of TRAP alleles probably due to non-functional splice variants, and some splicing around the gene trap. Local effects on gene expression are likely due to a number of factors including compensatory regulation, loss or disruption of intragenic regulatory elements, the exogenous promoter in the neo selection cassette, removal of insulating DNA in the DEL mutants, and local silencing due to disruption of normal chromatin organization or presence of exogenous DNA. An understanding of local position effects is important for understanding and interpreting any phenotype attributed to targeted gene mutations, or to spontaneous indels
ASEE Support to Student Veterans: Results of a 2018 ASEE Leadership Roundtable
As industry demands for qualified science, technology, engineering, and mathematics (STEM) workers continue to increase, supporting diverse groups of students towards success in STEM may help mitigate future shortfalls in the STEM workforce. Education benefits like the post 9/11 GI Bill may provide a viable pathway for increasing the STEM-qualified, engineering technician, engineering technologist, and engineer (ETETE) workforce through the nation’s veteran population. Supporting student veterans along ETETE pathways may involve three key tasks: 1) building early awareness of ETETE pathways; 2) ensuring academic recognition for prior military work experience; and 3) providing seamless support from government agencies, academic institutions, and industry. Student veterans follow non-traditional education pathways and bring with them a wealth of diverse life experiences. Correspondingly, the growing number of veterans pursuing STEM degrees, and the diversity of this underserved group of students continues to gain the attention of faculty, administrators, and national organizations. To bolster ASEE’s support for many diverse groups to include student veterans in ETETE pathways, the ASEE president commissioned a series of leadership roundtables during the 2018 ASEE National Conference and Exposition. There, roundtables were tasked with making recommendations regarding how ASEE can support engineering education, relevant diversity research, and engagement of these diverse communities in society activities.
The purpose of this paper is to report the results of the 2018 ASEE Student Veteran Leadership roundtable. This roundtable brought together a diverse group of veterans, engineering educators, and engineering student veteran researchers. Through a series of ideation exercises and discussions, the group examined the challenges student veterans traditionally face, on-going support initiatives at their home institutions, and recommended actions for ASEE to pursue in the years ahead. The topics discussed during the panel are related to previous research about the challenges faced by veteran students beyond ETETE career paths. A series of novel initiatives are presented that may assist ASEE and university administrators more broadly in adopting a fresh approach to veteran student support
Informal Caregiving for Diabetes and Diabetic Complications Among Elderly Americans
Objectives: Little is known regarding the amount of time spent by unpaid caregivers providing help to elderly individuals for disabilities associated with diabetes mellitus (DM). We sought to obtain nationally representative estimates of the time, and associated cost, of informal caregiving provided to the elderly with diabetes, and to determine the complications of DM that contribute most significantly to the subsequent need for informal care. Methods: We estimated multivariable regression models using data from the 1993 Asset and Health Dynamics (AHEAD) Study, a nationally representative survey of people aged 70 or older (N=7,443), to determine the weekly hours of informal caregiving and imputed cost of caregiver time for community-dwelling elderly with and without a diagnosis of DM. Results: Those without DM received an average of 6.1 hours per week of informal care, those with DM taking no medications received 10.5 hours, those with DM taking oral medications received 10.1 hours, and those with DM taking insulin received 14.4 hours of care (P
Malondialdehyde-acetaldehyde (MAA) modified proteins induce pro-inflammatory and pro-fibrotic responses by liver endothelial cells
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