364 research outputs found
Eddy formation on a continental slope
We consider a uniform-density ocean in which the depth-independent horizontal velocity is driven by a two-gyre wind. Numerical solutions of the governing vorticity equation reveal that the solutions with a flat ocean bottom differ greatly from those in which a continental shelf and slope are present along the western boundary. In the ocean basin with a western continental shelf, steady inertial circulations readily lose stability to unsteady inertial circulations that spawn eddies. However, eddies do not form in the corresponding solutions for the flat-bottom ocean. Reducing the friction leads to flat-bottom solutions that shed eddies far offshore, but still differ significantly from the corresponding continental-slope solutions, where eddies pinch off near the western boundary
Troubling meanings of "family" for young people who have been in care: from policy to lived experience
This article seeks to trouble the concept of âfamilyâ for young people who have been in out-of-home care, by reflecting on the continuing significance (and troubles) of family relationships beyond childhood. The analysis draws on two cross-national studies in Europe: Beyond Contact, which examined policies and systems for work with families of children in care, and Against All Odds?, a qualitative longitudinal study of young adults who have been in care. Policy discourses that reify and instrumentalize the concept of familyâfor example, through the language of âcontact,â âreunification,â and âpermanenceââneglect the complex temporality of âfamilyâ for young people who have been in care, negotiated and practiced across time and in multiple (and changing) care contexts, and forming part of complex, dynamic and relational identities, and understandings of âbelongingâ for young adults who have been in care
Displaced but not replaced: the impact of e-learning on academic identities in higher education.
Challenges facing universities are leading many to implement institutional strategies to incorporate e-learning rather than leaving its adoption up to enthusiastic individuals. Although there is growing understanding about the impact of e-learning on the student experience, there is less understanding of academicsâ perceptions of e-learning and its impact on their identities. This paper explores the changing nature of academic identities revealed through case study research into the implementation of e-learning at one UK university. By providing insight into the lived experiences of academics in a university in which technology is not only transforming access to knowledge but also influencing the balance of power between academic and student in knowledge production and use, it is suggested that academics may experience a jolt to their âtrajectory of selfâ when engaging with e-learning. The potential for e-learning to prompt loss of teacher presence and displacement as knowledge expert may appear to undermine the ontological security of their academic identity
Tightly integrated singleâ and multiâcrystal data collection strategy calculation and parallelized data processing in JBluIce beamline control system
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/109583/1/S1600576714022730.pd
Automated sampleâscanning methods for radiation damage mitigation and diffractionâbased centering of macromolecular crystals
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/86848/1/S0909049511029918.pd
Costa Rica Rift hole deepened and logged
During Leg 111 of the Ocean Drilling
Program, scientists on the
drilling vessel JOIDES Resolution
studied crustal structure and hydrothermal
processes in the eastern
equatorial Pacific. Leg 111 spent 43
days on its primary objective, deepening
and logging Hole 5048, a deep
reference hole in 5.9-million-year-old
crust 200 km south of the spreading
axis of the Costa Rica Rift. Even before
Leg 111 , Hole 5048 was the deepest
hole drilled into the oceanic crust,
penetrating 274.5 m of sediments and
1,075.5 m of pillow lavas and sheeted
dikes to a total depth of 1,350 m
below sea floor (mbsf). Leg 111 deepened
the hole by 212.3 m to a total
depth of 1,562.3 mbsf (1,287.8 m into
basement), and completed a highly successful suite of geophysical logs
and experiments, including sampling
of borehole waters
Fast fluorescence techniques for crystallography beamlines
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/86817/1/S0021889811016748.pd
A large scale hearing loss screen reveals an extensive unexplored genetic landscape for auditory dysfunction
The developmental and physiological complexity of the auditory system is likely reflected in the underlying set of genes involved in auditory function. In humans, over 150 non-syndromic loci have been identified, and there are more than 400 human genetic syndromes with a hearing loss component. Over 100 non-syndromic hearing loss genes have been identified in mouse and human, but we remain ignorant of the full extent of the genetic landscape involved in auditory dysfunction. As part of the International Mouse Phenotyping Consortium, we undertook a hearing loss screen in a cohort of 3006 mouse knockout strains. In total, we identify 67 candidate hearing loss genes. We detect known hearing loss genes, but the vast majority, 52, of the candidate genes were novel. Our analysis reveals a large and unexplored genetic landscape involved with auditory function
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Surface processes recorded by rocks and soils on Meridiani Planum, Mars: Microscopic Imager observations during Opportunity's first three extended missions
The Microscopic Imager (MI) on the Mars Exploration Rover Opportunity has returned images of Mars with higher resolution than any previous camera system, allowing detailed petrographic and sedimentological studies of the rocks and soils at the Meridiani Planum landing site. Designed to simulate a geologist's hand lens, the MI is mounted on Opportunity's instrument arm and can resolve objects 0.1 mm across or larger. This paper provides an overview of MI operations, data calibration, and analysis of MI data returned during the first 900 sols (Mars days) of the Opportunity landed mission. Analyses of Opportunity MI data have helped to resolve major questions about the origin of observed textures and features. These studies support eolian sediment transport, rather than impact surge processes, as the dominant depositional mechanism for Burns formation strata. MI stereo observations of a rock outcrop near the rim of Erebus Crater support the previous interpretation of similar sedimentary structures in Eagle Crater as being formed by surficial flow of liquid water. Well-sorted spherules dominate ripple surfaces on the Meridiani plains, and the size of spherules between ripples decreases by about 1 mm from north to south along Opportunity's traverse between Endurance and Erebus craters
Genomic, Pathway Network, and Immunologic Features Distinguishing Squamous Carcinomas
This integrated, multiplatform PanCancer Atlas study co-mapped and identified distinguishing
molecular features of squamous cell carcinomas (SCCs) from five sites associated with smokin
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