3,482 research outputs found
Mining Academic Publications to Predict Automation
This paper proposes a novel framework of predicting future technological change. Using abstracts of academic publications available in the Microsoft Academic graph, co-occurrence matrices are generated to indicate how often occupation and technological terms are referenced together. This matrices are used in linear regression models to predict future co-occurrence of occupations and technologies with a relatively high degree of accuracy as measured through the mean squared error of the models. While this work is unable to link the co-occurrences found in academic publications to automation in the labor force due to a dearth of automation data, future work conducted when such data is available could apply a similar approach with the aim of predicting automation from trends in academic research and publications
Exploring The Sleeping Experiences Of Shiftwork Nurses
Shiftwork scheduling in nursing can lead to diminished health status, quality of life and job dissatisfaction, and it can contribute significantly to decreases in the quality of patient care. In light of the current nursing shortage, and the increasing need for healthcare professionals and services in the coming years, it is imperative that nursing administrators focus on identifying and implementing interventions that counteract the deleterious effects of shiftwork now. This investigation was conducted to explore the sleeping experiences of shiftwork nurses. A convenience sample of 69 (N = 69) licensed nurses working day shift, evenings, nights and rotating shifts at a Midwestern Community Hospital were studied using a structured sleep measurement tool developed by Dr. Daniel Buysse (1989). Statistical findings indicated a significant difference between the groups of nurses for sleep quality F (3, 65) = 2.963,p .039 and sleep duration (3, 65) = 4.658,p .005. Evening shift nurses in this investigation were found to incur the poorest sleep quality and night shift nurses the poorest sleep duration. The sleeping experience of shiftwork nurses remains an important issue, therefore further studies are needed that would explore larger and more diverse populations of shiftwork nurses
Florida, Iowa, and the National Balance of Power, 1845
To Floridians, the admission of their state to the Union is an event in which interest arises as a matter of course from local and state pride and from general historical awareness of the times and circumstances. To Iowans, the event is of similar interest because of the pairing of the two states in the same act of admission. To the historically minded in general, the occasion provides a convenient focus for reconsidering some of the chief crosscurrents of national politics in the 1840\u27s
The Civil War Letters of August Henry Mathers
The writer of the letters which follow was born in Monticello, Florida, on April 25, 1825, the son of William Henry Mathers, Jr., and Elizabeth Clarke Mathers. The details of his early education are not known. He was married on October 28, 1848, to Mary Ann Cooper, daughter of Dr. James A. Cooper, originally of Farmington, Georgia, and Elizabeth White Cooper. The young couple lived a while in Madison, Florida, before removing to Micanopy where Mathers, together with his father-m-law, opened a drug store in 1853, known in later years as the “Old Reliable Micanopy Drug Store.
Florida and Iowa: A Contemporary View
Within the span of one generation after the admission of Florida and Iowa to the Union, the citizens of the two states confronted each other in the awful strife of the Civil War. Portents of this bitter separation had been discernable in the birthing of the states, but who could have said with assurance that these two frontier communities, having so many more roots and inheritances in common than they had fatal divergencies, would shortly stand drawn in battle array against each other? Regardless of their common institutional origins, the two communities came to subordinate themselves to, and form a part of, the emerging realities of North and South, and played the roles between 1861 and 1865 which larger events thrust upon them
Flight test investigation of certification issues pertaining to general-aviation-type aircraft with natural laminar flow
Development of Natural Laminar Flow (NLF) technology for application to general aviation-type aircraft has raised some question as to the adequacy of FAR Part 23 for certification of aircraft with significant NLF. A series of flight tests were conducted with a modified Cessna T210R to allow quantitative comparison of the aircraft's ability to meet certification requirements with significant NLF and with boundary layer transition fixed near the leading edge. There were no significant differences between the two conditions except an increasing in drag, which resulted in longer takeoff distances and reduced climb performance
Influence of UV radiation from a massive YSO on the chemistry of its envelope
We have studied the influence of far ultraviolet (UV) radiation from a
massive young stellar object (YSO) on the chemistry of its own envelope by
extending the models of Doty et al. (2002) to include a central source of UV
radiation. The models are applied to the massive star-forming region AFGL 2591
for different inner UV field strengths. Depth-dependent abundance profiles for
several molecules are presented and discussed. We predict enhanced column
densities for more than 30 species, especially radicals and ions. Comparison
between observations and models is improved with a moderate UV field incident
on the inner envelope, corresponding to an enhancement factor G0~10-100 at 200
AU from the star with an optical depth tau~15-17. Subtle differences are found
compared with traditional models of Photon Dominated Regions (PDRs) because of
the higher temperatures and higher gas-phase H2O abundance caused by
evaporation of ices in the inner region. In particular, the CN/HCN ratio is not
a sensitive tracer of the inner UV field, in contrast with the situation for
normal PDRs: for low UV fields, the extra CN reacts with H2 in the inner dense
and warm region and produces more HCN. It is found that the CH+ abundance is
strongly enhanced and grows steadily with increasing UV field. High-J lines of
molecules like CN and HCN are most sensitive to the inner dense region where UV
radiation plays a role. Thus, even though the total column density affected by
UV photons is small, comparison of high-J and low-J lines can selectively trace
and distinguish the inner UV field from the outer one. In addition, future
Herschel-HIFI observations of hydrides can sensitively probe the inner UV
field.Comment: Accepted for publication in A&A. 13 pages, 10 figure
Hole Spin Mixing in InAs Quantum Dot Molecules
Holes confined in single InAs quantum dots have recently emerged as a
promising system for the storage or manipulation of quantum information. These
holes are often assumed to have only heavy-hole character and further assumed
to have no mixing between orthogonal heavy hole spin projections (in the
absence of a transverse magnetic field). The same assumption has been applied
to InAs quantum dot molecules formed by two stacked InAs quantum dots that are
coupled by coherent tunneling of the hole between the two dots. We present
experimental evidence of the existence of a hole spin mixing term obtained with
magneto-photoluminescence spectroscopy on such InAs quantum dot molecules. We
use a Luttinger spinor model to explain the physical origin of this hole spin
mixing term: misalignment of the dots along the stacking direction breaks the
angular symmetry and allows mixing through the light-hole component of the
spinor. We discuss how this novel spin mixing mechanism may offer new spin
manipulation opportunities that are unique to holes.Comment: 13 pages, 9 figure
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