4,146 research outputs found
The Legal Aspects of Health Care Joint Ventures
Increasingly, health care providers have entered into joint ventures in an attempt to maximize revenues and effectively respond to the cost containment incentives established under the Medicare and Medicaid programs. This article describes the various organizational formats that have been adopted by health care joint ventures, and explores the legal issues created by federal and state regulation of this area
Vitamin D in Australia : issues and recommendations
BACKGROUND A significant number of Australians and people from specific groups within the community are suffering from vitamin D deficiency. It is no longer acceptable to assume that all people in Australia receive adequate vitamin D from casual exposure to sunlight.OBJECTIVE This article provides information on causes, consequences, treatment and prevention of vitamin D deficiency in Australia. DISCUSSION People at high risk of vitamin D deficiency include the elderly, those with skin conditions where avoidance of sunlight is required, dark skinned people (particularly women during pregnancy or if veiled) and patients with malabsorption, eg. coeliac disease. For most people, deficiency can be prevented by 5–15 minutes exposure of face and upper limbs to sunlight 4–6 times per week. If this is not possible then a vitamin D supplement of at least 400 IU* per day is recommended. In cases of established vitamin D deficiency, supplementation with 3000-5000 IU per day for at least 1 month is required to replete body stores. Increased availability of larger dose preparations of cholecalciferol would be a useful therapy in the case of severe deficiencies. * 40 IU (international units) = 1 µg<br /
THE FUTURE OF INFORMATION SYSTEMS AS AN ACADEMIC FIELD: YOUR FATE IN 1998
The academic study of information systems is dynamic and exciting. It tends to have very fluid boundaries. Researchers in information systems venture into problem areas associated with such diverse fields as computer science, communications, cognitive psychology, and sociology. Information systems are studied in the context of innovation, organizational change, and competitive advantage. The changing technology provides new and revisited opportunities for investigation and problem solving. Until quite recently, the information systems faculty were the custodians in schools of management of most of the technical knowledge of organizational computing. That technical knowledge is being rapidly diffused to the entire faculty. Faculty in accounting at one time fled from computers; they now embrace them. The same is true of other functional areas in schools of management. What will happen to the academic field of information systems when the computer expertise is shared by most faculty members
Counter Chemotactic Flow in Quasi-One-Dimensional Path
Quasi-one-dimensional bidirectional particle flow including the effect of
chemotaxis is investigated through a modification of the
John-Schadschneider-Chowdhury-Nishinari model. Specifically, we permit multiple
lanes to be shared by both directionally traveling particles. The relation
between particle density and flux is studied for several evaporation rates of
pheromone, and the following results are obtained: i) in the
low-particle-density range, the flux is enlarged by pheromone if the pheromone
evaporation rate is sufficiently low, ii) in the high particle-density range,
the flux is largest at a reasonably high evaporation rate and, iii) if the
evaporation rate is at the level intermediate between the above two cases, the
flux is kept small in the entire range of particle densities. The mechanism of
these behaviors is investigated by observing the spatial-temporal evolution of
particles and the average cluster size in the system.Comment: 4 pages, 9 figure
Counting calories in cormorants : dynamic body acceleration predicts daily energy expenditure measured in pelagic cormorants
The doubly-labelled water assays and accelerometers were paid for by the authors. Funding to reach Middleton Island was supported through the Animal Behaviour Society Research Grant and the Northern Scientific Training Program of Indigenous and Northern Affairs Canada.Peer reviewedPublisher PD
Know the Star, Know the Planet. II. Speckle Interferometry of Exoplanet Host Stars
A study of the host stars to exoplanets is important to understanding their
environment. To that end, we report new speckle observations of a sample of
exoplanet host primaries. The bright exoplanet host HD 8673 (= HIP 6702) is
revealed to have a companion, although at this time we cannot definitively
establish the companion as physical or optical. The observing lists for planet
searches and for these observations have for the most part been pre-screened
for known duplicity, so the detected binary fraction is lower than what would
otherwise be expected. Therefore, a large number of double stars were observed
contemporaneously for verification and quality control purposes, to ensure the
lack of detection of companions for exoplanet hosts was valid. In these
additional observations, ten pairs are resolved for the first time and sixty
pairs are confirmed. These observations were obtained with the USNO speckle
camera on the NOAO 4m telescopes at both KPNO and CTIO from 2001 to 2010.Comment: 2 figures, 3 table
Justifications-on-demand as a device to promote shifts of attention associated with relational thinking in elementary arithmetic
Student responses to arithmetical questions that can be solved by using arithmetical structure can serve to reveal the extent and nature of relational, as opposed to computational thinking. Here, student responses to probes which require them to justify-on-demand are analysed using a conceptual framework which highlights distinctions between different forms of attention. We analyse a number of actions observed in students in terms of forms of attention and shifts between them: in the short-term (in the moment), medium-term (over several tasks), and long-term (over a year). The main factors conditioning studentsÂŽ attention and its movement are identified and some didactical consequences are proposed
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