Inpatient versus Outpatient Total Hip Arthroplasty

We conducted a randomized controlled trial to evaluate patients undergoing a total hip arthroplasty (THA) who were discharged from the hospital either on the day of surgery (outpatient) or were admitted overnight following surgery (inpatient). Our primary outcome was the rate of serious adverse events during the first three months postoperatively. Secondary outcome measures included cost, patient satisfaction, functional outcomes, quality of life and pain. We found no statistically significant difference between the two groups in serious adverse events. We found that outpatient THA was less expensive from the perspectives of the hospital and ministry of health; but the difference in cost was balanced by a relatively equivalent increase in indirect expenditures paid by society. No other statistically significant differences were found between groups. Based on the results from this preliminary analysis of a larger ongoing study, outpatient THA is safe and can contribute to significant cost savings

Ensemble Concerts: An Evening of Fun, March 20, 1976

Saturday Evening8:00 p.m.March 20, 1976University Union Auditoriu

A comparison of alternative technology adoption models : the adoption of a CASE tool at a university

Bibliography: leaves 95-105.In a field such as that of Information Systems the emergence of new technologies is one of the only constants. It is therefore necessary, indeed vital, to be able to measure, as well as anticipate, the adoption and diffusion of these new technologies into organisations. For this purpose adoption models came to the fore. Such models include the Technology Acceptance Model (TAM) (Davis, 1989), the Technology Acceptance Model 2 (T AM2) (Venkatesh & Davis, 2000), the Decomposed Theory of Planned Behaviour (DTPB) (Taylor & Todd, 1995b), and the Perceived Characteristics of Innovating model (PCI) (Moore & Benbasat, 1991). Adoption models test the perceptions and attitudes of potential and actual adopters of a new technology. Although all of the adoption models test adoption of a new technology, each tests different aspects of this adoption. Through the comparison of the four adoption models mentioned above, this study determines which constructs mostly strongly explain the adoption of a CASE tool by university students. These constructs are then combined to form a new technology adoption model, the Perceived Characteristics of Technology Adoption CPCTA), which is tested and found to explain a significant degree of variance in the context of CASE tool adoption amongst students at a university

Stress Fibres In Cells From Normal And Dystrophic (bio 146) Hamsters And Identification Of A Desmin-like Protein From Hamster Muscle

The BIO 14.6 line of Syrian hamsters has been a useful model system for Duchenne dystrophy since its introduction (Homburger et al., 1962b). To reduce the effects of genetic background in this model system, a control line (\u27BC\u27) was produced which shares \u3e90% of its genotype with the BIO 14.6 line. These control animals did not differ from random-bred (\u27RB\u27) control hamsters under the investigative techniques used here.;In this study, stress fibres in cultured fibroblast-like cells from muscle and skin were examined by direct staining and by indirect immunofluorescence using antibodies to the muscle proteins (alpha)-actinin, tropomyosin and M-line protein. No consistent differences in stress fibre patterns were seen among cells derived from RB, BIO 14.6, carrier and BC animals.;Organisms and cells across a broad phylogenetic range respond to a brief elevation in temperature by the new or enhanced synthesis of \u27heat-shock proteins\u27 (hsps), which are believed to serve a thermoprotective function. Changes in the cytoskeletal elements in heat-shocked cells have also been reported (Falkner et al., 1981; Thomas et al., 1981). Cultured fibroblasts from RB, BIO 14.6 carrier and BC animals showed synthesis of two hsp groups in response to temperatures above 42(DEGREES)C: a 64 kd doublet (pIs 5.8 and 5.4) and a 25 kd triplet (pIs 6.2, 5.8 and 5.4). These proteins did not show association with the nucleus under the conditions described here. Heat-shock treatment of RB-derived cells induced a change in cytoskeletal morphology; such a change was not seen in BIO 14.6-derived cells.;Antibodies were produced which recognize a 52 kd protein distinct from desmin. These antibodies stained the Z-line when used for immunofluorescence analysis of myofibrils. In preparations from dystrophic animals, however, some myofibrils showed diffuse background staining with conspicuous \u27blank\u27 regions at the Z-line. Abnormal Z-line staining was not seen in preparations from younger (7-10 day) dystrophic animals.;Myofibrils from 7-10 day animals frequently showed a fluorescent doublet in the I-Z region. The significance of the developmental shift in the distribution of the 52 kd protein is not clear at this time

Digital Identity in Mobile Products for Digital Innovation

Mobile computing growth has led to a world connecting people, devices, organisations and appliances. This world of ubiquitous computing is served through multiple digital products and services, which provide value to the user. The user is the central player in this digital landscape and the importance of identifying and understanding the user is significant to the creators of digital products and services, or digital innovation. The purpose of this paper is to explore the relationship between digital identity and digital innovation in the context of mobile computing. Exploring this relationship will help further the understanding of whether the presence of digital identity has a positive influence on digital innovation. The exploratory study was conducted using qualitative and quantitative strategies within an inductive approach in order to understand the concepts of digital identity and digital innovation. The Holmström-Nylen (2015) Framework was amended to measure the presence of digital innovation in the product or service and also to classify the relationship between digital identity and digital innovation. The results identified a series of themes and causalities between the implementation of digital identity and mobile computing for digital product or service. The results also suggested a possible relationship between digital innovation and digital identity, depending on the surrounding organisational factors, however there was not enough conclusive evidence of an enabling role between digital identity and digital product or service innovation

Chemosensory assessment of predation risk by fishes : ecological and social factors affecting learning and use of heterospecific alarm cues

Throughout their lives, prey organisms must balance the tradeoff between fitness-related activities and the risk of predation. To successfully mediate such tradeoffs, prey must have an accurate method to gauge current predation risk. For many aquatic organisms, the use of chemosensory information has been shown to be a ubiquitous and useful tool in mediating predation risk. The chemical cues to which aquatic organisms respond include the odour of known predators and the odour of a damaged conspecific or known or closely related heterospecific. In fishes, the response to damage-released cues from conspecifics or closely related heterospecifics has been shown to be innate, while the response to distantly related unknown heterospecific cues are likely learned. In a series of laboratory and field studies I examined the role of learning in the ability of fathead minnows to respond to damage-released cues of brook stickleback as an indication of predation risk. My results indicate that minnows from a population without stickleback do not recognize stickleback cues as dangerous. However, following the introduction of stickleback, minnows learn to recognize stickleback cues as dangerous. Further study indicated a low ratio of stickleback to minnows in a given population will decrease the likelihood of learning when compared with a similar sized population containing a higher ratio of stickleback to minnows. I also demonstrated that an increase in habitat complexity decreases the ability of minnows to learn to recognize stickleback cues. Studies have further demonstrated that in the face of predation (as indicated by chemical cues from minnows and stickleback) minnows will decrease their antipredator response when in the presence of a fish shoal, especially a shoal of conspecifics. Finally, an examination of the effects of a minnow’s length, body condition and breeding status indicate that morphological parameters can play a significant role in the intensity of response to heterospecific and conspecific damage-released cues. Previous works have demonstrated that behavioural responses to heterospecific damage-released cues increase the probability of the ‘receiver’ surviving a predation event. This has important implications for predator/prey interactions and consequently factors affecting the learning and use of such cues deserve increasing attention from ecologists