University of South Australia

About: University of South Australia is a education organization based out in Adelaide, South Australia, Australia. It is known for research contribution in the topics: Population & Context (language use). The organization has 10086 authors who have published 32587 publications receiving 913683 citations. The organization is also known as: The University of South Australia & UniSA.

Distress levels and self-reported treatment rates for medicine, law, psychology and mechanical engineering tertiary students: cross-sectional study.

Abstract: Objective: The aim of this research was to assess tertiary student distress levels with regards to (i) comparisons with normative population data, and (ii) the effects of discipline, year level, and student characteristics. Self-reported treatment rates and level of concern regarding perceived distress were also collected.Method: Students from all six years of an undergraduate medical course were compared with samples from Psychology, Law and Mechanical Engineering courses at the University of Adelaide, Australia. Students participated in one of three studies that were either web-based or paper-based. All studies included Kessler's Measure of Psychological Distress (K10), and questions pertaining to treatment for any mental health problems and concern regarding distress experienced.Results: Of the 955 tertiary students who completed the K10, 48% were psychologically distressed (a K10 score ≥ 22) which equated to a rate 4.4 times that of age-matched peers. The non-health disciplines were significantly more...

Tour guide performance and tourist satisfaction: a study of the package tours in Shanghai.

Abstract: This study examines tour guide performance and its relationship with tourist satisfaction in the context of package tours in Shanghai. A multilayer framework of tourist satisfaction in the package tour context is proposed. Tourist satisfaction was conceptualized to include three aspects/layers: satisfaction with guiding service, satisfaction with tour services, and satisfaction with the overall tour experience. Tour guide performance was found to have a significant direct effect on tourist satisfaction with guiding service and an indirect effect on satisfaction with tour services and with tour experience. Satisfaction with guiding service positively affected satisfaction with tour services but showed no direct effect on satisfaction with the overall tour experience. However, indirect effect of satisfaction with guiding service on satisfaction with tour experience mediated by satisfaction with tour services was significant. Implications for tour operators and government agencies are discussed.

Physical Activity and Sedentary Behaviors in People With Stroke Living in the Community: A Systematic Review

Abstract: Background Regular physical activity is vital for cardiovascular health. Time spent in sedentary behaviors (eg, sitting, lying down) also is an independent risk factor for cardiovascular disease. The pattern in which sedentary time is accumulated is important—with prolonged periods of sitting time being particularly deleterious. People with stroke are at high risk for cardiovascular disease, including recurrent stroke. Purpose This systematic review aimed to update current knowledge of physical activity and sedentary behaviors among people with stroke living in the community. A secondary aim was to investigate factors associated with physical activity levels. Data Sources The data sources used were MEDLINE, Cumulative Index to Nursing and Allied Health Literature (CINAHL), Allied and Complimentary Medicine Database (AMED), EMBASE, and the Cochrane Library. Study Selection Studies involving people with stroke living in the community and utilizing objective measures of physical activity or sedentary behaviors were included. Data Extraction Data were extracted by one reviewer and checked for accuracy by a second person. Data Synthesis Twenty-six studies, involving 983 participants, were included. The most common measure of activity was steps per day (22 studies), which was consistently reported as less than half of age-matched normative values. Only 4 studies reported on sedentary time specifically. No studies described the pattern by which sedentary behaviors were accumulated across the day. Walking ability, balance, and degree of physical fitness were positively associated with higher levels of physical activity. Limitations This review included only studies of people living in the community after stroke who were able to walk, and the majority of included participants were aged between 65 and 75 years of age. Conclusions Little is known about the time people with stroke spend being sedentary each day or the pattern in which sedentary time is accumulated. Studies using objective, reliable, and valid measures of sedentary time are needed to further investigate the effects of sedentary time on the health of people with stroke.

Rayleigh fading multi-antenna channels

Abstract: Information theoretic properties of flat fading channels with multiple antennas are investigated. Perfect channel knowledge at the receiver is assumed. Expressions for maximum information rates and outage probabilities are derived. The advantages of transmitter channel knowledge are determined and a critical threshold is found beyond which such channel knowledge gains very little. Asymptotic expressions for the error exponent are found. For the case of transmit diversity closed form expressions for the error exponent and cutoff rate are given. The use of orthogonal modulating signals is shown to be asymptotically optimal in terms of information rate.