1,721,030 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Physical activity behaviours of persons with HIV and AIDS in low-income populations: The design of a context-sensitive randomised control trial
No full textPhilosophiae Doctor - PhDThe Human immunodeficiency virus (HIV) and acquired Immunodeficiency syndrome (AIDS) are serious health issues that continue to affect many nations. Specifically, the sub-Saharan African region has the highest prevalence of HIV and AIDS worldwide. Africans living in informal settlements or townships have the highest prevalence of HIV in South Africa. Persons of low socioeconomic status (SES) in general become socialised into unhealthy behaviours and risk factors at early ages, and experience poor health outcomes. Physical activity (PA) is one cost-effective, non-pharmacological approach that has been reported as conjunctive therapy for HIV to effectively address these impairments.
Aim: The aim of the study was to develop a contextualized intervention that promotes PA among persons living with HIV and AIDS (PLWHA) of low SES.
Methods: A mixed methods approach was used. Studies included (1) a systematic review which assessed (a) specific and useful intervention techniques that were previously used in successful PA interventions (b) relevant behaviour change theories used to develop the intervention content, (2) a narrative review which examined the available literature on PA, social support and SES with a view to inform the design of effective PA interventions for PLWHA of low SES, (3) a cross sectional study which aimed at determining if age, body weight, height, gender, waist-to-hip ratio (WHR), educational attainment, employment status, CD4+ cell count, and body mass index (BMI) could predict overall PA among PLWHA of low SES in Cross roads Township in the Western Cape Province, South Africa (4) a cross-sectional study which (a) examined the PA profile of PLWHA of low SES based on PA domains and intensity and (b) determined whether employment status and level of education can predict PA among PLWHA of low SES in Cross roads Township in the Western Cape Province, South Africa (5) a mixed methods study which investigated the benefits and barriers of PA for HIV-positive women of low SES using the Exercise Benefits/Barriers Scale and focus group discussions, (6) a study which sought to develop a contextualised intervention for promoting PA among PLWHA of low SES and (7) a crossover study conducted at a community centre caring for HIV positive Black African Xhosa-speaking women of low SES in Nyanga Township in the Western Cape Province in South Africa.
Results: The systematic literature review showed that the following techniques, namely, ‘provide feedback on performance’, ‘goal setting (behaviour)’, and ‘plan social support/social change’ were the most frequently used behavioural change techniques in interventions focusing on promoting PA for the management of chronic diseases amongst individuals of low SES. The review also showed that the Transtheoretical model of behaviour change and the Social Cognitive theory were the common theoretical frameworks of most study interventions
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
The determinants of falls among the elderly living in long-term care facilities in the City of Cape Town
No full textBackground: Falls are a common health burden with a multi-factorial origin causing physical, psychological, and social problems for the elderly and the society at large, especially within low- and middle-income countries, such as South Africa. Aim: Therefore, the aim of the study is to identify the determinants of falls in the elderly who are living in various long-term care (retirement) facilities in the City of Cape Town, South Africa. Methods: This study used the social-ecological theory, which functions on multiple levels in the study, interacting on an individual level, as well as recognising the impact of the environment. The study used a quantitative, cross-sectional, and descriptive design to investigate the elderly, aged 60 years and older, living in retirement facilities in the City of Cape Town. A total of 258 male and female participants were recruited using convenient sampling. A researcher-generated and self-administered questionnaire, based on the following sociodemographic characteristics, namely, age, gender, educational level, marital status, and medical history, was used for data collection in the study. The Fall Risk Assessment Tool, the Berg Balance Scale, the Dynamic Gait Index, the Timed Up-and-Go test, and the Mini Mental State Examination were the research instruments used in the study. The WHO COVID-19 safety protocol was observed throughout the period of physical testing of the participants
Prevalence of coronary artery disease risk factors in Firefighters in the City of Cape Town fire and rescue service
Full text linkMagister Artium (Sport, Recreation and Exercise Science) - MA(SRES)Over 45% of firefighter deaths are due to a sudden cardiac event caused by underlying coronary
artery disease (CAD) risk factors that can be prevented through adequate CAD risk factor
screening and management. The aim of the study was to determine the prevalence of CAD risk
factors in firefighters in the City of Cape Town and the relationship between the various CAD
risk factors. This study used a quantitative cross-sectional, descriptive and correlational design.
A total of 124 full-time firefighters of the City of Cape Town (CoCT) Fire and Rescue Service
were conveniently recruited to participate in the study, including males and females of all
ethnicities. Coronary artery disease risk factor information was obtained with a CAD risk factor
assessment form, including, past medical history, smoking status, physical activity behaviour,
ethnicity/race, age and gender
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