1,721,004 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
Sexual Behaviour and Practices Among Adolescent Blood Donors in Harare and Masvingo Provinces, Zimbabwe
No full textThe incidence of HIV infection is increasing among Zimbabwean adolescent blood donors. Since this group contributes around 70% of total blood collections, the increase may pose future public health challenges such as lack of adequate and safe blood. Previous research on this group observed a positive association between history of sexually transmitted infections (STIs) and HIV. However, previous study designs suffered from both a dearth of data on sexual behaviour and their inability to provide a platform for adolescent blood donors to discuss the factors which may impact on their ability to protect themselves against HIV. This study sought to describe sexual behaviour and practices among adolescent blood donors as well as the contextual factors shaping such behaviour. In this qualitative study, 10 adolescent participants and four key informants were purposively selected. Semi-structured interviews were carried out in 2013 in both Harare and Masvingo, Zimbabwe. Data were categorised both manually and using the NVivo software before thematic analysis was undertaken. All except one adolescent participant were regular donors. The number of previous donations given ranged from one to nineteen. Key informants had between two and 27 years’ experience of working in HIV-related clinical and counselling services. The majority (n=7) of adolescent blood donors were practising sexual abstinence. Social status of being blood donors, together with the knowledge that all donated blood is tested for HIV were protective against risky sexual behaviour. However, socio-economic and cultural factors were reported to override this protective effect. Half the number of adolescent participants reported acceptability of unprotected sex if they had sex with other blood donors, as they perceived a low risk of HIV infection in these individuals. Contextual factors; including gender and age imbalances, economic deprivation, partying, pressure for sex on female students from some male lecturers who promise them good grades, inaccessibility of condoms and lack of practical skills on condom use may put adolescent donors at risk of HIV. Socio-economic and cultural factors make it difficult for adolescent donors to make safe behaviour choices. This suggests that behavioural change models (ABC model), are unlikely to be effective in reducing HIV incidence in this group. Ensuring financial security, especially among female adolescents, acknowledging adolescents as sexually active beings and making them aware of the risk of other STIs which may be prevented by using condoms are likely to have an impact in ensuring a safe and consistent pool of adolescent blood donors in Zimbabwe
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
Sexual Behaviour and Practices Among Adolescent Blood Donors in Harare and Masvingo Provinces, Zimbabwe
No full textThe incidence of HIV infection is increasing among Zimbabwean adolescent blood donors. Since this group contributes around 70% of total blood collections, the increase may pose future public health challenges such as lack of adequate and safe blood. Previous research on this group observed a positive association between history of sexually transmitted infections (STIs) and HIV. However, previous study designs suffered from both a dearth of data on sexual behaviour and their inability to provide a platform for adolescent blood donors to discuss the factors which may impact on their ability to protect themselves against HIV. This study sought to describe sexual behaviour and practices among adolescent blood donors as well as the contextual factors shaping such behaviour. In this qualitative study, 10 adolescent participants and four key informants were purposively selected. Semi-structured interviews were carried out in 2013 in both Harare and Masvingo, Zimbabwe. Data were categorised both manually and using the NVivo software before thematic analysis was undertaken. All except one adolescent participant were regular donors. The number of previous donations given ranged from one to nineteen. Key informants had between two and 27 years’ experience of working in HIV-related clinical and counselling services. The majority (n=7) of adolescent blood donors were practising sexual abstinence. Social status of being blood donors, together with the knowledge that all donated blood is tested for HIV were protective against risky sexual behaviour. However, socio-economic and cultural factors were reported to override this protective effect. Half the number of adolescent participants reported acceptability of unprotected sex if they had sex with other blood donors, as they perceived a low risk of HIV infection in these individuals. Contextual factors; including gender and age imbalances, economic deprivation, partying, pressure for sex on female students from some male lecturers who promise them good grades, inaccessibility of condoms and lack of practical skills on condom use may put adolescent donors at risk of HIV. Socio-economic and cultural factors make it difficult for adolescent donors to make safe behaviour choices. This suggests that behavioural change models (ABC model), are unlikely to be effective in reducing HIV incidence in this group. Ensuring financial security, especially among female adolescents, acknowledging adolescents as sexually active beings and making them aware of the risk of other STIs which may be prevented by using condoms are likely to have an impact in ensuring a safe and consistent pool of adolescent blood donors in Zimbabwe
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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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