1,720,989 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
Estimating household vulnerability to poverty from cross section data: an empirical evidence from Ghana
Full text linkBackground
In many developing countries, policies aimed at improving welfare through poverty reduction tend to target the current poor to the neglect of the vulnerable. An understanding of household susceptibility to future poverty will be crucial for sustainable growth and development. The objective of the study is to assess ex-ante welfare through vulnerability to poverty estimates among households in Ghana and to examine the effect of various socioeconomic characteristics on vulnerability to poverty.
Method
The study uses cross section data from the fifth round of the Ghana Living Standards Survey (GLSS) with a nationally representative sample of 8,687 households from all administrative regions in Ghana. The study employs a three step Feasible Generalized Least Squares (FGLS) estimation procedure to estimate vulnerability to poverty and to model the effect of household socioeconomic status on expected future consumption and variations in future consumption.
Results
The results show that, about 56% of households in Ghana are vulnerable to poverty and this is significantly higher than observed poverty level of about 28%. While the Eastern region was found to have the highest average vulnerability of approximately 73%, the Upper West region had the least vulnerability with about 21% average vulnerability to poverty. Other regions with relatively high incidence of vulnerability to poverty include the Western region (70%) and the Volta region (69%). Vulnerability to poverty was estimated to be 61% among urban households and 25% among rural households. Moreover, household health status, household size and education attainments significantly influence vulnerability to poverty. Male headed households were found to be less vulnerable to future poverty.
Conclusion
The results suggest that poverty and vulnerability to poverty are independent concepts. This implies that policies directed towards poverty reduction need to take into account the vulnerability of current non-poor households. Also, various household characteristics should be considered in developing poverty reduction strategies
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
Amélioration des Données Socio-Économiques sur les Terres Rapport de Stratégie Ghana
Full text linkCette mission visait à évaluer la nature et la disponibilité des données socio économiques sur les terres au Ghana. Les objectifs spécifiques de l'étude étaient
les suivants : identifier les principales parties prenantes en matière de données
foncières et socio-économiques, évaluer la disponibilité des données et fournir des
suggestions pour améliorer les données foncières socio-économiques au Ghana.
L'approche adoptée pour préparer cette stratégie a été de mener d'abord une étude
documentaire pour identifier les types de données disponibles et leur accessibilité.
L'étude s'est également engagée auprès de diverses parties prenantes du secteur
foncier. Sept catégories clés de parties prenantes dans les données foncières socio économiques au Ghana ont été identifiées. En termes de disponibilité des données,
le service statistique du Ghana héberge en ligne la plupart des données socio économiques nationales du pays et offre un accès facile à la plupart de ces ensembles
de données. Cependant, certains ensembles de données n'ont pas été collectés par
le service statistique et ne sont donc pas disponibles publiquement. Les statistiques
sommaires présentées se concentrent principalement sur les terres agricoles et
montrent quelques variations intéressantes selon le sexe et la localisation du ménage.
Ce rapport stratégique recommande au gouvernement d'élargir les données socio économiques disponibles pour couvrir la propriété et l'utilisation des terres non
agricoles. En outre, il est nécessaire de créer un service d'assistance foncière où les
données socio-économiques foncières de toutes les parties prenantes peuvent être
gérées pour un accès facile. Cela sera utile pour les décisions politiques et les mises
en œuvre.
On the efficiency of public health expenditure in Sub-Saharan Africa: Does corruption and quality of public institutions matter?
Full text linkHealth expenditure in Sub-Saharan Africa (SSA) has improved over the years with several recent efforts to improve resource commitments to the health sector. Health outcomes in the region have, however, seen little improvements over the years. Several reasons, including the efficiency of health expenditure, have been given to justify this mismatch. Studies on health expenditure efficiency have mainly focused on developed regions with little attention to SSA. The objective of the study was, therefore, to examine The effects of corruption and public institution quality on efficiency. The efficiency of health expenditure was also compared across selected SSA countries. Data for the study was sourced from the World Bank's World Development Indicators for 45 countries covering the period 2005 to 2011. The two-stage Data Envelopment Analysis (DEA) was employed for the analysis. The first stage computes efficiency scores while the second stage examines the determinants of efficiency using the Tobit model. Per capita health expenditure was used as input while infant, under-five mortality and crude death rates were used as outputs. The results show that health expenditure efficiency was low with average scores of approximately 0.5. This suggests that there exist significant potential for SSA countries to improve population health outcomes given the level of expenditure. There was significant variation across countries with Cape Verde, Eritrea and Mauritius among the efficient countries while Equatorial Guinea, Sierra Leone and Swaziland were relatively inefficient. High corruption and poor public sector institutions reduced health expenditure efficiency. The findings emphasize the fact that, while increased health spending is necessary, it is also important to ensure efficiency in resource use across SSA countries. This can be achieved by effective monitoring and evaluation programmes that ensure reduced corruption and improved public institutions
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