1,721,038 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
Recommended from our members
Exploring Models of Economic Inequality and the Impact on Mental and Physical Health Outcomes in Rural Eastern Province, Zambia
No full textStructural adjustment measures adopted during the early 1990s considerably altered the rural landscape throughout Zambia. Households responded and continue to respond in a variety of ways, although many do so under highly inequitable terms. Poverty rates, food insecurity, and income inequality all remain unacceptably high in Zambia, particularly in rural areas. Using a biocultural and livelihoods approach, this alternate "publication in scholarly journals" format dissertation examines some of the complexities that condition livelihoods and differentially shape biologies in rural Zambia today. Three main problems are explored: 1) the relationship between food insecurity and adult mental health; 2) piecework (casual labor) as a coping strategy and indicator of household vulnerability to food insecurity; and 3) the association between relative deprivation and adult physical health. Research for the dissertation took place in a rural area in Eastern Province, Zambia in 2009. The research employed a mixed methodology, collecting qualitative and household-level survey data during the rainy and dry seasons. Various statistical analyses were utilized in the three papers appended to the dissertation. The results were further explored using the findings from the qualitative data. In paper one, a positive relationship between food insecurity and poor mental health was found. Food insecurity during the dry season had a greater effect on mental health than in the rainy season. In paper two, the results demonstrate the importance of piecework labor as a coping strategy and the need to adopt a multi-period lens to robustly assess whether participation in piecework reflects a household's vulnerability to food insecurity. In the third paper, a negative association was established between relative deprivation and adult nutritional status. Together, the results from the dissertation provide clear evidence that both the material and relative circumstances of people play important roles in patterning variation in mental and physical health outcomes in rural Zambia
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
Impact of staple price changes on supply response of maize production : an analysis of household panel data in Zambia
No full textGlobal fluctuations in cereal prices since 2008 have created significant uncertainty and flux in international commodity markets. Projections are that prices over the next 10 years will generally be higher than they have been over the past half-century. Because of major heterogeneity in resources and farming conditions, farmers in agrarian societies like Zambia face a diverse range of challenges and opportunities in responding to these higher commodity prices. This thesis investigates the supply response of maize growing households in Zambia. A production function is created to identify the main determinants of ability to expand area under maize and maize yields among smallholder households. The study uses panel survey data on 5,400 farm households from the 2001, 2004 and 2008 Supplemental survey to the Post Harvest Survey of 1999/2000 agricultural season. Fixed effects analysis is used to model the response of households to different explanatory variables such as maize prices, household demographic characteristics, and asset holdings.I find that farm households' ability to respond to higher maize prices by expanding area under cultivation and yield are significantly affected by their resource endowmentThesis (M.S.)--Michigan State University, Agricultural, Food and Resource Economics, 2012Includes bibliographical references (pages 108-112
Cost-Effectiveness of Food and Cash Transfers to Patients under Anti-Retroviral Treatment in Zambia
Full text linkThis study determines the relative cost-effectiveness of food and cash transfers when administered to Human Immuno-deficiency Virus (HIV) / Acquired Immune-Deficiency Syndrome (AIDS) patients on Anti-Retroviral Therapy (ART) in Zambia. The results show that cash transfers are not only cheaper but also unambiguously more cost-effective with respect to nutrition and health outcomes such as body-mass index (BMI) and Cluster of Differentiation 4 (CD4) count. This seems to suggest that, whenever market conditions and institutional capacities (banks, personnel, etc.) permit, cash should be given a higher rating by governments and other programming stakeholders than physical food aid as an instrument for influencing health and nutrition outcomes among HIV patients that are on ART
Local Content Policies in the Mining Sector in Zambia: A Synthesis of Its Benefits
Full text linkThere has been lots of questions as to why there is continued marginalization of small and medium enterprises (SMEs) in the mines despite local content policies. A recent report regarding estimates of input goods and services to the mines in Zambia show an accumulation requirement of US$5 billion annually and the share of domestic firms in the mining market is less than 4 per cent, while that of indigenous firms is about 1 per cent. This raises lots of questions as to what extent local content help SMEs to supply to the mines. Local content policies are legal requirements to empower local SMEs so that a share of factors of production in form of labour, supplies of goods and technology required at various stages of the value chain is sourced from the domestic economy. A survey of 350 SMEs answered a questionnaire to determine how local content policies help them to supply to the mines. It was found out that the local content only helped SMEs to improve their skills and capacity and not to help them supply to the mines or employment of the local people. The study recommends that a mining commission of Zambia be formed with executive powers to enhance the inclusion of local SMEs to the mines. Further, a local content committee and economic empowerment must be institutionalized to improve the position of SMEs and enhance economic empowerment respectively Keywords: Local content, global value chain, small and medium enterprises DOI: 10.7176/EJBM/11-33-05 Publication date: November 30th 2019
CONSERVATION FARMING IN ZAMBIA
Full text linkDeclining soil fertility and recurrent drought pose serious challenges to farmers in Africas semi-arid regions, where half of all farmland suffers from erosion and nutrient depletion (Cleaver and Schreiber, 1997). In response, farmers and researchers across the continent have experimented with a broad array of soil and water conserving technologies (Reij et al., 1996). This paper describes the development and dissemination of one such technology from Zambia
Household welfare and natural resource management around national parks in Zambia
Full text linkGame management areas in Zambia aim to combine nature conservation with economic empowerment of rural households. By looking at households inside and outside game management areas, this study advances the knowledge of the impact of community based natural resource management on household welfare. The paper focuses on the economic welfare of households living inside game management areas. It tries to answer the question: Do the households in game management areas enjoy higher levels of welfare relative to the conditions they would have been in had the area not been designated as a game management area? Within the game management area, the paper tries to determine the factors that influence household participation in natural resource management, and whether the participating households get any extra benefits. Also of interest is whether such benefits of living in a game management area, and, once in such an area, those of participating accrue more to the poorer segments of the communities. The study finds that the gains from living in a game management area and from active participation in natural resource management are large but unevenly distributed. Only game management areas near Kasanka, Lavushi, Isangano, and South Luangwa national parks in the sample show significant benefits to general and participating households. And in those areas, the poor do not seem to gain even when they participate actively. More even distribution of gains from game management areas across households near different park systems and across the poor and the non-poor should be a continuing goal of national policy makers.Housing&Human Habitats,Access to Finance,Small Area Estimation Poverty Mapping,Poverty Lines,Community Development and Empowerment
- …
