1,721,074 research outputs found
Updated list of species and commodity grouping / Liste actualisée des espèces et de leurs groupes d'usage
No full textThe 8,681 species covered in this bilingual book constitute a checklist of plant resources in tropical Africa. The first part lists the species by scientific name, family and primary use (based on the commodity group to which the species has been assigned). The second part arranges the species according to commodity group, family and secondary uses. This edition replaces PROTA’s Basic list of species, published in 2002.
Avec le recensement de 8 681 espèces, cet ouvrage dresse un véritable inventaire des ressources végétales de l’Afrique tropicale. Alors que la première partie propose un ordonnancement des espèces par nom scientifique, nom de famille et usage primaire (en fonction du groupe d’usage auquel l’espèce a été affectée), la deuxième partie présente un classement par groupe d’usage, par famille et par usage secondaire. Cette édition remplace la Liste de base des espèces de PROTA publiée en 2002
Plantes africaines prometteuses
No full textPréparé à l’occasion du 10e anniversaire de PROTA, cet ouvrage rassemble 25 espèces végétales considérées comme prometteuses en termes de valorisation et de débouchés commerciaux. Le potentiel de trois de ces espèces (la roselle, le sorgho et le caya blanc) a été déterminé lors de projets pilotes réalisés en collaboration avec des organisations de terrain. Le livre témoigne de la nécessité de mener des études analogues sur d’autres espèces
Promising African plants
No full textPrepared in celebration of the 10th anniversary of PROTA, this book presents 25 promising plant species in terms of product development and market opportunities. The potential of three of these species – roselle, sorghum and spiderplant – has been studied in pilot projects in collaboration with grass roots organisations. The book promotes the need to conduct similar studies of the other 22 identified species
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Consumption of, and beliefs about fonio (digitaria exilis) in urban area in Mali
Get PDFThe study sought to determine beliefs and practices about neglected crops in West Africa, using fonio (Digitaria exilis) as a model to understand how obstacles impede the consumption of this cereal in Bamako, the capital city of Mali. This was a crosssectional study on food ethnography in three steps: a market survey on availability of fonio, a food consumption survey on utilisation of fonio, and on beliefs on and attributes of fonio. The study covered the pre-harvest and post-harvest periods and involved key informants, food vendors, and women of reproductive age in households. Fonio, as all cereals, is available year-long on markets in Bamako, and is abundant from September to May before most of the common cereals mature. More than two-thirds (68%) of the women reported having consumed fonio one to three times a month. Fonio was more consumed as snack (djouka) on working days (62%) than on weekend and special event days, suggesting that encouraging the development of ready-to-serve fonio-based products would help increase the consumption of fonio among women in urban area. The average individual portion size of fonio was 152g/day, and the contribution to daily energy intake was 16%. A large share of the women was convinced that eating fonio was good for them (95%) and their family members (94%). Also, most of them thought that fonio had good cooking, organoleptic and nutritional qualities and could contribute to diet’s variation (91% to 100%). Decision by the women to purchase or prepare fonio in the household could be favourably influenced by factors such as media, household members suffering from anaemia, neighbouring people buying fonio and shortage of other cereals; whereas shortage of fonio products (77%), high cost of fonio products (69%), difficult cooking process (51%), and lack of knowledge about processing and cooking fonio (43%) were likely to limit fonio consumption among the women. Also, in the present study, fonio was perceived to be for rich people by more than half (58%) of the women. Improving cooking process and knowledge of the women about fonio cooking, as well as creating a demand for the women with the household’s head and others through media, social and health care services would help increase fonio consumption in Bamako. Key words: beliefs, fonio, women, Mali, ethnograph
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
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