1,721,045 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
Reformulação curricular actual das ESAs de Beja, Castelo Branco, Elvas e Santarém
No full textA aprovação da nova Lei de Bases do Sistema Educativo (Lei nº 115/97 de 19/09/1997 do DR nº 217 — 1ª série A), levou a que as Escolas Superiores Agrárias, propusessem ao Ministério da Educação a criação, nas mesmas, de Licenciaturas bi-etápicas inicialmente com a criação de um segundo ciclo de formação assente sobre os cursos de Bacharelato já existentes. Posteriormente, foram-se propondo reestruturações, visando melhorar a articulação inter-disciplinar e garantir a maior coerência dos cursos, havendo também casos de Licenciaturas novas, designadas correntemente por licenciaturas de raiz.
Das escolas em análise (ESABeja, ESACastelo Branco, ESAElvas e ESASantarém) far-se-á uma abordagem desta reformulação educativa, na perspectiva de avaliar a evolução das mesmas relativamente ao tipo de cursos minis¬trados, a importância do ensino da Horticultura (sentido lato) nos mesmos e o tipo de evolução que cada Escola está a encetar
Plantas aromáticas como novas culturas hortícolas
No full textPlantas aromáticas como novas culturas hortícolas
Intensive Programme 2007/08 : EURHORTICOLA : new approaches on horticultural training in the European Community - Development of Medicinal and Aromatic Plants [MAP].
No full textSince the end of the 20th century, the European ma¬rkets and particularly the one of the North of Europe have a growing demand of medicinal and aromatic plants (MAP). The consumers' interest for polifontional species has been a reality in growth. A same species or genera of this group of plants can possess a series of uses: to feed, perfume, ornamental, cosmetics and pharmaceutical.
The growing search of products of natural origin as al¬ternative to the use of synthesis products easy to obtain but with a semi craft labour, it has constituted a hard incentive for the development of larger produced volumes and ma¬rketed of aromatic and medicinal plants as well as a de¬mand in new ways vegetables of bioactive products. These last ones they are used so much in the domain of the health as in other sectors where are used that respect the ambient like phytopharmaceutical products.
There are literally hundreds of medicinal and aromatic plants used in European herbal industry. The French pharma¬copoeia, for example, lists 421 plants that it considers as va¬lued sources of herbal medicine. As a consequence, the safety and quality of herbal medicines have become increasingly im¬portant concerns for health authorities and public alike.
One in each five patients consume medicinal plants, 60-70% of the patients don't reveal to the doctor / pharmacist because: consider natural product as innocuous and have fear.
The figure 1 shows the increasing in the world market of products to the base of Plants.
The largest market is Europe, being responsible for 38% of the world market.
The European country with the largest consumption sli¬ce is Germany, being responsible for 50% of the European market, following for France, England and Italy.
The trade is above all driven through Germany, where they are most of the great companies importers.
In Europe more than 2000 species are used with com¬mercial ends; The species more cultivated are: lavender, pity-opium and fennel. The larger cultivations in CE: are in France, Hungary, Germany and Spain. In no CE countries the greater cultivations are in Bulgaria and Albania.
European German companies, dominate the global medicinal and aromatic plant sector. There are about 20 major wholesalers of MAPs and seven agents. There is an increasing interest in organic certified MAPs and about half of the importers and wholesalers also deal in organic plant material *although the quantities are small compa¬red to conventional products. Only very few importers and processors deal only in organic MAPs and spices.info:eu-repo/semantics/publishedVersio
Conservação e valorização de Lavandula luisieri (Rozeira) Rivas-Martínez da Beira Interior
Full text link1 – Contexto e objetivos
2 - Lavandula luisieri
Nomenclatura, classificação.
Caracterização fitossociológica, morfológica, genética e química.
Bioactividade e germinação
3 - Perspectivas futura
- …
