1,721,098 research outputs found
Cultivars and plant improvement
No full textThis chapter summarizes research on cultivar development, cultivar identification, genetic analysis and genetic improvement in litchi (Litchi chinensis) and longan, and describes litchi cultivars in China, Taiwan, Vietnam, Thailand, India, Bangladesh, Nepal, Philippines, Indonesia, southern Africa, Israel, Australia and the USA, and longan cultivars in China, Taiwan, Vietnam, Thailand, Australia and the USA
Litchi and longan: botany, production and uses
No full textLitchi (lychee) and the related fruit longan are grown extensively in China and South-East Asia, as well as in Australia, Florida (USA), Southern Europe and Southern Africa. This book represents the only comprehensive, balanced and internationally focused publication on these fruit. It covers all aspects of production, from taxonomy and breeding, to propagation, flowering and fruit set, to diseases, pests and postharvest storage and processing. It also contains information on photosynthesis, productivity, plant-water relations and nutrition
Abstract
No full textThis chapter on photosynthesis and productivity in litchi (Litchi chinensis) and longan covers the following: relationship between photosynthesis and plant development; effects of the environment on photosynthesis; assimilate production and distribution; relationship between fruit growth and leaf expansion; relationship between yield and assimilate supply; relationship between fruit size and yield; relationship between yield and tree size; effects of light and temperature on growth and productivity; effects of planting density and pruning on productivity; and practical aspects of pruning. Tabulated data on the productivity of litchi and longan in China and Thailand, and on the effects of leaf position and stage of development on leaf fresh weight and area, chlorophyll content, net carbon dioxide assimilation, and stomatal conductance in litchi (cv. Bengal) in Queensland, Australia, are presented
Abstract
No full textThis chapter on longan and litchi (Litchi chinensis) covers the following: effects of soil type, soil pH, salinity and mycorrhizas on fertilizer requirement; factors affecting leaf composition; leaf and soil analyses, and orchard surveys for fertilizer requirement determination; N, P, K, Ca, Mg, Zn, Fe, Cu, B and Mn nutrition (concentration and uptake, effects on productivity, and deficiency symptoms); fertilizer programme for young orchards in Australia; and fertigation
Abstract
No full textThis chapter on litchi (Litchi chinensis) and longans covers the following: soil and plant water relations; irrigation requirements; tree water use; irrigation in China, Vietnam and India; soil water uptake; relationship between gas exchange and tree water status; models of leaf gas exchange; relationship between growth and weather; effects of drought on the growth of young trees, flowering in potted plants and orchard trees, and fruit growth and quality; irrigation management; irrigation systems; and monitoring of tree water use
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
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