1,720,969 research outputs found
Manipulation of beneficial microorganisms in the coconut rhizosphere : a sustainable soil fertility management approach
No full textInherent low fertility status of coconut grown soils, and the prolonged conventional farming practices without giving attention to the biological fertility component of coconut plantations, have resulted in inactive, degraded soils with very poor soil fertility. Soil microorganisms are a diverse group, having the ability to maintain the continuous functioning of the agricultural ecosystem by influencing soil fertility sustainably. With this emphasis, this chapter focuses on reviewing the scientific knowledge gathered in the past on coconut rhizosphere and the beneficial microorganisms inhabiting this environment. Based on the review, the chapter elaborates, strategies on how to manipulate the beneficial microorganisms and their specific traits in the context of coconut planation management. The strategies identified are, stimulation of favourable environment for soil microorganisms In-situ via soil organic carbon management and external introduction of beneficial microorganisms to the coconut rhizosphere
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
Spineless fodder cactus under different land use and production systems in rainfed semi-arid tropics of India
No full textSpineless forage cactus can be a cost-effective solution for the livestock keepers of semi-arid tropics by providing a stable source of nutritive forage capable of maintaining healthy and productive herds/flocks especially during lean periods. Therefore, the feasibility of growing cactus as an alternate source of feed and fodder in different land use systems was explored for these areas. Spineless fodder cactus was planted under various land uses and production systems like boundary plantation in rainfed farming systems, silvopasture, hortipasture, intercropping with forages like tri-specific hybrid (TSH) and cowpea, waste lands and also on farmers’ fields. The growth and yield of spineless forage cactus was recorded at the one and half year-old stage. On average, cactus achieved 74.8 cm height with 13.4 cladodes plant‑1 and 7.95 kg plant‑1 fresh biomass in TSH based intercropping system. The fresh fodder yield from cactus, TSH and inter-cropping system as a whole was 79.5 t ha‑1, 106.34 t ha‑1 year‑1 and 185.84 t ha‑1, respectively. The survival, cladodes plant‑1 and green fodder yield of cactus in Leucaena based silvipastoral system ranged between 62 and 81%, 2-7 and 1.5-5.25 kg plant‑1 while the corresponding values for Emblica based hortipastoral system were 67-86%, 3-10 and 2.4-8 kg plant‑1. The boundary plantation of cactus in rainfed farming system recorded 84-96% survival, 4-14 cladodes plant‑1 and 4.8-16.8 kg plant‑1 green fodder yield. Similarly, the cactus planted on waste land recorded 73-92% survival, 3-12 cladodes plant‑1 and 2.7-10.8 kg plant‑1 fresh biomass. The cactus planted in boundary plantation system recorded higher growth and fresh biomass followed by grass inter-cropping and least under shade in silvipastoral and hortipastoral systems
Nutrient intake and utilization in sheep fed opuntia [Opuntia ficus-indica (L.) Mill.] in combination with conventional green and dry fodders
No full textThe nutritive value of opuntia [(Opuntia ficus-indica (L.) Mill.] in combination with conventional fodders was assessed on 32 adult sheep, divided into 4 equal groups. The experimental diets consisted of chopped (5-8 cm) green opuntia cladodes (150 g on dry matter basis per head daily) in combination with chopped green napier (Pennisetum purpureum) grass (T1), berseem (Trifolium alexandrinum) hay (T2), lathyrus (Lathyrus sativus) straw (T3) and gram (Cicer arietinum) straw (T4) ad libitum. All experimental animals were supplemented with 200 g concentrate mixture per head daily. Total DM intake ranged from 3.39 to 4.35 per cent of live weight and it was higher (P<0.01) in experimental groups where berseem hay and lathyrus straw were used as basal feed (T2 and T3). The total tract apparent digestibility of DM, OM and CP were lower (P<0.01) in sheep fed opuntia with gram straw (T4) diet compared to other diets (T1, T2 and T3). Similarly digestibility of fibre fractions (NDF, ADF and cellulose) was also lower (P<0.01) on T4 diet. Intake of digestible DM, OM and TDN were significantly lower in T4 diet, where opuntia was supplemented with gram straw as basal feed, however, it did not differ (P<0.01) with T1 diet. The DCP intake was lower (P<0.01) in T4 (3.12 g/ kgW0.75) when compared to the standard requirements of 5.00 g/kgW0.75 in sheep for maintenance. But intake of TDN was over and above (48.74 to 62.10 g/kgW0.75) the prescribed requirements of 36.00 g/kgW0.75 in sheep for maintenance when considered for all the groups. Animals of all the experimental groups were in positive nitrogen balance. However, N intake, balance, absorb and retention were lower (P<0.01) in T4 diet compared to other diets, but the N excretion through faeces and urine was similar in T1 and T4; and T2 and T3. No significant (P<0.01) changes in live weight were observed and animals maintained the live weight throughout the experimental period. It was evident from the results that opuntia was highly palatable and in combination with conventional fodder sources could maintain adult sheep during summer in semi-arid conditions
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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