1,720,955 research outputs found
Effects of Fertilizer Level on Yield and Yield Components of Different Food Barley Varieties at Arsi Zone, Ethiopia
Get PDFA field experiment was conducted at Lemu-bilbilo wereda, Arsi Zone, Ethiopia, from June to December 2017/18 cropping season, with the aim of evaluating the optimal rate of fertilizers rate for maximal production of food barley varieties on two farmer’s site. Four levels fertilizer (RNP (100 kg / ha urea + 150 kg / ha DAP) (73N, 69 P2O5), 150%RNP, 200%RNP and RNPS (100 kg / ha) (19 N 38 P2O5 + 7S) and three food barley varieties (HB42, HB1307 and EH1493) were tested in Randomized complete Block Design replicate three times. The main effects of fertilizer rate on spike length, grain per spike and biomass yield showed significant (P< 0.05) variation. The use of 200%RNP resulted in highest (8.6 cm) spike length, (49.8) grain per spike and (7149.2 kg ha-1) biomass yield. The interaction effect of fertilizer level and food barley varieties showed significant (P<0.01) variation on grain yield , hectolitre weight and thousand kernel weight. The highest (3345.8 kg ha-1) grain yield was obtained from the combination of HB1307 food barley variety with 200%RNP fertilizer level, followed (2964.5 kg ha-1) grain yield was recorded fromHB1307 variety at fertilization of 150%RNP,while the lowest(1860 kg ha-1) grain yield was recorded from HB42 variety at a RNP fertilizer level. Likewise the highest (60.5 gm) thousand kernel weight and (71.6 kg hL-1) hectolitre weight was recorded from HB42 food barley variety fertilized with RNP and from variety EH1493 with 200%RNP fertilizer respectively. Therefor the most cost-effective variety and fertilizer level for farmers with low cost of production and higher benefits were identified to be the variety HB1307 at the fertilizer level of 150%RNP as first option for the study area and similar agro ecological conditions. Keywords: food barley, fertilizer rate, variety, grain yield DOI: 10.7176/JBAH/12-15-03 Publication date:August 31st 2022
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
Nutrient Use Efficiency and Grain Quality of Malt Barley (Hordeum vulgare L.) Varieties in Response to Nitrogen Fertilizer in Southeastern Ethiopia
Get PDFThe expansion of brewing industries in Ethiopia has been inducing a growing demand for the supply of malt with optimum kernel protein content. However, the supply has been constrained by the unavailability of sufficient volumes of acceptable quality of malting barley grain to meet the ever-increasing demand. In this regard, field experiments were conducted in the southeastern Ethiopian highlands to evaluate the combined effects of six fertilizer levels (0, 11.5, 23, 34.5, 46, and 57.5) N kg ha-1 and three malt barley varieties (Fanaka, Ibon and Holker ) on the yield, quality and nutrient use efficiency of malting barley. The experiment was laid out in a randomized complete block design with three replications. Application of 11.5, 23, 34.5, 46 and 57.5 N kg ha-1 increased the grain yields by 1010.3, 1065.9, 1288.1, 1421.3, and 1777.6 kg ha-1 and economic benefits by 31 %, 30.4 %, 32.9%, 33.16% and 33.38% respectively, for each increment of on N fertilizer, when compared to the control treatment. The production of malting barley with improved yield, optimum kernel protein concentrations and enhanced economic benefit was attained through 57.5 and 46 N kg ha-1 as first and second option respectively in the study area. Thus, to improve the likelihood of acceptance of malting barley by malting industries, growers are recommended to select low-protein containing varieties and decide application of N fertilization based on soil test results
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
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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
