1,721,004 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
Pazzolanic properties of hydrothermal silica gel extracted from sugarcane bagasse using eco-friendly approach
Full text linkIn the production of sustainable concrete, it is quite essential to develop highly reactive silica rich materials to substitute cement. Sugarcane bagasse ash as one of the agricultural based pozzolan gained less popularity due to its relatively low amorphous silica content after incineration process (< 50% silica). Therefore, an alternative approach was studied in this research to extract high proportion of amorphous silica from sugarcane bagasse that fulfils the minimum requirement of pozzolanic standard. The process was divided into three stages, which were obtaining optimum pre-treatment variables, obtaining optimum burning variables, and substantiation of pozzolanic feature. Pre-treatment variables were done to remove all impurities and deleterious material from the ash. It involved soaking of bagasse in different concentration of hydrochloric acid solution (0.1M, 0.5M and 1.OM) for different interval of time (1,2 and 3 hours) after which it was dried in a dedicated solar drying chamber for 48 hours. The optimum combination of hydrochloric acid concentration and soaking time was identified based on atomic absorption spectroscopy and x-ray fluorescence. Bagasse treated with optimum parameter would then undergo burning process with various temperatures (600,700 and 800°C) and durations (1, 2 and 3 hours). The produced ash was characterized by determining its oxides composition, particle size analysis, specific surface area, pore volume, mineralogical characteristics and micro-structure using xray fluorescence, x-ray diffraction and field emission scanning electron microscope, respectively. 0.1 M has emerged as the best concentrations with the extraction of silica could reach 83-89% with 1 hour soaking duration. 1 hour burning at 800°C concluded as the most feasible in producing amorphous state of ash. The ash obtained with optimum parameters was amorphous, chemically stable, and ultra-fine. The optimum ash was tested for its pozzolanic reactivity and indicated quite high pozzolanic reactivity index, which contributed to the significant improvement on the compressive strength properties of cementitious mortar of untreated, treated and silica gel at 2.5 and 5% replacement
Educational views of Ibnu Sina: Pemikiran pendidikan Ibnu Sina
Full text linkSome crucial questions have been raised in recent decades about proper Islamic education: its aim, underlying philosophy and assumptions, and value system. The most profound question is how to integrate the dualistic and contradictory systems of education to solve the problem of dualism or bifurcation faced by the Ummah in the present day. Some Muslim scholars suggest that the pre-requisites of being excellent in this world and the hereafter go back to the Quran and the Sunnah. Unfortunately, the views of Islamic scholars on Islamic education have been neglected due to the dominance of western elements and modern ideas. Therefore, there is a great need for us to examine the previous Muslim philosophers’ views and contributions. To discuss the Muslim philosopher’s view of education, Ibn Sina’s concepts and ideas concerning education derived from some philosophical and epistemological domains have been analyzed. Extensive documentary analysis was made for this purpose, while previous literature by Ibnu Sina was referred to. A ‘biographical’ work was done, which refers to a work that draws on whatever materials are available to Ibnu Sina to represent an account of his life and achievements. Narrative analysis is used to elicit results, and a comparative analysis of this philosopher with Western thinkers such as Aristotle and John Dewey also ensues. It is hoped that this will explain Ibn Sina’s genuineness in developing knowledge in accordance with the Quran and Sunnah and his contribution to the contemporary educational system
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
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
Perkembangan Pendidikan Islam di Nusantara: Malaysia dan Indonesia
Full text linkPenjajahan Barat telah banyak mempengaruhi pendidikan Islam di kebanyakan negara Islam di dunia. Modenisasi dan sekularisme adalah dua nilai barat yang membawa Perubahan kepada model asas, konsep, dan prinsip pendidikan Islam. Makalah ini bertujuan untuk meneroka perkembangan pendidikan Islam dalam menghadapi kedua-dua nilai tersebut, bermula dari kemunculan Islam sehingga masa kini di Nusantara, dengan berfokus hanya kepada Malaysia dan Indonesia. Kajian ini mendapati perkembangan pendidikan bagi umat Islam di Malaysia dan Indonesia telah menunjukkan Perubahan yang progesif serta penerapan nilai-nilai modenisasi dan sekularisme dalam sistem pendidikan sehingga terwujudnya dualisme. Walau bagaimanapun, kedua-dua aliran pendidikan (agama dan sekular) masih kekal terpisah di kebanyakan negara Islam sehingga kini. Justeru, perlunya kepada perancangan dan perlaksanaan kurikulum bersepadu yang bersifat Islamik yang sebenar. Usaha penyepaduan kurikulum dalam sistem pendidikan Islam bukan tugas yang mudah kerana memerlukan komitmen dan usahasama daripada pelbagai pihak
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