1,720,975 research outputs found
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
Karakteristik Mutu Minyak Pala Berdasarkan Peralatan Distilasi Drum Bekas dan Distilasi Stainless (Studi Kasus di Kabupaten Aceh Selatan)
Get PDFQuality Characteristics of Nutmeg Oil Between Used Barrels Distillation and Stainless Distillation (A Case Study in Aceh Selatan Regency)
ABSTRACT. The Province of Aceh is the center of nutmeg oil production in Indonesia, which is about 70%-75% of the nutmeg oil production in Indonesia, is produced in the districts of South Aceh and Southwest Aceh. The rest is coming from the provinces of West Sumatra and West Java. Meanwhile, the nutmeg harvested in Maluku, North Maluku, North Sulawesi, and West Papua is not processed for its essential oil, but merely exported as spices. It is estimated that in 2017 the production of nutmeg oil will reach about 350-400 tones. The government has put a standard for nutmeg oil based on SNI 06-2388-2006. Therefore, taking this standard as consideration, a study on the characteristics of nutmeg oil quality in South Aceh was carried with 14 distillers as the sample. The tested nutmeg oil was taken from the distillers, both stainless distillation drum and used drum. The characteristics of nutmeg oil coming out of the used drum is from colorless to pale yellowish one, has nutmeg scent, specific gravity: 0,884 - 0,960, rafractive index: 1,481-1,500, optical rotation: (+)6,20o - (+)19,30o and rest of evaporation is between 5,70% - 28,15%. On the other hand, the characteristic of nutmeg oil taking from stainless distiller is colorless, has nutmeg scent, specific gravity: 0,861 - 0,892 refractive index: 1,472 - 1,484, optical rotation: (+)10,83o- (+)18,00o, and rest of evaporation is 0,50% - 4,80%. Most of nutmeg oil processed by used drum did not meet the SNI standard, whereas few of nutmeg oil distilled in stainless and semi stainless drum has met the SNI standard of nutmeg oil.Correlation of specific gravity and refraction index of nutmeg oil for stainless distillation is refraction index (Y) = 0,3151X + 1,2014, where R2 = 0,8403; whereas for used barrels distillation is refraction index (Y) = 0,28X + 1,2334, where R2 = 0,9637.Correlation of Optical Rotation for stainless distillation is Optical Rotation (Y) = -223,02X + 209,81, where R2 = 0,9645;conversely, forused barrels distillation Optical Rotation (Y) = -155,01X + 156,2, where R2 = 0,9348.Correlation of refraction index with Optical Rotation for nutmeg oil distilled with stainless distillation is Optical Rotation (Y) = -610,36X + 915,96, where R2 = 0,8536; contrarily for distillation with used barrels Optical Rotation (Y) = -545,71X + 827,26, where R2 = 0,9427
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
Analisis Potensi Sumberdaya Air Daerah Aliran Sungai Singkil Menggunakan Model Tangki
Get PDFAbstrak. Kebutuhan air terus meningkat seiring pertumbuhan penduduk, sedangkan air yang tersedia tidak selalu sejalan antara kebutuhannya menurut volume, tempat, waktu dan kualitasnya. Model-model hidrologi berdasarkan Tank Model telah dikembangkan dalam penelitian di Indonesia dan di dunia untuk memprediksi potensi sumberdaya air dalam suatu DAS. Optimasi parameter Tank Model dapat menggunakan Artificial Neural Network (ANN) yang mempunyai kemampuan untuk belajar dari data dan tidak membutuhkan waktu yang lama untuk mencapai model optimal. Tujuan analisis ini untuk menentukan seberapa besar potensi sumberdaya air di DAS Singkil berdasarkan optimasi parameter Tank Model. Hasil optimasi keseimbangan air parameter Tank Model DAS Singkil meliputi: karakteristik hidrologi DAS Singkil meliputi debit minimum 3,60 mm/hari, debit maksimum 17,80 mm/hari, dan rasio debit maksimum/minimum 4,94. Indikator kesalahan Tank Model DAS Singkil meliputi: R (Coefficient of Correlation) sebesar 0,6471, MAE (Mean Absolute Error) dan RMSE (Root Square Mean Error) masing-masing 2,18 dan 2,73. Total inflow 3.189,48 mm/tahun dan total outflow 3.155,64 mm/tahun, yang terdiri dari: surface flow 11,75 mm/tahun, subsurface flow 669,84 mm/tahun, intermediate flow 62,05 mm/tahun, subbase flow 0,74 mm/tahun, dan base flow 2.411,26 mm/tahun. Berdasarkan total baseflow volume ketersediaan air total yang mengalir di Sungai Singkil mencapai 12.164 x 106 m3/tahun. Potensi sumberdaya air DAS Singkil untuk keperluan pertanian mencapai 3.438,4 x 106 m3/tahun
Analysis of Potential Water Resources at Singkil Watershed using Tank Model
Abstract. Water demand continues to increase as the population growth, while the availability of water is not always consistent with the needs in terms of volume, place, time and its quality. Tank based hydrological models have been developed in many researches in Indonesia and in the world to predict the potential of water resources in a watershed. The optimalization of tank model parameter could be performed by using Artificial Neural Network (ANN), which has the capability to review the data and does not need much time to reach its optimized model. The purpose of this analysis is to determine the extent of a water resource potential in the Singkil Watershed based on the optimalization of Tank model parameter. Results of the optimalization of water balance of tank model parameter in Singkil Watershed include: hydrology characteristics of Singkil Watershed consisting of minimum debit of 3.60 mm/day, maximum debit 17.80 mm/day, and ratio of maximum/minimum debit is 4.94. Error indicators of Tank model in Singkil Watershed include Coefficient of Correlation (R), which is 0.6471, Mean Absolute Error (MAE) and Root Square Mean Error (RMSE), which are 2.18 and 2.73, respectively. Several parameters obtained include total inflow (3,189.48 mm/year) and total outflow (3,155.64 mm/year) consisting of surface flow 11.75 mm/year, subsurface flow (669.84 mm/year), intermediate flow (62.05 mm/year), sub-base flow (0.74 mm/year), and base flow (2,411.26 mm/year). Based on the total base flow, the total volume of water availability flowing in Singkil River reaches 12,164 x 106 m3/year. The potential of water resources in Singkil Watershed for agriculture is 3,438.4 x 106 m3/yea
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
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