1,720,987 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
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
Impact of a classroom-based physical activity programme on school attendance
No full textCilj rada bio je istražiti utjecaj svakodnevnih tjelovježbenih aktivnosti u učionici, provedenih s ciljem ostvarivanja aktivne pauze tijekom nastave na broj izostalih nastavnih sati učenika razredne nastave (2. - 4. razred). Ukupno je u istraživanju sudjelovalo 293 učenika iz dvije osnovne škole u dobi 7 - 10 godina. Iz eksperimentalne škole sudjelovali su svi razredni odjeli 2. - 4. razreda (186 učenika), dok su u kontrolnoj školi slučajnim odabirom izabrana od svih razrednih odjela dva razreda (107 učenika). U periodu intervencije učitelji su tijekom redovite nastave Hrvatskog jezika, Engleskog jezika, Prirode i društva te Matematike zaustavili nastavni proces i proveli petominutnu tjelovježbenu aktivnu pauzu uz pomoć multimedijalnih sadržaja. Eksperiment se provodio u drugom obrazovnom razdoblju (veljača – svibanj). Podaci su prikupljeni uvidom u dnevnik učenika, bez uzimanja osobnih podataka i uz dopuštenje ravnatelja. Koristile su se sljedeće varijable: (I) ukupan broj izostanaka tijekom prvog obrazovnog razdoblja, (II) ukupan broj izostanaka tijekom drugog obrazovnog razdoblja, (III) ukupan broj izostanaka tijekom cijele nastavne godine. Univarijantna analiza varijance (ANOVA) korištena je za utvrđivanje razlika u broju izostanaka s nastave između I. i II. obrazovnog razdoblja za kontrolnu i eksperimentalnu skupinu. Analiza kovarijance (ANCOVA) korištena je za utvrđivanje razlika između ukupnog broja izostanaka tijekom II. obrazovnog razdoblja između eksperimentalne i kontrolne skupine s ukupnim brojem izostanaka tijekom prvog obrazovnog razdoblja kao kovarijatom. Učenici iz obje skupine značajno su više izostali s nastave u drugom polugodištu (ES 27,12 vs. KS 28,16), međutim učenici eksperimentalne skupine ostvarili su manje povećanje broja izostanaka (ES 6,78 vs. KS 11,31). Nije utvrđena značajna razlika između eksperimentalne i kontrolne skupine u broju izostanaka tijekom II. obrazovnog razdoblja (p=0,333). Bez obzira što razlika u izostancima tijekom II. obrazovnog razdoblja nije statistički značajna, učenici eksperimentalne skupine su imali gotovo dvostruko manje povećanje broja izostanaka od kontronlne skupine u odnosu na I. obrazovno razdoblje.The aim of the paper was to investigate the impact of daily physical exercise activities in classroom, conducted in order to perform active breaks during classes, on the quantity of absent classes of classroom pupils (2nd to 4th grade). The total of 293 pupils from two primary schools aged 7 - 10 participated in the study. From the experimental school all the pupils from 2nd to 4th grade (186 pupils) took part in the study whereas in the control school two classes from each grade were randomly selected (107 pupils). During the period of intervention, while teaching classes of Croatian, English, Science and Math, teachers would stop the regular teaching process and carry out a five-minute active break with the help of multimedia content. The experiment was conducted in the second educational period (February - May). The data were collected by inspecting the student's grade book without taking their personal data and with the permission of the principal. The following variables were used: (I) the total number of absences during the first education period, (II) the total number of absences during the second educational period, (III) the total number of absences throughout the school year. Univariate Analysis of Variance (ANOVA) was used to determine differences in the number of absences between educational periods I and II for both the control and experimental group. The covariant analysis (ANCOVA) was used to determine the difference between the total number of absences during the II educational period between the experimental and control group with the total number of absences during the first educational period as a covariate. Pupils from both groups were significantly more absent from classes in the second educational period (ES 27,12 vs. KS 28,16), but the experimental group pupils had less increase in absence (ES 6,78 vs. KS 11,31). There was no significant difference between the experimental and control group in the number of absences during the II educational period (p=0,333). Even though the difference in the absences during the II educational period is not statistically significant, the pupils of the experimental group had double the increase of the number of absences than the contorol group in relation to the I educational period
Differences in the prevalence of risk factors for non-communicable chronic diseases in urban adolescents with normal and high blood pressure
No full textGlavna svrha ovog rada bila je je istražiti frekvencije čimbenika rizika obolijevanja od kroničnih nezaraznih bolesti kod adolescenata šireg urbanog područja koji imaju normalan i povišen krvni tlak. U provedbi istraživanja participiralo je ukupno 845 djevojaka i dječaka upisanih u prvi razred srednje škole u gradu Zagrebu. Podijeljeni po spolu, uzorak je sačinjavalo 416 djevojaka i 429 dječaka, koji se nasumično odabrani za sudjelovanje u istraživanju prema protokolu znanstvenog projekta CRO-PALS. Antropološkim mjerenjem prikupljeni su podatci o tjelesnoj masi, tjelesnoj visini i opsegu struka. Podaci o tjelesnoj aktivnosti, provedenom vremenu pred ekranom, učestalosti pušenja te socioekonomskom statusu sudionika dobiveni su putem upitnika SHAPES. Vrijednosti krvnog tlaka izmjerene su prema protokolu auskultatorne metode, koristeći živin sfigmomanometar i manžetu. Dobiveni rezultati istraživanja ukazuju da od cjelokupnog broja ispitanih adolescenata, 21.6% djevojaka i 27.0% dječaka ima povišen krvni tlak. Kod promatranih djevojaka i dječaka uočeni su viši postotci prekomjerne tjelesne mase, pretilosti te abdominalne pretilosti kod onih adolescenata koji imaju povišen krvni tlak. Kod ostalih čimbenika rizika; tjelesna neaktivnost, konzumacija duhana, prekomjerno provođenje vremena pred ekranom, nije utvrđena statistička zavisnost o kategoriji krvnog tlaka. Adolescenti koji imaju povišene vrijednosti krvnog tlaka trebali bi provoditi adekvatnu tjelesnu aktivnosti te uvesti kvalitetan način prehrane kako bi se smanjio rizik obolijevanja od kroničnih nezaraznih bolesti i povišenog krvnog tlaka. Nakon provedenog istraživanja opravdano je naslutiti da bi se udio urbanih adolescenata s visokim krvnim tlakom mogao regulirati posredstvom smanjenja udjela pojedinaca prekomjerne tjelesne mase i abdominalne pretilosti. Stoga, da bi se smanjio rizik obolijevanja od povišenog krvnog tlaka i pojave kroničnih nezaraznih bolesti, politike jedinica gradskih vlasti dijelom trebaju biti usmjerene promoviranju zdravog načina života i smanjenja prekomjerne tjelesne mase kod mlađih populacija.The main purpose of this research was to determine the differences in incidence of risk factors for chronic non-communicable diseases in adolescents of a wider urban area who have normal and high blood pressure. 845 first grade high school students from the area of the city of Zagreb participated in the research. Divided by gender, the sample consisted of 416 girls and 429 boys, who were randomly selected to participate in the research according to the protocol of the CRO-PALS study. Anthropological measurements collected dana on body weight, body height and waist circumference. Dana on physical activity, time spent in front of the screen, smoking frequency and socioeconomic status were obtained by the SHAPES questionnaire. Blood pressure values were measured according to the protocol of the auscultatory method, using a mercury sphygmomanometer and cuff. The obtained research results showed that out of the total number of examined adolescents, 21.6% of girls and 27.0% of boys have high blood pressure values. Higher percentages of overweight, obesity and abdominal obesity were observed in the observed girls and boy sin those adolescents who have high blood pressure. For other risk factors; physical inactivity, tobacco consumption, excessive spending time in front of the screen did not reveal a statistically significant dependence on blood pressure category. Adolescents who have high blood pressure should perform adequate psysical activity and introduce a quality diet to reduce the risk of developing chronic non-communicable diseases and high blood pressure. After conducting research, it is reasonable to suspect that the proportion of urban adolescents with high blood pressure could be regulated by reducing the proportion of overweight individuals and abdominal obesity. Therefore, in order to reduce the risk of developing high blood pressure and chronic non-communicable diseases, policies of city government units should be partly aimed at promoting a healthy lifestyle and reducing overweight in younger populations
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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