1,720,980 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
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
The Negative Effects of Decreased Measles Vaccinations Coverage
Get PDFTato bakalářská práce se zabývá problematikou infekčního onemocnění spalniček. Největší důraz je kladen na snižující se proočkovanost dětské populace a s tím spojený nárůst nových případů nákazy. Cílem této práce je analýza dat týkajících se proočkovanosti dětí a počtu případů onemocnění v dětské populaci na území České republiky se zaměřením na nejnovější údaje z posledních let. V teoretické části je popsáno onemocnění spalniček z etiologického a klinického hlediska, včetně všech možných komplikací, které toto onemocnění může způsobit. Další část je věnována historickému původu spalniček a současné epidemiologické situaci, zejména v ČR. Následně jsou stručně zmíněny statistiky úmrtnosti ve světě a současné možnosti léčby lidí nakažených spalničkami. Nedílnou součástí této části práce je popis očkovacích schémat od počátků vakcinace až po současnost, a také popis epidemiologických opatření, zaváděných buď v rámci prevence, nebo z důvodu minimalizace následků v místech propuknutí nákazy. V praktické části jsou graficky zpracovaná data týkající se proočkovanosti dětí a výskytu nákazy v dětské populaci. Statistiky proočkovanosti jsou rozděleny na celkové výsledky, obsahující data pro celou ČR, a regionální výsledky, které jsou rozděleny podle jednotlivých krajů. Statistiky výskytu onemocnění jsou rozděleny podle věkových kategorií sledovaných subjektů.This bachelor´s thesis studies the contagious measles disease. The main emphasis is put on the increasing number of new cases associated with the decreasing childhood vaccination coverage. The aim of this work is to analyze data of childhood vaccination coverage and numbers of infant cases in the Czech Republic, focused on the latest data in recent years. In the theoretical part, etiological and clinical aspects of measles are described, including all the complications this disease may cause. The next part is dedicated to the historical origins of measles and the current epidemiological situation - especially in the Czech Republic. Afterwards, the world mortality statistics and existing treatment options for people infected with measles are briefly mentioned. An integral part of this work is the description of vaccination schemes from the beginning of immunization to the present day, and the description of epidemiological strategies introduced either to prevent or to minimize the impact of the disease outbreaks. Childhood vaccination coverage data and childhood measles occurrence data are graphically presented in the practical part. Vaccination coverage statistics are divided into general results - containing overall data for the whole Czech Republic, and regional results - containing data for each region. Measles occurrence statistics are grouped by the age of monitored subjects
Current Trends in the HIV Diagnosis
Get PDFBakalářská práce se zaměřuje na vyšetřování infekce virem HIV s důrazem na nejmodernější postupy. Teoretická část se zabývá původem HIV viru, jeho cestami přenosu, interakcí HIV viru s infikovanou osobou a jejím imunitním systémem a možnou terapií. Praktická část práce popisuje současný stav testování HIV viru v České republice. V kapitole metodika jsou systematicky uvedené metody přímé i nepřímé diagnostiky, které se využívají jak pro základní, tak i pro konfirmační testování v Národní referenční laboratoři pro HIV/AIDS. Jednotlivé metody, tedy EIA, western blot, imunoblot a PCR testování. Výsledkem bakalářské práce je souhrn moderních metod testování vzorků na přítomnost HIV viru a grafy vystihující epidemiologickou situaci v České republice a také porovnání České republiky s ostatními státy Evropy.The bachelor thesis focuses on the examination of the HIV infection concentrating on the latest procedures. The theoretical part deals with the HIV virus origin and the way of it is transmission, the interaction of the HIV virus with the immune system of the infected person and the possible therapy. The practical part describes the current state of the HIV virus testing in the Czech Republic. In the Methodology chapter there are systematically given direct and indirect diagnostics methods, which are used for both the basic and the confirmation testing at the National HIV / AIDS Reference Laboratory. Individual methods, namely EIA, western blot, immunoblot and PCR testing. The result of the bachelor thesis is a summary of modern methods of the HIV virus presence testing and graphs describing the epidemiological situation in the Czech Republic including the comparison of the Czech Republic with other European countries
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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