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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
Changes in nutritional status in patients with cystic fibrosis in the era of CFTR modulators
Get PDFCystická fibróza je vrozené onemocnění, které vede k postižení zejména dýchacího systému, ale také gastrointestinálního traktu. Nutriční stav je významným faktorem celkového zdravotního stavu a prevence malnutrice představuje klíčovou součást terapie. Nová modulátorová léčba přispívá k výraznému zlepšení zdravotního stavu, ale také kvality a délky života. Cílem bakalářské práce bylo zhodnotit vývoj nutričního stavu po zahájení modulátorové léčby. Během práce bylo ověřeno, zda dochází ke zvýšení BMI, zda je efekt léčby ovlivněn výchozím nutričním stavem a zda se zvýšilo procento pacientů s cílovým a lepším nutričním stavem. Výzkumný soubor tvořilo 86 pacientů z Centra cystické fibrózy ve Fakultní nemocnici v Motole. Na základě retrospektivního sběru antropometrických údajů byl hodnocen vývoj BMI. Data pocházela ze 4 měření: před léčbou a poté po 1, 3 a 6 měsíců po zahájení léčby. Zhodnocení vývoje BMI bylo provedeno pomocí Friedmanova testu a porovnání mediánových hodnot. Pro ověření vlivu výchozího nutričního stavu na efekt léčby byli pacienti rozděleni do 4 skupin. Pomocí jednofaktorové analýzy rozptylu nebo Kruskall-Wallisova testu bylo ověřeno, zda existuje statisticky významný rozdíl mezi průměrným zlepšením BMI mezi skupinami. V poslední části bylo vypočítáno zastoupení jednotlivých skupin...Cystic fibrosis is an inherited disease that primarily affects the respiratory system but also the gastrointestinal tract. Nutritional status is a significant factor in overall health and prevention of malnutrition is a key component of therapy. New modulator therapy contributes to major improvement in health status as well as quality and length of life. The aim of the bachelor thesis was to evaluate the development of nutritional status after initiating modulator therapy. The study assessed whether there was an increase in BMI, whether the treatment response was affected by the initial nutritional status, and whether the percentage of patients with target and better nutritional status increased. The research sample consisted of 86 patients from the Cystic Fibrosis Centre at the Motol University Hospital. The development of BMI was evaluated based on retrospective collection of anthropometric data. Data from 4 measurements were used: before treatment and then at 1, 3 and 6 months after starting treatment. Friedman test and comparison of median values were conducted to evaluate BMI development. Patients were divided into 4 groups to verify whether the initial nutritional status affects the treatment response. One- way ANOVA or the Kruskal-Wallis test were used to assess statistically significant...3rd Department of Medicine - Department of Endocrinology and Metabolism First Faculty of Medicine Charles University and General University Hospital in PragueIII. interní klinika - klinika endokrinologie a metabolismu 1. LF UK a VFN1. lékařská fakultaFirst Faculty of Medicin
Changes in nutritional status in patients with cystic fibrosis in the era of CFTR modulators
No full textCystic fibrosis is an inherited disease that primarily affects the respiratory system but also the gastrointestinal tract. Nutritional status is a significant factor in overall health and prevention of malnutrition is a key component of therapy. New modulator therapy contributes to major improvement in health status as well as quality and length of life. The aim of the bachelor thesis was to evaluate the development of nutritional status after initiating modulator therapy. The study assessed whether there was an increase in BMI, whether the treatment response was affected by the initial nutritional status, and whether the percentage of patients with target and better nutritional status increased. The research sample consisted of 86 patients from the Cystic Fibrosis Centre at the Motol University Hospital. The development of BMI was evaluated based on retrospective collection of anthropometric data. Data from 4 measurements were used: before treatment and then at 1, 3 and 6 months after starting treatment. Friedman test and comparison of median values were conducted to evaluate BMI development. Patients were divided into 4 groups to verify whether the initial nutritional status affects the treatment response. One- way ANOVA or the Kruskal-Wallis test were used to assess statistically significant..
Observation of postural and respiratory functions in adult patients with cystc fibrosis
No full textThesis objective: This thesis focuses on postural and respiratory functions in adult patients with cystic fibrosis. Furthermore, it studies observations of common features in body posture. Finally, this thesis tries to evaluate life quality of patients with cystic fibrosis despite the fact of small experimental sample group used. Methods: between the years 2013 and 2014, 10 adult patients with cystic fibrosis diagnosis who were hospitalized at the department of tuberculosis and respiratory diseases at Motol hospital were examined. All examined patients belonged to the age category 18 to 30 years old. Methods used in examining the patients included spirometry, spine dynamic test, posture assesment software and at the end of all examinations a standardized questionnaire was given to all patients to evaluate the life quality of patients with CF (questionnaire of cystic fibrosis). Results: a common manifestation was the barrel-shaped thorax that increases its size in the anteroposterior direction, which causes thoracic kyphosis, shoulder protraction, stiffness of the ribcage and hyperlordosis of the lumbar spine. Conclusion: Patients with cystic fibrosis are to be found in all ranges of pulmonary functions. The most common complaint is the cough that distinctly affects their life quality (sleep..
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
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