1,720,956 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
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
En Regressionsanalys av Parametrarna som Påverkar Aktieprisets Utveckling Under Första Dagen Efter en Börsnotering.
No full textThis study focuses on initial public offerings (IPOs), which are the process of making a company's shares available for public trading on a stock market. Despite global uncertainties in recent years, there has been a high demand for company listings in the market. Many IPOs have experienced a positive trend in share prices on the first day of trading as a publicly traded company.The objective of this study is to develop a multiple linear regression model to analyze the impact of various parameters on the first day return of IPOs. The generated model will be evaluated to create a reduced model with an optimal subset of variables. The study will specifically focus on IPOs listed on some Nordic marketplaces during the period 2017-2022.The results of the study suggest that the created models are not effective in capturing the variance of first day returns. The deficiency of the created models is likely due to both the complexity of the stock market and the difficulties of quantifying and capturing some of the factors impacting the initial performance of IPOs. However, the reduced model performs slightly better and indicates that variables such as NGM SME, First North, PreSubscribed, and AmountNewlyIssued explain most of the variance in the response variable.Denna studie fokuserar på börsintroduktioner (IPO), processen i vilken ett företags aktier görs tillgänglig för allmän handel på börsen eller en annan marknadsplats. Trots omfattande globala osäkerheter under de senaste åren, så har efterfrågan på börsnoteringar varit hög. Många av dessa IPOs har upplevt en positiv aktietillväxt under första dagen som ett publikt handlat bolag.Målet med rapporten är att utveckla en multivariat linjär regressionsmodel med syfte att analysera påverkan olika variabler har på aktieprisets utveckling under första dagen som ett noterat bolag. Modellen kommer därefter utvärderas och en reducerad modell innefattande en optimal kombination av variabler kommer genereras. Rapporten kommer specifikt undersöka noteringar gjorda under perioden 2017-2022.\\Resultatet av studien visar på stora brister i modellernas prestationsförmåga. Troligen grundar sig deras oförmåga i både aktiemarknadens komplexitet samt svårigheter i att kvantifiera och fånga relevanta faktorer som påverkar de initiala aktieprisfluktuationerna efter en IPO. Den reducerade modellen presterar dock något bättre och indikerar att variabler som NGM SME, First North, PreSubscribed och AmountNewlyIssued förklarar det mesta av variansen i den beroende variabeln
Gröna obligationer och greenium : En empirisk studie av prissättningen på gröna obligationer i Sverige och Euroområdet
No full textThis thesis investigates the existence and determinants of greenium, which refers to the yield differential between green bonds and comparable conventional bonds, in the European and Swedish bond markets. Using a direct matching methodology and Z-spread comparisons, we construct matched bond pairs and apply both parametric and non-parametric methods to evaluate the significance of greenium. In addition, panel regression models are used to isolate the effect of the green label in different environments while controlling for both bond-specific and macroeconomic factors. The results show a statistically significant but modest greenium in the Eurozone bond market on average with variation over time. However, no significant greenium is found in the Swedish bond market. Our regression analysis indicates that external reviews and issuer credibility are key factors that influence the size of the greenium. The findings suggest that investor preferences and reputational considerations play an important role in the pricing of green bonds, although the effect is not consistent across both regions. Detta arbete undersöker förekomsten av, samt orsaker bakom, greenium, det vill säga skillnaden i avkastning mellan gröna obligationer och likvärdiga konventionella obligationer, i den europeiska och svenska obligationsmarknaden. Med hjälp av en direkt matchningsmetod och jämförelser av Z-spread görs parvisa jämförelser mellan obligationer. Vidare tillämpas panelregression för att isolera effekten av den gröna märkningen på obligationer i olika kontexter, med kontroll för såväl obligationsspecifika som makroekonomiska faktorer. Resultaten visar att det i genomsnitt finns en signifikant, men liten, greenium i euroområdet, där storleken varierar med tiden. I den svenska marknaden återfinns däremot ingen greenium. Regressionsanalysen pekar på att externa granskningar samt trovärdighetsattribut relaterade till antalet emitterade gröna obligationer är bidragande till storleken på greenium. Resultaten tyder på att investerares hållbarhetspreferenser och hänsyn till emittentens anseende spelar en betydande roll i prissättningen av gröna obligationer, även om effekten inte är likformig inom båda regionerna
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