1,720,960 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
ONE DISEASE WITH MULTIPLE FACES
No full textOne disease with multiple symptoms and multiple presentations, this time reported in Khyber Pakhtunkhwa as epidemic, yes, I am talking about dengue fever.
Dengue fever is one of the mosquito-born infections1, transferred from one person to another by mosquito bite. The exact history is not known, but most of the cases were reported after Second World War. Nowadays, it is present throughout the world infecting up to 500 million people in more than 110 countries around the globe. It is reported that around 10 to 20 thousand people die annually due to dengue fever throughout the world. It is now considered as one of the most dangerous but equally neglected tropical disease.
In Pakistan, its first outbreak was reported in 2014 and after that it follow different courses. The first dangerous outbreak in Khyber Pakhtunkhwa and Peshawar was reported in 2017. But unluckily since then, its number is increasing. It is considered as one of the most reported disease by national media in Pakistan. Due to its strange name for the general public and some reported mortality, it is considered as a dreadful disease in the community. Severity of symptoms and fear of death compel every patient with fever to rush to the hospital and request for dengue test.
In 2019, again there was an outbreak throughout the country. But this time, presentation was very atypical in a set of patients that created a lot of problem to diagnose such patients clinically with suspected dengue fever and decide about their investigations. These atypical manifestations were really confusing2. In one set of patients who presented with classical symptoms of upper respiratory tract, characterized by cough, sore and congested throat, fever and body aches. Initial impression was made of common cold or viral upper respiratory tract infection. But later, the patient turned out to have low platelets and dengue fever. In another set of patients, the presentation was fever, body aches, severe epigastric pain, vomiting and diarrhoea. Initial impression was made of acute gastroenteritis, but later the patients were found to have dengue fever. We also observed loss of appetite, body aches, constipation, nausea and abdominal pain mimicking like enteric fever, but later most of these patients were found to have dengue fever. Luckily, severity in new cases was not observed and most of them were managed as outdoor patients. Admission was needed usually for those cases, which presented with recurrent dengue fever or in those patients who were suffering with other concomitant disease like chronic renal failure and chronic liver disease. Mortality in dengue fever was mostly reported with recurrent dengue fever and in patients having cardiac, renal, respiratory and hepatic problems3.
Dengue fever is now one of the leading health problems in our country. Still we must run a long way to fight against it. We must know about all the aspects of the disease, including its different clinical presentations and complications. If someone gets infected with one of its genotypes, it confers immunity against that genotype of dengue virus for life. But infection with another genotype of dengue virus in the form of recurrence can lead to severe infection and thus increase chances of mortality4. So, let’s keep a close watch on the different clinical presentation to diagnose recurrence timely and manage it appropriately in future. We need to educate and train our health professionals to fight this war against dengue fever in a more professional way in future.
We should also educate our community to adopt measure, which can prevent its spread in future. Our ignorance towards cleanliness as nation can put the whole society at greater risk in future. Future epidemic with different genotype will be dreadful. All these measures will work, if we concentrate more on prevention and follow the lesson of Islam about cleanliness and adopt it in true spirits. Commitment from the state agencies, policy makers, health professional and responsible community can decrease the future epidemics
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
The Theory of Minimal Surfaces in R^3 with a look at the Area Minimizing Property
No full textIn this thesis we look at minimal surfaces in R^3. We begin by looking at the theory of minimal surfaces. We look at the definition as well as examples of minimal surfaces. A minimal surface is defined as a surface that has zero mean curvature. We also look at the connection of minimal surfaces to harmonic functions, as well as the Weierstrass Enneper formulas. Then we look at the area minimizing property of minimal surfaces. A minimal surface does not always have minimal surface area. Thus we would like to find out when a minimal surface has minimal surface area. In order to look at this, we study the connection between minimal surfaces and the area functional. We also look at this problem by studying the connection between minimal surfaces and soap bubbles, which is given by Plateau's problem. This allows us to find some conditions that tell us when a minimal surface has minimal surface area. We demonstrate these concepts by looking at specific examples of minimal surfaces and finding out when they have minimal surface area. The examples we consider are the catenoid, Enneper's surface and higher order Enneper surfaces. We find out when these minimal surfaces have minimal surface area. We mention that this is a local property. By that we mean that minimal surfaces locally minimize their surface area
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