1,721,202 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
Molecular Analysis of the MN1 Oncogene and the Leukemia-Associated Fusion Gene MN1-TEL
Get PDFThe word hematopoiesis comes from the ancient Greek; haima translates to 'blood' and poiesis means 'to make': hematopoiesis describes the formation and development of bloods cells. Different types of blood cells are recognized. Red blood cells, the erythrocytes, are important for transport of oxygen throughout the body, white blood cells, B and T-lymphocytes, are crucial for the immune response and granulocytes and monocytes are important for responses against infections. Platelets, which form clots to stop bleeding, are also formed by hematopoiesis.1
Hematopoiesis is an intriguing process that continuously supplies the organism of new blood cells for its complete lifespan. In humans, the first primitive blood cells are formed in the blood island of the yolk sac (2 to 8 weeks of development).2 This is followed by blood cell formation in the fetal liver and the spleen. At five months of development the bone marrow is the site of production of blood cells and it continues to do so throughout life.
The cells from the hematopoietic system are generated from the self-renewing hematopoietic stem cells (HSC) that reside mainly in the bone marrow.3,4,5 HSCs are divided in long-term (LT)-HSC and short-term (ST)-HSC (Figure 1). LT-HSC are slow-dividing cell populations that contain self-renewing cells that sustain long-term hematopoiesis, divide a-symmetrically, and form ST-HSC. These cells are faster-dividing cell populations with limited self-renewal potentials and are more committed, ready-to-differentiate and produce the progeny of the different lineages. ST-HSC differentiate into nonself-renewing multipotent progenitors (MPP). This cell type differentiates into two oligolineage progenitors, the common myeloid progenitor (CMP) or common lymphoid progenitor (CLP). T-cells, natural killer (NK)-cells and B-cells are formed from the CLPs. CMPs differentiate into either megakaryotic/erythoid progenitors (MEP) that produce erythrocytes and platelets or granulocyte/monocyte progenitors (GMP). Dendritic cells are produced either from CMPs or CLPs
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
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