1,720,954 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
Enhancing inventory replenishment process flow through efficient sales & demand forecasting
No full textBeing able to adapt to the growing market and customers needs is significant to achieve business growth. This can be attainable if the organization can supply the requirements of its customers in a timely and accurate manner. In line with this, having the appropriate inventory of goods is essential in order to speedily provide quality customer service. For organizations involved in manufacturing and distribution, inventory level of products must consistently be enough to support incoming demands from the market. This also supports the goal to increase revenue by eliminating loss sales opportunities through sufficient stock-on-hand and consistent inventory replenishment across the organizations warehouse and distribution points.
There are several inventory management strategies and frameworks which can be helpful to maintain a healthy inventory. According to an article by Wallin (2006), The most common inventory management methods are Inventory Speculation and Inventory Postponement. Inventory Speculation equips the organization to respond quickly to demand. On the other hand, Inventory Postponement allows the organization to minimize inventory obsolescence risks and decrease the opportunity cost of having inventory capital tied up in product inventories. In addition, another essential tool in Inventory Management is Turnover Analysis. This helps the organization to decide whether inventory level for a particular product is excessive, too low or just right. Also, Collaboration among all stakeholders is a critical factor in Inventory Management. The CPFR Framework (Collaborative Planning, Forecasting and Replenishment) is an essential tool to ensure consistency among stakeholders. This enhances supply chain integration by supporting joint practices within different teams in the organization
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Introducing Multifunctionality into Polypeptide Vesicles for Biomedical Applications
Get PDFThe delivery of naked drugs, DNA, RNA and proteins within living organisms is a challenging endeavor where renal clearance, liver accumulation, solubility issues, enzymatic and proteolytic degradation may reduce the effectiveness of the drug. Researchers are developing drug carriers such as liposomes, micelles, emulsions and vesicles to overcome these obstacles. Such carriers are used to encapsulate drugs and protect them from degradation, and more importantly to protect the patient from toxic side effects. Polypeptide vesicles are of interest because they are made up of long chains of amino acids and may be advantageous for in vivo applications since they can degrade to non-toxic metabolites. Natural and unnatural amino acids can be used as building blocks allowing a variety of functionality and tuning of physical properties. Polypeptides are also advantageous in that they can form secondary structures (i.e., alpha-helices, beta-sheets) stabilized by hydrogen bonding, which help to direct their self-assembly. Our group had developed polypeptide vesicles containing polyarginine hydrophilic segments of the general structure: poly(L-arginine)60-block-poly(L-leucine)20, R60L20. The R60L20 vesicles were able to encapsulate Texas Red labeled dextran and were taken up by T84, HeLa, and HULEC-5A cell lines, indicating that polyarginine segments are useful for intracellular delivery. While these polypeptide vesicles (R60L20) have shown promise for intracellular delivery there are issues that remain to be addressed, such as cytotoxicity and cargo release. In my research, I have focused on addressing these issues by optimizing the hydrophobic segment and introducing multifunctionality into polypeptide vesicles, creating improved drug delivery vehicle candidates. In order to optimize vesicle self-assembly and the ability to obtain diameters in the nanoscale range, the hydrophobic domain length and composition was varied. Fine-tuning the length of the poly(L-leucine) domain to 20 residues led to stable vesicular assemblies that had reduced cytotoxicity. To reduce the rigidity of the vesicle membrane a statistical copolypeptide was incorporated in the hydrophobic domain to disrupt the crystallinity of the poly(L-leucine)20. The incorporation of L-alanine and L-phenylalanine residues allowed vesicle diameters to be manipulated below 200 nanometers with a 1 to 1 ratio of L-leucine to L-phenylalanine resulting in narrow polydispersities. Replacing the cationically charged hydrophilic domains with neutral segments led to reduced cytotoxicity of block copolypeptide vesicles. It was found that incorporating neutrally charged segments, containing disordered chain conformations, provides the optimal conditions for obtaining minimally toxic vesicles with the ability be extruded to sizes below 200 nanometers in diameter. Glycosylated block copolypeptides not only provided a neutral non-toxic vesicle suspension, but also provide a method for incorporating biofunctionality, with the ability to bind to lectins. Recent advances in the purification of alpha-amino acid N-carboxyanhydrides (NCAs) led to the use of L-methionine NCA, which has not been polymerized incorporated into block copolypeptides before. The unique sulfur chemistry of methionine provided a quick alternative to introducing new functionalities into polypeptide vesicles. Oxidation of poly(L-methionine) segments provided polypeptide vesicles with the ability to release its cargo within an environment containing either reducing chemicals or reductase enzymes found in human, animal and plant cells
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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