1,720,954 research outputs found
Design of a pneumatic transport system for emptying alumina tanks
Full text linkPnevmatski transporterji so nepogrešljivi sistemi za transportiranje prahastih materialov v podjetjih. V diplomskem delu je predstavljena naloga, ki so mi jo dodelili v podjetju Silkem d. o. o. za načrtovanje novega sistema pnevmatskega transporterja za transportiranje glinice iz cistern v silose. Opisan je proces načrtovanja pnevmatskega transportnega sistema ter splošna uporaba pnevmatskih transporterjev. Izvedena sta preračuna tlačnega sistema, katerega namen je izračun potrebne pogonske moči kompresorja. Izveden je tudi preračun pnevmatskega transportnega žleba, katerega namen je določitev njegovo geometrijo ter izračun potrebnega pretoka zraka in minimalnega potrebnega površinskega tlaka. Na koncu preračuna je navedena tudi izbira pogona za pnevmatski transportni žleb.Pneumatic conveyors are indispensable systems for transporting powder materials in companies. The diploma thesis presents the assignment assigned to me by Silkem d.o.o. for the design of a new pneumatic conveyor system for the transport of alumina from tanks to silos. The process of planning a pneumatic conveyor system and the general use of pneumatic conveyors are described. Calculations of the pressure system have been performed, the purpose of which is to calculate the required driving power of the compressor. The calculation of the pneumatic transport gutter was also performed, the purpose of which is to determine its geometry and to calculate the required air flow and the minimum required surface pressure. At the end of the calculation, the choice of drive for the pneumatic transport gutter is also stated
Numerical analysis of the HideOUT product
No full textV magistrski nalogi je opisana numerična analiza izdelka HideOut, modularne zunanje enote, ki jo proizvaja podjetje Dukin d. o. o. Glavni cilj analize je bil določiti polja pomikov in napetosti v obstoječi konstrukciji ter nato izvesti optimizacijo tega izdelka. Geometrija je bila pripravljena v programskem paketu SolidWorks, numerična analiza pa izvedena v programskem paketu PrePoMax, po metodi končnih elementov. Rezultati analize so razkrili najbolj obremenjene dele konstrukcije, kar je služilo kot osnova za optimizacijo. V okviru optimizacije je bila izdelana nova različica konstrukcije, pri čemer je bila teža zmanjšana, ne da bi pri tem ogrozili varnost ali stabilnost. Poleg tega so bile napetosti v konstrukciji bolj enakomerno porazdeljene. Optimizacija tako izboljšuje funkcionalnost in ekonomičnost izdelka, saj ohranja strukturno integriteto, hkrati pa zmanjšuje stroške proizvodnje in porabo materiala.The master\u27s thesis presents a numerical analysis of the HideOut product, a modular outdoor unit manufactured by Dukin d.o.o. The main objective of the analysis was to determine the displacement and stress fields in the existing structure and subsequently perform an optimization of the HideOut product. The geometry was prepared using the SolidWorks software package, while the numerical analysis was conducted in the PrePoMax software package based on the finite element method. The results identified the most loaded points of the structure, which formed the basis for the product\u27s optimization. A new structure was designed with reduced weight, without compromising safety or stability. Additionally, the stress distribution within the structure was improved. This optimization enhances the product\u27s functionality and cost-efficiency by maintaining structural integrity while reducing production costs and material usage
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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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