1,721,718 research outputs found
Attestation of welding procedure by HRN EN 15614 standard
No full textU završnom radu opisane su specifikacije i kvalifikacije postupaka zavarivanja za metalne materijale. Ispitivanje postupka zavarivanja: elektrolučno i plinsko zavarivanje čelika i elektrolučno zavarivanje nikla i legura nikla (HRN EN ISO 15614-1:2017)
ISO ( Internacionalna organizacija za Standardizaciju) je međunarodno tijelo za donošenje norma koje je sastavljeno od predstavnika raznih nacionalnih normizacijskih tijela. Predmetak HRN EN označuje norme koje su preuzete iz normizacijskog sustava CEN/CENELEC-a (Europski Odbor za Standardizaciju).
Rad se kronološki sastoji od opisa svrhe atestiranja postupka zavarivanja , opisa procedure atestiranja postupaka zavarivanja, praktičnog dijela atestiranja postupka zavarivanja elektrolučnim taljenjem, te zaključka.In this paper are discribed Specification and qualification of welding procedures for metallic materials. Welding procedure test: arc and gas welding of steels and arc welding of nickel and nickel alloys (HRN EN ISO 15614-1:2017)
ISO (The International Organization for Standardization) is an international standard-setting body composed of representatives from various national standards organizations. Prefix HRN EN indicates standards that are taken from CEN/CENELEC (European Comittee for Standardization) standardization system.
The paper consists of the description of the purpose of attesting the welding procedure, the description of the procedure for attesting the welding procedures, the practical part of the welding attestation procedure by arc melting, and the conclusion
Certification and qualification of welded joint according to HRN EN ISO 15614-1 standard
No full textTema ovog diplomskog rada je ―Certificiranje i kvalifikacija zavarenog spoja prema normi HRN EN ISO 15614-1:2017‖. Rad se sastoji od teorijskog i eksperimentalnog dijela.
Tehnologija zavarivanja spada u najzastupljeniju tehnologiju spajanja materijala. U teorijskom dijelu opisan je pojam zavarivanja, a veća pozornost pridana je MIG/MAG postupku zavarivanja. Nadalje, naveden je pregled najvažnijih normi u zavarivanju i objašnjen standard HRN EN ISO 15614-1:2017 – Specifikacija i kvalifikacija postupka zavarivanja za metalne materijale – Ispitivanje postupka zavarivanja – 1. dio Elektrolučno i plinsko zavarivanje čelika i elektrolučno zavarivanje nikla i legura nikla .
Nakon objašnjenja standarda, opisana su svojstva čelika S355J2+N i X5CrNi18-10 na kojima se u eksperimentalnom dijelu rada provodi postupak zavarivanja i ispitivanja.The topic of this work is: ―The certification and qualification of the welded joint according to the standard HRN EN ISO 15614-1:2017‖. The work consists of a theoretical and an experimental part. Welding technology is one of the most common technologies for joining materials. In the theoretical part, the concept of welding is described, and more attention is paid to the MIG/MAG procedure. Furthermore, an overview of the most important standards in welding is given and the HRN EN ISO 15614-1:2017 - Specification and qualification of welding procedures for metallic materials – Welding procedure test – Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys standard is explained. After explaining the standards, the properties of steel S355J2+N and X5CrNi18-10 are described, on which the welding and testing procedure is carried out in the experimental part of the work
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
QUALIFICATION OF THE TITANIUM WELDING PROCEDURE IN ACCORDANCE WITH INTERNATIONAL STANDARDS EN ISO 15614-5 AND NORSOK M-601
No full textOvaj završni rad obrađuje tehnološke i normativne aspekte zavarivanja titana, s naglaskom na primjenu međunarodne norme EN ISO 15614-5 i industrijskog standarda NORSOK M-601. Cilj ovog završnog rada je analizirati i usporediti zahtjeve za zavarivanje titana prema međunarodnoj normi EN ISO 15614-5 i industrijskom standardu NORSOK M-601, s naglaskom na kvalifikaciju postupaka zavarivanja, kontrolu kvalitete zavarenih spojeva te primjena tih normi u industrijskoj praksi. Pri zavarivanju cijevnog spoja na materijalu titan korištena je metoda zavarivanja elektrolučnog zavarivanja netaljivom elektrodom u zaštiti inertnog plina. Po završetku nedestruktivnog ispitivanja i mehaničkog ispitivanja utvrđeno je da su parametri u proceduri za zavarivanje adekvatni te na osnovu ispitivanja moguće je izvršiti izradu kvalifikacije postupka.This thesis addresses the technological and normative aspects of titanium welding, with a focus on the application of the international standard EN ISO 15614-5 and the industry standard NORSOK M-601. The aim of this thesis is to analyze and compare the requirements for titanium welding according to the international standard EN ISO 15614-5 and the industry standard NORSOK M601, with an emphasis on welding procedure qualification, quality control of welded joints, and the application of these standards in industrial practice. For the welding of a pipe joint made of titanium, the welding method used was gas tungsten arc welding (GTAW) with an inert gas shielding. Upon completion of non-destructive testing and mechanical testing, it was determined that the parameters in the welding procedure were adequate, and based on the test results, it is possible to proceed with the welding procedure qualification
Variations on the Author
No full text“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
No full textWe 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
No full textWe 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
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