1,720,964 research outputs found
Crearea și optimizarea constructivă a unei prese pentru compactarea plasei de pescuit
Get PDFFişierul ataşat conţine: Rezumat, Summary, Cuprins, Introducere, Bibliografie.Lucrarea dată se referă la studiul proiectării şi optimizării unei prese pentru compactarea plasei
de pescuit care se foloseşte la nivel industrial şi face parte din ultimele etape a lanţului tehnologic de
producţie şi întreţinere a plaselor de pescuit. în urma optimizării produsului din considerente tehnice au
fost puse restricţii ce ţin de dimensiunile de gabarit, masa şi material folosite. Au fost analizate mai
multe standarde europene dar şi norvegiene. S-a folosit intensiv reţeaua internet şi resursele publice de
informaţie. Se constata că obiectivul lucrării a fost atins în toate aspectele şi cerinţele necesare.This work refers to the study of the design and optimization of a press for compacting the
fishing net that is used at industrial level and is part of the last stages of the technological chain of
production and maintenance of fishing nets. Following the optimization of the product for technical
reasons, some restrictions were placed related to gabarit dimesions, mass and material used. Several
European and Norwegian standards were analyzed. The Internet and public information resources have
been used extensively. It is found that the objective of the work has been achieved in all aspects and
requirements
Modeling and analysis solutions for metal structures of support type
No full textFişierul ataşat conţine: Rezumat, Summary, Cuprins, Referinte.Lucrarea dată se referă la studiul de calcul de rezistență a structurei noului SJ-Cradle (detip
suport) de depozitare pentru Slip Joint, incluzând structura existentă Riser rack (suport al țevelor) și
structura punții principale care le sprijină pentru a îndeplini cerințele și reglementările conform
standartelor Det Norske Veritas (DNV). Au fost analizate standartele DNV-GL Offshore și DNV-GL ce
se referă la recomandarea practică cu privirea la flambarea panourilor și coloanelor din grinzi. Sa
analizat noua zonă de construirea a structurei metalice pentru SJ-Cradle, studiindu-se desenele si
standartelor cu privire la structura puntei principale a COSL Prospector, luându-se în calculFactorul de
proiectare la încărcare și rezistență (LRFD). LRFD esteutilizat pentru performarea calculelor,
implicând sarcini neprevăzute, factori neprevazuți ce influenţează rezistența materialului. Se constata
că în urma calcului de rezistentă realizat pentru structura metalică a SJ-Cradlesatisface condițile de
rezistență cu privire la limitele cerințelor standartelor DNV.This project refers to the study of strength calculation of the structure of the new SJ-Cradle storage for
Slip Joint, including the existing structure Riser rackand the structure of the main deck that supports
them to maintain the requirements and regulations according to Det Norske Veritas (DNV) standards.
The calculations are based on DNV-GL Offshore standards. And DNV-GL recommended practice
regarding buckling of stiffened panels and columns. The new construction area of the metal structure
for SJ-Cradle was analyzed, studying the drawings and standards regarding the main deck structure of
COSL Prospector.Was taken into account the Load and Resistance Factor Design format (LRFD) is
used to perform the calculations, implying that uncertainties in loads are represented with load factors
and uncertainties in resistance with material factors. It is found that following the strength calculation
performed for the metal structure of SJ-Cradlesatisfies the resistance conditions regarding the limits of
the requirements of DNV standards
Improving the designing of mechanical technologies through optimized dimensional structures
Get PDFModern trends in technological development related to the use of numerical control machine tools are manifested by minimizing the number of technological operations, installations, operation elements. One of the most effective ways to improve the design of mechanical processing technologies is to create optimal technological dimensional structures. In the paper, optimality requirements are formulated in relation to the elementary dimensional structures and the entire structure. It is shown that a technological dimensional structure is optimal if it is similar to the constructive dimensional structure. Real constructive dimensional structures are very complex and varied, so that the optimality of some sequences of the structure excludes ensuring the optimality of other sequences. Reciprocal structural adaptations are required, which can be done by constructively resizing the equivalent part. As a criterion for the resizing, the non-admission of the increase in the tolerance of the machining allowance is manifested.Tendințele moderne în dezvoltarea tehnologică legate de utilizarea mașinilor-unelte cu comandă numerică se manifesta prin minimizarea numărului de operații tehnologice, de instalări, de faze tehnologice. Una dintre cele mai eficiente modalități de îmbunătățire a proiectării tehnologiilor de prelucrare mecanică este crearea structurilor dimensionale tehnologice optimale. In lucrare sunt formulate cerințe de optimalitate în raport cu structurile dimensionale elementare şi cu structura întreagă. Se arata ca o structură dimensională tehnologică este optimală daca este asemănătoare cu structura dimensională constructivă. Structurile dimensionale constructive reale sunt foarte complexe și variate, astfel încât optimitatea unor secvențe ale structurii exclude asigurarea optimității altor secvențe. Sunt necesare adaptări structurale reciproce, care se pot face prin redimensionarea constructivă echivalenta a piesei. În calitate de criteriu al redimensionării se manifesta neadmiterea creşterii toleranţei adaosurilor de prelucrare
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
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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