1,720,964 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
Polepszenie parametrów technicznych infrastruktury kolejowej na przykładzie podsystemu „Sterowanie” posiadającego certyfikat weryfikacji WE
No full textW ostatnim dziesięcioleciu asygnowane w Polsce środki finansowe na modernizację infrastruktury kolejowej przynoszą wymierne korzyści, w postaci zwiększenia długości linii kolejowych, na których nastąpił wzrost prędkości pociągów. Oprócz
modernizacji torów kolejowych wraz z towarzyszącą infrastrukturą urządzeń i sieci elektroenergetycznych lub urządzeń sterownia ruchem kolejowym, nowo budowane linie kolejowe są wyposażane w urządzenia przytorowe systemu ERTMS/ETCS.
Zgodnie z przepisami prawa europejskiego i krajowego, wszystkie modernizowane lub doposażone linie kolejowe podlegają
procesowi certyfi kacji. Wśród linii z systemem klasy A, mających certyfikat weryfikacji WE, zdarzają się przypadki, w których należy podjąć działania polepszające parametry eksploatacyjne infrastruktury kolejowej. W artykule przeanalizowano
różne procesy inwestycyjne i podjęto próbę odpowiedzi na pytanie, jaki wpływ mają realizowane przetargi na zabudowane
urządzenia przytorowe systemu ERTMS/ETCS, które legitymizują się ważnością wydanego certyfikatu weryfikacji WE i czy
te urządzenia mają zezwolenie na dopuszczenie do eksploatacji wydane przez Prezesa Urzędu Transportu Kolejowego
Fulfilling the interoperability requirements of comprehensive networks
No full textRealizacja wielu inwestycji kolejowych jako główny cel wskazuje podniesienie efektywności systemu kolejowego, a dzięki jego cechom łatwiejsza staje się integracja go w konkurencyjnym rynku transportowym. Zwiększenie integracji sektora transportowego jest jednym z podstawowych elementów urzeczywistnienia rynku wewnętrznego i kolej stanowi istotną część sektora transportu, który zmierza w kierunku mobilności zgodnej z zasadami zrównoważonego rozwoju. Modernizowane linie kolejowe, wpisujące się w transeuropejską sieć transportową (TEN-T) lub korytarzy europejskiego systemu zarządzania ruchem kolejowym (ERTMS) stanowią również sieć kolejowych towarowych korytarzy (RFC). Zgodnie z wymaganiami prawa europejskiego, wyznaczająca terminy wdrożenia interoperacyjności, infrastruktura sieci kompleksowych będzie zmuszona do dostosowania się do tych wymagań. Na przykładzie podsystemu sterowanie niniejszy artykuł nakreśla skalę problemu związanego z wdrożeniem interoperacyjności w odniesieniu do terminali kolejowo-drogowych stanowiących sieć kompleksową sieci RFC.The implementation of many railway investments indicates as the main goal increasing the efficiency of the railway system, and thanks to its features it becomes easier to integrate it in the competitive transport market. Increasing the integration of the transport sector is one of the cornerstones of the completion of the internal market and rail is an important part of the transport sector moving towards sustainable mobility. The modernized railway lines, which are part of the Trans-European Transport Network (TEN-T) or European Rail Traffic Management System (ERTMS) corridors, also constitute the network of rail freight corridors (RFC). Pursuant to the requirements of European law, setting the deadlines for implementing interoperability, the infrastructure of comprehensive networks will be forced to adapt to these requirements. Using the example of the control subsystem, this article outlines the scale of the problem related to the implementation of interoperability in relation to rail-road terminals constituting the comprehensive network of the RFC network
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
Upgrading the railway infrastructure technical parameters using the example of the Control-Command and Signalling subsystem with the EC verification certificate
No full textThe financial resources allocated for upgrading the railway infrastructure in Poland over the last decade have brought measurable benefits in the length of railway lines with increased speed. In addition to the upgrade of railway tracks with supporting infrastructure, electrical power equipment and networks or control-command and signalling equipment, further
railway lines are equipped with ERTMS/ETCS track-side equipment. All upgraded or retrofitted railway lines are subject
to a certification process in accordance with European or national law. Among these lines with the A-Class system and the
EC certificate of verification, there are cases where action should be taken to improve the performance of the railway infrastructure. Analysing various investment processes, the article looks at the impact of the tenders for ERTMS/ETCS track-side
equipment, which legitimize the validity of the issued EC verification certificates, and whether they have authorisation for
placing in service issued by the President of Urząd Transportu Kolejowego (Office for Railway Transport)
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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