1,720,970 research outputs found
Selected aspects of transportation system modelling
No full textTyt. z nagłówka.Bibliogr. s. 24.Dostępny również w formie drukowanej.STRESZCZENIE: W artykule przedstawiono wybrane aspekty modelowania rynku usług transportowych ze szczególnym uwzględnieniem modelowania systemów przewozowych. Przedstawiono metodę, poprzez sformułowanie zadania optymalizacyjnego umożliwiającą tworzenie harmonogramów obsługi transportowej rejonu. ABSTRACT: The paper presents selected aspects of the transport services market, particularly issues related to the transportation system modelling. A method for scheduling of regional transport services through formulation of an optimisation problem is discussed. SŁOWA KLUCZOWE: system transportowy, modelowanie usług transportowych, harmonogram usług transportowych. KEYWORDS: transportation system, transportation services modelling, transportation servicing schedule
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
Multicriteria Evaluation of Designing Transportation System within Distribution Sub-Systems
No full textThe paper presents the problem of designing transportation system for goods distribution with usage of multicriteria
decision supporting method. The general characteristic of transportation system as an element of distribution system
was presented. Moreover, the distribution system was identified as a one of the most important elements of supply
chain which aims in making products available in place and time matching client needs. In further part the problem
was mathematically formalized to optimization task. Analyzing the problems of modeling conveying system forces
claim that decisions taken within area of transport organization consist in solving complex decision problems.
Complexity follows from the demand of best decision according to many aspects. Solution must ensure othe best
realization of all partial criteria (aims) taken into account during decision making process. The article contains
characteristics of methods of multicriteria evaluation with regard to short literature review. The emphasis was placed
on ELEKTRA and MAJA methods which can be applied in the evaluation of complex decision problems in
transportation systems. The last part of the article is verifies of presented issues by tneans of numerical experiment
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
Designing of Functional Areas of Intermodal Terminals
No full textThis article is about the design of intermodal terminals. The classification of intermodal terminals and their role in the transport chain have been presented. Particular attention has been paid to the design of functional zones of the intermodal terminal serving both containers as well as swap bodies and semi-trailers. Technical and technological requirements for these zones have been determined. Theoretical example of calculation of selected functional zones of intermodal terminal is presented
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