1,720,970 research outputs found
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
Applied operations research methodologies on the optimal design and operation of construction and demolition materials reuse and recycling networks
No full textAs the growing amount of waste created by the construction industry poses severe environmental challenges, environmentally conscious construction processes have emerged as an issue of increasing importance for both the industry and society at large. The proper management of the construction and demolition (C&D) waste, which constitutes the major solid waste stream in the European Union (apart from mining and farm waste) appears to be of great merit.
Aim of this thesis is the examination of different aspects regarding C&D waste management, by the development of innovative qualitative and quantitative methodologies. The thesis consists of two parts.
In the first part, a holistic methodological framework is presented in order to manage effectively the generated waste flows from the construction and demolition activities. The decisions of the proposed framework examine different issues on C&D waste management during the entire lifecycle of construction projects and are classified in three levels: strategic, tactical and operational level.
In the second part, the development of five novel integrated models for optimizing the reverse logistics processes of end-of-life (EOL) buildings/construction sites is presented. The critical decisions of the proposed models include among others: (i) the determination of the optimal deconstruction depth for each EOL construction site before the demolition process, and (ii) the design of an effective transportation and recovery network for shipping deconstruction products and waste from deconstruction/demolition sites to potential recyclers/customers and waste disposal sites. Finally, the development of a multiple objective mathematical programming model is presented. The purpose of this decision-support optimization methodology is
the maximization of the total profit and the minimization of the required time, taking into account financial, environmental, regulatory and technological constraints.
The applicability of the proposed models is illustrated on specific case studies and interesting managerial insights regarding the behavior of the optimal solutions are presented. Finally, the main conclusions and useful directions for future research are provided.Στόχος της παρούσας διδακτορικής διατριβής είναι η προσέγγιση του προβλήματος της διαχείρισης των παραγόμενων δομικών αποβλήτων μέσω της ανάπτυξης καινοτόμων και άμεσα εφαρμόσιμων ποιοτικών και ποσοτικών μεθοδολογιών, με γνώμονα την εφαρμογή, από πλευράς των επιχειρήσεων που δραστηριοποιούνται στον κατασκευαστικό τομέα, πολιτικών διαχείρισης των δομικών αποβλήτων, φιλικών προς το περιβάλλον και το ευρύτερο κοινωνικό σύνολο.
Σε πρώτη φάση, αναπτύχθηκε ένα ολοκληρωμένο μεθοδολογικό πλαίσιο λήψης αποφάσεων για τη διαχείριση των παραγόμενων δομικών αποβλήτων από κατασκευαστικές εργασίες. Παράλληλα, για την καλύτερη αξιολόγηση των αποφάσεων, πραγματοποιήθηκε ταξινόμησή τους σε τρία ιεραρχικά επίπεδα: στρατηγικό, τακτικό και επιχειρησιακό επίπεδο.
Σε δεύτερη φάση, αναπτύχθηκαν ποσοτικά πρότυπα βελτιστοποίησης για την υποστήριξη διαδικασιών λήψης αποφάσεων στο εξεταζόμενο ερευνητικό πεδίο. Ο στόχος της δεύτερης φάσης ήταν η βελτιστοποίηση της σχεδίασης και ανάπτυξης δικτύων αντίστροφων εφοδιαστικών αλυσίδων δομικών υλικών που παράγονται στη φάση της κατεδάφισης κατασκευών που βρίσκονται στο τέλος της ωφέλιμης ζωής τους, μέσω της εφαρμογής κατάλληλων μεθόδων επιχειρησιακής έρευνας. Τα πρότυπα που αναπτύχθηκαν επιδιώκουν τη μεγιστοποίηση του συνολικού κέρδους εξετάζοντας: (α) τη διαχείριση των εργασιών κατεδάφισης και τον καθορισμό των σταδίων εκτέλεσης των εργασιών επιλεκτικής αποδόμησης, με γνώμονα τη μέγιστη δυνατή ανάκτηση δομικών υλικών, (β) την ανάκτηση συγκεκριμένων δομικών υλικών κατά την εκτέλεση εργασιών αποσυναρμολόγησης κτιρίων, (γ) τη διαχείριση των παραγόμενων δομικών υλικών (διαχείριση εντός ή εκτός εργοταξίου) και (δ) την επιλογή των τελικών παραληπτών για τα παραγόμενα δομικά υλικά. Για το σύνολο των αποφάσεων λήφθηκαν υπόψη οικονομικά, τεχνολογικά περιβαλλοντικά και νομοθετικά κριτήρια.
Τέλος, παρουσιάζεται η ανάπτυξη ενός προτύπου πολυκριτηριακού μαθηματικού προγραμματισμού (Multiple Objective Mathematical Programming), που είναι ειδική περίπτωση προβλημάτων προγραμματισμού στόχων (Goal Programming) με στόχο τη ταυτόχρονη και σταθμισμένη μεγιστοποίηση του συνολικού κέρδους του συστήματος και την ελαχιστοποίηση του απαιτούμενου χρόνου εκτέλεσης εργασιών για την ανάκτηση και διαχείριση των δομικών υλικών.
Τα κυριότερα συμπεράσματα της διατριβής προέκυψαν από την ανάπτυξη των ποιοτικών και ποσοτικών μεθοδολογιών λήψης αποφάσεων σχετικά με τη διαχείριση των παραγόμενων δομικών υλικών και παρουσιάζονται στο τελευταίο κεφάλαιο τη διατριβής
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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