1,720,959 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
The Evaluation Model: Estimation of Economic, Social and Environmental Impacts of Car Sharing Services
No full textThischapterdescribesamodelabletosimulatecarsharingconfiguration options, taking into account different dimension of sustainability (environment, economy, mobility and social). We studied the possible effects of such options on the mobility system. In order to identify and structure such effects, we used cog- nitive maps, elicited by means of interviews and workshops made with the researchers with different expertise of the Green Move team and territorial stake- holders. Such maps led to the development of a simulation model for the estimation of the options’ effects. Different sub-models are briefly described in terms of inputs, outputs and operating logic. The model has been used in the design of a full-scale
electric car sharing service for the city of Milano
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
Ottimizzazione del posizionamento delle stazioni di un servizio di car sharing : uno strumento a supporto del decision maker
Get PDFLAUREA MAGISTRALEIl servizio di car sharing ha assunto ormai un ruolo importante nell’ambito della mobilità urbana dei cittadini ma presenta, nella città di Milano, ancora delle problematiche irrisolte quali la definizione di un modello di domanda affidabile e che permetta di avere il dato distribuito sulle diverse aree della città, e un sistema di posizionamento delle stazioni che tenga conto degli interessi in gioco.
Ho sviluppato lo studio partendo dalle premesse del progetto europeo nuMIDAS che si pone come obiettivo di costruire nuovi modelli e strumenti per la risoluzione dei problemi riscontrati nell’analisi di alcuni servizi emergenti in ambito urbano, come i servizi in sharing, utilizzando i dati già a disposizione delle città.
Per la risoluzione, ho proposto una metodologia di indagine e di analisi dei dati che prevede la suddivisione dell’area di studio in celle in modo tale da poter avere una maggiore variabilità all’interno della municipalità dei dati raccolti. Ogni cella è caratterizzata dalle informazioni utili per la definizione della domanda e accessibili al pubblico. Le variabili considerate sono state scelte tra quelle indicate dalla ricerca di letteratura condotta e riportata nell’elaborato. I dati relativi ai viaggi effettuati sulla città di Milano, forniti da AMAT, vengono rappresentati in formato geografico e vengono elaborati ed analizzati per renderli compatibili con la suddivisione proposta. Segue la formulazione e la calibrazione di alcuni modelli di domanda lineari con le informazioni disponibili. Infine, è stato costruito uno strumento che permette il posizionamento ottimale delle stazioni a partire dal calcolo di un indice di classificazione assegnato alle celle.
Ciò che emerge dallo studio, è la definizione di un quadro delle caratteristiche fondamentali per la valutazione della domanda di trasporto del servizio e uno strumento di supporto al decision maker utile per definire la posizione delle stazioni al variare degli interessi in gioco, il tutto elaborato attraverso una metodologia di analisi e di rappresentazione replicabile in ulteriori casi di studio.Nowadays car sharing plays an important role for the urban mobility but it still has, in Milan, some issues as the definition of a reliable demand model in order to obtain this information as spread as possible through the city, and a tool to locate new station of the service considering the different interests.
The work starts from the purposes of the European nuMIDAS project where the target is the development of new models and tools to solve the problems the municipalities came up with, using data already available.
In order to solve the problems, I proposed to use a particular methodology to analyse the data. It considers the urban area divided in a regular grid in order to have a higher variability through the city of the collected data. Every cell is characterized by some useful variables, which are available on the municipal database, to define a higher or lower level of demand. I selected the attributes according to the consulted literature reported in this study. The data concerning the trips made by car sharing in Milan, given by AMAT, have been represented in a geographic format and analysed in order to make them compatible to the subdivision proposed. Afterwards, I formulated and calibrated the linear models using the available information. The last elaboration is about the development of the optimization tool for locating new station of the service. This step required the evaluation of a specific index to classify every cell.
What is important to highlight is the definition of a framework concerning all the fundamental variables to evaluate the potential travel demand of the service and a useful tool to locate the new station according to the different interests. Furthermore, the methodology used to elaborate and represent the data is valid and could be applied to analyse other similar study case
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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