1,720,999 research outputs found
Ad Novas-Cesenatico from Roman road to Late Antique wooden structures. An interim report on the evaluation test pits and excavation at Cà Bufalini, 2006
Full text linkThis paper presents the preliminary data from excavations undertaken at Cà Bufalini in Cesenatico in April 2006. This was the
pilot fieldwork from which developed the Ad Novas-Cesenatico Project 2008-13 organised by Denis Sami and Neil Christie from
the University of Leicester. During the 2006 season four test trenches were opened. This paper outlines the evidence retrieved
both of late antique (fifth - sixth century AD) wooden structures as well as of a substantial paved Roman road. Potentially, the
Cà Bufalini site may relate to the likely statio of Ad Novas depicted on the Tabula Peutingeriana
EFFECT OF HARVESTING TIME ON VOLATILE COMPOSITION OF BERGAMOT (CITRUS BERGAMIA) ESSENTIAL OIL
No full textBergamot (Citrus bergamia, Risso et Poiteau) is mainly cultivated in Calabria area (Italy) for the extraction of essential oil that is widely used in cosmetics, food and traditional medicine [1]. Quality of essential oil is different throughout the harvest season (November to February), so the aim of the study was to evaluate the volatile composition of essential oil at different harvesting time. Two different cultivars, Femminello and Fantastico were collected at three different times (November, December, January). The fruit peel was grated and the essence collected with a cold extraction, then volatile compounds concentration was determined by SPME GC-MS. Fourty-eight compounds grouped in monoterpenes, monoterpene alcohols, sesquiterpenes, esters and aldehydes were identified according to previous studies [2,3]. Monoterpens was the preponderant group; limonene was the most representative compound with similar concentration both in the varieties and at the three harvesting times. Femminello showed a higher concentration of (Z)--ocimene, β – Mircene and -terpinene, while Fantastico had higher concentration of trans--bergamottene, -pinene and citronellal. The concentration of β-pinene was higher in Fantastico at the second harvest and in Femminello in January; γ – Terpinene concentration was higher in Femminello at the first and last harvest and in Fantastico in December. In the monoterpenes alcohol group, linalool was the most preponderant compound with a significant higher concentration in Femminello and no significative differences among the three harvest times. Between sesquiterpenes, cis - γ – Bisabolene was the most preponderant compound that was more concentrated in Fantastico’s essential oil and showed a significant higher concentration in December and January. Linalyl acetate and nonyl were the most abundant compounds in the ester group, with significant higher concentration in Fantastico. Fantastico seems to be the variety that produces higher VOC’s in essential oil; in addition, the volatile compounds concentration was higher at the second and third harvest time
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
