170,550 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
De l'Age du Fer au 1er siècle après J.-C. : vestiges d'habitats à Hastingues (Landes) (Fouille de sauvetage sur le tracé de l'autoroute A 64)
No full textOn the outline of the highway A 64, an emergency excavation has been done in the Hastingues site in 1988. The excavation which has concerned an area of 3 ha has shown précarious habitats with secondary structures (fire places, pits, ditch). This remains concerned 3 periods (1er Iron Age, II-I century before J.-C. , begining of the I century after J.-C.). This excavation shows a certain interest as it is original in this region, very poor of this known type of habitats ; it is also noteworthy through the abondance of ceramics which have been discovered in this context.Sur le tracé de l’autoroute A 64, le site d’Hastingues a fait l’objet d’une fouille de sauvetage en 1988. La fouille, portant sur une surface de près de 3 hectares, a mis au jour des habitats précaires dotés de structures annexes (foyers, fosses dépotoirs, fossé). Ces vestiges appartiennent à différentes périodes (Premier Age du Fer, IIe siècle-Ier siècle avant J.-C., début du 1er siècle après J.-C.). Le site fouillé présente un intérêt certain du fait de son originalité dans la région, très pauvre en habitats connus de ce type ; il est aussi remarquable par l’abondance du mobilier céramique découvert dans ce contexte.Riuné-Lacabe Sylvie, Tison Suzanne. De l'Age du Fer au 1er siècle après J.-C. : vestiges d'habitats à Hastingues (Landes) (Fouille de sauvetage sur le tracé de l'autoroute A 64). In: Aquitania : une revue inter-régionale d'archéologie, tome 8, 1990. pp. 187-228
Mitomycin C in highly myopic eyes - Author reply
No full textOphthalmology. 2005 Feb;112(2):208-18; discussion 219.
Mitomycin C modulation of corneal wound healing after photorefractive keratectomy in highly myopic eyes.
Gambato C, Ghirlando A, Moretto E, Busato F, Midena E.
SourceRefractive Surgery Service and Antimetabolite Therapy Research Unit, Department of Ophthalmology, University of Padova, Padova, Italy.
Abstract
PURPOSE: To evaluate the role of topical mitomycin C in corneal wound healing (CWH) after photorefractive keratectomy (PRK) in highly myopic eyes.
DESIGN: Prospective, double-masked, randomized clinical trial.
PARTICIPANTS: Seventy-two eyes of 36 patients affected by high (>7 diopters) myopia.
METHODS: In each patient, one eye was randomly assigned to PRK with intraoperative topical 0.02% mitomycin C application, and the fellow eye was treated with a placebo. Postoperatively, mitomycin C-treated eyes received artificial tears (3 times daily, tapered in 3 months), whereas the fellow eye was treated with fluorometholone sodium 2% and artificial tears (3 times daily, tapered in 3 months).
MAIN OUTCOME MEASURES: Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), contrast sensitivity, manifest refraction, and biomicroscopy. Contrast sensitivity was determined using the Pelli-Robson chart. Corneal confocal microscopy documented CWH.
RESULTS: Mean follow-up was 18 months (range, 12-36). No side effects or toxic effects were documented. At 12-month follow-up examination, UCVAs (logarithm of the minimum angle of resolution) were 0.4+/-0.48 and 0.5+/-0.53 (P = .03) in mitomycin C-treated eyes and corticosteroid-treated eyes, respectively. At 1 year, corneal haze developed in 20% of corticosteroid-treated eyes, versus 0% of mitomycin C-treated eyes. At 12, 24, and 36 months, corneal confocal microscopy showed activated keratocytes and extracellular matrix significantly more evident in untreated eyes (Ps = 0.004, 0.024, and 0.046, respectively).
CONCLUSION: Topical intraoperative application of 0.02% mitomycin C can reduce haze formation in highly myopic eyes undergoing PRK.
Comment in
Ophthalmology. 2006 Feb;113(2):357; author reply 357-8
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
Dedans et dehors. L’uso della sezione nei libri e nei fumetti di Annette Tison e Talus Taylor
No full textTra le diverse forme della rappresentazione le proiezioni
con il metodo di Monge sono quelle che
maggiormente si distaccano dall’esperienza visiva
e richiedono competenze di lettura grafica e capacità
di astrazione. Tra le applicazioni al disegno
di architettura, poi, la sezione è certamente quella
che, in primis, mette in questione la distanza
tra immagine e ‘forma’ e assume a oggetto della
mimesi rappresentativa l’intima struttura degli
edifici piuttosto che la loro apparenza visibile.
Ciononostante, nell’illustrazione per l’infanzia la
sezione verticale (in minore misura la pianta) ha
una tradizione solida e corposa.
Il presente lavoro prende in esame l’uso della sezione
nell’opera di Annette Tison (architetto) e Talus
Taylor (matematico e naturalista), noti principalmente
per aver dato vita al celebre personaggio Barbapapa
ma autori in realtà di numerosi libri illustrati
e fumetti per l’infanzia, dedicati a temi diversificati
e in gran parte rivolti a un pubblico molto giovane,
compreso quello in età prescolare. A partire dall’analisi
di un campione di oltre novanta volumi (tra libri,
riviste e albi a fumetti) pubblicati in Italia, Francia e
Stati Uniti tra i primi anni Settanta e la metà degli
anni Ottanta, il saggio analizza i diversi usi che gli
autori fanno della sezione. Tali applicazioni spaziano
da quella più tradizionale che consente ai giovani
lettori di ‘entrare’ nelle case per scoprire la vita dei
personaggi tra le mura domestiche, ad altre più insolite
e mirate a trasmettere un contenuto genuinamente
tecnico, raro nelle proposte per questa fascia
d’età. Esplorando queste illustrazioni è infatti possibile
trovare elementi strutturali, macchine, dettagli
architettonici, caratteri costruttivi dell’edilizia storica
analizzati con precisione, fino ad arrivare a testi specificamente
dedicati alla progettazione architettonica
tout court e all’uso del disegno ai fini progettuali. Nonostante la spontaneità, l’immediatezza e l’apparente
elementarità dei disegni, dalle illustrazioni
emerge, a uno sguardo più attento, un contenuto
tecnico-disciplinare composito, attinente all’architettura,
all’ingegneria, alla meccanica con incursioni
nelle scienze naturali e nelle stesse discipline
del disegno tecnico che appare non solo come applicazione
ma anche come tema stesso della narrazione.
Della trasmissione di questi contenuti la sezione
si fa veicolo privilegiato e specifico, con una
naturalezza e una capacità di entrare in sintonia
con i contesti narrativi e gli immaginari dell’infanzia
che pochi altri autori hanno dimostrato con
pari pertinenza e ampiezza di produzione.Among the different representation forms,
projections using Monge’s method are the most
detached from the visual experience and require
graphic reading and abstraction skills. Among
the orthographic projection method applications
to architectural drawing, the section is certainly
the one that, first of all, requests the distance
between image and ‘form’ and assumes as the
object of representative mimesis the intimate
structure of buildings rather than their visible
appearance. Nevertheless, in illustration for
children, the vertical section (to a lesser extent
the plan) has a solid, full-bodied tradition.
This essay examines the use of the section in the
work of Annette Tison (architect) and Talus Taylor
(mathematician and naturalist), mainly known
as creators of the famous character Barbapapa,
but also authors of numerous illustrated books
and comics for children, dedicated to a variety
of themes and largely aimed at a very young
audience, including preschoolers.
Starting from the analysis of a sample of over ninety
volumes (including books, journals and comic
books) published in Italy, France, and the United
States between the early 1970s and mid-1980s, the
paper analyses the different uses the authors make
of the section. These uses range from the more
traditional one that allows young readers to ‘enter’
homes to discover the characters’ lives in their
home to more unusual ones. Some drawings indeed
transmit a genuinely technical content, rare in the
proposals for this age group. In these illustrations,
we find structural elements, machines, architectural
details, and precise portraits of historical buildings’
construction features. Furthermore, some works
specifically concern the theme of architecture
design tout court and drawing for design purposes. Despite the spontaneity, naturalness, and
apparent simplicity of the drawings, the
illustrations reveal, at a closer look, a composite
technical-disciplinary content relating to
architecture, engineering, mechanics, with forays
into the natural sciences and the disciplines
of technical drawing itself, which appears not
only as an application but also as a theme of the
narrative. The sections become privileged and
specific medium for these contents in Tison and
Taylor’s illustrations. In their works, drawings
certainly witness a high and rare degree of
harmony with the childhood narrative and
imagery, as a few times before
Notulae: 1435-1438. Eclipta prostrata (Asteraceae), Lindernia dubia (Linderniaceae), Cyperus glomeratus (Cyperaceae), Dichondra micrantha (Convolvulaceae). In: Nepi C., Peruzzi L., Scoppola A. (eds.), Notulae alla Checklist della flora italiana: 5
No full textA Multi-Language Comparison of Influences on Author Verification using Character N-Grams
No full textWe create a new multi-language corpus for author verification based on Wikipedia talkpages, and evaluate the influence that differences in topic and time have on character n-gram author profiles. Topic alignment between two texts is found to increase author verification precision, and an authors writing style is found to change over time, but not more significantly after 3 years than after 1 year.Information ArchitectureWISElectrical Engineering, Mathematics and Computer Scienc
A 0.12mm<sup>2</sup> Wien-Bridge Temperature Sensor with 0.1°C (3σ) Inaccuracy from -40°C to 180°C
No full text Resistor-based temperature sensors can achieve much higher resolution and energy efficiency than conventional BJT-based sensors [1], but they typically occupy more area (> 0.25 mm 2 ) and have lower operating temperatures (le 125 {circ} {C}) [2]-[4]. This work describes a 0.12mm 2 resistor-based sensor that uses a Wien-bridge (WB) filter to achieve 0.1 {circ} {C} (3 sigma) inaccuracy from - 40 {circ} {C} to 180 {circ} {C}. Compared to a state-of-the-art WB sensor [4], it occupies 6 × less area and achieves comparable relative accuracy over a 76% wider operating range. Session 10.3 Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Electronic InstrumentationMicroelectronic
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