170,786 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
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
A 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
A ±25A Versatile Shunt-Based Current Sensor with 10kHz Bandwidth and ±0.25% Gain Error from -40°C to 85°C Using 2-Current Calibration
No full textAccurate current sensing is critical in many industrial applications, such as battery management and motor control. Precise shunt-based current sensors have been reported with gain errors of less than 1% over the industrial temperature range (-40°C to 85°C) [1]–[4]. However, since they are intended for coulomb counting, their bandwidth is limited to a few tens of Hz, making them unsuitable for battery impedance or motor-current sensing. This paper presents a current sensor with a wide (10kHz) bandwidth and a tunable temperature compensation scheme (TCS), which allows it to be flexibly used with different types of shunts while maintaining high accuracy. A low-cost room-temperature calibration scheme is proposed to optimize gain flatness over temperature by exploiting the shunt's self-heating at large currents. Over the industrial temperature range and a ±25A current range, it achieves state-of-the-art gain error (±0.25%) with both low-cost PCB and stable metal-alloy shunts.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
An Article About Albertus C. Van Raalte, Author Unknown, Except for Parts Taken from an Article by Anna C. Post
No full textAn article about Albertus C. Van Raalte, author unknown, except for parts taken from an article by Anna C. Post. The author knew first generation persons in the Holland settlement and therefore, the article has some value.https://digitalcommons.hope.edu/vrp_1890s/1012/thumbnail.jp
Archivist, Archaeologist, Author and the Tactile Window
No full textThe idea that the predominant way of engaging with architecture is through vision is not uncommon but also not always the most appropriate given that buildings are also experienced through tactile interventions. This consequence that emphasises visual aesthetics in order to appreciate and understand architecture probably has much to do with the assumed but rather vaguely defined role of the architect as designer in the practice of architectural design. A resulting misapprehension is that architects designing for visual appreciation think that they are actually designing physical space for embodied tactile engagement.
This prioritisation of vision in the way architects think about and approach design is questioned through the design project of the Tactile Window in which the position of the architect is redefined through inhabiting the roles of archivist, archaeologist and author during the design process.
A 16th century portrait of Queen Elizabeth I known as the Ditchley portrait, currently on display at the National Portrait Gallery is used as the source from which the design of the Tactile Window is derived from and refers back to. Questioning the validity of vision as the sole means of engaging with the work, information about the portrait and working methods gathered from the three carefully chosen positions mentioned above are drawn on and applied to the making of this Tactile Window that becomes an alternative Ditchley portrait. Through exploring the hidden historical and current narratives of and in the existing portrait, the presence of the portrait is alluded to on an alternative physical site. Key to this are the working methods of an invented archival system of design reasoning, the unearthing of archaeological texts and assuming of authorship within the individual frameworks of the roles of archivist, archaeologist and author.
The redefined role of the architect as archaeologist takes onboard the unearthing of associated drawings and writings as well as the methods of organising and applying the recovered information to the system set up by the archivist. This analysis of the graphic and text based information is used to formulate historical narratives that are woven into the design project. Whereas traditional archaeology stresses on the study of a site from a site with quantifiable limits to the physical context, the notion of archaeological sites in this instance refers to the places where the stored information is unearthed. Through the careful process of archiving and analysing this information, a new site that is located within both the physical and historical contexts of interest is discovered. The author then draws upon the elements in the archival system that includes the findings of the archaeologist to construct the alternative Ditchley portrait in this new site of the Echoing Cedar, the result of which bears no visual resemblance to the existing work.
The Tactile Window is a reading of the Ditchley portrait in which information about and in the painting is transformed into a design proposal for an inhabited structure. The intended method of interaction with this alternative portrait is not merely restricted to vision but relies on engagement with the other senses. This experience is enhanced by the interplay with certain site conditions such as wind and rain in order to allude to specific aspects of the Ditchley portrait that are not visually apparent in the existing work.
In the processes of excavating, finding and revealing the hidden information to create this alternative portrait, the effects of the visuals afforded by the existing portrait inadvertently begin to fade as the validity of a single means of visual expression is questioned
Tipificación de Solanum (Solanaceae), especie descrita por Martín de Sessé y Lacasta y José Mariano Mociño
No full textSe confirman o designan los lectótipos, neótipos o epítipos de 16 de los 22 nombres acuñados por Martín de Sessé y Lacasta y José Mariano Mociño que o bien fueron descritos dentro del género Solanum (Solanaceae) o son actualmente reconocidos como parte del mismo): Solanum bifidum, S. cordovense, S. declinatum, S. dichotomum, S. diphyllum, S. lanceifolium, S. lanceolatum, S. lineatum (ambos homónimos), S. longifolium, S. mexicanum, S. nutans, S. sarmentosum, S. scandens, S. tlacotalpense y S. uniflorum. Se incluye una breve introducción explicando la importancia de la Real Expedición Botánica a Nueva España (expedición de Sessé y Mociño) para la botánica de su tiempo, así como las dificultades que entraña neotipificar o lectotipificar los nombres acuñados por éllos. Se incluye el nombre aceptado para cada taxon cuando es posible y cada tipificación se acompaña de una discusión explicando la elección de los especímenes. Todos los tipos nuevos se acompañan de una foto
Determination of important agronomical and quality characters in silage maize cultivars
No full textBu araştırma, 2006 yılında Konya ekolojik şartlarında, at dişi mısır çeşitlerinin silaj verimi ve kalite ile ilgili özelliklerinin incelenerek, bu ekolojiye uygun yüksek verimli ve kaliteli silaj mısır çeşitlerini belirlemek amacıyla yürütülmüştür. ?Tesadüf Blokları? deneme desenine göre üç tekerrürlü olarak kurulan bu araştırmada, 24 at dişi mısır çeşidi kullanılmıştır. Araştırmada silaj verimleri 6795 kg /da (CP-81) ? 10348 kg/da (Lacasta), bitki boyları 298 cm (Lacasta) ? 341 cm (CP-91), bitki ağırlıkları 851 g ( CP-81) -1444 g (CP-91), yaprak sayıları 13.00 adet (Lacasta, ZP-677) ? 18.46 adet (CP-91), yaprak alanları 716.93 cm² (Cadiz) ? 965.41 cm² (CP-91) , yaprak oranları %12.7 (ZP-677) ? %20.5 (CP-91), yaprak ağırlıkları 126.33 g (ZP-677) ? 297.66 g (CP-91) , yaprak genişlikleri 10.70 cm (OSKK-644) ? 12.86 cm (C-955) , yaprak uzunlukları 81.73 cm (Cadiz) ? 108.16 cm (Arifiye) , sap ağırlıkları 394.00 g (Ada- 523) - 699.33 g (Arifiye), sap çapları 22.89 mm ( Turtop) ? 29.62 mm (CP-91), sap oranları % 44.93 (Lacasta) - %56.20 (Arifiye) , ilk koçan yükseklikleri 114.40 cm (Lacasta) ? 187.33 cm (Arifiye) , koçan ağırlıkları 282.33 g (CP-81) ? 453.66 g (CP-91) , koçan oranları % 28.6 (Arifiye) - % 38.2 (DKC-6842) , kuru madde verimleri 1998 kg/da (CP81) ? 3028 kg/da (King) , kuru madde oranları % 24.40 (P-31Y43) - % 32.10 ( OSSK-659) , protein oranları % 4.68 ( Lacasta) - % 6.87 (CP-81) arasında değişmiştir. Bu araştırma sonucunda ?Lacasta?, ?Dracma?, ?C-955?, ?CP-91?, ?King?, ``Truva'', ``Doge'', ``Dako-743'' çeşitleri verim ve kalite yönünden Konya ekolojik şartlarında yetiştirilebilecek uygun silaj mısır çeşitleri olarak ön plana çıkmışlardır.This research has been conducted to determine the silage maize cultivars can be grown for silage yield grain and quality under Konya ecological conditions, examining the silage yield and quality components of maize cultivars in 2006. In this research which arranged in the ? Randomized Complete Blocks Experimental Design? with three replications, and 24 dent corn cultivars were used as material In this research, has been changed silage yield, from 6795 kg /da (CP-81) to 10348 kg/da (Lacasta), plant height from 298 cm (Lacasta) to 341 cm (CP-91), plant weight from 851 g ( CP-81) to 1444 g (CP-91), leaf number from 13.00 (Lacasta , ZP-677) to 18.46 (CP-91), leaf area from 716.93 cm² (Cadız) to 965.41 cm² (CP-91), leaf percent from 12.7 % (ZP-677) to 20.5 % (CP-91), leaf weight from 126.33 g (ZP-677) to 297.66 g (CP-91), leaf width from 10.70 cm (OSKK-644) to 12.86 cm (C-955), leaf lenght from 81.73 cm (Cadız) to 108.16 cm (Arifiye), stem weight from 394 g (Ada- 523) to 699.33 g (Arifiye), stem diameter from 22.89 mm ( Turtop) to 29.62 mm(CP-91), stem percent from 44.93 % (Lacasta) to 56.20 % (Arifiye), first ear height from 114.40 cm (Lacasta) to 187.33 cm (Arifiye), ear weight from 282.33 g (CP-81) to 453.66 g (CP-91), ear percent from 28.6 % (Arifiye) to 38.2 % (DKC-6842), dry matter yield from 1998 kg/da (CP-81) to 3028 kg/da (King), dry matter rate from 24.40 % (P-31Y43) to 32.10 % (OSSK-659), protein rate from 4.68 % (Lacasta) to 6.87 % (CP-81). In this research was recommended that ?Lacasta?, ?Dracma?, ?C-955?, ?CP-91??, ?King?,``Truva??, ``Doge??, ``Dako-743??, maize varieties can be grown for high silage yield and quality under Konya ecological conditions
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