169,732 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
Sweet Idleness, but Why? How Cognitive Factors and Personality Traits Affect Privacy-Protective Behavior
No full textAccording to media and research, users have a high interest in protecting their personal data. Alt-hough privacy-enhancing technologies (PETs) can help secure users’ privacy, only very few make use of PETs – even if some of these are gratis. Given the overall impact for individuals, good answers are needed, which we seek in both cognitive and person-ality factors. By drawing on protection motivation theory (PMT) and the five-factor model (FFM), we seek to explain individuals’ intention to use PETs. Our results support the suitability of the PMT in the PET context. In particular, perceived response effi-cacy has a strong effect on individuals’ intention to use PETs. Most personality factors have no or some-what unexpected influences, but due to the measure-ments’ brevity further research with extended per-sonality scales is needed to validate these results
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
CCDC 1911879: Experimental Crystal Structure Determination
No full textYONBUB : 4-(2-carboxy-2-hydroxyethenyl)-N,N,N-trimethylanilinium iodide acetonitrile solvate hemihydrate Space Group: P 1 (2), Cell: a 10.2439(3)Å b 11.9323(3)Å c 14.7966(4)Å, α 72.9180(10)° β 83.3110(10)° γ 65.7470(10)° Related Article: Mathias Paul, Katrin Peckelsen, Thomas Thomulka, Jörg Neudörfl, Jonathan Martens, Giel Berden, Jos Oomens, Albrecht Berkessel, Anthony J. H. M. Meijer, Mathias Schäfer|2019|Phys.Chem.Chem.Phys.(PCCP)|21|16591|doi:10.1039/C9CP02316
CCDC 1825830: Experimental Crystal Structure Determination
No full textYONCAI : 3-[4-(dimethylamino)phenyl]-2-hydroxyprop-2-enoic acid 4-(dimethylamino)benzaldehyde Space Group: P 1 (2), Cell: a 8.6578(3)Å b 10.0035(4)Å c 11.6371(4)Å, α 78.7640(10)° β 75.9780(10)° γ 67.1630(10)° Related Article: Mathias Paul, Katrin Peckelsen, Thomas Thomulka, Jörg Neudörfl, Jonathan Martens, Giel Berden, Jos Oomens, Albrecht Berkessel, Anthony J. H. M. Meijer, Mathias Schäfer|2019|Phys.Chem.Chem.Phys.(PCCP)|21|16591|doi:10.1039/C9CP02316
CCDC 2006542: Experimental Crystal Structure Determination
No full textFAJGAC : N,N,N-trimethyl-2-(4-methyl-1,3-thiazol-5-yl)ethan-1-aminium bromide Space Group: C 2/c (15), Cell: a 20.4384(11)Å b 11.3043(6)Å c 12.8047(7)Å, α 90° β 126.8440(10)° γ 90° Related Article: Mathias Paul, Katrin Peckelsen, Thomas Thomulka, Jonathan Martens, Giel Berden, Jos Oomens, Jörg-M. Neudörfl, Martin Breugst, Anthony J. H. M. Meijer, Mathias Schäfer, Albrecht Berkessel|2020|Chem.-Eur.J.|27|2662|doi:10.1002/chem.20200345
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
CCDC 2006541: Experimental Crystal Structure Determination
No full textFAJFUV : 3,4-dimethyl-5-[2-(trimethylazaniumyl)ethyl]-1,3-thiazol-3-ium bis(iodide) Space Group: P 21/c (14), Cell: a 10.5165(2)Å b 10.3663(2)Å c 13.9601(3)Å, α 90° β 90.9390(10)° γ 90° Related Article: Mathias Paul, Katrin Peckelsen, Thomas Thomulka, Jonathan Martens, Giel Berden, Jos Oomens, Jörg-M. Neudörfl, Martin Breugst, Anthony J. H. M. Meijer, Mathias Schäfer, Albrecht Berkessel|2020|Chem.-Eur.J.|27|2662|doi:10.1002/chem.20200345
CCDC 1469242: Experimental Crystal Structure Determination
No full textNEHTIG : (4-(dimethylamino)phenyl)(oxo)acetic acid Space Group: P 21/c (14), Cell: a 20.0813(6)Å b 7.5198(2)Å c 12.1237(3)Å, α 90° β 91.5650(10)° γ 90° Related Article: Mathias Schäfer, Katrin Peckelsen, Mathias Paul, Jonathan Martens, Jos Oomens, Giel Berden, Albrecht Berkessel, Anthony J. H. M. Meijer|2017|J.Am.Chem.Soc.|139|5779|doi:10.1021/jacs.6b10348,An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
CCDC 1824032: Experimental Crystal Structure Determination
No full textFAJBEB : (mesityl)(1,3,4-triphenyl-4,5-dihydro-1H-1,2,4-triazol-5-yl)methanone Space Group: F d d 2 (43), Cell: a 33.0551(7)Å b 33.5205(8)Å c 8.3459(2)Å, α 90° β 90° γ 90° Related Article: Mathias Paul, Katrin Peckelsen, Thomas Thomulka, Jonathan Martens, Giel Berden, Jos Oomens, Jörg-M. Neudörfl, Martin Breugst, Anthony J. H. M. Meijer, Mathias Schäfer, Albrecht Berkessel|2020|Chem.-Eur.J.|27|2662|doi:10.1002/chem.20200345
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