171,208 research outputs found
Book review : Agricultural extension for women farmers in Africa by Katrine A. Saito, C. Jean Weidemann
No full textReview of: Katrine A. Saito, C. Jean Weidemann. Agricultural extension for women farmers in Africa. Washington DC: World Bank, 199
Decision noise may mask criterion shifts: Reply to Balakrishnan and MacDonald (2008)
No full textJ. D. Balakrishnan and J. A. MacDonald (2008) argue that RTbased measures of signal detection processes provide evidence against signal detection theory’s notion of a flexible decision criterion. They argue that this evidence is immune to the alternative explanation proposed by S. T. Mueller and C. T. Weidemann (2008), that decision noise may mask criterion shifts. We show that noise in response times can produce the same effects as are produced by noise in confidence ratings. Given these results, the evidence is not sufficient to categorically reject the notion of a flexible response policy implemented through shifts in a decision criterion
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
Sugar beet infecting benyviruses: mechanisms involved in the virus-host interaction
No full textBeet necrotic yellow vein virus (BNYVV), the causal agent of Rhizomania, is the model species of Benyvirus genus together with Beet soil-borne mosaic virus (BSBMV). Both viruses are vectored by Polymyxa betae. By the use of full-length clones from all genomic RNAs, molecular interactions between plant and Benyviruses are being investigated exploiting biological, epidemiological and molecular similarities/divergences between BNYVV and BSBMV.
Results. cDNA copies from all BSBMV RNAs and BNYVV (type P) RNA-1 and 2 have been successfully synthesized and infectivity of the in vitro transcribed RNAs evaluated through rub-inoculation onto Chenopodium quinoa plant leaves. BSBMV RNA2 and BNYVV (type P) RNA-1 cDNA clones are not infectious and still need to be modified. A molecular characterization of chimeric strain consisting of B-type RNA-1 and P-type RNA-2 in comparison with B-type RNA-1 and RNA-2 will be reported. Difference on the expression level of proteins encoded by BNYVV P/B-type RNA-3 (p25), RNA-4 (p31) and RNA-5 (p26) have been evidenced
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
Is Simplicity an Adequate Criterion of Theory Choice
No full textGöhner J, Kaiser MI, Suhm C. Is Simplicity an Adequate Criterion of Theory Choice. In: Mössner N, Schmoranzer S, Weidemann C, eds. Richard Swinburne. Christian philosophy in a modern world. Münstersche Vorlesungen zur Philosophie. Vol 11. Berlin: De Gruyter; 2008: 33-45
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
Correction to: Imaging of Bronchial Pathology in Antibody Deficiency: Data from the European Chest CT Group (Journal of Clinical Immunology, (2019), 39, 1, (45-54), 10.1007/s10875-018-0577-9)
No full textIn the original version of this article unfortunately two authors were missing: Dr. Jürgen Weidemann and Dr. Daniel Berthold. The correct list of authors is presented above
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
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