170,208 research outputs found
The Sociocultural Forms of Mobile Personal Photographs in a Cross-Media Ecology: Reflections Starting from the Young Italian Experience
No full textIncreasingly, snapshots taken with mobile phone appear to be living a less autonomous life, as they are ever more involved into intense processes of circulation and cross-media mobility. While camera phones are a well-established means for the production and display of pictures in contexts of physical co-presence, the archival and exchange functions appear to have been absorbed by online communicative and social practices.
Our research revolves around three main issues: a) the effects of the new internet/photography merge (particularly, the new opportunities for transmission and sharing) on the social uses of personal photographs; b) the changes in the status of mobile photography and of its audience due to the online re-location of image collections; c) the implications for mobile communication studies.
These points will be addressed in two steps. I will first trace an overall picture of these practices in the context of teens and young Italians digital cross-media consumptions (drawing on empirical qualitative data). My discussion is then contextualised in light of other recent contributions on the topic. I argue that the social uses and meanings of personal mobile photographs that are reiterated and reinforced in the present phase were already well-established in the pre-web 2.0 Italian camera phone culture. I interpret this as underscoring both the intrinsically relational nature of these practices, and their basic orientation towards micro-community maintenance and strengthening
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
Spaces of Inclusion - An explorative study on needs of refugees and migrants in the domain of media communication and on responses by community media
No full textCOMMIT – Community Media Institute is based in Austria and works in the field of media training and research. COMMIT was commissioned by the Information Society Department of Council of Europe Directorate General of Human Rights and Rule of Law to realize this study. The Study consist of three sections which have been delivered by different experts and a common section of Conclusions and recommendations. The authors are (following the structure of the report): Section I: Community Media in Europe - an overview Salvatore Scifo, senior lecturer in Communication & Social Media at the School of Journalism, English and Communication at Bournemouth University, UK Section II: Study based on ethnographic interviews with refugees in Austria Jonas Hassemer, PhD candidate at the Linguistics Department, University of Vienna, A Brigitta Busch, professor at the Linguistics Department, University of Vienna, A Section III: The right to have a voice – Portraits of community media productions by migrants and refugees Nadia Bellardi, journalist and transcultural consultant, C
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
Recurrence of endometrial polyps
No full textAims: To estimate the recurrence rate of patients with endometrial polyps and to evaluate whether the recurrence can be correlated with the histopathologic feature of the polyp.
Methods: Two hundred eighty-two women with endometrial polyps in both pre-or post-menopausal period and suffering from abnormal uterine bleeding or not were treated by resectoscopic surgery in a tertiary university hospital and were subsequently followed to check for polyp recurrence.
Results: Polyp recurrence rate after hysteroscopic surgery and correlation among recurrence and main demographic, hysteroscopic and histopathologic characteristics were analyzed. During mean ± SD follow-up period of 26.3 ± 19.7 months, the overall recurrence rate was high (13.3%) and did not vary (p = N.S.) with age, parity, weight or other demographic characteristics of the patients nor with the hysteroscopic appearance. On the contrary, the histopathologic features showed significant differences between patients with and without polyp recurrence. Recurrence rate was higher (p < .001) in women with histopathologically hyperplastic polyps without atypia and lower (p < .001) in women with benign polyps.
Conclusion: The study shows that after resectoscopic polypectomy the recurrence rate of endometrial polyps is high (13.3%). Moreover, the hyperplastic polyps without atypia recur more frequently than benign ones
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