171,069 research outputs found
Turn signature devices into portable consoles through the ENGaming
No full textopenIl presente documento espone il lavoro svolto dal laureando Nicola Baesso, presso
l’azienda ESignWorld S.R.L., durante il tirocinio della durata di circa trecento ore.
Il tirocinio prevedeva inanzitutto lo sviluppo di un applicativo desktop da utilizzare in un device di firma, unendo tecnologie front-end e back-end.
In particolare, era richiesto lo sviluppo dell’applicazione, utilizzando i framework Angular ed Electron.
Inoltre, volendo recuperare i dati dal device di firma, l’applicazione necessitava l’utilizzo di moduli compilati per NodeJS, e scritti in C++.
Lo scopo di tale progetto era dimostrare che il device utilizzato non si limitasse alla semplice firma, ma che potesse essere un ottimo strumento multimediale, in particolare un ottimo strumento per l’utilizzo di videogames.The following document shows the work of Nicola Baesso, for ESignWorld S.R.L., on his 300-hour internship.
The internship was about the development of desktop software to be used via a signature device, using front-end and back-end technologies.
It was required to develop the software via the Angular and Electron frameworks.
The software also needed to use modules, written in C++ and compiled for NodeJS, to get some data from the signature device.
The goal of this project was to show the signature device's capabilities as a good multimedia tool, particularly for video games usage.
The document is entirely written in Italian
Time Resolved Thermal Lens Measurements Of The Thermo-optical Properties Of Nd2o3-doped Low Silica Calcium Aluminosilicate Glasses Down To 4.3 K
No full textIn this work, the thermal lens spectrometry was applied to measure the thermo-optical properties of Nd2O3-doped low silica calcium aluminosilicate glasses as a function of temperature, between 4.3 and 300 K. The thermal relaxation calorimetry was used to determine the specific heat, cp. The results showed a decrease of the thermal diffusivity of about one order of magnitude from 4.3 K up to 300 K, with a T-1 dependence in the interval between 20 and 70 K and a T-0.35 between 4.3 and 20 K. The fluorescence quantum efficiencies of the doped samples were calculated down to 50 K, showing a variation of the order of 12% and 25% for the samples with 0.6 and 1.04 mol% of Nd2O3, respectively. In addition, the temperature corresponding to the maximum in cp/T3, the so-called boson peak, was observed at about 17 K for the undoped sample and at lower temperatures for the doped glasses. In conclusion, our results showed the ability of the time resolved thermal lens to determine the thermo-optical properties of glasses at temperatures lower than 300 K, bringing new possibilities for experiments in a wide range of optical materials. © 2007 Elsevier B.V. All rights reserved.3542-9574579Touloukian, L.R., Powel, R.W., Ho, Y.C., Nicalasu, M.C., (1973) Thermal Diffusivity, , Plenum, New YorkBaesso, M.L., Shen, J., Snock, R.D., (1994) J. Appl. Phys., 75, p. 3732Payne, S.A., Wilke, G.D., Smith, L.K., Krupke, W.F., (1994) Opt. Commun., 111, p. 263Payne, S.A., Marshall, C.D., Bayramian, A., Wilke, G.D., Hayden, J.S., (1995) Appl. Phys. B, 61, p. 257Lima, S.M., Catunda, T., Lebullenger, R., Hernandes, A.C., Baesso, M.L., Bento, A.C., Miranda, L.C.M., (1999) Phys. Rev. B, 60, p. 15173Astrath, N.G.C., Rohling, J.H., Medina, A.N., Bento, A.C., Baesso, M.L., Jacinto, C., Catunda, T., Anjos, V., (2005) Phys. Rev. B, 71, p. 214202Hao, H.Y., Neumann, M., Enss, C., Fleischmann, A., (2004) Rev. Sci. Instrum., 75, p. 2718Shen, J., Lowe, R.D., Snook, R.D., (1992) Chem. Phys., 165, p. 385Shen, J., Baesso, M.L., Snock, R.D., (1994) J. Appl. Phys., 75, p. 3738Rohling, J.H., Pereira, J.R.D., Medina, A.N., Bento, A.C., Baesso, M.L., Sampaio, J.A., Lima, S.M., Miranda, L.C.M., (2003) Rev. Sci. Instrum., 74, p. 291Rohling, J.H., Caldeira, A.M.F., Pereira, J.R.D., Medina, A.N., Bento, A.C., Baesso, M.L., Miranda, L.C.M., Rubira, A.F., (2001) J. Appl. Phys., 89, p. 2220Pereira, J.R.D., Palangana, A.J., Mansanares, A.M., da Silva, E.C., Bento, A.C., Baesso, M.L., (2000) Phys. Rev. E, 61, p. 5410Baesso, M.L., Bento, A.C., Andrade, A.A., Sampaio, J.A., Pecoraro, E., Nunes, L.A.O., Catunda, T., Gama, S., (1998) Phys. Rev. B, 57, p. 10545Bialkowski, S.E., (1996) Photothermal Spectroscopy Methods for Chemical Analysis, , John Wiley, New YorkCaird, J.A., Ramponi, A.J., Staver, P.R., (1991) J. Opt. Soc. Am. B, 8, p. 1391Waxler, R.M., Cleek, G.W., (1973) J. Res. Natl. Bur. Stand.-A Phys. Chem., 77 A, p. 755Medina, A.N., Caldeira, A.M.F., Bento, A.C., Baesso, M.L., Sampaio, J.A., Catunda, T., Gandra, F.G., (2002) J. Non-Cryst. Solids, 304, p. 299Astrath, N.G.C., Steimacher, A., Medina, A.N., Rohling, J.H., Pereira, J.R.D., Bento, A.C., Baesso, M.L., Gandra, F.G., (2006) J. Non-Cryst. Solids, 352, p. 3572Yu, C.C., Freeman, J.J., (1987) Phys. Rev. B, 36, p. 7620Lubchenko, V., Wolynes, P.G., (2003) Proc. Natl. Acad. Sci. USA, 100, p. 1515Sokolov, A.P., Calemczuk, R., Salce, B., Kisliuk, A., Quitmann, D., Duval, E., (1997) Phys. Rev. Lett., 78, p. 2405Pohl, R.O., (2006) J. Non-Cryst. Solids, 352, p. 3363Zeller, R.C., Pohl, R.O., (1971) Phys. Rev. B, 4, p. 2029Masciovecchio, C., Ruocco, G., Sette, F., Krisch, M., Verbeni, R., Bergmann, U., Soltwisch, M., (1996) Phys. Rev. Lett., 76, p. 3356Steimacher, A., Medina, A.N., Bento, A.C., Rohling, J.H., Baesso, M.L., Reynoso, V.C.S., Lima, S.M., Hewak, D.W., (2004) J. Non-Cryst. Solids, 348, p. 240Pecoraro, E., Sampaio, J.A., Nunes, L.A.O., Gama, S., Baesso, M.L., (2000) J. Non-Cryst. Solids, 277, p. 7
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
Maternal insulin therapy increases fetal endothelial progenitor cells during diabetic pregnancy
No full textMaternal Insulin Therapy Increases Fetal Endothelial Progenitor Cells During Diabetic Pregnancy
Gian Paolo Fadini, MD1, Ilenia Baesso, BSC1, Carlo Agostini, MD1, Emily Cuccato, OBST2, Giovanni Battista Nardelli, MD2, Annunziata Lapolla, MD3 and Angelo Avogaro, MD PHD1
tes Care. 2008 Apr;31(4):808-10. Epub 2007 Dec 27.
Endothelial progenitor cells (EPCs) are bone marrow–derived cells involved in endothelial homeostasis and angiogenesis. Reduction and dysfunction of EPCs have been associated with the development of atherosclerosis and diabetic complications .
Recent studies in human pregnancies suggest that a mother's EPCs are involved in the physiologic vascular remodeling of systemic and utero-placental circulation . Hyperglycemia induces dysfunction and apoptosis of EPCs ; this may impair the development or maturation of the utero-placental circulation, causing maladaptive responses during diabetic pregnancies. Indeed, EPCs have been shown to be dysregulated in pregnant women with diabetes .
Little is known about the effects of maternal factors on fetal EPCs. One study showed reduced cord blood EPCs in severe preeclampsia , but there were no data on diabetes. This study was undertaken to evaluate quantitative alterations of cord blood progenitor cells during diabetic pregnancie
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
Study of high-pT charged particle suppression in PbPb compared to pp collisions at sqrt(sNN)=2.76 TeV.
No full textThe transverse momentum spectra of charged particles have been measured in pp and PbPb collisions at sqrt(sNN) = 2.76 TeV by the CMS experiment at the LHC. In the transverse momentum range pt = 5-10 GeV/c, the charged particle yield in the most central PbPb collisions is suppressed by up to a factor of 5 compared to the pp yield scaled by the number of incoherent nucleon-nucleon collisions. At higher pt, this suppression is significantly reduced, approaching roughly a factor of 2 for particles with pt in the range pt=40-100 GeV/c
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
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