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Institution

University of Zagreb

EducationZagreb, Grad Zagreb, Croatia
About: University of Zagreb is a education organization based out in Zagreb, Grad Zagreb, Croatia. It is known for research contribution in the topics: Population & European union. The organization has 21769 authors who have published 50267 publications receiving 783239 citations. The organization is also known as: Zagreb University & Sveučilište u Zagrebu.


Papers
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Proceedings Article
11 Nov 2013
TL;DR: A new database for a copy-move forgery detection (CMFD) that consist of 260 forged image sets, which includes forged image, two masks and original image is developed.
Abstract: Due to the availability of many sophisticated image processing tools, a digital image forgery is nowadays very often used. One of the common forgery method is a copy-move forgery, where part of an image is copied to another location in the same image with the aim of hiding or adding some image content. Numerous algorithms have been proposed for a copy-move forgery detection (CMFD), but there exist only few benchmarking databases for algorithms evaluation. We developed new database for a CMFD that consist of 260 forged image sets. Every image set includes forged image, two masks and original image. Images are grouped in 5 categories according to applied manipulation: translation, rotation, scaling, combination and distortion. Also, postprocessing methods, such as JPEG compression, blurring, noise adding, color reduction etc., are applied at all forged and original images. In this paper we present database organization and content, creation of forged images, postprocessing methods, and database testing. CoMoFoD database is available at http://www.vcl.fer.hr/comofod.

225 citations

Journal ArticleDOI
TL;DR: It is argued that large plasmonic losses can, contrary to intuition, be helpful in enhancing the overall near-field transfer and have the potential to complement conventional TE and TPV solid state heat-to-electricity conversion devices.
Abstract: Near-field thermophotovoltaic (TPV) systems with carefully tailored emitter-PV properties show large promise for a new temperature range (600 – 1200K) solid state energy conversion, where conventional thermoelectric (TE) devices cannot operate due to high temperatures and far-field TPV schemes suffer from low efficiency and power density. We present a detailed theoretical study of several different implementations of thermal emitters using plasmonic materials and graphene. We find that optimal improvements over the black body limit are achieved for low bandgap semiconductors and properly matched plasmonic frequencies. For a pure plasmonic emitter, theoretically predicted generated power density of 14 W/cm2 and efficiency of 36% can be achieved at 600K (hot-side), for 0.17eV bandgap (InSb). Developing insightful approximations, we argue that large plasmonic losses can, contrary to intuition, be helpful in enhancing the overall near-field transfer. We discuss and quantify the properties of an optimal near-field photovoltaic (PV) diode. In addition, we study plasmons in graphene and show that doping can be used to tune the plasmonic dispersion relation to match the PV cell bangap. In case of graphene, theoretically predicted generated power density of 6(120) W/cm2 and efficiency of 35(40)% can be achieved at 600(1200)K, for 0.17eV bandgap. With the ability to operate in intermediate temperature range, as well as high efficiency and power density, near-field TPV systems have the potential to complement conventional TE and TPV solid state heat-to-electricity conversion devices.

224 citations

Journal ArticleDOI
Joseph Adams1, Madan M. Aggarwal2, Zubayer Ahammed3, J. Amonett4  +380 moreInstitutions (45)
TL;DR: In this article, the transverse momentum spectra for identified charged pions, protons and anti-protons from p + p and d + Au collisions at s NN = 200 GeV were measured around midrapidity ( | y | 0.5 ) over the range of 0.3 p T 10 GeV / c with particle identification from the ionization energy loss and its relativistic rise in the time projection chamber and time-of-flight in STAR.

224 citations

Journal ArticleDOI
Carlos Guerrero1, A. Tsinganis2, A. Tsinganis1, E. Berthoumieux3, E. Berthoumieux1, Mario Barbagallo4, Fabio Belloni3, F. Gunsing3, C. Weiß1, C. Weiß5, E. Chiaveri1, E. Chiaveri3, Marco Calviani1, V. Vlachoudis1, S. Altstadt6, S. Andriamonje1, J. Andrzejewski, L. Audouin7, V. Bécares, F. Bečvář8, J. Billowes9, V. Boccone1, Damir Bosnar10, M. Brugger1, F. Calviño11, D. Cano-Ott, C. Carrapiço12, F. Cerutti1, M. P. W. Chin1, Nicola Colonna4, G. Cortes11, M. A. Cortés-Giraldo13, M. Diakaki2, C. Domingo-Pardo14, I. Duran15, Rugard Dressler16, N. Dzysiuk4, C. Eleftheriadis17, Alfredo Ferrari1, K. Fraval3, Srinivasan Ganesan18, A. R. García, G. Giubrone14, Kathrin Göbel6, M. B. Gómez-Hornillos11, I. Goncalves12, E. Gonzalez-Romero, E. Griesmayer5, P. Gurusamy18, A. Hernández-Prieto1, A. Hernández-Prieto11, D. G. Jenkins19, E. Jericha5, Yacine Kadi1, F. Käppeler20, D. Karadimos2, N. Kivel16, P. E. Koehler21, M. Kokkoris2, M. Krtička8, Jeri Kroll8, C. Lampoudis3, C. Langer6, E. Leal-Cidoncha15, C. Lederer6, H. Leeb5, L.S. Leong7, Roberto Losito1, A. Manousos17, J. Marganiec, T. Martinez, Cristian Massimi22, P. F. Mastinu4, M. Mastromarco4, M. Meaze4, E. Mendoza, Alberto Mengoni23, P. M. Milazzo4, F. Mingrone22, M. Mirea, W. Mondalaers, T. Papaevangelou3, C. Paradela15, A. Pavlik24, J. Perkowski, A. J. M. Plompen, Javier Praena13, J. M. Quesada13, Thomas Rauscher25, Rene Reifarth6, A. Riego11, F. Roman1, Carlo Rubbia1, M. Sabaté-Gilarte13, R. Sarmento12, A. K. Saxena18, Peter Schillebeeckx, Stefan Schmidt6, Dorothea Schumann16, Patrick Steinegger16, G. Tagliente4, J. L. Tain14, D. Tarrío15, Laurent Tassan-Got7, S. Valenta8, G. Vannini22, V. Variale4, P. Vaz12, Alberto Ventura23, R. Versaci1, M. J. Vermeulen19, R. Vlastou2, Anton Wallner24, T. Ware9, Mario Weigand6, T. J. Wright9, Petar Žugec10 
TL;DR: In this paper, the authors present the characteristics of the new neutron beam in the currently available configurations, which correspond to two different collimation systems and two choices of neutron moderator, including the intensity and energy dependence of the neutron flux, the spatial profile of the beam, the in-beam background components and the energy resolution/broadening.
Abstract: The neutron time-of-flight facility n_TOF features a white neutron source produced by spallation through 20GeV/c protons impinging on a lead target. The facility, aiming primarily at the measurement of neutron-induced reaction cross sections, was operating at CERN between 2001 and 2004, and then underwent a major upgrade in 2008. This paper presents in detail all the characteristics of the new neutron beam in the currently available configurations, which correspond to two different collimation systems and two choices of neutron moderator. The characteristics discussed include the intensity and energy dependence of the neutron flux, the spatial profile of the beam, the in-beam background components and the energy resolution/broadening. The discussion of these features is based on dedicated measurements and Monte Carlo simulations, and includes estimations of the systematic uncertainties of the mentioned quantities.

224 citations

Journal ArticleDOI
TL;DR: In this article, a choline-chloride-based NADES with malic acid as the hydrogen bond donor was selected as the most promising, which provided more effective extraction of wine lees anthocyanins compared to a conventional solvent.

224 citations


Authors

Showing all 22096 results

NameH-indexPapersCitations
Harry Campbell150897115457
Joseph R. Ecker14838194860
Igor Rudan142658103659
Nikola Godinovic1381469100018
Ivica Puljak134143697548
Damir Lelas133135493354
Željko Ivezić12934484365
Piotr Ponikowski120762131682
Marin Soljacic11776451444
Ivan Dikic10735952088
Ozren Polasek10243652674
Mordechai Segev9972940073
Srdan Verstovsek96104538936
Segev BenZvi9548232127
Mirko Planinic9446731957
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023119
2022525
20213,277
20203,360
20193,176
20183,042