323,302 research outputs found
Pansharpening Techniques: Optimizing the Loss Function for Convolutional Neural Networks
No full textPansharpening is a traditional image fusion problem where the reference image (or ground truth) is not accessible. Machine-learning-based algorithms designed for this task require an extensive optimization phase of network parameters, which must be performed using unsupervised learning techniques. The learning phase can either rely on a companion problem where ground truth is available, such as by reproducing the task at a lower scale or using a pretext task, or it can use a reference-free cost function. This study focuses on the latter approach, where performance depends not only on the accuracy of the quality measure but also on the mathematical properties of these measures, which may introduce challenges related to computational complexity and optimization. The evaluation of the most recognized no-reference image quality measures led to the proposal of a novel criterion, the Regression-based QNR (RQNR), which has not been previously used. To mitigate computational challenges, an approximate version of the relevant indices was employed, simplifying the optimization of the cost functions. The effectiveness of the proposed cost functions was validated through the reduced-resolution assessment protocol applied to a public dataset (PairMax) containing images of diverse regions of the Earth’s surface
Optical Disk Archive of Line-by-Line IUE images
No full textWith the intent to provide a testbed fo the Hubble Space Telescope Archive, the Space Telescope European Coordinating Facility started in October 1987, a project to put the data corresponding to the images of the low resolution spectra of the IUE in an optical disk archive, where
they could be easily accessed by the astronomers who need them. Optical disk storage was selected, and conversion of
data from the NASA-SPEC formatto the FITS-like optical disk format started. We explain in -this paper the criteria fo!lowed, the formats and procedure used, and the way we pian to allow data access and retrieval
Determination of oil content in whole corn (Zea mays L.) seeds by means of near infrared reflectance spectroscopy
No full textAbstract not available.A.S. Fassio, E.A. Restaino, D. Cozzolin
Motherhoods: Feminist Solidarity and Fear Rhetoric
No full textAs we work to understand and achieve feminist solidarity, we must explore the complex and political experience of motherhood. The language of popular media narrowly defines the experience of motherhood as one that is rooted in fear, perfectionism, and helplessness. This limiting and narrow rhetoric undermines feminist solidarity, pushing the diverse experiences of mothers outside of its scope. As feminists, we must celebrate multiple approaches to motherhood(s) that reject limited ideas about the roles and experiences of women-as-mothers
Le ville romane presso Paranzano, S. Maria in Legarano e S. Pietro in Asciano nel territorio di Casperia
No full textIl volume presenta i risultati di un progetto volto allo studio del sistema insediativo per villas che caratterizza il paesaggio della Sabina tiberina dalla fine della repubblica alla prima età imperiale, studiandone l’evoluzione fino all’età tardoantica attraverso l’esame della documentazione archeologica, bibliografica e d’archivio relativa agli edifici di cui si conservano i maggiori resti monumentali nel territorio gravitante intorno al municipium di Forum Novum, individuato nell’area presso la Chiesa di S. Maria in Vescovio a Torri in Sabina. Localizzate e georeferenziate con sistema GIS, le strutture sono state fatte oggetto di nuovi rilievi fotogrammetrici e, in alcuni contesti, sono state svolte anche indagini geofisiche. Lo studio dei casi presi in esame, tra cui si distingue il sito della villa romana di Cottanello, oggetto di indagini da parte del CNR già dal 2013, si avvale di un approccio multidisciplinare con il coinvolgimento di numerosi ricercatori, tecnologi e tecnici del CNR-ISPC e di collaboratori di altre Istituzioni italiane e straniere, con l’obiettivo di offrire un contributo per la storia del territorio in esame nel corso dell’epoca roman
Le ville romane presso S. Adamo, S. Vito e del Tulliano nel territorio di Cantalupo in Sabina
No full textIl volume presenta i risultati di un progetto volto allo studio del sistema insediativo per villas che caratterizza il paesaggio della Sabina tiberina dalla fine della repubblica alla prima età imperiale, studiandone l’evoluzione fino all’età tardoantica attraverso l’esame della documentazione archeologica, bibliografica e d’archivio relativa agli edifici di cui si conservano i maggiori resti monumentali nel territorio gravitante intorno al municipium di Forum Novum, individuato nell’area presso la Chiesa di S. Maria in Vescovio a Torri in Sabina. Localizzate e georeferenziate con sistema GIS, le strutture sono state fatte oggetto di nuovi rilievi fotogrammetrici e, in alcuni contesti, sono state svolte anche indagini geofisiche. Lo studio dei casi presi in esame, tra cui si distingue il sito della villa romana di Cottanello, oggetto di indagini da parte del CNR già dal 2013, si avvale di un approccio multidisciplinare con il coinvolgimento di numerosi ricercatori, tecnologi e tecnici del CNR-ISPC e di collaboratori di altre Istituzioni italiane e straniere, con l’obiettivo di offrire un contributo per la storia del territorio in esame nel corso dell’epoca roman
Risk of Essure microinsert abdominal migration: case report and review of literature
No full textGiuseppe Ricci,1,2 Stefano Restaino,2 Giovanni Di Lorenzo,1 Francesco Fanfani,1 Federica Scrimin,1 Francesco P Mangino1 1Institute for Maternal and Child Health, IRCCS “Burlo Garofolo”, Trieste, Italy; 2Department of Medical Sciences, University of Trieste, Trieste, Italy Purpose: To report a case of Essure microinsert abdominal migration and literature review.Methods: A 41-year-old woman was counseled to undergo Essure sterilization. The procedure was hampered by the presence of endometrial cavity adhesions, obscuring left tubal ostium. By using microscissors the adhesions were progressively lysed. Since the procedure had become very painful, the patient required general anesthesia. Once adhesion lysis was completed, the tubal ostium was well visible. Both devices were then easily introduced into the fallopian tubes. At the end of the procedure, five coils were visible on the right side and five coils on the left side, as recommended.Results: The 3-month hysterosalpingogram follow-up suspected abdominal migration of the left device. Laparoscopy confirmed the device displacement in the left lower abdominal quadrant. Both fallopian tubes and the uterus appeared normal. No signs of perforation were detected. The device was embedded into the omentum, but it was easily removed. Bilateral tubal sterilization was performed by bipolar coagulation.Conclusion: There are only 13 cases, including the present, of Essure abdominal migration in the literature. In most cases, abdominal displacement of the microinsert is asymptomatic and does not induce tissue damage. However, in some cases, it may cause a severe adverse event, requiring major surgery. Therefore, removal of the migrated device should be performed as soon as possible. Moreover, during presterilization counseling, the patient should also be correctly informed about the risk of this rare but relevant complication, as well as about the surgical interventions that could be required to solve it. Keywords: abdominal migration, Essure, hysteroscopic sterilization, hysteroscopy, tubal sterilizatio
Urban Development and Tourism in the Mediterranean region: opportunities and strategies of European Planning
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