| 1. |
- Aad, G, et al.
(författare)
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- 2015
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swepub:Mat__t
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| 2. |
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| 3. |
- Marras, A., et al.
(författare)
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Percival P2M-FSI detector : First test at a Synchrotron Ring beamline with tender x-ray photons
- 2019
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Ingår i: 2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019. - : IEEE. - 9781728141640
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Konferensbidrag (refereegranskat)abstract
- In this paper, we are presenting the results of the first test of the Percival P2M-FSI detector with tender x-rays photons at a synchrotron beamline. Percival is a monolithic CMOS Imager for detection of x-rays in Synchrotron Rings and Free Electron Lasers: the Front-Side-Illuminated (FSI) version of the detector has been proven able to successfully distinguish tender (2keV) x-ray single photons.
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| 4. |
- Sedgwick, I., et al.
(författare)
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P2M : First Optical Characterisation Results of a 2MPixel CMOS Image Sensor for Soft X-Ray Detection
- 2019
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Ingår i: 2019 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC). - : IEEE. - 9781728141640
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Konferensbidrag (refereegranskat)abstract
- High brilliance synchrotrons and FELs require high performing detector systems to realise their full potential. High dynamic range, low noise and high frame rate are all of great importance. In this paper we present first optical characterization results of the P2M CMOS sensor, designed for soft X-ray detection at such facilities. Previous work is summarised and an overview of the sensor is presented. Test results for the sensor's column-parallel ADC and readout chain are presented, and first test results for the pixel acquired using the Photon Transfer Curve (PTC) method are shown. Finally, an outline of future work is provided.
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| 5. |
- Dargaville, PA, et al.
(författare)
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Incidence and Outcome of CPAP Failure in Preterm Infants
- 2016
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Ingår i: Pediatrics. - : American Academy of Pediatrics (AAP). - 1098-4275 .- 0031-4005. ; 138:1
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Tidskriftsartikel (refereegranskat)abstract
- Data from clinical trials support the use of continuous positive airway pressure (CPAP) for initial respiratory management in preterm infants, but there is concern regarding the potential failure of CPAP support. We aimed to examine the incidence and explore the outcomes of CPAP failure in Australian and New Zealand Neonatal Network data from 2007 to 2013.METHODS:Data from inborn preterm infants managed on CPAP from the outset were analyzed in 2 gestational age ranges (25–28 and 29–32 completed weeks). Outcomes after CPAP failure (need for intubation <72 hours) were compared with those succeeding on CPAP using adjusted odds ratios (AORs).RESULTS:Within the cohort of 19 103 infants, 11 684 were initially managed on CPAP. Failure of CPAP occurred in 863 (43%) of 1989 infants commencing on CPAP at 25–28 weeks’ gestation and 2061 (21%) of 9695 at 29–32 weeks. CPAP failure was associated with a substantially higher rate of pneumothorax, and a heightened risk of death, bronchopulmonary dysplasia (BPD) and other morbidities compared with those managed successfully on CPAP. The incidence of death or BPD was also increased: (25–28 weeks: 39% vs 20%, AOR 2.30, 99% confidence interval 1.71–3.10; 29–32 weeks: 12% vs 3.1%, AOR 3.62 [2.76–4.74]). The CPAP failure group had longer durations of respiratory support and hospitalization.CONCLUSIONS:CPAP failure in preterm infants is associated with increased risk of mortality and major morbidities, including BPD. Strategies to promote successful CPAP application should be pursued vigorously.
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| 7. |
- Orsini, F, et al.
(författare)
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Graph Invariant Kernels
- 2015
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Ingår i: Proceedings of the Twenty-Fourth International Joint Conference on Artificial Intelligence. - Palo Alto : AAAI Press. - 9781577357384 ; , s. 3756-3762
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Konferensbidrag (refereegranskat)abstract
- We introduce a novel kernel that upgrades the Weisfeiler-Lehman and other graph kernels to effectively exploit high-dimensional and continuous vertex attributes. Graphs are first decomposed into subgraphs. Vertices of the subgraphs are then compared by a kernel that combines the similarity of their labels and the similarity of their structural role, using a suitable vertex invariant. By changing this invariant we obtain a family of graph kernels which includes generalizations of Weisfeiler-Lehman, NSPDK, and propagation kernels. We demonstrate empirically that these kernels obtain state-of-the-art results on relational data sets.
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| 8. |
- Plainaki, C., et al.
(författare)
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Towards a Global Unified Model of Europa’s Tenuous Atmosphere
- 2018
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Ingår i: Space Science Reviews. - : Springer Netherlands. - 0038-6308 .- 1572-9672. ; 214:1
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Forskningsöversikt (refereegranskat)abstract
- Despite the numerous modeling efforts of the past, our knowledge on the radiation-induced physical and chemical processes in Europa’s tenuous atmosphere and on the exchange of material between the moon’s surface and Jupiter’s magnetosphere remains limited. In lack of an adequate number of in situ observations, the existence of a wide variety of models based on different scenarios and considerations has resulted in a fragmentary understanding of the interactions of the magnetospheric ion population with both the moon’s icy surface and neutral gas envelope. Models show large discrepancy in the source and loss rates of the different constituents as well as in the determination of the spatial distribution of the atmosphere and its variation with time. The existence of several models based on very different approaches highlights the need of a detailed comparison among them with the final goal of developing a unified model of Europa’s tenuous atmosphere. The availability to the science community of such a model could be of particular interest in view of the planning of the future mission observations (e.g., ESA’s JUpiter ICy moons Explorer (JUICE) mission, and NASA’s Europa Clipper mission). We review the existing models of Europa’s tenuous atmosphere and discuss each of their derived characteristics of the neutral environment. We also discuss discrepancies among different models and the assumptions of the plasma environment in the vicinity of Europa. A summary of the existing observations of both the neutral and the plasma environments at Europa is also presented. The characteristics of a global unified model of the tenuous atmosphere are, then, discussed. Finally, we identify needed future experimental work in laboratories and propose some suitable observation strategies for upcoming missions.
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