„Recommendation“ for the further procedure for open access monitoring. Deliverable of the AT2OA subproject TP1-B

As part of the Austrian Transition to Open Access (AT2OA) project, subproject TP1-B is working on designing a monitoring solution for the output of Open Access publications in Austria. This report on a potential Open Access monitoring approach in Austria is one of the results of these efforts and can serve as a basis for discussion on an international level.Als Teil des Hochschulraumstrukturmittel-Projekts Austrian Transition to Open Access (AT2OA) befasst sich das Teilprojekt TP1-B mit der Konzeption einer Monitoring-Lösung für den Open Access-Publikationsoutput in Österreich. Der nun vorliegende Bericht zu einem potentiellen Open Access-Monitoring in Österreich ist eines der Ergebnisse dieser Bemühungen und kann als Grundlage einer Diskussion auf internationaler Ebene dienen

"Recommendation" for the further procedure for open access monitoring. Deliverable of the AT2OA subproject TP1-B

Als Teil des Hochschulraumstrukturmittel-Projekts Austrian Transition to Open Access (AT2OA) befasst sich das Teilprojekt TP1-B mit der Konzeption einer Monitoring-Lösung für den Open Access-Publikationsoutput in Österreich. Der nun vorliegende Bericht zu einem potentiellen Open Access-Monitoring in Österreich ist eines der Ergebnisse dieser Bemühungen und kann als Grundlage einer Diskussion auf internationaler Ebene dienen.As part of the Austrian Transition to Open Access (AT2OA) project, subproject TP1-B is working on designing a monitoring solution for the output of Open Access publications in Austria. This report on a potential Open Access monitoring approach in Austria is one of the results of these efforts and can serve as a basis for discussion on an international level

Vitrectomie des hémorragies intravitréennes compliquant une rétinopathie diabétique proliférante (évaluation comparative des résultats chirurgicaux avec et sans injection de Lucentis® en préopératoire)

But : comparer les resultats chirurgicaux de la vitrectomie des hemorragies intravitreennes du diabetique realises avec et sans ranibizumab en preoperatoire. Methode: etude comparative prospective realise sur 24 patients au chu d amiens. 12 sujets ont recu du ranibizumab avnat la chirurgie. Sont etudies les resultats sur la duree interventionnelle, les recidives hemorragiques per et postoperatoire, l acuite visuelle, l epaisseur foveolaire et l impact sur le tonus oculaire. Resultats : le groupe avec ranibizumab semble presente moins de recidives hemorragiques per et postoperatoire ainsi qu une duree operatoire ecourte sans difference significative, le suivi a 12 mois ne retrouve pas de difference concernant l acuite visuelle finale, mais une difference significative sur la resorption de l oedeme maculaire. Aucun n effet indesirable imputable au ranibizumab n a ete retrouve. Conclusion : ces resultats encourageant laisse entrevoir une option therapeutique interressante dans le traitement des hemorragies intravitreenne du diabetique mais ne peut etre indique de maniere systematique. Il est plus prudent d attendre la confirmation de cette constatation par une autre etude randomisee de plus grand effectif.Aims: to compare surgical results of vitrectomy for the vitreous hemorrhage in diabetic retinopathy with and without ranibizumab preoperatively. Method: prospective comparative analys from 24 patients operated in the ophtalmogic department of amiens hospital. 12 subjects received ranibizumab before the surgery. Are studied the results on intra-opeartive time, the recurrence of the hemorrhage, vision and retinal foveal thicness as well as the impact on intraocular tonus. Resultats: the group operated with ranibizumab seems to present less recurrence of hemorrhage both intra-operative and post-operative and shorten operative time without this difference being significant, with a 12 months follow up there are not significant decrease about the visual acuity but the group with ranibizumab seems to present a better answer on the resorption the macular oedema. No ascribable adverse effect with the ranibizumab was found. Conclusion: these finfings are promotive in the treatment of diabetic intravitreal hemorrhage but can t be used in a systemic manner. Anyway it s wiser to wait for funther confirmation about these findings by doing more studies of the randomised type.AMIENS-BU Santé (800212102) / SudocSudocFranceF

A 3D tomographic reconstruction method to analyze Jupiter's electron-belt emission observations

International audienceMulti-dimensional reconstruction techniques of Jupiter's synchrotron radiation from radio-interferometric observations were first developed by Sault et al. [Astron. Astrophys., 324, 1190-1196, 1997]. The tomographic-like technique introduced 20 years ago had permitted the first 3-dimensional mapping of the brightness distribution around the planet. This technique has demonstrated the advantage to be weakly dependent on planetary field models. It also does not require any knowledge on the energy and spatial distributions of the radiating electrons. On the downside, it is assumed that the volume emissivity of any punctual point source around the planet is isotropic. This assumption becomes incorrect when mapping the brightness distribution for non-equatorial point sources or any point sources from Juno's perspective. In this paper, we present our modeling effort to bypass the isotropy issue. Our approach is to use radio-interferometric observations and determine the 3-D brightness distribution in a cylindrical coordinate system. For each set (z, r), we constrain the longitudinal distribution with a Fourier series and the anisotropy is addressed with a simple periodic function when possible. We develop this new method over a wide range of frequencies using past VLA and LOFAR observations of Jupiter. We plan to test this reconstruction method with observations of Jupiter that are currently being carried out with LOFAR and GMRT in support to the Juno mission. We describe how this new 3D tomographic reconstruction method provides new model constraints on the energy and spatial distributions of Jupiter's ultra-relativistic electrons close to the planet and be used to interpret Juno MWR observations of Jupiter's electron-belt emission and assist in evaluating the background noise from the radiation environment in the atmospheric measurements

A 3D tomographic reconstruction method to analyze Jupiter's electron-belt emission observations

International audienceMulti-dimensional reconstruction techniques of Jupiter's synchrotron radiation from radio-interferometric observations were first developed by Sault et al. [Astron. Astrophys., 324, 1190-1196, 1997]. The tomographic-like technique introduced 20 years ago had permitted the first 3-dimensional mapping of the brightness distribution around the planet. This technique has demonstrated the advantage to be weakly dependent on planetary field models. It also does not require any knowledge on the energy and spatial distributions of the radiating electrons. On the downside, it is assumed that the volume emissivity of any punctual point source around the planet is isotropic. This assumption becomes incorrect when mapping the brightness distribution for non-equatorial point sources or any point sources from Juno's perspective. In this paper, we present our modeling effort to bypass the isotropy issue. Our approach is to use radio-interferometric observations and determine the 3-D brightness distribution in a cylindrical coordinate system. For each set (z, r), we constrain the longitudinal distribution with a Fourier series and the anisotropy is addressed with a simple periodic function when possible. We develop this new method over a wide range of frequencies using past VLA and LOFAR observations of Jupiter. We plan to test this reconstruction method with observations of Jupiter that are currently being carried out with LOFAR and GMRT in support to the Juno mission. We describe how this new 3D tomographic reconstruction method provides new model constraints on the energy and spatial distributions of Jupiter's ultra-relativistic electrons close to the planet and be used to interpret Juno MWR observations of Jupiter's electron-belt emission and assist in evaluating the background noise from the radiation environment in the atmospheric measurements

A 3D tomographic reconstruction method to analyze Jupiter's electron-belt emission observations

International audienceMulti-dimensional reconstruction techniques of Jupiter's synchrotron radiation from radio-interferometric observations were first developed by Sault et al. [Astron. Astrophys., 324, 1190-1196, 1997]. The tomographic-like technique introduced 20 years ago had permitted the first 3-dimensional mapping of the brightness distribution around the planet. This technique has demonstrated the advantage to be weakly dependent on planetary field models. It also does not require any knowledge on the energy and spatial distributions of the radiating electrons. On the downside, it is assumed that the volume emissivity of any punctual point source around the planet is isotropic. This assumption becomes incorrect when mapping the brightness distribution for non-equatorial point sources or any point sources from Juno's perspective. In this paper, we present our modeling effort to bypass the isotropy issue. Our approach is to use radio-interferometric observations and determine the 3-D brightness distribution in a cylindrical coordinate system. For each set (z, r), we constrain the longitudinal distribution with a Fourier series and the anisotropy is addressed with a simple periodic function when possible. We develop this new method over a wide range of frequencies using past VLA and LOFAR observations of Jupiter. We plan to test this reconstruction method with observations of Jupiter that are currently being carried out with LOFAR and GMRT in support to the Juno mission. We describe how this new 3D tomographic reconstruction method provides new model constraints on the energy and spatial distributions of Jupiter's ultra-relativistic electrons close to the planet and be used to interpret Juno MWR observations of Jupiter's electron-belt emission and assist in evaluating the background noise from the radiation environment in the atmospheric measurements

The Breakthrough Listen Search for Extraterrestrial Intelligence

The discovery of the ubiquity of habitable extrasolar planets, combined with revolutionary advances in instrumentation and observational capabilities, have ushered in a renaissance in the millenia-old quest to answer our most profound question about the Universe and our place within it - Are we alone? The Breakthrough Listen Initiative, announced in July 2015 as a 10-year 100M USD program, is the most comprehensive effort in history to quantify the distribution of advanced, technologically capable life in the universe. In this white paper, we outline the status of the on-going observing campaign with our primary observing facilities, as well as planned activities with these instruments over the next few years. We also list collaborative facilities which will conduct searches for technosignatures in either primary observing mode, or commensally. We highlight some of the novel analysis techniques we are bringing to bear on multi-petabyte data sets, including machine learning tools we are deploying to search for a broader range of technosignatures than was previously possible

A search for long-timescale, low-frequency radio transients

This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. © 2017 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.We present a search for transient and highly variable sources at low radio frequencies (150-200 MHz) that explores long timescales of 1-3 years. We conducted this search by comparing the TIFR GMRT Sky Survey Alternative Data Release 1 (TGSS ADR1) and the GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey catalogues. To account for the different completeness thresholds in the individual surveys, we searched for compact GLEAM sources above a flux density limit of 100 mJy that were not present in the TGSS ADR1; and also for compact TGSS ADR1 sources above a flux density limit of 200 mJy that had no counterpart in GLEAM. From a total sample of 234 333 GLEAM sources and 275 612 TGSS ADR1 sources in the overlap region between the two surveys, there were 99658 GLEAM sources and 38 978 TGSS ADR sources that passed our flux density cutoff and compactness criteria. Analysis of these sources resulted in three candidate transient sources. Further analysis ruled out two candidates as imaging artefacts. We analyse the third candidate and show it is likely to be real, with a flux density of 182 +/- 26 mJy at 147.5 MHz. This gives a transient surface density of rho = (6.2 +/- 6) x 10-5 deg-2 . We present initial follow-up observations and discuss possible causes for this candidate. The small number of spurious sources from this search demonstrates the high reliability of these two new low-frequency radio catalogues.Peer reviewe