Search and Discovery Tools for Astronomical On-line Resources and Services

A growing number of astronomical resources and data or information services are made available through the Internet. However valuable information is frequently hidden in a deluge of non-pertinent or non up-to-date documents. At a first level, compilations of astronomical resources provide help for selecting relevant sites. Combining yellow-page services and meta-databases of active pointers may be an efficient solution to the data retrieval problem. Responses generated by submission of queries to a set of heterogeneous resources are difficult to merge or cross-match, because different data providers generally use different data formats: new endeavors are under way to tackle this problem. We review the technical challenges involved in trying to provide general search and discovery tools, and to integrate them through upper level interfaces.Comment: 7 pages, 2 Postscript figures; to be published in A&A

Interoperability tools for the Virtual Observatory

Interoperability is one of the key issues in the current efforts to build the Virtual Observatory. We present here some of the tools which already contribute to the efficient exchange of information between archives, databases, and journals.Comment: To appear in Proc. SPIE Conf. vol. 4477, Astronomical Data Analysis, San Diego, August 200

The ALADIN Interactive Sky Atlas

The Aladin interactive sky atlas, developed at CDS, is a service providing simultaneous access to digitized images of the sky, astronomical catalogues, and databases. The driving motivation is to facilitate direct, visual comparison of observational data at any wavelength with images of the optical sky, and with reference catalogues. The set of available sky images consists of the STScI Digitized Sky Surveys, completed with high resolution images of crowded regions scanned at the MAMA facility in Paris. A Java WWW interface to the system is available at: http://aladin.u-strasbg.fr/Comment: 8 pages, 3 Postscript figures; to be published in A&

The SIMBAD astronomical database

Simbad is the reference database for identification and bibliography of astronomical objects. It contains identifications, `basic data', bibliography, and selected observational measurements for several million astronomical objects. Simbad is developed and maintained by CDS, Strasbourg. Building the database contents is achieved with the help of several contributing institutes. Scanning the bibliography is the result of the collaboration of CDS with bibliographers in Observatoire de Paris (DASGAL), Institut d'Astrophysique de Paris, and Observatoire de Bordeaux. When selecting catalogues and tables for inclusion, priority is given to optimal multi-wavelength coverage of the database, and to support of research developments linked to large projects. In parallel, the systematic scanning of the bibliography reflects the diversity and general trends of astronomical research. A WWW interface to Simbad is available at: http://simbad.u-strasbg.fr/SimbadComment: 14 pages, 5 Postscript figures; to be published in A&A

Dynamics of pH-dependent self-association and membrane binding of a dicarboxylic porphyrin: a study with small unilamellar vesicles

AbstractSteady-state and stopped-flow measurements of the absorbance and fluorescence of aqueous solutions were performed to characterize the pH-dependent ionization and aggregation states of deuteroporphyrin. Porphyrin self-association promoted by neutralization of the carboxylic groups takes place within a few milliseconds impeding characterization of the monomer ionization states. Extrapolation at infinite dilution of the values obtained from steady-state measurements yielded the pKs of the carboxylic groups (6.6, 5.3) and inner nitrogens (4.1, 2.3). The kinetics of interactions of the porphyrin with unilamellar fluid state dioleoylphosphatidylcholine vesicles was examined in a large pH range, with focus on the entry step. From alkaline pH to a value of 6.5, the entrance rate is maximal (1.69×106 M−1 s−1 versus phospholipid concentration). It decreases to 2.07×105 M−1 s−1 at lower pH with an apparent pK of 5.39. This effect appears to be related to the formation of porphyrin dimer rather than to the protonation of inner nitrogen. In keeping with previous data, these results support the concept of a pH-mediated selectivity of carboxylic porphyrins for tumor. They also indicate that the propensity of these molecules to self-associate at low pH could yield to some retention in acidic intracellular vesicles of the endosome/lysosome compartment

Identify scientific publications country-wide and measure their open access: the case of the French Open Science Barometer (BSO)

International audienceWe use several sources to collect and evaluate academic scientific publication on a country scale, and we apply it to the case of France for the years 2015-2020, while presenting a more detailed analysis focused on the reference year 2019. These sources are diverse: databases available by subscription (Scopus, Web of Science) or open to the scientific community (Microsoft Academic Graph), the national open archive HAL, and databases serving thematic communities (ADS and PUBMED). We show the contribution of the different sources to the final corpus. These results are then compared to those obtained with another approach, that of the French Open Science Barometer (Jeangirard, 2019) for monitoring open access at the national level. We show that both approaches provide a convergent estimate of the open access rate. We also present and discuss the definitions of the concepts used, and list the main difficulties encountered in processing the data. The results of this study contribute to a better understanding of the respective contributions of the main databases and their complementarity in the broad framework of a country-wide corpus. They also shed light on the calculation of open access rates and thus contribute to a better understanding of current developments in the field of open science

Gestion de grands catalogues et application de relevés infrarouges à l'étude de la structure galactique

STRASBOURG-Sc. et Techniques (674822102) / SudocSudocFranceF

Promoting narrative CVs to improve research evaluation? A review of opinion pieces and experiments

International audienceAs the academic community has become increasingly concerned about the drifts of research evaluation, mostly researchers' evaluation, because of the overreliance on metrics, many expert groups have made recommendations to improve the way researchers should be evaluated. In this study, we focus on the recommendation to use narrative CVs. We review 28 opinion pieces and 7 experiments to better understand what a narrative CV can refer to, and to explore whether the narrative function that is specific to this kind of CV is proving effective in response to the concerns raised by evaluation practices. A close reading of these documents reveals the conceptual basis of the narrative CV and the problems it is intended to solve; we propose 5 commonly reported features of the narrative CV: avoid lists, contextualise achievements, fight metrics, enlarge the spectrum of contributions taken into consideration and foster diversity and inclusion. But the promoters of the narrative CV pay little to investigate how the narrative feature itself can lead to any benefits. However, the feedback collected from both applicants and evaluators is quite positive. Regardless of whether it is justified or not, the enthusiasm aroused by the implementation of this new type of CV undeniably has the advantage of opening up the debate, raising awareness and calling to question the bad practices and biases that exist in the researchers' assessment processes. The narrative nature of the CV is, in the end, just a pretext for raising interest and working towards the adoption of good practices