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showing 10 items of 15562 documents
Behind the scenes of artificial intelligence: a study of micro-work platforms in France
2019
Este artículo es una versión resumida del informe “Le Micro-travail en France. Derrière l’automatisation de nouvelles précarités au travail?» This article is a summarized version of the report "Le Micro-travail en France. Derrière l’automatisation de nouvelles précarités au travail?" .; International audience; Micro-work internet services allocate small, standardized tasks of data generation and annotation to crowds of providers. The outputs are mainly used to produce artificial intelligence solutions. It is an exemplary instance of the “platformization” of the economy, and of the transformations of labour that digital technologies bring about. To uncover the conditions under which micro-wo…
Chemical Cartography with APOGEE: Multi-element Abundance Ratios
2019
We map the trends of elemental abundance ratios across the Galactic disk, spanning R = 3-15 kpc and midplane distance |Z|= 0-2 kpc, for 15 elements in a sample of 20,485 stars measured by the SDSS/APOGEE survey (O, Na, Mg, Al, Si, P, S, K, Ca, V, Cr, Mn, Fe, Co, Ni). Adopting Mg rather than Fe as our reference element, and separating stars into two populations based on [Fe/Mg], we find that the median trends of [X/Mg] vs. [Mg/H] in each population are nearly independent of location in the Galaxy. The full multi-element cartography can be summarized by combining these nearly universal median sequences with our measured metallicity distribution functions and the relative proportions of the lo…
The Gaia-ESO Survey: impact of extra mixing on C and N abundances of giant stars
2018
The GES survey using FLAMES at the VLT has obtained high-resolution UVES spectra for a large number of giant stars, allowing a determination of the abundances of the key chemical elements C and N at their surface. The surface abundances of these chemical species are well-known to change in stars during their evolution on the red giant branch after the first dredge-up episod, as a result of extra-mixing phenomena. We investigate the effects of thermohaline mixing on C and N abundances using the first comparison between the GES [C/N] determinations with simulations of the observed fields using a model of stellar population synthesis. We explore the effects of thermohaline mixing on the chemic…
Geriatric Care Resources in an Aging Society of Rual and Urban Areas in Poland – Mapping of Current Situation
2017
Prognozy demograficzne GUS pokazują, że do 2035 r. subpopulacja ludzi mających 65 lat i więcej w Polsce wzrośnie o 62% w porównaniu do 2010 r., natomiast subpopulacja ludzi mających 80 lat i więcej wzrośnie w tym samym okresie aż o 96%. Celem artykułu jest diagnoza wybranych zasobów opieki geriatrycznej w sytuacji postępującego starzenia się społeczeństwa wsi i miast w Polsce. Aby zrealizować cel, przedstawiono prognozy demograficzne dla Polski do 2035 roku z podziałem na poszczególne województwa oraz wieś i miasto, jak również dokonano analizy wybranych zasobów opieki geriatrycznej (łóżek geriatrycznych oraz lekarzy geriatrów) w kontekście starzejącego się społeczeństwa. Uzyskane wyniki ba…
Effetti “beyond-cholesterol” delle statine: la terapia con simvastatina riduce le lipoproteine aterogene in pazienti con coronaropatia prematura
2002
Effects “beyond-cholesterol” of statins: simvastatin reduces the levels of atherogenic lipoproteins in patients with premature coronary artery disease
2002
Measuring galaxy segregation with the mark connection function
2010
(abridged) The clustering properties of galaxies belonging to different luminosity ranges or having different morphological types are different. These characteristics or `marks' permit to understand the galaxy catalogs that carry all this information as realizations of marked point processes. Many attempts have been presented to quantify the dependence of the clustering of galaxies on their inner properties. The present paper summarizes methods on spatial marked statistics used in cosmology to disentangle luminosity, colour or morphological segregation and introduces a new one in this context, the mark connection function. The methods used here are the partial correlation functions, includi…
Valutazione del potenziale anticancro del frutto di Mangifera indica proveniente dalle aree rurali siciliane
2022
Il fitochimico indicaxantina previene stress ossidativo, arresto del ciclo cellulare ed apoptosi indotta da 7-Ketocolesterolo in monociti-macrofagi u…
2012
PHYTOCHEMICAL INDICAXANTHIN PREVENTS 7-ketoCHOLESTEROL-INDUCED OXIDATIVE STRESS, CELL CYCLE ARREST AND APOPTOSIS IN HUMAN MONOCYTES- MACROPHAGES.
Maladaptive stress coping: An additional psychological factor in the process of chronification of pain or pruritus
2021
Background: Inflammatory skin diseases with chronic pruritus and chronic back pain are very common symptoms in the general population and are associated with a reduced quality of life (QOL). In addition to biological factors, psychosocial reasons are also considered to be responsible for their development. So far, it is not known whether chronic pruritus and chronic back pain are related to maladaptive stress coping. Patients and methods: In our matched pilot case-control study with a total of 259 analyzed subjects, we compared outpatient groups, one suffering from chronic skin diseases with pruritus, the other with chronic back pain, to a healthy control group in terms of their stress copi…