showing 36 of ~574560 from 574555 documents
Author response: Single-cell analysis of the ventricular-subventricular zone reveals signatures of dorsal and ventral adult neurogenesis
2021
Les élections professionnelles, autre visage de la société abstentionniste
2021
International audience; Les élections départementales et régionales de 2021 ont été marquées par une abstention massive que les commentateurs ont expliquée par l’absence d’enjeux clairs, les inégalités sociales ou le désintérêt des jeunes, la crise sanitaire... En revanche, on a généralement ignoré l’anomie – soit le déclin des formes de régulation et des valeurs collectives – qui frappe la société française. Les élections professionnelles en apportent une illustration. Le même phénomène abstentionniste s’y manifestait déjà avant la crise sanitaire. Une analyse détaillée en est proposée dans "Anatomie du syndicalisme" (PUG). Différents éléments sont repris dans cet article, soulignant la mo…
Cosmopolitans and communitarians: A typology of football fans between national and European influences
2021
International audience; The past 25 years have seen an unprecedented Europeanisation of the structures and governance in football across the continent. A European (and global) transfer market for players and managers has become the norm and a pan-European league system has been established that regularly exposes supporters to transnational competitions and players from all over Europe. At the same time, manifold typologies of football fans have been established, distinguishing groups of fans based on, for example, fan intensity, fan behaviour or their attitudes towards different actors in the field. The attitudes towards Europe and the self-identification of these fans within Europeanised f…
Proposta di un framework per la progettazione didattica a scuola
2021
Il presente lavoro di ricerca ha inteso verificare la validità di una struttura predefinita per la stesura di un progetto didattico, precisamente quella fornita agli studenti durante il tirocinio. La progettazione è un fattore chiave nella mediazione tra insegnamento e apprendimento a scuola; le sue fasi investono sia il piano gestionale sia quello delle finalità generali, fino a quello dell’agire in classe e della valutazione. Nel tirocinio 684 futuri insegnanti di scuola dell’infanzia e primaria, frequentanti il corso di laurea in Scienze della Formazione Primaria di Palermo negli anni 2016-2020, hanno utilizzato un frame di progettazione e valutazione didattica; esso è stato costruito te…
Restoration of Abundance and Dynamics of Coastal Fish and Lobster Within Northern Marine Protected Areas Across Two Decades
2021
This article reviews a suite of studies conducted in a network of coastal Marine Protected Areas (MPAs) in Skagerrak, Southeast Norway. In 2006, Norway’s first lobster reserves were implemented, with the aim of protecting European lobster (Homarus gammarus) through a ban on fixed gear. A before–after control-impact paired series (BACIPS) monitoring program was initiated to evaluate effects of protection on depleted lobster populations. Experimental trapping and capture-recapture techniques were combined to track demography of populations, also including movement of individuals within and beyond MPAs and adjacent control areas. Further, population genetics and parentage studies were applied,…
Diagnostic Performance of Muscle Echo Intensity and Fractal Dimension for the Detection of Frailty Phenotype
2021
To determine the relationship between muscle echo intensity (EI) and fractal dimension (FD), and the diagnostic performance of both ultrasound parameters for the identification of frailty phenotype. A retrospective interpretation of ultrasound scans from a previous cohort (November 2014–February 2015) was performed. The sample included healthy participants <60 years old, and participants ≥60 divided into robust, pre-frail, and frail groups according to Fried frailty criteria. A region of interest of the rectus femoris from the ultrasound scan was segmented, and histogram function was applied to obtain EI. For fractal analysis, images were processed using two-dimensional box-counting techniq…
Phase retrieval for studying the structure of vitreous floaters simulated in a model eye
2021
We simulate vitreous floaters in a model eye and apply a phase retrieval algorithm to recover the structure of the vitreous floaters. The algorithm requires modulating the object under study by a r...
New Coronavirus (SARS-CoV-2) Crossing Borders Beyond Cities, Nations, and Continents: Impact of International Travel
2021
The third outbreak of coronavirus in the form of the COVID-19 infection started in Wuhan, China, in December 2019. The early and rapid spread of this infection across borders can be largely attributed to international air travel that has become a part of modern globalization. In this article, we analyze the spread of the novel coronavirus (SARS-CoV-2) along the routes of international travel, both by air and by sea. Pitfalls of various screening methods used at the airports and the importance of optimal aircraft ventilation are discussed. Also, we suggest measures that can be taken to reduce the risk of transmission associated with air travel.
La Carta Social Europea como tratado europeo de los derechos sociales por excelencia y su mayor relevancia en el contexto de la pandemia de Covid-19
2021
El presente trabajo aborda la relevancia del tratado más emblemático de derechos sociales (la Carta Social Europea) en el marco de la actual crisis del coronavirus. En este sentido, el epígrafe primero critica los agravios iniciales que se plasmaron en la Carta originaria de 1961, los cuales continúan sorprendentemente invocándose desde posiciones reticentes para evitar la evolución y consolidación del sistema de la Carta. El segundo epígrafe se centra en la Carta Social como «Constitución Social de Europa» a través de la efectividad de su propio sistema garantista y su autoafirmación, tanto en el seno del Consejo de Europa (particularmente, en su relación con el Convenio Europeo de Derecho…
Selective photocatalytic oxidation of 3-pyridinemethanol on platinized acid/base modified TiO2
2021
TiO2 catalysts, modified with acidic or alkaline solutions and then platinized, were used for the partial photocatalytic oxidation of 3-pyridinemethanol to 3-pyridinemethanal and vitamin B-3 under environmentally friendly conditions. The reaction took place in water under UVA light and air oxygen. Catalysts were characterized by TEM, photoluminescence, DRIFT-IR, Raman, DRS, XPS, and photocurrent measurements. The photocatalytic activity results show that Pt loading of untreated samples leads to a significant activity improvement (hence product yield) as much as acid and alkaline treatments do. Moreover, the alkaline treated TiO2 samples exhibit a further increase in activity after loading w…
Burrows Wheeler Transform on a Large Scale: Algorithms Implemented in Apache Spark
2021
With the rapid growth of Next Generation Sequencing (NGS) technologies, large amounts of "omics" data are daily collected and need to be processed. Indexing and compressing large sequences datasets are some of the most important tasks in this context. Here we propose algorithms for the computation of Burrows Wheeler transform relying on Big Data technologies, i.e., Apache Spark and Hadoop. Our algorithms are the first ones that distribute the index computation and not only the input dataset, allowing to fully benefit of the available cloud resources.
Future Projection of precipitation changes in the Júcar and Segura River Basins (Iberian Peninsula) by CMIP5 GCMs Local Downscaling
2021
The basins of the Júcar and Segura rivers, on the Mediterranean coast of the Iberian Peninsula, present a special water problem and are of particular interest regarding climate change. These basins are very vulnerable to a possible scenario of decreasing water resources. Recent studies on historic rainfall since 1955 have indicated an ongoing loss of precipitation in their headwaters, especially in the case of the Júcar river. The aim of the present study is to perform climate projections for the precipitation variable for several future periods (2021–2040, 2051–2070, 2081–2100) and emission scenarios (RCPs 4.5, 8.5) within the Júcar and Segura River Basin authorities. For this purpose, a s…
Optimisation d’un modèle atmosphérique transnational de prédiction de la concentration journalière d’ozone : intégration de paramètres météorologique…
2021
International audience; L'ozone (O3) est un polluant atmosphérique secondaire formé lors de réactions photochimiques, en présence de précurseurs (NOx, COV, CO). L'exposition à l'O3 est délicate à modéliser car ce polluant présente une forte variabilité spatiotemporelle. Le but des présents travaux est d'optimiser l'évaluation des concentrations journalières d'O3 modélisées à échelle kilométrique, à l'aide de modèles MARS et de données météorologiques. La plateforme de modélisation PREVEST a généré une prédiction de concentrations maximales journalières d'O3 pour un maillage de 3km de côté. La station de mesure de la qualité de l'air du réseau ATMO-Bourgogne-Franche-Comté, Besançon-Prévoyanc…
Gada auga 2021 pļavas ķimenes Carum carvi herbārijs
2021
Rakstā dots ieskats pļavas jeb parastās kimeņu Carum carvi herbāriju LU Muzeja Botānikas un mikoloģijas kolekcijās Herbarium Latvicum (RIG II) un Herbarium Balticum (RIG I). Latvijas Botāniķu biedrība pļavas ķimeni izvēlējās par 2021. Gada augu. LU Muzejs to izvēlējās par jūlija Mēneša priekšmetu.
Nitric oxide production and signalling in algae
2021
International audience
Improving estimation of distribution genetic programming with novelty initialization
2021
Estimation of distribution genetic programming (EDA-GP) replaces the standard variation operations of genetic programming (GP) by learning and sampling from a probabilistic model. Unfortunately, many EDA-GP approaches suffer from a rapidly decreasing population diversity which often leads to premature convergence. However, novelty search, an approach that searches for novel solutions to cover sparse areas of the search space, can be used for generating diverse initial populations. In this work, we propose novelty initialization and test this new method on a generalization of the royal tree problem and compare its performance to ramped half-and-half (RHH) using a recent EDA-GP approach. We f…
‘I Got To Answer the Way I Wanted To’: Intellectual Disabilities and Participation in Technology Design Activities
2021
User involvement in technology design processes can have positive implications for the designed service, but less is known about how such participation affects people with intellectual disabilities. We explored how 13 individuals with intellectual disabilities experienced participation in the design of a transport support application. The study is based on qualitative interviews, photovoice interviews, participant observations, and Smileyometer ratings. A thematic analysis generated the following themes: a sense of pride and ownership, an experience of socialization, and a sense of empowerment. The findings suggest that participation in design activities is a primarily positive experience t…
The Zero Violence Brave Club: A Successful Intervention to Prevent and Address Bullying in Schools
2021
Bullying among peers in schools is a growing problem affecting children and adolescents from an early age worldwide. The consequences of bullying victimization in the emotional development of children and youth and their academic achievement are adverse for them and the rest of the school community, with its negative impact extending into the mid and long run. The Zero Violence Brave Club is implemented in schools in the framework of the Dialogic Model of Violence Prevention, a successful educational action according to the INCLUD-ED project [Strategies for inclusion and social cohesion in Europe from Education] (6th Framework Program of Research of the European Commission). The Zero Violen…
Model-free modelling of nonlinear pulse shaping in optical fibres
2021
International audience; Machine learning is transforming the scientific landscape, with the use of advanced algorithmic tools in data analysis yielding new insights into many areas of fundamental and applied science. Photonics is no exception, and machine-learning methods have been applied in a variety of ways to optimise and analyse the output of optical fibre systems. In parallel with these developments, pulse shaping based on nonlinear propagation effects in optical fibres has developed into a remarkable tool to tailor the spectral and temporal content of light signals, leading to the generation of a large variety of optical waveforms. Yet, due to the typically large number of degrees of fre…
A performative paradigm for post-qualitative inquiry
2021
In this article, the authors explore and contribute to producing a performative research paradigm where post-qualitative as well as artistic research might dwell and breathe. Entering a thread of discussion that started with Haseman’s A manifesto for performative research in 2006, and building on their own friction-led research processes at the edges of qualitative research, the authors plug in with performativity, non-representational theories and methodologies, post-qualitative inquiry and post approaches. A performative paradigm for post-qualitative inquiry is proposed, where knowledge is viewed as knowledge-in-becoming as the constant creation of difference through researcher entanglem…
Robust Lanthanoid Picolinate-Based Coordination Polymers for Luminescence and Sensing Applications
2021
Picolinate-based segmented dianionic ligands L12– (5-((4-carboxyphenyl)ethynyl)picolinate) and L22– (5,5′-(ethyne-1,2-diyl)dipicolinate) have been used in the synthesis of the highly robust and luminescent europium(III) coordination polymers [(CH3)2NH2][Eu(H2O)2(L1)2] (1) and [(CH3)2NH2][Eu(L2)2]·H2O·CH3COOH (2). Both 1 and 2 exhibit high selectivity for detection of nitroaromatic compounds since they act as quenchers of the Eu3+ emission. Stern–Volmer plots, using nitrobenzene as a quencher, yielded values of KSV = 150 M–1 and 160 M–1 for 1 and 2, respectively. Luminescence studies in the presence of different metal ions indicate a high selectivity for Fe3+ detection, with KSV values of 47…
On sampling error in evolutionary algorithms
2021
The initial population in evolutionary algorithms (EAs) should form a representative sample of all possible solutions (the search space). While large populations accurately approximate the distribution of possible solutions, small populations tend to incorporate a sampling error. A low sampling error at initialization is necessary (but not sufficient) for a reliable search since a low sampling error reduces the overall random variations in a random sample. For this reason, we have recently presented a model to determine a minimum initial population size so that the sampling error is lower than a threshold, given a confidence level. Our model allows practitioners of, for example, genetic pro…
Standard vs random dictator games: On the effects of role uncertainty and framing on generosity
2021
This project was conducted while Ernesto Mesa-Vázquez was visiting Universidad Loyola Andalucia. He wants to particularly thank Pablo Brañas-Garza and Diego Jorrat for continued guidance and assessment with the experimental design. Álvaro Núñez-Bermúdez and the faculty members of the Economics and Business Sciences department at the University of Seville were very helpful in providing assistance for running the experiment. The paper has benefited from comments and suggestions provided by Maria Paz Espinosa, Giuseppe Attanassi, José Enrique Vila, Iván Arribas, Marco Faillo, Cristina Borra and participants at the Loyola Behavioral Lab and the Early Career Researchers in Experimental Economics…
Using knowledge of human-generated code to bias the search in program synthesis with grammatical evolution
2021
Recent studies show that program synthesis with GE produces code that has different structure compared to human-generated code, e.g., loops and conditions are hardly used. In this article, we extract knowledge from human-generated code to guide evolutionary search. We use a large code-corpus that was mined from the open software repository service GitHub and measure software metrics and properties describing the code-base. We use this knowledge to guide the search by incorporating a new selection scheme. Our new selection scheme favors programs that are structurally similar to the programs in the GitHub code-base. We find noticeable evidence that software metrics can help in guiding evoluti…
Professionnaliser le concours : les savoirs en jeu dans le recrutement des conseillers principaux d’éducation (CPE)
2021
International audience
Artifacts and Errors in Cross-Spectrum Phase Noise Measurements : Invited lecture
2021
Inserting an attenuator between the oscillator under test and the phase noise analyzer, one expects that the white phase noise increases monotonically with the attenuation. By contrast, we observe that with some oscillators the white noise has sharp minimum for a given value of the attenuation, which clearly indicates problem. With other oscillators, it increases monotonically with the attenuation, but the values are not consistent with the thermal energy introduced by the attenuator. In both cases artifacts are present, which takes the form of a sharp notch in the spectrum, occurring where the white FM noise crosses the white PM noise. Such anomalous behavior is the tip of the iceberg, and…
Una herramienta para el empoderamiento rural. Intervención en políticas públicas desde la perspectiva de “La ciudad educadora”.
2021
La herramienta que se presenta es la «Ciudad Educadora», una forma de entender la dinámica los asentamientos poblacionales. Es conveniente desarrollar políticas públicas en los contextos rurales desde esta perspectiva porque parten de un concepto de educación transversal y de ciudadanía activa que pueden ser una forma de empoderamiento de los contextos. Y esto es posible gracias a la Ciudad Educadora, porque comprende que estos están llenos de posibilidades y herramientas educativas si se dirigen a ello.
Cathodic Corrosion of Metal Electrodes—How to Prevent It in Electroorganic Synthesis
2021
The critical aspects of the corrosion of metal electrodes in cathodic reductions are covered. We discuss the involved mechanisms including alloying with alkali metals, cathodic etching in aqueous and aprotic media, and formation of metal hydrides and organometallics. Successful approaches that have been implemented to suppress cathodic corrosion are reviewed. We present several examples from electroorganic synthesis where the clever use of alloys instead of soft neat heavy metals and the application of protective cationic additives have allowed to successfully exploit these materials as cathodes. Because of the high overpotential for the hydrogen evolution reaction, such cathodes can contri…
Auto-setting breather mode-locked fibre laser
2021
International audience
Boundedness of composition operators in holomorphic Hölder type spaces
2021
Determination of phosphorus compounds in plant tissues: from colourimetry to advanced instrumental analytical chemistry
2021
AbstractAlthough the spectrum of effective methods and techniques that allow determination of inorganic or total phosphorus is impressive, more precise analysis of these substances in plant tissues is not a routine or trivial task. The complexity of chemical composition of plant tissues treated as the analytical matrices is thought to be the main cause why there is no one answer, how appropriate phosphorus compounds may be determined qualitatively and quantitatively. Even if more advanced spectrophotometric measurements and classical variants of absorption (FAAS) or emission (ICP-AES/ ICP-OES) spectrometry techniques are used, it is necessary at first to isolate various forms of phosphorus …
A new styracosternan hadrosauroid (Dinosauria: Ornithischia) from the Early Cretaceous of Portell, Spain
2021
A new styracosternan ornithopod genus and species is described based on the right dentary of a single specimen from the Mirambell Formation (Early Cretaceous, early Barremian) at the locality of Portell, (Castellón, Spain).Portellsaurus sosbaynatigen. et sp. nov. is diagnosed by two autapomorphic features as well as a unique combination of characters. The autapomorphies include: the absence of a bulge along the ventral margin directly ventral to the base of the coronoid process and the presence of a deep oval cavity on the medial surface of the mandibular adductor fossa below the eleventh-twelfth tooth position. Phylogenetic analyses reveal that the new Iberian form is more closely related …
Use of the Barthel Index to Assess Activities of Daily Living before and after SARS-COVID 19 Infection of Institutionalized Nursing Home Patients
2021
The objective of the present study was to evaluate the activities of daily living (ADLs) using the Barthel Index before and after infection with the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and also to determine whether or not the results varied according to gender. The ADLs of 68 cohabiting geriatric patients, 34 men and 34 women, in two nursing homes were measured before and after SARS-CoV-2 (Coronavirus 2019 (COVID-19)) infection. COVID-19 infection was found to affect the performance of ADLs in institutionalized elderly in nursing homes, especially in the more elderly subjects, regardless of sex. The COVID-19 pandemic, in addition to having claimed many victims, espe…
Online prevention programmes for university students: stakeholder perspectives from six European countries
2021
Abstract Background Students beginning university are at a heightened risk for developing mental health disorders. Online prevention and early intervention programmes targeting mental health have the potential to reduce this risk, however, previous research has shown uptake to be rather poor. Understanding university stakeholders’ (e.g. governing level and delivery staff [DS] and students) views and attitudes towards such online prevention programmes could help with their development, implementation and dissemination within university settings. Methods Semi-structured interviews, focus groups and online surveys were completed with staff at a governing level, university students and DS (i.e.…
Alternative tuition fees schemes: a simulation exercise
2021
In this paper we use a theoretical model of effort optimization on the part of university students to simulate the effects of different tuition fees schemes. For each of such schemes, we present an...
Non‐bacterial thrombotic endocarditis in a patient with pancreatic carcinoma
2021
Nonbacterial thrombotic endocarditis (NBTE) is a rare condition that most often accompanies a malignant disease and involves a hypercoagulable state. We report the incidental finding of a rare case of an NBTE affecting the tricuspid valve in a patient with metastatic pancreatic carcinoma complicated by severe venous and arterial thromboembolisms.