showing 36 of ~574560 from 574555 documents
Reflexions on Mahler: Dessins, Modularity and Gauge Theories
2021
We provide a unified framework of Mahler measure, dessins d'enfants, and gauge theory. With certain physically motivated Newton polynomials from reflexive polygons, the Mahler measure and the dessin are in one-to-one correspondence. From the Mahler measure, one can construct a Hauptmodul for a congruence subgroup of the modular group, which contains the subgroup associated to the dessin. In brane tilings and quiver gauge theories, the modular Mahler flow gives a natural resolution of the inequivalence amongst the three different complex structures $\tau_{R,G,B}$. We also study how, in F-theory, 7-branes and their monodromies arise in the context of dessins. Moreover, we give a dictionary on…
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2021
Onnea 100-vuotiaalle politologialle!
2021
Pääkirjoitus 63:4.
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2021
Abstract. Sustainable aviation fuels can reduce contrail ice numbers and radiative forcing by contrail cirrus. We measured apparent ice emission indices for fuels with varying aromatic content at altitude ranges of 9.1–9.8 and 11.4–11.6 km. Measurement data were collected during the ECLIF II/NDMAX flight experiment in January 2018. The fuels varied in both aromatic quantity and type. Between a sustainable aviation fuel blend and a reference fuel Jet A-1, a maximum reduction in apparent ice emission indices of 40 % was found. We show vertical ice number and extinction distributions for three different fuels and calculate representative contrail optical depths. Optical depths of contrails (0.…
Views from the Inside: Roles of Deputy Directors in Early Childhood Education in Finland
2021
This study explored the perceptions of deputy directors about their leadership in Early Childhood Education (ECE) centres in Finland. Our aim was to look beyond task distribution and understand how deputy directors enacted leadership with their colleagues. Six deputy directors employed in one municipality in Finland participated in this study. Interviewed individually, the participants discussed how they themselves perceived being in a leadership position and what their leadership looked like in practice. The emphasis they placed on the various relationships highlight the importance of paying attention to the relational dynamics amongst staff within a centre, taking into account both formal…
Reading Skills, Social Competence, and Physiological Stress in the First Grade
2021
AbstractAn awareness of school-related antecedents of children’s physiological stress at the beginning of school helps educators to prevent and mitigate children’s stress, the one of the major obstacles to their well-being and academic progress. We aimed to study the effect of reading skills and social competence on first-grade students’ salivary cortisol levels in natural settings. Based on previous results of the effects of everyday situations on children’s stress according to gender, we expected that both academic and social skills would affect girls’ physiological stress more, compared to boys. Our sample consisted of 277 students (7–8 years old, 50.2% girls). We used the highest saliva…
Drug development for neurodegenerative diseases
2021
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2021
In recent decades, an essential global aim of the reforms of special education has been the promotion of inclusive education. This article discusses the implementation of reforms with a focus on tiered support systems in the context of Finnish comprehensive school education. Based on earlier literature, legislation, and administrative documents, we provide a background for Finnish education policy and special education reforms. The focus of this article is on the description of parallel reforms targeting the re-structuring of the systems around support for students and funding of education in the 2010s. We discuss the processes leading to these reforms and the reforms themselves. In additio…
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2021
Abstract Background Standard therapy for localised, resectable high risk soft tissue sarcomas consists of wide excision and radiotherapy over several weeks. This treatment schedule is hardly feasible in geriatric and frail patients. In order not to withhold radiotherapy from these patients, hypofractionated radiotherapy with 25 Gy in 5 fractions was evaluated in a geriatric patient population. Patients and methods A retrospective analysis was performed of 18 geriatric patients with resectable high risk soft tissue sarcomas of extremities and thoracic wall. Wound healing and short term oncologic outcome were analysed. In addition, dose constraints for radiotherapy of the extremities were tra…
Enhanced Sieving of C2‐Hydrocarbon from Methane by Fluoro‐Functionalization of In‐MOF with Robust Stability
2021
Developing efficient adsorbent materials is crucial for adsorption and separation to realize the purification of energy source and raw chemicals. Here, we report a novel and robust 3D In-based MOF built up with fluorine-functionalized ligands, QMOF-2F, with improved separation properties of C2-light hydrocarbons over methane at room temperature respect isoreticular non-fluorinated MOF. QMOF-2F shows a remarkable chemical stability in different solvents, including water, and pH (2-12). DFT calculations support the key role of fluorine-functionalization on the improved performance of QMOF-2F.
Analytical Modeling of the Maximum Power Point with Series Resistance
2021
This paper presents new analytical expressions for the maximum power point voltage, current, and power that have an explicit dependence on the series resistance. An explicit expression that relates the series resistance to well-known solar cell parameters was also derived. The range of the validity of the model, as well as the mathematical assumptions taken to derive it are explained and discussed. To test the accuracy of the derived model, a numerical single-diode model with solar cell parameters whose values can be found in the latest installment of the solar cell efficiency tables was used. The accuracy of the derived model was found to increase with increasing bandgap and to decrease wi…
Humility: Virgin or Virtue?
2021
Este trabajo considera la iconografía mariana en la que se representa a la Virgen sentada en el suelo, conocida como la Virgen de la Humildad. La creación de este tipo mariano coincide con la sistematización de las virtudes de Santo Tomás, que dio lugar a una disminución en la importancia de la virtud de la humildad. La combinación de ambas tradiciones culturales ha llevado a una correspondencia entre la virtud de la Humildad y las imágenes de la Virgen de la Humildad. La génesis de este último tipo se basa en las fuentes textuales y parte de la representación visual de la Humildad, que fue sustituida durante los siglos XIV y XV. GV/2021/123 This paper considers Marian iconography in which …
L'esthétisation du légume.
2021
International audience; Plus que tout autre aliment, le légume se prête à une rencontre esthétique par une diversité des formes, des couleurs et des textures. Cela ne suffit pas toujours à le faire aimer. Par ses vertus esthétiques, est-il capable de nous toucher plus intensément ? Jusqu’où étendre la dimension esthétique : à l’œil, à la langue, au cœur, à l’âme ?
Redistribution of tax resources: a cooperative game theory approach
2021
AbstractWe consider the problem of how to distribute public expenditure among the different regions of an economic entity after all taxes have been collected. Typical examples are: the regions that make up a country, the states of a federal country, or the countries of a confederation of countries. We model the problem as a cooperative game in coalitional form, called the tax game. This game estimates the fiscal resources collected in each region, or coalition of regions, by differentiating between what comes from economic activity within each region and what comes from trade with the other regions. This methodology provides a measure of the disagreement within a region, or coalitions of re…
Las ruinas de Belchite: de símbolo de la 'barbarie roja' a monumento por la paz
2021
La Batalla de Belchite (Zaragoza) fue una de las más cruentas de la Guerra Civil Española. En 1939 se ordenó la conservación de las ruinas provocadas por la guerra, que fueron significadas como un símbolo de la "barbarie roja"en contraposición a un nuevo pueblo levantado como reflejo de un nuevo orden. En 1964 se abandonó definitivamente el pueblo viejo comenzó un proceso de degradación y expolio de sus ruinas acompañado de un nuevo discurso generado por los XXV años de paz que trataba de alejar la mirada a los dramas de la guerra y la postguerra. La llegada de la democracia acaba con la dictadura miltar y posibilita la revisión del relato histórico y una nueva recepción y resignificación …
Criminal networks analysis in missing data scenarios through graph distances
2021
Data collected in criminal investigations may suffer from issues like: (i) incompleteness, due to the covert nature of criminal organizations; (ii) incorrectness, caused by either unintentional data collection errors or intentional deception by criminals; (iii) inconsistency, when the same information is collected into law enforcement databases multiple times, or in different formats. In this paper we analyze nine real criminal networks of different nature (i.e., Mafia networks, criminal street gangs and terrorist organizations) in order to quantify the impact of incomplete data, and to determine which network type is most affected by it. The networks are firstly pruned using two specific m…
Herbal Mixtures: Aspects Related to the Quality of Chinese Medicine Formulas and Perspectives for Products Registration in Brazil
2021
Traditional medicine products are easily found in different regions of the world. Given this scenario, the World Health Organization (WHO) is very interested in the rational insertion of these resources, especially in primary pharmaceutical care in emerging countries. One of the main concerns of the WHO is with the population's access to traditional medicine products without quality guaranteed by regulatory and health control agencies in the country of origin. In ancient Chinese Pharmacology and Medicine, products based on associated drugs, used by boiling in water (decoction), successfully contribute to maintaining the health of Chinese people. In Brazil, the sanitary legislation of herbal…
Vegetation Types Mapping Using Multi-Temporal Landsat Images in the Google Earth Engine Platform
2021
Vegetation Types (VTs) are important managerial units, and their identification serves as essential tools for the conservation of land covers. Despite a long history of Earth observation applications to assess and monitor land covers, the quantitative detection of sparse VTs remains problematic, especially in arid and semiarid areas. This research aimed to identify appropriate multi-temporal datasets to improve the accuracy of VTs classification in a heterogeneous landscape in Central Zagros, Iran. To do so, first the Normalized Difference Vegetation Index (NDVI) temporal profile of each VT was identified in the study area for the period of 2018, 2019, and 2020. This data revealed strong se…
ANDREA GIACOBBE, UN SELVICOLTORE CHE MERITA DI USCIRE DALL'OBLIO
2021
Andrea Giacobbe, a forester who deserves to get out from oblivion. The scientific production of Andrea Giacobbe, a Sicilian forester who worked in central and northern Italy in the last century, has been revisited. The aim is to highlights how his contribution to botany, forest ecology and forestry has been largely overlooked. He was the protagonist of a lively debate with the greatest for est scientists of his time, he produced 64 papers and books, but above all he proposed many inno vative reforestation techniques that today should be rediscovered and applied.
Graphic proposal for the great hall of the Palace of the Counts of Oliva
2021
[EN] The now-demolished Palace of the Counts of Oliva, in the province of Valencia (Spain), was an outstanding example of late Gothic and early Renaissance architecture and art. Its great hall was particularly impressive, with rich, complex decoration that constituted a cultural milestone linked recently to the ‘Germanías’, or Brotherhoods. Through research conducted in image and document collections, a graphic reproduction of the room has been produced, with special emphasis on its frieze. The procedures and techniques used in this process are examined here, before a final contemplation of the possible uses for these results.
Precise Measurement of the D0 and D+ Lifetimes at Belle II
2021
We report a measurement of the D^{0} and D^{+} lifetimes using D^{0}→K^{-}π^{+} and D^{+}→K^{-}π^{+}π^{+} decays reconstructed in e^{+}e^{-}→cc[over ¯] data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy e^{+}e^{-} collider. The data, collected at center-of-mass energies at or near the ϒ(4S) resonance, correspond to an integrated luminosity of 72 fb^{-1}. The results, τ(D^{0})=410.5±1.1(stat)±0.8(syst) fs and τ(D^{+})=1030.4±4.7(stat)±3.1(syst) fs, are the most precise to date and are consistent with previous determinations.
Empathes: A general code for nudged elastic band transition states search
2021
An easy and flexible interface, Empathes (Extensible Minimum PATH EStimator), that allows to perform Nudged Elastic Band calculation for the determination of transition states is presented. The code is designed to be easily modified, in order to be associated with the user's preferred calculation software, even with those which implement composite approaches. In particular, the interfaces to Gaussian and Siesta programs are discussed in details, being the former only used for testing purpose, while the latter can be productively employed for transition states search with that commonly used density functional theory software for periodic calculations. THIS DATASET IS ARCHIVED AT DANS/EA…
Resummation of Super-Leading Logarithms
2021
Jet cross sections at high-energy colliders exhibit intricate patterns of logarithmically enhanced higher-order corrections. In particular, so-called non-global logarithms emerge from soft radiation emitted off energetic partons inside jets. While this is a single-logarithmic effect at lepton colliders, at hadron colliders phase factors in the amplitudes lead to double-logarithmic corrections starting at four-loop order. This effect was discovered a long time ago, but not much is known about the higher-order behavior of these terms and their process dependence. We derive, for the first time, the all-order structure of these "super-leading logarithms" for generic $2\to l$ scattering processe…
Quelle actualité de la notion de mémoire collective ?
2021
National audience
Metronomic Chemotherapy for Metastatic Breast Cancer.
2021
<b><i>Background:</i></b> As disease control and quality of life play a leading role in metastatic breast cancer (MBC), metronomic chemotherapy (MCT) is gaining popularity alongside conventional chemotherapy (CCT) and targeted therapies. <b><i>Summary:</i></b> MCT, defined as continuous administration of low-dose chemotherapeutic agents, is accepted as a therapy that exerts its effects via immunomodulation, anti-angiogenesis and direct cytotoxic effects. Oral administration of MCT is safe, easy to handle, and allows for flexible drug dosing. Dose accumulations associated with non-tolerable side effects are rare, so the medication can be admini…
Status, distribution and conservation of Kentish plover <em>Charadrius alexandrinus</em> (Aves, Charadriiformes) in Sicily
2021
The Kentish Plover Charadrius alexandrinus is a sensitive species whose national breeding population has been undergoing a sharp decrease, up to 50%, in 2010 compared to the previous decade. Due to the lack of updated data and fragmented knowledge about its current status and distribution in Sicily, a specific and accurate monitoring of this species was carried out during the years 2018 and 2019. About 230 km of coastline and 64 UTM squares 10x10 km were investigated during the breeding seasons, and a total of 205-287 pairs have been estimated for the whole region, distributed in 41 UTM squares (including the island of Favignana). Pairs are mainly concentrated in the complex of “Saline di T…
Intravitreal dexamethasone implant versus anti-vascular endothelial growth factor therapy combined with cataract surgery in patients with diabetic ma…
2021
Objective: to compare outcomes of cataract surgery combined with either anti-Vascular Endothelial Growth Factor (anti-VEGF) therapy or dexamethasone implant (DEX) in patients with diabetic macular oedema (DMO). Methods: Pubmed and Embase databases were searched for studies reporting outcomes of diabetic cataract surgery combined with either anti-VEGF or DEX, with a follow-up ≥3 months. The primary outcome was the mean change in central macular thickness (CMT). Mean change in best corrected visual acuity (BCVA) was considered as a secondary outcome. The mean difference between baseline and post-treatment values (MD) with 95%-Confidence Interval (95%CI) was calculated and meta-analyses were p…
Suppression of Electrographic Seizures Is Associated with Amelioration of QTc Interval Prolongation in Patients with Traumatic Brain Injury.
2021
Introduction: Disorders in electroencephalography (EEG) are commonly noted in patients with traumatic brain injury (TBI) and may be associated with electrocardiographic disturbances. Electrographic seizures (ESz) are the most common features in these patients. This study aimed to explore the relationship between ESz and possible changes in QTc interval and spatial QRS-T angle both during ESz and after ESz resolution. Methods: Adult patients with TBI were studied. Surface 12-lead ECGs were recorded using a Cardiax device during ESz events and 15 min after their effective suppression using barbiturate infusion. The ESz events were diagnosed using Masimo Root or bispectral index (BIS) devices.…
Letter of Reply to “Response to: COVID-19 Vaccination Willingness and Hesitancy in Patients With Inflammatory Bowel Diseases: Analysis of Determinant…
2021
To the Editors, We thank Drs. R. Mungmunpuntipantip and V. Wiwanitkit1 for their comment on our recently published article, “COVID-19 Vaccination Willingness and Hesitancy in Patients With Inflammatory Bowel Diseases: Analysis of Determinants in a National Survey of the Italian IBD Patients’ Association”.
Challenges and Experiences Extending the cBioPortal for Cancer Genomics to a Molecular Tumor Board Platform
2021
In Molecular Tumor Boards (MTBs), therapy recommendations for cancer patients are discussed. To aid decision-making based on the patient’s molecular profile, the research platform cBioPortal was extended based on users’ requirements. Additionally, a comprehensive dockerized workflow was developed to support the deployment of cBioPortal and connected services. In this work, we present the challenges and experiences of nearly two years of implementing and deploying an MTB platform based on cBioPortal and compare those to findings of a previous study.
Spin pumping in noncollinear antiferromagnets
2021
The ac spin pumping of noncollinear antiferromagnets is theoretically investigated. Starting from an effective action description of the spin system, we derive the Onsager coefficients connecting the spin pumping and spin-transfer torque associated with the dynamics of the SO(3)-valued antiferromagnetic order parameter. Our theory is applied to a kagome antiferromagnet resonantly driven by a uniform external magnetic field. We demonstrate that the reactive (dissipative) spin-transfer torque parameter can be extracted from the pumped ac spin current in-phase (in quadrature) with the driving field. Furthermore, we find that the three spin-wave bands of the kagome AF generate spin currents wit…
L’Épreuve du temps. Accidents, répétitions, rythmes et handicap
2021
International audience
Measurement of the absolute branching fractions of J/ψ→γη and η decay modes
2021
Happening en la plaza del pueblo: Malpartida Fluxus Village
2021
International audience; A mediados de los setenta, el artista alemán Wolf Vostell, uno de los máximos exponentes del movimiento de vanguardia Fluxus, descubría, de la mano de su esposa extremeña, Mercedes Guardado, el pueblo cacereño de Malpartida, donde acabaría pasando largas temporada con su familia, alternándolas con estancias en Berlín, a la sazón su principal lugar de residencia. Deslumbrado por el pétreo paisaje de Los Barruecos, al que calificó de obra de arte de la naturaleza, decide fundar en 1976, el mismo año en que llegó el agua corriente al pueblo, un museo de un nuevo tipo, móvil, cambiante, que pretendía borrar las fronteras entre vida y arte, con el happening, la performanc…
Supersolid-superfluid phase separation in the extended Bose-Hubbard model
2021
Recent studies have suggested a new phase in the extended Bose-Hubbard model in one dimension at integer filling [1,2]. In this work, we show that this new phase is phase-separated into a supersolid and superfluid part, generated by mechanical instability. Numerical simulations are performed by means of the density matrix renormalization group algorithm in terms of matrix product states. In the phase-separated phase and the adjacent homogeneous superfluid and supersolid phases, we find peculiar spatial patterns in the entanglement spectrum and string-order correlation functions and show that they survive in the thermodynamic limit. In particular, we demonstrate that the elementary excitatio…
Spin accumulation in metallic thin films induced by electronic impurity scattering
2021
In order to explore the spin accumulation, evaluating the spin galvanic and spin Hall effect, we utilize the semi-classical Boltzmann equation based on input from the relativistic Korringa-Kohn-Rostoker Green's function method, within the density functional theory. We calculate the spin accumulation including multiple contributions, especially skew-scattering (scattering-in term) and compare this to three different approximations, which include the isotropic and anisotropic relaxation time approximation. For heavy metals, with strong intrinsic spin-orbit coupling, we find that almost all the effects are captured within the anisotropic relaxation time approximation. On the other hand, in lig…