cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Topological and edge state properties of a three-band model for Sr2RuO4
Creators: name: Imai, Yoshiki
name: Wakabayashi, Katsunori
name: Sigrist, Manfred
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Modeling the spin-triplet superconductor Sr2RuO4 through a three-orbital tight-binding model we investigate topological properties and edge states assuming chiral p-wave pairing. In concordance with experiments the three Fermi surfaces consist of two electron-like and one hole-like one corresponding to the alpha-, beta- and gamma-band on the level of a two-dimensional system. The quasi-particle spectra and other physical quantities of the superconducting phase are calculated by means of a self-consistent Bogoliubov-de Gennes approach for a ribbon shaped system. While a full quasiparticle excitation gap is realized in the bulk system, at the edges gapless states appear some of which have linear and others nearly flat dispersion around zero energy. This study shows the interplay between spin-orbit coupling induced spin currents, chiral edge currents and correlation driven surface magnetism. The topological nature of the chiral p-wave state manifests itself in the gamma-band characterized by an integer Chern number. As the gamma-band is close to a Lifshitz transition in Sr2RuO4, changing the sign of the Chern number, the topological nature may be rather fragile.
description: 10 pages, 16 figures
Digital Quantum Simulation of Spin Systems in Superconducting Circuits
Creators: name: Heras, U. Las
name: Mezzacapo, A.
name: Lamata, L.
name: Filipp, S.
name: Wallraff, A.
name: Solano, E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We propose the implementation of a digital quantum simulator for prototypical spin models in a circuit quantum electrodynamics architecture. We consider the feasibility of the quantum simulation of Heisenberg and frustrated Ising models in transmon qubits coupled to coplanar waveguide microwave resonators. Furthermore, we analyze the time evolution of these models and compare the ideal spin dynamics with a realistic version of the proposed quantum simulator. Finally, we discuss the key steps for developing the toolbox of digital quantum simulators in superconducting circuits.
description: 5 pages, 3 figures, accepted in Physical Review Letters
Relative subanalytic sheaves
Creators: name: Fernandes, Teresa Monteiro
name: Prelli, Luca
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 18F10, 18F20, 32B20

description: Given a projection $f$ of a product of real analytic manifolds onto one factor, let us say, $S$, and a subanalytic sheaf $\mathcal{F}$ on the associated subanalytic site, we give a natural construction of the (subanalytic) relative sheaf $\mathcal{F}^S$. Applying our construction to the subanalytic sheaves of tempered distributions, holomorphic functions and Whitney $\mathcal{C}^{\infty}$-functions we obtain their relative versions and study their properties.
description: 18 pages
Substructure and dynamical state of 2092 rich clusters of galaxies derived from photometric data
Creators: name: Wen, Z. L.
name: Han, J. L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Dynamical state of galaxy clusters is closely related to their observational properties in X-ray, optical and radio wavelengths. We develop a method to diagnose the substructure and dynamical state of galaxy clusters by using photometric data of Sloan Digital Sky Survey (SDSS). To trace mass distribution, the brightness distribution of member galaxies is smoothed by using a Gaussian kernel with a weight of their optical luminosities. After deriving the asymmetry, the ridge flatness and the normalized deviation of the smoothed optical map, we define a relaxation parameter, Gamma, to quantify dynamical state of clusters. This method is applied to a test sample of 98 clusters of 0.05
description: 19 pages, 20 figures, 2 tables, updated to match the MNRAS version
title: Coping with racism : Japanese students' experiences of racist encounters in Britain
Creators: name: Nishimuta, Yumiko
Publisher: name: University of Kent
Year: 2022

description: The aim of this study is to identify and describe the Japanese student’s experiences of university in Britain through an interview process, looking at their experiences of racial discrimination, racial awareness and their responses, coping strategies that evolve during their years of study for the Japanese students. The overall questions are: what experiences and understandings of race and racism do Japanese students encounter in Britain, and how do they cope with these experiences? Further questions include: How may this experience in Britain differ according to 'gender', ‘pre-departure expectation’? There are several issues that researcher must address in order to elaborate these questions. There is very little sociological literature on Japanese students who come to study in Britain or other Western societies. Japanese students in Britain are not typical immigrants, since they come for a few years to study. Nor are they 'native' ethnic minorities who have historically experienced colonialism and racial subordination.
Huerta ECOMAZZ: Semillas de conocimiento multidisciplinar
Creators: name: Ibargüen, Rosina
name: Gladys, Zuluaga
name: AGUDELO VELASQUEZ, OLGA LUCÍA
name: Gallego, Lucía
name: Zuleta Carmona, Doricelly
Publisher: name: Zenodo
Year: 2024

description: Este artículo evalúa el impacto de la implementación de huertas escolares urbanas y el rescate del conocimiento ancestral sobre plantas alimenticias, aromáticas y medicinales en la Institución Educativa Madre María Mazarello. El proyecto ECOMAZZ integra diversas áreas del currículo, como Ciencias Naturales, Tecnología, Ciencias Sociales, Educación Artística, Ética y Religión, promoviendo la participación activa de estudiantes, padres y abuelos. A través de la investigación científica liderada por las estudiantes, se examinaron temas como los beneficios medicinales de plantas autóctonas y la optimización de sistemas de riego. Los resultados muestran un fortalecimiento de la seguridad alimentaria, la sustentabilidad ambiental y el bienestar emocional de la comunidad escolar. Además, se evidenció un aprendizaje interdisciplinario significativo y la aplicación de conocimientos teóricos en la huerta escolar, lo cual incentivó el pensamiento crítico y la resolución de problemas reales. El artículo destaca la relevancia de los proyectos de investigación en la formación científica de las estudiantes y la manera en que el enfoque de huerta urbana contribuye a la creación de huertas caseras en los hogares. Finalmente, se presentan recomendaciones para la expansión del proyecto y su replicabilidad en otras instituciones educativas.
Lattice bosons in a quasi-disordered environment: The effects of next-nearest-neighbor hopping on localization and Bose-Einstein condensation
Creators: name: Ramakumar, R.
name: Das, A. N.
name: Sil, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We present a theoretical study of the effects of the next-nearest-neighbor (NNN) hopping ($t_2$) on the properties of non-interacting bosons in optical lattices in the presence of an Aubry-André quasi-disorder. First we investigate, employing exact diagonalization, the effects of $t_2$ on the localization properties of a single boson. The localization is monitored using an entanglement measure as well as with inverse participation ratio. We find that the sign of $t_2$ has a significant influence on the localization effects. We also provide analytical results in support of the trends found in the localization behavior. Further, we extend these results including the effects of a harmonic potential which obtains in experiments. Next, we study the effects of $t_2$ on Bose-Einstein condensation. We find that, a positive $t_2$ strongly enhances the low temperature thermal depletion of the condensate while a negative $t_2$ reduces it. It is also found that, for a fixed temperature, increasing the quasi-disorder strength reduces the condensate fraction in the extended regime while enhancing it in the localized regime. We also investigate the effects of boundary conditions and that of the phase of the AA potential on the condensate. These are found to have significant effects on the condensate fraction in the localization transition region.
description: 12 pages with figures,more references added, revised version
title: Mineralizing microangiopathy as a long term complication of radiotherapy
Creators: name: Vázquez Tobías, Adolfo Natanael
Publisher: name: EURORAD
Year: 2022
Subjects: subject: Neuroradiology
subject: Neuroradiology brain
subject: CT
subject: Clinical Cases

description: Clinical History: A 14-year-old male patient with history of supratentorial ependymoma that was excised and received chemotherapy and radiotherapy 4 years prior was brought for evaluation due to persistent headache.

description: 14 years, male
JKCS041: a Coma cluster progenitor at z=1.803
Creators: name: Andreon, S.
name: Newman, A. B.
name: Trinchieri, G.
name: Raichoor, A.
name: Ellis, R. S.
name: Treu, T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Using deep two-color near-infrared HST imaging and unbiased grism spectroscopy we present a detailed study of the z=1.803 JKCS041 cluster. Uniquely, for a high redshift cluster, we confirm a mass of $\log M=14.2$ in solar units using four different techniques based on the X-ray temperature, the X-ray luminosity and the cluster richness. JKCS041 is thus a progenitor of a local system like the Coma cluster. Our rich dataset and the abundant population of 14 spectroscopically-confirmed red sequence galaxies allows us to explore the past star formation history of this system in unprecedented detail. Remarkably, we find a prominent red sequence down to stellar masses as low as $\log M=9.8$, corresponding to a mass range of 2 dex. These quiescent galaxies are concentrated around the cluster center with a core radius of 330 kpc. Blue members are few and avoid the cluster center. In JKCS041 quenching was therefore largely completed by a look-back time of 10 Gyr and we can constrain the epoch at which this occurred via spectroscopic age-dating of the individual galaxies. Most galaxies were quenched about 1.1 Gyr prior to the epoch of observation. The less massive quiescent galaxies are somewhat younger, corresponding to a decrease in age of 650 Myr per mass dex, but the scatter in age at fixed mass is only 380 Myr (at $\log M=11$). The size-mass relation of quiescent galaxies in JKCS041 is consistent with that observed for local clusters within our uncertainties. Comparing our data on JKCS041 with 41 clusters at lower redshift, we find that the form of the mass function of red sequence galaxies has hardly evolved in the past 10 Gyr, both in terms of its faint end slope and characteristic mass. Despite observing JKCS041 soon after its quenching and the three fold expected increase in mass in the next 10 Gyr, it is already remarkably similar to present-day clusters.
description: A&A, in press. From v1 added one additional cluster mass estimate and emphasized possible differential cluster-field size evolution
Interações entre o morcego Sturnira lilium (Chiroptera: Phyllostomidae) e plantas da família Solanaceae
Creators: name: Aurelio Ribeiro De Mello, Marco
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Mammalia
Chiroptera
Chordata
Animalia
bats
bat

description: (Uploaded by Plazi for the Bat Literature Project) No abstract provided.
Optimization of an Amplification Protocol for Misfolded Proteins by using Relaxed Control
Creators: name: Coron, Jean-Michel
name: Gabriel, Pierre
name: Shang, Peipei
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We investigate an optimal control problem which arises in the optimization of an amplification technique for misfolded proteins. The improvement of this technique may play a role in the detection of prion diseases. The model consists in a linear system of differential equations with a nonlinear control. The appearance of oscillations in the numerical simulations is understood by using the Perron and Floquet eigenvalue theory for nonnegative irreductible matrices. Then to overcome the unsolvability of the optimal control, we relax the problem. In the two dimensional case we solve explicitely the optimal relaxed control problem when the final time is large enough.
Parkinson's Biomarkers Pipeline Report
Creators: name: Farrand, Ariana
name: Hennessey, Conor
name: Oliveira, Luis
name: Purdy, Katherine
name: Padmanabhan, Shalini
name: Tome Garcia, Jessica
name: Hutten, Samantha
Publisher: name: Zenodo
Year: 2023
Subjects: Parkinson's Disease
Biomarkers
Pipeline

description: This report provides an overview of the Parkinson’s Disease (PD) biomarkers landscape, with a focus on biochemical and molecular based assays that MJFF staff is monitoring. It is intended to reflect biomarkers at various stages of development and validation for the indicated intended uses (e.g., diagnosis, monitoring, etc.) Although MJFF and the field are actively pursuing discovery-based efforts, these will not be included in this report until key 'hits' have been identified and individual measures can be moved through this pipeline. Finally, some biomarkers currently under development are not reflected here due to confidentiality. Internally, MJFF is leveraging this report to identify critical gaps in our portfolio and monitor progression of promising measures moving towards qualification. This will help shape MJFF’s biomarkers vision and strategy and ensure transparency and communication across efforts. Externally, this report will serve as a resource to our partners who may be interested in MJFF’s biomarkers portfolio and opinion on the state of the field. It could also be used to help determine which biomarker(s) may be relevant to include as exploratory endpoints in clinical trials. The report will be updated and distributed on an annual basis.
description: Acknowledgements: Brit Mollenhauer, Kalpana Merchant, Doug Galasko
Soft Skills na pós-pandemia COVID-19: principais habilidades do mercado de trabalho atual
Creators: name: Hashimoto, Herminda A. Bulhões S.
name: Brudnicki, Gabriel
name: Jussara Budel
name: Sater, Lucas Boutros
name: Santos, Paola Andrea Jaeger Dos
Publisher: name: Zenodo
Year: 2022

description: .
Hybrid quantization of an inflationary model: The flat case
Creators: name: Fernández-Méndez, Mikel
name: Marugán, Guillermo A. Mena
name: Olmedo, Javier
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a complete quantization of an approximately homogeneous and isotropic universe with small scalar perturbations. We consider the case in which the matter content is a minimally coupled scalar field and the spatial sections are flat and compact, with the topology of a three-torus. The quantization is carried out along the lines that were put forward by the authors in a previous work for spherical topology. The action of the system is truncated at second order in perturbations. The local gauge freedom is fixed at the classical level, although different gauges are discussed and shown to lead to equivalent conclusions. Moreover, descriptions in terms of gauge-invariant quantities are considered. The reduced system is proven to admit a symplectic structure, and its dynamical evolution is dictated by a Hamiltonian constraint. Then, the background geometry is polymerically quantized, while a Fock representation is adopted for the inhomogeneities. The latter is selected by uniqueness criteria adapted from quantum field theory in curved spacetimes, which determine a specific scaling of the perturbations. In our hybrid quantization, we promote the Hamiltonian constraint to an operator on the kinematical Hilbert space. If the zero mode of the scalar field is interpreted as a relational time, a suitable ansatz for the dependence of the physical states on the polymeric degrees of freedom leads to a quantum wave equation for the evolution of the perturbations. Alternatively, the solutions to the quantum constraint can be characterized by their initial data on the minimum-volume section of each superselection sector. The physical implications of this model will be addressed in a future work, in order to check whether they are compatible with observations.
description: 20 pages, no figures. v2: minor changes, in particular, abstract shortened, final discussion improved
Nonasymptotic densities for shape reconstruction
Creators: name: Ibrahim, Sharif
name: Sonnanburg, Kevin
name: Asaki, Thomas J.
name: Vixie, Kevin R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: In this work, we study the problem of reconstructing shapes from simple nonasymptotic densities measured only along shape boundaries. The particular density we study is also known as the integral area invariant and corresponds to the area of a disk centered on the boundary that is also inside the shape. It is easy to show uniqueness when these densities are known for all radii in a neighborhood of r = 0, but much less straightforward when we assume that we only know the area invariant and its derivatives for only one r > 0. We present variations of uniqueness results for reconstruction (modulo translation and rotation) of polygons and (a dense set of) smooth curves under certain regularity conditions.
description: 35 pages, updated to accepted author manuscript
title: Intein mediated high throughput screening for bispecific antibodies
Creators: name: Hofmann, Tim Lothar
Publisher: name: UNSPECIFIED
Year: 2020

description: The plethora of bispecific antibody architectures can be harnessed to elicit a broad variety of specific modes of actions, spanning from enhanced selectivity by simultaneous avid binding to distinct effector cell recruitment, all of which cannot be addressed by monospecific antibodies. Pharmaceutical antibody discovery has been evolving and continuously growing over the past decades, moving towards the field of complex biologics and mostly bispecific antibodies. Despite their high potential value, discovery of bispecific antibodies as the identification of the best possible combination of two parental monospecific antibodies, however, remains challenging. Discovery of two sets of monospecific antibodies followed by cloning, production and functional investigation of combinations is tedious and often resulting in undesired extended development times and increased expenses. But although automated high throughput screening approaches have become increasingly relevant and mature for pharmaceutical small molecule and classical antibody discovery, screening of bispecific antibodies is, however, up to now very limited by laborious preparation of the tremendous number of potential bispecific combinations. Therefore, a novel high throughput screening method for bispecific antibodies was developed in this study, allowing a full coverage of the large combinatorial screening space and bypass the afore mentioned limitations. This achievement is realized by the ability of the split intein Npu DnaE, to splice proteins in trans. Antibody fragments are fused within the hinge region to a respective split intein part, capable to reconstitute two antibody fragments back to a full-length antibody format in vitro, without extensive cloning and manufacturing work. Throughout the study, all reconstituted antibodies remained similarly biologically active in several biochemical and functional cell assays when compared to genetically fused references. The reconstitution method is furthermore amenable for automated high throughput screening providing the possibility to screen for bispecific combinations by combinatorial mixing of antibody fragments. High throughput amenability was investigated for 96 well and 384 well plates confirming both high reconstitution efficiency and reproducibility. Fab fragments were combined with different Fc fragments as exemplary application for fast switch effector function screenings of monoclonal in addition to bispecific antibodies. The method described could enable bispecific antibody high throughput binding and functional cellular screenings to greatly shorten development times and enhance the probability of identifying the optimal combination, ultimately leading to the generation of better biotherapeutics.
Condensate Phase Microscopy
Creators: name: Kosior, Arkadiusz
name: Sacha, Krzysztof
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We show that the phase of a Bose-Einstein condensate wave-function of ultra-cold atoms in an optical lattice potential in two-dimensions can be detected. The time-of-flight images, obtained in a free expansion of initially trapped atoms, are related to the initial distribution of atomic momenta but the information on the phase is lost. However, the initial atomic cloud is bounded and this information, in addition to the time-of-flight images, is sufficient in order to employ the phase retrieval algorithms. We analyze the phase retrieval methods for model wave-functions in a case of a Bose-Einstein condensate in a triangular optical lattice in the presence of artificial gauge fields.
description: 6 pages, 3 figures, article + supplement, version accepted for publication in Physical Review Letters
Clinical practice guidelines on management of infantile hemangioma: a systematic quality appraisal using the AGREE II instrument
Creators: name: De Ravin, Emma
name: Barrette, Louis-Xavier
name: Lu, Joseph
name: Xu, Katherine
name: Suresh, Neeraj
name: Romeo, Dominic
name: Moreira, Alvaro
name: Rajasekaran, Karthik
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Infantile hemangiomas (IH) are the most common benign tumors of childhood. Timely diagnosis and management of higher-risk IH is key in avoiding permanent disfigurement, visual impairment, and life-threatening airway compromise. Here, we identify and critically appraise existing clinical practice guidelines (CPGs) for IH diagnosis and management. A systematic search of MEDLINE, SCOPUS, and EMBASE was conducted until August 2021. Four independent reviewers assessed each CPG utilizing the Appraisal of Guidelines for Research and Evaluation, 2nd edition (AGREE II). An scaled domain score of ≥60% demonstrated adequacy in a given domain. Intraclass correlation coefficients (ICC) assessed agreement and scoring consistency between the reviewers. Eight CPGs were eligible and included for critical appraisal. Only one CPG was classified as ‘high quality’, with the remaining seven guidelines being ‘average’ (n = 3) or ‘low’ (n = 4) quality. Six guidelines (75.0%) were conducted via nonsystematic literature searches. The ‘Applicability’ (40.4%±14.0) and ‘Rigor of development’ (46.9%±17.3) domains achieved the lowest scores, while the highest average scores were in ‘Scope and purpose’ (76.7%±11.3) and ‘Editorial independence’ (90.8%±13.0). We found high consistency between the four independent reviewers, with ‘very good’ (n = 5) or ‘good’ (n = 1) interrater reliability in all six AGREE II domains. Based on the AGREE II instrument, there is only one available high-quality consensus statement on the diagnosis and management of IH. Low scores in ‘Rigor of development’ and ‘Applicability’ suggest notable weaknesses in the development process and reporting quality of existing IH CPGs. Future guidelines should be backed by systematic literature searches and focus on guideline clinical translation.
Conjunctive queries for logic-based information extraction
Creators: name: Thompson, Sam M
Publisher: name: Loughborough University
Year: 2022
Subjects: Other information and computing sciences

description: This thesis offers two logic-based approaches to conjunctive queries in the context of information extraction. The first and main approach is the introduction of conjunctive query fragments of the logics FC and FC[REG], denoted as FC-CQ and FC[REG]-CQ respectively. FC is a first-order logic based on word equations, where the semantics are defined by limiting the universe to the factors of some finite input word. FC[REG] is FC extended with regular constraints. Our first results consider the comparative expressive power of FC[REG]-CQ in relation to document spanners (a formal framework for the query language AQL), and various fragments of FC[REG]-CQ – some of which coincide with well-known language generators, such as patterns and regular expressions. Then, we look at decision problems. We show that many decision problems for FC-CQ and FC[REG]-CQ (such as equivalence and regularity) are undecidable. The model checking problem for FC-CQ and FC[REG]-CQ is NP-complete even if the FC-CQ is acyclic – under the definition of acyclicity where each word equation in an FC-CQ is an atom. This leads us to look at the “decomposition” of an FC word equation into a conjunction of binary word equations (i.e., of the form x =˙ y · z). If a query consists of only binary word equations and the query is acyclic, then model checking is tractable and we can enumerate results efficiently. We give an algorithm that decomposes an FC-CQ into an acyclic FC-CQ consisting of binary word equations in polynomial time, or determines that this is not possible. The second approach is to consider the dynamic complexity of FC. This uses the common way of encoding words in a relational structure using a universe with a linear order along with symbol predicates. Then, each element of the universe can carry a symbol if the predicate for said symbol holds for that element. Instead of the “usual way” (looking at first-order logic over these structures), we study the dynamic complexity, where symbols can be modified. As each of these modifications only changes one position, the result of a query before and after the modification is likely to be related. This gives rise to dynamic descriptive complexity classes based on the logic needed to incrementally maintain a query. For such an approach, we show that conjunctive queries are sufficient to maintain the so-called core spanners. In fact, we show that dynamic conjunctive queries (DynCQ) are actually more expressive than core spanners, and dynamic first-order logic (DynFO) is more expressive than generalized core spanners.
Photoluminescence in array of doped semiconductor nanocrystals
Creators: name: Reich, K. V.
name: Chen, Tianran
name: Efros, Al. L.
name: Shklovskii, B. I.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the dependence of the quantum yield of photoluminescence of a dense, periodic array of semiconductor nanocrystals (NCs) on the level of doping and NC size. Electrons introduced to NCs via doping quench photoluminescence by the Auger process, so that practically only NCs without electrons contribute to the photoluminescence. Computer simulation and analytical theory are used to find a fraction of such empty NCs as a function of the average number of donors per NC and NC size. For an array of small spherical NCs, the quantization gap between 1S and 1P levels leads to transfer of electrons from NCs with large number of donors to those without donors. As a result, empty NCs become extinct, and photoluminescence is quenched abruptly at an average number of donors per NC close to 1.8. The relative intensity of photoluminescence is shown to correlate with the type of hopping conductivity of an array of NCs.
Mollow triplet for cavity-mediated laser cooling
Creators: name: Kim, Oleg
name: Beige, Almut
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Here we analyse cavity-mediated laser cooling for an experimental setup with an external trap which strongly confines the motion of a particle in the direction of the cavity axis. It is shown that the stationary state phonon number exhibits three sharp minima as a function of the atom-cavity detuning due to a direct atom-phonon-photon coupling term in the system Hamiltonian. These resonances have the same origin as the Mollow triplet in the resonance fluorescence of a laser-driven atomic system. It is shown that a laser-Rabi frequency-dependent atom-cavity detuning yields the lowest stationary state phonon number for a wide range of experimental parameters.
description: 10 pages, 7 figures, improved version, new title
Safety of reducing antibiotic use in children with febrile neutropenia: A systematic review
Creators: name: Moortgat, Jennifer
name: Boulanger, Cécile
name: Chatzis, Olga
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Febrile neutropenia is the most frequent complication in children treated with chemotherapy. Nevertheless, neutropenic children are a very heterogeneous group and invasive bacterial infections concern a minority of patients. Reducing antibiotics would bring many benefits. Yet, we can only explore this strategy if the safety of children is preserved. The main aims of this review were to study the safety and effectiveness of reducing antibiotic use in children with febrile neutropenia in terms of duration, route of administration (oral versus intravenous) and narrowing of antimicrobial spectrum. Cochrane Library, Pubmed and Embase were searched for relevant articles until February 2020. We have included all articles describing controlled trials written in French or in English. The risk of bias was assessed with ROB-2 (Cochrane Handbook for Systematic Reviews of Interventions Version 6.0. 2019, Chap. 8) or ROBINS-1 (Cochrane Handbook for Systematic Reviews of Interventions Version 6.0. 2019, Chap. 25). On 2351 articles, the systematic research retained 13 studies. Nine were used for a meta-analysis comparing oral versus intravenous treatment. We found no pediatric studies concerning de-escalation of empiric broad-spectrum antibiotics. No publication biases were found and almost all of the selected studies were at low risk or with some concern for bias. In comparing oral versus intravenous treatment and early cessation versus continuing antibiotics when no infection is proven, we found no difference in terms of safety (mortality and admission in intensive care unit) and efficacy (need of readmission/antibiotic modification/recurrence of fever). It seems safe and effective to provide oral treatment in low-risk febrile neutropenia and to stop antibiotics when no bacterial infection is proven. Spectrum reduction remains an important topic in pediatric research. Supplemental data for this article is available online at https://doi.org/10.1080/08880018.2022.2055245
IMPLICATION DE L'ENTREPRENARIAT DANS LA CROISSANCE ÉCONOMIQUE A MADAGASCAR
Creators: name: BELA Christian
name: MAMIARISOA Jean Edith Françoise
name: MBIMA Césaire
Publisher: name: Zenodo
Year: 2024

description: L'esprit d'entreprenariat est un moyen efficace d'accroître la productivité des entreprises. Il est au cœur du développement économique de chaque nation. De nombreuses personnes ne réalisent même pas l'importance de l'entrepreneuriat pour la croissance économique. L'entrepreneuriat à Madagascar est essentiel pour stimuler la croissance économique, réduire la pauvreté et encourager l'innovation. La question de recherche est comme suit: Quel est le rôle de l'entrepreneuriat dans l'amélioration de la croissance économique à Madagascar ? L'objectif de ce manuscrit est de montrer l'importance de l'entrepreneuriat sur la croissance économique. L'hypothèse de ce travail est la suivante: L'implication de l'entrepreneuriat est une condition sine qua non pour améliorer la croissance économique d'un pays. Des recherches documentaires, des entretiens ont été effectués pour réaliser ce travail. La descente sur le terrain n’a pas oublié pour vérifier la réalité. Les données collectés sont traités sous format Word et Excel. Les résultats montrent que l’'Île Madagascar a enregistré une forte création d'entreprises en 2019, avec plus de 3 000 entreprises privées. Cette hausse a considérablement diminué en 2020, en raison de l'enfermement. L'entrepreneuriat est un moteur essentiel de la création d'emplois dans une économie. L'investissement privé est bien inférieur à l'investissement public, mais que l'investissement privé ne diminue pas beaucoup. Ce n'est qu'en 2022 que l'investissement. En 2022, l'investissement privé atteignait 78,1 %, et en 2023, il a chuté de 44,5 %. L'esprit d'entreprise et l'attractivité des investissements sont étroitement liés et jouent un rôle crucial dans le développement économique d'une région ou d'un pays. Selon ce tableau, l'IDE à Madagascar est beaucoup plus élevé que dans les pays africains, allant de 2,4 % à 2,6 % de l'IDE en Afrique. L'esprit d'entreprise et l'IDE sont étroitement liés et peuvent se renforcer mutuellement. À ce titre, elles sont souvent à l'origine de nouveaux processus ou produits, et contribuent à la création d'emplois.
Proprietà Intellettuale vs Scienza ApertaPromesse e contraddizioni del bilanciamento giudiziale dei diritti
Creators: name: Caso, Roberto
Publisher: name: Zenodo
Year: 2022
Subjects: Proprietà intellettuale
Diritto d'autore
Patrimonio culturale

description: 1.I giudici italiani e gli argomenti interpretativi: esempi relativi al diritto d’autore 2.Le guerre di proprietà intellettuale: cenni 3.Il c.d. dialogo tra le corti e un enigma italiano (tornando al punto di partenza)
Andreev reflection in monolayer MoS2
Creators: name: Majidi, Leyla
name: Rostami, Habib
name: Asgari, Reza
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Andreev reflection in a monolayer molybdenum disulfide superconducting-normal (S/N) hybrid junction is investigated. We find, by using a modified-Dirac Hamiltonian and the scattering formalism, that the perfect Andreev reflection happens at normal incidence with $p$-doped S and N regions. The probability of the Andreev reflection and the resulting Andreev conductance, in this system, are demonstrated to be large in comparison with corresponding gapped graphene structure. We further investigate the effect of a topological term ($β)$ in the Hamiltonian and show that it results in an enhancement of the Andreev conductance with $p$-doped S and N regions, while in the corresponding structure with $n$-doped S region it is strongly reducible in comparison. This effect can be explained in terms of the dependence of the Andreev reflection probability on the sign of $β$ and the chemical potential in the superconducting region.
description: 8 pages, 6 figures, accepted for publication in Phys. Rev. B
Antiresonance phase shift in strongly coupled cavity QED
Creators: name: Sames, C.
name: Chibani, H.
name: Hamsen, C.
name: Altin, P. A.
name: Wilk, T.
name: Rempe, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We investigate phase shifts in the strong coupling regime of single-atom cavity quantum electrodynamics (QED). On the light transmitted through the system, we observe a phase shift associated with an antiresonance and show that both its frequency and width depend solely on the atom, despite the strong coupling to the cavity. This shift is optically controllable and reaches 140 degrees - the largest ever reported for a single emitter. Our result offers a new technique for the characterization of complex integrated quantum circuits.
description: 5 pages, 5 figures
An Improved Multipole Approximation for Self-Gravity and Its Importance for Core-Collapse Supernova Simulations
Creators: name: Couch, Sean M.
name: Graziani, Carlo
name: Flocke, Norbert
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Self-gravity computation by multipole expansion is a common approach in problems such as core-collapse and Type Ia supernovae, where single large condensations of mass must be treated. The standard formulation of multipole self-gravity suffers from two significant sources of error, which we correct in the formulation presented in this article. The first source of error is due to the numerical approximation that effectively places grid cell mass at the central point of the cell, then computes the gravitational potential at that point, resulting in a convergence failure of the multipole expansion. We describe a new scheme that avoids this problem by computing gravitational potential at cell faces. The second source of error is due to sub-optimal choice of location for the expansion center, which results in angular power at high multipole $l$ values in the gravitational field, requiring a high --- and expensive --- value of multipole cutoff \lmax. By introducing a global measure of angular power in the gravitational field, we show that the optimal coordinate for the expansion is the square-density-weighted mean location. We subject our new multipole self-gravity algorithm to two rigorous test problems: MacLaurin spheroids for which exact analytic solutions are known, and core-collapse supernovae. We show that key observables of the core-collapse simulations, particularly shock expansion, proto-neutron star motion, and momentum conservation, are extremely sensitive to the accuracy of the multipole gravity, and the accuracy of their computation is greatly improved by our reformulated solver.
description: 13 pages, 4 figures, accepted by ApJ
Safety of reducing antibiotic use in children with febrile neutropenia: A systematic review
Creators: name: Moortgat, Jennifer
name: Boulanger, Cécile
name: Chatzis, Olga
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Febrile neutropenia is the most frequent complication in children treated with chemotherapy. Nevertheless, neutropenic children are a very heterogeneous group and invasive bacterial infections concern a minority of patients. Reducing antibiotics would bring many benefits. Yet, we can only explore this strategy if the safety of children is preserved. The main aims of this review were to study the safety and effectiveness of reducing antibiotic use in children with febrile neutropenia in terms of duration, route of administration (oral versus intravenous) and narrowing of antimicrobial spectrum. Cochrane Library, Pubmed and Embase were searched for relevant articles until February 2020. We have included all articles describing controlled trials written in French or in English. The risk of bias was assessed with ROB-2 (Cochrane Handbook for Systematic Reviews of Interventions Version 6.0. 2019, Chap. 8) or ROBINS-1 (Cochrane Handbook for Systematic Reviews of Interventions Version 6.0. 2019, Chap. 25). On 2351 articles, the systematic research retained 13 studies. Nine were used for a meta-analysis comparing oral versus intravenous treatment. We found no pediatric studies concerning de-escalation of empiric broad-spectrum antibiotics. No publication biases were found and almost all of the selected studies were at low risk or with some concern for bias. In comparing oral versus intravenous treatment and early cessation versus continuing antibiotics when no infection is proven, we found no difference in terms of safety (mortality and admission in intensive care unit) and efficacy (need of readmission/antibiotic modification/recurrence of fever). It seems safe and effective to provide oral treatment in low-risk febrile neutropenia and to stop antibiotics when no bacterial infection is proven. Spectrum reduction remains an important topic in pediatric research.
Two-loop fermionic electroweak corrections to the Z-boson width and production rate
Creators: name: Freitas, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Improved predictions for the Z-boson decay width and the hadronic Z-peak cross-section within the Standard Model are presented, based on a complete calculation of electroweak two-loop corrections with closed fermion loops. Compared to previous partial results, the predictions for the Z width and hadronic cross-section shift by about 0.6 MeV and 0.004 nb, respectively. Compact parametrization formulae are provided, which approximate the full results to better than 4 ppm.
description: 7 pages; v2: few typos fixed and minor corrections of numbers in tables
A Universal Power-law Profile of Pseudo-Phase-Space Density-like Quantities in Elliptical Galaxies
Creators: name: Chae, Kyu-Hyun
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study profiles of mass density, velocity dispersion (VD), and their combination using $\sim 2000$ nearly spherical and rotation-free SDSS galaxies. For observational stellar mass density $ρ_{\star}(r)$ we consider a range of dark matter (DM) distribution $ρ_{\rm{DM}}(r)$ and VD anisotropy $β(r)$ to investigate radial stellar VD $σ_{\rm\star r}(r)$ using the spherical Jeans equation. While mass and VD profiles vary appreciably depending on DM distribution and anisotropy, the pseudo-phase-space density-like combination $ρ(r)/σ_{\rm\star r}^3(r)$ with total density $ρ(r)= ρ_{\star}(r)+ρ_{\rm{DM}}(r)$ is nearly universal. In the optical region the minus of its logarithmic slope has a mean value of $\langleχ\rangle\approx 1.86$--$1.90$ with a galaxy-to-galaxy rms scatter of $\approx 0.04$--$0.06$, which is a few times smaller than that of $ρ(r)$ profiles. The scatter of $χ$ can be increased by invoking wildly varying anisotropies that are, however, less likely because they would produce too large a scatter of line-of-sight VD profiles. As an independent check of this universality we analyze stellar orbit-based dynamical models of 15 ETGs of Coma cluster provided by J. Thomas. Coma ETGs, with $σ_{\star\rm{r}}(r)$ replaced by the rms velocity of stars $v_{\star\rm{rms}}(r)$ including net rotation, exhibit a similar universality with a slope of $χ= 1.93\pm 0.06$. Remarkably, the inferred values of $χ$ for ETGs match well the slope $\approx 1.9$ predicted by N-body simulations of DM halos. We argue that the inferred universal nature of $ρ(r)/σ_{\rm\star r}^3(r)$ cannot be fully explained by equilibrium alone, implying that some astrophysical factors conspire and/or it reflects a fundamental principle in collisionless formation processes.
description: ApJL, revised and accepted for publication
Nonlinear coupled-mode theory for periodic plasmonic waveguides and metamaterials with loss and gain
Creators: name: Sukhorukov, Andrey A.
name: Solntsev, Alexander S.
name: Kruk, Sergey S.
name: Neshev, Dragomir N.
name: Kivshar, Yuri S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We derive general coupled-mode equations describing the nonlinear interaction of electromagnetic modes in media with loss and gain. Our approach is rigorously based on the Lorentz reciprocity theorem, and it can be applied to a broad range of metal-dielectric photonic structures, including plasmonic waveguides and metamaterials. We verify that our general results agree with the previous analysis of particular cases, and predict novel effects on self- and cross-phase modulation in multi-layer nonlinear fishnet metamaterials.
description: 4 pages, 2 figures
Superpositions of Lorentzians as the class of causal functions
Creators: name: Dirdal, Christopher A.
name: Skaar, Johannes
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We prove that all functions obeying the Kramers-Kronig relations can be approximated as superpositions of Lorentzian functions, to any precision. As a result, the typical text-book analysis of dielectric dispersion response functions in terms of Lorentzians may be viewed as encompassing the whole class of causal functions. A further consequence is that Lorentzian resonances may be viewed as possible building blocks for engineering any desired metamaterial response, for example by use of split ring resonators of different parameters. Two example functions, far from typical Lorentzian resonance behavior, are expressed in terms of Lorentzian superpositions: A steep dispersion medium that achieves large negative susceptibility with arbitrarily low loss/gain, and an optimal realization of a perfect lens over a bandwidth. Error bounds are derived for the approximation.
description: 9 pages, 10 figures
Experimental Investigation on the Removal of p-Toluic Acid from Aqueous Solution using Functionalized Polymeric Sorbent
Creators: name: Davarpanah, Morteza
name: Ahmadpour, Ali
name: Rohani-Bastami, Tahereh
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Medicine
subject: Neuroscience
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Plant Biology

description: Polystyrene-divinylbenzene copolymer (PsDVB) was covalently functionalized with monoethanolamine (MEA), diethanolamine (DEA), and triethanolamine (TEA) by a simple method. The functionalized sorbents were characterized in terms of functionality and morphology, and used for the removal of p-toluic acid (p-TA) from aqueous solution. It was found that DEA-PsDVB has higher adsorption capacity than MEA- and TEA-PsDVB due to more accessible nitro and hydroxyl groups on its surface. Further investigation on the adsorptive properties of DEA-PsDVB indicated that the maximum uptake of p-TA occurred at the optimum pH of 5.3. The kinetics data was successfully represented by the pseudo-first-order model, and the behavior of the adsorption isotherms followed the Freundlich model well. Thermodynamic studies showed that the adsorption of p-TA onto DEA-PsDVB was an endothermic and spontaneous process along with the positive change in entropy. The regeneration of DEA-PsDVB was performed with 0.1 M NaOH solution, and results showed that 99% of the initial capacity was conserved after eight successive adsorption/regeneration cycles.
Big Data para la toma de decisiones en biblioteca
Creators: name: Rosen, Isabel Abedrapo
Publisher: name: Zenodo
Year: 2019
Subjects: big data
bibliotecas
analisis de datos
toma de decisiones
datos
informacion
conocimiento

description: Presentacion de la charla que abordo la importancia de los datos, su uso y analisis para mejoras en la gestión bibliotecaria.
description: Actividad de transferencia de conocimiento, realizada como finalización del proyecto "Diploma de Postítulo en Ciencia e Ingeniería de Datos". Financiado con adjudicación en concurso Fondo del Libro y la Lectura / Formación / Diplomados y Postítulos, folio n° 445364, Ministerio de las Culturas, las Artes y el Patrimonio de Chile.