cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A molecular dynamics simulation of DNA damage induction by ionizing radiation
Creators: name: Abolfath, Ramin M.
name: Carlson, David J.
name: Chen, Zhe J.
name: Nath, Ravinder
Publisher: name: arXiv
Year: 2013
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present a multi-scale simulation of early stage of DNA damages by the indirect action of hydroxyl ($^\bullet$OH) free radicals generated by electrons and protons. The computational method comprises of interfacing the Geant4-DNA Monte Carlo with the ReaxFF molecular dynamics software. A clustering method was employed to map the coordinates of $^\bullet$OH-radicals extracted from the ionization track-structures onto nano-meter simulation voxels filled with DNA and water molecules. The molecular dynamics simulation provides the time evolution and chemical reactions in individual simulation voxels as well as the energy-landscape accounted for the DNA-$^\bullet$OH chemical reaction that is essential for the first principle enumeration of hydrogen abstractions, chemical bond breaks, and DNA-lesions induced by collection of ions in clusters less than the critical dimension which is approximately 2-3 Å. We show that the formation of broken bonds leads to DNA base and backbone damages that collectively propagate to DNA single and double strand breaks. For illustration of the methodology, we focused on particles with initial energy of 1 MeV. Our studies reveal a qualitative difference in DNA damage induced by low energy electrons and protons. Electrons mainly generate small pockets of $^\bullet$OH-radicals, randomly dispersed in the cell volume. In contrast, protons generate larger clusters along a straight-line parallel to the direction of the particle. The ratio of the total DNA double strand breaks induced by a single proton and electron track is determined to be $\approx$ 4 in the linear scaling limit. The tool developed in this work can be used in the future to investigate the relative biological effectiveness of light and heavy ions that are used in radiotherapy.
description: 7 pages, 7 figures, accepted for publication in Physics in Medicine and Biology
Evolutionary Algorithms for Solving Unconstrained, Constrained and Multi-objective Noisy Combinatorial Optimisation Problems
Creators: name: Aishwaryaprajna
name: Rowe, Jonathan E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: We present an empirical study of a range of evolutionary algorithms applied to various noisy combinatorial optimisation problems. There are three sets of experiments. The first looks at several toy problems, such as OneMax and other linear problems. We find that UMDA and the Paired-Crossover Evolutionary Algorithm (PCEA) are the only ones able to cope robustly with noise, within a reasonable fixed time budget. In the second stage, UMDA and PCEA are then tested on more complex noisy problems: SubsetSum, Knapsack and SetCover. Both perform well under increasing levels of noise, with UMDA being the better of the two. In the third stage, we consider two noisy multi-objective problems (CountingOnesCountingZeros and a multi-objective formulation of SetCover). We compare several adaptations of UMDA for multi-objective problems with the Simple Evolutionary Multi-objective Optimiser (SEMO) and NSGA-II. We conclude that UMDA, and its variants, can be highly effective on a variety of noisy combinatorial optimisation, outperforming many other evolutionary algorithms.
description: An extended version of the version already published in Proceedings of the Genetic and Evolutionary Computation Conference Companion 2019
title: RDA/TDWG Attribution Metadata Working Group: Final Recommendations
Creators: name: Thessen, Anne E
name: Woodburn, Matt
name: Koureas, Dimitris
Publisher: name: Research Data Alliance
Year: 2018

description: Research collections are an important tool for understanding the Earth, its systems, and human interaction. Despite the importance of collections, many are not maintained or curated as thoroughly as they should. Part of the reason for this is the lack of professional reward for curation, maintenance, or collection. To address this gap in attribution metadata, this Working Group recommends the use of PROV entities and properties to link people (Agent), the curatorial actions they perform (Activity), and the digital or physical objects they are curating (Entity). Assigning a Role to an Agent is optional. These recommendations are discussed in the context of the RDA and existing standards. A separate technical document gives specific examples of three use cases as RDF Turtle representations and diagrams.
Causality and phase transitions in PT-symmetrical optical systems
Creators: name: Zyablovsky, A. A.
name: Vinogradov, A. P.
name: Dorofeenko, A. V.
name: Pukhov, A. A.
name: Lisyansky, A. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss phase transitions in PT-symmetric optical systems. We show that due to frequency dispersion of the dielectric permittivity, an optical system can have PT-symmetry at isolated frequency points only. An assumption of the existence of a PT-symmetric system in a continuous frequency interval violates the causality principle. Therefore, the ideal symmetry-breaking transition cannot be observed by simply varying the frequency.
Observation of enhanced free-electron radiation from photonic flatband resonances
Creators: name: Yang, Yi
name: Roques-Carmes, Charles
name: Kooi, Steven E.
name: Tang, Haoning
name: Beroz, Justin
name: Mazur, Eric
name: Kaminer, Ido
name: Joannopoulos, John D.
name: Soljačić, Marin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Flatbands emerge from a myriad of structures such as Landau levels, Lieb and Kagome lattices, linegraphs, and more recently moire superlattices. They enable unique properties including slow light in photonics, correlated phases in electronics, and supercollimation in both systems. Despite these intense parallel efforts, flatbands have never been shown to affect the core light-matter interaction between electrons and photons, which is limited by a dimensionality mismatch. Here, we reveal that a photonic flatband can overcome this mismatch between localized electrons and extended photons and thus remarkably boost their light-matter interaction. We design flatband resonances in a silicon-on-insulator photonic crystal slab to control and enhance the radiation emission from free electrons by tuning their trajectory and velocity. In particular, we record a 100-fold radiation enhancement from the conventional diffraction-enabled Smith-Purcell radiation, and show the potential of our approach to achieve $10^6$-fold enhancements and beyond. The enhancement also enables us to perform polarization shaping of free electron radiation from multiple flatbands and demonstrate an approach to measure photonic bands via angle-resolved electron-beam measurements. Our results suggest flatbands as ideal test beds for strong light-electron interaction in various systems, with particular relevance for efficient and compact free-electron light sources and accelerators.
description: 7 pages, 4 figures, supplementary included as ancillary file
Additional file 4 of Colored visual stimuli evoke spectrally tuned neuronal responses across the central nervous system of zebrafish larvae
Creators: name: Fornetto, Chiara
name: Tiso, Natascia
name: Pavone, Francesco Saverio
name: Vanzi, Francesco
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 4 : Fig.S4. Anatomical distributions of inhibitory responses at 3 dpf. Anatomical localization and example ΔF/F0 trace of neurons displaying a negative response to light in 3 dpf larva.
Additional file 5 of Colored visual stimuli evoke spectrally tuned neuronal responses across the central nervous system of zebrafish larvae
Creators: name: Fornetto, Chiara
name: Tiso, Natascia
name: Pavone, Francesco Saverio
name: Vanzi, Francesco
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 5 : Fig.S5. Tbar clusters in responsive neurons. Distributions of neuronal spectral responses classified with Tbar and shown as a function of their overall response to stimuli (quantified by T4D). Comparison of emergence of the different Tbar classes for two different choices of T thresholds.
Characterizing and Predicting the Robustness of Power-law Networks
Creators: name: LaRocca, Sarah
name: Guikema, Seth
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Power-law networks such as the Internet, terrorist cells, species relationships, and cellular metabolic interactions are susceptible to node failures, yet maintaining network connectivity is essential for network functionality. Disconnection of the network leads to fragmentation and, in some cases, collapse of the underlying system. However, the influences of the topology of networks on their ability to withstand node failures are poorly understood. Based on a study of the response of 2,000 power-law networks to node failures, we find that networks with higher nodal degree and clustering coefficient, lower betweenness centrality, and lower variability in path length and clustering coefficient maintain their cohesion better during such events. We also find that network robustness, i.e., the ability to withstand node failures, can be accurately predicted a priori for power-law networks across many fields. These results provide a basis for designing new, more robust networks, improving the robustness of existing networks such as the Internet and cellular metabolic pathways, and efficiently degrading networks such as terrorist cells.
Deep desulfurization of real fuel oils over tin-impregnated graphene oxide-hydrogen peroxide and formic acid catalyst-oxidant system
Creators: name: Yaseen, Muhammad
name: Subhan, Sidra
name: Khan, Kifayatullah
name: Farooq, Muhammad Usman
name: Ahmad, Waqas
name: Seema, Humaira
name: Naz, Rafia
name: Subhan, Fazle
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
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: Ecology
subject: Inorganic Chemistry

description: Herein, Tin-impregnated graphene oxide (Sn/GO) composite was designed and tested for the catalytic removal of sulfides from the simulated and real commercial oils in the hydrogen peroxide and formic acid (HCOOH/H2O2) oxidation system. The prepared GO and Sn/GO were characterized in terms of surface morphology and other catalytic properties, which confirmed that the Sn/GO catalyst has a large surface area and more surface functional groups than GO. The desulfurization activity of the Sn/GO-HCOOH/H2O2 system was analyzed for the model dibenzothiophene (DBT) and real commercial oil at different substrate concentrations, time, temperature, pH, and oxidant and catalyst doses. The results showed that the Sn/GO-HCOOH/H2O2 system removed 97% DBT from the model oil and accumulative sulfur of 90%, 69%, and 61%, respectively, from gasoline, diesel, and kerosene oil employing 0.03 g/10 mL catalyst, 2 mL of H2O2/HCOOH in 50 min at 50°C, and pH 3. Sn/GO could be recycled up to five consecutive runs retaining more than 57% efficiency. Due to its environmental greenness, ease of preparation, and cost-effectiveness, this unique catalyst-oxidant system can be envisioned for the oxidation of sulfides from real oils. Research HighlightsPristine and Sn-loaded GO composite were synthesized and characterized.The Sn/GO-HCOOH/H2O2 system oxidized 97 and 90 % DBT from the model and real oil.O2− radicals generated due to synergism between Sn/GO and HCOOH/H2O2 species.The Sn/GO-HCOOH/H2O2 system remained active for five successive reuses. Pristine and Sn-loaded GO composite were synthesized and characterized. The Sn/GO-HCOOH/H2O2 system oxidized 97 and 90 % DBT from the model and real oil. O2− radicals generated due to synergism between Sn/GO and HCOOH/H2O2 species. The Sn/GO-HCOOH/H2O2 system remained active for five successive reuses.
Numerical study of magnetic and pairing correlation in bilayer triangular lattice
Creators: name: Wu, Shuang
name: Li, Jinling
name: Gao, Pan
name: Liang, Ying
name: Ma, Tianxing
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: By using the determinant Quantum Monte Carlo method, the magnetic and pairing correlation of the Na$_{x}$CoO$_{2}\cdot$yH$_{2}$O system are studied within the Hubbard model on a bilayer triangular lattice. The temperature dependence of spin correlation function and pairing susceptibility with several kinds of symmetries at different electron fillings and inter layer coupling terms are investigated. It is found that the system shows an antiferromagnetic correlation around the half filling, and the $fn$-wave pairing correlation dominates over other kinds of pairing symmetry in the low doping region. As the electron filling decreases away from the half filling, both the ferromagnetic correlation and the $f$-wave paring susceptibility are enhanced and tend to dominate. It is also shown that both the magnetic susceptibility and paring susceptibility decrease as the inter layer coupling increases.
description: 6 pages, 7 figures. Accepted for for publication in Journal of Physics: Condensed Matter
Additional file 9 of Colored visual stimuli evoke spectrally tuned neuronal responses across the central nervous system of zebrafish larvae
Creators: name: Fornetto, Chiara
name: Tiso, Natascia
name: Pavone, Francesco Saverio
name: Vanzi, Francesco
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 9 : Fig.S9. Suppression of light artefacts. Illustration of elimination of light artefacts due to LED flash bleed-through in PMT detection by frame elimination.
Molecular properties by Quantum Monte Carlo: an investigation on the role of the wave function ansatz and the basis set in the water molecule
Creators: name: Zen, Andrea
name: Luo, Ye
name: Sorella, Sandro
name: Guidoni, Leonardo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Atomic Physics (physics.atom-ph)
subject: Computational Physics (physics.comp-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum Monte Carlo methods are accurate and promising many body techniques for electronic structure calculations which, in the last years, are encountering a growing interest thanks to their favorable scaling with the system size and their efficient parallelization, particularly suited for the modern high performance computing facilities. The ansatz of the wave function and its variational flexibility are crucial points for both the accurate description of molecular properties and the capabilities of the method to tackle large systems. In this paper, we extensively analyze, using different variational ansatzes, several properties of the water molecule, namely: the total energy, the dipole and quadrupole momenta, the ionization and atomization energies, the equilibrium configuration, and the harmonic and fundamental frequencies of vibration. The investigation mainly focuses on variational Monte Carlo calculations, although several lattice regularized diffusion Monte Carlo calculations are also reported. Through a systematic study, we provide a useful guide to the choice of the wave function, the pseudo potential, and the basis set for QMC calculations. We also introduce a new strategy for the definition of the atomic orbitals involved in the Jastrow - Antisymmetrised Geminal power wave function, in order to drastically reduce the number of variational parameters. This scheme significantly improves the efficiency of QMC energy minimization in case of large basis sets.
description: Reprinted (adapted) with permission from J. Chem. Theory Comput., DOI: 10.1021/ct400382m. Copyright (2013) American Chemical Society
Theoretical grounds for the propagation of uncertainties in Monte Carlo particle transport
Creators: name: Saracco, Paolo
name: Pia, Maria Grazia
name: Batic, Matej
Publisher: name: arXiv
Year: 2014
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We introduce a theoretical framework for the calculation of uncertainties affecting observables produced by Monte Carlo particle transport, which derive from uncertainties in physical parameters input into simulation. The theoretical developments are complemented by a heuristic application, which illustrates the method of calculation in a streamlined simulation environment.
description: 12 pages, 9 figures
Can process mapping and a multisite Delphi of perioperative professionals inform our understanding of system-wide factors that may impact operative risk?
Creators: name: Stubbs, Daniel
name: Bashford, Tom
name: Gilder, Fay
name: Nourallah, Basil
name: Ercole, Ari
name: Levy, Nicholas
name: Clarkson, John
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: Anaesthesia
1506
1682
ANAESTHETICS
SURGERY
Risk management
QUALITATIVE RESEARCH
STATISTICS & RESEARCH METHODS

description: Peer reviewed: True
description: OBJECTIVES: To examine whether the use of process mapping and a multidisciplinary Delphi can identify potential contributors to perioperative risk. We hypothesised that this approach may identify factors not represented in common perioperative risk tools and give insights of use to future research in this area. DESIGN: Multidisciplinary, modified Delphi study. SETTING: Two centres (one tertiary, one secondary) in the UK during 2020 amidst coronavirus pressures. PARTICIPANTS: 91 stakeholders from 23 professional groups involved in the perioperative care of older patients. Key stakeholder groups were identified via process mapping of local perioperative care pathways. RESULTS: Response rate ranged from 51% in round 1 to 19% in round 3. After round 1, free text suggestions from the panel were combined with variables identified from perioperative risk scores. This yielded a total of 410 variables that were voted on in subsequent rounds. Including new suggestions from round two, 468/519 (90%) of the statements presented to the panel reached a consensus decision by the end of round 3. Identified risk factors included patient-level factors (such as ethnicity and socioeconomic status), and organisational or process factors related to the individual hospital (such as policies, staffing and organisational culture). 66/160 (41%) of the new suggestions did not feature in systematic reviews of perioperative risk scores or key process indicators. No factor categorised as 'organisational' is currently present in any perioperative risk score. CONCLUSIONS: Through process mapping and a modified Delphi we gained insights into additional factors that may contribute to perioperative risk. Many were absent from currently used risk stratification scores. These results enable an appreciation of the contextual limitations of currently used risk tools and could support future research into the generation of more holistic data sets for the development of perioperative risk assessment tools.
A comprehensive review of Binary Neural Network
Creators: name: Yuan, Chunyu
name: Agaian, Sos S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: Deep learning (DL) has recently changed the development of intelligent systems and is widely adopted in many real-life applications. Despite their various benefits and potentials, there is a high demand for DL processing in different computationally limited and energy-constrained devices. It is natural to study game-changing technologies such as Binary Neural Networks (BNN) to increase deep learning capabilities. Recently remarkable progress has been made in BNN since they can be implemented and embedded on tiny restricted devices and save a significant amount of storage, computation cost, and energy consumption. However, nearly all BNN acts trade with extra memory, computation cost, and higher performance. This article provides a complete overview of recent developments in BNN. This article focuses exclusively on 1-bit activations and weights 1-bit convolution networks, contrary to previous surveys in which low-bit works are mixed in. It conducted a complete investigation of BNN's development -from their predecessors to the latest BNN algorithms/techniques, presenting a broad design pipeline and discussing each module's variants. Along the way, it examines BNN (a) purpose: their early successes and challenges; (b) BNN optimization: selected representative works that contain essential optimization techniques; (c) deployment: open-source frameworks for BNN modeling and development; (d) terminal: efficient computing architectures and devices for BNN and (e) applications: diverse applications with BNN. Moreover, this paper discusses potential directions and future research opportunities in each section.
description: accepted by journal of Artificial Intelligence Review
Additional file 1 of Protocol for a systematic review on the experience of informal caregivers for people with a moderate to advanced dementia within a domestic home setting
Creators: name: James, Charles
name: Walshe, Catherine
name: Froggatt, Katherine
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1:. PRISMA-P checklist
Critical Thickness Ratio for Buckled and Wrinkled Fruits and Vegetables
Creators: name: Dai, Hui-Hui
name: Liu, Yang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Fruits and vegetables are usually composed of exocarp and sarcocarp and they take a variety of shapes when they are ripe. Buckled and wrinkled fruits and vegetables are often observed. This work aims at establishing the geometrical constraint for buckled and wrinkled shapes based on a mechanical model. The mismatch of expansion rate between the exocarp and sarcocarp can produce a compressive stress on the exocarp. We model a fruit/vegetable with exocarp and sarcocarp as a hyperelastic layer-substrate structure subjected to uniaxial compression. The derived bifurcation condition contains both geometrical and material constants. However, a careful analysis on this condition leads to the finding of a critical thickness ratio which separates the buckling and wrinkling modes, and remarkably, which is independent of the material stiffnesses. More specifically, it is found that if the thickness ratio is smaller than this critical value a fruit/vegetable should be in a buckling mode (under a sufficient stress); if a fruit/vegetable in a wrinkled shape the thickness ratio is always larger than this critical value. To verify the theoretical prediction, we consider four types of buckled fruits/vegetables and four types of wrinkled fruits/vegetables with three samples in each type. The geometrical parameters for the 24 samples are measured and it is found that indeed all the data fall into the theoretically predicted buckling or wrinkling domains. Some practical applications based on this critical thickness ratio are briefly discussed.
description: 11 pages 9 figures 2 tables
Caderno Profissional para o acompanhamento do preparo do Plano de Parto
Creators: name: Zveiter, Marcele
name: Patrocínio, Joana Lima do
name: Abreu, Jéssica Hastenreiter
name: Barroso, Suellen de Almeida
Publisher: name: Zenodo
Year: 2023
Subjects: Cuidado Pré-Natal
Educação em Saúde
Parto
Saúde da Mulher
Gravidez

description: Este caderno é composto de sugestões para a elaboração de um Plano de Parto. Cada item está detalhado e acompanhado de recomendações para atividades educativas, na rotina da assistência pré-natal, nas consultas coletivas e nos grupos de gestantes. A proposta é que o conjunto de itens do Plano de Parto funcione como um roteiro para essas atividades.
On higher spin realizations of K(E10)
Creators: name: Kleinschmidt, Axel
name: Nicolai, Hermann
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Starting from the known unfaithful spinorial representations of the compact subalgebra K(E10) of the split real hyperbolic Kac-Moody algebra E10 we construct new fermionic `higher spin' representations of this algebra (for `spin-5/2' and `spin-7/2', respectively) in a second quantized framework. Our construction is based on a simplified realization of K(E10) on the Dirac and the vector spinor representations in terms of the associated roots, and on a re-definition of the vector spinor first introduced by Damour and Hillmann. The latter replaces manifestly SO(10) covariant expressions by new expressions that are covariant w.r.t. SO(1,9), the invariance group of the DeWitt metric restricted to the space of scale factors. We present explicit expressions for all K(E10) elements that are associated to real roots of the hyperbolic algebra (of which there are infinitely many), as well as novel explicit realizations of the generators associated to imaginary roots and their multiplicities. We also discuss the resulting realizations of the Weyl group.
description: 33 pages
Additional file 2 of Protocol for a systematic review on the experience of informal caregivers for people with a moderate to advanced dementia within a domestic home setting
Creators: name: James, Charles
name: Walshe, Catherine
name: Froggatt, Katherine
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2:. MEDLINE draft search
Sporadic neighbour-transitive codes in Johnson graphs
Creators: name: Neunhoeffer, Max
name: Praeger, Cheryl E
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 05C25, 20B25, 94B60

description: We classify the neighbour-transitive codes in Johnson graphs J(v, k) of minimum distance at least three which admit a neighbour-transitive group of automorphisms that is an almost simple two-transitive group of degree v and does not occur in an infinite family of two-transitive groups. The result of this classification is a table of 22 codes with these properties. Many have relatively large minimum distance in comparison to their length v and number of code words. We construct an additional five neighbour-transitive codes with minimum distance two admitting such a group. All 27 codes are t-designs with t at least two.
description: 14 pages
Additional file 7 of Colored visual stimuli evoke spectrally tuned neuronal responses across the central nervous system of zebrafish larvae
Creators: name: Fornetto, Chiara
name: Tiso, Natascia
name: Pavone, Francesco Saverio
name: Vanzi, Francesco
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 7 : Fig.S7. Calcium response dynamics. Distributions of peak time points for responses measured in experiments with visual stimulation and in unstimulated controls.
title: Η συμμετοχή των γονέων στη φροντίδα των παιδιών που νοσηλεύονται στη Μονάδα Εντατικής Θεραπείας
title: The participation of parents in the care of children hospitalized in the Intensive Care Unit
titleType: AlternativeTitle
Creators: name: Φουστέρη, Νατάσσα
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2022
Subjects: Pediatric intensive care units
Φροντίδα και μονάδα εντατικής θεραπείας
Ικανοποίηση γονέων
Οικογενειοκεντρική φροντίδα Fcc
Οικογενειοκεντρικές ιατρικές επισκέψεις

description: Εισαγωγή: Το περιβάλλον της Μονάδας Εντατικής Νοσηλείας (ΜΕΘ) παίδων επιδρά με πολλούς τρόπους στα νοσηλευόμενα παιδιά και τις οικογένειές τους. Η απομάκρυνση των παιδιών από τους γονείς και την οικογένειά τους και η μη συμμετοχή τους στη φροντίδα των παιδιών αποτελεί έναν κρίσιμο παράγοντα που επιδρά στη φροντίδα των παιδιών. Σκοπός: Σκοπός της μελέτης ήταν η διερεύνηση της παρουσίας των γονέων στη φροντίδα των παιδιών που νοσηλεύονται σε ΜΕΘ παίδων και νεογνών. Μεθοδολογία: Συστηματική ανασκόπηση της βιβλιογραφίας με τη χρήση λέξεων κλειδιών: «pediatric intensive care units, family centered care, family centered rounds, parents, presence», σε διεθνείς βιβλιογραφικές βάσεις δεδομένων (Medline, PubMed, Scopus, Cochrane Library) καθώς και συνώνυμα και συνδυασμός των όρων. Χρησιμοποιήθηκε η διαδικασία PICOTS (Population, Intervention, Comparator, Outcome, Timing, Setting) σαν αξιολογικό κριτήριο για την εισαγωγή των άρθρων στη μελέτη. Τα κριτήρια εισαγωγής των άρθρων στη μελέτη ήταν: να αφορούν μελέτες σε νεογνά ή/και βρέφη ή/και παιδιά (έως 18 ετών) που νοσηλεύονται σε ΜΕΘ, να είναι δημοσιευμένα από 2010-2022, να αφορούν μελέτες που αναφέρουν τουλάχιστον ένα αποτέλεσμα, να αφορούν ποσοτικές μελέτες, προοπτικές μελέτες, μελέτες παρατήρησης ή ποιοτικές μελέτες. Αποτελέσματα: Τα αποτελέσματα των μελετών του δείγματος έδειξαν ότι η οικογενειοκεντρική φροντίδα (FCC) και οι οικογενειοκεντρικές ιατρικές επισκέψεις (FCR) επιδρούν θετικά στα νοσηλευόμενα στις ΜΕΘ νεογνά και παιδιά καθώς οι γονείς συμμετέχουν περισσότερο στη φροντίδα τους, αλλά και στους επαγγελματίες υγείας, παρά τις διαφοροποιήσεις που υπάρχουν. Συμπεράσματα: Η παρουσία των γονέων στη φροντίδα των παιδιών που νοσηλεύονται σε ΜΕΘ παίδων και νεογνών επιδρά θετικά στη φροντίδα των παιδιών, στους ίδιους τους γονείς και στους επαγγελματίες υγείας.
Path probability distribution of stochastic motion of non dissipative systems: a classical analog of Feynman factor of path integral
Creators: name: Lin, T. L.
name: Wang, R.
name: Bi, W. P.
name: Kaabouchi, A. El
name: Pujos, C.
name: Calvayrac, F.
name: Wang, Q. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate, by numerical simulation, the path probability of non dissipative mechanical systems undergoing stochastic motion. The aim is to search for the relationship between this probability and the usual mechanical action. The model of simulation is a one-dimensional particle subject to conservative force and Gaussian random displacement. The probability that a sample path between two fixed points is taken is computed from the number of particles moving along this path, an output of the simulation, devided by the total number of particles arriving at the final point. It is found that the path probability decays exponentially with increasing action of the sample paths. The decay rate increases with decreasing randomness. This result supports the existence of a classical analog of the Feynman factor in the path integral formulation of quantum mechanics for Hamiltonian systems.
description: 19 pages, 6 figures, 1 table. It is a new text based on arXiv:1202.0924 (to be withdrawn) with a completely different presentation. Accepted by Chaos, Solitons & Fractals for publication 2013
Gamma-Ray Burst Pulse Shapes: Evidence for Embedded Shock Signatures?
Creators: name: Hakkila, Jon
name: Preece, Robert D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A study of a set of well-isolated pulses in Long and Intermediate gamma ray burst light curves indicates that simple pulse models having smooth and monotonic pulse rise and decay regions are inadequate. Examining the residuals of fits of pulses to such models suggests the following patterns of departure from smooth pulses: three separate wavelike peaks found in the residuals of each pulse (the precursor peak, the central peak, and the decay peak) combine with the underlying Norris et al. (2005) pulse model to produce five distinct regions in the temporal evolution of each pulse. The Precursor Shelf occurs prior to or concurrent with the exponential Rapid Rise. The pulse reaches maximum intensity at the Peak Plateau, then undergoes a Rapid Decay. The decay gradually slows into an Extended Tail. Despite these distinct temporal segments, the pulses studied are almost universally characterized by hard to soft spectral evolution, arguing that the new pulse features reflect a single evolution, rather than being artifacts of pulse overlap. The fluctuations can give a single pulse the appearance of having up to three distinct localized peaks, leading to ambiguities in pulse-fitting if an incorrect pulse model is used. The approach demonstrates that complex GRBs may be composed of fewer pulses than indicated by the number of peaks. The large degree of similar spectro-temporal behavior within gamma-ray burst pulses indicates that a single process is responsible for producing pulses spanning a tremendous range of durations, luminosities, and spectral hardnesses, and the correlated characteristics of the wavelike peaks are related to the pulse asymmetry, suggesting kinematic origins that seem supportive of relativistic shocks.
description: 52 pages, 20 figures, accepted for publication in The Astrophysical Journal
Anderson Localization for the Almost Mathieu Operator in Exponential Regime
Creators: name: Liu, Wencai
name: Yuan, Xiaoping
Publisher: name: arXiv
Year: 2013
Subjects: subject: Spectral Theory (math.SP)
subject: FOS: Mathematics

description: For the almost Mathieu operator $(H_{λ,α,θ}u)_n=u_{n+1}+u_{n-1}+2λ\cos2π(θ+nα)u_n$, Avila and Jitomirskaya guess that for a.e. $θ$, $H_{λ,α,θ}$ satisfies Anderson localization if $ |λ| > e^{ β} $, and they establish this for $ |λ| > e^{\frac{16}{9} β}$. In the present paper, we extend their result to regime $ |λ| > e^{\frac{3}{2} β}$.
Electron Captures and Stability of White Dwarfs
Creators: name: Chamel, N.
name: Perot, L.
name: Fantina, A. F.
name: Chatterjee, D.
name: Ghosh, S.
name: Novak, J.
name: Oertel, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Electron captures by atomic nuclei in dense matter are among the most important processes governing the late evolution of stars, limiting in particular the stability of white dwarfs. Despite considerable progress in the determination of the equation of state of dense Coulomb plasmas, the threshold electron Fermi energies are still generally estimated from the corresponding $Q$ values in vacuum. Moreover, most studies have focused on nonmagnetized matter. However, some white dwarfs are endowed with magnetic fields reaching $10^9$ G. Even more extreme magnetic fields might exist in super Chandrasekhar white dwarfs, the progenitors of overluminous type Ia supernovae like SN 2006gz and SN 2009dc. The roles of the dense stellar medium and magnetic fields on the onset of electron captures and on the structure of white dwarfs are briefly reviewed. New analytical formulas are derived to evaluate the threshold density for the onset of electron captures for arbitrary magnetic fields. Their influence on the structure of white dwarfs is illustrated by simple analytical formulas and numerical calculations.
description: 20 pages, 5 figures, contribution to the Sixteenth Marcel Grossmann Meeting - MG16
Magnetic fields of Ap stars from full Stokes vector spectropolarimetric observations
Creators: name: Rusomarov, N.
name: Kochukhov, O.
name: Piskunov, N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Our current knowledge about the stellar magnetic fields relies almost entirely on the circular polarization observations. Very few objects have been observed so far in all four Stokes parameters. The magnetic Ap star HD24712 (DO Eri, HR1217) was recently observed in the Stokes IQUV parameters with the HARPSpol instrument at the 3.6-m ESO telescope. The resulting spectra have dense rotational phase coverage, resolving power > 10^5, and a S/N ratio of 300-600. These are the highest quality full Stokes observations obtained for any star other than the Sun. Here we present preliminary results of the magnetic Doppler imaging of HD24712 using HARPSpol spectra. This analysis is the first step towards obtaining detailed 3-D maps of magnetic fields abundance structures for HD24712 and in other Ap stars that we currently observe with HARPSpol.
Spin-dependent optical response of multiferroic EuO
Creators: name: Tong, Wen-Yi
name: Ding, Hang-Chen
name: Gao, Yong-Chao
name: Gong, Shi-jing
name: Wan, Xiangang
name: Duan, Chun-Gang
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using first-principles density functional calculations, electronic and optical properties of ferromagnetic semiconductor EuO are investigated. In particular, we have developed a way to obtain the spin-dependent optical response of the magnetic materials, which is helpful to verify the spin-dependent band structure of EuO. Significantly different optical responses from spin-up and spin-down channels are obtained in both linear and nonlinear cases, making it possible to distinguish contributions from different spin-channels in the optical absorption spectra if spin-flip process can be neglected. In addition, the red-shift of the absorption edge from paramagnetic to ferromagnetic ordering is explained by exchange interactions. Using such method, we have also compared the optical properties of multiferroic EuO which is induced by strong epitaxial strain. Our results show that from tensile to compressive strain, the blue-shift of the leading absorption peaks in the optical spectra, the red-shift of the optical band gap in spin-up state can be observed, consistent to the energy difference between spin-splitting orbits. The spin-dependent nonlinear optical properties reveal that in the infrared and visible light region, the contributions to second-harmonic generation (SHG) susceptibilities are mainly from spin-majority channels. In addition, the strain effect is also discussed. With the increase of epitaxial strain, the larger energy shift of the leading absorption peaks, and the more remarkable nonlinear optical response can be obtained.
description: 8 pages, 6 figures
Conducting and insulating LaAlO$_3$/SrTiO$_3$ interfaces: A comparative surface photovoltage investigation
Creators: name: Beyreuther, Elke
name: Paparo, Domenico
name: Thiessen, Andreas
name: Grafström, Stefan
name: Eng, Lukas M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Surface photovoltage (SPV) spectroscopy, which is a versatile method to analyze the energetic distribution of electronic defect states at surfaces and interfaces of wide-bandgap semiconductor (hetero-)structures, is applied to comparatively investigate heterostructures made of 5-unit-cell-thick LaAlO$_3$ films grown either on TiO$_2$- or on SrO-terminated SrTiO$_3$. As shown in a number of experimental and theoretical investigations in the past, these two interfaces exhibit dramatically different properties with the first being conducting and the second insulating. Our present SPV investigation reveals clearly distinguishable interface defect state distributions for both configurations when interpreted within the framework of a classical semiconductor band scheme. Furthermore, bare SrTiO$_3$ crystals with TiO$_2$ or mixed SrO/TiO$_2$ terminations show similar SPV spectra and transients as do LaAlO$_3$-covered samples with the respective termination of the SrTiO$_3$ substrate. This is in accordance with a number of recent works that stress the decisive role of SrTiO$_3$ and the minor role of LaAlO$_3$ with respect to the electronic interface properties.
description: 8 pages, 6 figures; supplement not uploaded to arXiv, see ref. [44] for a possible download link; submitted to J. Appl. Phys
Electronic fine structure in the nickel carbide superconductor Th$_{2}$NiC$_{2}$
Creators: name: Quan, Y.
name: Pickett, W. E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The recently reported nickel carbide superconductor, body centered tetragonal $I4/mmm$ Th$_2$NiC$_2$ with T$_c$ = 8.5 K increasing to 11.2 K upon alloying Th with Sc, is found to have very fine structure in its electronic spectrum, according to density functional based first principles calculations. The filled Ni 3d band complex is hybridized with C $2p$ and Th character to and through the Fermi level ($E_f$), and a sharply structured density of states arises only when spin-orbit coupling is included, which splits a zone-center degeneracy leaving a very flat band edge lying at the Fermi level. The flat part of the band corresponds to an effective mass $m^*_{z} \rightarrow \infty$ with large and negative $m^*_{x}=m^*_{y}$. Although the region over which the effective mass characterization applies is less than 1% of the zone volume, it yet supplies of the order of half the states at (or just above) the Fermi level. The observed increase of T$_c$ by hole-doping is accounted for if the reference as-synthesized sample is minutely hole-doped, which decreases the Fermi level density of states and will provide some stabilization. In this scenario, electron doping will increase the Fermi level density of states and the superconducting critical temperature. Vibrational properties are presented, and enough coupling to the C-Ni-C stretch mode at 70 meV is obtained to imply that superconductivity is electron-phonon mediated.
An impossibility theorem for linear symplectic circle quotients
Creators: name: Herbig, Hans-Christian
name: Seaton, Christopher
Publisher: name: arXiv
Year: 2013
Subjects: subject: Symplectic Geometry (math.SG)
subject: Commutative Algebra (math.AC)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: Primary 53D20, 13A50, Secondary 57S17

description: We prove that when $d>2$, a $d$-dimensional symplectic quotient at the zero level of a unitary circle representation $V$ such that $V^{\Sp^1}=\{0\}$ cannot be $\Z$-graded regularly symplectomorphic to the quotient of a unitary representations of a finite group.
description: 26 pages
Magnetization distribution and orbital moment in the non-Superconducting Chalcogenide Compound K0.8Fe1.6Se2
Creators: name: Nandi, S.
name: Xiao, Y.
name: Su, Y.
name: Chapon, L. C.
name: Chatterji, T.
name: Jin, W. T.
name: Price, S.
name: Wolf, T.
name: Brown, P. J.
name: Brückel, Th.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have used polarized and unpolarized neutron diffraction to determine the spatial distribution of the magnetization density induced by a magnetic field of 9 T in the tetragonal phase of K0.8Fe1.6Se2. The maximum entropy reconstruction shows clearly that most of the magnetization is confined to the region around the iron atoms whereas there is no significant magnetization associated with either Se or K atoms. The distribution of magnetization around the Fe atom is slightly nonspherical with a shape which is extended along the [0 0 1] direction in the projection. Multipolar refinement results show that the electrons which give rise to the paramagnetic susceptibility are confined to the Fe atoms and their distribution suggests that they occupy 3d t2g-type orbitals with around 66% in those of xz/yz symmetry. Detail modeling of the magnetic form factor indicates the presence of an orbital moment to the total paramagnetic moment of Fe2+
description: 7 pages, accepted for publication in Physical Review B
Classification and Spectral Evolution of Outbursts of Aql X-1
Creators: name: Güngör, Can
name: Güver, Tolga
name: Ekşi, K. Yavuz
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a broad classification of all outbursts detected with the All-Sky Monitor (ASM) on the Rossi X-Ray Timing Explorer (RXTE) and the Monitor of All Sky X-Ray Image (MAXI) of Aql X-1. We identify three types of outbursts; long-high, medium-low, and short-low, based on the duration and maximum flux. We analyse the trends in the "phase-space" of flux-derivative versus flux to demonstrate the differences in the three identified outburst types. We present a spectral analysis of the observations of Aql X-1 performed by the Proportional Counter Array (PCA) onboard RXTE during the 2000 and 2011 outbursts of the long-high class and the 2010 outburst of the medium-low class. We model the source spectrum with a hybrid thermal/non-thermal hot plasma emission model (EQPAIR in XSPEC, Coppi 2000) together with a Gaussian component to model the Fe K_alpha emission line. We construct time histories of the source flux, the optical depth of the corona (tau), the seed photon temperature (kT_bb) and the hard state compactness (l_h) for these three outbursts. We show that the physical parameters of either classes reach the same values throughout the outbursts, the only difference being the maximum flux. We discuss our results in the terms of modes of interaction of the star with the disc and size of the disc kept hot by irradiation. We conclude that irradiation is the dominant physical process leading to the different classes of outbursts.
description: MNRAS accepted. 12 pages, 9 figures, 3 tables