cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Psittacus erythroleucus Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Psittaciformes
Psittacidae
Psittacus
Psittacus erythroleucus

description: Psittacus erythroleucus [spec. nov.]
P. brachyurus cinereus, uropygio, rectricibus remigibusque coccineis. �
Psittacus erythroleucus. Aldr. orn. l. 11. c. 11. Will. orn. 76. Raj. av. 31.
Habitat ...
Magnitado Gallinae.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 99, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
title: ANALYZING SLAB HOLES IN SUBDUCTION ZONES AND THEIR IMPACTS THROUGH NUMERICAL SIMULATIONS
Creators: name: Arrowood, Taylor
Publisher: name: University of Kentucky Libraries
Year: 2021
Subjects: subject: FOS: Earth and related environmental sciences
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: Subduction zones form as higher density oceanic lithosphere is forced beneath an over-riding, lower density, continental or oceanic plate; a process driven by contrasts in buoyancy throughout this system. We seek to explore subduction zones in which the subducting lithosphere is discontinuous after passing through the trench, forming a slab gap. The main research objective is to determine the effect of slab gaps on surface topography in a subduction-related orogen and asthenospheric flow into the mantle wedge using two and three-dimensional numerical mechanical models. We obtain results from 24+ models that suggest a connection between slab gaps/holes and the magnitude and trend of topography produced during the first several million years of subduction. Two-dimensional models suggest there may be flow into slab gaps and tears, affecting mantle flow around the slab and producing less topography in the orogen. Three-dimensional models suggest the opposite is true, with larger slab gaps/holes producing less surface topography above the gap. The three-dimensional models also suggest that subduction-related orogens may have associated curvature above regions where slab gaps are present. This work shows new ways to test for the potential slab gaps/holes in subduction zones by looking at flow fields, surface topography, and orogenic/slab curvature.
description: © 2021 Taylor M. Arrowood
Nested Bodies: Fermentation as Embodied Praxis
Creators: name: Van Oyen, Julie
Publisher: name: Emily Carr University of Art and Design
Year: 2021
Subjects: Fermentation
Design
Artistic collaboration

description: The craft practice of fermentation prioritizes embodied know-how in the maker, and collaboration between the practitioner, fermenting microbes, and other beings and elements implicated in the process. This project draws from embodied design research methodologies to develop a material fermentation practice into a process-led research praxis, wherein theories of embodiment and the relational bodily self can be explored. This project then proposes how this embodied, multispecies praxis may cultivate a deeply relational connection between humans and the ecosystems they are embedded within, in order to conceive of and exercise more caring relations.
description: Interaction design
description: Embodied knowledge
description: Fermentation
description: Multispecies
description: Praxis
description: Relational self
description: Embodied design
Thermochemical processing: towards water-soluble carbon nanomaterials
Creators: name: Hu, Sheng (Cynthia)
Publisher: name: Imperial College London
Year: 2015

description: Functionalised carbon nanomaterials are desired in a wide variety of applications; however, it is important to ensure that any potential adverse effects are assessed and understood alongside the emerging nanotechnology. Although there have been numerous toxicity evaluations on different CNMs, with the focus on as-synthesised materials rather than functionalised materials; clarification of potential toxic effects of specific CNMs’ physicochemical properties are still unclear, impart to the lack of model materials with tailored properties, with which to compared and contrast. In this thesis, a thermochemical functionalisation methodology has been applied to as-synthesised, bulk carbon nanomaterials without damaging their intrinsic carbon framework. Compared to conventional approaches, this method has the advantages of using simple protocol, which are readily scalable and versatile to wide range of nanocarbons and functionalities. A comprehensive library of water-dispersible functionalised carbon nanomaterials were produced which include single-walled and multi-walled carbon nanotubes, graphene nanoplatelets and carbon black nanoparticles. These materials were prepared with well-controlled physicochemical properties, such as dimensions, surface charge and hydrophobicity etc. A series of nanotoxicological studies using the model materials have been carried out by our collaborators, employing various biological systems, with particular focus on their respiratory impact. In addition, the underlying mechanism of the thermochemical functionalisation methodology was explored, building and developing upon previous work.
Lithium in Blanco1: Implications for Stellar Mixing
Creators: name: Jeffries, R. D.
name: James, D. J.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We obtain lithium abundances for G and K stars in Blanco 1, an open cluster with an age similar to, or slightly younger than, the Pleiades. We critically examine previous spectroscopic abundance analyses of Blanco 1 and conclude that while there were flaws in earlier work, it is likely that Blanco 1 is close in overall metallicity to the older Hyades cluster and more metal-rich than the Pleiades. However, we find Blanco 1 has Li abundances and rotation rates similar to the Pleiades, contradicting predictions from standard stellar evolution models, in which convective pre-main sequence (PMS) Li depletion should increase rapidly with metallicity. If the high metallicity of Blanco 1 is subsequently confirmed, our observations imply (1) that a currently unknown mechanism severely inhibits PMS Li depletion, (2) that additional non-standard mixing modes, such as those driven by rotation and angular momentum loss, are then responsible for main sequence Li depletion between the ages of Blanco 1 and the Hyades, and (3) that in clusters younger than the Hyades, metallicity plays only a minor role in determining the amount of Li depletion among G and K stars. These conclusions suggest that Li abundance remains a useful age indicator among young (less than 700 Myr) stars even when metallicities are unknown. If non-standard mixing is effective in Population I stars, the primordial Li abundance could be significantly larger than present day Population II Li abundances, due to prior Li depletion.
description: 18 pages, 3 figs. To appear in ApJ Vol. 511 (Jan 20 1999)
Psittacus erithacus Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Psittaciformes
Psittacidae
Psittacus
Psittacus erithacus

description: Psittacus erithacus [spec. nov.]
P. brachyurus canus, temporibus albis, cauda coccinea. Mus. Ad. Fr. 1. p. 14.
Psittacus cinereus s. subcaeruleus. Aldr. ornith. l. 11. c. 10. Raj. av. 31. Alb. av. 1. p. 12. t. 12. Frisch. av. 4. t. 51.
Habitat in Guinea.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 99, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Infinite lattice models by expansion with a non-Gaussian initial approximation
Creators: name: Ivanov, Aleksandr
name: Sazonov, Vasily
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Recently, a convergent series employing a non-Gaussian initial approximation was constructed and shown to be an effective computational tool for the finite size lattice models with a polynomial interaction. Here we numerically examine the applicability of the convergent series method to models defined on infinite lattices. The comparison of the convergent series computations and the infinite lattice extrapolations of the Monte Carlo simulations reveals an agreement between two approaches.
description: In the current version, we prove that the Borel summability is a sufficient criteria for the correctness of the Convergent Series method
Relational Encounters: Negotiating Communication Barriers During the COVID-19 Pandemic
Creators: name: Tahir, Abeer
Publisher: name: Emily Carr University of Art and Design
Year: 2021
Subjects: COVID-19 (Disease)
Pandemics and COVID-19
Social distancing (Public health)
Communication Barriers
Storytelling

description: This thesis aims to explore and honor how people are trying to connect with each other during the isolation required by COVID-19. I embarked on a personal journey to understand how people were experiencing the barriers of communication when social distancing became necessary. The relational encounters among family, friends, and strangers have changed drastically. The care and connection that was once expressed through physical contact like hugs, pats on the shoulder, or wrapping one’s arms around each other, is now reduced to a restricted point of contact, such as through a window or across a distance. These small moments of interactions have proven to be jewels of connections under challenging times. Experiencing this firsthand myself further validated the trajectory of my research. Through a process of journaling, auto-ethnography, storytelling, story gathering, and story listening, I researched new characteristics of human relationships and connections formed among families and communities. The unconventional interactions that I saw taking place through windows and across other thresholds have deeply resonated with me. I asked myself, as a designer, how can I use storytelling as a method to aid social innovation to create a space of engagement within a community? Can design support the generation of new narratives where the families, friends, and fellow community members feel included and connected to each other? I have been observing interactions happening through windows outside of care homes. It inspired me to search for ways to support interactions and channels of communication in these constrained and challenging times. The design-driven outcome, Khirki, has proposed a narrative environment where the audience can physically, emotionally, and intellectually participate that will help to bring people together safely across barriers and appreciate precious moments of shared time.
description: Narrative environment
description: Relational encounter
description: Care concern
description: Social innovation
Computer-Assisted Electroanatomical Guidance for Cardiac Electrophysiology Procedures
Creators: name: Constantinescu, Mihaela
Publisher: name: Imperial College London
Year: 2017

description: Cardiac arrhythmias are serious life-threatening episodes aﬀecting both the aging population and younger patients with pre-existing heart conditions. One of the most eﬀective therapeutic procedures is the minimally-invasive catheter-driven endovascular electrophysiology study, whereby electrical potentials and activation patterns in the aﬀected cardiac chambers are measured and subsequent ablation of arrhythmogenic tissue is performed. Despite emerging technologies such as electroanatomical mapping and remote intraoperative navigation systems for improved catheter manipulation and stability, successful ablation of arrhythmias is still highly-dependent on the operator’s skills and experience. This thesis proposes a framework towards standardisation in the electroanatomical mapping and ablation planning by merging knowledge transfer from previous cases and patient-speciﬁc data. In particular, contributions towards four diﬀerent procedural aspects were made: optimal electroanatomical mapping, arrhythmia path computation, catheter tip stability analysis, and ablation simulation and optimisation. In order to improve the intraoperative electroanatomical map, anatomical areas of high mapping interest were proposed, as learned from previous electrophysiology studies. Subsequently, the arrhythmic wave propagation on the endocardial surface and potential ablation points were computed. The ablation planning is further enhanced, ﬁrstly by the analysis of the catheter tip stability and the probability of slippage at sparse locations on the endocardium and, secondly, by the simulation of the ablation result from the computation of convolutional matrices which model mathematically the ablation process. The methods proposed by this thesis were validated on data from patients with complex congenital heart disease, who present unusual cardiac anatomy and consequently atypical arrhythmias. The proposed methods also build a generic framework for computer guidance of electrophysiology, with results showing complementary information that can be easily integrated into the clinical workﬂow.
Few-femtosecond deep-UV Pulses for transient-absorption experiments
Creators: name: Brahms, Malte Christian
Publisher: name: Imperial College London
Year: 2018

description: In this thesis I describe the development, implementation and characterisation of a source of wavelength-tunable few-femtosecond laser pulses in the deep ultraviolet spectral region for use in time-resolved experiments. I also propose and model an extension of this source capable of simultaneously generating a single-cycle driving pulse for extreme nonlinear optics as well as a few-femtosecond ultraviolet pulse. Building on advances in the field of femtochemistry, ultrafast science is moving towards ever shorter timescales and more complex systems. One of the key building blocks for the next generation of experiments studying ultrafast dynamics in molecules will be the availability of few-femtosecond pulses to directly address electronic resonances whose corresponding photon energy lies in the vacuum and deep ultraviolet spectral regions. By harnessing the capabilities of soliton self-compression in novel micro-structured waveguides, we have generated pulses in the deep ultraviolet with energies of hundreds of nanojoules. The delivery of these pulses to an experiment as well as the measurement of their temporal profile pose significant challenges due to the dispersive properties of optical materials in the ultraviolet. We have developed an in-vacuum device for ultrafast pulse characterisation, and by directly coupling the waveguide to vacuum we were able to measure distortion-free pulses with durations below 10 fs at a range of different central wavelengths. Numerical modelling of a scaled-up version of the apparatus shows that the self-compressed driving pulse in the ultraviolet pulse generation process can maintain its shape when delivered directly to vacuum. The single-cycle pulse duration makes it an ideal driver for extreme nonlinear optics and the generation of isolated attosecond pulses in the soft X-ray spectral region.
Garnet ceramic electrolytes for next-generation lithium batteries
Creators: name: Brugge, Rowena
Publisher: name: Imperial College London
Year: 2018

description: All-solid-state lithium batteries are of great interest scientifically as a next-generation of electrochemical energy storage devices, owing to their superior safety features and their potential to enable new chemistries to improve performance. The properties of the solid state electrolyte are integral to the overall cell capability – to date the most promising group of materials are the garnet-structured oxides, based on Li7La3Zr2O12 (LLZO), with high room temperature ionic conductivity and a wide electrochemical stability window. There are several aspects in the development of this relatively new material which are yet to be fully understood – these are the focus of this thesis. In this work, processing cubic doped LLZO as a bulk ceramic was investigated and served as a basis for understanding its stability and electrochemical performance; it was optimised to obtain highly dense microstructures under atmosphere-controlled conditions to prevent reaction with moisture. Chemical inhomogeneities in the pellets, especially at the grain boundaries, as investigated by secondary ion mass spectrometry (SIMS) and low energy ion scattering, were shown to be important in determining the transport properties of the electrolyte - in particular the propensity for dendrite formation during cell cycling. It was shown that aluminium-rich grain boundaries in aluminium-doped LLZO favour the formation of inter-granular lithium dendrites (with a 60 % lower critical current density for cell failure) over gallium-doped LLZO. The use of germanium (Ge4+) as a dopant was studied, and shown to stabilise the cubic LLZO phase through substitution of 0.10 moles of Ge at the lithium sub-lattice (at the tetrahedral 24d sites), giving conductivities of the order 10-4 S cm-1 and redox stability over a 4.5 V range with lithium electrodes. Chemical and electrochemical characterisation of the moisture reactivity of gallium-doped LLZO was also carried out, showing a chemically-altered proton-rich region extending to 1.35 micrometres following 30 minutes immersion in H2O at 100 °C and highly reactive grain boundaries. These chemical changes led to a threefold increase in the resistance of both the electrolyte and the interface with lithium electrodes. Chemical and tracer diffusivity of protons were estimated from the diffusion profiles of H+ and D+ obtained by SIMS depth-profiling. A new methodology for measuring macroscopic lithium tracer diffusion in LLZO was introduced, using SIMS depth-profiling and isotopic labelling, in which a number of experimental parameters were varied to optimise the technique. The preliminary results for lithium diffusivity in doped LLZO obtained from this method were compared with values from other methods (impedance and nuclear magnetic resonance) and used to comment on the mechanism for lithium diffusion in the materials.
The performance of Lagrangian perturbation schemes at high resolution
Creators: name: Buchert, Thomas
name: Karakatsanis, Georgios
name: Klaffl, Robert
name: Schiller, Peter
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present high--spatial resolution studies of the density field as predicted by Lagrangian perturbation approximations up to the third order. The first--order approximation is equivalent to the ``Zel'dovich approximation'' for the type of initial data analyzed. The study is performed for two simple models which allow studying of typical features of the clustering process in the early non--linear regime. We calculate the initial perturbation potentials as solutions of Poisson equations algebraically, and automate this calculation for a given initial random density field. The presented models may also be useful for other questions addressed to Lagrangian perturbation solutions and for the comparison of different approximation schemes. In an accompanying paper we investigate a detailed comparison with various N--body integrators using these models (Karakatsanis \& Buchert 1995). Results of the present paper include the following: 1. The collapse is accelerated significantly by the higher--order corrections confirming previous results by Moutarde \etal (1991); 2. the spatial structure of the density patterns predicted by the ``Zel'dovich approximation'' differs much from those predicted by the second-- and third--order Lagrangian approximations; 3. Second--order effects amount to internal substructures such as ``second generation'' --pancakes, --filaments and --clusters, as are also observed in N--body simulations; 4. The third--order effect gives rise to substructuring of the secondary mass--shells. The hierarchy of shell--crossing singularities that form features small high--density clumps at the intersections of caustics which we interprete as gravitational fragmentation.
description: gzipped tar-file containing two ps-files, figures will be published in color and are not included, 17 pages, submitted to A & A
Reasonable Accommodation and Disability: a Comparative Analysis
Creators: name: Dormido Abril, Julia
name: Braj Choubey, Shantanu
name: Leonardi, Marco Aurelio
name: Zampieri, Giovanna
Publisher: name: Diritto della sicurezza sul lavoro
Year: 2024

description: In seguito ad un breve esame del contenuto della Convenzione delle Nazioni Unite sui diritti delle persone con disabilità, il presente contributo offre un’analisi comparata del diritto dell’Unione Europea, dei sistemi legali Italiano, Spagnolo, Indiano e Statunitense, in materia di ragionevoli accomodamenti. L’articolo si concentra principalmente sulla definizione di persona con disabilità, sul concetto di accomodamento “ragionevole” e “proporzionato”, e sugli strumenti di tutela applicabili in caso di violazione degli obblighi del datore di lavoro.
description: Diritto della sicurezza sul lavoro, N. 1 (2024)
Gaia Data Release 2: Validation of the classification of RR Lyrae and Cepheid variables with the Kepler and K2 missions
Creators: name: Molnár, László
name: Plachy, Emese
name: Juhász, Áron L.
name: Rimoldini, Lorenzo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The second data release of the Gaia mission includes an advance catalog of variable stars. The classification of these stars are based on sparse photometry from the first 22 months of the mission. We set out to investigate the purity and completeness of the all-sky Gaia classification results with the help of the continuous light curves of the observed targets from the Kepler and K2 missions, focusing specifically on RR Lyrae and Cepheid pulsators, outside the Galactic Bulge region. We crossmatched the Gaia identifications with the observations collected by the Kepler space telescope. We inspected the light curves visually, then calculated the relative Fourier coefficients and period ratios for the single- and double-mode K2 RR Lyrae stars to further classify them. We identified 1443 and 41 stars classified as RR Lyrae or Cepheid variables in Gaia DR2 in the targeted observations of the two missions and 263 more RR Lyre targets in the Full-Frame Images (FFI) of the original mission. We provide the crossmatch of these sources. We conclude that the RR Lyrae catalog has a completeness between 70-78%, and provide a purity estimate between 92-98% (targeted observations) with lower limits of 75% (FFI stars) and 51% (K2 worst-case scenario). The low number of Cepheids prevents us from drawing detailed conclusions but the purity of the DR2 sample is estimated to be around 66%.
description: 15 pages, 12 figures, 10 tables, accepted into the Gaia DR2 Special Issue in A&A. V1: submitted version, v2: accepted version. Lists available at http://konkoly.hu/~lmolnar/gaiakepler_datafiles_R1.zip
Understanding egocentric human actions with temporal decision forests
Creators: name: Garcia-Hernando, Guillermo
Publisher: name: Imperial College London
Year: 2017

description: Understanding human actions is a fundamental task in computer vision with a wide range of applications including pervasive health-care, robotics and game control. This thesis focuses on the problem of egocentric action recognition from RGB-D data, wherein the world is viewed through the eyes of the actor whose hands describe the actions. The main contributions of this work are its findings regarding egocentric actions as described by hands in two application scenarios and a proposal of a new technique that is based on temporal decision forests. The thesis first introduces a novel framework to recognise fingertip writing in mid-air in the context of human-computer interaction. This framework detects whether the user is writing and tracks the fingertip over time to generate spatio-temporal trajectories that are recognised by using a Hough forest variant that encourages temporal consistency in prediction. A problem with using such forest approach for action recognition is that the learning of temporal dynamics is limited to hand-crafted temporal features and temporal regression, which may break the temporal continuity and lead to inconsistent predictions. To overcome this limitation, the thesis proposes transition forests. Besides any temporal information that is encoded in the feature space, the forest automatically learns the temporal dynamics during training, and it is exploited in inference in an online and efficient manner achieving state-of-the-art results. The last contribution of this thesis is its introduction of the first RGB-D benchmark to allow for the study of egocentric hand-object actions with both hand and object pose annotations. This study conducts an extensive evaluation of different baselines, state-of-the art approaches and temporal decision forest models using colour, depth and hand pose features. Furthermore, it extends the transition forest model to incorporate data from different modalities and demonstrates the benefit of using hand pose features to recognise egocentric human actions. The thesis concludes by discussing and analysing the contributions and proposing a few ideas for future work.
A linear programming approach to inhomogeneous primordial nucleosynthesis
Creators: name: Leonard, Richard E.
name: Scherrer, Robert J.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine inhomogeneous primordial nucleosynthesis for {\it arbitrary} distributions $f$ of the baryon-to-photon ratio $η$, in the limit where neither particle diffusion nor gravitational collapse is important. By discretizing $f(η)$ and using linear programming, we show that for a set of $m$ constraints on the primordial element abundances, the maximum and minimum possible values of $\bar η$ (the final mean value of $η$) are given when $f(η)$ is a sum of at most $m+1$ delta functions. Our linear programming results indicate that when $f$ is taken to be an arbitrary function, there is no lower bound on $\bar η$, while the upper bound is essentially the homogeneous upper bound.
description: 9 pages, latex, no figures
Psittacus garrulus Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Psittaciformes
Psittacidae
Psittacus
Psittacus garrulus

description: Psittacus garrulus [spec. nov.]
P. brachyurus ruber, genibus alisque viridibus, rectricibus medietate postica caeruleis. Mus. Ad. Fr. 2. p.
Psittacus ruber, remigibus rectricibusque introrsum purpureis. It Wgot. 137.
Psittacus rufus, femoribus & alis viridibus. Frisch. av. 4. t. 45.
Psittacus coccineus, alis e viridi & nigro variis. Edw. av. 172. t. 172.
Habitat in Asia.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 100, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Comportamento Suicida em Pacientes Politraumatizados: Avaliação Psiquiátrica na Sala de Emergência
Creators: name: Flávia dayana Silva Pereira
name: Giovana Moreno Xavier
name: Danielly Patrícia de Brito Beltrand
name: Júlia Cândido Silva
name: Mellina Medici Delanos Ferreira
name: Alan Henrique Grecco Guedes
name: Valéria Goulart Viana
name: Amanda Wohlenberg
name: Gabriel da Silva Mariano
name: Leandro Calixto Henriques
name: Luma de Oliveira Bosquesi
name: Ana Beatriz Martini de Castro Gurgel
name: Wilson da Costa Veloso Neto
name: Laura Carvalho Rodrigues
name: Daniel Saraiva de Paula
Publisher: name: Zenodo
Year: 2025

description: Este capítulo aborda o manejo do paciente suicida na urgência e emergência hospitalar em avaliação psiquiátrica, destacando a necessidade de diretrizes claras e abrangentes para garantir uma abordagem adequada e efetiva. A revisão da literatura revelou a escassez de estudos nacionais nessa área, ressaltando a importância de uma maior atenção dos pesquisadores e profissionais de saúde. Os resultados evidenciaram a importância do exame físico e clínico inicial, a sensibilização para os transtornos mentais, a comunicação empática e a coordenação entre os serviços. O acolhimento ao paciente, a estabilização dos sinais vitais e o encaminhamento para os serviços especializados foram identificados como etapas cruciais no manejo do paciente suicida. A necessidade de uma abordagem multidisciplinar e uma maior conscientização sobre o comportamento suicida foram ressaltadas. Este estudo contribui para o aperfeiçoamento das práticas de manejo do suicídio na urgência e emergência, buscando melhorar a qualidade de vida dos pacientes e reduzir os índices de suicídio.
Preserving Topology while Breaking Chirality: From Chiral Orthogonal to Anti-symmetric Hermitian Ensemble
Creators: name: Akemann, Gernot
name: Kieburg, Mario
name: Mielke, Adam
name: Vidal, Pedro
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mathematical Physics (math-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider a parameter dependent ensemble of two real random matrices with Gaussian distribution. It describes the transition between the symmetry class of the chiral Gaussian orthogonal ensemble (Cartan class B$|$DI) and the ensemble of antisymmetric Hermitian random matrices (Cartan class B$|$D). It enjoys the special feature that, depending on the matrix dimension $N$, it has exactly $ν=0$ $(1)$ zero-mode for $N$ even (odd), throughout the symmetry transition. This "topological protection" is reminiscent of properties of topological insulators. We show that our ensemble represents a Pfaffian point process which is typical for such transition ensembles. On a technical level, our results follow from the applicability of the Harish-Chandra integral over the orthogonal group. The matrix valued kernel determining all eigenvalue correlation functions is explicitly constructed in terms of skew-orthogonal polynomials, depending on the topological index $ν=0,1$. These polynomials interpolate between Laguerre and even (odd) Hermite polynomials for $ν=0$ $(1)$, in terms of which the two limiting symmetry classes can be solved. Numerical simulations illustrate our analytical results for the spectral density and an expansion for the distribution of the smallest eigenvalue at finite $N$.
description: 48 pages, 6 figures; v2: 2 references added; v3: Version published in J. Stat. Mech
Correlation between electronic micro-roughness and surface topography in two-dimensional surface conducting hydrogen-terminated diamond
Creators: name: Yianni, Steve
name: Creedon, Daniel L
name: Schenk, Alex
name: Xing, Kaijian
name: Akhgar, Golrokh
name: Hoxley, David
name: Ley, Lothar
name: McCallum, Jeffrey C
name: Pakes, Christopher
Publisher: name: La Trobe
Year: 2025
Subjects: classificationCode: 40
subject: Engineering
classificationCode: 4016
subject: Materials engineering
subject: FOS: Materials engineering
classificationCode: 4018
subject: Nanotechnology
subject: FOS: Nanotechnology
classificationCode: 51
subject: Physical sciences
subject: FOS: Physical sciences
classificationCode: 5104
subject: Condensed matter physics

description: Abstract:The influence of surface topography on phase coherent transport in the two-dimensional (2D) hole band of surface transfer doped hydrogen-terminated (100) diamond is investigated. Low-temperature magneto-conductance measurements were carried out with an applied in-plane magnetic field to quantify the effect of electronic micro-roughness on spin dephasing in the 2D hole band for Hall bar devices with similar transport characteristics, but significantly different topographic roughness. The electronic micro-roughness of the 2D hole band, described by the parameter d2 L, where d is the root-mean-square (rms) fluctuation in the width of the quantum well and L is the correlation length of the fluctuations, is found to increase for surfaces with increased roughness. Fluctuations in the well width likely arise from a locally varying hole carrier density, arising for example from a local variation in the concentration of ionic components in the surface water layer.
Boundary element methods for cohesive thermo-mechanical damage and micro-cracking evolution
Creators: name: Geraci, Giorgio
Publisher: name: Imperial College London
Year: 2018

description: In this thesis, Boundary Element Methods (BEM) are developed for micro-mechanic cohesive non linear problems. Modelling of intergranular and transgranular damage and micro-cracking evolution in polycrystalline materials is presented for different physical engineering problems and loading conditions: mechanical and thermo-mechanical applications are considered in the context of micromechanics. Throughout the thesis the different models are based on a multi-region boundary element approach combined with the dual boundary element formulation. The polycrystalline microstructures are generated with Voronoi tessellations, which well represent statistically the morphology of multi-grain materials; the formulation is able to consider the stochastic effect of each grain’s crystal anisotropy within the whole aggregate. Linear cohesive laws are used for assessing initiation and propagation of damage on intergranular and transgranular surfaces; moreover different physical assumptions on the cohesive models are investigated in order to guarantee energetic independence between mode I and II of fracture as well as inter- and trans-granular damage. Transgranular surfaces are introduced during the numerical simulation, so that the benefits of BEM are maintained and any internal damage propagation is not affected by initial discretization: the nucleation is based on a stress criterion. Upon cohesive failure, non linear frictional contact analysis is introduced. The effect of thermal loading is then introduced to model stress generation and damage propagation due to steady state and transient thermal loading. The cohesive model is updated to take into account the new thermal fields. Damage dependent Fourier’s law is implemented to model cohesive surfaces as heat barriers. Investigations on the effect of grain size, critical fracture energies and loading conditions are done. The presented formulations are shown to provide efficient modelling of the aforementioned engineering applications and their accuracy is compared throughout the thesis with analytical, numerical and experimental findings, where available.
Psittacus aurorae Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Psittaciformes
Psittacidae
Psittacus
Psittacus aurorae

description: Psittacus aurorae [spec. nov.]
P. brachyurus coccineus, alis viridibus nigrisque, rectricibus flavis medietate postica virescentibus.
Psittacus coccineus orientalis, alis ex viridi & nigro variis. Raj. av. 31.
Habitat in India orientali.
Corpus coccineum, magnitudine Turdi. Alarum tectrices virides. Remiges nigrae margine exteriore viridi; subtus purpurascentes. Annulus viridis supra genua. Pedes nigri. Rostrum flavum. Raj.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 100, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Correlation between electronic micro-roughness and surface topography in two-dimensional surface conducting hydrogen-terminated diamond
Creators: name: Yianni, Steve
name: Creedon, Daniel L
name: Schenk, Alex
name: Kaijian Xing
name: Golrokh Akhgar
name: Hoxley, David
name: Ley, Lothar
name: McCallum, Jeffrey C
name: Pakes, Christopher
Publisher: name: La Trobe
Year: 2021
Subjects: Uncategorized

description: No description supplied
Sarg_Ningaloo_Supp.materials
Creators: name: Liu, Xiaoyue P.
name: Wilson-Dennis, Laura
name: J. Fulton, Christopher
name: Fraser, Ceridwen I.
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 310305
subject: Marine and estuarine ecology (incl. marine ichthyology)
classificationCode: 310509
subject: Genomics

description: Sargassum is a ubiquitous habitat-forming macroalgal genus in tropical and sub-tropical seascapes, supporting primary and secondary production that underpins biodiversity and ecosystem function. Periodic canopy growth-decay cycles coupled with sexual reproduction allow Sargassum to engage in multi-scale vectors of propagule dispersal ranging from local spore shedding of attached adults to detached Sargassum wracks and rafts that can potentially travel long distances on prevailing currents. We used genomic methods to reveal the potential implications of these dispersal modes for Sargassum distributed along the Ningaloo World Heritage Area (Western Australia) in terms of connectivity along the known oceanographic features of the Leeuwin and Ningaloo currents. DNA extracted from 500 Sargassum tissue samples across 10 sites (varying from 2 to 164 km apart) were explored with traditional approaches (single gene sequencing of cox3 and rbcL) and higher-resolution genomic tools (SNPs from genotyping-by-sequencing: GBS) to assess population genetic structure across 2º latitude. We found evidence for potential admixture among two putative species (S. polycystum and S. plagiophyllum), and some degree of connectivity was inferred among all sampling sites. Homogeneity north and south of Point Cloates indicated particularly strong connectivity across these regions, and/or recent disturbance and recolonisation events. Our findings indicate that Sargassum communities on the west-coast of Ningaloo are likely to be relatively resilient over medium timescales to local-scale disturbances.
Truncation of the Binary Distribution Function in Globular Cluster Formation
Creators: name: Vesperini, E.
name: Chernoff, D. F.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate a population of primordial binaries during the initial stage of evolution of a star cluster. For our calculations we assume that equal mass stars form rapidly in a tidally truncated gas cloud, that $\sim10$\% of the stars are in binaries and that the resulting star cluster undergoes an epoch of violent relaxation. We study the collisional interaction of the binaries and single stars, in particular, the ionization of the binaries and the energy exchange between binaries and single stars. We find that for large $N$ systems ($N > 10^3$) even the most violent beginning leaves the binary distribution function largely intact. Hence, the binding energy originally tied up in the cloud's protostellar pairs is preserved during the relaxation process and the binaries are available to interact at later times within the virialized cluster.
description: 37 pages, LaTeX, 12 compressed postscript figures, accepted by The Astrophysical Journal
Preface of STACS 2019 Special Issue
Creators: name: Niedermeier, Rolf
name: Paul, Christophe
Publisher: name: Technische Universität Berlin
Year: 2021
Subjects: subject: 510 Mathematik
subject: computer science
subject: algorithmic graph theory
subject: automata theory
subject: linear dynamical systems
subject: parameterized complexity analysis
subject: distributed algorithms

description: This special issue contains five articles which are based on extended abstracts presented at the 35th Symposium on Theoretical Aspects of Computer Science (STACS). The conference was held at the Technical University of Berlin from March 13 to March 16, 2019. The extended abstracts were chosen among the top papers of those which were selected for presentation in a highly competitive peer-review process (after which only 54 papers out of 260 submissions were accepted, putting it among the most competitive conferences in Theoretical Computer Science).
Formation of primordial black holes in an axionlike curvaton model
Creators: name: Ando, Kenta
name: Kawasaki, Masahiro
name: Nakatsuka, Hiromasa
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We performed the detailed analysis of the primordial black hole (PBH) formation mechanism in an axionlike curvaton model with a coupling to inflaton. The phase direction of the complex scalar works as a curvaton and produces enough PBHs to explain the black hole binaries ($\sim 30 M_{\odot}$) observed in the LIGO-Virgo Collaboration or PBHs as dark matter (DM) ($\sim 10^{-12} M_{\odot}$). We examine whether our model satisfies the current constraints on the PBH mass spectrum, the curvature perturbation and the secondarily produced gravitational waves. We also take into account ambiguity about the choice of the window functions and effect of the non-Gaussianity.
description: 15 pages, 5 figures
Barium titanate: photophysics, photocatalysis & the influence of the ferroelectric effect
Creators: name: Morris, Madeleine Rachel
Publisher: name: Imperial College London
Year: 2018

description: Photocatalytic and photoelectrochemical water splitting processes remain hindered by fast recombination of photogenerated electrons and holes. Ferroelectric materials are increasingly being considered to address this issue; their internal electric fields have been shown to spatially separate electrons and holes, and thus should greatly reduce recombination rates. A kinetic understanding of the extent to which electron–hole recombination can be slowed in ferroelectric materials is essential to ascertain if they can play a significant role in achieving higher solar-driven water splitting efficiencies. The focus of this thesis is an experimental investigation of charge carrier dynamics in barium titanate (BaTiO3) to observe the effect of internal electric fields on recombination rates. Time-resolved spectroscopic techniques were used in conjunction with photocatalysis studies to determine whether ferroelectricity can significantly reduce recombination rates and lead to enhanced performance. It is found that, although the transient absorption spectrum of ferroelectric BaTiO3 is similar to previously reported metal oxides, the carrier lifetimes are significantly longer, indicating the potential for ferroelectrics to be used in devices limited by fast electron–hole recombination. In the first results chapter, the transient absorption spectrum of single crystal BaTiO3 is characterised under inert atmosphere over two timescales: femtosecond–nanosecond and microsecond–second. Absorption signals due to photogenerated holes and electrons are identified using electron and hole scavengers, respectively. Comparisons are drawn between BaTiO3 and other single crystal, but non-ferroelectric, metal oxides. It is found that, on timescales relevant for water oxidation, lifetimes in BaTiO3 are at least an order of magnitude longer. In the second results chapter, the origin of long carrier lifetimes in ferroelectric BaTiO3 is explored. When the polarisation is switched off by both temperature and nanostructuring, carrier lifetimes decrease by four orders of magnitude. Recombination rates in BaTiO3 exhibit a much stronger temperature dependence than other metal oxides, which is rationalised by considering the temperature dependence of the spontaneous polarisation. The third results chapter investigates the photocatalytic performance of BaTiO3 nanopowders. It is found that, in the presence of an electron scavenger, BaTiO3 photogenerated holes are reactive and can oxidise water to produce oxygen. Transient and photoinduced absorption spectroscopies indicated that hole accumulation in a BaTiO3 sample with a higher tetragonal (ferroelectric) content, which translates to higher rates of oxygen evolution. The final results chapter probes the influence of a ferroelectric BaTiO3 substrate on α-Fe2O3 thin films. Preliminary data suggests the internal field can penetrate through the film and slow electron–hole recombination rates in α-Fe2O3.
The Neutron Star and Black Hole Initial Mass Function
Creators: name: Timmes, F. X.
name: Woosley, S. E.
name: Weaver, T. A.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using recently calculated models for massive stellar evolution and supernovae coupled to a model for Galactic chemical evolution, neutron star and black hole birth functions (number of neutron stars and black holes as a function of their mass) are determined for the Milky Way Galaxy. For those stars that explode as Type II supernovae, the models give birth functions that are bimodal with peaks at 1.27 and 1.76 M\sun \ and average masses within those peaks of 1.28 and 1.73 M\sun. For those stars that explode as Type Ib there is a narrower spread of remnant masses, the average being 1.32 M\sun, and less evidence for bimodality. These values will be increased, especially in the more massive Type II supernovae, if significant accretion continues during the initial launching of the shock, and the number of heavier neutron stars could be depleted by black hole formation. The principal reason for the dichotomy in remnant masses for Type II is the difference in the presupernova structure of stars above and below 19 M\sun, the mass separating stars that burn carbon convectively from those that produce less carbon and burn radiatively. The Type Ib's and the lower mass group of the Type II's compare favorably with measured neutron star masses, and in particular to the Thorsett et al. (1993) determination of the average neutron star mass in 17 systems; 1.35 $\pm$ 0.27 M\sun. Variations in the exponent of a Salpeter initial mass function are shown not to affect the locations of the two peaks in the distribution function, but do affect their relative amplitudes. Sources of uncertainty, in particular placement of the mass cut and sensitivity to the explosion energy, are discussed, and estimates of the total number of neutron stars and black holes in the Galaxy are given. Accretion induced collapse should give a unique gravitational mass of 1.27
description: 32 pages including 7 figures. uuencoded compressed postscript
Homotopy Type of Moduli Spaces of G-Higgs Bundles and Reducibility of the Nilpotent Cone
Creators: name: Florentino, C.
name: Gothen, P. B.
name: Nozad, A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14H60, 32L05

description: Let $G$ be a real reductive Lie group, and $H^{\mathbb{C}}$ the complexification of its maximal compact subgroup $H\subset G$. We consider classes of semistable $G$-Higgs bundles over a Riemann surface $X$ of genus $g\geq2$ whose underlying $H^{\mathbb{C}}$-principal bundle is unstable. This allows us to find obstructions to a deformation retract from the moduli space of $G$-Higgs bundles over $X$ to the moduli space of $H^{\mathbb{C}}$-bundles over $X$, in contrast with the situation when $g=1$, and to show reducibility of the nilpotent cone of the moduli space of $G$-Higgs bundles, for $G$ complex.
description: 14 pages