cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
ANÁLISE DE PESQUISAS CIENTÍFICAS SOBRE TECNOLOGIA EDUCACIONAL E EDUCAÇÃO A DISTÂNCIA REALIZADAS NO MESTRADO PROFISSIONAL EM EDUCAÇÃO E MESTRADO EM DESENVOLVIMENTO HUMANO DA UNIVERSIDADE DE TAUBATÉ.
Creators: name: De Abreu E Silva, Juliano Ferri
name: Aranha De Souza, Mariana
Publisher: name: Internet Latent Corpus Journal
Year: 2022

description: Resumo: Este artigo faz, inicialmente, uma pesquisa no banco de dissertações do Mestrado em Educação e Mestrado em Desenvolvimento Humano da Universidade de Taubaté, entre os anos de 2012 e 2021, para identificar quais trabalhos contemplam, em seu título, ou seja, tem como importância central, os descritores “EAD”, “Educação a distância”, “Tecnologia da Informação e da Comunicação” e “TIC”. O banco de dados dos dois programas somam 299 pesquisas. Dessas quase três centenas, 10 apresentavam um dos descritores no título. Em uma segunda etapa, este artigo faz uma análise das 10 dissertações selecionadas no que diz respeito aos objetivos, metodologia e resultados. Como síntese, a partir do estudo, observou-se um aumento significativo, nos últimos anos, do interesse pelo tema educação a distância e tecnologia da educação nas produções científicas, e concluiu-se que, apensar do uso de tecnologias em sala de aula ainda ser tímido ou pouco institucionalizado, principalmente antes da pandemia causada pela Covid-19, há um assentimento de que a tecnologia digital não está mais dissociada da sala de aula e de que é preciso que ela seja cada vez mais experimentada, pesquisada e incorporada à dinâmica de sala de aula.
description: Internet Latent Corpus Journal, vol. 12 n.º 2 (2022): AUTOMAÇÃO DOS SERVIÇOS EDUCACIONAIS E O FUTURO DAS UNIVERSIDADES
Tracer diffusion in active suspensions
Creators: name: Burkholder, Eric W.
name: Brady, John F.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the diffusion of a Brownian probe particle of size $R$ in a dilute dispersion of active Brownian particles (ABPs) of size $a$, characteristic swim speed $U_0$, reorientation time $τ_R$, and mechanical energy $k_s T_s = ζ_a U_0^2 τ_R /6$, where $ζ_a$ is the Stokes drag coefficient of a swimmer. The probe has a thermal diffusivity $D_P = k_B T/ζ_P$, where $k_B T$ is the thermal energy of the solvent and $ζ_P$ is the Stokes drag coefficient for the probe. When the swimmers are inactive, collisions between the probe and the swimmers sterically hinder the probe's diffusive motion. In competition with this steric hindrance is an enhancement driven by the activity of the swimmers. The strength of swimming relative to thermal diffusion is set by $Pe_s = U_0 a /D_P$. The active contribution to the diffusivity scales as $Pe_s^2$ for weak swimming and $Pe_s$ for strong swimming, but the transition between these two regimes is nonmonotonic. When fluctuations in the probe motion decay on the time scale $τ_R$, the active diffusivity scales as $k_s T_s /ζ_P$: the probe moves as if it were immersed in a solvent with energy $k_s T_s$ rather than $k_B T$.
description: 5 pages, 3 figures, submitted for publication. Please contact authors regarding supplemental information
INCLUSÃO EM CONTEXTO EDUCATIVO
Creators: name: Pereira Junior, Marcus Vinicius De Paula
name: Martins Pereira, Stelya Marusska Diniz Côrte-Real
name: Pereira, Ana Mateus João
Publisher: name: Internet Latent Corpus Journal
Year: 2022

description: O fenómeno da inclusão tem atravessado as sociedades de diversas formas. Ao adentrar o contexto educativo, nomeadamente espaços formais e não-formais de ensino, importa considerar que a Educação tem vindo a ampliar o território de possibilidades ao se pensar em inclusão, indo além da visão circunscrita ao universo de pessoas com dificuldades intelectuais e desenvolvimentais. Tais contributos levam à ressignificação do conceito de inclusão, pensando-se esta como um processo que abarca uma pluralidade de questões e que valorizam diversos modos de subjetivação. A presente investigação teve como objetivo responder à questão: Que metodologias têm vindo a ser empregues em teses de doutoramento no âmbito da inclusão em contexto educativo? Para esse fim, conduziu-se uma revisão sistemática nos Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) por teses de doutoramento publicadas nos anos 2020 e 2021, focando-se nas metodologias utilizadas e que investigaram o processo de inclusão em contexto educativo. Como corpus de análise, foram selecionadas treze teses de doutoramento desenvolvidas em instituições sediadas em Portugal e em contextos sociais distintos (Angola, Brasil, Moçambique e Portugal). A partir da análise do corpus, concluímos que as investigações desenvolvidas são maioritariamente de natureza qualitativa, com foco na diversidade funcional e neurodiversidade, utilizando-se exclusivamente uma metodologia de estudo de caso com uma diversidade de técnicas e instrumentos de recolha de dados, incidindo maioritariamente sobre docentes do ensino básico e secundário e gestores escolares. Assim, este estudo permitiu a reflexão sobre como urge se pensar inclusão em contexto educativo de forma mais ampla e abrangente.
description: Internet Latent Corpus Journal, vol. 12 n.º 2 (2022): AUTOMAÇÃO DOS SERVIÇOS EDUCACIONAIS E O FUTURO DAS UNIVERSIDADES
Modulated phases in a three-dimensional Maier-Saupe model with competing interactions
Creators: name: Bienzobaz, P. F.
name: Xu, Na
name: Sandvik, Anders W.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: This work is dedicated to the study of the discrete version of the Maier-Saupe model in the presence of competing interactions. The competition between interactions favoring different orientational ordering produces a rich phase diagram including modulated phases. Using a mean-field approach and Monte Carlo simulations, we show that the proposed model exhibits isotropic and nematic phases and also a series of modulated phases that meet at a multicritical point, a Lifshitz point. Though the Monte Carlo and mean-field phase diagrams show some quantitative disagreements, the Monte Carlo simulations corroborate the general behavior found within the mean-field approximation.
description: 10 pages, 8 figures, title modified, minor typos corrected, improved interpretation of results, published version
A ATUAÇÃO DO COORDENADOR PEDAGÓGICO DA EDUCAÇÃO INFANTIL: O QUE DIZEM AS PESQUISAS?
Creators: name: Meireles De Deus, Maria Do Carmo
name: De Almeida, Patrícia Cristina Albieri
Publisher: name: Internet Latent Corpus Journal
Year: 2022

description: Este artigo apresenta uma revisão da literativa sobre o tema da coordenação pedagógica na educação infantil. Foram utilizados como corpus de análise as dissertações e teses desenvolvidas nos programas de pós-graduação em educação stricto sensu disponíveis na Biblioteca Digital de Teses e Dissertações, no período de 2011 a 2021. A intenção foi investigar se e como as pesquisas analisam a atuação do/a coordenador/a pedagógico/a (CP) na educação infantil, bem como as contribuições de sua ação para o desenvolvimento profissional dos/as professores/as que atuam nesse segmento. Foram localizados e analisados 24 dissertações e 1 tese, evidenciando que há poucos estudos que abordam a temática, o que justifica sua relevância. Destacam-se nos achados da revisão que, no conjunto dos trabalhos, o que se sobressai sobre a atuação da CP diz respeito: a orientação, rotina, desafios, formação continuada, organização e acompanhamento das práticas pedagógicas dos professoras; a articulação e integração do processo de formação continuada e em serviço dos/as professores/as que acompanha. Os resultados sinalizam que apesar de os estudos terem como foco o/a CP que atua na educação infantil, poucos discutem e analisam as especificidades da sua atuação nesse segmento de ensino. Para uma compreensão mais ampla sobre a atuação da coordenação pedagógica na educação infantil, bem como as suas contribuições para o desenvolvimento profissional dos/as professores/as que atuam nesse segmento, é imprescindível empreender uma discussão sobre as práticas de acompanhamento e as ações que compõem a rotina da coordenação pedagógica que podem favorecer o aprimoramento das práticas docentes na Educação Infantil.
description: Internet Latent Corpus Journal, vol. 12 n.º 2 (2022): AUTOMAÇÃO DOS SERVIÇOS EDUCACIONAIS E O FUTURO DAS UNIVERSIDADES
Shear bands as manifestation of a criticality in yielding amorphous solids
Creators: name: Parisi, Giorgio
name: Procaccia, Itamar
name: Rainone, Corrado
name: Singh, Murari
Publisher: name: arXiv
Year: 2017
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Amorphous solids increase their stress as a function of an applied strain until a mechanical yield point whereupon the stress cannot increase anymore, afterwards exhibiting a steady state with a constant mean stress. In stress controlled experiments the system simply breaks when pushed beyond this mean stress. The ubiquity of this phenomenon over a huge variety of amorphous solids calls for a generic theory that is free of microscopic details. Here we offer such a theory: the mechanical yield is a thermodynamic phase transition, where yield occurs as a spinodal phenomenon. At the spinodal point there exists a divergent correlation length which is associated with the system-spanning instabilities (known also as shear bands) which are typical to the mechanical yield. The theory, the order parameter used and the correlation functions which exhibit the divergent correlation length are universal in nature and can be applied to any amorphous solids that undergo mechanical yield.
description: 12 pages, 15 figures - Submitted to PNAS. Minor modifications with respect to v1
LIDERANÇA E GESTÃO DE ESCOLAS EM PORTUGAL
Creators: name: Sérgio Da Silva, Jennifer Alejandra
name: Pinto, Márcia Honório Portella
Publisher: name: Internet Latent Corpus Journal
Year: 2022

description: O presente artigo teve como foco de análise os resultados divulgados pela Inspeção-Geral da Educação e da Ciência (IGEC), em contexto de avaliação externa de escolas da região centro de Portugal, com especial incidência no terceiro ciclo avaliativo e, especificamente, no que concerne ao domínio da Liderança e Gestão. Uma análise dos relatórios globais da atividade da avaliação externa, disponibilizados na página eletrónica da IGEC, possibilitou aferir informações de treze agrupamentos de escolas de uma determinada região, avaliados no ano letivo 2019/2020, tendo sido estabelecidas, neste estudo, quatro categorias de análise: i. Classificações obtidas; ii. Pontos fortes, iii. Áreas de melhoria e iv. Avaliação da liderança pelo pessoal docente e não-docente. Tratou-se de um estudo de natureza qualitativa e de paradigma interpretativo. Recorreu-se à técnica de análise de conteúdo no tratamento dos dados. Os resultados demonstraram que existe um reconhecimento do trabalho consignado às lideranças e à gestão, sendo que os pontos fortes se sobrepõem às áreas de melhoria. Mereceu especial atenção, neste estudo, a visão que o pessoal docente e não docente tem das lideranças das organizações escolares.
description: Internet Latent Corpus Journal, vol. 12 n.º 2 (2022): AUTOMAÇÃO DOS SERVIÇOS EDUCACIONAIS E O FUTURO DAS UNIVERSIDADES
Ultralight scalars and resonances in black-hole physics
Creators: name: Fujita, Ryuichi
name: Cardoso, Vitor
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Ultralight degrees of freedom coupled to matter lead to resonances, which can be excited when the Compton wavelength of the field equals a dynamical scale in the problem. For binaries composed of a star orbiting a supermassive black hole, these resonances lead to a smoking-gun effect: a periastron distance which {\it stalls}, even in the presence of gravitational-wave dissipation. This effect, also called a {\it floating orbit}, occurs for generic equatorial but eccentric orbits and we argue that finite-size effects are not enough to suppress it.
description: 10 pages, 5 figures
Nanomaterials Science & Engineering, Volume 4, Number 1, December 2022
Creators: name: Bdikin, Igor
name: Marques, Paula
name: Fagg, Duncan Paul
name: Gonçalves, Gil
Publisher: name: Nanomaterials Science & Engineering
Year: 2022

description: Nanomaterials Science & Engineering, vol. 4 n.º 1 (2022): Nanomaterials Science & Engineering
The Effect of LULC Change on Stream Flow and Sediment Concentration: Case of Gilgel Abay watershed, upper Blue Nile basin, Ethiopia
Creators: name: Gidey, Ephrem
name: Dubale, Yimegnushal W.
name: Dersseh, Minychl G.
name: Abebe, Wubneh B.
Publisher: name: Poly Journal of Engineering and Technology (PJET)
Year: 2024

description: Hydrological alterations were happening globally because of anthropogenic effects like land use changes by the conversion of lands to industrial areas, urbanization, and agricultural lands. The main objective of this study was to determine the effect of land use/ land cover change on stream flow and sediment concentration in the Gilgel Abay watershed. The observed streamflow and sediment concentration data was generated using flow and sediment rating curves of the Gilgel Abay River. Historical land use/ land cover was generated using satellite images by supervised classification technique using maximum likelihood algorithm. SWAT2012 model was used to generate stream flow and sediment concentration of Gilgel Abay river and the SWAT-CUP was used for calibration and validation. The land use/ land cover of three different years 2000, 2010, and 2020 were used as input for modeling the stream flow and sediment concentration. The result showed that cultivated land and grassland decreased by 15.48% and 4.13% respectively, whereas urban area, shrub land and forest increased by 12.13%, 3.52%, and 2.72% respectively. Over 20 years period (2000-2020), stream flow and sediment concentration decreased by 2.53m3/s and 4.41mg/l respectively with NSE > 0.65, R2 > 0.76, and RSR < 0.08 values for the daily stream flow. The base flow has been decreased because of the eucalyptus plantation and irrigation expansion. However, the sediment concentration has been decreased because of the increase in the forest and shrub land. This research helps decision-makers and stakeholders to plan and manage land and water resources more effectively.
description: Poly Journal of Engineering and Technology (PJET), Vol 2 No 2 (2024): Articles in press
Parcellation of Visual Cortex on high-resolution histological Brain Sections using Convolutional Neural Networks
Creators: name: Spitzer, Hannah
name: Amunts, Katrin
name: Harmeling, Stefan
name: Dickscheid, Timo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Microscopic analysis of histological sections is considered the "gold standard" to verify structural parcellations in the human brain. Its high resolution allows the study of laminar and columnar patterns of cell distributions, which build an important basis for the simulation of cortical areas and networks. However, such cytoarchitectonic mapping is a semiautomatic, time consuming process that does not scale with high throughput imaging. We present an automatic approach for parcellating histological sections at 2um resolution. It is based on a convolutional neural network that combines topological information from probabilistic atlases with the texture features learned from high-resolution cell-body stained images. The model is applied to visual areas and trained on a sparse set of partial annotations. We show how predictions are transferable to new brains and spatially consistent across sections.
description: Accepted for oral presentation at International Symposium of Biomedical Imaging (ISBI) 2017
Dark ages reionization & galaxy formation simulation XII: Bubbles at dawn
Creators: name: Geil, Paul M.
name: Mutch, Simon J.
name: Poole, Gregory B.
name: Duffy, Alan R.
name: Mesinger, Andrei
name: Wyithe, J. Stuart B.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Direct detection of regions of ionized hydrogen (HII) has been suggested as a promising probe of cosmic reionization. Observing the redshifted 21-cm signal of hydrogen from the epoch of reionization (EoR) is a key scientific driver behind new-generation, low-frequency radio interferometers. We investigate the feasibility of combining low-frequency observations with the Square Kilometre Array and near infra-red survey data of the Wide-Field Infrared Survey Telescope to detect cosmic reionization by imaging HII bubbles surrounding massive galaxies during the cosmic dawn. While individual bubbles will be too small to be detected, we find that by stacking redshifted 21-cm spectra centred on known galaxies, it will be possible to directly detect the EoR at $z \sim 9-12$, and to place qualitative constraints on the evolution of the spin temperature of the intergalactic medium (IGM) at $z \geq 9$. In particular, given a detection of ionized bubbles using this technique, it is possible to determine if the IGM surrounding them is typically in absorption or emission. Determining the globally-averaged neutral fraction of the IGM using this method will prove more difficult due to degeneracy with the average size of HII regions.
description: 14 pages, 11 figures, 2 tables, published in MNRAS. Updated to match published version. Additional results and comments added from previous version. All other results and conclusions remain unchanged
Conductivity and transmittance enhancement of PEDOT:PSS thin films by graphene addition
Creators: name: Mabilia, Felipe Teixeira
name: Wang, Shu Hui
Publisher: name: Nanomaterials Science & Engineering
Year: 2022

description: Compared to conventional inorganic semiconductors, organic semiconductors present several advantages, such as cost-effectiveness, mechanical toughness, synthesis versatility and simple production set-ups, among others. In this work, we have prepared conductive solid films based on multilayer graphene (mG) and poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) from liquid dispersions. mG-10.6 wt% dispersion in isopropanol was prepared in two steps. In the first step, graphite was submitted to liquid phase exfoliation in N-methyl-pyrrolidone (NMP) (5.3 wt % of mG), then, in the following step, NMP was removed by precipitation and mG redispersed, using polyethyleneimine and acetic acid-1M in isopropanol, respectively. The nanocomposite films were prepared from dispersions of mG and PEDOT:PSS, by spin-coating, to reach pre-established solid concentrations of 10.2 wt % and 49.9 wt % of mG. The optical and electrical properties of the thin films were characterized using UV-Visible Spectroscopy and an adapted four-probe resistance measurement, while Raman Spectroscopy, Scanning Electron Microscopy (SEM), and Atomic Force Microscopy (AFM) were applied to analyze their morphological features. The thin films showed high transmittances, even multilayer, upholding more than 85% for three-layer films, similar to that found in the single-layer ones. The sheet resistances of the films were detected in the range of a few hundreds of Ω/□. Both transmittance and sheet resistance of the films were improved when compared to those found in pristine mG and pristine PEDOT:PSS, which is due to higher charge mobility in the nanocomposite. Raman Spectroscopy showed the formation of the composite by π-π interaction and the conformational change in the polymer chains was confirmed by peak shift. SEM analysis showed that the films are largely homogeneous, and mG is uniformly dispersed, nevertheless the mG platelets appear to be standing up from the film (AFM). The phase image (AFM) allows the differentiation between rigid and soft regions, i.e., mG/PEDOT and PSS, respectively. Semiconductive nanocomposites having high load of mG were successfully prepared, and their resulting electrical and optical properties make them suitable to be used, e.g., as transparent electrodes, in the fabrication of displays, lighting devices and photovoltaic materials or as multipurpose conductive inks.
description: Nanomaterials Science & Engineering, vol. 4 n.º 1 (2022): Nanomaterials Science & Engineering
Synthesis and structural Characterization of Cu Substituted SrCoO3-δ Perovskite Oxides
Creators: name: Djoudi, Lynda
name: Bourmal, Belkis
name: Omari, Mahmoud
Publisher: name: Nanomaterials Science & Engineering
Year: 2022

description: In this work, SrCo1-xCuxO3-δ perovskite-type metal oxides (x = 0.00, 0.1, 0.2, 0.3) were prepared by sol-gel method using citric acid as chelating agent. We have focused on examining the effect of partial substitution of cobalt by copper on the phase purity and crystallinity of the end products. The samples obtained after calcination at 900°C for 6h were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (IRTF) and powder size distribution (PSD). XRD patterns indicate that a stable perovskite phase with rhombohedral system has been obtained for all the compositions with no detectable secondary phase where the crystallite size ranges from 48.74 to 53.49 nm. The crystallite size decreases with increasing the copper amount. The grain size of oxides as determined from laser diffraction ranges from 0.213 to 0.307 micron, this result reveals that agglomerates are present in the suspension. Infrared spectroscopy shows a broad characteristic band of absorption observed around 581 cm-1 was attributed to the BO (Co-O, Cu-O) stretching vibration.This band is characteristic of the perovskite structure ABO3.
description: Nanomaterials Science & Engineering, vol. 4 n.º 1 (2022): Nanomaterials Science & Engineering
Tunnel magnetoresistance of granular superparamagnetic and ferrimagnetic structures
Creators: name: Suchaneck, Gunnar
Publisher: name: Nanomaterials Science & Engineering
Year: 2022

description: Applicable magnetic sensors based on nanogranular ferromagnetic materials were developed already more than 25 years ago. Since the then, nanotechnology has advanced significantly. New methods for manufacturing agglomerated core-shell structures have emerged. This opens up new possibilities of sensor fabrication and an opportunity for reassessment of the electric and magnetic properties of ideal granular structures. This work represents a comprehensive study of the intergranular resistivity, tunnel magnetoresistance and magnetic field sensibility of superparamagnetic and ferro(ferri)magnetic granular materials. Starting with the tunnel resistance of a granular metal network in which the grains are interconnected by insulating barriers, the tunnel magnetoresistance is calculated under consideration of the temperatures dependencies of magnetization, spin polarization and the magnetic flux dependencies of magnetization and tunnelling barrier height. Granular, superparamagnetic materials show a higher magnetic field sensitivity than ferromagnetic ones. They show a lower temperature coefficient of the tunnel magnetoresistance. Owing to their small magnetic response a higher temperature, superparamagnetic ferrimagnetic oxides are not suitable for application at room temperature. Ferromagnetic nanoparticles possess a high field sensitivity only in a small region of 0.1 to 0.5 T.
description: Nanomaterials Science & Engineering, vol. 4 n.º 1 (2022): Nanomaterials Science & Engineering
Characterisation and evaluation of pro-resolving G protein-coupled receptors (GPCRs) in resolution of inflammation
Creators: name: PARK, JULIA SOYOUNG
Publisher: name: Monash University
Year: 2024
Subjects: classificationCode: 320404
subject: Cellular immunology
classificationCode: 321405
subject: Pharmaceutical sciences

description: This thesis examines the actions of a special set of proteins in our body, called GPCRs, which play an essential role in resolving inflammation in our body. It systematically profiles the quantity of the GPCRs on the immune cells and their interaction with other agents in the cells. The results of this thesis may be of help in targeting the GPCRs to develop new drugs for treating inflammatory diseases.
Synthesis and characterization of multiferroic magnetoelectric ceramic composites
Creators: name: Coondoo, Indrani
Publisher: name: Nanomaterials Science & Engineering
Year: 2022

description: Ceramic composites with composition (1−x)[Ba0.85Ca0.15Zr0.1Ti0.9O3] − x[Ni0.7Zn0.3Fe2O4], (0 ≤ x ≤ 100 wt%) were prepared using solid state route. Structural and microstructural analysis confirmed the coexistence of ferroelectric (BCZT) and magnetostrictive (NZFO) phases without any detectable presence of impurity/secondary phases. The composites exhibited ferroelectric, magnetic properties and magnetoelectric coupling responses. Highest coupling coefficient was obtained for composite with 50 wt% NZFO.
description: Nanomaterials Science & Engineering, vol. 4 n.º 1 (2022): Nanomaterials Science & Engineering
An assessment of the low-lying excitation energies and triplet instabilities of organic molecules with an ab initio Bethe-Salpeter equation approach
Creators: name: Rangel, Tonatiuh
name: Hamed, Samia M.
name: Bruneval, Fabien
name: Neaton, Jeffrey B.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The accurate prediction of singlet and triplet excitation energies is of significant fundamental interest and is critical for many applications. An area of intense research, most calculations of singlet and triplet energies use time-dependent density functional theory (TDDFT) in conjunction with an approximate exchange-correlation functional. In this work, we examine and critically assess an alternative method for predicting low-lying neutral excitations with similar computational cost, the ab initio Bethe-Salpeter equation (BSE) approach, and compare results against high-accuracy wavefunction-based methods. We consider singlet and triplet excitations of 27 prototypical organic molecules, including members of Thiel's set, the acene series, and several aromatic hydrocarbons exhibiting charge-transfer-like excitations. Analogous to its impact in TDDFT, we find that the Tamm-Dancoff approximation (TDA) overcomes triplet instabilities in the BSE approach, improving both triplet and singlet energetics relatively to higher level theories. Finally, we find that BSE-TDA calculations built on good DFT starting points, such as those utilizing optimally-tuned range-separated hybrid functionals, can yield accurate singlet and triplet excitation energies for gas-phase organic molecules.
Hydrogeomorphic Dynamics of Gumara River at the Lacustrine Plain of Lake Tana (Ethiopia)
Creators: name: Dersseh, Minychl G.
name: Gidey, Ephrem
name: Tilahun, Seifu A.
Publisher: name: Poly Journal of Engineering and Technology (PJET)
Year: 2024

description: The role of river bank erosion to sediment yield in alluvial rivers has not received enough attention. The main objective of this study is therefore to quantify upland erosion, channel erosion and deposition from a 30km stretch of the alluvial River, in the lacustrine plain of Lake Tana. The upland erosion was estimated from the upper gauging sites at Wanzaye where event data of stream flow and sediment concentration in 2012 for three months (June 2 to Sep 2) were collected. In-channel deposition and hydrogeomorphic dynamics of the channel were analyzed from aerial photograph analysis of three sets of images (1957, 1982 and 2014). Long term average contribution of bank erosion to the total sediment load at the outlet of the stretch, were analyzed from surface area changes of the image analysis. The result of sediment analysis showed that, the sediment yield decreases from the upper reach to the lower reach during storm periods. The sediment load at the upper reach of Gumara River was 5.9 million tons (i.e.48 t ha-1) which is higher than the lower reach with 5 million tons (i.e., 31 t ha-1) during maximum flows. The result indicated that the main source of sediment during storm periods is the upper catchment and 0.9 million tons of sediment were deposited between the two gauging stations. During the non-storm periods, the sediment load at the upper gauging sites was 0.96 million tons and at the lower gauging sites was 2.3 million tons, indicating that 1.34 million tons of sediment loads is mobilized from the river channel within the period. The image analysis showed that the surface area of the river channel has increased by 3.7 ha within 57 years. The study revealed that the major source of sediment for the alluvial river of Gumara is the upper catchment and channel erosion is not the major contributor to the total sediment load but in-channel deposition is significant.
description: Poly Journal of Engineering and Technology (PJET), Vol 2 No 2 (2024): Articles in press
Systematic review and meta-analysis of interventions to reduce mathematics anxiety in adult populations
Creators: name: Willis, Royce
name: Tindle, Richard
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Teacher Education and Professional Development
subject: Education
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: Adult and Continuing Education
subject: adults
subject: intervention
subject: mathematics anxiety
subject: meta-analysis
subject: systematic review

description: This is a registration of a systematic review (and meta-analysis if there is sufficient homogeneity of design and outcomes) aimed at answering the following: How effective are interventions at reducing mathematics anxiety in adult populations? Which interventions are most effective at reducing mathematics anxiety in adult populations?
Additional file 1 of A robust, deep learning-based analysis of time-domain signals for NMR spectroscopy
Creators: name: Han, Kyungdoe
name: Kim, Eunhee
name: Ryu, Kyoung-Seok
name: Lee, Donghan
Publisher: name: figshare
Year: 2025
Subjects: subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences

description: Additional file 1.
Circular Wilson loops in defect Conformal Field Theory
Creators: name: Aguilera-Damia, Jeremias
name: Correa, Diego H.
name: Giraldo-Rivera, Victor I.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a D3-D5 system dual to a conformal field theory with a codimension-one defect that separates regions where the ranks of the gauge groups differ by $k$. With the help of this additional parameter, as observed by Nagasaki, Tanida and Yamaguchi, one can define a double scaling limit in which the quantum corrections are organized in powers of $λ/k^2$, which should allow to extrapolate results between weak and strong coupling regimes. In particular we consider a radius $R$ circular Wilson loop placed at a distance $L$, whose internal space orientation is given by an angle $χ$. We compute its vacuum expectation value and show that, in the double scaling limit and for small $χ$ and small $L/R$, weak coupling results can be extrapolated to the strong coupling limit.
description: 24 pages
Right-handed neutrinos: dark matter, lepton flavor violation and leptonic collider searches
Creators: name: Chekkal, Meziane
name: Ahriche, Amine
name: Hammou, Amine Bouziane
name: Nasri, Salah
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine lepton flavor violating (LFV) interactions for heavy right-handed neutrinos that exist in most of the standard model extensions that address dark matter (DM) and neutrino mass at the loop level. In order to probe the collider effect of these LFV interactions, we impose the assumption that the model parameters give the right values of the DM relic density and fulfill the constraints from the LFV processes $\ell_α\rightarrow\ell_βγ$ and $\ell_α\rightarrow3\ell_β$. We also investigate the possibility of probing these interactions, and hence the right-handed neutrino, at leptonic colliders through different final state signatures.
description: 21 pages, 17 figures & 4 tables, matches published version
Monte Carlo study of four-dimensional self-avoiding walks of up to one billion steps
Creators: name: Clisby, Nathan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study self-avoiding walks on the four-dimensional hypercubic lattice via Monte Carlo simulations of walks with up to one billion steps. We study the expected logarithmic corrections to scaling, and find convincing evidence in support the scaling form predicted by the renormalization group, with an estimate for the power of the logarithmic factor of 0.2516(14), which is consistent with the predicted value of 1/4. We also characterize the behaviour of the pivot algorithm for sampling four-dimensional self-avoiding walks, and conjecture that the probability of a pivot move being successful for an $N$-step walk is $O([ \log N ]^{-1/4})$.
description: 10 pages, 8 figures
Phase limitations of Zames-Falb multipliers
Creators: name: Wang, Shuai
name: Carrasco, Joaquin
name: Heath, William P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: Phase limitations of both continuous-time and discrete-time Zames-Falb multipliers and their relation with the Kalman conjecture are analysed. A phase limitation for continuous-time multipliers given by Megretski is generalised and its applicability is clarified; its relation to the Kalman conjecture is illustrated with a classical example from the literature. It is demonstrated that there exist fourth-order plants where the existence of a suitable Zames-Falb multiplier can be discarded and for which simulations show unstable behavior. A novel phase-limitation for discrete-time Zames-Falb multipliers is developed. Its application is demonstrated with a second-order counterexample to the Kalman conjecture. Finally, the discrete-time limitation is used to show that there can be no direct counterpart of the off-axis circle criterion in the discrete-time domain.
Shifting sands: tracking erosion trends in middens using RPA and 3D models
Creators: name: Channing, Justine
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: Shell midden sites are a common archaeological record of human coastal resource use and important palaeontological records of species abundance and ecological changes over time, but coastal middens are vulnerable to damage by natural and anthropogenic processes. In Sydney, shell midden sites provide a unique historical record of human impact on local ecology, offering insights into the effects of urban development on species since European settlement. As protected heritage features, excavation of midden sites is limited, and remedial preservation impedes study. Here I show that images taken by remotely piloted aircraft (RPAs) can be used to create 3D models of middens for monitoring erosion and utilised to successfully calculate site-scale volumetric and morphological changes over time. Orthophotographic images are used to analyse the eroding margin of middens to quantify shell diversity and abundance, and build a digital map of the midden contents, preserving its record without excavation. This project demonstrates an inexpensive means of quantifying midden erosion for monitoring, protection, and archiving, and investigates what midden characteristics are linked to higher erosion rates using entirely non-contact data. New sensitivities to cultural heritage limit destructive analyses. As a result, non-destructive technologies should be key tools for future studies of middens internationally.
ESM 2. Hosts (Chiroptera) and their respective ectoparasitic flies (Diptera: Nycteribiidae and Streblidae) recorded in northeastern Brazil.
Creators: name: Barbier, Eder
name: Bernard, Enrico
Publisher: name: figshare
Year: 2022
Subjects: Ecology not elsewhere classified

description: Data from: From the Atlantic Forest to the borders of Amazonia: species richness, distribution, and host association of ectoparasitic flies (Diptera: Nycteribiidae and Streblidae) in northeastern Brazil.
Reweighting complex Langevin trajectories
Creators: name: Bloch, Jacques
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Although the complex Langevin method can solve the sign problem in simulations of theories with complex actions, the method will yield the wrong results if known validity conditions are not satisfied. We present a novel method to compute observables for a target ensemble by reweighting complex trajectories generated with the complex Langevin method for an auxiliary ensemble having itself a complex action. While it is imperative that the validity conditions be satisfied for the auxiliary ensemble, there are no such requirements for the target ensemble. This allows us to enlarge the applicability range of the complex Langevin method. We illustrate this at the hand of a one-dimensional partition function and two-dimensional strong-coupling QCD.
description: 5 pages, 2 figures; as published in PRD; including an enhanced comparison between reweighted complex Langevin and phase-quenched reweighting in the results section
Theory of Multiwave Mixing within the Superconducting Kinetic-Inductance Traveling-Wave Amplifier
Creators: name: Erickson, Robert P.
name: Pappas, David P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Physics (physics.class-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We present a theory of parametric mixing within the coplanar waveguide (CPW) of a superconducting nonlinear kinetic-inductance traveling-wave (KIT) amplifier engineered with periodic dispersion loadings. This is done by first developing a metamaterial band theory of the dispersion-engineered KIT using a Floquet-Bloch construction and then applying it to the description of mixing of the nonlinear RF traveling waves. Our theory allows us to calculate signal gain vs. signal frequency in the presence of a frequency stop gap, based solely on loading design. We present results for both three-wave mixing (3WM), with applied DC bias, and four-wave mixing (4WM), without DC. Our theory predicts an intrinsic and deterministic origin to undulations of 4WM signal gain with signal frequency, apart from extrinsic sources, such as impedance mismatch, and shows that such undulations are absent from 3WM signal gain achievable with DC. Our theory is extensible to amplifiers based on Josephson junctions in a lumped LC transmission line (TWPA).
description: 52 pages, 9 figures, submitted to PRB Nov. 2016, presented at the ASC Sept. 2016
Students Perception of Corrupt Practices, Impact in learning and Implications for University Governance in Nigeria.pdf
Creators: name: Orji, Evelyn   Ijeoma
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 390303
subject: Higher education
classificationCode: 390306
subject: Secondary education
classificationCode: 390301
subject: Continuing and community education

description: Corruption is a phenomenon that has assumed divers, forms and have pervaded deeply into the fabric of our society. The consequences are manifest in nearly all our social systems, the political, social, economic and educational. This paper therefore undertook an exploratory study that focused on students’ perception of corrupt practices, impact on learning and implantation for University governance in Nigeria. The sample was taken from a cross-section of students, in public universities across the six geo-political zones of Nigeria. Data was collected through an….
Simplified derivation of the collision probability of two objects in independent Keplerian orbits
Creators: name: JeongAhn, Youngmin
name: Malhotra, Renu
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Many topics in planetary studies demand an estimate of the collision probability of two objects moving on nearly Keplerian orbits. In the classic works of Öpik (1951) and Wetherill (1967), the collision probability was derived by linearizing the motion near the collision points, and there is now a vast literature using their method. We present here a simpler and more physically motivated derivation for non-tangential collisions in Keplerian orbits, as well as for tangential collisions that were not previously considered. Our formulas have the added advantage of being manifestly symmetric in the parameters of the two colliding bodies. In common with the Öpik-Wetherill treatments, we linearize the motion of the bodies in the vicinity of the point of orbit intersection (or near the points of minimum distance between the two orbits) and assume a uniform distribution of impact parameter within the collision radius. We point out that the linear approximation leads to singular results for the case of tangential encounters. We regularize this singularity by use of a parabolic approximation of the motion in the vicinity of a tangential encounter.
description: 27 pages, 8 figures, accepted to AJ
Understanding rhyme through network analysis
Creators: name: Houston, Natalie
name: Plecháč, Petr
name: Ruiz Fabo, Pablo
name: Bermúdez Sabel, Helena
name: Birnbaum, David
name: Thorsen, Elise
Publisher: name: Zenodo
Year: 2024

description: Rhyme enacts numerous relationships in poetic texts: relationships between words that share similar sounds; relationships between lines of verse that end in rhyming words; and relationships between the sound and semantic meaning of words that are linked together through rhyme. This panel brings together different approaches to using network analysis to understand the relationships that rhyme enacts in poetry in different language traditions. As the papers in this panel suggest, as one moves from considering rhyme’s function within a single poem to examining larger datasets, one can also consider how rhyme connects words, documents, and/or authors within a corpus.

By juxtaposing papers focusing on poetry in Czech, English, Russian, and Spanish, this panel highlights the fact that rhyme is defined differently in different linguistic and poetic contexts, due to the levels of inflection present in different languages and to the development of different poetic traditions. Some rhyme definitions focus on the shared stressed vowel of single syllables, others encompass polysyllabic rhyme, and others focus on component phonemes, rather than whole words. Thus computational approaches to rhyme must be tailored to the particular languages of the texts under study.

The papers on this panel use different network analysis and graph visualization methods to examine rhyme at the level of the corpus or dataset, rather than the individual poem, in order to understand how rhyme practice changes over time, across languages, and in relation to literary canon formation. It thus contributes both to computational poetics and distant reading methodologies within the digital humanities.
Enhanced magnetocaloric effect from Cr substitution in Ising lanthanide gallium garnets $Ln_3\text{CrGa}_4\text{O}_{12}$ ($Ln$ = Tb, Dy, Ho)
Creators: name: Mukherjee, Paromita
name: Dutton, Siân E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A detailed study on the crystal structure and bulk magnetic properties of Cr substituted Ising type lanthanide gallium garnets $Ln_3\text{CrGa}_4\text{O}_{12}$ ($Ln$ = Tb, Dy, Ho) has been carried out using room temperature powder X-Ray and neutron diffraction, magnetic susceptibility, isothermal magnetisation and heat capacity measurements. The magnetocaloric effect (MCE) in $Ln_3\text{CrGa}_4\text{O}_{12}$ is compared to that of $Ln_3\text{Ga}_5\text{O}_{12}$. In lower magnetic fields attainable by a permanent magnet ($\leq$ 2 T), Cr substitution greatly enhances the MCE by 20% for $Ln$ = Dy and 120% for $Ln$ = Ho compared to the unsubstituted $Ln_3\text{Ga}_5\text{O}_{12}$. This is likely due to changes in the magnetic ground state as Cr substitution also significantly reduces the frustration in the magnetic lattice for the Ising type $Ln_3\text{Ga}_5\text{O}_{12}$.
description: 22 pages, 7 figures, 2 supplementary figures, accepted for publication in Advanced Functional Materials
ESM 3. Key methodological recommendations for more effective studies on bat ectoparasites.
Creators: name: Barbier, Eder
name: Bernard, Enrico
Publisher: name: figshare
Year: 2022
Subjects: Ecology not elsewhere classified

description: Data from: From the Atlantic Forest to the borders of Amazonia: species richness, distribution, and host association of ectoparasitic flies (Diptera: Nycteribiidae and Streblidae) in northeastern Brazil.
Markov Chain Monte Carlo Method in the 1990s: A case study of the spread of mathematical knowledge
Creators: name: Li, Tianli
Publisher: name: University of Chicago
Year: 2022
Subjects: subject: Markov chain Monte Carlo
subject: MCMC
subject: mathematical knowledge
subject: sociology of mathematics
subject: Bayesian inference

description: This thesis is a case study attempting to solve the question of how and why specific mathematical knowledge may rapidly spread in the modern academic system. In post-war academia, large-scale revolutions in pure mathematics appear to be unusual. However, the phenomena of mass innovation and dissemination in the field of applied mathematics can be quite prevalent. Using historical text library research and publication data analysis, this thesis examines the sudden spread of the sampling method Markov chain Monte Carlo (MCMC) in the 1990s. What happened to MCMC in that decade demonstrates that the development and transfer of mathematical knowledge can be a complex, multi-faceted process in which conferences, computing power, software, and "explaining" publications all played their roles. The analysis shows that there is no one dominant force in the spread of such a technique. Spread always depends on the contingent interaction of various forces. Detailed discussion of the example allows us both to list those forces and to show the various ways they interact.
Twisted Burnside-Frobenius theory for endomorphisms of polycyclic groups
Creators: name: Fel'shtyn, Alexander
name: Troitsky, Evgenij
Publisher: name: arXiv
Year: 2017
Subjects: subject: Group Theory (math.GR)
subject: Dynamical Systems (math.DS)
subject: Operator Algebras (math.OA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20C, 20E45, 22D10, 37C25, 47H10, 55M20

description: Let $R(ϕ)$ be the number of $ϕ$-conjugacy (or Reidemeister) classes of an endomorphism $ϕ$ of a group $G$. We prove for several classes of groups (including polycyclic) that the number $R(ϕ)$ is equal to the number of fixed points of the induced map of an appropriate subspace of the unitary dual space $\widehat G$, when $R(ϕ)
description: 11 pages, v.2: small corrections, submitted