cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantifying Observational Projection Effects with a Simulation-based hot CGM model
Creators: name: Shreeram, Soumya
name: Comparat, Johan
name: Merloni, Andrea
name: Zhang, Yi
name: Ponti, Gabriele
name: Nandra, Kirpal
name: ZuHone, John
name: Marini, Ilaria
name: Vladutescu-Zopp, Stephan
name: Popesso, Paola
name: Pakmor, Ruediger
name: Seppi, Riccardo
name: Peroux, Celine
name: Sorini, Daniele
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The hot phase of the circumgalactic medium (CGM) allows us to probe the inflow and outflow of gas within a galaxy, which is responsible for dictating the evolution of the galaxy. Studying the hot CGM sheds light on a better understanding of gas physics, which is crucial to inform and constrain simulation models. With the recent advances in observational measurements probing the hot CGM in X-rays and tSZ, we have a new avenue for widening our knowledge of gas physics and feedback by exploiting the information from current/future observations. In this paper, we use the TNG300 hydrodynamical simulations to build a fully self-consistent forward model for the hot CGM. We construct a lightcone and generate mock X-ray observations. We quantify the projection effects, namely the locally correlated large-scale structure in X-rays and the effect due to satellite galaxies misclassified as centrals which affects the measured hot CGM galactocentric profiles in stacking experiments. We present an analytical model that describes the intrinsic X-ray surface brightness profile across the stellar and halo mass bins. The increasing stellar mass bins result in decreasing values of $β$, the exponent quantifying the slope of the intrinsic galactocentric profiles. We carry forward the current state-of-the-art by also showing the impact of the locally correlated environment on the measured X-ray surface brightness profiles. We also present, for the first time, the effect of misclassified centrals in stacking experiments for three stellar mass bins: $10^{10.5-11}\ M_\odot$, $10^{11-11.2}\ M_\odot$, and $10^{11.2-11.5}\ M_\odot$. We find that the contaminating effect of the misclassified centrals on the stacked profiles increases when the stellar mass decreases.
description: 14 pages, 10 figures, Submitted to A&A, comments welcome
Scrambling in the Charging of Quantum Batteries
Creators: name: Romero, Sebastián V.
name: Ding, Yongcheng
name: Chen, Xi
name: Ban, Yue
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Exponentially fast scrambling of an initial state characterizes quantum chaotic systems. Given the importance of quickly populating higher energy levels from low-energy states in quantum battery charging protocols, this work investigates the role of quantum scrambling in quantum batteries and its effect on optimal power and charging times by means of the Sachdev-Ye-Kitaev model, a maximally-chaotic black hole physics model that has been recently proposed as a quantum battery. We adopt a bare representation with normalized bandwidths to suppress system energy dependence. To our knowledge, this is the first in-depth exploration of quantum scrambling in the context of quantum batteries. By analyzing the dynamics of out-of-time-order correlators, our findings indicate that quantum scrambling does not necessarily lead to faster charging, despite its potential for accelerating the process.
description: Main text: 6 pages, 6 figures. Supplemental material: 3 pages, 2 figures
$\mathrm{U}(1)^{n}$ Chern-Simons theory: partition function, reciprocity formula and CS-duality
Creators: name: Kim, Han-Miru
name: Mathieu, Philippe
name: Tagaris, Michail
name: Thuillier, Frank
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The $\mathrm{U}(1)$ Chern-Simons theory can be extended to a topological $\mathrm{U}(1)^n$ theory by taking a combination of Chern-Simons and BF actions, the mixing being achieved with the help of a collection of integer coupling constants. Based on the Deligne-Beilinson cohomology, a partition function can then be computed for such a $\mathrm{U}(1)^n$ Chern-Simons theory. This partition function is clearly a topological invariant of the closed oriented $3$-manifold on which the theory is defined. Then, by applying a reciprocity formula a new expression of this invariant is obtained which should be a Reshetikhin-Turaev invariant. Finally, a duality between $\mathrm{U}(1)^n$ Chern-Simons theories is demonstrated.
description: 38 pages, 2 figures
Speeding up Quantum Annealing with Engineered Dephasing
Creators: name: Sveistrys, Mykolas
name: Langbehn, Josias
name: Menu, Raphaël
name: Campbell, Steve
name: Morigi, Giovanna
name: Koch, Christiane P.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Building on the insight that engineered noise, specifically, engineered dephasing can enhance the adiabaticity of controlled quantum dynamics, we investigate how a dephasing-generating coupling to an auxiliary quantum system affects quantum annealing protocols. By calculating the exact reduced system dynamics, we show how this coupling enhances the system's adiabaticity solely through a coherent mechanism - an effective energy rescaling. We show that it can lead to an annealing speedup linearly proportional to the strength of the coupling. We discuss the experimental feasibility of the protocols, and investigate the trade-off between fidelity and implementability by examining two modified versions with fewer types of required physical couplings.
description: 12 pages, 5 figures
Best practices for managing single-use plastic bag consumption
Creators: name: Foster, Jake
Publisher: name: The University of British Columbia
Year: 2013

description: Bans, taxes, and hybrid ban-tax policies can each be effective at reducing plastic bag consumption, but bans and ban-tax policies tend to attract more opposition from stakeholders and have been argued to do less to change patterns of consumer behaviour regarding bags than tax-based policies. For these reasons my research concludes that while bans and ban-tax policies can be effective, a tax-based plastic bag management policy is the best practice for reducing plastic bag consumption in an urban space. Managing the consumption of single-use plastic bags through restrictive policies is a way for governments to reduce litter and divert garbage from their waste stream. Reducing the consumption of plastic bags will also lower the rates of their production, drawing less on a non-renewable resource already in high demand. This report aims to analyze plastic bag management efforts in urban spaces to identify what can be considered the best management practices for reducing their consumption. An effort is made to connect the best plastic bag management practices with the context of Metro Vancouver, a region that is trying to reduce its waste but currently has no policies regarding plastic bags. The analysis of plastic bag policies in this report is informed primarily by reviewing research on successful and failed plastic bag management policies around the world. Research into the areas of consumer behaviour (specifically modifying consumer behaviour) and the power of government communication as a tool to influence citizens towards following policies have also been useful to flush out some of the workings of legislated restrictive policies. In addition to peer reviewed material, a substantial amount of grey literature (including city council minutes, municipal and federal government reports, environmental impact reports, news publications, and trade journals) was reviewed to investigate the details of plastic bag management practices that have not been so widely studied. This grey literature also helped to identify the status and barriers of plastic bag management practices in Canada, which so far have not been researched thoroughly. My research has found that the best practices for reducing plastic bag consumption are government imposed policies that can change consumer behaviour towards an anti-plastic bag mentality, are supported (or at least are not opposed to) by industry and public stakeholders, and are actually effective at reducing plastic bag consumption.
Improving target neutron momentum reconstruction using MINER$ν$A $π^0$ data
Creators: name: Pradhan, R K
name: Lalnuntluanga, R
name: Giri, A
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: With the neutrino experiments advancing toward high-precision measurements and greater emphasis on reducing systematic uncertainties, improving the single-pion production models, a major component of the hadronic activity observed in the neutrino oscillation experiments, into the Monte Carlo simulations is crucial. This work presents the predictions of the struck nucleon's Fermi motion by analyzing the charged-current neutral pion production on carbon nucleus in MINER$ν$A. A minimal variation of GENIE and NuWro based on their default models shows an improvement in the prediction of single $π^0$ production. The prediction describes the data more accurately in the higher-momentum tail; however, discrepancies between the predictions and data below the Fermi peak highlight the limitations in current nuclear models used in the Monte Carlo generators.
Negative non-Gaussianity as a salvager for PBHs with PTAs in bounce
Creators: name: Choudhury, Sayantan
name: Dey, Kritartha
name: Ganguly, Siddhant
name: Karde, Ahaskar
name: Singh, Swapnil Kumar
name: Tiwari, Pranjal
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Non-Gaussianity in the primordial curvature perturbation is a crucial element of the early universe due to its significant impact on the primordial black hole (PBH) production. In this work, we focus on the effects of negative non-Gaussianity on PBH abundance through the lens of the compaction function criterion for PBH formation. Our setup utilizes an effective field theory of non-singular bounce, including the standard slow-roll inflation with an ultra-slow roll phase for amplifying the curvature perturbations to form PBHs. We investigate with two separate values of the non-Gaussianity parameter, $f_{\rm NL}=(-39.95,-35/8)$, found within the ekpyrotic contraction and the matter bounce scenarios, respectively, and show that a negatively large amount of $f_{\rm NL}$ can provide sizeable abundance, $10^{-3}\leq f_{\rm PBH}\leq 1$, and completely mitigates the PBH overproduction issue. We also highlight that the case with the effective sound speed $c_{s}=1$, coupled with $f_{\rm NL}=-39.95$, provides an agreement under $1σ$ for the scalar-induced gravitational wave explanation of the latest PTA (NANOGrav15 and EPTA) signal. Lastly, we extract an upper bound on the most negative value of, $f_{\rm NL}\sim -60$, below which we show breaching of the underlying perturbativity constraints on the power spectrum amplitude.
description: Accepted for publication in European Physical Journal C. 54 pages, 8 figures, 2 tables, with new figures and discussions added
FEDERALISMO BRASILEIRO, DESCENTRALIZAÇÃO E CORRUPÇÃO: UMA INVESTIGAÇÃO SOBRE A (IN)EXISTÊNCIA DE CAUSA-EFEITO NESTA RELAÇÃO
Creators: name: SANTANO, Ana Claudia
name: BLANCHET, Luiz Alberto
Publisher: name: Zenodo
Year: 2015

description: Anais do EVINCI - UniBrasil - 2525-5126 https://portaldeperiodicos.unibrasil.com.br/index.php/anaisevinci/article/view/414/397
Fourier-enhanced reduced-order surrogate modeling for uncertainty quantification in electric machine design
Creators: name: Partovizadeh, Aylar
name: Schöps, Sebastian
name: Loukrezis, Dimitrios
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: This work proposes a data-driven surrogate modeling framework for cost-effectively inferring the torque of a permanent magnet synchronous machine under geometric design variations. The framework is separated into a reduced-order modeling and an inference part. Given a dataset of torque signals, each corresponding to a different set of design parameters, torque dimension is first reduced by post-processing a discrete Fourier transform and keeping a reduced number of frequency components. This allows to take advantage of torque periodicity and preserve physical information contained in the frequency components. Next, a response surface model is computed by means of machine learning regression, which maps the design parameters to the reduced frequency components. The response surface models of choice are polynomial chaos expansions, feedforward neural networks, and Gaussian processes. Torque inference is performed by evaluating the response surface model for new design parameters and then inverting the dimension reduction. Numerical results show that the resulting surrogate models lead to sufficiently accurate torque predictions for previously unseen design configurations. The framework is found to be significantly advantageous compared to approximating the original (not reduced) torque signal directly, as well as slightly advantageous compared to using principal component analysis for dimension reduction. The combination of discrete Fourier transform-based dimension reduction with Gaussian process-based response surfaces yields the best-in-class surrogate model for this use case. The surrogate models replace the original, high-fidelity model in Monte Carlo-based uncertainty quantification studies, where they provide accurate torque statistics estimates at significantly reduced computational cost.
Deep Learning solutions to singular ordinary differential equations: from special functions to spherical accretion
Creators: name: Cayuso, R.
name: Herrero-Valea, M.
name: Barausse, E.
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Singular regular points often arise in differential equations describing physical phenomena such as fluid dynamics, electromagnetism, and gravitation. Traditional numerical techniques often fail or become unstable near these points, requiring the use of semi-analytical tools, such as series expansions and perturbative methods, in combination with numerical algorithms; or to invoke more sophisticated methods. In this work, we take an alternative route and leverage the power of machine learning to exploit Physics Informed Neural Networks (PINNs) as a modern approach to solving ordinary differential equations with singular points. PINNs utilize deep learning architectures to approximate solutions by embedding the differential equations into the loss function of the neural network. We discuss the advantages of PINNs in handling singularities, particularly their ability to bypass traditional grid-based methods and provide smooth approximations across irregular regions. Techniques for enhancing the accuracy of PINNs near singular points, such as adaptive loss weighting, are used in order to achieve high efficiency in the training of the network. We exemplify our results by studying four differential equations of interest in mathematics and gravitation -- the Legendre equation, the hypergeometric equation, the solution for black hole space-times in theories of Lorentz violating gravity, and the spherical accretion of a perfect fluid in a Schwarzschild geometry.
description: 20 pages, 10 figures
Age and Cognitive Skills: Use It or Lose It
Creators: name: Hanushek, Eric A.
name: Kinne, Lavinia
name: Witthoeft, Frauke
name: Woessmann, Ludger
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Economics (econ.GN)
subject: FOS: Economics and business

description: Cross-sectional age-skill profiles suggest that workers' cognitive skills start declining by their thirties if not earlier. If accurate, such age-driven skill losses pose a major threat to the human capital of societies with rapidly aging populations. We estimate actual age-skill profiles from individual changes in skills at different ages. We use the unique German longitudinal component of the Programme of the International Assessment of Adult Competencies (PIAAC-L) that retested a large representative sample of adults after 3.5 years. Two main results emerge. First, correcting for measurement error, average skills increase into the forties before decreasing slightly in literacy and more strongly in numeracy. Second, skills decline at older ages only for those with below-average skill usage. White-collar and higher-educated workers with above-average usage show increasing skills even beyond their forties. Women have larger skill losses at older age, particularly in numeracy.
Supplementary document for Terahertz imaging of human skin pathologies using laser feedback interferometry with quantum cascade lasers - 6150172.pdf
Creators: name: Qi, Xiaoqiong
name: Bertling, Karl
name: Stark, Mitchell
name: Taimre, Thomas
name: Kao, Yung-Ching
name: Lim, Yah Leng
name: Han, She
name: Brien, Blake
name: Collins, Angus
name: Walsh, Michael
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Supplemental Document
Gaia20bdk -- a new FUor in Sh 2-301 Star Forming Region
Creators: name: Siwak, M.
name: Kóspál, Á.
name: Ábrahám, P.
name: Marton, G.
name: Zieliński, P.
name: Gromadzki, M.
name: Wyrzykowski, Ł.
name: Nagy, Z.
name: Szilágyi, M.
name: Potter, S. B.
name: Sefako, R.
name: Worters, H. L.
name: Buckley, D. A. H.
name: Giannini, T.
name: Fiorellino, E.
name: de Miera, F. Cruz-Sáenz
name: Kun, M.
name: Szabó, Zs. M.
name: Lucas, P. W.
name: Krzesiński, J.
name: Zakrzewski, B.
name: Ogłoza, W.
name: Pál, A.
name: Cseh, B.
name: Horti-Dávid, Á.
name: Joó, A.
name: Kalup, Cs.
name: Kriskovics, L.
name: Sódor, Á.
name: Szakáts, R.
name: Vinkó, J.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context. We analyse multi-colour photometric and spectroscopic observations of a Young Stellar Object Gaia20bdk. Aims. We aim to investigate the exact nature of the eruptive phenomenon that the star has been experiencing since 2018. Methods. We use public-domain archival photometry to characterise the quiescent phase in order to establish major physical parameters of the progenitor. Then, we use our and public-domain optical and infrared photometry and spectroscopy to study the outburst. Results. Gaia20bdk is a member of the Sharpless 2-301 star-forming region, at a distance of 3.3 kpc. The progenitor is a rather massive 2.7 solar mass, G7-type Class I young star having an effective temperature of 5300 K and bolometric luminosity of 11 solar luminosities. The optical and infrared photometric and spectroscopic data obtained during the outburst show a variety of signatures commonly found in classical FUors. Our disc modelling results in a bolometric luminosity of 100-200 solar luminosities and mass accretion rate of 1-2e-5 solar masses per year, also confirming the object's FUor classification. Further monitoring is necessary to track the light changes, accretion rate and spectral variations, as well as to understood the mechanisms behind the disc flickering.
description: To appear in A&A
title: Bildungspolitik und Familienförderung als komplementäre Elemente von Präventionsstrategien.: Stellungnahme zur Anhörung der Ausschüsse für Schule und Bildung und für Familie, Kinder und Jugend im Landtag Nordrhein-Westfalen vom 07.09.2021.
Creators: name: Stöbe-Blossey, Sybille
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2021
Subjects: subject: 300

description: Stellungnahme zum Antrag der Fraktion der SPD im Landtag des Landes Nordrhein-Westfalen Zusammen aufwachsen in Nordrhein-Westfalen: Aufbruch in ein selbstbestimmtes Leben. Nordrhein-Westfalen braucht eine Familien- und Bildungsoffensive! Drucksache 17/13777 Anhörung des Ausschusses für Schule und Bildung und des Ausschusses für Familie, Kinder und Jugend am 7.September 2021 Mit dem Antrag „Zusammen aufwachsen in Nord-rhein-Westfalen“ wird eine Familien- und Bildungsoffensive gefordert, die zu einem gelingenden Aufwachsen von Kindern und Jugendlichen in Nordrhein-Westfalen beitragen und allen Individuen Bildungs-, Entwicklungs- und Teilhabechancen eröffnen soll – gute Startchancen und „zweite Chancen“ im Falle von besonderen Herausforderungen und Unterstützungsbedarfen. Im Folgenden wird zunächst auf die Einordnung der Familien- und Bildungsoffensive in Strategien vorbeugender Sozialpolitik eingegangen (1). Anschließend werden Präventionsparadoxien thematisiert, die nicht selten dazu beitragen, dass eine vorbeugende Sozialpolitik nicht durchsetzbar ist oder in der Umsetzung an den selbst gesetzten Zielen scheitert (2). Aus dieser Darstellung werden Anforderungen für die Ausgestaltung der Familien- und Bildungsoffensive abgeleitet (3), die dann für die im Antrag dargestellten sieben Elemente der Offensive konkretisiert werden (4).
description: IAQ-Standpunkte, vol. 2021, no. 01
UMA REVISÃO DOS MÉTODOS EXISTENTES DE MEDIÇÃO DA CORRUPÇÃO COMO AVALIAÇÃO DO DESENVOLVIMENTO E EFICÁCIA DE POLÍTICAS PÚBLICAS
Creators: name: SANTANO, Ana Claudia
name: BLANCHET, Luiz Alberto
Publisher: name: Zenodo
Year: 2015

description: Anais do EVINCI - UniBrasil - 2525-5126 https://portaldeperiodicos.unibrasil.com.br/index.php/anaisevinci/article/view/650/628
Förster valley-orbit coupling and topological lattice of hybrid moiré excitons
Creators: name: Zheng, Huiyuan
name: Li, Ci
name: Yu, Hongyi
name: Yao, Wang
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Hybrid exciton in moiré superlattices of two-dimensional (2D) semiconductors inherits the electric dipole, strong moiré trapping, and stacking optical selection rules from its interlayer part, whereas the intralayer part is intended for enhancing optical coupling strength. Here, we show that electron-hole Coulomb exchange, or Förster coupling, within the intralayer component qualitatively alters the properties of moiré excitons, enabling their coherent hopping between moiré traps laterally separated over 10 nm and/or across layers, where their kinetic propagation is completely suppressed. Valley-flip hopping channels are found as significant as the valley-conserving ones, leading to rich possibilities to tailor valley-orbit-couplings and introduce non-trivial topology to the moiré exciton superlattice. In twisted MoTe$_2$ where hybrid moiré excitons feature a symmetry protection from radiative recombination, we show that Förster valley-orbit-coupling can give rise to a rich topological phase diagram.
description: 22 pages, 10 figures
Batched Bayesian optimization by maximizing the probability of including the optimum
Creators: name: Fromer, Jenna
name: Wang, Runzhong
name: Manjrekar, Mrunali
name: Tripp, Austin
name: Hernández-Lobato, José Miguel
name: Coley, Connor W.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Batched Bayesian optimization (BO) can accelerate molecular design by efficiently identifying top-performing compounds from a large chemical library. Existing acquisition strategies for batch design in BO aim to balance exploration and exploitation. This often involves optimizing non-additive batch acquisition functions, necessitating approximation via myopic construction and/or diversity heuristics. In this work, we propose an acquisition strategy for discrete optimization that is motivated by pure exploitation, qPO (multipoint Probability of Optimality). qPO maximizes the probability that the batch includes the true optimum, which is expressible as the sum over individual acquisition scores and thereby circumvents the combinatorial challenge of optimizing a batch acquisition function. We differentiate the proposed strategy from parallel Thompson sampling and discuss how it implicitly captures diversity. Finally, we apply our method to the model-guided exploration of large chemical libraries and provide empirical evidence that it is competitive with and complements other state-of-the-art methods in batched Bayesian optimization.
AS MEDIDAS ANTICORRUPÇÃO RECENTEMENTE APROVADAS NO BRASIL: AVALIAÇÃO DA SUA EFICÁCIA
Creators: name: SANTANO, Ana Claudia
name: BLANCHET, Luiz Alberto
Publisher: name: Zenodo
Year: 2015

description: Anais do EVINCI - UniBrasil - 2525-5126 https://portaldeperiodicos.unibrasil.com.br/index.php/anaisevinci/article/view/384/368
Motorized zoom control
Creators: name: Bagri, Daljit
name: Von Flotow, Maurizio
Publisher: name: The University of British Columbia
Year: 2013

description: This report is a complete and in-depth look into all of the work that went into building a motorized zoom controller for DSLR cameras. The key objectives of this project were to build a motorized zoom controller that would be much cheaper than any commercialized product of its type, while still retaining full functionality. As an additional objective, the design would allow for an autonomous control of zoom or focus during time lapse photography. This was done by iteratively designing, building,and debugging a mechanism from September 2012 to April 2013. Each unsuccessful design gave light to a new more functional one. Upon finally assembling a sufficiently functional design, we began shooting test footage of both time lapse and zoom control and further improve the design. By the end of the allotted project work time, there remain a few bugs. But the design has accomplished its main goals. We have created a prototype device that is capable of adapting to multiple lens geometries to somewhat smoothly control the zoom with adequate speed proportional to a rocker potentiometer. The very same device is capable of smoothly changing the focus of a camera lens while shooting time lapse photography, allowing for uncommon and eye-capturing time lapse footage. The smallest tested focus steps were about 0.21°, which was nearly the exact step size proposed in our project proposal (submitted Fall of 2012) as an adequately small step for smooth zoom or focus. This focus control is easily adaptable to different time lapse settings using a simple Arduino code. The project is left somewhat incomplete, with the main necessary additions being the elimination of jerkiness in the zoom motion, a glitch in the servo control code, mounting the electronics and power supply more portably, and some further time lapse control tests. The future of this device is bright with relatively easy implementation of wireless control and the possibility of swapping motors to a more suitable one.
ERICC Policy Brief _ Implementing the Myanmar Curriculum in Rohingya Camps: Overcoming Challenges and Barriers
Creators: name: ERICC Consortium
name: Saha, Proma
name: Haque, Ashraf
name: Hasan, Galib
name: Abedin, Mohosin
name: Dow, Jeffrey
name: Zaw, Htet Thiha
name: Diazgranados Ferráns, Silvia
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 390201
subject: Education policy

description: This policy brief draws from the findings of a comprehensive Education Research in Conflict and Protracted Crisis (ERICC) research study titled “Formative research on system coherence for quality and effective delivery of the Myanmar Curriculum in Cox’s Bazar” (forthcoming). The study was developed in response to existing gaps identified through a comprehensive evidence review1 and a country scan process that involved extensive consultations with stakeholders involved in the response to the Rohingya crisis in Cox’s Bazar2. The study aimed to identify factors affecting the implementation of the Myanmar Curriculum (MC) for Rohingya refugees in Cox’s Bazar, focusing on policy-level enablers and constraints, as well as local factors affecting education delivery.Implementation of the MC in Cox’s Bazar refugee camps marks a vital step towards delivering quality education to Rohingya refugee children. The review findings show that, while this initiative offers a structured curriculum that is culturally relevant, significant challenges remain, including a shortage of qualified teachers, language barriers and inadequate infrastructure. To ensure the sustainability of educational initiatives, it is imperative to address these challenges through comprehensive teacher training, mentorship programmes, language support and long-term and flexible funding.
title: Maternal Age and Infant Health
Creators: name: Borra, Cristina
name: González, Libertad
name: Patiño, David
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2021
Subjects: subject: Maternal age
subject: Infant health
subject: School cohort
subject: 610
subject: 330

description: We study the effects of maternal age on infant health. Age at birth has been increasing for the past several decades in many countries, and correlations show that health at birth is worse for children born to older mothers. In order to identify causal effects, we exploit school entry cutoffs and the empirical finding that women who are older for their cohort in school tend to give birth later. In Spain, children born in December start school a year earlier than those born the following January, despite being essentially the same age. We show that as a result, January‐born women finish school later and are (several months) older when they marry and when they have their first child. We find no effect on educational attainment. We then compare the health at birth of the children of women born in January versus the previous December, using administrative, population‐level data, and following a regression discontinuity design. We find small and insignificant effects on average weight at birth, but the children of January‐born mothers are more likely to have very low birthweight. We interpret our results as suggestive of a causal effect of maternal age on infant health, concentrated in the left tail of the birthweight distribution, with older mothers more likely to give birth to (very) premature babies.
description: CINCH working paper series, vol. 2021, no. 06
Experimental single-copy distillation of quantumness from higher-dimensional entanglement
Creators: name: Fang, Xiao-Xu
name: Tabia, Gelo Noel M.
name: Chen, Kai-Siang
name: Liang, Yeong-Cherng
name: Lu, He
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Entanglement is at the heart of quantum theory and is responsible for various quantum-enabling technologies. In practice, during its preparation, storage, and distribution to the intended recipients, this valuable quantum resource may suffer from noisy interactions that reduce its usefulness for the desired information-processing tasks. Conventional schemes of entanglement distillation aim to alleviate this problem by performing collective operations on multiple copies of these decohered states and sacrificing some of them to recover Bell pairs. However, for this scheme to work, the states to be distilled should already contain a large enough fraction of maximally entangled states before these collective operations. Not all entangled quantum states meet this premise. Here, by using the paradigmatic family of two-qutrit Werner states as an exemplifying example, we experimentally demonstrate how one may use single-copy local filtering operations to meet this requirement and to recover the quantumness hidden in these higher-dimensional states. Among others, our results provide the first proof-of-principle experimental certification of the Bell-nonlocal properties of these intriguing entangled states, the activation of their usefulness for quantum teleportation, dense coding, and an enhancement of their quantum steerability, and hence usefulness for certain discrimination tasks. Our theoretically established lower bounds on the steering robustness of these states, when they admit a symmetric quasiextension or a bosonic symmetric extension, and when they show hidden dense-codability may also be of independent interest.
description: 17 pages, 15 figures, 4 tables
Train-the-Trainer: GOBLET’s initiative to increase the provision of bioinformatics training in NGS
Creators: name: Attwood, Teresa K.
name: Bongcam-Rudloff, Erik
name: Fernandes, Pedro
name: Korpelainen, Eija
name: Lewitter, Fran
name: Rustici, Gabriella
name: Schneider, Maria Victoria
name: Gelder, Celia W.G. Van
name: Palagi, Patricia M.
Publisher: name: F1000Research
Year: 2016

description: GOBLET is a global organisation that coordinates, shares and supports bioinformatics training activities worldwide, aiming to plug critical skills gaps, ultimately to facilitate the advancement of health- and life-science research. The focus of GOBLET’s Train-the-Trainer initiative is on setting up effective training courses to help plug known skills gaps, especially in the area of NGS data analysis. This initiative will help to share bioinformatics training expertise, experience and resources; train bioinformatics and life-science specialists; support life-science research; promote collaborations among scientists worldwide; build capacity in developing and developed countries. The programme will consist of workshops, which will take place on different continents (e.g., South America, Africa, Asia) and are expected to co-locate as satellite events to major conferences. Each workshop is organised around two main topics: 1) how to exploit NGS data, and 2) how to set up and deliver excellent training courses. Trainers (members of GOBLET, expert in the field) will teach on a volunteer basis. Workshop participants will commit to replicate the workshops at least once, driving an exponential effect. To deliver this ambitious project, GOBLET is seeking partners and sponsors interested in increasing the provision of bioinformatics training in the area of NGS, either as GOBLET collaborators to customise the programme to specific communities or to fund workshops at given locations. To learn more about this project, see http://www.mygoblet.org/content/fund-raising, contact frc@mygoblet.org, talk to us in GOBLET’s booth and visit this poster!
Understanding the factors that keep smokers smoking: the role of negative affect in deprived and satiated smokers
Creators: name: Bulgin, Tasha
Publisher: name: No Publisher Supplied
Year: 2024

description: Tobacco use is a major cause of early death in the United States; however, cigarette smoking is still prevalent in society despite the numerous attempts by the public health sector to decrease the smoking rates of the population. One important factor that contributes to smoking behavior is negative affect. Negative affect in smokers is linked to: a) increased cigarette craving and smoking; and b) relapse in smokers attempting to quit. Negative affect is particularly prominent among withdrawal symptoms that arise within hours during smoking deprivation in regular smokers, and a main motive to continue smoking is the reduction of such negative affect. Thus, it is important to understand how the nicotine-addicted brain responds to negative affect, and how it is modulated under conditions of early deprivation. This study aims to examine the relationship between negative affect in smokers and smoking-related behavioral responses, specifically how smoking deprivation influences the motivation to avoid aversive stimuli and smoking stimuli. During the escape from aversive images task, participants were asked to click a button to terminate exposure to aversive and smoking images. Response time indexed motivation to avoid aversive images between smoking conditions. Neural activity in regions such as the amygdala and the ventral striatum, regions prominently involved in affective processing and avoidance behavior, were examined for effects of smoking deprivation during exposure to aversive images. Results suggest that while deprivation may increase craving and negative affect in smokers, this negative affect may not significantly affect motivation to avoid aversive or smoking stimuli. Results also showed deactivation in amygdala and ventral striatum regions when responding to aversive images. This was contrary to expected hypotheses and may have implications in how smoking cessation interventions are carried out.
Quantum backflow for two identical particles
Creators: name: Barbier, Maximilien
name: Goussev, Arseni
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum mechanics introduces the possibility for particles to move in a direction opposite to their momentum -- a counter-intuitive and classically impossible phenomenon known as quantum backflow. The magnitude of this effect is relatively small, making its experimental observation, which has yet to be achieved, particularly challenging. Here, we investigate the influence of quantum statistics on the maximal backflow attainable for two identical particles confined to a ring. Notably, we demonstrate that the fermionic statistics significantly impedes quantum backflow compared to the bosonic statistics. Our findings suggest that any future experimental realization of quantum backflow should prioritize systems involving bosons rather than fermions.
description: 23 pages, 2 figures
HOW TOKENIZATION AND ARCHAEO-NFT COLLECTION OFFERINGS MAY CHANGE THE FUTURE OF INDUSTRIAL MINING AND ARCHAEOLOGICAL PROJECT FUNDING VIA ENHANCEMENT OF LiQUIDATION RATIO
Creators: name: Alkoclar Erdal Can
name: Yesil Metehan
name: Karademir Musa
name: Darlan, Esen
name: Oğul, Mahmut
Publisher: name: Zenodo
Year: 2022
Subjects: Tokenization Archaeological NFT

description: How tokenization of mining licenses and industrial raw materials and Archaeological NFT offerings based on identical 3D re-modelling of actual collectionized artifacts, may serve as effective means of asset liquidation & re-mobilization of Covid-19 stagnated global economy. Erdal Can Alkoclar & Musa Karademir & Esen Darlan
Engineering recommendation report : Prosthesis electric power pack control system
Creators: name: Sanchez, Edson
name: Anzovino, Francesco
name: Watanabe, Thomas
Publisher: name: The University of British Columbia
Year: 2013

description: Prosthesis is a two story tall, 3000 kg, four legged wearable walking machine intended to be human controlled. Its movements will be controlled by a pilot standing inside of the machine. The pilot‟s movements will be mapped to the legs of Prosthesis via an exoskeletal interface. The final machine will require approximately 60 kW of hydraulic power to reach top speed and will be 100% electric. The current prototype leg, also known as the Alpha leg, requires a 12 kW continuous power supply, which will come from a pump and electric motor combination. Our team developed the control system for the electric power pack of Prosthesis. The work involved computer programming, mostly in C, as well as the processing of sensor data. In terms of the physical components of the pack, we helped our project sponsor by providing him with a set of calculations and performance curves detailing the possible states of the electric motors that will be used on Prosthesis. To perform tests on the controller that we developed, we chose a gear pump proportional to the electric power pack available to us at the time of testing. In other words, we determined the capacity of the pump we needed to be able to move the Alpha leg with a different power pack. The control is done via an Arduino microcontroller that is programmed in C. It is in charge of keeping the pressure as close as possible to a user-specified pressure, known as the setpoint. This was done by implementing a software PID controller on the Arduino. The controller has two operating modes, one of which follows a simplified PID control scheme, using a constant pressure as the “target” or setpoint. The other controller setting, referred to as Load Sense, keeps the pressure at the pump outlet some constant amount higher than the pressure at a predetermined spot in the hydraulic line. Simply put, the pump outlet pressure adapts to the load in the hydraulic line. The setpoint based PID control was tested and found to be within acceptable operating parameters. An initial version of the Load Sense control was created, but it was neither completed nor tested by the submission of this report.
Ground-state properties and structure evolutions of odd-$A$ transuranium Bk isotopes from deformed relativistic Hartree-Bogoliubov theory in continuum
Creators: name: Huang, Zi-Dan
name: Zhang, Wei
name: Zhang, Shuang-Quan
name: Sun, Ting-Ting
Publisher: name: arXiv
Year: 2024
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The studies of transuranium nuclei are of vital significance in exploring the existence of the ``island of superheavy nuclei". This work presents the systematic investigations for the ground-state properties and structure evolutions of odd-$A$ transuranium Bk isotopes taking the deformed relativistic Hartree-Bogoliubov theory in continuum~(DRHBc) with PC-PK1 density functional, in comparison with those by spherical relativistic continuum Hartree-Bogoliubov~(RCHB) theory. The DRHBc calculations offer improved descriptions of the binding energies, closely aligning with the experimental data. The incorporation of deformation effects in DRHBc results in enhanced nuclear binding energies and a notable reduction in $α$-decay energies. With the rotational corrections further incorporated, the theoretical deviation by DRHBc from the experimental data is further reduced. Based on the two-neutron gap $δ_{\rm 2n}$ and the neutron pairing energy $E_{\rm pair}^n$, prominent shell closures at $N=184$ and $258$, as well as potential sub-shell structures at $N=142, 150, 162, 178, 218$, and $230$ are exhibited. A quasi-periodic variation among prolate, oblate, and spherical shapes as well as prolate deformation predominance have been shown in the evolutions of the quadrupole deformation. Possible shape coexistence is predicted in $^{331}$Bk with the oblate and prolate minima in close energies, which is further supported by the triaxial relativistic Hartree-Bogoliubov theory in continuum~(TRHBc) calculations. The neutron, proton, and charge radii predicted by DRHBc reveal pronounced kink structures at $N=184$ and $258$ in their evolutions with neutron number and compared to those by RCHB, deformation effect significantly enhances the radii of open-shell nuclei.
description: 11 pages, 9 figures
FEQIS: A free-boundary equilibrium solver for integrated modeling of tokamak plasmas
Creators: name: Fable, E.
name: Tardini, G.
name: Giannone, L.
name: Team, the ASDEX Upgrade
Publisher: name: arXiv
Year: 2024
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A new axisymmetric equilibrium solver has been written, called FEQIS (Flexible EQuIlibrium Solver), which purpose is to be used inside integrated modeling of tokamak plasmas. The FEQIS code solves the Grad-Shafranov equation and the "circuit" equations for the external coils and passive conducting structures that are toroidally connected. The code has been specifically equipped with flexibility in choice of circuit connections, and a stripped-down numerical scheme for the solution of the Grad-Shafranov equation through a structure of multi-level simplifications which can be tested against the required accuracy.
MACK: Mismodeling Addressed with Contrastive Knowledge
Creators: name: Sheldon, Liam Rankin
name: Rankin, Dylan Sheldon
name: Harris, Philip
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Machine Learning (cs.LG)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The use of machine learning methods in high energy physics typically relies on large volumes of precise simulation for training. As machine learning models become more complex they can become increasingly sensitive to differences between this simulation and the real data collected by experiments. We present a generic methodology based on contrastive learning which is able to greatly mitigate this negative effect. Crucially, the method does not require prior knowledge of the specifics of the mismodeling. While we demonstrate the efficacy of this technique using the task of jet-tagging at the Large Hadron Collider, it is applicable to a wide array of different tasks both in and out of the field of high energy physics.
description: 13 pages, 4 figures, Submission to SciPost
title: Towards an Integrated Framework of Group Awareness Support for Collaborative Learning in Social Media
Creators: name: Ollesch, Lisa
name: Heimbuch, Sven
name: Bodemer, Daniel
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2021
Subjects: subject: Computer-supported collaborative learning
subject: group awareness
subject: social media
subject: wikis
subject: 150

description: In computer-supported collaborative learning, group awareness tools have been shown to be helpful regarding learning processes and outcomes. Previous research has focused on the support via cognitive and behavioural group awareness information, largely neglecting emotional group awareness information and often investigating these three aspects separately. To support large social media groups such as wiki communities, integrating different types of group awareness (GA) information may yield benefits, since these communities encounter several challenges. Although jointly presenting different GA information is assumed to be advantageous for collaborative learning, GA interaction effects including personality traits are still largely unexplored. In order to close this research gap, an integrated framework is proposed, which enables the systematic empirical investigation of (interaction) effects of different types of GA information on behavioural, cognitive, and emotional challenges in computer-supported collaborative learning, with a focus on wikis.
Uncovering the working experience at the North Pacific Cannery : the canning line
Creators: name: Westerhof, Alana
Publisher: name: The University of British Columbia
Year: 2013

description: Despite the success of the North Pacific Cannery compared to other canneries in the area, the people that worked in the canning line at NPC were faced with racial and gender inequality. By looking into previous work done on this subject, and looking at the resources at the UBC archives, I was able to find proof of this inequality through differences in pay amounts, different hiring techniques, and other sources proving inequality in the canning line. I analyzed multiple secondary sources, and particularly looked at the Anglo-British Columbia Packing Company Fonds at the UBC archives. What I learnt was that there was discrimination on the Chinese workers at the NPC, and I also noticed that the women that did work at the cannery were mainly Chinese, and only worked inside the cannery. I was able to get an understanding of what the living and working conditions were like for the workers, mainly through secondary sources I read. Through this paper, the inequality of the workers at the NPC canning line are brought forward, in hopes of understanding what it was like to work at the canning line for the different races and genders involved.