cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Two-component spinor techniques and Feynman rules for quantum field theory and supersymmetry
Creators: name: Dreiner, Herbi K.
name: Haber, Howard E.
name: Martin, Stephen P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Two-component spinors are the basic ingredients for describing fermions in quantum field theory in four space-time dimensions. We develop and review the techniques of the two-component spinor formalism and provide a complete set of Feynman rules for fermions using two-component spinor notation. These rules are suitable for practical calculations of cross-sections, decay rates, and radiative corrections in the Standard Model and its extensions, including supersymmetry, and many explicit examples are provided. The unified treatment presented in this review applies to massless Weyl fermions and massive Dirac and Majorana fermions. We exhibit the relation between the two-component spinor formalism and the more traditional four-component spinor formalism, and indicate their connections to the spinor helicity method and techniques for the computation of helicity amplitudes.
description: 313 pages. Version 2 adds 53 pages and 91 references. Version 3 adds 6 pages and 8 references. Version 4 adds 6 pages and 9 references. Version 5 is the version published in Physics Reports. Version 6 adds 2 pages and 3 references and corrects all errors in the published version that have come to the attention of the authors. See https://www.niu.edu/spmartin/spinors/ for errata and other features
Supplementary document for Compact highly-sensitive Fabry-Perot temperature and gas pressure sensing probe fabricated by femtosecond laser and PDMS - 6399757.pdf
Creators: name: Zhu, Xiping
name: Jiang, Chao
name: Huang, Huiling
name: Cao, Tingshui
name: Sun, Simei
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: supplemental document
On the connection between the solutions to the Dirac and Weyl equations and the corresponding electromagnetic 4-potentials
Creators: name: Kechriniotis, Aristides I.
name: Tsonos, Christos A.
name: Delibasis, Konstantinos K.
name: Tsigaridas, Georgios N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 35Q40, 35Q41

description: In this paper we study in detail the connection between the solutions to the Dirac and Weyl equation and the associated electromagnetic 4-potentials. First, it is proven that all solutions to the Weyl equations are degenerate, in the sense that they correspond to an infinite number of electromagnetic 4-potentials. As far as the solutions to the Dirac equation are concerned, it is shown that they can be classified into two classes. The elements of the first class correspond to one and only one 4-potential, and are called non-degenerate Dirac solutions. On the other hand, the elements of the second class correspond to an infinite number of 4-potentials, and are called degenerate Dirac solutions. Further, it is proven that at least two of these 4-potentials are gauge-inequivalent, corresponding to different electromagnetic fields. In order to illustrate this particularly important result we have studied the denerate solutions to the force-free Dirac equation and shown that they correspond to massless particles. We have also provided explicit examples regarding solutions to the force-free Weyl equation and the Weyl equation for a constant magnetic field. In all cases we have calculated the infinite number of different electromagnetic fields corresponding to these solutions.
description: In this version we have corrected a mistake regarding the calculation of the electromagnetic fields from the electromagnetic 4-potentials. The physical interpretation of the results does not change
AI-based Drone Assisted Human Rescue in Disaster Environments: Challenges and Opportunities
Creators: name: Papyan, Narek
name: Kulhandjian, Michel
name: Kulhandjian, Hovannes
name: Aslanyan, Levon Hakob
Publisher: name: arXiv
Year: 2024
Subjects: subject: Sound (cs.SD)
subject: Artificial Intelligence (cs.AI)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: I.2.7; I.2.10; I.4.0
subject: 68U10, 68T50(Primary) 68T45 (Secondary)

description: In this survey we are focusing on utilizing drone-based systems for the detection of individuals, particularly by identifying human screams and other distress signals. This study has significant relevance in post-disaster scenarios, including events such as earthquakes, hurricanes, military conflicts, wildfires, and more. These drones are capable of hovering over disaster-stricken areas that may be challenging for rescue teams to access directly. Unmanned aerial vehicles (UAVs), commonly referred to as drones, are frequently deployed for search-and-rescue missions during disaster situations. Typically, drones capture aerial images to assess structural damage and identify the extent of the disaster. They also employ thermal imaging technology to detect body heat signatures, which can help locate individuals. In some cases, larger drones are used to deliver essential supplies to people stranded in isolated disaster-stricken areas. In our discussions, we delve into the unique challenges associated with locating humans through aerial acoustics. The auditory system must distinguish between human cries and sounds that occur naturally, such as animal calls and wind. Additionally, it should be capable of recognizing distinct patterns related to signals like shouting, clapping, or other ways in which people attempt to signal rescue teams. To tackle this challenge, one solution involves harnessing artificial intelligence (AI) to analyze sound frequencies and identify common audio signatures. Deep learning-based networks, such as convolutional neural networks (CNNs), can be trained using these signatures to filter out noise generated by drone motors and other environmental factors. Furthermore, employing signal processing techniques like the direction of arrival (DOA) based on microphone array signals can enhance the precision of tracking the source of human noises.
title: Letter: Ruth C. Paden to C. Harrison Mann, Jr., February 2, 1956
Creators: name: Paden, Ruth C.
Publisher: name: George Mason University
Year: 2005
Subjects: subject: Moncure bill
subject: Moncure, Frank P.
subject: Integration
subject: Desegregation
subject: Arlington County School Board

description: Letter: typescript signed, 11" x 8.5" (29.7 cm x 21.6 cm)
description: Letter from Ruth C. Paden to C. Harrison Mann, Jr. urging Mann to vote for the Moncure bill, named after its sponsor Frank P. Moncure, which would remove the elected Arlington County School Board which was percieved to be for integration of Arlington County schools. C. Harrison Mann, Jr. Collection 2.29
Statistics of the electromagnetic response of a chaotic reverberation chamber
Creators: name: Gros, J. -B.
name: Kuhl, U.
name: Legrand, O.
name: Mortessagne, F.
name: Picon, O.
name: Richalot, E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: This article presents a study of the electromagnetic response of a chaotic reverberation chamber (RC) in the presence of losses. By means of simulations and of experiments, the fluctuations in the maxima of the field obtained in a conventional mode-stirred RC are compared with those in a chaotic RC in the neighborhood of the Lowest Useable Frequency (LUF). The present work illustrates that the universal spectral and spatial statistical properties of chaotic RCs allow to meet more adequately the criteria required by the Standard IEC 61000-4-21 to perform tests of electromagnetic compatibility.
description: 6 pages, 9 figures
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Wong Kong Hing, Hin Sun Yow, [Mah Nang Jon], Lew Sang Hong, Lew Fong, Lee Kam, Jung Lok Poy, Chow Kam Chun, Chow Leong Kew, Lew Choy.
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Woo Gim Ling, Jay Guk Lee, Lee Sing Wuok, Look Chong, Woo Jang Chun, Woo Yow King, Woo Hoo Yong, Poon Gong Wah, Poon Wing, [Dang Hoy].
An evolutionary advantage of cooperation
Creators: name: Peters, Ole
name: Adamou, Alexander
Publisher: name: arXiv
Year: 2015
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Populations and Evolution (q-bio.PE)
subject: General Finance (q-fin.GN)
subject: FOS: Physical sciences
subject: FOS: Biological sciences
subject: FOS: Economics and business

description: Cooperation is a persistent behavioral pattern of entities pooling and sharing resources. Its ubiquity in nature poses a conundrum. Whenever two entities cooperate, one must willingly relinquish something of value to the other. Why is this apparent altruism favored in evolution? Classical solutions assume a net fitness gain in a cooperative transaction which, through reciprocity or relatedness, finds its way back from recipient to donor. We seek the source of this fitness gain. Our analysis rests on the insight that evolutionary processes are typically multiplicative and noisy. Fluctuations have a net negative effect on the long-time growth rate of resources but no effect on the growth rate of their expectation value. This is an example of non-ergodicity. By reducing the amplitude of fluctuations, pooling and sharing increases the long-time growth rate for cooperating entities, meaning that cooperators outgrow similar non-cooperators. We identify this increase in growth rate as the net fitness gain, consistent with the concept of geometric mean fitness in the biological literature. This constitutes a fundamental mechanism for the evolution of cooperation. Its minimal assumptions make it a candidate explanation of cooperation in settings too simple for other fitness gains, such as emergent function and specialization, to be probable. One such example is the transition from single cells to early multicellular life.
description: 16 pages, 2 figures
Extremes of the two-dimensional Gaussian free field with scale-dependent variance
Creators: name: Arguin, Louis-Pierre
name: Ouimet, Frédéric
Publisher: name: arXiv
Year: 2015
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G70, 82B44

description: In this paper, we study a random field constructed from the two-dimensional Gaussian free field (GFF) by modifying the variance along the scales in the neighborhood of each point. The construction can be seen as a local martingale transform and is akin to the time-inhomogeneous branching random walk. In the case where the variance takes finitely many values, we compute the first order of the maximum and the log-number of high points. These quantities were obtained by Bolthausen, Deuschel and Giacomin (2001) and Daviaud (2006) when the variance is constant on all scales. The proof relies on a truncated second moment method proposed by Kistler (2015), which streamlines the proof of the previous results. We also discuss possible extensions of the construction to the continuous GFF.
description: 30 pages, 4 figures. The argument in Lemma 3.1 and 3.4 was revised. Lemma A.4, A.5 and A.6 were added for this reason. Other typos were corrected throughout the article. The proof of Lemma A.1 and A.3 was simplified
title: Effects of the Minimum Legal Drinking Age on the Blood Alcohol Levels of Victims of Violent Death Ages 18-23 in Maryland
Creators: name: Ainsworth, Stephanie A.
Publisher: name: George Mason University
Year: 2010
Subjects: subject: Alcohol consumption
subject: Traffic deaths
subject: Violent death
subject: Blood alcohol content
subject: Drinking age

description: The Minimum Legal Drinking Age Act is the most widely studied alcohol control policy in the United States. Despite this attention, however, inconsistencies remain among findings in previous literature. It is largely accepted that the Minimum Legal Drinking Age Act was responsible for a considerable decrease in traffic-related teen fatalities, but little is known about its effectiveness in reducing homicides, suicides, and non-traffic accidents, the other leading causes of death among 18-23 year-olds in the United States. Moreover, most of the research that has been conducted thus far has been on a national scale using aggregate data for the U.S. The present analysis uses state-level data to analyze the effects of the minimum legal drinking age change on blood alcohol levels of victims of violent death in the state of Maryland. Data consists of all violent deaths of victims ages 18-23 in the state from one year before to one year after the minimum legal drinking age change. Using logistic regression and ANOVA, the data was analyzed for an interaction between age and the implementation of the minimum legal drinking age change. Although in the expected direction, results indicate that changing the minimum legal drinking age was not a significant factor in reducing violent deaths among the target population. These findings suggest that the minimum legal drinking age may have not have influenced traffic fatalities as was originally believed. Policy implications of these findings are further discussed.
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Lee Pow, Woo Wan Koo, Lee King Hee, [Song Jong Fonga], Yee Chong Mon, Yee Wah Yoke, Mah Boo Jun, Wong Sing, Lee Wing, Chan Yow.
Maxima of branching random walks with piecewise constant variance
Creators: name: Ouimet, Frédéric
Publisher: name: arXiv
Year: 2015
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G50, 60J80

description: This article extends the results of Fang & Zeitouni (2012a) on branching random walks (BRWs) with Gaussian increments in time inhomogeneous environments. We treat the case where the variance of the increments changes a finite number of times at different scales in [0,1] under a slight restriction. We find the asymptotics of the maximum up to an OP(1) error and show how the profile of the variance influences the leading order and the logarithmic correction term. A more general result was independently obtained by Mallein (2015b) when the law of the increments is not necessarily Gaussian. However, the proof we present here generalizes the approach of Fang & Zeitouni (2012a) instead of using the spinal decomposition of the BRW. As such, the proof is easier to understand and more robust in the presence of an approximate branching structure.
description: 28 pages, 4 figures
title: Report: "Development of End-User Access Tools to the Science of Design," January 1992
Creators: name: Warfield, John
name: Cardenas, Roxana
Publisher: name: George Mason University
Year: 1992
Subjects: subject: Quality Fubction Deployment (QFD)
subject: Japanese Tool Box
subject: Cardenas, Roxana
subject: Ford Motor Company
subject: Institute for Advanced Study in the Integrative Sciences (IASIS)
subject: Interactive Management (IM)
subject: Interpretive Structural Modeling (ISM)
subject: Drucker, Peter
subject: Warfield, John N.
subject: Demosophia

description: Manuscript: typescript with cover image, 62 pgs. 8.5" x 11" (21.6 cm x 29.7 cm)
description: This paper is a description of the work done by Warfield and Roxana Cardenas for the Ford Motor Company. This goal of the work was to "engage Ford Motor Company with a new process that can be gradually installed through substitution in Ford's present Process Improvement Process." The paper discusses Japanese management and manufacturing techniques and concludes that Warfield's IM process is superior. John N. Warfield Collection 50.4.
Near-Optimal Variance-Based Uncertainty Relations
Creators: name: Xiao, Yunlong
name: Jing, Naihuan
name: Yu, Bing
name: Fei, Shao-Ming
name: Li-Jost, Xianqing
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Learning physical properties of a quantum system is essential for the developments of quantum technologies. However, Heisenberg's uncertainty principle constrains the potential knowledge one can simultaneously have about a system in quantum theory. Aside from its fundamental significance, the mathematical characterization of this restriction, known as `uncertainty relation', plays important roles in a wide range of applications, stimulating the formation of tighter uncertainty relations. In this work, we investigate the fundamental limitations of variance-based uncertainty relations, and introduce several `near optimal' bounds for incompatible observables. Our results consist of two morphologically distinct phases: lower bounds that illustrate the uncertainties about measurement outcomes, and the upper bound that indicates the potential knowledge we can gain. Combining them together leads to an \emph{uncertainty interval}, which captures the essence of uncertainties in quantum theory. Finally, we have detailed how to formulate lower bounds for product-form variance-based uncertainty relations by employing entropic uncertainty relations, and hence built a link between different forms of uncertainty relations.
description: 7 pages, 4 figures; Final version with new title
title: Digital Campus Podcast - Episode 28 – Raising the BarCamp
Creators: name: Center For History And New Media
Publisher: name: George Mason University
Year: 2008

description: Originally published by the Center for History and New Media through the Digital Campus podcast (http://digitalcampus.tv). This work is licensed under a Creative Commons Attribution 3.0 United States License (http://creativecommons.org/licenses/by/3.0/us/).
description: Might there be an alternative to the conventional meetings and conferences academics, librarians, and museum professionals go to every year, where papers and panels—and often bored or distracted attendees—are the norm? This episode’s feature story tackles that question by looking back at the experience of THATCamp: The Humanities and Technology Camp, a less structured “unconference” [...]
Higher-dimensional attractors with absolutely continuous invariant probability
Creators: name: Bocker-Neto, Carlos
name: Bortolotti, Ricardo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Consider a dynamical system $T:\mathbb{T}\times \mathbb{R}^{d} \rightarrow \mathbb{T}\times \mathbb{R}^{d} $ given by $ T(x,y) = (E(x), C(y) + f(x))$, where $E$ is a linear expanding map of $\mathbb{T}$, $C$ is a linear contracting map of $\mathbb{R}^d$ and $f$ is in $C^2(\mathbb{T},\mathbb{R}^d)$. We prove that if $T$ is volume expanding and $u\geq d$, then for every $E$ there exists an open set $\mathcal{U}$ of pairs $(C,f)$ for which the corresponding dynamic $T$ admits an absolutely continuous invariant probability. A geometrical characteristic of transversality between self-intersections of images of $\mathbb{T}\times\{ 0 \}$ is present in the dynamic of the maps in $\mathcal{U}$. In addition, we give a condition between $E$ and $C$ under which it is possible to perturb $f$ to obtain a pair $(C,\tilde{f})$ in $\mathcal{U}$.
description: 19 pages
1/f noise of a tiny tunnel magnetoresistance sensor originated from a wide distribution of bath correlation time
Creators: name: Imamura, Hiroshi
name: Arai, Hiroko
name: Matsumoto, Rie
name: Yamaji, Toshiki
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Tunnel magnetoresistance (TMR) sensor is a highly sensitive magnetic field sensor and is expected to be applied in various fields, such as magnetic recording, industrial sensing, and bio-medical sensing. To improve the detection capability of TMR sensors in low frequency regime it is necessary to suppress the 1/f noise. We theoretically study 1/f noise of a tiny TMR sensor using the macrospin model. Starting from the generalized Langevin equation, 1/f noise power spectrum and the Hooge parameter are derived. The calculated Hooge parameter of a tiny TMR sensor is much smaller than that of a conventional TMR sensor with large junction area. The results provide a new perspective on magnetic 1/f noise and will be useful for improvement of TMR sensors.
description: 8 pages, 3 figures
Analysis of the coupled Navier-Stokes/Biot problem
Creators: name: Cesmelioglu, Aycil
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We analyze a weak formulation of the coupled problem defining the interac- tion between a free fluid and a poroelastic structure. The problem is fully dynamic and is governed by the time-dependent incompressible Navier-Stokes equations and the Biot equations. Under a small data assumption, existence and uniqueness results are proved and a priori estimates are provided.
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Kum Ling Him, Chow Gim Chee, Kum Young Jan, Kum York Hong, Kum Wei Toon, Chow Jang, Seto Yuey Mon, Lee Jow, Chow Sheck, Lee Hock Yin.
Geometry of the Gibbs measure for the discrete 2D Gaussian free field with scale-dependent variance
Creators: name: Ouimet, Frédéric
Publisher: name: arXiv
Year: 2017
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G70, 60G60, 60G15, 82B44

description: We continue our study of the scale-inhomogeneous Gaussian free field introduced in Arguin and Ouimet (2016). Firstly, we compute the limiting free energy on V_N and adapt a technique of Bovier and Kurkova (2004b) to determine the limiting two-overlap distribution. The adaptation was already successfully applied in the simpler case of Arguin and Zindy (2015), where the limiting free energy was computed for the field with two levels (in the center of V_N) and the limiting two-overlap distribution was determined in the homogeneous case. Our results agree with the analogous quantities for the Generalized Random Energy Model (GREM); see Capocaccia et al. (1987) and Bovier and Kurkova (2004a), respectively. Secondly, we show that the extended Ghirlanda-Guerra identities hold exactly in the limit. As a corollary, the limiting array of overlaps is ultrametric and the limiting Gibbs measure has the same law as a Ruelle probability cascade.
description: 52 pages, 6 figures
Poisson-Dirichlet statistics for the extremes of a randomized Riemann zeta function
Creators: name: Ouimet, Frédéric
Publisher: name: arXiv
Year: 2017
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 11M06, 60F05, 60G60, 60G70

description: In Arguin & Tai (2018), the authors prove the convergence of the two-overlap distribution at low temperature for a randomized Riemann zeta function on the critical line. We extend their results to prove the Ghirlanda-Guerra identities. As a consequence, we find the joint law of the overlaps under the limiting mean Gibbs measure in terms of Poisson-Dirichlet variables. It is expected that we can adapt the approach to prove the same result for the Riemann zeta function itself.
description: 15 pages, 1 figure
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Woo Ching, Sim Sheck Ming, Leong Jung, Jang Yee, Lim Man Mean, Lim Gim Nown, Lee Lin Suey, Mah Jung Shing, Gin Ming Fung, Moy Yow Kee.
Complete monotonicity of multinomial probabilities and its application to Bernstein estimators on the simplex
Creators: name: Ouimet, Frédéric
Publisher: name: arXiv
Year: 2018
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60C05, 62G05, 62G07, 33B15

description: Let $d\in \mathbb{N}$ and let $γ_i\in [0,\infty)$, $x_i\in (0,1)$ be such that $\sum_{i=1}^{d+1} γ_i = M\in (0,\infty)$ and $\sum_{i=1}^{d+1} x_i = 1$. We prove that \begin{equation*} a \mapsto \frac{Γ(aM + 1)}{\prod_{i=1}^{d+1} Γ(a γ_i + 1)} \prod_{i=1}^{d+1} x_i^{aγ_i} \end{equation*} is completely monotonic on $(0,\infty)$. This result generalizes the one found by Alzer (2018) for binomial probabilities ($d=1$). As a consequence of the log-convexity, we obtain some combinatorial inequalities for multinomial coefficients. We also show how the main result can be used to derive asymptotic formulas for quantities of interest in the context of statistical density estimation based on Bernstein polynomials on the $d$-dimensional simplex.
description: 7 pages, 0 figure
Condensate and superfluid fraction of homogeneous Bose gases in a self-consistent Popov approximation
Creators: name: Vianello, C.
name: Salasnich, L.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the condensate and superfluid fraction of a homogeneous gas of weakly interacting bosons in three spatial dimensions by adopting a self-consistent Popov approximation, comparing this approach with other theoretical schemes. Differently from the superfluid fraction, we find that at finite temperature the condensate fraction is a non-monotonic function of the interaction strength, presenting a global maximum at a characteristic value of the gas parameter, which grows as the temperature increases. This non-monotonic behavior has not yet been observed, but could be tested with the available experimental setups of ultracold bosonic atoms confined in a box potential. We clearly identify the region of parameter space that is of experimental interest to look for this behavior and provide explicit expressions for the relevant observables. Finite size effects are also discussed within a semiclassical approximation.
description: 11 pages, 3 figures, published in Scientific Reports, corrected a typo in the references
USING TECHNOLOGY IN THE PRIMARY CLASSROOM TO TEACH ENGLISH: ENHANCING ENGAGEMENT AND LEARNING OUTCOMES
Creators: name: Uzakova, Gozzal
Publisher: name: Zenodo
Year: 2024

description: This article explores the advantages and practical applications of using technology to teach English in primary classrooms. Digital tools such as educational apps, e-books, and multimedia resources have proven effective in enhancing student engagement, providing personalized learning experiences, and improving language retention among young learners. By integrating technology thoughtfully, teachers can create interactive, student-centered lessons that make language acquisition both accessible and enjoyable. This article discusses the benefits, recommended tools, best practices, and challenges involved in using technology for English language learning in primary education, highlighting how digital methods can complement traditional classroom practices.
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Mark Wing Chong, Leong YorkLeong Nuran Do, Ko Sair Jing, Deuing Wah Chew, Fong Gim Jong, Fong Him Gim, [Fong Sheok Lin], Law Chum, Hong Soon Shee.
A uniform $L^1$ law of large numbers for functions of i.i.d. random variables that are translated by a consistent estimator
Creators: name: de Micheaux, Pierre Lafaye
name: Ouimet, Frédéric
Publisher: name: arXiv
Year: 2018
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60F25

description: We develop a new $L^1$ law of large numbers where the $i$-th summand is given by a function $h(\cdot)$ evaluated at $X_i - θ_n$, and where $θ_n \circeq θ_n(X_1,X_2,\ldots,X_n)$ is an estimator converging in probability to some parameter $θ\in \mathbb{R}$. Under broad technical conditions, the convergence is shown to hold uniformly in the set of estimators interpolating between $θ$ and another consistent estimator $θ_n^{\star}$. Our main contribution is the treatment of the case where $|h|$ blows up at $0$, which is not covered by standard uniform laws of large numbers.
description: 10 pages, 1 figure
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Tsang Kee Him, Ng Kee Shee, Lee Lung Jim, Lee Chong Lum, Lee Woo Yit, Lee Chew, Won Foon, Won Sang Yuen, Chin Doy, Lee Won.
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Leong Fat Jung, Jung June Bing, Mark Joy, Wang Cheong, Young Leong Jan, Ho Doo On, Look Yee King, Luey Mon Fong, Luey Sair Yin.
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Jang Yuen Song, Lee Wat, Lee Luon, Chan Fong, Fung Ling, Chu Gim, Wong Lum, Mah Yong Yin, Ng Kong, Chow Ho Ying.
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Chow Gin Lun, [Chow Jone Shuh], Chow Shee Cheong, Mah Goon Yin, Mah Yip Ho, Mah Soon Ho, Wong Yon Kong, Gin Bing Sun, [Lum Board], [Ngan Foy Pei].
Road surface 3d reconstruction based on dense subpixel disparity map estimation
Creators: name: Fan, Rui
name: Ai, Xiao
name: Dahnoun, Naim
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Various 3D reconstruction methods have enabled civil engineers to detect damage on a road surface. To achieve the millimetre accuracy required for road condition assessment, a disparity map with subpixel resolution needs to be used. However, none of the existing stereo matching algorithms are specially suitable for the reconstruction of the road surface. Hence in this paper, we propose a novel dense subpixel disparity estimation algorithm with high computational efficiency and robustness. This is achieved by first transforming the perspective view of the target frame into the reference view, which not only increases the accuracy of the block matching for the road surface but also improves the processing speed. The disparities are then estimated iteratively using our previously published algorithm where the search range is propagated from three estimated neighbouring disparities. Since the search range is obtained from the previous iteration, errors may occur when the propagated search range is not sufficient. Therefore, a correlation maxima verification is performed to rectify this issue, and the subpixel resolution is achieved by conducting a parabola interpolation enhancement. Furthermore, a novel disparity global refinement approach developed from the Markov Random Fields and Fast Bilateral Stereo is introduced to further improve the accuracy of the estimated disparity map, where disparities are updated iteratively by minimising the energy function that is related to their interpolated correlation polynomials. The algorithm is implemented in C language with a near real-time performance. The experimental results illustrate that the absolute error of the reconstruction varies from 0.1 mm to 3 mm.
description: 11 pages, 16 figures, IEEE Transactions on Image Processing
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Wong Lung Yow, Jong Ka, [Mark Wack Sing], Seid Jim, Seid Yow Ying, Jin Lum, Lee Lum, Jay Lung Hoy, Jay Jin, [Jay Look].
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Mark Yuen King, Lee Chee, Lee Won Lung, Woo Nuey Ka, Woo Hong Nan, Woo Suey Fon, Woo Wing On, Kwan Jone Yim, Lee Ying Soon, Lee Ling Chong.
Large deviations and continuity estimates for the derivative of a random model of $\log |ζ|$ on the critical line
Creators: name: Arguin, Louis-Pierre
name: Ouimet, Frédéric
Publisher: name: arXiv
Year: 2018
Subjects: subject: Probability (math.PR)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11M06, 60F10, 60G60, 60G70

description: In this paper, we study the random field \begin{equation*} X(h) \circeq \sum_{p \leq T} \frac{\text{Re}(U_p \, p^{-i h})}{p^{1/2}}, \quad h\in [0,1], \end{equation*} where $(U_p, \, p ~\text{primes})$ is an i.i.d. sequence of uniform random variables on the unit circle in $\mathbb{C}$. Harper (2013) showed that $(X(h), \, h\in (0,1))$ is a good model for the large values of $(\log |ζ(\frac{1}{2} + i (T + h))|, \, h\in [0,1])$ when $T$ is large, if we assume the Riemann hypothesis. The asymptotics of the maximum were found in Arguin, Belius & Harper (2017) up to the second order, but the tightness of the recentered maximum is still an open problem. As a first step, we provide large deviation estimates and continuity estimates for the field's derivative $X'(h)$. The main result shows that, with probability arbitrarily close to $1$, \begin{equation*} \max_{h\in [0,1]} X(h) - \max_{h\in \mathcal{S}} X(h) = O(1), \end{equation*} where $\mathcal{S}$ a discrete set containing $O(\log T \sqrt{\log \log T})$ points.
description: 7 pages, 0 figure
OIKODOMOS: International Conference
Creators: name: Ooms, Tomas
name: Riddy, Paul
name: Scheerlinck, Kris
name: Verbeke, Johan
Publisher: name: Zenodo
Year: 2011
Subjects: subject: Architecture
subject: FOS: Civil engineering
subject: Architecture
subject: Urban studies
subject: Housing
subject: Environmental sustainability
subject: Education
subject: Learning
subject: Innovation
subject: Educational Technology/education

description: This report describes the process and the results of work package 5 which was dedicated to theorganization of the OIKODOMOS international conference and the associated activities: a virtualdiscussion forum preceding the conference and the proceedings with the papers presented.
B-field induced mixing between Langmuir waves and axions
Creators: name: Visinelli, Luca
name: Terças, Hugo
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present an analytic study of the dispersion relation for an isotropic magnetized plasma interacting with axions. We provide a quantitative picture of the electromagnetic plasma oscillations in both the ultrarelativistic and nonrelativistic regimes and considering both non-degenerate and degenerate media, accounting for the dispersion curves as a function of the plasma temperature and the ratio of the plasma phase velocity to the characteristic velocity of particles. We include the modifications on the Landau damping of plasma waves induced by the presence of the axion field, and we comment on the effects of damping on subluminal plasma oscillations.
description: 11 pages, 1 figure
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Gee Sew Jen, Jang Ark Chong, Wong Lai Yee, Ing Yow, Lee Moon Quing, Jong Chun, Jung Yew, Chin Kin Wing, Gee Yue Tip, Leong Poy.
Renewable Energy Electrification Investment Prospect for Sizu Island, Tanzania
Creators: name: Tarimo, Kelvin Wilbert
name: Kyessi, Michael
Publisher: name: Zenodo
Year: 2025
Subjects: CEPS Framework
MicroGridsPy
RAMP
Electricity
Tanzania
EMP-A

description: To achieve sustainable energy goals, renewable energy investment prospects coupled with an integrated Comprehensive Energy Planning Solution (CEPS) framework are vital for energy investment planning and implementation of the energy project under the localized energy need context.

The assessment involved a comparative analysis of various electrification scenarios, considering factors such as renewable energy integration and economic viability. MicrogridsPy was employed to model and simulate the performance of each scenario.

Scenario 1, which prioritizes a hybrid system comprising solar PV, battery storage, and generator technology, was identified as the most viable solution. This scenario offers a good balance between renewable energy utilization and economic viability.

The study highlights the importance of government interventions, including the development of a supportive policy framework, the establishment of financial incentives for renewable energy adoption, and the implementation of clear regulatory measures.
title: The Future of Personalized Brain Stimulation for the Treatment of Neuropsychiatric Disorders
Creators: name: Fredriksz, Madeline
Publisher: name: George Mason University
Year: 2021
Subjects: subject: Personalized neuroscience
subject: Brain stimulation
subject: Neuromodulation

description: Over a billion individuals worldwide suffer from neuropsychiatric disorders, many of which are resistant to traditional medications and therapy. Both invasive and non-invasive electrical stimulation have emerged as promising treatment options in recent years since they have been shown to attenuate neuropsychiatric symptoms by modulating the underlying abnormal brain network activity. However, neurological disorders manifest differently across individuals and the way brain activity and patient symptoms respond to stimulation is highly individualized. In addition, brain activity is not constant over an individual’s lifetime. Changes due to development, aging, and the progression of chronic conditions need to be taken into account. All of this reveals the need for personalized treatments that can adapt to brain activity dynamics.
Fast three-dimensional phase retrieval in propagation-based x-ray tomography
Creators: name: Thompson, Darren
name: Nesterets, Yakov I.
name: Pavlov, Konstantin M.
name: Gureyev, Timur
Publisher: name: arXiv
Year: 2018
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: The following paper describes a method for three-dimensional (3D) reconstruction of multi-material objects based on propagation-based X-ray phase-contrast tomography (PB-CT) with phase retrieval using the homogenous form of the Transport-of-Intensity equation (TIE-Hom). Unlike conventional PB-CT algorithms that perform phase retrieval of individual projections, the described post-reconstruction phase-retrieval method is applied in 3D to a localised region of the CT-reconstructed volume. We demonstrate via numerical simulations the accuracy and noise characteristics of the method under a variety of experimental conditions, comparing it to both conventional absorption tomography and two-dimensional (2D) TIE-Hom phase retrieval applied to projection images. The results indicate that the 3D post-reconstruction method generally achieves a modest improvement in noise suppression over existing PB-CT methods. It is also shown that potentially large computational gains over projection-based phase retrieval for multi-material samples are possible. In particular, constraining phase retrieval to a localised 3D region of interest reduces the overall computational cost and eliminates the need for multiple CT reconstructions and global 2D phase retrieval operations for each material within the sample.
description: 23 pages, 8 figures
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Wong Ng Shong, Wong Ng Chee, Wong Soot Yee, Lim Nuey, Lee Fong, [Jay Bing Wou], Lee Wha, Sit Jick, Wong Bing Pon, Wong Lung Wan.
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Yee Show Choi, [Chin Thon], Mah Kung Sun, Kwan Wing, Woo Kim, Lew Why Gee, Mah Jue Lee, Ko Chong, Jsang York Choi, [Chin Fai Shing].
title: An Inspired Identity: The Importance of the Performing Arts in Community Building
Creators: name: Fijalka, Michael
Publisher: name: George Mason University
Year: 2014
Subjects: subject: Performing arts
subject: Reston
subject: Reston Community Center

description: Building community through the performing arts seems to have been the main influence for the construction of the Reston Community Center at Hunters Woods, which was completed and opened in May, 1979, and included, in particular, a 275 square foot theater and rehearsal rooms. This suggests that the performing arts were an intentional key to building community in the still young town of Reston.
Regular subgroups with large intersection
Creators: name: Aragona, Riccardo
name: Civino, Roberto
name: Gavioli, Norberto
name: Scoppola, Carlo Maria
Publisher: name: arXiv
Year: 2018
Subjects: subject: Group Theory (math.GR)
subject: Cryptography and Security (cs.CR)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 20B35, 20D20, 94A60

description: In this paper we study the relationships between the elementary abelian regular subgroups and the Sylow $2$-subgroups of their normalisers in the symmetric group $\mathrm{Sym}(\mathbb{F}_2^n)$, in view of the interest that they have recently raised for their applications in symmetric cryptography.
Generalized multiscale finite element method for a strain-limiting nonlinear elasticity model
Creators: name: Fu, Shubin
name: Chung, Eric
name: Mai, Tina
Publisher: name: arXiv
Year: 2018
Subjects: subject: Numerical Analysis (math.NA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 65N30, 65N99

description: In this paper, we consider multiscale methods for nonlinear elasticity. In particular, we investigate the Generalized Multiscale Finite Element Method (GMsFEM) for a strain-limiting elasticity problem. Being a special case of the naturally implicit constitutive theory of nonlinear elasticity, strain-limiting relation has presented an interesting class of material bodies, for which strains remain bounded (even infinitesimal) while stresses can become arbitrarily large. The nonlinearity and material heterogeneities can create multiscale features in the solution, and multiscale methods are therefore necessary. To handle the resulting nonlinear monotone quasilinear elliptic equation, we use linearization based on the Picard iteration. We consider two types of basis functions, offline and online basis functions, following the general framework of GMsFEM. The offline basis functions depend nonlinearly on the solution. Thus, we design an indicator function and we will recompute the offline basis functions when the indicator function predicts that the material property has significant change during the iterations. On the other hand, we will use the residual based online basis functions to reduce the error substantially when updating basis functions is necessary. Our numerical results show that the above combination of offline and online basis functions is able to give accurate solutions with only a few basis functions per each coarse region and updating basis functions in selected iterations.
description: 19 pages, 2 figures, submitted to Journal of Computational and Applied Mathematics
Moments of the Riemann zeta function on short intervals of the critical line
Creators: name: Arguin, Louis-Pierre
name: Ouimet, Frédéric
name: Radziwiłł, Maksym
Publisher: name: arXiv
Year: 2019
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 60G70, 11M06, 60F10, 60G60

description: We show that as $T\to \infty$, for all $t\in [T,2T]$ outside of a set of measure $\mathrm{o}(T)$, $$ \int_{-(\log T)^θ}^{(\log T)^θ} |ζ(\tfrac 12 + \mathrm{i} t + \mathrm{i} h)|^β \mathrm{d} h = (\log T)^{f_θ(β) + \mathrm{o}(1)}, $$ for some explicit exponent $f_θ(β)$, where $θ> -1$ and $β> 0$. This proves an extended version of a conjecture of Fyodorov and Keating (2014). In particular, it shows that, for all $θ> -1$, the moments exhibit a phase transition at a critical exponent $β_c(θ)$, below which $f_θ(β)$ is quadratic and above which $f_θ(β)$ is linear. The form of the exponent $f_θ$ also differs between mesoscopic intervals ($-10$), a phenomenon that stems from an approximate tree structure for the correlations of zeta. We also prove that, for all $t\in [T,2T]$ outside a set of measure $\mathrm{o}(T)$, $$ \max_{|h| \leq (\log T)^θ} |ζ(\tfrac{1}{2} + \mathrm{i} t + \mathrm{i} h)| = (\log T)^{m(θ) + \mathrm{o}(1)}, $$ for some explicit $m(θ)$. This generalizes earlier results of Najnudel (2018) and Arguin et al. (2019) for $θ= 0$. The proofs are unconditional, except for the upper bounds when $θ> 3$, where the Riemann hypothesis is assumed.
description: 35 pages, 2 figures; Final version accepted for publication in Annals of Probability
Formal calculation of exchange effects on confined positronium
Creators: name: Tanzi, Giacomo Marlotti
name: Consolati, Giovanni
name: Castelli, Fabrizio
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Positronium atoms (Ps) are widely used as a probe to characterize voids or vacancies in non-metallic materials, where Ps annihilation lifetime is strongly modified by pickoff, depending on the size of the trapping cavity and on the appropriate outer electron density. The connection between these material characteristics and Ps annihilation lifetimes is usually based on models that do not consider the requirements of full electron indistinguishability, which must be taken into account for a correct description of pickoff annihilation processes. In this report we provide a formal theoretical framework in which exchange effects between Ps and surrounding electrons are introduced in a natural way, giving a clear and versatile picture of the various contributions to the Ps pickoff annihilation. Moreover, our results provide a simple explanation of the lowering of the contact density (the Ps-electron density at the positron position) as a direct consequence of the electrons indistinguishability, at variance with previous interpretation based on spatial deformations of Ps wavefunction. Calculations are performed within the "symmetry adapted perturbation theory" approach, and the results are compared with experimental data on Ps lifetimes of some polymers and molecular solids. Finally, introducing suitable approximations, we also recover early modeling and give a simple interpretation of Ps properties in subnanometric voids.
description: 16 pages, 7 figures