cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Middle East, semi-democracy and monarchy: a comparative analysis of Algeria, Jordan, and Morocco
Creators: name: Bestland, Tanis
Publisher: name: University of British Columbia
Year: 2009

description: Democratization in the Middle East has been fraught with pitfalls - the Islamist challenge, rentierism, and the weaknesses of democratic political culture, independent civil society and multipartisrn; yet democratization has become attractive (if not indeed necessary) to many regimes in the last decade or so, facing as they are legitimacy crises due to economic difficulties. This thesis explores the Middle Eastern experience with democratization through the analysis of three relevant case studies: Algeria, Jordan and Morocco. None of these countries is at present fully democratic, but all have experienced periods of semi-democratic rule - Jordan being the most successful to date, Algeria the least. The potential for transition from non-democracy to semi-democracy (and eventually democracy) and the factors which contribute to successful transition and consolidation of such new systems are the issues analyzed here. The theoretical literature on democratization is reviewed, with particular attention to cultural and economic factors, historical legacies, democratic transition and consolidation, elite behavior, the role of Islam, and political legitimacy. Comparative variations in levels of development tend not to be the best explanation for the relative success of the three case studies examined here. Instead, the factors determined to be most conducive to a stable, successful transition are a medium- to long-term time frame for the process, the presence of a pact between the government and the opposition (elite consensual unity), and the presence of a stable, legitimate institution to guide the process. Democratization in the Middle East also requires a decision by the regime on how to deal with Islamist groups/parties, and this decision always has important repercussions for the success of the process. In the cases of Jordan and Morocco legitimate authority has been found in the person of the king. Thus this thesis points out that the presence of a monarch in a democratizing society is likely to be a stabilizing force in the transition and, later, the consolidation of the democratic system. Scholars would thus be wise to explore further the potentialities of monarchy in democratization, as well as other ways that new democratic regimes might gain and maintain legitimacy.
PRIYA: A New Suite of Lyman-alpha Forest Simulations for Cosmology
Creators: name: Bird, Simeon
name: Fernandez, Martin
name: Ho, Ming-Feng
name: Qezlou, Mahdi
name: Monadi, Reza
name: Ni, Yueying
name: Chen, Nianyi
name: Croft, Rupert
name: Di Matteo, Tiziana
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the PRIYA suite of cosmological simulations, based on the code and hydrodynamic model of the ASTRID simulation, and designed for cosmological analyses of the Lyman-$α$ forest. Our simulation suite spans a $9$-dimensional parameter space, including $4$ cosmological parameters and $5$ astrophysical/thermal parameters. We have run $48$ low fidelity simulations with $1536^3$ particles in a $120$ Mpc/h box and $3$ high fidelity simulations with $3072^3$ particles in a $120$ Mpc/h box. All our simulations include a full physics model for galaxy formation, including supernova and AGN feedback, and thus also contain a realistic population of DLAs. We advance on earlier simulations suites by larger particle loads, by incorporating new physical models for patchy hydrogen and helium reionization, and by self-consistently incorporating a model for AGN feedback. We show that patchy helium reionization imprints an excess in the 1D flux power spectrum on large scales, which may allow future measurements of helium reionization bubble sizes. Simulation parameters are chosen based on a Latin hypercube design and a Gaussian process is used to interpolate to arbitrary parameter combinations. We build a multi-fidelity emulator for the 1D flux power spectrum and the mean IGM temperature. We show that our final interpolation error is $< 1\%$ and that our simulations produce a flux power spectrum converged at the percent level for $z=5.4$ - $2.2$. Our simulation suite will be used to interpret Lyman-$α$ forest 1D flux power spectra from SDSS and future DESI data releases.
description: 25 pages, 11 figures, matches version published in JCAP
Deadeye: A Novel Preattentive Visualization Technique Based on Dichoptic Presentation
Creators: name: Krekhov, Andrey
name: Krueger, Jens
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Preattentive visual features such as hue or flickering can effectively draw attention to an object of interest -- for instance, an important feature in a scientific visualization. These features appear to pop out and can be recognized by our visual system, independently from the number of distractors. Most cues do not take advantage of the fact that most humans have two eyes. In cases where binocular vision is applied, it is almost exclusively used to convey depth by exposing stereo pairs. We present Deadeye, a novel preattentive visualization technique based on presenting different stimuli to each eye. The target object is rendered for one eye only and is instantly detected by our visual system. In contrast to existing cues, Deadeye does not modify any visual properties of the target and, thus, is particularly suited for visualization applications. Our evaluation confirms that Deadeye is indeed perceived preattentively. We also explore a conjunction search based on our technique and show that, in contrast to 3D depth, the task cannot be processed in parallel.
description: 10 pages, 8 figures, journal
Investigating multiple solutions to boundary value problems in constrained minimal and non-minimal SUSY models
Creators: name: Meuser, Daniel
name: Voigt, Alexander
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2019
Subjects: new physics
supersymmetry
minimal supersymmetric standard model: parameter space
sparticle: mass spectrum
renormalization group
boundary condition

description: We investigate the physical origins of multiple solutions to boundary value problems in the fully constrained MSSM and NMSSM. We derive mathematical criteria that formulate circumstances under which multiple solutions can appear. Finally, we study the validity of the exclusion of the CMSSM in the presence of multiple solutions.
Letter from [F. Billings and Cochrane] to [Frank] Hewer. January 22, 1908
Creators: name: Billings, F.
name: Cochrane
Publisher: name: The University of British Columbia
Year: 2017

description: Letter to Frank Hewer from F. Billings and Cochrane, dated January 22, 1908, regarding release and conveyance of above noted properties.
R Function Related to Entanglement of Formation
Creators: name: Fei, Shao-Ming
name: Li-Jost, Xianqing
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: By investigating the convex property of the function R, appeared in computing the entanglement of formation for isotropic states in Phys. Rev. Lett. 85, 2625 (2000), and a tight lower bound of entanglement of formation for arbitrary bipartite mixed states in Phys. Rev. Lett. 95, 210501 (2005), we show analytically that the very nice results in these papers are valid not only for dimensions 2 and 3 but any dimensions.
description: 3 pages
Modelling the closest double degenerate system RXJ0806.3+1527 and its decreasing period
Creators: name: D'Antona, F.
name: Ventura, P.
name: Burderi, L.
name: Teodorescu, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In the hypothesis that the 5.4m binary RXJ0806.3+1527 consists of a low mass helium white dwarf (donor) transferring mass towards its more massive white dwarf companion (primary), we consider as possible donors white dwarfs which are the result of common envelope evolution occurring when the helium core mass of the progenitor giant was still very small (~ 0.2Msun), so that they are surrounded by a quite massive hydrogen envelope (~1/100Msun or larger), and live for a very long time supported by proton--proton burning. Mass transfer from such low mass white dwarfs very probably starts during the hydrogen burning stage, and the donor structure will remain dominated by the burning shell until it loses all the hydrogen envelope and begins transferring helium. We model mass transfer from these low mass white dwarfs, and show that the radius of the donor decreases while they shed the hydrogen envelope. This radius behavior, which is due to the fact that the white dwarf is not fully degenerate, has two important consequences on the evolution of the binary: 1) the orbital period decreases, with a timescale consistent with the period decrease of the binary RXJ0806.3+1527; 2) the mass transfer rate is a factor of about 10 smaller than from a fully degenerate white dwarf, easing the problem connected with the small X-ray luminosity of this object. The possibility that such evolution describes the system RXJ0806.3+1527 is also consistent with the possible presence of hydrogen in the optical spectrum of the star, whose confirmation would become a test of the model.
description: 13 pages, 4 figures, accepted for publication on ApJ, main journal
A simple, exact, model of quasi-single field inflation
Creators: name: Welling, Yvette Maria
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2019
Subjects: inflation
perturbation theory
cosmological model
field theory
bispectrum

description: In this note we present a simple but exact model of quasi-single field inflation \cite{Chen:2009zp, Chen:2009we}, in which the couplings between perturbations are completely controlled, and for instance can be made constant with any desired value. This provides a way to numerically implement quasi-single field inflation and to test its predictions in various regimes. We confirm that the numerics agree to good accuracy with the analytical predictions for the isosceles bispectrum and the full shape function.
Periodicity staircase in a Fe/Gd magnetic thin film
Creators: name: Singh, Arnab
name: Li, Junli
name: Montoya, Sergio A.
name: Morley, Sophie
name: Fischer, Peter
name: Kevan, Steve D.
name: Fullerton, Eric E.
name: Yao, Dao-Xin
name: Datta, Trinanjan
name: Roy, Sujoy
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Presence of multiple competing periodicities may result in a system to go through states with modulated periodicities, an example of which is the self-similar staircase-like structure called the Devil's staircase. Herein we report on a novel staircase structure of domain periodicity in an amorphous and achiral Fe/Gd magnetic thin film wherein the reciprocal space wavevector \textbf{Q} due to the ordered stripe domains does not evolve continuously, rather exhibits a staircase structure. Resonant X-ray scattering experiments show jumps in the periodicity of the stripe domains as a function of an external magnetic field. When resolved in components, the step change along Q$_x$ was found to be an integral multiple of a minimum step height of 7 nm, which resembles closely to the exchange length of the system. Modeling the magnetic texture in the Fe/Gd thin film as an achiral spin arrangement, we have been able to reproduce the steps in the magnetization using a Landau-Lifshitz spin dynamics calculation. Our results indicate that anisotropy and not the dipolar interaction is the dominant cause for the staircase pattern, thereby revealing the effect of achiral magnetism.
description: 10 pages, 5 figures
Electron-hole asymmetry in electron systems with orbital degeneracy and correlated hopping
Creators: name: Skorenkyy, Yu.
name: Kramar, O.
name: Dovhopyaty, Yu.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Microscopic models of electronic subsystems with orbital degeneracy of energy states and non-diagonal matrix elements of electron interactions (correlated hopping) are considered within the configuration-operator approach. Equations for arbitrary-temperature numerical calculation of the doublon concentration for the integer band filling $n=1$ at different forms of the model density of states are derived. The energy spectra obtained within the Green function method are discussed with special emphasis on the role of correlated hopping in transition from itinerant to localized behavior observed in vanadium Magneli phases V$_n$O$_{2n-1}$, transition-metal dichalcogenides NiS$_{2-x}$Se$_x$, fulleride A$_n$C$_{60}$ systems.
description: 10 pages, 4 figures
Real-Time Data Driven Wildland Fire Modeling
Creators: name: Beezley, Jonathan D.
name: Chakraborty, Soham
name: Coen, Janice L.
name: Douglas, Craig C.
name: Mandel, Jan
name: Vodacek, Anthony
name: Wang, Zhen
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We are developing a wildland fire model based on semi-empirical relations that estimate the rate of spread of a surface fire and post-frontal heat release, coupled with WRF, the Weather Research and Forecasting atmospheric model. A level set method identifies the fire front. Data are assimilated using both amplitude and position corrections using a morphing ensemble Kalman filter. We will use thermal images of a fire for observations that will be compared to synthetic image based on the model state.
description: 8 pages, 4 figures. ICCS 08
Search for GeV gamma-ray emission from SPT-CL J2012-5649 with six years of DAMPE data
Creators: name: Manna, Siddhant
name: Desai, Shantanu
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We search for gamma-ray emission from the galaxy cluster SPT-CL J2012-5649 in the energy range from 3 GeV to 1 TeV using the DArk Matter Particle Explorer (DAMPE) telescope. For our analysis, we use three different templates: point source, radial disk, and radial Gaussian. We do not detect a signal with significance $>3σ$ for any of these templates at any location within $R_{200}$ of the cluster center. We obtain 95\% C.L. upper limit on the energy flux ranging between $\sim 10^{-6}$ and $10^{-4} \rm{MeV~cm^{-2}~s^{-1}}$ depending on the energy range. These upper limits are consistent with a previously reported non-zero flux detected by Fermi-LAT at $6σ$ significance. This work represents the first proof of principle search for gamma-ray emission from a single galaxy cluster using DAMPE data.
description: 12 pages, 4 figures. Accepted for publication in JHEAP
Signatures of Ultralight Bosons in Compact Binary Inspiral and Outspiral
Creators: name: Cao, Yan
name: Tang, Yong
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Ultralight bosons are well-motivated particles from various physical and cosmological theories, and can be spontaneously produced during the superradiant process, forming a dense hydrogen-like cloud around the spinning black hole. After the growth saturates, the cloud slowly depletes its mass through gravitational-wave emission. In this work we study the orbit dynamics of a binary system containing such a gravitational atom saturated in various spin-0,1,2 superradiant states, taking into account both the effects of dynamical friction and the cloud mass depletion. We estimate the significance of mass depletion, finding that although dynamical friction could dominate the inspiral phase, it typically does not affect the outspiral phase driven by the mass depletion. Focusing on the large orbit radius, we investigate the condition to observe the outspiral, and the detectability of the cloud via pulsar-timing signal in the case of black hole-pulsar binary.
description: 17 pages, 10 figures
Anomalous charge transport in dodecaborides RB12 (R- Ho, Er, Tm, Lu)
Creators: name: Sluchanko, N.
name: Bogomolov, L.
name: Glushkov, V.
name: Demishev, S.
name: Ignatov, M.
name: Samarin1, N.
name: Sluchanko, D.
name: Levchenko, A.
name: Shitsevalova, N.
name: Flachbart, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: High precision measurements of Hall RH(T) and Seebeck S(T) coefficients have been carried out for the first time on single crystals of rare earth dodecaborides RB12 (R - Ho, Er, Tm, Lu) at temperatures 1.8 - 300K. Low temperature anomalies associated with antiferromagnetic phase transitions in HoB12, ErB12 and TmB12 compounds have been detected on the temperature dependencies of RH(T) and S(T). The estimated values of charge carriers mobility allowed us to conclude about the appreciable influence of spin fluctuations on the charge transport in these compounds with B12 atomic clusters.
Identifying and tracking bubbles and drops in simulations: a toolbox for obtaining sizes, lineages, and breakup and coalescence statistics
Creators: name: Chan, Wai Hong Ronald
name: Dodd, Michael S.
name: Johnson, Perry L.
name: Moin, Parviz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Knowledge of bubble and drop size distributions in two-phase flows is important for characterizing a wide range of phenomena, including combustor ignition, sonar communication, and cloud formation. The physical mechanisms driving the background flow also drive the time evolution of these distributions. Accurate and robust identification and tracking algorithms for the dispersed phase are necessary to reliably measure this evolution and thereby quantify the underlying mechanisms in interface-resolving flow simulations. The identification of individual bubbles and drops traditionally relies on an algorithm used to identify connected regions. This traditional algorithm can be sensitive to the presence of spurious structures. A cost-effective refinement is proposed to maximize volume accuracy while minimizing the identification of spurious bubbles and drops. An accurate identification scheme is crucial for distinguishing bubble and drop pairs with large size ratios. The identified bubbles and drops need to be tracked in time to obtain breakup and coalescence statistics that characterize the evolution of the size distribution, including breakup and coalescence frequencies, and the probability distributions of parent and child bubble and drop sizes. An algorithm based on mass conservation is proposed to construct bubble and drop lineages using simulation snapshots that are not necessarily from consecutive time-steps. These lineages are then used to detect breakup and coalescence events, and obtain the desired statistics. Accurate identification of large-size-ratio bubble and drop pairs enables accurate detection of breakup and coalescence events over a large size range. Together, these algorithms enable insights into the mechanisms behind bubble and drop formation and evolution in flows of practical importance.
description: Under review for the Journal of Computational Physics
Lexical elicitation: Body parts
Creators: name: Ramirez, Angela
name: Clem, Emily
name: Jung, Sihun
name: Lim, Jun Jie
name: Mayel, Milad
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: mvj

description: Elicitation of lexical items for body parts, focusing on parts relating to the face and head and including some possessed forms. Elicitation leaders: Jun Jie Lim (recordings 1, 2), Milad Mayel (recording 3)
Orbital graphs of infinite primitive permutation groups
Creators: name: Smith, Simon M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Group Theory (math.GR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: If $G$ is a group acting on a set $Ω$ and $α, β\in Ω$, the digraph whose vertex set is $Ω$ and whose arc set is the orbit $(α, β)^G$ is called an {\em orbital digraph} of $G$. Each orbit of the stabiliser $G_α$ acting on $Ω$ is called a {\it suborbit} of $G$. A digraph is {\em locally finite} if each vertex is adjacent to at most finitely many other vertices. A locally finite digraph $Γ$ has more than one end if there exists a finite set of vertices $X$ such that the induced digraph $Γ\setminus X$ contains at least two infinite connected components; if there exists such a set containing precisely one element, then $Γ$ has {\em connectivity one}. In this paper we show that if $G$ is a primitive permutation group whose suborbits are all finite, possessing an orbital digraph with more than one end, then $G$ has a primitive connectivity-one orbital digraph, and this digraph is essentially unique. Such digraphs resemble trees in many respects, and have been fully characterised in a previous paper by the author.
description: 20B15, 05C25
Exemplary Agriculture: Organic Farming and Urban/Rural Space in China
Creators: name: Cody, Sacha
Publisher: name: Canberra, ACT : The Australian National University
Year: 2016
Subjects: Alternative Food Movements
Anthropology/Ethnography
Consumer Culture
Exemplarity
Morality
Organic Farming
Postsocialist Nations
Urban/Rural Space
Shanghai
China

description: Exemplary agriculture is a grassroots alternative food movement in Shanghai, China and the surrounding countryside. At the movement’s centre are a group of 13 independent and small-scale organic farmers. This thesis outlines the movement’s formation and functioning, and discusses participants’ motivations and objectives. It also identifies relationships between movement activists and intellectuals, rural residents, volunteers on the farms and customers in the city. Exemplary agriculture is different to other alternative food movements because it is heavily influenced by the continuing legacies of state socialism. Two legacies in particular affect how exemplary agriculturalists think and act. The first is exemplarity, a form of morality and social governance that achieves order through leadership by example and the emulation of role models. Exemplarity and the promotion of role models has been a pillar of Chinese Communist Party policy since the 1940s. The second is the differentiation of the urban and the rural. The household registration system, established by the CCP in the 1950s, paved the way for the formation of powerful discourses of urban/rural difference. These discourses polarise the city and the countryside into discrete spaces and identities with clearly demarcated boundaries, privileging the urban. Exemplary agriculturalists worry about the health of Chinese society and want to provide alternatives. By growing organic produce in the countryside and selling to customers in the city, they want to relieve Chinese urbanites from anxiety caused by food safety concerns. At a deeper level, they want to influence urban attitudes toward rural China and improve relations between the two groups. Exemplary agriculturalists adopt principles derived from rural culture and call on others to emulate them. They encourage urban residents to apply these principles to their own lives, thereby facilitating alternative and better ways of city living. In short, they borrow from the rural to help the urban.
Image Based Artificial Intelligence in Wound Assessment: A Systematic Review
Creators: name: Anisuzzaman, D. M.
name: Wang, Chuanbo
name: Rostami, Behrouz
name: Gopalakrishnan, Sandeep
name: Niezgoda, Jeffrey
name: Yu, Zeyun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Efficient and effective assessment of acute and chronic wounds can help wound care teams in clinical practice to greatly improve wound diagnosis, optimize treatment plans, ease the workload and achieve health related quality of life to the patient population. While artificial intelligence (AI) has found wide applications in health-related sciences and technology, AI-based systems remain to be developed clinically and computationally for high-quality wound care. To this end, we have carried out a systematic review of intelligent image-based data analysis and system developments for wound assessment. Specifically, we provide an extensive review of research methods on wound measurement (segmentation) and wound diagnosis (classification). We also reviewed recent work on wound assessment systems (including hardware, software, and mobile apps). More than 250 articles were retrieved from various publication databases and online resources, and 115 of them were carefully selected to cover the breadth and depth of most recent and relevant work to convey the current review to its fulfillment.
description: 18 pages, 9 tables, 1 figure
On the hierarchical Bayesian modelling of frequency response functions
Creators: name: Dardeno, T. A.
name: Worden, K.
name: Dervilis, N.
name: Mills, R. S.
name: Bull, L. A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: For situations that may benefit from information sharing among datasets, e.g., population-based SHM of similar structures, the hierarchical Bayesian approach provides a useful modelling structure. Hierarchical Bayesian models learn statistical distributions at the population (or parent) and the domain levels simultaneously, to bolster statistical strength among the parameters. As a result, variance is reduced among the parameter estimates, particularly when data are limited. In this paper, a combined probabilistic FRF model is developed for a small population of nominally-identical helicopter blades, using a hierarchical Bayesian structure, to support information transfer in the context of sparse data. The modelling approach is also demonstrated in a traditional SHM context, for a single helicopter blade exposed to varying temperatures, to show how the inclusion of physics-based knowledge can improve generalisation beyond the training data, in the context of scarce data. These models address critical challenges in SHM, by accommodating benign variations that present as differences in the underlying dynamics, while also considering (and utilising), the similarities among the domains.
description: Published in Mechanical Systems and Signal Processing
Fundamental limits for realising quantum processes in spacetime
Creators: name: Vilasini, V.
name: Renner, Renato
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Understanding the interface between quantum and relativistic theories is crucial for fundamental and practical advances, especially given that key physical concepts such as causality take different forms in these theories. Bell's no-go theorem reveals limits on classical processes, arising from relativistic causality principles. Considering whether similar fundamental limits exist on quantum processes, we derive no-go theorems for quantum experiments realisable in classical background spacetimes. We account for general processes allowed by quantum theory, including those with indefinite causal order (ICO), which have also been the subject of recent experiments. Our first theorem implies that realisations of ICO processes that do not violate relativistic causality must involve the non-localization of systems in spacetime. The second theorem shows that for any such realisation of an ICO process, there exists a more fine-grained description in terms of a definite and acyclic causal order process. This enables a general reconciliation of quantum and relativistic notions of causality and, in particular, applies to experimental realisations of the quantum switch, a prominent ICO process. By showing what is impossible to achieve in classical spacetimes, these no-go results also offer insights into how causality and information processing may differ in future quantum experiments in relativistic regimes beyond classical spacetimes.
description: 5+6 pages (excluding references). Short version of arXiv:2203.11245 with additional discussions on experiments and spatio-temporal realisations, includes intuitive proof sketch of main results. A cross reference issue present in v1 has been fixed in v2
Implementing an electronic sideband offset lock for precision spectroscopy in radium
Creators: name: Rabga, Tenzin
name: Bailey, Kevin G.
name: Bishof, Michael
name: Booth, Donald W.
name: Dietrich, Matthew R.
name: Greene, John P.
name: Mueller, Peter
name: O'Connor, Thomas P.
name: Singh, Jaideep T.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate laser frequency stabilization with at least 6 GHz of offset tunability using an in-phase/quadrature (IQ) modulator to generate electronic sidebands (ESB) on a titanium sapphire laser at 714 nm and we apply this technique to the precision spectroscopy of $^{226}$Ra, and $^{225}$Ra. By locking the laser to a single resonance of a high finesse optical cavity and adjusting the lock offset, we determine the frequency difference between the magneto-optical trap (MOT) transitions in the two isotopes to be $2630.0\pm0.3$ MHz, a factor of 29 more precise than the previously available data. Using the known value of the hyperfine splitting of the $^{3}P_{1}$ level, we calculate the isotope shift for the $^{1}S_{0}$ to $^{3}P_{1}$ transition to be $2267.0\pm2.2$ MHz, which is a factor of 8 more precise than the best available value. Our technique could be applied to countless other atomic systems to provide unprecedented precision in isotope shift spectroscopy and other relative frequency comparisons.
Zero-Bias Conductance Through Side-Coupled Double Quantum Dots
Creators: name: Bonca, J.
name: Zitko, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Low temperature zero-bias conductance through two side-coupled quantum dots is investigated using Wilson's numerical renormalization group technique. A low-temperature phase diagram is computed. Near the particle-hole symmetric point localized electrons form a spin-singlet associated with weak conductance. For weak inter-dot coupling we find enhanced conductance due to the two-stage Kondo effect when two electrons occupy quantum dots. When quantum dots are populated with a single electron, the system enters Kondo regime with enhanced conductance. Analytical expressions for the width of the Kondo regime and the Kondo temperature in this regime are given.
description: to be published in the Proceedings of the NATO Advanced Research Workshop on "Electron Correlations in New Materials and Nanosystems" held in Yalta, Ukraine, 19 - 23 September 2005 (NATO Science Series II, Springer 2006)
Effect of covariate shift on multi-class classification of Fermi-LAT sources
Creators: name: Malyshev, Dmitry V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Probabilistic classification of unassociated Fermi-LAT sources using machine learning methods has an implicit assumption that the distributions of associated and unassociated sources are the same as a function of source parameters, which is not the case for the Fermi-LAT catalogs. The problem of different distributions of training and testing (or target) datasets as a function of input features (covariates) is known as the covariate shift. In this paper, we, for the first time, quantitatively estimate the effect of the covariate shift on the multi-class classification of Fermi-LAT sources. We introduce sample weights proportional to the ratio of unassociated to associated source probability density functions so that associated sources in areas, which are densely populated with unassociated sources, have more weight than the sources in areas with few unassociated sources. We find that the covariate shift has relatively little effect on the predicted probabilities, i.e., the training can be performed either with weighted or with unweighted samples, which is generally expected for the covariate shift problems. The main effect of the covariate shift is on the estimated performance of the classification. Depending on the class, the covariate shift can lead up to 10 - 20% reduction in precision and recall compared to the estimates, where the covariate shift is not taken into account.
description: 16 pages, 19 figures, results are available online at https://zenodo.org/doi/10.5281/zenodo.8140548, v2: update for the 4FGL-DR4 catalog, v3: published in RASTI
Joint SO(3)-Spectral Domain Filtering of Spherical Signals in the Presence of Anisotropic Noise
Creators: name: Aslam, Adeem
name: Khalid, Zubair
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: Information Theory (cs.IT)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: We present a joint SO(3)-spectral domain filtering framework using directional spatially localized spherical harmonic transform (DSLSHT), for the estimation and enhancement of random anisotropic signals on the sphere contaminated by random anisotropic noise. We design an optimal filter for filtering the DSLSHT representation of the noise-contaminated signal in the joint SO(3)-spectral domain. The filter is optimal in the sense that the filtered representation in the joint domain is the minimum mean square error estimate of the DSLSHT representation of the underlying (noise-free) source signal. We also derive a least-square solution for the estimate of the source signal from the filtered representation in the joint domain. We demonstrate the capability of the proposed filtering framework using the Earth topography map in the presence of anisotropic, zero-mean, uncorrelated Gaussian noise, and compare its performance with the joint spatial-spectral domain filtering framework.
description: 5 PAGES
A textual analysis and comparison of the Taketori monogatari and Cupid and psyche
Creators: name: Dubé, Joy Alexandra
Publisher: name: University of British Columbia
Year: 2009

description: My thesis is that texts are sites of competing discourse and ideological struggle. I employ the theoretical writings of Mikhail Bakhtin and James Clifford to analyze instances of "social heteroglossia," "reaccentuation" and "competing discourses" in my analyses of the Taketori Monogatari. a tenthcentury anonymous Japanese tale, and Cupid and Psyche, a second-century Latin tale by Apuleius. I investigate the socio-historical mini-world of the Taketori Monogatari to develop my argument that substrata of a native, Japanese, female shamanism enter into conflict with a Confucian state ideology and male emperor system which was officially adopted in Japan in the seventh century. I also uncover the figure of the Queen Mother of the West in Chinese Taoist texts which is transposed onto the figure of Kaguyahime, the protagonist of the Taketori Monogatari. In the ensuing transposition, the original Taoist content of the Chinese text is erased and subsumed into a non-religious, aesthetic effect. I view the Taketori Monogatari as a site of competing ideologies of religion, state and gendered politics a la Bakhtin and Clifford. In order to compare the Taketori Monogatari to Cupid and Psyche. I also analyze the socio-historical mini-world of Cupid and Psyche to uncover the struggle between Roman state religion and the Isis cult, and between the Isis cult, Christianity and magic. Class interests, nativism, and Platonic philosophy combine against the background of this struggle to produce a text which is reaccentuated by the power elite in later centuries, in socio-ideological contexts of nationalism and European colonial expansion. comment on the critical analyses of the Taketori Monogatari by two scholars—Michele Marra and Richard Okada-- to further develop my thesis that texts are sites of competing discourse. Marra's analysis comes closest to the Bakhtinian analysis of socio-ideological mini-worlds, while Okada's analysis is based on what Foucault terms the approach of the "traditional historian" who searches for origins. I investigate the twentieth-century psychoanalytical, literary commentaries of Erich Neumann and Hayao Kawai on Cupid and Psyche and, by extrapolation, the Taketori Monogatari. to expose the theoretical grounding of the psychoanalytical and literary approach to texts. I find it is firmly rooted in an age of orientalism, imperialism, sexism, nationalism and capitalist ideologies. I use the theoretical insights of Foucault, Homi Bhabha, Miyoshi Masao and Naoki Sakai to situate my analyses of texts as "literature" or as psychoanalytical truth.
Str-L Pose: Integrating Point and Structured Line for Relative Pose Estimation in Dual-Graph
Creators: name: Zhang, Zherong
name: Lin, Chunyu
name: Huang, Shujuan
name: Yang, Shangrong
name: Zhao, Yao
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Relative pose estimation is crucial for various computer vision applications, including Robotic and Autonomous Driving. Current methods primarily depend on selecting and matching feature points prone to incorrect matches, leading to poor performance. Consequently, relying solely on point-matching relationships for pose estimation is a huge challenge. To overcome these limitations, we propose a Geometric Correspondence Graph neural network that integrates point features with extra structured line segments. This integration of matched points and line segments further exploits the geometry constraints and enhances model performance across different environments. We employ the Dual-Graph module and Feature Weighted Fusion Module to aggregate geometric and visual features effectively, facilitating complex scene understanding. We demonstrate our approach through extensive experiments on the DeMoN and KITTI Odometry datasets. The results show that our method is competitive with state-of-the-art techniques.
Schooling Gender in Rural Pakistan: An Ethnographic study of the Primary School and its Role in Gender Construction
Creators: name: Channa, Abdul Razaque
Publisher: name: Canberra, ACT : The Australian National University
Year: 2016
Subjects: education
gender
gaze
panoptic
textbooks
policy

description: This thesis focuses on the contribution of schooling to gender construction in rural Sindh Province. It focuses on the Government Main Primary School Khuda Bukhsh Soomro. The school is in Shahdadkot, a rural town in Sindh Province, Pakistan. In principle, education is considered a means to provide knowledge in terms of literacy, numeracy and civic awareness. I analyse whether, in addition to the formal knowledge taught in the school or produced in and through textbooks, the schooling enables improved gender relations or merely strengthens the existing gendered norms of society. I analyse how gender is constructed amongst the students through disciplinary gaze and practices and through their own agency in more informal ways. Previous scholarly contributions regarding this topic are scarce. The unique offering this thesis present is an in-depth understanding of the construction of gender at the micro level of rural Pakistani society. In this context, despite the idealism of the Pakistan Constitution and government policies, textbooks and teachers do little to promote critical thinking and there is barely any space for questioning the dominant patriarchal gendered knowledge system, thus ultimately strengthening the already established gendered stereotypes. Although individual expression and educational gender equality is encouraged at the national policy level, rural schools in Pakistan essentially leave untouched the foundational structures of gender. This results in children largely seeing their future in terms of traditional Pakistani values. The thesis questions why it has proved so difficult to inculcate principles of gender equality into rural society. Theoretically, this thesis adds to the postmodern literature specifically regarding the Foucauldian work on panopticism, gazes and disciplinary practices. The gaze is generally focused on vision; but the ethnographic evidence presented here suggests that it also includes an aural dimension. Furthermore, my findings suggest that individuals have particular degrees of agency to negotiate gender identity and to make their voices heard. The discontinuous gaze enables pockets of resistance among boys and girls and alternative perspectives that create a hope that despite the conservatism of rural Pakistani society, schooling can encourage new options for both female and male children in constructing more positive and equal gender relations.
Letter from [J.E. McAllister] to N.H. Caesar, January 23, 1908
Creators: name: McAllister, John Edgar
Publisher: name: The University of British Columbia
Year: 2017

description: One letter to N.H. Caesar from J.E. McAllister (unsigned), dated January 23, 1908, regarding an agreement with Maddock Brothers, a land sale, and its affect on Caesar's assignment.
Planar hole-doping concentration and effective three-dimensional hole-doping concentration for single-layer high-$T_c$ superconductors
Creators: name: Honma, Tatsuya
name: Hor, Pei Herng
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Astrophysics (astro-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We propose that physical properties for the high temperature superconductors can be addressed by either a two-dimensional planar hole-doping concentration ($P_{pl}$) or an effective three-dimentional hole-doping concentration ($P_{3D}$). We find that superconducting transition temperature ($T_c$) exhibits a universal dome-shaped behavior in the $T_c$ $vs.$ $P_{3D}$ plot with a universal optimal doping concentration at $P_{3D}$ $\sim$ 1.6 $\times$ 10$^{21}$ cm$^{-3}$ for the single-layer high temperature superconductors.
description: 2pages, 2 figures, submitted to Physica C (Proceedings of M2S-HTSC VIII) ; Ref. 10 is revised
Elicitation: Greetings and useful phrases for elicitation
Creators: name: Ramirez, Angela
name: Clem, Emily
name: Jung, Sihun
name: Lim, Jun Jie
name: Mayel, Milad
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: mvj

description: Elicitation of greetings and some basic phrases to use in the elicitation process. Elicitation leader: Emily Clem
Exact extreme, order and sum statistics in a class of strongly correlated system
Creators: name: Biroli, Marco
name: Larralde, Hernán
name: Majumdar, Satya N.
name: Schehr, Grégory
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Even though strongly correlated systems are abundant, only a few exceptional cases admit analytical solutions. In this paper we present a large class of solvable systems with strong correlations.. We consider a set of $N$ independent and identically distributed (i.i.d) random variables $\{X_1,\, X_2,\ldots, X_N\}$ whose common distribution has a parameter $Y$ (or a set of parameters) which itself is random with its own distribution. For a fixed value of this parameter $Y$, the $X_i$ variables are independent and we call them conditionally independent and identically distributed (c.i.i.d). However, once integrated over the distribution of the parameter $Y$, the $X_i$ variables get strongly correlated, yet retaining a solvable structure for various observables, such as for the sum and the extremes of $X_i$'s. This provides a simple procedure to generate a class of solvable strongly correlated systems. We illustrate how this procedure works via three physical examples where $N$ particles on a line perform independent (i) Brownian motions, (ii) ballistic motions with random initial velocities, and (iii) Lévy flights, but they get strongly correlated via {\it simultaneous resetting} to the origin. Our results are verified in numerical simulations. This procedure can be used to generate an endless variety of solvable strongly correlated systems.
description: 26 pages, 9 figures
The wave equation on static singular space-times
Creators: name: Mayerhofer, Eberhard
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Mathematics (math.GM)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 83C75: 46F30, 35D05, 35Q75

description: The first part of my thesis lays the foundations to generalized Lorentz geometry. The basic algebraic structure of finite-dimensional modules over the ring of generalized numbers is investigated. The motivation for this part of my thesis evolved from the main topic, the wave equation on singular space-times. The second and main part of my thesis is devoted to establishing a local existence and uniqueness theorem for the wave equation on singular space-times. The singular Lorentz metric subject to our discussion is modeled within the special algebra on manifolds in the sense of Colombeau. Inspired by an approach to generalized hyperbolicity of conical-space times due to Vickers and Wilson, we succeed in establishing certain energy estimates, which by a further elaborated equivalence of energy integrals and Sobolev norms allow us to prove existence and uniqueness of local generalized solutions of the wave equation with respect to a wide class of generalized metrics. The third part of my thesis treats three different point value resp. uniqueness questions in algebras of generalized functions
description: 102 pages, 4 figures, PhD Thesis, concise introduction