cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Barrier-Certified Optimal Coordination Framework for Connected and Automated Vehicles
Creators: name: Chalaki, Behdad
name: Malikopoulos, Andreas A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: In this paper, we extend a framework that we developed earlier for coordination of connected and automated vehicles (CAVs) at a signal-free intersection by integrating a safety layer using control barrier functions. First, in our motion planning module, each CAV computes the optimal control trajectory using simple vehicle dynamics. The trajectory does not make any of the state, control, and safety constraints active. A vehicle-level tracking controller employs a combined feedforward-feedback control law to track the resulting optimal trajectory from the motion planning module. Then, a barrier-certificate module, acting as a middle layer between the vehicle-level tracking controller and physical vehicle, receives the control law from the vehicle-level tracking controller and using realistic vehicle dynamics ensures that none of the state, control, and safety constraints becomes active. The latter is achieved through a quadratic program, which can be solved efficiently in real time. We demonstrate the effectiveness of our extended framework through a numerical simulation.
description: 8 pages, 5 figures, 1 table
Transformations in narrative thought during late childhood and adolescence
Creators: name: Genereux, Randy Lee
Publisher: name: University of Calgary
Year: 1997
Subjects: subject: BF721 .G46 1997
subject: Additonal Copy: 370 EDC 1997 GEN in the Doucette Education Library
subject: Children - Ability testing.
subject: Children - Writing
subject: Storytelling ability in children

description: Bibliography: p. 140-150
description: UARC
Hubble constant and nuclear equation of state from kilonova spectro-photometric light curves
Creators: name: Pérez-García, M. A.
name: Izzo, L.
name: Barba, D.
name: Bulla, M.
name: Sagués-Carracedo, A.
name: Pérez, E.
name: Albertus, C.
name: Dhawan, S.
name: Prada, F.
name: Agnello, A.
name: Angus, C. R.
name: Bruun, S. H.
name: del Burgo, C.
name: Dominguez-Tagle, C.
name: Gall, C.
name: Goobar, A.
name: Hjorth, J.
name: Jones, D.
name: López-Sánchez, A. R.
name: Sollerman, J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The merger of two compact objects of which at least one is a neutron star is signalled by transient electromagnetic emission in a kilonova (KN). This event is accompanied by gravitational waves and possibly other radiation messengers such as neutrinos or cosmic rays. The electromagnetic emission arises from the radioactive decay of heavy $r-$process elements synthesized in the material ejected during and after the merger. In this paper we show that the analysis of KNe light curves can provide cosmological distance measurements and constrain the properties of the ejecta. In this respect, MAAT, the new Integral Field Unit in the OSIRIS spectrograph on the $10.4$ m Gran Telescopio CANARIAS (GTC), is well suited for the study of KNe by performing absolute spectro-photometry over the entire 3600-10000 Angstron spectral range. Here, we study the most representative cases regarding the scientific interest of KNe from binary neutron stars, and we evaluate the observational prospects and performance of MAAT on the GTC to do the following: a) study the impact of the equation of state on the KN light curve, and determine to what extent bounds on neutron star (NS) radii or compactness deriving from KN peak magnitudes can be identified and b) measure the Hubble constant, $H_0$, with precision improved by up to 40$\%$, when both gravitational wave data and photometric-light curves are used. In this context we discuss how the equation of state, the viewing angle, and the distance affect the precision and estimated value of $H_0$.
description: 21 pages, 23 figures, matches published version in A&A 666, A67 (2022)
Current-induced control of the polarization state in a polar metal based heterostructure SnSe/WTe$_2$
Creators: name: Orlova, N. N.
name: Timonina, A. V.
name: Kolesnikov, N. N.
name: Deviatov, E. V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The concept of a polar metal proposes new approach of current-induced polarization control for ferroelectrics. We fabricate SnSe/WTe$_2$ heterostructure to experimentally investigate charge transport between two ferroelectric van der Waals materials with different polarization directions. WTe$_2$ is a polar metal with out-of-plane ferroelectric polarization, while SnSe ferroelectric semiconductor is polarized in-plane, so one should expect complicated polarization structure at the SnSe/WTe$_2$ interface. We study $dI/dV(V)$ curves, which demonstrate sharp symmetric drop to zero $dI/dV$ differential conductance at some threshold bias voltages $\pm V_{th}$, which are nearly symmetric in respect to the bias sign. While the gate electric field is too small to noticeably affect the carrier concentration, the positive and negative threshold positions are sensitive to the gate voltage. Also, SnSe/WTe$_2$ heterostructure shows re-entrant transition to the low-conductive $dI/dV=0$ state for abrupt change of the bias voltage even below the threshold values. This behavior can not be observed for single SnSe or WTe$_2$ flakes, so we interpret it as a result of the SnSe/WTe$_2$ interface coupling. In this case, some threshold value of the electric field at the SnSe/WTe$_2$ interface is enough to drive 90$^\circ$ change of the initial SnSe in-plane polarization in the overlap region. The polarization mismatch leads to the significant interface resistance contribution, analogously to the scattering of the charge carriers on the domain walls. Thus, we demonstrate polarization state control by electron transport through the SnSe/WTe$_2$ interface.
Generalizing Boolean Satisfiability II: Theory
Creators: name: Dixon, H. E.
name: Ginsberg, M. L.
name: Luks, E. M.
name: Parkes, A. J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: This is the second of three planned papers describing ZAP, a satisfiability engine that substantially generalizes existing tools while retaining the performance characteristics of modern high performance solvers. The fundamental idea underlying ZAP is that many problems passed to such engines contain rich internal structure that is obscured by the Boolean representation used; our goal is to define a representation in which this structure is apparent and can easily be exploited to improve computational performance. This paper presents the theoretical basis for the ideas underlying ZAP, arguing that existing ideas in this area exploit a single, recurring structure in that multiple database axioms can be obtained by operating on a single axiom using a subgroup of the group of permutations on the literals in the problem. We argue that the group structure precisely captures the general structure at which earlier approaches hinted, and give numerous examples of its use. We go on to extend the Davis-Putnam-Logemann-Loveland inference procedure to this broader setting, and show that earlier computational improvements are either subsumed or left intact by the new method. The third paper in this series discusses ZAPs implementation and presents experimental performance results.
title: Mixed methods systematic reviews (LIEPP Fiches méthodologiques / LIEPP Methods briefs, n°32)
Creators: name: Hong, Quan Nha
Publisher: name: Sciences Po - LIEPP
Year: 2023
Subjects: classificationCode: 5
subject: FOS: Social sciences

description: Mixed methods systematic literature reviews, also named mixed studies reviews, consist of reviewing available work (including evaluations already carried out) on a given topic by incorporating studies using qualitative, quantitative and mixed methods. This type of literature review allows for a better understanding of complex interventions and phenomena. By encompassing a diversity of questions, they are particularly useful for informing public decision-making.
Illuminating spiky balls and cap bodies
Creators: name: Bezdek, Károly
name: Ivanov, Ilya
name: Strachan, Cameron
Publisher: name: arXiv
Year: 2022
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: The convex hull of a ball with an exterior point is called a spike (or cap). A union of finitely many spikes of a ball is called a spiky ball. If a spiky ball is convex, then we call it a cap body. In this note we upper bound the illumination numbers of $2$-illuminable spiky balls as well as centrally symmetric cap bodies. In particular, we prove the Illumination Conjecture for centrally symmetric cap bodies in sufficiently large dimensions by showing that any $d$-dimensional centrally symmetric cap body can be illuminated by $<2^d$ directions in Euclidean $d$-space for all $d\geq 20$. Furthermore, we strengthen the latter result for $1$-unconditionally symmetric cap bodies.
description: 13 pages, 6 figures
Adenosine, not the endogenous opiods, mediates the "regulated" decrease in core temperature that occurs in both newborn and older guinea pids during acute hypxemia
Creators: name: Crisanti, Kim Carolyn
Publisher: name: University of Calgary
Year: 1998
Subjects: subject: QP625 A.27 C76 1998
subject: Adenosine--Physiological effect.
subject: Anoxemia

description: Bibliography: p. 141-158
Transient dust in warm debris disks - Detection of Fe-rich olivine grains
Creators: name: Olofsson, Johan
name: Juhasz, Attila
name: Henning, Thomas
name: Mutschke, Harald
name: Tamanai, Akemi
name: Moor, Attila
name: Abraham, Peter
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: (Abridged) Debris disks trace remnant reservoirs of leftover planetesimals in planetary systems. A handful of "warm" debris disks have been discovered in the last years, where emission in excess starts in the mid-infrared. An interesting subset within these warm debris disks are those where emission features are detected in mid-IR spectra, which points towards the presence of warm micron-sized dust grains. Given the ages of the host stars, the presence of these grains is puzzling, and questions their origin and survival in time. This study focuses on determining the mineralogy of the dust around 7 debris disks with evidence for warm dust, based on Spitzer/IRS spectroscopic data, in order to provide new insights into the origin of the dust grains. We present a new radiative transfer code dedicated to SED modeling of optically thin disks. We make use of this code on the SEDs of seven warm debris disks, in combination with recent laboratory experiments on dust optical properties. We find that most, if not all, debris disks in our sample are experiencing a transient phase, suggesting a production of small dust grains on relatively short timescales. From a mineralogical point of view, we find that enstatite grains have small abundances compared to crystalline olivine grains. The main result of our study is that we find evidences for Fe-rich crystalline olivine grains (Fe / [Mg + Fe] ~ 0.2) for several debris disks. This finding contrasts with studies of gas-rich protoplanetary disks. The presence of Fe-rich olivine grains, and the overall differences between the mineralogy of dust in Class II disks compared to debris disks suggest that the transient crystalline dust is of a new generation. We discuss possible crystallization routes to explain our results, and comment on the mechanisms that may be responsible for the production of small dust grains.
title: Les revues de littérature systématiques mixtes (LIEPP Fiches méthodologiques / LIEPP Methods briefs, n°31)
Creators: name: Hong, Quan Nha
Publisher: name: Sciences Po - LIEPP
Year: 2023
Subjects: classificationCode: 5
subject: FOS: Social sciences

description: Les revues de littérature systématiques mixtes consistent à procéder à un examen systématique et à dresser un bilan des travaux disponibles (et notamment des évaluations déjà réalisées) sur un sujet donné, en intégrant des travaux mobilisant des méthodes qualitatives, quantitatives et mixtes. Ce type de revue de littérature permet notamment une meilleure compréhension des interventions et phénomènes complexes. En englobant une diversité de questions évaluatives, elle est particulièrement utile pour éclairer la prise de décision publique.
title: Évaluation Réaliste (LIEPP Fiches méthodologiques / LIEPP Methods briefs, n°33)
Creators: name: Louart, Sarah
name: Baldé, Habibata
name: Robert, Emilie
name: Ridde, Valery
Publisher: name: Sciences Po - LIEPP
Year: 2023
Subjects: classificationCode: 5
subject: FOS: Social sciences

description: L’évaluation réaliste est fondée sur une conception des politiques publiques comme des interventions qui produisent leurs effets par le biais de mécanismes qui ne se déclenchent que dans des contextes spécifiques. L’analyse de ces liens entre des contextes, des mécanismes et des effets est donc au cœur de cette approche. Celle-ci peut prendre appui sur une diversité de méthodes, mais va dans tous les cas avoir recours à des méthodes qualitatives pour investiguer les mécanismes en jeu. Relevant de la famille des évaluations basées sur la théorie, l’évaluation réaliste aspire à produire des théories de moyenne portée permettant notamment de faciliter le transfert des connaissances produites sur l’intervention étudiée à d’autres contextes ou d’autres interventions du même type.
Gate Stack Dielectric Degradation of Rare-Earth Oxides Grown on High Mobility Ge Substrates
Creators: name: Rahman, Md. Shahinur
name: Evangelou, Evangelos K.
name: Konofaos, Nikos
name: Dimoulas, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We report on the dielectric degradation of Rare-Earth Oxides (REOs), when used as interfacial buffer layers together with HfO2 high-k films (REOs/HfO2) on high mobility Ge substrates. Metal-Oxide-Semiconductor (MOS) devices with these stacks,show dissimilar charge trapping phenomena under varying levels of Constant- Voltage-Stress (CVS) conditions, which also influences the measured densities of the interface (Nit) and border (NBT) traps. In the present study we also report on C-Vg hysteresis curves related to Nit and NBT. We also propose a new model based on Maxwell-Wagner instabilities mechanism that explains the dielectric degradations (current decay transient behavior) of the gate stack devices grown on high mobility substrates under CVS bias from low to higher fields, and which is unlike to those used for other MOS devices. Finally, the time dependent degradation of the corresponding devices revealed an initial current decay due to relaxation, followed by charge trapping and generation of stress-induced leakage which eventually lead to hard breakdown after long CVS stressing.
description: 19pages (double space), 7 figures, original research article, Submitted to JAP (AIP)
Linear Battery Models for Power Systems Analysis
Creators: name: Pozo, David
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: Mathematical models are just models. The desire to describe battery energy storage system (BESS) operation using computationally tractable model formulations has motivated a long-standing discussion in both the scientific and industrial communities. Linear BESS models are the most widely used so far. However, finding suitable linear BESS models has been controversial. This paper focuses on the description of linear BESS models. Four linear BESS formulations are presented, among the most popularly used. A new formulation is also proposed. The 5 BESS models are tested in 100 random BESS and 1.450 random samples of daily profiles of renewable generation. Two classical problems of power systems, namely, the set-point tracking problem and the transmission expansion planning problem, are selected for numerical analysis. Five thousand simulations are used to draw a better interpretation of each linear formulation presented and showcase specific challenges of BESS models. Practical recommendations are provided based on the findings.
description: Power Systems Computation Conference (PSCC) 2022
Recent Heavy Ion Results with the ATLAS Detector at the LHC
Creators: name: Steinberg, Peter
name: Collaboration, ATLAS
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Results are presented from the ATLAS collaboration from the 2010 LHC heavy ion run, during which nearly 10 inverse microbarns of luminosity were delivered. Soft physics results include charged particle multiplicities and collective flow. The charged particle multiplicity, which tracks initial state entropy production, increases by a factor of two relative to the top RHIC energy, with a centrality dependence very similar to that already measured at RHIC. Measurements of elliptic flow out to large transverse momentum also show similar results to what was measured at RHIC, but no significant pseudorapidity dependence. Extensions of these measurements to higher harmonics have also been made, and can be used to explain structures in the two-particle correlation functions that had long been attributed to jet-medium interactions. New hard probe measurements include single muons, jets and high $p_T$ hadrons. Single muons at high momentum are used to extract the yield of $W^{\pm}$ bosons and are found to be consistent within statistical uncertainties with binary collision scaling. Conversely, jets are found to be suppressed in central events by a factor of two relative to peripheral events, with no significant dependence on the jet energy. Fragmentation functions are also found to be the same in central and peripheral events. Finally, charged hadrons have been measured out to 30 GeV, and their centrality dependence relative to peripheral events is similar to that found for jets.
description: 9 pages, 9 figures, proceedings for Quark Matter 2011, Annecy, France, May 23-28, 2011
Combined explanation of $W$-mass, muon $g-2$, $R_{K^{(*)}}$ and $R_{D^{(*)}}$ anomalies in a singlet-triplet scalar leptoquark model
Creators: name: Bhaskar, Arvind
name: Madathil, Anirudhan A.
name: Mandal, Tanumoy
name: Mitra, Subhadip
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In addition to the long-standing anomalies seen in the muon $g-2$, $R_{K^{(*)}}$, and $R_{D^{(*)}}$ observables by various independent experiments, the CDF Collaboration has found another significant one in the $W$-boson mass. These anomalies might be intertwined at a fundamental level and have a single new-physics explanation. In this paper, we present a simultaneous solution to these anomalies with two scalar leptoquarks of roughly equal mass -- one weak-singlet $S_1$ and the other a weak-triplet $S_3$ -- which mix through a Higgs portal. The solution has only a few new couplings and TeV-scale leptoquarks, making the solution testable at the LHC. We put a lower and upper bound on the leptoquark masses in this setup from the current LHC data and the assumption that all new couplings are within the perturbative limit.
description: Nine pages, three figures, and one table. Improved analysis with LHC and other relevant bounds
Dense Molecular Gas in Nearby Gas-rich Active Galaxies
Creators: name: Jiang, Xuejian
name: Wang, Junzhi
name: Gu, Qiusheng
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present 3 mm observations obtained with the IRAM 30-m telescope for ten nearby gas-rich active galaxies spanning three orders of magnitude in infrared luminosity. Emission lines of HCO+(1-0), HCN(1-0), and C2H(1-0) were simultaneously detected in most galaxies of our sample. We also tentatively detected the rare isotopic species, H13CN, HC15N and H13CO+ in up to four galaxies (IC 694, NGC 3690, NGC 4258 and NGC 6240). Our estimation shows that the optical depth of HCN is low to moderate in these galaxies (tau ~ 1-5). After comparing the intensity ratios of different molecular emission lines (HCN/HCO+, C2H/HCN, and C2H/HCO+) with the infrared luminosity (LIR), we find that in the infrared luminous sample of five composite (AGN+Starburst) galaxies, these ratios vary with LIR: the HCN/HCO+ ratio increases with LIR, which is consistent with previous studies, while there is a slight trend in the composite galaxies that both C2H/HCN and C2H/HCO+ ratios decrease with increasing LIR. Although our sample is limited, this trend may possibly imply a relation between the overall gas density and the infrared luminosity of galaxies.
description: 12 pages, 7 figures, accepted for publication in MNRAS
Finesse into Mess: entropy as metaphor in the queer poetics of Erin Moure
Creators: name: Fitzgerald, Heather
Publisher: name: University of Calgary
Year: 1997
Subjects: subject: PS8564.O84 Z64 1997
subject: Moure, Erin, 1955 - Criticism and interpretation

description: Bibliography: p. 136-143
description: UARC
An orthogonal approach to algebraic weak factorisation systems
Creators: name: Bourke, John
Publisher: name: arXiv
Year: 2022
Subjects: subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 18A32, 18N10

description: We describe an equivalent formulation of algebraic weak factorisation systems, not involving monads and comonads, but involving double categories of morphisms equipped with a lifting operation satisfying lifting and factorisation axioms.
description: Added intro to double categories and discussion of homotopical examples. Journal version
title: Realist Evaluation (LIEPP Fiches méthodologiques / LIEPP Methods briefs, n°34)
Creators: name: Louart, Sarah
name: Baldé, Habibata
name: Robert, Emilie
name: Ridde, Valery
Publisher: name: Sciences Po - LIEPP
Year: 2023
Subjects: classificationCode: 5
subject: FOS: Social sciences

description: Realist evaluation is based on a conception of public policies as interventions that produce their outcomes through mechanisms that are only triggered in specific contexts. The analysis of these links between contexts, mechanisms and outcomes is therefore at the heart of this approach. This approach can be based on a variety of methods, but will in all cases use qualitative methods to investigate the mechanisms involved. Belonging to the family of theory-based evaluations, realist evaluation aspires to produce middle range theories that will facilitate the transfer of the knowledge produced on the intervention under study to other contexts or other interventions of the same type.
Spontaneous coherence of indirect excitons in a trap
Creators: name: High, Alexander A.
name: Leonard, Jason R.
name: Remeika, Mikas
name: Butov, Leonid V.
name: Hanson, Micah
name: Gossard, Arthur C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We report on the emergence of spontaneous coherence in a gas of indirect excitons in an electrostatic trap. At low temperatures, the exciton coherence length becomes much larger than the thermal de Broglie wavelength and reaches the size of the exciton cloud in the trap.
description: 4 pages, 4 figures
title: Comparaisons de niveau macro (LIEPP Fiches méthodologiques / LIEPP Methods briefs, n°36)
Creators: name: Ferragina, Emanuele
Publisher: name: Sciences Po - LIEPP
Year: 2023
Subjects: classificationCode: 5
subject: FOS: Social sciences

description: Les comparaisons de niveau macro sont une approche qui exploite les variations et les similitudes entre de grandes unités d'analyse macrosociales (par exemple, des États, des régions, des provinces) pour étudier différents phénomènes sociaux. Les études peuvent être entreprises à différentes échelles et à des fins diverses, par exemple pour décrire les différences de niveau macro entre différents États, ou pour évaluer l'influence d'une structure différente de l'État providence sur les résultats individuels (tels que les niveaux de chômage, l'espérance de vie, etc.).
A Framework for Sequential Planning in Multi-Agent Settings
Creators: name: Doshi, P.
name: Gmytrasiewicz, P. J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: This paper extends the framework of partially observable Markov decision processes (POMDPs) to multi-agent settings by incorporating the notion of agent models into the state space. Agents maintain beliefs over physical states of the environment and over models of other agents, and they use Bayesian updates to maintain their beliefs over time. The solutions map belief states to actions. Models of other agents may include their belief states and are related to agent types considered in games of incomplete information. We express the agents autonomy by postulating that their models are not directly manipulable or observable by other agents. We show that important properties of POMDPs, such as convergence of value iteration, the rate of convergence, and piece-wise linearity and convexity of the value functions carry over to our framework. Our approach complements a more traditional approach to interactive settings which uses Nash equilibria as a solution paradigm. We seek to avoid some of the drawbacks of equilibria which may be non-unique and do not capture off-equilibrium behaviors. We do so at the cost of having to represent, process and continuously revise models of other agents. Since the agents beliefs may be arbitrarily nested, the optimal solutions to decision making problems are only asymptotically computable. However, approximate belief updates and approximately optimal plans are computable. We illustrate our framework using a simple application domain, and we show examples of belief updates and value functions.
Reduced effective magnetization and damping by slowly-relaxing impurities in strained $γ$-$\mathrm{Fe_2O_3}$ thin films
Creators: name: Müller, Manuel
name: Scheufele, Monika
name: Gückelhorn, Janine
name: Flacke, Luis
name: Weiler, Mathias
name: Huebl, Hans
name: Geprägs, Stephan
name: Gross, Rudolf
name: Althammer, Matthias
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the static and dynamic magnetic properties of epitaxially strained $γ$-$\mathrm{Fe_2O_3}$ (maghemite) thin films grown via pulsed-laser deposition on MgO substrates by SQUID magnetometry and cryogenic broadband ferromagnetic resonance experiments. SQUID magnetometry measurements reveal hysteretic magnetization curves for magnetic fields applied both in- and out of the sample plane. From the magnetization dynamics of our thin films, we find a small negative effective magnetization in agreement with a strain induced perpendicular magnetic anisotropy. Moreover, we observe a non-linear evolution of the ferromagnetic resonance-linewidth as function of the microwave frequency and explain this finding with a model based on slowly relaxing impurities, the so-called slow relaxor model. By investigating the magnetization dynamics in our maghemite thin films as a function of frequency and temperature, we can isolate the temperature dependent contribution of the slowly relaxing impurities to the resonance linewidth and, in particular, observe a sign change in the effective magnetization. This finding provides evidence for a transition of the magnetic anisotropy from a perpendicular easy axis to an easy in-plane anisotropy for reduced temperatures.
description: 10 pages, 8 figures
Network location and clustering of genetic mutations determine chronicity in a stylized model of genetic diseases
Creators: name: Nyczka, Piotr
name: Falk, Johannes
name: Hütt, Marc-Thorsten
Publisher: name: arXiv
Year: 2022
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: In a highly simplified view, a disease can be seen as the phenotype emerging from the interplay of genetic predisposition and fluctuating environmental stimuli. We formalize this situation in a minimal model, where a network (representing cellular regulation) serves as an interface between an input layer (representing environment) and an output layer (representing functional phenotype). Genetic predisposition for a disease is represented as a loss of function of some network nodes. Reduced, but non-zero, output indicates disease. The simplicity of this genetic disease model and its deep relationship to percolation theory allows us to understand the interplay between disease, network topology and the location and clusters of affected network nodes. We find that our model generates two different characteristics of diseases, which can be interpreted as chronic and acute diseases. In its stylized form, our model provides a new view on the relationship between genetic mutations and the type and severity of a disease.
Wafer-scale nanofabrication of telecom single-photon emitters in silicon
Creators: name: Hollenbach, M.
name: Klingner, N.
name: Jagtap, N. S.
name: Bischoff, L.
name: Fowley, C.
name: Kentsch, U.
name: Hlawacek, G.
name: Erbe, A.
name: Abrosimov, N. V.
name: Helm, M.
name: Berencén, Y.
name: Astakhov, G. V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A highly promising route to scale millions of qubits is to use quantum photonic integrated circuits (PICs), where deterministic photon sources, reconfigurable optical elements, and single-photon detectors are monolithically integrated on the same silicon chip. The isolation of single-photon emitters, such as the G centers and W centers, in the optical telecommunication O-band, has recently been realized in silicon. In all previous cases, however, single-photon emitters were created uncontrollably in random locations, preventing their scalability. Here, we report the controllable fabrication of single G and W centers in silicon wafers using focused ion beams (FIB) with a probability exceeding 50%. We also implement a scalable, broad-beam implantation protocol compatible with the complementary-metal-oxide-semiconductor (CMOS) technology to fabricate single telecom emitters at desired positions on the nanoscale. Our findings unlock a clear and easily exploitable pathway for industrial-scale photonic quantum processors with technology nodes below 100 nm.
description: 8 pages, 4 figures
Explaining the Fundamental Concepts of Transaction Processing Mechanism within a DBMS
Creators: name: Iqbal, Farhan Nadim
Publisher: name: Zenodo
Year: 2023
Subjects: Information Technology
Computer Science
Databases
Relational Database
Relational Database Management Systems
RDBMS
Computer Science Engineering
Transaction Processing System
TPS

description: Imagine you've just transferred $900 to your mom via PayPal/Venmo, or perhaps you've found an item you love on Amazon and purchased it with your credit card. Maybe you're a store manager who has received a payment that automatically triggers the dispatch of products to your customers. These are just a few examples of how a system can perform such tasks. This is made possible by a Transaction Processing System (TPS). This article provides a concise overview of how this system operates.
Invariants of knots and links at roots of unity
Creators: name: Bishler, Liudmila
name: Mironov, Andrei
name: Morozov, Andrey
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a comprehensive classification of invariants of knots and links associated with irreducible representations of \uqslN{}, when the parameter of quantization $q$ is a root of unity. We demonstrate that, besides the standard HOMFLY-PT invariants, which are associated with representations with highest and lowest weights, non-trivial invariants can be associated only with nilpotent representations with parameters. We define the corresponding invariants and discuss their relations with standard invariants at particular values of parameters.
description: 26 pages, 12 figures
Linear instability of turbulent channel flow
Creators: name: Kashyap, Pavan V.
name: Duguet, Yohann
name: Dauchot, Olivier
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Laminar-turbulent pattern formation is a distinctive feature of the intermittency regime in subcritical plane shear flows. By performing extensive numerical simulations of the plane channel flow, we show that the pattern emerges from a spatial modulation of the turbulent flow, due to a linear instability. We sample over many realizations the linear response of the fluctuating turbulent field to a temporal impulse, in the regime where the turbulent flow is stable, just before the onset of the instability. The dispersion relation is constructed from the ensemble-averaged relaxation rates. As the instability threshold is approached, the relaxation rate of the least damped modes eventually reaches zero. The method allows, despite the presence of turbulent fluctuations and without any closure model, for an accurate estimation of the wavevector of the modulation at onset.
description: 5 pages, 4 figures
Structural equation modeling of the WISC-III: a developmental approach
Creators: name: Miles, Carol A.
Publisher: name: University of Calgary
Year: 1998
Subjects: subject: LB1132 .W47 M55 1998
subject: Additional Copy: 370 EDC 1998 MIL in the Doucette Education Library
subject: Wechsler Intelligence Scale for Children
subject: Ability - Testing
subject: Psychological tests

description: Bibliography: p. 243-262
Analysis strategy for the SM Higgs boson search in the four-lepton final state in CMS
Creators: name: Graziano, Alberto
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The current status of the searches for the SM Higgs boson in the $H$$\rightarrow$$ZZ^{(*)}$$\rightarrow$$4\ell$ decay channel with the CMS experiment is presented. The selection cuts for suppressing the backgrounds while keeping very high signal efficiencies are described, along with the data-driven algorithms implemented to estimate the background yields and the systematic uncertainties. With an integrated luminosity of $1.66 \mathrm{fb}^{-1}$, upper limits at 95% CL on the SM-like Higgs cross section $\times$ branching ratio exclude cross sections from about one to two times the expected value from the Standard Model in the range $150 < m_{H} < 420 \mathrm{GeV}$. No evidence for the existence of the SM Higgs boson has been found so far.
description: "Presented at the 2011 Hadron Collider Physics symposium (HCP-2011), Paris, France, November 14-18 2011, 3 pages, 5 figures."
Beyond Barren Plateaus: Quantum Variational Algorithms Are Swamped With Traps
Creators: name: Anschuetz, Eric R.
name: Kiani, Bobak T.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: One of the most important properties of classical neural networks is how surprisingly trainable they are, though their training algorithms typically rely on optimizing complicated, nonconvex loss functions. Previous results have shown that unlike the case in classical neural networks, variational quantum models are often not trainable. The most studied phenomenon is the onset of barren plateaus in the training landscape of these quantum models, typically when the models are very deep. This focus on barren plateaus has made the phenomenon almost synonymous with the trainability of quantum models. Here, we show that barren plateaus are only a part of the story. We prove that a wide class of variational quantum models -- which are shallow, and exhibit no barren plateaus -- have only a superpolynomially small fraction of local minima within any constant energy from the global minimum, rendering these models untrainable if no good initial guess of the optimal parameters is known. We also study the trainability of variational quantum algorithms from a statistical query framework, and show that noisy optimization of a wide variety of quantum models is impossible with a sub-exponential number of queries. Finally, we numerically confirm our results on a variety of problem instances. Though we exclude a wide variety of quantum algorithms here, we give reason for optimism for certain classes of variational algorithms and discuss potential ways forward in showing the practical utility of such algorithms.
description: 46 pages, 12 figures
On Einstein's opponents, and other crackpots
Creators: name: van Dongen, Jeroen
Publisher: name: arXiv
Year: 2011
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: Essay Review of "Einsteins Gegner. Die öffentliche Kontroverse um die Relativitätstheorie in den 1920er Jahren" by Milena Wazeck.
description: 6 pages
Anomalous depinning of magnetic domain walls within the ferromagnetic phase of the Weyl semimetal Co3Sn2S2
Creators: name: Shen, Zihao
name: Zhu, Xiangdong
name: Ullah, Rahim. R.
name: Klavins, Peter
name: Taufour, Valentin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report bulk magnetization measurements and spatially resolved measurements of magnetic domains in Co3Sn2S2 single crystals. The results indicate that a previously reported magnetic anomaly around 130 K is due to an anomalous domain wall depinning upon cooling. Our measurements also reveal a hysteresis between field-cooled-cooling (FCC) and field-cooled-warming (FCW) magnetization curves acquired under a constant magnetic field below 300 Oe. This observation rules out the possibility that the anomaly stems from a second-order phase transition. Our results further suggest that changes in the shape of hysteresis loops from 5 K to 170 K are caused by an unusual temperature-dependent domain nucleation field that changes sign around 130 K. The Kerr rotation images of the magnetic domains confirm that the domain walls depin between 120 K and 140 K.
description: 8 pages, 7 figures
VRCockpit: Mitigating Simulator Sickness in VR Games Using Multiple Egocentric 2D View Frames
Creators: name: Chen, Hao
name: Shi, Rongkai
name: Monteiro, Diego
name: Baghaei, Nilufar
name: Liang, Hai-Ning
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Virtual reality head-mounted displays (VR HMDs) have become a popular platform for gaming. However, simulator sickness (SS) is still an impediment to VR's wider adoption, particularly in gaming. It can induce strong discomfort and impair players' immersion, performance, and enjoyment. Researchers have explored techniques to mitigate SS. While these techniques have been shown to help lessen SS, they may not be applicable to games because they cannot be easily integrated into various types of games without impacting gameplay, immersion, and performance. In this research, we introduce a new SS mitigation technique, VRCockpit. VRCockpit is a visual technique that surrounds the player with four 2D views, one for each cardinal direction, that show 2D copies of the areas of the 3D environment around the player. To study its effectiveness, we conducted two different experiments, one with a car racing game, followed by a first-person shooter game. Our results show that VRCockpit has the potential to mitigate SS and still allows players to have the same level of immersion and gameplay performance.
description: 8 pages, 4 figures, 2 tables
An atmospheric radiation model for Cerro Paranal. I. The optical spectral range
Creators: name: Noll, S.
name: Kausch, W.
name: Barden, M.
name: Jones, A. M.
name: Szyszka, C.
name: Kimeswenger, S.
name: Vinther, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: The Earth's atmosphere affects ground-based astronomical observations. Scattering, absorption, and radiation processes deteriorate the signal-to-noise ratio of the data received. For scheduling astronomical observations it is, therefore, important to accurately estimate the wavelength-dependent effect of the Earth's atmosphere on the observed flux. In order to increase the accuracy of the exposure time calculator of the European Southern Observatory's (ESO) Very Large Telescope (VLT) at Cerro Paranal, an atmospheric model was developed as part of the Austrian ESO In-Kind contribution. It includes all relevant components, such as scattered moonlight, scattered starlight, zodiacal light, atmospheric thermal radiation and absorption, and non-thermal airglow emission. This paper focuses on atmospheric scattering processes that mostly affect the blue (< 0.55 mum) wavelength regime, and airglow emission lines and continuum that dominate the red (> 0.55 mum) wavelength regime. While the former is mainly investigated by means of radiative transfer models, the intensity and variability of the latter is studied with a sample of 1186 VLT FORS1 spectra. For a set of parameters such as the object altitude angle, Moon-object angular distance, ecliptic latitude, bimonthly period, and solar radio flux, our model predicts atmospheric radiation and transmission at a requested resolution. A comparison of our model with the FORS1 spectra and photometric data for the night-sky brightness from the literature, suggest a model accuracy of about 20%. This is a significant improvement with respect to existing predictive atmospheric models for astronomical exposure time calculators.
description: 23 pages, 21 figures, accepted for publication in A&A
Image-based extrapolation and GPU-accelerated quadrature methods for measuring global distortions in map projections
Creators: name: Yan, Jin
name: Gao, Jing
name: Xu, TianSheng
name: Li, Ni
name: Gong, Guanghong
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 401301
subject: Cartography and digital mapping
classificationCode: 490399
subject: Numerical and computational mathematics not elsewhere classified

description: This study proposes a modern GPU-accelerated quadrature method based on image encoding and extrapolation to calculate global distortions in map projections.Kavraisky VII (kav7) projection is an example for the demonstration of the proposed method. The output of the demonstration code is as below.> julia .\int_global_distort.jlkav724.510480 seconds (42.00 M allocations: 11.478 GiB, 7.65% gc time, 26.94% compilation time: 11% of which was recompilation)29.774297 seconds (341.28 k allocations: 16.410 MiB, 0.41% compilation time)1.342763 seconds (112.40 k allocations: 5.932 MiB, 2.27% compilation time)35.116941 seconds (1.21 M allocations: 61.382 MiB, 0.62% compilation time)4.157882 seconds (5.14 M allocations: 5.686 GiB, 10.34% gc time, 2.18% compilation time)34.142203 seconds (146 allocations: 8.672 KiB)3.145769 seconds (4.96 M allocations: 5.678 GiB, 3.83% gc time)global area distortion for kav7 is: 0.161454144814007global maximum angular distortion for kav7 is: 0.22713971425085883global distortion for kav7 is: 0.27867524229393636
Generalized Density Matrix Revisited: Microscopic Approach to Collective Dynamics in Soft Spherical Nuclei
Creators: name: Jia, L. Y.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The generalized density matrix (GDM) method is used to calculate microscopically the parameters of the collective Hamiltonian. Higher order anharmonicities are obtained consistently with the lowest order results, the mean field [Hartree-Fock-Bogoliubov (HFB) equation] and the harmonic potential [quasiparticle random phase approximation (QRPA)]. The method is applied to soft spherical nuclei, where the anharmonicities are essential for restoring the stability of the system, as the harmonic potential becomes small or negative. The approach is tested in three models of increasing complexity: the Lipkin model, model with factorizable forces, and the quadrupole plus pairing model.
description: submitted to Physical Review C on 08 May, 2011
A practical guide to verifiable, evidence-based conservation: overview
Creators: name: Funk, Stephan M
Publisher: name: Zenodo
Year: 2023
Subjects: conservation plan
conservation management
conservation standards
CMP
evidence-based conservation

description: This guide provides an overview of planning for verifiable, evidence-based conservation, focusing on achieving meaningful ecological and biodiversity outcomes. It emphasises a holistic Project Cycle that extends beyond immediate outputs, advocating for in-depth situational assessments, goal-oriented strategic planning, and the incorporation of continuous learning and knowledge sharing into conservation practices. Highlighting the necessity of comprehensive management and monitoring plans, the guide outlines how these plans should be tailored to the specific contexts of the conservation area. It underscores the importance of utilizing tools like the Conservation Measures Partnership´s (CMP) Conservation Standards and Miradi software to facilitate effective project management and data-driven decision-making. The guide encapsulates the importance of adaptability and rigorous evidence in informing conservation actions, ensuring long-term sustainability and success in conservation initiatives.
An exploration of students' personal constructs: implications for clinical teaching in psychiatric mental health nursing
Creators: name: Melrose, Sherri
Publisher: name: University of Calgary
Year: 1998
Subjects: subject: RC440 .M45 1998
subject: Additional Copy: 370 EDC 1998 MELR in the Duocette Education Library
subject: Psychiatric nursing.
subject: Psychiatric nursing--Education.
subject: Psychiatric nursing--Study and teaching.

description: Bibliography: p. 241-256