cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quaternionic R transform and non-hermitian random matrices
Creators: name: Burda, Zdzislaw
name: Swiech, Artur
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Using the Cayley-Dickson construction we rephrase and review the non-hermitian diagrammatic formalism [R. A. Janik, M. A. Nowak, G. Papp and I. Zahed, Nucl.Phys. B $\textbf{501}$, 603 (1997)], that generalizes the free probability calculus to asymptotically large non-hermitian random matrices. The main object in this generalization is a quaternionic extension of the R transform which is a generating function for planar (non-crossing) cumulants. We demonstrate that the quaternionic R transform generates all connected averages of all distinct powers of $X$ and its hermitian conjugate $X^\dagger$: $\langle\langle \frac{1}{N} \mbox{Tr} X^{a} X^{\dagger b} X^c \ldots \rangle\rangle$ for $N\rightarrow \infty$. We show that the R transform for gaussian elliptic laws is given by a simple linear quaternionic map $\mathcal{R}(z+wj) = x + σ^2 \left(μe^{2iϕ} z + w j\right)$ where $(z,w)$ is the Cayley-Dickson pair of complex numbers forming a quaternion $q=(z,w)\equiv z+ wj$. This map has five real parameters $\Re e x$, $\Im m x$, $ϕ$, $σ$ and $μ$. We use the R transform to calculate the limiting eigenvalue densities of several products of gaussian random matrices.
description: 27 pages, 16 figures
Solving time dependent Fokker-Planck equations via temporal normalizing flow
Creators: name: Feng, Xiaodong
name: Zeng, Li
name: Zhou, Tao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this work, we propose an adaptive learning approach based on temporal normalizing flows for solving time-dependent Fokker-Planck (TFP) equations. It is well known that solutions of such equations are probability density functions, and thus our approach relies on modelling the target solutions with the temporal normalizing flows. The temporal normalizing flow is then trained based on the TFP loss function, without requiring any labeled data. Being a machine learning scheme, the proposed approach is mesh-free and can be easily applied to high dimensional problems. We present a variety of test problems to show the effectiveness of the learning approach.
description: 16pages
Spin-polarized neutron matter at different orders of chiral effective field theory
Creators: name: Sammarruca, F.
name: Machleidt, R.
name: Kaiser, N.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Spin-polarized neutron matter is studied using chiral two- and three-body forces. We focus, in particular, on predictions of the energy per particle in ferromagnetic neutron matter at different orders of chiral effective field theory and for different choices of the resolution scale. We discuss the convergence pattern of the predictions and their cutoff dependence. We explore to which extent fully polarized neutron matter behaves (nearly) like a free Fermi gas. We also consider the more general case of partial polarization in neutron matter as well as the presence of a small proton fraction. In other words, in our calculations, we vary both spin and isospin asymmetries. Confirming the findings of other microscopic calculations performed with different approaches, we report no evidence for a transition to a polarized phase of neutron matter5
description: 21 pages, 5 figures. arXiv admin note: text overlap with arXiv:1104.0437
Three new chromanes and one new flavone C-glycoside from Mallotus apelta
Creators: name: Anh, Nguyen Hoang
name: Yen, Duong Thi Hai
name: Nguyen The Cuong
name: Tai, Bui Huu
name: Yen, Pham Hai
name: Pham The Chinh
name: Van Cuong, Pham
name: Nam, Nguyen Hoai
name: Van Kiem, Phan
name: Cho, Su-Hyeon
name: Park, SeonJu
name: Nhiem, Nguyen Xuan
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer

description: Three new chromanes, malloapeltas J–L (1–3), and one new flavone C-glycoside, malloflavoside (4), together with four known compounds, apigenin 6-C-β-D-xylopyranosyl-8-C-α-L-arabinopyranoside (5), apigenin 6-C-β-D-glucopyranosyl-8-C-α-L-arabinopyranoside (6), apigenin 7-O-β-D-apiofuranosyl-(1→2)-β-D-glucopyranoside (7), and acantrifoside E (8) were isolated from the methanol extract of the leaves of Mallotus apelta. Their chemical structures were determined using spectroscopic methods, including 1D, 2D NMR, and HR-ESI-MS methods. All the isolated compounds were evaluated their cytotoxic activity against human prostate cancer (PC-3) and human breast cancer (MCF-7) cells, but none of them showed cytotoxicities on both human cancer cell lines.
A note on Penrose's Spin-Geometry Theorem and the geometry of `empirical quantum angles'
Creators: name: Szabados, László B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the traditional formalism of quantum mechanics, a simple direct proof of (a version of) the Spin Geometry Theorem of Penrose is given; and the structure of a model of the `space of the quantum directions', defined in terms of elementary $SU(2)$-invariant observables of the quantum mechanical systems, is sketched.
description: 10 pages; v2: a convention changed to be compatible with the standard one, the link in ref [5] is added, one reference is updated; v3: references added, typos corrected, discussion improved; v4: references updated and added, final version (Foundations of Physics)
On a stochastic gene expression with pre-mRNA, mRNA and protein contribution
Creators: name: Rudnicki, Ryszard
name: Tomski, Andrzej
Publisher: name: arXiv
Year: 2015
Subjects: subject: Probability (math.PR)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: In this paper we develop a model of stochastic gene expression, which is an extension of the model investigated in the paper [T. Lipniacki, P. Paszek, A. Marciniak-Czochra, A.R. Brasier, M. Kimmel, Transcriptional stochasticity in gene expression, J. Theor. Biol. 238 (2006) 348-367]. In our model, stochastic effects still originate from random uctuations in gene activity status, but we precede mRNA production by the formation of pre-mRNA, which enriches classical transcription phase. We obtain a stochastically regulated system of ordinary differential equations (ODEs) describing evolution of pre-mRNA, mRNA and protein levels. We perform mathematical analysis of a long-time behaviour of this stochastic process, identified as a piece-wise deterministic Markov process (PDMP). We check exact results using numerical simulations for the distributions of all three types of particles. Moreover, we investigate the deterministic (adiabatic) limit state of the process, when depending on parameters it can exhibit two specific types of behavior: bistability and the existence of the limit cycle. The latter one is not present when only two kinds of gene expression products are considered.
The Power of Locality: Primordial Non-Gaussianity at the Map Level
Creators: name: Baumann, Daniel
name: Green, Daniel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Primordial non-Gaussianity is a sensitive probe of the inflationary era, with a number of important theoretical targets living an order of magnitude beyond the reach of current CMB constraints. Maps of the large-scale structure of the universe, in principle, have the raw statistical power to reach these targets, but the complications of nonlinear evolution are thought to present serious, if not insurmountable, obstacles to reaching these goals. In this paper, we will argue that the challenge presented by nonlinear structure formation has been overstated. The information encoded in primordial non-Gaussianity resides in nonlocal correlations of the density field at three or more points separated by cosmological distances. In contrast, nonlinear evolution only alters the density field locally and cannot create or destroy these long-range correlations. This locality property of the late-time non-Gaussianity is obscured in Fourier space and in the standard bispectrum searches for primordial non-Gaussianity. We therefore propose to measure non-Gaussianity in the position space maps of the large-scale structure. As a proof of concept, we study the case of equilateral non-Gaussianity, for which the degeneracy with late-time nonlinearities is the most severe. We show that a map-level analysis is capable of breaking this degeneracy and thereby significantly improve the constraining power over previous estimates. Our findings suggest that "simulation-based inference" involving the forward modeling of large-scale structure maps has the potential to dramatically impact the search for primordial non-Gaussianity.
description: 44 pages, 8 figures
Scaling properties of a ferromagnetic thin film model at the depinning transition
Creators: name: Torres, Marcos F.
name: Buceta, Rubén C.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: In this paper, we perform a detailed study of the scaling properties of a ferromagnetic thin film model. Recently, interest has increased in the scaling properties of the magnetic domain wall (MDW) motion in disordered media when an external driving field is present. We consider a (1+1)-dimensional model, based on evolution rules, able to describe the MDW avalanches. The global interface width of this model shows Family-Vicsek scaling with roughness exponent $ζ\simeq 1.585$ and growth exponent $β\simeq 0.975$. In contrast, this model shows scaling anomalies in the interface local properties characteristic of other systems with depinning transition of the MDW, e.g. quenched Edwards-Wilkinson (QEW) equation and random-field Ising model (RFIM) with driving. We show that, at the depinning transition, the saturated average velocity $v_\mathrm{sat}\sim f^θ$ vanished very slowly (with $θ\simeq 0.037$) when the reduced force $f=p/p_\mathrm{c}-1\to 0^{+}$. The simulation results show that this model verifies all accepted scaling relations which relate the global exponents and the correlation length (or time) exponents, valid in systems with depinning transition. Using the interface tilting method, we show that the model, close to the depinning transition, exhibits a nonlinearity similar to the one included in the Kardar-Parisi-Zhang (KPZ) equation. The nonlinear coefficient $λ\sim f^{-ϕ}$ with $ϕ\simeq -1.118$, which implies that $λ\to 0$ as the depinning transition is approached, a similar qualitatively behaviour to the driven RFIM. We conclude this work by discussing the main features of the model and the prospects opened by it.
description: 10 pages, 5 figures, 1 table
(1026) Thomas Arthur Whatmoor
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
On the Approximate Weak Chebyshev Greedy Algorithm in Uniformly Smooth Banach Spaces
Creators: name: Dereventsov, A. V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We study greedy approximation in uniformly smooth Banach spaces. The Weak Chebyshev Greedy Algorithm (WCGA) is defined for any Banach space $X$ and a dictionary $\mathcal{D}$, and provides nonlinear $n$-term approximation with respect to $\mathcal{D}$. In this paper we study the Approximate Weak Chebyshev Greedy Algorithm (AWCGA) -- a modification of the WCGA that was introduces by V.N. Temlyakov. In the AWCGA we are allowed to calculate $n$-term approximation with a perturbation in computing the norming functional and a relative error in calculating the approximant. Such permission is natural for the numerical applications and simplifies realization of the algorithm. We obtain conditions that are necessary and sufficient for the convergence of the AWCGA for any element of $X$. In particular, we show that if perturbations and errors are from $\ell_1$ space then the conditions for the convergence of the AWCGA are the same as for the WCGA. For specifically chosen perturbations and errors we estimate the rate of convergence for any element $f$ from the closure of the convex hull of $\mathcal{D}$ and demonstrate that in special cases the AWCGA performs as well as the WCGA.
Ratcheting performance of maraging steel fabricated via laser powder bed fusion: experimental evaluation and numerical prediction
Creators: name: Halama, Radim
name: Kourousis, Kyriakos I.
Publisher: name: University of Limerick
Year: 2025
Subjects: classificationCode: 40
subject: Engineering

description: Purpose – This work intends to evaluate experimentally the ratcheting behaviour of AM MS300. Furthermore, cyclic plasticity modelling (modified Abdel-Karimand Ohnomodel)is examined as a means of predicting ratcheting. Design/methodology/approach – Uniaxial stress-controlled cyclic loading histories were utilised to evaluate ratcheting for Maraging Steel 300 (MS300) fabricated via laser powder bed fusion (LPBF) additive manufacturing (AM). Heat-treated and as-built AM and conventionally manufactured (CM) MS300 coupons were tested at room temperature, under constant and incrementally variable stress amplitude and mean stress. Two sets of AM test coupons were used, printed at horizontal and vertical built orientation. The AM material ratcheting was predicted via constitutive modelling and numerical simulation. The Abdel-Karim and Ohno cyclic plasticity model was modified by introducing a memory surface, to improve ratcheting prediction. Findings – The hysteresis stress–strain response and low cycle fatigue (LCF) life were obtained from the different loading histories. Both the AM and CM MS300 exhibited an accumulation of axial strain (ratcheting) for all tests, attributed to the application of non-zero mean stress. The AM MS300 has demonstrated a higher ratcheting accumulation rate than the CM material. The achieved agreement between the numerical results of the new model and the experimental data offers an indication on the suitability and the robustness of this model. Originality/value – The ratcheting behaviour of the AM MS300 material has been characterised for the first time in the published literature, for a variety of loading histories selected. A modified Abdel-Karim and Ohno plasticity model has been developed to account for the ratcheting performance of this material.
Gravity duals for defect quivers in the Veneziano limit
Creators: name: Jokela, Niko
name: Penín, José Manuel
name: Rigatos, Konstantinos Christos S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct gravity duals to supersymmetric gauge theories in the presence of unquenched flavor hypermultiplets in the fundamental representation of the gauge group living on the (1+1)-dimensional defect. This configuration is given by the intersection of two sets of D3-branes. Working in the Veneziano limit with large number of colors and flavors we are able to find a closed set of equations describing the dual geometry. We briefly discuss the corresponding solutions for massless flavors as well as in the small flavor limit of massive hypermultiplets. Interestingly, the 1/4-BPS supergravity solutions are generically only asymptotically anti de-Sitter, the dilaton does not vary with the holographic radial coordinate. This implies that the classical Type IIB supergravity solutions remain trustworthy descriptions for the gauge theories from the deep IR to the far UV.
description: 20 pages, plus appendices
(1028) Mich'l MacCarthy
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Supplementary tables from Type X strains of Toxoplasma gondii are virulent for southern sea otters (Enhydra lutris nereis) and present in felids from nearby watersheds.
Creators: name: Shapiro, Karen
name: VanWormer, Elizabeth
name: Packham, Andrea
name: Dodd, Erin
name: Conrad, Patricia A.
name: Miller, Melissa
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Ecology
subject: Health Care
subject: Diseases
subject: 111706 Epidemiology
subject: FOS: Health sciences

description: Table S1. Selected loci used for genotyping Toxoplasma gondii isolates obtained from brains of infected sea otters (n=135) in California between 1998-2015.; Table S2. Univariable analysis for risk factors associated with sea otter (n=116) deaths due to Toxoplasma gondii infection as a primary cause.; Table S3. Univariable analysis for risk factors associated with presence of Type X RFLP Toxoplasma gondii genotype in sea otters (n=135).
A definition of primary operators in $J\bar T$-deformed CFTs
Creators: name: Guica, Monica
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: $J\bar T$-deformed CFTs provide an interesting example of non-local, yet UV-complete two-dimensional QFTs that are entirely solvable. They have been recently shown to possess an infinite set of symmetries, which are a continuous deformation of the Virasoro-Kac-Moody symmetries of the seed CFT. In this article, we put forth a definition of primary operators in $J\bar T$-deformed CFTs on a cylinder, which are singled out by having CFT-like momentum-space commutation relations with the symmetry generators in the decompatification limit. We show -- based on results we first derive for the case of $J^1 \wedge J^2$-deformed CFTs -- that all correlation functions of such operators in the $J\bar T$-deformed CFT can be computed exactly in terms of the correlation functions of the undeformed CFT and are crossing symmetric in the plane limit. In particular, two and three-point functions are simply given by the corresponding momentum-space correlator in the undeformed CFT, with all dimensions replaced by particular momentum-dependent conformal dimensions. Interestingly, scattering amplitudes off the near-horizon of extremal black holes are known to take a strikingly similar form.
description: 30 pp
MERICS EU-China Opinion Pool: Recalibrating EU's China policy
Creators: name: Godement, François
name: Garcia-Herrero, Alicia
name: Jerdén, Björn
name: Bērziņa-Čerenkova, Una
name: Chimits, François
name: Ghiretti, Francesca
name: Stec, Grzegorz
Publisher: name: Zenodo
Year: 2023
Subjects: China policy
EU-China
De-risk

description: The European Council will discuss the approach to China at its 2-day summit on June 29/30. EU Commission President Ursula von der Leyen has put forward her agenda for de-risking relations with China, while Germany is finalizing its long-awaited China strategy. French President Emmanuel Macron visited Beijing, expressing interest in reopening relations after COVID, while several Central and Eastern European member states have been reassessing their stance on China in view of Beijing’s continued support for Moscow despite Russia’s invasion of Ukraine. In this round of MERICS’ EU-China opinion pool, MERICS Analyst Grzegorz Stec asked several experts: As the EU recalibrates its China policy, what needs to change?
Inhibition potential of silver-gold nanoparticles on mild steel in 3.5% NaCl solution
Creators: name: Ikubanni, Peter P.
name: Adekunle A. Adeleke
name: Jamiu K. Odusote
name: Tesleem B. Asafa
name: Sharafadeen K. Kolawole
name: Ogbesanya, Victor O.
name: Okolie, Jude A.
Publisher: name: Faculty of Engineering, Khon Kaen University
Year: 2023
Subjects: NaCl environment
Saline environment
Mild steel
Gravimetric
Tafel polarization
Surface morphology

description: Engineering and Applied Science Research, 50, 5, 413-419
Barjols, place de la Rouguière, un jeune homme regarde un éventaire de jouets
Creators: name: Musée National Des Arts Et Traditions Populaires (Paris)
name: Centre D'ethnologie Française
Publisher: name: École des Hautes Études en Sciences Sociales; Institut  interdisciplinaire d'anthropologie du contemporain (Paris); Laboratoire d'anthropologie et d'histoire de l'institution de la culture (Paris)
Year: 2024

Abstract
Highly efficient star formation in NGC 5253 possibly from stream-fed accretion
Creators: name: Turner, J. L.
name: Beck, S. C.
name: Benford, D. J.
name: Consiglio, S. M.
name: Ho, P. T. P.
name: Kovács, A.
name: Meier, D. S.
name: Zhao, J. -H.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A local dwarf galaxy, NGC 5253, has a young super star cluster that may provide an example of highly efficient star formation. Here we report the detection and imaging, with the Submillimeter Array, of the J= 3-2 rotational transition of CO at the location of the massive cluster associated with the supernebula. The gas cloud is hot, dense, quiescent, and extremely dusty. Its gas-to-dust ratio is lower than the Galactic value, which we attribute to dust enrichment by Wolf-Rayet stars within the embedded star cluster. Its star formation efficiency exceeds 50%, ten times higher than clouds in the Milky Way: this cloud is a factory of stars and soot. We suggest that high efficiency results from the force-feeding of star formation by a streamer of gas falling into the galaxy.
description: Accepted to Nature. 15 pages, 5 figures. Abstract modified from Nature summary paragraph
(1023) John Whatmoor
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Musical Textures of Migration: Music’s Role in the Syrian Refugee Experience in Germany
Creators: name: Ward, Cameron
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2021

description: This thesis centers around three in-depth interviews with Syrian refugees living in Germany. Based on these interviews, this thesis reveals insights about the Syrian refugee experience in Germany and the role music plays. This project aimed to answer the questions: What is the relationship between music and the Syrian refugee experience in Germany? Does music affect Syrian refugees' identities throughout their experience arriving and trying to make a home in Germany? In answering these questions, I extrapolated the connections between music and identity, music and language, and music and reenactment. I also analyze the nuanced tensions between integration, assimilation, and multiculturalism as methods of community building in Germany, and globally. Accordingly, I assert that music sharing between listeners can be used to create more equitable and empathic community building processes.
Supplementary tables from Type X strains of Toxoplasma gondii are virulent for southern sea otters (Enhydra lutris nereis) and present in felids from nearby watersheds
Creators: name: Shapiro, Karen
name: VanWormer, Elizabeth
name: Packham, Andrea
name: Dodd, Erin
name: Conrad, Patricia A.
name: Miller, Melissa
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Ecology
subject: Health Care
subject: Diseases
subject: 111706 Epidemiology
subject: FOS: Health sciences

description: Table S1. Selected loci used for genotyping Toxoplasma gondii isolates obtained from brains of infected sea otters (n=135) in California between 1998-2015.; Table S2. Univariable analysis for risk factors associated with sea otter (n=116) deaths due to Toxoplasma gondii infection as a primary cause.; Table S3. Univariable analysis for risk factors associated with presence of Type X RFLP Toxoplasma gondii genotype in sea otters (n=135).
Performance of VUV-sensitive MPPC for Liquid Argon Scintillation Light
Creators: name: Igarashi, T.
name: Naka, S.
name: Tanaka, M.
name: Washimi, T.
name: Yorita, K.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A new type of the Multi-Pixel Photon Counter (MPPC), sensitive to Vacuum Ultra-Violet (VUV) light (wavelength λ < 150 nm), is recently developed and produced by Hamamatsu Photonics K.K. The basic properties of the new MPPC are measured at cryogenic facility of Waseda university using liquid nitrogen. Temperature dependence of breakdown voltage, capacitance, and dark count rate of the MPPC are also evaluated. In addition, the absolute photon detection efficiency (PDE) for liquid argon (LAr) scintillation light (λ = 128 nm) is estimated to be about 7% with uncertainty of 2% by using 241 Am α-ray source. Based on these basic measurements a possible application of the new MPPC to LAr detector for dark matter search is discussed.
description: 8 pages, 6 figures
(1024) Elizabeth [Whatmoor]
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Frame invariance and scalability of neural operators for partial differential equations
Creators: name: Zafar, Muhammad I.
name: Han, Jiequn
name: Zhou, Xu-Hui
name: Xiao, Heng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Partial differential equations (PDEs) play a dominant role in the mathematical modeling of many complex dynamical processes. Solving these PDEs often requires prohibitively high computational costs, especially when multiple evaluations must be made for different parameters or conditions. After training, neural operators can provide PDEs solutions significantly faster than traditional PDE solvers. In this work, invariance properties and computational complexity of two neural operators are examined for transport PDE of a scalar quantity. Neural operator based on graph kernel network (GKN) operates on graph-structured data to incorporate nonlocal dependencies. Here we propose a modified formulation of GKN to achieve frame invariance. Vector cloud neural network (VCNN) is an alternate neural operator with embedded frame invariance which operates on point cloud data. GKN-based neural operator demonstrates slightly better predictive performance compared to VCNN. However, GKN requires an excessively high computational cost that increases quadratically with the increasing number of discretized objects as compared to a linear increase for VCNN.
Broad Iron Emission from Gravitationally Lensed Quasars Observed by Chandra
Creators: name: Walton, D. J.
name: Reynolds, M. T.
name: Miller, J. M.
name: Reis, R. C.
name: Stern, D.
name: Harrison, F. A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent work has demonstrated the potential of gravitationally lensed quasars to extend measurements of black hole spin out to high-redshift with the current generation of X-ray observatories. Here we present an analysis of a large sample of 27 lensed quasars in the redshift range 1.0
description: 5 pages, 2 figures, accepted for publication in ApJ
Holographic CFT Phase Transitions and Criticality for Charged AdS Black Holes
Creators: name: Cong, Wan
name: Kubiznak, David
name: Mann, Robert
name: Visser, Manus
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the hololgraphic dual of the extended thermodynamics of spherically symmetric, charged AdS black holes in the context of the AdS/CFT correspondence. The gravitational thermodynamics of AdS black holes can be extended by allowing for variations of the cosmological constant and Newton's constant. In the dual CFT this corresponds to including the central charge $C$ and its chemical potential $μ$ as a new pair of conjugate thermodynamic variables, in addition to the standard pairs: temperature vs. entropy $(T,S)$, electric potential vs. charge $(\tilde Φ, \tilde Q)$ and field theory pressure vs. volume $(p,{\cal V})$. For the (grand) canonical ensembles at fixed $(\tilde Q, {\cal V}, C), (\tilde Φ, {\cal V},C)$ and $(\tilde Q, {\cal V}, μ)$ we show the CFT description of charged AdS black holes contains either critical phenomena or interesting phase behaviour. In the fixed $(\tilde Q, \mathcal V, μ)$ we find a new zeroth-order phase transition between a high- and low-entropy phase at some $μ$-dependent temperature. Finally, we point out there is no critical behaviour in the fixed $p$ ensembles, i.e. there is no $p - \cal V$ criticality, and hence the CFT state dual to a classical charged black hole cannot be a Van der Waals fluid.
description: 34 pages, 9 figures, 1 table. Comments on new ensembles added
The Carceral Image in Contemporary Horror Cinema
Creators: name: Freydl, Kat
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2021

description: This thesis introduces, defines, and examines the presence of the carceral image in contemporary horror films, in order to demonstrate it as an invaluable tool for analyses that critique that which is symbolically monstrous. This approach emphasizes the carceral as a looming, palpable, cultural imaginary, at once bound by and encroaching beyond its temporal and cultural specificity— a monster unto itself, rendered that much more haunting in its familiarity.
Tuning the structural, electronic and magneto-transport properties of spin-orbit Mott insulator Sr2IrO4
Creators: name: Sharma, Priyamedha
name: Singh, Saurabh
name: Kuga, Kentaro
name: Takeuchi, Tsunehiro
name: Bindu, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the tunability of the structural, electronic and magneto transport properties of polycrystalline Sr2IrO4 sample. The extent of bifurcation of the magnetisation curves during the field cooled and zero field cooled cycles establishes that the magnetic anisotropy in the as-prepared sample is more as compared to the vacuum annealed one. Based on the behaviours of the structural parameters and the magnetic studies, our results show that the canted AFM structure is stabilised in a larger temperature range in the case of the annealed sample as compared to the as prepared one. At low temperatures, for both the samples, a phase, possibly of glassy nature competes with the canted AFM phase. The temperature extent to which both these phases co-exist for the as-prepared and the annealed one is around 115K an 70K, respectively. The transport studies reveal that for both the samples, in the high temperature region of study, the conduction mechanism is governed by the Arrhenius model. In the intermediate temperature range, variable range hopping(VRH) and Arrhenius models govern the transport in the as-prepared and the annealed one, respectively. At low temperatures, the conduction mechanism occurs through Efros-Shklovskii-VRH and VRH mechanisms for the as-prepared and the annealed samples, respectively. The magneto resistance measurements indicate higher negative magneto resistance in the annealed sample at all temperatures. The field dependence of magneto resistance at 10K suggests a co-existing glassy magnetic phase along with the canted antiferromagnetic structure in the as prepared sample and a suppression of this glassy magnetic phase in the annealed sample. The combined analyses of all the results highlight the role of disorder for the magnetic and trasnport properties of this compound.
Reading Between the Lines: Framing Sexual Assault in Young-Adult Novels
Creators: name: Brice, Molly
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2021

description: This honors thesis will first look to how media serve to educate adolescents on social issues, then it transitions to Young Adult Literature (YAL) as a source for learning about sexual assault and prevention. This study uses Entman’s (1993) model to analyze the framing of causes and consequences of, and remedies to, sexual assault in three Young Adult texts that deal with sexual violence.
Swap Test with Quantum-Dot Charge Qubits
Creators: name: Li, Y. -D.
name: Barraza, N.
name: Barrios, G. Alvarado
name: Solano, E.
name: Albarrán-Arriagada, F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose the implementation of the Swap Test using a charge qubit in a double quantum dot. The Swap Test is a fundamental quantum subroutine in quantum machine learning and other applications for estimating the fidelity of two unknown quantum states by measuring an auxiliary qubit. Our proposal uses a controlled three-qubit gate which is natural to quantum-dot charge qubits. It allows us to implement a Swap Test with a circuit depth of six layers, and an estimated gate time of less than 3 ns, that is below the coherence time of double quantum dots. This work paves the way for enhancing the toolbox of quantum machine learning developments in semiconductor qubits.
description: 6 Pages, 9 Figures
Scattering properties of PT-symmetric layered periodic structures
Creators: name: Shramkova, Oksana
name: Tsironis, Giorgios
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The optical properties of PT-symmetric periodic stack of the layers with balanced loss and gain are examined. We demonstrate that tunnelling phenomenon in periodic structures is connected with excitation of surface waves at the boundaries separating gain and loss regions within each unit cell and tunnelling conditions for periodic stack can be reduced to the conditions for one period. Alternatively, it is shown that coherent perfect absorber laser states are mediated by excitation of surface modes localised at all internal boundaries of the structure. The effects of the structure parameters and angle and direction of incidence on the resonant phenomena and spontaneous symmetry breaking transition are determined. It is shown that structure periodicity significantly increases the number of resonant phenomena, especially in stacks with high real and imaginary parts of dielectric permittivity of the layers. Gaussian beam dynamics in this type of structure is examined. The beam splitting in PT-symmetric periodic structure is observed.
description: 14 pages, 10 figures, journal paper. arXiv admin note: text overlap with arXiv:1505.02523
Higgs Properties and Supersymmetry: Constraints and Sensitivity from the LHC to an $e^+e^-$ Collider
Creators: name: Arbey, A.
name: Battaglia, M.
name: Djouadi, A.
name: Mahmoudi, F.
name: Muhlleitner, M.
name: Spira, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The study of the Higgs boson properties offers compelling perspectives for testing the effects of physics beyond the Standard Model and has deep implications for the LHC program and future colliders. Accurate determinations of the Higgs boson properties can provide us with a distinctively precise picture of the Higgs sector, set tight bounds, and predict ranges for the values of new physics model parameters. In this paper, we discuss the constraints on supersymmetry that can be derived by a determination of the Higgs boson mass and couplings. We quantify these constraints by using scans of the 19-parameter space of the so-called phenomenological minimal supersymmetric Standard Model. The fraction of scan points that can be excluded by the Higgs measurements is studied for the coupling measurement accuracies obtained in LHC Run 2 and expected for the HL-LHC program and $e^+e^-$ colliders and contrasted with those derived from missing transverse energy searches at the LHC and from dark matter experiments.
description: 27 pages, 14 figures
The Role of the French Maîtresse en titre: How Royal Mistresses Utilized Liminal Space to Gain Power and Access
Creators: name: Marine Elia
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2021

description: Using the liminal space of their métier, royal mistresses created opportunities for themselves using the limited spaces available to women in Ancien Régime France. In order to examine how royal mistresses in early modern France negotiated the politics and culture of courtly life, this paper addresses the liminal role mistresses occupied in conjunction with the work of de Certeau, the tactics used by mistresses that supported and legitimized their roles through appearances, and  how mistresses used the concept of celebrity to further their careers.
Supplementary Information from Early integration of pastoralism and millet cultivation in Bronze Age Eurasia.
Creators: name: Hermes, Taylor R.
name: Frachetti, Michael D.
name: Dupuy, Paula N. Doumani
name: Mar'yashev, Alexei
name: Nebel, Almut
name: Makarewicz, Cheryl A.
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Environmental Science
subject: Ecology

description: Text S1 and S2; Tables S1 - S4; Figures S1 - S7
Topologically protected charge transfer along the edge of a chiral $\textit{p}$-wave superconductor
Creators: name: Gnezdilov, N. V.
name: van Heck, B.
name: Diez, M.
name: Hutasoit, Jimmy A.
name: Beenakker, C. W. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The Majorana fermions propagating along the edge of a topological superconductor with $p_x+ip_y$ pairing deliver a shot noise power of $\frac{1}{2}\times e^2/h$ per eV of voltage bias. We calculate the full counting statistics of the transferred charge and find that it becomes trinomial in the low-temperature limit, distinct from the binomial statistics of charge-$e$ transfer in a single-mode nanowire or charge-$2e$ transfer through a normal-superconductor interface. All even-order correlators of current fluctuations have a universal quantized value, insensitive to disorder and decoherence. These electrical signatures are experimentally accessible, because they persist for temperatures and voltages large compared to the Thouless energy.
description: 5 pages, 4 figures. v3 [post-publication]: added an appendix on the effect of a tunnel barrier at the normal-superconductor contact
(1025) Wilford Blakeley
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Neutrino bound states and bound systems
Creators: name: Smirnov, Alexei Yu.
name: Xu, Xun-Jie
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Yukawa interactions of neutrinos with a new light scalar boson $ϕ$ can lead to formation of stable bound states and bound systems of many neutrinos ($ν$-clusters). For allowed values of the coupling $y$ and the scalar mass $m_ϕ$, the bound state of two neutrinos would have the size larger than $10^{12}$ cm. Bound states with sub-cm sizes are possible for keV scale sterile neutrinos with coupling $y > 10^{-4}$. For $ν$-clusters we study in detail the properties of final stable configurations. If there is an efficient cooling mechanism, these configurations are in the state of degenerate Fermi gas. We formulate and solve equations of the density distributions in $ν$-clusters. In the non-relativistic case, they are reduced to the Lane-Emden equation. We find that (i) stable configurations exist for any number of neutrinos, $N$; (ii) there is a maximal central density $\sim 10^9$ cm$^{-3}$ determined by the neutrino mass; (iii) for a given $m_ϕ$ there is a minimal value of $Ny^3$ for which stable configurations can be formed; (iv) for a given strength of interaction, $S_ϕ= (ym_ν/m_ϕ)^2$, the minimal radius of $ν$-clusters exists. We discuss the formation of $ν$-clusters from relic neutrino background in the process of expansion and cooling of the Universe. One possibility realized for $S_ϕ> 700$ is the development of instabilities in the $ν$-background at $T < m_ν$ which leads to its fragmentation. For allowed values of $y$, cooling of $ν$-clusters due to $ϕ$-bremsstrahlung and neutrino annihilation is negligible. The sizes of $ν$-clusters may range from $\sim$ km to $\sim 5$ Mpc. Formation of clusters affects perspectives of detection of relic neutrinos.
description: The part devoted to formation of clusters is further elaborated
title: Ανθεκτικότητα της εφοδιαστικής αλυσίδας νοσοκομείων σε περιόδους κρίσης
title: Resilence of healthcare supply chains in crisis periods
Creators: name: Βαμβουκα Μαριανθη
Publisher: name: Technical University of Crete
Year: 2023

description: Ως αποτέλεσμα της πανδημίας του COVID-19 και στην συνέχεια του πολέμου στην Ουκρανία που έφερε την ενεργειακή κρίση και την αύξηση του πληθωρισμού, οι εφοδιαστικές αλυσίδες εκτέθηκαν στην μεγαλύτερη διαταραχή που είχαν αντιμετωπίσει τις τελευταίες δεκαετίες. Η παρούσα διπλωματική εργασία θα διερευνήσει την εφοδιαστική αλυσίδα στο πλαίσιο των υπηρεσιών υγείας ( healthcare supply chain - HSC), η οποία είναι πολύπλοκη λόγω της μεγάλης ιδιαιτερότητας και ποικιλίας των παρεχόμενων προμηθειών, εξοπλισμού και υπηρεσιών. Επιπλέον, έχει μεγαλύτερο ρίσκο, καθώς η αξιοπιστία και η σταθερότητά της επηρεάζουν άμεσα τη δημόσια υγεία. Βασικός στόχος της εργασίας είναι η μελέτη του τρόπου λειτουργίας της εφοδιαστικής αλυσίδας στα Συστήματα Υγείας και ειδικότερα στο Πανεπιστημιακό Γενικό Νοσοκομείο Ηρακλείου. Επιμέρους στόχοι της μελέτης αποτελούν η διερεύνηση των επιπτώσεων κατά την διάρκεια των περιόδων κρίσης (οικονομική, πανδημίες, πόλεμος, ενεργειακή) στην εφοδιαστική αλυσίδα και στην παροχή υπηρεσιών καθώς και η εξέταση των νέων τεχνολογιών και εργαλείων (πχ. RFID , IoT) που μπορούν να χρησιμοποιήσουν οι εφοδιαστικές αλυσίδες των συστημάτων υγείας για την επιβίωση τους και την ενίσχυση της βιωσιμότητας και της ανθεκτικότητας τους.
description: As a result of the COVID-19 pandemic and the subsequent war in Ukraine that brought the energy crisis and rising inflation, supply chains were exposed to the biggest disruption they had faced in decades. This thesis will explore the supply chain in the context of health care services (healthcare supply chain - HSC), which is complex due to the great specificity and diversity of supplies, equipment and services provided. In addition, it is riskier, as its reliability and stability have a direct impact on public health. The main objective of this paper is to study the way the supply chain operates in Health Systems and in particular in the University General Hospital of Heraklion. Other objectives of the study are to
investigate the impact during periods of crisis (economic, pandemic, war, energy) on the supply chain and service delivery as well as to examine the new technologies and tools (e.g., RFID, IoT) that can be used by the supply chains of health systems for their survival and to enhance their sustainability and resilience.
Supplementary Information from Early integration of pastoralism and millet cultivation in Bronze Age Eurasia
Creators: name: Hermes, Taylor R.
name: Frachetti, Michael D.
name: Dupuy, Paula N. Doumani
name: Mar'yashev, Alexei
name: Nebel, Almut
name: Makarewicz, Cheryl A.
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Environmental Science
subject: Ecology

description: Text S1 and S2; Tables S1 - S4; Figures S1 - S7