cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Evanescent Particles
Creators: name: Colosi, Daniele
name: Oeckl, Robert
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Massive Klein-Gordon theory is quantized on a timelike hyperplane in Minkowski space using the framework of general boundary quantum field theory. In contrast to previous work, not only the propagating sector of the phase space is quantized, but also the evanescent sector, with the correct physical vacuum. This yields for the first time a description of the quanta of the evanescent field alone. The key tool is the novel $α$-Kähler quantization prescription based on a $*$-twisted observable algebra. The spatial evolution of states between timelike hyperplanes is established and turns out to be non-unitary if different choices are made for the quantization ambiguity for initial and final hyperplane. Nevertheless, a consistent notion of transition probability is established also in the non-unitary case, thanks to the use of the positive formalism. Finally, it is shown how a conducting boundary condition on the timelike hyperplane gives rise to what we call the Casimir state. This is a pseudo-state which can be interpreted as an alternative vacuum and which gives rise to a sea of particle pairs even in this static case.
description: 20 pages, 2 figures; v2: minor corrections, references updated
An exotic shuffle relation of $ζ(\{2\}^m)$ and $ζ(\{3,1\}^n)$
Creators: name: Zhao, Jianqiang
Publisher: name: arXiv
Year: 2007
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11M06, 05A19, 68R05

description: In this short note we will provide a new and shorter proof of the following exotic shuffle relation of multiple zeta values: $$ζ(\{2\}^m \sha\{3,1\}^n)={2n+m\choose m} \frac{π^{4n+2m}}{(2n+1)\cdot (4n+2m+1)!}.$$ This was proved by Zagier when n=0, by Broadhurst when $m=0$, and by Borwein, Bradley, and Broadhurst when m=1. In general this was proved by Bowman and Bradley in \emph{The algebra and combinatorics of shuffles and multiple zeta values}, J. of Combinatorial Theory, Series A, Vol. \textbf{97} (1)(2002), 43--63. Our idea in the general case is to use the method of Borwein et al. to reduce the above general relation to some families of combinatorial identities which can be verified by WZ-method.
description: 5 pages
WFSBP guidelines on how to grade treatment evidence for clinical guideline development
Creators: name: Hasan, Alkomiet
name: Bandelow, Borwin
name: Yatham, Lakshmi N.
name: Berk, Michael
name: Falkai, Peter
name: Möller, Hans-Jürgen
name: Kasper, Siegfried
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Objective and methods: This paper reviews sources of data typically used in guideline development, available grading systems, their pros and cons, and the methods for evaluating risks of bias in publications, and proposes a revised method for grading evidence and recommendations for use in development of clinical treatment guidelines. Results: The new World Federation of Societies of Biological Psychiatry (WFSBP) grading system allows guideline developers to follow a multi-step approach of defining levels of evidence, applying criteria for grading (define the acceptability) and the grading of recommendations. Conclusions: Further, these updated WFSBP recommendations for rating evidence and treatment recommendations provide a grading system that takes into account potential biases in sources of evidence in arriving at final ratings that are likely more clinically meaningful and pragmatic and thus should be used for the development of future treatment guidelines.
$\mathsf{PFA}$ and $ω_1$-free compact spaces
Creators: name: Dow, Alan
name: Hart, Klaas Pieter
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Topology (math.GN)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 54D30 (Primary), 03E35, 03E50, 03E57, 54A20, 54A35, 54D20 (Secondary)

description: The Proper Forcing Axiom implies that compact Hausdorff spaces are either first-countable or contain a converging $ω_1$-sequence.
description: Version 2: various corrections and changes Version 3: some corrections/changes after referee's report; final version
Neue Akzente in der Ausbildung von Physiklehrkräften: Eine kurze Einführung in die Produktion ,stummer Videos‘
Creators: name: Schweinberger, Matthias
name: Girwidz, Raimund
Publisher: name: Lehrerbildung@LMU
Year: 2021

description: Das Projekt „Lehramtsspezifische Ergänzungen und Berufsfeldbezüge für die Grundvorlesung der Physik“ setzt sich zum Ziel, die Fähigkeiten angehender Physiklehrkräfte zur Präsentation von Demonstrationsexperimenten zu verbessern. Dazu wurde das Konzept der ‚stummen Videos‘ als innovative Trainingsmethode entwickelt und in der Ausbildung der Physiklehramtsstudierenden an der Ludwig-Maximilians-Universität erfolgreich im Rahmen der BMBF-geförderten „Qualitätsoffensive Lehrerbildung“ implementiert. Anhand ‚stummer Videos‘ erlernen die Studierenden den Aufbau, die Durchführung und die Präsentation von Demonstrationsexperimenten, wobei der Fokus auf die Lenkung der Aufmerksamkeit und die Aktivierung der Schüler:innen gelegt wird. In diesem Beitrag werden das Konzept der ‚stummen Videos‘, die Produktion der Videos mit einfachen Mitteln und kurze Anwendungsmöglichkeiten, die über die Lehrerbildung hinausgehen, vorgestellt.
description: Lehrerbildung@LMU, Bd. 1 Nr. 2 (2021): Lehrerbildung@LMU
Provisions of the Food Security Act of 1985
Creators: name: Glaser, Lewrene K.
name: Glaser, Lewrene K.
Publisher: name: Unknown
Year: 1986
Subjects: subject: Agricultural and Food Policy
subject: Program commodities
subject: loan levels
subject: target prices
subject: cropland reduction
subject: grain reserves
subject: conservation
subject: credit
subject: food aid
subject: agricultural trade
subject: food stamps
subject: agricultural research

description: The Food Security Act of 1985 (P.L. 99-198) establishes a comprehensive framework within which the Secretary of Agriculture will administer agriculture and food programs from 1986 through 1990. This report describes the act’s provisions for dairy, wool and mohair, wheat, feed grains, cotton, rice, peanuts, soybeans, and sugar (including income and price supports, disaster payments, and acreage reductions); other general commodity provisions; trade; conservation; research, extension, and teaching; food stamps; and marketings. These provisions are compared with earlier legislation.
Electron transport in an open mesoscopic metallic ring
Creators: name: Roy, Dibyendu
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study electron transport in a normal-metal ring modeled by the tight binding lattice Hamiltonian, coupled to two electron reservoirs. First, Buttiker's model of incorporating inelastic scattering, hence decoherence and dissipation, has been extended by connecting each site of the open ring to one-dimensional leads for uniform dephasing in the ring threaded by magnetic flux. We show with this extension conductance remains symmetric under flux reversal, and Aharonov-Bohm oscillations with changing magnetic flux reduce to zero as a function of the decoherence parameter, thus indicating dephasing in the ring. This extension enables us to find local chemical potential profiles of the ring sites with changing magnetic flux and the decoherence parameter analogously to the four probe measurement. The local electrochemical potential oscillates in the ring sites because of quantum-interference effects. It predicts that measured four-point resistance also fluctuates and even can be negative. Then we point out the role of the closed ring's electronic eigenstates in the persistent current around Fano antiresonances of an asymmetric open ring for both ideal leads and tunnel barriers. Determining the real eigenvalues of the non-Hermitian effective Hamiltonian of the ring, we show that there exist discrete bound states in the continuum of scattering states for the asymmetric ring even in the absence of magnetic flux. Our approach involves quantum Langevin equations and non-equilibrium Green's functions.
description: 19 pages, 6 figures
Gauge groups and bialgebroids
Creators: name: Han, Xiao
name: Landi, Giovanni
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Algebra (math.QA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We study the Ehresmann--Schauenburg bialgebroid of a noncommutative principal bundle as a quantization of the gauge groupoid of a classical principal bundle. We show that the gauge group of the noncommutative bundle is isomorphic to the group of bisections of the bialgebroid, and we give a crossed module structure for the bisections and the automorphisms of the bialgebroid. Examples illustrating these constructions include: Galois objects of Taft algebras, a monopole bundle over a quantum spheres and a not faithfully flat Hopf--Galois extension of commutative algebras. The latter two examples have in fact a structure of Hopf algebroid for a suitable invertible antipode.
description: 33 pages. Sect. 5.1 expanded. Few minor changes. arXiv admin note: substantial text overlap with arXiv:2002.06097
Additional file 1 of Establishment and characterization of 18 Sarcoma Cell Lines: Unraveling the Molecular Mechanisms of Doxorubicin Resistance in Sarcoma Cell Lines
Creators: name: Cho, Young-Eun
name: Kim, Soon-Chan
name: Kim, Ha Jeong
name: Han, Ilkyu
name: Ku, Ja-Lok
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Supplementary Material 1
Observing high redshift galaxy clusters through lensing of the Ostriker-Vishniac effect
Creators: name: Diego, J. M.
name: Herranz, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we study the possibility of detecting lensing signals in high-resolution and high-sensitivity CMB experiments. At scales below 1 arcmin, the CMB background is dominated by the Sunyaev-Zel'dovich effect in clusters and by Ostriker-Vishniac effect distortions elsewhere. Assuming the Sunyaev-Zel'dovich component in clusters can be removed, we focus on the Ostriker-Vishniac effect and study the possibility of its detection while paying special attention to contaminants, such as instrumental noise and point sources. After designing an optimal filter for this particular lensing signal we explore the signal-to-noise ratio for different scenarios varying the resolution of the experiment, its sensitivity, and the level of contamination due to point sources. Our results show that the next generation of experiments should be able to do new and exciting science through the lensing effect of the Ostriker-Vishniac background.
description: Submiteed to MNRAS
Stepwise Quenching of Exciton Fluorescence in Carbon Nanotubes by Single Molecule Reactions
Creators: name: Cognet, Laurent
name: Tsyboulski, Dmitri A.
name: Rocha, John-David R.
name: Doyle, Condell D.
name: Tour, James M.
name: Weisman, R. Bruce
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Single-molecule chemical reactions with individual single-walled carbon nanotubes were observed through near-infrared photoluminescence microscopy. The emission intensity within distinct submicrometer segments of single nanotubes changes in discrete steps after exposure to acid, base, or diazonium reactants. The steps are uncorrelated in space and time, and reflect the quenching of mobile excitons at localized sites of reversible or irreversible chemical attack. Analysis of step amplitudes reveals an exciton diffusional range of about 90 nanometers, independent of nanotube structure. Each exciton visits approximately 104 atomic sites during its lifetime, providing highly efficient sensing of local chemical and physical perturbations.
Direct CP violation in $\bar{B}^0 \to ρ^0(ω)ρ^0(ω) \to π^+π^-π^+π^-$
Creators: name: Guo, X. -H.
name: Zhang, Z. -H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the direct CP violation in $\bar{B}^0 \to ρ^0(ω)ρ^0(ω) \to π^+π^-π^+π^-$ (with unpolarized $ρ^0(ω)$) via the $ρ-ω$ mixing mechanism which causes a large strong phase difference and consequently a large CP violating asymmetry when the masses of the $π^+π^-$ pairs are in the vicinity of the $ω$ resonance. Since there are two $ρ(ω)$ mesons in the intermediate state $ρ-ω$ mixing contributes twice to the first order of isospin violation, leading to an even larger CP violating asymmetry (could be 30% -- 50% larger) than in the case where only one $ρ(ω)$ meson is involved. The CP violating asymmetry depends on the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements and the hadronic matrix elements. The factorization approach is applied in the calculation of the hadronic matrix elements with the nonfactorizable effects being included effectively in an effective parameter, $N_c$. We give the constraint on the range of $N_c$ from the latest experimental data for the branching ratios for $\bar{B}^0 \toρ^0ρ^0$ and $\bar{B}^0 \toρ^+ρ^-$. We find that the CP violating asymmetry could be very large (even more than 90% for some values of $N_c$). It is shown that the sensitivity of the CP violating asymmetry to $N_c$ is large compared with its smaller sensitivity to the CKM matrix elements. We also discuss the possibility to remove the mod $(π)$ ambiguity in the determination of the CP violating phase angle $α$ through the measurement of the CP violating asymmetry in the decay $\bar{B}^0\to ρ^0(ω)ρ^0(ω) \to π^+π^-π^+π^-$.
description: 26 pages,11figures
Hardy inequalities in normal form
Creators: name: Sinnamon, Gord
Publisher: name: arXiv
Year: 2021
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 26D15 (Primary) 47G10, 26D10 (Secondary)

description: A simple normal form for Hardy operators is introduced that unifies and simplifies the theory of weighted Hardy inequalities. A straightforward transition to normal form is given that applies to the various Hardy operators and their duals, whether defined on Lebesgue spaces of sequences, of functions on the half-line, or of functions on $\mathbb R^n$ or more general metric spaces. This is done by introducing an abstract formulation of Hardy operators, more general than any of these, and showing that the normal form transition applies to all operators formulated in this way. The transition to normal form is shown to preserve boundedness, compactness, and operator norm. To a large extent the transition can be carried out via well-behaved linear operators. Known results for boundedness and compactness of Hardy operators are given simple proofs and extended, via the transition, to this general setting. New estimates for the best constant in Hardy inequalities are established and a large class of Hardy inequalities is identified in which the best constants are is known precisely.
description: 35 pages, 0 figures
Cosmological Particle Creation in the Presence of Lorentz Violation
Creators: name: Khajeh, E.
name: Khosravi, N.
name: Salehi, H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In recent years, the effects of Lorentz symmetry breaking in cosmology has attracted considerable amount of attention. In cosmological context several topics can be affected by Lorentz violation,e.g., inflationary scenario, CMB, dark energy problem and barryogenesis. In this paper we consider the cosmological particle creation due to Lorentz violation (LV). We consider an exactly solvable model for finding the spectral properties of particle creation in an expanding space-time exhibiting Lorentz violation. In this model we calculate the spectrum and its variations with respect to the rate and the amount of space-time expansion.
description: 6 pages, 6 figures, To appear in Physics Letters B
Benchmarking projected Hartree-Fock as an approximation
Creators: name: Lauber, Stephanie M.
name: Frye, Hayden C.
name: Johnson, Calvin W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We benchmark angular-momentum projected{-after-variation} Hartree-Fock calculations as an approximation to full configuration-interaction results in a shell model basis. For such a simple approximation we find reasonably good agreement between excitation spectra, including for many odd-$A$ and odd-odd nuclides. We frequently find shape coexistence, in the form of multiple Hartree-Fock minima; {mixing in shape coexistence, the first step beyond single-reference projected Hartree-Fock}, demonstrably improves the spectrum in the $sd$- and $pf$-shells. The complex spectra of germanium isotopes present a challenge: for even $A$ the spectra are only moderately good and those of odd $A$ bear little resemblance to the configuration-interaction results. Despite this failure we are able to broadly reproduce the odd-even staggering of ground state binding energies, save for germanium isotopes with $N > 40$. To illustrate potential applications, we compute the spectrum of the recently measured dripline nuclide $^{40}$Mg. All in all, projected Hartree-Fock often provides a better description of low-lying nuclear spectra than one might expect. Key to this is the use of gradient descent and unrestricted shapes.
description: 21 pages, 11 figures, 2 tables
Transverse Polarization of Lambda and Lambda-bar Hyperons in Quasireal Photoproduction
Creators: name: The HERMES Collaboration
name: Airapetian, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The HERMES experiment has measured the transverse polarization of Lambda and Lambda-bar hyperons produced inclusively in quasireal photoproduction at a positron beam energy of 27.6 GeV. The transverse polarization of the Lambda hyperon is found to be positive while the observed Lambda-bar polarization is compatible with zero. The transverse polarization values averaged over the kinematic acceptance of HERMES are 0.078 +/- 0.006(stat) +/- 0.012(syst) and -0.025 +/- 0.015(stat) +/- 0.018(syst) for Lambda and Lambda-bar hyperons, respectively. The dependences of Lambda and Lambda-bar polarizations on the fraction $ζ$ of the beam's light-cone momentum carried by the hyperon and on the hyperon's transverse momentum $p_T$ were investigated. The measured Lambda polarization rises linearly with $p_T$ and exhibits a different behavior for low and high values of $ζ$, which approximately correspond to the backward and forward regions in the center-of-mass frame of the $γ^*N$ reaction.
Additional file 1 of In vitro drug testing using patient-derived ovarian cancer organoids
Creators: name: Chen, Lin-Yu
name: Chou, Yu-Ting
name: Liew, Phui-Ly
name: Chu, Ling-Hui
name: Wen, Kuo-Chang
name: Lin, Shiou-Fu
name: Weng, Yu-Chun
name: Wang, Hui-Chen
name: Su, Po-Hsuan
name: Lai, Hung-Cheng
Publisher: name: figshare
Year: 2024
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Cancer
subject: Hematology

description: Supplementary Material 1.
Decentralized sequential change detection using physical layer fusion
Creators: name: Zacharias, Leena
name: Sundaresan, Rajesh
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The problem of decentralized sequential detection with conditionally independent observations is studied. The sensors form a star topology with a central node called fusion center as the hub. The sensors make noisy observations of a parameter that changes from an initial state to a final state at a random time where the random change time has a geometric distribution. The sensors amplify and forward the observations over a wireless Gaussian multiple access channel and operate under either a power constraint or an energy constraint. The optimal transmission strategy at each stage is shown to be the one that maximizes a certain Ali-Silvey distance between the distributions for the hypotheses before and after the change. Simulations demonstrate that the proposed analog technique has lower detection delays when compared with existing schemes. Simulations further demonstrate that the energy-constrained formulation enables better use of the total available energy than the power-constrained formulation in the change detection problem.
description: 10 pages, two-column, 10 figures, revised based on feedback from reviewers, accepted for publication in IEEE Trans. on Wireless Communications
Farm Sector Financial Problems: Another Perspective
Creators: name: Economic Research Service
name: Economic Research Service
Publisher: name: Unknown
Year: 1986
Subjects: Agricultural Finance
Financial Economics

description: Excerpt from the report: Agriculture does not have an income problem today as much as it has a problem of absorbing large capital losses. The farm sector's problems center on capital losses and are particularly painful to those farmers whose investment debt is threatened by declining equity values, especially as farmland values decline. The farm crisis reflects the panic and pain associated with facing up to the reality of the loss, uncertainty about who will ultimately bear the loss, and lowered expectations about future market prospects. This report helps us understand the underlying nature of the problem and the essential difference between current income and longer term capital adjustments.
Polarization distortions of lensed gravitational waves
Creators: name: Dalang, Charles
name: Cusin, Giulia
name: Lagos, Macarena
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In general relativity (GR), gravitational waves (GWs) propagate the well-known plus and cross polarization modes which are the signature of a massless spin-2 field. However, diffraction of GWs caused by intervening objects along the line of sight can cause the apparent rise of additional polarizations due to GW-curvature interactions. In this paper, we continue the analysis by two of the authors of the present article, on lensing of gravitational waves beyond geometric optics. In particular, we calculate the lensing effect caused by a point-like lens, in the regime where its Schwarzschild radius $R_s$ is much smaller than the wavelength $λ$ of the signal, itself smaller than the impact parameter $b$. In this case, the curvature of spacetime induces distortions in the polarization of the wave such that effective scalar and vector polarizations may appear. We find that the amplitude of these apparent non-GR polarizations is suppressed by a factor $R_sλ/b^2$ with respect to the amplitude of the GR-like tensor modes. We estimate the probability to develop these extra polarization modes for a nearly monochromatic GW in the Pulsar Timing Arrays band traveling through a distribution of galaxies.
description: 18 pages, 5 figures, added Appendix C
A study of global monopole in Lyra geometry
Creators: name: Rahaman, F.
name: Mal, S.
name: Ghosh, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A class of exact static solution around a global monopole resulting from the breaking of a global S0(3) symmetry is obtained in the context of Lyra geometry. Our solution is shown to possess an interesting feature like wormholes space-time. It has been shown that the global monopole exerts no gravitational force on surrounding non-relativistic matter.
description: 6 pages, Published in Mod.Phys.Lett.A19:2785-2790,2004
BigDataGrapes D2.2 - Data Management Plan & Support Pack
Creators: name: Stoitsis, Giannis
Publisher: name: Zenodo
Year: 2020

description: This deliverable outlines the strategy for data management to be followed throughout the course of the project and presents the associated support pack including: (a) the data management guidelines and (b) a template that will be instantiated for all datasets that will be used and/or produced by the project pilots as part of the identified use cases and relevant scenarios. Based on the progress so far of “T2.1 Use Cases & Requirements”, three (3) use cases have been identified which were then further divided in different scenarios. The pilot that will be later defined will constitute instantiations of these use cases. For these use case and scenarios, all of the supporting datasets have already been described with the help of a data management plan template, which has been produced following the Guidelines on FAIR Data Management in Horizon 2020. These templates per different scenarios will be periodically updated to take account of additional decisions or best practices adopted during the project lifetime. Until the end of the project, they will include detailed individual Data Management Plans (DMPs) for the datasets (or groups of related datasets) that are used per use case. More specifically, these plans address a number of questions related to hosting the data (persistence), appropriately describing the data (data provenance, relevant audience for re-use, discoverability), access and sharing (rights, privacy, limitations) and information about the human and physical resources expected to carry out the plans.
Hodnotenie a viditeľnosť vedy (prednáška pre STU)
Creators: name: Stožická, Zuzna
name: Hudecová, Simona
Publisher: name: Zenodo
Year: 2022
Subjects: science evaulation
open science
DORA

description: Prezentácie z Metodológie vedeckej práce 2 pre prvý ročník PhD štúdia o hodnotení a viditeľnosti vedy.
Infinitely many 4d $\mathcal{N}=1$ SCFTs with $a = c$
Creators: name: Kang, Monica Jinwoo
name: Lawrie, Craig
name: Lee, Ki-Hong
name: Song, Jaewon
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2021
Subjects: dimension, 4
symmetry, flavor
multiplet, chiral
field theory, conformal
infrared
flow
central charge

description: We study a rich set of four-dimensional $\mathcal{N}=1$ superconformal field theories (SCFTs) with both central charges identical: $a = c$. We construct them via the diagonal $\mathcal{N}=1$ gauging of the flavor symmetry $G$ of a collection of $\mathcal{N}=2$ Argyres--Douglas theories of type $\mathcal{D}_p(G)$, with or without additional adjoint chiral multiplets. In this way, we construct infinitely-many theories that flow to interacting SCFTs with $a = c$ in the infrared. Finally, we briefly highlight the features of the SCFTs without $a = c$ that arise from generalizing this construction.
Numerical Simulations on Cepheus E
Creators: name: Rivera Ortiz, Pedro Ruben
name: Lefloch, Bertrand
name: Schutzer, André
name: Ceccarelli, Cecilia
Publisher: name: Zenodo
Year: 2021

description: With 2D/3D chemo-hydrodynamical (CHD) codes, such as WALKIMYA, we investigate the complex interaction of jets with the protostellar gas, modeling the physical and chemical properties of molecular gas tracers. We show a comparison between simulations and PdBI observations of the CO emission at arcsec scale which allows us to retrieve the history of the mass loss events that shape the CepE-mm system.
Theoretical insight on the electronic structure and photophysical properties of three blue cyclometalated Ir(III) complexes based on the benchmark complex FIrpic
Creators: name: Li, Jingmei
name: Gong, Ping
name: Han, Deming
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Marine Biology
subject: Cancer

description: The electronic and photophysical properties of three blue cyclometalated Ir(III) complexes have been investigated by using the density functional theory (DFT) and time dependent density functional theory (TDDFT) methods. Both HOMO and LUMO values of complexes 1, 2 and 3 are in the order of 1 > 2 > 3. The lowest-lying singlet absorption for 1, 2 and three attributed to the configurations of the highest occupied molecular orbital (HOMO) to the lowest unoccupied molecular orbital (LUMO) with the d(Ir)+π(A)→π*(A) [MLCT/ILCT] character. Complexes 1, 2 and three possess almost the same phosphorescence wavelength and transition characters.
Stronger arithmetic equivalence
Creators: name: Sutherland, Andrew V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 11R42 (Primary) 20C05, 20C20 (Secondary)

description: Motivated by a recent result of Prasad, we consider three stronger notions of arithmetic equivalence: local integral equivalence, integral equivalence, and solvable equivalence. In addition to having the same Dedekind zeta function (the usual notion of arithmetic equivalence), number fields that are equivalent in any of these stronger senses must have the same class number, and solvable equivalence forces an isomorphism of adele rings. Until recently the only nontrivial example of integral and solvable equivalence arose from a group-theoretic construction of Scott that was exploited by Prasad. Here we provide infinitely many distinct examples of solvable equivalence, including a family that contains Scott's construction as well as an explicit example of degree 96. We also construct examples that address questions of Scott, and of Guralnick and Weiss, and shed some light on a question of Prasad.
description: Published version; 23 pages
EDS analysis of unsupported IrO2 and Cyclic voltammetry of CoxSn1-xO2 from Mesoporous CoxSn(1–x)O2 as an efficient oxygen evolution catalyst support for SPE water electrolyzer
Creators: name: Chen, Gang
name: Li, Jiakun
name: Lv, Hong
name: Wang, Sen
name: Zuo, Jian
name: Zhu, Lihua
Publisher: name: The Royal Society
Year: 2019

description: SPE water electrolysis is a promising method of hydrogen production owing to its multiple strengths, including its high efficiency, high product purity and excellent adaptability. However, the overpotential of the oxygen evolution reaction process and consumption of Ir during charging in SPE water electrolysis will inevitably result in large energy loss and then high cost. Under these circumstances, herein, we propose a novel 40IrO2/CoxSn(1−x)O2 (x = 0.1, 0.2, 0.3) anode catalyst, where the CoxSn(1−x)O2 support is synthesized by a hydrothermal method and IrO2 is synthesized by a modified Adams fusion method. After modifying the component of CoxSn(1−x)O2, the 40IrO2/CoxSn(1−x)O2 exhibits an increased specific surface area, electrical conductivity and surface active sites. Moreover, a single cell is fabricated by Pt/C as cathode catalyst, 40IrO2/CoxSn(1−x)O2 as anode catalyst and Nafion 117 membrane as electrolyte. The 40IrO2/Co0.2Sn0.8O2 exhibits the lowest overpotential (1.748 V at 1000 mA cm−2), and only 0.18 mV h−1 of voltage increased for 100 h durability test at 1000 mA cm−2. Consequently, CoxSn(1−x)O2 is a promising anode electrocatalyst support for SPE water electrolyzer.
Opposite magnetic polarity of two photospheric lines in single spectrum of the quiet Sun
Creators: name: Rezaei, R.
name: Schlichenmaier, R.
name: Schmidt, W.
name: Steiner, O.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the structure of the photospheric magnetic field of the quiet Sun by investigating weak spectro-polarimetric signals. We took a sequence of Stokes spectra of the Fe I 630.15 nm and 630.25 nm lines in a region of quiet Sun near the disk center, using the POLIS spectro-polarimeter at the German VTT on Tenerife. The line cores of these two lines form at different heights in the atmosphere. The 3$σ$ noise level of the data is about 1.8 $\times 10^{-3} I_{c}$. We present co-temporal and co-spatial Stokes-$V$ profiles of the Fe I 630 nm line pair, where the two lines show opposite polarities in a single spectrum. We compute synthetic line profiles and reproduce these spectra with a two-component model atmosphere: a non-magnetic component and a magnetic component. The magnetic component consists of two magnetic layers with opposite polarity: the upper one moves upwards while the lower one moves downward. In-between, there is a region of enhanced temperature. The Stokes-$V$ line pair of opposite polarity in a single spectrum can be understood as a magnetic reconnection event in the solar photosphere. We demonstrate that such a scenario is realistic, but the solution may not be unique.
description: 4 pages, 5 figures, accepted in Astronomy & Astrophysics Letters
Uncertainty for Identifying Open-Set Errors in Visual Object Detection
Creators: name: Miller, Dimity
name: Sünderhauf, Niko
name: Milford, Michael
name: Dayoub, Feras
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Deployed into an open world, object detectors are prone to open-set errors, false positive detections of object classes not present in the training dataset. We propose GMM-Det, a real-time method for extracting epistemic uncertainty from object detectors to identify and reject open-set errors. GMM-Det trains the detector to produce a structured logit space that is modelled with class-specific Gaussian Mixture Models. At test time, open-set errors are identified by their low log-probability under all Gaussian Mixture Models. We test two common detector architectures, Faster R-CNN and RetinaNet, across three varied datasets spanning robotics and computer vision. Our results show that GMM-Det consistently outperforms existing uncertainty techniques for identifying and rejecting open-set detections, especially at the low-error-rate operating point required for safety-critical applications. GMM-Det maintains object detection performance, and introduces only minimal computational overhead. We also introduce a methodology for converting existing object detection datasets into specific open-set datasets to evaluate open-set performance in object detection.
Thermalization of a nonequilibrium electron-positron-photon plasma
Creators: name: Aksenov, A. G.
name: Ruffini, R.
name: Vereshchagin, G. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Starting from a nonequilibrium configuration we analyse the essential role of the direct and the inverse binary and triple interactions in reaching an asymptotic thermal equilibrium in a homogeneous isotropic electron-positron-photon plasma. We focus on energies in the range 0.1--10 MeV. We numerically integrate the integro-partial differential relativistic Boltzmann equation with the exact QED collisional integrals taking into account all binary and triple interactions in the plasma. We show that first, when detailed balance is reached for all binary interactions on a timescale $t_{k}\lesssim10^{-14}$sec, photons and electron-positron pairs establish kinetic equilibrium. Successively, when triple interactions fulfill the detailed balance on a timescale $t_{eq}\lesssim10^{-12}$sec, the plasma reaches thermal equilibrium. It is shown that neglecting the inverse triple interactions prevents reaching thermal equilibrium. Our results obtained in the theoretical physics domain also find application in astrophysics and cosmology.
description: 4 pages, 3 figures, Phys. Rev. Lett., to appear
Additional file 1 of Inflammatory proteins associated with Alzheimer’s disease reduced by a GLP1 receptor agonist: a post hoc analysis of the EXSCEL randomized placebo controlled trial
Creators: name: Koychev, Ivan
name: Reid, Graham
name: Nguyen, Maggie
name: Mentz, Robert J.
name: Joyce, Dan
name: Shah, Svati H.
name: Holman, Rury R.
Publisher: name: figshare
Year: 2024
Subjects: subject: Biochemistry
subject: Medicine
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences

description: Supplementary Table S1
ROLE OF PRINCIPALS IN SECONDARY SCHOOL ADMINISTRATION IN NSUKKA EDUCATION ZONE OF ENUGU STATE, NIGERIA
Creators: name: Ugwu,, Jude Okwudili
name: Tambe, Micheline Taku-mbi
Publisher: name: ZAP JOURNALS
Year: 2025
Subjects: Role, Principals, Secondary School, Administration, Nsukka Education Zone

description: This study investigated the role of Principals in Secondary School administration in Nsukka Education Zone of Enugu State, Nigeria. The objectives of the study were to: identify the various roles principals play in secondary schools’ administration, ascertain the ways principals establish discipline among students and staff and determine the ways principals enhance the performance of students and staff. The study adopted a descriptive survey research design and was carried out in Nsukka Education Zone. It made use of questionnaires as the instrument for data collection. Mean and standard deviation were used to analyse the research questions. The researcher discovered that the major findings are that principals’ roles include instructional supervision, planning, discipline enforcement, management of fa cilities and fund; that establishment of discipline involves rules/regulations, disciplinary committee, assignment of form teacher and appointment of students’ functionaries; that enhancement of performance calls for in-service training, carrying teachers along in decision making and positive rein enforcement. The researcher concluded that discipline begins with the principals if it is to be enforced to teachers and students through rules and regulations, setting up disciplinary committee and functionaries, and assigning form teachers. Hence the principal must be a role model. It was recommended among other things that All Nigeria Conference of Principals of Secondary Schools (ANCORPSS) should always organized training/workshop for principals and principals – to – be
Scanning magnetoresistance microscopy of atom chips
Creators: name: Volk, M.
name: Whitlock, S.
name: Hall, B. V.
name: Sidorov, A. I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Surface based geometries of microfabricated wires or patterned magnetic films can be used to magnetically trap and manipulate ultracold neutral atoms or Bose-Einstein condensates. We investigate the magnetic properties of such atom chips using a scanning magnetoresistive (MR) microscope with high spatial resolution and high field sensitivity. We show that MR sensors are ideally suited to observe small variations of the magnetic field caused by imperfections in the wires or magnetic materials which ultimately lead to fragmentation of ultracold atom clouds. Measurements are also provided for the magnetic field produced by a thin current-carrying wire with small geometric modulations along the edge. Comparisons of our measurements with a full numeric calculation of the current flow in the wire and the subsequent magnetic field show excellent agreement. Our results highlight the use of scanning MR microscopy as a convenient and powerful technique for precisely characterizing the magnetic fields produced near the surface of atom chips.
description: 6 pages, 6 figures
Theoretical insight on the electronic structure and photophysical properties of three blue cyclometalated Ir(III) complexes based on the benchmark complex FIrpic
Creators: name: Li, Jingmei
name: Gong, Ping
name: Han, Deming
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Marine Biology
subject: Cancer

description: The electronic and photophysical properties of three blue cyclometalated Ir(III) complexes have been investigated by using the density functional theory (DFT) and time dependent density functional theory (TDDFT) methods. Both HOMO and LUMO values of complexes 1, 2 and 3 are in the order of 1 > 2 > 3. The lowest-lying singlet absorption for 1, 2 and three attributed to the configurations of the highest occupied molecular orbital (HOMO) to the lowest unoccupied molecular orbital (LUMO) with the d(Ir)+π(A)→π*(A) [MLCT/ILCT] character. Complexes 1, 2 and three possess almost the same phosphorescence wavelength and transition characters.
Inverse scattering in multimode structures
Creators: name: Waagaard, Ole Henrik
name: Skaar, Johannes
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider the inverse scattering problem associated with any number of interacting modes in one-dimensional structures. The coupling between the modes is contradirectional in addition to codirectional, and may be distributed continuously or in discrete points. The local coupling as a function of position is obtained from reflection data using a layer-stripping type method, and the separate identification of the contradirectional and codirectional coupling is obtained using matrix factorization. Ambiguities are discussed in detail, and different {\it a priori} information that can resolve the ambiguities is suggested. The method is exemplified by applications to multimode optical waveguides with quasi-periodical perturbations.
description: To appear in SIAM Journal of Applied Mathematics
Searching for Surviving Companion in the Young SMC Supernova Remnant 1E 0102.2-7219
Creators: name: Li, Chuan-Jui
name: Seitenzahl, Ivo R.
name: Ishioka, Ryoko
name: Chu, You-Hua
name: Ruiter, Ashley J.
name: Vogt, Frédéric P. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: 1E 0102.2--7219 (hereafter E0102) is a young supernova remnant (SNR) in the Small Magellanic Cloud (SMC). It contains oxygen-rich SN ejecta, a possible neutron star (NS), and a small amount of fast-moving H-rich ejecta material. These properties are also seen in Cas A, it has thus been suggested that E0102 is also a Type IIb SNR, whose SN progenitor's hydrogen envelope was stripped off possibly via interactions with a companion star. To search for a surviving companion of E0102's SN progenitor, we have used archival Hubble Space Telescope (HST) continuum images to make photometric measurements of stars projected in the SNR to construct color-magnitude diagrams and compare the stars with those expected from surviving companions of Type IIb SNe. We have also used the Multi-Unit Spectroscopic Explorer observations taken with the Very Large Telescope to perform spectroscopic analyses of stars and search for peculiar radial velocities as diagnostics of surviving companions. We further use the HST and Gaia data to inspect proper motions of stars for complementary kinetic studies. No plausible companion candidates are found if the SN explosion site was near the NS, while the B3 V star 34a may be a plausible companion candidate if the SN explosion site is near the SN ejecta's expansion center. If the NS is real and associated with E0102, it needs a ~1000 km/s runaway velocity, which has been observed in other SNRs and can be acquired from an asymmetric SN explosion or a kick by the SN explosion of a massive companion.
description: 17 pages, 5 tables, 7 figures, accepted for publication in The Astrophysical Journal (ApJ)
Inverse Geometric Approach to the Simulation of the Circular Growth. The Case of Multicellular Tumor Spheroids
Creators: name: Brutovsky, Branislav
name: Horvath, Denis
name: Lisy, Vladimir
Publisher: name: arXiv
Year: 2007
Subjects: subject: Cell Behavior (q-bio.CB)
subject: FOS: Biological sciences

description: We demonstrate the power of the genetic algorithms to construct the cellular automata model simulating the growth of 2-dimensional close-to-circular clusters revealing the desired properties, such as the growth rate and, at the same time, the fractal behavior of their contours. The possible application of the approach in the field of tumor modeling is outlined.
Jet Riemann-Lagrange Geometry Applied to Evolution DEs Systems from Economy
Creators: name: Neagu, Mircea
Publisher: name: arXiv
Year: 2007
Subjects: subject: Differential Geometry (math.DG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 53C43; 53C07; 83C22

description: The aim of this paper is to construct a natural Riemann-Lagrange differential geometry on 1-jet spaces, in the sense of nonlinear connections, generalized Cartan connections, d-torsions, d-curvatures, jet electromagnetic fields and jet Yang-Mills energies, starting from some given non-linear evolution DEs systems modelling economic phenomena, like the Kaldor model of the bussines cycle or the Tobin-Benhabib-Miyao model regarding the role of money on economic growth.
description: 11 pages