cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Theory of magnetic switching of ferroelectricity in spiral magnets
Creators: name: Mochizuki, Masahito
name: Furukawa, Nobuo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We propose a microscopic theory for magnetic switching of electric polarization (P) in the spin-spiral multiferroics by taking TbMnO3 and DyMnO3 as examples. We reproduce their phase diagrams under a magnetic field H_ex by Monte-Carlo simulation of an accurate spin model and reveal that competition among the Dzyaloshinskii-Moriya interaction, spin anisotropy, and spin exchange is controlled by the applied H_ex, resulting in magnetic transitions accompanied by reorientation or vanishing of P. We also discuss the relevance of the proposed mechanisms to many other multiferroics such as LiCu2O2, MnWO4, and Ni3V2O4
description: 4+ pages, 4 figures
Entanglement properties of optical coherent states under amplitude damping
Creators: name: Wickert, Ricardo
name: Bernardes, Nadja Kolb
name: van Loock, Peter
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Through concurrence, we characterize the entanglement properties of optical coherent-state qubits subject to an amplitude damping channel. We investigate the distillation capabilities of known error correcting codes and obtain upper bounds on the entanglement depending on the non-orthogonality of the coherent states and the channel damping parameter. This work provides a first, full quantitative analysis of these photon-loss codes which are naturally reminiscent of the standard qubit codes against Pauli errors.
description: 7 pages, 6 figures. Revised version with small corrections; main results remain unaltered
Single Higgs Boson Production at Electron-Positron Colliders in Gauge-Higgs Unification
Creators: name: Funatsu, Shuichiro
name: Hatanaka, Hisaki
name: Orikasa, Yuta
name: Yamatsu, Naoki
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine contributions to single Higgs boson production processes via $Z'$ and $W'$ bosons in the $SU(3)_C\times SO(5)_W\times U(1)_X$ gauge-Higgs unification (GHU) model. In particular, we analyze the cross sections of three single Higgs boson production processes $e^-e^+\to Zh$, $e^-e^+\to ν\barνh$, and $e^-e^+\to e^-e^+h$ in the SM and the GHU model. For the Higgs strahlung process $e^-e^+\to Zh$, we show that for a parameter region satisfying the current experimental constraints, a maximum deviation from the SM is about up to 6% for the center-of-mass energy of the initial electron and positron $\sqrt{s}=250$ GeV and that from the SM is about up to 20% for $\sqrt{s}=500$ GeV, depending on the initial polarization of electron and positron. The deviation from the SM is monotonically increasing with respect to $\sqrt{s}$ for $\sqrt{s}\lesssim 1$ TeV. By using the Higgs strahlung process, it is possible to explore up to the region of tens of TeV in terms of the Kaluza-Klein (KK) mass. We also show that the sign of the bulk mass of a lepton multiplet in the GHU model can be determined by examining the deviation of the left-right symmetry of the $e^-e^+\to Zh$ process from the SM. The contributions to the cross sections of the $e^-e^+\to ν\barνh$ and $e^-e^+\to e^-e^+h$ processes via the $Z'$ and $W'$ bosons are relatively small compared to that for $e^-e^+\to Zh$ at least for $\sqrt{s}\leq 1$ TeV. As is the same as in the SM, the $e^-e^+\toν\barνh$ process gives a main contribution to the single Higgs boson production processes for $\sqrt{s}\gtrsim 500$ GeV, but large deviations from the SM are only observed on energy scales close to the masses of the first KK gauge bosons or higher.
description: 34 pages, 9 tables, 11 figures; some comments and references added; Sec. 3 moved to Appendix A; accepted for publication in Physical Review D
Cutting the traintracks: Cauchy, Schubert and Calabi-Yau
Creators: name: Cao, Qu
name: He, Song
name: Tang, Yichao
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this note we revisit the maximal-codimension residues, or leading singularities, of four-dimensional $L$-loop traintrack integrals with massive legs, both in Feynman parameter space and in momentum (twistor) space. We identify a class of "half traintracks" as the most general degenerations of traintracks with conventional (0-form) leading singularities, although the integrals themselves still have rigidity $\lfloor\frac{L-1}2\rfloor$ due to lower-loop "full traintrack'' subtopologies. As a warm-up exercise, we derive closed-form expressions for their leading singularities both via (Cauchy's) residues in Feynman parameters, and more geometrically using the so-called Schubert problems in momentum twistor space. For $L$-loop full traintracks, we compute their leading singularities as integrals of $(L{-}1)$-forms, which proves that the rigidity is $L{-}1$ as expected; the form is given by an inverse square root of an irreducible polynomial quartic with respect to each variable, which characterizes an $(L{-}1)$-dim Calabi-Yau manifold (elliptic curve, K3 surface, etc.) for any $L$. We also briefly comment on the implications for the "symbology" of these traintrack integrals.
description: refs updated; 36 pages, 12 figures
Значение службы управления персоналом в системе государственной службы Кыргызской Республики
Creators: name: Абдукаримова А. А.
name: Жалил Гульмира
Publisher: name: Московский экономический журнал
Year: 2019
Subjects: государственная служба
государственный орган
служба управления персоналом
штатная численность персонала в госорганах
кадровый потенциал.
public service
state agency
Human Resources Service
headcount of the state agencies
personnel potential.

description: В статье рассматриваются вопросы определения роли и места служб управления персоналом в государственном органе. Раскрыты проблемы совершенствования работы служб управления персоналом, а именно подбора персонала для работы в кадровых службах госорганов.
description: The article deals with the definition of the role and place of Human Resources Service in the state agency. The problems of HR service activity improving, exactly the selection of staff to work in the HR department of state bodies.
Perturbative quantum gravity with the Immirzi parameter
Creators: name: Benedetti, Dario
name: Speziale, Simone
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study perturbative quantum gravity in the first-order tetrad formalism. The lowest order action corresponds to Einstein-Cartan plus a parity-odd term, and is known in the literature as the Holst action. The coupling constant of the parity-odd term can be identified with the Immirzi parameter of loop quantum gravity. We compute the quantum effective action in the one-loop expansion. As in the metric second-order formulation, we find that in the case of pure gravity the theory is on-shell finite, and the running of Newton's constant and the Immirzi parameter is inessential. In the presence of fermions, the situation changes in two fundamental aspects. First, non-renormalizable logarithmic divergences appear, as usual. Second, the Immirzi parameter becomes a priori observable, and we find that it is renormalized by a four-fermion interaction generated by radiative corrections. We compute its beta function and discuss possible implications. The sign of the beta function depends on whether the Immirzi parameter is larger or smaller than one in absolute value, and the values plus or minus one are UV fixed-points (we work in Euclidean signature). Finally, we find that the Holst action is stable with respect to radiative corrections in the case of minimal coupling, up to higher order non-renormalizable interactions.
description: v2 minor amendments
Fatigue failure of amorphous alloys under cyclic shear deformation
Creators: name: Priezjev, Nikolai V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The accumulation of plastic deformation and flow localization in amorphous alloys under periodic shear are investigated using molecular dynamics simulations. We study a well-annealed binary mixture of one million atoms subjected to oscillatory shear deformation with strain amplitudes slightly above a critical value. We find that upon approaching a critical strain amplitude from above, the number of shear cycles until the yielding transition is well described by a power-law function. Remarkably, the potential energy at the end of each cycle as a function of the normalized number of cycles is nearly independent of the strain amplitude, which allows for estimation of the fatigue lifetime at a given strain amplitude. The analysis on nonaffine displacements of atoms elucidates the process of strain localization, including irreversible rearrangements of small clusters until the formation of a system-spanning shear band.
description: 20 pages, 8 figures
De Sitter ground state of scalar-tensor gravity and its primordial perturbation
Creators: name: Zhang, Hongsheng
name: Li, Xin-Zhou
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Scalar-tensor gravity is one of the most competitive gravity theory to Einstein's relativity. We reconstruct the exact de Sitter solution in scalar-tensor gravity, in which the non-minimal coupling scalar is rolling along the potential. This solution may have some relation to the early inflation and present acceleration of the universe. We investigated its primordial quantum perturbation around the adiabatic vacuum. We put forward for the first time that exact de Sitter generates non-exactly scale invariant perturbations. In the conformal coupling case, this model predicts that the tensor mode of the perturbation (gravity wave) is strongly depressed.
description: 9 pages
Redshift evolution of cosmic birefringence in CMB anisotropies
Creators: name: Galaverni, Matteo
name: Finelli, Fabio
name: Paoletti, Daniela
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the imprints of a cosmological redshift-dependent pseudoscalar field $ϕ$ on the rotation of cosmic microwave background (CMB) linear polarization generated by a coupling $ ϕF^{μν} \tilde F_{μν}$. We show how either phenomenological or theoretically motivated redshift dependence of the pseudoscalar field, such as those in models of Early Dark Energy, Quintessence or axion-like dark matter, lead to CMB polarization and temperature-polarization power spectra which exhibit a multipole dependence which goes beyond the widely adopted approximation in which the redshift dependence of the linear polarization angle is neglected. Because of this multipole dependence, the isotropic birefringence effect due to a general coupling $ϕF^{μν} \tilde F_{μν}$ is not degenerate with a systematic calibration angle uncertainty. By taking this multipole dependence into account, we calculate the parameters of these phenomenological and theoretical redshift dependence of the pseudoscalar field which can be detected by future CMB polarization experiments on the basis of a $χ^2$ analysis for a Wishart likelihood. As a final example of our approach, we compute by Markov Chain MonteCarlo (MCMC) the minimal coupling $g_ϕ$ in Early Dark Energy which could be detected by future experiments, with or without marginalizing on a systematic rotation angle uncertainty.
description: added references, published version
Dynamic networks of interactive learning and agricultural research for development—Three Critical Roles for Agricultural Advisory Services
Creators: name: Maatman, Arno
name: Wongtschowski, Mariana
name: Heemskerk, Willem
name: Sellamna, Nour
name: Davis, Kristin
name: Silim Nahdy
name: Washington Ochola
name: Kisauzi, Dan
Publisher: name: Gates Open Research
Year: 2019

description: Dynamic networks of interactive learning and agricultural research for development--three critical roles for agricultural advisory services
An XMM-Newton view of the Symbiotic Stars HM Sge, NQ Gem, and PU Vul
Creators: name: Toalá, J. A.
name: Botello, M. K.
name: Sabin, L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the analysis of archival XMM-Newton observations of the symbiotic stars HM Sge, NQ Gem, and PU Vul. The EPIC-pn spectra hint at the presence of emission lines, which are further confirmed in the 1st order RGS spectra of the three sources. Spectral modeling of the EPIC-pn data disclose unprecedented characteristics, for instance, the best fit to the EPIC-pn spectrum of the $β$-type symbiotic star PU Vul reveals the presence of two plasma components. We report the discovery of an extremely soft spectral component in the EPIC-pn spectrum of the $β$-type symbiotic star HM Sge which we suggest is produced by periodic mass ejections such as jets. Consequently, we suggest that a simple $β$-type classification no longer applies to HM Sge. Finally, the spectrum of the $β/δ$-type symbiotic star NQ Gem can not be fitted by a two-temperature plasma model as performed by previous authors. The model requires extra components to fit the 1.0-4.0 keV energy range. More sophisticated models to $β/δ$-type symbiotic stars are needed in order to peer into the accretion process from such systems.
description: 9 pages, 2 Tables, 3 Figures; Accepted to ApJ
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð½Ð°Ð±Ð¾ÑÐ° Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½ÑÑ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½ÑÐ¾Ð² Ð´Ð»Ñ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ Ð¼ÑÐ»ÑÑÐ¸ÑÐµÑÐ²Ð¸ÑÐ½Ð¾Ð³Ð¾ Android-Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Developing a set of pro-software components to create a multiservice Android application
Creators: name: Ð¡Ð²Ð¸ÑÐ¸Ð´Ð¾Ð², ÐÐ²Ð°Ð½
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: Ð¼Ð¾Ð±Ð¸Ð»ÑÐ½Ð¾Ðµ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ðµ
Android
Kotlin
Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½ÑÐµ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½ÑÑ
Jetpack Compose
MVVM
Retrofit
Room
mobile application
program components

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ Ð¿ÑÐ¾ÐµÐºÑÐ° Ð½Ð° ÑÐ·ÑÐºÐµ Kotlin, ÑÐ¾Ð´ÐµÑÐ¶Ð°ÑÐµÐ³Ð¾ Ð½Ð°Ð±Ð¾Ñ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½ÑÑ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ Ð´Ð»Ñ ÑÐ¾Ð·Ð´Ð°Ð½Ð¸Ñ Android-Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ. ÐÐ°Ð½Ð½ÑÐ¹ Ð¿ÑÐ¾ÐµÐºÑ Ð¿ÑÐ¸Ð·Ð²Ð°Ð½ Ð¾Ð±Ð»ÐµÐ³ÑÐ¸ÑÑ Ð¿ÑÐ¾ÑÐµÑÑ Ð¸Ð·ÑÑÐµÐ½Ð¸Ñ Ð¼Ð¾Ð±Ð¸Ð»ÑÐ½Ð¾Ð¹ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ¸ Ð¿Ð¾Ð´ ÐÐ¡ Android Ð´Ð»Ñ Ð½Ð°ÑÐ¸Ð½Ð°ÑÑÐ¸Ñ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÑÐ¸ÐºÐ¾Ð². Ð ÑÐ¾Ð´Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐµÑÐ°Ð»Ð¸ÑÑ ÑÐ»ÐµÐ´ÑÑÑÐ¸Ðµ Ð·Ð°Ð´Ð°ÑÐ¸: 1. ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¹ Ð¸ ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½ÑÑ Ð¿Ð¾Ð´ÑÐ¾Ð´Ð¾Ð² Ðº ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ Ð¼ÑÐ»ÑÑÐ¸ÑÐµÑÐ²Ð¸ÑÐ½ÑÑ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ð¹. 2. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼ÑÑ Ð±Ð°Ð·Ð¾Ð²ÑÑ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½ÑÐ¾Ð² Ð´Ð»Ñ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ. 3. Ð¡Ð¾Ð·Ð´Ð°Ð½Ð¸Ðµ Ð´ÐµÐ¼Ð¾Ð½ÑÑÑÐ°ÑÐ¸Ð¾Ð½Ð½ÑÑ Ð¿ÑÐ¸Ð»Ð¾Ð¶ÐµÐ½Ð¸Ð¹ Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½ÑÑ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½ÑÐ¾Ð². 4. ÐÐ¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ° ÑÐ¾Ð¿ÑÐ¾Ð²Ð¾Ð¶Ð´Ð°ÑÑÐµÐ¹ Ð´Ð¾ÐºÑÐ¼ÐµÐ½ÑÐ°ÑÐ¸Ð¸. Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð±ÑÐ» ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ Ð½Ð°Ð±Ð¾Ñ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½ÑÑ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½ÑÐ¾Ð², Ð° ÑÐ°ÐºÐ¶Ðµ Ð´ÐµÐ¼Ð¾Ð½ÑÑÑÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÑÐ½ÐºÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½Ð¾ÑÑÑ, Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÑÑÐ°Ñ Ð½ÐµÐºÐ¾ÑÐ¾ÑÑÐµ Ð¸Ð· Ð½Ð¸Ñ, ÐºÑÐ¾Ð¼Ðµ ÑÐ¾Ð³Ð¾, ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½ÑÐ¹ Ð¿ÑÐ¾ÐµÐºÑ Ð¿Ð¾ÐºÑÑÑ Ð´Ð¾ÐºÑÐ¼ÐµÐ½ÑÐ°ÑÐ¸ÐµÐ¹.
description: This work is about developing a project in Kotlin, which contains a set of software components to create a multiservice Android application. This project aims to facilitate the process of studying mobile development for the Android OS for novice developers. During the research the following tasks were solved: 1. Study of technologies and modern approaches to the development of multiservice applications. 2. Developing the necessary basic components for the application. 3. Creation of demonstration applications using the developed components. 4. Preparation of accompanying documentation. As a result, a set of software components was developed, as well as demonstration functionality using some of them, in addition, the developed project is covered by documentation.
A multimodal approach for placenta characterization : towards an objective and effective pregnancy screening system
Creators: name: Deeba, Farah
Publisher: name: University of British Columbia
Year: 2022

description: Recent developments in the understanding of the role of the placenta as the ‘master regulator’ of the intra-uterine environment underline the importance of placental evaluation in pregnancy screening. The placenta plays a major role in the pathogenesis of many pregnancy complications such as preeclampsia (PE) and intrauterine growth restriction (IUGR). These complications are leading causes of maternal and perinatal mortality and morbidity, affecting as many as 34% of all pregnancies. Antenatal monitoring of placentas using non-invasive, real time imaging techniques could potentially identify sensitive biomarkers of placental health and thereby offer opportunity for early intervention enabling improved perinatal outcomes. The overarching objective of this thesis is to develop an effective and objective pregnancy screening system. To attain this objective, the first part of the thesis focused on the theoretical development of several user- and system-independent Quantitative Ultrasound (QUS) algorithms. Different approaches were adopted for improved QUS estimation by addressing the fundamental precision-resolution trade-off and effect of tissue heterogeneity. Particularly, we proposed a prior-based regularization technique, the prior being derived from ultrasound physics, and a deep learning based approach, predictUS. In the second part of the thesis, a multimodal placental imaging study, including the ultrasound, MRI, and histopathology data from 47 placentas ex vivo, was designed and conducted in collaboration with a multi-disciplinary team. The dataset from this study was utilized for the validation of the proposed QUS algorithms. Specifically, we analyzed the efficacy of different QUS parameters, including attenuation coefficient, backscatter coefficient, scatterer diameter, elasticity, and viscosity, to detect placenta-mediated diseases and clinical outcomes.
Extraction of the frequency moments of spectral densities from imaginary-time correlation function data
Creators: name: Dornheim, Tobias
name: Wicaksono, Damar C.
name: Suarez-Cardona, Juan E.
name: Tolias, Panagiotis
name: Böhme, Maximilian
name: Moldabekov, Zhandos
name: Hecht, Michael
name: Vorberger, Jan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We introduce an exact framework to compute the positive frequency moments $M^{(α)}(\mathbf{q})=\braket{ω^α}$ of different dynamic properties from imaginary-time quantum Monte Carlo data. As a practical example, we obtain the first five moments of the dynamic structure factor $S(\mathbf{q},ω)$ of the uniform electron gas at the electronic Fermi temperature based on \emph{ab initio} path integral Monte Carlo simulations. We find excellent agreement with known sum rules for $α=1,3$, and, to our knowledge, present the first results for $α=2,4,5$. Our idea can be straightforwardly generalized to other dynamic properties such as the single-particle spectral function $A(\mathbf{q},ω)$, and will be useful for a number of applications, including the study of ultracold atoms, exotic warm dense matter, and condensed matter systems.
Quantum flavor oscillations extended to the Dirac theory
Creators: name: Bernardini, Alex E.
name: Guzzo, Marcelo M.
name: Nishi, Celso C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This report deals with the quantum theory of flavor oscillations in vacuum, extended to fermionic particles in the several subtle aspects of the first and second quantization theories. In this scenario, the use of the Dirac equation is required for a satisfactory evolution of fermionic mass-eigenstates since in the standard treatment of oscillations the mass-eigenstates are implicitly assumed to be scalars and, consequently, the spinorial form of neutrino wave functions is not included in the calculations. Within first quantized theories, besides flavor oscillations, chiral oscillations automatically appear when we set the dynamic equations for a fermionic Dirac-type particle. The left-handed chiral nature of created and detected neutrinos can be implemented in the first quantized Dirac theory in presence of mixing; the probability loss due to the changing of initially left-handed neutrinos to the undetected right-handed neutrinos can be obtained in analytic form. In the context of a causal relativistic theory of a free particle, one of the two effects should be present in flavor oscillations: (a) rapid oscillations or (b) initial flavor violation. Concerning second quantized approaches, a simple second quantized treatment exhibits a tiny but inevitable initial flavor violation without the possibility of rapid oscillations. Such effect is a consequence of an intrinsically indefinite but approximately well defined neutrino flavor. The violation effects are shown to be much larger than loop induced lepton flavor violation processes, already present in the standard model in the presence of massive neutrinos with mixing. The conclusions of this report lead to lessons concerning flavor mixing, chiral oscillations, interference between positive and negative frequency components of Dirac equation solutions, and the field formulation of quantum oscillations.
description: 116 pages, 10 figures (The abstract was suppressed due to online title limitations of the abstract field. See the manuscript for obtaining the complete abstract)
Ultrasonic study of the gelation of gelatin: phase diagram, hysteresis and kinetics
Creators: name: Parker, N. G.
name: Povey, M. J. W.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We map the ultrasonic (8 MHz) speed and attenuation of edible-grade gelatin in water, exploring the key dependencies on temperature, concentration and time. The ultrasonic signatures of the sol-gel transition, confirmed by rheological measurements, and incomplete gel formation at low concentrations, enable a phase diagram of the system to be constructed. Sensitivity is also demonstrated to the kinetics of gel formation and melting, and associated hysteresis effects upon cyclic temperature sweeps. Furthermore, simple acoustic models of the sol and gel state enable estimation of the speed of sound and compressibility of gelatin. Our results demonstrate the potential of ultrasonic measurements to characterise the structure and visco-elasticity of gelatin hydrogels.
description: 15 pages, 8 figures
Disorder Induced Nonlinear Mode Coupling and Symmetry Breaking in Amorphous Solids
Creators: name: Kumar, Avanish
name: Procaccia, Itamar
name: Singh, Murari
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Applying very small purely radial strains on amorphous solids in radial geometry one observes elastic responses that break the radial symmetry. Without any plasticity involved, the responses indicate nonlinear mode coupling contributions even for minute strains. We show that these symmetry-breaking responses are due to disorder, typical to amorphous configurations. The symmetry breaking responses are quantitatively explained using the classical Michell solutions which are excited by mode coupling.
Additional file 2 of Chromatin accessibility maps provide evidence of multilineage gene priming in hematopoietic stem cells
Creators: name: Martin, Eric W.
name: Krietsch, Jana
name: Reggiardo, Roman E.
name: Sousae, Rebekah
name: Kim, Daniel H.
name: Forsberg, E. Camilla
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Figure S2. Erythroid-selective accessibility of the β-globin cluster. ATAC-seq signal tracks of the six cell types in this study at the β-globin cluster (chr7: 103,792,027–103,879,340; mm10). The adult globin genes β-major (ßmaj) and β-minor (ßmin), as well as the hypersensitive sites (HS1-4,6) of the Locus Control Region (LCR) that regulates expression of the genes in this locus, displayed accessibility in EPs. HS2, but not the other HSs, and the β-major promoter were also accessible in HSCs, possibly indicating a “permissive” chromatin state. Accessibility of HS2 and HS4 in MkPs may relate to a closer relationship to HSCs and/or EPs (Fig. 1). As expected, no accessibility was observed at the fetal-specific epsilon Y globin (Ey), β-h1 (ßh1), β-h2 (ßh2) genes, or HS5. Likewise, GMs, B and T cells, that do not express β-globin genes, did not display accessibility of any of the regulatory elements in the locus.
Nanofluidics at the crossroads
Creators: name: Robin, Paul
name: Bocquet, Lydéric
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Nanofluidics, the field interested in flows at the smallest scales, has grown at a fast pace, reaching an ever finer control offluidic and ionic transport at the molecular level. Still, artificial pores are far from reaching the wealth of functionalities of biological channels that regulate sensory detection, biological transport and neurostransmission - all while operating at energies comparable to thermal noise. Here, we argue that artificial ionic machinescan be designed by harnessing the entire wealth of phenomena available at the nanoscales and exploiting techniques developped in various fields of physics. As they are generally based on solid-state nanopores, rather than soft membranes and proteins, they should in particular aim at taking advantage of their specific properties such as their electronic structure or their ability to interact with light. These observations call for the design of new ways of probing nanofluidic systems. Nanofluidics is now at the crossroads, there are new avenues to build complex ionic machines and this may allow to develop new functionalities inspired by Nature.
Efficacy and safety of submucosal tunneling endoscopic resection for upper gastrointestinal submucosal tumors with more than 1-year' follow-up: a systematic review and meta-analysis
Creators: name: Peng, Wei
name: Tan, Shali
name: Huang, Shu
name: Ren, Yutang
name: Li, Huan
name: Peng, Yan
name: Fu, Xiangsheng
name: Tang, Xiaowei
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy
subject: Computational Biology

description: Objectives: Submucosal tunneling endoscopic resection (STER) is a novel therapeutic approach for upper gastrointestinal submucosal tumors (SMTs) especially for tumors originating from the muscularis propria layer. Presently, several studies have reported the efficacy and safety of STER for SMTs. Therefore, we conducted this study to review the clinical outcomes of STER with more than 1-year’ follow-up duration. Materials and methods: Medline, Embase and Cochrane databases were searched on November 2018 to identify studies reporting STER for SMTs. Weighted pooled rates were calculated for en bloc resection, complete resection and adverse event (AE). Risk ratios (RR) were calculated and pooled to compare STER with thoracoscopic enucleation (TE). Results: A total of 701 patients with 728 lesions from 12 original studies were review. Pooled WPR for en bloc resection of STER was 86.3% (95% CI: 74.5–93.1%), (I2=82.5). Pooled WPR for complete resection of STER was 97.7% (95% CI: 92.8–99.3%), (I2=77.6). WPR for AE was 18.3% (95% CI: 9.7–31.6%), (I2=90.6%). Two studies with 292 patients compared the performance of STER with TE. Pooled RR for en bloc resection was 1.02 (95% CI: 0.95–1.09). Pooled RR for complete resection was 1.0 (95% CI: 0.98–1.03). Pooled RR for AE was 0.82 (95% CI: 0.33–2.05). Conclusions: Our study showed that STER has relatively long-term efficacy for treating upper gastrointestinal SMTs, and the incidence of AE was not low for STER, but all of them can be managed conservatively.
On the anomalous superfluid hydrodynamics
Creators: name: Lin, Shu
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: It has been shown by Son and Surówka that the presence of anomaly in hydrodynamics with global U(1) symmetry can induce vortical and magnetic currents. The induced current is uniquely determined by anomaly from the existence of an entropy current with non-negative divergence. In this work, we extended the analysis to hydrodynamics with U(1) symmetry spontaneously broken, i.e. U(1) superfluid hydrodynamics. We found that all possible first order gradient corrections are determined up to five arbitrary functions, with the entropy current containing one arbitrary function. Furthermore, the stress tensor does not receive correction from terms proportional to the magnetic field.
description: 22 pages, missing terms included, with qualitative change of the results
Supplementary Methods
Creators: name: Fischhoff, Ilya
name: Castellanos, Adrian
name: Rodrigues, Joao
name: Varsani, Arvind
name: Han, Barbara
Publisher: name: Cary Institute
Year: 2021
Subjects: subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Document describing supplementary methods adding more detail to those described in the main text. Included are descriptions of gathering trait variables, model parameterization, model evaluation, and information about models run that are not mentioned in the main text. Supplementary Tables 1-3 mentioned in this document can be found in the Supplementary Tables and Figures document.
Dressed bound states at chiral exceptional points
Creators: name: Lu, Yuwei
name: Tan, Haishu
name: Liao, Zeyang
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Atom-photon dressed states are a basic concept of quantum optics. Here, we demonstrate that the non-Hermiticity of open cavity can be harnessed to form the dressed bound states (DBS) and identify two types of DBS, the vacancy-like DBS and Friedrich-Wintgen DBS, in a microring resonator operating at a chiral exceptional point. With the analytical DBS conditions, we show that the vacancy-like DBS occurs when an atom couples to the standing wave mode that is a node of photonic wave function, and thus is immune to the cavity dissipation and characterized by the null spectral density at cavity resonance. While the Friedrich-Wintgen DBS can be accessed by continuously tuning the system parameters, such as the atom-photon detuning, and evidenced by a vanishing Rabi peak in emission spectrum, an unusual feature in the strong-coupling anticrossing. We also demonstrate the quantum-optics applications of the proposed DBS. Our work exhibits the quantum states control through non-Hermiticity of open quantum system and presents a clear physical picture on DBS at chiral exceptional points, which holds great potential in building high-performance quantum devices for sensing, photon storage, and nonclassical light generation.
description: 13 pages, 5 figures
Additional file 1 of Noninvasive prenatal testing for assessing foetal sex chromosome aneuploidy: a retrospective study of 45,773 cases
Creators: name: Xinran Lu
name: Chaohong Wang
name: Yuxiu Sun
name: Junxiang Tang
name: Keting Tong
name: Jiansheng Zhu
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1: Supplementary materials
Wasserstein distance as a new tool for discriminating cosmologies through the topology of large scale structure
Creators: name: Tsizh, Maksym
name: Tymchyshyn, Vitalii
name: Vazza, Franco
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this work we test Wasserstein distance in conjunction with persistent homology, as a tool for discriminating large scale structures of simulated universes with different values of $σ_8$ cosmological parameter (present root-mean-square matter fluctuation averaged over a sphere of radius 8 Mpc comoving). The Wasserstein distance (a.k.a. the pair-matching distance) was proposed to measure the difference between two networks in terms of persistent homology. The advantage of this approach consists in its non-parametric way of probing the topology of the Cosmic web, in contrast to graph-theoretical approach depending on linking length. By treating the halos of the Cosmic Web as points in a point cloud we calculate persistent homologies, build persistence (birth-death) diagrams and evaluate Wasserstein distance between them. The latter showed itself as a convenient tool to compare simulated Cosmic webs. We show that one can discern two Cosmic webs (simulated or real) with different $σ_8$ parameter. It turns out that Wasserstein distance's discrimination ability depends on redshift $z$, as well as on the dimensionality of considered homology features. We find that the highest discriminating power this tool obtains at $z=2$ snapshots, among the considered $z=2$, $1$, and $0.1$ ones.
description: 12 pages, 11 figures
The impact of EU border externalisation on freedom of movement within West Africa
Creators: name: May, Lisa Akinyi
Publisher: name: University of British Columbia
Year: 2022

description: Since the so-called “European migrant crisis” of 2015, the European Union (EU) has stepped up its attempts to curb irregular migration by enlisting third countries; a practice known as “border externalisation.” This thesis investigates how the EU’s border externalisation policies impact on freedom of movement within West Africa, a region with high internal migratory movements, due in part to the free movement protocol of the Economic Community of West African States (ECOWAS), which 15 nations have signed. I argue that EU externalisation policies have inadvertently led to limits on movement within West Africa. Furthermore, by applying Fanon’s postcolonial theory, I also argue that these policies are a continuation of colonialist practices. This thesis adopts a qualitative approach by examining important migration agreements between the EU and African nations since 2000, presenting an illustrative case study, and using interviews with policymakers and migration experts. I find that the EU uses several coercive measures over West African countries to prioritise EU migration concerns, including financial incentives, aid conditionalities and threats of withholding development aid, which emphasise containment and securitisation over free mobility. In so doing, these policies are undemocratic and undermine ECOWAS’s regional sovereignty and self-determination which in turn hinders West Africa’s regional integration. However, the interviews challenged the dominant narrative of African countries as passive victims of EU policies by highlighting how African governments use the threat of migration to extract support for domestic policy priorities and development aid.
Generalized virial theorem for contact Hamiltonian systems
Creators: name: Ghosh, Aritra
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mathematical Physics (math-ph)
subject: Symplectic Geometry (math.SG)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We formulate and study a generalized virial theorem for contact Hamiltonian systems. Such systems describe mechanical systems in the presence of simple dissipative forces such as Rayleigh friction, or the vertical motion of a particle falling through a fluid (quadratic drag) under the action of constant gravity. We find a generalized virial theorem for contact Hamiltonian systems which is distinct from that obtained earlier for the symplectic case. The `contact' generalized virial theorem is shown to reduce to the earlier result on symplectic manifolds as a special case. Various examples of dissipative mechanical systems are discussed. We also formulate a generalized virial theorem in the contact Lagrangian framework.
description: v1: Preliminary version; v2: Revised version, references added; v3: Minor changes
Характеристика системы управления рисками в нефтегазодобывающей лизинговой организации
Creators: name: Головнина Л. А.
name: Антонова К. С
name: Головнина Е. В.
name: Головнин В. Н.
name: Седлак М.
Publisher: name: Московский экономический журнал
Year: 2019
Subjects: оценка риска
методы
риск-менеджмент
классификация рисков
финансовые риски.
risk assessment
methods
risk-management
risk classification
financial risks.

description: Статья посвящена вопросам системы управления рисками в нефтегазодобывающей лизинговой организации. Даётся характеристика качественной и количественной оценке риска. А также даны характеристики следующих методов оценки риска статистические методы (метод оценки вероятности исполнения, дерево решений, имитационное моделирование), аналитические методы: анализ чувствительности, метод корректировки нормы дисконта с учётом риска, метод сценариев), метод экспертных оценок (комплекс логических и математико – статистических методов и процедур, метод аналогов). Рассмотрены понятия риск -менеджмента. В заключении представлена схема классификации финансовых рисков.
description: The article is devoted to the issues of the risk management system in the oil and gas producing leasing organization. Characteristics of qualitative and quantitative risk assessment are given. The characteristics of the following risk assessment methods are also given: statistical methods (method for estimating the likelihood of execution, decision tree, simulation modeling), analytical methods: sensitivity analysis, discount rate adjustment method taking into account risk, scenario method), expert evaluation method (logical and mathematical complex -statistical methods and procedures, the method of analogs). The concepts of risk management are considered. In the conclusion the scheme of classification of financial risks is presented.
Additional file 1 of Chromatin accessibility maps provide evidence of multilineage gene priming in hematopoietic stem cells
Creators: name: Martin, Eric W.
name: Krietsch, Jana
name: Reggiardo, Roman E.
name: Sousae, Rebekah
name: Kim, Daniel H.
name: Forsberg, E. Camilla
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Figure S1. Library fragment distributions for ATAC-seq samples. The library size distribution after deep-sequencing, mapping, and filtering to unique reads is shown of both replicates for A) HSCs B) EPs C) MkPs D) GMs E) B cells, and F) T cells.
Network topology of interlocked chiral particles
Creators: name: Monderkamp, Paul A.
name: Windisch, Rika S.
name: Wittmann, René
name: Löwen, Hartmut
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Self-assembly of chiral particles with an L-shape is explored by Monte-Carlo computer simulations in two spatial dimensions. For sufficiently high packing densities in confinement, a carpet-like texture emerges due to the interlocking of L-shaped particles, resembling a distorted smectic liquid crystalline layer pattern. From the positions of either of the two axes of the particles, two different types of layers can be extracted, which form distinct but complementary entangled networks. These coarse-grained network structures are then analyzed from a topological point of view. We propose a global charge conservation law by using an analogy to uniaxial smectics and show that the individual network topology can be steered by both confinement and particle geometry. Our topological analysis provides a general classification framework for applications to other intertwined dual networks.
description: 11 pages, 11 figures
Polyominoes and Polyiamonds as Fundamental Domains of Isohedral Tilings with Rotational Symmetry
Creators: name: Fukuda, Hiroshi
name: Kanomata, Chiaki
name: Mutoh, Nobuaki
name: Nakamura, Gisaku
name: Schattschneider, Doris
Publisher: name: arXiv
Year: 2010
Subjects: subject: Computational Geometry (cs.CG)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences

description: We describe computer algorithms that produce the complete set of isohedral tilings by n-omino or n-iamond tiles in which the tiles are fundamental domains and the tilings have 3-, 4-, or 6-fold rotational symmetry. The symmetry groups of such tilings are of types p3, p31m, p4, p4g, and p6. There are no isohedral tilings with symmetry groups p3m1, p4m, or p6m that have polyominoes or polyiamonds as fundamental domains. We display the algorithms' output and give enumeration tables for small values of n. This expands on our earlier works (Fukuda et al 2006, 2008).
Additional file 3 of Time-varying discrimination accuracy of longitudinal biomarkers for the prediction of mortality compared to assessment at fixed time point in severe burns patients
Creators: name: Jaechul Yoon
name: Kym, Dohern
name: Hur, Jun
name: Won, Jae Hee
name: Haejun Yim
name: Cho, Yong Suk
name: Chun, Wook
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Additional file 3: Supplementary Table 3. Time varying Performance of baseline biomarkers using CD approach (AUC with 95% CI).
A Terminal Velocity on the Landscape: Particle Production near Extra Species Loci in Higher Dimensions
Creators: name: Battefeld, Diana
name: Battefeld, Thorsten
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate particle production near extra species loci (ESL) in a higher dimensional field space and derive a speed limit in moduli space at weak coupling. This terminal velocity is set by the characteristic ESL-separation and the coupling of the extra degrees of freedom to the moduli, but it is independent of the moduli's potential if the dimensionality of the field space is considerably larger than the dimensionality of the loci, D >> d. Once the terminal velocity is approached, particles are produced at a plethora of nearby ESLs, preventing a further increase in speed via their backreaction. It is possible to drive inflation at the terminal velocity, providing a generalization of trapped inflation with attractive features: we find that more than sixty e-folds of inflation for sub-Planckian excursions in field space are possible if ESLs are ubiquitous, without fine tuning of initial conditions and less tuned potentials. We construct a simple, observationally viable model with a slightly red scalar power-spectrum and suppressed gravitational waves; we comment on the presence of additional observational signatures originating from IR-cascading and individual massive particles. We also show that moduli-trapping at an ESL is suppressed for D >> d, hindering dynamical selection of high-symmetry vacua on the landscape based on this mechanism.
description: 46 pages, 6 figures. V3: typos corrected compared to JHEP version, conclusions unchanged
Ghosts of Critical Gravity
Creators: name: Porrati, Massimo
name: Roberts, Matthew M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recently proposed "critical" higher-derivative gravities in $AdS_D$ $D>3$ are expected to carry logarithmic representation of the Anti de Sitter isometry group. In this note, we quantize linear fluctuations of these critical gravities, which are known to be either identical with linear fluctuations of Einstein's gravity or else satisfy logarithmic boundary conditions at spacial infinity. We identify the scalar product uniquely defined by the symplectic structure implied by the classical action, and show that it does not posses null vectors. Instead, we show that the scalar product between any two Einstein modes vanishes, while the scalar product of an Einstein mode with a logarithmic mode is generically nonzero. This is the basic property of logarithmic representation that makes them neither unitary nor unitarizable.
description: v2: typos corrected and slight clarifications. 11 pages