cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A New Yield Simulator for Transiting Planets and False Positives: Application to the Next Generation Transit Survey
Creators: name: Günther, Maximilian N.
name: Queloz, Didier
name: Demory, Brice-Olivier
name: Bouchy, Francois
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present a yield simulator to predict the number and characteristics of planets, false positives and false alarms in transit surveys. The simulator is based on a galactic model and the planet occurrence rates measured by the Kepler mission. It takes into account the observation window function and measured noise levels of the investigated survey. Additionally, it includes vetting criteria to identify false positives. We apply this simulator to the Next Generation Transit Survey (NGTS), a wide-field survey designed to detect transiting Neptune-sized exoplanets. We find that red noise is the main limitation of NGTS up to 14th magnitude, and that its obtained level determines the expected yield. Assuming a red noise level of 1 mmag, the simulation predicts the following for a four-year survey: 4+-3 Super-Earths, 19+-5 Small Neptunes, 16+-4 Large Neptunes, 55+-8 Saturn-sized planets and 150+-10 Jupiter-sized planets, along with 4688+-45 eclipsing binaries and 843+-75 background eclipsing binaries. We characterize the properties of these objects to enhance the early identification of false positives and discuss follow-up strategies for transiting candidates.
description: Accepted for publication in MNRAS 07 Nov 2016. 12 pages, 10 figures, 3 tables. This is the authors' version of the manuscript
Dipoena longiducta Zhang & Zhang 2011
Creators: name: Gao, Cai-Xia
name: Li, Shu-Qiang
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Theridiidae
Dipoena
Dipoena longiducta

description: Dipoena longiducta Zhang & Zhang, 2011 Dipoena longiducta Zhang & Zhang, 2011: 95, figs 6–10. Material examined. China, Yunnan, 12♂, 7♀, Xishuangbanna, Menglun Nature Reserve, secondary tropical seasonal moist forest (21º54.718'N, 101º16.940'E), 27 July 2007, Guo Zheng leg. Distribution. China (Hainan, Yunnan).
description: Published as part of Gao, Cai-Xia & Li, Shu-Qiang, 2014, Comb-footed spiders (Araneae: Theridiidae) in the tropical rainforest of Xishuangbanna, Southwest China, pp. 1-135 in Zoological Systematics 39 (1) on page 44, DOI: 10.11865/zs20140101, http://zenodo.org/record/7475365
Mixed-order phase transition in a two-step contagion model with single infectious seed
Creators: name: Choi, Wonjun
name: Lee, Deokjae
name: Kahng, B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A hybrid phase transition (HPT) that exhibits properties of continuous and discontinuous phase transitions at the same transition point has been observed in diverse complex systems. Previous studies of the HPTs on complex networks mainly focused on whether the order parameter is continuous or discontinuous. However, more careful and fundamental questions on the critical behaviors of the HPT such as how the divergences of the susceptibility and of the correlation size are affected by the discontinuity of the order parameter have been addressed. Here, we consider a generalized epidemic model that is known to exhibit a discontinuous transition as a spinodal transition. Performing extensive numerical simulations and using finite-size scaling analysis, we examine diverging behaviors of the susceptibility and the correlation size. We find that when there is one infectious node and under a certain condition, the order parameter can exhibit a discontinuous jump but does not exhibit any critical behavior before or after the jump. This feature differs from what we observed in HPTs in the percolation pruning process. However, critical behavior appears in the form of a power-law behavior of the outbreak size distribution. The mean outbreak size, corresponding to the susceptibility, diverge following the conventional percolation behavior. Thus a mixed-order transition occurs. The hyperscaling relation does not hold.
description: 11 pages, 20 figures
SYK Model with global symmetries in the double scaling limit
Creators: name: Narayan, Prithvi
name: S, Swathi T
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We discuss the double scaling limit of the SYK model with global symmetries. We develop the chord diagram techniques to compute the moments of the Hamiltonian and the two point function in the presence of arbitrary chemical potential. We also derive a transfer matrix acting on an auxiliary Hilbert space which can capture the chord diagram contributions. We present explicit results for the case of classical group symmetries namely orthogonal, unitary and symplectic groups. We also find the partition functions at fixed charges.
description: 39 pages and appendices
ICTY wartime sexual violence jurisprudence and the surrounding debate: a critical feminist analysis
Creators: name: Nadj, Daniela
Publisher: name: University of Westminster
Year: 2011

description: The thesis is a critical feminist analysis of ICTY wartime sexual violence jurisprudence, as it is currently constructed in feminist legal scholarship and the surrounding debate. Violence against women, in particular sexual violence has been a greatly topical issue within recent years in both scholarship and the popular imagination. There have been important legal developments within international law, which have provoked much academic, and in particular, legal commentary. On one level, the thesis contributes to this commentary. At the same time, it aims to contribute to a broader feminist theory, which engages with questions of human rights, identity, gender, armed conflict, culture and violence. It therefore explores how female identity, bodily injury, ethnic identity and culture have become intertwined in the debate surrounding wartime sexual violence. Specifically, it analyses the legal modalities through which wartime sexual violence has been inscribed into ICTY judgements and it asks whether these have further entrenched strongly essentialised portrayals of women in international law as victims, mothers or wives in times of armed conflict. Moreover, it asks what the visibility of wartime sexual violence and gender-based violence, more broadly, signifies for women in the current political and legal moment.1 The research question of this project is therefore threefold: How do wartime identities currently materialise in sexual violence jurisprudence? What does the increasing juridicalisation of wartime sexual violence represent for women in the contemporary political and legal moment? Are current feminist investments with the law the way forward in advancing the twin normative aims of gender justice and equality?
A Magnetic Ribbon Model for Star-Forming Filaments
Creators: name: Auddy, Sayantan
name: Basu, Shantanu
name: Kudoh, Takahiro
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We develop a magnetic ribbon model for molecular cloud filaments. These result from turbulent compression in a molecular cloud in which the background magnetic field sets a preferred direction. We argue that this is a natural model for filaments and is based on the interplay between turbulence, strong magnetic fields, and gravitationally-driven ambipolar diffusion, rather than pure gravity and thermal pressure. An analytic model for the formation of magnetic ribbons that is based on numerical simulations is used to derive a lateral width of a magnetic ribbon. This differs from the thickness along the magnetic field direction, which is essentially the Jeans scale. We use our model to calculate a synthetic observed relation between apparent width in projection versus observed column density. The relationship is relatively flat, similar to observations, and unlike the simple expectation based on a Jeans length argument.
description: 6 pages, 3 figures, to appear in ApJ
Dipoena nipponica Yoshida 2002
Creators: name: Gao, Cai-Xia
name: Li, Shu-Qiang
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Theridiidae
Dipoena
Dipoena nipponica

description: Dipoena nipponica Yoshida, 2002 Dipoena nipponica Yoshida, 2002: 9, figs 7–13. Material examined. China, Yunnan, 1♂, 2♀, Xishuangbanna, Menglun Nature Reserve, primary tropical seasonal rainforest (21º57.669'N, 101º11.893'E), 7 August 2007, Guo Zheng leg.; 1♂, 1♀, Menglun, Paramichelia baillonii plantation (about 20 years) (21º53.823'N, 101º17.072'E), 1–17 February 2007, Guo Zheng leg. Distribution. China (Yunnan); Japan.
description: Published as part of Gao, Cai-Xia & Li, Shu-Qiang, 2014, Comb-footed spiders (Araneae: Theridiidae) in the tropical rainforest of Xishuangbanna, Southwest China, pp. 1-135 in Zoological Systematics 39 (1) on page 44, DOI: 10.11865/zs20140101, http://zenodo.org/record/7475365
MuPix7 - A fast monolithic HV-CMOS pixel chip for Mu3e
Creators: name: Augustin, H.
name: Berger, N.
name: Dittmeier, S.
name: Hammerich, J.
name: Hartenstein, U.
name: Huang, Q.
name: Huth, L.
name: Immig, D.
name: Kozlinskiy, A.
name: Aeschbacher, F. Meier
name: Perić, I.
name: Perrevoort, A. -K.
name: Schöning, A.
name: Shrestha, S.
name: Sorokin, I.
name: Tyukin, A.
name: Bruch, D. vom
name: Wauters, F.
name: Wiedner, D.
name: Zimmermann, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The MuPix7 chip is a monolithic HV-CMOS pixel chip, thinned down to 50 μm. It provides continuous self-triggered, non-shuttered readout at rates up to 30 Mhits/chip of 3x3 mm^2 active area and a pixel size of 103x80 μm^2. The hit efficiency depends on the chosen working point. Settings with a power consumption of 300 mW/cm^2 allow for a hit efficiency >99.5%. A time resolution of 14.2 ns (Gaussian sigma) is achieved. Latest results from 2016 test beam campaigns are shown.
description: Proceedingsfor the PIXEL2016 conference, submitted to JINST A dangling reference has been removed from this version, no other changes
Developing a culture of nursing research through clinical-academic partnership
Creators: name: W. McConkey, Robert
name: Kelly, Therese
name: Dalton, Rachael
name: Rooney, Geraldine
name: Healy, Michelle
name: Murphy, Louise
name: Dowling, Maura
Publisher: name: University of Limerick
Year: 2023
Subjects: subject: Health sciences
subject: FOS: Health sciences

description: Evidence based practice is essential to advanced practice nursing, enabling the delivery of quality care and improved patient outcomes. As the name suggests, it requires healthcare decisions to be based on the best available and current evidence. Advanced practice nurses need astute critical analysis skills to appraise the evolving literature, and require research skills to lead on scientific inquiry and develop the profession. Yet, advanced practice nurses may not recognize themselves as research leaders. Participation in a journal club can promote evidence-based practice, improve clinician's critical thinking skills, and expose members to different research methodologies, however, nurses continue to face barriers to participation in these clubs. Establishing a clinical-academic partnership appears to be both mutually beneficial for clinicians and academics and is a significant enabler in the sustainability and functioning of the club through sharing expertise and experience. A supportive workplace culture is favourable to research utilization and knowledge translation. This paper outlines the role, practicalities, challenges, and benefits of setting up a hybrid urology journal and research club for advanced practice nurses in a clinical-academic partnership.
Creation and evolution of particle numberasymmetry in an expanding universe
Creators: name: Morozumi, Takuya
name: Nagao, Keiko I.
name: Adam, Apriadi Salim
name: Takata, Hiroyuki
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We introduce a model which may generate particle number asymmetry in an expanding Universe. The model includes CP violating and particle number violating interactions. The model consists of a real scalar field and a complex scalar field. Starting with an initial condition specified by a density matrix, we show how the asymmetry is created through the interaction and how it evolves at later time. We compute the asymmetry using non-equilibrium quantum field theory and as a first test of the model, we study how the asymmetry evolves in the flat limit.
description: 5 pages 1 figure , Submitted to the proceedings of the conference International workshop for "Strong Field Problems in Quantum Theory" (June 6-11, Tomsk Russia 2016.)
Frailty, Cognitive Impairment, and Chronic Limb-Threatening Ischaemia
Creators: name: Houghton, John S.M.
Publisher: name: University of Leicester
Year: 2022
Subjects: Uncategorized

description: Chronic limb-threatening ischaemia (CLTI) is the end-stage of peripheral artery disease and is characterised by lower limb rest pain, ulceration, or gangrene. Frailty is increasingly recognised as an important factor in health outcomes in older adults, and is frequently associated with cognitive impairment. Those with CLTI are likely to have high rates of both frailty and cognitive impairment due to their age, multi-morbidity and functional performance status. This thesis aimed to investigate the prevalence of frailty and cognitive impairment among individuals with CLTI, their associations with outcomes, and trajectories following intervention. Two systematic reviews, a retrospective cohort study, and a prospective cohort study were undertaken to answer several key research questions. Results from this thesis demonstrate that both frailty and cognitive impairment are highly prevalent among patients with CLTI. Both are strongly associated with each other, and frailty has a complex interrelationship with CLTI. Frailty is related to severity of limb threat, and those with frailty have a greater degree of impaired lower limb function. Frailty is strongly associated with increased perioperative morbidity and mortality, and both frailty and cognitive impairment are likely to have an impact on shared decision making. Successful revascularisation may improve frailty status in a small subset of individuals with CLTI and frailty, although a greater proportion of non-frail patients will transition to frailty at 3 months. Those with frailty may also have a more limited improvement in quality of life following intervention for CLTI. This thesis provides a comprehensive investigation of frailty and cognitive impairment in the context of CLTI, and its results have implications for both clinical practice and future research. Screening for frailty and cognitive impairment are likely to be beneficial for patients, supporting shared decision making and the identification of those most likely to benefit from specialist geriatrician input in the perioperative period.
Accounting for Differential Rotation in Calculations of the Sun's Angular Momentum-loss Rate
Creators: name: Finley, Adam J.
name: Brun, Allan Sacha
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Sun-like stars shed angular momentum due to the presence of magnetised stellar winds. Magnetohydrodynamic models have been successful in exploring the dependence of this "wind-braking torque" on various stellar properties, however the influence of surface differential rotation is largely unexplored. As the wind-braking torque depends on the rotation rate of the escaping wind, the inclusion of differential rotation should effectively modulate the angular momentum-loss rate based on the latitudinal variation of wind source regions. In order to quantify the influence of surface differential rotation on the angular momentum-loss rate of the Sun, we exploit the dependence of the wind-braking torque on the effective rotation rate of the coronal magnetic field. This quantity is evaluated by tracing field lines through a Potential Field Source Surface (PFSS) model, driven by ADAPT-GONG magnetograms. The surface rotation rates of the open magnetic field lines are then used to construct an open-flux weighted rotation rate, from which the influence on the wind-braking torque can be estimated. During solar minima, the rotation rate of the corona decreases with respect to the typical solid-body rate (the Carrington rotation period is 25.4 days), as the sources of the solar wind shift towards the slowly-rotating poles. With increasing activity, more solar wind emerges from the Sun's active latitudes which enforces a Carrington-like rotation. The effect of differential rotation on the Sun's current wind-braking torque is found to be small. The wind-braking torque is ~10-15% lower during solar minimum, than assuming solid body rotation, and a few percent larger during solar maximum. For more rapidly-rotating Sun-like stars, differential rotation may play a more significant role, depending on the configuration of the large-scale magnetic field.
description: Accepted to A&A. 12 Pages + Appendix. 9 Figures + 4 Appendix Figures
The effects of magnetic-field geometry on longitudinal oscillations of solar prominences: Cross-sectional area variation for thin tubes
Creators: name: Luna, M.
name: Diaz, A. J.
name: Oliver, R.
name: Terradas, J.
name: Karpen, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Solar prominences are subject to both field-aligned (longitudinal) and transverse oscillatory motions, as evidenced by an increasing number of observations. Large-amplitude longitudinal motions provide valuable information on the geometry of the filament-channel magnetic structure that supports the cool prominence plasma against gravity. Our pendulum model, in which the restoring force is the gravity projected along the dipped field lines of the magnetic structure, best explains these oscillations. However, several factors can influence the longitudinal oscillations, potentially invalidating the pendulum model. The aim of this work is to study the influence of large-scale variations in the magnetic field strength along the field lines, i.e., variations of the cross-sectional area along the flux tubes supporting prominence threads. We studied the normal modes of several flux tube configurations, using linear perturbation analysis, to assess the influence of different geometrical parameters on the oscillation properties. We found that the influence of the symmetric and asymmetric expansion factors on longitudinal oscillations is small.}{We conclude that the longitudinal oscillations are not significantly influenced by variations of the cross-section of the flux tubes, validating the pendulum model in this context.
description: Accepted for publication in Astronomy & Astrophysics
The role of Gephyrin in sleep/wake regulation
Creators: name: ElGrawani, Waleed
Publisher: name: Zenodo
Year: 2024

description: Sleep regulation is a key mechanism that provides tight control of many biological processes. Recent studies have provided new insights into synaptic adaptation to circadian rhythm and sleep homeostasis and have shown sleep as the main contributor to the phosphorylation of synaptic proteins at both excitatory and inhibitory synapses. While the involvement of GABAergic neurotransmission in sleep regulation is acknowledged, the specific contributions of distinct components at GABAergic synapses to natural sleep remain elusive. In this study, we dissect the roles of common GABAA receptor subtypes, a1- or a2-containing GABAA receptors (a1- or a2-GABAARs), in sleep amount and electrophysiology. Our findings underscore the pivotal role of α1-GABAARs, as opposed to α2-GABAARs, in sleep regulation, as evidenced by mice lacking α1-GABAAR displaying prolonged non-rapid eye movement (NREM) sleep during the dark phase accompanied by abnormal electroencephalogram (EEG) patterns across diverse frequencies. Gephyrin clustering has been shown to regulate GABAergic neurotransmission, and its clustering property is modulated by post-translational modifications such as phosphorylation. Proteomic analysis reveals that the interaction between gephyrin and GABRA1 is influenced by sleep. Together with the gephyrin phospho-proteomic analysis, we identified the kinases and phosphorylation sites on gephyrin that are regulated by sleep, and Ser268/Ser270 (S268/270) sites were a promising candidate. Disruption of phosphorylation at these sites significantly affects the time course of sleep and slow-wave activity (SWA) during NREM sleep, contrasting the minimal impact observed upon blocking S303/305 phosphorylation on gephyrin. These novel insights enhance our mechanistic understanding of key GABAergic postsynaptic components orchestrating natural sleep processes.
D7.2 – TREX Web platform
Creators: name: Schillaci, Andrea
Publisher: name: Zenodo
Year: 2020
Subjects: QMC
TREX Web platform

description: The website will also act as the main hub to connect with relevant TREX stakeholders and raise awareness around High Performance Computing (HPC), High-accuracy Quantum Chemistry and Materials Science, and Exascale Computing. This document is intended to present the TREX Web Platform (https://trex-coe.eu) and the plan for its evolution over the three years of the project.
Analytical derivation of DC SQUID response
Creators: name: Soloviev, I. I.
name: Klenov, N. V.
name: Schegolev, A. E.
name: Bakurskiy, S. V.
name: Kupriyanov, M. Yu.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We consider voltage and current responses formation in DC SQUID with overdamped Josephson junctions in resistive and superconducting state in the frame of resistively shunted junction (RSJ) model. For simplicity we neglect the junction capacitance and the noise effect. Explicit expressions for the responses in resistive state were obtained for a SQUID which is symmetrical with respect to bias current injection point. Normalized SQUID inductance $l = 2 e I_c L/\hbar$ (where $I_c$ is the critical current of Josephson junction, $L$ is the SQUID inductance, $e$ is the electron charge and $\hbar$ is the Planck constant) was assumed to be within the range $l \leq 1$, subsequently expanded up to $l \approx 7$ using two fitting parameters. SQUID current response in superconducting state was considered for arbitrary value of the inductance. Impact of small technological spread of parameters relevant for low-temperature superconductor (LTS) technology was studied with generalization of the developed analytical approach for a case of small difference of critical currents and shunt resistances of the Josephson junctions, and inequality of SQUID inductive shoulders for both resistive and superconducting states. Comparison with numerical calculation results shows that developed analytical expressions can be used in practical LTS SQUIDs and SQUID-based circuits design, e.g. large serial SQIF, drastically decreasing the time of simulation.
Reconciling heat-flux and salt-flux estimates at a melting ice-ocean interface
Creators: name: Keitzl, Thomas
name: Mellado, Juan-Pedro
name: Notz, Dirk
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The ratio of heat and salt flux is employed in ice-ocean models to represent ice-ocean interactions. In this study, this flux ratio is determined from direct numerical simulations of free convection beneath a melting, horizontal, smooth ice-ocean interface. We find that the flux ratio at the interface is three times as large as previously assessed based on turbulent-flux measurements in the field. As a consequence, interface salinities and melt rates are overestimated by up to 40\% if they are based on the three-equation formulation. We also find that the interface flux ratio depends only very weakly on the far-field conditions of the flow. Lastly, our simulations indicate that estimates of the interface flux ratio based on direct measurements of the turbulent fluxes will be difficult because at the interface the diffusivities alone determine the mixing and the flux ratio varies with depth. As an alternative, we present a consistent evaluation of the flux ratio based on the total heat and salt fluxes across the boundary layer and reconcile the determinations of the ice-ocean interface conditions.
Dipoena pelorosa Zhu 1998
Creators: name: Gao, Cai-Xia
name: Li, Shu-Qiang
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Theridiidae
Dipoena
Dipoena pelorosa

description: Dipoena pelorosa Zhu, 1998 Dipoena pelorosa Zhu, 1998: 243, figs 160A–E; Song et al., 1999: 112, figs 55I–J, O. Material examined. China, Yunnan, 1♂, Xishuangbanna, Menglun Nature Reserve, secondary tropical seasonal moist forest (21º54.390'N, 101º16.811'E), 10 August 2007, Guo Zheng leg. Distribution. China (Shaanxi, Yunnan).
description: Published as part of Gao, Cai-Xia & Li, Shu-Qiang, 2014, Comb-footed spiders (Araneae: Theridiidae) in the tropical rainforest of Xishuangbanna, Southwest China, pp. 1-135 in Zoological Systematics 39 (1) on page 44, DOI: 10.11865/zs20140101, http://zenodo.org/record/7475365
Theoretical Approach to Electroresistance in Ferroelectric Tunnel Junctions
Creators: name: Chang, Sou-Chi
name: Naeemi, Azad
name: Nikonov, Dmitri E.
name: Gruverman, Alexei
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this paper, a theoretical approach, comprising the non-equilibrium Green's function method for electronic transport and Landau-Khalatnikov equation for electric polarization dynamics, is presented to describe polarization-dependent tunneling electroresistance (TER) in ferroelectric tunnel junctions. Using appropriate contact, interface, and ferroelectric parameters, measured current-voltage characteristic curves in both inorganic (Co/BaTiO$_{3}$/La$_{0.67}$Sr$_{0.33}$MnO$_{3}$) and organic (Au/PVDF/W) ferroelectric tunnel junctions can be well described by the proposed approach. Furthermore, under this theoretical framework, the controversy of opposite TER signs observed experimentally by different groups in Co/BaTiO$_{3}$/La$_{0.67}$Sr$_{0.33}$MnO$_{3}$ systems is addressed by considering the interface termination effects using the effective contact ratio, defined through the effective screening length and dielectric response at the metal/ferroelectric interfaces. Finally, our approach is extended to investigate the role of a CoO$_{x}$ buffer layer at the Co/BaTiO$_{3}$ interface in a ferroelectric tunnel memristor. It is shown that, to have a significant memristor behavior, not only the interface oxygen vacancies but also the CoO$_{x}$ layer thickness may vary with the applied bias.
description: 12 pages
PhD project - Audrey Bonvin
Creators: name: Bonvin, Audrey
Publisher: name: Open Science Framework
Year: 2021
Subjects: subject: Dominance langagière
subject: Relations anaphoriques
subject: Productions narratives
subject: Relations constratstives
subject: Comparaison interlinguistiques
subject: Relations additives
subject: Suisse allemand
subject: Français
subject: Cohésion
subject: Structure informationnelle

description: Annexes de la thèse de doctorat: "Structure informationnelle dans un contexte de bilinguisme: relations additives et contrastives en français et suisse allemand"
Eigenvalue conjecture and colored Alexander polynomials
Creators: name: Mironov, A.
name: Morozov, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Geometric Topology (math.GT)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We connect two important conjectures in the theory of knot polynomials. The first one is the property Al_R(q) = Al_{[1]}(q^{|R|}) for all single hook Young diagrams R, which is known to hold for all knots. The second conjecture claims that all the mixing matrices U_{i} in the relation {\cal R}_i = U_i{\cal R}_1U_i^{-1} between the i-th and the first generators {\cal R}_i of the braid group are universally expressible through the eigenvalues of {\cal R}_1. Since the above property of Alexander polynomials is very well tested, this relation provides a new support to the eigenvalue conjecture, especially for i>2, when its direct check by evaluation of the Racah matrices and their convolutions is technically difficult.
description: 5 pages
Valley-dependent topological edge states in plasma photonic crystals
Creators: name: Li, Jianfei
name: Zhou, Chen
name: Yyao, Jingfeng
name: Yuan, Chengxun
name: Wang, Ying
name: Zhou, Zhongxiang
name: Zhang, Jingwen
name: Kudryavtsev, Anatoly A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Plasma photonic crystals designed in this paper are composed of gas discharge tubes to control the flow of electromagnetic waves. The band structures calculated by the finite element method are consistent with the experimental results in that two distinct attenuation peaks appear in the ranges of 1 GHz to 2.5 GHz and 5 GHz to 6 GHz. Electromagnetic parameters of the plasma are extracted by the Nicolson-Ross-Weir method and effective medium theory. The measured electron density is between 1e11 cm-3 and 1e12 cm-3, which verifies the correctness of the parameter used in the simulation, and the collision frequency is near 1.5e10 Hz. As the band structures are corroborated by the measured scattering parameters, we introduce the concept of photonic topological insulator based on the quantum Valley Hall effect into the plasma photonic crystal. A valley-dependent plasma photonic crystal with hexagonal lattice is constructed, and the phase transition of the valley K(K') occurs by breaking the spatial inversion symmetry. Valley-spin locked topological edge states are generated and excited by chiral sources. The frequency of the non-bulk state can be dynamically regulated by the electron density. This concept paves the way for novel, tunable topological edge states. More interestingly, the Dirac cone is broken when the electron density increases to 3.1e12 cm-3, which distinguishes from the methods of applying a magnetic field and changing the symmetry of the point group.
Spacetime anisotropy affects cosmological entanglement
Creators: name: Pierini, Roberto
name: Moradi, Shahpoor
name: Mancini, Stefano
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Most existing cosmological entanglement studies are focused on the isotropic Robertson-Walker (RW) spacetime. Here we go beyond this limitation and study the influence of anisotropy on entanglement generated by dynamical spacetime. Since the isotropic spacetime is viewed as a background medium and the anisotropy is incorporated as perturbation, we decompose entanglement entropy into isotropic and anisotropic contributions. The latter is shown to be non-negligible by analyzing two cosmological models with weak and conformal coupling. We also show the possibility of using entanglement to infer about universe features.
description: 14 pages
Dipoenura cyclosoides
Creators: name: Gao, Cai-Xia
name: Li, Shu-Qiang
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Theridiidae
Dipoenura
Dipoenura cyclosoides

description: Dipoenura cyclosoides (Simon, 1895) Dipoena cyclosoides Simon, 1894: 562, fig. 573 (nomen nudum); Simon, 1895: 145. Dipoenura cyclosoides Zhu & Zhang, 1997: 22, figs 1A–F; Zhu, 1998: 43, figs 21A–F; Song et al., 1999: 112, figs 58C–D. Material examined. China, Yunnan, 4♂, 6♀, Xishuangbanna, Menglun, primary tropical seasonal rainforest (21º55.035'N, 101º16.500'E), 22 July 2007, Guo Zheng leg.; 5♂, 4♀, Menglun Nature Reserve, secondary tropical seasonal moist forest (21º54.607'N, 101º17.005'E), 28 July 2007, Guo Zheng leg.; 3♂, 1♀, Menglun, Paramichelia baillonii plantation (about 20 years) (21º53.823'N, 101º17.072'E), 16–31 March 2007, Guo Zheng leg. Distribution. China (Guangxi, Hainan, Yunnan); Laos, Sierra Leone.
description: Published as part of Gao, Cai-Xia & Li, Shu-Qiang, 2014, Comb-footed spiders (Araneae: Theridiidae) in the tropical rainforest of Xishuangbanna, Southwest China, pp. 1-135 in Zoological Systematics 39 (1) on page 45, DOI: 10.11865/zs20140101, http://zenodo.org/record/7475365
Mapping the epistemologicaldiversity of Chinese medicine;a Q methodology study
Creators: name: Ward, Trina
Publisher: name: University of Westminster
Year: 2011

description: The diversity of medical practice has been widely documented in ethnographic and historical studies; what remains is to map out that diversity. In this research how such diversity manifests is elicited through asking practitioners their perspectives of how biomedicine influences their Chinese medicine practice. This starting point is chosen since the global dominance of biomedicine inevitably impacts, to varying degrees, on Chinese medicine practices. Q methodology, a unique combination of quantitative and qualitative methods (that challenges such divisions) is chosen for its ability to attain and describe a wide diversity of different subjective perspectives on a topic. Furthermore, this method allows these to arise from the data without a priori definition by the researcher. However, whilst looking at subjective opinions it is not interested in who said what, but rather what is being said about the topic. For subjectivity is seen to be forged in the social milieu; what is of interest is how such opinions group. Acknowledging that Chinese medicine today is not, of course, contained within Chinese borders, international perspectives are sought. The commonly accepted view that the two medical systems, biomedicine and Chinese medicine, used together lead to greater clarity of the whole is challenged, on epistemological grounds, drawing on theories of knowing found in the Chinese medicine literature. Six distinct practices of Chinese medicine were found and described using the term enactment. It is proposed that practitioners can access the differing inter-subjectively formed Chinese medicines using the patient body as a boundary object. Through capturing the richness and complexity of various points of view this research can identify points of both conflict and consensus that can offer directions for future practice, education and particularly clinical research design. It offers a contribution to the Q methodology literature through applying method assemblage in the analysis of factors. Thus, the neutral zone is rendered as important in understanding the narrative of the factor as are the points of most and least agreement.
On curvature-squared invariants of minimal five-dimensional supergravity from superspace
Creators: name: Gold, Gregory
name: Hutomo, Jessica
name: Khandelwal, Saurish
name: Tartaglino-Mazzucchelli, Gabriele
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We elaborate on the off-shell superspace construction of curvature-squared invariants in minimal five-dimensional supergravity. This is described by the standard Weyl multiplet of conformal supergravity coupled to two compensators being a vector multiplet and a linear multiplet. In this set-up, we review the definition of the off-shell two-derivative gauged supergravity together with the three independent four-derivative superspace invariants defined in arXiv:1410.8682. We provide the explicit expression for the linear multiplet based on a prepotential given by the logarithm of the vector multiplet primary superfield. We then present for the first time the primary equations of motion for minimal gauged off-shell supergravity deformed by an arbitrary combination of these three four-derivative locally superconformal invariants. We also identify a four-derivative invariant based on the linear multiplet compensator and the kinetic superfield of a vector multiplet which can be used to engineer an alternative supersymmetric completion of the scalar curvature squared.
description: 35 pages. v2: minor corrections, typos corrected
The structure effects in polarization and cross section in inelastic A(p,p')X reaction with the 40Ca and 12C nuclei at 1 GeV
Creators: name: Miklukho, O. V.
name: Kisselev, A. Yu.
name: Amalsky, G. M.
name: Andreev, V. A.
name: Gavrilov, G. E.
name: Izotov, A. A.
name: Kozlenko, N. G.
name: Kravchenko, P. V.
name: Levchenko, M. P.
name: Novinskiy, D. V.
name: Prokofiev, A. N.
name: Shvedchikov, A. V.
name: Trush, S. I.
name: Zhdanov, A. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The polarization of the secondary protons in inelastic (p,p') reaction on the 40Ca and 12C nuclei at the initial proton energy 1 GeV was measured in the wide range of the scattered proton momenta at a laboratory angle 21 degree. The cross section of the reactions were measured as well. The outgoing protons from the reaction were detected using a magnetic spectrometer equipped with a multiwire-proportional chambers polarimeter. A structure in the polarization and cross section data, related probably to scattering of the nucleon correlation in the nuclei, was observed.
description: 13 pages, 5 figures, 7 tables
Jeffery's orbits and microswimmers in flows: A theoretical review
Creators: name: Ishimoto, Kenta
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: In this review, we provide a theoretical introduction to Jeffery's equations for the orientation dynamics of an axisymmetric object in a flow at low Reynolds number, and review recent theoretical extensions and applications to the motions of self-propelled particles, so-called microswimmers, in external flows. Bacteria colonize human organs and medical devices even with flowing fluid, microalgae occasionally cause huge harmful toxic blooms in lakes and oceans, and recent artificial microrobots can migrate in flows generated in well-designed microfluidic chambers. The Jeffery equations, a simple set of ordinary differential equation, provide a useful building block in modeling, analyzing, and understanding these microswimmer dynamics in a flow current, in particular when incorporating the impact of the swimmer shape since the equations contain a shape parameter as a single scalar, known as the Bretherton parameter. The particle orientation forms a closed orbit when situated in a simple shear, and this non-uniform periodic rotational motion, referred to as Jeffery's orbits, is due to a constant of motion in the non-linear equation. After providing a theoretical introduction to microswimmer hydrodynamics and a derivation of the Jeffery equations, we discuss possible extensions to more general shapes, including those with rapid deformation. In the latter part of this review, simple mathematical models of microswimmers in different types of flow fields are described, with a focus on constants of motion and their relation to periodic motions in phase space, together with a breakdown of degenerate orbits, to discuss the stable, unstable, and chaotic dynamics of the system. The discussion in this paper will provide a comprehensive theoretical foundation for Jeffery's orbits and will be useful to understand the motions of microswimmers under various flows.
description: 26 pages, 13 figures. To appear in the Journal of the Physical Society of Japan
On uniqueness of solutions to martingale problems --- counterexamples and sufficient criteria
Creators: name: Kallsen, Jan
name: Krühner, Paul
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 47G30, 60J35, 60J75

description: The dynamics of a Markov process are often specified by its infinitesimal generator or, equivalently, its symbol. This paper contains examples of analytic symbols which do not determine the law of the corresponding Markov process uniquely. These examples also show that the law of a polynomial process is not necessarily determined by its generator. On the other hand, we show that a combination of smoothness of the symbol and ellipticity warrants uniqueness in law. The proof of this result is based on proving stability of univariate marginals relative to some properly chosen distance.
Dipoenura fimbriata Simon 1909
Creators: name: Gao, Cai-Xia
name: Li, Shu-Qiang
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Theridiidae
Dipoenura
Dipoenura fimbriata

description: Dipoenura fimbriata Simon, 1909 Dipoenura fimbriata Simon, 1909: 95. Material examined. China, Yunnan, 2♂, 1♀, Xishuangbanna, Menglun Nature Reserve, secondary tropical montane evergreen broad-leaved forest (21º57.809'N, 101º12.173'E), 4 August 2007, Guo Zheng leg. Distribution. China (Yunnan); Krakatau, Vietnam.
description: Published as part of Gao, Cai-Xia & Li, Shu-Qiang, 2014, Comb-footed spiders (Araneae: Theridiidae) in the tropical rainforest of Xishuangbanna, Southwest China, pp. 1-135 in Zoological Systematics 39 (1) on page 45, DOI: 10.11865/zs20140101, http://zenodo.org/record/7475365
Spectral analysis of short period of K indices registered in Huancayo Geomagnetic Observatory
Creators: name: Rosales, Domingo
name: Vidal, Erick
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Wavelet spectral analysis is applied to the daily indices K (SK) registered in Huancayo geomagnetic observatory from 2000.0 to 2015.0, it has become possible to identify predominant periodic components with a confidence level of 95%. In particular we have investigated the periodicity of 27.0 days and its 13.5, 9.0 and 6.8 harmonics, related to the fundamental period of solar rotation effects. A special analysis registered on periods of 59.0 days might be related to the double period of 29.53 days corresponding to the synodic month. The manifestation of the periods of 182.6, 365 and 730 days corresponding to the harmonics of the seasonal variation of the annual cycle is also observed. An important observation is that the global predominant periods registered 6.8 and 9.0 days, in the years 2009, 2013 and 2014 its effect is too small or null, those periods corresponds to the minimum and maximum solar activity. On the other hand, it is observed that the order of predominance of the harmonic period solar rotation are different for each solar cycle (Solar Cycle 23: 9.0, 13.5, 27.0 and 6.8 days; solar cycle 24: 27.0, 13.5, 9.0 and 6.8 days), and it is weaker contribution in the solar cycle 24 with respect to the solar cycle 23.
description: 5 pages,1 figure, in Spanish
A model-independent method with phantom divide line crossing in Weyl-type $f(Q,T)$ gravity
Creators: name: Koussour, M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the history of the cosmos using an extension of symmetric teleparallel gravity, namely Weyl-type $f(Q,T)$ gravity, where $Q$ represents the non-metricity scalar of space-time in the standard Weyl form, completely specified by the Weyl vector $w_{μ}$, and $T$ represents the trace of the matter energy-momentum tensor. We derive the Hubble parameter from the proposed form of the time-dependent deceleration parameter $q=A-% \frac{B}{H^{2}}$, where $A$ and $B$ are free constants and then use a model-independent method to apply it to the Friedmann equations of Weyl-type $f(Q,T)$ gravity. Further, we determine the best fit values of the model parameters using new Hubble sets of data of 31 points and Type Ia Supernovae (SNe Ia) sets of data of 1048 points. Finally, we examine the behavior of the effective equation of state~(EoS)~parameter and we observe that the best fit values of the model parameters supports a crossing of the phantom divide line i.e. $ω_{eff}=-1$ from $ω_{eff}>-1$ (quintessence phase) to $ω_{eff}<-1$ (phantom phase). According to the current study, Weyl-type $f(Q,T)$ gravity can give an alternative to dark energy (DE) in solving the existing cosmic acceleration.
description: Submitted to CJPHY
The characteristic initial value problem for the conformally invariant wave equation on a Schwarzschild background
Creators: name: Hennig, Jörg
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We resume former discussions of the conformally invariant wave equation on a Schwarzschild background, with a particular focus on the behaviour of solutions near the 'cylinder', i.e. Friedrich's representation of spacelike infinity. This analysis can be considered a toy model for the behaviour of the full Einstein equations and the resulting logarithmic singularities that appear to be characteristic for massive spacetimes. The investigation of the Cauchy problem for the conformally invariant wave equation (Frauendiener and Hennig 2018, Class. Quantum Grav. 35, 065015) showed that solutions generically develop logarithmic singularities at infinitely many expansion orders at the cylinder, but an arbitrary finite number of these singularities can be removed by appropriately restricting the initial data prescribed at $t=0$. From a physical point of view, any data at $t=0$ are determined from the earlier history of the system and hence not exactly 'free data'. Therefore, it is appropriate to ask what happens if we 'go further back in time' and prescribe initial data as early as possible, namely at a portion of past null infinity, and on a second past null hypersurface to complete the initial value problem. Will regular data at past null infinity automatically lead to a regular evolution up to future null infinity? Or does past regularity restrict the solutions too much, and regularity at both null infinities is mutually exclusive? Or do we still have suitable degrees of freedom for the data that can be chosen to influence regularity of the solutions to any desired degree? In order to answer these questions, we study the corresponding characteristic initial value problem. In particular, we investigate in detail the appearance of singularities at expansion orders $n=0,\dots,4$ for angular modes $\ell=0,\dots,4$.
description: 21 pages, 1 figure