cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Relativistic spin operators in various electromagnetic environments
Creators: name: Bauke, Heiko
name: Ahrens, Sven
name: Keitel, Christoph H.
name: Grobe, Rainer
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Different operators have been suggested in the literature to describe the electron's spin degree of freedom within the relativistic Dirac theory. We compare concrete predictions of the various proposed relativistic spin operators in different physical situations. In particular, we investigate the so-called Pauli, Foldy-Wouthuysen, Czachor, Frenkel, Chakrabarti, Pryce, and Fradkin-Good spin operators. We demonstrate that when a quantum system interacts with electromagnetic potentials the various spin operators predict different expectation values. This is explicitly illustrated for the scattering dynamics at a potential step and in a standing laser field and also for energy eigenstates of hydrogenic ions. Therefore, one may distinguish between the proposed relativistic spin operators experimentally.
title: Towards a Post-Heteronormative Society
title: Exploring the Interpretation and Negotiation of Gender Equity in the Uniform Policies of English Primary Schools
titleType: Subtitle
Creators: name: Jordan, Emma
Publisher: name: Lancaster University
Year: 2023

description: This thesis brings the literature on uniform, gender equity and heteronormativity into conversation with the lived experiences of primary school staff and governors in England through a consideration of two research questions: 1. To what extent are school uniform policies compliant with the DfE School Uniform Guidance? 1.1 Does the uniform policy specify different clothing for boys and girls? 1.2 Are girls and LGBTQ+ pupils disadvantaged by the policy options they are given? 2. Can school uniform policies support gender equity? 2.1 What explanations are given for the choice of current policy? 2.2 How could the school adapt the policy to provide equal and appropriate provision for LGBTQ+ children? 2.3 Are there any barriers to making these changes and how could these be overcome? I draw on interviews with staff and governors at fifteen primary schools in Nottinghamshire to answer these questions. I argue that in its present format the DfE Guidance has had a limited impact on uniform equity. Nearly a decade since it was first published schools continue to maintain policies that do not account for cultural needs and have a huge financial impact on low-income families. Furthermore, many only recognise the gender binary and have gender biased uniform specifications that disadvantage girls and LGBTQ+ children. This study makes an original contribution to current discourses about school uniform legislation through a consideration of the impact of school uniform policies on LGBTQ+ children. I assert that a primary factor contributing to the success or failure of schools to provide gender equity is awareness, not a lack of skill, time, or money. Neither legislation or funding currently protects LGBTQ+ children from experiencing less than equal provision within the English education system. I recommend that the Department of Education passes legislation requiring all schools in England to implement inclusive, non-prescriptive, gender-neutral school uniform policies.
Shadows of black holes with dark matter halo
Creators: name: Xavier, Sérgio V. M. C. B.
name: Junior, Haroldo C. D. Lima
name: Crispino, Luís C. B.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the shadow of an exact black hole solution of Einstein's equations recently proposed by Cardoso et al., to describe a supermassive black hole immersed in a dark matter halo. We analyze and discuss the light rings and the gravitational lensing of this spacetime comparing them with an isolated Schwarzschild black hole. Using backward ray-tracing techniques, we study the shadows cast by such black hole when illuminated by a celestial sphere that emits radiation isotropically. We find that when the dark matter distribution concentrates near the event horizon of the black hole, multiple light rings emerge. In this high compactness regime, the shadows and gravitational lensing are significantly different from the Schwarzschild one. We also use the M87* and SgrA* shadow data, obtained by the Event Horizon Telescope collaboration, to constrain the parameters of the dark matter halo.
description: 8 pages, 6 figures
Multi-tops at the LHC
Creators: name: Deandrea, Aldo
name: Deutschmann, Nicolas
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The experiments at the LHC are searching for many different final states that can hint to the presence of new physics beyond the Standard Model. One of the most interesting and promising sectors for these searches is that of the top quark, for both theoretical and phenomenological reasons linked to its large mass and to its possible special role in the electroweak symmetry breaking sector. We suggest that multi-top events, beyond the standard $t$-$\bar t$ and four top searches, can bring further insight in constraining and discovering physics beyond the Standard Model, taking advantage of experimental techniques similar to those used in present top-quark analyses. This is relevant both for the next data taking runs at the LHC and even more at higher luminosity and higher energy collider options, which are discussed for future LHC upgrades and future accelerators. In particular we consider six top and eight top final states, discussing the generic colour representations for beyond the Standard Model particles giving rise to those final state. We also discuss the limits which can be extracted by using the present analyses sensitive to four top final states, as well as the potential bounds from new searches we propose to experimental collaborations as an alternative.
description: 16 pages
Tunable bilayer Hubbard model physics in twisted WSe2
Creators: name: Xu, Yang
name: Kang, Kaifei
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Mak, Kin Fai
name: Shan, Jie
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Moiré materials with flat electronic bands provide a highly controllable quantum system for studies of strong-correlation physics and topology. In particular, angle-aligned heterobilayers of semiconducting transition metal dichalcogenides (TMDs) with large band offset realize the single-band Hubbard models. Introduction of a new layer degree of freedom is expected to foster richer interactions, enabling Hund's physics, interlayer exciton condensation and new superconducting pairing mechanisms to name a few. Here, we report competing electronic orders in twisted AB-homobilayer WSe2, which realizes a bilayer Hubbard model in the weak interlayer hopping limit for holes. We characterize the charge order, layer polarization and magnetization of the moiré bilayer, subjected to an out-of-plane electric and magnetic field, by exciton sensing and magneto circular dichroism measurements. By layer-polarizing holes via the electric field, we observe a crossover from an excitonic insulator to a charge-transfer insulator at hole density of $ν$=1 (in unit of moiré density), a transition from a paramagnetic to an antiferromagnetic charge-transfer insulator at $ν$=2, and evidence for a layer-selective Mott insulator at 1<$ν$<2. The unique coupling of charge and spin to external fields also manifests a giant magneto-electric response. Our results establish a new solid-state simulator for problems in strong-correlation physics that are described by bilayer Hubbard models.
Additional file 1 of Primary URECs: a source to better understand the pathology of renal tubular epithelia in pediatric hereditary cystic kidney diseases
Creators: name: Ziegler, Wolfgang H.
name: Lüdiger, Sarah
name: Hassan, Fatima
name: Georgiadis, Margarita E.
name: Swolana, Kathrin
name: Khera, Amrit
name: Mertens, Arne
name: Franke, Doris
name: Wohlgemuth, Kai
name: Dahmer-Heath, Mareike
name: König, Jens
name: Dafinger, Claudia
name: Liebau, Max C.
name: Cetiner, Metin
name: Bergmann, Carsten
name: Soetje, Birga
name: Haffner, Dieter
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Fig. S1. Distribution of kidney volumes within the different patient groups. Filled circles give values of right kidney (A) and total kidney (both organs) (B) as body surface-area related kidney volumes (RV/BSA) [21]. Median values of cohorts and normal range of body-surface-area related renal volume for one organ (grey bar) are indicated. Statistics for (A) p < 0.05, Kruskal-Wallis, Dunn’s and (B) p < 0.05, ANOVA, Tukey’s confirm increased kidney size for both organs in ARPKD as compared to NPH and BBS cohorts. Distribution of values corresponds to expected range for respective patient cohorts. Table S1. Distribution of gene variants.
THE PERCEPTION OF POLISH AGRICULTURE BY FOOD CONSUMERS
Creators: name: HENRYK, RUNOWSKI
name: PAULINA, KRAMARZ
name: HENRYK, RUNOWSKI
name: PAULINA, KRAMARZ
Publisher: name: Unknown
Year: 2022
Subjects: subject: Agricultural and Food Policy
subject: Consumer/Household Economics
subject: agriculture
subject: information
subject: trust-building
subject: farmers
subject: consumers

description: The aim of the study was to determine the factors determining the perception of Polish agriculture by food consumers. With intensive changes in the methods of agricultural production, the progressive digitalization of agriculture, more and more frequent discussion of the issue of social responsibility of agriculture (in the context of caring about the condition of the natural environment or ensuring the welfare of farm animals), streams of much, often contradictory, information appearing in the media make some consumers unable to express their opinions on the condition of Polish agriculture unequivocally. The research has shown that factors such as trust, the state of knowledge or feeling of being properly informed about the course of agricultural production have a clear influence on the formation of a consumer’s positive or negative attitude towards Polish agriculture, as well as on the assessment of its modernity. The key in shaping respondent opinions turned out to be the possession of information and the inclination to obtain it.
Observation of Wigner cusps in a metallic carbon nanotube
Creators: name: Blue, B. T.
name: Tsuchikawa, R.
name: Ahmadi, A.
name: Zhang, Z.
name: Heligman, D.
name: Lough, S. D.
name: Hone, J.
name: Mucciolo, E. R.
name: Ishigami, M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Previous gate-dependent conductance measurements of metallic carbon nanotubes have revealed unexplainable conductance suppressions, occurring at two different gate voltages. These were previously attributed to the gate-dependency of contact resistance. Our gate-dependent conductivity measurements on a metallic nanotube with known chirality show that these bimodal conductance suppressions are the manifestations of Wigner cusps, often seen in atomic and nuclear physics experiments.
description: 6 pages, 3 figures
Pangeo@Galaxy: Big data geoscience at your fingertips
Creators: name: Fouilloux, Anne
Publisher: name: Zenodo
Year: 2023
Subjects: galaxy
climate
pangeo
xarray
open science

description: Introduction to Pangeo@Galaxy to FAIR-Ease project (https://fairease.eu/). This presentation was followed by a short demonstration to explain how to start a Pangeo Notebook on Galaxy and where to find the corresponding training material on the Galaxy Training Network website. Training material shown during the demo: - Pangeo Notebook in Galaxy - Introduction to Array - Pangeo ecosystem 101 for everyone - Introduction to Xarray Galaxy Tools
description: This work was produced for the NeIC NICEST2 project, that is supported by the Nordic e-Infrastructure Collaboration (NeIC), which is part of NordForsk.
Magnetic helicity of global field in cycles 23 and 24
Creators: name: Pipin, V. V.
name: Pevtsov, A. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: For the first time we reconstruct the magnetic helicity density of global axisymmetric field of the Sun using method proposed by Brandenburg et al. (2003) and Pipin et al. (2013). To determine the components of the vector potential, we apply the gauge which is typically employed in mean-field dynamo models. This allows for a direct comparison of reconstructed helicity with the predictions from the mean-field dynamo models. We apply the method to two different data sets: the synoptic maps of line-of-sight (LOS) magnetic field from the Michelson Doppler Imager (MDI) on board of Solar and Heliospheric Observatory (SOHO) and vector magnetic field measurements from Vector Spectromagnetograph (VSM) on Synoptic Optical Long-term Investigations of the Sun (SOLIS) system. Based on the analysis of MDI/SOHO data, we find that in solar cycle 23 the global magnetic field had positive (negative) magnetic helicity in the northern (southern) hemisphere. This hemispheric sign asymmetry is opposite to helicity of solar active regions, but it is in agreement with the predictions of mean-field dynamo models. The data also suggest that the hemispheric helicity rule may have reversed its sign in early and late phases of cycle 23. Furthermore, the data indicate an imbalance in magnetic helicity between the northern and southern hemispheres. This imbalance seem to correlate with the total level of activity in each hemisphere in cycle 23. Magnetic helicity for rising phase of cycle 24 is derived from SOLIS/VSM data, and qualitatively, its latitudinal pattern is similar to the pattern derived from SOHO/MDI data for cycle 23.
description: 25 pages, 9 figures, accepted for ApJ
Evolution of lattice, spin, and charge properties across the phase diagram of FeSe$_{1-x}$S$_x$
Creators: name: Lazarevic, N.
name: Baum, A.
name: Milosavljevic, A.
name: Peis, L.
name: Stumberger, R.
name: Bekaert, J.
name: Solajic, A.
name: Pesic, J.
name: Wang, Aifeng
name: Scepanovic, M.
name: Milosevic, M. V.
name: Petrovic, C.
name: Popovic, Z. V.
name: Hackl, R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A Raman scattering study covering the entire substitution range of the FeSe$_{1-x}$S$_x$ solid solution is presented. Data were taken as a function of sulfur concentration $x$ for $0\le x \le 1$, of temperature and of scattering symmetry. All type of excitations including phonons, spins and charges are analyzed in detail. It is observed that the energy and width of iron-related B$_{1g}$ phonon mode vary continuously across the entire range of sulfur substitution. The A$_{1g}$ chalcogenide mode disappears above $x=0.23$ and reappears at a much higher energy for $x=0.69$. In a similar way the spectral features appearing at finite doping in A$_{1g}$ symmetry vary discontinuously. The magnetic excitation centered at approximately 500 cm$^{-1}$ disappears above $x=0.23$ where the A$_{1g}$ lattice excitations exhibit a discontinuous change in energy. The low-energy mode associated with fluctuations displays maximal intensity at the nemato-structural transition and thus tracks the phase boundary.
Free boson realization of the Dunkl intertwining operator in one dimension
Creators: name: Vinet, Luc
name: Zhedanov, Alexei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 81Q80, 33C45

description: The operator that intertwines between the $\mathbb{Z}_2$ - Dunkl operator and the derivative is shown to have a realization in terms of the oscillator operators in one dimension. This observation rests on the fact that the Dunkl intertwining operator maps the Hermite polynomials on the generalized Hermite polynomials.
description: 10 pages. Dedicated to the memory of Ji\v{r}i Patera
'LONDON UNDER ATTACK.' ANARCHIA E IMMAGINARIO URBANO.
Creators: name: MONEGATO, EMANUELE
Publisher: name: Universit� degli Studi di Milano
Year: 2011

description: ?London under attack. Anarchia e immaginario urbano? aims at detecting the characterisation of both terrorist violence and anarchy during London fin de si�cle. Opening up to contemporary cultural representations in a post 9/11 age, this PhD dissertation tackles anarchic narrations like The Secret Agent by J. Conrad, Princess Casamassima by H. James and the graphic novel V for Vendetta in order to map the development of the terrorist threat within the field of British culture.
PUHURI Deliverable D.A1.1 Current Status report
Creators: name: Emma-Lisa Hansson
name: Laitinen, Jarno
name: Livenson, Ilja
name: Saar, Ahti
name: Sjöström, Anders
name: Voutilainen, Elina
Publisher: name: Zenodo
Year: 2022
Subjects: Puhuri
AAI
MyAccessID

description: Deliverable D.A1.1 Current state report addresses the current state of Puhuri project, covering the state of its stakeholders (service providers, resource allocators, MyAccessID AAI users), architecture, business model including the current cost structure and GDPR compliance. Puhuri is a solution for resource allocation, project management, and accounting coupled with an infrastructure for authentication and authorisation (AAI). Puhuri’s vision is to provide seamless access to pan-European computing and HPC adjacent services for researchers and industrial users.
The factorization method and Capon's method for random source identification in experimental aeroacoustics
Creators: name: Griesmaier, Roland
name: Raumer, Hans-Georg
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 35R30, (65N21)

description: Experimental aeroacoustics is concerned with the estimation of acoustic source power distributions, which are for instance caused by fluid structure interactions on scaled aircraft models inside a wind tunnel, from microphone array measurements of associated sound pressure fluctuations. In the frequency domain aeroacoustic sound propagation can be modelled as a random source problem for a convected Helmholtz equation. This article is concerned with the inverse random source problem to recover the support of an uncorrelated aeroacoustic source from correlations of observed pressure signals. We show that a variant of the factorization method from inverse scattering theory can be used for this purpose. We also discuss a surprising relation between the factorization method and a commonly used beamforming algorithm from experimental aeroacoustics, which is known as Capon's method or as the minimum variance method. Numerical examples illustrate our theoretical findings.
Short-period pulsar oscillations following a glitch
Creators: name: van Eysden, C. Anthony
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Following a glitch, the crust and magnetized plasma in the outer core of a neutron star are believed to rapidly establish a state of co-rotation within a few seconds by process analogous to classical Ekman pumping. However, in ideal magnetohydrodynamics, a final state of co-rotation is inconsistent with conservation of energy of the system. We demonstrate that, after the Ekman-like spin up is completed, magneto-inertial waves continue to propagate throughout the star, exciting torsional oscillations in the crust and plasma. The crust oscillation is irregular and quasi-periodic, with a dominant frequency of the order of seconds. Crust oscillations commence after an Alfvén crossing time, approximately half a minute at the magnetic pole, and are subsequently damped by the electron viscosity over approximately an hour. In rapidly rotating stars, the magneto-inertial spectrum in the core approaches a continuum, and crust oscillations are damped by resonant absorption analogous to quasi-periodic oscillations in magnetars. The oscillations predicted are unlikely to be observed in timing data from existing radio telescopes, but may be visible to next generation telescope arrays.
description: 38 Pages, 8 Figures, accepted to the Astrophysical Journal
An executable compendium prepared with rang
Creators: name: Chan, Chung-hong
Publisher: name: Zenodo
Year: 2023
Subjects: reproducibility
docker

description: This executable compendium was created by the authors of rang. However, the data and code are shared by Oser et al. The authors of rang claims no ownership to the data and code shared by Oser et al.
Casimir cosmology
Creators: name: Leonhardt, Ulf
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In 1998 astronomers discovered that the expansion of the universe is accelerating. Somehow, something must have made gravity repulsive on cosmological scales. This something was called dark energy; it is described by Einstein's cosmological constant; and it amounts to about 70% of the total mass of the universe. It has been conjectured that the cosmological constant is a form of vacuum energy, but its prediction from quantum field theory has failed by many orders of magnitude, until recently. Informed by empirical evidence on Casimir forces, Lifshitz theory has not only produced the correct order of magnitude, but is quantitatively consistent with the astronomical data. Moreover, the theory appears to resolve the tension between the measured and the predicted Hubble constant. There is therefore a good chance that Casimir physics explains dark energy. This article introduces cosmology for practitioners of vacuum forces as part of "The State of the Quantum Vacuum: Casimir Physics in the 2020s" edited by K. A. Milton. It may also be interesting for other physicists and engineers who wish to have a concise introduction to cosmology.
Additional file 1 of In situ XRF investigations to unravel the provenance area of Corinthian ware from excavations in Milazzo (Mylai) and Lipari (Lipára)
Creators: name: Belfiore, Cristina M.
name: Mastelloni, Maria A.
name: Barone, Germana
name: Mazzoleni, Paolo
Publisher: name: figshare
Year: 2022
Subjects: Archaeology

description: Additional file 1. Standardization of major (A) and minor/trace elements (B) by using 39 international mineral and rock standards (blue circles) and 11 internal ceramic standards (orange circles).
Three-point functions in the SU(2) sector at strong coupling
Creators: name: Kazama, Yoichi
name: Komatsu, Shota
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Extending the methods developed in our previous works (arXiv:1110.3949, arXiv:1205.6060), we compute the three-point functions at strong coupling of the non-BPS states with large quantum numbers corresponding to the composite operators belonging to the so-called SU(2) sector in the $\mathcal{N}=4$ super-Yang-Mills theory in four dimensions. This is achieved by the semi-classical evaluation of the three-point functions in the dual string theory in the $AdS_3 \times S^3$ spacetime, using the general one-cut finite gap solutions as the external states. In spite of the complexity of the contributions from various parts in the intermediate stages, the final answer for the three-point function takes a remarkably simple form, exhibiting the structure reminiscent of the one obtained at weak coupling. In particular, in the Frolov-Tseytlin limit the result is expressed in terms of markedly similar integrals, however with different contours of integration. We discuss a natural mechanism for introducing additional singularities on the worldsheet without affecting the infinite number of conserved charges, which can modify the contours of integration.
description: 128 pages (A summary is given in section 1); v2 minor improvements
title: Imaging Techniques for Multi-Parameter Determination in Mixture Formation and Combustion Processes
Creators: name: Zigan, Lars
Publisher: name: Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
Year: 2020
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten

description: Tracer-based measurement techniques such as laser-induced phosphorescence (LIP) and laser-induced fluorescence (LIF) are powerful means for multi-parameter imaging in the gas phase of thermodynamic systems and especially in reactive flows. The simultaneous measurement of temperature, species concentrations and velocity provides deep insights into the complex processes of mixture formation, combustion and pollutant emissions. This is relevant for many technical applications in power and process engineering, while the major field covered in this thesis are IC engines. The present habilitation thesis gives a review of LIP and LIF techniques for multi-parameter imaging and a summary of the research activities on refinement of these diagnostics conducted under the guidance of the author at LTT Erlangen. In the area of LIP, the work focusses on high temperature thermometry and velocimetry for which new thermographic phosphor materials are developed. The main part of the work is the optimization of the optical properties of the phosphor YAG:Dy and its derivatives, which are especially designed for application under high temperature conditions. Co-doping and host material modification are conducted to enhance signal intensity and to increase temperature sensitivity. The accuracy of tracer-LIF techniques is improved by identification of partial tracer decomposition and oxidation during LIF-signal calibration. A new tracer for diesel engine relevant conditions is chosen and calibrated in a wide temperature and pressure range. A novel approach for simultaneous measurement of fuel-air ratio (FAR) and temperature is proposed, and detailed calibration data was presented. Additionally, a novel “2-tracer” approach for simultaneous measurement of mixture temperature, FAR and exhaust gas concentration is developed in the framework of this thesis. For this purpose, the tracer-interactions are studied, which could potentially lead to larger measurement errors. Finally, measurement examples are presented for fundamental and applied research including thermometry in a heated air jet, temperature and fuel concentration measurements in a diesel spray and a DISI spray as well as multi-parameter analysis of the mixture formation in a modern Direct-Injection Spark-Ignition (DISI) engine with exhaust gas recirculation (EGR). The tracer-LIF technique is finally applied to study the influence of ethanol admixture to gasoline on the evaporation and mixture formation characteristics, which delivered deep insights into soot formation in a DISI IC engine.
Il giudizio di querela di falso: natura ed oggetto
Creators: name: Widmann, Paola
Publisher: name: Universit� degli Studi di Trento
Year: 2020

description: Profilo da sempre controverso con riferimento alla querela di falso, ed al contempo di rilievo dirimente nel delineare la fisionomia dell'istituto, � quello che attiene alla natura e all'oggetto del relativo giudizio. � su tale aspetto che si incentra, in prima battuta, la presente indagine; la quale si ripropone poi, nella sua seconda parte, di muovere dalle premesse ricostruttive cos� definite per delineare i tratti caratterizzanti essenziali del procedimento ex artt. 221 ss. c.p.c. (a cominciare dalla compagine soggettiva del giudizio e dall?efficacia della sentenza cui esso pone capo). In tal modo la disamina dell'istituto della querela di falso ? avuto riguardo alla prospettata qualificazione del relativo giudizio come processo costitutivo diretto ad incidere (in senso estintivo) su di un rapporto giuridico di natura processuale ? viene a lambire alcune delle pi� affascinanti e controverse tematiche della dogmatica processual-civilistica, quali quelle del contenuto della sentenza costitutiva e, pi� in generale, dell?oggetto dell'accertamento giudiziale; al contempo, la questione della possibilit� o meno di rintracciare una situazione giuridica soggettiva azionata con la domanda di querela di falso impone all?a. di misurarsi con la categoria dei c.d. processi a contenuto oggettivo. L?indagine cos� condotta non pu� peraltro prescindere, quali ineludibili direttrici di ricerca, dal raffronto della querela di falso con l?attiguo istituto della verificazione di scrittura privata, dal riferimento ad alcuni profili della disciplina processual-penalistica in punto di falsit� documentale, nonch� da uno sguardo al regime del falso civile come delineato in ordinamenti giuridici diversi da quello italiano vigente.
The development of an axial flux generator, hand crankable up to 200 W.
Creators: name: Anjum, Samad
Publisher: name: Lancaster University
Year: 2023

description: When a magnet moves past a wire coil, an electromagnetic force (EMF) is generated in that coil. Compared to radial flux electrical machines, axial flux electrical machines present a larger magnet area for greater EMF generation. This makes them a good candidate for contemporary energy generation technologies. For this project, Koitech Global Limited commissioned the development of a kinetic generator for hand cranked charging of their (currently in development) lithium-ion hybrid capacitor (LIC) based power bank. Building on the foundations of electromagnetic induction, a prototype axial flux generator driven through a speed increasing epicyclic transmission was produced. The generator was designed with a central rotor mounted on a shaft, with the stator assembled on both sides of this to achieve a large number of windings in a compact design. Small air gaps (less than 1 mm thick) were achieved with a unique threaded shaft construction, and an accompanying two stage 13.69:1 speed increasing epicyclic gearbox was built, with which to drive the rotor. A technique of interlacing cores on both sides of the generator helped to reduce cogging by doubling the number of detents and reducing the cogging torque between them, making arm cranking feel easier and smoother for the researcher. With electromagnetic simulations conducted with which to compare performance data to, the generator was tested on a benchtop to characterise its EMF, electrical load performance and efficiency. Clamped to a laboratory benchtop and cranked at up to two arm revolutions per second under the testing of the researcher, the device generated 100 W through a light bulb electrical load aerobically, and up to 200 W was generated under the application of anaerobic loads, with up to 80% efficiency. This prototype kinetic generator was built larger than the requirements set out by Koitech but there is potential for significant size reduction to achieve the size requirements specified by the company without significant loss of performance. The conducted research and development of the kinetic generator leaves Koitech in a strong position to finish the development of their power bank product, with the currently outstanding task being to develop the LIC charging electronics to be able to demonstrate the product concept to external investors, before further research and development of the unit to improve its performance and efficiency can commence. These aspects of research and development are discussed in this report.
Quasi-classical theory of tunneling spectroscopy in superconducting topological insulator
Creators: name: Takami, Shota
name: Yada, Keiji
name: Yamakage, Ai
name: Sato, Masatoshi
name: Tanaka, Yukio
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We develop a theory of tunneling spectroscopy in superconducting topological insulator (STI), i.e. superconducting state of a carrier-doped topological insulator. Based on the quasi-classical approximation, we obtain an analytical expression of the energy dispersion of surface Andreev bound states (ABSs) and a compact formula for tunneling conductance of normal metal/STI junctions. The obtained compact formula of tunneling conductance makes the analysis of experimental data easy. As an application of our theory, we study tunneling conductance in Cu$_x$Bi$_2$Se$_3$. We reveal that our theory reproduces the previous results by Yamakage {\it et al} [Phys. Rev. B 85, 180509(R) (2012)]. We further study magneto-tunneling spectroscopy in the presence of external magnetic fields, where the energy of quasiparticles is shifted by the Doppler effect. By rotating magnetic fields in the basal plane, we can distinguish between two different topological superconducting states with and without point nodes, in their magneto-tunneling spectra.
description: 12 pages, 14 figures
Direct counterfactual quantum communication protocol beyond single photon source
Creators: name: Li, Zheng-Hong
name: Feng, Shang-Yue
name: Al-Amri, M.
name: Zubairy, M. Suhail
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The direct counterfactual quantum communication protocol involving double chained Mach-Zehnder interferometers requires a single photon input. Here, we show that even with multiphoton light sources, including a strong coherent light source as inputs, the counterfactual communication can be achieved with success probability approaching unity in the ideal asymptotic limit. The path evolution of multiple photons is non-locally controlled. Thus, information is transmitted without any photons, or any other auxiliary information carriers, appearing in the public transmission channel. The effect is quantum since quantum measurements are essential requirement for this protocol. Furthermore, a modified scheme is proposed in which number of interferometers is reduced.
Le parti in mediazione: strumenti e tecniche. Dall'esperienza pratica alla costruzione di un metodo
Creators: name: Dalla Bont�, Silvana
Publisher: name: Universit� degli Studi di Trento
Year: 2020

description: L?opera approfondisce il tema del ruolo di parti ed avvocati al tavolo di mediazione dalla peculiare angolatura offerta dal Progetto ?Conflict Managers of Tomorrow - Per la gestione consapevole del conflitto?, un progetto di didattica innovativa che la Facolt� di Giurisprudenza dell?Universit� degli Studi di Trento promuove da oramai un decennio. In particolare, il volume raccoglie i contributi, in lingua italiana ed inglese, dei protagonisti del Progetto e si pone quale utile strumento per coloro, studenti e professionisti, che vogliano preparare con accuratezza una sessione di mediazione, nella veste di parte in conflitto e relativo avvocato. Il metodo delineato nel volume nasce dall'esperienza pratica guadagnata dagli Autori nella preparazione di squadre di studenti della Facolt� di Giurisprudenza di Trento che hanno gareggiato in competizioni nazionali ed internazionali di mediazione. Da quella dimensione pratica si � costruito un metodo che guarda a tutti i profili ? da quelli strutturali della mediazione a quelli comunicativi e didattici ? implicati in una sapiente preparazione delle strategie mediative.
Room temperature quantum bit storage exceeding 39 minutes using ionized donors in 28-silicon
Creators: name: Saeedi, Kamyar
name: Simmons, Stephanie
name: Salvail, Jeff Z.
name: Dluhy, Phillip
name: Riemann, Helge
name: Abrosimov, Nikolai V.
name: Becker, Peter
name: Pohl, Hans-Joachim
name: Morton, John J. L.
name: Thewalt, Mike L. W.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Quantum memories capable of storing and retrieving coherent information for extended times at room temperature would enable a host of new technologies. Electron and nuclear spin qubits using shallow neutral donors in semiconductors have been studied extensively but are limited to low temperatures ($\le$10 K); however, the nuclear spins of ionized donors have potential for high temperature operation. We use optical methods and dynamical decoupling to realize this potential for an ensemble of 31P donors in isotopically purified 28Si and observe a room temperature coherence time of over 39 minutes. We further show that a coherent spin superposition can be cycled from 4.2 K to room temperature and back, and report a cryogenic coherence time of 3 hours in the same system.
description: 5 pages, 4 figures
Conformal blocks of W_N Minimal Models and AGT correspondence
Creators: name: Alkalaev, K. B.
name: Belavin, V. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the AGT correspondence between four-dimensional supersymmetric gauge field theory and two-dimensional conformal field theories in the context of W_N minimal models. The origin of the AGT correspondence is in a special integrable structure which appears in the properly extended conformal theory. One of the basic manifestations of this integrability is the special orthogonal basis which arises in the extended theory. We propose modification of the AGT representation for the W_N conformal blocks in the minimal models. The necessary modification is related to the reduction of the orthogonal basis. This leads to the explicit combinatorial representation for the conformal blocks of minimal models and employs the sum over N-tupels of Young diagrams with additional restrictions.
description: 16 pages; v2: typos removed, more comments, references added; v3: minor corrections, references added, JHEP version
Mapping the power-law decay of high-harmonic spectra from laser-plasma interactions
Creators: name: Bhadoria, Shikha
name: Blackburn, Thomas
name: Gonoskov, Arkady
name: Marklund, Mattias
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Visible or near infra-red light can be manipulated to produce bursts of coherent extreme ultraviolet (XUV) or X-rays via the relativistic high-order harmonic generation process when a laser irradiates a solid plasma target. The intensity of the spectral components of the reflected signal decays with increase of harmonic order and the efficiency of this non-linear process largely hinges on how prompt this decay is. This is governed by the conditions of the laser-plasma interaction for which various models have been proposed. At relativistic intensities, a spectrum exhibiting a power-law decay with an exponent of 8/3 or 4/3 is often stated. Here, we analyse the dependence of this exponent on interaction parameters including the angle of incidence, the carrier envelope phase, intensity of the laser and the pre-plasma length, and discuss opportunities for optimization. Our simulations show that, rather than there being one universal exponent, the spectral decay is a continuous function of the laser-plasma interaction parameters.
Inferring the neutron star maximum mass and lower mass gap in neutron star-black hole systems with spin
Creators: name: Ye, Christine
name: Fishbach, Maya
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Gravitational-wave (GW) detections of merging neutron star-black hole (NSBH) systems probe astrophysical neutron star (NS) and black hole (BH) mass distributions, especially at the transition between NS and BH masses. Of particular interest are the maximum NS mass, minimum BH mass, and potential mass gap between them. While previous GW population analyses assumed all NSs obey the same maximum mass, if rapidly spinning NSs exist, they can extend to larger maximum masses than nonspinning NSs. In fact, several authors have proposed that the $\sim2.6\,M_\odot$ object in the event GW190814 -- either the most massive NS or least massive BH observed to date -- is a rapidly spinning NS. We therefore infer the NSBH mass distribution jointly with the NS spin distribution, modeling the NS maximum mass as a function of spin. Using 4 LIGO-Virgo NSBH events including GW190814, if we assume that the NS spin distribution is uniformly distributed up to the maximum (breakup) spin, we infer the maximum non-spinning NS mass is $2.7^{+0.5}_{-0.4}\,M_\odot$ (90\% credibility), while assuming only nonspinning NSs, the NS maximum mass must be $>2.53 M_\odot$ (90\% credibility). The data support the mass gap's existence, with a minimum BH mass at $5.4^{+0.7}_{-1.0} M_\odot$. With future observations, under simplified assumptions, 150 NSBH events may constrain the maximum nonspinning NS mass to $\pm0.02\,M_\odot$, and we may even measure the relation between the NS spin and maximum mass entirely from GW data. If rapidly rotating NSs exist, their spins and masses must be modeled simultaneously to avoid biasing the NS maximum mass.
description: 17 pages, 13 figures. Accepted to ApJ, in press
Injectivity of the Galois map
Creators: name: Pedrotti, Juliana
name: Tamusiunas, Thaísa
Publisher: name: arXiv
Year: 2023
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: Given a Galois extension $R^β \subset R$, where $β$ is an action of a finite groupoid on a noncommutative ring, we present some conditions to the Galois map be injective.
title: Mobiler Reporting-Mechanismus für örtlich verteilte Einsatzkräfte
Creators: name: Ludwig, Thomas
name: Reuter, Christian
name: Pipek, Volkmar
Publisher: name: De Gruyter
Year: 2023

description: Die im Katastrophenschutz beteiligten Behörden und Organisationen mit Sicherheitsaufgaben (BOS) benötigen für Entscheidungen akkurate Informationen. Einige können über externe Dienste in der Leitstelle visualisiert werden, andere müssen von zuständigen Einheiten vor Ort berichtet werden. Unsere Design-Fallstudie untersucht interaktive Unterstützungsmöglichkeiten dieser Reporting-Prozesse. In einer qualitativen empirischen Studie wurden die Kommunikationspraktiken von BOS untersucht und darauf aufbauend ein Konzept zur semi-strukturierten Artikulation von Informationsbedarfen erstellt, welches als mobile Applikation implementiert und mit potentiellen Nutzern evaluiert wurde. Unser Beitrag zeigt, wie zielgerichtete Anfragen das Reporting örtlich verteilter Einsatzkräfte unterstützen können.
Implementation of the Dicke lattice model in hybrid quantum system arrays
Creators: name: Zou, Liujun
name: Marcos, David
name: Diehl, Sebastian
name: Putz, Stefan
name: Schmiedmayer, Jörg
name: Majer, Johannes
name: Rabl, Peter
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Generalized Dicke models can be implemented in hybrid quantum systems built from ensembles of nitrogen-vacancy (NV) centers in diamond coupled to superconducting microwave cavities. By engineering cavity assisted Raman transitions between two spin states of the NV defect, a fully tunable model for collective light-matter interactions in the ultra-strong coupling limit can be obtained. Our analysis of the resulting non-equilibrium phases for a single cavity and for coupled cavity arrays shows that different superradiant phase transitions can be observed using existing experimental technologies, even in the presence of large inhomogeneous broadening of the spin ensemble. The phase diagram of the Dicke lattice model displays distinct features induced by dissipation, which can serve as a genuine experimental signature for phase transitions in driven open quantum systems.
description: 4+1 pages, 3 figures and supplementary material
Instability of rotating black holes: large D analysis
Creators: name: Emparan, Roberto
name: Suzuki, Ryotaku
name: Tanabe, Kentaro
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the stability of odd-dimensional rotating black holes with equal angular momenta by performing an expansion in the inverse of the number of dimensions D. Universality at large $D$ allows us to calculate analytically the complex frequency of quasinormal modes to next-to-leading order in the expansion. We identify the onset of non-axisymmetric, bar-mode instabilities at a specific finite rotation, and axisymmetric instabilities at larger rotation. The former occur at the threshold where the modes become superradiant, and before the ultraspinning regime is reached. Our results fully confirm the picture found in numerical studies, with very good quantitative agreement. We extend the analysis to the same class of black holes in Anti-deSitter space, and find the same qualitative features. We also discuss the appearance at high frequencies of the universal set of (stable) quasinormal modes.
description: 38 pages, 14 figures. v3: NLO results included so the instability is shown to occur before the ultraspinning regime of rotation. Significant improvements in accuracy. Ancillary Mathematica notebook contains details of NLO results
title: Flow Experience in Software Engineering: Development and Evaluation of Design Options for Eclipse
Creators: name: Kaufhold, Marc-André
name: Reuter, Christian
name: Ludwig, Thomas
Publisher: name: Association for Information Systems AIS
Year: 2023

description: In positive psychology, flow is described as a holistic mental condition in which an individual delves into an activity with full concentration. Even in software engineering, the promotion of flow experience fosters effects such as positive affect, improved learning, and higher product loyalty in computer-aided environments. However, from a practice-based perspective it is not obvious how to design ICT to support flow experience. With this paper, we, therefore, contribute concrete design implications, paving the way for a good flow experience in ICT. This paper begins by examining the current state of flow research in the field of Human-Computer Interaction. We then go on to present a study comprising the development and evaluation of design options that aim to support flow in integrated development environments such as Eclipse, one of the most prominent open-source IDEs. The findings reveal practical implications on the use of four flow design options for software engineering and are integrated into a preliminary research framework.
title: Sicherheitsarena - Ein Ansatz zur Verbesserung des Krisenmanagements durch Kooperation und Vernetzung
Creators: name: Pipek, Volkmar
name: Reuter, Christian
name: Ley, Benedikt
name: Ludwig, Thomas
name: Wiedenhöfer, Torben
Publisher: name: Beta Verlag & Marketinggesellschaft mbH
Year: 2023

description: Die organisationübergreifende Vernetzung von Feuerwehr, Polizei, Hilfsorganisationen, dem THW, der öffentlichen Verwaltung und Infrastrukturbetreibern, wie beispielsweise Stromnetzbetreibern, ist vor allem bei großen Schadenslagen unabdingbar. Ziel des Forschungsprojekts „Info-Strom“ (www.infostrom.org), welches vom Bundesministerium für Bildung und Forschung seit 2010 und bis Ende 2013 gefördert wird (Fö.-Kz. 13N10712), ist die Entwicklung von Konzepten sowie Software, um diese Zusammenarbeit zu unterstützten und letztlich zu verbessern. Die entstandene Software wird derzeit in zwei Kreisen in NRW, dem Kreis SiegenWittgenstein und dem Rhein Erft Kreis, getestet und evaluiert.