cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Detecting chaos in particle accelerators through the frequency map analysis method
Creators: name: Papaphilippou, Yannis
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The motion of beams in particle accelerators is dominated by a plethora of non-linear effects which can enhance chaotic motion and limit their performance. The application of advanced non-linear dynamics methods for detecting and correcting these effects and thereby increasing the region of beam stability plays an essential role during the accelerator design phase but also their operation. After describing the nature of non-linear effects and their impact on performance parameters of different particle accelerator categories, the theory of non-linear particle motion is outlined. The recent developments on the methods employed for the analysis of chaotic beam motion are detailed. In particular, the ability of the frequency map analysis method to detect chaotic motion and guide the correction of non-linear effects is demonstrated in particle tracking simulations but also experimental data.
description: Submitted for publication in Chaos, Focus Issue: Chaos Detection Methods and Predictability
Investigations of strong cosmic censorship in 3-dimensional black strings
Creators: name: Ho, Jeongwon
name: Kim, Wontae
name: Lee, Bum-Hoon
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Investigating the quasinormal modes of a massive scalar field on the 3-dimensional black string (3dBS), we study the strong cosmic censorship (SCC) conjecture for the 3dBS in the T-dual relationship with the 3-dimensional rotating anti-de-Sitter (BTZ) black hole. It is shown that even though geometries of the two spacetimes are quite different, such as asymptotically AdS for the BTZ black hole and asymptotically flat for the 3dBS, the BTZ black hole and the 3dBS share similar properties for the SCC. Concretely speaking, the SCC conjecture can be violated even for asymptotically flat spacetime, i.e. the 3dBS. These observations lead us to an assumption that the T-dual transformation preserves spacetime symmetries, at least, which are relevant to the SCC. In addition, we find a new feature of the quasinormal mode at the Cauchy horizon: in the case of the 3dBS, the spectral gap, $α_{\mathrm{BS}}$ at the Cauchy horizon is not determined by the `$ω$-frequency mode', but the `m-frequency mode'.
description: 22 pages, 2 figures, Added some references. Corrected typos
Global linear stability analysis of a flame anchored to a cylinder
Creators: name: Wang, Chuhan
name: Lesshafft, Lutz
name: Oberleithner, Kilian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: This study investigates the linear stability of a laminar premixed flame, anchored on a square cylinder and confined inside a channel. Many modern linear analysis concepts have been developed and validated around non-reacting bluff-body wake flows, and the objective of this paper is to explore whether those tools can be applied with the same success to the study of reacting flows in similar configurations. It is found that linear instability analysis of steady reacting flow states accurately predicts critical flow parameters for the onset of limit-cycle oscillations, when compared to direct numerical simulation performed with a simple one-step reaction scheme in the low Mach number limit. Furthermore, the linear analysis predicts a strong stabilising effect of flame ignition, consistent with documented experiments and numerical simulations. Instability in ignited wake flows is, however, found to set in at sufficiently high Reynolds number, and a linear wavemaker analysis characterises this instability as being driven by hydrodynamic mechanisms of a similar nature as in non-reacting wake flows. The frequency of nonlinear limit-cycle flame oscillations in this unstable regime is retrieved accurately by linear eigenmode analysis performed on the time-averaged mean flow, under the condition that the full set of the reacting flow equations is linearised. If, on the contrary, unsteadiness in the density and in the reaction rate are excluded from the linear model, then the congruence between linear and nonlinear dynamics is lost.
Mapping single electron spins with magnetic tomography
Creators: name: Yudilevich, Dan
name: Stöhr, Rainer
name: Denisenko, Andrej
name: Finkler, Amit
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Mapping the positions of single electron spins is a highly desired capability for applications such as nanoscale magnetic resonance imaging and quantum network characterization. Here, we demonstrate a method based on rotating an external magnetic field to identify the precise location of single electron spins in the vicinity of a quantum spin sensor. We use a nitrogen-vacancy center in diamond as a quantum sensor and modulate the dipolar coupling to a proximate electron spin in the crystal by varying the magnetic field vector. The modulation of the dipolar coupling contains information on the coordinates of the spin, from which we extract its position with an uncertainty of 0.9\,Å. We show that the method can be used to locate electron spins with nanometer precision up to 10\,nm away from the sensor. We discuss the method's applicability to mapping hyperfine coupled electron spins, and show it may be applied to locating nitroxide radicals. The magnetic tomography method can be utilized for distance measurements for studying the structure of individual molecules.
Sonnenfleckenzeichnung Nr. 163.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 20.07.2011, 06:30, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2011

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 2.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
A Prospective Screening of HLA-B*57.01 Allelic Variant for Preventing the Hypersensivity Reaction to Abacavir: Experience from the Laboratory of Molecular Biology of the Infectious Diseases Division at the University Hospital of Salerno
Creators: name: (:Unkn) Unknown
Publisher: name: Universita' degli Studi di Salerno
Year: 2015
Subjects: Abacavir
HIV
HLA-B*57.01
Hypersensitivity reaction
Real-Time PCR

description: Abacavir is a nucleoside reverse transcriptase inhibitor largely used as part of the antiretroviral therapy in Human Immunodeficiency Virus (HIV)-infected patients. Some individuals (2-9%) who start an abacavir treatment show an immunologic reaction indicated as hypersensitivity reaction syndrome (HSR) that is often responsible for therapy discontinuation and could represent a life-threatening event. Some studies demonstrated a correlation between this adverse reaction and the class I of the major histocompatibility complex (MHC) allele, HLA-B*57.01, in several populations, including Caucasians. Nowadays, International HIV treatment guidelines recommend the HLA-B*57.01 genotyping before abacavir administration to reduce the incidence of HSR. Both male and female HIV-infected patients were enrolled at the Infectious Diseases Division at the University Hospital of Salerno, and admitted to a prospective HLA-B*57.01 screening. Genetic analysis was carried out through two sequential Real-Time PCR reactions in which Sybr-Green was used. Out of 248 patients, 215 were Italians from Southern Italy and 33 were coming from several non-EU members countries. All were genotyped: 6 Italians (2.8%) and 1 of the non-EU group (3%) were identified as HLA-B*57.01 carriers. In this paper we present our experience in the field of abacavir pharmacogenetic and confirm the importance of Real Time PCR as a valid and cost-effective HLA-B*57.01 typing methodology.
Aqueous self-assembly of a wide range of sophorolipid and glucolipid microbial bioamphiphiles (biosurfactants): considerations on the structure-properties relationship
Creators: name: Baccile, Niki
name: Poirier, Alexandre
name: Griel, Patrick Le
name: Pernot, Petra
name: Pala, Melike
name: Roelants, Sophie
name: Soetaert, Wim
name: Stevens, Christian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Sophorolipids are well-known scaled-up microbial glycolipid biosurfactants with a strong potential for commercialization due to their biological origin and mildness in contact with the skin and the environment compared to classical surfactants. However, their association properties in water are still poorly understood, they cannot be predicted and their behavior in solution challenges half a century of knowledge generated in the field of surfactant science. By studying forty different types of sophorolipids and sophorosides in water using small angle X-ray scattering, and optical and cryogenic transmission electron microscopy, this work provides better understanding of their structure-property relationship and identifies which chemical groups in their molecular structure have a critical influence on their self-assembly properties. Structural features like the number of sugar headgroups, acetylation, end-chain functional group, (un)saturation, lactonization and length of chain are adjusted to both rationalize their impact and understand their effect on self-assembly. The number of sugar groups, pH, (un)saturation and lactonization were found to have a critical impact on sophorolipid self-assembly. The chemical nature of the end-chain functional group and chain length were also found to have a possibly critical impact, depending on the specific type of chemical function (COOH and long chains are critical). Mono- and diacetylation, as well as the position of sophorose in the fatty acid ($ω$, $ω$-1), are not critical, i.e., they did not significantly influence sophorolipid self-assembly.
A new implementation of the geometric method for solving the Eady slice equations
Creators: name: Egan, Charlie P.
name: Bourne, David P.
name: Cotter, Colin J.
name: Cullen, Mike J. P.
name: Pelloni, Beatrice
name: Roper, Steven M.
name: Wilkinson, Mark
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We present a new implementation of the geometric method of Cullen & Purser (1984) for solving the semi-geostrophic Eady slice equations which model large scale atmospheric flows and frontogenesis. The geometric method is a Lagrangian discretisation, where the PDE is approximated by a particle system. An important property of the discretisation is that it is energy conserving. We restate the geometric method in the language of semi-discrete optimal transport theory and exploit this to develop a fast implementation that combines the latest results from numerical optimal transport theory with a novel adaptive time-stepping scheme. Our results enable a controlled comparison between the Eady-Boussinesq vertical slice equations and their semi-geostrophic approximation. We provide further evidence that weak solutions of the Eady-Boussinesq vertical slice equations converge to weak solutions of the semi-geostrophic Eady slice equations as the Rossby number tends to zero.
description: 43 pages, 9 figures
Against European Hegemony Discourse. Vladimir Putin and Other Voices in the Post-2012 Russia
Creators: name: Khumaryan, Vahe
Publisher: name: Universita' degli Studi di Salerno
Year: 2019
Subjects: Russia
Putin
European-Russian relations
Corruption

description: The reborn anti-corruption related mass protests in Russia in early 2017 once again bring up questions about the political reaction to the previous oppositional awakening of 2011. The nature of the political regime in Russia throughout the 2012-2017 had important normative agenda, which deeply affected European-Russian relations on their intergovernmental level, but also on the identity policies and discourse in the Russian domestic affairs. In this article an overview of the discourses under Vladimir Putin's post-2012 presidential term is given. It is also suggested, that the current corruption-related upraising may have less to do with the mainstream government support rate, than it appears.
Sonnenfleckenzeichnung Nr. 255.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 11.11.2011, 09:15, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2011

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 78.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 13.04.2011, 08:30, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2011

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 2.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 231.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 05.10.2011, 08:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2011

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
A Review on Reducing Complexity of Binary Search Algorithm (Extended Abstract)
Creators: name: Rashedul Arefin Ifty
name: Irfan, Afif Hossain
name: MD Ismail
Publisher: name: Zenodo
Year: 2022

description: Extender abstract about reducing complexity of binary search algorithm. Successfully presented at IEEE CS BDC Summer Symposium 2022 held on 10-11 June 2022. Recognition: https://drive.google.com/file/d/1peWDwyhfEDapJdX6G0joTWjwBvwPILIH/view
Two-stage magneto-optical trapping and narrow-line cooling of $^6$Li atoms to high phase-space density
Creators: name: Sebastian, Jimmy
name: Gross, Christian
name: Li, Ke
name: Gan, Huat Chai Jaren
name: Li, Wenhui
name: Dieckmann, Kai
Publisher: name: arXiv
Year: 2014
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We report an experimental study of peak and phase-space density of a two-stage magneto-optical trap (MOT) of 6-Li atoms, which exploits the narrower $2S_{1/2}\rightarrow 3P_{3/2}$ ultra-violet (UV) transition at 323 nm following trapping and cooling on the more common D2 transition at 671 nm. The UV MOT is loaded from a red MOT and is compressed to give a high phase-space density up to $3\times 10^{-4}$. Temperatures as low as 33 $μ$K are achieved on the UV transition. We study the density limiting factors and in particular find a value for the light-assisted collisional loss coefficient of $1.3 \pm0.4\times10^{-10}\,\textrm{cm}^3/\textrm{s}$ for low repumping intensity.
description: 4 pages, 5 figures
Sonnenfleckenzeichnung Nr. 28.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 08.02.2011, 09:30, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2011

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Single-layer MoS2 roughness and sliding friction quenching by interaction with atomically flat substrates
Creators: name: Quereda, Jorge
name: Castellanos-Gomez, Andres
name: Agraït, Nicolás
name: Rubio-Bollinger, Gabino
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We experimentally study the surface roughness and the lateral friction force in single-layer MoS2 crystals deposited on different substrates: SiO2, mica and hexagonal boron nitride (h-BN). Roughness and sliding friction measurements are performed by atomic force microscopy (AFM). We find a strong dependence of the MoS2 roughness on the underlying substrate material, being h-BN the substrate which better preserves the flatness of the MoS2 crystal. The lateral friction also lowers as the roughness decreases, and attains its lowest value for MoS2 flakes on h-BN substrates. However, it is still higher than for the surface of a bulk MoS2 crystal, which we attribute to the deformation of the flake due to competing tip-to-flake and flake-to-substrate interactions.
description: 10 pages, 4 figures
Feedback-assisted quantum search by continuous-time quantum walks
Creators: name: Candeloro, Alessandro
name: Benedetti, Claudia
name: Genoni, Marco G.
name: Paris, Matteo G. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We address the quantum search of a target node on a cycle graph by means of a quantum walk assisted by continuous measurement and feedback. Unlike previous spatial search approaches, where the oracle is described as a projector on the target state, we instead consider a dynamical oracle implemented through a feedback Hamiltonian. In particular, our protocol is able to drive the walker to a desired target node. The idea is based on continuously monitoring the position of the quantum walker on the graph and then to apply a unitary feedback operation based on the information obtained from measurement. The feedback changes the couplings between the nodes and it is optimized at each time via a numerical procedure. We numerically simulate the stochastic trajectories describing the evolution for graphs of dimensions up to $N=15$, and quantify the performance of the protocol via the average fidelity between the state of the walker and the target node. We discuss different constraints on the control strategy, in particular on the possible values that the feedback couplings can take. We find that for unbounded controls, the protocol is able to quickly localize the walker on the target node. We then discuss how the performance is lowered by posing an upper bound on the control couplings, but still allowing to stabilize the walker in the desired node. Finally, we show how a digital feedback protocol, where the couplings can take values only from a discrete set, seems in general as efficient as the continuous bounded one.
description: Final version accepted for publication on Advanced Quantum Technologies. 18 pages, 12 figures
DC Quantum Magnetometry Below the Ramsey Limit
Creators: name: Wood, Alexander A.
name: Stacey, Alastair
name: Martin, Andy M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate quantum sensing of dc magnetic fields that exceeds the sensitivity of conventional $T_2^\ast$-limited dc magnetometry by more than an order of magnitude. We used nitrogen-vacancy centers in a diamond rotating at periods comparable to the spin coherence time, and characterize the dependence of magnetic sensitivity on measurement time and rotation speed. Our method up-converts only the dc field of interest and preserves the quantum coherence of the sensor. These results definitively improve the sensitivity of a quantum magnetometer to dc fields, an important and useful addition to the quantum sensing toolbox.
description: 5pgs main text, 10 pgs supplementary
Sonnenfleckenzeichnung Nr. 51.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 11.03.2011, 08:30, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2011

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Anisotropic tomography of heavy quark dissociation by using general propagator structure at finite magnetic field
Creators: name: Ghosh, Ritesh
name: Bandyopadhyay, Aritra
name: Nilima, Indrani
name: Ghosh, Sabyasachi
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this work we have explored the imaginary part of the Heavy Quark (HQ) potential and subsequently the dissociation of heavy quarkonia at finite temperature and magnetic field. With respect to earlier investigations on this topic, present work contain three new ingredients. First one is considering all Landau level summation, for which present work can be applicable in entire magnetic field domain - from weak to strong. Second one is the general structure of the gauge boson propagator in a hot magnetized medium, which is used here in heavy quark potential problem first time. Third one is a rich anisotropic structure of the complex heavy quark potential, which explicitly depends on the longitudinal and transverse distance. By comparing with earlier references, we have attempted to display our new contributions by plotting heavy quark potential tomography and dissociation probability at finite temperature and magnetic field.
description: 27 pages, 9 figures
Sonnenfleckenzeichnung Nr. 122.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 29.05.2011, 09:00, erstellt von Andrea Manna
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2011

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 2.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Topological Electromagnetic Effects and Higher Second Chern Numbers in Four-Dimensional Gapped Phases
Creators: name: Zhu, Yan-Qing
name: Zheng, Zhen
name: Palumbo, Giandomenico
name: Wang, Z. D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Higher-dimensional topological phases play a key role in understanding the lower-dimensional topological phases and the related topological responses through a dimensional reduction procedure. In this work, we present a Dirac-type model of four-dimensional (4D) $\mathbb{Z}_2$ topological insulator (TI) protected by $\mathcal{CP}$-symmetry, whose 3D boundary supports an odd number of Dirac cones. A specific perturbation splits each bulk massive Dirac cone into two valleys separated in energy-momentum space with opposite second Chern numbers, in which the 3D boundary modes become a nodal sphere or a Weyl semimetallic phase. By introducing the electromagnetic (EM) and pseudo-EM fields, exotic topological responses of our 4D system are revealed, which are found to be described by the (4+1)D mixed Chern-Simons theories in the low-energy regime. Notably, several topological phase transitions occur from a $\mathcal{CP}$-broken $\mathbb{Z}_2$ TI to a $\mathbb{Z}$ TI when the bulk gap closes by giving rise to exotic double-nodal-line/nodal-hyper-torus gapless phases. Finally, we propose to probe experimentally these topological effects in cold atoms.
description: Some typos have been corrected, and the relevant references have been added
Cochlear-bone wave can yield a hearing sensation as well as otoacoustic emission
Creators: name: Tchumatchenko, T.
name: Reichenbach, T.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences

description: A hearing sensation arises when the elastic basilar membrane inside the cochlea vibrates. The basilar membrane is typically set into motion through airborne sound that displaces the middle ear and induces a pressure difference across the membrane. A second, alternative pathway exists, however: stimulation of the cochlear bone vibrates the basilar membrane as well. This pathway, referred to as bone conduction, is increasingly used in the construction of headphones that bypass the ear canal and the middle ear. Furthermore, otoacoustic emissions, sounds generated inside the ear and measured in the ear canal, may not involve the usual wave on the basilar membrane, suggesting that additional cochlear structures are involved in their propagation. Here we describe a novel propagation mode that emerges through deformation of the cochlear bone. Through a mathematical and computational approach we demonstrate that this wave can explain bone conduction as well as numerous properties of otoacoustic emissions.
description: 37 pages, 4 figures, Nature Communications 2014
Role of nonclassical temporal correlation in powering quantum random access codes
Creators: name: Bera, Subhankar
name: Maity, Ananda G.
name: Mal, Shiladitya
name: Majumdar, A. S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We explore the fundamental origin of the quantum advantage behind random access code. We propose new temporal inequalities compatible with noninvasive-realist models and show that any non-zero quantum advantage of n bits encoded to 1-bit random access code in the presence of shared randomness is equivalent to the violation of the corresponding temporal inequality. As an immediate consequence of this connection, we also prove that the maximal success probability of n bits encoded to 1-bit random access code can be obtained when the maximal violation of the corresponding inequality is achieved. We then show that any non-zero quantum advantage of n bits encoded to 1-bit random access code, or in other words, any non-zero violation of the corresponding temporal inequality can certify genuine randomness.
description: 14 pages, 3 figures
Essays on Human Capital, Long Run Growth and Comparative Development
Creators: name: Carillo, Mario Francesco
Publisher: name: Universita degli studi di Salerno
Year: 2014
Subjects: subject: SECS-P/01 ECONOMIA POLITICA
subject: Human capital
subject: Comparative development
subject: Economic growth

description: 2011 - 2012
description: Questo lavoro avanza l’ipotesi secondo la quale differenze tra paesi nella distribuzione del capitale umano, mediante l’effetto sull’adozione della tecnologia, implicò differenze nel timing della transizione da stagnazione Malthusiana a crescita moderna ed è pertanto causa delle persistenti differenze nei redditi pro-capite che si osservano oggi. Il grado di polarizzazione della distribuzione del capitale umano si traduce in un trade-off tra innovazione ed adozione della tecnologia che, a sua volta, determina la transizione da stagnazione a crescita. Nonostante il contributo della coda alta della distribuzione del capitale umano all’innovazione tecnologica, l’assenza di una componente della forza lavoro sufficientemente istruita da avere la possibilità di adottare le nuove tecnologie disponibili causò un ritardo nella transizione da stagnazione a crescita. [a cura dell'Autore]
description: This research argues that di erences in the distribution of human capital across countries and their impact on the advancement and the adoption of technology contributed to the di erential timing of the transition from the Malthusian stagnation to modern growth and the persistent di erences in income per capita across the globe. Polarization in the distribution of hu- man capital within an economy implied a trade-o between innovation and adoption of technologies that, in turn, in uenced the transition from stag- nation to growth. Despite the contribution of the upper tail of the human capital distribution to technological innovation, the absence of wide group of educated individuals among the working population delayed technology adoption and the transition from stagnation to growth. [edited by Author]
ADDiff: Semantic Differencing for Activity Diagrams
Creators: name: Maoz, Shahar
name: Ringert, Jan Oliver
name: Rumpe, Bernhard
Publisher: name: arXiv
Year: 2014
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Activity diagrams (ADs) have recently become widely used in the modeling of workflows, business processes, and web-services, where they serve various purposes, from documentation, requirement definitions, and test case specifications, to simulation and code generation. As models, programs, and systems evolve over time, understanding changes and their impact is an important challenge, which has attracted much research efforts in recent years. In this paper we present addiff, a semantic differencing operator for ADs. Unlike most existing approaches to model comparison, which compare the concrete or the abstract syntax of two given diagrams and output a list of syntactical changes or edit operations, addiff considers the Semantics of the diagrams at hand and outputs a set of diff witnesses, each of which is an execution trace that is possible in the first AD and is not possible in the second. We motivate the use of addiff, formally define it, and show two algorithms to compute it, a concrete forward-search algorithm and a symbolic xpoint algorithm, implemented using BDDs and integrated into the Eclipse IDE. Empirical results and examples demonstrate the feasibility and unique contribution of addiff to the state-of-the-art in version comparison and evolution analysis.
description: 11 pages, 9 figures
Ophiocordyceps ramosissimum T. C. Wen, J. C. Kang & K. D. Hyde 2014, sp. nov.
Creators: name: Wen, Ting-Chi
name: Xiao, Yuan-Pin
name: Li, Wen-Jing
name: Kang, Ji-Chuan
name: Hyde, Kevin D.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Sordariomycetes
Hypocreales
Ophiocordycipitaceae
Ophiocordyceps
Ophiocordyceps ramosissimum

description: Ophiocordyceps ramosissimum T.C. Wen, J.C. Kang & K.D. Hyde, sp. nov. (Fig. 2) MycoBank MB 807656.
Differs from related Ophiocordyceps species mainly by its branch-like stromata, without a sterile apex, very wide asci and ascospores and by its occurrence on Phassus nodus in living roots or trunks of Clerodendrum cyrtophyllum.
Type: — CHINA. Hunan Province: Dongkou County, Xuefeng Mountains, on Phassus nodus in root of living Clerodendrum cyrtophyllum, 8 October 2011, Ru-Cai Zhu HN4 (MFLU12-2165, holotype!).
Stromata 70–150 mm long, 2–4 mm wide, cylindrical, 1–2 arising mainly from the head of host; living on larvae of Phassus nodus (Hepialidae) in the trunk or upper roots near the soil of Clerodendrum cyrtophyllum (Verbenaceae). Stipe light grey and smooth. Fertile part 40–70 mm long × 1–3 mm diam., cylindrical, yellow-brown, branching repeatedly with 12–25 branches, apices of branches covered with sparse, superficial ascomata. Cells of stromata thin-walled, globose, brown. Host 60–100 mm long, 6–10 mm wide, black-brown, with white endosclerotia. Ascomata 340–350 × 225–255 µm (x = 346 × 243, n = 10), superficial, ovoid, with a basal stipe connected to the stromata. Peridium 37–88 µm wide (x = 57, n = 10), comprising two layers; hamathecium of paraphyses. Paraphyses branched, septate, 1.9–3 µm wide (x = 2.5, n = 10). Asci 170–265 × 6.9–17.3 µm (x = 234.8 × 11.9, n = 10), 8-spored, cylindrical. Ascospores 130–245× 2–3.5 µm (x = 207.7 × 2.7, n = 10), fasciculate, thread-like, slender and long, with many septa, not breaking into secondary ascospores. Asexual state unknown.
Etymology: —Refers to its appearance similar to tree branches.
Distribution: — Hunan Province, China.
Host: —On larvae of Phassus nodus Chu & Wang, living in the trunk of Clerodendrum cyrtophyllum Turcz.
Other material studied (paratypes): — CHINA. Hunan Province: Dongkou County, Xuefeng Mountains, on Phassus nodus in trunk of living Clerodendrum cyrtophyllum, 8 October 2011, Ru-Cai Zhu HN8 (GZUHHN8!); ibid., 20 October 20 12, R u-C ai Z h u 20 12H N2 (GZ U H20 12HN2!); ibid., Ru -Cai Zhu 201 2HN10 (GZUH2012HN10!); ibid., Ru-Cai Zhu 2012HN12 (GZUH2012HN12!).
description: Published as part of Wen, Ting-Chi, Xiao, Yuan-Pin, Li, Wen-Jing, Kang, Ji-Chuan & Hyde, Kevin D., 2014, Systematic analyses of Ophiocordyceps ramosissimum sp. nov., a new species from a larvae of Hepialidae in China, pp. 227-234 in Phytotaxa 161 (3) on pages 231-232, DOI: 10.11646/phytotaxa.161.3.6, http://zenodo.org/record/5131848
Sonnenfleckenzeichnung Nr. 43.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 01.03.2011, 09:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2011

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Finite-size scaling analysis of the two-dimensional random transverse-field Ising ferromagnet
Creators: name: Choi, Jiwon
name: Baek, Seung Ki
Publisher: name: arXiv
Year: 2023
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The random transverse-field Ising ferromagnet (RTFIF) is a highly disordered quantum system which contains randomness in the coupling strengths as well as in the transverse-field strengths. In one dimension, the critical properties are governed by an infinite-randomness fixed point (IRFP), and renormalization-group studies argue that the two-dimensional (2D) model is also governed by an IRFP. However, even the location of the critical point remains unsettled among quantum Monte Carlo (QMC) studies. In this work, we perform extensive QMC simulations to locate the quantum critical point and attempt a finite-size scaling analysis to observe the critical behavior. We estimate the critical field strength of the 2D RTFIF as $Γ_c = 7.52(2)$, together with critical exponents such as $β=1.5(3)$, $ν= 1.6(3)$, and $z=3.3(3)$ or $ψ=0.50(3)$. We have also considered the McCoy-Wu model, which has randomness in the ferromagnetic coupling strengths but not in the transverse-field strength. Our QMC calculation shows that the critical behavior of the 2D McCoy-Wu model is closer to that of the 2D transverse-field Ising spin glass than to that of the 2D RTFIF. These numerical findings enhance our understanding of disordered 2D quantum systems.
The MOSES project: enhancing short sea shipping with automated technologies
Creators: name: De Juan Muñoyerro, Mercedes
Publisher: name: Zenodo
Year: 2022

description: 28th International Conference on Urban and Maritime Transport and the Environment is the merging of two successful events organised by the Wessex Institute, the International Conference on Urban Transport and the Environment which started in Southampton in 1995 and the International Conference on Maritime Transport which originated in Rome, Italy in 2019. This year the conference took place on 19–21 September 2022. The ongoing political and military crisis in Ukraine, and feedback from potential participants led the organisers to conclude that the time is still not yet right to hold their conferences in person, as they had hoped, and they have therefore decided that the best interests of their delegates would be served by keep holding their conferences in virtual format. The substantial growth of maritime shipping has resulted in large transported quantities around the world, creating a demand for innovative solutions for ports and fleets, well reflected by the success of the First International Conference on Maritime Transport, held in 2019. These two apparently parallel topics meet in the transport and environmental management of coastal cities, both being affected positively and negatively by landside and seaside traffic. The continuing requirement for better urban transport systems and the need for a healthier environment creates a fertile environment for original ideas, innovative approaches and applications of advanced technologies, their tests and evaluations in practice. Moreover, there is a growing need for integration with IT systems and applications to improve safety and efficiency. Maritime Transport is highly interconnected with rail, road and air services, as well as inland waterways. Each of these must therefore operate complimentary of one another to maximise efficiency and respond rapidly to variable economic and political contingencies. The variety of topics covered by the conference reflects the complex interaction of the transport systems with their environment and the need to establish integrated strategies. The aim is to arrive at optimal socio-economic solutions while reducing the negative environmental impacts of transportation systems typically by interdisciplinary approaches. Therefore, the conference focused on multidisciplinary research and development, as well as operational experiences. MOSES was represented by VPF partners, Mrs. Mercedes De Juan Muñoyerro, who submitted and presented a paper entitled: “The MOSES project: enhancing short sea shipping with automated technologies”. Here you can find her presentation to the Conference.
Sonnenfleckenzeichnung Nr. 209.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 10.09.2011, 15:15, erstellt von Andrea Manna
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2011

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 279.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 08.12.2011, 10:45, erstellt von Andrea Manna
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2011

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 2.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Modal Object Diagrams
Creators: name: Maoz, Shahar
name: Ringert, Jan Oliver
name: Rumpe, Bernhard
Publisher: name: arXiv
Year: 2014
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: While object diagrams (ODs) are widely used as a means to document object-oriented systems, they are expressively weak, as they are limited to describe specific possible snapshots of the system at hand. In this paper we introduce modal object diagrams (MODs), which extend the classical OD language with positive/negative and example/invariant modalities. The extended language allows the designer to specify not only positive example models but also negative examples, ones that the system should not allow, positive invariants, ones that all system's snapshots should include, and negative invariants, ones that no system snapshot is allowed to include. Moreover, as a primary application of the extended language we provide a formal verification technique that decides whether a given class diagram satisfies (i.e., models) a multi-modal object diagrams specification. In case of a negative answer, the technique outputs relevant counterexample object models, as applicable. The verification is based on a reduction to Alloy. The ideas are implemented in a prototype Eclipse plug-in. Examples show the usefulness of the extended language in specifying structural requirements of object-oriented systems in an intuitive yet expressive way.
description: 25 pages, 9 figures
Anomalous Kinetics of a Multi-Species Reaction-Diffusion System: Effect of Random Velocity Fluctuations
Creators: name: Hnatič, Michal
name: Kecer, Matej
name: Lučivjanský, Tomáš
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Reaction-diffusion systems, which consist of the reacting particles subject to diffusion process, constitute one of the common examples of non-linear statistical systems. In low space dimensions $d \leq 2$ the usual description by means of kinetic rate equations is not sufficient and the effect of density fluctuations has to be properly taken into account. Our aim here is to analyze a particular multi-species reaction-diffusion system characterized by reactions $\textit{A} +\textit{A} \rightarrow (\emptyset, A),$ $\textit{A} +\textit{B} \rightarrow \textit{A}$ at and below its critical dimension $d_c = 2$. In particular, we investigate effect of thermal fluctuations on the reaction kinetics, which are generated by means of random velocity field modelled by a stochastic Navier-Stokes equations. Main theoretical tool employed is field-theoretic perturbative renormalization group. The analysis is performed to the first order of the perturbation scheme (one-loop approximation).
description: Some misprints in text and notation have been fixed compared to the original version
title: Αυτονομία εκπαιδευτικών σε σχολικές μονάδες επαγγελματικής εκπαίδευσης
titleType: AlternativeTitle
Creators: name: Μαράτος, Αναστάσιος
Publisher: name: University of Thessaly
Year: 2014
Subjects: subject: ΕΚΠΑΙΔΕΥΤΙΚΟΙ -- ΣΤΑΣΕΙΣ
subject: ΤΕΧΝΙΚΗ ΕΚΠΑΙΔΕΥΣΗ
subject: ΕΚΠΑΙΔΕΥΣΗ ΕΝΗΛΙΚΩΝ

description: Σημείωση: διατίθεται συμπληρωματικό υλικό σε ξεχωριστό αρχείο.
Sonnenfleckenzeichnung Nr. 99.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 05.05.2011, 08:00, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2011

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)