cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Theoretical and practical aspects of the design and production of synthetic holograms for transmission electron microscopy
Creators: name: Rosi, Paolo
name: Venturi, Federico
name: Medici, Giacomo
name: Menozzi, Claudia
name: Gazzadi, Gian Carlo
name: Rotunno, Enzo
name: Frabboni, Stefano
name: Balboni, Roberto
name: Rezaee, Mohammadreza
name: Tavabi, Amir H.
name: Dunin-Borkowski, Rafal E.
name: Karimi, Ebrahim
name: Grillo, Vincenzo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Beam shaping - the ability to engineer the phase and the amplitude of massive and massless particles - has long interested scientists working on communication, imaging and the foundations of quantum mechanics. In light optics, the shaping of electromagnetic waves (photons) can be achieved using techniques that include, but are not limited to, direct manipulation of the beam source (as in X-ray Free Electron Lasers (XFELs) and Synchrotrons), deformable mirrors, spatial light modulators, mode converters and holograms. The recent introduction of holographic masks for electrons provides new possibilities for electron beam shaping. Their fabrication has been made possible by advances in micrometric and nanometric device production using lithography and focused ion beam patterning. This article provides a tutorial on the generation, production and analysis of synthetic holograms for transmission electron microscopy. It begins with an introduction to synthetic holograms, outlining why they are useful for beam shaping to study material properties. It then focuses on the fabrication of the required devices from theoretical and experimental perspectives, with examples taken from both simulations and experimental results. Applications of synthetic electron holograms as aberration correctors, electron vortex generators and spatial mode sorters are then presented.
Formal Verification of Symbolic Bug Finders
Creators: name: Correnson, Arthur
Publisher: name: CISPA
Year: 2024

description: Testing the robustness of software systems is a fundamental concern. To do so, a common approach is to rely on automated testing methods to search for bugs and potential errors before deploying systems. To be reliable, a testing tool needs to be precise and exhaustive: it should not report false alarms, and not miss too many bugs. In this thesis, we use the Coq proof assistant to implement and prove the correctness of an automated bug finder based on symbolic execution. More precisely, we prove that our bug finder is precise (it cannot report false alarms) and relatively exhaustive (it will enumerate all bugs) against the formal semantics of a target programming language.
A light pseudoscalar in a model with lepton family symmetry O(2)
Creators: name: Grimus, W.
name: Lavoura, L.
name: Neubauer, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss a realization of the non-abelian group O(2) as a family symmetry for the lepton sector. The reflection contained in O(2) acts as a mu-tau interchange symmetry, enforcing--at tree level--maximal atmospheric neutrino mixing and a vanishing mixing angle theta_13. The small ratio m_mu/m_tau (muon over tau mass) gives rise to a suppression factor in the mass of one of the pseudoscalars of the model. We argue that such a light pseudoscalar does not violate any experimental constraint.
description: 20 pages, 2 figures; two footnotes and one reference added, final version for JHEP
Sentipensar la corporeidad de las emociones
Creators: name: Castro Lemus, Nuria
Publisher: name: Zenodo
Year: 2024
Subjects: emociones
Expresión Corporal
Sentipensar
Sentir
pensar
Trabajo coreográfico
corporalidad
corporeidad

description: Comunicación completa disponible en https://youtu.be/phV0pNjsFpY

Abstract de Congreso en FORO INTERNACIONAL SOBRE EVALUACIÓN DE LA CALIDAD DE LA INVESTIGACIÓN Y LA EDUCACIÓN SUPERIOR (FECIES, 2021)

 

Cita: Castro-Lemus, N. (2021). Sentipensar la corporeidad de las emociones. En Palomares, J.M. (comp.) Avances en educación superior e investigación. Volumen I. Dykinson. (pág. 54).
Magnetic frustration and paramagnetic state transport anomalies in Ho4RhAl and Er4RhAl: Possible test cases for newly identified roles of itinerant electrons
Creators: name: Kumar, Ram
name: Sampathkumaran, E. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report the results of magnetic, heat-capacity, electrical and magnetoresistance measurements on Ho4RhAl and Er4RhAl, characterized by 3 sites for rare-earths (R). Antiferromagnetic ordering sets in at (T_N =) about 8.8 and 4.0 K respectively. While Ho compound appears to enter into a complex spin-glass phase at T less thanT_N (at nearly 5 K), spin-glass component appears to set in essentially almost at T_N for the Er case. The loss of the spin-disorder contribution in the magnetically ordered state is not pronounced, mimicking that in Gd2PdSi3, a compound which now attracts interest in the area of topological Hall effect and magnetic skyrmions, indicating complex Fermi surface. There is a minimum in the temperature dependence of electrical resistivity in the case of only Ho above T_N, but significant negative magnetoresistance is observed over a wide temperature range in the paramagnetic state increasing with decreasing temperature for both the cases. This finding establishes that these compounds belong to a select group of intermetallics in which spin-disorder contribution apparently increases gradually as one approaches respective TN with decreasing temperature. This could be an experimental signature for the effect due to classical spin-liquid above T_N. In view of these properties analogous to those of Gd2PdSi3, it is of interest to investigate these 4:1:1 compounds further to understand possible unconventional roles of itinerant electrons, not only in the magnetically ordered state but also in the paramagnetic state, predicted by some theories in recent years for which this Gd compound is considered to be a classic example.Besides, magnetoresistance and isothermal entropy change (magnetocaloric effect) track each other.
description: 15 pages, 9 figures
Ultraluminous X-ray Sources and Their Nebulae
Creators: name: Abolmasov, Pavel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: One of the interesting features of Ultraluminous X-ray sources is that many of them are surrounded by luminous nebulae exhibiting diverse observational properties. In different cases the nebulae are photoionized or shock-powered. Generally, the two energy sources appear to coexist. ULX bubble nebulae may be considered a new class of shock-powered nebulae similar to upscaled versions of stellar wind bubbles. Their expansion rates support constant energy influx rather than single powerful events like Hypernova explosions.
description: 6 pages, 1 figure, to appear in the proceedings of "Cool discs, hot flows: The Varying Faces of Accreting Compact Objects", Funasdalen, Sweden, 2008, ed. M. Axelsson (New York: AIP)
Some applications of Choquet’s integral representation theorem to probability
Creators: name: Padayachee, Krishna
Publisher: name: University of British Columbia
Year: 2010

description: In this thesis we look at the applications of Choquet's integral representation to probability theory. Applications of Choquet's theorem are given to obtain a representation of superharmonic functions on the Martin Boundary, a representation theorem for invariant measures with respect to a family of transformations T and finally to symmetric measures on a product space. In order to obtain the desired representation theorem in the above mentioned/applications we need to consider an appropriate topology on the spaces. In the case of the Martin boundary our underlying space is R[sup ∞] equipped with the product topology. The set of all superharmonic functions is shown to be a compact convex metrizable subset of R[sup ∞]. Furthermore the extreme points are isolated and they turn out to be the minimal harmonic functions. With regards to the other two applications we consider the space of measures on an appropriate topological space. The probability measures invariant with respect to a family of transformations T form a Compact convex set in the weak-star topology and the extreme points are the ergodic measures. In the case of the symmetric measures on the product space the symmetric probability measures form a compact convex set in the weak-star topology and the extreme points are the product probability measures.
Initial Reports of the Deep Sea Drilling Project - Volume 38
Creators: name: Talwani, M.
name: Udintsev, G.
name: The Leg 38 Science Party
Publisher: name: U.S. Government Printing Office
Year: 1976
Subjects: Deep Sea Drilling Project
Glomar Challenger
DSDP
Leg 38
Site 336
Site 337
Site 338
Site 339
Site 340
Site 341
Site 342
Site 343
Site 344
Site 345
Site 346
Site 347
Site 348
Site 349
Site 350
Site 351
Site 352
Norwegian-Greenland Sea

description: This volume covers Leg 38 of the cruises of the Drilling Vessel Glomar Challenger. Leg 38 of the Deep Sea Drilling Project started on 29 July, 1974 at Dublin, Ireland, and ended 58 days later at Amsterdam, The Netherlands, on 26 September 1974. Glomar Challenger traveled 4285.8 nmi and drilled a total of 17 holes at 17 sites in the Norwegian-Greenland Sea. Because of its position between the North Atlantic and the Arctic oceans, its young age, small size, and diversity of geological structures, the Norwegian-Greenland Sea provided a unique target for deep drilling on Leg 38 of the Glomar Challenger. From studies of the sediments and basement rocks it was expected to gain insight particularly as to the following: 1) The tectonic framework and evolution of this area with special emphasis on the continental margins and on questions concerned with shifts of spreading axis and existence of foundered continental areas. 2) The youngest times of existence of land bridges between Eurasia and North America and the effect these land bridges had on water circulation and paleoclimates. 3) The date of the initiation of glaciation and dates of glacial advances and retreats. 4) Description of the Tertiary marine microfauna and microflora of the Norwegian-Greenland Sea, which are essentially unknown at present, and investigation of their similarity with microfauna and microflora from other areas.
Review of Indirect Methods Used to Determine the $^1S_0$ Neutron-Neutron Scattering Length
Creators: name: Howell, C. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We have determined a value for the $^1S_0$ neutron-neutron scattering length ($a_{nn}$) from high-precision measurements of time-of-flight spectra of neutrons from the $^2H(π^-,n γ)n$ capture reaction. The measurements were done at the Los Alamos Meson Physics Facility by the E1286 collaboration. The high spatial resolution of our gamma-ray detector enabled us to make a detailed assessment of the systematic uncertainties in our techniques. The value obtained in the present work is $a_{nn} = -18$.63 $\pm $0.10 (statistical) $\pm$ 0.44 (systematic) $\pm$ 0.30 (theoretical) fm. This result is consistent with previous determinations of $a_{nn}$ from the $π^-d$ capture reaction. We found that the analysis of the data with calculations that use a relativistic phase-space factor gives a more negative value for $a_{nn}$ by 0.33 fm over the analysis done using a nonrelativistic phase-space factor. Combining the present result with the previous ones from $π^-d$ capture gives: $a_{nn} = - 18$.63 $\pm$ 0.27 (expt) $\pm$ 0.30 fm (theory). For the first time the combined statistical and systematic experimental uncertainty in $a_{nn}$ is smaller than the theoretical uncertainty and comparable to the uncertainty in the proton-proton $^1S_0$ scattering length ($a_{pp}$). This average value of $a_{nn}$ when corrected for the magnetic-moment interaction of the two neutrons becomes -18.9 $\pm$ 0.4 fm which is 1.6 $\pm$ 0.5 fm different from the recommended value of $a_{pp}$, thereby confirming charge symmetry breaking at the 1% confidence level.
description: 8 pages, 1 figure and 3 tables
Exploring the Solar Wind from its Source on the Corona into the Inner Heliosphere during the First Solar Orbiter - Parker Solar Probe Quadrature
Creators: name: Telloni, Daniele
name: Andretta, Vincenzo
name: Antonucci, Ester
name: Bemporad, Alessandro
name: Capuano, Giuseppe E.
name: Fineschi, Silvano
name: Giordano, Silvio
name: Habbal, Shadia
name: Perrone, Denise
name: Pinto, Rui F.
name: Sorriso-Valvo, Luca
name: Spadaro, Daniele
name: Susino, Roberto
name: Woodham, Lloyd D.
name: Zank, Gary P.
name: Romoli, Marco
name: Bale, Stuart D.
name: Kasper, Justin C.
name: Auchère, Frédéric
name: Bruno, Roberto
name: Capobianco, Gerardo
name: Case, Anthony W.
name: Casini, Chiara
name: Casti, Marta
name: Chioetto, Paolo
name: Corso, Alain J.
name: Da Deppo, Vania
name: De Leo, Yara
name: de Wit, Thierry Dudok
name: Frassati, Federica
name: Frassetto, Fabio
name: Goetz, Keith
name: Guglielmino, Salvo L.
name: Harvey, Peter R.
name: Heinzel, Petr
name: Jerse, Giovanna
name: Korreck, Kelly E.
name: Landini, Federico
name: Larson, Davin
name: Liberatore, Alessandro
name: Livi, Roberto
name: MacDowall, Robert J.
name: Magli, Enrico
name: Malaspina, David M.
name: Massone, Giuseppe
name: Messerotti, Mauro
name: Moses, John D.
name: Naletto, Giampiero
name: Nicolini, Gianalfredo
name: Nisticò, Giuseppe
name: Panasenco, Olga
name: Pancrazzi, Maurizio
name: Pelizzo, Maria G.
name: Pulupa, Marc
name: Reale, Fabio
name: Romano, Paolo
name: Sasso, Clementina
name: Schühle, Udo
name: Stangalini, Marco
name: Stevens, Michael L.
name: Strachan, Leonard
name: Straus, Thomas
name: Teriaca, Luca
name: Uslenghi, Michela
name: Velli, Marco
name: Verscharen, Daniel
name: Volpicelli, Cosimo A.
name: Whittlesey, Phyllis
name: Zangrilli, Luca
name: Zimbardo, Gaetano
name: Zuppella, Paola
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: This Letter addresses the first Solar Orbiter (SO) -- Parker Solar Probe (PSP) quadrature, occurring on January 18, 2021, to investigate the evolution of solar wind from the extended corona to the inner heliosphere. Assuming ballistic propagation, the same plasma volume observed remotely in corona at altitudes between 3.5 and 6.3 solar radii above the solar limb with the Metis coronagraph on SO can be tracked to PSP, orbiting at 0.1 au, thus allowing the local properties of the solar wind to be linked to the coronal source region from where it originated. Thanks to the close approach of PSP to the Sun and the simultaneous Metis observation of the solar corona, the flow-aligned magnetic field and the bulk kinetic energy flux density can be empirically inferred along the coronal current sheet with an unprecedented accuracy, allowing in particular estimation of the Alfvén radius at 8.7 solar radii during the time of this event. This is thus the very first study of the same solar wind plasma as it expands from the sub-Alfvénic solar corona to just above the Alfvén surface.
description: 10 pages, 4 figures
Testing quantum theory with thought experiments
Creators: name: Nurgalieva, Nuriya
name: Renner, Renato
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum mechanics is one of our most successful physical theories; its predictions agree with experimental observations to an extremely high accuracy. However, the bare formalism of quantum theory does not provide straightforward answers to seemingly simple questions: for example, how should one model systems that include agents who are themselves using quantum theory? These foundational questions may be investigated with a theorist's tool -- the thought experiment. Its purpose is to turn debates about the interpretation of quantum theory into actual physics questions. In this article, we give a state-of-the-art overview on quantum thought experiments involving observers, from the basic Wigner's friend to the recent Frauchiger-Renner setup, clarifying their interpretational significance and responding to objections and criticism on the way.
description: 30 pages
Placing direct limits on the mass of earth-bound dark matter
Creators: name: Adler, Stephen L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We point out that by comparing the total mass (in gravitational units) of the earth-moon system, as determined by lunar laser ranging, with the sum of the lunar mass as independently determined by its gravitational action on satellites or asteroids, and the earth mass, as determined by the LAGEOS geodetic survey satellite, one can get a direct measure of the mass of earth-bound dark matter lying between the radius of the moon's orbit and the geodetic satellite orbit. Current data show that the mass of such earth-bound dark matter must be less than $4 \times 10^{-9}$ of the earth's mass.
description: Latex, 5 pages; v2 has Added Note, v4 has added references and footnotes
Fundamental Wireless Performance of a Building
Creators: name: Zhang, Jiliang
name: Glazunov, Andrés Alayón
name: Yang, Wenfei
name: Zhang, Jie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Over 80% of wireless traffic already takes place in buildings. Like water, gas, and electricity, wireless communication is becoming one of the most fundamental utilities of a building. It is well known that building structures have a significant impact on in-building wireless networks. If we seek to achieve the optimal network performance indoors, the buildings should be designed with the objective of maximizing wireless performance. So far, wireless performance has not yet been considered when designing a building. In this paper, we introduce a novel and interdisciplinary concept of building wireless performance (BWP) to a wide audience in both wireless communications and building design, emphasizing its broad impacts on wireless network development and deployment, and on building layout/material design. We first give an overview of the BWP evaluation framework proposed in our state-of-the-art works and explain their interconnections. Then, we outline the potential research directions in this exciting research area to encourage further interdisciplinary research.
description: Accepted at IEEE Wireless Communications
Energetic Particle Acceleration in Compressible Magnetohydrodynamic Turbulence
Creators: name: Zhang, Jianfu
name: Xiang, Fuyuan
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Magnetohydrodynamic (MHD) turbulence is an important agent of energetic particle acceleration. Focusing on the compressible properties of magnetic turbulence, we adopt test particle method to study the particle acceleration from Alfvén, slow and fast modes in four turbulence regimes that may appear in a realistic astrophysical environment. Our studies show that (1) the second-order Fermi mechanism drives the acceleration of particles in the cascade processes of three modes by particle-turbulence interactions, regardless of whether the shock wave appears; (2) not only can the power spectra of maximum acceleration rates reveal the inertial range of compressible turbulence, but also recover the scaling and energy ratio relationship between the modes; (3) fast mode dominates the acceleration of particles, especially in the case of super-Alfvénic and supersonic turbulence, slow mode dominates the acceleration for sub-Alfvénic turbulence in the very high energy range, and the acceleration of Alfvén mode is significant at the early stage of the acceleration; (4) particle acceleration from three modes results in a power-law distribution in the certain range of evolution time. From the perspective of particle-wave mode interaction, this paper promotes the understanding for both the properties of turbulence and the behavior of particle acceleration, which will help insight into astrophysical processes involved in MHD turbulence.
description: 10 pages, 5 Figures. Accepted by ApJ
Differentiator for Noisy Sampled Signals with Best Worst-Case Accuracy
Creators: name: Haimovich, Hernan
name: Seeber, Richard
name: Aldana-López, Rodrigo
name: Gómez-Gutiérrez, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper proposes a differentiator for sampled signals with bounded noise and bounded second derivative. It is based on a linear program derived from the available sample information and requires no further tuning beyond the noise and derivative bounds. A tight bound on the worst-case accuracy, i.e., the worst-case differentiation error, is derived, which is the best among all causal differentiators and is moreover shown to be obtained after a fixed number of sampling steps. Comparisons with the accuracy of existing high-gain and sliding-mode differentiators illustrate the obtained results.
description: Please cite the publisher's version. For the publisher's version and full citation details see: https://doi.org/10.1109/LCSYS.2021.3087542
Cosmological bounce from a deformed Heisenberg algebra
Creators: name: Battisti, Marco Valerio
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The implications of a deformed Heisenberg algebra on the Friedmann-Robertson-Walker cosmological models are investigated. We consider the Snyder non-commutative space in which the translation group is undeformed and the rotational invariance preserved. When this framework is implemented to one-dimensional systems (which is this case) the modifications are uniquely fixed up to a sign. A cosmological quantum bounce à la loop quantum cosmology is then obtained. We also get the Randall-Sundrum braneworld scenario and this way a Snyder-deformed quantum cosmology can be considered as a common phenomenological description for both theories.
description: 10 pages; version improved, title changed, to appear in PRD
Reservoir optics with exciton-polariton condensates
Creators: name: Wang, Y.
name: Sigurdsson, H.
name: Töpfer, J. D.
name: Lagoudakis, P. G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate an all-optical microscale planar lensing technique based on coherent fluids of semiconductor cavity exciton-polariton condensates. Our theoretical analysis underpins the potential in using state-of-the-art spatial light modulation of nonresonant excitation beams to guide and focus polariton condensates away from their pumping region. The nonresonant excitation profile generates an excitonic reservoir that blueshifts the polariton mode and provides gain, which can be spatially tailored into lens shapes at the microscale to refract condensate waves. We propose several different avenues in controlling the condensate fluid, and demonstrate formation of highly enhanced and localised condensates away from the pumped reservoirs. This opens new perspectives in guiding quantum fluids of light and generating polariton condensates that are shielded from detrimental reservoir dephasing effects.
description: 12 pages, 8 figures
Mechanisms Underlying Delayed loss of HBeAg and HBV DNA Following HBsAg Seroclearance in PEG-IFNα Treated Patients of chronic hepatitis B
Creators: name: Jiang, Bei
name: Guan, Guiwen
name: Zhao, Kaitao
name: Gu, Zhiqiang
name: Wang, Lin
name: Gu, Weilin
name: Li, Minghui
name: Xia, Yuchen
name: Chen, Xiangmei
name: Guo, Yifei
name: Zhang, Jiming
name: Cao, Zhenhuan
name: Yuen, Man-fung
name: Lu, Fengmin
Publisher: name: Taylor & Francis
Year: 2025
Subjects: subject: Space Science
subject: Medicine
subject: Science Policy
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences

description: A notable proportion of CHB patients undergoing PEG-IFNα based therapy experience lagged serum HBeAg and/or HBV DNA disappearance in patients achieving HBsAg loss. In this study, we explored the molecular mechanisms behind this clinical phenomenon, offering novel insights into the sustainability of chronic HBV infection. Two independent clinical cohorts were enrolled to validate this phenomenon. Then comprehensive analysis was performed using public datasets, coupled with a series of molecular biology experiments. Approximately 17-20% CHB patients underwent PEG-IFNα based therapy experienced seroclearance of HBsAg, while serum HBeAg and/or HBV DNA remained positive. These patients are more prone to serum HBsAg reappearance compared to those achieving complete virological response. Analysis of public datasets revealed that compared to the PC/BCP, the SP1/SP2 promoter displayed more pronounced inhibitory epigenetic modifications in HBeAg-negative patients and SP1/SP2 in-frame mutation peaked in immune active patients. In vitro experiments demonstrated that introduced SP1/SP2 inactive mutations would enhance PC/BCP transcriptional activity by a mechanism known as adjacent transcriptional interference. Furthermore, the deletion of L-HBsAg facilitated intracellular cccDNA replenishment. This study elucidates that under IFNα treatment and low viral load, transcriptional suppression of SP1/SP2 promoters through mutations and/or epigenetic changes would favor the maintenance of sustain chronic HBV infection, via enhancing the transcription activity of BCP to promote cccDNA replenishment.
Search for the highly suppressed decays B- -> K+ pi- pi- and B- -> K- K- pi+
Creators: name: The BABAR Collaboration
name: Aubert, B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report a search for the decays B- -> K+ pi- pi- and B- -> K- K- pi+, which are highly suppressed in the Standard Model. Using a sample of (467 +/- 5) x 10^6 BBbar pairs collected with the BaBar detector, we do not see any evidence of these decays and determine 90% confidence level upper limits of BF(B- -> K+ pi- pi-) < 9.5 x 10^-7 and BF(B- -> K- K- pi+) < 1.6 x 10^-7 on the corresponding branching fractions, including systematic uncertainties.
description: 8 pages, 3 postscript figures, 1 table, published in Physical Review D (Rapid Communications). Updates in v2 are minor changes to the text and Fig. 1 following interaction with journal referees and editors
title: Assessment of economic losses caused by streptothricosis in Nigeria
title: The assessment of economic losses caused by streptothricosis in Nigeria
titleType: AlternativeTitle
Creators: name: Abdullahi, Usman Sheikh
Publisher: name: The University of Edinburgh
Year: 1982
Subjects: subject: Annexe MSc Digitisation Project 2022 Block 47
subject: Streptothricosis
subject: Economic losses
subject: Livestock
subject: Nigeria
subject: Control measures

description: The literature referring to the economic losses resulting from infection with Streptothricosis is reviewed. Except for the incidence of 10.5%, 2% case mortality and 4% culling rates determined for cattle, the incidence of the disease among other livestock such as sheep, goats, horses and donkeys has not been adequately determined for the whole country. There appears to be a marked variation in the reported estimates of losses due to the disease in livestock trade. For hides and skins in 1 976» estimates of losses ranged from N1.6 million to N10.33 million. Losses due to progressive debility, loss in milk yield and fertility and the extent of control measures have not been adequately determined. It is suggested that investigations be carried out to determine more accurately, the extent of these losses both on short term and long term bases. Proposals are put forward to improve the acquisition of knowledge on prevalence; measurement of economic losses, pathogenicity of the disease, the efficacy and cost of control.
On the strong coupling expansion in the su(1|1) sector of N=4 SYM
Creators: name: Beccaria, Matteo
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the anomalous dimension of the fermionic highest states Tr(psi^L) in the su(1|1) sector of N=4 SYM at strong coupling. In the thermodynamical L->OO limit it is described by a BES-like integral equation recently proposed by Rej, Staudacher and Zieme. The strong coupling regime of this equation is analyzed numerically and analytically by Neumann expansion methods which have been developed for the sl(2) sector. We compute analytically the first two terms of the strong coupling expansion and present numerical results for the next correction. We illustrate various specific features valid for the su(1|1) sector. In particular, at next-to-leading order, we find and solve a singular integral equation describing the scaling continuum limit of the Neumann coefficients.
description: 34 pages, 11 eps figures. v2: new references added
Supplementary document for Ptychographic characterization of spatiotemporal wavepackets - 7422365.pdf
Creators: name: Liu, Yuanyuan
name: Xu, Yingming
name: jia, Zhang Nian
name: Liu, Dawei
name: Wei, Lijin
name: Cao, Qian
name: Shi, Junhui
name: Zhan, Qiwen
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Optical Physics not elsewhere classified

description: Supplemental Document
Resonant electronic states and I-V curves of Fe/MgO/Fe(100) tunnel junctions
Creators: name: Rungger, Ivan
name: Mryasov, Oleg N.
name: Sanvito, Stefano
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The bias dependence of the tunnel magnetoresistance (TMR) of Fe/MgO/Fe tunnel junctions is investigated theoretically with a fully self-consistent scheme that combines the non-equilibrium Green's functions method with density functional theory. At voltages smaller than 20 mVolt the I-V characteristics and the TMR are dominated by resonant transport through narrow interface states in the minority spin-band. In the parallel configuration this contribution is quenched by a voltage comparable to the energy width of the interface state, whereas it persists at all voltages in the anti-parallel configuration. At higher bias the transport is mainly determined by the relative positions of the $Δ_1$ band-edges in the two Fe electrodes, which causes a decrease of the TMR.
การตรวจการผ่าเหล่าของยีน FOXG1 ในผู้ป่วยเด็กไทยที่เป็นโรคลมชักชนิดดื้อต่อการรักษาที่มีอาการตั้งต้นในวัยทารก (Mutation Screening of the  FOXG1  Gene in Patients with Cryptogenic Infantile Intractable
Epilepsy)
Creators: name: ธัญญา ศรีโพธิ์
Publisher: name: Genetics Society of Thailand
Year: 2013
Subjects: epilepsy, FOXG1, mutations

description: S1 (Special Issue 1), S.1, Thai Journal of Genetics
การประเมินสมรรถภาพการเจริญเติบโตในกุ้งกุลาดำที่ผสมตามธรรมชาติจากข้อมูลความสัมพันธ์ ทางโมเลกุล (Evaluation of Growth Performance in Black Tiger Shrimp (Penaeus monodon) from Natural Mating
with Molecular Relatedness)
Creators: name: โอปอล์ สิวะสุธรรม
Publisher: name: Genetics Society of Thailand
Year: 2013
Subjects: growth performance, Penaeus monodon, natural mating, molecular relatedness

description: S1 (Special Issue 1), S.1, Thai Journal of Genetics
Efficiency and agility of a liquid CO2 cooling system for molten metal systems
Creators: name: Glück, Jakob
name: Schilling, Andreas
name: Schwenke, Niklas
name: Fros, Adam
name: Fehlbier, Martin
Publisher: name: Universität Kassel
Year: 2021
Subjects: subject: CO2 cooling
subject: Magnesium
subject: Hot runner
subject: Thermal seal
subject: Simulation
subject: Cooling rates
subject: 600
subject: Kühlsystem
subject: Kohlendioxid
subject: Versiegelung

description: Gefördert durch den Publikationsfonds der Universität Kassel
An optimized application-context relocation approach for Connected and Automated Mobility (CAM)
Creators: name: Slamnik-Kriještorac, Nina
name: Latré, Steven
name: Marquez-Barja, Johann M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In this paper, we study and present a management and orchestration framework for vehicular communications, which enables service continuity for the vehicle via an optimized application-context relocation approach. To optimize the transfer of the application-context for Connected and Automated Mobility (CAM) services, our MEC orchestrator performs prediction of resource availability in the edge infrastructure based on the Long Short-Term Memory (LSTM) model, and it makes a final decision on relocation by calculating the outcome of a Multi-Criteria Decision-Making (MCDM) algorithm, taking into account the i) resource prediction, ii) latency and bandwidth on the communication links, and iii) geographical locations of the vehicle and edge hosts in the network infrastructure. Furthermore, we have built a proof-of-concept for the orchestration framework in a real-life distributed testbed environment, to showcase the efficiency in optimizing the edge host selection and application context relocation towards achieving continuity of a service that informs vehicle about the driving conditions on the road.
Percolative properties of hard oblate ellipsoids of revolution with a soft shell
Creators: name: Ambrosetti, Gianluca
name: Johner, Niklaus
name: Grimaldi, Claudio
name: Danani, Andrea
name: Ryser, Peter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present an in-depth analysis of the geometrical percolation behavior in the continuum of random assemblies of hard oblate ellipsoids of revolution. Simulations where carried out by considering a broad range of aspect-ratios, from spheres up to aspect-ratio 100 plate-like objects, and with various limiting two particle interaction distances, from 0.05 times the major axis up to 4.0 times the major axis. We confirm the widely reported trend of a consistent lowering of the hard particle critical volume fraction with the increase of the aspect-ratio. Moreover, assimilating the limiting interaction distance to a shell of constant thickness surrounding the ellipsoids, we propose a simple relation based on the total excluded volume of these objects which allows to estimate the critical concentration from a quantity which is quasi-invariant over a large spectrum of limiting interaction distances. Excluded volume and volume quantities are derived explicitly.
description: 11 pages, 8 figures
Five-body resonances in $^8$He and $^8$C using the complex scaling method
Creators: name: Myo, Takayuki
name: Odsuren, Myagmarjav
name: Katō, Kiyoshi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study many-body resonances in the neuron-rich $^8$He and the mirror proton-rich $^8$C using the $^4$He+$N$+$N$+$N$+$N$ five-body model with the isospin $T=2$ system. Resonances are described with the complex energy eigenvalues as the Gamow states using the complex scaling method. In $^8$He, we obtain five states, in which four states are resonances, and in $^8$C all five states are resonances.We discuss the isospin-symmetry breaking dynamically induced by the Coulomb interaction in the energy spectra and decay widths of the resonances in two mirror nuclei. We predict the resonance energies and decay widths for the future experiments. We also investigate the configurations of valence nucleons above $^4$He in two nuclei with the $jj$ coupling scheme and all the states dominantly have the $p$-shell configurations. From the configuration mixing, $^8$He and $^8$C give the similar results, which indicates the good symmetry in two nuclei.
description: 7 pages, 5 figures
Dimensional reduction in quantum optics
Creators: name: Ströhle, Jannik
name: Lopp, Richard
Publisher: name: Universität Ulm
Year: 2024
Subjects: subject: Cavity quantum electrodynamics
subject: Lasers
subject: Light-matter interaction
subject: Lower-dimensional field theories
subject: Quantum optics
subject: Cavity methods
subject: DDC 530 / Physics

description: One-dimensional quantum optical models usually rest on the intuition of large-scale separation or frozen dynamics associated with the different spatial dimensions, for example when studying quasi one-dimensional atomic dynamics, potentially resulting in the violation of (3+1)-dimensional Maxwell's theory. Here, we provide a rigorous foundation for this approximation by means of the light-matter interaction. We show how the quantized electromagnetic field can be decomposed—exactly—into an infinite number of subfields living on a lower-dimensional subspace and containing the entirety of the spectrum when studying axially symmetric setups, such as with an optical fiber, a laser beam, or a waveguide. The dimensional reduction approximation then corresponds to a truncation in the number of such subfields that in turn, when considering the interaction with for instance an atom, corresponds to a modification to the atomic spatial profile. We explore under what conditions the standard approach is justified and when corrections are necessary in order to account for the dynamics due to the neglected spatial dimensions. In particular we examine what role vacuum fluctuations and structured laser modes play in the validity of the approximation.
Tumera: Tutor of Photography Beginners
Creators: name: Wu, Xiaoran
name: Jia, Jia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: With the popularity of photographic equipment, more and more people are starting to learn photography by themselves. Although they have easy access to photographic materials, it is uneasy to obtain professional feedback or guidance that can help them improve their photography skills. Therefore, we develop an intelligently interactive system, Tumera, that provides aesthetics guidance for photography beginners. When shooting, Tumera gives timely feedback on the pictures in the view port. After shooting, scores evaluating the aesthetic quality of different aspects of the photos and corresponding improvement suggestions are given. Tumera allows users to share, rank, discuss, and learn from their works and interaction with the system based on the scores and suggestions. In the experiment, Tumera showed good accuracy, real-time computing ability, and effective guiding performance.
The Nekrasov Conjecture for Toric Surfaces
Creators: name: Gasparim, Elizabeth
name: Liu, Chiu-Chu Melissa
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The Nekrasov conjecture predicts a relation between the partition function for N=2 supersymmetric Yang-Mills theory and the Seiberg-Witten prepotential. For instantons on R^4, the conjecture was proved, independently and using different methods, by Nekrasov-Okounkov, Nakajima-Yoshioka, and Braverman-Etingof. We prove a generalized version of the conjecture for instantons on noncompact toric surfaces.
description: 38 pages; typos corrected, references added, minor changes (e.g. minor change of convention in Definition 5.13, 5.19, 6.5)
The Eastwood-Singer gauge in Einstein spaces
Creators: name: Esposito, Giampiero
name: Roychowdhury, Raju
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Electrodynamics in curved spacetime can be studied in the Eastwood--Singer gauge, which has the advantage of respecting the invariance under conformal rescalings of the Maxwell equations. Such a construction is here studied in Einstein spaces, for which the Ricci tensor is proportional to the metric. The classical field equations for the potential are then equivalent to first solving a scalar wave equation with cosmological constant, and then solving a vector wave equation where the inhomogeneous term is obtained from the gradient of the solution of the scalar wave equation. The Eastwood--Singer condition leads to a field equation on the potential which is preserved under gauge transformations provided that the scalar function therein obeys a fourth-order equation where the highest-order term is the wave operator composed with itself. The second-order scalar equation is here solved in de Sitter spacetime, and also the fourth-order equation in a particular case, and these solutions are found to admit an exponential decay at large time provided that square-integrability for positive time is required. Last, the vector wave equation in the Eastwood-Singer gauge is solved explicitly when the potential is taken to depend only on the time variable.
description: 13 pages. Section 6, with new original calculations, has been added, and the presentation has been improved
Critical Analysis of TESS Transit Photometric Data: Improved Physical Properties for Five Exoplanets
Creators: name: Saha, Suman
name: Sengupta, Sujan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present improved physical parameters for four hot Jupiters: KELT-7 b, HAT-P-14 b, WASP-29 b, WASP-95 b, and a hot Neptune: WASP-156 b, by performing critical and rigorous analysis of the time-series observations from the Transiting Exoplanet Survey Satellite (TESS). Being a space-based telescope, the transit photometric data obtained by TESS are free from any noise component due to the interference of Earth's atmosphere. In our analysis of the observed data, we have used critical noise reduction techniques, e.g., the wavelet denoising and Gaussian process regression, in order to effectively reduce the noise components that arise from other sources, such as various instrumental effects and the stellar activity and pulsations. The better quality of photometric data from TESS, combined with our state-of-the-art noise reduction and analysis technique, has resulted into more accurate and precise values of the physical properties for the target exoplanets than that reported in earlier works.
description: 19 pages, 6 figures, Accepted for publication in The Astronomical Journal
HeFDI Data Infosnack: Was sind Data Stewards? Eine Einführung basierend auf dem GesundFDM Data Steward Konzept
Creators: name: Koch, Katharina
name: La Sala, Beate Ulrike
name: Werner, Stephanie
Publisher: name: Zenodo
Year: 2025
Subjects: HeFDI
HeFDI Data Infosnacks
Love Data Week
Forschungsdatenmanagement
Forschungsdaten
Data Steward
Data Stewardship
GesundFDM
research data management
research data

description: In diesem Infosnack sollen Aufgaben, Funktionen und Rollen von Data Stewards thematisiert werden. Im zweiten Teil der Präsentation soll das GesundFDM Data Steward Konzept und seine praktische Umsetzung im Fokus stehen.
Nonlocal Modulation of Entangled Photons
Creators: name: Harris, S. E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider ramifications of the use of high speed light modulators to questions of correlation and measurement of time-energy entangled photons. Using phase modulators, we find that temporal modulation of one photon of an entangled pair, as measured by correlation in the frequency domain, may be negated or enhanced by modulation of the second photon. Using amplitude modulators we describe a Fourier technique for measurement of biphoton wave functions with slow detectors.
Notes on toric Sasaki-Einstein seven-manifolds and AdS_4/CFT_3
Creators: name: Martelli, Dario
name: Sparks, James
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the geometry and topology of two infinite families Y^{p,k} of Sasaki-Einstein seven-manifolds, that are expected to be AdS_4/CFT_3 dual to families of N=2 superconformal field theories in three dimensions. These manifolds, labelled by two positive integers p and k, are Lens space bundles S^3/Z_p over CP^2 and CP^1 x CP^1, respectively. The corresponding Calabi-Yau cones are toric. We present their toric diagrams and gauged linear sigma model charges in terms of p and k, and find that the Y^{p,k} manifolds interpolate between certain orbifolds of the homogeneous spaces S^7, M^{3,2} and Q^{1,1,1}.
description: 31 pages, 6 toric figures; v2: minor changes
Grating-Induced Slow-Light Enhancement of Second Harmonic Generation in Periodically Poled Crystals
Creators: name: Maybour, Thomas E.
name: Smith, Devin H.
name: Horak, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The effect of slow light on second harmonic generation in a periodically poled $χ^{(2)}$ nonlinear medium is investigated theoretically. A linear $π$ phase shifted grating is used to slow the group velocity of the fundamental frequency and the resulting field enhancement greatly increases the second harmonic conversion efficiency. A second linear grating at the input end ensures that all output is in the forward direction. We show that almost 100\% conversion efficiency can be achieved for continuous wave pumping at low intensities that generate negligible conversion in the absence of the slow-light grating.
description: 8 pages, 17 figures
A Second Pandemic? Analysis of Fake News About COVID-19 Vaccines in Qatar
Creators: name: Nakov, Preslav
name: Alam, Firoj
name: Shaar, Shaden
name: Martino, Giovanni Da San
name: Zhang, Yifan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences
subject: F.2.2; I.2.7
subject: 68T50

description: While COVID-19 vaccines are finally becoming widely available, a second pandemic that revolves around the circulation of anti-vaxxer fake news may hinder efforts to recover from the first one. With this in mind, we performed an extensive analysis of Arabic and English tweets about COVID-19 vaccines, with focus on messages originating from Qatar. We found that Arabic tweets contain a lot of false information and rumors, while English tweets are mostly factual. However, English tweets are much more propagandistic than Arabic ones. In terms of propaganda techniques, about half of the Arabic tweets express doubt, and 1/5 use loaded language, while English tweets are abundant in loaded language, exaggeration, fear, name-calling, doubt, and flag-waving. Finally, in terms of framing, Arabic tweets adopt a health and safety perspective, while in English economic concerns dominate.
description: COVID-19, disinformation, misinformation, factuality, fact-checking, fact-checkers, check-worthiness, framing, harmfulness, social media platforms, social media