cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multiple Triple-Point Fermions in Heusler Compounds
Creators: name: Barik, Ranjan Kumar
name: Shinde, Ravindra
name: Singh, Abhishek K.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using the density functional theoretical calculations, we report a new set of topological semimetals X$_{2}$YZ (X = \{Cu, Rh, Pd, Ag, Au, Hg\}, Y = \{Li, Na, Sc, Zn, Y, Zr, Hf, La, Pr, Pm, Sm, Tb, Dy, Ho, Tm\} and Z =\{Mg, Al, Zn, Ga, Y, Ag, Cd, In, Sn, Ta, Sm\}), which show the existence of multiple topological triple point fermions along four independent $C_{3}$ axes. These fermionic quasiparticles have no analogues elementary particle in the standard model. The angle-resolved photoemission spectroscopy is simulated to obtain the exotic topological surface states and the characteristic Fermi arcs. The inclusion of spin-orbit coupling splits the triple-point into two Dirac points. The triple-point fermions are exhibited on the easily cleavable (111) surface and are well separated from the surface $\barΓ$ point, allowing them to be resolved in the surface spectroscopic techniques. This intermediate linearly dispersive degeneracy between Weyl and Dirac points may offer prospective candidates for quantum transport applications.
Comparative analysis of file transfer protocols in low-bandwidth radionetworks
Creators: name: Strelkovskaya, Irina
name: Zolotukhin, Roman
name: Strelkovskaya, Julia
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2021
Subjects: subject: 004

description: The use of modern digital ultra and very high frequency (UHF/VHF) radio stations in the construction of digital governmental automated control systems (ACS) of the low echelon management level has led to the creation of protocols and standards that allow data transmission in low-bandwidth communication networks. However, none of these standards provide recommendations for file transfer in communication networks facing low speed, long delay and high probability of data loss. This work investigates QoS parameters and performs comparative analysis of FTP, TFTP, SCP, SFTP, ETFTP protocols for file transfer in low-bandwidth communication networks based on UHF/VHF radio stations. A model of two Harris RF-7850M-HH radio stations connected by an attenuator and coaxial cables was used to measure the QoS parameters. The characteristics including the bandwidth, jitter and average time of data transmission depending on the operating modes of radio stations and the level of attenuation in the radio communication channel have been obtained. The time of file transfer and the actual size of the transmitted data when using these protocols was measured. The recommendations for use of file transfer protocols in radio communication channels depending on the operating mode of the radio station are given. The obtained results allow to rationally choosing the mechanism and algorithm of file transfer when building governmental ACS of the low echelon management level based on low-bandwidth communication networks to increase the efficiency of bandwidth use in radio networks.
CP violation and the H-A lineshape
Creators: name: Bernabeu, J.
name: Binosi, D.
name: Papavassiliou, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In two-Higgs doublet models (and particularly in the MSSM) the CP-even (H) and CP-odd (A) neutral scalars are nearly degenerate in mass, and their s-channel production would lead to nearly overlapping resonances. CP-violating effects may connect these two Higgs bosons, giving origin to one-loop particle mixing, which, due to their mass proximity, can be resonantly enhanced, altering their lineshape significantly. We show that, in general, the effect of such a CP-violating mixing cannot be mimicked by (or be re-absorbed into) a simple redefinition of the H and A masses in the context of a CP-conserving model. Specifically, the effects of the CP-mixing are such that, either the mass-splitting of the H and A bosons lies outside the range allowed by the theory in the absence of CP-mixing, and/or the detailed energy dependence of the produced lineshape is clearly different from the one obtained by redefining the masses, but not allowing any mixing.
description: 3 pages, 1 figure, based on talk given at the 2007 Europhysics Conference on High Energy Physics, Manchester, 19-25 July
Reliability Measurements: Methods And Estimation In Healthcare Research
Creators: name: Pandurangan, Hariprasath
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 420599
subject: Nursing not elsewhere classified

description: The primary purpose of this paper is to discuss the idea of reliability for research. The authors present methods
for calculating statistical reliability. Reliability is crucial for tests intended to be stable across time. That means
that if a user conducted a test multiple times, its result should be identical every time. Although it's impossible to
determine reliability precisely, there are ways to assess it. Each instrument has an element of reliability. This
article focuses on methods for computing reliability in quantitative information, including ratio and interval data.
Interval data has equally spaced intervals between the numbers; however, they aren't connected to the actual zero
point and do not accurately represent the quantity. Ratio data comprises numbers that represent units that have
equal intervals. They are measured from a true zero. Reliability refers to how much the test, process, or
instrument (such as an instrument or questionnaire) produces similar results under different conditions as long as
nothing else has changed. Stability, internal consistency, and equivalence are all reliability measures employed
in research. Stability is the term used to describe the instrument's capacity to give the same results using repeated
measurements. Internal consistency refers to all components of the apparatus having an identical concept,
feature, or characteristic. Equivalence signifies that the device yields exact results when similar or parallel
procedures or instruments are employed.
Cultural Heritage Reconstruction using Virtual and Augmented Reality
Creators: name: Tukhboeva, Nilufar
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2023
Subjects: subject: 004

description: Augmented reality and virtual reality (commonly abbreviated as AR and VR respectively) are reality technologies that either enhance or replace a real-life environment with a simulated one. AR enhances your surroundings by adding digital elements to a live view, usually by using the camera on a smartphone. VR is a completely captivating experience that replaces a real-life environment with a simulated one. This article presents the connection between the reconstruction of medieval architecture and the further improvement of ways to use it effectively, the proper use of architectural monuments to improve travel opportunities is an important challenge. Particular attention is paid to the sustainability of old cities, preserving the buffer zone of architectural monuments, development can improve the tourism industry and convey new opportunities. The first was the creation of a highly appealing visualization system that allows a virtual visit to Aksaray (Amir Timur Palace in Shakhrisabz, Uzbekistan). The second is the possibility of using this technology for a virtual exploration of Aksaray, from a technical and architectural point of view.
Dynamic scale adaptation algorithm of image etalon functions
Creators: name: Gavrikov, Mikhail
name: Sinetsky, Roman
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2022
Subjects: subject: 004

description: An algorithm for large-scale adaptation of prototype functions representing image classes is proposed. The algorithm identifies the parameters of nonlinear scale distortions contained in the functions representing the observed image realizations, and then transforms the original prototype function using the previously proposed model. The algorithm works on a class of images of regular phase processes that have the property of quasi-similarity of shape. Two models of large-scale nonlinear transformations are considered: symmetric and asymmetric. The differences between the models and the practical results of their application are given. The algorithm was experimentally tested on the images of prototypes of fragments of speech signals, electrocardiosignals, and engine cylinder pressure detector signals. Examples and experimental data confirming the effectiveness of the algorithm are given. Conclusions are formulated about the possibility of using the algorithm with both models in practical problems.
Gluon mass and freezing of the QCD coupling
Creators: name: Aguilar, A. C.
name: Papavassiliou, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Infrared finite solutions for the gluon propagator of pure QCD are obtained from the gauge-invariant non-linear Schwinger-Dyson equation formulated in the Feynman gauge of the background field method. These solutions may be fitted using a massive propagator, with the special characteristic that the effective mass employed drops asymptotically as the inverse square of the momentum transfer, in agreement with general operator-product expansion arguments. Due to the presence of the dynamical gluon mass the strong effective charge extracted from these solutions freezes at a finite value, giving rise to an infrared fixed point for QCD.
description: 3 pages, 2 figures, based on talk given at the 2007 Europhysics Conference on High Energy Physics, Manchester, 19-25 July
Quasi-fixed points from scalar sequestering and the little hierarchy problem in supersymmetry
Creators: name: Martin, Stephen P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In supersymmetric models with scalar sequestering, superconformal strong dynamics in the hidden sector suppresses the low-energy couplings of mass dimension two, compared to the squares of the dimension one parameters. Taking into account restrictions on the anomalous dimensions in superconformal theories, I point out that the interplay between the hidden and visible sector renormalizations gives rise to quasi-fixed point running for the supersymmetric Standard Model squared mass parameters, rather than driving them to 0. The extent to which this dynamics can ameliorate the little hierarchy problem in supersymmetry is studied. Models of this type in which the gaugino masses do not unify are arguably more natural, and are certainly more likely to be accessible, eventually, to the Large Hadron Collider.
description: 23 pages
A general instance-based learning framework for studying intuitive decision-making in a cognitive architecture
Creators: name: Thomson, Robert
name: Lebiere, Christian
name: Anderson, John R.
name: Staszewski, James
Publisher: name: Carnegie Mellon University
Year: 2014
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: Cognitive architectures (e.g., ACT-R) have not traditionally been used to understand intuitive decision-making; instead, models tend to be designed with the intuitions of their modelers already hardcoded in the decision process. This is due in part to a fuzzy boundary between automatic and deliberative processes within the architecture. We argue that instance-based learning satisfies the conditions for intuitive decision-making described in Kahneman and Klein (2009), separates automatic from deliberative processes, and provides a general mechanism for the study of intuitive decision-making. To better understand the role of the environment in decision-making, we describe biases as arising from three sources: the mechanisms and limitations of the human cognitive architecture, the information structure in the task environment, and the use of heuristics and strategies to adapt performance to the dual constraints of cognition and environment. A unified decision-making model performing multiple complex reasoning tasks is described according to this framework.
Achievable Rates for Channels with Deletions and Insertions
Creators: name: Venkataramanan, Ramji
name: Tatikonda, Sekhar
name: Ramchandran, Kannan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper considers a binary channel with deletions and insertions, where each input bit is transformed in one of the following ways: it is deleted with probability d, or an extra bit is added after it with probability i, or it is transmitted unmodified with probability 1-d-i. A computable lower bound on the capacity of this channel is derived. The transformation of the input sequence by the channel may be viewed in terms of runs as follows: some runs of the input sequence get shorter/longer, some runs get deleted, and some new runs are added. It is difficult for the decoder to synchronize the channel output sequence to the transmitted codeword mainly due to deleted runs and new inserted runs. The main idea is a mutual information decomposition in terms of the rate achieved by a sub-optimal decoder that determines the positions of the deleted and inserted runs in addition to decoding the transmitted codeword. The mutual information between the channel input and output sequences is expressed as the sum of the rate achieved by this decoder and the rate loss due to its sub-optimality. Obtaining computable lower bounds on each of these quantities yields a lower bound on the capacity. The bounds proposed in this paper provide the first characterization of achievable rates for channels with general insertions, and for channels with both deletions and insertions. For the special case of the deletion channel, the proposed bound improves on the previous best lower bound for deletion probabilities up to 0.3.
description: To appear in IEEE Transactions on Information Theory. For the deletion channel, the new capacity lower bound improves on the previous best bound for deletion probabilities up to 0.3
Fractal Fluctuations and Quantum-Like Chaos in the Brain by Analysis of Variability of Brain Waves: A New Method Based on a Fractal Variance Function and Random Matrix Theory
Creators: name: Conte, E.
name: Khrennikov, A.
name: Federici, A.
name: Zbilut, J. P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We developed a new method for analysis of fundamental brain waves as recorded by EEG. To this purpose we introduce a Fractal Variance Function that is based on the calculation of the variogram. The method is completed by using Random Matrix Theory. Some examples are given.
The Petersen graph has no quantum symmetry
Creators: name: Schmidt, Simon
Publisher: name: arXiv
Year: 2018
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: In 2007, Banica and Bichon asked whether the well-known Petersen graph has quantum symmetry. In this article, we show that the Petersen graph has no quantum symmetry, i.e. the quantum automorphism group of the Petersen graph is its usual automorphism group, the symmetric group $S_5$.
description: 7 pages, notation changed
A combined immersed boundary and discrete unified gas kinetic scheme for particle-fluid flows
Creators: name: Tao, Shi
name: Zhang, Haolong
name: Guo, Zhaoli
name: Wang, Lian-Ping
Publisher: name: arXiv
Year: 2018
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A discrete unified gas kinetic scheme (DUGKS) coupled with the immersed boundary (IB) method is developed to perform interface-resolved simulation of particle-laden flows. The present method (IB-DUGKS) preserves the respective advantages of the IB and DUGKS, i.e., the flexibility and efficiency for treating complex flows, and the robustness and low numerical-dissipation. In IB-DUGKS, the IB method is used to treat the fluid-solid interfaces and the DUGKS is applied to simulate the fluid flow, making use of the Lagrangian and Eulerian meshes, respectively. Those two meshes are fully independent, which contributes to the avoidance of grid regeneration when a solid particle moves. Specifically, in the present implementation of IB-DUGKS, the no-slip boundary condition at the particle surface is accurately enforced by introducing an efficient iterative forcing algorithm, and the IB force induced by the particle boundary is conveniently incorporated into the DUGKS with the Strange-Splitting scheme. The accuracy of the IB-DUGKS is first verified in the flows past a stationary cylinder and an oscillating cylinder in a quiescent fluid. After that, several well-established two- and three-dimensional particulate flow problems are simulated, including the sedimentation of a particle and the DKT dynamics of two particles in a channel, and a group of particles settling in an enclosure. In all test cases, the results are in good agreement with the data available in the literature, demonstrating that the proposed IB-DUGKS is a promising tool for simulating particulate flows.
description: 25 pages, 19 figures
A focus on blood glucose monitoring: relation to glycemic control and determinants of frequency.
Creators: name: Helgeson, Vicki
name: Honcharuk, Erin
name: Becker, Dorothy
name: Escobar, Oscar
name: Siminerio, Linda
Publisher: name: Carnegie Mellon University
Year: 2011
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: OBJECTIVE: To re-examine the relation of blood glucose monitoring to glycemic control among adolescents with type 1 diabetes and to evaluate the relation of demographic, behavioral, and psychosocial characteristics of adolescents who monitor more and less frequently. RESEARCH DESIGN AND METHODS: Participants were 132 adolescents with type 1 diabetes (average age = 12 yr) and their parents, recruited from Children's Hospital of Pittsburgh. Adolescents were interviewed annually for five consecutive years after routine clinic appointments. At each assessment, data from blood glucose meters were downloaded and glycosylated hemoglobin A1c was recorded from medical records. RESULTS: More frequent blood glucose monitoring was related to better glycemic control. Adolescents who monitored more frequently were younger, from higher social status families, on insulin pumps, and had higher self-efficacy. Age-related declines in blood glucose monitoring occurred among adolescents with low self-esteem, high stressful life events, and lower parental support. CONCLUSIONS: Given the importance of blood glucose monitoring for good glycemic control, future research should enhance adolescents' self-efficacy for monitoring and intervene with those who are at risk for age-related declines in blood glucose monitoring.
title: ADCO, Ordre cistercien : comptes (1499-1515) (11 H 1162), f. 00188
Creators: name: de la Côte-d'Or, Archives départementales
name: CBMA/CG21/F.PETOT/2019
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: comptes
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Ordre cistercien : comptes (1499-1515), Archives départementales de la Côte-d'Or, (11 H 1162). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Ordre cistercien : comptes (1499-1515), Archives départementales de la Côte-d'Or, (11 H 1162), f. 00188, in Projet CBMA - Corpus Burgundiae Medii Aevi \[Ressource en ligne\], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Development of physical and psychological states graphs of people and their software implementation in the tasks of evacuation modelling
Creators: name: Yurchenko, Ekaterina
name: Shulga, Irina
name: Tugarinov, Mikhail
name: Shelekhov, Igor
name: Torgaev, Stanislav
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2021
Subjects: subject: 004

description: The purpose of the presented in the article results is to increase the realism of the people evacuation modeling in case of emergency situation. Models that exist today do not describe in detail physical and psychological states of the characters during the simulation. This article presents the results of the development of people physical and psychological states graphs in the conditions of evacuation. All graphs are presented as extended final state machines. On the basis of the developed finite state machines the description of state transitions was carried out and algorithms were built This work was carried out as part of the development of a comprehensive 3D model of the people evacuation processes of in emergency situations in particular fires. A software implementation in the Unreal Engine program of these states was performed. Examples of the behavior of characters in various psychological and physical states are also presented.
The role of Dark Matter interaction in galaxy clusters
Creators: name: Pellicer, C. E.
name: Ferreira, Elisa G. M.
name: Guariento, Daniel C.
name: Costa, André A.
name: Graef, Leila L.
name: Coelho, Andrea
name: Abdalla, Elcio
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider a toy model to analyze the consequences of dark matter interaction with a dark energy background on the overall rotation of galaxy clusters and the misalignment between their dark matter and baryon distributions when compared to ΛCDM predictions. The interaction parameters are found via a genetic algorithm search. The results obtained suggest that interaction is a basic phenomenon whose effects are detectable even in simple models of galactic dynamics.
description: RevTeX 4.1, 5 pages, 3 figures
Action and expression of learning outside the lecture room 2024
Creators: name: Espinoza-Ramos, Gustavo R.
Publisher: name: National Teaching Repository
Year: 2024
Subjects: classificationCode: 390199
subject: Curriculum and pedagogy not elsewhere classified
classificationCode: 520403
subject: Learning, motivation and emotion
classificationCode: 390303
subject: Higher education
classificationCode: 390407
subject: Inclusive education
classificationCode: 390201
subject: Education policy
classificationCode: 390402
subject: Education assessment and evaluation
classificationCode: 390499
subject: Specialist studies in education not elsewhere classified

description: Research demonstrates the challenges and positive impact of field trips on student engagement in higher education. However, it raises some questions about their academic impact and their organisation, including how inclusive these field trips are. And what options are available if a student cannot attend?

Offering different modes of field trips, such as walking or online tours, permits reaching a wider audience and empowers students to engage on their own.

This presentation aims to understand outdoor learning activities as part of embedding Education for Sustainable Development (ESD) in the curricula. The presentation focuses on field trips, their challenges, and the positive impact of student engagement in higher education. Offering different modes of field trips, such as walking or online tours, permits reaching a wider audience and empowers students to engage independently. In addition, the presentation will demonstrate the application of Universal Design for Learning (UDL) principles in higher education.
Commissioning of the ATLAS Level-1 Trigger with Cosmic Rays
Creators: name: Pauly, Thilo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The ATLAS detector at CERN's Large Hadron Collider will be exposed to proton-proton collisions from beams crossing at 40 MHz. A three-level trigger system was designed to select potentially interesting events and reduce the incoming rate to 100-200 Hz. The first trigger level (LVL1) is implemented in custom-built electronics, the second and third trigger levels are realized in software. Based on calorimeter information and hits in dedicated muon-trigger detectors, the LVL1 decision is made by the central-trigger processor yielding an output rate of less than 100 kHz. The allowed latency for the trigger decision at this stage is less than 2.5 microseconds. Installation of the final LVL1 trigger system at the ATLAS site is in full swing, to be completed later this year. We present a status report of the main components of the first-level trigger and the in-situ commissioning of the full trigger chain with cosmic-ray muons.
description: On behalf of the ATLAS TDAQ Level-1 Trigger Group. Proceedings for 2007 Europhysics Conference on High Energy Physics, Manchester, July 2007
The Christiansen Effect in Saturn's narrow dusty rings and the spectral identification of clumps in the F ring
Creators: name: Hedman, M. M.
name: Nicholson, P. D
name: Showalter, M. R.
name: Brown, R. H.
name: Buratti, B. J.
name: Clark, R. N.
name: Baines, K.
name: Sotin, C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Stellar occultations by Saturn's rings observed with the Visual and Infrared Mapping Spectrometer (VIMS) onboard the Cassini spacecraft reveal that dusty features such as the F ring and the ringlets in the Encke and the Laplace Gaps have distinctive infrared transmission spectra. These spectra show a narrow optical depth minimum at wavelengths around 2.87 microns. This minimum is likely due to the Christiansen Effect, a reduction in the extinction of small particles when their (complex) refractive index is close to that of the surrounding medium. Simple Mie-scattering models demonstrate that the strength of this opacity dip is sensitive to the size distribution of particles between 1 and 100 microns across. Furthermore, the spatial resolution of the occultation data is sufficient to reveal variations in the transmission spectra within and among these rings. For example, in both the Encke Gap ringlets and F ring, the opacity dip weakens with increasing local optical depth, which is consistent with the larger particles being concentrated near the cores of these rings. The strength of the opacity dip varies most dramatically within the F ring; certain compact regions of enhanced optical depth lack an opacity dip and therefore appear to have a greatly reduced fraction of grains in the few-micron size range.Such spectrally-identifiable structures probably represent a subset of the compact optically-thick clumps observed by other Cassini instruments. These variations in the ring's particle size distribution can provide new insights into the processes of grain aggregation, disruption and transport within dusty rings. For example, the unusual spectral properties of the F-ring clumps could perhaps be ascribed to small grains adhering onto the surface of larger particles in regions of anomalously low velocity dispersion.
description: 42 pages, 15 figures, accepted for publication in Icarus. A few small typographical errors fixed to match correction in proofs
Additional file 2 of Postoperative analgesic effectiveness of quadratus lumborum block: systematic review and meta-analysis for adult patients undergoing hip surgery
Creators: name: Xiong, Haolan
name: Chen, Xiaohua
name: Zhu, Wenxiu
name: Yang, Wuke
name: Wang, Fuming
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health

description: Additional file 2. PRISMA 2020 checklist.
Neutrino mixing, flavor states and dark energy
Creators: name: Blasone, M.
name: Capolupo, A.
name: Capozziello, S.
name: Vitiello, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We shortly summarize the quantum field theory formalism for the neutrino mixing and report on recent results showing that the vacuum condensate induced by neutrino mixing can be interpreted as a dark energy component of the Universe.
description: 5 pages. Presented at Roma International Conference on Astro-Particle physics (RICAP'07), Roma, Italy, 20 - 22 June 2007
Realistic Traffic Generation for Web Robots
Creators: name: Brown, Kyle
name: Doran, Derek
Publisher: name: arXiv
Year: 2017
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Critical to evaluating the capacity, scalability, and availability of web systems are realistic web traffic generators. Web traffic generation is a classic research problem, no generator accounts for the characteristics of web robots or crawlers that are now the dominant source of traffic to a web server. Administrators are thus unable to test, stress, and evaluate how their systems perform in the face of ever increasing levels of web robot traffic. To resolve this problem, this paper introduces a novel approach to generate synthetic web robot traffic with high fidelity. It generates traffic that accounts for both the temporal and behavioral qualities of robot traffic by statistical and Bayesian models that are fitted to the properties of robot traffic seen in web logs from North America and Europe. We evaluate our traffic generator by comparing the characteristics of generated traffic to those of the original data. We look at session arrival rates, inter-arrival times and session lengths, comparing and contrasting them between generated and real traffic. Finally, we show that our generated traffic affects cache performance similarly to actual traffic, using the common LRU and LFU eviction policies.
description: 8 pages
Knights and gold stars: a tale of innersource incentivization
Creators: name: DEY, TAPAJIT
name: Jiang, Willem
name: Fitzgerald, Brian
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 4612
subject: Software engineering

description: We describe a comprehensive InnerSource incentivization program implemented at Huawei that has had impressive early results, leading to significant increases in the number of InnerSource projects, participants, departments, and lines of code cont.
Supernova bound on keV-mass sterile neutrinos reexamined
Creators: name: Raffelt, Georg G.
name: Zhou, Shun
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Active-sterile neutrino mixing is strongly constrained for m_s > 100 keV to avoid excessive energy losses from supernova cores. For smaller m_s, matter effects suppress the effective mixing angle except for a resonant range of energies where it is enhanced. We study the case of ν_tau-ν_s-mixing where a ν_tau-\barν_tau asymmetry builds up due to the strong excess of ν_s over \barν_s emission or vice versa, reducing the overall emission rate. In the warm dark matter range m_s < 10 keV the mixing angle is essentially unconstrained.
description: 6 pages, 4 figures; minor changes, references updated, matches the published version
Influence of synthetic image datasets on the result of neural networks for object detection
Creators: name: Kniazev, Aleksandr
name: Slivnitsin, Pavel
name: Mylnikov, Leonid
name: Schlechtweg, Stefan
name: Kokoulin, Andrey
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2021
Subjects: subject: 004

description: The goal of the article is research of ways to improve the quality of neural networks object detection. To achieve this goal we suggest to use synthetic image datasets. The algorithm of generating synthetic images, which uses the environment of the detected object, is described in the article. That algorithm could be applied in the control algorithm of the robotic system for luminaire replacement that is based on target object detection. 3D models and 3D camera images of detected objects, backgrounds, noise objects and different effects are used to create realistic images that will increase the quality of predictions. Quality tests were made with synthetic and real datasets. Results show that quality could be increased up to 16%. Ratio of real and synthetic data is 1:4.
GD 394: A mystery at all wavelengths
Creators: name: Wilson, David
name: Gaensicke, Boris
name: JJ Hermes
name: Drake, Jeremey
name: Toloza, Odette
name: Navarro, Natalia Garza
Publisher: name: Zenodo
Year: 2021
Subjects: Stellar Astrophysics

description: Recent discoveries have demonstrated that planetary systems routinely survive the post-main-sequence evolution of their host stars, leaving the resulting white dwarf with a rich circumstellar environment. Among the most intriguing is the hot white dwarf GD 394, exhibiting a unique 1.150 ± 0.003 day flux variation detected in Extreme Ultraviolet Explorer observations in the mid-1990s. The variation has eluded a satisfactory explanation, but hypotheses include channelled accretion producing a dark spot of metals, occultation by a gas cloud from an evaporating planet, or heating from a flux tube produced by an orbiting iron-cored planetesimal. We present TESS observations of GD 394 demonstrating a 0.12 ± 0.01% flux variation with a period of 1.146 ± 0.001 days, consistent with the EUVE period and the first re-detection of the flux variation outside of the extreme ultraviolet. We describe the multi-wavelength observational history of GD 394, including HST, TESS and Chandra data, and discuss the implications of our results for the various physical explanations put forward for the variability of GD 394 and the opportunities to discover more GD394-like white dwarfs with TESS in the future.
description: {"references": ["https://ui.adsabs.harvard.edu/abs/2020ApJ...897L..31W/abstract", "https://ui.adsabs.harvard.edu/abs/2000ApJ...537..977D/abstract", "https://ui.adsabs.harvard.edu/abs/2019MNRAS.483.2941W/abstract"]}
A fine-grained analysis of facial expression processing in high-functioning adults with autism
Creators: name: Humphreys, Kate
name: Minshew, Nancy
name: Leonard, Grace Lee
name: Behrmann, Marlene
Publisher: name: Carnegie Mellon University
Year: 2007
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: It is unclear whether individuals with autism are impaired at recognizing basic facial expressions, and whether, if any impairment exists, it applies to expression processing in general, or to certain expressions, in particular. To evaluate these alternatives, we adopted a fine-grained analysis of facial expression processing in autism. Specifically, we used the ‘facial expression megamix’ paradigm [Young, A. W., Rowland, D., Calder, A. J, Etcoff, N. L., Seth, A., & Perrett, D. I. (1997). Facial expression megamix: Tests of dimensional and category accounts of emotion recognition Cognition and Emotion, 14, 39–60] in which adults with autism and a typically developing comparison group performed a six alternative forced-choice response to morphs of all possible combinations of the six basic expressions identified by Ekman [Ekman, P. (1972). Universals and cultural differences in facial expressions of emotion. In J. K. Cole (Ed.), Nebraska symposium on motivation: vol. 1971, (pp. 207–283). Lincoln, Nebraska: University of Nebraska Press] (happiness, sadness, disgust, anger, fear and surprise). Clear differences were evident between the two groups, most obviously in the recognition of fear, but also in the recognition of disgust and happiness. A second experiment demonstrated that individuals with autism are able to discriminate between different emotional images and suggests that low-level perceptual difficulties do not underlie the difficulties with emotion recognition.
Stationary states of spinless particles in square potentials
Creators: name: Cardoso, Tatiana R.
name: de Castro, Antonio S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The one-dimensional Klein-Gordon equation is investigated with the most general Lorentz structure for the external potentials. The analysis and calculation of the reflection and transmission coefficients for the scattering of particles in a square potential, with an arbitrary mixing of vector and scalar couplings, reveal circumstances which conflict with the predictions from nonrelativistic quantum mechanics. It is shown that such anomalous scatterings are mediated by antiparticle bound states, even if the incident particles have low energies. The analysis of bound states also reveals surprising results, remarkable is the inhibition of the Schiff-Snyder-Weinberg effect due to the presence of a scalar coupling.
description: In Portuguese
Locally conformally Kähler manifolds with holomorphic Lee field
Creators: name: Moroianu, Andrei
name: Moroianu, Sergiu
name: Ornea, Liviu
Publisher: name: arXiv
Year: 2017
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We prove that a compact lcK manifold with holomorphic Lee vector field is Vaisman provided that either the Lee field has constant norm or the metric is Gauduchon (i.e., the Lee field is divergence-free). We also give examples of compact lcK manifolds with holomorphic Lee vector field which are not Vaisman.
description: 6 pages
Estimation of the available bandwidth of the cellular network connection with Android API
Creators: name: Gering, Maxim
name: Mareev, Nikolai
name: Siemens, Eduard
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2022
Subjects: subject: 004

description: The speed at which mobile and wireless networks are currently developed continues to be astounding. The rate of data reception and transmission over a wireless network becomes a major factor for consumers and mobile phone service providers, as service providers compete with each other for leading positions in the quality of mobile communications provided. This paper describes the problem of available bandwidth estimation of the LTE network in dense urban environments under the TCP BBR Congestion Control protocol. For this, the open-source HTWK Signal Harvester app from the Leipzig University of Applied Sciences has been modified to estimate the available bandwidth of a connected 4G LTE network. The test results presented in the article show that the available bandwidth gathered from Android 11 API metrics are close to the results obtained by iPerf3, a stand alone utility for active measuring of maximum achievable bandwidth on IP networks, widely used in PC and server computers.
A dual-process account of the list-length and strength-based mirror effects in recognition
Creators: name: Cary, Melanie
name: Reder, Lynne
Publisher: name: Carnegie Mellon University
Year: 2003
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: Manipulating either list length (e.g., few vs. many study items) or encoding strength (e.g., one presentation vs. multiple presentations of each study item) produces a recognition mirror effect. A formal dual-process theory of recognition memory that accounts for the word-frequency mirror effect is extended to account for the list-length and strength-based mirror effects. According to this theory, the hit portions of these mirror effects result from differential ease of recollection-based recognition, and the false alarm portions result from differential reliance on familiarity-based recognition. This account yields predictions for participants’ Remember and Know responses as a function of list length and encoding strength. Empirical data and model fits from four experiments support these predictions. The data also demonstrate a reliable list-length effect when several potential confounding factors are controlled, contributing to the debate regarding the effect of list length on recognition.
Child Mortality and Indoor Air Pollution
Creators: name: Chau, Nancy H.
name: Basu, Arnab K.
name: Byambasuren, Tsenguunjav
name: Khanna, Neha
name: Chau, Nancy H.
name: Basu, Arnab K.
name: Byambasuren, Tsenguunjav
name: Khanna, Neha
Publisher: name: Unknown
Year: 2021
Subjects: subject: International Development
subject: Child Mortality
subject: Indoor Air Pollution
subject: Cooking Fuel
subject: India

description: How serious is indoor air pollution (IAP) a mortality threat to young children? This paper estimates the causal effect of cooking fuel choice – a predominant cause of IAP – on infant mortality in India (1992-2016), where the most health-endangering biomass fuels are also most commonplace. Leveraging the speed of change in forest cover and land ownership for identification, we find polluting fuel choice to impose highly heterogeneous local infant mortality effects by age group (from insignificant to 4:7 percent increase) – implying the loss of two lives every 1,000 live births. These conclusions are robust to alternative estimation strategies and additional controls.
Scaling properties of spectra in new exact solutions of rotating, multi-component fireball hydrodynamics
Creators: name: Csörgő, T.
name: Kasza, G.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We describe fireballs that rehadronize from a perfect fluid of quark matter, characterized by the lattice QCD equation of state, to a chemically frozen, multi-component mixture, that contains various kinds of observable hadrons. For simplicity and clarity, we apply a non-relativistic approximation to describe the kinematics of this expansion. Unexpectedly, we identify a secondary explosion that may characterize fireball hydrodynamics at the QCD critical point. After rehadronization, the multi-component mixture of hadrons keeps on rotating and expanding together, similarly to a single component fluid. After kinetic freeze-out, the effective temperature $T_{i}$ of the single-particle spectra of hadron type $h_i$ is found to be a sum of the kinetic freeze-out temperature $T_f$ (that is independent of the hadron type $h_i$) and a term proportional to the mass $m_i$ of hadron type $h_i$. The coefficient of proportionality to $m_i$ is also found to be independent of the hadron type $h_i$ but be dependent on the radial flow and vorticity of collective dynamics.
description: 12 pages, 2 figures, 6 tables, invited talk of G. Kasza at the 10th Bolyai-Gauss-Lobachevsky conference, Gy\"ongy\"os, Hungary, Aug. 21-25, 2017. Submitted for a publication to the MDPI journal Universe
Quantum measurements without macroscopic superpositions
Creators: name: Spehner, Dominique
name: Haake, Fritz
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study a class of quantum measurement models. A microscopic object is entangled with a macroscopic pointer such that each eigenvalue of the measured object observable is tied up with a specific pointer deflection. Different pointer positions mutually decohere under the influence of a bath. Object-pointer entanglement and decoherence of distinct pointer readouts proceed simultaneously. Mixtures of macroscopically distinct object-pointer states may then arise without intervening macroscopic superpositions. Initially, object and apparatus are statistically independent while the latter has pointer and bath correlated according to a metastable local thermal equilibrium. We obtain explicit results for the object-pointer dynamics with temporal coherence decay in general neither exponential nor Gaussian. The decoherence time does not depend on details of the pointer-bath coupling if it is smaller than the bath correlation time, whereas in the opposite Markov regime the decay depends strongly on whether that coupling is Ohmic or super-Ohmic.
description: 50 pages, 5 figures, changed content
Linear confinement of a scalar particle in a Gödel-type spacetime
Creators: name: Vitória, R. L. L.
name: Furtado, C.
name: Bakke, K.
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Based on the studies of confinement of quarks, we introduce a linear scalar potential into the relativistic quantum dynamics of a scalar particle. Then, we analyse the linear confinement of a relativistic scalar particle in a Gödel-type spacetime in the presence of a topological defect. We consider a Gödel-type spacetime associated with null curvature, i.e., the Som-Raychaudhuri spacetime, which is characterized by the presence of vorticity in the spacetime. Then, we search for analytical solutions to the Klein-Gordon equation and analyse the influence of the topology of the cosmic string and the vorticity on the relativistic energy levels.
description: 11 pages, no figure. Accepted for publication in EPJC
Distributed fiber-optic sensors based on principle of stimulated brillouin scattering
Creators: name: Bogachkov, Igor
name: Gorlov, Nikolai
name: Kitova, Evgenia
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2021
Subjects: subject: 004

description: The report is devoted to the analysis of distributed fiber-optic sensors based on the phenomenon of stimulated Brillouin scattering. They are of great interest for research due to their ability to measure the temperature and strains at superlong distances with high accuracy and high spatial resolution. The functional dependences of the output signals characteristics on parameters measured by the sensors are given in the paper. Of particular interest are the results of the analysis of the spectral component shifts in the Brillouin light scattering depending on the fiber elongation and temperature. After a brief review of the basic theoretical principles the results of some researches aimed to expand the dynamic range and to increase spatial resolution. The results of simulation in professional design software environment OptiSystem 17.1 are described in the article. To test the simulation results and detection of common features in spectrograms the experimental testing was carried out. The results obtained show that it is possible to implement fiber-optic sensors based on Brillouin scattering in telecommunication systems, mining, oil and gas industry, as well as in electric-power industry, construction, aviation and space industry. The objectives for the further research are to perform metrological analysis at all stages of the method implementation, to complete the base of Brillouin spectrograms for optical fiber of various types and to improve algorithms for automated processing spectra in order to expand functionality of the systems. In conclusion, the overview of some applications is given in this paper.