cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Inflationary cosmology with two-component fluid and thermodynamics
Creators: name: Gunzig, Edgard
name: Nesteruk, Alexei
name: Stokley, Martin
Publisher: name: arXiv
Year: 1999
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a simple and self-consistent cosmology with a phenomenological model of quantum creation of radiation and matter due to decay of the cosmological constant $Λ$. The decay drives a non-isentropic inflationary epoch, which exits smoothly to the radiation-dominated era, without reheating, and then evolves to the dust era. The initial vacuum for radiation and matter is a regular Minkowski vacuum. The created radiation and matter obeys standard thermodynamic laws, and the total entropy produced is consistent with the accepted value. This paper is an extension of the model with the decaying cosmological constant considered previously. We compare our model with the quantum field theory approach to creation of particles in curved space.
description: 16 pages Latex
Gonimbrasia rectilineata
Creators: name: Mbata, Keith J.
name: Prins, Jurate De
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Saturniidae
Gonimbrasia
Gonimbrasia rectilineata

description: Gonimbrasia rectilineata (Sonthonnax, 1899a)
COMMON NAME(S): Saturniid or Edible caterpillars.
SYNONYM(S): Nudaurelia kasaiensis Bouvier, 1926; Nudaurelia mpalensis Sonthonnax, 1899a; Nudaurelia richelmanni Weymer, 1909.
IUCN STATUS: Not Evaluated (NE).
DISTRIBUTION: Angola, Democratic Republic of Congo, Kenya, Malawi, Republic of Congo, South Africa, Tanzania, Uganda, Zambia.
LOCALITY IN ZAMBIA: Kasempa, in Northwestern Province; Kopa, in Muchinga Province; Mbala and Mporokoso, in Northern Province; Lusaka, in Lusaka Province; Ndola, in Copperbelt Province; Serenje, in Central Province; Samfya, in Luapula Province.
LARVAL HOSTPLANT(S): Larval foodplants include Uapaca kirkiana M̧ll.Arg.(Phyllanthaceae), Syzygium owariense (P.Beauv.) Benth. (Myrtaceae), Salix sp. (Salicaceae) and Diplorhynchus condylocarpon (M̧ll.Arg.) Pichon (Apocynaceae) (Pinhey 1972b).
SOURCES: De Prins & De Prins 2022; Pinhey 1972b.
description: Published as part of Mbata, Keith J. & Prins, Jurate De, 2023, Annotated checklist of moths of Zambia (Insecta: Lepidoptera), pp. 1-503 in Zootaxa 5354 (1) on page 160, DOI: 10.11646/zootaxa.5354.1.1, http://zenodo.org/record/10130434
Development and Validation of a Structure-Based Computational Method for the Prediction of Protein Specificity Profiles
Creators: name: Gagnon, Olivier
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2019
Subjects: Protein
Specificity
VIPER
Peptide Arrray
Web
Computational Protein Design

description: Post-translational modification (PTM) of proteins by enzymes such as methyltransferases, kinases and deacetylases play a crucial role in the regulation of many metabolic pathways. Determining the substrate scope of these enzymes is essential when studying their biological role. However, the combinatorial nature of possible protein substrate sequences makes experimental screening assays intractable. To predict new substrates for proteins, various computational approaches have been developed. Our method relies on crystallographic data and a novel multistate computational protein design algorithm. We previously used our method to successfully predict four new substrates for SMYD2 (Lanouette S & Davey J.A., 2015), doubling the number of known targets for this PTM enzyme that has been difficult to characterize using other methods. This was possible by first extracting a specificity profile of Smyd2 using our algorithm and subsequently screening a peptide library for matching sequences. However, our method did not yield successful results when attempting to reproduce specificity profiles of other proteins (64% accuracy on average). Different protein environments have demonstrated limitations in the methodology and lead us to further develop the algorithm on a more thorough dataset. Using our new optimized method, specificity profile predictions increase by roughly 20% (84% accuracy on average), independent of the structural template used. The algorithm was then used to blindly predict a specificity profile for the methyltransferase Smyd3, an enzyme for which limited data is currently available. A library of 2550 peptides was screened with the predicted profile, yielding 123 matching sequences. We randomly chose 64 for experimental validation (SPOT peptide array) of methylation by Smyd3 and found 45 methylated and 19 non-methylated peptides (70% success rate). Finally, we released to the community a web version of the algorithm, which can be accessed as http://viper.science.uottawa.ca.
Ultrafast demagnetization of Pt magnetic moment in L1${}_0$-FePt probed by hard x-ray free electron laser
Creators: name: Yamamoto, Kohei
name: Kubota, Yuya
name: Suzuki, Motohiro
name: Hirata, Yasuyuki
name: Takubo, Kou
name: Uemura, Yohei
name: Fukaya, Ryo
name: Tanaka, Kenta
name: Nishimura, Wataru
name: Ohkochi, Takuo
name: Katayama, Tetsuo
name: Togashi, Tadashi
name: Tamasaku, Kenji
name: Yabashi, Makina
name: Tanaka, Yoshihito
name: Seki, Takeshi
name: Takanashi, Koki
name: Wadati, Hiroki
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We demonstrate ultrafast magnetization dynamics in a 5d transition metal using circularly-polarized x-ray free electron laser in the hard x-ray region. A decay time of light-induced demagnetization of L1${}_0$-FePt was determined to be $τ_\textrm{Pt} = 0.6\ \textrm{ps}$ using time-resolved x-ray magnetic circular dichroism at the Pt L${}_3$ edge, whereas magneto-optical Kerr measurements indicated the decay time for total magnetization as $τ_\textrm{total} = 0.1\ \textrm{ps}$. A transient magnetic state with the photo-modulated magnetic coupling between the 3d and 5d elements is firstly demonstrated.
description: 6 pages,4 figures
Sideband Instabilities and Defects of Quasipatterns
Creators: name: Echebarria, Blas
name: Riecke, Hermann
Publisher: name: arXiv
Year: 2000
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Quasipatterns have been found in dissipative systems ranging from Faraday waves in vertically vibrated fluid layers to nonlinear optics. We describe the dynamics of octagonal, decagonal and dodecagonal quasipatterns by means of coupled Ginzburg-Landau equations and study their stability to sideband perturbations analytically using long-wave equations as well as by direct numerical simulation. Of particular interest is the influence of the phason modes, which are associated with the quasiperiodicity, on the stability of the patterns. In the dodecagonal case, in contrast to the octagonal and the decagonal case, the phase modes and the phason modes decouple and there are parameter regimes in which the quasipattern first becomes unstable with respect to phason modes rather than phase modes. We also discuss the different types of defects that can arise in each kind of quasipattern as well as their dynamics and interactions. Particularly interesting is the decagonal quasipattern, which allows two different types of defects. Their mutual interaction can be extremely weak even at small distances.
description: 31 pages, 12 figures
Additional file 10 of Analysis of tumor environmental response and oncogenic pathway activation identifies distinct basal and luminal features in HER2-related breast tumor subtypes
Creators: name: Gatza, Michael L
name: Hsiu-Ni Kung
name: Blackwell, Kimberly L
name: Dewhirst, Mark W
name: Marks, Jeffrey R
name: Jen-Tsan Chi
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Authors’ original file for figure 6
The Palomar Transient Factory Sky2Night programme
Creators: name: van Roestel, J.
name: Groot, P. J.
name: Kupfer, T.
name: Verbeek, K.
name: van Velzen, S.
name: Bours, M.
name: Nugent, P.
name: Prince, T.
name: Levitan, D.
name: Nissanke, S.
name: Kulkarni, S. R.
name: Laher, R. R.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present results of the Sky2Night project: a systematic, unbiased search for fast optical transients with the Palomar Transient Factory. We have observed 407 deg$^2$ in $R$-band for 8 nights at a cadence of 2 hours. During the entire duration of the project, the 4.2m William Herschel Telescope on La Palma was dedicated to obtaining identification spectra for the detected transients. During the search, we found 12 supernovae, 10 outbursting cataclysmic variables, 9 flaring M-stars, 3 flaring active Galactic nuclei and no extragalactic fast optical transients. Using this systematic survey for transients, we have calculated robust observed rates for the detected types of transients, and upper limits of the rate of extragalactic fast optical transients of $\mathcal{R}<37\times 10^{-4}$deg$^{-2}$d$^{-1}$ and $\mathcal{R}<9.3\times 10^{-4}$deg$^{-2}$d$^{-1}$ for timescales of 4h and 1d and a limiting magnitude of $R\approx19.7$. We use the results of this project to determine what kind of and how many astrophysical false positives we can expect when following up gravitational wave detections in search for kilonovae.
Transcriptional regulatory networks uncover SPI1 regulatory targets important in breast cancer
Creators: name: Bafi, Bahareh Parcheh
name: Acquaah-Mensah, George
Publisher: name: F1000 Research Limited
Year: 2024

description: This study was designed to elucidate molecular pathways altered in the transition from early- to advanced-stage in Breast Cancer (BrCA) in young and mid-aged patients.
Entwicklung eines E-Learning-Konzeptes zum Capacity Building für die biologische Abfallbehandlung
Creators: name: Kühnel, Christina
Publisher: name: Verlag Abfall aktuell der Ingenieurgruppe RUK GmbH, Stuttgart
Year: 2016
Subjects: subject: Ressourcenwirtschaft Abfallwirtschaft Bioabfall Bioabfallbehandlung E-Learning Online-Lernplattform Problem-Based-Learning
classificationCode: 570
subject: Biowissenschaften, Biologie

description: Weltweit stellen Bioabfälle einen großen Anteil der Siedlungsabfälle dar. Eine Getrennterfassung mit anschließender biologischer Behandlung schöpft das Ressourcenpotenzial der Bioabfälle aus: Substitution von Dünger, Erzeugung erneuerbarer Energien, Reduzierung der Treibhausgasemissionen und des Restmüllaufkommens. Um dieses Wissen öffentlich zugänglich zu machen und für den internationalen Weiterbildungsmarkt zu öffnen, bedarf es einer Online-Lernplattform zur Ansprache relevanter Akteure und bedarfsgerecht aufbereiteter Kompetenzen. Ein konstruktivistischer didaktischer Ansatz im problembasierten Format unterstützt selbstgesteuertes Lernen und wird beruflichen Ansprüchen gerecht.
description: Internationally, organic waste represents a major portion of the municipal solid waste, poses health and sanitary risks and is responsible for methane production if its deposition happens uncontrolled. The separate collection of organic waste followed by a proper biological waste treatment, exploits the potential of the resource organic waste: substitution of fertilizers, production of renewable energy, reduction of greenhouse gas emissions, reduction of residual wastes. To open knowledge to the public and to the international education market, an online learning platform for relevant stakeholders and needs-based core competencies is necessary. A constructivistic didactic approach in a problem-based format supports self-directed learning and serves professional demands.
THE EFFECTIVENESS OF COUNTERTERRORISM MEASURES IN SOMALIA
Creators: name: Anab, Mohamed Sabrie
Publisher: name: Zenodo
Year: 2025
Subjects: EFFECTIVENESS OF COUNTERTERRORISM
COUNTERTERRORISM MEASURES IN SOMALIA

description:                                                                               Abstract

Terrorism, as a phenomenon, has roots that stretch back centuries, even though its modern connotation has evolved significantly. Originally used to describe governmental actions during the "Reign of Terror" in the French Revolution, terrorism is now primarily associated with violent acts committed by non-state actors against civilians to instill fear and achieve political, religious, or ideological objectives. This shift highlights the transformation from state-centric to non-state terrorism, underscoring changes in tactics and targets over time.
Dynamics and conformational propensities of staphylococcal CntA
Creators: name: Abideen, Zain Ul
name: Ahmad, Ashfaq
name: Usman, Muhammad
name: Majaz, Sidra
name: Ali, Waqar
name: Noreen, Shumaila
name: Mahmood, Tariq
name: Nouroz, Faisal
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology
subject: Computational Biology

description: Enzymes use transition metals as co-factors for catalytic roles in biological processes. Notably, manganese, iron, cobalt, nickel, copper and zinc are abundantly used. Staphylococcus aureus, a commensal bacterium asymptomatically, lies on the human body causing variety of infections. S. aureus is equipped by advanced virulence-regulatory circuits of metal acquisition like Cnt that acquires metals at infection sites by utilizing a nicotianamine-like metallophore staphylopine. Despite significant growth in structural studies, how CntA of Cnt system transmits conformational signal upon staphylopine recognition remains elusive. Here, we analyzed the structural changes adopted by CntA during close-to-open transition by computational approaches. CntA uses a bi-domain architectural form of domain II which performed 37° rigid body rotation and 1.1 Å translation assisted by inter-domain hinge cluster residues. Important clustered communities were found regulating the conformational changes in CntA where communities 4 and 5 are found crucial. Besides open and close states, the fluctuating regions sampled two additional intermediate states which were considered close or open previously. CntA prefers fluctuating the non-conserved regions rather than conserved where domain II turned out to be rigid and maintains a stable fold. Overall, the CntA system is a potential target for structural biologist to hamper such conformational behaviors at family level. Communicated by Ramaswamy H. Sarma
A New Guard-Band Call Admission Control Policy Based on Acceptance Factor for Wireless Cellular Networks
Creators: name: Rahman, Md. Asadur
name: Hossain, Mohammad Arif
name: Ahmed, Shakil
name: Chowdhury, Mostafa Zaman
Publisher: name: arXiv
Year: 2018
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: To ensure the maximum utilization of the limited bandwidth resources and improved quality of service (QoS) is the key issue for wireless communication networks. Excessive call blocking is a constraint to attain the desired QoS. In cellular network, as the traffic arrival rate increases, call blocking probability (CBP) increases considerably. Paying profound concern, we proposed a scheme that reduces the call blocking probability with approximately steady call dropping probability (CDP). Our proposed scheme also introduces the acceptance factor in specific guard channel where originating calls get access according to the acceptance factor. The analytical performance proves better performance than the conventional new-call bounding scheme in case of higher and lower traffic arrival rate.
description: International Conference on Informatics, Electronics & Vision (ICIEV), May 2014, Dhaka, Bangladesh
Surface reconstruction induced geometries of Si clusters
Creators: name: Kaxiras, Efthimios
Publisher: name: arXiv
Year: 1997
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We discuss a generalization of the surface reconstruction arguments for the structure of intermediate size Si clusters, which leads to model geometries for the sizes 33, 39 (two isomers), 45 (two isomers), 49 (two isomers), 57 and 61 (two isomers). The common feature in all these models is a structure that closely resembles the most stable reconstruction of Si surfaces, surrounding a core of bulk-like tetrahedrally bonded atoms. We investigate the energetics and the electronic structure of these models through first-principles density functional theory calculations. These models may be useful in understanding experimental results on the reactivity of Si clusters and their shape as inferred from mobility measurements.
description: 9 figures (available from the author upon request) Submitted to Phys. Rev. B
title: Survivability of Wave Energy Converter and Mooring Coupled System using CFD
Creators: name: Ransley, Edward Jack
Publisher: name: Plymouth University
Year: 2015
Subjects: Computational Fluid Dynamics (CFD)
CFD, Computational Fluid Dynamics
OpenFOAM
Survivability
Wave Energy Converter
RANS
VOF
Extreme waves

description: Full version unavailable due to 3rd party copyright restrictions.
description: This thesis discusses the development of a Numerical Wave Tank (NWT) capable of describing the coupled behaviour of Wave Energy Converters (WECs) and their moorings under extreme wave loading. The NWT utilises the open-source Computational Fluid Dynamics (CFD) software OpenFOAM(R) to solve the fully nonlinear, incompressible, Reynolds-Averaged Navier-Stokes (RANS) equations for air and water using the Finite Volume Method (FVM) and a Volume of Fluid (VOF) treatment of the interface. A method for numerically generating extreme waves is devised, based on the dispersively-focused NewWave theory and using the additional toolbox waves2Foam. A parametric study of the required mesh resolution shows that steeper waves require finer grids for mesh independence. Surface elevation results for wave-only cases closely match those from experiments, although an improved definition of the flow properties is required to generate very steep focused waves. Predictions of extreme wave run-up and pressure on the front of a fixed truncated cylinder compare well with physical measurements; the numerical solution successfully predicts the secondary loading cycle associated with the nonlinear ringing effect and shows a nonlinear relationship between incident crest height and horizontal load. With near perfect agreement during an extreme wave event, the reproduction of the six degree of freedom (6DOF) motion and load in the linearly-elastic mooring of a hemispherical-bottomed buoy significantly improves on similar studies from the literature. Uniquely, this study compares simulations of two existing WEC designs with scale-model tank tests. For the Wavestar machine, a point-absorber constrained to pitch motion only, results show good agreement with physical measurements of pressure, force and float motion in regular waves, although the solution in the wake region requires improvement. Adding bespoke functionality, a point-absorber designed by Seabased AB, consisting of a moored float and Power Take-Off (PTO) with limited stroke length, translator and endstop, is modelled in large regular waves. This represents a level of complexity not previously attempted in CFD and the 6DOF float motion and load in the mooring compare well with experiments. In conclusion, the computational tool developed here is capable of reliably predicting the behaviour of WEC systems during extreme wave events and, with some additional parameterisation, could be used to assess the survivability of WEC systems at full-scale before going to the expense of deployment at sea.
Investigation of binding modes of spider toxin–human voltage-gated sodium channel subtybe 1.7
Creators: name: Gao, Shasha
name: Na, Risong
name: Yang, Lianjuan
name: Yu, Hui
name: Zhao, Xi
name: Huang, Xuri
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified

description: The human voltage-gated sodium channel subtype 1.7 (hNaV1.7) is an attractive target for the development of potent and selective novel analgesics. HwTx-IV, a spider derived peptide toxin with 35-residue, inhibits hNaV1.7 with high potency by influencing the kinetics and gating behaviors of the channel, kinetics refers to the control of ion channels on and off by binding to a voltage sensor domains, so it is classified as gating modifier toxins (GMTs). In this study, we study how HwTx-IV and its variant exert its inhibitory potency on hNav1.7 using a range of biophysical techniques including homology modelling, molecular docking, molecular dynamics simulation, and umbrella sampling. The results show that the binding free energy of HwTx-IV and m3-HwTx-IV to hNaV1.7 is -15.00 kJ/mol and -16.2 kJ/mol, respectively, which are consistent with the experiential results；hydrophobic and electrostatic interaction both are important concerns about toxin blocking ion channels：the interactions of m3-HwTx-IV-hNaV1.7 are enhanced by mutating several residues in HwTx-IV. In comparison with the other peptide toxins of NaSpTx-F1, it is found that NaSpTx-F1 also had a similar binding characteristic. Combined above results, it was concluded that K32, W30 and F6, K7 and A8 in N-groove were critical for the interaction strength；G1, L3, G4, I5 in the N terminus and W33, I35 in the C terminus together can determine the peptide binding orientation relative to the channel and ultimately altered the inhibitory effect. This conclusion would be useful for designing high potency peptide inhibitor for hNav1.7. Communicated by Ramaswamy H. Sarma
Cosmological Evolution of Black Holes in Brans-Dicke Gravity
Creators: name: Sakai, Nobuyuki
name: Barrow, John D.
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a modified ``Swiss cheese'' model in Brans-Dicke theory, and use it to discuss the evolution of black holes in an expanding universe. We define the black hole radius by the Misner-Sharp mass and find their exact time evolutions for dust and vacuum universes of all curvatures.
description: 6 pages, no figure, discussions modified, to appear in Class. Quantum Grav
Interactive Vocabulary Learning Application for Children with Autism Spectrum Disorder: A Participatory Design Study
Creators: name: Hassan, Asma Osman
Publisher: name: Manara - Qatar Research Repository
Year: 2025
Subjects: classificationCode: 40
subject: Engineering

description: Autism Spectrum Disorder (ASD) is affecting 1 in 54 children worldwide according to estimates of CDC’s Autism and Developmental Disabilities Monitoring Network (ADDMN) (CDC, 2020) and 1 in 89 in the state of Qatar (Alshaban et al., 2019). This percentage is increasing the challenges exerted on the education sector for teachers aiming to meet learning milestones. Children with ASD are presented with challenges such as relating concepts to their meaning and generalization challenges. Research related to technology-based interventions, particularly computer-based interventions (CBI) targeting language, is growing in the field of human computing interaction. Therefore, the aim of this project is to provide an interactive application targeting vocabulary learning using augmented reality (AR) for children with ASD. The application is both in Arabic and in English language focusing on vocabulary building using 3D model representation of the meaning for the designated vocab. Requirement gathering, low-fidelity prototype testing and high-fidelity prototype testing stages were performed to deploy the necessary requirements into the interactive platform. Interviews and focus groups have been conducted to collect requirements and evaluate different features in the application. Thematic analysis (TA) was used to synthesize and make meaningful outcomes. Our findings reveal that there is a clear demand for technologies in the Arabic language. A user-friendly interface keeping in consideration the cognitive and physical motor abilities of the child across the spectrum is essential. An autistic friendly presentation with interactive features is suggested to give a meaningful learning experience for a child with ASD.
On the relation between a zero-point-field-induced inertial effect and the Einstein-de Broglie formula
Creators: name: Haisch, Bernard
name: Rueda, Alfonso
Publisher: name: arXiv
Year: 1999
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It has been proposed that the scattering of electromagnetic zero-point radiation by accelerating objects results in a reaction force that may account, at least in part, for inertia [1,2,3]. This arises because of asymmetries in the electromagnetic zero-point field (ZPF) or electromagnetic quantum vacuum as perceived from an accelerating reference frame. In such a frame, the Poynting vector and momentum flux of the ZPF become non-zero. If one assumes that scattering of the ZPF radiation takes place at the level of quarks and electrons constituting matter, then it is possible for both Newton's equation of motion, ${\bf f}=m{\bf a}$, and its relativistic covariant generalization, ${\cal F}=d{\cal P}/dτ$, to be obtained as a consequence of the non-zero ZPF momentum flux. We now conjecture that this scattering must take place at the Compton frequency of a particle, and that this interpretation of mass leads directly to the de Broglie relation characterizing the wave nature of that particle in motion, $λ_B=h/p$. This suggests a perspective on a connection between electrodynamics and the quantum wave nature of matter. Attempts to extend this perspective to other aspects of the vacuum are left for future consideration.
description: Typo in eqn. (5) corrected. Does not change result
Super-geometric electron focusing on the hexagonal Fermi surface of PdCoO$_2$
Creators: name: Bachmann, Maja D.
name: Sharpe, Aaron L.
name: Barnard, Arthur W.
name: Putzke, Carsten
name: König, Markus
name: Khim, Seunghyun
name: Goldhaber-Gordon, David
name: Mackenzie, Andrew P.
name: Moll, Philip J. W.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Geometric electron optics may be implemented in solid state when transport is ballistic on the length scale of a device. Currently, this is realized mainly in 2D materials characterized by circular Fermi surfaces. Here we demonstrate that the nearly perfectly hexagonal Fermi surface of PdCoO2 gives rise to highly directional ballistic transport. We probe this directional ballistic regime in a single crystal of PdCoO2 by use of focused ion beam (FIB) micro-machining, defining crystalline ballistic circuits with features as small as 250nm. The peculiar hexagonal Fermi surface naturally leads to electron self-focusing effects in a magnetic field, well below the geometric limit associated with a circular Fermi surface. This super-geometric focusing can be quantitatively predicted for arbitrary device geometry, based on the hexagonal cyclotron orbits appearing in this material. These results suggest a novel class of ballistic electronic devices exploiting the unique transport characteristics of strongly faceted Fermi surfaces.
Additional file 11 of Analysis of tumor environmental response and oncogenic pathway activation identifies distinct basal and luminal features in HER2-related breast tumor subtypes
Creators: name: Gatza, Michael L
name: Hsiu-Ni Kung
name: Blackwell, Kimberly L
name: Dewhirst, Mark W
name: Marks, Jeffrey R
name: Jen-Tsan Chi
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Authors’ original file for figure 7
Catholics and Politics in New South Wales in the 1840s
Creators: name: Chandler, Paul Anthony
Publisher: name: Zenodo
Year: 2019
Subjects: Duncan, William Augustine, 1811-1885
D'Arcy, Michael, 1812-1880
Catholic Church -- Australia -- History

description: The two Catholic newspapers in New South Wales in the 1840s, edited by W.A. Duncan and Michael D'Arcy, took a distinctive position on the struggle over the squatting system and pastoral monopoly of land, reflecting a Utopian commitment to a future Australia based on small farms and the rights of working men to employment and participation in political life.
description: B.A. (Hons) thesis, Macquarie University, 1980
A recipe for black box functors
Creators: name: Fong, Brendan
name: Sarazola, Maru
Publisher: name: arXiv
Year: 2018
Subjects: subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 18C10, 18D10

description: The task of constructing compositional semantics for network-style diagrammatic languages, such as electrical circuits or chemical reaction networks, has been dubbed the black boxing problem, as it gives semantics that describes the properties of each network that can be observed externally, by composition, while discarding the internal structure. One way to solve these problems is to formalise the diagrams and their semantics using hypergraph categories, with semantic interpretation a hypergraph functor, called the black box functor, between them. Reviewing a principled method for constructing hypergraph categories and functors, known as decorated corelations, in this paper we construct a category of \emph{decorating data}, and show that the decorated corelations method is itself functorial, with a universal property characterised by a left Kan extension. We then argue that the category of decorating data is a good setting in which to construct any hypergraph functor, giving a new construction of Baez and Pollard's black box functor for reaction networks as an example.
description: 32 pages + 2 page appendix
Additional file 1: of Towards appropriate information provision for and decision-making with patients with limited health literacy in hospital-based palliative care in Western countries: a scoping review into available communication strategies and tools for healthcare providers
Creators: name: Noordman, Janneke
name: Vliet, Liesbeth
name: Kaunang, Menno
name: Muijsenbergh, Maria
name: Gudule Boland
name: Dulmen, Sandra
Publisher: name: figshare
Year: 2019
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy

description: Search strategies for databases PubMed, Embase, CINAHL, and PsycINFO. This file contains the search strategies for databases PubMed, Embase, CINAHL, and PsycINFO. (DOCX 20 kb)
Correlation Analysis between ResearchGate Indicators and Academic Times Ranking in the Field of Computer Sciences
Creators: name: Tavosi, Maryam
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 350612
subject: Social marketing
classificationCode: 461010
subject: Social and community informatics

description: Background and aim: Nowadays, with the increasing use of Web 2 capabilities, the scientific evaluation of researchers has been considered using altmetrics. The aim of this study was to analyze the correlation between ResearchGate (RG) indicators and academic Times ranking among prominent faculty members in the field of computer sciences affiliated with the top scientific centers (Times) in 2020. Materials and methods: The present study was conducted using the scientometric method and Altmetrics approach. The study population consisted of 100 faculty members affiliated with the top ten academic centers according to the Times Higher Education World University Rankings 2020 in the field of computer sciences at least with degree of associate professor, who were selected by stratified random sampling. Data were analyzed using SPSS 22. Findings: More than half of the population (100 faculty members) had no presence on the RG network. For 47 registered individuals, no significant relationship was found between the five indicators on RG of "RG score", "Citations", "Research Interest", "Research Items" and "Followers" with "Times Ranking" (P -Value> 0.05 in all of five). There was a significant relationship between the "reads" indicator and "Times ranking" in the form of mean inverse correlation (P -value = 0.04, Spearman correlation coefficient= -0.6). Conclusion: The Times' top international computer science researchers with the degrees of associate professor and higher had no more active presence on the RG network. In addition, no significant correlation was observed between "Times Rank" and RG indicators in their activities, except for the "reads".
Parametric Amplification of Density Perturbation in the Oscillating inflation
Creators: name: Taruya, A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the adiabatic density perturbation in the {\it oscillating inflation}, proposed by Damour and Mukhanov. The recent study of the cosmological perturbation during reheating shows that the adiabatic fluctuation behaves like as the perfect fluid and no significant amplification occurs on super-horizon scales. In the oscillating inflation, however, the accelerated expansion takes place during the oscillating stage and there might be a possibility that the parametric amplification on small scales affects the adiabatic long-wavelength perturbation. We analytically show that the density perturbation neglecting the metric perturbation can be amplified by the parametric resonance and the instability band becomes very broad during the oscillating inflation. We examined this issue by solving the evolution equation for perturbation numerically. We found that the parametric resonance is strongly suppressed for the long wave modes comparable to the Hubble horizon. The result indicates that the metric perturbation plays a crucial role for the evolution of scalar field perturbation. Therefore, in the single field case, there would be no significant imprint of the oscillating inflation on the primordial spectrum of the adiabatic perturbation. However, it could be expected that the oscillating inflation in the multi-field system gives the enormous amplification on large scales, which may lead to the production of the primordial black holes.
description: 11 pages, 5 Encapsulated postscript figures, RevTeX, submitted to Phys.Rev.D
Open quantum system in external magnetic field within non-Markovian quantum Langevin approach
Creators: name: Abdurakhmanov, I. B.
name: Kanokov, Z.
name: Adamian, G. G.
name: Antonenko, N. V.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The non-Markovian dynamics of a charged particle linearly coupled to a neutral bosonic heat bath is investigated in an external uniform magnetic field. The analytical expressions for the time-dependent and asymptotic friction and diffusion coefficients, cyclotron frequencies, variances of the coordinate and momentum, and orbital magnetic moments are derived. The role of magnetic field in the dissipation and diffusion processes is illustrated by several examples in the low- and high-temperature regimes. The localization phenomenon for a charged particle is observed. The orbital diamagnetism of quantum system in a dissipative environment is studied. The quantization conditions are found for the angular momentum.
description: 31 pages, 8 figures. arXiv admin note: text overlap with arXiv:1806.10602, arXiv:1806.01685
Data and Software : Prediction of Energetic Electrons in the Inner Radiation Belt and Slot Region with A Double-layer LSTM Neural Network Model
Creators: name: Yang, Ling
name: Li, Liuyuan
name: CAO, Jinbin
Publisher: name: Zenodo
Year: 2024
Subjects: electron flux
prediction model
LSTM neural network
inner radiation belt
slot region

description: The dataset include all data of manuscript titled "Prediction of Energetic Electrons in the Inner Radiation Belt and Slot Region with A Double-layer LSTM Neural Network Model".

 

1. "Flux_data(RBSP-A-MagEIS)_MultiPA.mat" includes electron flux and location data at L ≤ 4 from the RBSP-A (Van Allen Probe A) and solar or geomagnetic indexs from OMNI dataset (https://cdaweb.gsfc.nasa.gov/).

2. "Standardized_parameter_*keV.mat" includes standardized parameters for data preprocessing.

3. "Data_Test__E*_PASUM_or.mat" and "UT_Train_and_Test*.mat" are the data of prediction model testing.

4. "Model_code" file  is the code for the prediction model, and the main function is "LSTM_logFLux_RBSP.m".The subfunctions used are "caculate_integralFlux_PA.m", "odc_util.m, and "Test_and_Pred_net.m".

5. "Model_net" file includes the trained neural networks for different energy channels, named "Net_E*_PASUM0.mat".

6. "Data_of_Figure_*.mat" corresponds to Figures in "Prediction of Energetic Electrons in the Inner Radiation Belt and Slot Region with A Double-layer LSTM Neural Network Model".

7. "Data_and_Net*_ERG_#keV.mat" is the comparation between model predicted flux and Arase(ERG) observed flux. Here, "*" refers to the energy channel of our model, "#" refers to the energy channel of Arase(ERG) satellite.
Additional file 1 of Analysis of tumor environmental response and oncogenic pathway activation identifies distinct basal and luminal features in HER2-related breast tumor subtypes
Creators: name: Gatza, Michael L
name: Hsiu-Ni Kung
name: Blackwell, Kimberly L
name: Dewhirst, Mark W
name: Marks, Jeffrey R
name: Jen-Tsan Chi
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional File 1: Supplementary methods. This document provides additional information about the methods used in the manuscript. (PDF 1 MB)
Class-Based Interference Management in Wireless Networks
Creators: name: Hossain, Mohammad Arif
name: Chowdhury, Mostafa Zaman
name: Ahmed, Shakil
name: Jang, Yeong Min
Publisher: name: arXiv
Year: 2018
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Technological advancement has brought revolutionary change in the converged wireless networks. Due to the existence of different types of traffic, provisioning of Quality of Service (QoS) becomes a challenge in the wireless networks. In case of a congested network, resource allocation has emerged as an effective way to provide the excessive users with desirable QoS. Since QoS for non-real-time traffic are not as strict as for real-time traffic, the unoccupied channels of the adjacent cells can be assigned to the non-real-time traffic to retain QoS for real-time traffic. This results in the intensified bandwidth utilization as well as less interference for the real-time traffic. In this paper, we propose an effective radio resource management scheme that relies on the dynamically assigned bandwidth allocation process. In case of interference management, we classify the traffic into real-time traffic and non-real-time traffic and give priority to the real-time traffic. According to our scheme, the real-time traffic among the excessive number of users are reassigned to the original channels which have been occupied by non-real-time traffic and the non-real-time traffic are allocated to the assigned channels of those real-time traffic. The architecture allows improved signal to interference plus noise ratio (SINR) for real-time traffic along with intensification in the bandwidth utilization of the network. Besides, the increased system capacity and lower outage probability of the network bear the significance of the proposed scheme.
New variable stars in NGC 6652 and its background Sagittarius stream
Creators: name: Salinas, Ricardo
name: Vivas, A. Katherina
name: Ramos, Rodrigo Contreras
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We conducted a variable star search on the metal-rich Galactic globular cluster NGC 6652 using archival Gemini-S/GMOS data. We report the discovery of nine new variable stars in the NGC 6652 field, of which we classify six as eclipsing binaries and one as SX Phoenicis stars, leaving two variables without classification. Using proper motions from Gaia DR2 and HST, albeit with some uncertainties, we find that the cluster, the field, and the background Sagittarius stream, have 3 of these variables each. We also reassess the membership of known variables based on the Gaia proper motions, confirming the existence of one RR Lyrae star in the cluster.
description: AJ accepted
Anisotropic Homogeneous Turbulence: hierarchy and intermittency of scaling exponents in the anisotropic sectors
Creators: name: Biferale, Luca
name: Toschi, Federico
Publisher: name: arXiv
Year: 2000
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We present the first measurements of anisotropic statistical fluctuations in perfectly homogeneous turbulent flows. We address both problems of intermittency in anisotropic sectors and hierarchical ordering of anisotropies on a direct numerical simulation of a three dimensional random Kolmogorov flow. We achieved an homogeneous and anisotropic statistical ensemble by randomly shifting the forcing phases. We observe high intermittency as a function of the order of the velocity correlation within each fixed anisotropic sector and a hierarchical organization of scaling exponents at fixed order of the velocity correlation at changing the anisotropic sector.
description: 6 pages, 3 eps figures
Identity types and weak factorization systems in Cauchy complete categories
Creators: name: North, Paige Randall
Publisher: name: arXiv
Year: 2019
Subjects: subject: Category Theory (math.CT)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: It has been known that categorical interpretations of dependent type theory with Sigma- and Id-types induce weak factorization systems. When one has a weak factorization system (L, R) on a category C in hand, it is then natural to ask whether or not (L, R) harbors an interpretation of dependent type theory with Sigma- and Id- (and possibly Pi-) types. Using the framework of display map categories to phrase this question more precisely, one would ask whether or not there exists a class D of morphisms of C such that the retract closure of D is the class R and the pair (C, D) forms a display map category modeling Sigma- and Id- (and possibly Pi-) types. In this paper, we show, with the hypothesis that C is Cauchy complete, that there exists such a class D if and only if (C,R) itself forms a display map category modeling Sigma- and Id- (and possibly Pi-) types. Thus, we reduce the search space of our original question from a potentially proper class to a singleton.
description: 14 pages
Bertotti-Robinson type solutions to Dilaton-Axion Gravity
Creators: name: Clement, Gerard
name: Gal'tsov, Dmitri
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a new solution to dilaton-axion gravity which looks like a rotating Bertotti-Robinson (BR) Universe. It is supported by an homogeneous Maxwell field and a linear axion and can be obtained as a near-horizon limit of extremal rotating dilaton-axion black holes. It has the isometry $SL(2,R)\times U(1)$ where U(1) is the remnant of the SO(3) symmetry of BR broken by rotation, while $SL(2,R)$ corresponds to the $AdS_2$ sector which no longer factors out of the full spacetime. Alternatively our solution can be obtained from the D=5 vacuum counterpart to the dyonic BR with equal electric and magnetic field strengths. The derivation amounts to smearing it in D=6 and then reducing to D=4 with dualization of one Kaluza-Klein two-form in D=5 to produce an axion. Using a similar dualization procedure, the rotating BR solution is uplifted to D=11 supergravity. We show that it breaks all supersymmetries of N=4 supergravity in D=4, and that its higher dimensional embeddings are not supersymmetric either. But, hopefully it may provide a new arena for corformal mechanics and holography. Applying a complex coordinate transformation we also derive a BR solution endowed with a NUT parameter.
description: 21 pages
Minimal Effective Gibbs Ansatz (MEGA): A simple protocol for extracting an accurate thermal representation for quantum simulation
Creators: name: Cohn, Jeffrey
name: Najafi, Khadijeh Sona
name: Yang, Forest
name: Jones, Barbara
name: Freericks, James K.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum Gibbs state sampling algorithms generally suffer from either scaling exponentially with system size or requiring specific knowledge of spectral properties \textit{a priori}. Also, these algorithms require a large overhead of bath or scratch/ancilla qubits. We propose a method, termed the minimal effective Gibbs ansatz (MEGA), which uses a quantum computer to determine a minimal ensemble of pure states that accurately reproduce thermal averages of typical observables. This technique employs properties of correlation functions that can be split into a lesser and greater part; here, we primarily focus on single-particle Green's functions. When properly measured, these correlation functions provide a simple test to indicate how close a given pure state or ensemble of pure states are to providing accurate thermal expectation values. Further, we show that when properties such as the eigenstate thermalization hypothesis hold, this approach leads to accurate results with a sparse ensemble of pure states; sometimes only one suffices. We illustrate the ansatz using exact diagonalization simulations on small clusters for the Fermi-Hubbard and Hubbard-like models. Even if MEGA becomes as computationally complex as other Gibbs state samplers, it still gains an advantage due to its ease of implementation without any \textit{a priori} information about the Hamiltonian and in the efficient allocation of available qubits by eliminating bath qubits and using a minimal number of ancilla.
description: 12 pages