cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantitative Evaluation of Hardware Binary Stochastic Neurons
Creators: name: Hassan, Orchi
name: Datta, Supriyo
name: Camsari, Kerem Y.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Emerging Technologies (cs.ET)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Recently there has been increasing activity to build dedicated Ising Machines to accelerate the solution of combinatorial optimization problems by expressing these problems as a ground-state search of the Ising model. A common theme of such Ising Machines is to tailor the physics of underlying hardware to the mathematics of the Ising model to improve some aspect of performance that is measured in speed to solution, energy consumption per solution or area footprint of the adopted hardware. One such approach to build an Ising spin, or a binary stochastic neuron (BSN), is a compact mixed-signal unit based on a low-barrier nanomagnet based design that uses a single magnetic tunnel junction (MTJ) and three transistors (3T-1MTJ) where the MTJ functions as a stochastic resistor (1SR). Such a compact unit can drastically reduce the area footprint of BSNs while promising massive scalability by leveraging the existing Magnetic RAM (MRAM) technology that has integrated 1T-1MTJ cells in ~Gbit densities. The 3T-1SR design however can be realized using different materials or devices that provide naturally fluctuating resistances. Extending previous work, we evaluate hardware BSNs from this general perspective by classifying necessary and sufficient conditions to design a fast and energy-efficient BSN that can be used in scaled Ising Machine implementations. We connect our device analysis to systems-level metrics by emphasizing hardware-independent figures-of-merit such as flips per second and dissipated energy per random bit that can be used to classify any Ising Machine.
Non-classical properties of quantum wave packets propagating in a Kerr-like medium
Creators: name: Sudheesh, C.
name: Lakshmibala, S.
name: Balakrishnan, V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate non-classical effects such as fractional revivals, squeezing and higher-order squeezing of photon-added coherent states propagating through a Kerr-like medium.The Wigner functions corresponding to these states at the instants of fractional revivals are obtained, and the extent of non-classicality quantified.
description: 8 pages, 10 figures
A deeper understanding of white dwarf interiors
Creators: name: Metcalfe, Travis S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A detailed record of the physical processes that operate during post-main-sequence evolution is contained in the internal chemical structure of white dwarfs. Global pulsations allow us to probe the stellar interior through asteroseismology, revealing the signatures of prior nuclear burning, mixing, and diffusion in these stars. I review the rapid evolution of structural models for helium-atmosphere variable (DBV) white dwarfs over the past five years, and I present a new series of model-fits using recent observations to illustrate the relative importance of various interior structures. By incorporating physically motivated C/O profiles into double-layered envelope models for the first time, I finally identify an optimal asteroseismic model that agrees with both diffusion theory and the expected nuclear burning history of the progenitor. I discuss the implications of this fundamental result, and I evaluate the prospects for continued progress in the future.
description: 5 pages, 2 figures, 1 table, Accepted for MNRAS Letters
Text: The Lucitantes
Creators: name: Umenda, Juan
name: Dabkowski, Maksymilian
name: Quenamá, Leidy
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: con

description: Before, in the community of Sinangoé, there was only one Lucitante family. They married among themselves until the Catholics came and changed their names to e.g. Umenda, so that they could marry within family.
Critical Behavior and Universal Signature of an Axion Insulator State
Creators: name: Li, Hailong
name: Jiang, Hua
name: Chen, Chui-Zhen
name: Xie, X. C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recently, the search for an axion insulator state in the ferromagnet-3D topological insulator (TI) heterostructure and $\mathrm{MnBi_2Te_4}$ has attracted intensive interest. However, its detection remains difficult in experiments. We systematically investigate the disorder-induced phase transition of the axion insulator state in a 3D TI with antiparallel magnetization alignment surfaces. It is found that there exists a 2D disorder-induced phase transition which shares the same universality class with the quantum Hall plateau to plateau transition. Then, we provide a phenomenological theory which maps the random mass Dirac Hamiltonian of the axion insulator state into the Chalker-Coddington network model. Therefore, we propose to probe the axion insulator state by investigating the universal signature of such a phase transition in the ferromagnet-3D TI heterostructure and $\mathrm{MnBi_2Te_4}$. Our findings not only show a global phase diagram of the axion insulator state, but also provide a new experimental routine to probe it.
Non-Pertubative Quantum Corrections to a Born-Infeld Black Hole and its Information Geometry
Creators: name: Pourhassan, Behnam
name: Dehghani, Mohsen
name: Faizal, Mir
name: Dey, Sanjib
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the non-perturbative quantum corrections to a Born-Infeld black hole in a spherical cavity. These quantum corrections produce a non-trivial short distances modification to the relation between the entropy and area of this black hole. The non-perturbative quantum correction appears as an exponential term in the black hole entropy. This in turn modifies the thermodynamics of a given system, for example reduced value of the Helmholtz free energy. Moreover, the first law of black hole thermodynamics modified due to quantum corrections. We also investigate the effect of such non-perturbative corrections on the information geometry of this system. This is done using some famous information metrics.
description: 17 pages, 15 figures. Accepted in Class. Quantum Grav
Wrapping interactions and the genus expansion of the 2-point function of composite operators
Creators: name: Sieg, Christoph
name: Torrielli, Alessandro
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We perform a systematic analysis of wrapping interactions for a general class of theories with color degrees of freedom, including N=4 SYM. Wrapping interactions arise in the genus expansion of the 2-point function of composite operators as finite size effects that start to appear at a certain order in the coupling constant at which the range of the interaction is equal to the length of the operators. We analyze in detail the relevant genus expansions, and introduce a strategy to single out the wrapping contributions, based on adding spectator fields. We use a toy model to demonstrate our procedure, performing all computations explicitly. Although completely general, our treatment should be particularly useful for applications to the recent problem of wrapping contributions in some checks of the AdS/CFT correspondence.
description: 41 pages, LaTeX, 12 figures, minor changes, final version in NPB
A search for neutron to mirror-neutron oscillations
Creators: name: Abel, C.
name: Ayres, N. J.
name: Ban, G.
name: Bison, G.
name: Bodek, K.
name: Bondar, V.
name: Chanel, E.
name: Chiu, P. -J.
name: Crawford, C.
name: Daum, M.
name: Dinani, R. T.
name: Emmenegger, S.
name: Flaux, P.
name: Ferraris-Bouchez, L.
name: Griffith, W. C.
name: Grujic, Z. D.
name: Hild, N.
name: Kirch, K.
name: Koch, H. -C.
name: Koss, P. A.
name: Kozela, A.
name: Krempel, J.
name: Lauss, B.
name: Lefort, T.
name: Leredde, A.
name: Mohanmurthy, P.
name: Naviliat-Cuncic, O.
name: Pais, D.
name: Piegsa, F. M.
name: Pignol, G.
name: Rawlik, M.
name: Rebreyend, D.
name: Rienaecker, I.
name: Ries, D.
name: Roccia, S.
name: Rozpedzik, D.
name: Schmidt-Wellenburg, P.
name: Severijns, N.
name: Thorne, J.
name: Weis, A.
name: Wursten, E.
name: Zejma, J.
name: Zsigmond, G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It has been proposed that there could be a mirror copy of the standard model particles, restoring the parity symmetry in the weak interaction on the global level. Oscillations between a neutral standard model particle, such as the neutron, and its mirror counterpart could potentially answer various standing issues in physics today. Astrophysical studies and terrestrial experiments led by ultracold neutron storage measurements have investigated neutron to mirror-neutron oscillations and imposed constraints on the theoretical parameters. Recently, further analysis of these ultracold neutron storage experiments has yielded statistically significant anomalous signals that may be interpreted as neutron to mirror-neutron oscillations, assuming nonzero mirror magnetic fields. The neutron electric dipole moment collaboration performed a dedicated search at the Paul Scherrer Institute and found no evidence of neutron to mirror-neutron oscillations. Thereby, the following new lower limits on the oscillation time were obtained: $τ_{nn'} > 352~$s at $B'=0$ (95% C.L.), $τ_{nn'} > 6~\text{s}$ for all $0.4~μ\text{T}9~\text{s}$ for all $5.0~μ\text{T}
description: Submitted to Physics Letters B, 9 pages, 3 figures
Fast imaging of multimode transverse-spectral correlations for twin photons
Creators: name: Lipka, Michał
name: Parniak, Michał
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Hyperentangled photonic states - exhibiting nonclassical correlations in several degrees of freedom - offer improved performance of quantum optical communication and computation schemes. Experimentally, a hyperentanglement of transverse-wavevector and spectral modes can be obtained in a straightforward way with multimode parametric single-photon sources. Nevertheless, experimental characterization of such states remains challenging. Not only single-photon detection with high spatial resolution - a single-photon camera - is required, but also a suitable mode-converter to observe the spectral/temporal degree of freedom. We experimentally demonstrate a measurement of a full 4-dimensional transverse-wavevector-spectral correlations between pairs of photons produced in the non-collinear spontaneous parametric downconversion (SPDC). Utilization of a custom ultra-fast single-photon camera provides high resolution and a short measurement time.
description: 7 pages, 3 figures
Generalized diffusion equation
Creators: name: Boon, Jean Pierre
name: Lutsko, James F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Modern analyses of diffusion processes have proposed nonlinear versions of the Fokker-Planck equation to account for non-classical diffusion. These nonlinear equations are usually constructed on a phenomenological basis. Here we introduce a nonlinear transformation by defining the $q$-generating function which, when applied to the intermediate scattering function of classical statistical mechanics, yields, in a mathematically systematic derivation, a generalized form of the advection-diffusion equation in Fourier space. Its solutions are discussed and suggest that the $q$-generating function approach should be a useful tool to generalize classical diffusive transport formulations.
description: 5 pages with 3 figures
Abstract crystals for quantum Borcherds-Bozec algebras
Creators: name: Fan, Zhaobing
name: Kang, Seok-Jin
name: Kim, Young Rock
name: Tong, Bolun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17B37, 17B67, 16G20

description: In this paper, we develop the theory of abstract crystals for quantum Borcherds-Bozec algebras. Our construction is different from the one given by Bozec. We further prove the crystal embedding theorem and provide a characterization of ${B}(\infty)$ and ${B}(λ)$ as its application, where ${B}(\infty)$ and ${B}(λ)$ are the crystals of the negative half part of the quantum Borcherds-Bozec algebra $U_q(\mathfrak g)$ and its irreducible highest weight module $V(λ)$, respectively.
description: 31 pages
What you should know about data policies in economic and social science journals
Creators: name: Seyffertitz, Thomas
Publisher: name: Zenodo
Year: 2024

description: When submitting a research paper to a journal, it is increasingly required that the underlying data (i.e., research data) be provided or referenced. Especially in top journals, this has become mandatory in recent years. Consequently, it is essential for authors to familiarise themselves with the data guidelines of the respective journal. In this webinar, we will use some examples of data guidelines from various publishers and journals to show you what you should look out for before submitting a scientific article. First, we will show where you might find the respective data guidelines. We will then explain some of the features of such data guidelines using examples and introduce you to specific elements in individual journals: When and in what form should data be provided? What can I do if sensitive or licensed data is used in the work? To this end, we have analysed relevant guidelines from renowned economic and social science journals and compiled the most important findings. This should help to raise awareness of the journals' data guidelines and help authors to recognise potential pitfalls.

 

Keywords: research data; data policies; research data management; scholarly journals, economics; social sciences
Dark Matter and Baryon Asymmetry of the Universe in Large-Cutoff Supergravity
Creators: name: Ibe, M.
name: Moroi, Takeo
name: Yanagida, T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a consistent scenario of the evolution of the universe based on the large cutoff supergravity (LCSUGRA) hypothesis of supersymmetry breaking, where the gravitino and sfermion become as heavy a $\sim O(1-10 {\rm TeV})$. With such a heavy gravitino, baryon asymmetry of the universe can be generated by the non-thermal leptogenesis via an inflaton decay without conflicting the serious gravitino problem. We also see that, in the LCSUGRA scenario, relic density of the lightest superparticle becomes consistent with the WMAP value of the dark matter density in the parameter region required for the successful non-thermal leptogenesis.
description: 13 pages, 2 figures
title:  Il soggetto e la storia. Forme di trascendenza soggettiva nel pensiero sartriano
Creators: name: De Cosmo  ,  Chiara
Publisher: name: Roma TrE-Press
Year: 2019

description: Scopo di questo intervento è di mettere in risalto l’originalità del marxismo sartriano e della sua analisi teorica della storia e della società quale peculiare intreccio di soggettività continuamente oggettivantesi. Si propone un percorso fra alcune posizioni de L’Essere e il nulla in merito alla costituzione del per sé, analizzando le sue forme di relazioni primarie con il mondo, con l’oggetto o l’in sé nel complesso dei suoi significati materiali e simbolici, e la prospettiva di stampo dialettico della Critique, in cui l’astrazione prodotta nel quadro dell’opera del 1943 si concretizza nella storia. Si mostra, infine, come sussistano delle omologie fra il per sé descritto ne L’Essere e il nulla quale dinamica di nullificazione, quindi di continua trascendenza e le strutture di soggettivazione collettive della Critica della ragion dialettica, che si presentano come totalizzazioni in corso, sempre aperte e implicate in una continua dinamica di trascendimento.
description: Studi Sartriani – Anno XIII – L’umana disumanità
Modeling and Directed Influence in Preschoolers (Eaton & Bernstein Ratner, 2013)
Creators: name: Eaton, Catherine Torrington
name: Ratner, Nan Bernstein
Publisher: name: ASHA journals
Year: 2021
Subjects: subject: 170204 Linguistic Processes (incl. Speech Production and Comprehension)
subject: FOS: Psychology

description: Purpose: To explore the effect of modeling and explicit elicitation of slow and accurately produced speech in typically developing preschool children. Optional phonological reductions (e.g., deleted final stops) and changes in speech rate were examined in response to an adult conversational speaker’s speech style.Method: Forty 3- and 4-year-olds (20 each) were tested in 3 tasks: (a) immediate repetition of a model, (b) spontaneous speech, and (c) directed speech style (cueing to correct “sloppy” speech). In Task 1, half of each group heard fast and hypoarticulated versus slow and hyperarticulated speech for a between-group response-to-model comparison. Tasks 2 and 3 were compared within subjects.Results: Task 1 demonstrated that both age groups aligned with the speaker’s rate and phonological variants usage when repeating a model. Tasks 2 and 3 revealed that 4-year-olds varied phonological reduction patterns according to the task demands, whereas 3-year-olds maintained consistent patterns of usage. In addition, neither group successfully realigned with the rapid speech rate in Task 3.Conclusions: These results contribute to an evidence base supporting the practice of modeling slow and clear speech to children with various production disorders. Further research is needed to explore the cognitive–linguistic processes underlying alignment before findings are applied to clinical populations.
Script Told by the Experimenter for the Spontaneous Speech Task (Task 2)
Creators: name: Eaton, Catherine Torrington
name: Ratner, Nan Bernstein
Publisher: name: ASHA journals
Year: 2021
Subjects: subject: 170204 Linguistic Processes (incl. Speech Production and Comprehension)
subject: FOS: Psychology

description: Purpose: To explore the effect of modeling and explicit elicitation of slow and accurately produced speech in typically developing preschool children. Optional phonological reductions (e.g., deleted final stops) and changes in speech rate were examined in response to an adult conversational speaker’s speech style.Method: Forty 3- and 4-year-olds (20 each) were tested in 3 tasks: (a) immediate repetition of a model, (b) spontaneous speech, and (c) directed speech style (cueing to correct “sloppy” speech). In Task 1, half of each group heard fast and hypoarticulated versus slow and hyperarticulated speech for a between-group response-to-model comparison. Tasks 2 and 3 were compared within subjects.Results: Task 1 demonstrated that both age groups aligned with the speaker’s rate and phonological variants usage when repeating a model. Tasks 2 and 3 revealed that 4-year-olds varied phonological reduction patterns according to the task demands, whereas 3-year-olds maintained consistent patterns of usage. In addition, neither group successfully realigned with the rapid speech rate in Task 3.Conclusions: These results contribute to an evidence base supporting the practice of modeling slow and clear speech to children with various production disorders. Further research is needed to explore the cognitive–linguistic processes underlying alignment before findings are applied to clinical populations.
Neutrino masses and gravitational wave background
Creators: name: Asaka, Takehiko
name: Okui, Hisashi
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the Standard Model with three right-handed neutrinos to generate tiny neutrino masses by the seesaw mechanism. Especially, we investigate the case when one right-handed neutrino has the suppressed Yukawa coupling constants. Such a particle has a long lifetime and can produce an additional entropy by the decay. It is then discussed the impact of the entropy production on the gravitational wave background originated in the primordial inflation. We show that the mass and the coupling constants of the long-lived right-handed neutrino can be probed by the distortion of the gravitational wave spectrum, leading to the information of the mass of the lightest active neutrino.
description: 11 pages, 7 figures
Study of the structures and interactions of components in 2-oxoglutarate dehydrogenase complex and 2-oxoadipate dehydrogenase complex
Creators: name: Zhang, Xu
Publisher: name: No Publisher Supplied
Year: 2021

description: Multienzyme complexes are assemblies containing several copies of one or several enzymes, and they generally carry out sequential catalytic transformations. Multienzyme complexes are essential for the living organisms, therefore deciphering how the components behave in isolation, but also how they interact with each other is critical for understanding the functions of enzyme complexes. The 2-oxoglutarate (OG) dehydrogenase complex (OGDHc) is a central enzyme in all forms of aerobic metabolism catalyzing the oxidative decarboxylation of OG, generating succinyl-CoA and NADH. The 2-oxoadipate dehydrogenase complex (OADHc) is a novel multienzyme complex functioning on the final degradation pathway of L-lysine, L-hydroxylysine and L-tryptophan. Many findings have suggested interesting similarities and differences between these two enzyme complexes, especially the unprecedented sharing of the dihydrolipamide acyltransferase component. In this thesis, hydrogen-deuterium exchange mass spectrometry (HDX-MS) and chemical cross-linking mass spectrometry (CL-MS), along with other biochemical methods and computational modeling, were employed to study the assembly of human OGDHc. In addition, studies were also carried out to investigate the functional and structural consequences of the mutation on the DHTKD1 gene encoding the 2-oxoadipate dehydrogenase. Moreover, HDX-MS was used to study the conformational changes induced by substitution of active center histidines in E. coli 1-deoxy-D-xylulose 5-phosphate (DXP) synthase, a thiamin diphosphate dependent enzyme.
What you should know about data policies in economic and social science journals
Creators: name: Seyffertitz, Thomas
Publisher: name: Zenodo
Year: 2023

description: When submitting a research paper to a journal, it is increasingly required that the underlying data (i.e., research data) be provided or referenced. Especially in top journals, this has become mandatory in recent years. Consequently, it is essential for authors to familiarise themselves with the data guidelines of the respective journal. In this webinar, we will use some examples of data guidelines from various publishers and journals to show you what you should look out for before submitting a scientific article. First, we will show where you might find the respective data guidelines. We will then explain some of the features of such data guidelines using examples and introduce you to specific elements in individual journals: When and in what form should data be provided? What can I do if sensitive or licensed data is used in the work? To this end, we have analysed relevant guidelines from renowned economic and social science journals and compiled the most important findings. This should help to raise awareness of the journals' data guidelines and help authors to recognise potential pitfalls.

 

Keywords: research data; data policies; research data management; scholarly journals, economics; social sciences
Asymptotic behavior of nucleon electromagnetic form factors in time-like region
Creators: name: Tomasi-Gustafsson, E.
name: Gakh, G. I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the asymptotic behavior of the ratio of Pauli and Dirac electromagnetic nucleon form factors, $F_2/F_1$, in time-like region for different parametrizations built for the space-like region. We investigate how fast the ratio $F_2/F_1$ approaches the asymptotic limits according to the Phragmèn-Lindelöf theorem. We show that the QCD-inspired logarithmic behavior of this ratio results in very far asymptotics, experimentally unachievable. This is also confirmed by the normal component of the nucleon polarization, $P_y$, in $e^++e^-\to N+\bar{N}$ (in collisions of unpolarized leptons), which is a very interesting observable, with respect to this theorem. Finally we observe that the 1/Q parametrization of $F_2/F_1$ contradicts this theorem.
description: 9 pages, 1 figure
Advice concerning the public health risks associated with avian influenza virus in mechanically separated poultry meat
Creators: name: Office for Risk Assessment & Research, Netherlands Food and Consumer Product Safety Authority
Publisher: name: Zenodo
Year: 2021
Subjects: subject: avian influenza virus
subject: public health risks
subject: poultry meat
subject: http://aims.fao.org/aos/agrovoc/c_16428
subject: http://id.agrisemantics.org/gacs/C7054

description: On 25 November 2020 the Netherlands Food and Consumer Product Safety Authority (NVWA) received a notification from Wageningen Bioveterinary Research (WBVR) regarding a batch of mechanically separated chicken meat suspected of being contaminated with avian influenza virus. The batch had been produced by a Dutch meat processing company from raw materials that originated from several European countries. The virus was subsequently typed as HPAI H5N5. This prompted the Dutch Ministry of Health, Welfare and Sport to ask BuRO if the presence of avian influenza virus in poultry meat poses a risk for public health risk and if so, what mitigating measures can be taken to reduce the risk sufficiently. BuRO indicates that the demonstration of infectious avian influenza virus in mechanically separated chicken meat has to be regarded as an exceptional coincidence. In the European context, the public health hazard associated with the consumption of, or exposure to, poultry meat infected with infectious virus is currently deemed to be very small to negligible. Proper heating provided, meat products don’t lead to exposure of consumers to HPAI virus. Other than the standard recommendations regarding proper kitchen hygiene in the processing of poultry meat, the preparation of poultry meat and proper heating of poultry meat or poultry meat products, no additional mitigating measures are required.
description: NL; pdf; NVWAEFSAFocalPoint@nvwa.nl
Frequency shift in the oscillating cantilever-driven adiabatic reversals technique as a function of the spin location
Creators: name: Berman, G. P.
name: Borgonovi, F.
name: Tsifrinovich, V. I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The theory of the oscillating cantilever-driven adiabatic reversals (OSCAR) in magnetic resonance force microscopy (MRFM) is extended to describe the relation between an external magnetic field and a dipole magnetic field for an arbitrary location of the single spin. An analytical estimate for the OSCAR MRFM frequency shift is derived and shown to be in excellent agreement with numerical simulations. The dependence of the frequency shift on the position of the spin relative to the cantilever has characteristic maxima and minima which can be used to determine the spin location experimentally.
description: submitted to PRB
Text: Community history
Creators: name: Umenda, Juan
name: Dabkowski, Maksymilian
name: Quenamá, Leidy
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: con

description: Before, when the grandfathers lived in Singangoé, there were no Kichwas or colonists. When the colonists came, they exchanged gold for clothes. Traditional food, they used to eat without salt, they didn't have matches or clothes.
Magnetic outflows from turbulent accretion disks: I. Vertical structure & secular evolution
Creators: name: Jacquemin-Ide, J.
name: Lesur, G.
name: Ferreira, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Astrophysical disks are likely embedded in an ambient vertical magnetic field. This ambient field is known to drive magneto-rotational turbulence in the disk bulk but is also responsible for the launching of magnetized outflows at the origin of astrophysical jets. The vertical structure and long-term (secular) evolution of such a system lack quantitative predictions. It is nevertheless this secular evolution that is proposed to explain time variability in many accreting systems such as X-ray binaries. We compute and analyze global 3D ideal-MHD simulations of an accretion disk threaded by a large-scale magnetic field. We evaluate the role of the turbulent terms in the equilibrium of the system. We then compute the transport of mass, angular momentum, and magnetic fields in the disk to characterize its secular evolution. We perform a parameter survey to characterize the influence of disk properties on secular transport. We find that weakly magnetized disks drive jets that carry away a small fraction of the disk angular momentum. The mass-weighted accretion speed remains subsonic although, there is always an upper turbulent atmospheric region where transonic accretion takes place. We show that a strongly magnetized version of the magneto-rotational instability drives this turbulence. The disk structure is drastically different from the conventional hydrostatic picture. The magnetic field is always dragged inwards in the disk, at a velocity that increases with the disk magnetization. Beyond a threshold on the latter, the disk undergoes a profound radial readjustment. It leads to the formation of an inner accretion-ejection region with a supersonic mass-weighted accretion speed and where the magnetic field distribution becomes steady, near equipartition with the thermal pressure. This inner structure shares many properties with the Jet Emitting Disk model described by Ferreira (1997).
description: Paper accepted on A&A, November 30, 2020
L'Istoria dell'antica Grecia di William Robertson: alcune riflessioni su un'errata attribuzione
Creators: name: Castagnino, Alessia
Publisher: name: Università degli Studi di Torino - Dipartimento di Studi Storici
Year: 2013
Subjects: storiografia; traduzioni; William Robertson

description: Il breve saggio intende proporre alcune riflessioni sull'identità dell'autore della History of the Ancient Greece, contribuendo così a chiarire un equivoco che tutt'oggi permane tra alcuni studiosi. L'opera, realizzata dall'archivista William Robertson, venne tradotta in italiano con un discreto successo nell'Ottocento e attribuita al suo più celebre omonimo, lo storico edimburghese che fu tra i principali esponenti dell'Illuminismo scozzese. Attraverso la ricostruzione di momenti significativi del processo di ricezione e di adattamento del testo, verrà descritta la genesi dell'errata attribuzione, concentrando in particolar modo l'attenzione sul ruolo che gli stessi traduttori e stampatori ebbero nel creare, consapevolmente o meno, le condizioni per un consolidamento dell'errore negli studi italiani.

This paper aims to reflect about the identity of the History of Ancient Greece's author, in order to clarify a misunderstanding that today still exists among scholars. During the Nineteenth-Century this History, written by the Scottish Keeper of Record William Robertson, was translated into Italian, with a good success, and it was attributed to the famous historian William Robertson, one of the most important exponents of the Scottish Enlightenment. Through the reconstruction of some significant moments in the process of reception and adaptation of the text, I will describe the genesis of the incorrect attribution, focusing the attention on the role that translators and printers had to create, consciously or not, the conditions for the consolidation of misunderstanding.
description: HISTORIKA Studi di storia greca e romana, Vol 2 (2012)
Learning Kinematic Feasibility for Mobile Manipulation through Deep Reinforcement Learning
Creators: name: Honerkamp, Daniel
name: Welschehold, Tim
name: Valada, Abhinav
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Mobile manipulation tasks remain one of the critical challenges for the widespread adoption of autonomous robots in both service and industrial scenarios. While planning approaches are good at generating feasible whole-body robot trajectories, they struggle with dynamic environments as well as the incorporation of constraints given by the task and the environment. On the other hand, dynamic motion models in the action space struggle with generating kinematically feasible trajectories for mobile manipulation actions. We propose a deep reinforcement learning approach to learn feasible dynamic motions for a mobile base while the end-effector follows a trajectory in task space generated by an arbitrary system to fulfill the task at hand. This modular formulation has several benefits: it enables us to readily transform a broad range of end-effector motions into mobile applications, it allows us to use the kinematic feasibility of the end-effector trajectory as a dense reward signal and its modular formulation allows it to generalise to unseen end-effector motions at test time. We demonstrate the capabilities of our approach on multiple mobile robot platforms with different kinematic abilities and different types of wheeled platforms in extensive simulated as well as real-world experiments.
description: Accepted for publication in RA-L. Code and Models: http://rl.uni-freiburg.de/research/kinematic-feasibility-rl
Residual Energies after Slow Quantum Annealing
Creators: name: Suzuki, Sei
name: Okada, Masato
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Features of the residual energy after the quantum annealing are investigated. The quantum annealing method exploits quantum fluctuations to search the ground state of classical disordered Hamiltonian. If the quantum fluctuation is reduced sufficiently slowly and linearly by the time, the residual energy after the quantum annealing falls as the inverse square of the annealing time. We show this feature of the residual energy by numerical calculations for small-sized systems and derive it on the basis of the quantum adiabatic theorem.
description: 4 pages, 2 figures
title:  Disumano, inumano e postumano. Alcune riflessioni tra J.-P. Sartre e H. Arendt
Creators: name: Meletti Bertolini  ,  Mara
Publisher: name: Roma TrE-Press
Year: 2019

description: Il tema della disumanità si presta a mettere a fuoco le diverse vie intraprese da Sartre e Arendt per declinare l’idea di libertà in quanto creatrice di nuovi inizi nelle sue conseguenze morali, sociali e politiche. Comuni radici nella Fenomenologia lasciano intravedere, pur nella differenza, il persistere di preoccupazioni convergenti: come articolare libertà individuale e pluralismo? Impegno morale personale e vita pubblica? Per rispondere a questi interrogativi vengono prese in considerazione tre aree tematiche comuni ai due autori: la relazione tra libertà e violenza; autopresentazione e sguardo; il ruolo di pensiero e scelta nell’impegno morale e politico.
description: Studi Sartriani – Anno XIII – L’umana disumanità
Efficient methods for qualitative spatial and temporal reasoning
Creators: name: Li, Jason Jingshi
Publisher: name: The Australian National University
Year: 2010
Subjects: subject: Q339.25. L5 2010
subject: Qualitative reasoning
subject: Spatial analysis (Statistics)
subject: Space and time

description: Qualitative aspects of spatial or temporal information such as the distance between points, duration between events, and topology between regions can be modelled by a qualitative calculus. It represent the relations between various entities in space or time by a set of base relations, and ambiguity or incomplete knowledge can be expressed as a disjunction of different possible base relations. This thesis investigates the reasoning problem of such qualitative spatial or temporal calculi, where the task is to determine whether a given set of spatial or temporal information is consistent. The main challenge is to deal with the large number of possible relations between the spatial or temporal entities, and to find the solution in an efficient manner. This thesis approaches this challenge from several directions. We first investigate if there are some relations in a qualitative calculus which could form constraint networks that make the reasoning problem difficult. This would help us to determine whether tractable reasoning is actually possible. Secondly, we investigate algebraic properties of a qualitative calculus. We present a condition of the qualitative calculus that ensures no inconsistencies can be introduced when combining two constraint networks that share information in common. Thirdly, we reverse this process to decompose a constraint network into many smaller components to decide consistency. We evaluate our results using a well known qualitative temporal calculus, Allen's Interval Algebra, and show that this leads to a significant improvement to current state of the art. Finally, we apply the network decomposition approach to large qualitative calculi such as Rectangle Algebra and Block Algebra. The latter was previously considered too large for any efficient reasoning. We show that our approach works well for most instances of these calculi, and that efficient reasoning with these highly expressive spatial calculi is indeed possible.
Fluctuations of subsystem entropies at late times
Creators: name: Cotler, Jordan
name: Hunter-Jones, Nicholas
name: Ranard, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the fluctuations of subsystem entropies in closed quantum many-body systems after thermalization. Using a combination of analytics and numerics for both random quantum circuits and Hamiltonian dynamics, we find that the statistics of such entropy fluctuations is drastically different than in the classical setting. For instance, shortly after a system thermalizes, the probability of entropy fluctuations for a subregion is suppressed in the dimension of the Hilbert space of the complementary subregion. This suppression becomes increasingly stringent as a function of time, ultimately depending on the exponential of the Hilbert space dimension, until extremely late times when the amount of suppression saturates. We also use our results to estimate the total number of rare fluctuations at large timescales. We find that the "Boltzmann brain" paradox is largely ameliorated in quantum many-body systems, in contrast with the classical setting.
description: 7+16 pages, 9 figures; v2: typos corrected, arguments clarified, refs added
Entanglement Split:Comment on ``Quantum secret sharing based on reusable Greenberger-Horne-Zeilinger states as secure carriers'' [Phys. Rev. A 67, 044302 (2003)]
Creators: name: Du, Jian-Zhong
name: Qin, Su-Juan
name: Wen, Qiao-Yan
name: Zhu, Fu-Chen
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In a recent paper [S. Bagherinezhad and V. Karimipour, Phys. Rev. A 67, 044302 (2003)], a quantum secret sharing protocol based on reusable GHZ states was proposed. However, in this comment, it is shown that this protocol is insecure because a cheater can gain all the secret bits before sharing, while introducing one data bit error at most in the whole communication, which makes the cheater avoid the detection by the communication parities.
description: 4 pages,no figures, subbmitted to Phys.Rev.A on December 16,2005
title:  Extracting Social Network Model Parameters from Social Science Literature
Creators: name: Batts, Isaac
Publisher: name: University of Kentucky Libraries
Year: 2024
Subjects: classificationCode: 2
subject: FOS: Engineering and technology

description: When looking at computer modeling of social situations, much of the social science literature does not include ready-to-use statistics or parameters to be included in a social model. I explore studies related to speaking about racism (and other forms of bias), and interventions designed to diminish the occurrence of biased behavior, and use those readings to synthesize plausible parameters for a social computer model.
description: © 2024 Isaac Batts
Solon fondateur de la Boule des Quatre Cents ?
Creators: name: Bartzoka, Alexandra
Publisher: name: Università degli Studi di Torino - Dipartimento di Studi Storici
Year: 2013
Subjects: Boulè ; Conseil des Quatre Cents ; Solon ; Aristote ; Plutarque

description: Il y a deux sources qui mentionnent de manière directe la création de la Boule des Quatre Cents par Solon, Aristote dans la Constitution d’Athènes et Plutarque dans la Vie de Solon. Ces deux passages ont été traités par l’historiographie contemporaine de deux façons différentes; soit ils sont acceptés et, dans ce cadre, le Conseil des Quatre Cents est considéré comme une réforme importante de Solon, soit ils sont rejetés et l’existence d’un tel Conseil au début du VIe siècle est considérée comme improbable. Par conséquent, l’objectif de ce travail est de réexaminer ces deux passages principaux et toute autre mention possible d’un Conseil des Quatre Cents dans les sources et de les lier au contexte historique de l’époque de Solon.

 There are two sources that explicitly mention the creation of the Council of Four Hundred by Solon: Aristotle in the Constitution of Athens and Plutarch in the Life of Solon. These two passages are treated by modern scholarship in two different ways. They are either accepted, in which case the Council of the Four Hundred is considered as a major reform of Solon, or they are rejected, rendering the existence of such a Council in the early sixth century unlikely. This work aims to review these two passages, as well as any other possible mention of a Council of Four Hundred in the sources, and to explain them in accordance with the historical context of the time of Solon.
description: HISTORIKA Studi di storia greca e romana, Vol 2 (2012)
iBOA: The Incremental Bayesian Optimization Algorithm
Creators: name: Pelikan, Martin
name: Sastry, Kumara
name: Goldberg, David E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: I.2.6; I.2.8; G.1.6

description: This paper proposes the incremental Bayesian optimization algorithm (iBOA), which modifies standard BOA by removing the population of solutions and using incremental updates of the Bayesian network. iBOA is shown to be able to learn and exploit unrestricted Bayesian networks using incremental techniques for updating both the structure as well as the parameters of the probabilistic model. This represents an important step toward the design of competent incremental estimation of distribution algorithms that can solve difficult nearly decomposable problems scalably and reliably.
description: Also available at the MEDAL web site, http://medal.cs.umsl.edu/
Fitting Exponential and Logistic Growth Models to Bacterial Cell Count Data
Creators: name: Rumpf, Adam
Publisher: name: QUBES Educational Resources
Year: 2021

description: In this activity, students will model a noisy set of bacterial cell count data using both exponential and logistic growth models. For each model the students will plot the data (or a linear transformation of the data) and apply the method of least squares to fit the model's parameters. Activities include both theoretical and conceptual work, exploring the properties of the differential equation models, as well as hands-on computational work, using spreadsheets to quickly process large amounts of data. This activity is meant as a capstone to the differential calculus portion of a typical undergraduate Calculus I course. It explores a biological application of a variety of differential calculus concepts, including: differential equations, numerical differentiation, optimization, and limits. Additional topics explored include semi-log plots and linear regression.
Undulating compression and multi-stage relaxation in a granular column consisting of dust particles or glass beads
Creators: name: Pacheco-Vázquez, Felipe
name: Omura, Tomomi
name: Katsuragi, Hiroaki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: For fundamentally characterizing the effect of hierarchical structure in granular matter, a set of compression-relaxation tests for dust particles and glass beads confined in a cylindrical cell was performed. Typical diameter of both grains is approximately 1~mm. However, dust particles are produced by binding tiny ($\sim 5$~{\textmu}m) glass beads. The granular columns were compressed with a piston until reaching a maximum load force of 20~N with a constant compression rate $v$ ($0.17 \leq v \leq 2000$~{\textmu}m~s$^{-1}$). After that, the piston was stopped and the relaxation process was quantified. From the experimental results, we found that the compression force $F$ nonlinearly increases with the increase of compression stroke $z$ depending on particles. Besides, periodic undulation and sudden force drops were observed on $F(z)$ in dust particles and glass beads, respectively. The relaxation process was characterized by an exponential decay of stress followed by a logarithmic dependence one in both kinds of particles. These experimental findings are the main point in this study. To understand the underlying physics governing the compression mechanics, we assumed empirical forms of $F(z)$; $F\propto z^α$ for dust particles and $F \propto \exp(z/z_G)$ for glass beads ($α=2.4$ and $z_G=70$~{\textmu}m). Then, we found that the growing manners of periodic undulation and force drops were identical to those of mean compression forces, i.e., power law in dust particles and exponential in glass beads. In addition, the undulation amplitude and wavelength decreased as $v$ increased in dust-particles compression. On the basis of experimental results and the difference between dust particles and glass beads, we also discuss the origin of undulation and the physical meaning of granular-compression models used in engineering fields.
description: 15 pages, 13 figures