cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Inspection-on-the-fly using Hybrid Physical Interaction Control for Aerial Manipulators
Creators: name: Praveen, Abbaraju
name: Ma, Xin
name: Manoj, Harikrishnan
name: Venkatesh, Vishnunandan LN.
name: Rastgaar, Mo
name: Voyles, Richard M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Inspection for structural properties (surface stiffness and coefficient of restitution) is crucial for understanding and performing aerial manipulations in unknown environments, with little to no prior knowledge on their state. Inspection-on-the-fly is the uncanny ability of humans to infer states during manipulation, reducing the necessity to perform inspection and manipulation separately. This paper presents an infrastructure for inspection-on-the-fly method for aerial manipulators using hybrid physical interaction control. With the proposed method, structural properties (surface stiffness and coefficient of restitution) can be estimated during physical interactions. A three-stage hybrid physical interaction control paradigm is presented to robustly approach, acquire and impart a desired force signature onto a surface. This is achieved by combining a hybrid force/motion controller with a model-based feed-forward impact control as intermediate phase. The proposed controller ensures a steady transition from unconstrained motion control to constrained force control, while reducing the lag associated with the force control phase. And an underlying Operational Space dynamic configuration manager permits complex, redundant vehicle/arm combinations. Experiments were carried out in a mock-up of a Dept. of Energy exhaust shaft, to show the effectiveness of the inspection-on-the-fly method to determine the structural properties of the target surface and the performance of the hybrid physical interaction controller in reducing the lag associated with force control phase.
description: This paper has been accept for IROS 2020 publication
Unirhinal olfactory identification deficits and convergent lateralized neuropsychological impairment in male patients with schizophrenia
Creators: name: Good, Kimberley Patricia Miriam
Publisher: name: University of British Columbia
Year: 2009

description: Prior research has revealed that olfactory identification ability is impaired in male patients with schizophrenia. Additionally, lateralized differences have been observed in olfactory functioning in normal individuals who have intact sense of smell. The purpose of this study was to determine whether the pattern of olfactory laterality observed in male patients with schizophrenia was different from that observed in non-schizophrenic, normal, male control subjects. In addition, if patients with unirhinal olfactory identification deficits were found, did these individuals have a different profile of neuropsychological impairment relative to those patients with intact sense of smell? Methods: Forty-three male in-patients with a DSM-IV diagnosis of schizophrenia and 59 normal male control subjects were assessed unirhinally on three measures of olfactory function: olfactory acuity, identification and discrimination ability. Additionally, a battery of neuropsychological tests sensitive to brain lesions in regions critical to olfaction (left and right temporal and frontal lobes) was also administered. Results: No particular pattern of olfactory laterality was observed in either the normal control or the male patient groups on any of the olfactory measures. Using cutting scores generated from performance of the normal control subjects on the olfactory identification task, patients were classified according to nostril deficit. Three groups were compared: left microsmic (n=12), right microsmic (n=5) and normosmic schizophrenic controls (n=25). On tests of left hemisphere function, the left microsmic group was preferentially impaired while on tests of right hemisphere function, the right microsmic group was preferentially impaired. On demographic and experiential variables, the left microsmic group was impaired on a measure of premorbid IQ (reading of irregular words) and the normosmic group was significantly younger than both other groups. Discussion and implications . These data suggest that using a simple, non-invasive measure of unirhinal olfactory identification ability, male patients with schizophrenia could be categorized into subgroups with lateralized brain dysfunction. Those with left hemisphere abnormalities may be those with a neurodevelopmental form of the disorder given their poor reading capacity (an ability which is acquired early in life) despite similarities amongst subgroups on educational achievement and parental socioeconomic status.
Simulations of Cold Electroweak Baryogenesis: Finite time quenches
Creators: name: Tranberg, Anders
name: Smit, Jan
name: Hindmarsh, Mark
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The electroweak symmetry breaking transition may supply the appropriate out-of-equilibrium conditions for baryogenesis if it is triggered sufficiently fast. This can happen at the end of low-scale inflation, prompting baryogenesis to occur during tachyonic preheating of the Universe, when the potential energy of the inflaton is transfered into Standard Model particles. With the proper amount of CP-violation present, the observed baryon number asymmetry can be reproduced. Within this framework of Cold Electroweak Baryogenesis, we study the dependence of the generated baryon asymmetry on the speed of the quenching transition. We find that there is a separation between ``fast'' and ``slow'' quenches, which can be used to put bounds on the allowed Higgs-inflaton coupling. We also clarify the strong Higgs mass dependence of the asymmetry reported in a companion paper (hep-ph/0604263).
description: 18 pages, 20 figures
Luminescent properties of polyaniline capped Mn doped ZnS quantum dots
Creators: name: BALA, Anju
Publisher: name: Metallurgy and Materials Science Research Institute Chulalongkorn University
Year: 2021
Subjects: Polyaniline
Zinc sulfide nanoparticles
Luminescent properties
Ab-initio computation

description: Journal of Metals, Materials and Minerals, 31, 4, 151-157
Effects of Ambient Air Pollutants on Hospital Admissions Among Children Due to Asthma and Wheezing-Associated Lower Respiratory Infections in Mysore, India: A Time Series Study
Creators: name: Malamardi, Sowmya Nagappa
name: Lambert, Katrina
name: Siddaiah, Jayaraj Biligere
name: Erbas, Bircan
name: Mahesh, Padukudru Anand
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 4206
subject: Public health
classificationCode: 3213
subject: Paediatrics

description: Air pollutants are known to trigger asthma and wheezing-associated lower respiratory infections in children, but evidence regarding their effect on hospital admissions in India is limited. We conducted a time-series study over a period of five years to assess the role of ambient air pollutants in daily asthma-related hospital admissions in children in Mysore, India. Daily asthma and wheeze (associated with lower respiratory infections) admissions were modelled using a generalised additive model (GAM) to examine the non-linear effects and generalised linear models (GLM) for linear effects, if any. Models were adjusted by day of the week and lag days, with smooth terms for time, maximum temperature, and relative humidity, and they were stratified by sex and age group. Of the 362 children admitted, more than 50% were boys, and the mean age was 5.34 years (±4.66). The GAMs showed non-linear associations between NO2, PM2.5, and NH3. For example, a 10 µgm−3 (or 10%) increase in NO2 increased admissions by 2.42. These non-linear effects were more pronounced in boys. A linear effect was detected for PM10 with a relative risk (95% CI) of 1.028, 1.013, and 1.043 with admission. Further research is needed to explore whether these findings can be replicated in different cities in India. Air pollution needs to be controlled, and policies that focus on lower cut-off levels for vulnerable populations are necessary.
Aspidisca cicada Claparede & Lachmann 1858
Creators: name: Durán-Ramírez, Carlos Alberto
name: Dias, Roberto Júnio Pedroso
name: Estrada, Rosaura Mayén-
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Chromista
Ciliophora
Gymnostomatea
Pleurostomatida
Litonotidae
Aspidisca
Aspidisca cicada

description: Aspidisca cicada (Müller, 1786) Claparède & Lachmann, 1858
Distribution. BRAZIL: Paraná River between the Nupelia’s Field Station and the district of Porto São José, São Pedro do Paraná (Buosi et al. 2014 b, 2015), (Ad).
description: Published as part of Durán-Ramírez, Carlos Alberto, Dias, Roberto Júnio Pedroso & Estrada, Rosaura Mayén-, 2020, Checklist of ciliates (Alveolata: Ciliophora) that inhabit in bromeliads from the Neotropical Region, pp. 1-36 in Zootaxa 4895 (1) on page 9, DOI: 10.11646/zootaxa.4895.1.1, http://zenodo.org/record/4321437
Modelling solar-like variability for the detection of Earth-like planetary transits. I. Performance of the three-spot modelling and harmonic function fitting
Creators: name: Bonomo, A. S.
name: Lanza, A. F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a comparison of two methods of fitting solar-like variability to increase the efficiency of detection of Earth-like planetary transits across the disk of a Sun-like star. One of them is the harmonic fitting method that coupled with the BLS detection algorithm demonstrated the best performance during the first CoRoT blind test. We apply a Monte Carlo approach by simulating a large number of light curves of duration 150 days for different values of planetary radius, orbital period, epoch of the first transit, and standard deviation of the photon shot noise. Stellar variability is assumed in all the cases to be given by the Total Solar Irradiance variations as observed close to the maximum of solar cycle 23. After fitting solar variability, transits are searched for by means of the BLS algorithm. We find that a model based on three point-like active regions is better suited than a best fit with a linear combination of 200 harmonic functions to reduce the impact of stellar microvariability provided that the standard deviation of the noise is 2-4 times larger than the central depth of the transits. On the other hand, the 200-harmonic fit is better when the standard deviation of the noise is comparable to the transit depth. Our results show the advantage of a model including a simple but physically motivated treatment of stellar microvariability for the detection of planetary transits when the standard deviation of the photon shot noise is greater than the transit depth and stellar variability is analogous to solar irradiance variations.
description: 8 pages, 6 figures, accepted by Astronomy & Astrophysics
Route Disruption Analysis
Creators: name: Kirk, Adam
name: Chen, Mei
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2007
Subjects: subject: Transportation Engineering

description: In today’s society, transportation has become a vital component of our economy, our national defense, our emergency response systems, and our day-to-day life. Disruption of major highway systems can have serious social, health, economic, security, and environmental consequences. Disruption of highway systems can result from natural or man-made causes, and it may be intentional or unintentional. Examples of the wide-ranging causes of highway disruption include weather, natural disasters, vehicle crashes, hazardous material spills, barge impacts with bridge piers, and acts of terrorism. Disruption of key transportation chokepoints, such as bridges or tunnels, could have disastrous impacts on Kentucky. With this in mind, it would seem prudent to begin to develop strategies to prevent such events or to mitigate their impacts if they should occur. It is no doubt impossible, and probably unnecessary, to protect every segment of the surface transportation system. However, it is possible to identify those most critical segments where a disruption would have dire effects. For those segments, it is reasonable to expect that, over time, protection strategies can be developed, alternative routes can be provided, and contingency plans can be put in place. The objective of this project is to analyze the major highway routes in and through Kentucky to determine the potential liabilities associated with disruption of these routes. The analysis assesses the availability of convenient by-pass routes and the anticipated impacts (mobility, economic, and others) of a disruption. The results of this study will allow transportation decision-makers to identify those route segments in the Commonwealth that would cause the greatest adverse impacts if they were interrupted. This will allow the Transportation Cabinet to develop and implement an intelligent strategy for preventing or mitigating such an interruption. Such a strategy could include surveillance and/or other security measures, reinforcement to minimize damage, and/or providing redundancy in available routes. Implementation of the recommendations developed under this study will substantially increase the survivability of Kentucky’s surface transportation system. Kentucky would then be much less vulnerable to a natural or man-made disruption to the flow of surface transportation system.
title: Zur Frage der Grenzen von Solidarität und Verantwortung in der europäischen Flüchtlingspolitik
title: Mit einem Vorwort von Marianne Heimbach-Steins
titleType: Subtitle
Creators: name: Bausch, Christiane
name: Eggers, Nina E.
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2022
Subjects: subject: 241 Christian ethics

description: Die Politikwissenschaftlerinnen Christiane Bausch und Nina E. Eggers stellen drei sozialphilosophische Ansätze zur Begründnung von Solidarität und Verantwortung im Kontext der aktuellen Migrationsdebatte vor. Sie formulieren darauf aufbauend Gedanken zu einer unausweichlichen europäischen Verantwortung und ihren Herausforderungen in der politisch(-ethischen) Praxis.
description: Marianne Heimbach-Steins | Vorwort ..... 1 Christiane Bausch & Nina E. Eggers | Zur Frage der Grenzen von Solidarität und Verantwortung in der europäischen Flüchtlingspolitik ..... 3 1. Einleitung ..... 3 2. Solidarität unter gleichen Rechtsgenossen (Hauke Brunkhorst) ..... 5 3. Solidarität durch Einfühlung und moralische Sensibilisierung (Richard Rorty) ..... 7 4. Verantwortung aus sozialer Verbundenheit (Iris Marion Young) ..... 9 5. Fazit ..... 11 Literatur ..... 13 Die Autorinnen ..... 15 Bisher erschienene Sozialethische Arbeitspapiere des ICS ..... 15
Evaluation of Energy Resolution by Changing Angle and Position of Incident Photon in a LYSO Calorimeter
Creators: name: Saad, A. M. E.
name: Kocak, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this paper, we investigate the effect on energy resolution from changing the angle and the position of incidence photon for a 5 $\times$ 5 crystal matrix built with (25 $\times$ 25 $\times$ 200) mm$^{3}$ LYSO scintillating crystals. Those crystals have been proposed for the electromagnetic calorimeter of the Turkish Accelerator Center-Particle Factory (TAC-PF) detector. The energy resolution was obtained as $σ_{E}/E = 0.42 \% / \sqrt{E/GeV} \oplus 1.60 \%$ at the center of the matrix in the energy range of 50 MeV to 2 GeV. When we examined the dependence of the energy resolution on the incidence angle of the photon, resolution began to deteriorate at angles greater than $2^{\circ}$ on the 5 $\times$ 5 crystal matrix. Moreover, energy resolution at the corners of the central crystal was worse than at the center of the central crystal by a factor of 1.3 at 50 MeV and 1.1 at 2 GeV.
description: 10 pages, 6 figures
Letter from J.E. McAllister to Jas. [James] Goldie, March 9, 1914
Creators: name: McAllister, John Edgar
Publisher: name: The University of British Columbia
Year: 2017

description: Letter to James Goldie from J.E. McAllister, dated March 9, 1914, regarding his leaving to Lusitania and refers to an enclosed letter from him to the manager of the Bank of Commerce in Vernon.
Developing a Byproduct Materials Information Systems for the Kentucky Transportation Cabinet
Creators: name: Hunsucker, David Q.
name: Jones, Justin
name: Hopkins, Tom
name: Sun, Charlie
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2007
Subjects: subject: Transportation Engineering

description: Kentucky has numerous coal-fired, electric generating facilities and, as a result, there are abundant byproduct materials being produced from these facilities that have environmental, engineering, and economic potential as materials for use in common highway construction and maintenance related activities throughout the Commonwealth. Other byproduct materials are being produced and are available that may have potential uses as well. Although large quantities of byproduct materials are produced in Kentucky and many of those materials have positive or neutral environmental impacts and excellent engineering properties, a formal regulatory framework for selecting, characterizing, recovering, and recycling these material types does not exist. Fundamentally, the lack of a regulatory protocol is an obstacle to recycling byproducts and discourages the use of byproduct materials by the Kentucky Transportation Cabinet. During this research effort, a byproduct materials information system was developed to guide the selection and use of ponded ashes in highway construction and maintenance activities. The information system was designed to be modular so that additional recovered and recyclable materials could be included within the matrices as these materials are evaluated at some future date. It is fully anticipated that the byproduct information system eventually will encompass any recovered or recycled materials that are shown through the prescribed method of evaluation to possess satisfactory environmental, engineering and economic characteristics that make them suitable for use in highway construction and maintenance activities.
Notes on the algebraic curves in (p,q) minimal string theory
Creators: name: Fukuma, Masafumi
name: Irie, Hirotaka
name: Matsuo, Yoshinori
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Loop amplitudes in (p,q) minimal string theory are studied in terms of the continuum string field theory based on the free fermion realization of the KP hierarchy. We derive the Schwinger-Dyson equations for FZZT disk amplitudes directly from the W_{1+\infty} constraints in the string field formulation and give explicitly the algebraic curves of disk amplitudes for general backgrounds. We further give annulus amplitudes of FZZT-FZZT, FZZT-ZZ and ZZ-ZZ branes, generalizing our previous D-instanton calculus from the minimal unitary series (p,p+1) to general (p,q) series. We also give a detailed explanation on the equivalence between the Douglas equation and the string field theory based on the KP hierarchy under the W_{1+\infty} constraints.
description: 61 pages, 1 figure, section 2.5 and Appendix B added, references added, final version to appear in JHEP
Lyapunov Stability of Smart Inverters Using Linearized DistFlow Approximation
Creators: name: Saha, Shammya Shananda
name: Arnold, Daniel
name: Scaglione, Anna
name: Schweitzer, Eran
name: Roberts, Ciaran
name: Peisert, Sean
name: Johnson, Nathan G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Fast-acting smart inverters that utilize preset operating conditions to determine real and reactive power injection/consumption can create voltage instabilities (over-voltage, voltage oscillations and more) in an electrical distribution network if set-points are not properly configured. In this work, linear distribution power flow equations and droop-based Volt-Var and Volt-Watt control curves are used to analytically derive a stability criterion using \lyapnouv analysis that includes the network operating condition. The methodology is generally applicable for control curves that can be represented as Lipschitz functions. The derived Lipschitz constants account for smart inverter hardware limitations for reactive power generation. A local policy is derived from the stability criterion that allows inverters to adapt their control curves by monitoring only local voltage, thus avoiding centralized control or information sharing with other inverters. The criterion is independent of the internal time-delays of smart inverters. Simulation results for inverters with and without the proposed stabilization technique demonstrate how smart inverters can mitigate voltage oscillations locally and mitigate real and reactive power flow disturbances at the substation under multiple scenarios. The study concludes with illustrations of how the control policy can dampen oscillations caused by solar intermittency and cyber-attacks.
description: Accepted for IET Renewable Power Generation
Teaching quantum computing with an interactive textbook
Creators: name: Wootton, James R.
name: Harkins, Francis
name: Bronn, Nicholas T.
name: Vazquez, Almudena Carrera
name: Phan, Anna
name: Asfaw, Abraham T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics Education (physics.ed-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum computing is a technology that promises to offer significant advantages during the coming decades. Though the technology is still in a prototype stage, the last few years have seen many of these prototype devices become accessible to the public. This has been accompanied by the open-source development of the software required to use and test quantum hardware in increasingly sophisticated ways. Such tools provide new education opportunities, not just for quantum computing specifically, but also more broadly for quantum information science and even quantum physics as a whole. In this paper we present a case study of one education resource which aims to take advantage of the opportunities: the open-source online textbook `Learn Quantum Computation using Qiskit'. An overview of the topics covered is given, as well as an explanation of the approach taken for each.
Fermi Liquid Theory Sheds Light on "Hot" EHL in 1L-MoS$_2$
Creators: name: Wilmington, R. L.
name: Ardekani, H.
name: Rustagi, A.
name: Bataller, A.
name: Kemper, A. F.
name: Younts, R. A.
name: Gundogdu, K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: 2D transition metal dichalcogenides (TMDCs) exhibit an electron-hole liquid phase transition at unusually high temperatures. Because these materials are atomically thin, optical excitation leads to material expansion. As a result, during the EHL phase transition the electronic band structure evolves due to both material thermal expansion and renormalization of the bands under high excitation densities. Specifically, these effects lead to indirect gap electronic band structure with a valence band maximum located at the $Γ$ valley. In this work we developed a methodology for analyzing the spectral evolution of the photoluminescence of suspended 1L-MoS$_2$ during the EHL phase transition by using Fermi liquid theory. The resulting analysis reveals valley-specific carrier densities, radiative recombination efficiencies, and intraband carrier relaxation kinetics in 1L-MoS$_2$. More broadly, the results outline a methodology for predicting critical EHL parameters, shedding light onto the EHL phase transition in 2D TDMCs.
description: 13 pages, 4 figures, RevTex-4.2
Context Sensitive Solutions for Construction and Maintenance
Creators: name: Hopwood, Theodore
name: Hartman, Donald L.
name: Pigman, Jerry G.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2007
Subjects: subject: Transportation Engineering

description: The objective of this research was to conduct a survey to assess the state of practice related to state highway agencies (SHAs) implementing context sensitive solutions including its application in Construction and Maintenance and to prepare a workshop enabling SHA officials to adopt practices promoting context sensitivity beyond Planning and Design.  Deliverables from the study efforts include a survey summary of context sensitive solutions and workshop materials/presentation suitable for use in training a wide range of SHA personnel working in Construction and Maintenance.
Mimicking neutron star precession by polar cap current-pattern drifting
Creators: name: Ruderman, M.
name: Gil, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose a model for rotating current patterns within radiopulsar polar cap accelerators which has observational consequences that mimic those which have been attributed to neutron star free precession. The model is a simple extension of a canonical one for the origin of the "drifting subpulses" often observed within the pulse envelope of radiopulsars. The new model's current pattern rotation period (with respect to the neutron star) is estimated to be of order a year. Associated with that rotation are small oscillations in spin-down torque, pulse arrival time, and radiobeam direction with this same period. These have estimated magnitudes which support a reinterpretation of free precession "observations" which could resolve the severe problem of obtaining anywhere near the otherwise required precession parameters with canonical neutron star models.
Prevention of VOC Releases from Bridge Painting Operations
Creators: name: Hopwood, Theodore
name: Younce, Rick
name: Palle, Sudhir
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 2007
Subjects: subject: Transportation Engineering

description: Bridge maintenance painting employs solvent-based coatings that generate volatile organic compounds (VOCs) that contribute to air-quality problems. Methods for capturing VOCs during normal Kentucky Transportation Cabinet (KYTC) maintenance painting operations were investigated. One method, activated carbon adsorption, is adaptable to KYTC operations. Related factors including area of bridge, coating systems, containment volumes and VOC out gassing rates were reviewed. A commercial source of activated carbon adsorption equipment was identified and issues related to employing that technology for bridge painting were identified.
Neutron stars mergers in a stochastic chemical evolution model: impact of time delay distributions
Creators: name: Cavallo, L.
name: Cescutti, G.
name: Matteucci, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the evolution of the [Eu/Fe] ratio in the Galactic halo by means of a stochastic chemical evolution model considering merging neutron stars as polluters of europium. We improved our previous stochastic chemical evolution model by adding a time delay distribution for the coalescence of the neutron stars, instead of constant delays. The stochastic chemical evolution model can reproduce the trend and the observed spread in the [Eu/Fe] data with neutron star mergers as unique producers if we assume: i) a delay time distribution $\propto t^{-1.5}$, ii) a $M_{Eu}= 1.5$x$10^{-6} M_{\odot}$ per event, iii) progenitors of neutron stars in the range $9-50M_{\odot}$ and iv) a constant fraction of massive stars in the initial mass function (0.02) that produce neutron star mergers. Our best model is obtained by relaxing point iv) and assuming a fraction that varies with metallicity. We confirm that the mixed scenario with both merging neutron stars and supernovae as europium producers can provide a good agreement with the data relaxing the constraints on the distribution time delays for the coalescence of neutron stars. Adopting our best model, we also reproduce the dispersion of [Eu/Fe] at a given metallicity, which depends on the fraction of massive stars that produce neutron star mergers. Future high-resolution spectroscopic surveys, such as 4MOST and WEAVE, will produce the necessary statistics to constrain at best this parameter.
Test of Influence from Future in Large Hadron Collider; A Proposal
Creators: name: Nielsen, Holger B.
name: Ninomiya, Masao
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Physics (physics.gen-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We have earlier proposed the idea of making card drawing experiment of which outcome potentially decides whether Large Hadron Collider (LHC for short) should be closed or not. The purpose is to test theoretical models which, like e.g. our own model that has an imaginary part of the action with much a similar form to that of the real part. The imaginary part has influence on the initial conditions not only in the past but even from the future. It was speculated that all accelerators producing large amounts of Higgs particles like the Superconducting Super Collider (SSC for short) would call for initial conditions to have been so arranged as to finally not allow these accelerators to come to work. If there were such effects we could perhaps provoke a very clear cut "miracle" by having the effect make the drawn card be the one closing LHC. Here we shall, however, discuss that a total closing is hardly needed and seek to calculate how one could perform checking experiment for the proposed type of influence from future to be made in the statistically least disturbing and least harmful way. We shall also discuss how to extract most information about our effect or model in the unlikely case that a card restricting the running of LHC or the Tevatron would be drawn at all, by estimating say the relative importance of high beam energy or of high luminosity for the purpose of our effect.
description: 33 pages
Pion spectrum using improved staggered fermions
Creators: name: Bae, Taegil
name: Kim, Jongjeong
name: Lee, Weonjong
name: Sharpe, Stephen R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present results for the pion multiplet spectrum calculated using both unimproved staggered fermions and improved HYP-smeared staggered fermions. In the case of unimproved staggered fermions, we observe (consistent with previous work) that ${\cal O}(a^2)$ taste symmetry breaking effects are large and comparable to the $\approx {\cal O}(p^2)$ contributions to their masses. Higher order ${\cal O}(a^2 p^2)$ effects are also substantial enough to be seen. For HYP-smeared staggered fermions, we find that taste breaking is much reduced. The ${\cal O}(a^2)$ effects are observable, but are noticeably smaller than those obtained with AsqTad-improved staggered fermions, and much smaller than those obtained using unimproved staggered fermions, while ${\cal O}(a^2 p^2)$ effects are suppressed to such a level that we cannot observe them given our statistical errors. From this numerical study, we conclude that HYP staggered fermions are significantly better that AsqTad fermions from the perspective of taste symmetry breaking.
description: 7 pages, 8 figures, Lattice 2006 conference proceeding, a few minor revisions
Helium preenrichment in the star-forming regions
Creators: name: Chuzhoy, Leonid
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show that element diffusion can produce large fluctuations in the initial helium abundance of the star-forming clouds. Diffusion time-scale, which in stars is much larger than the Hubble time, can fall below 10^8 years in the neutral gas clouds dominated by collisionless dark matter or with dynamically important radiation or magnetic pressure. Helium diffusion may therefore explain the recent observations of globular clusters, which are inconsistent with initially homogeneous helium distribution.
description: 4 pages, accepted by MNRAS (Letters)
Asymptotic behavior of beta-integers
Creators: name: Balková, L.
name: Gazeau, J. P.
name: Pelantová, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Beta-integers (``$β$-integers'') are those numbers which are the counterparts of integers when real numbers are expressed in irrational basis $β> 1$. In quasicrystalline studies $β$-integers supersede the ``crystallographic'' ordinary integers. When the number $β$ is a Parry number, the corresponding $β$-integers realize only a finite number of distances between consecutive elements and somewhat appear like ordinary integers, mainly in an asymptotic sense. In this letter we make precise this asymptotic behavior by proving four theorems concerning Parry $β$-integers.
description: 17 pages
Gaussian hypergeometric series and supercongruences
Creators: name: Osburn, Robert
name: Schneider, Carsten
Publisher: name: arXiv
Year: 2006
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F33, 33F10, 11S80

description: Let p be an odd prime. In 1984, Greene introduced the notion of hypergeometric functions over finite fields. Special values of these functions have been of interest as they are related to the number of F_p points on algebraic varieties and to Fourier coefficients of modular forms. In this paper, we explicitly determine these functions modulo higher powers of p and discuss an application to supercongruences. This application uses two non-trivial generalized Harmonic sum identities discovered using the computer summation package Sigma. We illustrate the usage of Sigma in the discovery and proof of these two identities.
description: completely rewritten version, 19 pages, accepted for publication in Mathematics of Computation
Predictive K-means with local models
Creators: name: Lemaire, Vincent
name: Ismaili, Oumaima Alaoui
name: Cornuéjols, Antoine
name: Gay, Dominique
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Supervised classification can be effective for prediction but sometimes weak on interpretability or explainability (XAI). Clustering, on the other hand, tends to isolate categories or profiles that can be meaningful but there is no guarantee that they are useful for labels prediction. Predictive clustering seeks to obtain the best of the two worlds. Starting from labeled data, it looks for clusters that are as pure as possible with regards to the class labels. One technique consists in tweaking a clustering algorithm so that data points sharing the same label tend to aggregate together. With distance-based algorithms, such as k-means, a solution is to modify the distance used by the algorithm so that it incorporates information about the labels of the data points. In this paper, we propose another method which relies on a change of representation guided by class densities and then carries out clustering in this new representation space. We present two new algorithms using this technique and show on a variety of data sets that they are competitive for prediction performance with pure supervised classifiers while offering interpretability of the clusters discovered.
Correlation Functions for a Chain of Short Range Oscillators
Creators: name: Mazzuca, Guido
name: Grava, Tamara
name: Kriecherbauer, Thomas
name: McLaughlin, Ken D. T. -R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 82C20

description: We consider a system of harmonic oscillators with short range interactions and we study their correlation functions when the initial data is sampled with respect to the Gibbs measure. Such correlation functions display rapid oscillations that travel through the chain. We show that the correlation functions always have two fastest peaks which move in opposite directions and decay at rate $t^{-\frac{1}{3}}$ for position and momentum correlations and as $t^{-\frac{2}{3}}$ for energy correlations. The shape of these peaks is asymptotically described by the Airy function. Furthermore, the correlation functions have some non generic peaks with lower decay rates. In particular, there are peaks which decay at rate $t^{-\frac{1}{4}}$ for position and momentum correlators and with rate $t^{-\frac{1}{2}}$ for energy correlators. The shape of these peaks is described by the Pearcey integral. Crucial for our analysis is an appropriate generalisation of spacings, i.e. differences of the positions of neighbouring particles, that are used as spatial variables in the case of nearest neighbour interactions. Using the theory of circulant matrices we are able to introduce a quantity that retains both localisation and analytic viability. This also allows us to define and analyse some additional quantities used for nearest neighbour chains. Finally, we study numerically the evolution of the correlation functions after adding nonlinear perturbations to our model. Within the time range of our numerical simulations the asymptotic description of the linear case seems to persist for small nonlinear perturbations while stronger nonlinearities change shape and decay rates of the peaks significantly.
description: 25 pages, 6 figures
Learning active learning at the crossroads? evaluation and discussion
Creators: name: Desreumaux, Louis
name: Lemaire, Vincent
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Active learning aims to reduce annotation cost by predicting which samples are useful for a human expert to label. Although this field is quite old, several important challenges to using active learning in real-world settings still remain unsolved. In particular, most selection strategies are hand-designed, and it has become clear that there is no best active learning strategy that consistently outperforms all others in all applications. This has motivated research into meta-learning algorithms for "learning how to actively learn". In this paper, we compare this kind of approach with the association of a Random Forest with the margin sampling strategy, reported in recent comparative studies as a very competitive heuristic. To this end, we present the results of a benchmark performed on 20 datasets that compares a strategy learned using a recent meta-learning algorithm with margin sampling. We also present some lessons learned and open future perspectives.
Novel surface universality classes with strong anisotropy
Creators: name: Schmittmann, B.
name: Pruessner, Gunnar
name: Janssen, H. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using renormalized field theory, we examine the dynamics of a growing surface, driven by an obliquely incident particle beam. Its projection on the reference (substrate) plane selects a ``parallel'' direction, so that the evolution equation for the surface height becomes anisotropic. The phase diagram of the model is controlled by the properties of an effective anisotropic surface tension. Our renormalization group analysis suggests the existence of a line of continuous transitions and a line of (potentially) first-order transitions, which meet at a multicritical point. The full scaling behavior for the continuous line and the multicritical point is discussed in detail. Two novel universality classes for scale-invariant surface fluctuations are found.
description: 25 pages, 1 figure. Accepted by Journal of Physics A: Special Issue on Renormalization Group 2005
A Three-Flavor, Lorentz-Violating Solution to the LSND Anomaly
Creators: name: de Gouvea, Andre
name: Grossman, Yuval
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate whether postulating the existence of Lorentz-violating, CPT-conserving interactions allows three-neutrino solutions to the LSND anomaly that are also consistent with all other neutrino data. We show that Lorentz-violating interactions that couple only to one of the active neutrinos have the right properties to explain all the data. The details of the data make this solution unattractive. We find, for example, that a highly non-trivial energy dependence of the Lorentz-violating interactions is required.
description: 15 pages, two eps figures. V2 - Minor modifications
Erwägungen zur neuen Missionserklärung des Ökumenischen Rates der Kirchen
Creators: name: Ahrens, Theodor
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 62 Nr. 2 (2013): Ökumenische Rundschau, Band 62, Heft 2
$B_K$ in unquenched QCD using improved staggered fermions
Creators: name: Kim, Jongjeong
name: Bae, Taegil
name: Lee, Weonjong
name: Sharpe, Stephen R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present preliminary results for $B_K$ calculated using improved staggered fermions with a mixed action (HYP-smeared staggered valence quarks and AsqTad staggered sea quarks). We investigate the effect of non-degenerate quarks on $B_K$ and attempt to estimate the ${\cal O}(a^2)$ effect due to non-Goldstone pions in loops. We fit the data to continuum partially quenched chiral perturbation theory. We find that the quality of fit for $B_K$ improves if we include non-degenerate quark mass combinations. We also observe, however, that the fitting curve deviates from the data points in the light quark mass region. This may indicate the need to include taste-breaking in pion loops.
description: 7 pages, 2 figures, Lattice 2006 conference proceeding, updated references, typos fixed
Influence maximization on temporal networks
Creators: name: Erkol, Sirag
name: Mazzilli, Dario
name: Radicchi, Filippo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We consider the optimization problem of seeding a spreading process on a temporal network so that the expected size of the resulting outbreak is maximized. We frame the problem for a spreading process following the rules of the susceptible-infected-recovered model with temporal scale equal to the one characterizing the evolution of the network topology. We perform a systematic analysis based on a corpus of 12 real-world temporal networks and quantify the performance of solutions to the influence maximization problem obtained using different level of information about network topology and dynamics. We find that having perfect knowledge of the network topology but in a static and/or aggregated form is not helpful in solving the influence maximization problem effectively. Knowledge, even if partial, of the early stages of the network dynamics appears instead essential for the identification of quasioptimal sets of influential spreaders.
description: 10 pages, 6 figures, 3 tables. SM available at http://homes.sice.indiana.edu/filiradi/Mypapers/Influence_maximization_on_temporal_networks_SM.pdf
Direct observation of the coexistence of pseudogap and superconducting quasi-particles in Bi2212 by time-resolved optical spectroscopy
Creators: name: Liu, Y. H.
name: Toda, Y.
name: Shimatake, K.
name: Momono, N.
name: Oda, M.
name: Ido, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report the ultra-fast optical response of quasi-particles (QPs) in both the pseudogap (PG) and superconducting (SC) states of underdoped (UD) Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+δ}$ (Bi2212) single crystal measured with the time-resolved pump-probe technique. At a probe energy $\hbarω_{pr}$=1.55 eV, it is found that the reflectivity change $Δ$R/R changes its sign at exactly $T_{c}$, which allows the direct separation of the charge dynamics of PG and SC QPs. Further systematic investigations indicate that the transient signals associated with PG and SC QPs depend on the probe beam energy and polarization. By tuning them below $T_{c}$ two distinct components can be detected simultaneously, providing evidence for the coexistence of PG and SC QPs.
description: 4 figures. One report on the ultrast dynamics of quasiparticles in underdoped Bi2Sr2CaCu2O8
Exploiting Web Images for Fine-Grained Visual Recognition by Eliminating Noisy Samples and Utilizing Hard Ones
Creators: name: Liu, Huafeng
name: Zhang, Chuanyi
name: Yao, Yazhou
name: Wei, Xiushen
name: Shen, Fumin
name: Zhang, Jian
name: Tang, Zhenmin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Labeling objects at a subordinate level typically requires expert knowledge, which is not always available when using random annotators. As such, learning directly from web images for fine-grained recognition has attracted broad attention. However, the presence of label noise and hard examples in web images are two obstacles for training robust fine-grained recognition models. Therefore, in this paper, we propose a novel approach for removing irrelevant samples from real-world web images during training, while employing useful hard examples to update the network. Thus, our approach can alleviate the harmful effects of irrelevant noisy web images and hard examples to achieve better performance. Extensive experiments on three commonly used fine-grained datasets demonstrate that our approach is far superior to current state-of-the-art web-supervised methods.
Scattering and small data completeness for the critical nonlinear Schroediger equation
Creators: name: Lindblad, Hans
name: Soffer, Avy
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35Q55

description: We prove Asymptotic Completeness of one dimensional NLS with long range nonlinearities. We also prove existence and expansion of asymptotic solutions with large data at infinity.