cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Supernova Relic Neutrino Backgrounds at KamLAND and Super-Kamiokande
Creators: name: Strigari, Louis E.
name: Kaplinghat, Manoj
name: Steigman, Gary
name: Walker, Terry P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the Supernova Relic Neutrino (SRN) background flux for the KamLAND and Super-Kamiokande (SK) detectors, motivated by the reduction in background at SK and new results for the star formation history (e.g., from the Sloan Digital Sky Survey (SDSS)). Our best estimate for the flux at SK is slightly below, but very close to the current SK upper limit. The SK upper limit is already inconsistent with a range of star formation histories allowed by the SDSS data. We estimate that the SRN background should be detected (at 1-sigma) at SK with a total of about 9 years (including the existing 4 years) of data. While KamLAND is a much smaller detector compared to SK, it profits from being practically background-free and from its sensitivity to the lower energy supernova neutrinos. KamLAND could make a 1-sigma detection of the SRN with a total of about 5 years of data. Given the small expected SRN event rate, we also consider the detection of the SRN in a modified SK detector with a lower threshold and reduced background where the time to detection can be reduced by a factor of 10 relative to the existing SK estimate.
description: Figure added, improved discussion of neutrino mixing, along with a new lower bound to the expected flux
Scarcity and Growth: How Does it Look Today
Creators: name: Norgaard, Richard B.
name: Norgaard, Richard B.
Publisher: name: Unknown
Year: 1975
Subjects: Resource /Energy Economics and Policy

description: In summary, our concern over scarcity and growth today is based on the long-standing issues as to whether we are developing technologies as fast as we are depleting high-grade resources. But our perception of the race is more sophisticated due to our increased awareness of the inevitable, the potential, and the sometimes irreversible environmental and social consequences of rushing ahead.
Monte Carlo Method for a Quantum Measurement Process by a Single-Electron Transistor
Creators: name: Goan, Hsi-Sheng
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive the quantum trajectory or stochastic (conditional) master equation for a single superconducting Cooper-pair box (SCB) charge qubit measured by a single-electron transistor (SET) detector. This stochastic master equation describes the random evolution of the measured SCB qubit density matrix which both conditions and is conditioned on a particular realization of the measured electron tunneling events through the SET junctions. Hence it can be regarded as a Monte Carlo method that allows us to simulate the continuous quantum measurement process. We show that the master equation for the "partially" reduced density matrix [Y. Makhlin et.al., Phys. Rev. Lett. 85, 4578 (2000)] can be obtained when a "partial" average is taken on the stochastic master equation over the fine grained measurement records of the tunneling events in the SET. Finally, we present some Monte Carlo simulation results for the SCB/SET measurement process. We also analyze the probability distribution P(m,t) of finding m electrons that have tunneled into the drain of the SET in time t to demonstrate the connection between the quantum trajectory approach and the "partially" reduced density matrix approach.
description: 7 pages, to appear in Phys. Rev. B
IFOP Study of Public Opinion
Creators: name: Institut Francais D'Opinion Publique
Publisher: name: Roper Center for Public Opinion Research
Year: 2022

description: Impression of President Georges Pompidou (1); political opposition figures (1); opinion of Prime Minister Harold Wilson (1); opinion of President Lyndon Johnson (1); side with U.S. or U.S.S.R (1); trust in U.S. (1); French and American interests (1); French and British interests (1); cooperative treaty with the U.S.S.R. (1); Vietnam (2); French nuclear capabilities (1); opinion of Pompidou's administration (2); opinion of Mr. Couve de Murville (1); opinion of Mr. Fouchet (1); opinion of Mr. Debre (1); opinion of General Charles de Gaulle (1); presidential candidates (1); legislative elections candidates (1).
Testing exoplanet evaporation with multi-transiting systems
Creators: name: Owen, James
name: Estrada, Beatriz Campos
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The photoevaporation model is one of the leading explanations for the evolution of small, close-in planets and the origin of the radius-valley. However, without planet mass measurements, it is challenging to test the photoevaporation scenario. Even if masses are available for individual planets, the host star's unknown EUV/X-ray history makes it difficult to assess the role of photoevaporation. We show that systems with multiple transiting planets are the best in which to rigorously test the photoevaporation model. By scaling one planet to another in a multi-transiting system, the host star's uncertain EUV/X-ray history can be negated. By focusing on systems that contain planets that straddle the radius-valley, one can estimate the minimum-masses of planets above the radius-valley (and thus are assumed to have retained a voluminous hydrogen/helium envelope). This minimum-mass is estimated by assuming that the planet below the radius-valley entirely lost its initial hydrogen/helium envelope, then calculating how massive any planet above the valley needs to be to retain its envelope. We apply this method to 104 planets above the radius gap in 73 systems for which precise enough radii measurements are available. We find excellent agreement with the photoevaporation model. Only two planets (Kepler - 100c & 142c) appear to be inconsistent, suggesting they had a different formation history or followed a different evolutionary pathway to the bulk of the population. Our method can be used to identify TESS systems that warrant radial-velocity follow-up to further test the photoevaporation model.
description: Accepted for publication in MNRAS. The software to estimate minimum planet masses is publicly available at: https://github.com/jo276/EvapMass
An Analytic Boris Pusher for Plasma Simulation
Creators: name: Decyk, Viktor K.
name: Mori, Warren B.
name: Li, Fei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: This paper discusses how to improve the Boris pusher used to advance relativistic charged particles in fixed electromagnetic fields. We first derive a simpler solution to a flaw previously discovered by others. We then derive a new analytic Boris pusher that is a minor modification to the original split-time scheme, except for the calculation of γ. This analytic pusher assumes that the change of γ during a particle advance is small. It is less accurate than the pusher derived by Fei Li et. al., but is nearly twice as fast. We will discuss when it is advantageous and when it is not.
description: 15 pages, 4 figures
Additional file 1 of Movement patterns of juvenile Atlantic tarpon (Megalops atlanticus) in Brewers Bay, St. Thomas, U.S. Virgin Islands
Creators: name: Romero, Mareike D. Duffing
name: Matley, Jordan K.
name: Jiangang Luo
name: Ault, Jerald S.
name: Pittman, Simon J.
name: Nemeth, Richard S.
Publisher: name: figshare
Year: 2021
Subjects: subject: Ecology
subject: FOS: Biological sciences

description: Additional file 1: Table S1. Summary data for vertical distribution (m) of juvenile tarpon from box plot analysis.
Comparative numerical study of Anderson localization in disordered electron systems
Creators: name: Schubert, Gerald
name: Weisse, Alexander
name: Wellein, Gerhard
name: Fehske, Holger
Publisher: name: arXiv
Year: 2003
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Taking into account that a proper description of disordered systems should focus on distribution functions, the authors develop a powerful numerical scheme for the determination of the probability distribution of the local density of states (LDOS), which is based on a Chebyshev expansion with kernel polynomial refinement and allows the study of large finite clusters (up to $100^3$). For the three-dimensional Anderson model it is demonstrated that the distribution of the LDOS shows a significant change at the disorder induced delocalisation-localisation transition. Consequently, the so-called typical density of states, defined as the geometric mean of the LDOS, emerges as a natural order parameter. The calculation of the phase diagram of the Anderson model proves the efficiency and reliability of the proposed approach in comparison to other localisation criteria, which rely, e.g., on the decay of the wavefunction or the inverse participation number.
description: 13 pages, 10 figures
New electromagnetic conservation laws
Creators: name: Bergqvist, G.
name: Eriksson, I.
name: Senovilla, J. M. M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Chevreton superenergy tensor was introduced in 1964 as a counterpart, for electromagnetic fields, of the well-known Bel-Robinson tensor of the gravitational field. We here prove the unnoticed facts that, in the absence of electromagnetic currents, Chevreton's tensor (i) is completely symmetric, and (ii) has a trace-free divergence if Einstein-Maxwell equations hold. It follows that the trace of the Chevreton tensor is a rank-2, symmetric, trace-free, {\em conserved} tensor, which is different from the energy-momentum tensor, and nonetheless can be constructed for any test Maxwell field, or any Einstein-Maxwell spacetime.
description: 6 pages
Nealcidion adjunctum
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Nealcidion
Nealcidion adjunctum

description: 1. Nealcidion adjunctum (Thomson, 1865)
Type locality — Costa Rica. (MNHN). Distribution — Costa Rica, Panama.
 Alcidion adjunctum Thomson, 1865: 544; 1878: 15 (type); Bates, 1881a: 157 (distr.); Pittier & Biolley, 1895: 28 (distr.).
 Nealcidion adjunctum; Monné, 1977: 700; Chemsak et al., 1992: 143 (cat.).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
Additional file 1 of The efficacy of recombinant human soluble thrombomodulin (rhsTM) treatment for acute exacerbation of idiopathic pulmonary fibrosis: a systematic review and meta-analysis
Creators: name: Kamiya, Hiroyuki
name: Ogee Panlaqui
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1. Search terms for each electronic database.
Conditional Variational Image Deraining
Creators: name: Du, Ying-Jun
name: Xu, Jun
name: Zhen, Xian-Tong
name: Cheng, Ming-Ming
name: Shao, Ling
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Image deraining is an important yet challenging image processing task. Though deterministic image deraining methods are developed with encouraging performance, they are infeasible to learn flexible representations for probabilistic inference and diverse predictions. Besides, rain intensity varies both in spatial locations and across color channels, making this task more difficult. In this paper, we propose a Conditional Variational Image Deraining (CVID) network for better deraining performance, leveraging the exclusive generative ability of Conditional Variational Auto-Encoder (CVAE) on providing diverse predictions for the rainy image. To perform spatially adaptive deraining, we propose a spatial density estimation (SDE) module to estimate a rain density map for each image. Since rain density varies across different color channels, we also propose a channel-wise (CW) deraining scheme. Experiments on synthesized and real-world datasets show that the proposed CVID network achieves much better performance than previous deterministic methods on image deraining. Extensive ablation studies validate the effectiveness of the proposed SDE module and CW scheme in our CVID network. The code is available at \url{https://github.com/Yingjun-Du/VID}.
description: 14pages, 11 figures, 5 tables, newly accepted by TIP
Sub-milliarcsecond Imaging of Quasars and Active Galactic Nuclei III. Kinematics of Parsec-Scale Radio Jets
Creators: name: Kellermann, K. I.
name: Lister, M. L.
name: Homan, D. C.
name: Vermeulen, R. C.
name: Cohen, M. H.
name: Ros, E.
name: Kadler, M.
name: Zensus, J. A.
name: Kovalev, Y. Y.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the results of a 15 GHz (2 cm) multi-epoch VLBA program, begun in 1994 to study the outflow in radio jets ejected from quasars and active galaxies. The observed flow of 208 distinct features measured in 110 quasars, active galaxies, and BL Lac objects shows highly collimated relativistic motion with apparent transverse velocities typically between zero and about 15c, with a tail extending up to about 34c. Within individual jets, different features appear to move with a similar characteristic velocity which may represent an underlying continuous jet flow, but we also see some stationary and even apparently inward moving features which co-exist with the main features. Comparison of our observations with published data at other wavelengths suggests that there is a systematic decrease in apparent velocity with increasing wavelength, probably because the observations at different wavelengths sample different parts of the jet structure. The observed distribution of linear velocities is not consistent with any simple ballistic model. Either there is a rather broad range of Lorentz factors, a significant difference between the velocity of the bulk relativistic flow and the pattern speed of underlying shocks, or a combination of these options. Assuming a ballistic flow, comparison of observed apparent velocities and Doppler factors computed from the time scale of flux density variations is consistent with a steep power law distribution of intrinsic Lorentz factors, an isotropic distribution of orientations of the parent population, and intrinsic brightness temperatures about an order of magnitude below the canonical inverse Compton limit. It appears that the parent population of radio jets is not dominated by highly relativistic flows (abridged).
description: 25 pages, 11 figures, 3 tables, accepted for publication in the Astrophysical Journal
Internalizing Health Effects of Pesticides
Creators: name: Howitt, Richard E.
name: Moore, Charles V.
name: Howitt, Richard E.
name: Moore, Charles V.
Publisher: name: Unknown
Year: 1975
Subjects: Health Economics and Policy

description: Survey of 1416 California farm workers indicated sigr1ificant underreporting of pesticide injuries in official information sources. Institutions for internalization of externalities are operating inefficiently due to an imprecise data problem. Seventy percent of farm workers had never heard of Workmans' Insurance, and 20 percent .. could not understand pesticide warning labels.
Probing the initial conditions of high-mass star formation -- IV. Gas dynamics and NH$_2$D chemistry in high-mass precluster and protocluster clumps
Creators: name: Zhang, Chuan-Peng
name: Li, Guang-Xing
name: Pillai, Thushara
name: Csengeri, Timea
name: Wyrowski, Friedrich
name: Menten, Karl M.
name: Pestalozzi, Michele R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The initial stage of star formation is a complex area study because of its high density and low temperature. Under such conditions, many molecules become depleted from the gas phase by freezing out onto dust grains. However, the deuterated species could remain gaseous and are thus ideal tracers. We investigate the gas dynamics and NH$_2$D chemistry in eight massive pre/protocluster clumps. We present NH$_2$D 1$_{11}$-1$_{01}$ (at 85.926 GHz), NH$_3$ (1, 1) and (2, 2) observations in the eight clumps using the PdBI and the VLA, respectively. We find that the distribution between deuterium fractionation and kinetic temperature shows a number density peak at around $T_{\rm kin}=16.1$ K, and the NH$_2$D cores are mainly located at a temperature range of 13.0 to 22.0 K. We detect seven instances of extremely high deuterium fractionation of $1.0 \leqslant D_{\rm frac} \leqslant 1.41$. We find that the NH$_2$D emission does not appear to coincide exactly with either dust continuum or NH$_3$ peak positions, but often surrounds the star-formation active regions. This suggests that the NH$_{2}$D has been destroyed by the central young stellar object (YSO) due to its heating. The detected NH$_2$D lines are very narrow with a median width of $\rm 0.98\pm0.02 km/s$. The extracted NH$_2$D cores are gravitationally bound ($α_{\rm vir} < 1$), are likely prestellar or starless, and can potentially form intermediate-mass or high-mass stars. Using NH$_3$ (1, 1) as a dynamical tracer, we find very complicated dynamical movement, which can be explained by a combined process with outflow, rotation, convergent flow, collision, large velocity gradient, and rotating toroids. High deuterium fractionation strongly depends on the temperature condition. NH$_2$D is a poor evolutionary indicator of high-mass star formation in evolved stages, but a useful tracer in the starless and prestellar cores.
description: 27 pages, 25 figures, 6 tables, accepted for publication in A&A
Taming the alpha-vacuum
Creators: name: Collins, Hael
name: Holman, R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: An interacting scalar field theory in de Sitter space is non-renormalizable for a generic alpha-vacuum state. This pathology arises since the usual propagator used allows for a constructive interference among propagators in loop corrections, which produces divergences that are not proportional to standard counterterms. This interference can be avoided by defining a new propagator for the alpha-vacuum based on a generalized time-ordering prescription. The generating functional associated with this propagator contains a source that couples to the field both at a point and at its antipode. To one loop order, we show that a set of theories with very general antipodal interactions is causal and renormalizable.
description: 13 pages, 5 figures, uses ReVTeX
The Atmospheric Circulation of Ultra-hot Jupiters
Creators: name: Tan, Xianyu
name: Komacek, Thaddeus D.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Recent observations of ultra-hot Jupiters with dayside temperatures in excess of $2500~\mathrm{K}$ have found evidence for new physical processes at play in their atmospheres. In this work, we investigate the effects of the dissociation of molecular hydrogen and recombination of atomic hydrogen on the atmospheric circulation of ultra-hot Jupiters. To do so, we incorporate these effects into a general circulation model (GCM) for hot Jupiter atmospheres, and run a large suite of models varying the incident stellar flux, rotation period, and strength of frictional drag. We find that including hydrogen dissociation and recombination reduces the fractional day-to-night temperature contrast of ultra-hot Jupiter atmospheres and causes the speed of the equatorial jet to decrease in simulations with fixed rotation. This is because the large energy input required for hydrogen dissociation cools the dayside of the planet, and the energy released due to hydrogen recombination warms the nightside. The resulting decrease in the day-to-night temperature contrast reduces the day-to-night pressure gradient that drives the circulation, resulting in weaker wind speeds. The results from our GCM experiments qualitatively agree with previous theory which found that the fractional day-night temperature contrast of ultra-hot Jupiters should decrease with increasing equilibrium temperature due to hydrogen dissociation and recombination. Lastly, we compute full-phase light curves from our suite of GCM experiments, finding that the reduced day-to-night temperature contrast in ultra-hot Jupiter atmospheres causes a smaller phase curve amplitude. The reduction in phase curve amplitude due to hydrogen dissociation and recombination could explain the relatively small phase curve amplitudes of observed ultra-hot Jupiters.
description: 22 pages, 12 figures, accepted to ApJ
Accretion of a giant planet onto a white dwarf
Creators: name: Gaensicke, Boris T.
name: Schreiber, Matthias R.
name: Toloza, Odette
name: Fusillo, Nicola P. Gentile
name: Koester, Detlev
name: Manser, Christopher J.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The detection of a dust disc around G29-38 and transits from debris orbiting WD1145+017 confirmed that the photospheric trace metals found in many white dwarfs arise from the accretion of tidally disrupted planetesimals. The composition of these planetesimals is similar to that of rocky bodies in the inner solar system. Gravitationally scattering planetesimals towards the white dwarf requires the presence of more massive bodies, yet no planet has so far been detected at a white dwarf. Here we report optical spectroscopy of a $\simeq27\,750$K hot white dwarf that is accreting from a circumstellar gaseous disc composed of hydrogen, oxygen, and sulphur at a rate of $\simeq3.3\times10^9\,\mathrm{g\,s^{-1}}$. The composition of this disc is unlike all other known planetary debris around white dwarfs, but resembles predictions for the makeup of deeper atmospheric layers of icy giant planets, with H$_2$O and H$_2$S being major constituents. A giant planet orbiting a hot white dwarf with a semi-major axis of $\simeq15$ solar radii will undergo significant evaporation with expected mass loss rates comparable to the accretion rate onto the white dwarf. The orbit of the planet is most likely the result of gravitational interactions, indicating the presence of additional planets in the system. We infer an occurrence rate of spectroscopically detectable giant planets in close orbits around white dwarfs of $\simeq10^{-4}$.
description: Nature, December 5 issue
Nealcidion albatum Monne & Delfino 1986
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Nealcidion
Nealcidion albatum

description: 2. Nealcidion albatum Monné & Delfino, 1986
Type locality — Brazil, Amazonas: Tabatinga. (MNRJ). Distribution — Ecuador, Brazil (Amazonas).
 Nealcidion albatum Monné & Delfino, 1986: 172, fig. 5; Julio et al., 2000: 42 (holotype).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
Mean Field-based Dynamic Backoff Optimization for MIMO-enabled Grant-Free NOMA in Massive IoT Networks
Creators: name: Wang, Haibo
name: Gao, Hongwei
name: Jiang, Pai
name: De Mari, Matthieu
name: Gu, Panzer
name: Liu, Yinsheng
Publisher: name: arXiv
Year: 2024
Subjects: subject: Systems and Control (eess.SY)
subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In the 6G Internet of Things (IoT) paradigm, unprecedented challenges will be raised to provide massive connectivity, ultra-low latency, and energy efficiency for ultra-dense IoT devices. To address these challenges, we explore the non-orthogonal multiple access (NOMA) based grant-free random access (GFRA) schemes in the cellular uplink to support massive IoT devices with high spectrum efficiency and low access latency. In particular, we focus on optimizing the backoff strategy of each device when transmitting time-sensitive data samples to a multiple-input multiple-output (MIMO)-enabled base station subject to energy constraints. To cope with the dynamic varied channel and the severe uplink interference due to the uncoordinated grant-free access, we formulate the optimization problem as a multi-user non-cooperative dynamic stochastic game (MUN-DSG). To avoid dimensional disaster as the device number grows large, the optimization problem is transformed into a mean field game (MFG), and its Nash equilibrium can be achieved by solving the corresponding Hamilton-Jacobi-Bellman (HJB) and Fokker-Planck-Kolmogorov (FPK) equations. Thus, a Mean Field-based Dynamic Backoff (MFDB) scheme is proposed as the optimal GFRA solution for each device. Extensive simulation has been fulfilled to compare the proposed MFDB with contemporary random access approaches like access class barring (ACB), slotted-Additive Links On-line Hawaii Area (ALOHA), and minimum backoff (MB) under both static and dynamic channels, and the results proved that MFDB can achieve the least access delay and cumulated cost during multiple transmission frames. Keywords: 6G; Internet of Things; grant-free random access; NOMA; dynamic backoff
description: 31 pages, 13 figures
Probing the presence of a single or binary black hole in the globular cluster NGC 6752 with pulsar dynamics
Creators: name: Colpi, Monica
name: Mapelli, Michela
name: Possenti, Andrea
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The five millisecond pulsars that inhabit NGC 6752 display locations or accelerations that are quite unusual compared to all other pulsars known in globular clusters. In particular PSR-A, a binary pulsar, lives in the cluster halo, while PSR-B and PSR-E, located in the core, show remarkably high negative spin derivatives. This is suggestive that some uncommon dynamical process is at play in the cluster core that we attribute to the presence of a massive perturber. We here investigate whether a single intermediate-mass black hole, lying on the extrapolation of the Mass versus Sigma relation observed in galaxy spheroids, or a less massive binary consisting of two black holes could play the requested role. To this purpose we simulated binary-binary encounters involving PSR-A, its companion star, and the black hole(s). Various scenarios are discussed in detail. In our close 4-body encounters, a black hole-black hole binary may attract on a long-term stable orbit a millisecond pulsar. Timing measurements on the captured satellite-pulsar, member of a hierarchical triplet, could unambiguously unveil the presence of a black hole(s) in the core of a globular cluster.
description: 13 pages, 8 figures, Accepted for publication in The Astrophysical Journal
Experimental Observation of High Intrinsic Thermal Conductivity of AlN
Creators: name: Cheng, Zhe
name: Koh, Yee Rui
name: Mamun, Abdullah
name: Shi, Jingjing
name: Bai, Tingyu
name: Huynh, Kenny
name: Yates, Luke
name: Liu, Zeyu
name: Li, Ruiyang
name: Lee, Eungkyu
name: Liao, Michael
name: Wang, Yekan
name: Yu, Hsuan Ming
name: Kushimoto, Maki
name: Luo, Tengfei
name: Goorsky, Mark S.
name: Hopkins, Patrick E.
name: Amano, Hiroshi
name: Khan, Asif
name: Graham, Samuel
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: AlN is an ultra-wide bandgap semiconductor which has been developed for applications including power electronics and optoelectronics. Thermal management of these applications is the key for stable device performance and allowing for long lifetimes. AlN, with its potentially high thermal conductivity, can play an important role serving as a dielectric layer, growth substrate, and heat spreader to improve device performance. However, the intrinsic high thermal conductivity of bulk AlN predicted by theoretical calculations has not been experimentally observed because of the difficulty in producing materials with low vacancy and impurity levels, and other associated defect complexes in AlN which can decrease the thermal conductivity. This work reports the growth of thick AlN layers by MOCVD with an air-pocketed AlN layer and the first experimental observation of intrinsic thermal conductivity from 130 K to 480 K that matches density-function-theory calculations for single crystal AlN, producing some of the highest values ever measured. Detailed material characterizations confirm the high quality of these AlN samples with one or two orders of magnitude lower impurity concentrations than seen in commercially available bulk AlN. Measurements of these commercially available bulk AlN substrates from 80 K to 480 K demonstrated a lower thermal conductivity, as expected. A theoretical thermal model is built to interpret the measured temperature dependent thermal conductivity. Our work demonstrates that it is possible to obtain theoretically high values of thermal conductivity in AlN and such films may impact the thermal management and reliability of future electronic and optoelectronics devices.
Nealcidion alboplagiatum
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Nealcidion
Nealcidion alboplagiatum

description: 3. Nealcidion alboplagiatum (Martins & Monné, 1974)
Type locality — Brazil, Espírito Santo: Linhares. (MZSP). Distribution — Brazil (Espírito Santo).
 Alcidion alboplagiatum Martins & Monné, 1974b: 321, fig. 3.
 Nealcidion alboplagiatum; Monné, 1977: 700.
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
Mangrove Carbon Stock Field Protocols
Creators: name: Morrissette, Hannah
name: Wolfe, Jaxine
Publisher: name: Smithsonian Environmental Research Center
Year: 2024
Subjects: classificationCode: 370203
subject: Greenhouse gas inventories and fluxes
classificationCode: 410101
subject: Carbon sequestration science

description: These field protocols contain the guidance and materials needed to design and conduct a mangrove carbon stock assessment in accordance with international standards of practice. Spreadsheets are configured to generate calculations of stock for soil and vegetation carbon pools, as well as total ecosystem carbon (TEC). These protocols are standard operating protocols distilled from the methodology put forth by the Blue Carbon Manual (Howard et al. 2014).The authors of this resource acknowledge that these protocols are not yet comprehensive of all existing methodologies or ecosystems and welcome any input on how to improve upon these materials.
Nealcidion bispinum
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Nealcidion
Nealcidion bispinum

description: 8. Nealcidion bispinum (Bates, 1863)
Type locality — Brazil, Rio de Janeiro. (MNHN). Distribution — Brazil (Bahia to Rio Grande do Sul), Argentina.
 Alcidion bispinum Bates, 1863: 105; Bruch, 1912: 214 (cat.); Bondar, 1925a: 81 (hosts); 1939b: 63 (hosts); Zikán & Zikán, 1944: 36 (distr.); Zajciw, 1958a: 19 (distr.); Buck, 1959: 605 (distr.); Duffy, 1960: 259 (larva, pupa); Silva et al., 1968: 398 (hosts); Zajciw & Seabra, 1968: 71 (distr.); Zajciw, 1972a: 63 (distr.).
 Nealcidion bispinum; Monné, 1977: 700; 2001b: 22 (cat. hosts).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553
Do Marketing Margins Change with Food Scares? Examining the Effects of Food Recalls and Disease Outbreaks in the U.S. Red Meat Industry
Creators: name: Capps, Oral
name: Colin-Castillo, Sergio
name: Hernandez, Manuel A.
name: Capps, Oral
name: Colin-Castillo, Sergio
name: Hernandez, Manuel A.
Publisher: name: Unknown
Year: 2013
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Marketing
subject: FOS: Economics and business

description: This study examines the impact of different food scare events on marketing margins in the U.S. beef and pork industries. The authors analyze how market stresses induced by the Food Safety Inspection Service (FSIS) recalls and bovine spongiform encephalopathy (BSE) outbreaks affect price spreads and the extent of price transmission at the slaughter-to-wholesale and wholesale-to-retail levels. They use monthly national data for the period 1986–2008, which includes records of FSIS recalls of varying severity and BSE events in the United States and Canada. The authors account for immediate and delayed effects of food scares and for potential cross effects across industries and countries. The results indicate that beef and food recalls do not affect their corresponding price margins and overall food safety incidents have minor cross-industry and cross-country effects. However, BSE discoveries in the United States considerably affect marketing margins in the beef industry, particularly at the wholesale-to-retail level. Interestingly, subsequent discoveries had smaller impacts on price margins. Bovine spongiform encephalopathy outbreaks also appear to affect the extent of price transmission between wholesalers and retailers. [EconLit classifications: Q13, L11, L13]. C 2013 Wiley Periodicals, Inc.
title: A Neural Network Based Strategy for Robot Navigation in Dynamic Environments
Creators: name: Meng, Hua
Publisher: name: The Open University
Year: 1993

description: This thesis studies the problem of robot navigation in the presence of unexpected environmental changes, which include unknown static obstacles and moving objects with unknown trajectories. Throughout this work, neural networks, as a new technique, are used to develop the functional components, which constitute the proposed navigation strategy. The neural network based navigation strategy we propose follows a two-level hierarchy and operates by integrating three network components (planner, navigator and predictor). At the higher level, the planner generates a nominal path from the initial position to the goal among the fixed known obstacles. At the lower level, the navigator incorporates the predictor to refine the coarse path by taking into account unexpected environment changes to achieve on line real-time guidance.

 During this research, three neural network components were developed. The path planner was developed first by using a three-layer feedforward network to optimize the cost (collision penalty) function of a path. The first version of the navigator - Navigator-1 - was then implemented using a multilayer feedforward network in which steering commands for static obstacle avoidance were generated by directly converting sensor reading through the network. To enable the navigator to handle moving objects with unknown trajectories, on-line motion prediction was introduced. The predictor was developed using an Elman recurrent net. Following that, an enhanced version of the Navigator-1 - Navigator-2 - was developed using a structured network in which three sub-nets were used - two of the sub-nets were used to realise dynamic obstacle avoidance and static obstacle avoidance respectively, and the third sub-net was used to make final steering decision by reconciling the results from those two sub-nets. Finally, the overall navigation strategy was implemented in a simulation system. Simulations showed encouraging results. It demonstrates that the neural network based strategy is capable of achieving adaptive navigation in the presence of unexpected environmental changes.
L'effet de l'autoregulation des erreurs persistantes sur l'écriture des élèves française
Creators: name: Poirier, Nadia
Publisher: name: The University of British Columbia
Year: 2014

description: Dans une classe typique d'immersion française en Colombie-Britannique, on voit souvent comment les erruers provenant d'anglicisme se transferent dans l'écriture des nos élèves. Mais la grande question à se poser est comment changer les attitudes des élèves envers la correction de l'écrit. Les outils de correction spécifiques qu'on trouve dans une salle de classe - les dictionnaires, les livres de conjugaison (Berscherelle) - ne sont pas toujours faciles à employer. En particulier pour les élèves plus jeunes, l'utilisation de ceux-ci peut-être décourageante. Afin d'améliorer l'écriture des élèves en immersion, it faut trouver et établir un sysème de correction qui encourage les élèves à s'auto-corriger et à s'auto-régler selon les stratégies qui leur sont pertinentes à travers des styles d'apprentissage et non pas basés principalement sur la mémorisation des règles de grammaire. Au début de ce project de recherche, mon objectif était de voir comment la création des ressources créatives pourrait encourager mes élèves de 6e année à chercher et à corriger les erreurs communes dans leur propre écriture et dans les travaux de leurs pairs. Est-ce que l'usage des ressources créés par eux-mêmes les motivera à corriger leurs erreurs à l'écrit? Après quelques mois, il était évident que certains aspects de cette stratégie de différenciation se sont révélés efficaces : les élèves ont créé des ressources de référence basées sur leurs propres erreurs et selon leurs styles d'apprentissage. Par conséquent, ils étaient plus motivés à utiliser leurs projets comme outils de correction que les autres ressources disponibles dans la salle de classe. Ce mémoire vise à montrer comment les stratégies d'enseignement employées affectaient la motivation de mes élèves à s'auto-corriger leurs travaux écrits et, parallèlement, à améliorer la qualité de leur écriture.
Mass-Metallicity and Star Formation Rate in Galaxies: a complex relation tuned to stellar age
Creators: name: Puertas, S. Duarte
name: Vilchez, J. M.
name: Iglesias-Páramo, J.
name: Mollá, M.
name: Pérez-Montero, E.
name: Kehrig, C.
name: Pilyugin, L. S.
name: Zinchenko, I. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this work we study the stellar mass -- metallicity relation (MZR) of an extended sample of star-forming galaxies in the local Universe and its possible dependence with the star formation rate (SFR). A sample of $\sim$195000 Sloan Digital Sky Survey (SDSS) star-forming galaxies has been selected up to z=0.22 with the aim of analysing the behaviour of the relation of MZR with respect to SFR and taking into account the age of their stellar populations. For this sample we have obtained, for the first time, aperture corrected oxygen and nitrogen-to-oxygen abundances (O/H and N/O, respectively) and SFR using the empirical prescriptions from the Calar Alto Legacy Integral Field Area (CALIFA) survey. To perform this study we make use also of the stellar mass of the galaxies and the parameter Dn(4000) as a proxy of the age of the stellar population. We derive a robust MZR locus, which is found to be fully consistent with the "anchoring" points of a selected set of well studied nearby galaxies with a direct derivation of the chemical abundance. A complex relation between MZR and SFR across the whole range of galaxy mass and metallicity has been observed, where the slope changes seen in the O/H -- SFR plane present a pattern which seems to be tuned to the galaxies' stellar age, and therefore, stellar age has to be taken into account in the stellar mass -- metallicity -- SFR relation. In order to provide an answer to the question of whether or not the MZR depends on the SFR it is essential to take into account the age of the stellar populations of galaxies. A strong dependence between the MZR and SFR is observed mainly for star-forming galaxies with strong SFR values and low Dn(4000). The youngest galaxies of our SDSS sample show the highest SFR measured for their stellar mass.
description: Accepted for publication in A&A, 18 pages, 13 figures, and 1 table
Supervised Hyperalignment for multi-subject fMRI data alignment
Creators: name: Yousefnezhad, Muhammad
name: Selvitella, Alessandro
name: Han, Liangxiu
name: Zhang, Daoqiang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Hyperalignment has been widely employed in Multivariate Pattern (MVP) analysis to discover the cognitive states in the human brains based on multi-subject functional Magnetic Resonance Imaging (fMRI) datasets. Most of the existing HA methods utilized unsupervised approaches, where they only maximized the correlation between the voxels with the same position in the time series. However, these unsupervised solutions may not be optimum for handling the functional alignment in the supervised MVP problems. This paper proposes a Supervised Hyperalignment (SHA) method to ensure better functional alignment for MVP analysis, where the proposed method provides a supervised shared space that can maximize the correlation among the stimuli belonging to the same category and minimize the correlation between distinct categories of stimuli. Further, SHA employs a generalized optimization solution, which generates the shared space and calculates the mapped features in a single iteration, hence with optimum time and space complexities for large datasets. Experiments on multi-subject datasets demonstrate that SHA method achieves up to 19% better performance for multi-class problems over the state-of-the-art HA algorithms.
description: IEEE Transactions on Cognitive and Developmental Systems
Self-Averaged Scaling Limits for Random Parabolic Waves
Creators: name: Fannjiang, Albert C.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider 6 types of scaling limits for the Wigner-Moyal equation of the parabolic waves in random media, the limiting cases of which include the radiative transfer limit, the diffusion limit and the white-noise limit. We show under fairly general assumptions on the random refractive index field that sufficient amount of medium diversity (thus excluding the white-noise limit) leads to statistical stability or self-averaging in the sense that the limiting law is deterministic and is governed by various transport equations depending on the specific scaling involved. We obtain 6 different radiative transfer equations as limits.
Interaction of higher-dimensional rotating black holes with branes
Creators: name: Frolov, Valeri P.
name: Fursaev, Dmitri V.
name: Stojkovic, Dejan
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study interaction of rotating higher dimensional black holes with a brane in space-times with large extra dimensions. We demonstrate that in a general case a rotating black hole attached to a brane can loose bulk components of its angular momenta. A stationary black hole can have only those components of the angular momenta which are connected with Killing vectors generating transformations preserving a position of the brane. In a final stationary state the null Killing vector generating the black hole horizon is tangent to the brane. We discuss first the interaction of a cosmic string and a domain wall with the 4D Kerr black hole. We then prove the general result for slowly rotating higher dimensional black holes interacting with branes. The characteristic time when a rotating black hole with the gravitational radius $r_0$ reaches this final stationary state is $T\sim r_0^{p-1}/(Gσ)$, where $G$ is the higher dimensional gravitational coupling constant, $σ$ is the brane tension, and $p$ is the number of extra dimensions.
description: Version published in Class. Quant. Grav
Nealcidion brachiale
Creators: name: Monné, Miguel A.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Nealcidion
Nealcidion brachiale

description: 9. Nealcidion brachiale (Bates, 1872)
Type locality — Nicaragua, Chontales. (BMNH). Distribution — Mexico (Veracruz) to Panama.
 Alcidion brachiale Bates, 1872: 214; 1881a: 157, pl. 12, fig. 13; 1885: 394 (distr.); Chemsak & Linsley, 1970: 407 (lect.).
 Nealcidion brachiale; Monné, 1977: 700; Chemsak et al., 1992: 143 (cat.); Maes et al., 1994: 46 (distr.); Noguera & Chemsak, 1996: 406 (cat.).
description: Published as part of Monné, Miguel A., 2005, Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae, pp. 1-760 in Zootaxa 1023 (1) on pages 1-760, DOI: 10.11646/zootaxa.946.1.1, http://zenodo.org/record/5049553