cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spin relaxation in a nanowire organic spin valve: Observation of extremely long spin relaxation times
Creators: name: Pramanik, S.
name: Stefanita, C-G.
name: Bandyopadhyay, S.
name: Garre, K.
name: Harth, N.
name: Cahay, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report spin valve behavior in an organic nanowire consisting of three layers - cobalt, Alq3 and nickel - all nominally 50 nm in diameter. Based on the data, we conclude that the dominant spin relaxation mechanism in Alq3 is the Elliott-Yafet mode. Despite the very short momentum relaxation time, the spin relaxation time is found to be very long - at least a few milliseconds - and relatively temperature independent up to 100 K. To our knowledge, this is the first demonstration of an organic nanoscale spin valve, as well as the first determination of the primary spin relaxation mechanism in organics. The unusually long spin relaxation time makes these materials ideal platforms for some areas of spintronics.
description: Resolution of some figures has suffered in an effort to reduce the file size
Nuclear Spin Gyroscope based on the Nitrogen Vacancy Center in Diamond
Creators: name: Soshenko, Vladimir V.
name: Bolshedvorskii, Stepan V.
name: Rubinas, Olga
name: Sorokin, Vadim N.
name: Smolyaninov, Andrey N.
name: Vorobyov, Vadim V.
name: Akimov, Alexey V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A rotation sensor is one of the key elements of inertial navigation systems and compliments most cellphone sensor sets used for various applications. Currently, inexpensive and efficient solutions are mechanoelectronic devices, which nevertheless lack long-term stability. Realization of rotation sensors based on spins of fundamental particles may become a drift-free alternative to such devices. Here, we carry out a proof-of-concept experiment, demonstrating rotation measurements on a rotating setup utilizing nuclear spins of an ensemble of NV centers as a sensing element with no stationary reference. The measurement is verified by a commercially available MEMS gyroscope.
Motion of four-dimensional rigid body around a fixed point: an elementary approach. I
Creators: name: Perelomov, A. M
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The goal of this note is to give the explicit solution of Euler-Frahm equations for the Manakov four-dimensional case by elementary means. For this, we use some results from the original papers by Schottky [Sch 1891], Koetter [Koe 1892], Weber [We 1878], and Caspary [Ca 1893]. We hope that such approach will be useful for the solution of the problem of $n$-dimensional top.
description: LaTeX, 9 pages
Numerical modeling of cosmic rays in the heliosphere: Analysis of proton data from AMS-02 and PAMELA
Creators: name: Fiandrini, Emanuele
name: Tomassetti, Nicola
name: Bertucci, Bruna
name: Donnini, Federico
name: Graziani, Maura
name: Khiali, Behrouz
name: Conde, Alejandro Reina
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Galactic cosmic rays (CRs) inside the heliosphere are affected by solar modulation. To investigate this phenomenon and its underlying physical mechanisms, we have performed a data-driven analysis of the temporal dependence of the CR proton flux over the solar cycle. The modulation effect was modeled by means of stochastic simulations of cosmic particles in the heliosphere. The model were constrained using measurements of CR protons made by AMS-02 and PAMELA experiments on monthly basis from 2006 to 2017. With a global statistical analysis of these data, we have determined the key model parameters governing CR diffusion, its dependence on the particle rigidity, and its evolution over the solar cycle. Our results span over epochs of solar minimum, solar maximum, as well as epochs with magnetic reversal and opposite polarities. Along with the evolution of the CR transport parameters, we study their relationship with solar activity proxies and interplanetary parameters. We find that the rigidity dependence of the parallel mean free path of CR diffusion shows a remarkable time dependence, indicating a long-term variability in the interplanetary turbulence that interchanges across different regimes over the solar cycle. The evolution of the diffusion parameters show a delayed correlation with solar activity proxies, reflecting the dynamics of the heliospheric plasma, and distinct dependencies for opposite states of magnetic polarity, reflecting the influence of charge-sign dependent drift in the CR modulation.
description: 20 pages, 14 figures, to appear in Physical Review D
ECONOMIC IMPLICATIONS OF THE FAIR ACT ON U.S. PEANUT PRODUCERS
Creators: name: Chen, Changping
name: Fletcher, Stanley M.
name: Chen, Changping
name: Fletcher, Stanley M.
Publisher: name: Unknown
Year: 1997
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: economic impacts
subject: FAIR Act
subject: peanuts
subject: quota
subject: support price

description: This study analyzed the potential economic impacts of the FAIR Act under GATT and NAFTA on the U.S. peanut industry. Results indicate that the economic impacts of the new program combined with the trade agreements are profound on the peanut industry in both short and long terms. Changes of the peanut program could decrease peanut producers' farm income substantially, eliminate government financial costs related to excessive quotas, and transfer peanut growers' program benefits back to peanut consumers. Increasing imports of foreign peanuts due to free/reduced trade barrier agreements would transfer peanut producers' program benefits to domestic peanut importers and foreign exporters who sell peanuts to the U.S. Note: Tables 3 and 4 not included in machine readable file--contact authors for copies.
Composição do ecossistema da educação aberta brasileira: tendências atuais e elementos constituintes
Creators: name: Vieira Dann, Eva Priscila
name: Groposo Pavão, Caterina
Publisher: name: Zenodo
Year: 2024

description: Apresentação realizada na sessão “O meu Póster em 1 minuto”, da 15ª Conferência Lusófona de Ciência Aberta, na Escola Superior de Enfermagem do Porto (ESEP), de 01 a 04 de outubro de 2024.
Brittle Crack Roughness in Three-Dimensional Beam Lattices
Creators: name: Skjetne, Bjorn
name: Helle, Torbjorn
name: Hansen, Alex
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The roughness exponent is reported in numerical simulations with a three-dimensional elastic beam lattice. Two different types of disorder have been used to generate the breaking thresholds, i.e., distributions with a tail towards either strong or weak beams. Beyond the weak disorder regime a universal exponent of 0.59(1) is obtained. This is within the range 0.4-0.6 reported experimentally for small scale quasi-static fracture, as would be expected for media with a characteristic length scale.
description: 4 pages and 6 figures
Electronic Supplementary Material: Methods, Figures, Tables from Coupled social and ecological change drove the historical extinction of the California grizzly bear (Ursus arctos californicus)
Creators: name: Mychajliw, Alexis M.
name: Adams, Andrea J.
name: Brown, Kevin C.
name: Campbell, Beau T.
name: Hardesty-Moore, Molly
name: Welch, Zoë S.
name: Page, Henry M.
name: Southon, John R.
name: Cooper, Scott D.
name: Alagona, Peter S.
Publisher: name: The Royal Society
Year: 2023
Subjects: classificationCode: 370506
subject: Palaeontology (incl. palynology)

description: Supplementary methods, figures, tables, & references as called out in the main text.
WHOLESALER MARKUP DECISIONS UNDER DEMAND UNCERTAINTY
Creators: name: Park, Timothy A.
name: Lohr, Luanne
name: Park, Timothy A.
name: Lohr, Luanne
Publisher: name: Unknown
Year: 1996
Subjects: subject: Demand and Price Analysis
subject: Risk and Uncertainty
subject: risk aversion
subject: marketing margins
subject: comparative statics
subject: organics

description: We examine consistency with economic theory of markup decisions for a risk averse firm facing demand uncertainty. We derive testable comparative static results that describe the influence on the markup of expected demand, demand uncertainty, average variable costs and exogenous demand shifters. We test the model using data from the wholesale market for organic lettuce. Our results demonstrated that risk averse wholesalers raise markups as expected demand increases and reduce them as uncertainty increases.
Permutation invariant strong law of large numbers for exchangeable sequences
Creators: name: Tappe, Stefan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We provide a permutation invariant version of the strong law of large numbers for exchangeable sequences of random variables. The proof consists of a combination of the Komlós-Berkes theorem, the usual strong law of large numbers for exchangeable sequences and de Finetti's theorem.
description: 6 pages
The Impact of Corequisite Math on Community College Student Outcomes: Evidence from Texas
Creators: name: Meiselman, Akiva Yonah
name: Schudde, Lauren
Publisher: name: The University of Texas at Austin
Year: 2020
Subjects: Developmental education, community college, corequisites, dev-ed reform, college math, higher education, policy analysis, regression discontinuity

description: Developmental education (dev-ed) aims to help students acquire knowledge and skills necessary to succeed in college-level coursework, but the traditional prerequisite approach to dev-ed—where students take courses that do not count toward a credential—appears to stymie progress toward a degree. Corequisite remediation is a structural reform that places students directly into a college-level course in the same term they receive dev-ed support. Using state administrative data from Texas community colleges and a regression discontinuity design, we examine whether taking corequisite math improves student success compared with traditional prerequisite dev-ed. We find that corequisite math quickly improves student completion of math requirements without any obvious drawbacks. Although additional follow-up may be necessary to understand long-term effects (given generally low degree attainment in the current follow-up window), we find that students in corequisite math were not substantially closer to degree completion than their peers in traditional dev-ed within 3 years.
Electronic properties of EuB6 in the ferromagnetic regime: Half-metal versus semiconductor
Creators: name: Kreissl, M.
name: Nolting, W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: To understand the halfmetallic ferromagnet EuB6 we use the Kondo lattice model for valence and conduction band. By means of a recently developed many-body theory we calculate the electronic properties in the ferromagnetic regime up to the Curie temperature. The decreasing magnetic order induces a transition from halfmetallic to semiconducting behavior along with a band broadening. We show the temperature dependence of the quasiparticle density of states and the quasiparticle dispersion as well as the effective mass, the number of carriers and the plasma frequency which are in good agreement with the experimental data.
WOULD PEOPLE RATHER PAY TAXES OR TRADE TAXES TO PAY FOR ENVIRONMENTAL GOODS? A GROUND WATER QUALITY CASE
Creators: name: Bergstrom, John C.
name: Boyle, Kevin J.
name: Yabe, Mitsuyasu
name: Bergstrom, John C.
name: Boyle, Kevin J.
name: Yabe, Mitsuyasu
Publisher: name: Unknown
Year: 2002
Subjects: Environmental Economics and Policy
Public Economics

description: The potential sensitivity of environmental resource valuation to payment vehicles is of interest to researchers and decision-makers involved in estimating and applying these numbers. A conceptual model is developed which provides insight into how the different payment vehicles of a special tax and a tax reallocation affects the willingness to pay (WTP) for environmental goods. Hypothesis testing using contingent valuation data suggests WTP with a tax reallocation is higher than WTP with a special tax for ground water quality protection in Georgia and Maine.
Block what you can, except when you shouldn't
Creators: name: Pashley, Nicole E.
name: Miratrix, Luke W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Several branches of the potential outcome causal inference literature have discussed the merits of blocking versus complete randomization. Some have concluded it can never hurt the precision of estimates, and some have concluded it can hurt. In this paper, we reconcile these apparently conflicting views, give a more thorough discussion of what guarantees no harm, and discuss how other aspects of a blocked design can cost, all in terms of precision. We discuss how the different findings are due to different sampling models and assumptions of how the blocks were formed. We also connect these ideas to common misconceptions, for instance showing that analyzing a blocked experiment as if it were completely randomized, a seemingly conservative method, can actually backfire in some cases. Overall, we find that blocking can have a price, but that this price is usually small and the potential for gain can be large. It is hard to go too far wrong with blocking.
description: arXiv admin note: text overlap with arXiv:1710.10342
An Empirical Tight-Binding Model for Titanium Phase Transformations
Creators: name: Trinkle, D. R.
name: Jones, M. D.
name: Hennig, R. G.
name: Rudin, S. P.
name: Albers, R. C.
name: Wilkins, J. W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: For a previously published study of the titanium hcp (alpha) to omega (omega) transformation, a tight-binding model was developed for titanium that accurately reproduces the structural energies and electron eigenvalues from all-electron density-functional calculations. We use a fitting method that matches the correctly symmetrized wavefuctions of the tight-binding model to those of the density-functional calculations at high symmetry points. The structural energies, elastic constants, phonon spectra, and point-defect energies predicted by our tight-binding model agree with density-functional calculations and experiment. In addition, a modification to the functional form is implemented to overcome the "collapse problem" of tight-binding, necessary for phase transformation studies and molecular dynamics simulations. The accuracy, transferability and efficiency of the model makes it particularly well suited to understanding structural transformations in titanium.
description: 9 pages, 8 figures, 5 tables
Oort: Efficient Federated Learning via Guided Participant Selection
Creators: name: Lai, Fan
name: Zhu, Xiangfeng
name: Madhyastha, Harsha V.
name: Chowdhury, Mosharaf
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Federated Learning (FL) is an emerging direction in distributed machine learning (ML) that enables in-situ model training and testing on edge data. Despite having the same end goals as traditional ML, FL executions differ significantly in scale, spanning thousands to millions of participating devices. As a result, data characteristics and device capabilities vary widely across clients. Yet, existing efforts randomly select FL participants, which leads to poor model and system efficiency. In this paper, we propose Oort to improve the performance of federated training and testing with guided participant selection. With an aim to improve time-to-accuracy performance in model training, Oort prioritizes the use of those clients who have both data that offers the greatest utility in improving model accuracy and the capability to run training quickly. To enable FL developers to interpret their results in model testing, Oort enforces their requirements on the distribution of participant data while improving the duration of federated testing by cherry-picking clients. Our evaluation shows that, compared to existing participant selection mechanisms, Oort improves time-to-accuracy performance by 1.2x-14.1x and final model accuracy by 1.3%-9.8%, while efficiently enforcing developer-specified model testing criteria at the scale of millions of clients.
Riemannian Gaussian distributions, random matrix ensembles and diffusion kernels
Creators: name: Santilli, Leonardo
name: Tierz, Miguel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistics Theory (math.ST)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We show that the Riemannian Gaussian distributions on symmetric spaces, introduced in recent years, are of standard random matrix type. We exploit this to compute analytically marginals of the probability density functions. This can be done fully, using Stieltjes-Wigert orthogonal polynomials, for the case of the space of Hermitian matrices, where the distributions have already appeared in the physics literature. For the case when the symmetric space is the space of $m \times m$ symmetric positive definite matrices, we show how to efficiently compute by evaluating Pfaffians at specific values of $m$. Equivalently, we can obtain the same result by constructing specific skew orthogonal polynomials with regards to the log-normal weight function (skew Stieltjes-Wigert polynomials). Other symmetric spaces are studied and the same type of result is obtained for the quaternionic case. Moreover, we show how the probability density functions are a particular case of diffusion reproducing kernels of the Karlin-McGregor type, describing non-intersecting Brownian motions, which are also diffusion processes in the Weyl chamber of Lie groups.
description: 25 pages, 9 figures, 5 tables. v2: Some improvements made; published version
DYNAMIC EFFECTS OF PEANUT BUTTER ADVERTISING ON PEANUT BUTTER DEMAND
Creators: name: Deodhar, Satish Y.
name: Fletcher, Stanley M.
name: Deodhar, Satish Y.
name: Fletcher, Stanley M.
Publisher: name: Unknown
Year: 1998
Subjects: subject: Demand and Price Analysis
subject: Marketing
subject: FOS: Economics and business

description: Using error correction approach and nonlinear three-stage-squares, long-run and short-run effects of aggregate brand advertising on the U.S demand for peanut butter are estimated. Results indicate that demand for peanut butter is more responsive to advertising in the long-run. Moreover, demand is responsive to price only in the short-run.
Moyal Noncommutative Integrability and the Burgers-KdV Mapping
Creators: name: Sedra, M. B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Moyal momentum algebra is, once again, used to discuss some important aspects of NC integrable models and 2d conformal field theories. Among the results presented, we setup algebraic structures and makes useful convention notations leading to extract non trivial properties of the Moyal momentum algebra. We study also the Lax pair building mechanism for particular examples namely, the noncommutative KdV and Burgers systems. We show in a crucial step that these two systems are mapped to each others through a crucial mapping. This makes a strong constraint on the NC Burgers system which corresponds to linearizing its associated differential equation. From the conformal field theory point of view, this constraint equation is nothing but the analogue of the conservation law of the conformal current. We believe that this mapping might help to bring new insights towards understanding the integrability of noncommutative 2d-systems.
description: 35 pages
title: Geïdealiseerde processtudie van systeemovergangen naar hypertroebelheid: WP 1.5 Sedimentmodel met dynamische beschikbaarheid
Creators: name: Brouwer, R.L.
name: Schramkowski, George P.
Publisher: name: Flanders Hydraulics
Year: 2024

description: Title : WL Rapporten. Waterbouwkundig Laboratorium: Antwerpen.
Volume : 13_103_6
Issue :
Pagination : VIII, 42
Turricostellaria apyrahi Simone & Cunha 2012
Creators: name: Cavallari, Daniel C.
name: Dornellas, Ana Paula S.
name: Simone, Luiz Ricardo L.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Costellariidae
Turricostellaria
Turricostellaria apyrahi

description: apyrahi, Turricostellaria Simone & Cunha, 2012
 Turricostellaria apyrahi Simone & Cunha, 2012: 759 (fig. 5L–R).
Gastropoda, Costellariidae
 Paratype: MZSP 102862.
 Paratype: MZSP 102863.
 Locality: Brazil, Espírito Santo, off Itaúnas, Abrolhos Slope, 19°01' S, 37°47' W, MD55 sta. CB79, 1500–1575 m depth, 28 May 1987.
 Collectors: P. Bouchet, J.H. Leal and B. Métivier.
 Preservation: Dry.
 Remarks: Former MNHN, Paris.
description: Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on page 8, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/3840125
The Anatomy of Gauge/String Duality in Lunin-Maldacena Background
Creators: name: Chen, Heng-Yu
name: Okamura, Keisuke
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the correspondence between the spinning string solutions in Lunin-Maldacena background and the single trace operators in the Leigh-Strassler deformation of N=4 SYM. By imposing an appropriate rotating string ansätz on the Landau-Lifshitz reduced sigma model in the deformed SU(2) sector, we find two types of `elliptic' solutions with two spins, which turn out to be the solutions associated with the Neumann-Rosochatius system. We then calculate the string energies as functions of spins, and obtain their explicit forms in terms of a set of moduli parameters. On the deformed spin-chain side, we explicitly compute the one-loop anomalous dimensions of the gauge theory operators dual to each of the two types of spinning string solutions, extending and complementing the results of hep-th/0511164. Moreover, we propose explicit ansätze on how the locations of the Bethe strings are affected due to the deformation, with several supports from the string side.
description: 1+31 pages, 3 figures, references added, typos corrected, discussion on constraints and free parameters in spin-chain analysis added and corrected
The First Laser Guide Star Adaptive Optics Observations of the Galactic Center: Sgr A*'s Infrared Color and the Extended Red Emission in its Vicinity
Creators: name: Ghez, A. M.
name: Hornstein, S. D.
name: Lu, J.
name: Bouchez, A.
name: Mignant, D. Le
name: van Dam, M. A.
name: Wizinowich, P.
name: Matthews, K.
name: Morris, M.
name: Becklin, E. E.
name: Campbell, R. D.
name: Chin, J. C. Y.
name: Hartman, S. K.
name: Johansson, E. M.
name: Lafon, R. E.
name: Stomski, P. J.
name: Summers, D. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) We present the first Laser Guide Star Adaptive Optics (LGS-AO) observations of the Galactic center. LGS-AO has dramatically improved the quality, robustness, and versatility with which high angular resolution infrared images of the Galactic center can be obtained with the W. M. Keck II 10-meter telescope. Specifically, Strehl ratios of 0.7 and 0.3 at L'[3.8 micron] and K'[2.1 micron], respectively, are achieved in these LGS-AO images. During our observations, the infrared counterpart to the central supermassive black hole, Sgr A*-IR, showed significant infrared intensity variations, with observed L' magnitudes ranging from 12.6 to 14.5 mag. The faintest end of our L' detections, 1.3 mJy (dereddened), is the lowest level of emission yet observed for this source by a factor of 3. No significant variation in the location of SgrA*-IR is detected as a function of either wavelength or intensity. Near a peak in its intensity, we obtained the first measurement of SgrA*-IR's K'-L' color (3.0 +- 0.2 mag, observed), which corresponds to an intrinsic spectral index of -0.5 +- 0.3. This is significantly bluer than other recent infrared measurements. Because our measurement was taken at a time when Sgr A* was ~6 times brighter in the infrared than the other measurements, we posit that the spectral index of the emission arising from the vicinity of our Galaxy's central black hole may depend on the strength of the flare, with stronger flares giving rise to a higher fraction of high energy electrons in the emitting region.
description: Accepted for publication in ApJ (to appear in 20 Dec 2005, vol. 635 issue), 9 pages and 5 figures
Plane 5D worlds and simple compactification
Creators: name: Solano, David
name: Alvarado, Rodrigo
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We obtain a new kind of exact solution to vaccum Einstein field equations that contain both Minkowsian world and a special 5D curved spacetime with particularly free structure. This special world is defined by an arbitrary function and a space of three parameters. We suggest that this solution could correct (in principle) certain aspects of the physics in flat spacetime.
description: 7 pages, 1 figure. 2nd version. Corrected some typos
Dual on-chip SQUID measurement protocol for flux detection in large magnetic fields
Creators: name: Cochran, Josiah
name: Franco-Rivera, Giovanni
name: Zhang, Denghui
name: Chen, Lei
name: Wang, Zhen
name: Chiorescu, Irinel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Sensitive magnetometers that can operate in high magnetic fields are essential for detecting magnetic resonance signals originating from small ensembles of quantum spins. Such devices have potential applications in quantum technologies, in particular quantum computing. We present a novel experimental setup implementing a differential flux measurement using two DC-SQUID magnetometers. The differential measurement allows for cancellation of background flux signals while enhancing sample signal. The developed protocol uses pulsed readout which minimizes on-chip heating since sub-Kelvin temperatures are needed to preserve quantum spin coherence. Results of a proof of concept experiment are shown as well.
description: 5 pages, 6 figures, 1 table
Di-hadron correlations at ISR and RHIC energies
Creators: name: Levai, P.
name: Fai, G.
name: Papp, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The structure of hadron-hadron correlations is investigated in proton-proton collisions.We focus on the transmission of the initial transverse momenta of partons (``intrinsic $k_T$'') to the hadron-hadron correlations. Values of the intrinsic transverse momentum obtained from experimental correlations are compared to the results of a model with partially randomized parton transverse momenta at ISR and RHIC energies. Procedures for extracting the correlations from data are discussed.
description: Modifications in the text and in the title. 12 pages, 4 figures
Onustus aquitanus Simone & Cunha 2012
Creators: name: Cavallari, Daniel C.
name: Dornellas, Ana Paula S.
name: Simone, Luiz Ricardo L.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Littorinimorpha
Xenophoridae
Onustus
Onustus aquitanus

description: aquitanus, Onustus Simone & Cunha, 2012
 Onustus aquitanus Simone & Cunha, 2012: 750–751 (fig. 2).
Gastropoda, Xenophoridae
 Paratype: MZSP 104032.
 Locality: Brazil, Espírito Santo, off Conceição da Barra, Abrolhos Slope, 18°59' S, 37°50' W, MD55 sta. DC 73, 637 m depth, 27 May 1987.
 Collectors: P. Bouchet, J.H. Leal and B. Métivier.
 Preservation: Dry.
 Remarks: Former MNHN, Paris.
description: Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on page 8, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/3840125
Influence of the projectile description on breakup calculations
Creators: name: Capel, P.
name: Nunes, F. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Calculations of the breakup of 8B and 11Be are performed with the aim of analyzing their sensitivity to the projectile description. Several potentials adjusted on the same experimental data are used for each projectile. The results vary significantly with the potential choice, and this sensitivity differs from one projectile to the other. In the 8B case, the breakup cross section is approximately scaled by the asymptotic normalization coefficient of the initial bound state (ANC). For $^{11}$Be, the overall normalization of the breakup cross section is no longer solely determined by the ANC. The partial waves describing the continuum are found to play a significant role in this variation, as the sensitivity of the phase shifts to the projectile description changes with the physical constraints imposed to the potential.
description: 13 pages, 6 figures. Accepted for publication in Phys. Rev. C
X-ray observations of RX J0822-4300 and Puppis-A
Creators: name: Hui, C. Y.
name: Becker, W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Based on observations with the X-ray observatories Chandra and XMM-Newton we present results from a detailed spectro-imaging and timing analysis of the central compact X-ray source RX J0822-4300 in the supernova remnant Puppis-A. The superior angular resolution of Chandra allows for the first time to pinpoint the point source nature of this object down to $0.59\pm0.01$ arcsec (FWHM) and to determine its position:{RA=$08^{\rm h}21^{\rm m}57.40^{\rm s}$, Dec=$-43^{\circ}00^{'}16.69^{''}$ (J2000)} with sub-arcsecond accuracy. Spectral fits based on Chandra and XMM-Newton data provide a tight constraint on the emission properties of RX J0822-4300. Most of its X-ray emission seems to be of thermal origin. A model spectrum consisting of two blackbody components with $T_{1}\simeq 2.6\times10^{6}$ K, $T_{2}\simeq 5.0\times10^{6}$ K and $R_{1}\simeq 3.3$ km, $R_2 \simeq 0.75$ km for the blackbody temperatures and the size of the projected emitting regions, respectively, provides the best model description of its spectrum. A search for X-ray pulsations from RX J0822-4300, revealed an interesting periodicity candidate which, if confirmed, does not support a scenario of steady spin-down.
description: Accepted by A&A, 20 pages, 10 figures, 3 tables
Genetic Variability at the ADP Ribose Binding Site of SARS-CoV-2 Macrodomain and Predicting Its Effects on ADP Ribose Binding
Creators: name: Yazdani, Setayesh
name: Nicola, De Maio
name: Schapira, Matthieu
Publisher: name: Zenodo
Year: 2020

description: In this report, I will explain how we identified the ADP ribose (ADPr) binding site of Mac1 and its druggability measure, and list the residues lining that site. Then I will present diversity dendrograms of UniProt entries of Alpha- and Betacoronavirus genera while focusing on Mac1 ADPr binding site. Following that, I will show the predicted effects on ADPr binding to Mac1 due to changes in Gibbs free energy of ligand binding as a result of the non-synonymous variants that Nicola De Maio, our collaborator from European Bioinformatics Institute, has identified at ADPr binding site.
Yoldiella arariboia Benaim & Absalao 2011
Creators: name: Cavallari, Daniel C.
name: Dornellas, Ana Paula S.
name: Simone, Luiz Ricardo L.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Bivalvia
Nuculanoida
Yoldiidae
Yoldiella
Yoldiella arariboia

description: arariboia, Yoldiella Benaim & Absalão, 2011
 Yoldiella arariboia Benaim & Absalão, 2011: 521–523 (fig. 6).
Bivalvia, Yoldiidae
 Paratypes (6 spc): MZSP 93358.
 Locality: Brazil, Rio de Janeiro, Campos Basin, sta. 84, 22º26'28" S, 39º58'53.3" W, 1050 m depth, 2003. Collector: R/V Astro Garoupa.
 Preservation: Dry.
description: Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on page 8, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/3840125
An FPGA-based Trigger System with Online Track Recognition in COMET Phase-I
Creators: name: Nakazawa, Yu
name: Fujii, Yuki
name: Ikeno, Masahiro
name: Kuno, Yoshitaka
name: Lee, MyeongJae
name: Mihara, Satoshi
name: Shoji, Masayoshi
name: Uchida, Tomohisa
name: Ueno, Kazuki
name: Yoshida, Hisataka
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: An FPGA-based online trigger system has been developed for the COMET Phase-I experiment. This experiment searches for muon-to-electron conversion, which has never been observed yet. A drift chamber and trigger counters detect a mono-energetic electron from the conversion process in a 1-T solenoidal magnetic field. A highly intense muon source is applied to reach unprecedented experimental sensitivity. It also generates undesirable background particles, and a trigger rate due to these particles is expected to be much higher than an acceptable trigger rate in the data acquisition system. By using hit information from the drift chamber too, the online trigger system efficiently suppresses a background trigger rate while keeping signal-event acceptance large. A characteristic of this system is the utilization of the machine learning technique in the form of look-up tables on hardware. An initial simulation study indicates that the signal-event acceptance of the online trigger is 96% while the background trigger rate is reduced from over $90\,\mathrm{kHz}$ to $13\,\mathrm{kHz}$. For this scenario, we have produced trigger-related electronics that construct a distributed trigger architecture. The total latency of the trigger system was estimated to be $3.2\,\mathrm{μs}$, and the first operation test was carried out by using a part of the drift-chamber readout region.
description: IEEE Real Time 2020 Conference, 7 pages
Rabies Pathogenicity
Creators: name: Shreyas Joshi and Kartik Adake
Publisher: name: Bio Vet Innovator Magazine
Year: 2024

description: Rabies is a zoonotic disease capable of affecting a plethora of mammalian hosts including humans. The most significant hosts are dogs which cause 90% of all human rabies cases, and haematophagous bats which serve as prime reservoirs of Lyssavirus spp.  Rabies may be manifested as the relatively uncommon paralytic rabies (20% of all cases) or the more well-known furious rabies (80% of all cases). Humans have known about furious rabies and recorded its occurrence since the very first evidence of written records.  ‘Rabies’ originates from the Latin ‘rabere’ meaning rage, and thus, the genus of rabiescausing viruses, Lyssavirus, is named after Lyssa, the Greek goddess of rage and fury.
The Role of Magnetic Fields on Astrophysical Jets
Creators: name: Pino, E. M. de Gouveia Dal
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Highly collimated supersonic jets and less collimated outflows are observed to emerge from a wide variety of astrophysical objects. They are seen in young stellar objects (YSOs), proto-planetary nebulae, compact objects (such as galactic black holes or microquasars, and X-ray binary stars), and in the nuclei of active galaxies (AGNs). Despite their different physical scales (in size, velocity, and amount of energy transported), they have strong morphological similarities. What is the universal mechanism that can explain their origin? In this lecture, I briefly review the role that magnetic fields seem to play on the formation, structure, and propagation of these jets.
description: 12 pages, pdf file; Invited Review presented at the conference "Magnetic Fields in the Universe: from Laboratory and Stars to the Primordial Structures", Angra dos Reis (Brazil), November 2004. To be published at AIP Conference Procs., eds. E.M. de Gouveia Dal Pino, G. Lugones, & A. Lazarian (Melville: AIP), in press
On the discrete Peyrard-Bishop model of DNA: stationary solutions and stability
Creators: name: Cuenda, Sara
name: Sanchez, Angel
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Quantitative Biology (q-bio.OT)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: As a first step in the search of an analytical study of mechanical denaturation of DNA in terms of the sequence, we study stable, stationary solutions in the discrete, finite and homogeneous Peyrard-Bishop DNA model. We find and classify all the stationary solutions of the model, as well as analytic approximations of them, both in the continuum and in the discrete limits. Our results explain the structure of the solutions reported by Theodorakopoulos {\em et al.} [Phys. Rev. Lett. {\bf 93}, 258101 (2004)] and provide a way to proceed to the analysis of the generalized version of the model incorporating the genetic information.
description: 15 pages, 12 figures
Noiseless attack and counterfactual security of quantum key distribution
Creators: name: Rao, Vinod N.
name: Srikanth, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Counterfactual quantum key distribution (QKD) enables two parties to share a secret key using an interaction-free measurement. Here, we point out that the efficiency of counterfactual QKD protocols can be enhanced by including non-counterfactual bits. This inclusion potentially gives rise to the possibility of noiseless attacks, in which Eve can gain knowledge of the key bits without introducing any errors in the quantum channel. We show how this problem can be resolved in a simple way that naturally leads to the idea of "counterfactual security", whereby the non-counterfactual key bits are indicated to be secure by counterfactual detections. This method of enhancing the key rate is shown to be applicable to various existing quantum counterfactual key distribution protocols, increasing their efficiency without weakening their security.
description: 6 pages, 1 figure, close to the published version
Kinematical and Dynamical Modeling of Elliptical Galaxies
Creators: name: Mamon, G. A.
name: Lokas, E.
name: Dekel, A.
name: Stoehr, F.
name: Cox, T. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Elements of kinematical and dynamical modeling of elliptical galaxies (Es) are presented. In projection, NFW models resemble Sersic models, but with a very narrow range of shapes (m=3+/-1). The total density profile of Es cannot be NFW-like because the predicted local M/L and aperture velocity dispersion within an effective radius (Re) are much lower than observed. Stars must then dominate Es out to a few Re. Fitting an NFW model to the total density profile of Sersic+NFW (stars+dark matter [DM]) Es results in very high concentration parameters, as found by X-ray observers. Kinematical modeling of Es assuming an isotropic NFW DM model underestimates M/L at the virial radius by a factor of 1.6 to 2.4, because dissipationless LCDM halos have slightly different density profiles and slightly radial velocity anisotropy. In N-body+gas simulations of Es as merger remnants of spirals embedded in DM halos, the slope of the DM density profile is steeper when the initial spiral galaxies are gas-rich. The Hansen & Moore (2006) relation between anisotropy and the slope of the density profile breaks down for gas and DM, but the stars follow an analogous relation with slightly less radial anisotropies for a given density slope. Using kurtosis (h_4) to infer anisotropy in Es is dangerous, as h_4 is also sensitive to small levels of rotation. The stationary Jeans equation provides accurate masses out to 8 Re. The discrepancy between the modeling of Romanowsky et al. (2003), indicating a dearth of DM in Es, and the simulations analyzed by Dekel et al. (2005), which match the spectroscopic observations of Es, is partly due to radial anisotropy and to observing oblate Es face-on. However, one of the 15 solutions to the orbit modeling of Romanowsky et al. is found to have an amount and concentration of DM consistent with LCDM predictions.
description: Invited talk, 21st IAP meeting, Mass Profiles and Shapes of Cosmological Structures, ed. G. A. Mamon, F. Combes, C. Deffayet & B. Fort (Paris: EDP). 10 pages, 7 figures (8 plots)
Effective Hamiltonian for fermions in an optical lattice across Feshbach resonance
Creators: name: Duan, L. -M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive the Hamiltonian for cold fermionic atoms in an optical lattice across a broad Feshbach resonance, taking into account of both multiband occupations and neighboring-site collisions. Under typical configurations, the resulting Hamiltonian can be dramatically simplified to an effective single-band model, which describes a new type of resonance between the local dressed molecules and the valence bond states of fermionic atoms at neighboring sites. On different sides of such a resonance, the effective Hamiltonian is reduced to either a t-J model for the fermionic atoms or an XXZ model for the dressed molecules. The parameters in these models are experimentally tunable in the full range, which allows for observation of various phase transitions.
description: 5 pages, 2 figures
On a computational approach for the approximate dynamics of averaged variables in nonlinear ODE systems: toward the derivation of constitutive laws of the rate type
Creators: name: Acharya, Amit
name: Sawant, Aarti
Publisher: name: arXiv
Year: 2005
Subjects: subject: Numerical Analysis (math.NA)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: A non-perturbative approach to the time-averaging of nonlinear, autonomous ODE systems is developed based on invariant manifold methodology. The method is implemented computationally and applied to model problems arising in the mechanics of solids.
description: 34 pages PDF
Conasprella arawak Petuch & Myers 2014
Creators: name: Cavallari, Daniel C.
name: Dornellas, Ana Paula S.
name: Simone, Luiz Ricardo L.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Neogastropoda
Conidae
Conasprella
Conasprella arawak

description: arawak, Jaspidiconus Petuch & Myers, 2014
 Jaspidiconus arawak Petuch & Myers, 2014a: 40–41 (fig. 2J–K).
Gastropoda, Conidae
 Holotype: MZSP 116149.
 Locality: Lesser Antilles Archipelago, Grenadines (Dependency of Grenada), Petit Martinique Island, 3 m depth.
 Preservation: Dry.
 Remarks: This species was recombined as Conasprella arawak by Puillandre et al. (2015).
description: Published as part of Cavallari, Daniel C., Dornellas, Ana Paula S. & Simone, Luiz Ricardo L., 2016, Second annotated list of type specimens of molluscs deposited in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-59 in European Journal of Taxonomy 213 on page 8, DOI: 10.5852/ejt.2016.213, http://zenodo.org/record/3840125
How Good is your Explanation? Algorithmic Stability Measures to Assess the Quality of Explanations for Deep Neural Networks
Creators: name: Fel, Thomas
name: Vigouroux, David
name: Cadène, Rémi
name: Serre, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: A plethora of methods have been proposed to explain how deep neural networks reach their decisions but comparatively, little effort has been made to ensure that the explanations produced by these methods are objectively relevant. While several desirable properties for trustworthy explanations have been formulated, objective measures have been harder to derive. Here, we propose two new measures to evaluate explanations borrowed from the field of algorithmic stability: mean generalizability MeGe and relative consistency ReCo. We conduct extensive experiments on different network architectures, common explainability methods, and several image datasets to demonstrate the benefits of the proposed measures.In comparison to ours, popular fidelity measures are not sufficient to guarantee trustworthy explanations.Finally, we found that 1-Lipschitz networks produce explanations with higher MeGe and ReCo than common neural networks while reaching similar accuracy. This suggests that 1-Lipschitz networks are a relevant direction towards predictors that are more explainable and trustworthy.
Cluster glass transition and relaxation in random spinel CoGa2O4
Creators: name: Naka, T.
name: Nakane, T.
name: Ishii, S.
name: Nakayama, M.
name: Ohmura, A.
name: Ishikawa, F.
name: de Visser, A.
name: Abe, H.
name: Uchikoshi, T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We report magnetic properties in the random spinel magnet CoGa2O4. Rietveld analysis of the x-ray diffraction profile for CoGa2O4 reveals that the Co and Ga ions are distributed randomly in the tetrahedral A-sites and octahedral B-sites in the cubic spinel structure. CoGa2O4 exhibits a spin-glass transition at TSG = 8.2 K that is confirmed by measurements of the dc- and ac-susceptibilities and thermoremanent magnetization (TRM) that develops below TSG. From the frequency dependence of the freezing temperature Tf for CoGa2O4, it is indicated that the relaxation time follows a Vogel-Fulcher law. Magnetic entropy is considerably reduced, probably because magnetic cluster formation developed even at T > TSG. The relaxation rate of TRM is considerably enhanced at TSG and decays rapidly above and below TSG. The time course of TRM is reproduced by non-exponential relaxation forms, such as a stretched exponential (Kohlrausch) as well as Ogielski and Weron relaxation forms. This behavior is displayed universally in glass systems, and the characteristic parameters associated with these functions were reasonable.
description: 34 pages, 14 figures, 3 table