cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
How do you define and measure research productivity?
Creators: name: Abramo, Giovanni
name: D'Angelo, Ciriaco Andrea
Publisher: name: arXiv
Year: 2018
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: Productivity is the quintessential indicator of efficiency in any production system. It seems it has become a norm in bibliometrics to define research productivity as the number of publications per researcher, distinguishing it from impact. In this work we operationalize the economic concept of productivity for the specific context of research activity and show the limits of the commonly accepted definition. We propose then a measurable form of research productivity through the indicator "Fractional Scientific Strength (FSS)", in keeping with the microeconomic theory of production. We present the methodology for measure of FSS at various levels of analysis: individual, field, discipline, department, institution, region and nation. Finally, we compare the ranking lists of Italian universities by the two definitions of research productivity.
Probing Hard Color-Singlet Exchange in ppbar Collisions at root-s=630 GeV and 1800 GeV
Creators: name: al, B. Abbott et
name: Collaboration, DZero
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present results on dijet production via hard color-singlet exchange in proton-antiproton collisions at root-s = 630 GeV and 1800 GeV using the DZero detector. The fraction of dijet events produced via color-singlet exchange is measured as a function of jet transverse energy, separation in pseudorapidity between the two highest transverse energy jets, and proton-antiproton center-of-mass energy. The results are consistent with a color-singlet fraction that increases with an increasing fraction of quark-initiated processes and inconsistent with two-gluon models for the hard color-singlet.
description: 16 pages, 6 figures
Low dimensional correlations under thermal fluctuations
Creators: name: Kestin, N.
name: Giamarchi, T.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the correlation functions of quantum spin $1/2$ ladders at finite temperature, under a magnetic field, in the gapless phase at various relevant temperatures $T\neq 0$, momentum $q$ and frequencies $ω$. We compute those quantities using the time dependent density matrix renormalization group (T-DMRG) in some optimal numerical scheme. We compare these correlations with the ones of dimerized quantum spin chains and simple spin chains, that we compute by a similar technique. We analyze the intermediate energy modes and show that the effect of temperature lead to the formation of an essentially dispersive mode corresponding to the propagation of a triplet mode in an incoherent background, with a dispersion quite different from the one occurring at very low temperatures. We compare the low energy part of the spectrum with the predictions of the Tomonaga-Luttinger liquid field theory at finite temperature. We shows that the field theory describes in a remarkably robust way the low energy correlations for frequencies or temperatures up to the natural cutoff (the effective dispersion) of the system. We discuss how our results could be tested in e.g. neutron scattering experiments.
description: 17 pages, 14 figures
Entropy Bound for the Classical Capacity of a Quantum Channel Assisted by Classical Feedback
Creators: name: Ding, Dawei
name: Quek, Yihui
name: Shor, Peter W.
name: Wilde, Mark M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We prove that the classical capacity of an arbitrary quantum channel assisted by a free classical feedback channel is bounded from above by the maximum average output entropy of the quantum channel. As a consequence of this bound, we conclude that a classical feedback channel does not improve the classical capacity of a quantum erasure channel, and by taking into account energy constraints, we conclude the same for a pure-loss bosonic channel. The method for establishing the aforementioned entropy bound involves identifying an information measure having two key properties: 1) it does not increase under a one-way local operations and classical communication channel from the receiver to the sender and 2) a quantum channel from sender to receiver cannot increase the information measure by more than the maximum output entropy of the channel. This information measure can be understood as the sum of two terms, with one corresponding to classical correlation and the other to entanglement.
description: v2: 6 pages, 1 figure, final version published in conference proceedings
Adding a Suite of Chemical Abundances to the MACER Code for the Evolution of Massive Elliptical Galaxies
Creators: name: Gan, Zhaoming
name: Choi, Ena
name: Ostriker, Jeremiah P.
name: Ciotti, Luca
name: Pellegrini, Silvia
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We add a suite of chemical abundances to the MACER (Massive AGN Controlled Ellipticals Resolved) 2D code, by solving 12 additional continuity equations for H, He, C, N, O, Ne, Mg, Si, S, Ca, Fe and Ni respectively with sources from AGB stars and supernovae of type Ia and II with metal yields based on standard stellar physics. New stars, formed in Toomre unstable circumnuclear disks (of a size $\lesssim150$ parsec), are assumed to have a top-heavy initial mass function with a power index of 1.65. The metal dilution effects due to cosmic accretion are also included. With the high resolution of few parsecs in central regions, resolved black hole accretion and AGN feedback, we can track the metal enrichment, transportation and dilution throughout the modeled massive elliptical galaxy of velocity dispersion $\sim280$ km/s. We retrieve the chemical composition of the BAL winds launched by the central AGN, synthesize the X-ray features of the hot ISM, and find that (1) the simulated metallicity in the BAL winds could be up to $\sim 8 Z_\odot$, while that of the hot ISM in the host galaxy is $\sim 2.3 Z_\odot$, matching well with SDSS observations of BLR gas; (2) the X-ray emitting hot gas is metal enriched with a typical value $\sim2.5 Z_\odot$; (3) the circumunuclear cold gas disk, where the metals are condensed, further enriched and recycled, plays a critical role in the metal enrichment; (4) the black hole accretion rate $\dot{M}_{\rm BH}$ linearly correlates with the star formation rate $\dot{M}_\star^+$ in the circumnuclear disk, i.e, $\dot{M}_\star^+ \sim 7.7 \dot{M}_{\rm BH}$, but lagged in time by roughly $10^6$ years.
description: 10 pages, 10 figures; accepted by ApJ
pi-N charge exchange and pi(+)-pi(0) scattering at low energies
Creators: name: Pocanic, D.
name: Frlez, E.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: pi-N and pi-pi interactions near threshold are uniquely sensitive to the chiral symmetry breaking part of the strong interaction. The pi-N sigma-term value with its implications for nucleon quark structure and the recent controversy concerning the size of the scalar quark condensate have renewed the experimental interest in these two fundamental systems. We report new differential cross sections for the reaction $pi^-p \to π^0n$ at 27.5 MeV pion incident kinetic energy, measured between $θ_{CM} = 0^\circ$ and $55^\circ$. Our results are in excellent agreement with the existing comprehensive pi-N phase shift analysis. We also report on a Chew-Low analysis of exclusive $π^+ p \to π^+π^0p$ data at 260 MeV pion incident energy.
description: Talk given by D. Pocanic at QULEN97, Osaka, 20-23 May 1997; 4 pages, 2 PostScript figures, writen in LaTeX 2e, uses packages "epsfig" and "espcrc1"
Decapoda Latreille 1802
Creators: name: Purushothaman, P.
name: Bharathi, S.
name: Damodhar, A. T.
name: Ajith Kumar, T. T.
name: Lal, K. K.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Decapoda

description: Order: Decapoda Latreille, 1802  Infraorder: Caridea Dana, 1852
description: Published as part of Purushothaman, P., Bharathi, S., Damodhar, A. T., Ajith Kumar, T. T. & Lal, K. K., 2023, Morphological and molecular approaches revealed a new species of snapping shrimp genus Alpheus Fabricius, 1798 (Decapoda: Caridea: Alpheidae) from Lakshadweep Islands, India, pp. 426-442 in Zootaxa 5227 (4) on page 428, DOI: 10.11646/zootaxa.5227.4.2, http://zenodo.org/record/7518860
Supplemental Materials - Canagliflozin and fracture risk in patients with type 2 diabetes: results from the CANVAS Program
Creators: name: Zien Zhou
name: Jardine, Meg
name: Perkovic, Vlado
name: Matthews, David
name: Mahaffey, Kenneth W
name: Zeeuw, Dick De
name: Fulcher, Greg
name: Mehul Desai
name: Oh, Richard J.
name: Simpson, Roger
name: Watts, Nelson B.
name: Neal, Bruce
Publisher: name: Figshare
Year: 2019
Subjects: subject: 110306 Endocrinology
subject: FOS: Clinical medicine

description: Supplemental materials for the Zhou et al article entitled, "Canagliflozin and fracture risk in patients with
type 2 diabetes: results from the CANVAS Program"
Error Propagation in the Hypercycle
Creators: name: Campos, P. R. A.
name: Fontanari, J. F.
name: Stadler, P. F.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Condensed Matter (cond-mat)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We study analytically the steady-state regime of a network of n error-prone self-replicating templates forming an asymmetric hypercycle and its error tail. We show that the existence of a master template with a higher non-catalyzed self-replicative productivity, a, than the error tail ensures the stability of chains in which m
General audio tagging with ensembling convolutional neural network and statistical features
Creators: name: Xu, Kele
name: Zhu, Boqing
name: Kong, Qiuqiang
name: Mi, Haibo
name: Ding, Bo
name: Wang, Dezhi
name: Wang, Huaimin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Audio tagging aims to infer descriptive labels from audio clips. Audio tagging is challenging due to the limited size of data and noisy labels. In this paper, we describe our solution for the DCASE 2018 Task 2 general audio tagging challenge. The contributions of our solution include: We investigated a variety of convolutional neural network architectures to solve the audio tagging task. Statistical features are applied to capture statistical patterns of audio features to improve the classification performance. Ensemble learning is applied to ensemble the outputs from the deep classifiers to utilize complementary information. a sample re-weight strategy is employed for ensemble training to address the noisy label problem. Our system achieves a mean average precision (mAP@3) of 0.958, outperforming the baseline system of 0.704. Our system ranked the 1st and 4th out of 558 submissions in the public and private leaderboard of DCASE 2018 Task 2 challenge. Our codes are available at https://github.com/Cocoxili/DCASE2018Task2/.
description: Submitted to ICASSP
Diaporama: Kearifan Lokal dalam Mantra Masyarakat Samin di Dusun Jepang Desa Margomulyo Kecamatan Margomulyo Kabupaten Bojonegoro
Creators: name: Prayoga, Elga Ahmad
name: Maulfi Syaiful Rizal
name: Budiana, Nia
Publisher: name: figshare
Year: 2019
Subjects: subject: 200202 Asian Cultural Studies
subject: FOS: Other humanities
subject: 200205 Culture, Gender, Sexuality
subject: 200204 Cultural Theory
subject: 200299 Cultural Studies not elsewhere classified
subject: 200516 Indonesian Literature
subject: FOS: Languages and literature
subject: 200209 Multicultural, Intercultural and Cross-cultural Studies

description: Mantra pada hakikatnya ialah sastra lisan. Adapun kami memulai peneilitan ini dengan berangkat pada landasan teori bahwa:- Rosidi (1995:125), “Bahasa yang paling tepat dapat mengekspresikan isi kebudayaan daerah adalah bahasa daerah yang bersangkutan”.
- “Sastra lisan pada umumnya tercipta sebagai tanggapan dan hasil pemikiran sistem kemasyarakatan, “Razali dan Jonson (2000:2).
Spatial separation of pyrrole and pyrrole-water clusters
Creators: name: Johny, Melby
name: Onvlee, Jolijn
name: Kierspel, Thomas
name: Bieker, Helen
name: Trippel, Sebastian
name: Küpper, Jochen
Publisher: name: arXiv
Year: 2019
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: We demonstrate the spatial separation of pyrrole and pyrrole(H$_2$O) clusters from the other atomic and molecular species in a supersonically-expanded beam of pyrrole and traces of water seeded in high-pressure helium gas. The experimental results are quantitatively supported by simulations. The obtained pyrrole(H$_2$O) cluster beam has a purity of ~100 %. The extracted rotational temperature of pyrrole and pyrrole(H$_2$O) from the original supersonic expansion is $T_\text{rot}=0.8\pm0.2$ K, whereas the temperature of the deflected, pure-pyrrole(H$_2$O) part of the molecular beam corresponds to $T_\text{rot}\approx0.4$ K.
Magic Numbers and Optical Absorption Spectrum in Vertically Coupled Quantum Dots in the Fractional Quantum Hall Regime
Creators: name: Imamura, Hiroshi
name: Makstym, Peter A.
name: Aoki, Hideo
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Exact diagonalization is used to study the quantum states of vertically coupled quantum dots in strong magnetic fields. We find a new sequence of angular momentum magic numbers which are a consequence of the electron correlation in the double dot. The new sequence occurs at low angular momenta and changes into the single dot sequence at a critical angular momentum determined by the strength of the inter-dot electron tunneling. We also propose that the magic numbers can be investigated experimentally in vertically coupled dots. Because of the generalized Kohn theorem, the far-infrared optical absorption spectrum of a single dot is unaffected by correlation but the theorem does not hold for two vertically coupled dots which have different confining potentials. We show that the absorption energy of the double dot should exhibit discontinuities at the magnetic fields where the total angular momentum changes from one magic number to another.
description: 4 pages, 3 Postscript figures, RevTeX. (to appear in Phys.Rev.B)
Secure Distributed Dynamic State Estimation in Wide-Area Smart Grids
Creators: name: Kurt, Mehmet Necip
name: Yilmaz, Yasin
name: Wang, Xiaodong
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cryptography and Security (cs.CR)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Smart grid is a large complex network with a myriad of vulnerabilities, usually operated in adversarial settings and regulated based on estimated system states. In this study, we propose a novel highly secure distributed dynamic state estimation mechanism for wide-area (multi-area) smart grids, composed of geographically separated subregions, each supervised by a local control center. We firstly propose a distributed state estimator assuming regular system operation, that achieves near-optimal performance based on the local Kalman filters and with the exchange of necessary information between local centers. To enhance the security, we further propose to (i) protect the network database and the network communication channels against attacks and data manipulations via a blockchain (BC)-based system design, where the BC operates on the peer-to-peer network of local centers, (ii) locally detect the measurement anomalies in real-time to eliminate their effects on the state estimation process, and (iii) detect misbehaving (hacked/faulty) local centers in real-time via a distributed trust management scheme over the network. We provide theoretical guarantees regarding the false alarm rates of the proposed detection schemes, where the false alarms can be easily controlled. Numerical studies illustrate that the proposed mechanism offers reliable state estimation under regular system operation, timely and accurate detection of anomalies, and good state recovery performance in case of anomalies.
Simple Gauge-mediated Models with Local Minima
Creators: name: Luty, Markus A.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We describe a simple class of supersymmetric gauge theories that can act as supersymmetry-breaking sectors for gauge-mediated supersymmetry breaking. The models have a local supersymmetry-breaking minimum along a direction in field space where a singlet gets a large expectation value. The potential along this direction has a runaway behavior stabilized by supersymmetry breaking in the effective low-energy theory. The supersymmetric vacua are at infinite field values, and cosmological bounds on false vacuum decay are easily satisfied. The models have no dimensionful parameters, and all mass scales arise through strong coupling dynamics. Simple variants of the model are compatible with perturbative unification, can naturally have dynamical supersymmetry breaking at a scale as low as 10 TeV, and can solve the R axion problem without appealing to Planck-scale effects.
description: 8 pages, LaTeX2e, no figures. Clarifications and references added; results unaffected
Resilience of the Internet to random breakdowns
Creators: name: Cohen, Reuven
name: Erez, Keren
name: ben-Avraham, Daniel
name: Havlin, Shlomo
Publisher: name: arXiv
Year: 2000
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: A common property of many large networks, including the Internet, is that the connectivity of the various nodes follows a scale-free power-law distribution, P(k)=ck^-a. We study the stability of such networks with respect to crashes, such as random removal of sites. Our approach, based on percolation theory, leads to a general condition for the critical fraction of nodes, p_c, that need to be removed before the network disintegrates. We show that for a<=3 the transition never takes place, unless the network is finite. In the special case of the Internet (a=2.5), we find that it is impressively robust, where p_c is approximately 0.99.
description: latex, 3 pages, 1 figure (eps), explanations added, Phys. Rev. Lett., in press
Quantum chemistry with Coulomb Sturmians: Construction and convergence of Coulomb Sturmian basis sets at Hartree-Fock level
Creators: name: Herbst, Michael F.
name: Avery, James Emil
name: Dreuw, Andreas
Publisher: name: arXiv
Year: 2018
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The first discussion of basis sets consisting of exponentially decaying Coulomb Sturmian functions for modelling electronic structures is presented. The proposed basis set construction selects Coulomb Sturmian functions using separate upper limits to their principle, angular momentum and magnetic quantum numbers. Their common Coulomb Sturmian exponent is taken as a fourth parameter. The convergence properties of such basis sets are investigated for second and third row atoms at the Hartree-Fock level. Thereby important relations between the values of the basis set parameters and the physical properties of the electronic structure are recognised. For example, an unusually large limit for the angular momentum quantum number in unrestricted Hartree-Fock calculations can be linked to the breaking of spherical symmetry in such cases. Furthermore, a connection between the optimal, i.e. minimum-energy, Coulomb Sturmian exponent and the average Slater exponents values obtained by Clementi and Raimondi (E. Clementi and D. L. Raimondi, J. Chem. Phys. 38, 2686 (1963)) is made. These features of Coulomb Sturmian basis sets emphasise their ability to correctly reproduce the physical features of Hartree-Fock wave functions.
description: 16 pages, 14 figures, supporting info
The Three-Magnon Contribution to the Spin Correlation Function in Integer-Spin Antiferromagnetic Chains
Creators: name: Horton, Matthew
name: Affleck, Ian
Publisher: name: arXiv
Year: 1999
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: The exact form factor for the O(3) non-linear sigma model is used to predict the three-magnon contribution to the spin correlation function, S(q,w), near wavevector q=pi in an integer spin, one-dimensional antiferromagnet. The three-magnon contribution is extrememly broad and extremely weak; the integrated intensity is <2% of the single-magnon contribution.
description: 4 pages, 1 figure
Prenatal cortisol modifies the association between maternal trauma history and child cognitive development in a sex-specific manner in an urban pregnancy cohort
Creators: name: Campbell, Rebecca K.
name: Devick, Katrina L.
name: Coull, Brent A.
name: Cowell, Whitney
name: Askowitz, Talia
name: Goldson, Brandon
name: Wright, Robert O.
name: Wright, Rosalind J.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Women’s experience of trauma may cause lifelong alterations in physiological stress regulation, which can be transmitted to offspring in utero. We investigated, in a prospective pregnancy cohort, associations among maternal lifetime interpersonal trauma (IPT) history, prenatal cortisol dysregulation, and children’s memory domains. Sex-specific effects were also explored. Pregnant women were enrolled from Brigham & Women’s Hospital and affiliated clinics near Boston, MA, in 2002–2007. IPT was assessed with the Revised Conflict Tactics Scale, short form. Salivary cortisol was measured at five time points on each of three days in one week at 29.0 ± 5.1 weeks gestation, and morning rise and diurnal slope were calculated. The Wide Range Assessment of Memory & Learning, 2nd Edition was administered at 6.5 ± 1.0 years and scores were generated for general memory and three sub-domains: verbal, visual, and attention/concentration. In total, 258 maternal-child dyads provided memory and IPT and/or cortisol data. IPT was positively associated with verbal memory in boys (β ± SE: 4.6 ± 2.6) and inversely associated with visual memory score in girls (−6.5 ± 3.2). IPT did not predict prenatal cortisol, but prenatal cortisol modified the association between IPT history and child memory in varying coefficient models allowing for non-linear effect modification. The strongest evidence of interaction was for visual memory in boys: IPT history was associated with poorer visual memory only in those with flatter prenatal diurnal slope (interaction p = .005). Maternal lifetime IPT that leads to prenatal HPA dysregulation may have consequences for child memory, more so than either trauma or elevated cortisol alone. Boys may be more vulnerable to effects. Sex- and timing-specific effects require further investigation.
Determining the mechanisms through which recent life stress predicts working memory impairments: precision or capacity?
Creators: name: Shields, Grant S.
name: Ramey, Michelle M.
name: Slavich, George M.
name: Yonelinas, Andrew P.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Prior research has found that recent life stress exposure is related to poorer working memory performance, but it remains unclear which aspects of working memory are related to stress. To address this important issue, we examined the extent to which recent life stress exposure was associated with working memory capacity (i.e., the number of items that can be held in working memory) and working memory precision (i.e., the quality of representations of items held within working memory) in a sample of 260 healthy young adults (Mage = 19.95 years old; range = 18–33). Recent life stress exposure and working memory were assessed with the Stress and Adversity Inventory for Daily Stress (Daily STRAIN) and color wheel task, respectively. We found that recent life stress was selectively associated with lower working memory capacity; moreover, the association of recent life stress with capacity was significantly stronger in magnitude than the non-significant association of recent life stress with precision. These associations were robust while controlling for potential confounds, including demographic factors, negative affect, and cumulative lifetime stress exposure. These results thus suggest that stress-related degradations in working memory capacity may help explain how recent life stress exposure affects working memory performance.
EOSC-hub D5.3 First report on maintenance and integration of federation and collaboration services
Creators: name: Liampotis, Nicolas
name: Koumantaros, Kostas
name: Zamani, Themis
name: Rozanska, Roksana
name: L'orphelin, Cyril
name: Weber, Pavel
name: Hardt, Marcus
name: Yuan, Jie
name: Vincente, David
name: Marious Chatziangelou
name: Nakos, Alexandros
name: Alvarez, Ivan Diaz
name: Jensen, Jens
name: Corbett, Greg
name: Ritz, Raphael
name: Kouril, Daniel
name: Kanellopoulos, Christos
name: Apweiler, Sander
name: Salle, Mischa
name: Licehammer, Slavik
name: Vianello, Enrico
Publisher: name: Zenodo
Year: 2020
Subjects: federation services
collaboration services

description: The document outlines the first report on maintenance and integration of federation, access enabling and collaboration services, one of the key components of the EOSC Federating Core, a fundamental asset that EOSC-hub provides to EOSC. It provides a technical description of enhancements for the EOSC-Hub services in Work Package 5 (WP5), results of integration activities and collaboration work with other initiatives made during the first year of the project. The report identifies the integration gaps and elaborates the plans for WP5 services.
Exact Solution of an Irreversible One-Dimensional Model with Fully Biased Spin Exchanges
Creators: name: Cadilhe, Antonio M. R.
name: Privman, Vladimir
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We introduce a model with conserved dynamics, where nearest neighbor pairs of spins $\uparrow \downarrow (\downarrow \uparrow)$ can exchange to assume the configuration $\downarrow \uparrow (\uparrow \downarrow)$, with rate $β(α)$, through energy decreasing moves only. We report exact solution for the case when one of the rates, $α$ or $β$, is zero. The irreversibility of such dynamics results in strong dependence on the initial conditions. Domain wall arguments suggest that for more general models with steady states the dynamical critical exponent for the anisotropic spin exchange is different from the isotropic value.
description: 16 pages, plain TeX file
Towards a Transportable Aluminium Ion Quantum Logic Optical Clock
Creators: name: Hannig, S.
name: Pelzer, L.
name: Scharnhorst, N.
name: Kramer, J.
name: Stepanova, M.
name: Xu, Z. T.
name: Spethmann, N.
name: Leroux, I. D.
name: Mehlstäubler, T. E.
name: Schmidt, P. O.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: With the advent of optical clocks featuring fractional frequency uncertainties on the order of $10^{-17}$ and below, new applications such as chronometric levelling with few-cm height resolution emerge. We are developing a transportable optical clock based on a single trapped aluminium ion, which is interrogated via quantum logic spectroscopy. We employ singly-charged calcium as the logic ion for sympathetic cooling, state preparation and readout. Here we present a simple and compact physics and laser package for manipulation of $^{40}\mathrm{Ca}^+$. Important features are a segmented multi-layer trap with separate loading and probing zones, a compact titanium vacuum chamber, a near-diffraction-limited imaging system with high numerical aperture based on a single biaspheric lens, and an all-in-fiber $^{40}\mathrm{Ca}^+$ repump laser system. We present preliminary estimates of the trap-induced frequency shifts on $^{27}\mathrm{Al}^+$, derived from measurements with a single calcium ion. The micromotion-induced second-order Doppler shift for $^{27}\mathrm{Al}^+$ has been determined to be \sods and the black-body radiation shift is $δν_\mathrm{BBR}/ν=(-4.0\pm0.4)\times10^{-18}$. Moreover, heating rates of 30 (7) quanta per second at trap frequencies of $ω_\mathrm{rad,Ca+} \approx2π\times2.5\,\mathrm{MHz}$ ($ω_\mathrm{ax,Ca+} \approx2π\times1.5\,\mathrm{MHz}$) in radial (axial) direction have been measured, enabling interrogation times of a few hundreds of milliseconds.
description: 14 pages, 17 figures
Guía para el Registro Internacional de Dibujos y Modelos Industriales Según el Arreglo de la Haya
Creators: name: Organización Mundial De La Propiedad Intelectual
name: Weltorganisation Für Geistiges Eigentum.
name: Organisation Mondiale De La Propriété Intellectuelle.
Publisher: name: Unknown
Year: 0

description: La Guía está destinada principalmente a los solicitantes y titulares de registros internacionales de marcas, así como a los funcionarios de las administraciones competentes de los Estados miembros de la Unión de La Haya. En ella se describen las distintas etapas del procedimiento de registro internacional y se explican las disposiciones esenciales del Arreglo de La Haya.
title: Billet du maquisard du Vercors Michel Pérotin (maquisard Fressinat) daté du 24 mars 1944, reçu par sa mère à Bordeaux
Creators: name: Michel Pérotin (Fressinat)
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2019
Subjects: subject: Maquis alpins, Deuxième guerre mondiale, correspondance des maquisards avec leurs familles

description: Billet du maquisard du Vercors Michel Pérotin (Fressinat), daté du 24 mars 1944, écrit au crayon en langage convenu et signé Michel, reçu par sa mère à Bordeaux
description: Source: GED Campus Condorcet Fonds Yves Pérotin CNRS-IHTP ARC 143 ; 2MAQ_39
title: Adsorbate Formation/Removal and Plasma‐Induced Evolution of Defects in Graphitic Materials
Creators: name: Eichhorn, Anna L.
name: Hoffer, Marvin
name: Bitsch, Katharina
name: Dietz, Christian
Publisher: name: Wiley-VCH
Year: 2024

description: The preparation of adsorbate‐free graphene with well‐defined layer numbers is a current challenge in materials and surface science and required to fabricate graphene‐based nanodevices, such as used in nanoelectromechanical systems. One strategy to tailor the layer number is oxygen‐plasma treatment of few‐layer graphene/graphite flakes. However, when graphitic materials are stored in air under ambient conditions, it is almost inevitable that adsorbates deposit on their surfaces. When precisely removing individual graphene layers from graphitic flakes by oxygen‐plasma treatment, the amount and type of adsorbates strongly affect the required plasma‐treatment process and duration. To examine the removal/etching mechanism involved in removing such layers, few‐layer graphene/graphite flakes, with areas of different layer numbers, are stored in ambient air and stepwise exposed to oxygen plasma in a shielded configuration. The flakes are then successively analyzed by multifrequency atomic force microscopy together with Raman spectroscopy, focusing on etching rate, and adsorbate and defect evolution. Combined in‐plane and out‐of‐plane tip–adsorbate–substrate interaction analysis facilitates discrimination of different types of adsorbates (water, polycyclic aromatic hydrocarbons, and linear alkanes) and their formation with time. The results demonstrate the potential regarding the development of an efficient method for cleaning of graphitic surfaces and ablation of individual graphene layers.
Collective excitations of degenerate Fermi gases in anisotropic parabolic traps
Creators: name: Csordás, András
name: Graham, Robert
Publisher: name: arXiv
Year: 2000
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The hydrodynamic low-frequency oscillations of highly degenerate Fermi gases trapped in anisotropic harmonic potentials are investigated. Despite the lack of an obvious spatial symmetry the wave-equation turns out to be separable in elliptical coordinates, similar to a corresponding result established earlier for Bose-condensates. This result is used to give the analytical solution of the anisotropic wave equation for the hydrodynamic modes.
description: 11 pages, Revtex
Theory of spin magnetic quadrupole moment and temperature-gradient-induced magnetization
Creators: name: Shitade, Atsuo
name: Daido, Akito
name: Yanase, Youichi
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We revisit a quantum-mechanical formula of the spin magnetic quadrupole moment (MQM) in periodic crystals. Two previous attempts were inconsistent with each other; one is gauge dependent, and the other is gauge invariant. Here we define the spin MQM by calculating the spin density in a nonuniform system. Our definition is analogous to that of the charge polarization, but the result is gauge invariant and coincides with the latter previous one. We also formulate what we call gravitomagnetoelectric (gravito-ME) effect, in which the magnetization is induced by a temperature gradient. Although the Kubo formula for the gravito-ME effect provides an unphysical divergence at zero temperature, we prove that the correct susceptibility is obtained by subtracting the spin MQM from the Kubo formula. It vanishes at zero temperature and is related to the ME susceptibility by the Mott relation. We explicitly calculate the gravito-ME susceptibility in a Rashba ferromagnet and show its experimental feasibility.
description: 14 pages, 2 figures
Origin of Native Driving Force in Protein Folding
Creators: name: Wang, Z. H.
name: Lee, H. C.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Condensed Matter (cond-mat)
subject: Quantitative Biology (q-bio)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We derive an expression with four adjustable parameters that reproduces well the 20x20 Miyazawa-Jernigan potential matrix extracted from known protein structures. The numerical values of the parameters can be approximately computed from the surface tension of water, water-screened dipole interactions between residues and water and among residues, and average exposures of residues in folded proteins.
description: LaTeX file, Postscript file; 4 pages, 1 figure (mij.eps), 2 tables
Quality of life and cost of strategies of two chemotherapy lines in metastatic colorectal cancer: results of the FFCD 2000-05 trial
Creators: name: Lacas, Benjamin
name: Bouché, Olivier
name: Pierre-Luc Etienne
name: Gasmi, Mohamed
name: Texereau, Patrick
name: Gargot, Dany
name: Lombard-Bohas, Catherine
name: Azzedine, Ahmed
name: Denis, Bernard
name: Geoffroy, Patrick
name: Auby, Dominique
name: Michel, Pierre
name: Pignon, Jean-Pierre
name: Lepage, Côme
name: Ducreux, Michel
name: Borget, Isabelle
Publisher: name: Taylor & Francis
Year: 2019
Subjects: Medicine
Biotechnology
Cancer
Science Policy

description: Objectives: This study compared the cost and quality of life (QoL) of 407 advanced colorectal cancer patients, randomly assigned to receive LV5FU2 followed by FOLFOX6 (sequential strategy) or FOLFOX6 followed by FOLFIRI (combination strategy). Methods: Costs were compared from the French health insurance perspective, until the end of the second line of treatment. Consumed resources, collected during the trial, included medicines, hospitalizations, examinations, and transportation. Valuations were made using 2009 and 2016 tariffs. QoL was assessed using the QLQ-C30 questionnaire and clinically significant variations were searched. Results: In 2009, the mean cost per patient was significantly lower for the sequential strategy compared to the combination strategy (18,061€ and 23,119€, p = 0.001). In 2016, the difference was no longer significant (16,876€ and 18,090€, p = 0.41) because oxaliplatin and irinotecan became generics. The QoL analysis (292 patients) showed that there was significantly less improvement of global health status in the sequential strategy than in the combination strategy (29% and 42%; p = 0.02) during first-line therapy. No significant differences were observed for emotional functioning (p = 0.45) and physical functioning (p = 0.07) or during second-line therapy. Conclusion: The choice to treat patients with advanced colorectal cancer using one or the other strategy cannot be based on costs or QoL.
Generalization of the Berezinskii-Kosterlitz-Thouless theory to higher vortex densities
Creators: name: Timm, Carsten
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: The Berezinskii-Kosterlitz-Thouless theory for superfluid films is generalized in a straightforward way that (a) corrects for overlapping vortex-antivortex pairs at high pair density and (b) utilizes a dielectric approximation for the polarization of the vortex system and a local field correction. Generalized Kosterlitz equations are derived, containing higher order terms, which are compared with earlier predictions. These terms cause the total pair density to remain finite for temperatures above the transition so that it is not necessary to introduce an ad hoc cut-off, as opposed to the original Berezinskii-Kosterlitz-Thouless theory. The low-temperature bound pair phase is destabilized for small vortex core energy. The behaviour of the stiffness constant and of the correlation length close to the transition is not affected by the higher order terms. A first-order transition as suggested by other authors is not found for any values of the parameters. The pair density is calculated for temperatures below and above the transition. Possible experiments and the applicability of the extended approach are discussed. The approach is found to be applicable even in a significant temperature range above the transition.
description: 14 pages, LaTeX, 3 Postscript figures (to appear in Physica C)
O uso de um código comum de cores em mapas militares pelos impérios coloniais francês, português e espanhol (sécxs. XVII-XVIII) e a perda de informações: consequências da degradação documental
Creators: name: Oliveira, Juliana Buse De
name: Melo, Maria João
name: Casanova, Maria Da Conceição Lopes
Publisher: name: figshare
Year: 2019
Subjects: subject: 90901 Cartography
subject: FOS: Environmental engineering
subject: 210202 Heritage and Cultural Conservation
subject: FOS: Media and communications
subject: Library and Information Studies

description: Paper presented at the VI Luso-Brazilian Simposium on Historical Cartography (Braga, Portugal, November 4-7, 2015).

In: Fernandes, Mário Gonçalves (Org.). Atas do VI Simpósio Luso-Brasileiro de Cartografia Histórica. Porto (Portugal): Faculdade de Letras da Universidade do Porto, 2016, p. 27-37. ISBN: 978-989-8648-56-3. URL: .

Authors:Juliana Buse de Oliveira
https://orcid.org/0000-0002-4561-0481
Maria João Melo
https://orcid.org/0000-0001-7393-6801
Maria da Conceição Lopes Casanovahttps://orcid.org/0000-0001-9889-381X
Assessing national strengths and weaknesses in research fields
Creators: name: Abramo, Giovanni
name: D'Angelo, Ciriaco Andrea
Publisher: name: arXiv
Year: 2018
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: National policies aimed at fostering the effectiveness of scientific systems should be based on reliable strategic analysis identifying strengths and weaknesses at field level. Approaches and indicators thus far proposed in the literature have not been completely satisfactory, since they fail to distinguish the effect of the size of production factors from that of their quality, particularly the quality of labor. The current work proposes an innovative "input-oriented" approach, which permits: i) estimation of national research performance in a field and comparison to that of other nations, independent of the size of their respective research staffs; and, for fields of comparable intensity of publication, ii) identification of the strong and weak research fields within a national research system on the basis of international comparison. In reference to the second objective, the proposed approach is applied to the Italian case, through the analysis of the 2006-2010 scientific production of the Italian academic system, in the 200 research fields where bibliometric analysis is meaningful.
First-order scaling near a second-order phase transition: Tricritical polymer collapse
Creators: name: Owczarek, A. L.
name: Prellberg, T.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The coil-globule transition of an isolated polymer has been well established to be a second-order phase transition described by a standard tricritical O(0) field theory. We provide compelling evidence from Monte Carlo simulations in four dimensions, where mean-field theory should apply, that the approach to this (tri)critical point is dominated by the build-up of first-order-like singularities masking the second-order nature of the coil-globule transition: the distribution of the internal energy having two clear peaks that become more distinct and sharp as the tricritical point is approached. However, the distance between the peaks slowly decays to zero. The evidence shows that the position of this (pseudo) first-order transition is shifted by an amount from the tricritical point that is asymptotically much larger than the width of the transition region. We suggest an explanation for the apparently contradictory scaling predictions in the literature.
description: 4 pages, 2 figures included in text
title: "Die Mitternacht zog näher schon. Man trinkt noch Hofbräu in Babylon … und später wird man in selbiger Nacht von seinem Knecht ins Bett gebracht!" – some insights into the guest book of the German excavations in Babylon
Creators: name: Neumann, Georg
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2024
Subjects: subject: 956 Middle East (Near East)

description: Studies on the reception of Antiquity are booming, and the volume is a further reflection of this process. It brings together thirteen articles with a focus on the late 19th century and the first half of the 20th. During the 19th century, the (re)discovery through archaeology of Assyrian sites such as Nineveh triggered enormous interest among Europeans, who had previously known of these cities only through Biblical texts. The new findings challenged previous discourses about the region that were circulating in Europe at that time. However, the ancient materials were not received directly through primary sources; rather, their reception might be expanded or modified depending on the current prevailing discourse. This means that a subject can be (re)modified almost arbitrarily and interpreted for a variety of contexts. The question of interest for those working in reception studies, therefore, is not to assess whether the past is represented "correctly" (a normative approach), but rather to understand the situation in which it is received and ultimately instrumentalised (a constructivist approach). For this reason, the focus of several chapters is placed on the discursive interplay between the (re)discovery itself and its processing in politics, architecture, and art. Moreover, even though the archaeological excavations and the shaping of Assyriology as a new academic discipline were clearly a catalyst for this reception, one also has to pay attention to other chronologies that have so far been considered more peripheral. Therefore, the volume also includes studies dealing with sources from the 17th century onwards. – Among others the contributions study "The Ancient Near East in German textbooks around 1900" (B. Onken), "Reconstruction drawings of Ancient Near Eastern architecture as inspiration for building in the 1920ies in Germany" (B. Pedde), "The German novelist Karl May as a multiplier of knowledge about the Ancient Near East" (F. Pedde), "Fashion and the Ancient Orient" (F. Pinnock) and "Arnaldo Momigliano and his picture of the Orient" (A. Marcone), to list just a few.
If there is an exactly lambda-free abelian group then there is an exactly lambda-separable one
Creators: name: Shelah, Saharon
Publisher: name: arXiv
Year: 1995
Subjects: subject: Logic (math.LO)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: We give a solution stated in the title to problem 3 of part 1 of the problems listed in the book of Eklof and Mekler [EM],(p.453). There, in pp. 241-242, this is discussed and proved in some cases. The existence of strongly lambda-free ones was proved earlier by the criteria in [Sh:161] in [MkSh:251]. We can apply a similar proof to a large class of other varieties in particular to the variety of (non-commutative) groups.
Efficient Dense Frontier Detection for 2D Graph SLAM Based on Occupancy Grid Submaps
Creators: name: Oršulić, Juraj
name: Miklić, Damjan
name: Kovačić, Zdenko
Publisher: name: arXiv
Year: 2019
Subjects: subject: Robotics (cs.RO)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In autonomous robot exploration, the frontier is the border in the world map between the explored space and unexplored space. The frontier plays an important role when deciding where in the environment the robots should go explore next. We examine a modular control system pipeline for autonomous exploration where a 2D graph SLAM algorithm based on occupancy grid submaps performs map building and localization. We provide an overview of the state of the art in frontier detection and the relevant SLAM concepts and propose a specialized frontier detection method which is efficiently constrained to active submaps, yet robust to SLAM loop closures.
Optical phonons in a quarter-filled 1D Hubbard model
Creators: name: Maurel, Philippe
name: Lepetit, Marie-Bernadette
Publisher: name: arXiv
Year: 2000
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The influence of dispersion-less quantum optical phonons on the phase diagram of a quarter-filled Hubbard chain is studied using the Density-matrix renormalization group technique. The ground state phase diagram is obtained for frequencies corresponding to the intra-molecular vibrations in organic conductors. For high vibrational modes the system is only slightly affected by the electron-phonons coupling. It remains in a Lüttinger liquid phase as long as the electronic repulsion is larger than the polaronic binding energy. For low vibrational modes the phase diagram is very rich. A noticeable point is the existence of a $4k_F$ CDW phase for small values of the correlation strength. For realistic values of the electron repulsion and of the electron-phonons coupling constant a large phonons-mediated reduction of the Lüttinger liquid parameter $K_ρ$ was found compared to the pure electronic model.
description: 14 pages, 9 figures