cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Reaction Losses of Charged Particles in CsI(Tl) crystals
Creators: name: Sweany, S.
name: Lynch, W. G.
name: Brown, K.
name: Anthony, A.
name: Chajecki, Z.
name: Dell'Aquila, D.
name: Morfouace, P.
name: Teh, F. C. E.
name: Tsang, C. Y.
name: Tsang, M. B.
name: Wang, R. S.
name: Zhu, K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: To efficiently detect energetic light charged particles, it is common to use arrays of energy-loss telescopes involving two or more layers of detection media. As the energy of the particles increases, thicker layers are usually needed. However, carrying out measurements with thick-telescopes may require corrections for the losses due to nuclear reactions induced by the incident particles on nuclei within the detector and for the scattering of incident particles out of the detector, without depositing their full energy in the active material. In this paper, we develop a method for measuring such corrections and determine the reaction and out-scattering losses for data measured with the silicon-CsI(Tl) telescopes of the newly developed HiRA10 array. The extracted efficiencies are in good agreement with model predictions using the GEANT4 reaction loss algorithm for Z=1 and Z=2 isotopes. After correcting for the HiRA10 geometry, a general function that describes the efficiencies from the reaction loss in CsI(Tl) crystals as a function of range is obtained.
description: 9 pages, 9 figures
Can Quantum Gravitational Effects Influence the Entire History of the Universe?
Creators: name: Barboza, Edésio M.
name: Lemos, Nivaldo A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work, a flat Friedmann-Robertson-Walker (FRW) universe with dust and a cosmological constant is quantized. By means of a canonical transformation, the classical Hamiltonian is reduced to that of either a harmonic oscillator or anti-oscillator, depending on whether $Λ<0$ or $Λ>0$, respectively. In this way exact solutions to the Wheeler-DeWitt equation can easily be obtained. It turns out that a positive cosmological constant alone may account for an early inflationary regime and a later accelerated expansion phase, with a period of decelerated expansion in between. This suggests that quantum gravitational effects can influence most of the history or even the entire history of the Universe.
description: To appear in the Physical Review D
Dadagulella meredithae Rowson & Tattersfield 2013, comb. nov.
Creators: name: Rowson, Ben
name: Tattersfield, Peter
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Stylommatophora
Streptaxidae
Dadagulella
Dadagulella meredithae

description: Dadagulella meredithae (van Bruggen, 2000) comb. nov.
Figs 37, 84; Table 1
Gulella meredithae van Bruggen, 2000: 226-232, figs 1-7.
“…an as yet unidentified species from Malawi ” – van Bruggen & Meredith 1984: 165.
Gulella meredithae – Rowson & Lange 2007: 31.
Type material examined
MALAWI: holotype RMNH.59399: 1 ad., Nyika National Park (approx. 10.6°S, 33.8°E), Rumphi District, Juniper Forest, approx. 2100 m alt., leg. H.M. Meredith, 16 Sep. 1983.
Other material examined
None.
Description
SHELL (Fig. 37). Small (2.30 - 3.10 mm high x 1.40 - 1.60 mm wide), of 5.5 - “<6” whorls. Ovate-acuminate, although spire (spire angle 58 - 77°) less acuminate than in other Dadagulella gen. nov species. Apex rounded (in holotype) to weakly pointed. Embryonic whorls smoothly granulate. Later whorls with very fine, very numerous ribs (about 27 per mm on penultimate whorl). Sutures of intermediate depth. Umbilicus closed or nearly so. Peristome incomplete parietally. Outer palatal surface of aperture with a depression corresponding to the palatal tooth. Dentition 3-fold to 4-fold, consisting of at least: one lamella-like parietal tooth; one slab-like palatal tooth, not forming a parieto-palatal sinus; and a mammillate columellar baffle. Additional teeth limited to a shallow, weak columellar swelling. Juvenile shells with 2-fold to 3-fold dentition: one parietal tooth; one columellar tooth; and usually one basal tooth (termed labral by van Bruggen 2000). Van Bruggen (2000) showed that earlier sets of dentition are visible through the shells of some transparent juveniles, even in the preceding whorls, suggesting slow or no resorbtion. Anatomy unknown.
Range and habitat
Montane forest (above 1500 m to around 2450 m) in northern and central Malawi, and adjacent part of Zambia (Chowo Forest). Van Bruggen (2000) suspected it to range into parts of Tanzania adjoining northern Malawi.
Remarks
This species is distinctive in its small size, very fine, numerous ribs, and dentition. It differs from D. radius comb. nov. s.l. and D. browni comb. nov. s.l. in the lack of a basal tooth or denticle. The apex is rounded in the holotype but more conical in paratypes figured by van Bruggen (2000).
description: Published as part of Rowson, Ben & Tattersfield, Peter, 2013, Revision of Dadagulella gen. nov., the " Gulella radius group " (Gastropoda: Streptaxidae) of the eastern Afrotropics, including six new species and three new subspecies, pp. 1-46 in European Journal of Taxonomy 37 (37) on pages 26-27, DOI: 10.5852/ejt.2013.37, http://zenodo.org/record/3806770
Multiwavelength Gamma-Ray Bursts Observations with ECLAIRs
Creators: name: Gotz, Diego
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: ECLAIRs is the next space borne instrument that will be fully dedicated to multi-wavelength studies of Gamma-Ray Bursts (GRBs). It consists of a coded mask telescope with a wide (~2 sr) field of view, made of 6400 CdTe pixels (~1000 cm^2), which will work in the 4-300 keV energy band. It is expected to localise ~80 GRBs/yr, thanks to the on-board real time event processing. The GRBs (and other transients) coordinates will be distributed within a few seconds from the onset of the burst with a typical uncertainty of ~5-10 arcmin. The detection system will also include a soft X-ray camera (1-10 keV) allowing to study in detail the prompt soft X-ray emission and to reduce the error box for about half of the GRBs seen by ECLAIRs to ~30 arcsec. ECLAIRs is expected to be flown in late 2011 and to be the only instrument capable of providing GRB triggers with sufficient localisation accuracy for GRB follow-up observations with the powerful ground based spectroscopic telescopes available by then. We will present the current status of the ECLAIRs project and its possible developments.
description: 6 pages, 1 figure, proceedings of the Cefalu Astrophysical Conference, 11-24 June 2006
title: Resilience of the Asian atmospheric circulation shown by paleogene dust provenance
Creators: name: Licht, Alexis
name: Dupont-Nivet, Guillaume
name: Pullen, Alex
name: Kapp, Paul
name: Abels, Hemmo A.
name: Lai, Zulong
name: Guo, ZhaoJie
name: Abell, Jordan
name: Giesler, Dominique
Publisher: name: Universität Potsdam
Year: 2021
Subjects: subject: 500 Naturwissenschaften und Mathematik

description: The onset of modern central Asian atmospheric circulation is traditionally linked to the interplay of surface uplift of the Mongolian and Tibetan-Himalayan orogens, retreat of the Paratethys sea from central Asia and Cenozoic global cooling. Although the role of these players has not yet been unravelled, the vast dust deposits of central China support the presence of arid conditions and modern atmospheric pathways for the last 25 million years (Myr). Here, we present provenance data from older (42-33 Myr) dust deposits, at a time when the Tibetan Plateau was less developed, the Paratethys sea still present in central Asia and atmospheric pCO(2) much higher. Our results show that dust sources and near-surface atmospheric circulation have changed little since at least 42 Myr. Our findings indicate that the locus of central Asian high pressures and concurrent aridity is a resilient feature only modulated by mountain building, global cooling and sea retreat.
description: Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe; 1114
Untitled Item
Creators: name: Degrave, Aline
name: Fagundes, Paulo Roberto
Publisher: name: figshare
Year: 2021
Subjects: subject: 119999 Medical and Health Sciences not elsewhere classified
subject: FOS: Other medical sciences
subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences

description: This project aims to discuss the phenomenon of overdiagnosis in depression based on the scientific literature, presenting how depression is understood in the contemporary biomedical context, describing how overdiagnosis manifests itself in the context of depression and considering the influence of the biomedical and categorical model of psychopathology on depression, evaluating the appropriation of the discourse of suffering by the medical field.
Precipitate stability and recrystallisation in the weld nuggets of friction stir welded Al-Mg-Si and Al-Mg-Sc alloys
Creators: name: Sauvage, Xavier
name: Dédé, Anite
name: Muñoz, Alexandra Cabello
name: Huneau, Bertrand
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Two different precipitate hardening aluminium alloys processed by friction stir welding were investigated. The microstructure and the hardness of the as delivered materials were compared to that of the weld nugget. Transmission electron microscopy observations combined with three-dimensional atom probe analyses clearly show that β;" precipitates dissolved in the nugget of the Al-Mg-Si giving rise to some supersaturated solid solution. It is shown that the dramatic softening of the weld could be partly recovered by post-welding ageing treatments. In the Al-Mg-Sc alloy, Al3Sc precipitate size and density are unchanged in the nugget comparing to the base metal. These precipitates strongly reduce the boundary mobility of recrystallised grains, leading to a grain size in the nugget much smaller than in the Al-Mg-Si alloy. Both coherent and incoherent precipitates were detected. This feature may indicate that a combination of continuous and discontinuous recrystallisation occurred in the weld nugget.
Bose-Einstein Correlations of Charged and Neutral Kaons in Deep Inelastic Scattering at HERA
Creators: name: ZEUS Collaboration
name: Chekanov, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Bose-Einstein correlations of charged and neutral kaons have been measured in e+-p deep inelastic scattering with an integrated luminosity of 121 pb-1 using the ZEUS detector at HERA. The two-particle correlation function was studied as a function of the four-momentum difference of the kaon pairs, Q_12=sqrt{-(p_1-p_2)^2}, assuming a Gaussian shape for the particle source. The values of the radius of the production volume, r, and of the correlation strength, lambda, were obtained for both neutral and charged kaons. The radii for charged and neutral kaons are similar and are consistent with those obtained at LEP.
description: 24 pages, 5 figures, 1 table submitted to Physics Letters B
Many body localization in Heisenberg XXZ magnet in a random field
Creators: name: Znidaric, Marko
name: Prosen, Tomaz
name: Prelovsek, Peter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We numerically investigate Heisenberg XXZ spin-1/2 chain in a spatially random static magnetic field. We find that tDMRG simulations of time evolution can be performed efficiently, namely the dimension of matrices needed to efficiently represent the time-evolution increases linearly with time and entanglement entropies for typical chain bipartitions increase logarithmically. As a result, we show that for large enough random fields infinite temperature spin-spin correlation function displays exponential localization in space indicating insulating behavior of the model.
description: 6 pages, 5 PS figures; v2: few minor changes, one additional figure
Random walk of magnetic field lines for different values of the energy-range spectral index
Creators: name: Shalchi, A.
name: Kourakis, I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An analytical nonlinear description of field-line wandering in partially statistically magnetic systems was proposed recently [A. Shalchi, I. Kourakis, Astronomy and Astrophysics, 470, 405 (2007)]. In this article we investigate the influence of the wave-spectrum in the energy-range onto field line random walk by applying this formulation. It is demonstrated that in all considered cases we clearly obtain a superdiffusive behaviour of the field-lines. If the energy-range spectral index exceeds unity a free-streaming behaviour of the field-lines can be found for all relevant length-scales of turbulence. Since the superdiffusive results obtained for the slab model are exact, it seems that superdiffusion is the normal behavior of field line wandering.
description: Submitted to Physics of Plasmas; 13 pages, no figures
Critique du rapport signal à bruit en communications numériques -- Questioning the signal to noise ratio in digital communications
Creators: name: Fliess, Michel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: Probability (math.PR)
subject: Rings and Algebras (math.RA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: The signal to noise ratio, which plays such an important rôle in information theory, is shown to become pointless for digital communications where the demodulation is achieved via new fast estimation techniques. Operational calculus, differential algebra, noncommutative algebra and nonstandard analysis are the main mathematical tools.
Projectivity of analytic Hilbert and Kaehler quotients
Creators: name: Greb, Daniel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 14L30, 14L24, 32M05, 53D20

description: We investigate algebraicity properties of quotients of complex spaces by complex reductive Lie groups G. We obtain a projectivity result for compact momentum map quotients of algebraic G-varieties. Furthermore, we prove equivariant versions of Kodaira's Embedding Theorem and Chow's Theorem relative to an analytic Hilbert quotient. Combining these results we derive an equivariant algebraisation theorem for complex spaces with projective quotient.
description: minor changes: title change, typos corrected, obvious issue in the statement of Thm. 3 fixed, revised proof of Prop. 6.6; 25 pages; to appear in Transactions of the AMS
Pomeron loop and running coupling effects in high energy QCD evolution
Creators: name: Dumitru, A.
name: Iancu, E.
name: Portugal, L.
name: Soyez, G.
name: Triantafyllopoulos, D. N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Within the framework of a (1+1)-dimensional model which mimics evolution and scattering in QCD at high energy, we study the influence of the running of the coupling on the high-energy dynamics with Pomeron loops. We find that the particle number fluctuations are strongly suppressed by the running of the coupling, by at least one order of magnitude as compared to the case of a fixed coupling, for all the rapidities that we have investigated, up to Y=200. This reflects the slowing down of the evolution by running coupling effects, in particular, the large rapidity evolution which is required for the formation of the saturation front via diffusion. We conclude that, for all energies of interest, processes like deep inelastic scattering or forward particle production can be reliably studied within the framework of a mean-field approximation (like the Balitsky-Kovchegov equation) which includes running coupling effects.
description: 23 pages, 8 figures
The harmonic oscillator on Riemannian and Lorentzian configuration spaces of constant curvature
Creators: name: Cariñena, José F.
name: Rañada, Manuel F.
name: Santander, Mariano
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 37J15, 37J35, 70H06, 70H33, 70G65

description: The harmonic oscillator as a distinguished dynamical system can be defined not only on the Euclidean plane but also on the sphere and on the hyperbolic plane, and more generally on any configuration space with constant curvature and with a metric of any signature, either Riemannian (definite positive) or Lorentzian (indefinite). In this paper we study the main properties of these `curved' harmonic oscillators simultaneously on any such configuration space, using a Cayley-Klein (CK) type approach, with two free parameters $\ki, \kii$ which altogether correspond to the possible values for curvature and signature type: the generic Riemannian and Lorentzian spaces of constant curvature (sphere ${\bf S}^2$, hyperbolic plane ${\bf H}^2$, AntiDeSitter sphere ${\bf AdS}^{\unomasuno}$ and DeSitter sphere ${\bf dS}^{\unomasuno}$) appear in this family, with the Euclidean and Minkowski spaces as flat limits. We solve the equations of motion for the `curved' harmonic oscillator and obtain explicit expressions for the orbits by using three different methods: first by direct integration, second by obtaining the general CK version of the Binet's equation and third, as a consequence of its superintegrable character. The orbits are conics with centre at the potential origin in any CK space, thereby extending this well known Euclidean property to any constant curvature configuration space. The final part of the article, that has a more geometric character, presents those results of the theory of conics on spaces of constant curvature which are pertinent.
description: 29 pages, 6 figures
PLE$ν$M: A global and distributed monitoring system of high-energy astrophysical neutrinos
Creators: name: Schumacher, Lisa Johanna
name: Huber, Matthias
name: Agostini, Matteo
name: Bustamante, Mauricio
name: Oikonomou, Foteini
name: Resconi, Elisa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: High-energy astrophysical neutrinos, discovered by IceCube, are now regularly observed, albeit at a low rate due to their low flux. As a result, open questions about high-energy neutrino astrophysics and particle physics remain limited by statistics at best, or unanswered at worst. Fortunately, this situation will improve soon: in the next few years, a host of new neutrino telescopes, currently under planning and construction, will come online. It is natural to combine their collected observing power: we propose the Planetary Neutrino Monitoring System (PLE$ν$M), a concept for a global repository of high-energy neutrino observations, in order to finally give firm answers to open questions. PLE$ν$M will reach up to four times the exposure available today by combining the exposures of current and future neutrino telescopes distributed around the world -- IceCube, IceCube-Gen2, Baikal-GVD, KM3NeT, and P-ONE. Depending on the declination and spectral index, PLE$ν$M will improve the sensitivity to astrophysical neutrinos by up to two orders of magnitude. We present first estimates on the capability of PLE$ν$M to discover Galactic and extragalactic sources of astrophysical neutrinos and to characterize the diffuse flux of high-energy neutrinos in unprecedented detail.
description: Presented at the 37th International Cosmic Ray Conference (ICRC 2021). 8 pages, 5 figures
Gravitational excitation of high frequency QPOs
Creators: name: Stuchlík, Zdeněk
name: Konar, Sushan
name: Miller, John C.
name: Hledík, Stanislav
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the possibility that high-frequency QPOs in neutron-star binary systems may result from forced resonant oscillations of matter in the innermost parts of the accretion disc, excited by gravitational perturbations coming from asymmetries of the neutron star or from the companion star. We find that neutron-star asymmetries could, in principle, be effective for inducing both radial and vertical oscillations of relevant amplitude while the binary companion might possibly produce significant radial oscillations but not vertical ones. Misaligned neutron-star quadrupole moments of a size advocated elsewhere for explaining limiting neutron star periods could be large enough also for the present purpose.
description: 4 pages, 1 figure; AandA Research Note
Finite quantum dissipation: the challenge of obtaining specific heat
Creators: name: Hänggi, Peter
name: Ingold, Gert-Ludwig
name: Talkner, Peter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider a free particle coupled with finite strength to a bath and investigate the evaluation of its specific heat. A harmonic oscillator bath of Drude type with cutoff frequency omega_D is employed to model an ohmic friction force with dissipation strength gamma. Two scenarios for obtaining specific heat are presented. The first one uses the measurement of the kinetic energy of the free particle while the second one is based on the reduced partition function. Both descriptions yield results which are consistent with the Third Law of thermodynamics. Nevertheless, the two methods produce different results that disagree even in their leading quantum corrections at high temperatures. We also consider the regime where the cutoff frequency is smaller than the friction strength, i.e. omega_D1.
description: 16 pages, 4 figures
Formal and Informal Model Selection with Incomplete Data
Creators: name: Verbeke, Geert
name: Molenberghs, Geert
name: Beunckens, Caroline
Publisher: name: arXiv
Year: 2008
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Model selection and assessment with incomplete data pose challenges in addition to the ones encountered with complete data. There are two main reasons for this. First, many models describe characteristics of the complete data, in spite of the fact that only an incomplete subset is observed. Direct comparison between model and data is then less than straightforward. Second, many commonly used models are more sensitive to assumptions than in the complete-data situation and some of their properties vanish when they are fitted to incomplete, unbalanced data. These and other issues are brought forward using two key examples, one of a continuous and one of a categorical nature. We argue that model assessment ought to consist of two parts: (i) assessment of a model's fit to the observed data and (ii) assessment of the sensitivity of inferences to unverifiable assumptions, that is, to how a model described the unobserved data given the observed ones.
description: Published in at http://dx.doi.org/10.1214/07-STS253 the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Approach to a Project and its Risk Assessment
Creators: name: Victoria, Artur
Publisher: name: Zenodo
Year: 2021

description: A good idea many times turns into a project intending to succeed and meet the purposed goals. When the project is born, its promoters must be conscious of unexpected difficulties. This writing is an alert for the complexity of a project and its going on and after risks. We speak in general and not to specific areas to alert future entrepreneurs of the importance of having a straight discipline in the project and the pretended goals. A nuanced approach to Risk also complements the second phase after the project is terminated.
Understanding of complex periodic transformations of moving domain walls in magnetic nanostripes
Creators: name: Lee, Jun-Young
name: Lee, Ki-Suk
name: Choi, Sangkook
name: Guslienko, Konstantin Y.
name: Kim, Sang-Koog
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The magnetic field (or electric current) driven domain-wall motion in magnetic nanostripes is of considerable interest because it is essential to the performance of information storage and logic devices. One of the currently key problems is to unveil the complex behaviors of oscillatory domain-wall motions under applied magnetic fields stronger than the so-called Walker field, beyond which the velocity of domain walls markedly drops. Here, we provide not only considerably better understandings but also new details of the complex domain-wall motions. In a certain range just above the Walker field, the motions are not chaotic but rather periodic with different unique periodicities of dynamic transformations of a moving domain wall between the different types of its internal structure. Three unique periodicities found, which consist of different types of domain wall that are transformed from type one to another. The transformation periods vary with the field strength and the nanostripe width. This novel phenomenon can be described by the dynamic motion of a limited number of magnetic topological solitons such as vortex and antivortex in nanostripes.
description: 25 pages, 4 figures
Band gap unification of partially Si-substituted single wall carbon nanotubes
Creators: name: Avramov, Pavel V.
name: Sorokin, Pavel B.
name: Fedorov, Alexander S.
name: Fedorov, Dmitri G.
name: Maeda, Yoshihito
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The atomic and electronic structure of a set of pristine single wall SiC nanotubes as well as Si-substituted carbon nanotubes and a SiC sheet was studied by the LDA plane wave band structure calculations. Consecutive substitution of carbon atoms by Si leads to a gap opening in the energetic spectrum of the metallic (8,8) SWCNT with approximately quadratic dependence of the band gap upon the Si concentration. The same substitution for the semiconductor (10,0) SWCNT results in a band gap minimum (0.27 eV) at ~25% of Si concentration. In the Si concentration region of 12-18%, both types of nanotubes have less than 0.5 eV direct band gaps at the Gamma-Gamma point. The calculation of the chiral (8,2) SWSi_0.15C_0.85NT system gives a similar (0.6 eV) direct band gap. The regular distribution of Si atoms in the atomic lattice is by ~0.1 eV/atom energetically preferable in comparison with a random distribution. Time dependent DFT calculations showed that the silicon substitution sufficiently increases (roughly by one order of magnitude) the total probability of optical transitions in the near infrared region, which is caused by the opening of the direct band gap in metallic SWCNTs, the unification of the nature and energy of band gaps of all SWCNT species, the large values of radial integrals and participation of Si3d states in chemical bonding in both valence and conductance bands.
description: 20 pages, 7 figures
Bayesian Methods for Parameter Estimation in Effective Field Theories
Creators: name: Schindler, Matthias R.
name: Phillips, Daniel R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We demonstrate and explicate Bayesian methods for fitting the parameters that encode the impact of short-distance physics on observables in effective field theories (EFTs). We use Bayes' theorem together with the principle of maximum entropy to account for the prior information that these parameters should be natural, i.e.O(1) in appropriate units. Marginalization can then be employed to integrate the resulting probability density function (pdf) over the EFT parameters that are not of specific interest in the fit. We also explore marginalization over the order of the EFT calculation, M, and over the variable, R, that encodes the inherent ambiguity in the notion that these parameters are O(1). This results in a very general formula for the pdf of the EFT parameters of interest given a data set, D. We use this formula and the simpler "augmented chi-squared" in a toy problem for which we generate pseudo-data. These Bayesian methods, when used in combination with the "naturalness prior", facilitate reliable extractions of EFT parameters in cases where chi-squared methods are ambiguous at best. We also examine the problem of extracting the nucleon mass in the chiral limit, M_0, and the nucleon sigma term, from pseudo-data on the nucleon mass as a function of the pion mass. We find that Bayesian techniques can provide reliable information on M_0, even if some of the data points used for the extraction lie outside the region of applicability of the EFT.
description: 36 pages, 4 figures, numerical errors in Sec. IV and V corrected, main conclusions unaffected
Anthalona sanoamuangae Sinev et Kotov 2012
Creators: name: Gusakov, Vladimir A.
name: Dien, Tran Duc
name: Tran, Hoan Quoc
name: Thanh, Nguyen Thi Hai
name: Huan, Phan Trong
name: Ha, Vo Thi
name: Dinh, Cu Nguyen
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Branchiopoda
Anomopoda
Chydoridae
Anthalona
Anthalona sanoamuangae

description: 17. Anthalona sanoamuangae Sinev et Kotov, 2012
Localities and specimens found: 2 – 1♀ ov, 1♀ em; 16 – 1♀ ov; 25 – 17♀, 37♀ ov, 50♀ em, 66j; 26 – 20♀, 16♀ ov, 19♀ em, 21j; 100 – 1♀; 102 – 1♀.
Distribution and ecology. This is a recently described rare species from Indochina, probably endemic to Southeast Asia. To date, it has only been found in Thailand, Laos and Vietnam (Sinev & Kotov 2012; Korovchinsky 2013; Kotov et al. 2013a, b; Sinev & Korovchinsky 2013; Zhdanova 2014; Sinev 2016; Choedchim & Maiphae 2023; present study).
The species lifestyle and ecology are little known. Most likely, this chydorid prefers running water bodies (rivers and streams) (Sinev & Kotov 2012; Sinev & Korovchinsky 2013; Sinev 2016), although it occurs in lakes and reservoirs too (Zhdanova 2014; Choedchim & Maiphae 2023). In our material, A. sanoamuangae was especially abundant in qualitative samples from the open and overgrown littoral of a small reservoir (Nos. 25, 26; see Appendix 1).
description: Published as part of Gusakov, Vladimir A., Dien, Tran Duc, Tran, Hoan Quoc, Thanh, Nguyen Thi Hai, Huan, Phan Trong, Ha, Vo Thi & Dinh, Cu Nguyen, 2025, An annotated checklist of the main representatives of meiobenthos from inland water bodies of Central and Southern Vietnam. III. Water fleas (Cladocera), pp. 401-455 in Zootaxa 5613 (3) on page 413, DOI: 10.11646/zootaxa.5613.3.1, http://zenodo.org/record/15216705
Gomphonema chemeron Jeff. R. Stone, Westover & Kociolek 2020, sp. nov.
Creators: name: Stone, Jeffery R.
name: Kociolek, J. Patrick
name: Westover, Karlyn S.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Chromista
Ochrophyta
Bacillariophyceae
Cymbellales
Gomphonemataceae
Gomphonema
Gomphonema chemeron

description: Gomphonema chemeron Jeff.R.Stone, Westover & Kociolek sp. nov. Figures 20–33
Description: Frustules in girdle view wedge-shaped with rows of coarser areolae on the mantle separated from the transapical striae by a structureless zone. Valves weakly clavate, rhomboid-lanceolate, with broadly-rounded apices. Length 38–88 µm, width 10–16 µm. Axial area wide, with a unilaterally-expanded central area due to the presence of shortened stria. Raphe lateral. Transapical striae uniseriate, distinctly radiate, 7–9 in 10 µm, but at the poles slightly denser (10 in 10 µm). Stigmata (3)4–7 present in the central area, with the number present positively related to valve length. At the border of the central area, striae on the side opposite of the stigmata often end with slightly detached, stigmoid areoles. Footpole with a bilobed apical pore field. Septa and pseudosepta are present at both poles.
In the SEM: Striae have roughly 22 (20–24) areolae in 10 µm that are coarsely punctate and uniseriate. Stigmata are expressed internally as slits and externally are simple openings. Internally, the proximal raphe ends hook sharply toward the stigmata. Proximal raphe ends lack distinctive central pores. The distal raphe ends terminate internally as small, distinct helictoglossae.
Holotype: Circled specimen on slide 585030 in the JPK Collection at the University of Colorado (COLO)(Fig. 21).
Isotype: Circled specimen on slide 585031 in the JPK Collection at the University of Colorado (COLO).
Type Locality: Baringo Basin (0.55458°N, 35.93748°E), Kenya.
Note: The species name is representative of the geological formation (Chemeron Formation) in which the diatom has been observed. To date, G. chemeron has only been observed in diatomite deposits of the Baringo Basin, Kenya approximately 2.6 million years of age.
Differential diagnosis: G. chemeron can be distinguished from G. kalahariense by the population size range, length:width ratio, and the range of number of stigmata present (see Table 1, Figs. 18, 19).
description: Published as part of Stone, Jeffery R., Kociolek, J. Patrick & Westover, Karlyn S., 2020, Two multi-stigmate Gomphonema species of Africa: Gomphonema kalahariense (nom. nov., stat. nov.) and Gomphonema chemeron (sp. nov.), pp. 270-282 in Phytotaxa 436 (3) on pages 276-279, DOI: 10.11646/phytotaxa.436.3.5, http://zenodo.org/record/13874293
Dirac Equation in the Background of the Nutku Helicoid Metric
Creators: name: Birkandan, T.
name: Hortacsu, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the solutions of the Dirac equation in the background of the Nutku helicoid metric. This metric has curvature singularities, which necessitates imposing a boundary to exclude this point. We use the Atiyah-Patodi-Singer non local spectral boundary conditions for both the four and the five dimensional manifolds.
description: 16 pages, 1 figure, TeX file using boxedeps. Replaced by the revised version
Identification of parameters in the torsional dynamics of a drilling process through Bayesian statistics
Creators: name: Sandoval, Mario Germán
name: Cunha, Americo
name: Sampaio, Rubens
Publisher: name: arXiv
Year: 2021
Subjects: subject: Methodology (stat.ME)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: I.6.6
subject: 37N15

description: This work presents the estimation of the parameters of an experimental setup, which is modeled as a system with three degrees of freedom, composed by a shaft, two rotors, and a DC motor, that emulates a drilling process. A Bayesian technique is used in the estimation process, to take into account the uncertainties and variabilities intrinsic to the measurement taken, which are modeled as a noise of Gaussian nature. With this procedure it is expected to check the reliability of the nominal values of the physical parameters of the test rig. An estimation process assuming that nine parameters of the experimental apparatus are unknown is conducted, and the results show that for some quantities the relative deviation with respect to the nominal values is very high. This deviation evidentiates a strong deficiency in the mathematical model used to describe the dynamic behavior of the experimental apparatus.
Open Science in Horizon Europe e la piattaforma di pubblicazione Open Research Europe
Creators: name: Lazzeri, Emma
Publisher: name: Zenodo
Year: 2021
Subjects: Open Science
Horizon Europe
Open Research Europe

description: With the Horizon Europe framework program, the European Commission has given a decisive boost in favor of Open Science. What are the Open Science requirements for participation in European funding? How does the new Open Research Europe publication platform fit into this context and what are its particular characteristics? this presentation has answered these questions during the "Incontri del Giovedì CNR-IEIIT" on november 25, 2021
Local controllability of quantum networks
Creators: name: Burgarth, Daniel
name: Bose, Sougato
name: Bruder, Christoph
name: Giovannetti, Vittorio
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We give a sufficient criterion that guarantees that a many-body quantum system can be controlled by properly manipulating the (local) Hamiltonian of one of its subsystems. The method can be applied to a wide range of systems: it does not depend on the details of the couplings but only on their associated topology. As a special case, we prove that Heisenberg and Affleck-Kennedy-Lieb-Tasaki chains can be controlled by operating on one of the spins at their ends. In principle, arbitrary quantum algorithms can be performed on such chains by acting on a single qubit.
description: 4 pages, 3 figures
Free and Open Source Software for Development
Creators: name: van Reijswoud, Victor
name: de Jager, Arjan
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Literature (cs.GL)
subject: FOS: Computer and information sciences

description: Development organizations and International Non-Governmental Organizations have been emphasizing the high potential of Free and Open Source Software for the Less Developed Countries. Cost reduction, less vendor dependency and increased potential for local capacity development have been their main arguments. In spite of its advantages, Free and Open Source Software is not widely adopted at the African continent. In this book the authors will explore the grounds on with these expectations are based. Where do they come from and is there evidence to support these expectations? Over the past years several projects have been initiated and some good results have been achieved, but at the same time many challenges were encountered. What lessons can be drawn from these experiences and do these experiences contain enough evidence to support the high expectations? Several projects and their achievements will be considered. In the final part of the book the future of Free and Open Source Software for Development will be explored. Special attention is given to the African continent since here challenges are highest. What is the role of Free and open Source Software for Development and how do we need to position and explore the potential? What are the threats? The book aims at professionals that are engaged in the design and implementation of ICT for Development (ICT4D) projects and want to improve their understanding of the role Free and Open Source Software can play.
description: 113 pages, ISBN 978-88-7699-131-8 (Printed edition), ISBN 978-88-7699-132-5 (Electronic edition), printed edition available at http://www.amazon.com/ and on http://stores.lulu.com/polimetrica
Realization of a semiconductor-based cavity soliton laser
Creators: name: Tanguy, Y.
name: Ackemann, T.
name: Firth, W. J.
name: Jaeger, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The realization of a cavity soliton laser using a vertical-cavity surface-emitting semiconductor gain structure coupled to an external cavity with a frequency-selective element is reported. All-optical control of bistable solitonic emission states representing small microlasers is demonstrated by injection of an external beam. The control scheme is phase-insensitive and hence expected to be robust for all-optical processing applications. The motility of these structures is also demonstrated.
Projective-anticipating, projective, and projective-lag synchronization of time-delayed chaotic systems on random networks
Creators: name: Feng, Cun-Fang
name: Xu, Xin-Jian
name: Wang, Sheng-Jun
name: Wang, Ying-Hai
Publisher: name: arXiv
Year: 2008
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We study projective-anticipating, projective, and projective-lag synchronization of time-delayed chaotic systems on random networks. We relax some limitations of previous work, where projective-anticipating and projective-lag synchronization can be achieved only on two coupled chaotic systems. In this paper, we can realize projective-anticipating and projective-lag synchronization on complex dynamical networks composed by a large number of interconnected components. At the same time, although previous work studied projective synchronization on complex dynamical networks, the dynamics of the nodes are coupled partially linear chaotic systems. In this paper, the dynamics of the nodes of the complex networks are time-delayed chaotic systems without the limitation of the partial-linearity. Based on the Lyapunov stability theory, we suggest a generic method to achieve the projective-anticipating, projective, and projective-lag synchronization of time-delayed chaotic systems on random dynamical networks and find both the existence and sufficient stability conditions. The validity of the proposed method is demonstrated and verified by examining specific examples using Ikeda and Mackey-Glass systems on Erdos-Renyi networks.
description: 14 pages, 6 figures
The nucleotide sequence of A cDNA for the rat Ia-A α chain
Creators: name: Wallis, Anne Elizabeth
Publisher: name: University of British Columbia
Year: 2010

description: The Ir genes of the Major Histocompatibility Complex have been shown to play an important role in the ability of an individual to produce an immune response. The products of the Ir genes, the Ia antigens, are highly homologous between species. To understand the structure and function of the Ia antigens it is necessary to examine the Ia molecules and the Ir genes which code for them both within and between species. The nucleotide sequence of a cDNA which corresponded to the 3' end of the Rat Ia-A α chain was determined. Comparison of this cDNA sequence with cDNA sequences from other species (mouse and human) showed that there was a much higher degree of sequence identity between the Ir gene products of equivalent loci between species than that observed between the Ir gene products of homologous loci within a species. This indicates that the duplication which gave rise to the homologous Ir gene loci occurred before the divergence of rodents and mammals.
Consumption of vegetables, fruits, physical activity, and sedentary behaviors in Thai adolescents
Creators: name: Monchutha Eiamudomkan, Tawima Sirirassamee
Publisher: name: Faculty of Medicine,Srinakharinwirot University
Year: 2014
Subjects: consumption of vegetables and fruits, physical activity, sedentary behaviors

description: 2, 21, Journal of Medicine and Health Sciences
An X-ray photometry system I: Chandra ACIS
Creators: name: Grimm, H. -J.
name: McDowell, J.
name: Fabbiano, G.
name: Elvis, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a system of X-ray photometry for the Chandra satellite. X-ray photometry can be a powerful tool to obtain flux estimates, hardness ratios, and colors unbiased by assumptions about spectral shape and independent of temporal and spatial changes in instrument characteristics. The system we have developed relies on our knowledge of effective area and the energy-to-channel conversion to construct filters similar to photometric filters in the optical bandpass. We show that the filters are well behaved functions of energy and that this X-ray photometric system is able to reconstruct fluxes to within about 20%, without color corrections, for non-pathological spectra. Even in the worst cases it is better than 50%. Our method also treats errors in a consistent manner, both statistical as well as systematic.
description: accepted by ApJ, 19 pages, 15 figures corresponding code available at http://hea-www.cfa.harvard.edu/~jcm/xray/index.html
On the classifier performance for simulation based debris detection in sar imagery
Creators: name: Kuny, S.
name: Hammer, H.
name: Schulz, K.
Publisher: name: International Society for Photogrammetry and Remote Sensing (ISPRS)
Year: 2021
Subjects: SAR simulation
debris
damage detection
texture features
classifier performance

description: Urban areas struck by disasters such as earthquakes are in need of a fast damage detection assessment. A post-event SAR image often is the first available image, most likely with no matching pre-event image to perform change detection. In previous work we have introduced a debris detection algorithm for this scenario that is trained exclusively with synthetically generated training data. A classification step is employed to separate debris from similar textures such as vegetation. In order to verify the use of a random forest classifier for this context, we conduct a performance comparison with two alternative popular classifiers, a support vector machine and a convolutional neural network. With the direct comparison revealing the random forest classifier to be best suited, the effective performance on the prospect of debris detection is investigated for the post-earthquake Christchurch scene. Results show a good separation of debris from vegetation and gravel, thus reducing the false alarm rate in the damage detection operation considerably.
title: Ultrafast Independent N-H and N-C Bond Deformation Investigated with Resonant Inelastic X-Ray Scattering
Creators: name: Eckert, Sebastian
name: Norell, Jesper
name: Miedema, Piter S.
name: Beye, Martin
name: Fondell, Mattis
name: Quevedo, Wilson
name: Kennedy, Brian
name: Hantschmann, Markus
name: Pietzsch, Annette
name: van Kuiken, Benjamin E.
name: Ross, Matthew
name: Minitti, Michael P.
name: Moeller, Stefan P.
name: Schlotter, William F.
name: Khalil, Munira
name: Odelius, Michael
name: Föhlisch, Alexander
Publisher: name: Universität Potsdam
Year: 2021
Subjects: subject: 540 Chemie und zugeordnete Wissenschaften
subject: 660 Chemische Verfahrenstechnik

description: The femtosecond excited-state dynamics following resonant photoexcitation enable the selective deformation of N-H and N-C chemical bonds in 2-thiopyridone in aqueous solution with optical or X-ray pulses. In combination with multiconfigurational quantum-chemical calculations, the orbital-specific electronic structure and its ultrafast dynamics accessed with resonant inelastic X-ray scattering at the N 1s level using synchrotron radiation and the soft X-ray free-electron laser LCLS provide direct evidence for this controlled photoinduced molecular deformation and its ultrashort time-scale.
description: Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe; 1115