cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Statistical Study on the Low-Frequency QPO Amplitude Spectrum and Amplitude in GRS 1915+105
Creators: name: Yan, Shu-Ping
name: Ding, Guo-Qiang
name: Wang, Na
name: Qu, Jin-Lu
name: Song, Li-Ming
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A statistical study was made on both the energy dependence of the low-frequency quasi-periodic oscillation (QPO) amplitude (LFQPO amplitude spectrum) and the LFQPO amplitude from all the RXTE observations of GRS 1915+105. Based on the two-branch correlation of the LFQPO frequency and the hardness ratio, the observations that were suitable for evaluating the LFQPO amplitude spectrum were divided into two groups. According to a comparison between the radio and X-ray emissions, we deduced that the jets during the two groups of observations are very different. A negative correlation between the LFQPO frequency and the radio flux was found for one group. The LFQPO amplitude spectrum was fitted by a power-law with an exponential cutoff in order to describe it quantitatively. It reveals that as the LFQPO frequency increases, the power-law hardens. And the cutoff energy firstly decreases, and then smoothly levels off. The fit also shows that the LFQPO amplitude spectra of the two groups are essentially the same, suggesting that the LFQPO seems not to originate from the jet. The LFQPO amplitude spectra are hard, indicating a possible origin of the LFQPO in the corona. As the LFQPO frequency increases, the LFQPO amplitude firstly increases and then decreases. The effects of the low pass filter and the jet on the LFQPO amplitude are discussed.
Pompeii. Kvaisstur. *Kumbennio. 140 BC. ImIt Pompei 23
Creators: name: Cappelletti, Loredana
Publisher: name: Zenodo
Year: 2023
Subjects: Pompei
Ancient Campania
Ancient Italy
Oscan Epigraphy
Sabellian Languages

description: Publication concerning the Oscan inscription ST Po 14 = Ve 18 = ImIt Pompei 23, with English and Italian translation and bibliography
Electronic transport on carbon nanotube networks: a multiscale computational approach
Creators: name: Pereira, Luiz F. C.
name: Ferreira, M. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Carbon nanotube networks are one of the candidate materials to function as malleable, transparent, conducting films, with the technologically promising application of being used as flexible electronic displays. Nanotubes disorderly distributed in a film offers many possible paths for charge carriers to travel across the entire system, but the theoretical description of how this charge transport occurs is rather challenging for involving a combination of intrinsic nanotube properties with network morphology aspects. Here we attempt to describe the transport properties of such films in two different length scales. Firstly, from a purely macroscopic point of view we carry out a geometrical analysis that shows how the network connectivity depends on the nanotube concentration and on their respective aspect ratio. Once this is done, we are able to calculate the resistivity of a heavily disordered networked film. Comparison with experiment offers us a way to infer about the junction resistance between neighbouring nanotubes. Furthermore, in order to guide the frantic search for high-conductivity films of nanotube networks, we turn to the microscopic scale where we have developed a computationally efficient way for calculating the ballistic transport across these networks. While the ballistic transport is probably not capable of describing the observed transport properties of these films, it is undoubtedly useful in establishing an upper value for their conductivity. This can serve as a guideline in how much room there is for improving the conductivity of such networks.
description: 14 pages, 13 figures
title: Hawaiʻi fishing communities’ climate change vulnerability and adaptive capacity: An exploratory framework for future studies
title: Hawaii fishing communities’ vulnerability to climate change: Climate vulnerable species and adaptive capacity
titleType: Other
Creators: name: Iwane, Mia
Publisher: name: Pacific Islands Fisheries Science Center (U.S.)
Year: 2022

description: NOAA technical memorandum NMFS PIFSC ; 136
Modulation of Thermal Conductivity in Kinked Silicon Nanowires: Phonon Interchanging and Pinching Effects
Creators: name: Jiang, Jin-Wu
name: Yang, Nuo
name: Wang, Bing-Shen
name: Rabczuk, Timon
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We perform molecular dynamics simulations to investigate the reduction of the thermal conductivity by kinks in silicon nanowires. The reduction percentage can be as high as 70% at room temperature. The temperature dependence of the reduction is also calculated. By calculating phonon polarization vectors, two mechanisms are found to be responsible for the reduced thermal conductivity: (1) the interchanging effect between the longitudinal and transverse phonon modes and (2) the pinching effect, i.e a new type of localization, for the twisting and transverse phonon modes in the kinked silicon nanowires. Our work demonstrates that the phonon interchanging and pinching effects, induced by kinking, are brand new and effective ways in modulating heat transfer in nanowires, which enables the kinked silicon nanowires to be a promising candidate for thermoelectric materials.
description: Nano. Lett. accepted (2013)
Quantifying entanglement of arbitrary-dimensional multipartite pure states in terms of the singular values of coefficient matrices
Creators: name: Li, Hui
name: Wang, Shuhao
name: Cui, Jianlian
name: Long, Gui-Lu
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The entanglement quantification and classification of multipartite quantum states are two important research fields in quantum information. In this work, we study the entanglement of arbitrary-dimensional multipartite pure states by looking at the averaged partial entropies of various bipartite partitions of the system, namely, the so-called Manhattan distance ($l_1$ norm) of averaged partial entropies (MAPE), and it is proved to be an entanglement measure for pure states. We connected the MAPE with the coefficient matrices, which are important tools in entanglement classification and reexpressed the MAPE for arbitrary-dimensional multipartite pure states by the nonzero singular values of the coefficient matrices. The entanglement properties of the $n$-qubit Dicke states, arbitrary-dimensional Greenberger-Horne-Zeilinger states, and $D_3^n$ states are investigated in terms of the MAPE, and the relation between the rank of the coefficient matrix and the degree of entanglement is demonstrated for symmetric states by two examples.
description: 6 pages, 4 figures accepted for publication in PRA
Quartic Poisson algebras and quartic associative algebras and realizations as deformed oscillator algebras
Creators: name: Marquette, Ian
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We introduce the most general quartic Poisson algebra generated by a second and a fourth order integral of motion of a 2D superintegrable classical system. We obtain the corresponding quartic (associative) algebra for the quantum analog and we extend Daskaloyannis' construction in obtained in context of quadratic algebras and we obtain the realizations as deformed oscillator algebras for this quartic algebra. We obtain the Casimir operator and discuss how these realizations allow to obtain the finite dimensional unitary irreductible representations of quartic algebras and obtain algebraically the degenerate energy spectrum of superintegrable systems. We apply the construction and the formula obtained for the structure function on a superintegrable system related to type I Laguerre exceptionnal orthogonal polynomials introduced recently.
description: 21 pages
Magnetic anisotropy and lattice dynamics in FeAs studied by Mössbauer spectroscopy
Creators: name: Blachowski, A.
name: Ruebenbauer, K.
name: Zukrowski, J.
name: Bukowski, Z.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Iron mono-arsenide in the powder form has been investigated by transmission 57Fe Moessbauer spectroscopy in the temperature range 4.2 - 1000 K. Additional spectra have been obtained at 20 K and 100 K applying external magnetic field of 7 T. It was found that the spin spiral propagating along the c-axis leads to the complex variation of the hyperfine magnetic field amplitude with the spin orientation varying in the a-b plane. The magnitude of the hyperfine field pointing in the direction of the local magnetic moment depends on the orientation of this moment in the a-b plane. Patterns are vastly different for iron located in the [0 k 0] positions and for iron in the [0 k+1/2 0] positions within the orthorhombic cell set to the Pnma symmetry. Lattice softens upon transition to the paramagnetic state at 69.2 K primarily in the a-c plane as seen by iron atoms. This effect is quite large considering lack of the structural transition. Two previously mentioned iron sites are discernible in the paramagnetic region till 300 K by different electron densities on the iron nuclei. The anisotropy of the iron vibrations developed at the transition to the paramagnetic state increases with the temperature in accordance with the harmonic approximation, albeit tends to saturation at high temperatures indicating gradual onset of the quasi-harmonic conditions. It seems that neither hyperfine fields nor magnetic moments are correct order parameters in light of the determined static critical exponents. Sample starts to loose arsenic at about 1000 K and under vacuum.
Statistical Characterization of Self-Assembled Colloidal Crystals by Single-Step Vertical Deposition
Creators: name: Isotalo, Tero J.
name: Tian, Yao-Lan
name: Konttinen, Mikko P.
name: Maasilta, Ilari J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have statistically characterized the self-assembly of multi-layer polystyrene colloidal crystals, using the technique of vertical deposition, with parameters chosen to produce thick layers of self-assembled crystals in one deposition step. In addition, using a lithographically directed self-assembly method, we have shown that the size of multi-layer, continuous crack-free domains in lithographically defined areas can be many times larger than in the surrounding areas. In a single deposition step, we have produced continuous colloidal crystal films of 260 nm diameter polystyrene spheres approximately 30 -- 40 layers thick, with a controllable lateral size of 80 -- 100 $\upmu$m without lithography, and as high as 250 $\upmu$m with the lithographic template.
Parameter calculation and result statistics of species abundance distribution (SAD) model
Creators: name: Gao, Junfeng
name: su, qiang
Publisher: name: figshare
Year: 2022
Subjects: Community ecology (excl. invasive species ecology)

description: DATA-SAD datasets.zip: SAD original data, including CBC, GENTRY, MCDB, NABC, FRAG and RFISH
 Results of parameter calculation.zip: Calculation results of sad model parameters and goodness of fit of each database
 The calculator code.R: Calculate SAD model parameters and statistical test values of six SAD models for each database
 The statistical code.R: Statistics of test values of six SAD models for each database (“Results of parameter calculation” need to be input)
High-dimensional quantum state transfer through a quantum spin chain
Creators: name: Qin, Wei
name: Wang, Chuan
name: Long, Gui-Lu
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we investigate a high-dimensional quantum state transfer protocol. An arbitrary unknown high-dimensional state can be transferred with high fidelity between two remote registers through a XX coupling spin chain of arbitrary length. The evolution of the state transfer is determined by the natural dynamics of the chain without external modulation and coupling strength engineering. As a consequence, entanglement distribution with high efficiency can be achieved. Also the strong field and high spin quantum number can counteract partly the effect of finite temperature to ensure high fidelity of the protocol when the quantum data bus is in the thermal equilibrium state under an external magnetic field.
description: 7 pages, 4 figures
Quasicoherent sheaves on toric schemes
Creators: name: Rohrer, Fred
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 14M25 (Primary) 13A02, 13D45, 52B05 (Secondary)

description: Let X be the toric scheme over a ring R associated with a fan Sigma. It is shown that there are a group B, a B-graded R-algebra S and a graded ideal I of S such that there is an essentially surjective, exact functor ~ from the category of B-graded S-modules to the category of quasicoherent O_X-modules that vanishes on I-torsion modules and that induces for every B-graded S-module F a surjection Xi_F from the set of I-saturated graded sub-S-modules of F onto the set of quasicoherent sub-O_X-modules of ~F. If Sigma is simplicial, the above data can be chosen such that ~ vanishes precisely on I-torsion modules and that Xi_F is bijective for every F. In case R is noetherian, a toric version of the Serre-Grothendieck correspondence is proven, relating sheaf cohomology on X with B-graded local cohomology with support in I.
description: To appear in Expositiones Mathematicae; corrected typos
Low-symmetry monoclinic phase stabilized by oxygen octahedra rotations in thin strained EuxSr1-xTiO3 films
Creators: name: Morozovska, Anna N.
name: Gu, Yijia
name: Khist, Victoria V.
name: Glinchuk, Maya D.
name: Chen, Long-Qing
name: Gopalan, Venkatraman
name: Eliseev, Eugene A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using Landau-Ginzburg-Devonshire theory and phase field modeling, we explore the complex interplay between the long-range structural order parameter (oxygen octahedron rotations) and polarization in EuxSr1-xTiO3 thin epitaxial films. In biaxially tensile strained films, we discover the presence of a low symmetry monoclinic phase with in-plane ferroelectric polarization that is stabilized by antiferrodistortive oxygen octahedra tilts. The monoclinic phase is stable in a wide temperature range, and is characterized by the large number of energetically equivalent polar and structural twin domains, which stimulates easy twinning of the film and thus enhances its effective piezoelectric response. The flexoelectric coupling and rotostriction give rise to additional spontaneous polarization, piezo- and pyro-electricity in the ferroelastic twin boundaries.
description: 23 pages, 5 figures, 1 table, 3 appendices
Electronic Instability in a Zero-Gap Semiconductor: the Charge-Density Wave in (TaSe4)2I
Creators: name: Tournier-Colletta, C.
name: Moreschini, L.
name: Autès, G.
name: Moser, S.
name: Crepaldi, A.
name: Berger, H.
name: Walter, A. L.
name: Kim, K. S.
name: Bostwick, A.
name: Monceau, P.
name: Rotenberg, E.
name: Yazyev, O. V.
name: Grioni, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report a comprehensive study of the paradigmatic quasi-1D compound (TaSe4)2I performed by means of angle-resolved photoemission spectroscopy (ARPES) and first-principles electronic structure calculations. We find it to be a zero-gap semiconductor in the non-distorted structure, with non-negligible interchain coupling. Theory and experiment support a Peierls-like scenario for the CDW formation below T_CDW = 263 K, where the incommensurability is a direct consequence of the finite interchain coupling. The formation of small polarons, strongly suggested by the ARPES data, explains the puzzling semiconductor-to-semiconductor transition observed in transport at T_CDW.
description: 5 pages, 3 figures
Correlation Functions of the SU(infinity) Principal Chiral Model
Creators: name: Cubero, Axel Cortes
name: Orland, Peter
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We obtain exact matrix elements of physical operators of the (1+1)-dimensional nonlinear sigma model of an SU(N)-valued bare field, in the 't Hooft limit N goes to infinity. Specifically, all the form factors of the Noether current and the stress-energy-momentum tensor are found with an integrable bootstrap method. These form factors are used to find vacuum expectation values of products of these operators.
description: Further typographical errors corrected to conform to the published version (which will appear in Physical Review D). Still revtex, 12 pages
Continuous deformations of polyhedra that do not alter the dihedral angles
Creators: name: Alexandrov, Victor
Publisher: name: arXiv
Year: 2012
Subjects: subject: Metric Geometry (math.MG)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 52C25, 52B70, 52C22, 51M20, 51K05

description: We prove that, both in the hyperbolic and spherical 3-spaces, there exist nonconvex compact boundary-free polyhedral surfaces without selfintersections which admit nontrivial continuous deformations preserving all dihedral angles and study properties of such polyhedral surfaces. In particular, we prove that the volume of the domain, bounded by such a polyhedral surface, is necessarily constant during such a deformation while, for some families of polyhedral surfaces, the surface area, the total mean curvature, and the Gauss curvature of some vertices are nonconstant during deformations that preserve the dihedral angles. Moreover, we prove that, in the both spaces, there exist tilings that possess nontrivial deformations preserving the dihedral angles of every tile in the course of deformation.
description: 12 pages, 3 figures. In version 2, two footnotes and one reference are added; Remark 3.3 is modified
Top-antitop pair hadroproduction in association with a heavy boson at the NLO QCD accuracy + Parton Shower
Creators: name: Garzelli, M. V.
name: Kardos, A.
name: Papadopoulos, C. G.
name: Trocsanyi, Z.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The PowHel framework allows to make predictions of total and differential cross-sections of multiparticle hadroproduction processes at both NLO QCD accuracy and NLO QCD matched to Parton Shower, on the basis of the interface between the POWHEG-BOX and HELAC-NLO codes. It has already been applied to study several processes involving a top-antitop pair in association with a third particle or hadronic jet. Our most recent predictions concern top-antitop-V hadroproduction (with V = W or Z), at both parton and hadron level, by considering different decay channels (hadronic and leptonic) of the heavy particles. In particular, we show the results of our phenomenological analyses under the same system of cuts also recently adopted by the CMS collaboration at LHC.
description: 4 pages, 2 figures, Proceedings of TOP 2012 - 5th International Workshop on Top Quark Physics, September 16 - 21 2012, Winchester, UK
Global $C^2$ estimates for convex solutions of curvature equations
Creators: name: Guan, Pengfei
name: Ren, Changyu
name: Wang, Zhizhang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We establish $C^2$ a priori estimate for convex hypersurfaces whose principal curvatures $κ=(κ_1,..., κ_n)$ satisfying Weingarten curvature equation $σ_k(κ(X))=f(X,ν(X))$. We also obtain such estimate for admissible 2-convex hypersurfaces in the case $k=2$. Our estimates resolve a longstanding problem in geometric fully nonlinear elliptic equations.
Breaking conformal invariance- Large N Chern-Simons theory coupled to massive fundamental fermions
Creators: name: Frishman, Yitzhak
name: Sonnenschein, Jacob
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze the theory of massive fermions in the fundamental representation coupled to a U(N) Chern-Simons gauge theory at level K. It is done in the large N, large K limits where λ=N/K is kept fixed. Following arXiv:1110.4386 we obtain the solution of a Schwinger-Dyson equation for the two point function, the exact expression for the fermion propagator and the partition function at finite temperature. We prove that in the large K limit there exists an infinite set of classically conserved high spin currents also when a mass is introduced, breaking the conformal invariance. In analogy to the seminal work of 't Hooft on two dimensional QCD, we write down a Bethe-Salpeter equation for the wave function of a "quark anti-quark" bound state. We show that unlike the two dimensional QCD case, the three dimensional Chern-Simons theory does not admit a confining spectrum.
description: 17 pages,2 figures, comments and acknowledgements added
Facilitating Machine to Machine (M2M) Communication using GSM Network
Creators: name: Chirayil, Beena Joy
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In this paper a method to facilitate M2M communication using existing GSM networks is proposed - as M2M devices primarily use SMS as their data bearer, the focus is on increasing the number of devices that can use the associated GSM signaling channels at a time. This is achieved by defining a new class of low mobility, static M2M devices which use a modified physical layer control frame structure. The proposal is expected to aid a quick, reliable and cost-effective deployment of M2M devices in the existing GSM networks.
ANALYSIS OF LANDSLIDE TRIGGERED BY HEAVY RAINFALL: A CASE STUDY KINDO DIDAYE, WOLAITA ZONE
Creators: name: HALELUYA TESFAYE
Publisher: name: Zenodo
Year: 2020

description: Landslide and its impacts are a common natural hazard that affects the day to day activity of human being. Especially in developing countries like Ethiopia the effect is high. The increasing number of population in highlands of Ethiopia and the weather change together makes the country vulnerable to the landslide to occur. Nowadays Heavy Rainfall is one of the results of weather change that is commonly occurring in Ethiopia. Not only this but also landslide as a result of this heavy rainfall is common incident in Ethiopia. The mountainous parts of Ethiopia are highly affected by such kinds of incident. In the study area, Kindo Didaye which is mountainous, landslide after heavy rainfall is repeatedly occurring. This incident is affecting the life of the people living in the area. It destroys their farm land, kills their cattle, and displaces the people. This research will analyze the landslide which is triggered by heavy rainfall in Kindo Didaye. For the study primary and secondary data were used. The primary data was collected from highly affected areas of the Woreda. The secondary data were taken from Wolaita Sodo University, hydraulics department staff who worked in the area. Using the primary data collected from the area different laboratory tests such as moisture content, sieve analysis, direct shear test, hydrometer analysis, Atterberg limit, and specific gravity tests were conducted. The moisture content of the soil showed that there was high amount of water in the soil. From the sieve analysis and specific gravity test the researcher found out that more that 50% of the soil is sandy soil. The hydrometer analysis showed there is silt content in the soil
Explicit description of spherical rigid hypersurfaces in C^2
Creators: name: Ezhov, Vladimir
name: Schmalz, Gerd
Publisher: name: arXiv
Year: 2013
Subjects: subject: Complex Variables (math.CV)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 32V40

description: We provide an explicit description of all rigid hypersurfaces that are equivalent to a Heisenberg sphere. These hypersurfaces are determined by 4 real parameters. The defining equations of the rigid spheres can also be viewed as the complete solution of a non-linear PDE that expresses the vanishing Cartan curvature condition for rigid hypersurfaces.
Die Keramik der Trichterbecherkultur aus dem Megalithgrab von Ostenwalde, Kr. Aschendorf-Hümmling
Creators: name: Fansa, Mamoun
Publisher: name: DGUF e.V.
Year: 2017

description: [nicht vorhanden / not available]
description: Archäologische Informationen, Bd. 4 (1978): Archäologische Informationen
A simple, reliable, and no-destructive method for the measurement of vacuum pressure
Creators: name: Yuan, Jinpeng
name: Ji, Zhonghua
name: Zhao, Yanting
name: Chang, Xuefang
name: Xiao, Liantuan
name: Jia, Suotang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present a simple, reliable, and no-destructive method for the measurement of vacuum pressure in a magneto-optical trap. The vacuum pressure is verified to be proportional to collision rate constant between cold atoms and background gas with a coefficient k, which can be calculated by simple ideal gas law. The rate constant for loss due to collisions with all background gases can be derived from the total collision loss rate by a series of loading curve of cold atoms under different trapping laser intensities. The presented method is also applicable for other cold atom systems and meets the miniaturization requirement of commercial applications.
description: submitted to Appl. Phys. B. arXiv admin note: text overlap with arXiv:1203.0189 by other authors
Textil und Tracht als Zeugnis von Bevölkerungsverschiebungen
Creators: name: Hägg, Inga
Publisher: name: DGUF e.V.
Year: 2017

description: [nicht vorhanden / not available]
description: Archäologische Informationen, Bd. 19, Nr. 1&2 (1996): Archäologische Informationen
Establishing a national Beacon version 2 network for real-time genomics data discovery
Creators: name: Taouk, Kamile
name: Lin, Angela
name: Wong-Erasmus, Marie
name: Cowley, Mark
name: Boughtwood, Tiffany
name: Christiansen, Jeff
name: Copty, Joe
name: Ravishankar, Shyamsundar
name: Davies, Kylie
name: Downton, Matthew
name: Druken, Kelsey
name: Evans, Ben
name: Gaff, Clara
name: Gilbert, Andrew
name: Hall, Christina
name: Hobbs, Matthew
name: Hofmann, Oliver
name: Holliday, Jessica
name: Kaplan, Warren
name: Koufariotis, Ross
name: Kummerfeld, Sarah
name: Leonard, Conrad
name: Lonie, Andrew
name: Marks, Heath
name: McCafferty, Siobhann
name: Monro, David
name: Patterson, Andrew
name: Pearson, John
name: Pope, Bernard
name: Reisinger, Florian
name: Robinson, Andrew
name: San Kho Lin, Victor
name: Scullen, John
name: Shadbolt, Marion
name: Treloar, Andrew
name: Wang, Jingbo
name: Wood, Scott
name: Syed, Mustafa
Publisher: name: Zenodo
Year: 2022
Subjects: Data commons
Big data
Data sharing
Beacon
Network

description: Aggregating data within the realm of rare diseases and cancers is paramount to gaining statistically significant insights into these diseases. To achieve this, the Australian BioCommons has launched the Human Genome Platforms Project (HGPP) to align and build on global standards such as the Global Alliance for Global Health's Beacon specification. This involves the collaboration of numerous institutes across several sub-projects focused on Data Access Control (DAC) automation, federated identity management and data archiving. Here, we outline our methods and associated challenges with implemented the Beacon version 2 protocol, as well as the Beacon Network and interface.
Thomson Scattering and Collisional Ionization in the X-rays Grating Spectra of the Recurrent Nova U Scorpii
Creators: name: Orio, M.
name: Behar, E.
name: Gallagher, J.
name: Bianchini, A.
name: Chiosi, E.
name: Luna, G. J. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a Chandra observation of the recurrent nova U Scorpii, done with the HRC-S detector and the LETG grating on day 18 after the observed visual maximum of 2010, and compare it with XMM-Newton observations obtained in days 23 and 35 after maximum. The total absorbed flux was in the range 2.2-2.6 x 10^(-11) erg cm^(-2) s^(-1), corresponding to unabsorbed luminosity 7-8.5 x 10^(36)x(d/12 kpc)^2 for N(H)=2-2.7x10^(21) cm^(-2). On day 18, 70% of the soft X-tray flux was in a continuum typical of a very hot white dwarf (WD) atmosphere, which accounted for about 80% of the flux on days 23 and 35. In addition all spectra display very broad emission lines, due to higher ionization stages at later times. With Chandra we observed apparent P Cygni profiles. We find that these peculiar profiles are not due to blue shifted absorption and red shifted emission in photoionized ejecta, like the optical P Cyg of novae, but they are rather a superposition of WD atmospheric absorption features reflected by the already discovered Thomson scattering corona, and emission lines due to collisional ionization in condensations in the ejecta. On days 23 and 35 the absorption components were no longer measurable, having lost the initial large blue shift that displaced them from the core of the broad emission lines. We interpret this as indication that mass loss ceased between day 18 and day 23. On day 35, the emission lines spectrum became very complex, with several different components. Model atmospheres indicate that the WD atmospheric temperature was about 730,000 K on day 18 and reached 900,000 K--one million K on day 35. This peak temperature is consistent with a WD mass of at least 1.3 M(sol).
description: MNRAS, January 11 2013
Die Ur- und Frühgeschichte als akademische Disziplin: Bemerkungen zur gegenwärtigen Diskussion
Creators: name: Eggert, Manfred K. H.
Publisher: name: DGUF e.V.
Year: 2017

description: [nicht vorhanden / not available]
description: Archäologische Informationen, Bd. 20, Nr. 1 (1997): Archäologische Informationen
YR_DB_RUNTIME_VERIF: A FRAMEWORK FOR VERIFYING SQL CORRECTNESS PROPERTIES OF GUI SOFTWARE AT RUNTIME
Creators: name: Noundou Noumbissi, Xavier
Publisher: name: Zenodo
Year: 2023
Subjects: model–based testing
reactive system analysis
computer software program analysis
computer software dynamic program analysis
software integration testing with SQL and GUI
runtime monitoring

description: Software correctness properties are essential to maintain
 quality by continuous and regressive integration testing, as well as
 runtime monitoring the program after customer deployment. This paper
 presents an effective and lightweight C++ program verification framework:
 YR_DB_RUNTIME_VERIF, to check SQL (Structure Query Language) [30]
 software correctness properties specified as temporal safety properties [11].
 A temporal safety property specifies what behavior shall not occur, in
 a software, as sequence of program events. YR_DB_RUNTIME_VERIF allows
 specification of a SQL temporal safety property by means of a very small
 state diagram [29]; such a state diagram, would only be specified by a
 start and an accepting state, and by a pre- and post-condition on the
 state diagram transition between them. In YR_DB_RUNTIME_VERIF, a spec-
 ification characterizes effects of program events (via SQL statements) on
 database table columns by means of set interface operations (∈, ∈), and,
 enable to check these characteristics hold or not at runtime. Integration
 testing is achieved for instance by expressing a state diagram that
 encompasses both Graphical User Interface (GUI) states and MySQL [25]
 databases queries that glue them. For example, a simple specification
 would encompass states between ’Department administration’ and ’Stock
 listing’ GUI interfaces, and transitions between them by means of MySQL
 databases operations. YR_DB_RUNTIME_VERIF doesn’t generate false warn-
 ings; YR_DB_RUNTIME_VERIF specifications are not desirable (forbidden)
 specifications (fail traces). This paper focuses its examples on MySQL
 database specifications, labeled as states diagrams events, for the
 newly developed and FOSS (Free and Open Source Software) Enterprise
 Resource Planing Software YEROTH–ERP–3.0 [26].
description: Submitted to SPLASH-ICTSS 2023 conference proceedings in Bergamo (Italy).
Cosmological constant and vacuum energy: old and new ideas
Creators: name: Sola, Joan
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The cosmological constant (CC) term in Einstein's equations, Lambda, was first associated to the idea of vacuum energy density. Notwithstanding, it is well-known that there is a huge, in fact appalling, discrepancy between the theoretical prediction and the observed value picked from the modern cosmological data. This is the famous, and extremely difficult, "CC problem". Paradoxically, the recent observation at the CERN Large Hadron Collider of a Higgs-like particle, should actually be considered ambivalent: on the one hand it appears as a likely great triumph of particle physics, but on the other hand it wide opens Pandora's box of the cosmological uproar, for it may provide (alas!) the experimental certification of the existence of the electroweak (EW) vacuum energy, and thus of the intriguing reality of the CC problem. Even if only counting on this contribution to the inventory of vacuum energies in the universe, the discrepancy with the cosmologically observed value is already of 55 orders of magnitude. This is the (hitherto) "real" magnitude of the CC problem, rather than the (too often) brandished 123 ones from the upper (but fully unexplored!) ultrahigh energy scales. Such is the baffling situation after 96 years of introducing the Lambda-term by Einstein. In the following I will briefly (and hopefully pedagogically) fly over some of the old and new ideas on the CC problem. Since, however, the Higgs boson just knocked our door and recalled us that the vacuum energy may be a fully tangible concept in real phenomenology, I will exclusively address the CC problem from the original notion of vacuum energy, and its possible "running" with the expansion of the universe, rather than venturing into the numberless attempts to replace the CC by the multifarious concept of dark energy.
description: 86 pages, substantially extended discussion, many new references added
Stochastic coupling in two modes systems: the weak-strong coupling transition
Creators: name: Freitas, Dagoberto S.
name: Nemes, M. C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the weak-strong coupling transition of two linearly coupled systems under the influence of a phase fluctuating coupling. In the weak coupling regime the exponential decay of quantum properties is well known. A different scenario occurs in the strong coupling regime, the inhibition of the dynamics which tends to "freeze" as the ration between coupling strength and average phase fluctuation time increase. Exciton-polariton oscillations and the self-trapping phenomenon in Bose-Einstein Condensate qualitatively illustrate the weak and strong regimes respectively.
Revisiting Riccioli's free fall calculations
Creators: name: Warren, Patrick B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: In 1651 Giovanni Riccioli reported the earliest accurate measurements the acceleration due to gravity, g, from pendulum-timed free fall experiments. The use of Huygens' pendulum formula (published 1673) allows one to deduce the pendulum length from this data, free from assumptions about the conversion to modern units, and independent of the actual value of g. When this length is compared to the reported pendulum length, a 15% systematic error is revealed. This could perhaps be attributed to the difficulty Riccioli faced in subdividing the contemporary unit of length (the Roman foot) to the requisite millimeter accuracy.
description: 2 pages, 1 figure, 1 table, RevTeX4-1
A Universal Scaling for the Energetics of Relativistic Jets From Black Hole Systems
Creators: name: Nemmen, Rodrigo S.
name: Georganopoulos, Markos
name: Guiriec, Sylvain
name: Meyer, Eileen T.
name: Gehrels, Neil
name: Sambruna, Rita M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Black holes generate collimated, relativistic jets which have been observed in gamma-ray bursts (GRBs), microquasars, and at the center of some galaxies (active galactic nuclei; AGN). How jet physics scales from stellar black holes in GRBs to the supermassive ones in AGNs is still unknown. Here we show that jets produced by AGNs and GRBs exhibit the same correlation between the kinetic power carried by accelerated particles and the gamma-ray luminosity, with AGNs and GRBs lying at the low and high-luminosity ends, respectively, of the correlation. This result implies that the efficiency of energy dissipation in jets produced in black hole systems is similar over 10 orders of magnitude in jet power, establishing a physical analogy between AGN and GRBs.
description: Published in Science, 338, 1445 (2012), DOI: 10.1126/science.1227416. This is the author's version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. Corrected typo in equation 4 of the supplementary material
CP Violation in $B^0_s \to K^-π^+$, $B^0 \to K^+π^-$ Decays and Tests for SU(3) Flavor Symmetry Predictions
Creators: name: He, Xiao-Gang
name: Li, Siao-Fong
name: Lin, Hsiu-Hsien
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The LHCb collaboration has recently measured the first direct CP violation in $B^0_s$ decays with a rate asymmetry $A_{CP}(B^0_s\to K^- π^+)$ given by $0.27 \pm 0.04(stat)\pm 0.01(syst)$. At the same time they also made the most precise measurement for $A_{CP}(B^0 \to K^+ π^-) = -0.080\pm 0.007(stat)\pm 0.003(syst)$. These data confirm the predicted relation, $A_{CP}(B^0 \to K^+ π^-)/A_{CP}(B^0_s \to K^- π^+) = - Br(B^0_s\to K^- π^+)τ_{B^0}/Br(B^0 \to K^+ π^-)τ_{B^0_s}$, in the standard model with SU(3) flavor symmetry. We discuss possible modifications due to SU(3) breaking effects to this relation. There are several other similar relations in B decays. Using current available data we study whether relevant relations hold in $B^0$ and $B^0_s$ to $PP$ and $PV$ decays. Here $P$ and $V$ indicate pesudoscalar and vector mesons in the flavor octet representations.
description: RevTex, 16 pages with no figures. A new reference added and some minor modifications
On the existence of a glass transition in a Random Energy Model
Creators: name: Angeletti, Florian
name: Bertin, Eric
name: Abry, Patrice
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider a generalized version of the Random Energy Model in which the energy of each configuration is given by the sum of $N$ independent contributions ("local energies") with finite variances but otherwise arbitrary statistics. Using the large deviation formalism, we find that the glass transition generically exists when local energies have a smooth distribution. In contrast, if the distribution of the local energies has a {Dirac mass} at the minimal energy (e.g., if local energies take discrete values), the glass transition ceases to exist if the number of energy levels grows sufficiently fast with system size. This shows that statistical independence of energy levels does not imply the existence of a glass transition.
description: 12 pages, 2 figures, submitted to J.Phys.A
Pulse to pulse flux density modulation from pulsars at 8.35 GHz
Creators: name: Maron, O.
name: Serylak, M.
name: Kijak, J.
name: Krzeszowski, K.
name: Mitra, D.
name: Jessner, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Aims. To investigate the flux density modulation from pulsars and the existence of specific behaviour of modulation index versus frequency. Methods. Several pulsars have been observed with the Effelsberg radio telescope at 8.35 GHz. Their flux density time series have been corrected for interstellar scintillation effects. Results. We present the measurement of modulation indices for 8 pulsars. We confirm the presence of a critical frequency at ~1 GHz for these pulsars (including 3 new ones from this study). We derived intrinsic modulation indices for the resulting flux density time series. Our data analysis revealed strong single pulses detected from 5 pulsars.
description: accepted for publication in A&A
Theoretical study of the reactions of propargyl radical with methanol and ethanol
Creators: name: Tian, Pengzhen
name: Shi, Gai
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Neuroscience
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: The C3H3• + CH3OH and C3H3• + C2H5OH reactions were characterised using MP2 and M06-2X theories. For the two reactions, a total of seven channels have been described, including the H-abstraction channels and OH-transfer channels. Potential energy diagrams for the named reactions have been evaluated at the CCSD(T)/CBS//MP2/cc-pVTZ level of theory. The kinetic study was conducted over the temperature range of 300–1500 K using CVT/SCT, CVT and TST methods. Note that the tunnelling effect was significant over low temperatures and the fitting parameters of Arrhensive formula were given. H-abstraction from the –CH3 group (CH3OH) and –CH2 group (C2H5OH) were identified as dominant channels less than 1000 K. While, the OH-transfer channel producing C3H4OH was an important channel higher than 1300 K.
Pseudo-differential calculus on homogeneous trees
Creators: name: Masson, Etienne Le
Publisher: name: arXiv
Year: 2013
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In the objective of studying concentration and oscillation properties of eigenfunctions of the discrete Laplacian on regular graphs, we construct a pseudo-differential calculus on homogeneous trees, their universal covers. We define symbol classes and associated operators. We prove that these operators are bounded on L^2 and give adjoint and product formulas. Finally we compute the symbol of the commutator of a pseudo-differential operator with the Laplacian.
Theoretical investigations of structural, spectroscopic and electron collision data of acetone
Creators: name: Prajapati, D.
name: Vinodkumar, P. C.
name: Limbachiya, C.
name: Vinodkumar, M.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer

description: Comprehensive computational studies are carried out for the structural, spectroscopic and electron collision data of acetone. The time-dependent density functional theory (TDDFT) is employed to compute singlet and triplet vertical excitation energies and to determine their valence/Rydberg character. Excellent correlation is obtained between the predicted spectral features with the available experimentally observed spectral features. We also report a detailed study on the e-acetone interactions for the comprehensive energy range starting from 0.1 to 5000 eV. We found a smooth matching of R-matrix and SCOP data for total cross sections at 17 eV and hence are able to estimate the total cross sections over such a wide energy range. Moreover, the study is augmented with additional data on Eigenphase sum, differential cross sections (DCS), momentum transfer cross sections (MTCS), electronic excitation cross-sections, symmetry decomposition of elastic cross sections, inelastic cross sections, etc. Ionisation cross-sections are computed using Complex scattering Potential-ionisation contribution (CSP-ic) and Binary Encounter Bethe (BEB) formalisms. Transport coefficients such as mean free path, diffusion and mobility coefficients are calculated from the effective collision frequency and the rate coefficients are estimated over a wide electron temperature range for elastic and inelastic processes. Importantly, we have been able to identify new resonances (π∗; σ∗ and δ∗) from the present study. The theoretical data obtained here will be of great use in varieties of applications involving acetone.
A polarizability driven ab initio molecular dynamics approach to stimulating Raman activity: Application to C20
Creators: name: Pierre-Jacques, Dominick
name: Tyler, Ciara
name: Dyke, Jason
name: Kaledin, Alexey L.
name: Kaledin, Martina
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified

description: We describe a novel variant of the driven molecular dynamics (DMD) method derived for probing Raman active vibrations. The method is an extension of the conventional μ-DMD formulation for simulating IR activity by means of coupling an oscillating electric field to the molecule’s dipole moment, μ, and inducing absorption of energy via tuning the field to a resonant frequency. Presently, we modify the above prescription to invoke Raman activity by coupling two electric fields, i.e. a ‘Pump’ photon of frequency ωP and a Stokes photon of frequency ωS to the molecule’s polarizability tensor, α, with the difference in the frequencies ω = ωP – ωS corresponding to the Stokes Raman shift. If ω is close to a Raman active vibrational frequency, energy absorption ensues. Varying ω allows identifying and assigning all Raman active vibrational modes, including anharmonic corrections, by means of trajectory analysis. We show that only one element of the full polarizability tensor, and its nuclear derivative, is needed for an α-DMD trajectory, making this method well suited for ab initio dynamics implementation. Numerical results using first-principles calculations are presented and discussed for the vibrational fundamentals, combination bands, overtones of H2O, CH4, and the C20 fullerene.