cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nano-Confinement Effects on Liquid Pressure
Creators: name: Zou, An
name: Maroo, Shalabh C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this work, molecular dynamics simulations are performed to estimate the equilibrium pressure of liquid confined in nanopores. The simulations show that the pressure is highly sensitive to the pore size and can significantly change from absolute positive to negative values for a very small (0.1 nm) change in pore size. The contribution from the solid-liquid interaction always dominates the pressure in the first liquid layer adjacent to the surface and the sensitiveness of pressure on the pore size is due to the atom distribution in the liquid layers. A surface influence number S is introduced to quantitatively characterize the degree of the confinement. The S number decreases with increasing pore size based on a power law function at constant system temperature. In nanopores with large S number, the pore liquid pressure is found to be independent of bulk liquid pressure while the pore pressure increases with bulk pressure in nanopores with small S number.
description: 13 pages, 9 figures, Appendix available upon request, Submitting to a Journal
Measurement of charm fragmentation ratios and fractions in photoproduction at HERA
Creators: name: ZEUS Collaboration
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The production of D^*+, D^0, D^+, D_s^+ and Lambda_c^+ charm hadrons and their antiparticles in ep scattering at HERA was measured with the ZEUS detector using an integrated luminosity of 79 pb^-1. The measurement has been performed in the photoproduction regime with the exchanged-photon virtuality Q^2 < 1 GeV^2 and for photon-proton centre-of-mass energies in the range 130 < W < 300 GeV. The charm hadrons were reconstructed in the range of transverse momentum p_T(D, Lambda_c) > 3.8 GeV and pseudorapidity |eta(D, Lambda_c)| < 1.6. The production cross sections were used to determine the ratio of neutral and charged D-meson production rates, R_u/d, the strangeness-suppression factor, gamma_s, and the fraction of charged D mesons produced in a vector state, P_v^d. The measured R_u/d and gamma_s values agree with those obtained in deep inelastic scattering and in e^+e^- annihilations. The measured P_v^d value is smaller than, but consistent with, the previous measurements. The fractions of c quarks hadronising as a particular charm hadron, f(c -> D, Lambda_c), were derived in the given kinematic range. The measured open-charm fragmentation fractions are consistent with previous results, although the measured f(c -> D^*+) is smaller and f(c -> Lambda_c^+) is larger than those obtained in e^+e^- annihilations. These results generally support the hypothesis that fragmentation proceeds independently of the hard sub-process.
description: 29 pages, 5 figures, 6 tables; minor text revisions
Text: Story of the woman married to a boa
Creators: name: Criollo Jr., Jorge
name: Dabkowski, Maksymilian
name: Quenamá, Leidy
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: con

description: A girl met a boa and saw him as a man. She fell in love with him, they got married, had a family, and the boa took the girl's entire family to the river.
The Coulomb four-body problem in a classical framework: Triple photoionization of lithium
Creators: name: Emmanouilidou, Agapi
name: Rost, Jan M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Formulating a quasiclassical approach we determine the cross section for the complete four-body break-up of the lithium ground state following single photon absorption from threshold up to 220 eV excess energy. In addition, we develop a new classification scheme for three-electron ionizing trajectories in terms of electron-electron collisions, thereby identifying two main ionization paths which the three electrons in the ground state of lithium follow to escape to the continuum. The dominant escape paths manifest themselves in a characteristic ``T-shape'' break-up pattern of the three electrons which implies observable structures in the electronic angular correlation probability. This break-up pattern prevails for excess energies so low that the Wannier threshold law $σ\propto E^α$ describes already the triple ionization cross section, whose predicted value $α=2.16$ we can confirm quantitatively.
description: 14 pages, 7 figures
Optical Studies of Isolated Neutron Stars and Their Environments
Creators: name: Mignani, Roberto P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The results of optical studies of Isolated Neutron Stars (INSs), their Pulsar-Wind Nebulae (PWNe) and Pulsar Bow Shocks are reviewed and discussed.
description: 4 pages
Self-organization of atoms in a cavity field: threshold, bistability and scaling laws
Creators: name: Asboth, J. K.
name: Domokos, P.
name: Ritsch, H.
name: Vukics, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a detailed study of the spatial self-organization of laser-driven atoms in an optical cavity, an effect predicted on the basis of numerical simulations [P. Domokos and H. Ritsch, Phys. Rev. Lett. 89, 253003 (2002)] and observed experimentally [A. T. Black et al., Phys. Rev. Lett. 91, 203001 (2003)]. Above a threshold in the driving laser intensity, from a uniform distribution the atoms evolve into one of two stable patterns that produce superradiant scattering into the cavity. We derive analytic formulas for the threshold and critical exponent of this phase transition from a mean-field approach. Numerical simulations of the microscopic dynamics reveal that, on laboratory timescale, a hysteresis masks the mean-field behaviour. Simple physical arguments explain this phenomenon and provide analytical expressions for the observable threshold. Above a certain density of the atoms a limited number of ``defects'' appear in the organized phase, and influence the statistical properties of the system. The scaling of the cavity cooling mechanism and the phase space density with the atom number is also studied.
description: submitted to PRA
Heterotic non-linear sigma models with anti-de Sitter target spaces
Creators: name: Michalogiorgakis, Georgios
name: Gubser, Steven S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate the beta function of non-linear sigma models with S^{D+1} and AdS_{D+1} target spaces in a 1/D expansion up to order 1/D^2 and to all orders in α'. This beta function encodes partial information about the spacetime effective action for the heterotic string to all orders in α'. We argue that a zero of the beta function, corresponding to a worldsheet CFT with AdS_{D+1} target space, arises from competition between the one-loop and higher-loop terms, similarly to the bosonic and supersymmetric cases studied previously in hep-th/0512355. Various critical exponents of the non-linear sigma model are calculated, and checks of the calculation are presented.
description: 36 pages, 7 figures
Aggregation of voltage and frequency dependent electrical loads
Creators: name: Louie, Kwok Wai
Publisher: name: University of British Columbia
Year: 2009

description: Electrical loads play a very important role in the behaviour of an electric power system. Since there is a tremendous number of different loads in the system, representing each load with its own model becomes impractical for system level studies. This thesis deals with the issue of aggregating loads to simplify system level studies. Six new and accurate aggregate static load models, a novel EMTP based load model, and four very accurate aggregate induction machine models have been developed. The proposed aggregate load models are voltage and frequency dependent and accommodate the different data formats of individual loads. By including the information of voltage and frequency dependence, the models can be used in larger ranges of studies than the conventional aggregate static load models, thus resulting in more accurate representations. The valid voltage range of the models is about 75% to 125% of rated voltage and, the valid range of frequency of the models is about 85% to 115% of rated frequency. The proposed EMTP load model represents a load with basic circuit elements. The model consists of two varied turns ratio transformers and two varied admittance RLC circuits. It represents the voltage dependence and the frequency dependence of a load separately, resulting in a much simpler load representation than a conventional load model. The model not only improves the accuracy of load representations, bus also broadens the EMTP application in studies other than the transient analyses, such as power flow studies. The proposed aggregate induction machine models have been developed based on the specifications and circuit parameters of individual machines. Since the specification of the machines are the most basic information of the devices, they provide a natural and accurate representation of the machines. The circuit parameters of the machines reflect the behaviour of the devices, they can be used to compose the machines under high and low frequencies, resulting in a simple and accurate machine representation. These two different aggregate models accommodate the data availability of individual machines. To verify the validity of the proposed load models, field tests from published literature are compared with computer simulations. The simulation results of some test systems obtained i) by the proposed load models, ii) by the conventional load models, and iii) by solving the original systems without aggregating their circuit components are also compared. The results of these comparisons prove that the proposed load models can represent loads in power systems more accurately than the existing load models. The proposed load models have been developed into computer software packages with the high level computer programming language Ada 95.
Text: Story of the Kuankuan
Creators: name: Criollo Jr., Jorge
name: Dabkowski, Maksymilian
name: Quenamá, Leidy
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: con

description: A man used to go hunting, but he would always come back with nothing. His wife and family told him that he couldn't hunt anything, so he left the house annoyed and followed the tracks of white-lipped peccaries. Finally, he arrived at the house of the Kuankuan, stayed there, and when he was about to come back, the Kuankuan gave him the peccary perfume so that he would be able to hunt them.
Hamiltonicity of Token Graphs of some Join Graphs
Creators: name: Adame, Luis Enrique
name: Rivera, Luis Manuel
name: Trujillo-Negrete, Ana Laura
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C45, 05C76

description: Let $G$ be a simple graph of order $n$ and let $k$ be an integer such that $1\leq k\leq n-1$. The $k$-token graph $G^{\{k\}}$ of $G$ is the graph whose vertices are the $k$-subsets of $V(G)$, where two vertices are adjacent in $G^{\{k\}}$ whenever their symmetric difference is a pair of adjacent vertices in $G$. In this paper we study the Hamiltonicity of the $k$-token graphs of some join graphs. As a consequence, we provide an infinite family of graphs (containing Hamiltonian and non-Hamiltonian graphs) for which their $k$-token graphs are Hamiltonian. Our result provides, to our knowledge, the first family of non-Hamiltonian graphs for which their $k$-token graphs are Hamiltonian, for $2
description: The results presented in this article generalize some results presented in arXiv:2007.00115. V2 is a revised version and some mistakes in our proofs were corrected
The intriguing giant bow shocks near HH 131
Creators: name: wang, Min
name: Noumaru, Junichi
name: Wang, Hongchi
name: Yang, Ji
name: Chen, Jiansheng
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using the High Dispersion Spectrograph at the Subaru Telescope, echelle spectra of two giant arcs, i.e. nebulosities Cw and L associated with HH 131 in Orion are presented. Typical emission lines of Herbig-Haro objects have been detected towards Cw. With the 2.16 m telescope of National Astronomical Observatories, spectra of Nebu. C, L and K are obtained, which also show strong [SII]6717/6731, H$α$ and [NII]6583 emission lines. Position-velocity distributions of Cw and L are analyzed. The fastest radial velocity of Cw is V_r ~ -18.0 km/s. When the flow at L goes to the south, it slows down. The fastest radial velocity of L has been observed of -45.0 km/s and the slowest value is about -18.3 km/s. The similarity of the velocities and their positional connection indicate that Cw and L are physically associated. The entire flow tends to become less excited and less ionized when going further to the south (i.e., from Nebu. K, L to C). The electron densities of all the observed nebulosities are low (n_e ~ 10^2 cm^-3). Double kinematic signatures have been found in Cw from its [NII]6583 profiles while the observed H$α$ profiles of Cw are almost symmetric. Bow shock models appear to agree with the observed position-velocity diagrams of the [NII spectra better than H$α$ spectra. With the suggestion that these arcs are HH shocks possibly ejected out of the Orion A molecular cloud by an uncertain source, their spectra show low to intermediate excitation from their diagnostic line ratios.
description: 27 pages, 10 figures, accepted for publiscation in AJ
A negative dielectric constant in nano-particle materials under an electric field at very low frequencies
Creators: name: Chu, C. W.
name: Chen, F.
name: Shulman, J.
name: Tsui, S.
name: Xue, Y. Y.
name: Wen, W.
name: Sheng, P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The significance of a negative dielectric constant has long been recognized. We report here the observation of a field-induced large negative dielectric constant of aggregates of oxide nano-particles at frequencies below ~ 1 Hz at room temperature. The accompanying induced charge detected opposes the electric field applied in the field-induced negative dielectric constant state. A possible collective effect in the nano-particle aggregates is proposed to account for the observations. Materials with a negative dielectric constant are expected to provide an attraction between similar charges and unusual scattering to electromagnetic waves with possible profound implications for high temperature superconductivity and communications.
First excited band of a spinor Bose-Einstein condensate
Creators: name: Bao, C. G.
name: Li, Z. B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The analytical expression of the fractional parentage coefficients for the total spin-states of a spinor N-boson system has been derived. Thereby an S-conserved theory for the spinor Bose-Einstein condensation has been proposed. A set of equations has been established to describe the first excited band of the condensates. Numerical solution for $^{23}$Na has been given as an example.
description: 6 pages, 3 figures
Exploring the relativistic regime with Newtonian hydrodynamics: An improved effective gravitational potential for supernova simulations
Creators: name: Marek, A.
name: Dimmelmeier, H.
name: Janka, H. -Th.
name: Mueller, E.
name: Buras, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the possibility to approximate relativistic effects in hydrodynamical simulations of stellar core collapse and post-bounce evolution by using a modified gravitational potential in an otherwise standard Newtonian hydrodynamic code. Different modifications of the effective relativistic potential introduced by Rampp & Janka (2002) are discussed. Corresponding hydrostatic solutions are compared with solutions of the TOV equations, and hydrodynamic simulations with two different codes are compared with fully relativistic results. One code is applied for one- and two-dimensional calculations with a simple equation of state, and employs either the modified effective relativistic potential in a Newtonian framework or solves the general relativistic field equations under the assumption of the conformal flatness condition (CFC) for the three-metric. The second code allows for full-scale supernova runs including a microphysical equation of state and neutrino transport based on the solution of the Boltzmann equation and its moments equations. We present prescriptions for the effective relativistic potential for self-gravitating fluids to be used in Newtonian codes, which produce excellent agreement with fully relativistic solutions in spherical symmetry, leading to significant improvements compared to previously published approximations. Moreover, they also approximate qualitatively well relativistic solutions for models with rotation.
description: 20 pages, 13 figures; corrected minor inaccuracies and added two subsections
Physical properties of the ambient medium and of dense cores in the Perseus star-forming region derived from Herschel Gould Belt Survey observations
Creators: name: Pezzuto, S.
name: Benedettini, M.
name: Di Francesco, J.
name: Palmeirim, P.
name: Sadavoy, S.
name: Schisano, E.
name: Causi, G. Li
name: André, Ph.
name: Arzoumanian, D.
name: Bernard, J. -Ph.
name: Bontemps, S.
name: Elia, D.
name: Fiorellino, E.
name: Kirk, J. M.
name: Könyves, V.
name: Ladjelate, B.
name: Menshchikov, A.
name: Motte, F.
name: Piccotti, L.
name: Schneider, N.
name: Spinoglio, L.
name: Ward-Thompson, D.
name: Wilson, C. D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: (Abridged) In this paper, we present analyses of images taken with the Herschel ESA satellite from 70mu to 500mu. We first constructed column density and dust temperature maps. Next, we identified compact cores in the maps, and characterize the cores using modified blackbody fits to their SEDs: we identified 684 starless cores, of which 199 are bound and potential prestellar cores, and 132 protostars. We also matched the Herschel-identified young stars with GAIA sources to model distance variations across the Perseus cloud. We measure a linear gradient function with right ascension and declination for the entire cloud. From the SED fits, mass and temperature of cores were derived. The core mass function can be modelled with a log-normal distribution that peaks at 0.82~$M_\sun$ suggesting a star formation efficiency of 0.30. The high-mass tail can be modelled with a power law of slope $\sim-2.32$, close to the Salpeter's value. We also identify the filamentary structure of Perseus, confirming that stars form preferentially in filaments. We find that the majority of filaments where star formation is ongoing are transcritical against their own internal gravity because their linear masses are below the critical limit of 16~$M_\sun$pc$^{-1}$ above which we expect filaments to collapse. We find a possible explanation for this result, showing that a filament with a linear mass as low as 8~$M_\sun$pc$^{-1}$ can be already unstable. We confirm a linear relation between star formation efficiency and slope of dust probability density function and a similar relation is also seen with the core formation efficiency. We derive a lifetime for the prestellar core phase of $1.69\pm0.52$~Myr for Perseus but different regions have a wide range in prestellar core fractions, hint that star-formation has started only recently in some clumps. We also derive a free-fall time for prestellar cores of 0.16~Myr.
description: Comparison with Zari et al's (2016) work improved once Eleonora Zari told us that, contrarily to what we wrote, their data are publicly available (this was not written in the first version of their paper put on arxiv, then our misunderstaning). The modification is small, a paragraph on page 11, and does not have any impact on the content of the paper. Modification allowed by A&A editor
Bethe-Sommerfeld Conjecture
Creators: name: Parnovski, Leonid
Publisher: name: arXiv
Year: 2008
Subjects: subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 35P20

description: We consider Schroedinger operator $-Δ+V$ in $R^d$ ($d\ge 2$) with smooth periodic potential $V$ and prove that there are only finitely many gaps in its spectrum.
description: 59 pages, 10 figures; to appear in Annales Henri Poincare
Circular orbits and spin in black-hole initial data
Creators: name: Caudill, Matthew
name: Cook, Gregory B.
name: Grigsby, Jason D.
name: Pfeiffer, Harald P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The construction of initial data for black-hole binaries usually involves the choice of free parameters that define the spins of the black holes and essentially the eccentricity of the orbit. Such parameters must be chosen carefully to yield initial data with the desired physical properties. In this paper, we examine these choices in detail for the quasiequilibrium method coupled to apparent-horizon/quasiequilibrium boundary conditions. First, we compare two independent criteria for choosing the orbital frequency, the "Komar-mass condition" and the "effective-potential method," and find excellent agreement. Second, we implement quasi-local measures of the spin of the individual holes, calibrate these with corotating binaries, and revisit the construction of non-spinning black hole binaries. Higher-order effects, beyond those considered in earlier work, turn out to be important. Without those, supposedly non-spinning black holes have appreciable quasi-local spin; furthermore, the Komar-mass condition and effective potential method agree only when these higher-order effects are taken into account. We compute a new sequence of quasi-circular orbits for non-spinning black-hole binaries, and determine the innermost stable circular orbit of this sequence.
description: 24 pages, 17 figures, accepted for publication in Physical Review D, revtex4; Fixed error in computing proper separation and updated figures and tables accordingly, added reference to Sec. IV.A, fixed minor error in Sec. IV.B, added new data to Tables IV and V, fixed 1 reference, fixed error in Eq. (A7b), included minor changes from PRD editing
Exploring Topology Conserving Gauge Actions for Lattice QCD
Creators: name: Bietenholz, W.
name: Jansen, K.
name: Nagai, K. -I.
name: Necco, S.
name: Scorzato, L.
name: Shcheredin, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We explore gauge actions for lattice QCD, which are constructed such that the occurrence of small plaquette values is strongly suppressed. By choosing strong bare gauge couplings we arrive at values for the physical lattice spacings of O(0.1 fm). Such gauge actions tend to confine the Monte Carlo history to a single topological sector. This topological stability facilitates the collection of a large set of configurations in a specific sector, which is profitable for numerical studies in the epsilon-regime. The suppression of small plaquette values is also expected to be favourable for simulations with dynamical quarks. We use a local Hybrid Monte Carlo algorithm to simulate such actions, and we present numerical results for the static potential, the physical scale, the topological stability and the kernel condition number of the overlap Dirac operator. In addition we discuss the question of reflection positivity for a class of such gauge actions.
description: 28 pages, 8 figures
New Atomic Model
Creators: name: Kim, Min Tae
Publisher: name: figshare
Year: 2021
Subjects: Atomic Physics

description: Instead of the old atomic models, in which electrons are orbiting the nucleus, a new atomic model is proposed, in which the electron and proton are not separated in the atom but exist in the form of protium, called the plecton. A neutron combined with a plecton plays a role to be the elementary building block of the atom. In the new atomic model, the plecton and neutron in the atom are in dynamic equilibrium and exchange their forms and energy constantly. The building block piles up spherically and makes a collection of 4He units to be stable elements. The maximum plecton number (or the number of plecton-neutron pairs) in the outmost shell of an inert atom increases with the square of the reduced atomic radius. This new atomic model gives a perfect match with the current periodic table of elements and the specific quantum number of each constituent plecton (formerly electron) in the atom.
Speed-direction description of turbulent flows
Creators: name: Olshanskii, Maxim A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this note we introduce speed and direction variables to describe the motion of incompressible viscous flows. Fluid velocity ${\bf u}$ is decomposed into ${\bf u}=u{\bf r}$, with $u=|{\bf u}|$ and ${\bf r}={\bf u}/|{\bf u}|$. We consider a directional split of the Navier-Stokes equations into a coupled system of equations for $u$ and for ${\bf r}$. Equation for $u$ is particularly simple but solely maintains the energy balance of the system. Under the assumption of a weak correlation between fluctuations in speed and direction in a developed turbulent flow, we further illustrate the application of $u$-${\bf r}$ variables to describe mean statistics of a shear turbulence. The standard (full) Reynolds stress tensor does not appear in a resulting equation for the mean flow profile.
Two-Party Bell Inequalities Derived from Combinatorics via Triangular Elimination
Creators: name: Avis, David
name: Imai, Hiroshi
name: Ito, Tsuyoshi
name: Sasaki, Yuuya
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We establish a relation between the two-party Bell inequalities for two-valued measurements and a high-dimensional convex polytope called the cut polytope in polyhedral combinatorics. Using this relation, we propose a method, triangular elimination, to derive tight Bell inequalities from facets of the cut polytope. This method gives two hundred million inequivalent tight Bell inequalities from currently known results on the cut polytope. In addition, this method gives general formulas which represent families of infinitely many Bell inequalities. These results can be used to examine general properties of Bell inequalities.
description: Part of results in Section 2 appeared in quant-ph/0404014, but this paper gives new proofs using only elementary mathematics. The results in Section 3 was presented in EQIS'04, Kyoto, Sept. 2004. 20 pages with 2 figures. Submitted to Journal of Physics A. v2: introduction rewritten, typos corrected, some detail of proof of Th 2.1 added, relation to open problems mentioned in concluding remarks. v3: URL of the page containing list of Bell inequalities and program to produce it added, typos corrected
Text: Story of Erision
Creators: name: Criollo Jr., Jorge
name: Dabkowski, Maksymilian
name: Quenamá, Leidy
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: con

description: The Tetete kidnapped a child and raised him. They taught him all of their abilities, and the child grew up. They returned to the village to kill all of his family, but the child was Cofán, so he joined his people and they killed all of the Tetete.
Fragmentation in the Public Administration for Climate Change Mitigation: A Major Institutional Constraint for Energy Policy in the Transportation Sector of Thailand
Creators: name: Ratchaphong Klinsrisuk
name: Vilas Nitivattananon
name: Winai Wongsurawat
name: Sajor, Edsel
Publisher: name: Thai Society of Higher Education Institutes on Environment
Year: 2013
Subjects: public administration fragmentation,energy,transportation,CO2 mitigation

description: 2, 6, EnvironmentAsia
Unveiling the nature of INTEGRAL objects through optical spectroscopy. II. The nature of four unidentified sources
Creators: name: Masetti, N.
name: Mason, E.
name: Bassani, L.
name: Bird, A. J.
name: Maiorano, E.
name: Malizia, A.
name: Palazzi, E.
name: Stephen, J. B.
name: Bazzano, A.
name: Dean, A. J.
name: Ubertini, P.
name: Walter, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of our optical spectrophotometric campaign ongoing at the Astronomical Observatory of Bologna in Loiano (Italy) on hard X-ray sources detected by INTEGRAL. We observed spectroscopically the putative optical counterparts of four more INTEGRAL sources, IGR J12391-1610, IGR J18406-0539, 2E 1853.7+1534 and IGR J19473+4452. These data have allowed us to determine their nature, finding that IGR J12391-1610 (=LEDA 170194) and IGR J19473+4452 are Seyfert 2 galaxies at redshifts z = 0.036 and z = 0.053, respectively, IGR J18406-0539 (=SS 406) is a Be massive X-ray binary located at about 1.1 kpc from Earth, and 2E 1853.7+1534 is a Type 1 Seyfert galaxy with z = 0.084. Physical parameters for these objects are also evaluated by collecting and discussing the available multiwavelength information. The determination of the extragalactic nature of a substantial fraction of sources inside the INTEGRAL surveys underlines the importance of hard X-ray observations for the study of background Active Galactic Nuclei located beyond the `Zone of Avoidance' of the Galactic Plane.
description: 10 pages, 2 figures, 2 tables, accepted for publication on A&A, main journal. The quality of Fig. 1 was degraded to fit the arXiv uploads size limits
Projection Mapping Implementation: Enabling Direct Externalization of Perception Results and Action Intent to Improve Robot Explainability
Creators: name: Han, Zhao
name: Wilkinson, Alexander
name: Parrillo, Jenna
name: Allspaw, Jordan
name: Yanco, Holly A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Existing research on non-verbal cues, e.g., eye gaze or arm movement, may not accurately present a robot's internal states such as perception results and action intent. Projecting the states directly onto a robot's operating environment has the advantages of being direct, accurate, and more salient, eliminating mental inference about the robot's intention. However, there is a lack of tools for projection mapping in robotics, compared to established motion planning libraries (e.g., MoveIt). In this paper, we detail the implementation of projection mapping to enable researchers and practitioners to push the boundaries for better interaction between robots and humans. We also provide practical documentation and code for a sample manipulation projection mapping on GitHub: https://github.com/uml-robotics/projection_mapping.
description: 5 pagers, 4 figures, the AI-HRI Symposium at AAAI-FSS 2020 (Proceedings: arXiv:2010.13830)
Orientational correlations and the effect of spatial gradients in the equilibrium steady state of hard rods in 2D : A study using deposition-evaporation kinetics
Creators: name: Khandkar, Mahendra D.
name: Barma, Mustansir
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Deposition and evaporation of infinitely thin hard rods (needles) is studied in two dimensions using Monte Carlo simulations. The ratio of deposition to evaporation rates controls the equilibrium density of rods, and increasing it leads to an entropy-driven transition to a nematic phase in which both static and dynamical orientational correlation functions decay as power laws, with exponents varying continuously with deposition-evaporation rate ratio. Our results for the onset of the power-law phase agree with those for a conserved number of rods. At a coarse-grained level, the dynamics of the non-conserved angle field is described by the Edwards-Wilkinson equation. Predicted relations between the exponents of the quadrupolar and octupolar correlation functions are borne out by our numerical results. We explore the effects of spatial inhomogeneity in the deposition-evaporation ratio by simulations, entropy-based arguments and a study of the new terms introduced in the free energy. The primary effect is that needles tend to align along the local spatial gradient of the ratio. A uniform gradient thus induces a uniformly aligned state, as does a gradient which varies randomly in magnitude and sign, but acts only in one direction. Random variations of deposition-evaporation rates in both directions induce frustration, resulting in a state with glassy characteristics.
description: modified version, Accepted for publication in Physical Review E
Anti-diabetic and anti-urease inhibition potential of Amomum dealbatum Roxb. seeds through a bioassay-guided approach
Creators: name: Sonia, Hage
name: Chelleng, Nilamoni
name: Afzal, Nazim Uddin
name: Manna, Prasenjit
name: Puzari, Minakshi
name: Chetia, Pankaj
name: Tamuly, Chandan
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified

description: Using HPLC-PDA and HRMS analysis, five compounds p-coumaric acid, sinapic acid, quercetin, trans-ferulic and gallic acid were identified in seeds of Amomum dealbatum Roxb. The GC-MS analysis identified 1-dodecanol, phenol, 3,5-bis(1,1-dimethylethyl), Oleic Acid and 1-Heptacosanol which possess anti-diabetic properpties. A bioassay-guided technique was used to determine the degree of inhibition that A. dealbatum seeds crude methanol extract and its most active sub-fraction had against the α-glucosidase and Helicobacter pylori urease enzymes. In the Rat L6 myoblast cell line, glucose absorption through the GLUT4 transporter of most active subfraction (EASF80) was examined. According to a molecular docking investigation, these compounds strongly interacted with the GLUT4 transporter, H pylori and α-glucosidase enzyme. Sinapic acid interacted most strongly with the H. pylori urease enzyme while gallic acid interacted with both the α-glucosidase enzyme and the GLUT4 transporter. Additionally, a molecular docking simulation study was carried out to recognise the stability of the complexes.
Growth and structure of multiphase gas in the cloud-crushing problem with cooling
Creators: name: Kanjilal, Vijit
name: Dutta, Alankar
name: Sharma, Prateek
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We revisit the problem of the growth of dense/cold gas in the cloud-crushing setup with radiative cooling. The relative motion between the dense cloud and the diffuse medium produces a turbulent boundary layer of mixed gas with a short cooling time. This mixed gas may explain the ubiquity of the range of absorption/emission lines observed in various sources such as the circumgalactic medium and galactic/stellar/AGN outflows. Recently Gronke & Oh showed that the efficient radiative cooling of the mixed gas can lead to the continuous growth of the dense cloud. They presented a threshold cloud size for the growth of dense gas which was contradicted by the more recent works of Li et al. & Sparre et al. These thresholds are qualitatively different as the former is based on the cooling time of the mixed gas whereas the latter is based on the cooling time of the hot gas. Our simulations agree with the threshold based on the cooling time of the mixed gas. We argue that the radiative cloud-crushing simulations should be run long enough to allow for the late-time growth of the dense gas due to cooling of the mixed gas but not so long that the background gas cools catastrophically. Moreover, the simulation domain should be large enough that the mixed gas is not lost through the boundaries. While the mixing layer is roughly isobaric, the emissivity of the gas at different temperatures is fundamentally different from an isobaric single-phase steady cooling flow.
description: 17 pages, 14 figures; Submitted to MNRAS; Comments are welcome; Supplementary content: https://github.com/dutta-alankar/cloud-crushing-with-cooling; Movies and associated videos: https://www.youtube.com/watch?v=TO68aRBFO5I&list=PLH4Yu6hxblq3scjLE7U7EvTQtebIpn_TA
Child Processing of VP Ellipsis Constructions (Callahan et al., 2012)
Creators: name: Callahan, Sarah M.
name: Walenski, Matthew
name: Love, Tracy
Publisher: name: ASHA journals
Year: 2021
Subjects: subject: 170204 Linguistic Processes (incl. Speech Production and Comprehension)
subject: FOS: Psychology
subject: Language

description: Purpose: To examine children’s comprehension of verb phrase (VP) ellipsis constructions in light of their automatic, online structural processing abilities and conscious, metalinguistic reflective skill.Method: Forty-two children ages 5 through 12 years listened to VP ellipsis constructions involving the strict/sloppy ambiguity (e.g., “The janitor untangled himself from the rope and the fireman in the elementary school did too after the accident.”) in which the ellipsis phrase (“did too”) had 2 interpretations: (a) strict (“untangled the janitor”) and (b) sloppy (“untangled the fireman”). We examined these sentences at a normal speech rate with an online cross-modal picture priming task (n = 14) and an offline sentence–picture matching task (n = 11). Both tasks were also given with slowed speech input (n = 17).Results: Children showed priming for both the strict and sloppy interpretations at a normal speech rate but only for the strict interpretation with slowed input. Offline, children displayed an adultlike preference for the sloppy interpretation with normal-rate input but a divergent pattern with slowed speech.Conclusions: Our results suggest that children and adults rely on a hybrid syntax-discourse model for the online comprehension and offline interpretation of VP ellipsis constructions. This model incorporates a temporally sensitive syntactic process of VP reconstruction (disrupted with slow input) and a temporally protracted discourse effect attributed to parallelism (preserved with slow input).
N-Fold Integer Programming
Creators: name: De Loera, Jesús A.
name: Hemmecke, Raymond
name: Onn, Shmuel
name: Weismantel, Robert
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optimization and Control (math.OC)
subject: Computational Complexity (cs.CC)
subject: Discrete Mathematics (cs.DM)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 05A; 15A; 51M; 52A; 52B; 52C; 68Q; 68R; 68U; 90B; 90C

description: In this article we study a broad class of integer programming problems in variable dimension. We show that these so-termed {\em n-fold integer programming problems} are polynomial time solvable. Our proof involves two heavy ingredients discovered recently: the equivalence of linear optimization and so-called directed augmentation, and the stabilization of certain Graver bases. We discuss several applications of our algorithm to multiway transportation problems and to packing problems. One important consequence of our results is a polynomial time algorithm for the $d$-dimensional integer transportation problem for long multiway tables. Another interesting application is a new algorithm for the classical cutting stock problem.
Auction-based Resource Allocation for Multi-relay Asynchronous Cooperative Networks
Creators: name: Huang, Jianwei
name: Han, Zhu
name: Chiang, Mung
name: Poor, H. Vincent
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Resource allocation is considered for cooperative transmissions in multiple-relay wireless networks. Two auction mechanisms, SNR auctions and power auctions, are proposed to distributively coordinate the allocation of power among multiple relays. In the SNR auction, a user chooses the relay with the lowest weighted price. In the power auction, a user may choose to use multiple relays simultaneously, depending on the network topology and the relays' prices. Sufficient conditions for the existence (in both auctions) and uniqueness (in the SNR auction) of the Nash equilibrium are given. The fairness of the SNR auction and efficiency of the power auction are further discussed. It is also proven that users can achieve the unique Nash equilibrium distributively via best response updates in a completely asynchronous manner.
description: To appear in the Proceedings of the 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, Las Vegas, NV, March 30 to April 4, 2008
Multiwavelength Radio Observations of Two Repeating Fast Radio Burst Sources: FRB 121102 and FRB 180916.J0158+65
Creators: name: Pearlman, Aaron B.
name: Majid, Walid A.
name: Prince, Thomas A.
name: Nimmo, Kenzie
name: Hessels, Jason W. T.
name: Naudet, Charles J.
name: Kocz, Jonathon
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The spectra of fast radio bursts (FRBs) encode valuable information about the source's local environment, underlying emission mechanism(s), and the intervening media along the line of sight. We present results from a long-term multiwavelength radio monitoring campaign of two repeating FRB sources, FRB 121102 and FRB 180916.J0158+65, with the NASA Deep Space Network (DSN) 70-m radio telescopes (DSS-63 and DSS-14). The observations of FRB 121102 were performed simultaneously at 2.3 and 8.4 GHz, and spanned a total of 27.3 hr between 2019 September 19 and 2020 February 11. We detected 2 radio bursts in the 2.3 GHz frequency band from FRB 121102, but no evidence of radio emission was found at 8.4 GHz during any of our observations. We observed FRB 180916.J0158+65 simultaneously at 2.3 and 8.4 GHz, and also separately in the 1.5 GHz frequency band, for a total of 101.8 hr between 2019 September 19 and 2020 May 14. Our observations of FRB 180916.J0158+65 spanned multiple activity cycles during which the source was known to be active and covered a wide range of activity phases. Several of our observations occurred during times when bursts were detected from the source between 400-800 MHz with the Canadian Hydrogen Intensity Mapping Experiment (CHIME) radio telescope. However, no radio bursts were detected from FRB 180916.J0158+65 at any of the frequencies used during our observations with the DSN radio telescopes. We find that FRB 180916.J0158+65's apparent activity is strongly frequency-dependent due to the narrowband nature of its radio bursts, which have less spectral occupancy at high radio frequencies ($\gtrsim$ 2 GHz). We also find that fewer or fainter bursts are emitted from the source at high radio frequencies. We discuss the implications of these results on possible progenitor models of repeating FRBs.
description: 17 pages, 3 figures, 5 tables, Accepted for publication in ApJL on 2020 November 12
Radar Reflectivity Derived Rain-storm Characteristics over Northern Thailand
Creators: name: Pakdee Chantraket
name: Chanti Detyothin
name: Anuchit Suknarin
Publisher: name: Thai Society of Higher Education Institutes on Environment
Year: 2013
Subjects: Northern Thailand,TITAN,rain-storm,thunderstorms,weather radar,radar reflectivity,sounding data

description: 2, 6, EnvironmentAsia
Moral injury and mental health among health-care workers during the COVID-19 pandemic: meta-analysis
Creators: name: Coimbra, Bruno Messina
name: Zylberstajn, Cecilia
name: van Zuiden, Mirjam
name: Hoeboer, Chris Maria
name: Mello, Andrea Feijo
name: Mello, Marcelo Feijo
name: Olff, Miranda
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy
subject: Mental Health

description: Background: During the COVID-19 pandemic, health-care workers (HCWs) may have been confronted with situations that may culminate in moral injury (MI). MI is the psychological distress that may result from perpetrating or witnessing actions that violate one’s moral codes. Literature suggests that MI can be associated with mental health problems. Objective: We aimed to meta-analytically review the literature to investigate whether MI is associated with symptoms of posttraumatic stress disorder (PTSD), anxiety, depression, burnout, and suicidal ideation among active HCWs during the COVID-19 pandemic. Method: We searched eight databases for studies conducted after the onset of the COVID-19 pandemic up to 18 July 2023, and performed random-effects meta-analyses to examine the relationship between MI and various mental health outcomes. Results: We retrieved 33 studies from 13 countries, representing 31,849 individuals, and pooled 79 effect sizes. We found a positive association between MI and all investigated mental health problems (rs = .30–.41, all ps < .0001). Between-studies heterogeneity was significant. A higher percentage of nurses in the samples was associated with a stronger relationship between MI and depressive and anxiety symptoms. Samples with a higher percentage of HCWs providing direct care to patients with COVID-19 exhibited a smaller effect between MI and depressive and anxiety symptoms. We observed a stronger effect between MI and PTSD symptoms in US samples compared to non-US samples. Conclusion: We found that higher MI is moderately associated with symptoms of PTSD, anxiety, depression, burnout, and suicidal ideation among HCWs during the COVID-19 pandemic. Our findings carry limitations due to the array of MI scales employed, several of which were not specifically designed for HCWs, but underscore the need to mitigate the effect of potentially morally injurious events on the mental health of HCWs. We conducted the first meta-analysis of moral injury and mental health among healthcare workers.Moral injury is moderately associated with symptoms of PTSD, depression, anxiety, burnout, and suicidal ideation.There was a stronger association between MI and anxiety and depressive symptoms for samples with more nurses. We conducted the first meta-analysis of moral injury and mental health among healthcare workers. Moral injury is moderately associated with symptoms of PTSD, depression, anxiety, burnout, and suicidal ideation. There was a stronger association between MI and anxiety and depressive symptoms for samples with more nurses.