cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Meta-analysis from different tracers of the small Local Arm around the Sun - extent, shape, pitch, origin
Creators: name: Vallee, Jacques P
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Sun in not located in a major spiral arm, and sits in a small Local Arm (variously called arm, armlet, blob, branch, bridge, feather, finger, segment, spur, sub-arm, swath, etc). The diversity of names for the Local Arm near the Sun indicates an uncertainty about its shape or pitch or its extent from the Sun in each galactic quadrant, as well as an uncertainty about its origin. Here we extract data about the small Local Arm near the Sun, from the recent observational literature, over many arm tracers, and we use statistics in order to find the its mean extent from the Sun, its possible shape and pitch angle from the direction of galactic longitude 90 degrees. Employing all tracers, the Local Arm is about 4 kpc long by 2 kpc large. The Sun is within 1 kpc of the center of the local arm. Proposed bridges and fingers are assessed. These bridges to nearby spiral arms and fingers across spiral arms may not reach the nearest spiral arms, owing to kinematic and photometric distance effects. We then compare these statistical results with some predictions from recent models proposed to explain the local arm (perturbations, resonances, density wave, halo supercloud, debris trail from a dwarf galaxy). The least controversial models involve importing materials from elsewhere (halo supercloud, debris trail) as a first step, and to be later deformed in a second step (by the Galactic differential rotation into become roughly parallel to spiral arms) and then subjected to ongoing forces (global density waves, local perturbations).
description: 18 pages, 3 tables, 3 figures; accepted for publication
Ferromagnetism in multi--band Hubbard models: From weak to strong Coulomb repulsion
Creators: name: Penc, Karlo
name: Shiba, Hiroyuki
name: Mila, Frédéric
name: Tsukagoshi, Takuya
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We propose a new mechanism which can lead to ferromagnetism in Hubbard models containing triangles with different on-site energies. It is based on an effective Hamiltonian that we derive in the strong coupling limit. Considering a one-dimensional realization of the model, we show that in the quarter-filled, insulating case the ground-state is actually ferromagnetic in a very large parameter range going from Tasaki's flat-band limit to the strong coupling limit of the effective Hamiltonian. This result has been obtained using a variety of analytical and numerical techniques. Finally, the same results are shown to apply away from quarter-filling, in the metallic case.
description: 12 pages, revtex, 12 figures,needs epsf and multicol style files
Stueckelberg Bosons as an Ultralight Dark Matter Candidate
Creators: name: Govindarajan, T. R.
name: Kalyanapuram, Nikhil
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this letter, we propose a new model of fuzzy dark matter based on Stueckelberg theory. Dark matter is treated as a Bose-Einstein condensate of Stueckelberg particles and the resulting cosmological effects are analyzed. Fits are understood for the density and halo sizes of such particles and comparison with existing models is made. Certain attractive properties of the model are demonstrated and lines for future work are laid out.
description: 11 pages, 4 figures, changes in presentation, additional references
Flavor independence and the dual superconducting model of QCD
Creators: name: Fulcher, Lewis P.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Baker, Ball and Zachariasen have developed an elegant formulation of the dual superconducting model of quantum chromodynamics (QCD), which allows one to use the field equations to eliminate the gluon and Higgs degrees of freedom and thus to express the interaction between quarks as an effective potential. Carrying out an expansion in inverse powers of the constituent quark masses, these authors succeeded in identifying the central part, the spin-dependent part and the leading relativistic corrections to the central potential. The potential offers a good account of the energies and splittings of charmonium and the upsilon system. Since all of the flavor dependence of the interaction is presumed to enter through the constituent masses, it is possible to test the potential in other systems. Logical candidates are the heavy B-flavor charmed system and the heavy-light systems, which should be more sensitive to the relativistic corrections. Lattice gauge calculations furnish an additional point of contact for the components of the BBZ potential. Some preliminary calculations of the energies of B and D mesons are presented and the challenge of agreement with experiment is discussed. The spinless Salpeter equation is used to account for the effects of relativistic kinematics.
description: 9 pages LaTex file in the RevTex style with 4 postscript figures, submitted to Phys. Rev. D, includes additional calculations resulting from feedback by colleagues, conclusions stated more clearly
Explicit Solutions for a Nonlinear Vector Model on the Triangular Lattice
Creators: name: Vekslerchik, V. E.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 37J35, 11C20, 35C08, 15B05

description: We present a family of explicit solutions for a nonlinear classical vector model with anisotropic Heisenberg-like interaction on the triangular lattice.
Constraining the Black Hole Initial Mass Function with LIGO/VIRGO Observations
Creators: name: Perna, Rosalba
name: Wang, Yi-Han
name: Farr, Will M.
name: Leigh, Nathan
name: Cantiello, Matteo
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Prior to the detection of black holes (BHs) via the gravitational waves (GWs) they generate at merger, the presence of BHs was inferred in X-ray binaries, mostly via dynamical measurements, with masses in the range between $\sim 5-20~M_\odot$. The LIGO discovery of the first BHs via GWs was surprising in that the two BHs that merged had masses of $35.6^{+4.8}_{-3.0}$ and $30.6^{+3.0}_{-4.4}\,M_\odot$, which are both above the range inferred from X-ray binaries. With 20 BH detections from the O1/O2 runs, the distribution of masses remains generally higher than the X-ray inferred one, while the effective spins are generally lower, suggesting that, at least in part, the GW-detected population might be of dynamical origin rather than produced by the common evolution of field binaries. Here we perform high-resolution N-body simulations of a cluster of isolated BHs with a range of initial mass spectra and upper mass cut-offs, and study the resulting binary mass spectrum resulting from the dynamical interactions. Our clusters have properties similar to those of the massive remnants in an OB association $\sim 10 \, \mathrm{Myr}$ after formation. We perform a likelihood analysis for each of our dynamically-formed binary population against the data from the O1 and O2 LIGO/Virgo runs. We find that an initial mass spectrum $M_{\rm BH}\propto M^{-2.35}$ with an upper mass cutoff $M_{\rm max}\sim 50M_\odot$ is favored by the data, together with a slight preference for a merger rate that increases with redshift.
description: Accepted to ApJL. Major updates
Monte Carlo Simulations of Spin Glasses at Low Temperatures
Creators: name: Katzgraber, Helmut G.
name: Palassini, Matteo
name: Young, A. P.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We report the results of Monte Carlo simulations on several spin glass models at low temperatures. By using the parallel tempering (Exchange Monte Carlo) technique we are able to equilibrate down to low temperatures, for moderate sizes, and hence the data should not be affected by critical fluctuations. Our results for short range models are consistent with a picture proposed earlier that there are large scale excitations which cost only a finite energy in the thermodynamic limit, and these excitations have a surface whose fractal dimension is less than the space dimension. For the infinite range Viana-Bray model, our results obtained for a similar number of spins are consistent with standard replica symmetry breaking.
description: 12 pages, 21 postscript figures included. Replaced by published version
Berry Phase and Ground State Symmetry in H x h Dynamical Jahn-Teller Systems
Creators: name: Manini, Nicola
name: Rios, Paolo De Los
Publisher: name: arXiv
Year: 1999
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Due to the ubiquitous presence of a Berry phase, in most cases of dynamical Jahn-Teller systems the symmetry of the vibronic ground state is the same as that of the original degenerate electronic state. As a single exception, the linear H x h icosahedral model, relevant to the physics of C60 cations, is determined by an additional free parameter, which can be continuously tuned to eliminate the Berry phase from the low-energy closed paths: accordingly, the ground state changes to a totally-symmetric nondegenerate state.
description: RevTex, 4 pages, 3 figures
Study of 3-prong Hadronic $τ$ Decays with Charged Kaons
Creators: name: Richichi, S.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using a sample of 4.7/fb integrated luminosity accumulated with the CLEO-II detector at the Cornell Electron Storage Ring (CESR), we have measured the branching fractions of the tau lepton into $K^- h^+ π^- ν_τ$ and $K^- K^+ π^- ν_τ$ relative to $h^- h^+ h^- ν_τ; K^- h^+ π^- π^0ν_τ$ and $K^- K^+ π^- π^0ν_τ$ relative to $h^- h^+ h^- π^0 ν_τ$. The relative branching fractions are: (5.16+-0.20+-0.50)*$10^{-2}$, (1.52+-0.14+-0.29)*$10^{-2}$, (2.54+-0.44+-0.39)*$10^{-2}$ and $<0.0154$ at 95% C.L., respectively. Coupled with additional experimental information, we use our results to extract information on the structure of three-prong tau decays to charged kaons.
description: 16 pages postscript file also available through http://w4.lns.cornell.edu/public/CLNS
Sungai Melaka dan Pelan Pembangunan Sumber Air negeri: kajian kes persepsi warga tempatan
Creators: name: Hua, Ang Kean
Publisher: name: figshare
Year: 2019
Subjects: subject: Geography
subject: Education
subject: 130199 Education systems not elsewhere classified
subject: FOS: Educational sciences
subject: 140205 Environment and Resource Economics
subject: FOS: Economics and business
subject: 50205 Environmental Management
subject: FOS: Earth and related environmental sciences
subject: 50206 Environmental Monitoring
subject: Hydrology
subject: 40603 Hydrogeology
subject: 40301 Basin Analysis
subject: Environmental Humanities
subject: 220303 Environmental Philosophy
subject: FOS: Philosophy, ethics and religion
subject: 180111 Environmental and Natural Resources Law
subject: FOS: Law
subject: 220305 Ethical Theory

description: For Open Access, Please Visit https://www.articjou.com/2019/01/sungai-melaka-dan-pelan-pembangunan.html
Form factors approach to current correlations in one dimensional systems with impurities
Creators: name: Lesage, F.
name: Saleur, H.
name: Skorik, S.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show how to compute analytically time and space dependent correlations in one dimensional quantum integrable systems with an impurity. Our approach is based on a description of these systems in terms of massless scattering of quasiparticles. Correlators follow then from matrix elements of local operators between multiparticle states, the ``massless form factors''. Although an infinite sum of these form factors has to be considered in principle, we find that for current, spin, and energy operators, only a few (typically two or three) are necessary to obtain an accuracy of more than $1\%$, for {\bf arbitrary coupling strength}, that is all the way from short to large distances. As examples we compute, at zero temperature, the frequency dependent conductance in a Luttinger liquid with impurity, the spectral function in the double well problem of dissipative quantum mechanics and part of the space dependent succeptibility in the Kondo model .
description: 2 References corrected, three added. Discussion of the Screening cloud modified. 42 pages, harvmac, epsf and 6 figures
Pseudo-drag of a polariton superfluid
Creators: name: Chestnov, Igor Y.
name: Rubo, Yuri G.
name: Kavokin, Alexey V.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The drag of half-light half-mater quasiparticles, exciton-polaritons, by an electric current is a peculiar mechanism of light-matter interaction in solids. While an ideal superfluid is protected from being dragged by its zero viscosity, here we argue that the state of the superfluid polariton condensate formed by a non-resonant optical pumping can be controlled by the electric current. The proposed mechanism is based on the stimulated relaxation of moving uncondensed excitons dragged by the electric current. The stimulated relaxation process favors the formation of a moving condensate in a quantum state that is characterised by the lowest condensation threshold. We also show that the electron-mediated inelastic scattering of the reservoir excitons to the condensate leads to the transfer of a non-zero mean momentum to the electron gas thus contributing to the electric current. We predict the generation of circular electric currents in a micropillar cavity in the presence of a nonresonant laser pumping at normal incidence.
description: 7 pages, 4 figures
Acanthosomatidae Signoret 1864
Creators: name: Matocq, Armand
name: Azar, Dany
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Acanthosomatidae

description: Acanthosomatidae   — Cyphoưethus triưriatus (F., 1787).—Ehden = ن›ªا, [Caza Zgharta], 19-VIII-2001, Abdoul-Nour leg.
description: Published as part of Matocq, Armand & Azar, Dany, 2023, Preliminary inventory of terrestrial Heteroptera from Lebanon (Hemiptera: Leptopodomorpha, Cimicomorpha and Pentatomomorpha), pp. 1-26 in Zootaxa 5230 (1) on page 21, DOI: 10.11646/zootaxa.5230.1.1, http://zenodo.org/record/7550504
Library Design in Combinatorial Chemistry by Monte Carlo Methods
Creators: name: Falcioni, Marco
name: Deem, Michael W.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Strategies for searching the space of variables in combinatorial chemistry experiments are presented, and a random energy model of combinatorial chemistry experiments is introduced. The search strategies, derived by analogy with the computer modeling technique of Monte Carlo, effectively search the variable space even in combinatorial chemistry experiments of modest size. Efficient implementations of the library design and redesign strategies are feasible with current experimental capabilities.
description: 5 pages, 3 figures
Cydnidae Billberg 1820
Creators: name: Matocq, Armand
name: Azar, Dany
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cydnidae

description: Cydnidae   — Tritomegas bicolor (L., 1758).—Dekouaneh = ậḻاوflΑ, [Caza Matn], III-1999, C. Atallah leg.
description: Published as part of Matocq, Armand & Azar, Dany, 2023, Preliminary inventory of terrestrial Heteroptera from Lebanon (Hemiptera: Leptopodomorpha, Cimicomorpha and Pentatomomorpha), pp. 1-26 in Zootaxa 5230 (1) on page 21, DOI: 10.11646/zootaxa.5230.1.1, http://zenodo.org/record/7550504
BRAIN-COMPUTER INTERFACE FOR SUPERVISORY CONTROLS OF UNMANNED AERIAL VEHICLES
Creators: name: Gad, Abdelrahman Osama
Publisher: name: Purdue University Graduate School
Year: 2024
Subjects: classificationCode: 401799
subject: Mechanical engineering not elsewhere classified

description: This research explored a solution to a high accident rate in remotely operating Unmanned Aerial Vehicles (UAVs) in a complex environment; it presented a new Brain-Computer Interface (BCI) enabled supervisory control system to fuse human and machine intelligence seamlessly. This study was highly motivated by the critical need to enhance the safety and reliability of UAV operations, where accidents often stemmed from human errors during manual controls. Existing BCIs confronted the challenge of trading off a fully remote control by humans and an automated control by computers. This study met such a challenge with the proposed supervisory control system to optimize human-machine collaboration, prioritizing safety, adaptability, and precision in operation.The research work included designing, training, and testing BCI and the BCI-enabled control system. It was customized to control a UAV where the user’s motion intents and cognitive states were monitored to implement hybrid human and machine controls. The DJI Tello drone was used as an intelligent machine to illustrate the application of the proposed control system and evaluate its effectiveness through two case studies. The first case study was designed to train a subject and assess the confidence level for BCI in capturing and classifying the subject’s motion intents. The second case study illustrated the application of BCI in controlling the drone to fulfill its missions.The proposed supervisory control system was at the forefront of cognitive state monitoring to leverage the power of an ML model. This model was innovative compared to conventional methods in that it could capture complicated patterns within raw EEG data and make decisions to adopt an ensemble learning strategy with the XGBoost. One of the key innovations was capturing the user’s intents and interpreting these into control commands using the EmotivBCI app. Despite the headset's predefined set of detectable features, the system could train the user’s mind to generate control commands for all six degrees of freedom of adapting to the quadcopter by creatively combining and extending mental commands, particularly in the context of the Yaw rotation. This strategic manipulation of commands showcased the system's flexibility in accommodating the intricate control requirements of an automated machine.Another innovation of the proposed system was its real-time adaptability. The supervisory control system continuously monitors the user's cognitive state, allowing instantaneous adjustments in response to changing conditions. This innovation ensured that the control system was responsive to the user’s intent and adept at prioritizing safety through the arbitrating mechanism when necessary.
Impacts of climatic and varietal changes on phenology and yield components in rice production in Shonai region of Yamagata Prefecture, Northeast Japan for 36 years
Creators: name: Nguyen-Sy, Toan
name: Weiguo Cheng
name: Keitaro Tawaraya
name: Sugawara, Kazuaki
name: Kobayashi, Kazuhiko
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology
subject: Computational Biology

description: We investigated temporal changes in paddy rice phenology and yield under climatic and varietal changes in Shonai region, Yamagata Prefecture, northeast Japan across a period of 1982–2017. In the study region, the dominant variety shifted from Sasanishiki to Haenuki in mid 1990s. Temporal trends across the study period were significant in mean air temperatures for the months from May to July, and the temperature rise has accelerated heading, which was delayed by the varietal shift. We built models of the effects of climatic and varietal changes on phenological events and yield components: number of grains per land area, percentage ripened grains, and 1000-grain weight. Combining the yield component models, we built a yield model, with which we estimated the effect of the temperature rise from May to July on the yield. The temperature rise in May and June has reduced the yield by accelerating phenology, while that in July has increased the yield by raising 1000-grain weight. The net effect was no change in the yield across the study period, which, however, does not indicate an insensitivity of the yield to the temperature rise. Rather, the finding points to the dependency of the net change in the yield on seasonal pattern of the climate change. Climate change impacts on rice should therefore be quantified on the changes at monthly or shorter time scale rather than a seasonal mean. Our finding also points to the need to pay attention to the changes in agronomic practices such as varieties.
Power Corrections in Deep Inelastic Event Shape Variables
Creators: name: Dasgupta, Mrinal
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Results are presented for the leading power-suppressed (1/Q) contributions to shape variables in deep inelastic lepton scattering. These are then combined with available leading order perturbative estimates.
description: 6 pages,Latex2e, 2 figures. To be published in the proceedings of the 5th International workshop on Deep Inelastic Scattering, Chicago, April 1997
Contribution of the core to the thermal evolution of sub-Neptunes
Creators: name: Vazan, A.
name: Ormel, C. W.
name: Noack, L.
name: Dominik, C.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Sub-Neptune planets are a very common type of planets. They are inferred to harbour a primordial (H/He) envelope, on top of a (rocky) core, which dominates the mass. Here, we investigate the long-term consequences of the core properties on the planet mass-radius relation. We consider the role of various core energy sources resulting from core formation, its differentiation, its solidification (latent heat), core contraction and radioactive decay. We divide the evolution of the rocky core into three phases: the formation phase, which sets the initial conditions, the magma ocean phase, characterized by rapid heat transport, and the solid state phase, where cooling is inefficient. We find that for typical sub-Neptune planets of ~2-10 Earth masses and envelope mass fractions of 0.5-10% the magma ocean phase lasts several Gyrs, much longer than for terrestrial planets. The magma ocean phase effectively erases any signs of the initial core thermodynamic state. After solidification, the reduced heat flux from the rocky core causes a significant drop in the rocky core surface temperature, but its effect on the planet radius is limited. In the long run, radioactive heating is the most significant core energy source in our model. Overall, the long term radius uncertainty by core thermal effects is up to 15%.
description: ApJ Published
Potensi instrumen moral dalam melestarikan sumber air di Malaysia - Kajian kes Sungai Melaka
Creators: name: Hua, Ang Kean
Publisher: name: figshare
Year: 2019
Subjects: subject: Geography
subject: Education
subject: 60204 Freshwater Ecology
subject: FOS: Biological sciences
subject: Hydrology
subject: Physical Geography
subject: 50205 Environmental Management
subject: FOS: Earth and related environmental sciences
subject: 50204 Environmental Impact Assessment
subject: 50206 Environmental Monitoring
subject: Survey Results
subject: Environmental Humanities
subject: 220305 Ethical Theory
subject: FOS: Philosophy, ethics and religion

description: For Open Access, Please Visit https://www.articjou.com/2019/01/potensi-instrumen-moral-dalam.html
Diffractive photoproduction of meson pairs in the Söding model
Creators: name: Starkov, N. I.
name: Zotov, N. P.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the diffractive photoproduction of $π^+π^- , K^+K^- , D^+D^-$ meson pairs with high masses and transverse momenta in the framework of the Söding model. The total and differential cross sections are calculated for these processes. The role of the form factors is stressed.
description: 7 pages, 7 figures, latex; Talk at DIS 97 Workshop (Chicago, 1997)
Symplectic integration and physical interpretation of time-dependent coupled-cluster theory
Creators: name: Pedersen, Thomas Bondo
name: Kvaal, Simen
Publisher: name: arXiv
Year: 2018
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The formulation of the time-dependent Schrodinger equation in terms of coupled-cluster theory is outlined, with emphasis on the bivariational framework and its classical Hamiltonian structure. An indefinite inner product is introduced, inducing physical interpretation of coupled-cluster states in the form of transition probabilities, autocorrelation functions, and explicitly real values for observables, solving interpretation issues which are present in time-dependent coupled-cluster theory and in ground-state calculations of molecular systems under influence of external magnetic fields. The problem of the numerical integration of the equations of motion is considered, and a critial evaluation of the standard fourth-order Runge--Kutta scheme and the symplectic Gauss integrator of variable order is given, including several illustrative numerical experiments. While the Gauss integrator is stable even for laser pulses well above the perturbation limit, our experiments indicate that a system-dependent upper limit exists for the external field strengths. Above this limit, time-dependent coupled-cluster calculations become very challenging numerically, even in the full configuration interaction limit. The source of these numerical instabilities is shown to be rapid increases of the amplitudes as ultrashort high-intensity laser pulses pump the system out of the ground state into states that are virtually orthogonal to the static Hartree-Fock reference determinant.
description: 14 pages, 13 figures
Power Factor Correction of Inductive Loads using PLC
Creators: name: Sadat, Sayed Abdullah
name: Sreesobha, E.
name: Prasad, P. V. N.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper proposes an automatic power factor correction for variable inductive loads, most dominantly induction motors (IM) utilizing the Programmable Logic Controllers (PLC). This hardware implementation of a 3Ø Inductive load system focuses on the automatic correction of power factor using PLC. With the help of PLC, different performance parameters current level, real power, and inductive power are obtained and logged in the PC. Using PLC program, according to the control strategy to obtain a pre-specified power factor a set of capacitors sized in a binary rate will be switched on or off with the help of switching relays and contactors. This PLC control strategy relies on a lookup table which is prepared based on two input parameters - peak current and power factor, at a constant voltage. From these parameters, PLC will calculate the reactive power of the system and accordingly the right sequence of the capacitors are switched on in order to compensate for reactive power.
description: 8 pages, 12 figures, a conference paper
More models for lepton mixing with four constraints
Creators: name: Jurciukonis, D.
name: Lavoura, L.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose new lepton-mixing textures that may be enforced through well-defined symmetries in renormalizable models. Each of our textures has four sum rules for the neutrino mass observables. The models are based on the type-I seesaw mechanism; their charged-lepton mass matrices are diagonal because of the symmetries imposed. Each model has three versions, depending on the identification of the charged leptons. Testing all the models, we have found that five of them agree with the data at the 1 sigma level when the neutrino-mass ordering is normal, and two models agree with the data for an inverted ordering. We detail the predictions of each of those seven models.
description: 25 pages, 8 figures; In version 2 title and abstract modified, section 2 rewritten, section 3 have changes, v2 matches published version
Rényi and Tsallis entropies: three analytic examples
Creators: name: Olendski, O.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: A comparative study of one-dimensional quantum structures which allow analytic expressions for the position and momentum Rényi $R(α)$ and Tsallis $T(α)$ entropies, focuses on extracting the most characteristic physical features of these one-parameter functionals. Consideration of the harmonic oscillator reconfirms a special status of the Gaussian distribution: at any parameter $α$ it converts into the equality both Rényi and Tsallis uncertainty relations removing for the latter an additional requirement $1/2\leqα\leq1$ that is a necessary condition for all other geometries. It is shown that the lowest limit of the semi infinite range of the dimensionless parameter $α$ where \emph{momentum} components exist strongly depends on the \emph{position} potential and/or boundary condition for the \emph{position} wave function. Asymptotic limits reveal that in either space the entropies $R(α)$ and $T(α)$ approach their Shannon counterpart, $α=1$, along different paths. Similarities and differences between the two entropies and their uncertainty relations are exemplified. Some unsolved problems are pointed at too.
description: 9 figures
Cahn-Hilliard Theory for Unstable Granular Flows
Creators: name: van Noije, T. P. C.
name: Ernst, M. H.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A Cahn-Hilliard-type theory for hydrodynamic fluctuations is proposed that gives a quantitative description of the slowly evolving spatial correlations and structures in density and flow fields in the early stages of evolution of freely cooling granular fluids. Two mechanisms for pattern selection and structure formation are identified: unstable modes leading to density clustering (compare spinodal decomposition), and selective noise reduction (compare peneplanation in structural geology) leading to vortex structures. As time increases, the structure factor for the density field develops a maximum, which shifts to smaller wave numbers. This corresponds to an approximately diffusively growing length scale for density clusters. The spatial velocity correlations exhibit algebraic decay $\sim r^{-d}$ on intermediate length scales. The theoretical predictions for spatial correlation functions and structure factors agree well with molecular dynamics simulations of a system of inelastic hard disks.
description: 25 pages, including 11 figures
A Link Invariant from Quantum Dilogarithm
Creators: name: Kashaev, R. M.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: The link invariant, arising from the cyclic quantum dilogarithm via the particular $R$-matrix construction, is proved to coincide with the invariant of triangulated links in $S^3$ introduced in R.M. Kashaev, Mod. Phys. Lett. A, Vol.9 No.40 (1994) 3757. The obtained invariant, like Alexander-Conway polynomial, vanishes on disjoint union of links. The $R$-matrix can be considered as the cyclic analog of the universal $R$-matrix associated with $U_q(sl(2))$ algebra.
description: 10 pages, LaTeX
Berry curvature unravelled by the Nernst effect in Mn$_3$Ge
Creators: name: Wuttke, Christoph
name: Caglieris, Federico
name: Sykora, Steffen
name: Scaravaggi, Francesco
name: Wolter, Anja U. B.
name: Manna, Kaustuv
name: Süss, Vicky
name: Shekhar, Chandra
name: Felser, Claudia
name: Büchner, Bernd
name: Hess, Christian
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The discovery of topological quantum materials represents a striking innovation in modern condensed matter physics with remarkable fundamental and technological implications. Their classification has been recently extended to topological Weyl semimetals, i.e., solid state systems which exhibit the elusive Weyl fermions as low-energy excitations. Here we show that the Nernst effect can be exploited as a sensitive probe for determining key parameters of the Weyl physics, applying it to the non-collinear antiferromagnet Mn$_3$Ge. This compound exhibits anomalous thermoelectric transport due to enhanced Berry curvature from Weyl points located extremely close to the Fermi level. We establish from our data a direct measure of the Berry curvature at the Fermi level and, using a minimal model of a Weyl semimetal, extract for the first time the Weyl point energy and their distance in momentum-space.
Superconductivity from Undressing
Creators: name: Hirsch, J. E.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Photoemission experiments in high $T_c$ cuprates indicate that quasiparticles are heavily 'dressed' in the normal state, particularly in the low doping regime. Furthermore these experiments show that a gradual undressing occurs both in the normal state as the system is doped and the carrier concentration increases, as well as at fixed carrier concentration as the temperature is lowered and the system becomes superconducting. A similar picture can be inferred from optical experiments. It is argued that these experiments can be simply understood with the single assumption that the quasiparticle dressing is a function of the local carrier concentration. Microscopic Hamiltonians describing this physics are discussed. The undressing process manifests itself in both the one-particle and two-particle Green's functions, hence leads to observable consequences in photoemission and optical experiments respectively. An essential consequence of this phenomenology is that the microscopic Hamiltonians describing it break electron-hole symmetry: these Hamiltonians predict that superconductivity will only occur for carriers with hole-like character, as proposed in the theory of hole superconductivity.
Effect of thermostable mutations on the neurotensin receptor 1 (NTSR1) activation state
Creators: name: Shanthi Nagarajan
name: Alkayed, Nabil J.
name: Kaul, Sanjiv
name: Barnes, Anthony P.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: Neurotensin (NTS) is a 13-amino acid neuropeptide with neuroendocrine and vasoactive functions that is widely expressed in the central nervous system and gastrointestinal tract. NTS is sensed by a multiple cell surface proteins including two G protein-coupling receptors (GPCRs): NTS receptors 1 and 2 (NTSR1 and NTSR2). Crystal structures of NTSR1 have successfully elucidated agonist binding within the orthosteric pocket of receptor but have not revealed the full activation state of the receptor. Recent studies have attempted to address this challenge by improving NTSR1 crystal formation via thermostable mutants; unfortunately, these mutations exhibit functional defects in the G protein coupling of NTSR1. Here, we have used molecular dynamics simulations to gain greater insights into how the amino acid substitutions used in these thermostable mutants (E166A, L310A and F358A) impact receptor activation. Our simulations indicate that wild-type NTSR1 in complex with NTS8-13 shows more active-like features including a 17.7 Å shift in TM6, reflecting a network of polar and aromatic interactions orchestrating agonist-induced receptor conformational changes. We also provide evidence indicating that F358 is a precursor to the rotamer change observed in W321, and our collective analysis also suggests that mutations E166A and F358A are less impactful to G protein coupling than L310A. Furthermore, we believe that our findings can be used to design future NTSR1 mutants that do not interfere with agonist-induced conformational changes and downstream G protein coupling and thus produce structures that will allow visualization of the fully activated receptor conformation. Communicated by Ramaswamy H. Sarma
Limited Visibility and Uncertainty Aware Motion Planning for Automated Driving
Creators: name: Tas, Omer Sahin
name: Stiller, Christoph
Publisher: name: arXiv
Year: 2018
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Adverse weather conditions and occlusions in urban environments result in impaired perception. The uncertainties are handled in different modules of an automated vehicle, ranging from sensor level over situation prediction until motion planning. This paper focuses on motion planning given an uncertain environment model with occlusions. We present a method to remain collision free for the worst-case evolution of the given scene. We define criteria that measure the available margins to a collision while considering visibility and interactions, and consequently integrate conditions that apply these criteria into an optimization-based motion planner. We show the generality of our method by validating it in several distinct urban scenarios.
Does nonlocal gravity yield divergent gravitational energy-momentum fluxes?
Creators: name: Chu, Yi-Zen
name: Park, Sohyun
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Energy-momentum conservation requires the associated gravitational fluxes on an asymptotically flat spacetime to scale as $1/r^2$, as $r \to \infty$, where $r$ is the distance between the observer and the source of the gravitational waves. We expand the equations-of-motion for the Deser-Woodard nonlocal gravity model up to quadratic order in metric perturbations, to compute its gravitational energy-momentum flux due to an isolated system. The contributions from the nonlocal sector contains $1/r$ terms proportional to the acceleration of the Newtonian energy of the system, indicating such nonlocal gravity models may not yield well-defined energy fluxes at infinity. In the case of the Deser-Woodard model, this divergent flux can be avoided by requiring the first and second derivatives of the nonlocal distortion function $f[X]$ at $X=0$ to be zero, i.e., $f'[0] = 0 = f''[0]$. It would be interesting to investigate whether other classes of nonlocal models not involving such an arbitrary function can avoid divergent fluxes.
description: 21 pages, no figures, comments welcome; v2: references added; v3: corrected typos and added more references
Scalar quark searches in e^+e^- collisions at sqrt{s} = 181-184 GeV
Creators: name: The ALEPH Collaboration
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Searches for scalar top, scalar bottom and degenerate scalar quarks have been performed with data collected with the ALEPH detector at LEP. The data sample consists of 57 pb^-1 taken at sqrt{s} = 181-184 GeV. No evidence for scalar top, scalar bottom or degenerate scalar quarks was found in the channels tilde{t} --> c chi, tilde{t} --> b l snu, tilde{b} --> b chi, and tilde{q} --> q chi. From the channel tilde{t} --> c chi a limit of 74 GeV/c^2 has been set on the scalar top quark mass, independent of the mixing angle. This limit assumes a mass difference between the stop and the chi in the range 10-40 GeV/c^2. From the channel tilde{t} --> b l snu the mixing-angle-independent scalar top limit is 82 GeV/c^2, assuming m_stop - m_snu > 10 GeV/c^2. From the channel tilde{b} --> b chi a limit of 79 GeV/c^2 has been set on the mass of the supersymmetric partner of the left-handed state of the bottom quark. This limit is valid for m_sbottom - m_chi > 10 GeV/c^2. From the channel tilde{q} --> q chi a limit of 87 GeV/c^2 has been set on the mass of supersymmetric partners of light quarks, assuming five degenerate flavours and the production of both ``left-handed'' and ``right-handed'' squarks. This limit is valid for m_squark - m_chi > 5 GeV/c^2.
description: 15 pages, 5 figures, submitted to Physics Letters B
Quantum counterpart of Measure synchronization: A study on a pair of Harper systems
Creators: name: Sur, Saikat
name: Ghosh, Anupam
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Measure synchronization is a well-known phenomenon in coupled classical Hamiltonian systems over last two decades. In this paper, synchronization for coupled Harper system is investigated in both classical and quantum contexts. The concept of measure synchronization involves with the phase space and it seems that the measure synchronization is restricted in classical limit. But, on the contrary, here, we have extended the aforesaid synchronization in quantum domain. In quantum context, the coupling occurs between two many body systems via a time and site dependent potential. The coupling leads to the generation of entanglement between the quantum systems. We have used a technique, which is already accepted in the classical domain, in both the contexts to establish a connection between classical and quantum scenarios. Interestingly, results corresponding to both the cases lead to some common features.
description: 13 pages, 9 figures
Pentatomidae Leach 1815
Creators: name: Matocq, Armand
name: Azar, Dany
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae

description: Pentatomidae   — Jalla dumosa (L, 1758.).—Jabal Knaisseh = ậ×يḷƐƾا لب÷, [Caza Baabda], 18-V-2005, R. Gèze leg.
 — Zicrona caerulea (L., 1758).—Batroun = نورṢب, [Caza Batroun], IV-2004, Z. Abi Khattar leg.
 — Palomena prasina (L.).—Dahr Es-Sawan = ناوoeƾا رǝae, [Caza Matn], 4-XI-2004, J. Attieh leg.
 — Eysarcoris ventralis (Westwood, 1837).—Mazraat Kfar Debiane = نƖيبΑرǿfl ậΡرز*, [Caza Keserwan], 19-VII- 1994, R. Gèze leg.; Nahr El-Bared = ΑرƖبƾا رǝḻ, [Caza Akkar], 2-VI-2001, H. Abdoul-Nour leg.
 — Dyroderes umbraculatus (F., 1775).—Rayak = قƖǘر, [Caza Zahleh], 31-V-2005, Teillaty leg.
 — Eurydema (Eurydema) oleracea (L., 1758). — Ehden = ن›ªا, [Caza Zgharta], 30-V-2001, 4-VII-2004, 5-VI-2005, H. Abdoul-Nour leg..
description: Published as part of Matocq, Armand & Azar, Dany, 2023, Preliminary inventory of terrestrial Heteroptera from Lebanon (Hemiptera: Leptopodomorpha, Cimicomorpha and Pentatomomorpha), pp. 1-26 in Zootaxa 5230 (1) on page 21, DOI: 10.11646/zootaxa.5230.1.1, http://zenodo.org/record/7550504
Migrating super-Earths in low-viscosity discs: unveiling the roles of feedback, vortices, and laminar accretion flows
Creators: name: McNally, Colin P.
name: Nelson, Richard P.
name: Paardekooper, Sijme-Jan
name: Benítez-Llambay, Pablo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present the highest resolution study to date of super-Earths migrating in inviscid and low-viscosity discs, motivated by the connection to laminar, wind-driven models of protoplanetary discs. Our models unveil the critical role of vortices in determining the migration behaviour for partial gap-opening planets. Vortices form in pressure maxima at gap edges, and prevent the disc-feedback stopping of migration for intermediate planets in low-viscosity and inviscid discs, contrary to the concept of the `inertial limit' or `disc feedback' halting predicted from analytical models. Vortices may also form in the corotation region, and can dramatically modify migration behaviour through direct gravitational interaction with the planet. These features become apparent at high resolution, and for all but the highest viscosities there exist significant difficulties in obtaining numerically converged results. The migration of partial gap-opening planets, however, clearly becomes chaotic for sufficiently low viscosities. At moderate viscosity, a smooth disc-feedback regime is found in which migration can slow substantially, and the migration time-scale observed corresponds to migration being driven by diffusive relaxation of the gap edges. At high viscosity classical Type I migration is recovered. For Jupiter-analogue planets in inviscid discs, a wide, deep gap is formed. Transient Type II migration occurs over radial length-scales corresponding to the gap width, beyond which migration can stall. Finally, we examine the particle trapping driven by structures left in inviscid discs by a migrating planet, and find that particle traps in the form of multiple rings and vortices can persist long after the planet has passed. In this case, the observation of particle traps by submillimetre interferometers such as ALMA cannot be used to infer the current presence of an adjacent planet.
description: 24 pages, 22 figures, MNRAS accepted
DNA binding and cleavage, cytotoxicity and antimicrobial studies of Co(II), Ni(II), Cu(II) and Zn(II) complexes of 1-((E)-(4-(trifluoromethoxy)phenylimino)methyl)naphthalen-2-ol Schiff base
Creators: name: Rambabu, Aveli
name: Marri Pradeep Kumar
name: Ganji, Nirmala
name: Sreenu Daravath
name: Shivaraj
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences

description: DNA binding and cleavage, cytotoxicity and antimicrobial studies of Co(II), Ni(II), Cu(II) and Zn(II) complexes of 1-((E)-(4-(trifluoromethoxy)phenylimino)methyl)naphthalen-2-ol Schiff base