cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On-Device Sentence Similarity for SMS Dataset
Creators: name: Prabhu, Arun D
name: Arora, Nikhil
name: Vatsal, Shubham
name: Ramena, Gopi
name: Moharana, Sukumar
name: Purre, Naresh
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Determining the sentence similarity between Short Message Service (SMS) texts/sentences plays a significant role in mobile device industry. Gauging the similarity between SMS data is thus necessary for various applications like enhanced searching and navigation, clubbing together SMS of similar type when given a custom label or tag is provided by user irrespective of their sender etc. The problem faced with SMS data is its incomplete structure and grammatical inconsistencies. In this paper, we propose a unique pipeline for evaluating the text similarity between SMS texts. We use Part of Speech (POS) model for keyword extraction by taking advantage of the partial structure embedded in SMS texts and similarity comparisons are carried out using statistical methods. The proposed pipeline deals with major semantic variations across SMS data as well as makes it effective for its application on-device (mobile phone). To showcase the capabilities of our work, our pipeline has been designed with an inclination towards one of the possible applications of SMS text similarity discussed in one of the following sections but nonetheless guarantees scalability for other applications as well.
Higher-order corrections to spin-spin scalar interactions in HD$^+$ and H$_2^+$
Creators: name: Karr, Jean-Philippe
name: Haidar, Mohammad
name: Hilico, Laurent
name: Zhong, Zhen-Xiang
name: Korobov, Vladimir I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The largest hyperfine interaction coefficients in the hydrogen molecular ion HD$^+$, i.e. the electron-proton and electron-deuteron spin-spin scalar interactions, are calculated with estimated uncertainties slightly below 1~ppm. The $(Zα)^2 E_F$ relativistic correction, for which a detailed derivation is presented, QED corrections up to the order $α^3 \ln^2 (α)$ along with an estimate of higher-order terms, and nuclear structure corrections are taken into account. Improved results are also given for the electron-proton interaction coefficient in H$_2^+$, in excellent agreement with RF spectroscopy experiments. In HD$^+$, a 4$σ$ difference is found in the hyperfine splitting of the $(v,L)=(0,3) \to (9,3)$ two-photon transition that was recently measured with high precision. The origin of this discrepancy is unknown.
Measurement of B Decays to phi K gamma
Creators: name: The BABAR Collaboration
name: Aubert, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We search for the decays B- -> phi K- gamma and B0bar -> phi K0bar gamma in a data sample of 228 million BBbar pairs collected at the Upsilon(4S) resonance with the BaBar detector. We measure the branching fraction B(B- -> phi K- gamma) = (3.5 +/- 0.6 +/- 0.4) x 10^-6 and set an upper limit B(B0bar -> phi K0bar gamma) < 2.7 x 10^-6 at the 90% confidence level. We also measure the direct CP asymmetry in B- -> phi K- gamma, A_CP = (-26 +/- 14 +/- 5)%. The uncertainties are statistical and systematic, respectively.
description: 8 pages, 6 postscript figures, submitted to Physical Review D Rapid Communications
Optimal Conditions for Atomic Homodyne Detection on Bose-Einstein Condensates
Creators: name: da Cunha, B. R.
name: de Oliveira, M. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The dynamics of a two-mode Bose-Einstein condensate trapped in a double-well potential results approximately in an effective Rabi oscillation regime of exchange of population between both wells for sufficiently strong overlap between the modes functions. Facing this system as a temporal atomic beam splitter we show that this regime is optimal for a nondestructive atom-number measurement allowing an atomic homodyne detection, thus yielding indirect relative phase information about one of the two-mode condensates.
description: 9 pages, 5 figures
Disease Transmission on Random Graphs Using Edge-Based Percolation
Creators: name: Zhao, S.
name: Magpantay, F. M. G.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Social and Information Networks (cs.SI)
subject: Dynamical Systems (math.DS)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Biological sciences
subject: 00A71, 37N25, 92D25, 92D30

description: Edge-based percolation methods can be used to analyze disease transmission on complex social networks. This allows us to include complex social heterogeneity in our models while maintaining tractability. Here we review the seminal works on this field by Newman et al (2001); Newman (2002, 2003), and Miller et al (2012). We present a systematic discussion of the theoretical background behind these models, including an extensive derivation of the major results. We also connect these results relate back to the classical literature in random graph theory Molloy and Reed (1995, 1998). Finally, we also present an accompanying R package that takes epidemic and network parameters as input and generates estimates of the epidemic trajectory and final size. This manuscript and the R package was developed to help researchers easily understand and use network models to investigate the interaction between different community structures and disease transmission.
Statistical properties of the well deformed $^{153,155}$Sm nuclei and the scissors resonance
Creators: name: Malatji, K. L.
name: Beckmann, K. S.
name: Wiedeking, M.
name: Siem, S.
name: Goriely, S.
name: Larsen, A. C.
name: Ay, K. O.
name: Garrote, F. L. Bello
name: Campo, L. Crespo
name: Görgen, A.
name: Guttormsen, M.
name: Ingeberg, V. W.
name: Jones, P.
name: Kheswa, B. V.
name: von Neumann-Cosel, P.
name: Ozgur, M.
name: Potel, G.
name: Pellegri, L.
name: Renstrøm, T.
name: Tveten, G. M.
name: Zeiser, F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The Nuclear Level Densities (NLDs) and the $γ$-ray Strength Functions ($γ$SFs) of $^{153,155}$Sm have been extracted from (d,p$γ$) coincidences using the Oslo method. The experimental NLD of $^{153}$Sm is higher than the NLD of $^{155}$Sm, in accordance with microscopic calculations. The $γ$SFs of $^{153,155}$Sm are in fair agreement with QRPA calculations based on the D1M Gogny interaction. An enhancement is observed in the $γ$SF for both $^{153,155}$Sm nuclei around 3 MeV in excitation energy and is attributed to the M1 Scissors Resonance (SR). Their integrated strengths were found to be in the range 1.3 - 2.1 and 4.4 - 6.4 $μ^{2}_{N}$ for $^{153}$Sm and $^{155}$Sm, respectively. The strength of the SR for $^{155}$Sm is comparable to those for deformed even-even Sm isotopes from nuclear resonance fluorescence measurements, while that of $^{153}$Sm is lower than expected.
Εφαρμογές πληροφοριακών συστημάτων και δασοπονία:
Creators: name: Κουτσοβούλου, Αθηνά-Δήμητρα Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Πληροφοριακά συστήματα
Δεδομένα φυσικών πόρων
VBA
Information system
Natural resources data

description: Η χρήση της δασικής πληροφορικής είναι αρωγός στην προσπάθεια των επιστημόνων για την επίλυση των περιβαλλοντικών προβλημάτων. Συμβάλλει δε στην ευρύτερη και ευκολότερη πρόσβαση στην αυξανόμενη γνώση σε περιβαλλοντικά θέματα και στη δημιουργία εξειδικευμένου λογισμικού ώστε η ορθολογική χρήση της να οδηγεί στην προστασία και βιώσιμη ανάπτυξη του φυσικού περιβάλλοντος.Σκοπός της παρούσας εργασίας είναι η δημιουργία λογισμικού, το οποίο θα έχει την δυνατότητα εισαγωγής δεδομένων φυσικών πόρων, επεξεργασίας των δεδομένων, αυτοματοποίησης των υπολογισμών και εξαγωγής πληροφοριών. Με βάση τις παραμέτρους ταχύτητα - κόστος - ευχρηστία - φιλικότητα, το λειτουργικό περιβάλλον που επιλέχθηκε για την ανάπτυξη του λογισμικού είναι το Microsoft Office Excel με τη χρήση αντικειμενοστρεφούς προγραμματισμού για τη σύνταξη κώδικα στη Visual Basic for Applications (V.B.A.). Το πρόγραμμα δέχεται ως δεδομένα χρονοσειρές παρατηρήσεων και πειραματικών μετρήσεων και με τη χρήση υδρολογικών εξισώσεων υπολογίζεται ο απολήψιμος (ή ωφέλιμος) όγκος υδάτων ενός ταμιευτήρα πολλαπλών σκοπών. Με το λογισμικό αυτό επιτυγχάνεται η καλύτερη διαχείριση των δεδομένων και η δυνατότητα περαιτέρω επεξεργασίας των αποτελεσμάτων τους.
description: The use of information technology, regarding forestry, is the key-point in the effort of scientists to resolve environmental problems. In addition, it contributes in the wider and easier access to the constantly increasing knowledge in environmental subjects and in the creation of specialised software so as to its rational use to lead to the protection and sustainable development of natural environment.The present work aims to the creation of a software, which has the ability to import natural resources data, to collaborate data, to automatise calculations and to give information. Microsoft Office Excel, based on speed - cost - utilisation and friendliness, is the chosen functional environment, selected for the development of the pre-mentioned software and for the syntax of code in Visual Basic for Applications (V.B.A.). The program accepts data of climatic observations and experimental measurements.Using hydrologic equations, it calculates recoverable (or beneficial) water’s volume of a multiple aimed tank. Better management of data and further collaboration of their results are achieved via this software.
Off-diagonal correlations of lattice impenetrable bosons in one dimension
Creators: name: Gangardt, D. M.
name: Shlyapnikov, G. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider off-diagonal correlation functions of impenetrable bosons on a lattice. By using the Jordan-Wigner transformation the one-body density matrix is represented as (Toeplitz) determinant of a matrix of fermionic Green functions. Using the replica method we calculate exactly the full long-range asymptotic behaviour of the one-body density matrix. We discuss how subleading oscillating terms, originating from short-range correlations give rise to interesting features in the momentum distribution.
description: 10 pages. Submitted to the Focus Issue on 'Cold Atoms in Optical Lattices' of New Journal of Physics
On the minimal conductivity of graphene
Creators: name: Ziegler, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The minimal conductivity of graphene is a quantity measured in the DC limit. It is shown, using the Kubo formula, that the actual value of the minimal conductivity is sensitive to the order in which certain limits are taken. If the DC limit is taken before the integration over energies is performed, the minimal conductivity of graphene is $4/π$ (in units of $e^2/h$) and it is $π/2$ in the reverse order. The value $π$ is obtained if weak disorder is included via a small frequency-dependent selfenergy. In the high-frequency limit the minimal conductivity approaches $π/2$ and drops to zero if the frequency exceeds the cut-off energy of the particles.
description: 5 pages, 1 figure, extended version
Initial Reports of the Deep Sea Drilling Project - Volume 78B
Creators: name: Hyndman, R.D.
name: Salisbury, M.H.
name: The Leg 78B Science Party
Publisher: name: U.S. Government Printing Office
Year: 1984
Subjects: Deep Sea Drilling Project
Glomar Challenger
DSDP
Leg 78B
Site 395
Mid-Atlantic Ridge
Downhole logging

description: This volume covers Leg 78B of the cruises of the Drilling Vessel Glomar Challenger. Leg 78B represents the first cruise specifically designed for downhole measurements. The original impetus for the cruise arose from the scarcity of good downhole logs in the ocean crust. This was particularly critical in the few deep crustal holes drilled, because the recovery in such holes was poor and because the physical properties of the core material were clearly not representative of the large-scale properties of the crustal sections penetrated. One of the deepest of these holes and most attractive candidates for re-entry (since it had been cased to basement) was Hole 395A on the Mid-Atlantic Ridge. The hole had been drilled on Leg 45 on the west side of the ridge as part of a long-term program designed to determine the petrological, geochemical, and geophysical properties of the ocean crust and to determine the mechanisms by which it forms and evolves. Although the hole had been continuously cored and the recovered material extensively studied, no downhole measurements had been made, and the core recovery was poor. The primary objective of the Leg 78B scientific program was therefore to study the geophysical and hydrogeological properties of the upper oceanic crust at Site 395 through downhole logging and downhole experiments, for comparison with previous studies of the core and with regional geophysics. On Leg 78B, it was planned to use logging tools designed to measure the diameter of the hole, the temperature of the water in the hole, and the sonic velocity, electrical resistivity, bulk density, porosity, and natural gamma radiation of the formation. The downhole experiment program was planned to include (1) a packer experiment for large-scale permeability tests, in situ pressure tests, large-volume water sampling, and hydrofracture tests; (2) a program to measure the temperature and collect water samples down the hole using the self-contained heat-flow/pore-water sampler; (3) a large-scale resistivity experiment; and (4) the experimental emplacement of a borehole seismometer. Leg 78B began in San Juan, Puerto Rico in March 1981 and ended in Las Palmas, Grand Canary Island in April 1981.
Analytic torsions on contact manifolds
Creators: name: Rumin, Michel
name: Seshadri, Neil
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 58J52, 32V05, 32V20, 11M36, 37C30

description: We propose a definition for analytic torsion of the contact complex on contact manifolds. We show it coincides with Ray-Singer torsion on any 3-dimensional CR Seifert manifold equipped with a unitary representation. In this particular case we compute it and relate it to dynamical properties of the Reeb flow. In fact the whole spectral torsion function we consider may be interpreted on CR Seifert manifolds as a purely dynamical function through Selberg-type trace formulae.
description: 40 pages
Enhancement of YIG$|$Pt spin conductance by local Joule annealing
Creators: name: Kohno, Ryuhei
name: Thiery, Nicolas
name: An, Kyongmo
name: Noël, Paul
name: Vila, Laurent
name: Naletov, Vladimir V.
name: Beaulieu, Nathan
name: Youssef, Jamal Ben
name: de Loubens, Grégoire
name: Klein, Olivier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report that Joule heating can be used to enhance the interfacial spin conductivity between a metal and an oxide. We observe that local annealing of the interface at about 550\,K by injecting large current densities ($>10^{12}\text{A/m}^{2}$) into a pristine 7\,nm thick Pt nanostrip evaporated on top of yttrium iron garnet (YIG), can improve the spin transmission up to a factor 3: a result of particular interest for interfacing ultra thin garnet films where strong chemical etching of the surface has to be avoided. The effect is confirmed by different methods: spin Hall magnetoresistance, spin pumping and non-local spin transport. We use it to study the influence of the YIG$|$Pt coupling on the non-linear spin transport properties. We find that the cross-over current from a linear to a non-linear spin transport regime is independent of this coupling, suggesting that the behavior of pure spin currents circulating in the dielectric are mostly governed by the physical properties of the bare YIG film beside the Pt nanostrip.
Defect mediated melting and the breaking of quantum double symmetries
Creators: name: Bais, F. A.
name: Mathy, C. J. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this paper, we apply the method of breaking quantum double symmetries to some cases of defect mediated melting. The formalism allows for a systematic classification of possible defect condensates and the subsequent confinement and/or liberation of other degrees of freedom. We also show that the breaking of a double symmetry may well involve a (partial) restoration of an original symmetry. A detailed analysis of a number of simple but representative examples is given, where we focus on systems with global internal and external (space) symmetries. We start by rephrasing some of the well known cases involving an Abelian defect condensate, such as the Kosterlitz-Thouless transition and one-dimensional melting, in our language. Then we proceed to the non-Abelian case of a hexagonal crystal, where the hexatic phase is realized if translational defects condense in a particular rotationally invariant state. Other conceivable phases are also described in our framework.
description: 10 pages, 4 figures, updated references
APPLICATION CONSTRUCTION AS A TYPE OF SYNTACTIC COMMUNICATION
Creators: name: Azizova, Zarinakhan
Publisher: name: Zenodo
Year: 2024

description: In the article, the nlova construction is studied as one of the structural types of a complex syntactic whole, in which its structural structure and semantic features, and the grammatical expression of the components that make them up, as well as the syntactic relations between the components involved in the organization of syntactic units, are analyzed by means of examples taken from the German language and related conclusions are reached.
Poisson deformations of affine symplectic varieties
Creators: name: Namikawa, Yoshinori
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14B, 14E, 14J, 32G

description: We shall prove that the Poisson deformation functor of an affine (singular) symplectic variety is unobstructed. As a corollary, we prove the following result. Theorem: For an affine symplectic variety $X$ with a good $C^*$-action (where its natural Poisson structure is positively weighted), the following are equivalent (1) $X$ has a crepant projective resolution. (2) $X$ has a smoothing by a Poisson deformation.
description: Version 7(36 pages)
Machine-Learning-Guided Prediction Models of Critical Temperature of Cuprates
Creators: name: Lee, Donggun
name: You, Daegun
name: Lee, Dongwoo
name: Li, Xin
name: Kim, Sooran
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Cuprates, a member of high-Tc superconductors, have been on the long-debate on their superconducting mechanism, so that predicting the critical temperature of cuprates still remains elusive. Herein, using machine learning and first principle calculations, we predict the maximum superconducting transition temperature (Tc,max) of hole-doped cuprates and suggest the explicit functional form for Tc,max with the root-mean-square-error of 3.705 K and the coefficient of determination R2 of 0.969. We employed two machine learning models; one is a parametric brute force searching method and another is a non-parametric random forest regression model. We have found that material dependent parameters such as the Bader charge of apical oxygen, the bond strength between apical atoms, and the number of superconducting layers are important features to estimate Tc,max. Furthermore, we predict the Tc,max of hypothetical cuprates generated by replacing apical cations with other elements. When Ga is an apical cation, the predicted Tc,max is the highest among the hypothetical structures with 71, 117, and 131 K for one, two, and three CuO2 layers, respectively. These findings suggest that machine learning could guide the design of new high-Tc superconductors in the future.
Exact solution of the Boltzmann equation for low-temperature transport coefficients in metals II: Scattering by ferromagnons
Creators: name: Amarel, J.
name: Belitz, D.
name: Kirkpatrick, T. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In a previous paper (Paper I) we developed a technique for exactly solving the linearized Boltzmann equation for the electrical and thermal transport coefficients in metals in the low-temperature limit. Here we adapt this technique to determine the magnon contribution to the electrical and thermal conductivities, and to the thermopower, in metallic ferromagnets. For the electrical resistivity $ρ$ at asymptotically low temperatures we find $ρ\propto \exp{(-T_{\rm min}/T)}$, with $T_{\rm min}$ an energy scale that results from the exchange gap and a temperature independent prefactor of the exponential. The corresponding result for the heat conductivity is $σ_h \propto T^3\,\exp{(T_{\rm min}/T)}$, and thermopower is $S \propto T$. All of these results are exact, including the prefactors.
description: 13pp., 1 fig
Application of Bernoulli Polynomials for Solving Variable-Order Fractional Optimal Control-Affine Problems
Creators: name: Nemati, Somayeh
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 34A08, 65M70 (Primary) 11B68 (Secondary)

description: We propose two efficient numerical approaches for solving variable-order fractional optimal control-affine problems. The variable-order fractional derivative is considered in the Caputo sense, which together with the Riemann-Liouville integral operator is used in our new techniques. An accurate operational matrix of variable-order fractional integration for Bernoulli polynomials is introduced. Our methods proceed as follows. First, a specific approximation of the differentiation order of the state function is considered, in terms of Bernoulli polynomials. Such approximation, together with the initial conditions, help us to obtain some approximations for the other existing functions in the dynamical control-affine system. Using these approximations, and the Gauss-Legendre integration formula, the problem is reduced to a system of nonlinear algebraic equations. Some error bounds are then given for the approximate optimal state and control functions, which allow us to obtain an error bound for the approximate value of the performance index. We end by solving some test problems, which demonstrate the high accuracy of our results.
description: This is a preprint of a paper whose final and definite form is published Open Access in Axioms, available at [https://www.mdpi.com/journal/axioms]. Submitted: September 4, 2020; Revised: October 4, 2020; Accepted: October 6, 2020
Unveiling the hidden reaction kinetic network of carbon dioxide in supercritical aqueous solutions
Creators: name: Li, Chu
name: Yao, Yuan
name: Pan, Ding
Publisher: name: arXiv
Year: 2024
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Dissolution of CO$_2$ in water followed by the subsequent hydrolysis reactions is of great importance to the global carbon cycle, and carbon capture and storage. Despite enormous previous studies, the reactions are still not fully understood at the atomistic scale. Here, we combined ab initio molecular dynamics simulations with Markov state models to elucidate the reaction mechanisms and kinetics of CO$_2$ in supercritical water both in the bulk and nanoconfined states. The integration of unsupervised learning with first-principles data allows us to identify complex reaction coordinates and pathways automatically instead of a priori human speculation. Interestingly, our unbiased modelling found a novel pathway of dissolving CO$_2$(aq) under graphene nanoconfinement, involving the pyrocarbonate anion (C$_2$O$_5^{2-}$(aq)) as an intermediate state. The pyrocarbonate anion was previously hypothesized to have a fleeting existence in water; however our study reveals that it is a crucial reaction intermediate and stable carbon species in the nanoconfined solutions. We even observed the formation of pyrocarbonic acid (H$_2$C$_2$O$_5$(aq)), which was unknown in water. The unexpected appearance of pyrocarbonates is related to the superionic behavior of the confined solutions. We also found that carbonation reactions involve collective proton transfer along transient water wires, which exhibits concerted behavior in the bulk solution but proceeds stepwise under nanoconfinement. Our study highlights the importance of large oxocarbons in aqueous carbon reactions, with great implications for the deep carbon cycle and the sequestration of CO$_2$.
Relationship between systemic adaptation to physical effort and plasma potassium in untrained and trained Andalusian and angloarabian horses
Creators: name: BENITO HERNÁNDEZ, MILAGROS
Publisher: name: Zenodo
Year: 2003

description: Plasma K accumulation during exercise results from the balance between exchange through biological membranes (mainly muscle fibres and erythrocytes), distribution to other tissues and the haemoconcentration. In the present study, the effect of exercise and training on plasma K concentrations and its relationships with other physiological variables have been analysed in two equine breeds.
The co-evolution of the obscured quasar PKS1549-79 and its host galaxy: evidence for a high accretion rate and warm outflow
Creators: name: Holt, J.
name: Tadhunter, C. N.
name: Morganti, R.
name: Bellamy, M.
name: Delgado, R. M. Gonzalez
name: Tzioumis, A.
name: Inskip, K. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: ABRIDGED: We use deep optical, IR and radio observations to explore the symbiosis between the nuclear activity and galaxy evolution in the southern compact radio source PKS1549-79 (z=0.1523). The optical imaging observations reveal the presence of tidal tail features which provide strong evidence that the host galaxy has undergone a major merger in the recent past. This is further supported by the detection of a young stellar population which was formed 50-250Myr ago and makes up 1-30% of the total stellar mass. Despite the core-jet structure of the radio source we detect HI absorption associated with both the core and the jet. The luminous, quasar-like AGN (M_V < -23.5) is highly extinguished (A_v > 4.9) at optical wavelengths and shows many properties in common with narrow line Seyfert 1 galaxies (NLS1), including relatively narrow permitted lines (FWHM ~ 1940 km/s), highly blueshifted [OIII] lines (~680 km/s), and evidence that the putative supermassive black hole is accreting at a high Eddington ratio. This suggests that accretion at high Eddington ratio does not prevent the formation of powerful jets. Our observations lend strong support to the predictions of some recent numerical simulations of galaxy mergers in which the black hole grows rapidly through merger-induced accretion following the coalescence of the nuclei of two merging galaxies; the major growth phase largely hidden by the natal gas and dust. Although the models predict that AGN-driven outflows will eventually remove the gas from the bulge of the host galaxy, the visible warm outflow in PKS1549-79 is not currently capable of doing so. ABRIDGED
description: 21 pages, 12 figures, accepted for publication in MNRAS
Scaling Laws for Dynamic Solar Loops
Creators: name: Bradshaw, Stephen J.
name: Emslie, A. Gordon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The scaling laws which relate the peak temperature $T_M$ and volumetric heating rate $E_H$ to the pressure $P$ and length $L$ for static coronal loops were established over 40 years ago; they have proved to be of immense value in a wide range of studies. Here we extend these scaling laws to {\it dynamic} loops, where enthalpy flux becomes important to the energy balance, and study impulsive heating/filling characterized by upward enthalpy flows. We show that for collision-dominated thermal conduction, the functional dependencies of the scaling laws are the same as for the static case, when the radiative losses scale as $T^{-1/2}$, but with a different constant of proportionality that depends on the Mach number $M$ of the flow. The dependence on the Mach number is such that the scaling laws for low to moderate Mach number flows are almost indistinguishable from the static case. When thermal conduction is limited by turbulent processes, however, the much weaker dependence of the scattering mean free path (and hence thermal conduction coefficient) on temperature leads to a limiting Mach number for return enthalpy fluxes driven by thermal conduction between the corona and chromosphere.
description: 14 pages, 3 figures
Development of learning materials "Chantaboon reed mat pattern of Samet Ngam community" through a participatory process
Creators: name: Sompong Munmanee
Publisher: name: he Center of Excellence of Kalasin Phraewa Traditional Textiles of Kalasin University
Year: 2023
Subjects: Learning Material:Mats:Reed:Participatory Process:Chanthaburi

description: Asian Journal of Traditional and Innovative Arts and Textiles, 2, 3, 1-19
Optimization code with weighting function for the reconstruction of coronal magnetic fields
Creators: name: Wiegelmann, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We developed a code for the reconstruction of nonlinear force-free and non-force-free coronal magnetic fields. The 3D magnetic field is computed numerically with the help of an optimization principle. The force-free and non-force-free codes are compiled in one program. The force-free approach needs photospheric vector magnetograms as input. The non-force-free code additionally requires the line-of-sight integrated coronal density distribution in combination with a tomographic inversion code. Previously the optimization approach has been used to compute magnetic fields using all six boundaries of a computational box. Here we extend this method and show how the coronal magnetic field can be reconstructed only from the bottom boundary, where the boundary conditions are measured with vector magnetographs. The program is planed for use within the Stereo mission.
description: 23 pages, 5 figures
Average Fidelity in n-Qubit systems
Creators: name: Cabrera, R.
name: Baylis, W. E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This letter generalizes the expression for the average fidelity of single qubits, as found by Bowdrey et al., to the case of n qubits. We use a simple algebraic approach with basis elements for the density-matrix expansion expressed as Kronecker products of n Pauli spin matrices. An explicit integration over initial states is avoided by invoking the invariance of the state average under unitary transformations of the initial density matrix. The results have applications to measurements of quantum information, for example in ion-trap and NMR experiments.
description: 4 pages, no figures. Revision includes additional references and a more detailed symmetry argument
Behavior of Hydroxyl Radicals on Water Ice at Low Temperatures
Creators: name: Tsuge, Masashi
name: Watanabe, Naoki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Because chemical reactions on/in cosmic ice dust grains covered by amorphous solid water (ASW) play important roles in generating a variety of molecules, many experimental and theoretical studies have focused on the chemical processes occurring on the ASW surface. In laboratory experiments, conventional spectroscopic and mass-spectrometric detection of stable products is generally employed to deduce reaction channels and mechanisms. However, despite their importance, the details of chemical reactions involving reactive species (i.e., free radicals) have not been clarified because of the absence of experimental methods for in situ detection of radicals. Because OH radicals can be easily produced in interstellar conditions by not only the photolysis and/or ion bombardments of H2O but also the reaction of H and O atoms, they are thought to be one of the most abundant radicals on ice dust. In this context, the development of a close monitoring method of OH radicals on the ASW surface may help to elucidate the chemical reactions occurring on the ASW surface.
description: 25 pages, 9 figures; Accepted for publication in Acc. Chem. Res
MPEC 2025-C158 : COMET P/2025 C1 (ATLAS)
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2025
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: COMET P/2025 C1 (ATLAS)

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Legend of Phra Ruang in Nakhon Thai Valley: From Local Legend to Explaining National History
Creators: name: Teerawatt   Sankom
Publisher: name: The Center of Excellence of Kalasin Phraewa Traditional Textiles of Kalasin University
Year: 2023
Subjects: Phra Ruang
Legend
The Nakhon Thai Valley
History

description: Asian Journal of Traditional and Innovative Arts and Textiles, 2, 3, 20-32
“Thich Quang Duc” the monk of Thien Mu Temple
Creators: name: Prachatip Makmool
Publisher: name: The Center of Excellence of Kalasin Phraewa Traditional Textiles of Kalasin University
Year: 2023
Subjects: Thich Quang Duc
Thien Mu temple
Buddhism
Vietnam

description: Asian Journal of Traditional and Innovative Arts and Textiles, 2, 3, 33-47
title: Dealing with Heterogeneity in Discrete Survival Analysis using the Cure Model
Creators: name: Schneider, Micha
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Cure models are able to model heterogeneity which arises from two subgroups with different hazards. One subgroup is characterized as long-term survivors with a hazard equal to zero, while the other subgroup is at-risk of the event. While cure models for continuous time are well established, cure models for discrete time points are rarely prevalent. In this article I describe discrete cure models, how they are defined, estimated and can be applied to real data. I propose to use penalization techniques to stabilize the model estimation, to smooth the baseline and to perform variable selection. The methods are illustrated on data about criminal recidivism and applied to data about breast cancer. As one result patients with no positive lymph nodes, a very small tumor, which can be well differentiated from healthy cells and with ethnicity which is neither black or white have the best estimated chances to belong to the long-term survivors of breast cancer.
Landau quantization of a circular Quantum Dot using the BenDaniel-Duke boundary condition
Creators: name: Gopalakrishnan, Sriram
name: Biswas, Sayak
name: Handa, Shivam
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We derive the energy levels of a circular Quantum Dot (QD) under a transverse magnetic field, incorporating the Ben-Daniel Duke boundary condition (BDD). The parameters in our model are the confinement barrier height, the size of the QD, the magnetic field strength, and a mass ratio highlighting the effect of using BDD. Charge densities, transition energies, and the dependence of energies on magnetic field has been calculated to show the strong influence of BDD. We find that our numerical calculations agree well with experimental results on the GaAs-InGaAs Quantum Dot and can be used further. We also provide an insightful analytical approximation to our numerical results, which converges well for larger values of size and confinement.
description: 13 pages, 4 figures. To appear in Elsevier Superlattices and Microstructures
Comptonisation of Cosmic Microwave Background Photons in Dwarf Spheroidal Galaxies
Creators: name: Culverhouse, Thomas L.
name: Evans, N. Wyn
name: Colafrancesco, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present theoretical modelling of the electron distribution produced by annihilating neutralino dark matter in dwarf spheroidal galaxies (dSphs). In particular, we follow up the idea of Colafrancesco (2004) and find that such electrons distort the cosmic microwave background (CMB) by the Sunyaev-Zeldovich effect. For an assumed neutralino mass of 10 GeV and beam size of 1'', the SZ temperature decrement is of the order of nano-Kelvin for dSph models with a soft core. By contrast, it is of the order of micro-Kelvin for the strongly cusped dSph models favoured by some cosmological simulations. Although this is out of reach of current instruments, it may well be detectable by future mm telescopes, such as ALMA. We also show that the upscattered CMB photons have energies within reach of upcoming X-ray observatories, but that the flux of such photons is too small to be detectable soon. Nonetheless, we conclude that searching for the dark matter induced Sunyaev-Zeldovich effect is a promising way of constraining the dark distribution in dSphs, especially if the particles are light.
description: 10 pages, 5 figures, MNRAS, in press
Light scattering by a metallic nanoparticle coated with a nematic liquid crystal
Creators: name: Yannopapas, Vassilios
name: Fytas, Nikolaos G.
name: Kyrimi, Vicky
name: Kallos, Efthymios
name: Vanakaras, Alexandros G.
name: Photinos, Demetri J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the optical properties of gold nanoparticles coated with a nematic liquid crystal whose director field is distributed around the nanoparticle according to the anchoring conditions at the surface of the nanoparticle. The distribution of the nematic liquid crystal is obtained by minimization of the corresponding Frank free-energy functional whilst the optical response is calculated by the discrete-dipole approximation. We find, in particular, that the anisotropy of the nematic liquid-crystal coating does not affect much the (isotropic) optical response of the nanoparticle. However, for strong anchoring of the nematic liquid-crystal molecules on the surface of nanoparticle, the inhomogeneity of the coating which is manifested by a ring-type singularity (disclination or Saturn ring), produces an enhancement of the extinction cross spectrum over the entire visible spectrum.
description: 13 pages, 5 figures, version published in Phys. Status Solidi A
Typography Design for the Art & Culture Center, Khon Kaen University
Creators: name: Thapthai  Thaworn
Publisher: name: The Center of Excellence of Kalasin Phraewa Traditional Textiles of Kalasin University
Year: 2023
Subjects: Typeface
Isan art and culture
Isan cultural identity

description: Asian Journal of Traditional and Innovative Arts and Textiles, 2, 3, 48-63
On the Robustness of Cross-Concentrated Sampling for Matrix Completion
Creators: name: Cai, HanQin
name: Huang, Longxiu
name: Kundu, Chandra
name: Su, Bowen
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (stat.ML)
subject: Information Theory (cs.IT)
subject: Machine Learning (cs.LG)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Matrix completion is one of the crucial tools in modern data science research. Recently, a novel sampling model for matrix completion coined cross-concentrated sampling (CCS) has caught much attention. However, the robustness of the CCS model against sparse outliers remains unclear in the existing studies. In this paper, we aim to answer this question by exploring a novel Robust CCS Completion problem. A highly efficient non-convex iterative algorithm, dubbed Robust CUR Completion (RCURC), is proposed. The empirical performance of the proposed algorithm, in terms of both efficiency and robustness, is verified in synthetic and real datasets.
description: 58th Annual Conference of Information Sciences and Systems
Rankine--Hugoniot conditions for fluids whose energy depends on space and time derivatives of density
Creators: name: Gavrilyuk, S. L.
name: Gouin, Henri
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: By using the Hamilton principle of stationary action, we derive the governing equations and Rankine-Hugoniot conditions for continuous media where the specific energy depends on the space and time density derivatives. The governing system of equations is a time reversible dispersive system of conservation laws for the mass, momentum and energy. We obtain additional relations to the Rankine-Hugoniot conditions coming from the conservation laws and discuss the well-founded of shock wave discontinuities for dispersive systems.
Interacting Systems for Self-Correcting Low Power Switching
Creators: name: Salahuddin, Sayeef
name: Datta, Supriyo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this paper we first show that dynamic switching schemes can be used to reduce energy dissipation below the thermodynamic minimum of NkTlnr (N= number of state variables, 1/r=error probability), but only at the expense of the error immunity inherent in thermodynamic processes for which the final state is insensitive to the switching dynamics. It is further shown that, for a system which has internal feedback, e.g. nanomagnets, such that all N spins act in concert, it should be possible to switch with an energy dissipation of the order of kTlnr (considerably less than the thermodynamic limit of NkTlnr), while retaining an error immunity comparable to thermodynamic switching.
Factors limiting population growth of non-cyclic collared lemmings at low densities
Creators: name: Reid, Donald Grant
Publisher: name: University of British Columbia
Year: 2009

description: I examined factors limiting population growth of collared lemmings (Dicrostonyx kilangmiutak) at low densities (<3 adults/ha), at Pearce Point, Northwest Territories, Canada. Populations were followed by mark-recapture, and radiotelemetry. They fluctuated annually, typically with summer declines, and winter increases. I tested the hypothesis that predation mortality limits population growth in summer, by comparing a population in an 11 ha predator exclosure (PE) with three control populations (18-25 ha). Predation, principally by red fox (Vulpes vulpes) and rough-legged hawks (Buteo lagopus), was the proximate cause of most adult and neo natal mortality. No other mortality factor compensated for decreased predation mortality in PE. Adult survival and recruitment increased significantly in PE. Controls declined in 1990 and 1991. PE declined less quickly. It did not grow, because weanlings dispersed long distances (53 m/d), and frequently left PP. I conclude that predation mortality is sufficient and necessary to limit summer population growth. Three other factors potentially limiting population growth in PP were investigated. Social interactions did not inhibit reproduction because neither the proportion of lemmings reproductively active, nor litter sizes, differed between PE and controls. Food availability did not limit growth because principal foods were not depleted in PP. net primary production was similar to that in regions where lemmings irrupt, and enhanced production with fertilization was not consumed by lemmings. Behavioural sensitivity to predation risk appeared limiting because growth rates of neonates were higher in PE than on controls. Lemmings bred in all winters (1987-92). Variance in rates of winter population growth was significantly explained by a combination of mean daily temperature in autumn, when lemmings change morphology, and an index of cold stress in winter. Summer predation mortality was destabilizing. Specialist and semi-generalist predators drove lemmings to densities too low for persistence of these predators. Generalist predators continued to limit lemmings in the absence of specialists and semi-generalists. The summer predator community at Pearce Point, consisting mostly of generalists or semi-generalists, contrasts with a predominantly specialist predator community at arctic sites where lemmings irrupt. A relatively diverse prey base, especially including arctic ground squirrels (Sperniophilus parryii), seemed critical for the maintenance of predators that limit lemmings in summer.
Learning outcomes about important Buddhist days by positive reinforcement to cultivate desirable characteristics in being Thai and global citizenship of students Prathom Suksa 1 at Ban Kham Rian School, Tumbon Nhongbua, Phayakkhaphum Phisai District, Mahasarakham Province
Creators: name: Witsuta Samrandee
Publisher: name: The Center of Excellence of Kalasin Phraewa Traditional Textiles of Kalasin University
Year: 2023
Subjects: Learning outcomes:Buddhist:Positive reinforcement:Desirable characteristics Being Thai citizenship

description: Asian Journal of Traditional and Innovative Arts and Textiles, 2, 3, 64-74