cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Belief-Invariant and Quantum Equilibria in Games of Incomplete Information
Creators: name: Auletta, Vincenzo
name: Ferraioli, Diodato
name: Rai, Ashutosh
name: Scarpa, Giannicola
name: Winter, Andreas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Drawing on ideas from game theory and quantum physics, we investigate nonlocal correlations from the point of view of equilibria in games of incomplete information. These equilibria can be classified in decreasing power as communication equilibria, belief-invariant equilibria, and correlated equilibria, all of which contain the familiar Nash equilibria. The notion of belief-invariant equilibrium appeared in game theory in the 90s. However, the class of non-signalling correlations associated to belief-invariance arose naturally already in the 80s in the foundations of quantum mechanics. In the present work, we explain and unify these two origins of the idea and study the above classes of equilibria, together with quantum correlated equilibria, using tools from quantum information but the language of (algorithmic) game theory. We present a general framework of belief-invariant communication equilibria, which contains correlated equilibria and quantum correlated equilibria as special cases. Our framework also contains the theory of Bell inequalities and their violations due to non-locality, which is a question of intense interest in the foundations of quantum mechanics, and it was indeed the original motivation for the aforementioned studies. Moreover, in our framework we can also model quantum games where players have conflicting interests, a recent developing topic in physics. We then use our framework to show new results related to the social welfare of equilibria. Namely, we exhibit a game where belief-invariance is socially better than any correlated equilibrium, and a game where all non-belief-invariant communication equilibria have a suboptimal social welfare. We also show that optimal social welfare can sometimes be achieved by quantum mechanical correlations, which do not need an informed mediator to be implemented, and go beyond the classical shared randomness approach.
Impact of gamma' particle coarsening on the critical resolved shear stress of nickel-base superalloys with low aluminium and/or titanium content
Creators: name: Ispánovity, Péter Dusán
name: Bakó, Botond
name: Weygand, Daniel
name: Hoffelner, Wolfgang
name: Samaras, Maria
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In Ni-base superalloys with low Al and/or Ti content the precipitation and subsequent coarsening of gamma' particles at intermediate temperatures contribute to the degradation of the mechanical properties of the alloy. In the present paper the coarsening process is modelled and the change of the critical resolved shear stress of the alloy due to coarsening of the gamma' particles is calculated by means of statistical analysis of the depinning of a single gliding edge dislocation. It is found that the contribution of gamma' hardening to the critical resolved shear stress at 973 K reduces to more than half of its original value in less than one year.
description: 8 pages, 5 figures
On the determination of cusp points of 3-R\underline{P}R parallel manipulators
Creators: name: Moroz, Guillaume Inria
name: Rouiller, Fabrice
name: Chablat, Damien
name: Wenger, Philippe
Publisher: name: arXiv
Year: 2010
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This paper investigates the cuspidal configurations of 3-RPR parallel manipulators that may appear on their singular surfaces in the joint space. Cusp points play an important role in the kinematic behavior of parallel manipulators since they make possible a non-singular change of assembly mode. In previous works, the cusp points were calculated in sections of the joint space by solving a 24th-degree polynomial without any proof that this polynomial was the only one that gives all solutions. The purpose of this study is to propose a rigorous methodology to determine the cusp points of 3-R\underline{P}R manipulators and to certify that all cusp points are found. This methodology uses the notion of discriminant varieties and resorts to Gröbner bases for the solutions of systems of equations.
Family presence and visitation in critical care : a rapid evidence assessment
Creators: name: Charlton, Sara-Grey Maureen
Publisher: name: University of British Columbia
Year: 2015

description: Patients and families want to be in close proximity to one another during the phase of critical illness. This has historically been challenged by restrictive hospital visiting hours. Nurses have played the gatekeeper role and decided who could visit the patient, when, and for how long. A scholarly review of the existing literature was conducted to identify what patients, families and nurses believe about visiting and to determine and suggest best evidence for practice, policy, education and research. Using a Rapid Evidence Assessment (REA) methodology 18 studies were evaluated through the lens of Patient and Family Centred Care. The best evidence is presented as well as the recommendations for best practice, policy, education and future research to help promote family presence in the Intensive Care Unit. Families and patients had improved outcomes, physiological and psychological, when Intensive Care Unit policy supports the presence of the family at the bedside. Nurses felt that working with families was part of their expected practice but struggled with the increased workload. They also struggled with relinquishing control over visitation but when they did patients and families felt empowered. The key recommendations are to create flexible patient controlled visitation policies in the Intensive Care Unit, replicate studies to reinforce the findings from the studies presented, provide education for nurses about family nursing, and education for families and patients regarding the unit policies and events.
Reconstructing the intergalactic UV background with QSO absorption lines
Creators: name: Fechner, Cora
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a new approach to constrain the spectral energy distribution of the intergalactic UV background observationally by studying metal absorption systems. We study single-component metal line systems exhibiting various well-measured species. Among the observed transitions at least two ratios of ionization stages from the same element are required, e.g. CIII/CIV and SiIII/SiIV. For each system photoionization models are constructed varying the spectrum of the ionizing radiation. The spectral energy distribution can then be constrained by comparing the models with the observed column density ratios. Extensive tests with artificial absorbers show that the spectrum of the ionizing radiation cannot be reconstructed unambiguously, but it is possible to constrain the main characteristics of the spectrum. Furthermore, the resulting physical parameters of the absorber, such as ionization parameter, metallicity, and relative abundances, may depend strongly on the adopted ionizing spectrum. Even in case of well-fitting models the uncertainties can be as high as ~0.5 dex for the ionization parameter and up to ~1.5 dex for the metallicity. Therefore, it is essential to know the hardness of the UV background when estimating the metallicity of the intergalactic medium. Applying the procedure to a small sample of 3 observed single-component metal line systems yields a soft ionizing radiation at z > 2 and a slightly harder spectrum at z < 2. The resulting energy distributions exhibit strong HeII Ly alpha re-emission features suggesting that reprocessing by intergalactic HeII is important. Comparing to UV background spectra from the literature indicates that the recent model of Madau & Haardt (2009) including sawtooth modulation due to reprocessing by intergalactic HeII with delayed helium reionization fits the investigated systems very well.
description: accepted for publication by A&A
On population resilience to external perturbations
Creators: name: Roques, Lionel
name: Chekroun, Mickaël D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Analysis of PDEs (math.AP)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 35K57, 35K55, 35J60, 35P05, 35P15, 92D25, 92D40, 60G60

description: We study a spatially explicit harvesting model in periodic or bounded environments. The model is governed by a parabolic equation with a spatially dependent nonlinearity of Kolmogorov--Petrovsky--Piskunov type, and a negative external forcing term $-δ$. Using sub- and supersolution methods and the characterization of the first eigenvalue of some linear elliptic operators, we obtain existence and nonexistence results as well as results on the number of stationary solutions. We also characterize the asymptotic behavior of the evolution equation as a function of the forcing term amplitude. In particular, we define two critical values $δ^*$ and $δ_2$ such that, if $δ$ is smaller than $δ^*$, the population density converges to a "significant" state, which is everywhere above a certain small threshold, whereas if $δ$ is larger than $δ_2$, the population density converges to a "remnant" state, everywhere below this small threshold. Our results are shown to be useful for studying the relationships between environmental fragmentation and maximum sustainable yield from populations. We present numerical results in the case of stochastic environments.
Hydrodynamic sound modes and Galilean symmetry breaking in a magnon fluid
Creators: name: Rodriguez-Nieva, Joaquin F.
name: Podolsky, Daniel
name: Demler, Eugene
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The non-interacting magnon gas description in ferromagnets breaks down at finite magnon density where momentum-conserving collisions between magnons become important. Observation of the collision-dominated regime, however, has been hampered by the lack of probes to access the energy and lengthscales characteristic of this regime. Here we identify a key signature of the collision-dominated hydrodynamic regime---a magnon sound mode---which governs dynamics at low frequencies and can be detected with recently-introduced spin qubit magnetometers. The magnon sound mode is an excitation of the longitudinal spin component with frequencies below the spin wave continuum in gapped ferromagnets. We also show that, in the presence of exchange interactions with SU(2) symmetry, the ferromagnet hosts an usual hydrodynamic regime that lacks Galilean symmetry at all energy and lengthscales. The hydrodynamic sound mode, if detected, can lead to a new platform to explore hydrodynamic behavior in quantum materials.
description: 5+12 pages, 2+2 figures
Schur's theorem of antiholomorphic type for quasi-Kählerian manifolds
Creators: name: Ganchev, Georgi
name: Kassabov, Ognian
Publisher: name: arXiv
Year: 2010
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53B35

description: It is proved, that if a quasi-Kähler manifold $M$ of dimension greater or equal to 6 is of pointwise constant antiholomorphic sectional curvature $ν$, then $ν$, the scalar curvature and the $*$-scalar curvature of $M$ are constants.
description: 4 pages, MR 85c:53106
On the Stokes-type resolvent problem associated with time-periodic flow around a rotating obstacle
Creators: name: Eiter, Thomas
Publisher: name: Weierstrass Institute
Year: 2021
Subjects: subject: Stokes flow
subject: rotating obstacle
subject: resolvent problem
subject: time-periodic solutions
subject: 76D07
subject: 76U05
subject: 47A10
subject: 35B10
subject: 76D05
subject: 35Q30

description: Consider the resolvent problem associated with the linearized viscous flow around a rotating body. Within a setting of classical Sobolev spaces, this problem is not well posed on the whole imaginary axis. Therefore, a framework of homogeneous Sobolev spaces is introduced where existence of a unique solution can be guaranteed for every purely imaginary resolvent parameter. For this purpose, the problem is reduced to an auxiliary problem, which is studied by means of Fourier analytic tools in a group setting. In the end, uniform resolvent estimates can be derived, which lead to the existence of solutions to the associated time-periodic linear problem.
TOPSIS-Sort ile ülkelerin çocuklar açısından yaşanabilirlik sınıflandırması
Creators: name: Aytekin, Ahmet
Publisher: name: figshare
Year: 2021
Subjects: subject: 220302 Decision Theory
subject: FOS: Philosophy, ethics and religion
subject: 170202 Decision Making
subject: FOS: Psychology
subject: 111704 Community Child Health
subject: FOS: Health sciences
subject: 111799 Public Health and Health Services not elsewhere classified

description: It is an unquestionable fact that children who will shape the future life or try to live in geographies with different structures under conditions that contain great differences from each other. In this study, it is aimed to classify countries in terms of the opportunities and conditions they provide to children in the context of fifteen criteria. In order to achieve this goal, the data were obtained from the UNICEF database, and the analyzes were carried out with TOPSIS-SORT, one of the multi-criteria decision-making methods. Class profiles should be determined to group countries into five classes from the highest to the lowest in terms of child livability. At this point, the range values of the criteria were used. The ratio of the population under the age of 18 to the total population, life expectancy at birth, number of deaths among children aged 0-14, maternal mortality ratio, average vaccination, and disease care rates, low-weight childbirth rate, malnutrition among preschool children, child marriage, birth registration, GDP per capita, access to basic sanitation services, thinness, overweight, health share in government expenditure are among the criteria used in classification. Thirty-two countries, including Switzerland, Norway, and Luxembourg, are among the countries in the high livability class. Turkey is located in medium-high countries, including second-class countries like Qatar and Portugal. There are forty-nine countries in the third (middle) class, eleven in the fourth (low-middle) class, and forty-one in the fifth (low) class, which is the last class, the majority of which are countries from the African continent. In general, it has been observed that economically prosperous countries can provide more opportunities for children. However, some countries have been found to try to provide good opportunities for children, even though they do not have a relatively high level of economic welfare. The first two classes do not include any African country. The reason for this, internal turmoil and conflicts are widely seen in African countries. On the other hand, it has been observed that India, which has achieved sustainable economic growth in recent years, cannot carry this success to provide a livable environment for children.
The AGN, Star-Forming, and Morphological Properties of Luminous IR-Bright/Optically-Faint Galaxies
Creators: name: Donley, J. L.
name: Rieke, G. H.
name: Alexander, D. M.
name: Egami, E.
name: Perez-Gonzalez, P. G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the AGN, star-forming, and morphological properties of a sample of 13 MIR-luminous (f(24) > 700uJy) IR-bright/optically-faint galaxies (IRBGs, f(24)/f(R) > 1000). While these z~2 sources were drawn from deep Chandra fields with >200 ks X-ray coverage, only 7 are formally detected in the X-ray and four lack X-ray emission at even the 2 sigma level. Spitzer IRS spectra, however, confirm that all of the sources are AGN-dominated in the mid-IR, although half have detectable PAH emission responsible for ~25% of their mid-infrared flux density. When combined with other samples, this indicates that at least 30-40% of luminous IRBGs have star-formation rates in the ULIRG range (~100-2000 Msun/yr). X-ray hardness ratios and MIR to X-ray luminosity ratios indicate that all members of the sample contain heavily X-ray obscured AGN, 80% of which are candidates to be Compton-thick. Furthermore, the mean X-ray luminosity of the sample, log L(2-10 keV)(ergs/s)=44.6, indicates that these IRBGs are Type 2 QSOs, at least from the X-ray perspective. While those sources most heavily obscured in the X-ray are also those most likely to display strong silicate absorption in the mid-IR, silicate absorption does not always accompany X-ray obscuration. Finally, ~70% of the IRBGs are merger candidates, a rate consistent with that of sub-mm galaxies (SMGs), although SMGs appear to be physically larger than IRBGs. These characteristics are consistent with the proposal that these objects represent a later, AGN-dominated, and more relaxed evolutionary stage following soon after the star-formation-dominated one represented by the SMGs.
description: Accepted for publication in The Astrophysical Journal, 15 pages, 7 figures, 4 tables
Scottish Maternal and Infant Nutrition Survey, 2017
MINS
Creators: name: Scottish Government
Publisher: name: UK Data Service
Year: 2024

description:
The Scottish Maternal and Infant Nutrition Survey, 2017 (MINS) was commissioned by the Scottish Government to help support the implementation of the Maternal and Infant Nutrition Framework for Action (2011). The overall aim of the survey was to gather information on maternal nutrition, breastfeeding, infant feeding and related health behaviours amongst women in Scotland in 2017.

Three separate cohorts of women were invited to self-complete a questionnaire between March and July 2017: expectant mothers who were 20+ weeks pregnant; mothers whose babies were 8-12 weeks old; mothers whose babies were 8-12 months old. More than 2,500 responses from across Scotland were received for each survey cohort.

The results of the survey were published by the Scottish Government in February 2018. The information gathered is being used to inform future Scottish Government policy and to assist health services and other organisations to design and implement effective nutritional support for families.

The decision to carry out this survey was made in response to the cancellation of the previously well established UK-wide Infant Feeding Survey (1975-2010).
A general lower bound for the domination number of cylindrical graphs
Creators: name: Carreño, José Juan
name: Martínez, José Antonio
name: Puertas, María Luz
Publisher: name: arXiv
Year: 2018
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C38, 05C76, 05C85

description: In this paper we present a lower bound for the domination number of the Cartesian product of a path and a cycle, that is tight if the length of the cycle is a multiple of five. This bound improves the natural lower bound obtained by using the domination number of the Cartesian product of two paths, that is the best one known so far.
description: 12 pages, 3 figures
Swift observations of the 2006 outburst of the recurrent nova RS Ophiuchi: III. X-ray spectral modelling
Creators: name: Vaytet, N. M. H.
name: O'Brien, T. J.
name: Page, K. L.
name: Bode, M. F.
name: Lloyd, M.
name: Beardmore, A. P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Following the Swift X-ray observations of the 2006 outburst of the recurrent nova RS Ophiuchi, we developed hydrodynamical models of mass ejection from which the forward shock velocities were used to estimate the ejecta mass and velocity. In order to further constrain our model parameters, here we present synthetic X-ray spectra from our hydrodynamical calculations which we compare to the Swift data. An extensive set of simulations was carried out to find a model which best fits the spectra up to 100 days after outburst. We find a good fit at high energies but require additional absorption to match the low energy emission. We estimate the ejecta mass to be in the range (2-5) x 10^{-7} solar masses and the ejection velocity to be greater than 6000 km/s (and probably closer to 10,000 km/s). We also find that estimates of shock velocity derived from gas temperatures via standard model fits to the X-ray spectra are much lower than the true shock velocities.
description: 13 pages, 5 figures, Accepted for publication in ApJ
Rotation of the CMB polarisation by foreground lensing
Creators: name: Di Dio, Enea
name: Durrer, Ruth
name: Fanizza, Giuseppe
name: Marozzi, Giovanni
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the weak lensing corrections to the CMB polarization anisotropies. We concentrate on the effect of rotation and show that the rotation of polarisation is a true physical effect which has to be taken into account at second order in perturbation theory. We clarify inconsistencies on the treatment of this rotation in the recent literature. We also show that at first order in perturbation theory there is no rotation of polarisation also for vector and tensor modes.
description: 16 pages, 5 figures. Some minor typos fixed. Results unchanged
The landscape of divergence in silverleaf sunflowers
Creators: name: Moyers, Brooke Taylor
Publisher: name: University of British Columbia
Year: 2015

description: The Texas endemic silverleaf sunflower, Helianthus argophyllus, exhibits striking genetic variation in life history: some individuals flower in late summer and are relatively short, while other individuals delay flowering in favor of growth until fall. The central goal of this research is to identify and characterize the evolutionary drivers of this variation: either local adaptation under divergent natural selection, neutral phenotypic divergence resulting from reduced gene flow and subsequent genetic drift, or both. Helianthus argophyllus exhibits strong regional genetic structure. However, populations from the central area of the species range form a single genetic cluster but are split into two phenotypic clusters: mainland coast populations, which are primarily tall and late flowering, and barrier island populations, which contain short/early flowering and tall/later flowering individuals at roughly equal frequencies. Some traits, including floral size characters, are more differentiated across the species range than is expected based on neutral genetic divergence (QST > FST), a signal of local adaptation. In a reciprocal transplant experiment, barrier island plants had higher survival rates and overall fitness than non-local individuals at barrier island sites. Observations of selection in wild populations revealed directional selection for early flowering in barrier island populations that contrasts with selection for a later flowering optimum in mainland coast populations. Collectively, these analyses support a hypothesis of adaptive divergence in flowering time in H. argophyllus, although the ecological mechanism(s) and genetic basis of this divergence have yet to be explored.
The Agriculture of West Asia
Creators: name: Tegeler, Henrietta Holm
name: Tegeler, Henrietta Holm
Publisher: name: Unknown
Year: 1966
Subjects: Agricultural and Food Policy
Crop Production/Industries
Food Consumption/Nutrition/Food Safety
International Development
International Relations/Trade
Labor and Human Capital
Land Economics/Use
Livestock Production/Industries
Productivity Analysis

description: Wherever pertinent and reliable data for the countries of the Arabian Peninsula are available, these are included and so noted. But, for the most part this publication includes in its analysis--and broadly designates as "West Asia"--only the eight countries of greater agricultural significance: Cyprus, Iran, Iraq, Israel, Jordan, Lebanon, the Syrian Arab Republic, and Turkey.
No Drama Quantum Theory?
Creators: name: Akhmeteli, Andrey
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This work builds on the following result of a previous article (quant-ph/0509044): the matter field can be naturally eliminated from the equations of the scalar electrodynamics (the Klein-Gordon-Maxwell electrodynamics) in the unitary gauge. The resulting equations describe independent dynamics of the electromagnetic field (they form a closed system of partial differential equations). An improved derivation of this surprising result is offered in the current work. It is also shown that for this system of equations, a generalized Carleman linearization (Carleman embedding) procedure generates a system of linear equations in the Hilbert space, which looks like a second-quantized theory and is equivalent to the original nonlinear system on the set of solutions of the latter. Thus, the relevant local realistic model can be embedded into a quantum field theory. This model is equivalent to a well-established model - the scalar electrodynamics, so it correctly describes a large body of experimental data. Although it does not describe the electronic spin and possibly some other experimental facts, it may be of great interest as a "no drama quantum theory", as simple (in principle) as classical electrodynamics. Possible issues with the Bell theorem are discussed.
description: 4 pages
Customer on the Move: Strategic Implications of Mobile Banking for Banks and Financial Enterprises
Creators: name: Tiwari, Rajnish
name: Buse, Stephan
name: Herstatt, Cornelius
Publisher: name: TUHH Universitätsbibliothek
Year: 2006
Subjects: subject: Mobile Banking
subject: Mobile Finanzdienste
subject: Mobile Commerce
subject: Mobile Business, Multikanalstrategie
subject: Mobile Financial Services
subject: Mobile Business, Multi-channel Strategy
subject: 330

description: The increased need/wish for mobility amongst various sections of the society, particularly amongst professionally active groups, is confronting credit institutions (banks) and other enterprises offering financial services, with challenges to adjust their service portfolio in a way to best suit the needs of their customers. On the other hand it also opens up a new arena of opportunities by making it possible to offer innovative, value-added services so as to not only cater to the needs arising out of the mobility but also by actively inducing demand for new, mobility-centric services.
 This paper examines strategic implications of these changes in customer behavior as perceived by the banks. It introduces the findings of a bank survey conducted by the authors in Germany. The survey discovered that banks expect Mobile Banking to gain greater relevance in near future and are positioning themselves not to be left behind.
Quasiscarred modes and their branching behavior at an exceptional point
Creators: name: Ryu, Jung-Wan
name: Lee, Soo-Young
Publisher: name: arXiv
Year: 2011
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study quasiscarring phenomenon and mode branching at an exceptional point (EP) in typically deformed microcavities. It is shown that quasiscarred (QS) modes are dominant in some mode group and their pattern can be understood by short-time ray dynamics near the critical line. As cavity deformation increases, high-Q and low-Q QS modes are branching in an opposite way, at an EP, into two robust mode types showing QS and diamond patterns, respectively. Similar branching behavior can be also found at another EP appearing at a higher deformation. This branching behavior of QS modes has its origin on the fact that an EP is a square-root branch point.
description: 5 pages, 5 figures
Effect of half-quantum vortices on magnetoresistance of perforated superconducting films
Creators: name: Vakaryuk, Victor
name: Vinokur, Valerii
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recent cantilever magnetometry measurements of annular micron-size samples of Sr2RuO4 have revealed evidence for the existence of half-quantum vortices (HQVs) in this material [Jang et al. 2011]. We propose to look for HQVs in transport measurements and calculate magnetoresistance of a perforated superconducting film close to the transition temperature in the presence of HQVs. We analyze the dependence of magnetoresistance on the thermodynamic stability of HQVs which according to [Jang et al. 2011] can be varied by the application of an in-plane magnetic field and point out features which may help to identify them.
description: 4 pages, 2 figures. Accepted for publication in Phys. Rev. Lett
On Fixed-point theorems in Intuitionistic Fuzzy metric Space I
Creators: name: Samanta, T. K.
name: Mohinta, Sumit
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 03F55, 46S40

description: In this paper, first we have established two sets of sufficient conditions for a TS-IF contractive mapping to have unique fixed point in a intuitionistic fuzzy metric space. Then we have defined \,$(\,ε\,,\, λ\,)$\, IF-uniformly locally contractive mapping and \,$η\,-$\,chainable space, where it has been proved that the \,$(\,ε\,,\, λ\,)$\, IF-uniformly locally contractive mapping possesses a fixed point
description: 11 pages
Protracted Kondo coherence with dilute carrier density in Cerium based nickel pnictides
Creators: name: Zhang, Peng
name: Liu, Bo
name: Zhang, Shengli
name: Haule, K.
name: Dai, Jianhui
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Nozi$\grave{e}$res' exhaustion theory argues the temperature for coherently screening of all local moments in Kondo lattice could be much lower than the temperature of single moment screening with insufficient number of conduction electrons. Recent experiment [Luo et al, PNAS, 112,13520 (2015)] indicates the cerium based nickel pnictides $CeNi_{2-δ}As_2 (δ\approx0.28)$ with low carrier density is an ideal material to exam such protracted Kondo screening. Using the density functional theory and dynamical mean-field theory, we calculated the respective electronic structures of paramagnetic $CeNi_2As_2$/$CeNi_2P_2$. In contrast to structurally analogous layered iron pnictides, the electronic structures of the present systems show strong three-dimensionality with substantially small contributions of Ni-3d electrons to the carrier density. Moreover, we find significant Kondo resonance peaks in the compressed $CeNi_2As_2$ and $CeNi_2P_2$ at low temperatures, accompanied by topological changes of the Fermi surfaces. We also find similar quantum phase transition in $CeNi_2As_2$ driven by chemical pressure via the isovalence As$\rightarrow$P substitution.
Multi-band superconductivity in LaFeAsO_{0.9}F_{0.1} single crystals probed by high-field vortex torque magnetometry
Creators: name: Li, G.
name: Grissonanche, G.
name: Gurevich, A.
name: Zhigadlo, N. D.
name: Katrych, S.
name: Bukowski, Z.
name: Karpinski, J.
name: Balicas, L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: To probe manifestations of multiband superconductivity in oxypnictides, we measured the angular dependence of the magnetic torque $τ(θ)$ in the mixed state of LaO$_{0.9}$F$_{0.1}$FeAs single crystals as a function of temperature $T$ and magnetic fields $H$ up to 18 T. The paramagnetic contribution of the Fe ions is properly treated in order to extract the effective mass anisotropy parameter $γ=(m_c/m_{ab})^{1/2}$ from $τ(θ)$. We show that $γ$ depends strongly on both $T$ and $H$, reaching a maximum value of $\sim$ 10 followed by a decrease towards values close to 1 as $T$ is lowered. The observed field dependencies of the London penetration depth $λ_{ab}$ and $γ$ suggest the onset of suppression of a superconducing gap at $H \approx H_{c2}/3$.
description: 7 pages, 7 figures
Two-Dimensional Curved Fronts in a Periodic Shear Flow
Creators: name: Smaily, Mohammad El
name: Hamel, Francois
name: Huang, Rui
Publisher: name: arXiv
Year: 2010
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B40, 35B50, 35J60

description: This paper is devoted to the study of travelling fronts of reaction-diffusion equations with periodic advection in the whole plane $\mathbb R^2$. We are interested in curved fronts satisfying some "conical" conditions at infinity. We prove that there is a minimal speed $c^*$ such that curved fronts with speed $c$ exist if and only if $c\geq c^*$. Moreover, we show that such curved fronts are decreasing in the direction of propagation, that is they are increasing in time. We also give some results about the asymptotic behaviors of the speed with respect to the advection, diffusion and reaction coefficients.
description: 2 figures, 28 pages
Stone pseudovarieties
Creators: name: Almeida, Jorge
name: Klíma, Ondřej
Publisher: name: arXiv
Year: 2019
Subjects: subject: Logic (math.LO)
subject: General Topology (math.GN)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 46H05, 06E15, 08A62

description: Profinite algebras are the residually finite compact algebras; their underlying topological spaces are Stone spaces. We extend the theory of profinite algebras to a more general setting of Stone topological algebras. We introduce Stone pseudovarieties, that is, classes of Stone topological algebras of a fixed topological signature that are closed under taking Stone quotients, closed subalgebras and finite direct products. Looking at Stone spaces as the dual spaces of Boolean algebras, we find a simple characterization of when the dual space admits a natural structure of topological algebra. This provides a new approach to duality theory which culminates in the proof that a Stone quotient of a Stone topological algebra that is residually in a given Stone pseudovariety is also residually in it, thereby extending the corresponding result of M. Gehrke for the Stone pseudovariety of all finite algebras over discrete signatures. The residual closure of a Stone pseudovariety is thus a Stone pseudovariety, and these are precisely the Stone analogues of varieties. A Birkhoff type theorem for Stone varieties is also established.
description: Parts of the first version of this paper have been moved to other papers
The mass-loss return from evolved stars to the Large Magellanic Cloud III. Dust properties for carbon-rich asymptotic giant branch stars
Creators: name: Srinivasan, Sundar
name: Sargent, B. A.
name: Matsuura, M.
name: Meixner, M.
name: Kemper, F.
name: Tielens, A. G. G. M.
name: Volk, K.
name: Speck, A. K.
name: Woods, Paul M.
name: Gordon, K.
name: Marengo, M.
name: Sloan, G. C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a 2Dust model for the dust shell around a LMC long-period variable (LPV) previously studied as part of the OGLE survey. OGLE LMC LPV 28579 (SAGE J051306.40-690946.3) is a carbon-rich asymptotic giant branch (AGB) star for which we have photometry and spectra from the Spitzer SAGE and SAGE-Spec programs along with UBVIJHK_s photometry. By modeling this source, we obtain a baseline set of dust properties to be used in the construction of a grid of models for carbon stars. We reproduce its spectral energy distribution using a mixture of AmC and SiC (15% by mass). The grain sizes are distributed according to the KMH model. The best-fit model has an optical depth of 0.28 for the shell at the peak of the SiC feature, with R_in~1430 R_sun or 4.4 R_star. The temperature at this inner radius is 1310 K. Assuming an expansion velocity of 10 km s^-1, we obtain a dust mass-loss rate of 2.5x10^-9 M_sun yr-1. We calculate a 15% variation in this rate by testing the fit sensitivity against variation in input parameters. We also present a simple model for the molecular gas in the extended atmosphere that could give rise to the 13.7 μm feature seen in the spectrum. We find that a combination of CO and C_2H_2 gas at an excitation temperature of about 1000 K and column densities of 3x10^21 cm^-2 and 10^19 cm^-2 respectively are able to reproduce the observations. Given that the excitation temperature is close to T_dust(R_in), most of the molecular contribution probably arises from the inner shell region. The luminosity corresponding to the first epoch of SAGE observations is 6580 L_sun. For an effective temperature of about 3000 K, this implies a stellar mass of 1.5-2 M_sun and an age of 1-2.5 Gyr. For a gas:dust ratio of 200, we obtain a gas mass-loss rate of 5.0x10^-7 M_sun yr^-1, consistent with the gas mass-loss rates estimated from the period, color and 8 μm flux of the source.
description: 14 pages, 5 figures, accepted for publication in Astronomy & Astrophysics
Strong and weak chaos in weakly nonintegrable many-body Hamiltonian systems
Creators: name: Mulansky, Mario
name: Ahnert, Karsten
name: Pikovsky, Arkady
name: Shepelyansky, Dima
Publisher: name: arXiv
Year: 2011
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study properties of chaos in generic one-dimensional nonlinear Hamiltonian lattices comprised of weakly coupled nonlinear oscillators, by numerical simulations of continuous-time systems and symplectic maps. For small coupling, the measure of chaos is found to be proportional to the coupling strength and lattice length, with the typical maximal Lyapunov exponent being proportional to the square root of coupling. This strong chaos appears as a result of triplet resonances between nearby modes. In addition to strong chaos we observe a weakly chaotic component having much smaller Lyapunov exponent, the measure of which drops approximately as a square of the coupling strength down to smallest couplings we were able to reach. We argue that this weak chaos is linked to the regime of fast Arnold diffusion discussed by Chirikov and Vecheslavov. In disordered lattices of large size we find a subdiffusive spreading of initially localized wave packets over larger and larger number of modes. The relations between the exponent of this spreading and the exponent in the dependence of the fast Arnold diffusion on coupling strength are analyzed. We also trace parallels between the slow spreading of chaos and deterministic rheology.
description: 15 pages, 14 figures
Examining community capacity to support Karen refugee women's mental health and well-being in the context of resettlement in Canada
Creators: name: Clark, Nancy
Publisher: name: University of British Columbia
Year: 2015

description: From 2005 to 2009, Karen refugee women and their families living along the Thailand Burma border were the largest group to be resettled in South Western British Columbia. Research suggests that communities located at the metropolitan periphery lack capacity to provide equitable, inclusive and accessible services for minority populations. Moreover, there exist growing inequities in health and health care for refugee women. As a result of historical oppression, many Karen women arrived in Canada with lower literacy, lower education and exposure to trauma and violence; however, little is known about Karen women’s needs for resettlement. The purpose of this study was to examine community capacity in the context of Karen women’s resettlement, i.e. to understand the social and structural processes that impacted their mental health and well-being, the factors that intersected to support their resettlement process, and the ways the receiving community responded to their resettlement needs. Ethnographic data was collected over a seventeen-month period, including participant observation and, in-depth individual and focus group interviews with Karen women, settlement workers, health care and social service providers (N=38). Drawing on postcolonial feminist theory and tenets of intersectionality and cultural safety, findings suggest that non-government organizations promoted successful resettlement and mitigated the effects of trauma by supporting Karen women’s health literacy. However, settlement reforms underpinned by neoliberal governance structures resulted in gendering and mainstreaming of settlement services, negatively impacting the Karen women and families’ ability to access health care services and social supports. The overall lack of knowledge about their needs, integrated support for translators and formal social support systems challenged nurses, allied health care providers and settlement workers in their attempts to provide equitable health care and social resources. These structural aspects of community capacity created contexts of increased vulnerability and dependency for Karen women. Capacity-building strategies fostering advocacy, collaborative partnerships, reciprocal support, and flexibility across service sectors (non-government organizations and primary and public health) facilitated community capacity to support the mental health and well-being of Karen women during resettlement. Recommendations are proposed for integrated systems of care that promote social justice and that are culturally safe and trauma- and violence-informed.
Moti e distanze angolari in cielo con telescopio e cronometro
Creators: name: Sigismondi, Costantino
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: A basic telescope and a chronometer can be used to learn classical methods of spherical astronomy. The conjunction Venus-Saturn of July 2, 2007 has been observed through July 3 with a 50 mm telescope. Planetary daily motions and angular distances with respect to Psi Leonis, have been obtained with telescope field of view crossing times with an accuracy of 1 arcminute. In the age of CCD astronomy and planetarium programs for personal computer available to everyone, those are educational occasions to approach 3-D astronomy from real data, self obtained.
description: 4 pages, 4 figures
Extended emission of D2H+ in a prestellar core
Creators: name: Parise, B.
name: Belloche, A.
name: Du, F.
name: Güsten, R.
name: Menten, K. M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context: In the last years, the H2D+ and D2H+ molecules have gained great attention as probes of cold and depleted dense molecular cloud cores. These ions are at the basis of molecular deuterium fractionation, a common characteristic observed in star forming regions. H2D+ is now routinely observed, but the search for its isotopologue D2H+ is still difficult because of the high frequency of its ground para transition (692 GHz). Aims: We have observed molecular transitions of H2D+ and D2H+ in a cold prestellar core to characterize the roots of deuterium chemistry. Methods: Thanks to the sensitive multi-pixel CHAMP+ receiver on the APEX telescope where the required excellent weather conditions are met, we not only successfully detect D2H+ in the H-MM1 prestellar core located in the L1688 cloud, but also obtain information on the spatial extent of its emission. We also detect H2D+ at 372 GHz in the same source. We analyse these detections using a non-LTE radiative transfer code and a state-of-the-art spin-dependent chemical model. Results: This observation is the first secure detection of D2H+ in space. The emission is moreover extended over several pixels of the CHAMP+ array, i.e. on a scale of at least 40'', corresponding to ~ 4800 AU. We derive column densities on the order of 1e12-1e13 cm-2 for both molecules in the LTE approximation depending on the assumed temperature, and up to two orders of magnitude higher based on a non-LTE analysis. Conclusions: Our modeling suggests that the level of CO depletion must be extremely high (>10, and even >100 if the temperature of the core is around 10 K) at the core center, in contradiction with CO depletion levels directly measured in other cores. Observation of the H2D+ spatial distribution and direct measurement of the CO depletion in H-MM1 will be essential to confirm if present chemical models investigating the basis of deuterium [...].
description: 8 pages, 10 figures, accepted for publication in Astronomy and Astrophysics
22-Hydroxyhopane, a novel multitargeted phytocompound against SARS-CoV-2 from Adiantum latifolium Lam
Creators: name: Kumar, R. Pradeep
name: Siddique, Simna
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: The present pandemic disease COVID-19 demands an urgent need for more efficient antiviral drugs against SARS-CoV-2. 22-Hydroxyhopane is a bioactive triterpenoid compound with antibacterial activity, present in the leaves of Adiantum latifolium. In this study, molecular docking method revealed strong binding affinity of the compound for ten proteins essential for SARS-CoV-2 multiplication in host cells, including seven nonstructural proteins, two structural proteins and one receptor protein, with a binding energy of −7.61 to −9.82 kcal/mol and inhibition constant <1 μM. MDS and MM-PBSA analysis of the best ranked complex further confirmed the results. The targets selected include six enzymes, RNA binding protein, spike protein, membrane protein and ACE2 receptor of SARS-CoV-2. It is the first report of a natural compound from A. latifolium having multitargeted activity against SARS-CoV-2. We conclude that 22-hydroxyhopane may be used as a best source for the development of novel therapeutic drugs for COVID-19, but requires further evaluations.
Generalized Geologic Map for Land-Use Planning: Campbell County, Kentucky
Creators: name: Smath, Richard A.
name: Carey, Daniel I.
name: Davidson, Bart
name: Kiefer, John D.
name: Daniels, Ken
Publisher: name: Kentucky Geological Survey, University of Kentucky
Year: 2006

description: Abstract:
This map is not intended to be used for selecting individual sites. Its purpose is to inform land-use planners, government officials, and the public in a general way about geologic bedrock conditions that affect the selection of sites for various purposes. The properties of thick soils may supercede those of the underlying bedrock and should be considered on a site-to-site basis. At any site, it is important to understand the characteristics of both the soils and the underlying rock.