cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Investigation of the Influence of Unmanned Aircraft Takeoff Mass on its In-flight Safety
Creators: name: Jinadu, Abdulbaqi
Publisher: name: figshare
Year: 2023
Subjects: Aircraft performance and flight control systems
Aerospace engineering not elsewhere classified

description: Provision of the in-flight safety for unmanned aircraft vehicles (UAV) brings down the danger of injuries for people and material losses in the case of the aircrash with UAV falling to the ground. One of the important factors ensuring decrease of the catastrophe risk is provision of the strength of UAV carrying structures which may be achieved with decrease of its takeoff mass value.
Witnessing non-Markovianity of quantum evolution
Creators: name: Chruściński, Dariusz
name: Kossakowski, Andrzej
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We provide further characterization of non-Markovian quantum dynamics based on the concept of divisible dynamical maps. In analogy to entanglement witness we propose a non-Markovianity witness and introduce the corresponding measure of non-Markovianity. We also provide characterization of non-Markovianity in terms of entropic quantities, fidelity and Wigner-Yanase-Dyson skew information.
description: 5 pages
Gaussian Equilibration
Creators: name: Venuti, Lorenzo Campos
name: Zanardi, Paolo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A finite quantum system evolving unitarily equilibrates in a probabilistic fashion. In the general many-body setting the time-fluctuations of an observable \mathcal{A} are typically exponentially small in the system size. We consider here quasi-free Fermi systems where the Hamiltonian and observables are quadratic in the Fermi operators. We first prove a novel bound on the temporal fluctuations Δ\mathcal{A}^{2} and then map the equilibration dynamics to a generalized classical XY model in the infinite temperature limit. Using this insight we conjecture that, in most cases, a central limit theorem can be formulated leading to what we call Gaussian equilibration: observables display a Gaussian distribution with relative error Δ\mathcal{A}/\bar{\mathcal{A}}=O(L^{-1/2}) where L is the dimension of the single particle space. The conjecture, corroborated by numerical evidence, is proven analytically under mild assumptions for the magnetization in the quantum XY model and for a class of observables in a tight-binding model. We also show that the variance is discontinuous at the transition between a quasi-free model and a non-integrable one.
description: 5 pages, 1 figure. Added section on integrable-non-integrable transitions
Signal detection for spectroscopy and polarimetry
Creators: name: Ramos, A. Asensio
name: Sainz, R. Manso
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The analysis of high spectral resolution spectroscopic and spectropolarimetric observations constitute a very powerful way of inferring the dynamical, thermodynamical, and magnetic properties of distant objects. However, these techniques are photon-starving, making it difficult to use them for all purposes. One of the problems commonly found is just detecting the presence of a signal that is buried on the noise at the wavelength of some interesting spectral feature. This is specially relevant for spectropolarimetric observations because typically, only a small fraction of the received light is polarized. We present in this note a Bayesian technique for the detection of spectropolarimetric signals. The technique is based on the application of the non-parametric relevance vector machine to the observations, which allows us to compute the evidence for the presence of the signal and compute the more probable signal. The method would be suited for analyzing data from experimental instruments onboard space missions and rockets aiming at detecting spectropolarimetric signals in unexplored regions of the spectrum such as the Chromospheric Lyman-Alpha Spectro-Polarimeter (CLASP) sounding rocket experiment.
description: 10 pages, 5 figures, accepted for publication in A&A
The $K^- d \to πΣn$ reaction revisited
Creators: name: Jido, Daisuke
name: Oset, Eulogio
name: Sekihara, Takayasu
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The appearance of some papers dealing with the $K^- d \to πΣn$ reaction, with some discrepancies in the results and a proposal to measure the reaction at forward $n$ angles at J-PARC justifies to retake the theoretical study with high precision to make accurate predictions for the experiment and extract from there the relevant physical information. We do this in the present paper showing results using the Watson approach and the truncated Faddeev approach. We argue that the Watson approach is more suitable to study the reaction because it takes into account the potential energy of the nucleons forming the deuteron, which is neglected in the truncated Faddeev approach. Predictions for the experiment are done as well as spectra with the integrated neutron angle.
description: 8 pages, 7 figures; a minor correction done
Electronic transport through ferromagnetic and superconducting junctions with spin-filter tunneling barriers
Creators: name: Bergeret, F. S.
name: Verso, A.
name: Volkov, A. F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a theoretical study of the quasiparticle and subgap conductance of generic $X/I_{sf}/S_{M}$ junction with a spin-filter barrier $I_{sf}$, where $X$ is either a normal $N$ or a ferromagnetic metal $F$ and $S_{M}$ is a superconductor with a built-in exchange field. Our study is based on the tunneling Hamiltonian and the Green's function technique. First, we focus on the quasiparticle transport, both above and below the superconducting critical temperature. We obtain a general expression for the tunneling conductance which are valid for arbitrary values of the exchange field and arbitrary magnetization directions in the electrodes and in the spin-filter barrier. In the second part we consider the subgap conductance of a normal metal-superconductor junction with a spin-filter barrier. We provide a heuristic derivation of new boundary conditions for the quasiclassical Green's functions which take into account the spin-filter effect at the interface. With the help of these boundary conditions, we show how the proximity effect and the subgap conductance is suppressed by spin-filtering in a $N/I_{sf}/S$ junction, where $N$ is a normal metal. Our work provides useful tools for the study of spin-polarized transport in hybrid structures both in the normal and the superconducting state.
description: 9 pages; 4 figures, some minor typos are fixed
Turning classroom training into interactive, effective online training on a budget
Creators: name: Marquart, Matthea S.
Publisher: name: Columbia University
Year: 2017
Subjects: Web-based instruction
Social workers--Training of
Employees--Training of

description: Organizations can save money, expand their reach to clients, and build their employees’ skills and engagement by bringing training for clients or staff online.  This workshop will help participants harness technology for social good by converting classroom-based training into online training.

By the end of this workshop, participants should be able to:
Decide whether or not online training is a good fit for your organization;
Describe how to decide what type of online training best fits your organization’s unique circumstances;
Build your professional toolkits with strategies and techniques for converting classroom-based training into online training.

Organizations may face challenges with providing training to small batches of new hires, to seasonal employees with high turnover, to employees who work remotely or in different locations, or to clients who don’t want to travel to the organization’s office.  Classroom-based training in those instances can be expensive and time-intensive.  One way to address these challenges can be to harness technology for social good by bringing training online, where it can be cost-effective, high quality, and potentially available anytime.  Participants will learn how to do this in a way that engages employees or clients, so as to maintain or increase morale while saving money at the same time.
Participatory communication and sustainable national development in Nigeria; an assessment of President Muhamadu Buhari social investment programme in Cross River State
Creators: name: Obi, Anthony
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 360504
subject: Interactive media
classificationCode: 470107
subject: Media studies
classificationCode: 440701
subject: Communications and media policy

description: The paper sought to examine participatory communication and sustainable national development in Nigeria: An Assessment of President Mohammadu Buhari social investment programme in Cross River State. The paper employed development theory as a theoretical framework to back up its views. The paper revealed that the distinguishing aspect of Buhari empowerment or social investment programme is that the programme is made open to everyone that is interested. The selection process of beneficiaries received accolades from public because it was made free and fair devoid of partiality compare to Sure-P and graduate internship scheme (GIS) which bordered on nepotism, favoritism and corruption. The paper concluded that...
Dynamical evolution and spin-orbit resonances of potentially habitable exoplanets. The case of GJ 581d
Creators: name: Makarov, Valeri V.
name: Berghea, Ciprian
name: Efroimsky, Michael
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: GJ 581d is a potentially habitable super-Earth in the multiple system of exoplanets orbiting a nearby M dwarf. We investigate this planet's long-term dynamics, with an emphasis on its probable final rotation states acquired via tidal interaction with the host. The published radial velocities for the star are re-analysed with a benchmark planet detection algorithm, to confirm that there is no evidence for the recently proposed two additional planets (f and g). Limiting the scope to the four originally detected planets, we assess the dynamical stability of the system and find bounded chaos in the orbital motion. For the planet d, the characteristic Lyapunov time is 38 yr. Long-term numerical integration reveals that the system of four planets is stable, with the eccentricity of the planet d changing quasi-periodically in a tight range around 0.27, and with its semimajor axis varying only a little. The spin-orbit interaction of GJ 581d with its host star is dominated by the tides exerted by the star on the planet. We model this interaction, assuming a terrestrial composition of the mantle. Besides the customarily included secular parts of the triaxiality-caused and tidal torques, we also include these torques' oscillating components. It turns out that, dependent on the mantle temperature, the planet gets trapped into the 2:1 or an even higher spin-orbit resonance. It is very improbable that the planet could have reached the 1:1 resonance. This enhances the possibility of the planet being suitable for sustained life.
Yang-Mills-Higgs models with higher order derivatives
Creators: name: Polonyi, Janos
name: Siwek, Alicja
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Models with higher order derivative terms in the kinetic energy appear not only as effective theories, they can be considered as elementary, renormalizable models in their own right. The extension of Higgs mechanism is discussed for Yang-Mills-Higgs models where the kinetic energy of the scalar field contains higher order derivatives. The connection term of the covariant derivatives generates a local potential for the gauge field in the phase with spontaneously broken global gauge symmetry which may break Lorentz symmetry in the vacuum. Relativistic, massless gauge bosons spectrum is found for small fluctuations where the only remnant of the breakdown of the Lorentz symmetry is a shift of the energy induced by the expectation value of the temporal component of the gauge field, reminiscent of a chemical potential.
description: 15 pages, no figures
Growth process and crystallographic properties of ammonia-induced vaterite
Creators: name: Hu, Qiaona
name: Zhang, Jiaming
name: Teng, Henry
name: Becker, Udo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences
subject: 92Fxx

description: Metastable vaterite crystals were synthesized by increasing the pH and consequently the saturation states of Ca and CO3 containing solutions using an ammonia diffusion method. SEM and TEM analyses indicate that vaterite grains produced by this method are polycrystalline aggregates with a final morphology that has a sixfold-symmetry. The primary structure develops within an hour and is almost a spherical assemblage of nanoparticles (5 to 10 nm) with random orientation, followed by the formation of hexagonal platelets (1 to 2um), which are first composed of nanoparticles and that develop further into single crystals. As determined using transmission electron microscopy, these hexagonal crystallites are terminated by (001) surfaces and are bounded by 110 edges. The hexagonal crystals subsequently stack to form the petals (20um wide, 1um thick) of the final flower-like vaterite morphology. The large flakes gradually tilt toward the center as growth progresses so that their positions become more and more vertical, which eventually leads to a depression in the center. Since this sequence encompasses several morphologies observed in previous studies (spheres, hexagons, flowers etc), they may actually represent different stages of growth rather than equilibrium morphologies for specific growth conditions
description: 9 pages, 10 figures
Scaling laws in spherical shell dynamos with free-slip boundaries
Creators: name: Yadav, Rakesh K.
name: Gastine, Thomas
name: Christensen, Ulrich R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Numerical simulations of convection driven rotating spherical shell dynamos have often been performed with rigid boundary conditions, as is appropriate for the metallic cores of terrestrial planets. Free-slip boundaries are more appropriate for dynamos in other astrophysical objects, such as gas-giants or stars. Using a set of 57 direct numerical simulations, we investigate the effect of free-slip boundary conditions on the scaling properties of heat flow, flow velocity and magnetic field strength and compare it with earlier results for rigid boundaries. We find that the nature of the mechanical boundary condition has only a minor influence on the scaling laws. We also find that although dipolar and multipolar dynamos exhibit approximately the same scaling exponents, there is an offset in the scaling pre-factors for velocity and magnetic field strength. We argue that the offset can be attributed to the differences in the zonal flow contribution between dipolar and multipolar dynamos.
description: 10 pages, 9 figures, 1 table. To appear in ICARUS
NEAT: a space born astrometric mission for the detection and characterization of nearby habitable planetary systems
Creators: name: Malbet, Fabien
name: Goullioud, Renaud
name: Lagage, Pierre-Olivier
name: Léger, Alain
name: Shao, Mike
name: Crouzier, Antoine
name: Consortium, the NEAT
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The NEAT (Nearby Earth Astrometric Telescope) mission is a proposal submitted to ESA for its 2010 call for M-size mission within the Cosmic Vision 2015-2025 plan. The main scientific goal of the NEAT mission is to detect and characterize planetary systems in an exhaustive way down to 1 Earth mass in the habitable zone and further away, around nearby stars for F, G, and K spectral types. This survey would provide the actual planetary masses, the full characterization of the orbits including their inclination, for all the components of the planetary system down to that mass limit. NEAT will continue the work performed by Hipparcos and Gaia by reaching a precision that is improved by two orders of magnitude on pointed targets.
description: 17 pages, in SPIE 2012 symposium in "Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave" SPIE Conference 8442, 16
Dynamics of spontaneous emission in a single-end photonic waveguide
Creators: name: Tufarelli, T.
name: Ciccarello, F.
name: Kim, M. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the spontaneous emission of a two-level system, e.g. an atom or atomlike object, coupled to a single-end, i.e., semi-infinite, one-dimensional photonic waveguide such that one end behaves as a perfect mirror while light can pass through the opposite end with no back-reflection. Through a quantum microscopic model we show that such geometry can cause non-exponential and long-lived atomic decay. Under suitable conditions, a bound atom-photon stationary state appears in the atom-mirror interspace so as to trap a considerable amount of initial atomic excitation. Yet, this can be released by applying an atomic frequency shift causing a revival of photon emission. The resilience of such effects to typical detrimental factors is analyzed.
description: 6 pages, 4 figures
Atom lens without chromatic aberrations
Creators: name: Efremov, Maxim A.
name: Mironova, Polina V.
name: Schleich, Wolfgang P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a lens for atoms with reduced chromatic aberrations and calculate its focal length and spot size. In our scheme a two-level atom interacts with a near-resonant standing light wave formed by two running waves of slightly different wave vectors, and a far-detuned running wave propagating perpendicular to the standing wave. We show that within the Raman-Nath approximation and for an adiabatically slow atom-light interaction, the phase acquired by the atom is independent of the incident atomic velocity.
description: 5 pages, one figure
Finding the Right Solvent: A Novel Screening Protocol for Identifying Environmentally Friendly and Cost-Effective Options for Benzenesulfonamide
Creators: name: Cysewski, Piotr
name: Jeliński, Tomasz
name: Przybyłek, Maciej
Publisher: name: figshare
Year: 2023
Subjects: Chemical thermodynamics and energetics
Solution chemistry
Physical chemistry not elsewhere classified

description: This study investigated the solubility of benzenesulfonamide (BSA) as a model compound using experimental and computational methods. New experimental solubility data were collected in the solvents DMSO, DMF, 4FM, and their binary mixtures with water. The predictive model was constructed based on the best-performing regression models trained on available experimental data, and their hyperparameters were optimized using a newly developed Python code. To evaluate the models, a novel scoring function was formulated, considering not only the accuracy but also the bias–variance tradeoff through a learning curve analysis. An ensemble approach was adopted by selecting the top-performing regression models for test and validation subsets. The obtained model accurately back-calculated the experimental data and was used to predict the solubility of BSA in 2067 potential solvents. The analysis of the entire solvent space focused on the identification of solvents with high solubility, a low environmental impact, and affordability, leading to a refined list of potential candidates that meet all three requirements. The proposed procedure has general applicability and can significantly improve the quality and speed of experimental solvent screening.
Brane matter, hidden or mirror matter, their various avatars and mixings: many faces of the same physics
Creators: name: Sarrazin, Michael
name: Petit, Fabrice
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Numerous papers deal with the phenomenology related to photon-hidden photon kinetic mixing and with the effects of a mass mixing on particle-hidden particle oscillations. In addition, recent papers underline the existence of a geometrical mixing between branes which would allow a matter swapping between branes. These approaches and their phenomenologies are reminiscent of each other but rely on different physical concepts. In the present paper, we suggest there is no rivalry between these models, which are probably many faces of the same physics. We discuss some phenomenological consequences of a global framework.
description: 9 pages. Typo corrected. Published in European Physical Journal C
Bootstrapping topology and systemic risk of complex network using the fitness model
Creators: name: Musmeci, Nicoló
name: Battiston, Stefano
name: Caldarelli, Guido
name: Puliga, Michelangelo
name: Gabrielli, Andrea
Publisher: name: arXiv
Year: 2012
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: General Finance (q-fin.GN)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: We present a novel method to reconstruct complex network from partial information. We assume to know the links only for a subset of the nodes and to know some non-topological quantity (fitness) characterising every node. The missing links are generated on the basis of the latter quan- tity according to a fitness model calibrated on the subset of nodes for which links are known. We measure the quality of the reconstruction of several topological properties, such as the network density and the degree distri- bution as a function of the size of the initial subset of nodes. Moreover, we also study the resilience of the network to distress propagation. We first test the method on ensembles of synthetic networks generated with the Exponential Random Graph model which allows to apply common tools from statistical mechanics. We then test it on the empirical case of the World Trade Web. In both cases, we find that a subset of 10 % of nodes is enough to reconstruct the main features of the network along with its resilience with an error of 5%.
description: 17 pages, 3 figures
D3.4 - Comparative study on GW data
Creators: name: Stavros Katsanevas
name: Massimiliano Razzano
name: Francesco Di Renzo
name: Francesco Fidecaro
name: Gary Hemming
Publisher: name: Zenodo
Year: 2022

description: This report describes the REINFORCE Deliverable D3.4 “Comparative Study on GW data”. The document discusses the results of the performance of citizen scientist contributions and the comparison with machine learning, using the data collected by the WP3 GWitchHunters demonstrator (See D3.3). This deliverable document will contribute to the REINFORCE Roadmap documentation and the expected benefits from the citizen science projects.
Chiral Symmetry Breaking, Deconfinement and Entanglement Monotonicity
Creators: name: Grover, Tarun
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We employ the recent results on the generalization of the $c$-theorem to 2+1-d to derive non-perturbative results for strongly interacting quantum field theories, including QED-3 and the critical theory corresponding to certain quantum phase transitions in condensed matter systems. In particular, by demanding that the universal constant part of the entanglement entropy decreases along the renormalization group flow ("F-theorem"), we find bounds on the number of flavors of fermions required for the stability of QED-3 against chiral symmetry breaking and confinement. In this context, the exact results known for the entanglement of superconformal field theories turn out to be quite useful. Furthermore, the universal number corresponding to the ratio of the entanglement entropy of a free Dirac fermion to that of free scalar plays an interesting role in the bounds derived. Using similar ideas, we also derive strong constraints on the nature of quantum critical points in condensed matter systems with "topological order".
description: 6 pages, 1 figure. A new section added that employs supersymmetry to derive constraints on the non-supersymmetric QED-3. Section IIA rewritten to clarify assumptions in the first version
Reliable estimation of the column density in Smoothed Particle Hydrodynamic simulations
Creators: name: Young, Matthew D.
name: Bertram, Erik
name: Moeckel, Nick
name: Clarke, Cathie J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We describe a simple method for estimating the vertical column density in Smoothed Particle Hydrodynamics (SPH) simulations of discs. As in the method of Stamatellos et al. (2007), the column density is estimated using pre-computed local quantities and is then used to estimate the radiative cooling rate. The cooling rate is a quantity of considerable importance, for example, in assessing the probability of disc fragmentation. Our method has three steps: (i) the column density from the particle to the mid plane is estimated using the vertical component of the gravitational acceleration, (ii) the "total surface density" from the mid plane to the surface of the disc is calculated, (iii) the column density from each particle to the surface is calculated from the difference between (i) and (ii). This method is shown to greatly improve the accuracy of column density estimates in disc geometry compared with the method of Stamatellos. On the other hand, although the accuracy of our method is still acceptable in the case of high density fragments formed within discs, we find that the Stamatellos method performs better than our method in this regime. Thus, a hybrid method (where the method is switched in regions of large over-density) may be optimal.
description: Accepted for publication in MNRAS. 13 pages, 21 figures and 1 table
$L^p$ spectral multipliers on the free group $N_{3,2}$
Creators: name: Martini, Alessio
name: Müller, Detlef
Publisher: name: arXiv
Year: 2012
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 43A85, 42B15

description: Let $L$ be the homogeneous sublaplacian on the 6-dimensional free 2-step nilpotent group $N_{3,2}$ on 3 generators. We prove a theorem of Mihlin-Hörmander type for the functional calculus of $L$, where the order of differentiability $s > 6/2$ is required on the multiplier.
LOOKING BACK AND LOOKING FORWARD: AN EXAMINATION OF POSITIVE PSYCHOLOGY
Creators: name: Divya
Publisher: name: Zenodo
Year: 2023

description: Looking back is essential if positive psychology (PP) is to have a prosperous future. First, I will go through some of the criticisms that have already been levelled against PP, pointing out how some of the original issues are still relevant today. Then, I focus on a subset of the most recent studies to highlight specific developments and ongoing issues. Some of the most important of these is the widespread use of unreliable indicators of happiness and the over-reliance on skewed study populations. The commercialisation of PP raises additional issues, including the need for stricter regulation and quality monitoring of for-profit activities. I think it is essential for future research to be directly related to pressing issues of our day, such as the expanding income gap and the spread of disease. These are overlapping disasters that need scientific investigation. Such issues highlight "neglected negatives" that may be causing existing concerns, such as greed, apathy, and ignorance. Anger, which cannot be reduced to a simple good or negative evaluation, should also get more attention from the scientific community. Going ahead, I call for further research into areas already being investigated yet likely to foster healthy lives and equitable communities, such as exposure to the arts and natural experiences. More generally, I would want to see PP address long-standing issues from its history and work toward a societally relevant and admirable future.
Bound States of Conical Singularities in Graphene-Based Topological Insulators
Creators: name: Rüegg, Andreas
name: Lin, Chungwei
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the electronic structure induced by wedge-disclinations (conical singularities) in a honeycomb lattice model realizing Chern numbers $γ=\pm 1$. We establish a correspondence between the bound state of (i) an isolated $Φ_0/2$-flux, (ii) an isolated pentagon $(n=1)$ or heptagon $(n=-1)$ defect with an external flux of magnitude $nγΦ_0/4$ through the center and (iii) an isolated square or octagon defect without external flux, where $Φ_0=h/e$ is the flux quantum. Due to the above correspondence, the existence of isolated electronic states bound to the disclinations is robust against various perturbations. These results are also generalized to graphene-based time-reversal invariant topological insulators.
description: 5+4 pages, 4+3 figures, revised introduction and Fig. 4
Baryon Stopping as a Probe of Deconfinement Onset in Relativistic Heavy-Ion Collisions
Creators: name: Ivanov, Yu. B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: It is argued that an irregularity in the baryon stopping is a natural consequence of a phase transition occurring in the compression stage of a nuclear collision. It is a combined effect of the softest point inherent in an equation of state (EoS) with a phase transition and a change in the nonequilibrium dynamics from hadronic to partonic transport. Thus, this irregularity is a signal from a hot and dense stage of the nuclear collision. In order to illustrate this proposition, calculations within the three-fluid model were performed with three different EoS's: a purely hadronic EoS, an EoS with a first-order phase transition and that with a smooth crossover transition. It is found that predictions within the first-order-transition scenario indeed reveal an a strong irregularity in the incident energy dependence of the form of the net-proton rapidity distributions in central collisions. This behavior is in contrast to that for the hadronic scenario, where the distribution form gradually evolve, displaying no irregularity. The case of the crossover EoS is intermediate. Only a weak irregularity takes place. Experimental data also exhibit a trend of similar irregularity, which is however based on still preliminary data at energies of 20A GeV and 30A GeV.
description: 9 pages, 9 figures, references added, discussion extended, version accepted by Phys. Lett. B
The Income Inequality by Opportunity in the U.S. and its Roots
Creators: name: Song, Yujiao
Publisher: name: University of Chicago
Year: 2021

description: Income inequality in the United States had reached its peak level in 50 years, and it is still growing Setting aside the scathing critique from the humanitarian and social justice sphere on severe inequality, a line of research corroborates the negative impact of income inequality on economic growth. This negative relationship is conspicuous when income inequality is entailed by inequality of opportunity instead of individuals’ efforts. In light of this view, this research adopt Roemer’s conception of inequality of opportunity to differentiate the causes of income inequality by social circumstances and individuals’ effort. I assess the social circumstances that contribute to the current income inequality in the U.S. by utilizing the conditional inference tree method. After analyzing the structure of income inequality in the U.S. by deriving a regression tree, I elaborate the heterogeneity of inequality of opportunity across U.S. states and age groups by comparing trees across subgroups and estimating the opportunity-base Gini-coefficient measuring income inequality associated with social circumstances. The results suggest that race and ethnicity are the most dominant circumstance factors at country level analysis. Furthermore, at state level analysis, there exist heterogeneous characteristics based on the spatial allocation of the states. Lastly, this analysis did not detect a significant differences of the structure of the income inequality among different age groups.
Clustering, Bias and the Accretion Mode of X-ray selected AGN
Creators: name: Koutoulidis, L.
name: Plionis, M.
name: Georgantopoulos, I.
name: Fanidakis, N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the spatial clustering properties of 1466 X-ray selected AGN compiled from the Chandra CDF-N, CDF-S, eCDF-S, COSMOS and AEGIS fields in the 0.5-8 keV band. The X-ray sources span the redshift interval 0
description: to appear in MNRAS
Nanoscale broadband transmission lines for spin qubit control
Creators: name: Dehollain, J. P.
name: Pla, J. J.
name: Siew, E.
name: Tan, K. Y.
name: Dzurak, A. S.
name: Morello, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The intense interest in spin-based quantum information processing has caused an increasing overlap between two traditionally distinct disciplines, such as magnetic resonance and nanotechnology. In this work we discuss rigourous design guidelines to integrate microwave circuits with charge-sensitive nanostructures, and describe how to simulate such structures accurately and efficiently. We present a new design for an on-chip, broadband, nanoscale microwave line that optimizes the magnetic field driving a spin qubit, while minimizing the disturbance on a nearby charge sensor. This new structure was successfully employed in a single-spin qubit experiment, and shows that the simulations accurately predict the magnetic field values even at frequencies as high as 30 GHz.
description: 18 pages, 8 figures, 1 table, pdflatex
The dynamics of non-structural carbohydrates and involved enzymes in relation to the latex yield of rubber trees
Creators: name: Tucksin Lerksamran
Publisher: name: Asia-Pacific Journal of Science and Technology
Year: 2023
Subjects: Non-structural carbohydrates (NSCs), Enzyme activities, Latex yield, Hevea brasiliensis Muell. Arg.,Tapping methods

description: Asia-Pacific Journal of Science and Technology, 28, 6, 12
Growth performance and fruiting body characterisation of the paddy straw mushroom (Volvariella volvacea) cultivated on different types of solid wastes
Creators: name: Lyena W.Z. Ahmad
Publisher: name: Asia-Pacific Journal of Science and Technology
Year: 2023
Subjects: Biological efficiency, Solid wastes, Growth substrate, Volvariella volvacea

description: Asia-Pacific Journal of Science and Technology, 28, 6, 7
Gate-induced Dirac cones in multilayer graphenes
Creators: name: Morimoto, Takahiro
name: Koshino, Mikito
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the electronic structures of ABA (Bernal) stacked multilayer graphenes in uniform perpendicular electric field, and show that the interplay of the trigonal warping and the potential asymmetry gives rise to a number of emergent Dirac cones nearly touching at zero energy. The band velocity and the energy region (typically a few tens of meV) of these gate-induced Dirac cones are tunable with the external electric field. In ABA trilayer graphene, in particular, applying an electric field induces a non-trivial valley Hall state, where the energy gap at the Dirac point is filled by chiral edge modes which propagate in opposite directions between two valleys. In four-layer graphene, in contrast, the valley Hall conductivity is zero and there are no edge modes filling in the gap. A nontrivial valley Hall state generally occurs in asymmetric odd layer graphenes and this is closely related to a hidden chiral symmetry which exists only in odd layer graphenes.
description: 13 pages, 7 figures
Transverse kink oscillations in the presence of twist
Creators: name: Terradas, J.
name: Goossens, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Magnetic twist is thought to play an important role in coronal loops. The effects of magnetic twist on stable magnetohydrodynamic (MHD) waves is poorly understood because they are seldom studied for relevant cases. The goal of this work is to study the fingerprints of magnetic twist on stable transverse kink oscillations. We numerically calculated the eigenmodes of propagating and standing MHD waves for a model of a loop with magnetic twist. The azimuthal component of the magnetic field was assumed to be small in comparison to the longitudinal component. We did not consider resonantly damped modes or kink instabilities in our analysis. For a nonconstant twist the frequencies of the MHD wave modes are split, which has important consequences for standing waves. This is different from the degenerated situation for equilibrium models with constant twist, which are characterised by an azimuthal component of the magnetic field that linearly increases with the radial coordinate. In the presence of twist standing kink solutions are characterised by a change in polarisation of the transverse displacement along the tube. For weak twist, and in the thin tube approximation, the frequency of standing modes is unaltered and the tube oscillates at the kink speed of the corresponding straight tube. The change in polarisation is linearly proportional to the degree of twist. This has implications with regard to observations of kink modes, since the detection of this variation in polarisation can be used as an indirect method to estimate the twist in oscillating loops.
Effects of partially replacing sand with laterite on compressive strength of hybrid OPC -activated metakaolin concrete
Creators: name: Feyidamilola Faluyi
Publisher: name: Asia-Pacific Journal of Science and Technology
Year: 2023
Subjects: Laterized concrete, Compressive strength, Activated metakaolin, Hybrid concrete

description: Asia-Pacific Journal of Science and Technology, 28, 6, 10
Ergonomic risk factor-related musculoskeletal disorders among wood furniture workers in Binh Duong Province, Vietnam
Creators: name: Teeraphun Kaewdok
Publisher: name: Asia-Pacific Journal of Science and Technology
Year: 2023
Subjects: Ergonomics, Furniture factory, Musculoskeletal disorders, Vietnam, Working posture

description: Asia-Pacific Journal of Science and Technology, 28, 6, 10
Testing 3+1 and 3+2 neutrino mass models with cosmology and short baseline experiments
Creators: name: Archidiacono, Maria
name: Fornengo, Nicolao
name: Giunti, Carlo
name: Melchiorri, Alessandro
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recent results from short--baseline neutrino oscillation experiments and Cosmic Microwave Background anisotropy measurements suggest the presence of additional sterile neutrinos. In this paper we properly combine these data sets to derive bounds on the sterile neutrino masses in the 3+1 and 3+2 frameworks, finding a potentially good agreement between the two datasets. However, when galaxy clustering is included in the analysis a tension between the oscillation and cosmological data is clearly present.
Late Holocene sea-level changes and vertical land movements in New Zealand
Creators: name: King, Daniel
name: Newnham, RM
name: Gehrels, WR
name: Clark, KJ
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: subject: 40699 Physical Geography and Environmental Geoscience not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Geology
subject: Geophysics

description: Coasts in tectonically active regions face varying threat levels as land subsides or uplifts relative to rising sea levels. We review the processes influencing relative sea-level change in New Zealand, and the geological context behind ongoing land movements, focussing on major population centres. Whilst Holocene sea levels have been reconstructed using a variety of techniques, recent work uses salt-marsh microfossil assemblages to reconstruct relative sea-level changes over the past few centuries. For the twentieth century, these proxy-based studies often show enhanced rates of sea-level rise relative to tide-gauge observations. The effects of tectonic subsidence must be considered, alongside vertical and dating uncertainties in the sea-level reconstructions. Global Positioning Systems (GPS) observations for the past few decades show that vertical land movement (VLM) may be influencing rates of relative sea-level rise. However, the short period of GPS observations, during which trends and rates have varied at some localities, raises questions over the longer-term contribution of VLM to sea-level change over the past few centuries and for future projections. We argue that high-resolution palaeo-sea-level reconstructions from salt-marsh sedimentary sequences can help to answer these questions regarding the interplay between sea-level change and VLM at key locations.
Augusteische Terra Sigillata aus Bregenz
Creators: name: Konrad, Michaela
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: -
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 67 Nr. 2 (1989)
Correlations between isospin dynamics and Intermediate Mass Fragments emission time scales: a probe for the symmetry energy in asymmetric nuclear matter
Creators: name: De Filippo, E.
name: Amorini, F.
name: Auditore, L.
name: Baran, V.
name: Berceanu, I.
name: Cardella, G.
name: Colonna, M.
name: Geraci, E.
name: Gianì, S.
name: Grassi, L.
name: Grzeszczuk, A.
name: Guazzoni, P.
name: Han, J.
name: La Guidara, E.
name: Lanzalone, G.
name: Lombardo, I.
name: Maiolino, C.
name: Minniti, T.
name: Pagano, A.
name: Papa, M.
name: Piasecki, E.
name: Pirrone, S.
name: Politi, G.
name: Pop, A.
name: Porto, F.
name: Rizzo, F.
name: Russotto, P.
name: Santoro, S.
name: Trifirò, A.
name: Trimarchi, M.
name: Verde, G.
name: Vigilante, M.
name: Wilczyński, J.
name: Zetta, L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We show new data from the $^{64}$Ni+$^{124}$Sn and $^{58}$Ni+$^{112}$Sn reactions studied in direct kinematics with the CHIMERA detector at INFN-LNS and compared with the reverse kinematics reactions at the same incident beam energy (35 A MeV). Analyzing the data with the method of relative velocity correlations, fragments coming from statistical decay of an excited projectile-like (PLF) or target-like (TLF) fragments are discriminated from the ones coming from dynamical emission in the early stages of the reaction. By comparing data of the reverse kinematics experiment with a stochastic mean field (SMF) + GEMINI calculations our results show that observables from neck fragmentation mechanism add valuable constraints on the density dependence of symmetry energy. An indication is found for a moderately stiff symmetry energy potential term of EOS.
description: Talk given by E. De Filippo at the 11th International Conference on Nucleus-Nucleus Collisions (NN2012), San Antonio, Texas, USA, May 27-June 1, 2012. To appear in the NN2012 Proceedings in Journal of Physics: Conference Series (JPCS)
Vacuum Stability of Standard Model^{++}
Creators: name: Anchordoqui, Luis A.
name: Antoniadis, Ignatios
name: Goldberg, Haim
name: Huang, Xing
name: Lust, Dieter
name: Taylor, Tomasz R.
name: Vlcek, Brian
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The latest results of the ATLAS and CMS experiments point to a preferred narrow Higgs mass range (m_h \simeq 124 - 126 GeV) in which the effective potential of the Standard Model (SM) develops a vacuum instability at a scale 10^{9} -10^{11} GeV, with the precise scale depending on the precise value of the top quark mass and the strong coupling constant. Motivated by this experimental situation, we present here a detailed investigation about the stability of the SM^{++} vacuum, which is characterized by a simple extension of the SM obtained by adding to the scalar sector a complex SU(2) singlet that has the quantum numbers of the right-handed neutrino, H", and to the gauge sector an U(1) that is broken by the vacuum expectation value of H". We derive the complete set of renormalization group equations at one loop. We then pursue a numerical study of the system to determine the triviality and vacuum stability bounds, using a scan of 10^4 random set of points to fix the initial conditions. We show that, if there is no mixing in the scalar sector, the top Yukawa coupling drives the quartic Higgs coupling to negative values in the ultraviolet and, as for the SM, the effective potential develops an instability below the Planck scale. However, for a mixing angle -0.35 \alt α\alt -0.02 or 0.01 \alt α\alt 0.35, with the new scalar mass in the range 500 GeV \alt m_{h"} \alt 8 TeV, the SM^{++} ground state can be absolutely stable up to the Planck scale. These results are largely independent of TeV-scale free parameters in the model: the mass of the non-anomalous U(1) gauge boson and its branching fractions.
description: 17 revtex pages, 8 figures; to be published in JHEP
Data Mining Based Technique for IDS Alerts Classification
Creators: name: Gabra, Hany N.
name: Bahaa-Eldin, Ayman M.
name: Mohamed, Hoda K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Intrusion detection systems (IDSs) have become a widely used measure for security systems. The main problem for those systems results is the irrelevant alerts on those results. We will propose a data mining based method for classification to distinguish serious alerts and irrelevant one with a performance of 99.9% which is better in comparison with the other recent data mining methods that have reached the performance of 97%. A ranked alerts list also created according to alerts importance to minimize human interventions.