cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Ferromagnetic Potts model under an external magnetic field: an exact renormalization group approach
Creators: name: Coutinho, Sergio
name: Morgado, Welles A. M.
name: Curado, Evaldo M. F.
name: da Silva, Ladario
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The q-state ferromagnetic Potts model under a non-zero magnetic field coupled with the 0^th Potts state was investigated by an exact real-space renormalization group approach. The model was defined on a family of diamond hierarchical lattices of several fractal dimensions d_F. On these lattices, the renormalization group transformations became exact for such a model when a correlation coupling that singles out the 0^th Potts state was included in the Hamiltonian. The rich criticality presented by the model with q=3 and d_F=2 was fully analyzed. Apart from the Potts criticality for the zero field, an Ising-like phase transition was found whenever the system was submitted to a strong reverse magnetic field. Unusual characteristics such as cusps and dimensional reduction were observed on the critical surface.
description: 8 pages, 6 figures. Accepted to be published in Phys. Rev B (2006)
Impact of ground heat exchanger use on energy usage, an analysis
Creators: name: Dheya Ghanim Mutasher*
Publisher: name: Zenodo
Year: 2025
Subjects: Air conditioners; condenser; under-ground; Ground Coil Heat Exchanger; Earth Air Heat Exchanger; Ground Source Heat Pump.

description: Abstract: Earth is at great danger from likely to have been caused by clastic human activities of climate change and environmental pollution. In addition to burning huge quantities of fossil fuels to generate electricity, these greenhouse gases caused the burning due to the emission of greenhouse gases, creating climate change in addition to environmental pollutants that harm people, animals, plants, and even buildings. It turns out that several researchers have studied its possibility in using clean and green renewable energy to reduce the dependence on the use of fossil fuels. Some others thought that reducing electricity consumption would reduce this dependence. Unsatisfied with these reports, studies, and reports of international organizations have demonstrated that up to 45% of electricity is used in buildings for cooling and heating for comfort purposes. In this review study, reducing the consumption of traditional air conditioners through burying condensate in the ground will be reviewed as the number of studies regarding how to reduce electricity consumption. The study was submitted for checking experimental and practical studies in this field. As a result, researchers’ results indicate that Ground Coil Heat Exchanger systems can improve and enhance the operation of air conditioning systems and reduce the cost. When adopting such systems, the emission of pollutants formed because of fuel burning is reduced. They are such systems that can be used in Iraq, and they are better used where the temperature of land does not fluctuate.
Additional file 1 of A case of Wilson’s disease combined with intracranial lipoma and dysplasia of the corpus callosum with review of the literature
Creators: name: Zhang, Liangjie
name: Zhu, Ling
name: Ci, Chunling
name: Ai, Wenlong
name: Wang, Yu
name: Wang, Xun
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
subject: Pharmacology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Virology

description: Additional file 1.
Momentum transfer dependence of the hadron GPDs and Compton form factors
Creators: name: Selyugin, O. V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The generalized parton distributions (GPDs) of the meson and nucleon at small and large values of the momentum transfer were determined on the basis of the comparative analysis of different sets of experimental data of electromagnetic form factors of the proton and neutron, using the different sets of the parton distribution functions (PDFs). As a result, different form factors of the nucleons and meson were calculated. The t-dependence of these form factors was checked up in the description of the nucleon-nucleon and meson-nucleon elastic scattering and the differential cross sections of the real Compton scattering.
description: 6 pages; 8 figures; Talk on the XVII Workshop "High Energy Spin Physics - DSPIN-17", Dubna, Russis, September 11-15 (2017)
Rigorous estimates for the relegation algorithm
Creators: name: Sansottera, Marco
name: Ceccaroni, Marta
Publisher: name: arXiv
Year: 2017
Subjects: subject: Dynamical Systems (math.DS)
subject: Mathematical Physics (math-ph)
subject: Classical Physics (physics.class-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We revisit the relegation algorithm by Deprit et al. (Celest. Mech. Dyn. Astron. 79:157-182, 2001) in the light of the rigorous Nekhoroshev's like theory. This relatively recent algorithm is nowadays widely used for implementing closed form analytic perturbation theories, as it generalises the classical Birkhoff normalisation algorithm. The algorithm, here briefly explained by means of Lie transformations, has been so far introduced and used in a formal way, i.e. without providing any rigorous convergence or asymptotic estimates. The overall aim of this paper is to find such quantitative estimates and to show how the results about stability over exponentially long times can be recovered in a simple and effective way, at least in the non-resonant case.
A note on Polyakov's nonlocal form of the effective action
Creators: name: Dowker, J. S.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A technical point regarding the invariance of Polyakov's nonlocal form of the effective action under uniform rescalings is briefly addressed.
description: 4 pages, Plain TeX,MUTP/93/22
Determination of Combining Ability for Yield and Yield Related Traits in Super Sweet Corn Lines Based on Line x Tester Method
Creators: name: Bhornchai Harakotr
Publisher: name: Thammasat University
Year: 2020
Subjects: general combining ability
tester
plant breeding
Zea mays

description: Thai Journal of Science and Technology, 9, 6, 799-810
Additional file 1: of Operational assessment of point-of-care diagnostics in rural primary healthcare clinics of KwaZulu-Natal, South Africa: a cross-sectional survey
Creators: name: T. Mashamba-Thompson
name: B. Sartorius
name: P. Drain
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Molecular Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Survey tool for POC diagnostic in rural KwaZulu-Natal, adapted from Howick et al. 2014, and the World Organization of Family Doctors (WONCA) special interest group for global point-of-care testing online survey. (DOCX 29 kb)
Quantifying microbubble clustering in turbulent flow from single-point measurements
Creators: name: Calzavarini, Enrico
name: Berg, Thomas H. van den
name: Toschi, Federico
name: Lohse, Detlef
Publisher: name: arXiv
Year: 2006
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Single-point hot-wire measurements in the bulk of a turbulent channel have been performed in order to detect and quantify the phenomenon of preferential bubble accumulation. We show that statistical analysis of the bubble-probe colliding-times series can give a robust method for investigation of clustering in the bulk regions of a turbulent flow where, due to the opacity of the flow, no imaging technique can be employed. We demonstrate that micro-bubbles (radius R_0 ~ 0.1 mm) in a developed turbulent flow, where the Kolmogorov length-scale is, eta ~ R_0, display preferential concentration in small scale structures with a typical statistical signature ranging from the dissipative range, O(eta), up to the low inertial range, O(100 eta). A comparison with Eulerian-Lagrangian numeri- cal simulations is also presented to further support our proposed way to characterize clustering from temporal time series at a fixed position.
description: 7 pages, 4 figures
Effects of turbine spacing on the power output of extended wind-farms
Creators: name: Stevens, Richard J. A. M.
name: Gayme, Dennice F.
name: Meneveau, Charles
Publisher: name: arXiv
Year: 2017
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present results from large eddy simulations (LES) of extended wind-farms for several turbine configurations with a range of different spanwise and streamwise spacing combinations. The results show that for wind-farms arranged in a staggered configuration with spanwise spacings in the range $\approx[3.5,8]$D, where $D$ is the turbine diameter, the power output in the fully developed regime depends primarily on the geometric mean of the spanwise and streamwise turbine spacings. In contrast, for the aligned configuration the power output in the fully developed regime strongly depends on the streamwise turbine spacing and shows weak dependence on the spanwise spacing. Of interest to the rate of wake recovery, we find that the power output is well correlated with the vertical kinetic energy flux, which is a measure of how much kinetic energy is transferred into the wind-turbine region by the mean flow. A comparison between the aligned and staggered configurations reveals that the vertical kinetic energy flux is more localized along turbine rows for aligned wind-farms than for staggered ones. This additional mixing leads to a relatively fast wake recovery for aligned wind-farms.
description: 12 pages, 8 figures
Electrostatic Friction Force on an AFM probe Moving Near a Sample Surface
Creators: name: Dedkov, G. V.
name: Kanametov, A. A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Within the framework of nonrelativistic electrodynamics, general formulas have been obtained for the tangential dissipative force of electrostatic friction and the normal force of attraction to the surface of an axially symmetric probe moving parallel to the smooth surface of homogeneous materials or coated with thin films substrates with various combinations of materials. As a numerical example, the interaction of a metal ball moving above a metal surface has been studied. The results of the calculations are compared with the available experimental and theoretical results of other authors.
description: 15 pages, 4 figures
Linear Analysis of the Hall Effect in Protostellar Disks
Creators: name: Balbus, S. A.
name: Terquem, C.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The effects of Hall electromotive forces (HEMFs) on the linear stability of protostellar disks are examined. Earlier work on this topic focused on axial field and perturbation wavenumbers. Here we treat the problem more generally. Both axisymmetric and nonaxisymmetric cases are investigated. Though seldom explicitly included in calculations, HEMFs appear to be important whenever Ohmic dissipation is. They allow for the appearance of electron whistler waves, and since these have right-handed polarization, a helicity factor is also introduced into the stability problem. This factor is the product of the components of the angular velocity and magnetic field along the perturbation wavenumber, and it is destabilizing when negative. Unless the field and angular velocity are exactly aligned, it is always possible to find destabilizing wavenumbers. HEMFs can destabilize any differential rotation law, even those with angular velocity increasing outward. Regardless of the sign of the angular velocity gradient, the maximum growth rate is always given in magnitude by the local Oort A value of the disk, as in the standard magnetorotational instability. The role of Hall EMFs may prove crucial to understanding how turbulence is maintained in the ``low state'' of eruptive disk systems.
description: 34 pages, 10 figures, AAS LaTEx, v.4.0. Submitted to ApJ
Additional file 1: of â Weâ ll check vital signs only till we finish the schoolâ : experiences of student nurses regarding intra-semester clinical placement in Ghana
Creators: name: Adjei, Charles
name: Collins Sarpong
name: Attafuah, Priscilla
name: Amertil, Ninon
name: Yaw Akosah
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy

description: Interview guide (DOCX 14 kb)
The massive Schwinger model with $SU(2)_{f}$ on the light cone
Creators: name: Harada, Koji
name: Sugihara, Takanori
name: Taniguchi, Masa-aki
name: Yahiro, Masanobu
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The massive Schwinger model with two flavors is studied in the strong coupling region by using light-front Tamm-Dancoff approximation. The mass spectrum of the lightest particles is obtained numerically. We find that the mass of the lightest isotriplet (``pion'') behaves as $m^{0.50}$ for the strong couplings, where $m$ is the fermion mass. We also find that the lightest isosinglet is not in the valence state (``eta'') which is much heavier in the strong coupling region, but can be interpreted as a bound state of two pions. It is 1.762 times heavier than pion at $m=1.0\times10^{-3}(e/\sqrtπ)$, while Coleman predicted that the ratio is $\sqrt3$ in the strong coupling limit. The ``pion decay constant'' is calculated to be 0.3945.
description: 35 pages (without figures), KYUSHU-HET-9
Dependence of optimal wind turbine spacing on wind farm length
Creators: name: Stevens, Richard J. A. M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Recent large eddy simulations have led to improved parameterizations of the effective roughness height of wind farms. This effective roughness height can be used to predict the wind velocity at hub-height as function of the geometric mean of the spanwise and streamwise turbine spacings and the turbine loading factors. Meyers and Meneveau (Wind Energy 15, 305-317 (2012)) used these parameterizations to make predictions for the optimal wind turbine spacing in infinitely large wind farms. They found that for a realistic cost ratio between the turbines and the used land surface the optimal turbine spacing may be considerably larger than used in conventional wind farms. Here we extend this analysis by taking the length of the wind farm, i.e.\ the number of rows in the downstream direction, into account and show that the optimal turbine spacing strongly depends on the wind farm length. For small to moderately sized wind farms the model predictions are consistent with spacings found in operational wind farms. For much larger wind farms the extended optimal spacing found for infinite wind farms is confirmed.
description: 13 pages, 9 figures
Heat conduction of single-walled carbon nanotube isotope-superlattice structures: A molecular dynamics study
Creators: name: Shiomi, Junichiro
name: Maruyama, Shigeo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Heat conduction of single-walled carbon nanotubes (SWNTs) isotope-superlattice is investigated by means of classical molecular dynamics simulations. Superlattice structures were formed by alternately connecting SWNTs with different masses. On varying the superlattice period, the critical value with minimum effective thermal conductivity was identified, where dominant physics switches from zone-folding effect to thermal boundary resistance of lattice interface. The crossover mechanism is explained with the energy density spectra where zone-folding effects can be clearly observed. The results suggest that the critical superlattice period thickness depends on the mean free path distribution of diffusive-ballistic phonons. The reduction of the thermal conductivity with superlattice structures beats that of the one-dimensional alloy structure, though the minimum thermal conductivity is still slightly higher than the value obtained by two-dimensional random mixing of isotopes.
description: 7 Pages, 5 figures, accepted to Phys. Rev. B
A curved host and second guest cooperatively inhibit the dynamic motion of corannulene.
Creators: name: Yang, Yang
name: Ronson, Tanya K
name: Lu, Zifei
name: Zheng, Jieyu
name: Vanthuyne, Nicolas
name: Martinez, Alexandre
name: Nitschke, Jonathan R
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021

description: Biomolecular systems show how host-guest binding can induce changes in molecular behavior, which in turn impact the functions of the system. Here we report an artificial host-guest system where dynamic adaptation during guest binding alters both host conformation and guest dynamics. The self-assembled cage host employed here possesses concave walls and a chirotopic cavity. Complementarity between the curved surfaces of fullerenes and the inner surface of the host cavity leads the host to reconfigure stereochemically in order to bind these guests optimally. The curved molecule corannulene undergoes rapid bowl-to-bowl inversion at room temperature. Its inversion barrier is increased upon binding, however, and increased further upon formation of a ternary complex, where corannulene and a cycloalkane are both bound together. The chiral nature of the host also leads to clear differences in the NMR spectra of ternary complexes involving corannulene and one or the other enantiomer of a chiral guest, which enables the determination of enantiomeric excess by NMR.
Strong ExB shear flows in the pedestal region in H-mode plasma
Creators: name: Xia, H.
name: Shats, M. G.
name: Punzmann, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We report the first experimental observation of stationary zonal flows in the pedestal region of the H-mode plasma in the H-1 toroidal heliac. Strong peaks in E_r shear mark the top and foot of the density pedestal. Strong m=n=0 low-frequency (f < 0.6 kHz) zonal flows are observed in regions of increased E_r, suggesting substantial contribution of zonal flows to the spatial modulation of E_r radial profiles. Radial localization of zonal flows is correlated with a region of zero magnetic shear and low-order (7/5) rational surfaces.
description: 4 pages, 5 figures
Is a Requirement to Wear a Mask Economically Valid During COVID-19?
Creators: name: Parsons, Steve G.
Publisher: name: University of Bologna Law Review
Year: 2021

description: Two of the most important categories of government intervention in response to COVID-19 are business closures and mask mandates. The scientific literature supports the efficacy of mask-wearing to reduce the transmission of respiratory viruses (including COVID-19). However, the efficacy is greater in stopping outbound transmission (meaning that my mask protects you) than inbound transmission (meaning that my mask protects me). Evidence suggests that the full benefits to society of wearing masks are far greater than the full costs to society of wearing masks. The author argues that mask-wearing is far more cost effective than business closures in controlling the spread of COVID-19. Moreover, the author argues that highly infectious diseases have an externality dimension. The person infected with COVID-19 makes a decision regarding whether to wear a mask based on their own perceived costs and benefits of mask-wearing, but that decision has consequences for those they come in contact with: the infected person’s decision not to wear a mask imposes costs on others that are external to the infected person’s decision process not to do so. The author further argues that some possible methods by which to deal with such an external cost (individual negotiations, a tax on spreading COVID-19, or as subsidy for wearing masks) are impractical. This makes a mask-wearing government mandate economically valid.
description: University of Bologna Law Review, Vol. 6 No. 1 (2021)
Quenches across the self-organization transition in multimode cavities
Creators: name: Keller, Tim
name: Torggler, Valentin
name: Jäger, Simon B.
name: Schütz, Stefan
name: Ritsch, Helmut
name: Morigi, Giovanna
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A cold dilute atomic gas in an optical resonator can be radiatively cooled by coherent scattering processes when the driving laser frequency is tuned close but below the cavity resonance. When sufficiently illuminated, moreover, the atoms' steady state undergoes a phase transition from homogeneous density to crystalline order. We characterize the dynamics of this self-ordering process in the semi-classical regime when distinct cavity modes with commensurate wavelengths are quasi-resonantly driven by laser fields via scattering by the atoms. The lasers are simultaneously applied and uniformly illuminate the atoms, their frequencies are chosen so that the atoms are cooled by the radiative processes, their intensity is either suddenly switched or slowly ramped across the self-ordering transition. Numerical simulations for different ramp protocols predict that the system exhibits long-lived metastable states, whose occurrence strongly depends on initial temperature, ramp speed, and number of atoms.
description: 15 pages, 20 figures
TIER2 D1.3 - Data Management Plan (Update)
Creators: name: Papadopoulou, Elli
Publisher: name: OSF
Year: 2023

description: This project deliverable has been submitted to, but not yet reviewed by the Research Executive Agency, and might thus be subject to change.

This deliverable reflects the data management activities of the TIER2 project. It is the second
edition of its kind aiming to inform on the processes and practices followed by the project as it has
evolved in the past year. The first deliverable was published in M6 and can be found on the
project’s OSF collection (OSF | TIER2 D1.2 - Data Management Plan). Although it provided a
good foundation and a strategy for the consortium to kick off its activities, its dataset coverage
was limited because some tasks were planned later in the roadmap. Hence, this document takes
stock of previous efforts and, serving as a “living document”, it updates and extends the input
provided to both record progress and changes in the decisions of the data management and
reproducibility practices followed by the consortium.

TIER2 will develop next-level reproducibility tools, practices & policies across diverse epistemic
contexts to increase trust, integrity, & efficiency in research. In this context, TIER2 will itself adhere
to radical reproducibility & transparency to ensure best practices, including adherence to Horizon
Europe requirements on Research Data Management & Open Science. At the meta-level, the
DMP of the project will progressively incorporate elements of reproducible research to realise a
prototype of a new concept towards “Reproducibility Management Plans (RMPs)”. This
enhancement will be equally supported by the development of the Reproducibility Management
Plan tool that is expected to be completed over the course of the project’s lifetime.
The TIER2 DMP is produced as machine actionable and FAIR output in the ARGOS service
(argos.openaire.eu) and all versions of the DMP as well as its final iteration in M36 will be linked
on Zenodo (10.5281/zenodo.8092430).

The structure of D1.3 “Data Management Plan (Update)” follows the European Commission’s
Horizon Europe Data Management Plan Template topics and answers the contained questions
with information that members have provided in an aggregated form. The DMP describes both
datasets and software developed in the context of the project, the latter being available in Section
3. Additionally, under other issues, we present the pre-registrations of the project pilots’
implementation plans supporting reproducibility of the projects results. At the end, we provide
detailed information on these outputs in the form of tables.
Simultaneous Optimization of Neural Network Weights and Active Nodes using Metaheuristics
Creators: name: Ojha, Varun Kumar
name: Abraham, Ajith
name: Snasel, Vaclav
Publisher: name: arXiv
Year: 2017
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Optimization of neural network (NN) significantly influenced by the transfer function used in its active nodes. It has been observed that the homogeneity in the activation nodes does not provide the best solution. Therefore, the customizable transfer functions whose underlying parameters are subjected to optimization were used to provide heterogeneity to NN. For the experimental purpose, a meta-heuristic framework using a combined genotype representation of connection weights and transfer function parameter was used. The performance of adaptive Logistic, Tangent-hyperbolic, Gaussian and Beta functions were analyzed. In present research work, concise comparisons between different transfer function and between the NN optimization algorithms are presented. The comprehensive analysis of the results obtained over the benchmark dataset suggests that the Artificial Bee Colony with adaptive transfer function provides the best results in terms of classification accuracy over the particle swarm optimization and differential evolution.
Shockwave-assisted laser filament conductivity
Creators: name: Elise, Schubert
name: Denis, Mongin
name: Thomas, Produit
name: Guillaume, Schimmel
name: Jérôme, Kasparian
name: Jean-Pierre, Wolf
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We investigate the influence of ultrashort laser filaments on high-voltage discharges and spark-free unloading at various repetition rates and wind conditions. For electric fields well below, close to and above the threshold for discharges, we respectively observe remote spark-free unloading, discharge suppression, and discharge guiding. These effects rely on an indirect consequence of the thermal deposition, namely the fast dilution of the ions by the shockwave triggered by the filament at each laser shot. This dilution drastically limits recombination and increases the plasma channel conductivity that can still be non-negligible after tens or hundreds of milliseconds. As a result, the charge flow per pulse is higher at low repetition rates.
description: 8 pages, 4 figures
Keck Hires Observations of the QSO First J104459.6+365605: Evidence for a Large Scale Outflow
Creators: name: de Kool, Martijn
name: Arav, Nahum
name: Becker, Robert H.
name: Gregg, Michael D.
name: White, Richard L.
name: Laurent-Muehleisen, Sally A.
name: Price, Trevor
name: Korista, Kirk T.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper presents an analysis of a Keck HIRES spectrum of the QSO FIRST J104459.6+365605. The line of sight towards the QSO contains two clusters of outflowing clouds that give rise to broad blue shifted absorption lines. The outflow velocities of the clouds range from -200 to -1200 km/s and from -3400 to -5200 km/s, respectively. The width of the individual absorption lines ranges from 50 to more than 1000 km/s. The most prominent absorption lines are those of Mg II, Mg I, and Fe II. The low ionization absorption lines occur at the same velocities as the most saturated Mg II lines, showing that the Fe II, Mg I and Mg II line forming regions must be closely associated. Many absorption lines from excited states of Fe II are present, allowing a determination of the population of several low lying energy levels. From this we determine an electron density in the Fe II line forming regions of 4000 per cubic cm. Modelling the ionization state of the absorbing gas with this value of the electron density as a constraint, we find that the distance between the Fe II and Mg I line forming region and the continuum source is of order 700 parsec. From the correspondence in velocity between the Fe II, Mg I and Mg II lines we infer that the Mg II lines must be formed at the same distance. The Mg II absorption fulfills the criteria for Broad Absorption Lines defined by Weymann et al. (1991). This large distance is surprising, since BALs are generally thought to be formed in outflows at a much smaller distance from the nucleus.
description: 34 pages, 11 figures. Accepted by The Astrophysical Journal
KASABA UYUSHMALARINING TA'LIM SOHASIDAGI FAOLIYATI
Creators: name: Samadova, Feruza
Publisher: name: Zenodo
Year: 2024

description: O'zbekistondagi kasaba uyushmalari ta'lim sohasida muhim rol o'ynaydi va keng ko'lamli faoliyat olib boradi. Ular o'qituvchilar va talabalar huquqlarini himoya qilish, mehnat sharoitlarini yaxshilash, malaka oshirish va qayta tayyorlash kurslarini tashkil etish, moddiy va ma'naviy qo'llab-quvvatlash kabi yo'nalishlarda faol ishlaydi. Shuningdek, kasaba uyushmalari ta'lim jarayonida zamonaviy texnologiyalarni joriy qilish, xalqaro hamkorlikni rivojlantirish, madaniy va sport tadbirlarini tashkil etish, va ijtimoiy dasturlarni amalga oshirish bilan shug'ullanadi. Ularning asosiy maqsadi ta'lim sifatini oshirish, o'qituvchilar va talabalar uchun eng yaxshi sharoitlarni yaratish va ularning huquqlarini himoya qilishdan iborat.
Freeze-out of baryon number in low-scale leptogenesis
Creators: name: Eijima, S.
name: Shaposhnikov, M.
name: Timiryasov, I.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Low-scale leptogenesis provides an economic and testable description of the origin of the baryon asymmetry of the Universe. In this scenario, the baryon asymmetry of the Universe is reprocessed from the lepton asymmetry by electroweak sphaleron processes. Provided that sphalerons are fast enough to maintain equilibrium, the values of the baryon and lepton asymmetries are related to each other. Usually, this relation is used to find the value of the baryon asymmetry at the time of the sphaleron freeze-out. To put in other words, the formula which is valid only when the sphalerons are fast, is applied at the moment when they are actually switched off. In this paper, we examine the validity of such a treatment. To this end, we solve the full system of kinetic equations for low-scale leptogenesis. This system includes equations describing the production of the lepton asymmetry in oscillations of right-handed neutrinos, as well as a separate kinetic equation for the baryon asymmetry. We show that for some values of the model parameters, the corrections to the standard approach are sizeable. We also present a feasible improvement to the ordinary procedure, which accounts for these corrections.
description: 17 pages, 6 figures
Kac-Moody structure of chiral gravity in the light-cone gauge
Creators: name: Smailagic, A.
name: Spallucci, Euro
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the residual symmetry $SL(2,R)\otimes U(1)$ of the chiral gravity in the light-cone gauge. Quantum gravitational effects renormalize the Kac-Moody central charge and introduce, through the Lorentz anomaly, an arbitrary parameter. Due to the presence of this free parameter the Kac-Moody central charge has no forbidden range of values, and the strong gravity regime is open to investigations.
description: 13 Pages, PhyzzX
Additional file 2: of Exploring psychosocial predictors of STI testing in University students
Creators: name: H. Martin-Smith
name: E. Okpo
name: E. Bull
Publisher: name: figshare
Year: 2018
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: STI Screening Questionnaire. This file provides the full questionnaire used to survey participants. (DOCX 76Â kb)
Limitation of entanglement due to spatial qubit separation
Creators: name: Doll, Roland
name: Wubs, Martijn
name: Hanggi, Peter
name: Kohler, Sigmund
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider spatially separated qubits coupled to a thermal bosonic field that causes pure dephasing. Our focus is on the entanglement of two Bell states which for vanishing separation are known as robust and fragile entangled states. The reduced two-qubit dynamics is solved exactly and explicitly. Our results allow us to gain information about the robustness of two-qubit decoherence-free subspaces with respect to physical parameters such as temperature, qubit-bath coupling strength and spatial separation of the qubits. Moreover, we clarify the relation between single-qubit coherence and two-qubit entanglement and identify parameter regimes in which the terms robust and fragile are no longer appropriate.
description: 7 pages, 3 figures; revised version, accepted for publication in Europhys. Lett
Additional file 1: of Quality improvement strategies at primary care level to reduce inequalities in diabetes care: an equity-oriented systematic review
Creators: name: Terens, Natalie
name: Vecchi, Simona
name: Bargagli, Anna
name: Agabiti, Nera
name: Mitrova, Zuzana
name: Amato, Laura
name: Davoli, Marina
Publisher: name: figshare
Year: 2018
Subjects: subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy

description: Search strategy for PubMed. (DOCX 17 kb)
ACO for Continuous Function Optimization: A Performance Analysis
Creators: name: Ojha, Varun Kumar
name: Abraham, Ajith
name: Snasel, Vaclav
Publisher: name: arXiv
Year: 2017
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: The performance of the meta-heuristic algorithms often depends on their parameter settings. Appropriate tuning of the underlying parameters can drastically improve the performance of a meta-heuristic. The Ant Colony Optimization (ACO), a population based meta-heuristic algorithm inspired by the foraging behavior of the ants, is no different. Fundamentally, the ACO depends on the construction of new solutions, variable by variable basis using Gaussian sampling of the selected variables from an archive of solutions. A comprehensive performance analysis of the underlying parameters such as: selection strategy, distance measure metric and pheromone evaporation rate of the ACO suggests that the Roulette Wheel Selection strategy enhances the performance of the ACO due to its ability to provide non-uniformity and adequate diversity in the selection of a solution. On the other hand, the Squared Euclidean distance-measure metric offers better performance than other distance-measure metrics. It is observed from the analysis that the ACO is sensitive towards the evaporation rate. Experimental analysis between classical ACO and other meta-heuristic suggested that the performance of the well-tuned ACO surpasses its counterparts.
3D porous media liquid-solid interaction simulation using SPH modeling and tomographic images
Creators: name: GASTELUM-STROZZI, Alfonso
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 410605
subject: Soil physics

description: We propose to study the mechanical properties ofa volcanic soil sample (monolith) using a computermodel. We propose the use of CT-images to constructthe Mechanical Computational Model. The image obtainedfrom the CT-Scan give us a 3D model of thepores system of the monolith. This system relates theinternal connectivity between different pores and thesoil volume. To simulate fluid-solid interaction andthe mechanical properties of the soil monolith model weused Smoothed Particle Hydrodynamics. This methodhas a proven track report to solve multistate interaction.As SPH relies on a set of points without usinga Tetrahedral Mesh representation, we can relate easilythe intensity value of each pixel of the CT-Scan images(related to density values) to our 3D point dataset. We aim to our 3D pore network model and theSPH evolution modelling technique to simulate the fateof solutes in porous media. Such study is of importanceto the soil sciences community to accurately predictthe impact of pollutants and chemical compoundsin groundwater supplies.
METHODOLOGY AND PRAXIS IN RESEARCHING THE NON-WESTERN WORLD: DIALOGUE BETWEEN ALEXEI D. VOSKRESSENSKI AND FRED EIDLIN* as an Introduction to the Special Issue of “Comparative Politics Russia”
Creators: name: Voskressenski, Alexei D.
Publisher: name: Сравнительная политика
Year: 2019
Subjects: non-western world; non-western theory; comparative politics; international relations

description: Introduction to the Special Issue of “Comparative Politics Russia” ‒ “Non-Western Transformations”. In Honor of the “Comparative Politics Russia” author Fred Eidlin. The text is compiled by fragments of a selected correspondence ‒ the exchange of views between professors Alexei D. Voskressesnki and Fred Eidlin while preparing methodological articles of F. Eidlin for publication in the journal “Comparative Politics Russia” and other books on Non-Western processes.
title: Access to Justice in Environmental Matters in the EU Legal Order: The “Sectoral” Turn in Legislation and Its Pitfalls
Creators: name: Eliantonio, Mariolina
name: Richelle, Justine
Publisher: name: European Papers (www.europeanpapers.eu)
Year: 2024
Subjects: subject: access to justice
subject: environment
subject: Aarhus Convention
subject: EU law
subject: procedural rights
subject: sectoral approach

description: European Papers - A Journal on Law and Integration, 2024 9(1), 261-274
description: European Forum Insight of 08 July 2024
description: I. Introduction. - II. Art. 9(3) of the Aarhus Convention and access to justice. - III. Art. 9(3) and the EU legal system: a story of uneasy bedfellows. - IV. The “sectoral” approach and its shortcomings. - iv.1. The genesis of the “sectoral” approach. - iv.2. Analysis of the sectoral provisions: a patchwork of inconsistent approaches. - V. Conclusion
description: Access to justice in environmental matters is one of the three pillars of the Aarhus Convention, to which both the EU and its Member States are Parties. In the Convention, access to justice is subdivided into four limbs. Art. 9(3) contains the general obligation of access to review procedures for the public of acts and omissions of private persons and public authorities concerning national law relating to the envi-ronment. Art. 9(3) had to be transposed by the Parties to the Convention, taking the discretion left by the vague wording of the provision into account. At the EU level, unlike for art. 9(1) and (2), there is no formal transposition of art. 9(3) in a dedicated Directive, because of Member States’ reluctance. The so-lution found by the Commission to remedy this lack of EU legislation on the matter was the publication of a soft law instrument in 2017. Since then, we have witnessed a shift in the approach used by the EU legislator, with access to justice provisions being incorporated directly into several pieces of “sectoral” legislation (Regulations and Directives), across various environmental areas. This Insight aims at retrac-ing the history of art. 9(3) of the Aarhus Convention in the EU legal order and at analysing and evaluat-ing the recent tendency of including access to justice rights in sectoral legislation.
An overview of organic geochemical indices to evaluate conventional petroleum source rocks: a summary of examples from the Indian Subcontinent
Creators: name: Ratnayake, Amila Sandaruwan
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: The elemental, isotopic, and molecular (biomarker) compositions of sedimentary organic matter help to evaluate conventional petroleum source rocks. The objectives of this overview article are to discuss commonly used organic geochemical indices for petroleum source rock evaluation, and analyze and synthesize such studies in the Indian Subcontinent. Since most of the fundamental analysis has been carried out in the European and North American Continents, this study covers the gap in the Indian Subcontinent. The organic geochemical indices reviewed are total organic carbon (TOC), Rock-Eval pyrolysis, C/N ratio, carbon isotopic composition, molecule/biomarkers (e.g., n-alkane/aliphatic hydrocarbon, polycyclic aromatic hydrocarbon) which are used for qualitative and quantitative analysis of source rock composition. This study also evaluates the lithostratigraphic characteristics of the source rocks in the Mannar Basin of the Indian Subcontinent. In conclusion, the Mannar petroleum source rocks show Type III and Type II–III dominated gas and oil-gas prone kerogen with fair to good source rock potential. A comparison of organic geochemical indices with their geologic setting would improve interpretations of petroleum source rock characteristics in the Indian Subcontinent.
The Association of Jet Production with Geometrically Thick Accretion Flows and Black Hole Rotation
Creators: name: Meier, David L.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A model is presented in which the strongest radio-emitting jet outflows are produced in black hole systems when the accretion is a geometrically thick ($H/R \sim 1$) inflow ({\it e.g.}, ADAF, CDAF) {\em and} if the black hole is rotating. For galactic black hole candidates, the model naturally accounts for the observed correlation of jet outflow with the black hole hard emission state and predicts an association of strong jets with rapid black hole rotation. When extended to the supermassive case, the model accounts for the highest radio galaxy and quasar jet powers and provides additional theoretical support for the ``spin paradigm'', which asserts that radio loud quasars are produced by Kerr holes and radio quiet ones by Schwarzschild holes. In some cases, the angular momentum and energy outflow in the jet may be large enough to significantly alter the structure of the accretion flow from that predicted by current models.
description: 5 pages; revised version submitted to ApJ Letters
Model and simulation of wide-band interaction in free-electron lasers
Creators: name: Pinhasi, Yosef
name: Lurie, Yuri
name: Yahalom, Asher
Publisher: name: arXiv
Year: 2006
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A three-dimensional, space-frequency model for simulation of interaction in free-electron lasers (FELs) is presented. The model utilizes an expansion of the total electromagnetic field (radiation and space-charge waves) in terms of transverse eigenmodes of the waveguide, in which the field is excited and propagates. The mutual interaction between the electron beam and the electromagnetic field is fully described by coupled equations, expressing the evolution of mode amplitudes and electron beam dynamics. Based on the three-dimensional model, a numerical particle simulation code was developed. A set of coupled-mode excitation equations, expressed in the frequency domain, are solved self-consistently with the equations of particles motion. Variational numerical methods were used to simulate excitation of backward modes. At present, the code can simulate free-electron lasers operation in various modes: spontaneous (shot-noise) and self-amplified spontaneous emission (SASE), super-radiance and stimulated emission, all in the non-linear Compton or Raman regimes.
description: 11 pages, 4 figures, 1 table
Additional file 1: of Evaluation of the clinical effectiveness of bioactive glass (S53P4) in the treatment of non-unions of the tibia and femur: study protocol of a randomized controlled non-inferiority trial
Creators: name: Tanner, Michael
name: Raban Heller
name: Westhauser, Fabian
name: Miska, Matthias
name: Ferbert, Thomas
name: Fischer, Christian
name: Gantz, Simone
name: Schmidmaier, Gerhard
name: Haubruck, Patrick
Publisher: name: figshare
Year: 2018
Subjects: Medicine
Biotechnology
Science Policy

description: Standard Protocol Items: Recommendations for Interventional Trials (SPIRIT) 2013 Checklist: recommended items to address in a clinical trial protocol and related documents. (DOC 119Â kb)
Generalized coupled wake boundary layer model: applications and comparisons with field and LES data for two wind-farms
Creators: name: Stevens, Richard J. A. M.
name: Gayme, Dennice F.
name: Meneveau, Charles
Publisher: name: arXiv
Year: 2017
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We describe a generalization of the Coupled Wake Boundary Layer (CWBL) model for wind-farms that can be used to evaluate the performance of wind-farms under arbitrary wind inflow directions whereas the original CWBL model (Stevens et al., J. Renewable and Sustainable Energy 7, 023115 (2015)) focused on aligned or staggered wind-farms. The generalized CWBL approach combines an analytical Jensen wake model with a "top-down" boundary layer model coupled through an iterative determination of the wake expansion coefficient and an effective wake coverage area for which the velocity at hub-height obtained using both models converges in the "deep-array" portion (fully developed region) of the wind-farm. The approach accounts for the effect of the wind direction by enforcing the coupling for each wind direction. Here we present detailed comparisons of model predictions with LES results and field measurements for the Horns Rev and Nysted wind-farms operating over a wide range of wind inflow directions. Our results demonstrate that two-way coupling between the Jensen wake model and a "top-down" model enables the generalized CWBL model to predict the "deep-array" performance of a wind-farm better than the Jensen wake model alone. The results also show that the new generalization allows us to study a much larger class of wind-farms than the original CWBL model, which increases the utility of the approach for wind-farm designers.
description: 17 pages, 11 figures