cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Guiding Robust Valley-dependent Edge States by Surface Acoustic Waves
Creators: name: Wang, Zhen
name: Liu, Fu-Kang
name: Yu, Si-Yuan
name: Yan, Shi-Ling
name: Lu, Ming-Hui
name: Jing, Yun
name: Chen, Yan-Feng
Publisher: name: arXiv
Year: 2018
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Recently, the concept of valley pseudospin, labeling quantum states of energy extrema in momentum space, has attracted enormous attention because of its potential as a new type of information carrier. Here, we present surface acoustic wave (SAW) waveguides, which utilize and transport valley pseudospins in two-dimensional SAW phononic crystals (PnCs). In addition to a direct visualization of the valley-dependent states excited from the corresponding chiral sources, the backscattering suppression of SAW valley-dependent edge states transport is observed in sharply curved interfaces. By means of band structure engineering, elastic wave energy in the SAW waveguides can be transported with remarkable robustness, which is very promising for new generations of integrated solid-state phononic circuits with great versatility.
Spacetime as a Feynman diagram: the connection formulation
Creators: name: Reisenberger, Michael P.
name: Rovelli, Carlo
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Spin foam models are the path integral counterparts to loop quantized canonical theories. In the last few years several spin foam models of gravity have been proposed, most of which live on finite simplicial lattice spacetime. The lattice truncates the presumably infinite set of gravitational degrees of freedom down to a finite set. Models that can accomodate an infinite set of degrees of freedom and that are independent of any background simplicial structure, or indeed any a priori spacetime topology, can be obtained from the lattice models by summing them over all lattice spacetimes. Here we show that this sum can be realized as the sum over Feynman diagrams of a quantum field theory living on a suitable group manifold, with each Feynman diagram defining a particular lattice spacetime. We give an explicit formula for the action of the field theory corresponding to any given spin foam model in a wide class which includes several gravity models. Such a field theory was recently found for a particular gravity model [De Pietri et al, hep-th/9907154]. Our work generalizes this result as well as Boulatov's and Ooguri's models of three and four dimensional topological field theories, and ultimately the old matrix models of two dimensional systems with dynamical topology. A first version of our result has appeared in a companion paper [gr-qc\0002083]: here we present a new and more detailed derivation based on the connection formulation of the spin foam models.
description: 32 pages, 2 figures
Phaedon huizuensis Daccordi & Ge 2015, sp. nov.
Creators: name: Ge, Si-Qin
name: Daccordi, Mauro
name: Ren, Jing
name: Yang, Xing-Ke
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Phaedon
Phaedon huizuensis

description: Phaedon huizuensis Daccordi & Ge, sp. nov. (Fig. 13)
Description. Body length 2.9–3.2 mm, width 1.9–2.1 mm. Body elongate, rather convex, hind wings absent. Colour dark brown to dark green with dark blue reflection; tibiae and tarsi brick red.
Head. Vertex and frons with sparse and small punctures. Antennae shown as Figs 13A, 13B.
Thorax and abdomen. Pronotum length 0.9–1.0 mm, width 1.6–1.7 mm; with sparse punctures. Scutellum subtriangular, with very sparse punctures. Elytra length 2.3–2.5 mm; striae regular, interspace with fine and dense punctures. Epiperuron impunctate, with transversal wrinkles expecially on apical one third part. Underside. Prosternal process narrow, apex slightly widened. Hypomeron, mesoventrite, metaventrite and abdomen with dense and fine punctures. Antero-lateral plate of metaventrite large and impunctate.
Aedeagus. Shown as Figs 13C, 13D.
Spermatheca. Shown as Fig. 13E.
Material examined. Holotype male, China, E. Qinghai, pass 30km S. of Huizu (elev. 3 600 m), 1–3 August 1992 (IZCAS). Paratypes 4 female, same data as holotype (1 female in IZCAS, 3 female in MDC).
Etymology. The specific name is referring to the type locality, Huizu.
 Remarks. The new species is similar to P. alpinus, but it can distinguished from the latter by shinning interspace of elytra striae, slender aedeagus, and almost parallel lateral sides.
Distribution. China (Qinghai).
description: Published as part of Ge, Si-Qin, Daccordi, Mauro, Ren, Jing & Yang, Xing-Ke, 2015, Revision of Phaedon Latreille from China (Coleoptera: Chrysomelidae), pp. 1-30 in Zoological Systematics 40 (1) on page 20, DOI: 10.11865/zs.20150101, http://zenodo.org/record/7176752
The Apertif Monitor for Bursts Encountered in Real-time (AMBER) auto-tuning optimization with genetic algorithms
Creators: name: Mikhailov, Klim
name: Sclocco, Alessio
Publisher: name: arXiv
Year: 2018
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Real-time searches for faint radio pulses from unknown radio transients are computationally challenging. Detections become further complicated due to continuously increasing technical capabilities of transient surveys: telescope sensitivity, searched area of the sky, number of antennas or dishes, temporal and frequency resolution. The new Apertif transient survey on the Westerbork telescope happens in real-time on GPUs by means of the single-pulse search pipeline AMBER (Sclocco, 2017). AMBER initially carries out auto tuning: it finds the most optimal configuration of user-controlled parameters per each of four pipeline kernels so that each kernel performs its task as fast as possible. The pipeline uses a brute-force (BF) exhaustive search which in total takes 5 - 24 hours to run depending on the processing cluster architecture. We apply more heuristic, biologically driven genetic algorithms (GAs) to limit the exploration of the total parameter space, tune all four kernels together and reduce the tuning time to few hours. Our results show that after only few hours of tuning, GAs always find similar or even better configurations for all kernels together than the combination of single kernel configurations tuned by the BF approach. At the same time, by means of their genetic operators, GAs converge into better solutions than those obtained by pure random searches. The explored multi-dimensional parameter space is very complex and has multiple local optima as the evolution of randomly generated configurations does not always guarantee global solution.
description: 13 pages, 8 figures, 3 tables
Additional file 1: of Virulence factor RNA transcript expression in the Leishmania Viannia subgenus: influence of species, isolate source, and Leishmania RNA virus-1
Creators: name: Ruwandi Kariyawasam
name: Mukkala, Avinash
name: Lau, Rachel
name: Valencia, Braulio
name: Llanos-Cuentas, Alejandro
name: Boggild, Andrea
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: Computational Biology

description: Supplementary Methods and Results. (DOCX 24 kb)
Theory of ferromagnetism in (A,Mn)B semiconductors
Creators: name: Rajagopal, A. K.
name: Mochena, Mogus
name: Lin-Chung, P. J.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A brief review of theory of ferromagnetism of dilute magnetic semiconductors of the form (A,Mn)B based on the double exchange model is first given. A systematic investigation of the phenomena extending the current theory is outlined. We begin with an investigation of the regions of instability of the nonmagnetic towards the ferromagnetic state of a system of Mn-atoms doped in AB-type semiconductor. A self-consistent many-body theory of the ferromagnetic state is then developed, going beyond the mean field approaches by including fluctuations of the Mn-spins and the itinerant hole-gas. A functional theory suitable for computation of system properties such as Curie temperature as a function of hole and the Mn-concentration, spin-current, etc. is formulated.
description: 16 pages
Tight-binding calculations of SiGe alloy nanocrystals in SiO2 matrix
Creators: name: Belolipetsky, A. V.
name: Nestoklon, M. O.
name: Yassievich, I. N.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In the empirical tight-binding approach we study the electronic states in spherical SiGe nanocrystals embedded in SiO2 matrix. The energy and valley structure is obtained as a function of Ge composition and nanocrystal size. The calculations show that the mixing of hot electrons in the nanocrystal with electrons in wide band gap matrix is possible and this mixing strongly depends on the Ge composition in the nanocrystal.
description: 5 pages, 5 figures
Zamarada dentigera Warren 1909
Creators: name: Mbata, Keith J.
name: Prins, Jurate De
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Geometridae
Zamarada
Zamarada dentigera

description: Zamarada dentigera Warren, 1909b
COMMON NAME(S): Geometer moth.
SYNONYM(S): Zamarada polymnia Oberth ̧r, 1912.
IUCN STATUS: Not Evaluated (NE).
DISTRIBUTION: Angola, Cameroon, Central African Republic, Côte d’Ivoire, Democratic Republic of Congo, Equatorial Guinea, Gabon, Ghana, Guinea, Kenya, Malawi, Mozambique, Nigeria, Sierra Leone, South Africa, Tanzania, Uganda, Zambia, Zimbabwe.
LOCALITY IN ZAMBIA: ‘Lusaka’, in Lusaka Province.
LARVAL HOSTPLANT(S): Larval foodplants include a yet to be identified Fabaceae species, Acacia sp., and an Ochnaceae species, Ochna sp. (African Moths 2019).
SOURCES: African Moths 2019; De Prins & De Prins 2022; Pinhey 1975.
description: Published as part of Mbata, Keith J. & Prins, Jurate De, 2023, Annotated checklist of moths of Zambia (Insecta: Lepidoptera), pp. 1-503 in Zootaxa 5354 (1) on page 232, DOI: 10.11646/zootaxa.5354.1.1, http://zenodo.org/record/10130434
Where are holes in Y_{1-x}Pr_xBa2Cu3O7 ?
Creators: name: Mazin, I. I.
name: Liechtenstein, A. I.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Recent experiments by Mertz et al (Phys. Rev. B55, 9160, 1997) demonstrated that the loss of superconductivity upon Pr doping is associated with the change of the character of the oxygen holes from $p_σ$ to $p_π.$ This experiment sheds new light onto the long-standing problem of $T_{c}$ suppression by Pr, and helps to rule out a number of theoretical models, leaving only those which predict such a transfer of the O holes. To distinguish between the two models that do predict such an effect, one has to access the ratio of the planar and axial character of the holes in both models. We do so in this paper.
description: 3 RevTeX pages, 1 epsfig figure embedded
Conformal Defect Solutions in $N=2,D=4$ Gauged Supergravity
Creators: name: Gutperle, Michael
name: Vicino, Matteo
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider conformal defect solutions in four dimensional $N=2$ gauged supergravity. These solutions are constructed as a warped product of $AdS_2\times S^1$ over an interval with non-trivial electric and magnetic fields. We show for minimal gauged supergravity and for gauged supergravity with vector multiplets and abelian gauging that supersymmetric defect solutions are only possible when the geometry has a conical defect in either the bulk or the boundary metric.
description: 20 pages, no figures
Vertex corrections in gauge theories for two-dimensional condensed matter systems
Creators: name: Kopietz, Peter
Publisher: name: arXiv
Year: 1998
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We calculate the self-energy of two-dimensional fermions that are coupled to transverse gauge fields, taking two-loop corrections into account. Given a bare gauge field propagator that diverges for small momentum transfers q as 1 / q^{eta}, 1 < eta < 2, the fermionic self-energy without vertex corrections vanishes for small frequencies omega as Sigma (omega) propto omega^{gamma with gamma = {frac{2}{1 + eta}} < 1. We show that inclusion of the leading radiative correction to the fermion - gauge field vertex leads to Sigma (omega) propto omega^{gamma} [ 1 - a_{eta} ln (omega_0 / omega) ], where a_η is a positive numerical constant and omega_0 is some finite energy scale. The negative logarithmic correction is consistent with the scenario that higher order vertex corrections push the exponent gamma to larger values.
description: 6 figures
THE STORY "KARAKOZ MAJNOON" BY SAID AHMED
Creators: name: Abdurahmonova, Mavluda
Publisher: name: Zenodo
Year: 2024

description: In this article, information about the life and work of our famous writer Said Ahmed is presented, in the story "Karakoz Majnun", which is one of the rare works of the writer, the character of a faithful animal is shown through the image of a dog.
Collisions between cold molecules in a superconducting magnetic trap
Creators: name: Segev, Yair
name: Pitzer, Martin
name: Karpov, Michael
name: Akerman, Nitzan
name: Narevicius, Julia
name: Narevicius, Edvardas
Publisher: name: arXiv
Year: 2019
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Collisions between cold molecules are essential for studying fundamental aspects of quantum chemistry, and may enable formation of quantum degenerate molecular matter by evaporative cooling. However, collisions between trapped, naturally occurring molecules have so far eluded direct observation due to the low collision rates of dilute samples. We report the first directly observed collisions between cold, trapped molecules, achieved without the need of laser cooling. We magnetically capture molecular oxygen in a 0.8K x kB deep superconducting trap, and set bounds on the ratio between the elastic and inelastic scattering rates, the key parameter determining the feasibility of evaporative cooling. We further co-trap and identify collisions between atoms and molecules, paving the way to studies of cold interspecies collisions in a magnetic trap.
Dynamic Cosmic Strings I
Creators: name: Sjodin, K R P
name: Sperhake, U
name: Vickers, J A
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The field equations for a time dependent cylindrical cosmic string coupled to gravity are reformulated in terms of geometrical variables defined on a 2+1-dimensional spacetime by using the method of Geroch decomposition. Unlike the 4-dimensional spacetime the reduced case is asymptotically flat. A numerical method for solving the field equations which involves conformally compactifying the space and including null infinity as part of the grid is described. It is shown that the code reproduces the results of a number of vacuum solutions with one or two degrees of freedom. In the final section the interaction between the cosmic string and a pulse of gravitational radiation is briefly described. This will be fully analysed in the sequel.
description: RevTex, 17 pages, 20 images
Euphrosynoplax Guinot 1969
Creators: name: Tavares, Marcos
name: Santana, William
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Pseudorhombilidae
Euphrosynoplax

description: Euphrosynoplax Guinot, 1969
 Type species: Euphrosynoplax clausa Guinot, 1969, fixed by original designation and monotypy. Gender feminine.
 Type locality: Florida, Dry Tortugas, 91 m.
 Included species: Euphrosynoplax campechiensis Vázquez-Bader & Gracia, 1991, Euphrosynoplax clausa Guinot, 1969, and Euphrosynoplax dincao sp. nov.
description: Published as part of Tavares, Marcos & Santana, William, 2021, First record and a new species of Euphrosynoplax (Crustacea: Pseudorhombilidae) from the southwestern Atlantic, pp. 1-7 in Papéis Avulsos de Zoologia (Pap. Avulsos Zool., S. Paulo) (Pap. Avulsos Zool., S. Paulo) 61 on page 1, DOI: 10.11606/1807-0205/2021.61.66, http://zenodo.org/record/7176926
Bose-Einstein condensation in variable dimensionality
Creators: name: McKinney, B. A.
name: Watson, D. K.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We introduce dimensional perturbation techniques to Bose-Einstein condensation of inhomogeneous alkali gases (BEC). The perturbation parameter is delta=1/kappa, where kappa depends on the effective dimensionality of the condensate and on the angular momentum quantum number. We derive a simple approximation that is more accurate and flexible than the N -> infinity Thomas-Fermi ground state approximation (TFA) of the Gross-Pitaevskii equation. The approximation presented here is well-suited for calculating properties of states in three dimensions and in low effective dimensionality, such as vortex states in a highly anisotropic trap.
Finding Other Sources: Using Machine Learning and Thematic Analysis to Extract Information about Diabetes Self-Management from Open-Source Data
Creators: name: Yousif, Farahnaz
Publisher: name: Manara - Qatar Research Repository
Year: 2025
Subjects: classificationCode: 40
subject: Engineering

description: BackgroundThe amount of health-related online content is steadily increasing due to the proliferation of m-health applications and their growing use. Those content, which is publicly available on open-data platforms, may be used to support public health.ObjectiveThis paper’s main aim is to explore the possibility of using topic modeling techniques to extract comparable topics from user reviews of diabetes applications to those found in a conventional Diabetes self-management questionnaire.MethodLeveraging Python (Google Play Scraper) and a set of predefined search terms ("Blood Sugar", "Diabetes", and "Glucose"), we extracted a total of 153.3k diabetes apps users reviews and related metadata such as user ratings and timestamps. We performed sentiment analysis on our dataset and analyzed the collected reviews using single (unigrams) word frequencies and double words (bigrams). To classify the topics discussed in the articles, we used the Latent Dirichlet Allocation for topic modeling. Lastly, we further mapped the user reviews to the found topics using a string-matching technique and measured the interaction rate per topic.ResultsOur analysis identified a total of 15 topics in the user reviews of diabetes applications, which were grouped into two main themes: "Self-Monitoring of Diabetes" and "Diabetes Self-management Technology". These topics were compared to the four categories found in the Diabetes Self-Management (DSM) questionnaire, with eight of the user reviews topics correlating with the questionnaire's four categories.ConclusionThe dataset extracted from user reviews of diabetes apps was used to generate topics similar to that collected from the DSM questionnaire and some additional data. Consequently, these findings suggest that analyzing open-source data to assess chronically ill populations' general trends and behaviors appears to be a highly feasible choice that could allow for continuous monitoring at a reduced cost.
Ion-crystal demonstration of structural phase transition induced solely by temperature
Creators: name: Li, J.
name: Yan, L. L.
name: Chen, L.
name: Liu, Z. C.
name: Zhou, F.
name: Zhang, J. Q.
name: Yang, W. L.
name: Feng, M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate for the first time a linear-zigzag phase transition induced solely by temperature of the $^{40}$Ca$^{+}$ ion crystals in a surface-electrode trap. In contrast to the previously observed counterparts based on change of the mechanical equilibrium conditions of the ions, our presented structural phase transition occurs due to controllable influence of thermal fluctuation. The ions' temperature is well controlled by tuning the cooling laser and the experimental observation could be fully understood by classical Langevin equation in addition to the effects from thermal fluctuation. Our experimental investigation indicates the fantastic role of thermal fluctuation played in the thermodynamic process at atomic level, which might bridge the thermodynamics from the macroscopic domain to the quantum regime.
description: 3 figures
Argoravinia rufiventris
Creators: name: Andrade-Herrera, Kepler Nils
name: Mello-Patiu, Cátia Antunes de
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Sarcophagidae
Argoravinia
Argoravinia rufiventris

description: Argoravinia rufiventris (Walker, 1849)
 Material examined: PIURA – Piura, Castilla, Caserío Miraflores, 32 m (05°10′00.51″S, 80°36′51.27″W), 20.vi.2017, guinea pig carcass, 3 ♂, K. Andrade leg.
 World distribution: Argentina, Bolivia, Brazil, Costa Rica, El Salvador, Guatemala, Guyana, Honduras, Jamaica, Marshall Islands, Mexico, Panama, Peru, Puerto Rico, Trinidad & Tobago, USA (Pape, 1996).
 Distribution in Peru: Piura (Townsend, 1912 as Sarcophaga argentea).
 Remarks: Registered in pig carcasses (Watson & Carlton, 2003; Barros et al., 2008; Rosa et al., 2011; Alves et al., 2014), bear and deer (Watson & Carlton, 2003), and rat (Beuter et al., 2012).
description: Published as part of Andrade-Herrera, Kepler Nils & Mello-Patiu, Cátia Antunes de, 2022, Contribution to the knowledge of flesh flies (Diptera: Sarcophagidae: Sarcophaginae) attracted to carcasses in Piura, Peru, pp. 1-5 in Papéis Avulsos de Zoologia 62 on page 2, DOI: 10.11606/1807-0205/2022.62.012, http://zenodo.org/record/7176985
Applying the linear δ-expansion to disordered systems
Creators: name: Blencowe, M. P.
name: Korte, A. P.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We apply the linear $δ$-expansion (LDE), originally developed as a nonperturbative, analytical approximation scheme in quantum field theory, to problems involving noninteracting electrons in disordered solids. The initial idea that the LDE method might be applicable to disorder is suggested by the resemblance of the supersymmetric field theory formalism for quantities such as the disorder-averaged density of states and conductance to the path integral expressions for the n-point functions of $λϕ^4$ field theory, where the LDE has proved a successful method of approximation. The field theories relevant for disorder have several unusual features which have not been considered before, however, such as anticommuting fields with Faddeev-Popov (FP) rather than Dirac-type kinetic energy terms, imaginary couplings and Minkowskian field coordinate metric.Nevertheless we show that the LDE method can be successfully generalized to such field systems.
description: Latex, 24 pages, 2 postscript figures, accepted for publication in Phys. Rev. B
title: Self-Adaptive Intelligent Deployment of Message Brokers: An Empirical Study on IoT Performance
Creators: name: Amiri, Amirali
name: Nastic, Stefan
name: Javadi, Bahman
name: Kastner, Wolfgang
Publisher: name: TU Wien
Year: 2025
Subjects: Self-Adaptive Systems
Deep Neural Networks
Empirical Data

description: The Internet of Things (IoT) encompasses diverse characteristics, such as varying load frequencies and performance requirements. Designing static IoT systems to cover such varying loads is challenging. Self-adaptive systems, enhanced by artificial intelligence, can offer better performance by responding dynamically to changing conditions. Empirical research is essential to validate such systems. In this paper, we contribute by designing experiments to assess the performance of multiple IoT architectures under various load frequencies. Using the empirical data collected, we train an artificial neural network to predict response times for untested frequencies, identifying optimal scenarios for self-adaptive architecture transitions. We present a dataset of 2,641,008 points regarding the response times of requests for several industrial IoT deployment architectures. We perform an extensive systematic evaluation of 4,374 cases indicating 29.6% improvements in terms of reducing mean response times. Additionally, we provide prototypical tool support for practical implementations and to make our approach easy-to-use.
Models of irradiated molecular shocks
Creators: name: Godard, Benjamin
name: Forêts, Guillaume Pineau des
name: Lesaffre, Pierre
name: Lehmann, Andrew
name: Gusdorf, Antoine
name: Falgarone, Edith
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Aims. The goal of the paper is to present a detailed study of the propagation of low velocity (5 to 25 km s-1) stationary molecular shocks in environments illuminated by an external ultraviolet (UV) radiation field. In particular, we intend to show how the structure, dynamics, energetics, and chemical properties of shocks are modified by UV photons and to estimate how efficiently shocks can produce line emission. Methods. We implemented several key physico-chemical processes in the Paris-Durham shock code to improve the treatment of the radiative transfer and its impact on dust and gas particles. We propose a new integration algorithm to find the steady-state solutions of magnetohydrodynamics equations in a range of parameters in which the fluid evolves from a supersonic to a subsonic regime. We explored the resulting code over a wide range of physical conditions, which encompass diffuse interstellar clouds and hot and dense photon-dominated regions (PDR). Results. We find that C-type shock conditions cease to exist as soon as G0 > 0.2 (nH/cm-3)^1/2. Such conditions trigger the emergence of another category of stationary solutions, called C*-type and CJ-type shocks, in which the shocked gas is momentarily subsonic along its trajectory. These solutions are shown to be unique for a given set of physical conditions and correspond to dissipative structures in which the gas is heated up to temperatures comprised between those found in C-type and adiabatic J-type shocks. High temperatures combined with the ambient UV field favour the production or excitation of a few molecular species to the detriment of others, hence leading to specific spectroscopic tracers such as rovibrational lines of H2 and rotational lines of CH+. Unexpectedly, the rotational lines of CH+ may carry as much as several percent of the shock kinetic energy.
School-Based Management Model and Quality Assurance in Nigerian Secondary Schools
Creators: name: Adeolu Joshua Ayeni
Publisher: name: Zenodo
Year: 2021
Subjects: School-based management committee
school-based management model
transforma-tional process
students' academic performance
quality assurance

description: There had been a global concerned by the stakeholders in education over the perceived inadequacies in the management of education system, dwindling quality of education and students’ academic achievement in secondary schools. This study therefore examined the School-Based Management Committee’s (SBMC) involvement and effectiveness in school governance, and students’ academic performance in Nigerian secondary schools; the major challenges facing effective SBM practice were identified as low capacity of key members of the SBMCs; poor attendance of members at meetings due to lack of incentives and financial support from the government; lack of cooperation from the schools; and PTA’s resistance to the SBMC initiatives; these resulted in ineffective school management and partly responsible for the low level of students’ academic achievement. It was concluded that a school based management model be adopted to strengthen the operational capacity of SBMCs for efficient service delivery and quality learning outcomes in secondary schools.
Circuit model for spin-bottleneck resistance in magnetic-tunnel-junction devices
Creators: name: Jungwirth, T.
name: MacDonald, A. H.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Spin-bottlenecks are created in magnetic-tunnel-junction devices by spatial inhomogeneity in the relative resistances for up and down spins. We propose a simple electrical circuit model for these devices which incorporates spin-bottleneck effects and can be used to calculate their overall resistance and magnetoresistance. The model permits a simple understanding of the dependence of device magnetoresistance on spin diffusion lengths, tunneling magnetoresistance, and majority and minority spin resistivities in the ferromagnetic electrodes. The circuit model is in a good quantitative agreement with detailed transport calculations.
description: 4 pages, 3 figures, submitted to Phys. Rev. B
Preexisting diabetes, serum calcium and D-dimer levels as predictable risk factors for pancreatic necrosis of patients with acute pancreatitis: a retrospective study
Creators: name: Xue, Enfu
name: Shi, Qiao
name: Guo, Shouliang
name: Zhang, Xiaoyi
name: Liu, Chengsi
name: Qian, Bin
name: Guo, Xingzhou
name: Hu, Ning
name: Jiang, Fang
name: Tao, Jing
name: Wang, Weixing
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Virology

description: Some individuals with acute pancreatitis (AP) suffer from pancreatic necrosis. Diabetes affects the severity of AP, but whether diabetes influences pancreatic necrosis is unclear. This study aims to investigate the clinical characteristics of AP patients with and without diabetes as well as analyze the risk factors of pancreatic necrosis. A total of 625 AP patients participated in the study. Clinical and laboratory data were retrieved. Multivariate logistic regression analysis was used to identify the risk factors for pancreatic necrosis. ROC curves assess the accuracy of indicators for predicting pancreatic necrosis in AP. AP patients with diabetes had high BMI, CTSI scores, pancreatitis severity, WBC, neutrophil, CRP, triacylglycerols and glucose levels. Diabetes, serum calcium and D-dimer were independent risk factors for pancreatic necrosis. Pancreatic necrosis in diabetes patients is also associated with sex and age. D-dimer is a better predictor of pancreatic necrosis in AP patients than serum calcium. Diabetic patients are more likely to suffer severe AP. Serum calcium and D-dimer are independent predictors for pancreatic necrosis. Furthermore, low serum calcium, high D-dimer levels, younger age and female sex are independent risk factors for pancreatic necrosis in AP patients with diabetes.
Tidal Disruption of a Solar Type Star by a Super-Massive Black Hole
Creators: name: Ayal, S.
name: Livio, M.
name: Piran, T.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We study the long term evolution of a solar type star that is being disrupted by a super massive (10^6 solar mass) black hole. The evolution is followed from the disruption event, which turns the star into a long thin stream of gas, to the point where some of this gas returns to pericenter and begins its second orbit around the black hole. Following the evolution for this long allows us to determine the amount of mass that is accreted by the black hole. We find that approximately 75% of the returning mass is not accreted but instead becomes unbound, following the large compression characterizing the return to pericenter. The impact of a tidal disruption on the surrounding gas may therefore be like that of two consecutive supernove-type events.
description: 19 pages, 13 figures, Revised version as accepted by ApJ. High resolution figures available at http://merger.phys.huji.ac.il/~shai/last_pages.ps.gz (1.2 MB)
Reporting Islam in Non-Western Newspapers: A News Framing Analysis
Creators: name: Isyaku Hassan
name: Mohd Nazri Latiff Azmi
name: Abubakar, Usman Ibrahim
Publisher: name: Zenodo
Year: 2021
Subjects: Content analysis
framing
Islam
language
newspaper
news reporting

description: The media attention to Islam has increased over the past few decades, but meeting the quality standards in reporting the region is of great concern. This is because the media tend to highlight prejudice in news reporting of Islam. Therefore, this study aims to explore how non-western newspapers frame Islam in news reporting. Using purposive sampling, Punch and Vanguard were chosen from Nigeria while The Star and New Straits Times were chosen from Malaysia based on their popularity and readership. A total of 599 news articles focusing on Islam or Muslims were collected from the selected newspapers using an internet-based search from November 2015 until September 2016. These news articles were subjected to content analysis to explore how Islam is framed in the selected newspapers. The findings showed that more than one-third (41.6%) of the overall Islam-related articles reported Islam using human interest frames and more than one-third (38.1%) of the articles used conflict frames. Further analysis of the findings revealed that Nigerian newspapers used more conflict frames (48.9%) in reporting Islam compared to Malaysian newspapers (30.4%). It was envisaged that the findings of this study would advance our understanding of how non-western media frame Islam in news reporting.
Blaesoxipha (Gigantotheca) plinthopyga
Creators: name: Andrade-Herrera, Kepler Nils
name: Mello-Patiu, Cátia Antunes de
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Sarcophagidae
Blaesoxipha
Blaesoxipha plinthopyga

description: Blaesoxipha (Gigantotheca) plinthopyga (Wiedemann, 1830) *†
 Material examined: PIURA – Piura, Castilla, Caserío Miraflores, 32 m (05°10′00.51″S, 80°36′51.27″W), 20.vi.2017, guinea pig carcass, 2 ♂ K. Andrade leg.; PIURA – Huancabamba, Quispampa bajo, 2,088 m (05°15′15.5″S, 79°27′02.6″W), 27.vii.2019, dog carcass, 1 ♂, K.Andrade & R. García leg.
 World distribution: American Virgin Islands, Bahamas, Brazil, Colombia, Costa Rica, Cuba, Dominica, Dominican Republic, El Salvador, Galápagos Islands, Great Antilles, Guatemala, Guyana, Hawaiian Island, Jamaica, Lesser Antilles, Mexico, Nicaragua, Panama, Puerto Rico, USA, Venezuela (Pape, 1996; Pape et al., 2004; Salazar-Ortega et al., 2012; Mello-Patiu, 2016).
 Distribution in Peru: This is new record for Piura and Peru.
 Remarks: Registered in pig carcasses (Mello-Patiu et al., 2014a), rat (Beuter et al., 2012), snake (Andrade-Herrera et al., 2020) and human corpse (Wells & Smith, 2013).
description: Published as part of Andrade-Herrera, Kepler Nils & Mello-Patiu, Cátia Antunes de, 2022, Contribution to the knowledge of flesh flies (Diptera: Sarcophagidae: Sarcophaginae) attracted to carcasses in Piura, Peru, pp. 1-5 in Papéis Avulsos de Zoologia 62 on page 2, DOI: 10.11606/1807-0205/2022.62.012, http://zenodo.org/record/7176985
Fringe visibility and distinguishability in two-path interferometer with an asymmetric beam splitter
Creators: name: Liu, Yanjun
name: Lu, Jing
name: Peng, Zhihui
name: Zhou, Lan
name: Zheng, Dongning
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the fringe visibility and the distinguishability of a general Mach-Zehnder interferometer with an asymmetric beam splitter. Both the fringe visibility V and the distinguishability D are affected by the input state of the particle characterized by the Bloch vector S=(Sx,Sy,Sz) and the second asymmetric beam splitter characterized by paramter /beta. For the total system is initially in a pure state, it is found that the fringe visibility reaches the upper bound and the distinguishability reaches the lower bound when cos(/beta) = -Sx. The fringe visibility obtain the maximum only if Sx = 0 and /beta = /pi/2 when the input particle is initially in a mixed state. The complementary relationship V2 + D2 <= 1 is proved in a general Mach-Zehnder interferometer with an asymmetric beam splitter, and the conditions for the equality are also presented.
description: 5 pages, 3 figures
Peptide Nucleic Acids (PNA) as a versatile tool for modulation of biological systems with visible light
Creators: name: Bantle, Tobias
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2021
Subjects: PNA
Nucleobases
solid phase paptide synthesis
Artificial DNA/ articicial RNA
photoswitches
Spiropyrans
Azobenzenes

description: Das Hauptziel dieser Arbeit war die Kombination neuartiger photoschaltbarer Moleküle, die möglicherweise im Bereich des sichtbaren Lichts operieren, mit PNA (Peptidonukleinsäuren) - künstlichen Oligonukleotidanaloga mit hoher Hybridisierungsaffinität und Sequenzselektivität gegenüber komplementären DNA- und RNA-Strängen. Die Bindung ist so stark, dass unter optimalen Bedingungen Genexpressionen (Antigene) und Übersetzungen in Proteine (Antisense) in vivo verhindert werden können. Aufgrund einer hochspezifischen Hybridisierung mit einem Oligomer von >10 Nukleobasen können kurze PNA-Oligomere selektiv auf bestimmte Ziele innerhalb lebender Zellen oder Organismen abzielen, ohne die übrige biosynthetische Maschiner ie der Zelle zu stören. Das langfristige Ziel dieser Arbeit war die Implementierung photoschaltbarer Einheiten, wie das Azobenzol oder ein Spiropyran, um ein reversibles Schalten des Antigens oder des Antisense- Effekts mit sichtbarem Licht zu erreichen. In einem Nachfolgeprojekt wurde die PNA für Untersuchungen gegen das HIV (humanes Immunschwächevirus) eingesetzt. HIV verursacht AIDS, eine der derzeit anspruchsvollsten Krankheiten. Das Virus selbst greift das Immunsystem an und vernichtet es systematisch. Da das Virus unsere DNA benutzt, um sich zu reproduzieren, wird es nicht als "Eindringling" erkannt. Es breitet sich leicht aus, und eine kommerziell verfügbare Heilung ist noch nicht bekannt, obwohl kürzlich eingeführte antiretrovirale Therapien die Virusmenge vorübergehend unter die Nachweisgrenze senken können. Die derzeitige Hypothese ist, dass das Virus irgendwo im Organismus konserviert wird, wo es von den üblichen Medikamenten nicht erreicht werden kann. Da es Fluoreszenzfarbstoffe gibt, die eine Erhöhung der Fluoreszenzintensität (einen Aufhellungseffekt) zeigen, während sie innerhalb eines Doppel-Oligonukleotidstra ngs (RNA/RNA; RNA/DNA; DNA/DNA; PNA/DNA; PNA/RNA) hybridisiert sind, haben wir versucht, ein analytisches Werkzeug zum Nachweis von HIV-RNA zu konstruieren. Die fluoreszierende Lokalisierung der HI-Viren würde wiederum dazu beitragen, Medikamente zu entwickeln, die die letzten Reservoire des Virus erreichen und es effizient aus dem Organismus ausrotten können. Die Region der HIV-RNA, auf die wir mit PNA-Sequenzen abzielen wollen, ist bekanntlich die wichtigste Region für die Vermehrung. Eine Blockierung dieser Region mit einer komplementären PNA würde verhindern, dass sie die richtige Faltung annimmt. Dies würde zu einem Knockdown führen, was die weitere Ausbreitung des Virus behindern würde. Eine andere Strategie bestand darin, das Ende der PNA-Sequenzen mit einer chemischen Ribonuklease zu dekorieren. Ein solches PNA-Oligomer würde die komplementäre RNA sequenzspezifisch ausschneiden und so die RNA des Virus und damit das Virus selbst zerstören.
Neutron diffraction study of stripe order in La(2)NiO(4+d) with d=2/15
Creators: name: Wochner, P.
name: Tranquada, J. M.
name: Buttrey, D. J.
name: Sachan, V.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report a detailed neutron scattering study of the ordering of spins and holes in oxygen-doped La(2)NiO(4.133). The single-crystal sample exhibits the same oxygen-interstitial order but better defined charge-stripe order than that studied previously in crystals with d = 0.125. In particular, charge order is observed up to a temperature at least twice that of the magnetic transition, T_m = 110.5 K. On cooling through T_m, the wave vector ε, equal to half the charge-stripe density within an NiO(2) layer, jumps discontinuously from 1/3 to 0.2944. It continues to decrease with further cooling, showing several lock-in transitions on the way down to low temperature. To explain the observed lock-ins, a model is proposed in which each charge stripe is centered on either a row of Ni or a row of O ions. The model is shown to be consistent with the l-dependence of the magnetic peak intensities and with the relative intensities of the higher-order magnetic satellites. Analysis of the latter also provides evidence that the magnetic domain walls (charge stripes) are relatively narrow. In combination with a recent study of magnetic-field-induced effects, we find that the charge stripes are all O-centered at T>T_m, with a shift towards Ni centering at T
description: ReVTeX, 17 2-col pages, 10 eps figs. embedded with psfig, submitted to Phys. Rev. B
Collaborative and Reflective Practices through Project Approach in Early Years Setting
Creators: name: Masayu Dzainudin
name: Hamidah Yamat
name: Yunus, Faridah
Publisher: name: Zenodo
Year: 2021
Subjects: Collaborative
reflective
project approach
early childhood education
action research
teaching and learning

description: The role of collaborative and reflective practices is significant as they help improve teaching and learning in today’s technological dependent environment. This study aims to present and discuss an explorative study on early childhood educational practices of employing the Project Approach (PA) to demonstrate the collaborative work between researchers and practitioners as well as the reflective practices. The study employed an Action Research design involving the researcher, two preschool teachers and six children. Data were gathered through observations, interview and reflective journals. Four objectives were set according to the phases of an action research to: i) observe the existing teaching and learning practices; ii) train teachers to be critical reflectors; iii) do a simulation of project work with children at the fieldwork; and iv) critically reflect the collaborative practice in PA. Findings observed the collaboration and reflective practices between the researcher and the teachers transformed the teacher centred approach to a more child-centred as more opportunity for adult-children interactions were provided. The teachers became more responsive towards the children's needs. It can be concluded that with the right methods and tools provided in the training of teachers, teaching practices can be altered to enhance learning.
Ordinal Monte Carlo Tree Search
Creators: name: Joppen, Tobias
name: Fürnkranz, Johannes
Publisher: name: arXiv
Year: 2019
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In many problem settings, most notably in game playing, an agent receives a possibly delayed reward for its actions. Often, those rewards are handcrafted and not naturally given. Even simple terminal-only rewards, like winning equals 1 and losing equals -1, can not be seen as an unbiased statement, since these values are chosen arbitrarily, and the behavior of the learner may change with different encodings, such as setting the value of a loss to -0:5, which is often done in practice to encourage learning. It is hard to argue about good rewards and the performance of an agent often depends on the design of the reward signal. In particular, in domains where states by nature only have an ordinal ranking and where meaningful distance information between game state values are not available, a numerical reward signal is necessarily biased. In this paper, we take a look at Monte Carlo Tree Search (MCTS), a popular algorithm to solve MDPs, highlight a reoccurring problem concerning its use of rewards, and show that an ordinal treatment of the rewards overcomes this problem. Using the General Video Game Playing framework we show a dominance of our newly proposed ordinal MCTS algorithm over preference-based MCTS, vanilla MCTS and various other MCTS variants.
description: preview
Eternal inflation, black holes, and the future of civilizations
Creators: name: Garriga, J.
name: Mukhanov, V. F.
name: Olum, K. D.
name: Vilenkin, A.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the large-scale structure of the universe in inflationary cosmology and the implications that it may have for the long-term future of civilizations. Although each civilization is doomed to perish, it may be possible to transmit its accumulated knowledge to future civilizations. We consider several scenarios of this sort. If the cosmological constant is positive, it eventually dominates the universe and bubbles of inflationary phase begin to nucleate at a constant rate. Thermalized regions inside these inflating bubbles will give rise to new galaxies and civilizations. It is possible in principle to send a message to one of them. It might even be possible to send a device whose purpose is to recreate an approximation of the original civilization in the new region. However, the message or device will almost certainly be intercepted by black holes, which nucleate at a much higher rate than inflating bubbles. Formation of new inflating regions can also be triggered by gravitational collapse, but again the probability is low, and the number of attempts required for a positive outcome is enormous. The probability can be higher if the energy scale of inflation is closer to the Planck scale, but a high energy scale produces a tight bound on the amount of information that can be transmitted. One can try to avoid quantum tunneling altogether, but this requires a violation of quantum inequalities which constrain the magnitude of negative energy densities. However, the limits of validity of quantum inequalities are not clear, and future research may show that the required violation is in fact possible. Therein lies the hope for the future of civilizations.
description: RevTeX, 14 pages, 6 figures. Minor corrections, improved figures
title: Kwartalnik Prawno-Finansowy - Słowo wstępne
Creators: name: Miemiec, Wieslawa
Publisher: name: Uniwersytet Wrocławski. Wydział Prawa, Administracji i Ekonomii
Year: 2018

description: Tematyka czasopisma ma obejmować prawo finansów publicznych, prawo podatkowe i prawo rynku finansowego, ale także zagadnienia finansów publicznych. Za cel stawiamy sobie poszukiwanie i wskazywanie problemów badawczych w tym obszarze regulacji prawnej, jak również problemów badawczych z obszaru finansów publicznych. W szybko zmieniającej się rzeczywistości społecznej i gospodarczej system prawa zmienia się równie szybko. Dlatego też stworzenie forum, na którym będzie się mogła rozwijać współpraca naukowa z krajowymi i zagranicznymi instytucjami i ośrodkami akademickimi oraz z instytucjami państwowymi i samorządowymi, jest z pewnością celowe – zarówno z punktu widzenia teoretyków, jak i praktyków (fragment ze wstępu)