cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
CAD_bioreactor_front_view.pdf from Nutrients and flow shape the cyclic dominance games between Escherichia coli strains
Creators: name: Kuhn, Thierry
name: Pilar, Junier
name: Bshary, Redouan
name: Terrettaz, Céline
name: Gonzalez, Diego
name: Richter, Xiang-Yi Li
Publisher: name: The Royal Society
Year: 2023
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Ecology
subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: Computational Biology
subject: 10202 Biological Mathematics
subject: FOS: Mathematics

description: CAD drawing of the mini-bioreactor – front view
Depletion of molecular gas by an accretion outburst in a protoplanetary disk
Creators: name: Banzatti, A.
name: Pontoppidan, K. M.
name: Bruderer, S.
name: Muzerolle, J.
name: Meyer, M. R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate new and archival 3-5 $μ$m high resolution ($\sim3$ km s$^{-1}$) spectroscopy of molecular gas in the inner disk of the young solar-mass star EX Lupi, taken during and after the strong accretion outburst of 2008. The data were obtained using the CRIRES spectrometer at the ESO Very Large Telescope in 2008 and 2014. In 2008, emission lines from CO, H$_{2}$O, and OH were detected with broad profiles tracing gas near and within the corotation radius (0.02-0.3 AU). In 2014, the spectra display marked differences. The CO lines, while still detected, are much weaker, and the H$_{2}$O and OH lines have disappeared altogether. At 3 $μ$m a veiled stellar photospheric spectrum is observed. Our analysis finds that the molecular gas mass in the inner disk has decreased by an order of magnitude since the outburst, matching a similar decrease in the accretion rate onto the star. We discuss these findings in the context of a rapid depletion of material accumulated beyond the disk corotation radius during quiescent periods, as proposed by models of episodic accretion in EXor type young stars.
description: 6 pages, 4 figures, 1 table, accepted for publication in the Astrophysical Journal Letters
การพัฒนาชุดฝึกอบรมผ่านเครือข่ายอินเทอร์เน็ต เรื่อง หลักการออกแบบบทเรียนออนไลน์ สำหรับนักศึกษาบัณฑิตศึกษา แขนงวิชาเทคโนโลยีและสื่อสารการศึกษา สาขาวิชาศึกษาศาสตร์ มหาวิทยาลัยสุโขทัยธรรมาธิราช
Creators: name: ศันสนีย์ สังสรรค์อนันต์
Publisher: name: ศูนย์สนับสนุนและพัฒนาการเรียนการสอน มหาวิทยาลัยรังสิต
Year: 2012
Subjects: Educational Technology and Communication
Graduate Students
Internet-based Training Package
Online learning
ชุดฝึกอบรมผ่านเครือข่ายอินเทอร์เน็ต
นักศึกษาบัณฑิตศึกษา
วิชาเทคโนโลยีและสื่อสารการศึกษา
หลักการออกแบบบทเรียนออนไลน์

description: วารสารพัฒนาการเรียนการสอน, 6, 2, 56-71
ความคิดเห็นและการยอมรับการเรียนการสอนด้วยบทเรียนบนเครือข่ายอินเทอร์เน็ต ของนักศึกษาระดับปริญญาตรี มหาวิทยาลัยราชภัฏนครศรีธรรมราช
Creators: name: อรวรรณ ระย้า
Publisher: name: ศูนย์สนับสนุนและพัฒนาการเรียนการสอน มหาวิทยาลัยรังสิต
Year: 2012
Subjects: Acceptance
Instruction
Opinions
Web-Based Instruction
การยอมรับ
การเรียนการสอน
ความคิดเห็น
บทเรียนผ่านเครือข่ายอินเทอร์เน็ต

description: วารสารพัฒนาการเรียนการสอน, 6, 2, 72-82
มาตรฐานครูภาษาอังกฤษยุคใหม่จะไปในทิศทางไหน
Creators: name: ศิตา เยี่ยมขันติถาวร
Publisher: name: ศูนย์สนับสนุนและพัฒนาการเรียนการสอน มหาวิทยาลัยรังสิต
Year: 2012
Subjects: -

description: วารสารพัฒนาการเรียนการสอน, 6, 2, 84-96
title: Endophytes in commercial micropropagation - friend or foe?
Creators: name: Rödel, Philipp
name: Hutter, Imke
name: Schneider, Carolin
Publisher: name: Julius Kühn-Institut
Year: 2016
Subjects: subject: endophytes
subject: rhizobacteria
subject: mycorrhiza
subject: inoculation
subject: micropropagation

description: Julius-Kühn-Archiv 453
description: Medicinal and aromatic plants are superorganisms like all plant species- naturally colonized by bacteria, fungi and protists. Micropropagated plants are facing different challenges under in vitro and ex vitro conditions: Mixotrophic growth under low light conditions on artificial nutrient media, poor gas exchange in small vessels, abiotic stress, bad rooting, transplanting stress, low survival rate during acclimatization in greenhouse. The use of endophytes in micropropagation can improve plant growth, yield, and health and induce tolerance to abiotic and biotic stress. A tool for the use of competent endophytes in micropropagation under in vitro and ex vitro conditions is “biotization” of plantlets with useful bacterial and fungal inocula. Fungal inocula which are used commercially are e.g. arbuscular mycorrhizal fungi) in form of spores and extraradical mycelium on different carrier materials like expanded clay, vermiculite, sand or peat. Furthermore representatives of the root fungal genus Trichoderma are applied as spores formulated in powder. Plantgrowth promoting rhizobacteria of the important genera Bacillus, Pseudomonas, Azospirillum and Azotobacter in form of lyophilised endospores/bacterial cells in powder or liquid formulation are also available on the market.
Analyses of microstructural and elastic properties of porous SOFC cathodes based on focused ion beam tomography
Creators: name: Chen, Zhangwei
name: Wang, Xin
name: Giuliani, Finn
name: Atkinson, Alan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences
subject: 74K35

description: Mechanical properties of porous SOFC electrodes are largely determined by their microstructures. Measurements of the elastic properties and microstructural parameters can be achieved by modelling of the digitally reconstructed 3D volumes based on the real electrode microstructures. However, the reliability of such measurements is greatly dependent on the processing of raw images acquired for reconstruction. In this work, the actual microstructures of La0.6Sr0.4Co0.2Fe0.8O3-d (LSCF) cathodes sintered at an elevated temperature were reconstructed based on dual-beam FIB/SEM tomography. Key microstructural and elastic parameters were estimated and correlated. Analyses of their sensitivity to the grayscale threshold value applied in the image segmentation were performed. The important microstructural parameters included porosity, tortuosity, specific surface area, particle and pore size distributions, and inter-particle neck size distribution, which may have varying extent of effect on the elastic properties simulated from the microstructures using FEM. Results showed that different threshold value range would result in different degree of sensitivity for a specific parameter. The estimated porosity and tortuosity were more sensitive than surface area to volume ratio. Pore and neck size were found to be less sensitive than particle size. Results also showed that the modulus was essentially sensitive to the porosity which was largely controlled by the threshold value.
description: 21 pages, 14 figures, 2 tables, journal paper published in Journal of Power Sources
Can a void mimic the $Λ$ in $Λ$CDM?
Creators: name: Sundell, Peter
name: Mörtsell, Edvard
name: Vilja, Iiro
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate Lemaître-Tolman-Bondi (LTB) models, whose early time evolution and bang time are homogeneous and the distance - redshift relation and local Hubble parameter are inherited from the $Λ$CDM model. We show that the obtained LTB models and the $Λ$CDM model predict different relative local expansion rates and that the Hubble functions of the models diverge increasingly with redshift. The LTB models show tension between low redshift baryon acoustic oscillation and supernova observations and including Lyman-$α$ forest or cosmic microwave background observations only accentuates the better fit of the $Λ$CDM model compared to the LTB model. The result indicates that additional degrees of freedom are needed to explain the observations, for example by renouncing spherical symmetry, homogeneous bang time, negligible effects of pressure, or the early time homogeneity assumption.
description: 27 pages, 11 figures
Sensitivity and open-loop control of stochastic response in a noise amplifier flow: the backward-facing step
Creators: name: Boujo, Edouard
name: Gallaire, François
Publisher: name: arXiv
Year: 2014
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The two-dimensional backward-facing step flow is a canonical example of noise amplifier flow: global linear stability analysis predicts that it is stable, but perturbations can undergo large amplification in space and time as a result of non-normal effects. This amplification potential is best captured by optimal transient growth analysis, optimal harmonic forcing, or the response to sustained noise. In view of reducing disturbance amplification in these globally stable open flows, a variational technique is proposed to evaluate the sensitivity of stochastic amplification to steady control. Existing sensitivity methods are extended in two ways to achieve a realistic representation of incoming noise: (i) perturbations are time-stochastic rather than time-harmonic, (ii) perturbations are localised at the inlet rather than distributed in space. This allows for the identification of regions where small-amplitude control is the most effective, without actually computing any controlled flows. In particular, passive control by means of a small cylinder and active control by means of wall blowing/suction are analysed for Reynolds number $Re=500$ and step-to-outlet expansion ratio $Γ=0.5$. Sensitivity maps for noise amplification appear largely similar to sensitivity maps for optimal harmonic amplification at the most amplified frequency. This is observed at other values of $Re$ and $Γ$ too, and suggests that the design of steady control in this noise amplifier flow can be simplified by focusing on the most dangerous perturbation at the most dangerous frequency.
description: 31 pages, 24 figures
A model for dark matter, naturalness and a complete gauge unification
Creators: name: Kainulainen, Kimmo
name: Tuominen, Kimmo
name: Virkajärvi, Jussi
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We consider dark matter in a minimal extension of the Standard Model (SM) which breaks electroweak symmetry dynamically and leads to a complete unification of the SM and technicolor coupling constants. The unification scale is determined to be $M_{\rm U} \approx 2.2 \times 10^{15}$ GeV and the unified coupling $α_{\rm U} \approx 0.0304$. Moreover, unification strongly suggest that the technicolor sector of the model must become strong at the scale of ${\cal O}$(TeV). The model also contains a tightly constrained sector of mixing neutral fields stabilized by a discrete symmetry. We find the lightest of these states can be DM with a mass in the range $m_{\rm DM} \approx 30-800$ GeV. We find a large set of parameters that satisfy all available constraints from colliders and from dark matter search experiments. However, most of the available parameter space is within the reach of the next generation of DM search experiments. The model is also sensitive to a modest improvement in the measurement of the precision electroweak parameters.
description: v2: Few typos corrected and few comments added, match with the published version. 26 pages, 8 figures
title: Improvement Opportunities in the Two-Source Energy Balance Model for ET using UAV Imagery and Point Cloud Information
Creators: name: Aboutalebi, Mahyar
Publisher: name: Utah State University
Year: 2021

description: In recent years, satellites and unmanned aerial vehicles (UAVs) provide enormous amounts of spatially-distributed information for monitoring crop conditions by measuring crop’s reflected and emitted radiation at a distance. However, applications of high-resolution UAV imagery and its intermediate products for improving crop water use estimates are not well studied. In other words, the available approaches, methods and algorithms for determining how much water to apply for irrigation using remotely sensed data have been mostly developed at satellite spatial resolutions. High-resolution imageries that have been achieved by small UAVs open new opportunities for revisiting, re-evaluating, and revising available crop water use methods. In this study, different aspects of opportunities of UAV high-resolution imagery for enhancing remote sensing crop water use models, notably the Two-Source Energy Balance model (TSEB), over a commercial vineyard located in California are presented. In particular, this dissertation presents the impact of shadows, leaf area index (LAI) modeled from UAV 3D information, and higher-resolution temperature on the TSEB model. The high-resolution spatially-distributed crop water use derived by integration of UAV imagery into the TSEB model provides the capability to visualize spatial variations of crop water use at a compatible resolution with irrigation systems. This information is an essential part of scheduling irrigation with greater precision.
Supplementary material for 'Evolutionarily stable preferences'
Creators: name: Alger, Ingela
Publisher: name: The Royal Society
Year: 2023
Subjects: subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: The 50-year old concept of an evolutionarily stable strategy provided a key tool for theorists to model ultimate drivers of behaviour in social interactions. For decades, economists ignored ultimate drivers and used models in which individuals choose strategies based on their preferences—a proximate mechanism for behaviour—and the distribution of preferences in the population was taken to be fixed and given. This article summarizes some key findings in the literature on evolutionarily stable preferences, which in the past three decades has proposed models that combine the two approaches: individuals inherit their preferences, the preferences determine their strategy choices, which in turn determines evolutionary success. One objective is to highlight complementarities and potential avenues for future collaboration between biologists and economists.This article is part of the theme issue ‘Half a century of evolutionary games: a synthesis of theory, application and future directions’.
บทบาทผู้สอนตามระบบการศึกษาในปัจจุบัน
Creators: name: เจนศึก โพธิศาสตร์
Publisher: name: ศูนย์สนับสนุนและพัฒนาการเรียนการสอน มหาวิทยาลัยรังสิต
Year: 2012
Subjects: -

description: วารสารพัฒนาการเรียนการสอน, 6, 2, 97-108
Threats to the concept of social justice
Creators: name: Ranjan, Pramod
Publisher: name: figshare
Year: 2022
Subjects: subject: 160510 Public Policy
subject: FOS: Political science
subject: 160803 Race and Ethnic Relations
subject: FOS: Sociology
subject: 160805 Social Change
subject: 160512 Social Policy
subject: 160806 Social Theory
subject: 220319 Social Philosophy
subject: FOS: Philosophy, ethics and religion
subject: Sociology

description: In this paper, I have tried to define social justice in the Indian context and about the dangers shadowing its basic concept. Social justice means providing justice to all those people who have had to face injustice having been subject to some form of dominance. They may have had to face injustice due to their varna, ethnicity, profession, gender, economic status, region, religion, tradition, language or physique. Social justice, basically, is an incessant battle against privileges based meritocracy. Humanism and compassion are the cornerstones of this battle. The idea of securing an equal opportunity for all and the theory of social diversity are its sword and rifle. But today, the politics of social justice has come to mean electoral victories of a few people hailing from deprived communities. At the systemic level, it has been confined to reservations in government jobs and in government-run institutions of higher learning that, more often than not, provide low-quality education. At the most, some people demand that reservations should be extended to the private sector. This is considered the be-all and end-all of the battle for social justice.
How Does Author Affiliation Affect Preprint Citation Count? Analyzing Citation Bias at the Institution and Country Level
Creators: name: Nishioka, Chifumi
name: Färber, Michael
name: Saier, Tarek
Publisher: name: arXiv
Year: 2022
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: Citing is an important aspect of scientific discourse and important for quantifying the scientific impact quantification of researchers. Previous works observed that citations are made not only based on the pure scholarly contributions but also based on non-scholarly attributes, such as the affiliation or gender of authors. In this way, citation bias is produced. Existing works, however, have not analyzed preprints with respect to citation bias, although they play an increasingly important role in modern scholarly communication. In this paper, we investigate whether preprints are affected by citation bias with respect to the author affiliation. We measure citation bias for bioRxiv preprints and their publisher versions at the institution level and country level, using the Lorenz curve and Gini coefficient. This allows us to mitigate the effects of confounding factors and see whether or not citation biases related to author affiliation have an increased effect on preprint citations. We observe consistent higher Gini coefficients for preprints than those for publisher versions. Thus, we can confirm that citation bias exists and that it is more severe in case of preprints. As preprints are on the rise, affiliation-based citation bias is, thus, an important topic not only for authors (e.g., when deciding what to cite), but also to people and institutions that use citations for scientific impact quantification (e.g., funding agencies deciding about funding based on citation counts).
description: Accepted at the ACM/IEEE Joint Conference on Digital Libraries (JCDL) 2022
Crack Formation in Ceramic Films Used in Solid Oxide Fuel Cells
Creators: name: Wang, Xin
name: Chen, Zhangwei
name: Atkinson, Alan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences
subject: 74A05

description: The manufacture of solid oxide fuel cells (SOFCs) involves fabrication of a multilayer ceramic structure, for which constrained sintering is a key processing step in many cases. Defects are often observed in the sintered structure, but their formation during sintering is not well understood. In this work, various ceramic films were fabricated by screen printing and a variety of defects observed. Some films showed mud-cracking defects, whereas others presented distributed large pores. Mud cracking defects were found to originate from a network of fine cracks present in the green film and formed during drying and binder burn-out. Control of these early stages is essential for producing crack-free films. In order to investigate how defects evolve during sintering, artificial cracks were introduced in the green films using indentation. It was observed that crack opening always increased during constrained sintering. In contrast, similar initial cracks could be closed and healed during co-sintering.
description: 12 figures, 1 table
Generation of gravitational waves from freely decaying turbulence
Creators: name: Auclair, Pierre
name: Caprini, Chiara
name: Cutting, Daniel
name: Hindmarsh, Mark
name: Rummukainen, Kari
name: Steer, Danièle A.
name: Weir, David J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the stochastic gravitational wave background (SGWB) produced by freely decaying vortical turbulence in the early Universe. We thoroughly investigate the time correlation of the velocity field, and hence of the anisotropic stresses producing the gravitational waves. With hydrodynamical simulations, we show that the unequal time correlation function (UETC) of the Fourier components of the velocity field is Gaussian in the time difference, as predicted by the "sweeping" decorrelation model. We introduce a decorrelation model that can be extended to wavelengths around the integral scale of the flow. Supplemented with the evolution laws of the kinetic energy and of the integral scale, this provides a new model UETC of the turbulent velocity field consistent with the simulations. We discuss the UETC as a positive definite kernel, and propose to use the Gibbs kernel for the velocity UETC as a natural way to ensure positive definiteness of the SGWB. The SGWB is given by a 4-dimensional integration of the resulting anisotropic stress UETC with the gravitational wave Green's function. We perform this integration using a Monte Carlo algorithm based on importance sampling, and find that the result matches that of the simulations. Furthermore, the SGWB obtained from the numerical integration and from the simulations show close agreement with a model in which the source is constant in time and abruptly turns off after a few eddy turnover times. Based on this assumption, we provide an approximate analytical form for the SGWB spectrum and its scaling with the initial kinetic energy and integral scale. Finally, we use our model and numerical integration algorithm to show that including an initial growth phase for the turbulent flow heavily influences the spectral shape of the SGWB. This highlights the importance of a complete understanding of the turbulence generation mechanism.
description: 54 pages, 30 figures
Björk-Sjölin condition for strongly singular convolution operators on graded Lie groups
Creators: name: Cardona, Duván
name: Ruzhansky, Michael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Functional Analysis (math.FA)
subject: Analysis of PDEs (math.AP)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: In this work we extend the $L^1$-Björk-Sjölin theory of strongly singular convolution operators to arbitrary graded Lie groups. Our criteria are presented in terms of the oscillating Hörmander condition due to Björk and Sjölin of the kernel of the operator, and the decay of its group Fourier transform is measured in terms of the infinitesimal representation of an arbitrary Rockland operator. The historical result by Björk and Sjölin is re-obtained in the case of the Euclidean space.
description: 22 Pages. arXiv admin note: text overlap with arXiv:2201.12881
A study of the interface usability issues of mobile learning applications for smart phones from the users perspective
Creators: name: Ali, Abdalha
name: Alrasheedi, Muasaad
name: Ouda, Abdelkader
name: Capretz, Luiz Fernando
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computers and Society (cs.CY)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: A conceptual framework for measuring the usability characteristics of mobile learning (m-Learning) application has been developed. Furthermore, a software prototype for smartphones to assess usability issues of m-Learning applications has also been designed and implemented. This prototype has been developed, using Java language and the Android Software Development Kit, based on the recommended guidelines of the proposed conceptual framework. The usability of the proposed model was compared to a generally available similar mobile application (based on the Blackboard) by conducting a questionnairebased survey at Western University. The two models were evaluated in terms of ease of use, user satisfaction, attractiveness, and learnability. The results of the questionnaire showed that the participants considered the user interface based on our proposed framework more user-friendly as compared to the Blackboard-based user interface.
description: 16 pages, 7 figures, 5 tables, and 31 conferences. in International Journal on Integrating Technology in Education (IJITE) Vol.3, No.4, December 2014
Supplementary figure S1 from Hermaphroditic origins of anisogamy
Creators: name: Henshaw, Jonathan M.
name: Bittlingmaier, Markus
name: Schärer, Lukas
Publisher: name: The Royal Society
Year: 2023
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: 60801 Animal Behaviour
subject: 10202 Biological Mathematics
subject: FOS: Mathematics

description: Proportions of monoecious individuals when there is no advantage to specialising in one gamete type
Mixing effects on 1S and 2S state heavy mesons in the light-front quark model
Creators: name: Arifi, Ahmad Jafar
name: Choi, Ho-Meoyng
name: ji, Chueng-Ryong
name: Oh, Yongseok
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The mass spectra and wave functions of both $1S$ and $2S$ state heavy pseudoscalar ($P$) and vector ($V$) mesons are analyzed within the light-front quark model. Important empirical constraints employed in our analysis of the mass spectra and wave functions are the experimental mass-gap relation, $ΔM_P > ΔM_V$, where $ΔM_{P(V)}=M^{2S}_{P(V)}-M^{1S}_{P(V)}$ and the hierarchy of the decay constants, $f_{1S}>f_{2S}$, between $1S$ and $2S$ meson states. We maintain the orthogonality of the trial wave functions of the $1S$ and $2S$ states in our variational calculation of the Hamiltonian with the Coulomb plus confining potentials and treat the hyperfine interaction perturbatively for the heavy-heavy and heavy-light $P$ and $V$ mesons due to the nature of the heavy quark symmetry. Realizing that the empirical constraints cannot be satisfied without mixing of the $1S$ and $2S$ states, we find the lower bound of the mixing angle $θ$ between $1S$ and $2S$ states as $θ_c = {\rm cot}^{-1}(2\sqrt{6})/2\simeq 6^{\circ}$ and obtain the optimum value of the mixing angle around $12^\circ$ to cover both the charm and bottom flavors of the heavy quark. The mixing effects are found to be more significant to the $2S$ state mesons than to the $1S$ state mesons. The properties of $1S$ and $2S$ state mesons including the mass spectra, decay constants, twist-2 distribution amplitudes, and electromagnetic form factors are computed. Our results are found to be in a good agreement with the available data and lattice simulations. In particular, the $2S$ state pseudoscalar $D_s$ meson is predicted to have a mass of $2600$ MeV, which is very close to the mass of the newly discovered $D_{s0}(2590)^+$ meson by the LHCb Collaboration. This supports the interpretation of the observed state as a radial excitation of the $D^+_s$ meson.
description: 17 pages, 8 figures, 6 tables. Comments are welcome
การเปรียบเทียบผลสัมฤทธิ์ทางการเรียน การคิดแก้ปัญหา และเจตคติต่อการเรียน วิชาฟิสิกส์ ของนักเรียนชั้นมัธยมศึกษาปีที่ 4 ระหว่างการจัดกิจกรรมการเรียนรู้แบบ สืบเสาะหาความรู้ 7 ขั้น และการจัดการเรียนรู้โดยใช้ปัญหาเป็นฐาน
Creators: name: ขวัญตา แสวงผล
Publisher: name: ศูนย์สนับสนุนและพัฒนาการเรียนการสอน มหาวิทยาลัยรังสิต
Year: 2014
Subjects: 7E Inquiry
Attitudes toward Learning
Problem-Based Learning
Problem-Solving
การคิดแก้ปัญหา
การสืบเสาะหาความรู้ 7 ขั้น
การเรียนรู้โดยใช้ปัญหาเป็นฐาน
เจตคติต่อการเรียน

description: วารสารพัฒนาการเรียนการสอน, 8, 1, 10-24
title:  Carlo Crosato – Critica della sovranità. Foucault e Agamben. Tra il superamento della teoria moderna della sovranità e il suo ripensamento in chiave ontologica
Creators: name: Goisis  ,  Giuseppe
Publisher: name: Roma TrE-Press
Year: 2019

description: B@belonline vol. 5 Ernst Bloch e il principio utopico ieri e oggi
First results of the nuGeN experiment on coherent elastic neutrino-nucleus scattering
Creators: name: Alekseev, I.
name: Balej, K.
name: Belov, V.
name: Evseev, S.
name: Filosofov, D.
name: Fomina, M.
name: Hons, Z.
name: Karaivanov, D.
name: Kazartsev, S.
name: Khushvaktov, J.
name: Kuznetsov, A.
name: Lubashevskiy, A.
name: Medvedev, D.
name: Ponomarev, D.
name: Rakhimov, A.
name: Shakhov, K.
name: Shevchik, E.
name: Shirchenko, M.
name: Smolek, K.
name: Rozov, S.
name: Rozova, I.
name: Vasilyev, S.
name: Yakushev, E.
name: Zhitnikov, I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The nuGeN experiment is aimed to investigate neutrino properties using antineutrinos from the reactor of the Kalinin Nuclear Power Plant. The experimental setup is located at about 11 meters from the center of the 3.1 GWth reactor core. Scattering of the antineutrinos from the reactor is detected with low energy threshold high purity germanium detector. Passive and active shieldings are used to suppress all kinds of backgrounds coming from surrounding materials and cosmic radiation. The description of the experimental setup together with the first results is presented. The data taken in regimes with reactor ON (94.50 days) and reactor OFF (47.09 days) have been compared. No significant difference between spectra of two data sets is observed, i.e. no positive signals for coherent elastic neutrino-nucleus scattering are detected. Under Standard Model assumptions about coherent neutrino scattering an upper limit on a quenching parameter k < 0.26 (90 \% C.L.) in germanium has been set.
Neutron stars in general second order scalar-tensor theory: the case of non-minimal derivative coupling
Creators: name: Cisterna, Adolfo
name: Delsate, Térence
name: Rinaldi, Massimiliano
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the sector of Horndeski's gravity characterized by the coupling between the kinetic scalar field term and the Einstein tensor. We numerically construct neutron star configurations where the external geometry is identical to the Schwarzschild metric but the interior structure is considerably different from standard general relativity. We constrain the only parameter of this model from the requirement that compact configurations exist, and we argue that solutions less compact than neutron stars, such as white dwarfs, are also supported. Therefore, our model provides an explicit modification of general relativity that is astrophysically viable and does not conflict with Solar System tests.
description: References added, typos fixed. Title changed upon editor request. To appear in Physical Review D
Point-splitting regularization of the stress tensor of a coupling scalar field in de Sitter space
Creators: name: Ye, Xuan
name: Zhang, Yang
name: Wang, Bo
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences
subject: J.2

description: We perform the point-splitting regularization on the vacuum stress tensor of a coupling scalar field in de Sitter space under the guidance from the adiabatically regularized Green's function. For the massive scalar field with the minimal coupling $ξ=0$, the 2nd order point-splitting regularization yields a finite vacuum stress tensor with a positive, constant energy density, which can be identified as the cosmological constant that drives de Sitter inflation. For the coupling $ξ\ne 0$, we find that, even if the regularized Green's function is continuous, UV and IR convergent, the point-splitting regularization does not automatically lead to an appropriate stress tensor. The coupling $ξR$ causes log divergent terms, as well as higher-order finite terms which depend upon the path of the coincidence limit. After removing these unwanted terms by extra treatments, the 2nd-order regularization for small couplings $ξ\in(0,\frac{1}{7.04})$, and respectively the 0th-order regularization for the conformal coupling $ξ=\frac16$, yield a finite, constant vacuum stress tensor, in analogy to the case $ξ=0$. For the massless field with $ξ=0$ or $ξ=\frac16$, the point-splitting regularization yields a vanishing vacuum stress tensor, and there is no conformal trace anomaly for $ξ=\frac16$. If the 4th-order regularization were taken, the regularized energy density for general $ξ$ would be negative, which is inconsistent with the de Sitter inflation, and the regularized Green's function would be singular at the zero mass, which is unphysical. In all these cases, the stress tensor from the point-splitting regularization is equal to that from the adiabatic one.
description: 33 pages, 22 figures, published
The BL-Lac gamma-ray blazar PKS 0447-439 as a probable member of a group of galaxies at z=0.343
Creators: name: Muriel, H.
name: Donzelli, C.
name: Rovero, A. C.
name: Pichel, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The BL-Lac blazar PKS 0447-439 is one of the brightest HE gamma-ray sources that were first detected by Fermi-LAT. It was also detected by H.E.S.S. at VHE gamma-rays, which allowed constraining the redshift of PKS 0447-439 by considering the attenuation caused by gamma-ray interactions with ambient photons in the extragalactic background light (EBL). This constraint agreed with color-magnitude and spectroscopic redshift constraints (0.179 < z < 0.56), Recently, however, a much higher redshift was proposed for this blazar (z > 1.2). This value was debated because if true, it would imply either that the relevant absorption processes of gamma-rays are not well understood or that the EBL is dramatically different from what is believed today. This high redshift was not confirmed by three independent new spectroscopic observations at high signal-to-noise ratios. Given that BL-Lac are typically hosted by elliptical galaxies, which in turn are associated with groups, we aim to find the host group of galaxies of PKS 0447-439. The ultimate goal is to estimate a redshift for this blazar. Spectra of twenty-one objects in the field of view of PKS 0447-439 were obtained with the Gemini Multi-Object Spectrograph. Based on the redshifts and coordinates of these galaxies, we searched for groups of galaxies. Using a deep catalog of groups, we studied the probability of finding by chance a group of galaxies in the line of sight of PKS 0447-439. We identified a group of galaxies that was not previously cataloged at z = 0.343 with seven members, a virial radius of 0.42 Mpc, and a velocity dispersion of 622 km s^-1. We found that the probability of the host galaxy of PKS 0447-439 to be a member of the new group is >= 97%. Therefore, we propose to adopt z = 0.343 +- 0.002 as the most likely redshift for PKS 0447-439.
description: Accepted for publication in A&A
Measuring intermediate mass black hole binaries with advanced gravitational wave detectors
Creators: name: Veitch, John
name: Pürrer, Michael
name: Mandel, Ilya
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We perform a systematic study to explore the accuracy with which the parameters of intermediate-mass black-hole binary systems can be measured from their gravitational wave (GW) signatures using second-generation GW detectors. We make use of the most recent reduced-order models containing inspiral, merger and ringdown signals of aligned-spin effective-one-body waveforms (SEOBNR) to significantly speed up the calculations. We explore the phenomenology of the measurement accuracies for binaries with total masses between 50 and 500 $M_\odot$ and mass ratios between 0.1 and 1. We find that (i) at total masses below ~200 $M_\odot$, where the signal-to-noise-ratio is dominated by the inspiral portion of the signal, the chirp mass parameter can be accurately measured; (ii) at higher masses, the information content is dominated by the ringdown, and total mass is measured more accurately; (iii) the mass of the lower-mass companion is poorly estimated, especially at high total mass and more extreme mass ratios; (iv) spin cannot be accurately measured for our injection set with non-spinning components. Most importantly, we find that for binaries with non-spinning components at all values of the mass ratio in the considered range and at network signal-to-noise ratio of 15, analyzed with spin-aligned templates, the presence of an intermediate-mass black hole with mass >100 $M_\odot$ can be confirmed with 95% confidence in any binary that includes a component with a mass of 130 $M_\odot$ or greater.
description: 6 pages, 8 figures; published version
Geometric origin of negative Casimir entropies: A scattering-channel analysis
Creators: name: Ingold, Gert-Ludwig
name: Umrath, Stefan
name: Hartmann, Michael
name: Guérout, Romain
name: Lambrecht, Astrid
name: Reynaud, Serge
name: Milton, Kimball A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Negative values of the Casimir entropy occur quite frequently at low temperatures in arrangements of metallic objects. The physical reason lies either in the dissipative nature of the metals as is the case for the plane-plane geometry or in the geometric form of the objects involved. Examples for the latter are the sphere-plane and the sphere-sphere geometry, where negative Casimir entropies can occur already for perfect metal objects. After appropriately scaling out the size of the objects, negative Casimir entropies of geometric origin are particularly pronounced in the limit of large distances between the objects. We analyze this limit in terms of the different scattering channels and demonstrate how the negativity of the Casimir entropy is related to the polarization mixing arising in the scattering process. If all involved objects have a finite zero-frequency conductivity, the channels involving transverse electric modes are suppressed and the Casimir entropy within the large-distance limit is found to be positive.
description: 11 pages, 8 figures
The Roman Bridge at Chesters on Hadrian's Wall: excavations and research since 1989
Creators: name: Bidwell, Paul T
Publisher: name: Archaeology Data Service
Year: 2024

description: Archaeologia Aeliana, 01.6, 127-258
description: Surveys and excavations in 1990-1 completed almost the entire plan of the Roman road bridge over the North Tyne at Chesters on Hadrian's Wall, together with its two flanking towers and road ramps. A radiocarbon date and stratified pottery indicated a mid-Antonine date, probably in the later 150s, for the construction of the bridge. Immediately to its west, Hadrian's Wall built to Broad Gauge was standing to a height of 2.38 m, its upper courses rebuilt when the tower of the road bridge was added to its line. The area south of the Wall was soon brought up to the level of the road ramp, and the base of the tower was filled up to the level of its first floor. A building, surviving until the later third century, was then inserted west of the tower. One or more cist burials of early post-Roman date nearby may be outliers of a cemetery on the site of the fort baths. The bridge was still standing and in use until the end of the Roman period. In the later seventh century the bridge was dismantled to provide building materials for Wilfrid's churches at Hexham.
Anomalous volatility scaling in high frequency financial data
Creators: name: Nava, Noemi
name: Di Matteo, T.
name: Aste, Tomaso
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computational Finance (q-fin.CP)
subject: FOS: Economics and business

description: Volatility of intra-day stock market indices computed at various time horizons exhibits a scaling behaviour that differs from what would be expected from fractional Brownian motion (fBm). We investigate this anomalous scaling by using empirical mode decomposition (EMD), a method which separates time series into a set of cyclical components at different time-scales. By applying the EMD to fBm, we retrieve a scaling law that relates the variance of the components to a power law of the oscillating period. In contrast, when analysing 22 different stock market indices, we observe deviations from the fBm and Brownian motion scaling behaviour. We discuss and quantify these deviations, associating them to the characteristics of financial markets, with larger deviations corresponding to less developed markets.
description: 25 pages, 11 figure, 5 tables
title:  Letizia Tomassone e Adriana Valerio (a cura di) – Bibbia, donne, profezia. A partire dalla Riforma
Creators: name: Brezzi  ,  Francesca
Publisher: name: Roma TrE-Press
Year: 2019

description: B@belonline vol. 5 Ernst Bloch e il principio utopico ieri e oggi
The medieval Cheviot manor of Aldensheles
Creators: name: Jones, David M
Publisher: name: Archaeology Data Service
Year: 2024

description: Archaeologia Aeliana, 01.6, 259-290
description: On the south bank of the River Coquet, 3 km west of Alwinton, are the remains of a deserted settlement that is believed to be of medieval origin. Referred to as Linbrig, the settlement is divided into two parts separated by some 350 m; one is bisected by the road along the valley, while the other lies to the south-east on an area of rough grazing closer to the river; some structures in this latter part have been investigated by Coquetdale Community Archaeology (CCA).
These excavations located over fifty pieces of well-dressed masonry, some being re-used in the buildings while others were not part of the structures. Some have been identified as of medieval ecclesiastical origin and appear out of place in what was almost certainly an upland farming community. In light of these finds, the history of both the site and the surrounding area is examined by reference to previous investigations and documentary sources. It is shown that the settlement was situated on the medieval manor of Aldensheles; a fourteenth-century Patent roll entry refers to a now-lost chapel on this manor and this may be the source of some of the dressed masonry. The history of the manor, its likely medieval boundaries and subsequent changes to them and possible sites for the chapel are discussed.
Low-resolution Spectroscopy for the Globular Clusters with Signs of Supernova Enrichment: M22, NGC 1851 and NGC 288
Creators: name: Lim, Dongwook
name: Han, Sang-Il
name: Lee, Young-Wook
name: Roh, Dong-Goo
name: Sohn, Young-Jong
name: Chun, Sang-Hyun
name: Lee, Jae-Woo
name: Johnson, Christian I.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: There is increasing evidence for the presence of multiple red giant branches (RGBs) in the color-magnitude diagrams of massive globular clusters (GCs). In order to investigate the origin of this split on the RGB, we have performed new narrow-band Ca photometry and low-resolution spectroscopy for M22, NGC 1851, and NGC 288. We find significant differences (more than 4 sigma) in calcium abundance from the spectroscopic HK' index for M22 and NGC 1851. We also find more than 8 sigma differences in CN band strength between the Ca-strong and Ca-weak subpopulations for these GCs. For NGC 288, however, a large difference is detected only in the CN strength. The calcium abundances of RGB stars in this GC are identical to within the errors. This is consistent with the conclusion from our new Ca photometry, where the RGB splits are confirmed in M22 and NGC 1851, but not in NGC 288. We also find interesting differences in CN-CH correlations among these GCs. While CN and CH are anti-correlated in NGC 288, they show positive correlation in M22. NGC 1851, however, shows no difference in CH between the two groups of stars with different CN strengths. We suggest that all of these systematic differences would be best explained by how strongly type II supernovae enrichment has contributed to the chemical evolution of these GCs.
description: 11 pages, 14 figures. Accepted for publication in ApJS
A Mathematical Treatment of the Offset Microlensing Degeneracy
Creators: name: Zhang, Keming
name: Gaudi, B. Scott
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The offset microlensing degeneracy, recently proposed by Zhang et al. (2022), has been shown to generalize the close-wide and inner-outer caustic degeneracies into a unified regime of magnification degeneracy in the interpretation of 2-body planetary microlensing observations. While the inner-outer degeneracy expects the source trajectory to pass equidistant to the planetary caustics of the degenerate lens configurations, the offset degeneracy states that the same mathematical expression applies to any combination of the close, wide, and resonant caustic topologies, where the projected star-planet separations differ by an offset ($s_{\rm A}\neq s_{\rm B}$) that depends on where the source trajectory crosses the star-planet axis. An important implication is that the $s_{\rm A}=1/s_{\rm B}$ solution of the close-wide degeneracy never strictly manifests in observations except when the source crosses a singular point near the primary. Nevertheless, the offset degeneracy was proposed upon numerical calculations, and no theoretical justification was given. Here, we provide a theoretical treatment of the offset degeneracy, which demonstrates its nature as a mathematical degeneracy. From first principles, we show that the offset degeneracy formalism is exact to zeroth-order in the mass ratio ($q$) for two cases: when the source crosses the lens-axis inside of caustics, and for $(s_{\rm A}-s_{\rm B})^6\ll1$ when crossing outside of caustics. The extent to which the offset degeneracy persists in oblique source trajectories is explored numerically. Lastly, it is shown that the superposition principle allows for a straightforward generalization to $N$-body microlenses with $N-1$ planetary lens components ($q\ll1$), which results in a $2^{N-1}$-fold degeneracy.
description: Accepted for publication in ApJL. 10 pages, 6 figures
Composite multi-vortex diffraction-free beams and van Hove singularities in honeycomb lattices
Creators: name: Paltoglou, Vassilis
name: Chen, Zhigang
name: Efremidis, Nikolaos K.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We find diffraction-free beams for graphene and MoS$_2$-type honeycomb optical lattices. The resulting composite solutions have the form of multi-vortices, with spinor topological charges ($n$, $n\pm1$). Exact solutions for the spinor components are obtained in the Dirac limit. The effects of the valley degree of freedom and the mass are analyzed. Passing through the van-Hove singularity the topological structure of the solutions is modified. Exactly at the singularity the diffraction-free beams take the form of strongly localized one-dimensional stripes.
description: 4 pages, 6 figures, accepted for publication in Optics Letters