cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Non-linear diffusive shock acceleration: A recipe for injection of electrons
Creators: name: Arbutina, Bojan
name: Zeković, Vladimir
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Prescriptions for electron injection into the diffusive shock acceleration process are required in many practical considerations of cosmic-ray astrophysics, particularly in modeling of the synchrotron emission of astrophysical sources. In particle-in-cell simulations of quasi-parallel magnetized collisionless shocks, we analyse the evolution of particle spectra. We find that in the later stages of shock evolution, the initially strong suprathermal part in the ion spectra fades, thus leaving the spectra composed of a Maxwellian and a power law. Once the electron and ion spectra flatten and become parallel, we find that the amounts of cosmic ray ions and electrons become similar. We make the step towards relating the micro and macro-scale physics by applying this injection rule to Blasi's semi-analytical model of non-linear diffusive shock acceleration, in order to obtain the particle spectra and electron-to-proton ratio $K_{\mathrm{ep}}$ at high energies. By using shock jump conditions that include the electron heating, we find $K_{\mathrm{ep}}$ as a function of Mach number. For Mach number $\sim$ 100, our model finely reproduces the typically observed ratio for Galactic cosmic-rays $K_{\mathrm{ep}} \sim$ 1:100 in the test particle regime.
description: 17 pages, 12 figures
Selfish vs. Unselfish Optimization of Network Creation
Creators: name: Schneider, Johannes J.
name: Kirkpatrick, Scott
Publisher: name: arXiv
Year: 2005
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Hardware Architecture (cs.AR)
subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: We investigate several variants of a network creation model: a group of agents builds up a network between them while trying to keep the costs of this network small. The cost function consists of two addends, namely (i) a constant amount for each edge an agent buys and (ii) the minimum number of hops it takes sending messages to other agents. Despite the simplicity of this model, various complex network structures emerge depending on the weight between the two addends of the cost function and on the selfish or unselfish behaviour of the agents.
description: 16 pages, 6 figures
Scarring in classical chaotic dynamics with noise
Creators: name: Lippolis, Domenico
name: Shudo, Akira
name: Yoshida, Kensuke
name: Yoshino, Hajime
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report the numerical observation of scarring, that is enhancement of probability density around unstable periodic orbits of a chaotic system, in the eigenfunctions of the classical Perron-Frobenius operator of noisy Anosov ("cat") maps, as well as in the noisy Bunimovich stadium. A parallel is drawn between classical and quantum scars, based on the unitarity or non-unitarity of the respective propagators. For uniformly hyperbolic systems such as the cat map, we provide a mechanistic explanation for the classical phase-space localization detected, based on the distribution of finite-time Lyapunov exponents, and the interplay of noise with deterministic dynamics. Classical scarring can be measured by studying autocorrelation functions and their power spectra.
description: 6 pages, 6 figures
นกพิโทฮิวอิ ... นกมีพิษ
Creators: name: สุปาณี เลี้ยงพรพรรณ
Publisher: name: กองบริหารการวิจัย มหาวิทยาลัยธรรมศาสตร์
Year: 2558
Subjects: พิโทฮิวอิ, นกมีพิษ

description: 6, 23, วารสารวิทยาศาสตร์และเทคโนโลยี
Properties of the deconfining phase transition in SU(N) gauge theories
Creators: name: Lucini, B.
name: Teper, M.
name: Wenger, U.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We extend our earlier investigation of the finite temperature deconfinement transition in SU(N) gauge theories, with the emphasis on what happens as N->oo. We calculate the latent heat in the continuum limit, and find the expected quadratic in N behaviour at large N. We confirm that the phase transition, which is second order for SU(2) and weakly first order for SU(3), becomes robustly first order for N>3 and strengthens as N increases. As an aside, we explain why the SU(2) specific heat shows no sign of any peak as T is varied across what is supposedly a second order phase transition. We calculate the effective string tension and electric gluon masses at T=Tc confirming the discontinuous nature of the transition for N>2. We explicitly show that the large-N `spatial' string tension does not vary with T for TTc it increases as T-squared to a good approximation, and the k-string tension ratios closely satisfy Casimir Scaling. Within very small errors, we find a single Tc at which all the k-strings deconfine, i.e. a step-by-step breaking of the relevant centre symmetry does not occur. We calculate the interface tension but are unable to distinguish between linear or quadratic in N variations, each of which can lead to a striking but different N=oo deconfinement scenario. We remark on the location of the bulk phase transition, which bounds the range of our large-N calculations on the strong coupling side, and within whose hysteresis some of our larger-N calculations are performed.
description: 50 pages, 14 figures
ถ่านกัมมันต์จากไม้ไผ่ : ตลาดยังมีความต้องการสูง ?
Creators: name: ธัญพิสิษฐ์ พวงจิก
Publisher: name: กองบริหารการวิจัย มหาวิทยาลัยธรรมศาสตร์
Year: 2558
Subjects: ไผ่, ถ่านกัมมันต์

description: 6, 23, วารสารวิทยาศาสตร์และเทคโนโลยี
Exploring Scenes of "the English Urban Renaissance" in Tobias Smollett's The Expedition of Humphry Clinker
Creators: name: Choedphong Uttama
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2020
Subjects: Eighteenth-century novel
eighteenth-century city/town
The Expedition of Humphry Clinker
Tobias Smollett

description: วารสารศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์, 20, 2, 350-372
การผลิตผักอินทรีย์
Creators: name: คริษฐ์สพล หนูพรหม
Publisher: name: กองบริหารการวิจัย มหาวิทยาลัยธรรมศาสตร์
Year: 2558
Subjects: ผักอินทรีย์, อาหารปลอดภัย, พืชผัก

description: 6, 23, วารสารวิทยาศาสตร์และเทคโนโลยี
Multi-Resolution Subspace-Based Optimization Method for the Retrieval of 2D Perfect Electric Conductors
Creators: name: Ye, Xiuzhu
name: Zardi, Francesco
name: Salucci, Marco
name: Massa, Andrea
Publisher: name: arXiv
Year: 2022
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Perfect Electric Conductors (PECs) are imaged integrating the subspace-based optimizationmethod (SOM) within the iterative multi-scaling scheme (IMSA). Without a-priori information on the number or/and the locations of the scatterers and modelling their EM scattering interactions with a (known) probing source in terms of surface electric field integral equations, a segment-based representation of PECs is retrieved from the scattered field samples. The proposed IMSA-SOM inversion method is validated against both synthetic and experimental data by assessing the reconstruction accuracy, the robustness to the noise, and the computational efficiency with some comparisons, as well.
title: Dissecting out the mechanisms to longevity through eating less
Creators: name: Mulvey, Lorna
Publisher: name: University of Glasgow
Year: 2017

description: We are currently in the midst of a revolution in ageing research, with several dietary, genetic and pharmacological interventions now known to modulate ageing in model organisms. Whilst it has been known for almost 100 years that dietary restriction (DR) extends lifespan across wide evolutionary distances, the mechanisms through which it acts are still unknown. Using three different recombinant inbred ILSXISS mouse strains, which vary in response to DR; from lifespan extension to lifespan shortening, my PhD has sought to identify the mechanisms involved in DR-induced lifespan extension. Ultimately by exploiting the genetic heterogeneity of these mouse strains may help identify the mechanisms through which DR acts to slow ageing. During my PhD I (1) examined how these animals respond metabolically to DR, (2) determined the impact of DR on mitochondrial function, as mitochondrial dysfunction is a well characterised hallmark of ageing, and DR is known to attenuate age-related mitochondrial dysfunction, and (3) investigated proteostasis in these mice using isotopic labelling. A number of metabolic changes were found to be important to lifespan extension with DR, namely maintenance of gonadal white adipose tissue (WAT) stores and increases in brown adipose tissue (BAT). Conversely, large losses of WAT was associated with lifespan truncation following 40% long-term DR. Surprisingly, enhanced glucose homeostasis was not found to be a prerequisite to lifespan extension with DR. Hepatic mitochondrial dysfunction associated with reduced lifespan of TejJ114 mice under 40% DR, but similar dysfunction was not apparent in skeletal muscle mitochondria, highlighting tissue-specific differences in the mitochondrial response in ILSXISS mice to DR. Increased proteostasis as measured by the newprotein/newDNA ratio, was increased following short-term DR, highlighting increased synthesis of cytoplasmic proteins in the skeletal muscle as important to DR-induced lifespan extension, however results were both tissue and protein specific. The evidence produced in this thesis strongly suggests that numerous aspects of metabolism and mitochondrial function are associated with lifespan shortening, and that the inability for metabolic adaptability may be detrimental to lifespan. This thesis helps to elucidate the impact of genotype on key hallmarks of DR and highlights the importance of utilising both genders and genetically heterogeneous murine strains in order to understand the shared features of slowed ageing.
สุนทรียภาพของชีวิตผ่านภาษาและการสืบสรรค์วรรณศิลป์ท่ามกลางวิกฤติโควิด-19
Creators: name: นิตยา แก้วคัลณา
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2020
Subjects: สุนทรียภาพของชีวิต
การสืบสรรค์
วรรณศิลป์

description: วารสารศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์, 20, 2, 373-401
INSPIRE: INvestigating Stellar Population In RElics -- I. Survey presentation and pilot program
Creators: name: Spiniello, C.
name: Tortora, C.
name: D'Ago, G.
name: Coccato, L.
name: La Barbera, F.
name: Ferré-Mateu, A.
name: Napolitano, N. R.
name: Spavone, M.
name: Scognamiglio, D.
name: Arnaboldi, M.
name: Gallazzi, A.
name: Hunt, L.
name: Moehler, S.
name: Radovich, M.
name: Zibetti, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Massive ETGs are thought to form through a two-phase process. At early times, an intense and fast starburst forms blue and disk-dominated galaxies. After quenching, the remaining structures become red, compact and massive, i.e., 'red nuggets'. Then, a time-extended second phase which is dominated by mergers, causes structural evolution and size growth. Given the stochastic nature of mergers, a small fraction of red nuggets survives, without any interaction, massive and compact until today: relic galaxies. Since this fraction depends on the processes dominating the size growth, counting relics at low-z is a valuable way to disentangle between different galaxy evolution models. In this paper, we introduce the INvestigating Stellar Population In RElics (INSPIRE) Project, that aims at spectroscopically confirming and fully characterizing a large number of relics at 0.180 % of their stellar mass within a short (0.5 - 1.0 Gyrs) initial star formation episode occurred only ~1 Gyr after the Big Bang. The third galaxy has a more extended star formation history and a lower velocity dispersion. Thus we confirm two out of three candidates as relics.
description: 19 pages, 14 figures, accepted for publication in A&A
การประยุกต์ใช้ปรัชญาเศรษฐกิจพอเพียงและจิตวิทยาการท่องเที่ยว: แนวทางขับเคลื่อนและฟื้นฟูการท่องเที่ยวโดยชุมชน หลังวิกฤตกาล โรคติดเชื้อไวรัสโคโรนาสายพันธุ์ใหม่ 2019 (โควิด-19)
Creators: name: ธิปฏพณร์ ยิ้มประเสริฐ
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2020
Subjects: ปรัชญาเศรษฐกิจพอเพียง
จิตวิทยาการท่องเที่ยว
การท่องเที่ยวโดยชุมชน
โรคติดเชื้อไวรัสโคโรนา สายพันธุ์ใหม่ 2019 (โควิด-19)

description: วารสารศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์, 20, 2, 402-420
Caveat emptor NICE: biased use of cost-effectiveness is inefficient and inequitable
Creators: name: Dowie, Jack
name: Kaltoft, Mette Kjer
name: Nielsen, Jesper Bo
name: Salkeld, Glenn
Publisher: name: F1000Research
Year: 2015

description: Concern with the threshold applied in cost-effectiveness analyses by bodies such as NICE distracts attention from their biased use of the principle.  The bias results from the prior requirement that an intervention be effective (usually 'clinically effective') before its cost-effectiveness is considered. The underlying justification for the use of cost-effectiveness as a criterion, whatever the threshold adopted, is that decisions in a resource-constrained system have opportunity costs. Their existence rules out any restriction to those interventions that are 'incrementally cost-effective' at a chosen threshold and requires acceptance of those that are 'decrementally cost-effective' at the same threshold. Interventions that fall under the linear ICER line in the South-West quadrant of the cost-effectiveness plane are cost-effective because they create net health benefits, as do those in the North-East quadrant. If there is objection to the fact that they are cost-effective by reducing effectiveness as well as costs, it is possible to reject them, but only on policy grounds other than their failure to be cost-effective. Having established this, the presentation considers and seeks to counter the arguments based on these other grounds. Most notably these include those proposing a different threshold in the South-West quadrant from the North-East one, i.e. propose a 'kinked ICER'. Another undesirable consequence of the biased use of cost-effectiveness is the failure to stimulate innovations that would increase overall health gain by being less effective in the condition concerned, but generate more benefits elsewhere. NICE can only reward innovations that cost more.
Whole genome taxonomic classication for prokaryotic plant pathogens
Creators: name: Pritchard, Leighton
Publisher: name: F1000Research
Year: 2015

description: Effective pathogen detection and diagnosis in support of food security legislation and epidemiology depends on the ability to classify pathogenic isolates precisely. Diagnostics and classification for bacteria are made more difficult by the influence of horizontal gene transfer on phenotype, and historically complex and sometimes inaccurate nomenclatural and taxonomic assignments that persist in strain collections and online sequence databases. This presentation briefly discusses the relationship between taxonomy, genotype and phenotype in plant pathogenic bacteria, and their implications for diagnostic testing and legislation in general. Novel whole-genome classifications of the SRE are presented, illustrating inconsistencies between established taxonomies and evidence from completely sequenced isolates. It concludes with a perspective on the future impact of widespread whole-genome sequencing and classification methods.
N=1 domain wall solutions of massive type II supergravity as generalized geometries
Creators: name: Louis, Jan
name: Vaula, Silvia
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study N=1 domain wall solutions of type IIB supergravity compactified on a Calabi-Yau manifold in the presence of RR and NS electric and magnetic fluxes. We show that the dynamics of the scalar fields along the direction transverse to the domain wall is described by gradient flow equations controlled by a superpotential W. We then provide a geometrical interpretation of the gradient flow equations in terms of the mirror symmetric compactification of type IIA. They correspond to a set of generalized Hitchin flow equations of a manifold with SU(3)xSU(3)structure which is fibered over the direction transverse to the domain wall.
description: 28 pages, LaTeX
ดอรา บรูแดร์: วรรณกรรมแนวผสมของปาทริก โมดิอาโน
Creators: name: อนุสรณ์ ชมภูพล
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2020
Subjects: ดอรา บรูแดร์
ปาทริก โมดิอาโน
ประเภทวรรณกรรม
แนวผสม

description: วารสารศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์, 20, 2, 421-455
The Library of Babel: On the origin of gravitational thermodynamics
Creators: name: Balasubramanian, Vijay
name: de Boer, Jan
name: Jejjala, Vishnu
name: Simon, Joan
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that heavy pure states of gravity can appear to be mixed states to almost all probes. For AdS_5 Schwarzschild black holes, our arguments are made using the field theory dual to string theory in such spacetimes. Our results follow from applying information theoretic notions to field theory operators capable of describing very heavy states in gravity. For half-BPS states of the theory which are incipient black holes, our account is exact: typical microstates are described in gravity by a spacetime ``foam'', the precise details of which are almost invisible to almost all probes. We show that universal low-energy effective description of a foam of given global charges is via certain singular spacetime geometries. When one of the specified charges is the number of D-branes, the effective singular geometry is the half-BPS ``superstar''. We propose this as the general mechanism by which the effective thermodynamic character of gravity emerges.
description: LaTeX, 6 eps figures, uses young.sty and wick.sty; Version 2: typos corrected, minor rewordings and clarifications, references added
Assessing telluric correction methods for Na detections with high-resolution exoplanet transmission spectroscopy
Creators: name: Langeveld, Adam B.
name: Madhusudhan, Nikku
name: Cabot, Samuel H. C.
name: Hodgkin, Simon T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Using high-resolution ground-based transmission spectroscopy to probe exoplanetary atmospheres is difficult due to the inherent telluric contamination from absorption in Earth's atmosphere. A variety of methods have previously been used to remove telluric features in the optical regime and calculate the planetary transmission spectrum. In this paper we present and compare two such methods, specifically focusing on Na detections using high-resolution optical transmission spectra: (1) calculating the telluric absorption empirically based on the airmass, and (2) using a model of the Earth's transmission spectrum. We test these methods on the transmission spectrum of the hot Jupiter HD 189733 b using archival data obtained with the HARPS spectrograph during three transits. Using models for Centre-to-Limb Variation and the Rossiter-McLaughlin effect, spurious signals which are imprinted within the transmission spectrum are reduced. We find that correcting tellurics with an atmospheric model of the Earth is more robust and produces consistent results when applied to data from different nights with changing atmospheric conditions. We confirm the detection of sodium in the atmosphere of HD 189733 b, with doublet line contrasts of -0.64 $\pm$ 0.07 % (D2) and -0.53 $\pm$ 0.07 % (D1). The average line contrast corresponds to an effective photosphere in the Na line located around 1.13 R$_p$. We also confirm an overall blueshift of the line centroids corresponding to net atmospheric eastward winds with a speed of 1.8 $\pm$ 1.2 km/s. Our study highlights the importance of accurate telluric removal for consistent and reliable characterisation of exoplanetary atmospheres using high-resolution transmission spectroscopy.
description: Published in MNRAS, 13 pages, 9 figures. Updated with proof corrections
Magnetoelectricity induced by rippling of magnetic nanomembranes and wires
Creators: name: Ortix, Carmine
name: Brink, Jeroen van den
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Magnetoelectric crystals have the interesting property that they allow electric fields to induce magnetic polarizations, and vice versa, magnetic fields to generate ferroelectric polarizations. Having such a magnetoelectric coupling usually requires complex types of magnetic textures, e.g., of spiralling type. Here we establish a novel approach to generate a linear magnetoelectric coupling in insulators with a conventional, ferromagnetic ground state. We show that nanoscale curved geometries lead to a reorganization of the magnetic texture that spontaneously breaks inversion symmetry and thereby induces macroscopic magnetoelectric multipoles. Specifically, we prove that structural deformation in the form of controlled ripples activate a magnetoelectric monopole in the recently synthesised two-dimensional magnets. We also demonstrate that in zig-zag shaped ferromagnetic wires in planar architectures, a magnetic toroidal moment triggers a direct linear magnetoelectric coupling.
description: 5 pages, 4 figures
การรับรู้เสียงพูดอันนำไปสู่การแรกรับภาษา: ผลการศึกษาจากเบบี้แล็บ
Creators: name: จุฑามณี อ่อนสุวรรณ
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2020
Subjects: การรับรู้เสียงพูด
การแรกรับภาษา
ภาษาศาสตร์จิตวิทยา
ระบบเสียงภาษาไทย
เบบี้แล็บ

description: วารสารศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์, 20, 2, 456-488
Axion-like particles as mediators for dark matter: beyond freeze-out
Creators: name: Bharucha, A.
name: Brümmer, F.
name: Desai, N.
name: Mutzel, S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider an axion-like particle (ALP) coupled to Standard Model (SM) fermions as a mediator between the SM and a fermionic dark matter (DM) particle. We explore the case where the ALP-SM and/or the ALP-DM couplings are too small to allow for DM generation via standard freeze-out. DM is therefore thermally decoupled from the visible sector and must be generated through either freeze-in or decoupled freeze-out (DFO). In the DFO regime, we present an improved approach to obtain the relic density by solving a set of three stiff coupled Boltzmann equations, one of which describes the energy transfer from the SM to the dark sector. Having determined the region of parameter space where the correct relic density is obtained, we revisit experimental constraints from electron beam dump experiments, rare $B$ and $K$ decays, exotic Higgs decays at the LHC, astrophysics, dark matter searches and cosmology. In particular, for our specific ALP scenario we (re)calculate and improve beam dump, flavour and supernova constraints. Throughout our calculation we implement state-of-the-art chiral perturbation theory results for the ALP partial decay width to hadrons. We find that while the DFO region, which predicts extremely small ALP-fermion couplings, can probably only be constrained by cosmological observables, the freeze-in region covers a wide area of parameter space that may be accessible to other more direct probes. Some of this parameter space is already excluded, but a significant part should be accessible to future collider experiments.
description: 59 pages, 12 figures, 2 tables
Step-like magnetization in a spin-chain system: Ca3Co2O6
Creators: name: Kudasov, Yuri B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Due to a ferromagnetic in-chain coupling between Co$^{3+}$ ions at trigonal sites, chains Co$_2$O$_6$ are considered as large rigid spin moments. The antiferromagnetic Ising model on the triangular lattice is applied to describe an interchain ordering. An evolution of metastable states in a sweeping magnetic field is investigated by the single-flip technique. At the first approximation two steps in the magnetization curve and a plateau at 1/3 of the saturation magnetization are found. Four steps in magnetization are determined in high-order approximations in agreement with experimental results.
description: 4 pages, 4 figures, submitted to Phys. Rev. Lett
Controlling frustrated magnetism on the kagome lattice by uniaxial-strain tuning
Creators: name: Wang, Jierong
name: Su, Y. -S.
name: Spitaler, M.
name: Puphal, P.
name: Krellner, C.
name: Brown, S. E.
name: Pustogow, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: It is predicted that strongly interacting spins on a frustrated lattice may lead to a quantum disordered ground state or even form a quantum spin liquid with exotic low-energy excitations. However, a thorough tuning of the frustration strength, separating its effects from those of disorder and other factors, is pending. Here we break the symmetry of a kagome-lattice compound in a controlled manner by applying $in$ $situ$ uniaxial stress. The transition temperature of $\rm Y_3Cu_9(OH)_{18}OCl_8$ is linearly enhanced with strain, $ΔT_{\rm N}/T_{\rm N} \approx 10\%$ upon in-plane compression of order $1\%$, providing clear evidence for a release of frustration and its pivotal role for magnetic order. Our comprehensive $^1$H NMR results suggest a $\overrightarrow{Q}=(1/3\times 1/3)$ state under unstrained conditions and further reveal an incomplete antiferromagnetic transition with fluctuating moments in this strongly frustrated system.
description: 7 pages total, 4 pages main text, 5 figures
Sixfolds of generalized Kummer type and K3 surfaces
Creators: name: Floccari, Salvatore
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We prove that any hyper-Kähler sixfold $K$ of generalized Kummer type has a naturally associated manifold $Y_K$ of $\mathrm{K}3^{[3]}$-type. It is obtained as crepant resolution of the quotient of $K$ by a group of symplectic involutions acting trivially on its second cohomology. When $K$ is projective, the variety $Y_K$ is birational to a moduli space of stable sheaves on a uniquely determined projective~$\mathrm{K}3$ surface~$S_K$. As application of this construction we show that the Kuga-Satake correspondence is algebraic for the K3 surfaces $S_K$, producing infinitely many new families of $\mathrm{K}3$ surfaces of general Picard rank $16$ satisfying the Kuga-Satake Hodge conjecture.
description: v3: final version, to appear in Compositio Mathematica
Fractional and scaled Brownian motion on the sphere: The effects of long-time correlations on navigation strategies
Creators: name: Gómez, Adriano Valdés
name: Sevilla, Francisco J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We analyze \emph{fractional Brownian motion} and \emph{scaled Brownian motion} on the two-dimensional sphere $\mathbb{S}^{2}$. We find that the intrinsic long time correlations that characterize fractional Brownian motion collude with the specific dynamics (\emph{navigation strategies}) carried out on the surface giving rise to rich transport properties. We focus our study on two classes of navigation strategies: one induced by a specific set of coordinates chosen for $\mathbb{S}^2$ (we have chosen the spherical ones in the present analysis), for which we find that contrary to what occurs in the absence of such long-time correlations, \emph{non-equilibrium stationary distributions} are attained. These results resemble those reported in confined flat spaces in one and two dimensions [Guggenberger {\it et al.} New J. Phys. 21 022002 (2019), Vojta {\it et al.} Phys. Rev. E 102, 032108 (2020)], however in the case analyzed here, there are no boundaries that affects the motion on the sphere. In contrast, when the navigation strategy chosen corresponds to a frame of reference moving with the particle (a Frenet-Serret reference system), then the \emph{equilibrium} \emph{distribution} on the sphere is recovered in the long-time limit. For both navigation strategies, the relaxation times towards the stationary distribution depend on the particular value of the Hurst parameter. We also show that on $\mathbb{S}^{2}$, scaled Brownian motion, distinguished by a time-dependent diffusion coefficient with a power-scaling, is independent of the navigation strategy finding a good agreement between the analytical calculations obtained from the solution of a time-dependent diffusion equation on $\mathbb{S}^{2}$, and the numerical results obtained from our numerical method to generate ensemble of trajectories.
description: 11 pages, 4 figures. Figures were rearranged and the introduction was extended
Suppression of magnetic relaxation processes in melt-textured YBa$_2$Cu$_3$O$_x$ superconductors by a transverse ac magnetic field
Creators: name: Fisher, L. M.
name: Kalinov, A. V.
name: Voloshin, I. F.
name: Yampol'skii, V. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The effect of the transverse AC magnetic field on relaxation process in YBa$_2$Cu$_3$O$_x$ melt-textured superconductor was studied. A factor of 50 suppression of the relaxation rate could be achieved at the expense of some reduction in the maximum trapped field, with the magnetic-induction gradient being unchanged. This phenomenon is interpreted as a result of an increase of the pinning force after the action of the transverse AC magnetic field that is confirmed by the measurement of the trapped-induction distribution.
description: 4 pages, submitted to Phys. Rev. B
การอธิบายปรากฏการณ์ทางสังคมด้วยกระบวนทัศน์ทางเลือกเชิงเหตุผล: การทำแท้งในสังคมไทย
Creators: name: กฤษณะโชติ บัวหล้า
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2020
Subjects: ปรัชญาสังคมศาสตร์
กระบวนทัศน์ทางเลือกเชิงเหตุผล
ปรากฏการณ์ทางสังคม
การทำแท้ง

description: วารสารศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์, 20, 2, 489-512
Electrical Seebeck-Contrast Observation of Magnon Hall Effect in Topological Ferromagnet Lu$_2$V$_2$O$_7$/Heavy Metal Heterostructures
Creators: name: Xu, Jinsong
name: He, Jiaming
name: Zhou, J. -S.
name: Qu, Danru
name: Huang, Ssu-Yen
name: Chien, C. L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The observation of the magnon Hall effect (MHE) has relied solely on the challenging measurement of the thermal Hall conductivity. Here, we report a highly sensitive electrical Seebeck-contrast method for the observation of MHE in Lu$_2$V$_2$O$_7$/heavy metal heterostructures, that is highly desirable for the exploration of new MHE materials and their applications. Using measuring wires with very different Seebeck coefficients, we established a general method that can separate contributions (e.g., MHE) that generates a lateral temperature drop, from those [e.g., anomalous Nernst effect (ANE) and spin Seebeck effect (SSE)] that generate a lateral electric field. We show that a suitable heavy metal overlayer can eliminate the inherent ANE and SSE signals from the semiconducting Lu$_2$V$_2$O$_7$. The MHE in Lu$_2$V$_2$O$_7$ is quasi-isotropic among crystals with different orientations. In addition to the previously reported transverse MHE under an in-plane temperature gradient, we have uncovered longitudinal MHE under an out-of-plane temperature gradient.
description: 4 figures
Dynamics of deformable multibody systems
Creators: name: Huang, Xiaodan
Publisher: name: University of British Columbia
Year: 2009

description: This thesis presents an investigation of the nonlinear dynamics of arbitrary deformable multibody systems that undergo large translation and rotation movements and small elastic deformations. The objective of this study is to develop an accurate and efficient modeling method to meet the requirements in system design and control. A general implicit formulation based on the joint coordinate method for arbitrary tree or closed-loop deformable multibody systems (MBS) is developed by defining a new topological matrix. The newly-developed formulation and code have been verified numerically by investigating the total energies and strain energies of two different conservative rigid-flexible systems. The absolute error of the total energy should be several orders smaller than the strain energy to ensure the validity of the small elastic deformations. An experiment study on the dynamic responses of a 3-D test rig with both joint and link flexibility was conducted to verify the simulations. The results of the simulation and experiment show good agreement in both the time and frequency domains. A simulation comparison amongst the joint coordinate method, Order N method and absolute coordinate method was performed. It was shown that the Order N formulation method may induce chaotic behavior in nonchaotic systems due to the propagation and enlargement of numerical errors. The commercial software ADAMS was used as a representative of the absolute coordinate method. The results demonstrate that the newly-developed implicit formulation has some advantages compared with other methods. Two geometrical nonlinear effects are discussed in this thesis. The simulation and experimental results of the test rig show that the formulation including the foreshortening effect overestimates the nonlinearity. The thesis also presents simulations of modal expression, nonlinear coupling effects and chaos.
Categorical properties of reduction functors over non-positive DG-rings
Creators: name: Shaul, Liran
Publisher: name: arXiv
Year: 2022
Subjects: subject: Rings and Algebras (math.RA)
subject: Commutative Algebra (math.AC)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: Primary: 16E45, Secondary: 18A22, 13D07, 13D09

description: Given a non-positive DG-ring $A$, associated to it are the reduction and coreduction functors $F(-) = \mathrm{H}^0(A)\otimes^{\mathrm{L}}_A -$ and $G(-) = \mathrm{R}\operatorname{Hom}_A(\mathrm{H}^0(A),-)$, considered as functors $\operatorname{\mathsf{D}}(A) \to \operatorname{\mathsf{D}}(\mathrm{H}^0(A))$, as well as the forgetful functor $S:\operatorname{\mathsf{D}}(\mathrm{H}^0(A)) \to \operatorname{\mathsf{D}}(A)$. In this paper we carry a systematic study of the categorical properties of these functors. As an application, a new descent result for vanishing of $\operatorname{Ext}$ and $\operatorname{Tor}$ over ordinary commutative noetherian rings is deduced.
description: 13 pages, final version, to appear in Proceedings of the AMS
ความหลากหลายของระบบวรรณยุกต์และ วรรณยุกต์สนธิในภาษาลื้อ
Creators: name: พิณรัตน์ อัครวัฒนากุล
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2020
Subjects: ภาษาลื้อ
ระบบวรรณยุกต์
วรรณยุกต์สนธิ

description: วารสารศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์, 20, 2, 513-548
A search for thermal gyro-synchrotron emission from hot stellar coronae
Creators: name: Golay, Walter W.
name: Mutel, Robert L.
name: Lipman, Dani
name: Güdel, Manuel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We searched for thermal gyro-synchrotron radio emission from a sample of five radio-loud stars whose X-ray coronae contain a hot ($T_e>10^7$ K) thermal component. We used the JVLA to measure Stokes I and V/I spectral energy distributions (SEDs) over the frequency range 15--45 GHz, determining the best-fitting model parameters using power-law and thermal gyro-synchrotron emission models. The SEDs of the three chromospherically active binaries (Algol, UX Arietis, HR 1099) were well-fit by a power-law gyro-synchrotron model, with no evidence for a thermal component. However, the SEDs of the two weak-lined T Tauri stars (V410 Tau, HD 283572) had a circularly polarized enhancement above 30 GHz that was inconsistent with a pure power-law distribution. These spectra were well-fit by summing the emission from an extended coronal volume of power-law gyro-synchrotron emission and a smaller region with thermal plasma and a much stronger magnetic field emitting thermal gyro-synchrotron radiation. We used Bayesian inference to estimate the physical plasma parameters of the emission regions (characteristic size, electron density, temperature, power-law index, and magnetic field strength and direction) using independently measured radio sizes, X-ray luminosities, and magnetic field strengths as priors, where available. The derived parameters were well-constrained but somewhat degenerate. The power-law and thermal volumes in the pre-main-sequence stars are probably not co-spatial, and we speculate they may arise from two distinct regions: a tangled-field magnetosphere where reconnection occurs and a recently discovered axisymmetric toroidal magnetic field, respectively.
description: Updated to final published version in MNRAS
Tidal Interactions of Red Giants with Environment Stars in Globular Clusters
Creators: name: Yamada, Shimako
name: Okazaki, Atsuo T.
name: Fujimoto, Masayuki Y.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the tidal interactions of a red giant with a main sequence in the dense stellar core of globular clusters by Smoothed Particle Hydrodynamics method. Two models of $0.8 \msun$ red giant with the surface radii 20 and $85 R_\sun$ are used with 0.6 or $0.8M_\sun$ main sequence star treated as a point mass. We demonstrate that even for the wide encounters that two stars fly apart, the angular momentum of orbital motion can be deposited into the red giant envelope to such an extent as to trigger rotational mixing and to explain the fast rotation observed for the horizontal branch stars, and also that sufficient mass can be accreted on the main sequence stars to disguise their surface convective zone with the matter from the red giant envelope. On the basis of the present results, we discuss the parameter dependence of these transfer characteristics with non-linear effects taken into account, and derive fitting formulae to give the amounts of energy and angular momentum deposited into the red giant and of mass accreted onto the perturber as functions of stellar parameters and the impact parameter of encounter. These formulae are applicable to the encounters not only of the red giants but also of the main sequence stars, and useful in the study of the evolution of stellar systems with the star-star interactions taken into account.
description: 36 pages, 11 figures, accepted
An Analysis of Scatter Characteristics in X-ray CT Spectral Correction
Creators: name: Zhang, Tao
name: Chen, Zhiqiang
name: Zhou, Hao
name: Bennett, N. Robert
name: Wang, Adam S.
name: Gao, Hewei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Medical Physics (physics.med-ph)
subject: Image and Video Processing (eess.IV)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: X-ray scatter remains a major physics challenge in volumetric computed tomography (CT), whose physical and statistical behaviors have been commonly leveraged in order to eliminate its impact on CT image quality. In this work, we conduct an in-depth derivation of how the scatter distribution and scatter to primary ratio (SPR) will change during the spectral correction, leading to an interesting finding on the property of scatter: when applying the spectral correction before scatter is removed, the impact of SPR on a CT projection will be scaled by the first derivative of the mapping function; while the scatter distribution in the transmission domain will be scaled by the product of the first derivative of the mapping function and a natural exponential of the projection difference before and after the mapping. Such a characterization of scatter's behavior provides an analytic approach of compensating for the SPR as well as approximating the change of scatter distribution after spectral correction, even though both of them might be significantly distorted as the linearization mapping function in spectral correction could vary a lot from one detector pixel to another. We conduct an evaluation of SPR compensations on a Catphan phantom and an anthropomorphic chest phantom to validate the characteristics of scatter. In addition, this scatter property is also directly adopted into CT imaging using a spectral modulator with flying focal spot technology (SMFFS) as an example to demonstrate its potential in practical applications.
Fracton Matter
Creators: name: Gromov, Andrey
name: Radzihovsky, Leo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review a burgeoning field of "fractons" -- a class of models where quasi-particles are strictly immobile or display restricted mobility that can be understood through generalized multipolar symmetries and associated conservation laws. Focusing on just a corner of this fast-growing subject, we will demonstrate how one class of such theories -- symmetric tensor and coupled-vector gauge theories surprisingly emerge from familiar elasticity of a two-dimensional quantum crystal. The disclination and dislocation crystal defects respectively map onto charges and dipoles of the fracton gauge theory. This fracton-elasticity duality leads to predictions of fractonic phases and quantum phase transitions to their descendants, that are duals of the commensurate crystal, supersolid, smectic, hexatic liquid crystals, as well as amorphous solids, quasi-crystals and elastic membranes. We show how these dual gauge theories provide a field theoretic description of quantum melting transitions through a generalized Higgs mechanism. We demonstrate how they can be equivalently constructed as gauged models with global multipole symmetries. We expect extensions of such gauge-elasticity dualities to generalized elasticity theories provide a route to discovery of new fractonic models and their potential experimental realizations.
description: 26 pages, 14 figures
Global existence of dissipative solutions to the Camassa--Holm equation with transport noise
Creators: name: Galimberti, Luca
name: Holden, Helge
name: Karlsen, Kenneth H.
name: Pang, Peter H. C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: Primary: 35R60, 35G25, Secondary: 35A01, 35D30

description: We consider a nonlinear stochastic partial differential equation (SPDE) that takes the form of the Camassa--Holm equation perturbed by a convective, position-dependent, noise term. We establish the first global-in-time existence result for dissipative weak martingale solutions to this SPDE, with general finite-energy initial data. The solution is obtained as the limit of classical solutions to parabolic SPDEs. The proof combines model-specific statistical estimates with stochastic propagation of compactness techniques, along with the systematic use of tightness and a.s. representations of random variables on specific quasi-Polish spaces. The spatial dependence of the noise function makes more difficult the analysis of a priori estimates and various renormalisations, giving rise to nonlinear terms induced by the martingale part of the equation and the second-order Stratonovich--Itô correction term.
description: 86 pages
Isocyanide reactions toward the synthesis of 3-(oxazol-5-yl)quinoline-2-carboxamides and 5-(2-tosylquinolin-3-yl)oxazole
Creators: name: Shiri, Morteza
name: Yasaei, Zahra
name: Mohammadpour, Zeinab
name: Tanbakouchian, Zahra
name: Fazelzadeh, Shima
Publisher: name: figshare
Year: 2021
Subjects: subject: 30205 Non-metal Chemistry
subject: FOS: Chemical sciences
subject: 30503 Organic Chemical Synthesis
subject: Organic Chemistry
subject: 30504 Organic Green Chemistry
subject: 39904 Organometallic Chemistry
subject: 30207 Transition Metal Chemistry
subject: 30306 Synthesis of Materials

description: A palladium-catalyzed three-component reaction between 5-(2-chloroquinolin-3-yl) oxazoles, isocyanides, and water to yield 3-(oxazol-5-yl)quinoline-2-carboxamides is described. Interestingly, sulfonylation occurred when the same reaction was performed with toluenesulfonylmethyl isocyanide (TosMIC) as an isocyanide source. The reaction with 5-(2-chloroquinolin-3-yl)oxazoles and TosMIC in the presence of Cs2CO3 in DMSO afforded 5-(2-Tosylquinolin-3-yl)oxazoles. In basic media, TosMIC probably decomposed to generate Ts− species, which were replaced with Cl−. Tandem oxazole formation with subsequent sulfonylation of 2-chloroquinoline-3-carbaldehydes to form directly 5-(2-tosylquinolin-3-yl)oxazoles was also investigated.
Der Geist der Wahrheit und die Erneuerung der Weltordnung
Creators: name: Raiser, Konrad
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 40 Nr. 3 (1991): Ökumenische Rundschau, Band 40, Heft 3
ผลของการใช้ปุ๋ยอินทรีย์คุณภาพสูง ปุ๋ยเคมี และการใช้ร่วมกันที่มีผลต่อการเจริญเติบโตและการให้ผลผลิตของผักบุ้งจีน (Ipomoea aquatica Forsk.)
Creators: name: อรประภา อนุกูลประเสริฐ
name: พิสินี บุญวัฒนากุล
name: สมชาย ชคตระการ
Publisher: name: กองบริหารการวิจัย มหาวิทยาลัยธรรมศาสตร์
Year: 2558
Subjects: ไนโตรเจน, ปุ๋ยเคมี, ปุ๋ยอินทรีย์คุณภาพสูง, ผักบุ้งจีน, ผลผลิต

description: 6, 23, วารสารวิทยาศาสตร์และเทคโนโลยี
Impact of Boron doping to the tunneling magnetoresistance of Heusler alloy Co2FeAl
Creators: name: Habiboglu, Ali
name: Chandak, Yash
name: Khanal, Pravin
name: Zhou, Bowei
name: Eckel, Carter
name: Warrilow, Jacob Cutshall Kennedy
name: O'Brien, John
name: Schaibley, John R.
name: Leroy, Brian J.
name: Wang, Wei-Gang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Heusler alloys based magnetic tunnel junctions can potentially provide high magnetoresistance, small damping and fast switching. Here junctions with Co2FeAl as a ferromagnetic electrode are fabricated by room temperature sputtering on Si/SiO2 substrates. The doping of Boron in Co2FeAl is found to have a large positive impact on the structural, magnetic and transport properties of the junctions, with a reduced interfacial roughness and substantial improved tunneling magnetoresistance. A two-level magnetoresistance is also observed in samples annealed at low temperature, which is believed to be related to the memristive effect of the tunnel barrier with impurities.
description: 9 pages, 4 figures