cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Toward construction of a consistent field theory with Poincare covariance in terms of step-function-type basis functions showing confinement/deconfinement, mass-gap and Regge trajectory for non-pure/pure non-Abelian gauge fields
Creators: name: Fukushima, Kimichika
name: Sato, Hikaru
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: This article is a review by the authors concerning the construction of a Poincar${\rm \acute{e}}$ covariant (owing to spacetime continuum) field-theoretic formalism in terms of step-function-type basis functions without ultraviolet divergences. This formalism analytically derives confinement/deconfinement, mass-gap and Regge trajectory for non-Abelian gauge fields, and gives solutions for self-interacting scalar fields. Fields propagate in spacetime continuum and fields with finite degrees of freedom toward continuum limit have no ultraviolet divergence. Basis functions defined in a parameter spacetime are mapped to real spacetime. The authors derive a new solution comprised of classical fields as a vacuum and quantum fluctuations, leading to the linear potential between the particle and antiparticle from the Wilson loop. The Polyakov line gives finite binding energies and reveals the deconfining property at high temperatures. The quantum action yields positive mass from the classical fields and quantum fluctuations produces the Coulomb potential. Pure Yang-Mills fields show the same mass-gap owing to the particle-antiparticle pair creation. The Dirac equation under linear potential is analytically solved in this formalism, reproducing the principal properties of Regge trajectories at a quantum level. Further outlook mentions a possibility of the difference between conventional continuum and present wave functions responsible for the cosmological constant.
description: v6: 42 pages; typos corrected; to appear in International Journal of Modern Physics A (title shortened)
Superconducting spin valves controlled by spiral re-orientation in B20-family magnets
Creators: name: Pugach, N. G.
name: Safonchik, M.
name: Champel, T.
name: Zhitomirsky, M. E.
name: Lähderanta, E.
name: Eschrig, M.
name: Lacroix, C.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We propose a superconducting spin-triplet valve, which consists of a superconductor and an itinerant magnetic material, with the magnet showing an intrinsic non-collinear order characterized by a wave vector that may be aligned in a few equivalent preferred directions under control of a weak external magnetic field. Re-orienting the spiral direction allows one to controllably modify long-range spin-triplet superconducting correlations, leading to spin-valve switching behavior. Our results indicate that the spin-valve effect may be noticeable. This bilayer may be used as a magnetic memory element for cryogenic nanoelectronics. It has the following advantages in comparison to superconducting spin valves proposed previously: (i) it contains only one magnetic layer, which may be more easily fabricated and controlled, (ii) its ground states are separated by a potential barrier, which solves the "half-select" problem of the addressed switch of memory elements.
description: 6 pages, 2 figures, Revised version: main text and Fig. 2 slightly modified, more or less as published
Introducing the FirstLight project: UV luminosity function and scaling relations of primeval galaxies
Creators: name: Ceverino, Daniel
name: Glover, Simon
name: Klessen, Ralf
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We introduce the FirstLight project that aims to generate a large database of high-resolution, zoom-in simulations of galaxy formation around the epoch of reionisation ($z\geq6$). The first results of this program agree well with recent observational constraints at z=6-8, including the UV luminosity function and galaxy stellar mass function, as well as the scaling relationships between halo mass, stellar mass, and UV magnitude. The UV luminosity function starts to flatten below MUV>-14 due to stellar feedback in halos with maximum circular velocities of V=30-40 km/s. The power-law slope of the luminosity function evolves rapidly with redshift, reaching a value of alpha=-2.5 at z=10. On the other hand, the galaxy stellar mass function evolves slowly with time between z=8-10, in particular at the low-mass end.
description: 8 pages, 9 figures, accepted at MNRAS
Hierarchy construction and non-Abelian families of generic topological orders
Creators: name: Lan, Tian
name: Wen, Xiao-Gang
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Category Theory (math.CT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We generalize the hierarchy construction to generic 2+1D topological orders (which can be non-Abelian) by condensing Abelian anyons in one topological order to construct a new one. We show that such construction is reversible and leads to a new equivalence relation between topological orders. We refer to the corresponding equivalent class (the orbit of the hierarchy construction) as "the non-Abelian family". Each non-Abelian family has one or a few root topological orders with the smallest number of anyon types. All the Abelian topological orders belong to the trivial non-Abelian family whose root is the trivial topological order. We show that Abelian anyons in root topological orders must be bosons or fermions with trivial mutual statistics between them. The classification of topological orders is then greatly simplified, by focusing on the roots of each family: those roots are given by non-Abelian modular extensions of representation categories of Abelian groups.
description: 4+20 pages with a series of tables, comments welcome
Quantum walk of a Bose-Einstein condensate in the Brillouin zone
Creators: name: Alberti, Andrea
name: Wimberger, Sandro
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We propose a realistic scheme to implement discrete-time quantum walks in the Brillouin zone (i.e., in quasimomentum space) with a spinor Bose-Einstein condensate. Relying on a static optical lattice to suppress tunneling in real space, the condensate is displaced in quasimomentum space in discrete steps conditioned upon the internal state of the atoms, while short pulses periodically couple the internal states. We show that tunable twisted boundary conditions can be implemented in a fully natural way by exploiting the periodicity of the Brillouin zone. The proposed setup does not suffer from off-resonant scattering of photons and could allow a robust implementation of quantum walks with several tens of steps at least. In addition, onsite atom-atom interactions can be used to simulate interactions with infinitely long range in the Brillouin zone.
description: 9 pages, 4 figures; in the new version, added a discussion about decoherence in the appendix
Fluids, Superfluids and Supersolids: Dynamics and Cosmology of Self Gravitating Media
Creators: name: Celoria, Marco
name: Comelli, Denis
name: Pilo, Luigi
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute cosmological perturbations for a generic self-gravitating media described by four derivatively- coupled scalar fields. Depending on the internal symmetries of the action for the scalar fields, one can describe perfect fluids, superfluids, solids and supersolids media. Symmetries dictate both dynamical and thermodynamical properties of the media. Generically, scalar perturbations include, besides the gravitational potential, an additional non-adiabatic mode associated with the entropy per particle σ. While perfect fluids and solids are adiabatic with σ constant in time, superfluids and supersolids feature a non-trivial dynamics for σ. Special classes of isentropic media with zero σ can also be found. Tensor modes become massive for solids and supersolids. Such an effective approach can be used to give a very general and symmetry driven modelling of the dark sector.
description: 26 pages, no figures. Final version published in JCAP with few typos corrected
Comoving stars in Gaia DR1: An abundance of very wide separation co-moving pairs
Creators: name: Oh, Semyeong
name: Price-Whelan, Adrian M.
name: Hogg, David W.
name: Morton, Timothy D.
name: Spergel, David N.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The primary sample of the {\it Gaia} Data Release 1 is the Tycho-Gaia Astrometric Solution (TGAS): $\approx$ 2 million Tycho-2 sources with improved parallaxes and proper motions relative to the initial catalog. This increased astrometric precision presents an opportunity to find new binary stars and moving groups. We search for high-confidence comoving pairs of stars in TGAS by identifying pairs of stars consistent with having the same 3D velocity using a marginalized likelihood ratio test to discriminate candidate comoving pairs from the field population. Although we perform some visualizations using (bias- corrected) inverse parallax as a point estimate of distance, the likelihood ratio is computed with a probabilistic model that includes the covariances of parallax and proper motions and marginalizes the (unknown) true distances and 3D velocities of the stars. We find 13,085 comoving star pairs among 10,606 unique stars with separations as large as 10 pc (our search limit). Some of these pairs form larger groups through mutual comoving neighbors: many of these pair networks correspond to known open clusters and OB associations, but we also report the discovery of several new comoving groups. Most surprisingly, we find a large number of very wide ($>1$ pc) separation comoving star pairs, the number of which increases with increasing separation and cannot be explained purely by false-positive contamination. Our key result is a catalog of high-confidence comoving pairs of stars in TGAS. We discuss the utility of this catalog for making dynamical inferences about the Galaxy, testing stellar atmosphere models, and validating chemical abundance measurements.
description: published in AJ with minor revision; A web visualization of the result is available at http://smoh.space/vis/gaia-comoving-stars
Moderate deviation analysis for classical communication over quantum channels
Creators: name: Chubb, Christopher T.
name: Tan, Vincent Y. F.
name: Tomamichel, Marco
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We analyse families of codes for classical data transmission over quantum channels that have both a vanishing probability of error and a code rate approaching capacity as the code length increases. To characterise the fundamental tradeoff between decoding error, code rate and code length for such codes we introduce a quantum generalisation of the moderate deviation analysis proposed by Altug and Wagner as well as Polyanskiy and Verdu. We derive such a tradeoff for classical-quantum (as well as image-additive) channels in terms of the channel capacity and the channel dispersion, giving further evidence that the latter quantity characterises the necessary backoff from capacity when transmitting finite blocks of classical data. To derive these results we also study asymmetric binary quantum hypothesis testing in the moderate deviations regime. Due to the central importance of the latter task, we expect that our techniques will find further applications in the analysis of other quantum information processing tasks.
description: 24 pages, 1 figure. Published version. See also concurrent work by Cheng and Hsieh, arXiv:1701.03195
What hadron collider is required to discover or falsify natural supersymmetry?
Creators: name: Baer, Howard
name: Barger, Vernon
name: Gainer, James S.
name: Huang, Peisi
name: Savoy, Michael
name: Serce, Hasan
name: Tata, Xerxes
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Weak scale supersymmetry (SUSY) remains a compelling extension of the Standard Model because it stabilizes the quantum corrections to the Higgs and W, Z boson masses. In natural SUSY models these corrections are, by definition, never much larger than the corresponding masses. Natural SUSY models all have an upper limit on the gluino mass, too high to lead to observable signals even at the high luminosity LHC. However, in models with gaugino mass unification, the wino is sufficiently light that supersymmetry discovery is possible in other channels over the entire natural SUSY parameter space with no worse than 3% fine-tuning. Here, we examine the SUSY reach in more general models with and without gaugino mass unification (specifically, natural generalized mirage mediation), and show that the high energy LHC (HE-LHC), a pp collider with \sqrt{s}=33 TeV, will be able to detect the SUSY signal over the entire allowed mass range. Thus, HE-LHC would either discover or conclusively falsify natural SUSY with better than 3% fine-tuning using a conservative measure that allows for correlations among the model parameters.
description: 7 pages; 5 png/pdf figures; revised version coincides with published version
Dynamic scaling of the restoration of rotational symmetry in Heisenberg quantum antiferromagnets
Creators: name: Weinberg, Phillip
name: Sandvik, Anders
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We apply imaginary-time evolution, ${\rm e}^{-τH}$, to study relaxation dynamics of gapless quantum antiferromagnets described by the spin-rotation invariant Heisenberg Hamiltonian ($H$). Using quantum Monte Carlo simulations, we propagate an initial state with maximal order parameter $m^z_s$ (the staggered magnetization) in the $z$ spin direction and monitor the expectation value $\langle m^z_s\rangle $ as a function of the time $τ$. Different system sizes of lengths $L$ exhibit an initial size-independent relaxation of $\langle m^z_s\rangle$ toward its value the spontaneously symmetry-broken state, followed by a size-dependent final decay to zero. We develop a generic finite-size scaling theory which shows that the relaxation time diverges asymptotically as $L^z$ where $z$ is the dynamic exponent of the low energy excitations. We use the scaling theory to develop a way of extracting the dynamic exponent from the numerical finite-size data. We apply the method to spin-$1/2$ Heisenberg antiferromagnets on two different lattice geometries; the two-dimensional (2D) square lattice as well as a site-diluted square lattice at the percolation threshold. In the 2D case we obtain $z=2.001(5)$, which is consistent with the known value $z=2$, while for the site-dilutes lattice we find $z=3.90(1)$. This is an improvement on previous estimates of $z\approx 3.7$. The scaling results also show a fundamental difference between the two cases: In the 2D system the data can be collapsed onto a common scaling function even when $\langle m^z_s\rangle$ is relatively large, reflecting the Anderson tower of quantum rotor states with a common dynamic exponent $z=2$. For the diluted lattice, the scaling works only for small $\langle m^z_s\rangle$, indicating a mixture of different relaxation time scaling between the low energy states.
Point-Particle Effective Field Theory II: Relativistic Effects and Coulomb/Inverse-Square Competition
Creators: name: Burgess, C. P.
name: Hayman, Peter
name: Rummel, Markus
name: Williams, Matt
name: Zalavari, Laszlo
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We apply point-particle effective field theory (PPEFT) to compute the leading shifts due to finite-size source effects in the Coulomb bound energy levels of a relativistic spinless charged particle. This is the analogue for spinless electrons of the contribution of the charge-radius of the source to these levels, and we disagree with standard calculations in several ways. Most notably we find there are two effective interactions with the same dimension that contribute to leading order in the nuclear size. One is the standard charge-radius contribution, while the other is a contact interaction whose leading contribution to $δE$ arises linearly in the small length scale, $ε$, characterizing the finite-size effects, and is suppressed by $(Zα)^5$. We argue that standard calculations miss the contributions of this second operator because they err in their choice of boundary conditions at the source for the wave-function of the orbiting particle. PPEFT predicts how this boundary condition depends on the source's charge radius, as well as on the orbiting particle's mass. Its contribution turns out to be crucial if the charge radius satisfies $ε\lesssim (Zα)^2 a_B$, with $a_B$ the Bohr radius, since then relativistic effects become important. We show how the problem is equivalent to solving the Schrödinger equation with competing Coulomb, inverse-square and delta-function potentials, which we solve explicitly. A similar enhancement is not predicted for the hyperfine structure, due to its spin-dependence. We show how the charge-radius effectively runs due to classical renormalization effects, and why the resulting RG flow is central to predicting the size of the energy shifts. We discuss how this flow is relevant to systems having much larger-than-geometric cross sections, and the possible relevance to catalysis of reactions through scattering with monopoles.
description: LaTeX, 22 pages plus appendices, v3: revised appendices, made more precise and concise discussion about proton radius for mesonic systems
Evaluating the Friction of Rotary Joints in Molecular Machines
Creators: name: Hogg, Tad
name: Moses, Matthew S.
name: Allis, Damian G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A computationally-efficient method for evaluating friction in molecular rotary bearings is presented. This method estimates drag from fluctuations in molecular dynamics simulations via the fluctuation-dissipation theorem. This is effective even for simulation times short compared to a bearing's energy damping time and for rotation speeds comparable to or below typical thermal values. We apply this method to two molecular rotary bearings of similar size at 300K: previously studied nested (9,9)/(14,14) double-walled carbon nanotubes and a hypothetical rotary joint consisting of single acetylenic bonds in a rigid diamondoid housing. The acetylenic joint has a rotational frictional drag coefficient of $2 \times 10^{-35}\,\mbox{kg m${}^2$/s}$. The friction for the nested nanotubes is 120 times larger, comparable to values reported by previous studies. This fluctuation-based method could evaluate dissipation in a variety of molecular systems with similarly rigid and symmetric bearings.
description: V2 compares results with simulations at higher speed and lower temperature; and adds minor clarifications
Core filling and snaking instability of dark solitons in spin-imbalanced superfluid Fermi gases
Creators: name: Reichl, Matthew D.
name: Mueller, Erich J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We use the time-dependent Bogoliubov de Gennes equations to study dark solitons in three-dimensional spin-imbalanced superfluid Fermi gases. We explore how the shape and dynamics of dark solitons are altered by the presence of excess unpaired spins which fill their low-density core. The unpaired particles broaden the solitons and suppress the transverse snake instability. We discuss ways of observing these phenomena in cold atom experiments.
description: 6 pages, 3 figures; Appendix with details of split-step method
การจัดการมรดกรูปแบบดิจิทัลในยุคแห่งการแปรรูปทางดิจิทัล: “พินัยกรรมดิจิทัล” คืออะไร?
Creators: name: สุวลักษณ์ ขันธ์ปรึกษา
Publisher: name: สำนักวิชานิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง
Year: 2566
Subjects: มรดกรูปแบบดิจิทัล
แบบแห่งพินัยกรรม
กฎหมายมรดก

description: วารสารนิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง, 6, 2, 149-160
ความหมายของ “กฎหมาย” ภายใต้แนวคิดว่าด้วยสัญญาประชาคมของรุสโซ
Creators: name: ณัฐดนัย นาจันทร์
Publisher: name: สำนักวิชานิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง
Year: 2566
Subjects: กฎหมาย
รุสโซ
สัญญาประชาคม

description: วารสารนิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง, 6, 2, 161-170
การแข่งขันเสมือนจริง: คำสัญญาและภยันตรายของเศรษฐกิจที่ถูกขับเคลื่อนโดยอัลกอริทึม
Creators: name: อาภาเพ็ญ ปันดวง
Publisher: name: สำนักวิชานิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง
Year: 2566
Subjects: กฎหมายการแข่งขันทางการค้า
การจำกัดการแข่งขัน
การกำหนดราคาโดยอัลกอริทึม

description: วารสารนิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง, 6, 2, 171-185
Influence of manganese ions concentration on structural and elastic properties in recycled window glasses by using ultrasonic technique and FTIR spectroscopy
Creators: name: Natsupon Chutithanapanon
Publisher: name: Faculty of Science, Ubon Ratchathani University
Year: 2023
Subjects: Glass
Recycled window glasses
Ultrasonic technique
FTIR spectroscopy

description: Journal of Science and Science Education, 6, 2, 171-180
Psychedelics and Facial Expressions: the impact of an LSD microdose on the process of encoding emotional facial expressions
Creators: name: Rowland, Alicia
Publisher: name: University of Chicago
Year: 2022
Subjects: subject: LSD
subject: Microdose
subject: Emotional Facial Expressions
subject: Event-related potentials
subject: Event-related spectral perturbations
subject: Intertrial Coherence

description: While LSD may have had a harsh reputation in decades previous, current research has been investigating its potential as a therapeutic modality. It has been shown that full doses of LSD are capable of providing therapeutic effects however, the concept of “microdosing”, or the repeated use of very low doses has become increasingly popular. Yet, the literature does not provide consistent results to explain LSD’s effects. The objective of the current study was to examine the effects of LSD (13 µg and 26 µg) versus placebo by use of electroencephalogram, event-related potential (ERP), event-related spectral perturbation (ERSP), and intertrial coherence (ITC) responses in healthy adults. Twenty healthy men and women, ages 18 to 35, participated in three EEG sessions in which they received placebo or LSD (13 µg and 26 µg) under double-blind conditions. During peak drug effect, EEG recordings were obtained by use of electrodes placed on scalp to identify the P300 and N170 components evoked during the visual oddball task. During the oddball task, LSD reduced ERP amplitudes of the P300 and N170 components. ERSPs exhibited decreases in power for the alpha frequency band and some theta frequencies. ITCs displayed relatively uniform distribution between trials. The reductions in P300 and N170 amplitudes were similar to those seen in full doses of LSD. Therefore, it is feasible to predict that microdoses of LSD may result in subtle behavioral and cognitive changes without requiring the full psychedelic effects of the drug.
Trace of the twisted Heisenberg Category
Creators: name: Oğuz, Can Ozan
name: Reeks, Michael
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 81R10, 20C08, 17B65, 18D10

description: We show that the trace decategorification, or zeroth Hochschild homology, of the twisted Heisenberg category defined by Cautis and Sussan is isomorphic to a quotient of $W^-$, a subalgebra of $W_{1+\infty}$ defined by Kac, Wang, and Yan. Our result is a twisted analogue of that by Cautis, Lauda, Licata, and Sussan relating $W_{1+\infty}$ and the trace decategorification of the Heisenberg category.
description: To appear in Communications in Math. Physics, 36 pages, tikz diagrams
Isolation of bacteria contained in vermicompost with antifungal activity of chili anthracnose
Creators: name: Saowapha Surawut
Publisher: name: Faculty of Science, Ubon Ratchathani University
Year: 2023
Subjects: Vermicompost
Bacteria
Inhibition
Chili Anthracnose

description: Journal of Science and Science Education, 6, 2, 181-191
Synthesis and Modification of CoZnAl Layered Double Hydroxides with Magnetic Nanoparticle and Chitosan for Brilliant Green Dye Adsorption
Creators: name: Suparb Tamuang
Publisher: name: Faculty of Science, Ubon Ratchathani University
Year: 2023
Subjects: Layered double hydroxides
Adsorption
Dyes
Magnetic nanoparticles
Chitosan, Brilliant green

description: Journal of Science and Science Education, 6, 2, 206-215
Effective potential in Lorentz-breaking field theory models
Creators: name: Scarpelli, A. P. Baeta
name: Brito, L. C. T.
name: Felipe, J. C. C.
name: Nascimento, J. R.
name: Petrov, A. Yu.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate explicitly the one-loop effective potential in different Lorentz-breaking field theory models. First, we consider a Yukawa-like theory and, then, some examples of Lorentz-violating extensions of scalar QED. We observed, for the extended QED models, that the resulting effective potential converges to the known result in the limit in which Lorentz-symmetry is restored. Besides, the one-loop corrections to the effective potential in all the cases we studied depend on the background tensors responsible for the Lorentz symmetry violation. This have consequences in physical quantities like, for example, in the induced mass due to Coleman-Weinberg mechanism.
description: Version accepted for publication in EPJC
Agroforestry & Parliament's Report on Sustainable Carbon Cycles
Creators: name: LAWSON, Gerry
Publisher: name: Zenodo
Year: 2023
Subjects: Carbon Farming
Agroforestry
Afforestation
DigitAF

description: Policy Briefing #24 welcomes approval of the “compromise amendments” to the COMENVI draft report (‘own-initiative procedure - rapporteur MEP Bernhuber, EPP/AT) on the “Sustainable Carbon Cycles Communication”.  The agreed text reinforces the importance of agroforestry and agroecological farming principles within carbon farming and stresses the need for targets to be included in revised versions of the CAP Strategic Plans.  EURAF however regrets a) that stress is not put on the updating of carbon farming and LULUCF targets in revisions of national Energy and Climate Plans - which are due to be sent to Brussels in draft form by June 2023; b) that there is no requirement for Member States to consult on these plans or to make them public; c) that Parliament failed to comment on the chronic under-achievement of Member States in meeting their tree planting targets, and the risk that this poses to achievement of the EU’s “Fit for 55” targets.
description: EURAF Policy Briefing #24
Development of UBU-ASLC system for supporting the teacher professional development program: A case study of Asperger's syndrome learning for Thai educators
Creators: name: Nadh Ditcharoen
Publisher: name: Faculty of Science, Ubon Ratchathani University
Year: 2023
Subjects: Professional training
teacher professional development
knowledge transfer
web application
Asperger's syndrome

description: Journal of Science and Science Education, 6, 2, 216-227
An orientation-based unification of young jetted AGN: the case of 3C 286
Creators: name: Berton, M.
name: Foschini, L.
name: Caccianiga, A.
name: Ciroi, S.
name: Congiu, E.
name: Cracco, V.
name: Frezzato, M.
name: La Mura, G.
name: Rafanelli, P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In recent years, the old paradigm according to which only high-mass black holes can launch powerful relativistic jets in active galactic nuclei (AGN) has begun to crumble. The discovery of $γ$-rays coming from narrow-line Seyfert 1 galaxies (NLS1s), usually considered young and growing AGN harboring a central black hole with mass typically lower than 10$^8$ M$_\odot$, indicated that also these low-mass AGN can produce powerful relativistic jets. The search for parent population of $γ$-ray emitting NLS1s revealed their connection with compact steep-spectrum sources (CSS). In this proceeding we present a review of the current knowledge of these sources, we present the new important case of 3C 286, classified here for the fist time as NLS1, and we finally provide a tentative orientation based unification of NLS1s and CSS sources.
description: 12 pages, 3 figures. Proceeding of the conference "Quasars at all cosmic epochs", held in Padova, April 2-7, 2017, published on Frontiers in Astronomy and Space Sciences
Mythical models : reflections of Iranian traditions in the classical accounts of Median and early Achaemenid royalty
Creators: name: Zarghamee, Reza
Publisher: name: The University of St Andrews
Year: 2022
Subjects: Achaemenid historiography
Herodotus
Ctesias
Shahnameh
Iranian myths and legends
Zoroastrianism
Ancient Iranian religion
Deioces narrative
Cyrus Sagas
Darius I

description: This study fills a gap in Achaemenid studies by evaluating possible relationships between the classical accounts of Median and early Achaemenid royalty, on the one hand, and Iranian mythical and legendary traditions, on the other. That Herodotus and other classical authors based their accounts on a sub-structure of Near Eastern traditions long has been recognized. However, the Iranian element has been neglected for various reasons, including the disparateness of the Iranian sources, which has prompted speculation that the Medes and Persians lacked familiarity with the relevant traditions. This study begins by reviewing evidence and past interpretations regarding the general proposition that Achaemenid oral traditions featured an intertwining of myth and history. Next comes an evaluation of evidence, primarily onomastic, indicating Median and Persian familiarity with variations of the myths and legends reflected in the extant sources. These findings suggest that a comparison of the classical sources to Iranian traditions is worthwhile. The applied methodology resembles that used in comparative mythology, with a focus on circumstances in which details found in later Iranian sources may be deemed likely to have existed in Achaemenid traditions. Three case studies identify parallels and possible dependence or interdependence between classical narratives and Iranian traditions: (1) Herodotus’ account of Deioces and tales of mythical royal founders, (2) the accounts of Cyrus and tales of dragon-slayers, and (3) the accounts of Darius’ coup and tales of dragon-slayers, as they relate to the principle of legitimate kingship. The case studies support the ancient authors’ claims to have drawn on Iranian traditions and underscore narrative elements that reflect Greek reinterpretation or embellishment. The findings of this study also shed light on the typology and development of the Iranian mythical and legendary traditions and provide possible scenarios for the Iranians’ puzzling amnesia regarding the Medes and early Achaemenids.
The effects of inquiry-based learning activities on the heterogeneous mixture separation on academic achievement and analytical thinking abilities of Grade-6 students
Creators: name: Chulida Hemtasin
Publisher: name: Faculty of Science, Ubon Ratchathani University
Year: 2023
Subjects: Inquiry-based learning activities
Academic achievement
Analytical thinking

description: Journal of Science and Science Education, 6, 2, 228-240
Sharp Gagliardo-Nirenberg inequalities in fractional Coulomb-Sobolev spaces
Creators: name: Bellazzini, Jacopo
name: Ghimenti, Marco
name: Mercuri, Carlo
name: Moroz, Vitaly
name: Van Schaftingen, Jean
Publisher: name: arXiv
Year: 2016
Subjects: subject: Functional Analysis (math.FA)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 46E35, 39B62, 35Q55

description: We prove scaling invariant Gagliardo-Nirenberg type inequalities of the form $$\|φ\|_{L^p(\mathbb{R}^d)}\le C\|φ\|_{\dot H^{s}(\mathbb{R}^d)}^β \left(\iint_{\mathbb{R}^d \times \mathbb{R}^d} \frac{|φ(x)|^q\,|φ(y)|^q}{|x - y|^{d-α}} dx dy\right)^γ,$$ involving fractional Sobolev norms with $s>0$ and Coulomb type energies with $01$.
description: 27 pages, introduction and references updated
Corral Framework: Trustworthy and Fully Functional Data Intensive Parallel Astronomical Pipelines
Creators: name: Cabral, Juan B.
name: Sánchez, Bruno
name: Beroiz, Martín
name: Domínguez, Mariano
name: Lares, Marcelo
name: Gurovich, Sebastián
name: Granitto, Pablo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Software Engineering (cs.SE)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Data processing pipelines represent an important slice of the astronomical software library that include chains of processes that transform raw data into valuable information via data reduction and analysis. In this work we present Corral, a Python framework for astronomical pipeline generation. Corral features a Model-View-Controller design pattern on top of an SQL Relational Database capable of handling: custom data models; processing stages; and communication alerts, and also provides automatic quality and structural metrics based on unit testing. The Model-View-Controller provides concept separation between the user logic and the data models, delivering at the same time multi-processing and distributed computing capabilities. Corral represents an improvement over commonly found data processing pipelines in Astronomy since the design pattern eases the programmer from dealing with processing flow and parallelization issues, allowing them to focus on the specific algorithms needed for the successive data transformations and at the same time provides a broad measure of quality over the created pipeline. Corral and working examples of pipelines that use it are available to the community at https://github.com/toros-astro.
description: 19 pages, 3 figures, accepted for publication at Astronomy and Computing. Code available at https://github.com/toros-astro/corral
The Importance of Antipersistence for Traffic Jams
Creators: name: Krause, Sebastian M.
name: Habel, Lars
name: Guhr, Thomas
name: Schreckenberg, Michael
Publisher: name: arXiv
Year: 2017
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Universal characteristics of road networks and traffic patterns can help to forecast and control traffic congestion. The antipersistence of traffic flow time series has been found for many data sets, but its relevance for congestion has been overseen. Based on empirical data from motorways in Germany, we study how antipersistence of traffic flow time-series impacts the duration of traffic congestion on a wide range of time scales. We find a large number of short lasting traffic jams, which implies a large risk for rear-end collisions.
description: 6 pages, 8 figures
Homological vanishing for the Steinberg representation
Creators: name: Ash, Avner
name: Putman, Andrew
name: Sam, Steven V
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Topology (math.AT)
subject: Group Theory (math.GR)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20J05, 20G10

description: For a field $k$, we prove that the $i$th homology of the groups $GL_n(k)$, $SL_n(k)$, $Sp_{2n}(k)$, $SO_{n,n}(k)$, and $SO_{n,n+1}(k)$ with coefficients in their Steinberg representations vanish for $n \geq 2i+2$.
description: 21 pages, 1 figure; major revision; to appear in Compositio Mathematica
การศึกษาการตระหนักรู้และการรับรู้ต่อการบูรณาการทักษะโฟร์ซีของทักษะในศตวรรษที่ 21 กับการเรียนการสอนภาษาอังกฤษในระดับชั้นมัธยมศึกษาปีที่ 1 ของครูผู้สอนชาวภูฏาน
Creators: name: Kinzang Wangmo
name: Patchara Boonteerarak
Publisher: name: วารสารมหาวิทยาลัยพายัพ
Year: 2023
Subjects: ทักษะโฟร์ซี
การตระหนักรู้
การรับรู้
การเรียนการสอนภาษาอังกฤษ

description: วารสารมหาวิทยาลัยพายัพ, 33, 1, 1
The Results of STEAM Education with the Miro application on academic achievement and problem-solving skills on purification topic of grade-8 students
Creators: name: Sumalee Tientongdee
Publisher: name: Faculty of Science, Ubon Ratchathani University
Year: 2023
Subjects: Academic achievement
Problem-solving skills
STEAM Education
Miro application

description: Journal of Science and Science Education, 6, 2, 251-259
Effective lepton flavor violating $\boldsymbol{H\ell_i\ell_j}$ vertex from right-handed neutrinos within the mass insertion approximation
Creators: name: Arganda, E.
name: Herrero, M. J.
name: Marcano, X.
name: Morales, R.
name: Szynkman, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work we present a new computation of the lepton flavor violating Higgs boson decays that are generated radiatively to one-loop from heavy right-handed neutrinos. We work within the context of the inverse seesaw model with three $ν_R$ and three extra singlets $X$, but the results could be generalized to other low scale seesaw models. The novelty of our computation is that it uses a completely different method by means of the mass insertion approximation which works with the electroweak interaction states instead of the usual 9 physical neutrino mass eigenstates of the inverse seesaw model. This method also allows us to write the analytical results explicitly in terms of the most relevant model parameters, that are the neutrino Yukawa coupling matrix $Y_ν$ and the right-handed mass matrix $M_R$, which is very convenient for a phenomenological analysis. This $Y_ν$ matrix, being generically nondiagonal in flavor space, is the only responsible for the induced charged lepton flavor violating processes of our interest. We perform the calculation of the decay amplitude up to order ${\cal O}(Y_ν^2+Y_ν^4)$. We also study numerically the goodness of the mass insertion approximation results. In the last part we present the computation of the relevant one-loop effective vertex $H\ell_i\ell_j$ for the lepton flavor violating Higgs decay which is derived from a large $M_R$ mass expansion of the form factors. We believe that our simple formula found for this effective vertex can be of interest for other researchers who wish to estimate the $H \to \ell_i \bar \ell_j$ rates in a fast way in terms of their own preferred input values for the relevant model parameters $Y_ν$ and $M_R$.
description: 36 pages, 15 figures. This version v3 matches the manuscript published in PRD
title: Investigation of chalcophile element fractionation processes in the oceanic crust by trace element analysis of magmatic sulphides
Creators: name: Schäfer, Wiebke
name: Keith, Manuel
name: Regelous, Marcel
name: Holtz, Francois
name: Klemd, Reiner
name: Kutzschbach, Martin
Publisher: name: Deutsche Geologische Gesellschaft - Geologische Vereinigung e.V. (DGGV)
Year: 2022

description:
The fractionation of chalcophile trace elements during magmatic processes is strongly controlled by the segregation of immiscible sulphide liquids, which is a common feature in convergent and divergent plate margins [1-2]. To constrain the partitioning behaviour of these elements during magmatic processes, in-situ LA-ICP-MS analyses were performed on magmatic sulphide droplets and related fresh volcanic glass from mid-ocean ridges, back-arc basins, island arcs and the Troodos ophiolite on Cyprus. Minerals associated with the sulphide droplets are mainly olivine in mid-ocean ridge basalts and Fe-Ti oxides in more evolved island arc rocks, suggesting a different timing of sulphide saturation. Reduced mid-ocean ridge magmas seem to segregate a sulphide liquid in an early stage, whereas more oxidised magmas in subduction zones form a sulphide liquid in a later stage triggered by redox changes [3]. Surprisingly, systematic differences in trace element contents and partition coefficients between sulphide liquid and silicate melt were not observed, despite the different redox conditions and differences in the timing of sulphide segregation between these settings. However, within each sample, a great variance in the trace element contents of sulphide droplets is observed. Whether this is related to variations in the chalcophile element contents of the primary magmas between plate tectonic settings remains unknown [4].

[1] Patten, C. et al. (2013), Chemical Geology, 358, 170–188. [2] Keith, M. et al. (2017), Chemical Geology, 451, 67–77. [3] Jenner, F. E. et al. (2010), Journal of Petrology, 51, 2445-2464. [4] Lee, C. A. et al. (2012), Science, 336, 64-68.
Zeeman interaction and Jahn-Teller effect in $Γ_8$ multiplet
Creators: name: Iwahara, Naoya
name: Vieru, Veacheslav
name: Ungur, Liviu
name: Chibotaru, Liviu F.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present a thorough analysis of the interplay of magnetic moment and the Jahn-Teller effect in the $Γ_8$ cubic multiplet. We find that in the presence of dynamical Jahn-Teller effect, the Zeeman interaction remains isotropic, whereas the $g$ and $G$ factors can change their signs. The static Jahn-Teller distortion also can change the sign of these $g$ factors as well as the nature of the magnetic anisotropy. Combining the theory with state-of-the-art {\it ab initio} calculations, we analyzed the magnetic properties of Np$^{4+}$ and Ir$^{4+}$ impurity ions in cubic environment. The calculated $g$ factors of Np$^{4+}$ impurity agree well with experimental data. The {\it ab initio} calculation predicts strong Jahn-Teller effect in Ir$^{4+}$ ion in cubic environment and the strong vibronic reduction of $g$ and $G$ factors.
description: 12 pages, 8 figures, minor correction
Tetramer Bound States in Heteronuclear Systems
Creators: name: Schmickler, C. H.
name: Hammer, H. -W.
name: Hiyama, E.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate the universal spectrum of trimer and tetramer states in heteronuclear mixtures of ultracold atoms with different masses in the vicinity of the heavy-light dimer threshold. To extract the energies, we solve the three- and four-body problem for simple two- and three-body potentials tuned to the universal region using the Gaussian expansion method. We focus on the case of one light particle of mass $m$ and two or three heavy bosons of mass $M$ with resonant heavy-light interactions. We find that trimer and tetramer cross into the heavy-light dimer threshold at almost the same point and that as the mass ratio $M/m$ decreases, the distance between the thresholds for trimer and tetramer states becomes smaller. We also comment on the possibility of observing exotic three-body states consisting of a dimer and two atoms in this region and compare with previous work.
description: 19 pages, 6 figures, final version, added some remarks and one reference and fixed notation
Wavelet-Based Characterization of Small-Scale Solar Emission Features at Low Radio Frequencies
Creators: name: Suresh, Akshay
name: Sharma, Rohit
name: Oberoi, Divya
name: Das, Srijan B.
name: Pankratius, Victor
name: Timar, Brian
name: Lonsdale, Colin J.
name: Bowman, Judd D.
name: Briggs, Frank
name: Cappallo, Roger J.
name: Corey, Brian E.
name: Deshpande, Avinash A.
name: Emrich, David
name: Goeke, Robert
name: Greenhill, Lincoln J.
name: Hazelton, Bryna J.
name: Johnston-Hollitt, Melanie
name: Kaplan, David L.
name: Kasper, Justin C.
name: Kratzenberg, Eric
name: Lynch, Mervyn J.
name: McWhirter, S. Russell
name: Mitchell, Daniel A.
name: Morales, Miguel F.
name: Morgan, Edward
name: Ord, Stephen M.
name: Prabu, Thiagaraj
name: Rogers, Alan E. E.
name: Roshi, Anish
name: Shankar, N. Udaya
name: Srivani, K. S.
name: Subrahmanyan, Ravi
name: Tingay, Steven J.
name: Waterson, Mark
name: Wayth, Randall B.
name: Webster, Rachel L.
name: Whitney, Alan R.
name: Williams, Andrew
name: Williams, Christopher L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Low radio frequency solar observations using the Murchison Widefield Array have recently revealed the presence of numerous weak, short-lived and narrow-band emission features, even during moderately quiet solar conditions. These non-thermal features occur at rates of many thousands per hour in the 30.72 MHz observing bandwidth, and hence, necessarily require an automated approach for their detection and characterization. Here, we employ continuous wavelet transform using a mother Ricker wavelet for feature detection from the dynamic spectrum. We establish the efficacy of this approach and present the first statistically robust characterization of the properties of these features. In particular, we examine distributions of their peak flux densities, spectral spans, temporal spans and peak frequencies. We can reliably detect features weaker than 1 SFU, making them, to the best of our knowledge, the weakest bursts reported in literature. The distribution of their peak flux densities follows a power law with an index of -2.23 in the 12-155 SFU range, implying that they can provide an energetically significant contribution to coronal and chromospheric heating. These features typically last for 1-2 seconds and possess bandwidths of about 4-5 MHz. Their occurrence rate remains fairly flat in the 140-210 MHz frequency range. At the time resolution of the data, they appear as stationary bursts, exhibiting no perceptible frequency drift. These features also appear to ride on a broadband background continuum, hinting at the likelihood of them being weak type-I bursts.
description: 15 pages, 14 figures, Accepted for publication in ApJ
ปัจจัยที่มีผลต่อส่วนประสมทางการตลาดในการเลือกซื้อ เครื่องจักรกลการเกษตร ในจังหวัดเชียงใหม่
Creators: name: เขมิกา ธนธำรงกุล
name: ปรีดา ศรีนฤวรรณ
Publisher: name: วารสารมหาวิทยาลัยพายัพ
Year: 2023
Subjects: ส่วนประสมทางการตลาด
เครื่องจักรกลการเกษตร
การตัดสินใจซื้อเครื่องจักรกลการเกษตร

description: วารสารมหาวิทยาลัยพายัพ, 33, 1, 18