cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Structure, metamorphism, and geochronology of the Northern Wolverine complex near Chase Mountain, Aiken Lake map area, British Columbia
Creators: name: Parrish, Randall Richardson
Publisher: name: University of British Columbia
Year: 2010

description: The Wolverine Complex (Armstrong, 1949; Roots, 1954) and similar rocks to the northwest are of Precambrian age, correlate with Winderemere-type stratigraphy, and are poly-metamorphic and poly-deformational. Wolverine rocks near Chase Mountain have experienced two periods of tight to isoclinal folding (F1, F2) overprinted by one or more periods of northwest-trending large-scale open folding (F3), small-scale crenulation folding of various orientations, and minor faulting. The two earlier periods of folding were accompanied by metamorphism culminating in amphibolite facies at the close of F2. These early folds are recumbent to gently inclined, and the geometry of F2 is consistent with north-eastward transport of rocks in nappe-like fashion. An F3 large-scale fold deformed earlier foliations into an upright to steeply eastward inclined antiform which correlates with structures mapped to the north by Mansy (1972, 1974). Geochronometric data strongly suggest that metamorphic culmination occured in mid-Cretaceous or earlier time, and that many rocks in widespread areas south of 56½°N have experienced resetting of K-Ar and Rb-Sr dates during the Eocene. A stock of biotite quartz monzonite, termed the Blackpine Lake granitic stock, has a Rb-Sr whole rock isochron age of 62±7 m.y. @ 0.7052 ± .0002 Sr 87/86[sub i] and a mineral isochron age of 44.7±2 m.y., and it intrudes the Wolverine Complex. In surrounding schists, gneisses, pegmatites, and muscovite-bearing granitic rocks related to the metamorphism, Rb-Sr mineral dates (muscovite, plagioclase, K-feldspar, whole rock) range from 52-84 m.y. and reflect partial to complete resetting, whereas K-Ar dates are entirely reset to 43-47 m.y. Rb-Sr mineral dates on biotite from metamorphic rocks are anomalously younger than K-Ar dates, a problem which is not understood. Though Eocene volcanic rocks and sediments indicative of rapid uplift occur within or flanking the Omineca Crystalline Belt, their spatial distribution bears no relationship to the areas of resetting of K-Ar and Rb-Sr dates. Though an entirely satisfactory explanation remains elusive, the resetting of dates must in part be due to the thermal effect of intrusions of granitic rock similar to the Blackpine Lake granitic stock which is shown to have disturbed dates in surrounding metamorphic rocks.
Abbildung der Hochwasserretention durch hydrologische und hydrodynamische Modelle unter unterschiedlichen Randbedingungen : Sensitivitätsanalyse am Donauabschnitt zwischen Neu-Ulm und Donauswörth
Creators: name: Skublics, Daniel
Publisher: name: Bundesanstalt für Gewässerkunde, Koblenz
Year: 2014
Subjects: subject: Water resources research

description: Hydrologie und Wasserbewirtschaftung / BfG – Jahrgang: 58.2014,3 - ISSN 1439-1783
A Case Study of Vehicle Route Optimization
Creators: name: Lesch, Veronika
name: König, Maximilian
name: Kounev, Samuel
name: Stein, Anthony
name: Krupitzer, Christian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: In the last decades, the classical Vehicle Routing Problem (VRP), i.e., assigning a set of orders to vehicles and planning their routes has been intensively researched. As only the assignment of order to vehicles and their routes is already an NP-complete problem, the application of these algorithms in practice often fails to take into account the constraints and restrictions that apply in real-world applications, the so called rich VRP (rVRP) and are limited to single aspects. In this work, we incorporate the main relevant real-world constraints and requirements. We propose a two-stage strategy and a Timeline algorithm for time windows and pause times, and apply a Genetic Algorithm (GA) and Ant Colony Optimization (ACO) individually to the problem to find optimal solutions. Our evaluation of eight different problem instances against four state-of-the-art algorithms shows that our approach handles all given constraints in a reasonable time.
A curvature theory for discrete surfaces based on mesh parallelity
Creators: name: Bobenko, Alexander I.
name: Pottmann, Helmut
name: Wallner, Johannes
Publisher: name: arXiv
Year: 2009
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 52Cxx, 53A10

description: We consider a general theory of curvatures of discrete surfaces equipped with edgewise parallel Gauss images, and where mean and Gaussian curvatures of faces are derived from the faces' areas and mixed areas. Remarkably these notions are capable of unifying notable previously defined classes of surfaces, such as discrete isothermic minimal surfaces and surfaces of constant mean curvature. We discuss various types of natural Gauss images, the existence of principal curvatures, constant curvature surfaces, Christoffel duality, Koenigs nets, contact element nets, s-isothermic nets, and interesting special cases such as discrete Delaunay surfaces derived from elliptic billiards.
On the quantum cohomology of adjoint varieties
Creators: name: Chaput, Pierre-Emmanuel
name: Perrin, Nicolas
Publisher: name: arXiv
Year: 2009
Subjects: subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 14M15, 14N35

description: We study the quantum cohomology of quasi-minuscule and quasi-cominuscule homogeneous spaces. The product of any two Schubert cells does not involve powers of the quantum parameter higher than 2. With the help of the quantum to classical principle we give presentations of the quantum cohomology algebras. These algebras are semi-simple for adjoint non coadjoint varieties and some properties of the induced strange duality are shown.
description: 39 pages
Optimization of self-similar factor approximants
Creators: name: Yukalov, V. I.
name: Gluzman, S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The problem is analyzed of extrapolating power series, derived for an asymptotically small variable, to the region of finite values of this variable. The consideration is based on the self-similar approximation theory. A new method is suggested for defining the odd self-similar factor approximants by employing an optimization procedure. The method is illustrated by several examples having the mathematical structure typical of the problems in statistical and chemical physics. It is shown that the suggested method provides a good accuracy even when the number of terms in the perturbative power series is small.
description: Latex file, 16 pages
Action and Index Spectra and Periodic Orbits in Hamiltonian Dynamics
Creators: name: Ginzburg, Viktor L.
name: Gurel, Basak Z.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Symplectic Geometry (math.SG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 53D40; 37J45; 70H12

description: The main theme of this paper is the connection between the existence of infinitely many periodic orbits for a Hamiltonian system and the behavior of its action or index spectrum under iterations. We use the action and index spectra to show that any Hamiltonian diffeomorphism of a closed, rational manifold with zero first Chern class has infinitely many periodic orbits and that, for a general rational manifold, the number of geometrically distinct periodic orbits is bounded from below by the ratio of the minimal Chern number and half of the dimension. These generalizations of the Conley conjecture follow from another result proved here asserting that a Hamiltonian diffeomorphism with a symplectically degenerate maximum on a closed rational manifold has infinitely many periodic orbits. We also show that for a broad class of manifolds and/or Hamiltonian diffeomorphisms the minimal action--index gap remains bounded for some infinite sequence of iterations and, as a consequence, whenever a Hamiltonian diffeomorphism has finitely many periodic orbits, the actions and mean indices of these orbits must satisfy a certain relation. Furthermore, for Hamiltonian diffeomorphisms of the n-dimensional complex projective space with exactly n+1 periodic orbits a stronger result holds. Namely, for such a Hamiltonian diffeomorphism, the difference of the action and the mean index on a periodic orbit is independent of the orbit, provided that the symplectic structure on the projective space is normalized to be in the same cohomology class as the first Chern class.
description: 46 pages, 1 figure
Resolution of the mystery of counter-intuitive photon correlations in far off-resonance emission from a quantum dot-cavity system
Creators: name: Winger, Martin
name: Volz, Thomas
name: Tarel, Guillaume
name: Portolan, Stefano
name: Badolato, Antonio
name: Hennessy, Kevin
name: Hu, Evelyn
name: Beveratos, Alexios
name: Finley, Jonathan
name: Savona, Vincenzo
name: Imamoglu, Atac
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Cavity quantum-electrodynamics experiments using an atom coupled to a single radiation-field mode have played a central role in testing foundations of quantum mechanics, thus motivating solid-state implementations using single quantum dots coupled to monolithic nano-cavities. In stark contrast to their atom based counterparts, the latter experiments revealed strong cavity emission, even when the quantum dot is far off resonance. Here we present experimental and theoretical results demonstrating that this effect arises from the mesoscopic nature of quantum dot confinement, ensuring the presence of a quasi-continuum of transitions between excited quantum dot states that are enhanced by the cavity mode. Our model fully explains photon correlation measurements demonstrating that photons emitted at the cavity frequency are essentially uncorrelated with each other even though they are generated by a single quantum dot.
description: 5 pages, 4 figures
A mean-field approach to the propagation of field patterns in stratified magneto rotational turbulence
Creators: name: Gressel, Oliver
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Local shearing box simulations of stratified magneto rotational turbulence invariably exhibit cyclic field patterns which propagate away from the disc midplane. A common explanation for this is magnetic buoyancy. The recent analysis by Shi et al. however shows that the flow is buoyantly stable below one disc scale height H, necessitating an alternative explanation in this region. We here conduct and analyse direct numerical simulations to explain the observed behaviour by means of a mean-field description. Apart from the mean radial and azimuthal field, we monitor the small-scale current helicity, which we propose as a key indicator for saturation. Reconstructing the horizontally averaged field, we demonstrate that the problem can be reduced to a one-dimensional induction equation. By means of the so-called test field method, we then determine the underlying closure parameters. Our analysis shows that, apart from a possible direct MRI dynamo, two distinct indirect dynamo mechanisms operate in the disc. This resolves the issue of the "wrong" sign of the MRI dynamo effect. Finally, we use the obtained closure parameters to run a dynamically quenched dynamo model. This model approximately recovers the observed field patterns in the mean fields. Moreover, the model reproduces the prevailing parity and the distinct phase pattern in the small-scale current helicity. The latter property might open a potential route to understand the saturation of MRI induced turbulence.
description: 8 pages, 6 figures, accepted for publication in MNRAS
Kink solutions in logarithmic scalar field theory: Excitation spectra, scattering, and decay of bions
Creators: name: Belendryasova, Ekaterina
name: Gani, Vakhid A.
name: Zloshchastiev, Konstantin G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We consider the (1+1)-dimensional Lorentz-symmetric field-theoretic model with logarithmic potential having a Mexican-hat form with two local minima similar to that of the quartic Higgs potential in conventional electroweak theory with spontaneous symmetry breaking and mass generation. We demonstrate that this model allows topological solutions -- kinks. We analyze the kink excitation spectrum, and show that it does not contain any vibrational modes. We also study the scattering dynamics of kinks for a wide range of initial velocities. The critical value of the initial velocity occurs in kink-antikink collisions, which thus differentiates two regimes. Below this value, we observe the capture of kinks and their fast annihilation; while above this value, the kinks bounce off and escape to spatial infinities. Numerical studies show no resonance phenomena in the kink-antikink scattering.
description: 10 pages, 9 figures; final/published version
Parametric PGD model used with orthogonal polynomials to assess efficiently the building's envelope thermal performance
Creators: name: Azam, Marie-Hélène
name: Berger, Julien
name: Guernouti, Sihem
name: Poullain, Philippe
name: Musy, Marjorie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: Estimating the temperature field of a building envelope could be a time-consuming task. The use of a reduced-order method is then proposed: the Proper Generalized Decomposition method. The solution of the transient heat equation is then re-written as a function of its parameters: the boundary conditions, the initial condition, etc. To avoid a tremendous number of parameters, the initial condition is parameterized. This is usually done by using the Proper Orthogonal Decomposition method to provide an optimal basis. Building this basis requires data and a learning strategy. As an alternative, the use of orthogonal polynomials (Chebyshev, Legendre) is here proposed.
Promoting Nutrition in Climate Smart Agriculture (Chin Language)
Creators: name: Itliong, Kirstein
name: Valdemoro, Camille
name: Calica, Michelle
name: Barbon, Wilson John
name: Myae, Chan
name: Noe, Su Myat
name: Gonsalves, Julian
Publisher: name: Zenodo
Year: 2020
Subjects: climate change
nutrition-sensitive agriculture
Myanmar
climate smart agriculture
smallholder agriculture
climate smart villages

description: This booklet resulted from the project titled, “Community Based Adaptation via Climate and nutrition smart village to address food insecurity in Myanmar. The project aimed to contribute to food and nutrition security, food safety and hygiene in the communities where the project beneficiaries live. Drawing from the project’s experiences and lessons, the booklet serves as a guide for enhancing food production, food safety and hygiene beginning from the smallest unit of the community – the family. This booklet is presented in Chin language of Myanmar.
title: Mechanisms of immunotherapy resistance in hepatocellular carcinoma
Creators: name: Drake, Thomas M.
Publisher: name: University of Glasgow
Year: 2023

description: Hepatocellular Carcinoma is the 7th most common cause of cancer and 2nd highest cause of cancer mortality worldwide. For patients who present with early stage disease, cure can be achieved by surgical resection or liver transplantation. The majority of patients, however, present with late stage disease where palliative therapies are the only treatment option.

Immunotherapy is an emerging and promising treatment option for patients with advanced HCC. It allows a cytotoxic response to be directed against tumours and in some cases, can provide complete and durable disease control. However, not all patients will respond to immune checkpoint inhibition. Evidence suggests this is likely due to tumour intrinsic molecular processes that induce primary or secondary resistance to immunotherapy. Therefore, there is an urgent need to identify new strategies to increase the efficacy of immunotherapy for all patients.

Here, I show the development of genetically engineered mouse models which recapitulate key aspects of the human HCC tumour microenvironment. Using a range of techniques including immunohistochemistry and sequencing, I demonstrate response to immunotherapy in these models is associated with the presence of immune cells and go on to identify potential mechanisms responsible for immunotherapy resistance.

This work will underpin the basis for testing new treatments in relevant model systems, with the overall objective of improving patient care through translation of new therapies which improve responses to immunotherapy.
Application of Rubber Wood Ash for Removal Nickel and Copper from Aqueous Solution
Creators: name: Mahamasuhaimi Masae *, Lek Sikong , Peerawas Kongsong, Phatcharee Phoempoon, Surasit Rawangwong And Witthaya Sririkun
Publisher: name: คณะสิ่งแวดล้อมและทรัพยากรศาสตร์
Year: 2013
Subjects: Adsorption/ Heavy metal/ Removal/ Rubber wood ash (RWA)

description: 2, 11, Environment and Natural Resources Journal
Copper, lead and zinc sorption on Wyoming montmorillonite
Creators: name: Cooper, Roger Brian
Publisher: name: University of British Columbia
Year: 2010

description: Exchange adsorption of Cu²⁺ , Pb²⁺ and Zn²⁺ for Na on Wyoming mont-morillonite, in chloride and nitrate electrolyte solutions less than 10⁻³ M total heavy metal concentration, can be modelled with a simple equilibrium ion-exchange reaction: Me²⁺ + 2 Na{Mont} = Me{Mont}₂ + 2 Na⁺ where Me. and Mont represent a given heavy metal and montmorillonite. Equilibrium constants for this reaction are equal for Cu²⁺ and Zn²⁺ at 3.0 ± 1, slightly less than that for Pb²⁺ at 5.0 ± 1, and comparable to constants calculated for monopositive exchange of K⁺ for Na⁺ (3.0 ± 1) and H⁺ for Na⁺ (2.5 ± .5). Above 10⁻³ M total metal concentration, heavy metal exchange for Na is complicated by variable total Na exchange capacity and by apparent anionic interferences. CuCl₂ and ZnCl₂ electrolyte solutions are more effective Na exchangers at 0.1 M than Cu(NO₃)₂, Pb(NO₃)₂, KC1 or HC1 solutions at the same concentration. Retardation factors of Cu, Pb and Zn spots eluted across thin layers of Na-montmorillonite (supported by silica gel) by aqueous NaCl and NaNO₃ solutions of 0.05 to 3.0 M concentration suggest, when interpreted with a rudimentary ion-exchange mass transfer model, that metals migrate mainly as monopositive species—perhaps as monohydroxo-complexes within the clay micelle. Precipitation of Pb chloride or hydroxy-chloride is indicated by multiple Pb spots on NaCl-eluted chromatograms.
Compatible Compacts? The 'social life' of vulnerability, migration governance and protection at the Zimbabwe - South Africa border
Creators: name: Vanyoro, Kudakwashe
name: Vearey, Jo
name: Maple, Nicholas
Publisher: name: Zenodo
Year: 2023
Subjects: PROTECT Consortium
vulnerability
migration governance
Zimbabwe
South Africa
international protection
Global Compacts
irregular migrants
humanitarianism

description: Do the Global Compacts’ engagement with questions of vulnerability match with the realities of African migrants living on the African continent? In this article, we engage this discussion using South Africa as a case study to examine the representation of vulnerability in the Global Compact on Migration (GCM) and Global Compact on Refugees (GCR) and how these approaches interact with the everyday experiences of irregular migrants in South Africa. We examine this relationship by looking at a humanitarian border space that has been significantly shaped and transformed by migration and humanitarian interventions in the past two decades.
On the double-plane plasma lensing
Creators: name: Er, Xinzhong
name: Wagner, Jenny
name: Mao, Shude
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Plasma lensing is the refraction of low-frequency electromagnetic rays due to cold free electrons in the universe. For sources at a cosmological distance, there is observational evidence of elongated, complex plasma structures along the line of sight requiring a multi-lens-plane description. To investigate the limits of single-plane plasma lensing, we set up a double-plane lens with a projected Gaussian electron density in each lens plane. We compare double-plane scenarios with corresponding effective single-plane configurations. Our results show how double-plane lenses can be distinguished from single-plane lenses by observables, i.e. resolved multiple image positions, relative magnifications, time delays, and pulse shapes. For plasma lensing of fast radio bursts, the observed pulse shape may be dominated by the lensing effect, allowing us to neglect the intrinsic source pulse shape to distinguish different lensing configurations. The time-domain observables turn out to be the most salient features to tell multi- and single-plane lenses apart.
description: 10 pages
Revising Clonostachys and allied genera in Bionectriaceae
Creators: name: Zhao, Lin
name: Groenewald, Johannes Z.
name: Hernández-Restrepo, Margarita
name: Schroers, Hans-Josef
name: Crous, Pedro W.
Publisher: name: Zenodo
Year: 2023
Subjects: Bionectriaceae
Clonostachys
Novel species
Taxonomy

description: Clonostachys (Bionectriaceae, Hypocreales) species are common soil-borne fungi that also occur as mycoparasites, or as endophytes, epiphytes, and saprotrophs in plants. The sexual morphs of Clonostachys spp. were placed in the genus Bionectria, which was further distinguished into six subgenera Astromata, Bionectria, Epiphloea, Myronectria, Uniparietina and Zebrinella. However, with the end of dual nomenclature, Clonostachys was recommended for conservation over Bionectria. Species of Clonostachys are typically characterised by penicillate, sporodochial, and, in many cases, dimorphic conidiophores (primary and secondary conidiophores). Primary conidiophores are mononematous, either verticillium-like or narrowly penicillate, and form heads of slimy conidial masses. Secondary conidiophores generally form imbricate conidia that can collapse to slimy masses that vary from white to pale orange, yellowish or green. In the present study, we investigated the species diversity within a collection of 453 strains of Clonostachys from the culture collection of the Westerdijk Fungal Biodiversity Institute in Utrecht, the Netherlands. Strains were analysed based on their morphological characters and DNA sequence of the nuclear ribosomal internal transcribed spacer (ITS), partial sequences for the 28S large subunit (LSU) nrDNA, partial RNA polymerase II second largest subunit (RPB2), partial translation elongation factor 1-alpha (TEF1) and β-tubulin (TUB2) gene regions. Based on these results, Clonostachys covers the subgenera Astromata, Bionectria, Myronectria and Zebrinella while the genus Sesquicillium is resurrected to accommodate the subgenera Epiphloea and Uniparietina. New taxa include 28 new species and eight new combinations. Further studies are presently underway to generate full genome sequences of these taxa to study the evolution of mycoparasitism, and investigate their biocontrol abilities.
MRI channel flows and their parasites
Creators: name: Latter, Henrik N.
name: Lesaffre, Pierre
name: Balbus, Steven A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Local simulations of the magnetorotational instability (MRI) in accretion disks can exhibit recurrent coherent structures called channel flows. The formation and destruction of these structures may play a role in the development and saturation of MRI-induced turbulence, and consequently help us understand the time-dependent accretion behaviour of certain astrophysical objects. Previous investigations have revealed that channel solutions are attacked by various parasitic modes, foremost of which is an analogue of the Kelvin-Helmholtz instability. We revisit these instabilities and show how they relate to the classical instabilities of plasma physics, the kink and pinch modes. However, we argue that in most cases channels emerge from developed turbulence and are eventually destroyed by turbulent mixing, not by the parasites. The exceptions are the clean isolated channels which appear in systems near criticality or which emerge from low amplitude initial conditions. These structures inevitably achieve large amplitudes and are only then destroyed, giving rise to eruptive behaviour.
description: 17 pages, 17 figures, accepted by MNRAS
title: ÐÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ñ Ð¿Ð¸ÑÐ°Ð½Ð¸Ñ Ð´ÐµÑÐµÐ¹ Ð² Ð´Ð¾ÑÐºÐ¾Ð»ÑÐ½Ð¾Ð¼ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°ÑÐµÐ»ÑÐ½Ð¾Ð¼ ÑÑÑÐµÐ¶Ð´ÐµÐ½Ð¸Ð¸, Ð¸Ð¼ÐµÑÑÐ¸Ñ Ð·Ð°Ð±Ð¾Ð»ÐµÐ²Ð°Ð½Ð¸Ðµ ÑÐ°Ñ Ð°ÑÐ½ÑÐ¹ Ð´Ð¸Ð°Ð±ÐµÑ, Ð½Ð¾ Ð½Ðµ Ð¸Ð¼ÐµÑÑÐ¸Ñ Ð¿ÑÐ¾ÑÐ¸Ð²Ð¾Ð¿Ð¾ÐºÐ°Ð·Ð°Ð½Ð¸Ð¹ Ð´Ð»Ñ Ð¿Ð¾ÑÐµÑÐµÐ½Ð¸Ñ ÐÐÐ£
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
Creators: name: ÐÐ°ÑÐ¸Ð»ÑÐµÐ²Ð°, ÐÐ¸Ð½Ð°Ð¸Ð´Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2018
Subjects: ÐÐÐ£
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Ð·Ð´Ð¾ÑÐ¾Ð²ÑÐµ Ð¸ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ðµ

description: Ð¦ÐµÐ»ÑÐ¼Ð¸ Ð¸ Ð·Ð°Ð´Ð°ÑÐ°Ð¼Ð¸ Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ ÑÐ²Ð»ÑÑÑÑÑ:
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Frequency Domain Hybrid-ARQ Chase Combining for Broadband MIMO CDMA Systems
Creators: name: Chafnaji, Houda
name: Ait-Idir, Tarik
name: Saoudi, Samir
name: Vasilakos, Athanasios V.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, we consider high-speed wireless packet access using code division multiple access (CDMA) and multiple-input multiple-output (MIMO). Current wireless standards, such as high speed packet access (HSPA), have adopted multi-code transmission and hybrid-automatic repeat request (ARQ) as major technologies for delivering high data rates. The key technique in hybrid-ARQ, is that erroneous data packets are kept in the receiver to detect/decode retransmitted ones. This strategy is refereed to as packet combining. In CDMA MIMO-based wireless packet access, multi-code transmission suffers from severe performance degradation due to the loss of code orthogonality caused by both interchip interference (ICI) and co-antenna interference (CAI). This limitation results in large transmission delays when an ARQ mechanism is used in the link layer. In this paper, we investigate efficient minimum mean square error (MMSE) frequency domain equalization (FDE)-based iterative (turbo) packet combining for cyclic prefix (CP)-CDMA MIMO with Chase-type ARQ. We introduce two turbo packet combining schemes: i) In the first scheme, namely "chip-level turbo packet combining", MMSE FDE and packet combining are jointly performed at the chip-level. ii) In the second scheme, namely "symbol-level turbo packet combining", chip-level MMSE FDE and despreading are separately carried out for each transmission, then packet combining is performed at the level of the soft demapper. The computational complexity and memory requirements of both techniques are quite insensitive to the ARQ delay, i.e., maximum number of ARQ rounds. The throughput is evaluated for some representative antenna configurations and load factors to show the gains offered by the proposed techniques.
description: Submitted to IEEE Transactions on Vehicular Technology (Apr 2009)
โรคตาแห้งและยาที่ใช้รักษา DRY EYE DISEASE AND DRUG THERAPY
Creators: name: สรายุทธ์ จันทร์มหเสถียร และ จันคนา บูรณะโอสถ
Publisher: name: คณะเภสัชศาสตร์/โรงพิมพ์ ม.ศิลปากร
Year: 2014
Subjects: โรคตาแห้ง, ฟิล์มน้ำตา, น้ำตาเทียม, ยาต้านการอักเสบ, ยากระตุ้นการหลั่งน้ำตา, ยาสร้างเมือกปกป้อง, dry eye, tear film, artificial tears, anti-inflammatory drugs, secretagogues, mucoprotective agents

description: 1 (Jan-June 2014 ), 9, ไทยไภษัชยนิพนธ์ Thai Bulletin of Pharmaceutical Science (TBPS)
On F-theory Quiver Models and Kac-Moody Algebras
Creators: name: Laamara, Rachid Ahl
name: Belhaj, Adil
name: Boya, Luis J.
name: Medari, Leila
name: Segui, Antonio
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss quiver gauge models with bi-fundamental and fundamental matter obtained from F-theory compactified on ALE spaces over a four dimensional base space. We focus on the base geometry which consists of intersecting F0=CP1xCP1 Hirzebruch complex surfaces arranged as Dynkin graphs classified by three kinds of Kac-Moody (KM) algebras: ordinary, i.e finite dimensional, affine and indefinite, in particular hyperbolic. We interpret the equations defining these three classes of generalized Lie algebras as the anomaly cancelation condition of the corresponding N =1 F-theory quivers in four dimensions. We analyze in some detail hyperbolic geometries obtained from the affine A base geometry by adding a node, and we find that it can be used to incorporate fundamental fields to a product of SU-type gauge groups and fields.
description: 13 pages; new equations added in section 3, one reference added and typos corrected
Evolution in Surface Morphology of Epitaxial Graphene Layers on SiC Induced by Controlled Structural Strain
Creators: name: Ferralis, Nicola
name: Kawasaki, Jason
name: Maboudian, Roya
name: Carraro, Carlo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The evolution in the surface morphology of epitaxial graphene films and 6H-SiC(0001) substrates is studied by electron channeling contrast imaging. Whereas film thickness is determined by growth temperature only, increasing growth times at constant temperature affect both internal stress and film morphology. Annealing times in excess of 8-10 minutes lead to an increase in the mean square roughness of SiC step edges to which graphene films are pinned, resulting in compressively stressed films at room temperature. Shorter annealing times produce minimal changes in the morphology of the terrace edges and result in nearly stress-free films upon cooling to room temperature.
description: 3 pages, 2 figures. Applied Physics Letters 93 (2008), 191916
Forecasting Crude Oil Price Using Event Extraction
Creators: name: Liu, Jiangwei
name: Huang, Xiaohong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: General Economics (econ.GN)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: Research on crude oil price forecasting has attracted tremendous attention from scholars and policymakers due to its significant effect on the global economy. Besides supply and demand, crude oil prices are largely influenced by various factors, such as economic development, financial markets, conflicts, wars, and political events. Most previous research treats crude oil price forecasting as a time series or econometric variable prediction problem. Although recently there have been researches considering the effects of real-time news events, most of these works mainly use raw news headlines or topic models to extract text features without profoundly exploring the event information. In this study, a novel crude oil price forecasting framework, AGESL, is proposed to deal with this problem. In our approach, an open domain event extraction algorithm is utilized to extract underlying related events, and a text sentiment analysis algorithm is used to extract sentiment from massive news. Then a deep neural network integrating the news event features, sentimental features, and historical price features is built to predict future crude oil prices. Empirical experiments are performed on West Texas Intermediate (WTI) crude oil price data, and the results show that our approach obtains superior performance compared with several benchmark methods.
description: 14 pages, 5 figures, 5 tables
Cryo-shift: Reducing domain shift in cryo-electron subtomograms with unsupervised domain adaptation and randomization
Creators: name: Bandyopadhyay, Hmrishav
name: Deng, Zihao
name: Ding, Leiting
name: Liu, Sinuo
name: Uddin, Mostofa Rafid
name: Zeng, Xiangrui
name: Behpour, Sima
name: Xu, Min
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: Cryo-Electron Tomography (cryo-ET) is a 3D imaging technology that enables the visualization of subcellular structures in situ at near-atomic resolution. Cellular cryo-ET images help in resolving the structures of macromolecules and determining their spatial relationship in a single cell, which has broad significance in cell and structural biology. Subtomogram classification and recognition constitute a primary step in the systematic recovery of these macromolecular structures. Supervised deep learning methods have been proven to be highly accurate and efficient for subtomogram classification, but suffer from limited applicability due to scarcity of annotated data. While generating simulated data for training supervised models is a potential solution, a sizeable difference in the image intensity distribution in generated data as compared to real experimental data will cause the trained models to perform poorly in predicting classes on real subtomograms. In this work, we present Cryo-Shift, a fully unsupervised domain adaptation and randomization framework for deep learning-based cross-domain subtomogram classification. We use unsupervised multi-adversarial domain adaption to reduce the domain shift between features of simulated and experimental data. We develop a network-driven domain randomization procedure with `warp' modules to alter the simulated data and help the classifier generalize better on experimental data. We do not use any labeled experimental data to train our model, whereas some of the existing alternative approaches require labeled experimental samples for cross-domain classification. Nevertheless, Cryo-Shift outperforms the existing alternative approaches in cross-domain subtomogram classification in extensive evaluation studies demonstrated herein using both simulated and experimental data.
description: 14 pages
Spherical Structures in Conformal Gravity and its Scalar-Tensor Extension
Creators: name: Brihaye, Y.
name: Verbin, Y.
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study spherically-symmetric structures in Conformal Gravity and in a scalar-tensor extension and gain some more insight about these gravitational theories. In both cases we analyze solutions in two systems: perfect fluid solutions and boson stars of a self-interacting complex scalar field. In the purely tensorial (original) theory we find in a certain domain of parameter space finite mass solutions with a linear gravitational potential but without a Newtonian contribution. The scalar-tensor theory exhibits a very rich structure of solutions whose main properties are discussed. Among them, solutions with a finite radial extension, open solutions with a linear potential and logarithmic modifications and also a (scalar-tensor) gravitational soliton. This may also be viewed as a static self-gravitating boson star in purely tensorial Conformal Gravity.
description: 24 pages, revised version, accepted for publication in Phys. Rev. D
Generation of two-photon EPR and Wstates
Creators: name: Cardoso, W. B.
name: Qiang, W. C.
name: Avelar, A. T.
name: Baseia, B.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we present a scheme for generation of two-photon EPR and W states in the cavity QED context. The scheme requires only one three-level Rydberg atom and two or three cavities. The atom is sent to interact with cavities previously prepared in vacuum states, via two-photon process. An appropriate choice of the interaction times one obtains the mentioned state with maximized fidelities. These specific times and the values of success probability and fidelity are discussed.
description: 4 pages, 5 figures
Elasticity of arrested short-ranged attractive colloids: homogeneous and heterogeneous glasses
Creators: name: Zaccone, Alessio
name: Wu, Hua
name: Del Gado, Emanuela
Publisher: name: arXiv
Year: 2009
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We evaluate the elasticity of arrested short-ranged attractive colloids by combining an analytically solvable elastic model with a hierarchical arrest scheme into a new approach, which allows to discriminate the microscopic (primary particle-level) from the mesoscopic (cluster-level) contribution to the macroscopic shear modulus. The results quantitatively predict experimental data in a wide range of volume fractions and indicate in which cases the relevant contribution is due to mesoscopic structures. On this basis we propose that different arrested states of short-ranged attractive colloids can be meaningfully distinguished as homogeneous or heterogeneous colloidal glasses in terms of the length-scale which controls their elastic behavior.
description: 3 figures, revised version, to appear in Physical Review Letters
Crystal chemistry of the Olivines at elevated temperatures
Creators: name: Lager, George Adolphe
Publisher: name: University of British Columbia
Year: 2010

description: Single crystal x-ray intensity data have been collected with a manual diffractometer utilizing flat-cone geometry for Ni-olivine, Ni₂SiO₄, (25°, 300°, 600° and 900°C), monticellite, Ca₁.₀₀Mg₀.₉₃Fe₀.₀₇SiO₄, (25°, 335°, 615° and 795°C) and giaucochroite, Ca₀.₉₈Mn₀.₈₇Mg₀.₁₀Zn₀.₀₅SiO₄ (25°, 300°, 600° and 800°C). Weighted anisotropic refinements resulted in residual (R) factors ranging from 0.026 to 0.045. Examination of these data together with data from high temperature refinements of forsterite (Smyth and Hazen, 1973), hortonolite (Brown and Prewitt, 1973) and fayalite (Smyth, 1975) indicates that the olivine structure expands primarily as a result of "bond length expansions in the non-tetrahedral sites. Three-dimensional strain theory has "been used to calculate the magnitude and directions of the principal axes of the thermal expansion ellipsoids for the polyhedra in the above olivines. The shapes and orientations of the thermal expansion ellipsoids for M(1) and M(2) octahedra are related to the topology and chemistry of the octahedra. The basic shape of the ellipsoid is a function of the structural configuration of the octahedron while its orientation is a function of the occupancy of the site. [the rest of the abstract can be found in the attached PDF file]
Coupled immobilized bi-enzymatic flow reactor employing cofactor regeneration of NAD+ using a thermophilic aldehyde dehydrogenase and lactate dehydrogenase
Creators: name: Shortall, Kim Leah
name: Arshi, Simin
name: Bendl, Simon
name: Xiao, Xinxin
name: Belochapkine, Serguei
name: DEMURTAS, DENISE
name: SOULIMANE, TEWFIK
name: MAGNER, EDMOND
Publisher: name: University of Limerick
Year: 2023
Subjects: subject: Chemical sciences
subject: FOS: Chemical sciences

description: he use of enzymes in biochemical processes is of interest due to their ability to work under mild conditions while attaining high reaction rates. A limitation in the use of enzymes such as oxidoreductases on a large scale lies with their requirement for costly cofactors, e.g. NAD+, in stoichiometric quantities. Cofactor regeneration mechanisms using bienzymatic recycling systems is an attractive way to increase productivity and efficiency. The thermophilic enzyme aldehyde dehydrogenase (ALDHTt) was immobilized directly from E. coli cell lysate, containing the expressed enzyme, onto Ni2+ activated Sepharose®. The system displayed a rate of conversion of approx. 63% NAD+ with reuse achievable for up to 5 cycles and residual activity of the enzyme upon storage of 93% after 7 days. L-Lactate dehydrogenase was immobilized in a second reactor module downstream of ALDHTt via two different methods, electrochemical entrapment in poly(3,4-ethylenedioxypyrrole) (PEDOP) and covalent attachment on glyoxyl agarose. Both reactors allowed for up to 100% conversion of NADH, however LDH@agarose proved superior in terms of reuse and storage. LDH@agarose displayed no reduction in activity after 6 cycles of use and retained 98% activity following 56 days storage. A coupled reactor containing immobilized ALDHTt–LDH was operated with the substrates hexanal, benzaldehyde, terephthalaldehyde and p-tolualdehyde. A particular advantage of the system is its ability to preferentially oxidise a single aldehyde group in substrates containing two aldehyde functional groups. The reactor demonstrated efficient cofactor regeneration under continual operation for up 24 h, with enhanced product yields.
Forward and inverse cascades in decaying two-dimensional electron magnetohydrodynamic turbulence
Creators: name: Wareing, C. J.
name: Hollerbach, R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Electron magnetohydrodynamic (EMHD) turbulence in two dimensions is studied via high-resolution numerical simulations with a normal diffusivity. The resulting energy spectra asymptotically approach a $k^{-5/2}$ law with increasing $R_B$, the ratio of the nonlinear to linear timescales in the governing equation. No evidence is found of a dissipative cutoff, consistent with non-local spectral energy transfer. Dissipative cutoffs found in previous studies are explained as artificial effects of hyperdiffusivity. Relatively stationary structures are found to develop in time, rather than the variability found in ordinary or MHD turbulence. Further, EMHD turbulence displays scale-dependent anisotropy with reduced energy transfer in the direction parallel to the uniform background field, consistent with previous studies. Finally, the governing equation is found to yield an inverse cascade, at least partially transferring magnetic energy from small to large scales.
description: 16 pages, 6 figures, accepted by Physics of Plasmas. For high resolution figures, please visit the PoP website or contact C.Wareing
The rigorous solution for the average distance of a Sierpinski network
Creators: name: Zhang, Zhongzhi
name: Chen, Lichao
name: Fang, Lujun
name: Zhou, Shuigeng
name: Zhang, Yichao
name: Guan, Jihong
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The closed-form solution for the average distance of a deterministic network--Sierpinski network--is found. This important quantity is calculated exactly with the help of recursion relations, which are based on the self-similar network structure and enable one to derive the precise formula analytically. The obtained rigorous solution confirms our previous numerical result, which shows that the average distance grows logarithmically with the number of network nodes. The result is at variance with that derived from random networks.
description: Definitive version (9 pages, 6 figures) published in J. Stat. Mech
THE SIGNIFICANCE OF MUSIC ART IN PRE-SCHOOL EDUCATION SYSTEM
Creators: name: Sharipov, Nigmatdjan
Publisher: name: Zenodo
Year: 2023

description: The article discusses the role of music in human life, its educational significance, and its role in the system of aesthetic education. Based on the opinions of famous scientists, it is shown that music is an integral part of the aesthetic education of young people in the family, preschool educational organizations, as well as in the school system. Taking into account that music is a powerful educational tool, it is emphasized that it is necessary to pay more serious attention to music lessons in preschool educational organizations.
Punctuated evolution due to delayed carrying capacity
Creators: name: Yukalov, V. I.
name: Yukalova, E. P.
name: Sornette, D.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Biological Physics (physics.bio-ph)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: A new delay equation is introduced to describe the punctuated evolution of complex nonlinear systems. A detailed analytical and numerical investigation provides the classification of all possible types of solutions for the dynamics of a population in the four main regimes dominated respectively by: (i) gain and competition, (ii) gain and cooperation, (iii) loss and competition and (iv) loss and cooperation. Our delay equation may exhibit bistability in some parameter range, as well as a rich set of regimes, including monotonic decay to zero, smooth exponential growth, punctuated unlimited growth, punctuated growth or alternation to a stationary level, oscillatory approach to a stationary level, sustainable oscillations, finite-time singularities as well as finite-time death.
description: Latex file, 58 pages, 29 figures. Published variant