cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Non-geometric Fluxes, Asymmetric Strings and Nonassociative Geometry
Creators: name: Blumenhagen, Ralph
name: Deser, Andreas
name: Lust, Dieter
name: Plauschinn, Erik
name: Rennecke, Felix
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study closed bosonic strings propagating both in a flat background with constant H-flux and in its T-dual configurations. We define a conformal field theory capturing linear effects in the flux and compute scattering amplitudes of tachyons, where the Rogers dilogarithm plays a prominent role. For the scattering of four tachyons, a fluxed version of the Virasoro-Shapiro amplitude is derived and its pole structure is analyzed. In the case of an R-flux background obtained after three T-dualities, we find indications for a nonassociative target-space structure which can be described in terms of a deformed tri-product. Remarkably, this product is compatible with crossing symmetry of conformal correlation functions. We finally argue that the R-flux background flows to an asymmetric CFT.
description: 37 + 15 pages, 2 figures
Enhancing synchronization by directionality in complex networks
Creators: name: Zeng, An
name: Son, Seung-Woo
name: Yeung, Chi Ho
name: Fan, Ying
name: Di, Zengru
Publisher: name: arXiv
Year: 2010
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We proposed a method called residual edge-betweenness gradient (REBG) to enhance synchronizability of networks by assignment of link direction while keeping network topology and link weight unchanged. Direction assignment has been shown to improve the synchronizability of undirected networks in general, but we find that in some cases incommunicable components emerge and networks fail to synchronize. We show that the REBG method can effectively avoid the synchronization failure ($R=λ_{2}^{r}/λ_{N}^{r}=0$) which occurs in the residual degree gradient (RDG) method proposed in Phys. Rev. Lett. 103, 228702 (2009). Further experiments show that REBG method enhance synchronizability in networks with community structure as compared with the RDG method.
description: 4 pages, 5 figures
A Proposal to Safely Recover the H.L. Hunley Submarine Located in Charleston, South Carolina - Report (Legacy 00-106)
Creators: name: Adams, Robert
Publisher: name: DoD Legacy Resource Management Program
Year: 1999
Subjects: subject: Charleston, South Carolina
valueUri: https://core.tdar.org/browse/geographic-keyword/77708/charleston-south-carolina
subject: Civil War
valueUri: https://core.tdar.org/browse/temporal-keyword/3089/civil-war
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Archaeological Feature
valueUri: https://core.tdar.org/browse/site-type/339/archaeological-feature
subject: Metal
valueUri: https://core.tdar.org/browse/material-type/11/metal
subject: H.L. Hunley
valueUri: https://core.tdar.org/browse/other-keyword/116334/hl-hunley
subject: submarine
valueUri: https://core.tdar.org/browse/other-keyword/154211/submarine
subject: Data Recovery Plan
valueUri: https://core.tdar.org/browse/other-keyword/3860/data-recovery-plan
subject: Engineering
valueUri: https://core.tdar.org/browse/other-keyword/935/engineering
subject: Underwater Archeology
valueUri: https://core.tdar.org/browse/other-keyword/4200/underwater-archeology
subject: Civil War
valueUri: https://core.tdar.org/browse/other-keyword/41208/civil-war
subject: Diving
valueUri: https://core.tdar.org/browse/other-keyword/68327/diving
subject: Data Recovery / Excavation
valueUri: https://core.tdar.org/browse/investigation-type/5/data-recovery-excavation
subject: Methodology, Theory, or Synthesis
valueUri: https://core.tdar.org/browse/investigation-type/6/methodology-theory-or-synthesis
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: This proposal discusses the drawbacks of the then-proposed method of lifting the H.L. Hunley from its resting place through a system of straps and outlines a procedure for a mechanical device to scoop up the submarine and its supporting surrounding sediment. The proposal includes a timetable for construction, testing, demonstration, and actual recovery of the Hunley.
H.L. Hunley General Recovery Procedures - Plan (Legacy 00-106)
Creators: name: Oceaneering International, Inc.
Publisher: name: DoD Legacy Resource Management Program
Year: 2000
Subjects: subject: Charleston, South Carolina
valueUri: https://core.tdar.org/browse/geographic-keyword/77708/charleston-south-carolina
subject: Civil War
valueUri: https://core.tdar.org/browse/temporal-keyword/3089/civil-war
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Archaeological Feature
valueUri: https://core.tdar.org/browse/site-type/339/archaeological-feature
subject: Metal
valueUri: https://core.tdar.org/browse/material-type/11/metal
subject: H.L. Hunley
valueUri: https://core.tdar.org/browse/other-keyword/116334/hl-hunley
subject: submarine
valueUri: https://core.tdar.org/browse/other-keyword/154211/submarine
subject: Data Recovery Plan
valueUri: https://core.tdar.org/browse/other-keyword/3860/data-recovery-plan
subject: Engineering
valueUri: https://core.tdar.org/browse/other-keyword/935/engineering
subject: Underwater Archeology
valueUri: https://core.tdar.org/browse/other-keyword/4200/underwater-archeology
subject: Civil War
valueUri: https://core.tdar.org/browse/other-keyword/41208/civil-war
subject: Diving
valueUri: https://core.tdar.org/browse/other-keyword/68327/diving
subject: Data Recovery / Excavation
valueUri: https://core.tdar.org/browse/investigation-type/5/data-recovery-excavation
subject: Methodology, Theory, or Synthesis
valueUri: https://core.tdar.org/browse/investigation-type/6/methodology-theory-or-synthesis
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: This document describes a detailed plan of the recovery procedure for the H.L. Hunley.
Strong mobility degradation in ideal graphene nanoribbons due to phonon scattering
Creators: name: Betti, Alessandro
name: Fiori, Gianluca
name: Iannaccone, Giuseppe
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the low-field phonon-limited mobility in armchair graphene nanoribbons (GNRs) using full-band electron and phonon dispersion relations. We show that lateral confinement suppresses the intrinsic mobility of GNRs to values typical of common bulk semiconductors, and very far from the impressive experiments on 2D graphene. Suspended GNRs with a width of 1 nm exhibit a mobility close to 500 cm^2/Vs at room temperature, whereas if the same GNRs are deposited on HfO2 mobility is further reduced to about 60 cm^2/Vs due to surface phonons. We also show the occurrence of polaron formation, leading to band gap renormalization of ~118 meV for 1 nm-wide armchair GNRs.
description: 11 pages, 4 figures
Removing the Veil: Interest of Military Land Managers in Using Declassified and Classified Imagery (Legacy 99-1749)
Creators: name: Lozar, Robert
name: Smith, Wade
name: Croisant, William
name: Rasmussen, Glenn
name: Hale, Thomas
Publisher: name: DoD Legacy Resource Management Program
Year: 2000
Subjects: subject: United States
valueUri: https://core.tdar.org/browse/geographic-keyword/10460/united-states
subject: Department of Defense
valueUri: https://core.tdar.org/browse/other-keyword/123614/department-of-defense
subject: Declassification
valueUri: https://core.tdar.org/browse/other-keyword/165933/declassification
subject: Military
valueUri: https://core.tdar.org/browse/other-keyword/1872/military
subject: Land Management
valueUri: https://core.tdar.org/browse/other-keyword/33969/land-management
subject: Cultural Resources
valueUri: https://core.tdar.org/browse/other-keyword/101507/cultural-resources
subject: Aerial Imagery
valueUri: https://core.tdar.org/browse/other-keyword/110182/aerial-imagery
subject: Aerial Photography
valueUri: https://core.tdar.org/browse/other-keyword/6087/aerial-photography
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: A report on the uses of imagery to support land management activities.
Supplementary document for Efficient tandem organic light-emitting diodes with non-doped structures - 4903328.pdf
Creators: name: Qin, Yue
name: Liu, Chenyang
name: Li, Ruiqing
name: Wang, Jiong
name: Lu, Yanna
name: Chen, Yuehua
name: Wang, Yuzhu
name: Xu, Yanan
name: Zhang, Xinwen
name: Huang, Wei
Publisher: name: Optica Publishing Group
Year: 2020
Subjects: Uncategorized

description: EL spectra of devices and table of WTOLEDs
Auslegung von Verstärkungen ermüdungsgeschädigter Stahlbauteile mit aufgeklebten Faserverbundwerkstoffen
Creators: name: Kasper, Yann J.
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2023
Subjects: Ermüdung
Rissfortschritt
Sanierung
Faserverstärkte Kunststoffe
Klebtechnik
Fatigue
Crack Propagation
Rehabilitation
Fiber Reinforced Plastics
Adhesive

description: Im Rahmen der Arbeit werden umfangreiche experimentelle und numerische Untersuchungen zum Rissfortschrittsverhalten in Stahlblechen unter zyklischer Beanspruchung, welche mit aufgeklebten CFK-Lamellen verstärkt wurden, sowie zum Trag- und Versagensverhalten geklebter CFK-Stahl-Überlappverbindungen durchgeführt. Anhand der Untersuchungsergebnisse wird ein ingenieurmäßiges bruchmechanisches Verfahren zur Abschätzung der Restlebensdauer CFK-verstärkter Stahlbleche abgeleitet und validiert.
A novel approach to finite element analysis of hip fractures due to sideways falls
Creators: name: Ariza, Oscar Rodrigo
Publisher: name: University of British Columbia
Year: 2014

description: There is currently a disagreement between the hips that today’s screening techniques identify as likely to fracture and those that actually fracture. Specimen-specific finite element (FE) analysis based on computed tomography (CT) data has been presented as a more sensitive technique than standard screening based on bone mineral density (BMD) to screen for and identify hips predisposed to fracture. However, published studies using this technique have applied loading scenarios that do not sufficiently resemble the falls that typically lead to fracture. In particular, the effects of dynamics and strain rate stiffening have been neglected in all relevant FE studies. It is my objective to explore here these previously neglected aspects. This thesis is divided into three sections focusing respectively on: 1) the effect of material stiffness and mapping techniques on a simplified quasi-static model; 2) the feasibility, accuracy, and model sensitivity of explicit dynamic FE analysis to simulate a fall impact on the femur; and 3) the feasibility of a novel multi-scale FE technique to analyse femoral bone behaviour at specific sites with a level of detail that resolves the trabecular structure. All models are compared against experimental data obtained from mechanical tests of femurs at appropriate loading rates. Results demonstrate that both dynamic and multi-scale modelling are feasible techniques that can be developed into powerful tools. Both quasi-static and dynamic FE models demonstrated sensitivity to material modulus-density relationship, with further work required to estimate the increased stiffness of bone during impact loading. For dynamic models, surface strain patterns matched fracture locations observed from high-speed video. The multi-scale technique demonstrated its value by identifying a potential stress concentration around a vascular hole that was otherwise hidden. This study demonstrates that explicit dynamic FE analysis is a feasible technique for modelling the altered bone behaviour observed during femoral impacts, yet further research is required to design material models appropriate for impact rates. It is also demonstrated that nested multi-scale FE modelling is not only feasible but also potentially useful to identify microstructural features of bone that might make it prone to fracture even in the setting of relatively high BMD.
Measuring the running Top quark mass
Creators: name: Langenfeld, Ulrich
name: Moch, Sven-Olaf
name: Uwer, Peter
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this contribution we discuss conceptual issues of current mass measurements performed at the Tevatron. In addition we propose an alternative method which is theoretically much cleaner and to a large extend free from the problems encountered in current measurements. In detail we discuss the direct determination of the top-quark's running mass from the cross section measurements performed at the Tevatron.
description: 8 pages, 4 figures. To appear in the proceedings of the 45th Rencontres de Moriond
Photonic realization of the relativistic Dirac oscillator
Creators: name: Longhi, Stefano
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A photonic realization of the Dirac oscillator (DO), i.e. of the relativistic extension of the quantum harmonic oscillator, is proposed for light propagation in fiber Bragg gratings. Transmission spectra clearly show the existence of electron and positron bound states of the DO, corresponding to resonance modes above and below the Bragg frequency, as well as the asymmetry of the energy spectrum for electron and positron branches.
Geophysical Surveys in Archaeology: Guidance for Surveyors and Sponsors - Report (Legacy 00-127)
Creators: name: Williams, Courtney
Publisher: name: DoD Legacy Resource Management Program
Year: 2003
Subjects: subject: Archaeological Feature
valueUri: https://core.tdar.org/browse/site-type/339/archaeological-feature
subject: Department of Defense
valueUri: https://core.tdar.org/browse/other-keyword/123614/department-of-defense
subject: Military Installation
valueUri: https://core.tdar.org/browse/other-keyword/159731/military-installation
subject: Archaeology
valueUri: https://core.tdar.org/browse/other-keyword/7074/archaeology
subject: Cultural Resource Management
valueUri: https://core.tdar.org/browse/other-keyword/11316/cultural-resource-management
subject: Geophysical Survey
valueUri: https://core.tdar.org/browse/other-keyword/91254/geophysical-survey
subject: Automated Tool for Archaeo-Geophysical Survey (ATAGS)
valueUri: https://core.tdar.org/browse/other-keyword/165932/automated-tool-for-archaeo-geophysical-survey-atags
subject: Architectural Survey
valueUri: https://core.tdar.org/browse/investigation-type/2/architectural-survey
subject: Methodology, Theory, or Synthesis
valueUri: https://core.tdar.org/browse/investigation-type/6/methodology-theory-or-synthesis

description: This report offers guidance documents and decision support tools to help cultural resource managers (CRMs) and field practitioners make effective use of geophysical techniques. The ATAGS (Automated Tool for Archaeo-Geophysical Survey) software tool, which allows the user to develop an effective survey design for a geophysical survey at a particular site, is described.
Modelling stellar populations at high redshift
Creators: name: Maraston, Claudia
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Stellar populations carry information about the formation of galaxies and their evolution up to the present epoch. A wealth of observational data are available nowadays, which are analysed with stellar population models in order to obtain key properties such as ages, star formation histories, stellar masses. Differences in the models and/or in the assumptions regarding the star formation history affect the derived properties as much as differences in the data. I shall review the interpretation of high-redshift galaxy data from a model perspective. While data quality dominates galaxy analysis at the highest possible redshifts (z>5), population modelling effects play the major part at lower redshifts. In particular, I discuss the cases of both star-forming galaxies at the peak of the cosmic star formation history as well as passive galaxies at redshift below 1 that are often used as cosmological probes. Remarks on the bridge between low and high-z massive galaxies conclude the contribution.
description: 7 pages, 7 figures, invited review at the IAU Symposium 277 "Tracing the Ancestry of Galaxies (on the land of our ancestors)", Ouagadougou (Burkina Faso), December 2010, Editors: Claude Carignan, Francoise Combes, Ken Freeman
Photon and neutrino emission from active galactic nuclei
Creators: name: Biermann, P. L.
name: Becker, J. K.
name: Caramete, L. I.
name: Fraschetti, F.
name: Kneiske, T.
name: Meli, A.
name: Stanev, T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Supermassive black holes in the centers of galaxies are very common. They are known to rotate, accrete, spin down and eject highly relativistic jets; those jets pointed at us all seem to show a spectrum with two strong bumps, one in the TeV photon range, and one in X-rays - ordered by the emission frequency of the first bump this constitutes the blazar sequence. Here we wish to explain this sequence as the combined interaction of electrons and protons with the magnetic field and radiation field at the first strong shockwave pattern in the relativistic jet. With two key assumptions on particle scattering, this concept predicts that the two basic maximum peak frequencies scale with the mass of the central black hole as $M_{BH}^{-1/2}$, have a ratio of $(m_p/m_e)^{3}$, and the luminosities with the mass itself $M_{BH}$. Due to strong losses of the leptons, the peak luminosities are generally the same, but with large variations around equality. This model predicts large fluxes in ultra high energy cosmic rays, and also large neutrino luminosities.
description: Invited talk at NOW 2010
Inequalities related to Lech's conjecture and other problems in local and graded algebra
Creators: name: Meng, Cheng
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 490499
subject: Pure mathematics not elsewhere classified

description: This thesis consists of four parts that study different topics in commutative algebra. The main results of the first part of the dissertation are in Chapter 3, which is based on the author’s paper [1]. Let R be a commutative Noetherian ring graded by a torsionfree abelian group G. We introduce the notion of G-graded irreducibility and prove that G-graded irreducibility is equivalent to irreducibility in the usual sense. This is a generalization of a result by Chen and Kim in the Z-graded case. We also discuss the concept of the index of reducibility and give an inequality for the indices of reducibility between any radical non-graded ideal and its largest graded subideal. The second topic is developed in Chapter 4 which is based on the author’s paper [2]. In this chapter, we prove that if P is a prime ideal of inside a polynomial ring S with dim S/P = r, and adjoining s general linear forms to the prime ideal changes the (r − s)-th Hilbert coefficient of the quotient ring by 1 and doesn’t change the 0th to (r − s − 1)-th Hilbert coefficients where s ≤ r, then the depth of S/P is n − s − 1. This criterion also tells us about possible restrictions on the generic initial ideal of a prime ideal inside a polynomial ring. The third part of the thesis is Chapter 5 which is based on the author’s paper [3]. Let R be a polynomial ring over a field. We introduce the concept of sequentially almost Cohen-Macaulay modules, describe the extremal rays of the cone of local cohomology tables of finitely generated graded R-modules which are sequentially almost Cohen-Macaulay, and also describe some cases when the local cohomology table of a module of dimension 3 has a nontrivial decomposition. The last part is Chapter 6 which is based on the author’s paper [4]. We introduce the notion of strongly Lech-independent ideals as a generalization of Lech-independent ideals defined by Lech and Hanes, and use this notion to derive inequalities on multiplicities of ideals. In particular, we prove a new case of Lech’s conjecture, namely, if (R, m) → (S, n) is a flat local extension of local rings with dim R = dim S, the completion of S is the completion of a standard graded ring over a field k with respect to the homogeneous maximal ideal, and the completion of mS is the completion of a homogeneous ideal, then e(R) ≤ e(S).
Bimetric Renormalization Group Flows in Quantum Einstein Gravity
Creators: name: Manrique, Elisa
name: Reuter, Martin
name: Saueressig, Frank
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The formulation of an exact functional renormalization group equation for Quantum Einstein Gravity necessitates that the underlying effective average action depends on two metrics, a dynamical metric giving the vacuum expectation value of the quantum field, and a background metric supplying the coarse graining scale. The central requirement of "background independence" is met by leaving the background metric completely arbitrary. This bimetric structure entails that the effective average action may contain three classes of interactions: those built from the dynamical metric only, terms which are purely background, and those involving a mixture of both metrics. This work initiates the first study of the full-fledged gravitational RG flow, which explicitly accounts for this bimetric structure, by considering an ansatz for the effective average action which includes all three classes of interactions. It is shown that the non-trivial gravitational RG fixed point central to the Asymptotic Safety program persists upon disentangling the dynamical and background terms. Moreover, upon including the mixed terms, a second non-trivial fixed point emerges, which may control the theory's IR behavior.
description: 35 pages, 3 figures
Studies of a novel bone-targeted nano drug delivery system with a HAP core-PSI coating structure for tanshinol injection
Creators: name: Yu, Fengbo
name: Wang, Hongyuan
name: Wang, Qiang
name: Zhai, Fengguo
name: Wang, Jinghua
name: Huang, Chunming
name: Cui, Liao
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Cancer

description: Tanshinol (Tan) has good therapeutic effects on osteoporosis, fracture, and bone trauma repair. However, it is easily oxidised, has low bioavailability and a short half-life. To solve these problems, the study aimed to develop a novel bone-targeted nano-sustained-release drug delivery system PSI-HAPs for the systemic administration of Tan. This proposed system has hydroxyapatite (HAP) as the core to load drug and polysuccinimide (PSI), PEG-PSI (Polyethylene glycol, PEG), and ALN-PEG-PSI (Alendronate sodium, ALN) as the coating materials to form nanoparticles. The article examines the various PSI-HAPs’ entrapping efficiency (EE, %), drug loading capacity (DLC, %), and distribution to determine the best PSI-HAP formulation in vivo. The in vivo experiment showed that the ALN-PEG-PSI-HAP (ALN-PEG/PSI molar ratio = 1:20) was the best preparation due to its higher distribution on bone (120 h) and lower distribution in the other tissues. The determined preparation was a uniformly spherical or sphere-like nanoparticle with a negative zeta potential. Additionally, it exhibited pH-sensitive drug release in PBS based on an in vitro drug release test. The proposed PSI-HAP preparations were prepared in the water solution using a facile preparation process without ultrasound, heating, and other conditions, which can significantly affect the stability of drugs.
Field-induced decay of quantum vacuum: visualizing pair production in a classical photonic system
Creators: name: Longhi, Stefano
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The phenomenon of vacuum decay, i.e. electron-positron pair production due to the instability of the quantum electrodynamics vacuum in an external field, is a remarkable prediction of Dirac theory whose experimental observation is still lacking. Here a classic wave optics analogue of vacuum decay, based on light propagation in curved waveguide superlattices, is proposed. Our photonic analogue enables a simple and experimentally-accessible visualization in space of the process of pair production as break up of an initially negative-energy Gaussian wave packet, representing an electron in the Dirac sea, under the influence of an oscillating electric field.
Supporting Information for "When and Where Did the Tibetan Plateau Uplift to Near-maximum Elevation: Evidence From North-south Trending Dikes in South Tibet"
Creators: name: Ma, Yiming
Publisher: name: figshare
Year: 2021
Subjects: subject: 40303 Geochronology
subject: FOS: Earth and related environmental sciences
subject: 40402 Geodynamics
subject: Geology
subject: 40406 Magnetism and Palaeomagnetism

description: Supporting Information including full details of models (Text S1) and the U–Pb zircon data of XG5 and XG8 (Table S1).
METHODOLOGY MODEL FOR IMPROVING THE ETHNO-PEDAGOGICAL CULTURE OF THE FUTURE MUSIC TEACHER
Creators: name: Tukhtasinov, Abror
Publisher: name: Zenodo
Year: 2023

description: This study focused on the model of methods used to improve the ethnopedagogical culture of future music teachers. Various pedagogical conditions and recommendations are included in the improvement of ethnopedagogical culture, and the model of methodical methods used in improving the ethnopedagogical culture of undergraduate music education students is highlighted.
Upper limits for undetected trace species in the stratosphere of Titan
Creators: name: Nixon, Conor A.
name: Achterberg, Richard K.
name: Teanby, Nicholas A.
name: Irwin, Patrick G. J.
name: Flaud, Jean-Marie
name: Kleiner, Isabelle
name: Dehayem-Kamadjeu, Alix
name: Brown, Linda R.
name: Sams, Robert L.
name: Bézard, Bruno
name: Coustenis, Athena
name: Ansty, Todd M.
name: Mamoutkine, Andrei
name: Vinatier, Sandrine
name: Bjoraker, Gordon L.
name: Jennings, Donald E.
name: Romani, Paul. N.
name: Flasar, F. Michael
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In this paper we describe a first quantitative search for several molecules in Titan's stratosphere in Cassini CIRS infrared spectra. These are: ammonia (NH3), methanol (CH3OH), formaldehyde (H2CO), and acetonitrile (CH3CN), all of which are predicted by photochemical models but only the last of which observed, and not in the infrared. We find non-detections in all cases, but derive upper limits on the abundances from low-noise observations at 25°S and 75°N. Comparing these constraints to model predictions, we conclude that CIRS is highly unlikely to see NH3 or CH3OH emissions. However, CH3CN and H2CO are closer to CIRS detectability, and we suggest ways in which the sensitivity threshold may be lowered towards this goal.
description: 11 pages plus 6 figure files
Non-autonomous 2-periodic Gumovski-Mira difference equations
Creators: name: Cima, Anna
name: Gasull, Armengol
name: Mañosa, Victor
Publisher: name: arXiv
Year: 2011
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 39A20, 39A11

description: We consider two types of non-autonomous 2-periodic Gumovski-Mira difference equations. We show that while the corresponding autonomous recurrences are conjugated, the behavior of the sequences generated by the 2-periodic ones differ dramatically: in one case the behavior of the sequences is simple (integrable) and in the other case it is much more complicated (chaotic). We also present a global study of the integrable case that includes which periods appear for the recurrence.
description: 20 pages, 11 figures
The Hyper-MUCHFUSS project: probing the Galactic halo with sdB stars
Creators: name: Tillich, A.
name: Heber, U.
name: Geier, S.
name: Hirsch, H.
name: Maxted, P. F. L.
name: Gänsicke, B. T.
name: Marsh, T. R.
name: Napiwotzki, R.
name: Østensen, R. H.
name: Scholz, R. -D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: High-velocity stars in the Galactic halo, e.g. the so-called hyper-velocity stars (HVS), are important tracers of the properties of the dark matter halo, in particular its mass. Based on the SDSS DR6 spectral database a search for the fastest stars among hot subdwarfs (sdB) in the halo is carried out to identify HVS, unbound to the Galaxy, and bound population II stars in order to derive a lower limit to the halo mass. The radial velocity measurements were verified at several telescopes to exclude radial velocity variable stars. Out of 88 stars observed in the follow-up campaign 39 stars were found to have constant radial velocities. For twelve of them we measured a proper motion significantly different from zero and obtained spectroscopic distances from quantitative spectral analysis to construct the full 6D phase space information for a kinematical study. The programme sdBs can be distinguished into two kinematical groups, one (G1) with low Galactic rotation typical of halo stars and a second one (G2) with rapid retrograde motion. The G1 objects crossed the Galactic plane in the central bulge, whereas the G2 stars did in the outer Galactic disc. J1211+1437 (G2) is a HVS candidate, as it is unbound to the Galaxy if the standard Galactic potential is adopted. We conclude that in the ejection scenario G1 stars might have been formed via the slingshot mechanism that invokes acceleration by tidal interaction of a binary with the central supermassive black hole. The G2 stars, however, would originate in the outskirts of the Galactic disc and not in the central bulge. J1211+1437 is the first unbound subdwarf B star, for which we can rule out the slingshot mechanism. Alternatively, we may assume that the stars are old population II stars and therefore have to be bound. Then the kinematics of J1211+1437 set a lower limit of 2 x 10^12 Msun to the mass of the Galactic dark matter halo.
description: 12 pages, 11 figures, accepted for publication in A&A
АЛЬТЕРНАТИВНЫЙ АНАЛИЗ АНГЛИЙСКИХ ПОСЛОВИЦ И АФОРИЗМОВ НА УЗБЕКСКОМ ЯЗЫКЕ
Creators: name: Нарзуллаева, Ф.О.
name: Асадов, А.Б.
Publisher: name: Zenodo
Year: 2023

description: Английские пословицы и афоризмы широко известны своей краткостью и проницательностью. Однако при переводе на другие языки, в том числе на узбекский, исходный смысл и культурные нюансы могут быть потеряны или изменены. Целью данной статьи является исследование альтернативного анализа английских пословиц и афоризмов на узбекском языке, проливающее свет на возникающие уникальные интерпретации и адаптации.
An Efficient Method For Solving Highly Anisotropic Elliptic Equations
Creators: name: Santilli, Edward
name: Scotti, Alberto
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences
subject: G.1.8; G.1.3
subject: 35J57, 65F10, 65F08, 65N22

description: Solving elliptic PDEs in more than one dimension can be a computationally expensive task. For some applications characterised by a high degree of anisotropy in the coefficients of the elliptic operator, such that the term with the highest derivative in one direction is much larger than the terms in the remaining directions, the discretized elliptic operator often has a very large condition number - taking the solution even further out of reach using traditional methods. This paper will demonstrate a solution method for such ill-behaved problems. The high condition number of the D-dimensional discretized elliptic operator will be exploited to split the problem into a series of well-behaved one and (D-1)-dimensional elliptic problems. This solution technique can be used alone on sufficiently coarse grids, or in conjunction with standard iterative methods, such as Conjugate Gradient, to substantially reduce the number of iterations needed to solve the problem to a specified accuracy. The solution is formulated analytically for a generic anisotropic problem using arbitrary coordinates, hopefully bringing this method into the scope of a wide variety of applications.
description: 37 pages, 11 figures
A Novel Jet Model: Magnetically Collimated, Radiation-Pressure Driven Jet
Creators: name: Takeuchi, S.
name: Ohsuga, K.
name: Mineshige, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Relativistic jets from compact objects are ubiquitous phenomena in the Unvierse, but their driving mechanism has been an enigmatic issue over many decades. Two basic models have been extensively discussed: magnetohydrodynamic (MHD) jets and radiation-hydrodynamic (RHD) jets. Currently, the former is more widely accepted, since magnetic field is expected to provide both the acceleration and collimation mechanisms, whereas radiation field cannot collimate outflow. Here, we propose a new type of jets, radiation-magnetohydrodynamic (RMHD) jets, based on our global RMHD simulation of luminous accretion flow onto a black hole shining above the Eddington luminosity. The RMHD jet can be accelerated up to the relativistic speed by the radiation-pressure force and is collimated by the Lorentz force of a magnetic tower, inflated magnetic structure made by toroidal magnetic field lines accumulated around the black hole, though radiation energy greatly dominates over magnetic energy. This magnetic tower is collimated by a geometrically thick accretion flow supported by radiation-pressure force. This type of jet may explain relativistic jets from Galactic microquasars, appearing at high luminosities.
description: 5 pages, 2 figures, accepted for publication in PASJ
Acroperus Baird 1843
Creators: name: Sinev, Artem Y.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Branchiopoda
Diplostraca
Acroperus

description: Acroperus Baird, 1843.
 Parthenogenetic female short description. Body oval, of variable height, head and valves with well-defined keel (Fig. 5A). Sculpture of valves as longitudinal lines. Posteroventral angle of valves with several small, closely spaced denticles (Fig. 5B). Rostrum triangular in lateral view, with pointed apex. Three main head pores with narrow connection between them, located at widened part of head keel. Lateral head pores minute. Labral keel of moderate width, with rounded apex, without clusters of setulae on posterior margin.
Postabdomen long and narrow (Fig. 5C), with parallel margins and prominent, broadly rounded distal angle, length about 4 heights. Preanal angle weakly defined, postanal angle not defined. Postanal denticles very small, in clusters. Postanal lateral groups of setulae long, in distalmost groups length of setulae exceed the width of base of postabdominal claw. Postabdominal claw long, almost straight, with short basal spine. A prominent spine located at middle of claw.
Antennule with a single lateral aesthetasc, this and one of terminal aesthetascs much longer than others. Antennal seta without basal peg. Antenna (Fig. 5D –E) with thin seta on basal segment of endopodite. Spine on basal segment of exopodite about 1/34 length of middle segment. Spines on apical segments about 1/3 length of apical segments. IDL of limb I with three setae, seta 1 well-developed, seta 2–3 thin, armed with thin setulae.
 Taxonomic notes. All early records of Acroperus from the region were attributed to Palearctic Acroperus harpae (see Korovchinsky 2013), but these populations were never studied in detail. S tudied specimens from North-East Thailand have morphology similar to that of recently described from Afrotropical species Acroperus africanus Neretina & Kotov, 2016, but at the moment presence of of A. harpae in the region cannot be excluded.
 These two species can be clearly differentiated by the morphology of apical setae of antenna endopodite. Acroperus is rare in South-East Asia, its populations are found in lakes, associated with vegetation. Idris (1983) did not provide description of antenna for Acroperus harpae, and it is impossible to verify his identification. In book of Maiphae (2014) drawing of Acroperus harpae belongs to male of Disparalona hamata, and drawings of postabdomen and and posteroventral corner of valves, to Camptocercus vietnamnsis Thanh, 1980.
description: Published as part of Sinev, Artem Y., 2016, Key for identification of Cladocera of the subfamily Aloninae (Anomopoda: Chydoridae) from South-East Asia, pp. 451-486 in Zootaxa 4200 (4) on pages 453-457, DOI: 10.11646/zootaxa.4200.4.1, http://zenodo.org/record/191528
Instabilities in magnetized spherical Couette flow
Creators: name: Gissinger, Christophe
name: Ji, Hantao
name: Goodman, Jeremy
Publisher: name: arXiv
Year: 2011
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report 3D numerical simulations of the flow of an electrically conducting fluid in a spherical shell when a magnetic field is applied. Different spherical Couette configurations are investigated, by varying the rotation ratio between the inner and the outer sphere, the geometry of the imposed field, and the magnetic boundary conditions on the inner sphere. Either a Stewartson layer or a Shercliff layer, accompanied by a radial jet, can be generated depending on the rotation speeds and the magnetic field strength, and various non-axisymmetric destabilizations of the flow are observed. We show that instabilities arising from the presence of boundaries present striking similarities with the magnetorotational instability (MRI). To this end, we compare our numerical results to experimental observations of the Maryland experiment, who claimed to observe MRI in a similar setup.
description: 11 pages, 12 figures
Periodic wave packet reconstruction in truncated tight-binding lattices
Creators: name: Longhi, Stefano
Publisher: name: arXiv
Year: 2010
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: A class of truncated tight-binding Hermitian and non-Hermitian lattices with commensurate energy levels, showing periodic reconstruction of the wave packet, is presented. Examples include exact Bloch oscillations on a finite lattice, periodic wave packet dynamics in non-Hermtian lattices with a complex linear site-energy gradient, and self-imaging in lattices with commensurate energy levels quadratically-varying with the quantum number.
Dynamics of stringy congruence in early universe
Creators: name: Cho, Yong Seung
name: Hong, Soon-Tae
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We studied the singularity of the geodesic surface congruence for timelike and null strings using the expansion of the universe in the string theory. We had Raychaudhuri type equation for the expansion. Assuming the stringy strong energy condition and initial convergence, we induced the existence of singularity and got the same inequality equation of the string strong energy condition for both timelike and null stringy congruence. In this paper we want to study the twist and shear aspects of the stingy geodesic surface congruence. Under some natural conditions we derive the equations of the twist and the shear in terms of the expansion of the universe. In appendix we investigate the geodesic surface congruence of the null strings.
description: 11 pages
Non-analyticity of the groud state energy of the Hamiltonian for Hydrogen atom in non-relativistic QED
Creators: name: Barbaroux, Jean-Marie
name: Vugalter, Semjon
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81Q10

description: We derive the ground state energy up to the fourth order in the fine structure constant $α$ for the translation invariant Pauli-Fierz Hamiltonian for a spinless electron coupled to the quantized radiation field. As a consequence, we obtain the non-analyticity of the ground state energy of the Pauli-Fierz operator for a single particle in the Coulomb field of a nucleus.
Axion term in topological insulators with broken time reversal and parity
Creators: name: Reis, Itamar
Publisher: name: University of British Columbia
Year: 2014

description: The main subject of this work is the axion term in the effective electromagnetic action of topological insulators, which is responsible for the special electromagnetic properties of these materials. The axion term is characterized by a parameter θ, which can only take the values of 0, for regular insulators, or π, for topological insulators, respecting at least one of the time reversal or parity symmetries. A non zero axion term leads to a variety of measurable phenomena, generally referred to as the magneto-electric effects. We focus our interest on the value the parameter θ takes for a topological insulator, when both time reversal and parity are broken. In this case θ no longer must be quantized to 0 or π. We use a lattice model for a topological insulator, and introduce a symmetry breaking term in the Hamiltonian. We numerically find the value of θ in this case using calculations of the magnitude of various magneto-electric effects. The results are compared to the theoretical prediction. We find that θ is no longer quantized when a specific symmetry breaking term is introduced.
Nutritional facts about Whole Grains
Creators: name: Shepard, Emma
name: Stout, Jamie
name: Maas, Mellisa
name: Adegoye, Grace
Publisher: name: Zenodo
Year: 2023
Subjects: Whole grain, nutrition, multigrain, immersive learning

description: Nutritional fact about whole grains is a nutritional information material that contains the health benefits of whole grain consumption, food sources, and examples. It also contains a recipe for whole wheat chocolate chip muffins and portion size equivalents to help the consumer make healthy food choices. This infographic and nutrition education material is part of project deliverables for the Immersive Learning Project at Ball State University which provides students with real-life community engagement and community nutrition training.
description: The infographic was designed by the senior Nutrition and Dietetic students of the Nutrition and Dietetic Program at the Department of Nutrition and Health Science, College of Health Science, Ball State University, Muncie, Indiana. All authors have equal contributions.
The effects of strong temperature anisotropy on the kinetic structure of collisionless slow shocks and reconnection exhausts. Part I: PIC simulations
Creators: name: Liu, Yi-Hsin
name: Drake, J. F.
name: Swisdak, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Space Physics (physics.space-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A 2-D Riemann problem is designed to study the development and dynamics of the slow shocks that are thought to form at the boundaries of reconnection exhausts. Simulations are carried out for varying ratios of normal magnetic field to the transverse upstream magnetic field (i.e., propagation angle with respect to the upstream magnetic field). When the angle is sufficiently oblique, the simulations reveal a large firehose-sense (P_parallel>P_perpendicular) temperature anisotropy in the downstream region, accompanied by a transition from a coplanar slow shock to a non-coplanar rotational mode. In the downstream region the firehose stability parameter epsilon=1-mu_0(P_parallel-P_perpendicular)/ B^2 tends to lock in to 0.25. This balance arises from the competition between counterstreaming ions, which drives epsilon down, and the scattering due to ion inertial scale waves, which are driven unstable by the downstream rotational wave. At very oblique propagating angles, 2-D turbulence also develops in the downstream region.
description: 13 pages, 10 figures
Bayesian Sparsity-Path-Analysis of Genetic Association Signal using Generalized t Priors
Creators: name: Lee, Anthony
name: Caron, Francois
name: Doucet, Arnaud
name: Holmes, Chris
Publisher: name: arXiv
Year: 2011
Subjects: subject: Applications (stat.AP)
subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: We explore the use of generalized t priors on regression coefficients to help understand the nature of association signal within "hit regions" of genome-wide association studies. The particular generalized t distribution we adopt is a Student distribution on the absolute value of its argument. For low degrees of freedom we show that the generalized t exhibits 'sparsity-prior' properties with some attractive features over other common forms of sparse priors and includes the well known double-exponential distribution as the degrees of freedom tends to infinity. We pay particular attention to graphical representations of posterior statistics obtained from sparsity-path-analysis (SPA) where we sweep over the setting of the scale (shrinkage / precision) parameter in the prior to explore the space of posterior models obtained over a range of complexities, from very sparse models with all coefficient distributions heavily concentrated around zero, to models with diffuse priors and coefficients distributed around their maximum likelihood estimates. The SPA plots are akin to LASSO plots of maximum a posteriori (MAP) estimates but they characterise the complete marginal posterior distributions of the coefficients plotted as a function of the precision of the prior. Generating posterior distributions over a range of prior precisions is computationally challenging but naturally amenable to sequential Monte Carlo (SMC) algorithms indexed on the scale parameter. We show how SMC simulation on graphic-processing-units (GPUs) provides very efficient inference for SPA. We also present a scale-mixture representation of the generalized t prior that leads to an EM algorithm to obtain MAP estimates should only these be required.