cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Universality in s-wave and higher partial wave Feshbach resonances: an illustration with a single atom near two scattering centers
Creators: name: Zhu, Shangguo
name: Tan, Shina
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: It is well-known that cold atoms near s-wave Feshbach resonances have universal properties that are insensitive to the short-range details of the interaction. What is less known is that atoms near higher partial wave Feshbach resonances also have remarkable universal properties. We illustrate this with a single atom interacting resonantly with two fixed static centers. At a Feshbach resonance point with orbital angular momentum $L\ge1$, we find $2L+1$ shallow bound states whose energies behave like $1/R^{2L+1}$ when the distance $R$ between the two centers is large. We then compute corrections to the binding energies due to other parameters in the effective range expansions. For completeness we also compute the binding energies near s-wave Feshbach resonances, taking into account the corrections. Afterwards we turn to the bound states at large but finite scattering volumes. For p-wave and higher partial wave resonances, we derive a simple formula for the energies in terms of a parameter called "proximity parameter". These results are applicable to a free atom interacting resonantly with two atoms that are localized to two lattice sites of an optical lattice, and to one light atom interacting with two heavy ones in free space. Modifications of the low energy physics due to the long range Van der Waals potential are also discussed.
description: 11 pages, 2 figures
Nonlinear localized modes in PT-symmetric optical media with competing gain and loss
Creators: name: Midya, Bikashkali
name: Roychoudhury, Rajkumar
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The existence and stability of the nonlinear spatial localized modes are investigated in parity-time symmetric optical media characterized by a generic complex hyperbolic refractive index distribution with competing gain and loss profile. The exact analytical expressions of the localized modes are found for all values of the competing parameter and in the presence of both the self-focusing and self-defocusing Kerr nonlinearity. The effect of competing gain/loss profile on the stability structure of these localized modes are discussed with the help of linear stability analysis followed by the direct numerical simulation of the governing equation. The spatial localized modes in two-dimensional geometry as well as the transverse power-flow density associated with these localized modes are also examined.
description: Final version
On the Jitter Radiation
Creators: name: Kelner, Stanislav R.
name: Aharonian, Felix A.
name: Khangulyan, Dmitry
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In a small scale turbulent medium, when the nonrelativistic Larmor radius $R_{\rm L}=mc^2/eB$ exceeds the correlation length $λ$ of the magnetic field, the magnetic bremsstrahlung of charged relativistic particles unavoidably proceeds in the so-called jitter radiation regime. The cooling timescale of parent particles is identical to the synchrotron cooling time, thus this radiation regime can be produced with very high efficiency in different astrophysical sources characterized by high turbulence. The jitter radiation has distinct spectral features shifted, compared to synchrotron radiation, towards high energies. This makes the jitter mechanism an attractive broad-band gamma-ray production channel which in highly magnetized and turbulent environments can compete or even dominate over other high energy radiation mechanisms. In this paper we present a novel study on spectral properties of the jitter radiation performed within the framework of perturbation theory. The derived general expression for the spectral power of radiation is presented in a compact and convenient for numerical calculations form.
description: 17 pages, 6 figures, submitted to ApJ
Characterization of inappetent sheep in a feedlot using radio-tracking technology
Creators: name: Barnes, AL
name: Wickham, SL
name: Admiraal, Ryan
name: Miller, DW
name: Collins, T
name: Stockman, C
name: Fleming, PA
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: Uncategorized

description: The feeding and drinking behaviours of sheep were monitored using RFID technology at a commercial pre-embarkation feedlot in Western Australia with the aim of characterizing feeding and drinking patterns of inappetent sheep that might allow them to be treated. Feeding and drinking behaviours of sheep were compared with their survival and change in body condition. Patterns of number of visits and the time spent at feed and water troughs were analyzed for a total of 8,206 sheep, representing four consignments that were monitored for a range of 6–31 d. Data for feeding and drinking behaviours were compared for the first 6 d. For animals that were alive at exit, 18.9% of sheep attended the feed trough for less than 0.25 h d−1 (15 min per day) on day 1; this decreased to only 2.4% of sheep by day 6. Of the sheep monitored, 0.93% died (n = 76); Salmonella spp. infection was the leading cause of death (n = 40; 52.6% of all deaths) across all months and was accompanied with inanition. There was marked variability in the average time spent at the feed trough for sheep that died eventually from salmonella/inanition (contrib-uting to the lack of statistical difference in time spent at feed trough between sheep dying from different causes; P = 0.056). Over half (55%) of the animals diagnosed with salmonella/inanition spent an average of less than 0.50 h d−1 (30 min per day) and 45% less than 0.25 h d−1 at the feed trough. There was a negative correlation (r) in time spent at the feed trough overtime for individual sheep that died from salmonella/inanition, indicating that these individuals went off their feed. This pattern was not evident for animals that died from other causes (significant difference in r values between five categories of cause of death; P = 0.040). Characterization of feeding behaviour of sheep that died from salmonella/inanition therefore appears to require more than simply monitoring daily intake. There was no difference in time spent at water troughs between sheep that died or were alive at exit (average 0.30 ± 0.23 h d−1). This study reveals that the patterns of feeding and drinking behaviours during pre-embarkation feedlotting do not readily allow identification of animals that warrant singling out for veterinary care or alternative feed arrangements. This result highlights the need for experienced stockmanship in handling these animals.
Using Modified Partitioning Around Medoids Clustering Technique in Mobile Network Planning
Creators: name: Ibrahim, Lamiaa Fattouh
name: Harbi, Manal Hamed Al
Publisher: name: arXiv
Year: 2013
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Every cellular network deployment requires planning and optimization in order to provide adequate coverage, capacity, and quality of service (QoS). Optimization mobile radio network planning is a very complex task, as many aspects must be taken into account. With the rapid development in mobile network we need effective network planning tool to satisfy the need of customers. However, deciding upon the optimum placement for the base stations (BS s) to achieve best services while reducing the cost is a complex task requiring vast computational resource. This paper introduces the spatial clustering to solve the Mobile Networking Planning problem. It addresses antenna placement problem or the cell planning problem, involves locating and configuring infrastructure for mobile networks by modified the original Partitioning Around Medoids PAM algorithm. M-PAM (Modified Partitioning Around Medoids) has been proposed to satisfy the requirements and constraints. PAM needs to specify number of clusters (k) before starting to search for the best locations of base stations. The M-PAM algorithm uses the radio network planning to determine k. We calculate for each cluster its coverage and capacity and determine if they satisfy the mobile requirements, if not we will increase (k) and reapply algorithms depending on two methods for clustering. Implementation of this algorithm to a real case study is presented. Experimental results and analysis indicate that the M-PAM algorithm when applying method two is effective in case of heavy load distribution, and leads to minimum number of base stations, which directly affected onto the cost of planning the network.
description: 10 pages, 15 figures
Maximizing the impact of mining investment in water infrastructure for local communities
Creators: name: Admiraal, Ryan
name: Sequeira, AR
name: McHenry, MP
name: Doepel, D
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: subject: 160499 Human Geography not elsewhere classified
subject: FOS: Social and economic geography

description: Mining activities requiring the development of new or expansion of existing water infrastructure provide an opportunity to benefit local communities with limited access to clean water. Mining companies have commonly assisted water service provision to communities as part of their mining concession or through corporate social responsibility programs. In addition to the water infrastructure provided to local communities, the accompanying capacity building, infrastructure governance, and the consultation process all have notable impacts not only on the sustainability of the water infrastructure, but also the level of benefit to communities. Using recent Australian Government funded water and sanitation interventions along the Nacala Economic Corridor (Mozambique) as a case study, we provide an examination of how mining companies can most effectively ensure the delivery of sustainable water infrastructure to local communities.
The evaporation rate of liquid droplets in a hot gas
Creators: name: Hartwig, Frederic William
Publisher: name: California Institute of Technology
Year: 1952
Subjects: Aeronautics

description: Calculations have been carried out in order to determine the rate of evaporation of a liquid droplet surrounded by hot gases.  The present study represents an extension of earlier work by Penner on evaporation rates for isothermal droplets.  Thus, allowance was made for temperature gradients withing the droplet (a) by considering a droplet composed of an isothermal core and an isothermal shell and (b) by utilizing the actual termperature profile in the droplet as established as the result of a heat balance between thermal conduction within the droplet, convective heat transfer to the droplet, and cooling produced by evaporation at the droplet surface.

The results obtained for the shell model of the evaporating droplet were found to be in satisfactory agreement with the known data for evaporations of isothermal droplets, independently of the thickness chosen for the isothermal shells.  On the other hand, the laborious conduction solution led to somewhat different results.  The origin of the detailed deviations is not clear at this time and requires additional study.
Experimental investigation of an arc heater
Creators: name: Renard, Marc L.
Publisher: name: California Institute of Technology
Year: 1962
Subjects: Aeronautics

description: An electric arc heater, intended to provide a steady flow of high stagnation temperature gas (up to 10,000°K) into a convergent-divergent nozzle, was designed at the GALCIT Hypersonic Laboratory.

Section 2 first gives a few preliminary calculations which have been made for the arc heater-nozzle combination, using argon, at stagnation pressures of 1 and 2 atm., and assuming equilibrium flow. In particular, the Mach number in the test section of a fixed nozzle will depend on the thermodynamic properties at the reservoir.

In the heater, the direct-current arc is axially constricted by a channel parallel to the gas flow. A description of the design and instrumentation is given in Sections 2 and 3.

For two series of experiments, using argon, the central electrode was either the cathode, as in the conventional arrangement, or the anode: both configurations were thoroughly investigated. Provided a sharp edge exists at the end of the flow constricting channel, the configuration with anode in the center was found to give, generally, a more stable functioning, with a voltage drop about twice as large, higher efficiency and thus higher average temperature for the same mass flow of gas, as compared to the case where the cathode is in the center. In the ranges of power (up to 13 Kw) and mass flow (up to 6.00 gr/sec) investigated, it was found that the best efficiency is obtained for a swirl close to the central electrode and large gas mass flows. When the anode is in the center, a long and narrow constricting channel leads to the optimal conditions. With the reversed polarities, the geometry of the downstream channel is not very important.

Finally, a tentative explanation of the results is given, emphasizing in particular that the "anode in the center" case corresponds to a "long" arc, and the "cathode in the center" to a "short" one with poorer transfer of energy from the arc to the gas.
Seifert conjecture in the even convex case
Creators: name: Liu, Chungen
name: Zhang, Duanzhi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 58E05, 70H05, 34C25

description: In this paper, we prove that there exist at least $n$ geometrically distinct brake orbits on every $C^2$ compact convex symmetric hypersurface $\Sg$ in $\R^{2n}$ satisfying the reversible condition $N\Sg=\Sg$ with $N=\diag (-I_n,I_n)$. As a consequence, we show that if the Hamiltonian function is convex and even, then Seifert conjecture of 1948 on the multiplicity of brake orbits holds for any positive integer $n$.
description: 46 pages. arXiv admin note: substantial text overlap with arXiv:1111.0722, arXiv:0908.0021
Modeling concurrency and selective mixing in heterosexual partnership networks with applications to sexually transmitted diseases
Creators: name: Admiraal, Ryan
name: Handcock, MS
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: subject: Statistics
subject: FOS: Mathematics
subject: 140399 Econometrics not elsewhere classified
subject: FOS: Economics and business

description: Network-based models for sexually transmitted disease transmission rely on initial partnership networks incorporating structures that may be related to risk of infection. In particular, initial networks should reflect the level of concurrency and attribute-based selective mixing observed in the population of interest. We consider momentary degree distributions as measures of concurrency and propensities for people of certain types to form partnerships with each other as a measure of attribute-based selective mixing. Estimation of momentary degree distributions and mixing patterns typically relies on cross-sectional survey data, and, in the context of heterosexual networks, we describe how this results in two sets of reports that need not be consistent with each other. The reported momentary degree distributions and mixing totals are related through a series of constraints, however. We provide a method to incorporate those in jointly estimating momentary degree distributions and mixing totals. We develop a method to simulate heterosexual networks consistent with these momentary degree distributions and mixing totals, applying it to data obtained from the National Longitudinal Study of Adolescent Health. We first use the momentary degree distributions and mixing totals as mean value parameters to estimate the natural parameters for an exponential-family random graph model and then use a Markov chain Monte Carlo algorithm to simulate person-level heterosexual partnership networks.
An investigation of the stresses and deflections of swept plates
Creators: name: Chandler, Ralph Stewart
name: Gilkeson, Fillmore Bolling
Publisher: name: California Institute of Technology
Year: 1949
Subjects: Aeronautics

description: The problem in this investigation was to determine the stress and
deflection patterns of a thick cantilever plate at various angles
of sweepback.

The plate was tested at angles of sweepback of zero, twenty,
forty, and sixty degrees under uniform shear load at the tip,
uniformly distributed load and torsional loading.

For all angles of sweep and for all types of loading the area
of critical stress is near the intersection of the root and trailing
edge.  Stresses near the leading edge at the root decreased rapidly
with increase in angle of sweep for all types of loading.  In the
outer portion of the plate near the trailing edge the stresses due
to the uniform shear and the uniformly distributed load did not vary
for angles of sweep up to forty degrees.  For the uniform shear and
the uniformly distributed loads for all angles of sweep the area in
which end effect is pronounced extends from the root to approximately
three quarters of a chord length outboard of a line perpendicular to
the axis of the plate through the trailing edge root.  In case of
uniform shear and uniformly distributed loads the deflections near
the edge at seventy-five per cent semi-span decreased with increase
in angle of sweep.  Deflections near the trailing edge under the
same loading conditions increased with increase in angle of sweep
for small angles and then decreased at the higher angles of sweep.
The maximum deflection due to torsional loading increased with
increase in angle of sweep.
การจัดการฐานข้อมูลสุขภาพด้วยการพัฒนาระบบสารสนเทศเพื่อการส่งเสริมสุขภาพของศูนย์วิทยาศาสตร์การกีฬา มหาวิทยาลัยการกีฬาแห่งชาติ
Creators: name: หยาดฝน  ทับทิมหิน
Publisher: name: คณะมนุษยศาสตร์และสังคมศาสตร์ มหาวิทยาลัยราชภัฏพระนครศรีอยุธยา
Year: 2022
Subjects: การจัดการฐานข้อมูลสุขภาพ
ระบบสารสนเทศ
การส่งเสริมสุขภาพ

description: วารสารวิชาการมนุษยศาสตร์และสังคมศาสตร์ มหาวิทยาลัยราชภัฏพระนครศรีอยุธยา, 10, 2, 1-27
Holographic Constraints on a Vector Boson
Creators: name: Kulaxizi, Manuela
name: Rahman, Rakibur
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that holography poses non-trivial restrictions on various couplings of an interacting field. For a vector boson in the AdS Reissner-Nordstrom background, the dual boundary theory is pathological unless its electromagnetic and gravitational multipole moments are constrained. Among others, a generic dipole moment afflicts the dual CFT with superluminal modes, whose remedy bounds the gyromagnetic ratio in a range around the natural value g=2. We discuss the CFT implications of our results, and argue that similar considerations can shed light on how massive higher-spin fields couple to electromagnetism and gravity.
description: minor modifications, typos corrected and references added, version to appear in JHEP
title: Стереометрия
Creators: name: ELS IPR BOOKS
Publisher: name: Таганрогский институт управления и экономики
Year: 2021

description: Учебно-методическое пособие предназначено для студентов первого курса сроком обучения 2 года 10 месяцев, изучающих дисциплину «Математика», по специальностям СПО 38.02.01 – «Экономика и бухгалтерский учет (по отраслям)», 38.02.07 – «Банковское дело», 40.02.01 – «Право и организация социального обеспечения». Содержит краткую теорию по разделу «Стереометрия», необходимую для выполнения домашних и индивидуальных заданий, теоретические вопросы, которые необходимо проработать при подготовке к практическим занятиям, образцы решения типовых задач, задания для самостоятельной работы, образцы контрольных работ. Материал пособия составлен в соответствии с требованиями ФГОС СПО.
Castable plastics in photoelastics stress analysis
Creators: name: Matzdorff, Roger E.
Publisher: name: California Institute of Technology
Year: 1950
Subjects: Aeronautics

description: An investigation was begun on the feasibility of utilizing castable, thermosetting plastics in experimental stress analysis by means of either photoelasticity or electrical strain gages imbedded in the plastic.

The first phase of the study was the development of a casting technique that would give a stress free casting suitable for photoelastic work. This was considerably complicated by the inherent shrinkage which occurs during the polymerization of the plastic. A good method was found for casting solid models, and a workable method was devised for casting hollow section models.

The second phase constituted the development and evaluation of the optimum physical properties of a resin known as Castolite. The results were encouraging with the exception that the strain creep was excessive. The rate of creep, however, is slow and it is possible to use the material for two dimensional photoelasticity with results comparable to those obtained from other photo-elastic materials. The desirable features are a very low optical creep, stress-strain and stress-fringe number curves that are linear for constant loading time, no time-edge stress effects, chemical stability under high temperatures, modulus of elasticity of 600,000 psi, and a fringe value of 175 psi per in-fringe in tension.

An additional feature is the ability to bond two or more cured plastic pieces together with the liquid plastic itself. The strength of the bonded area is equal to the rest of the structure.

Three dimensional frozen stress properties were not determined, but there is evidence that the resin would be suitable.
Chiral condensate in hadronic matter
Creators: name: Jankowski, J.
name: Blaschke, D.
name: Spalinski, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The finite temperature chiral condensate for 2+1 quark flavors is considered in the framework of the hadron resonance gas model. This requires some dynamical information, for which two models are employed: one based on the quark structure of hadrons combined with the Nambu-Jona-Lasinio approach to chiral symmetry breaking, and one originating from gauge/gravity duality. Using these insights, hadronic sigma terms are discussed in the context of recent first principles results following from lattice QCD and chiral perturbation theory. For the condensate, in generic agreement with lattice data it is found that chiral symmetry restoration in the strange quark sector takes place at higher temperatures than in the light quark sector. The importance of this result for a recently proposed dynamical model of hadronic freeze-out in heavy-ion collisions is outlined.
description: 13 pages, 11 figures, revised version with added text, figure and references
การประเมินโครงการศูนย์แยกกักตัวในชุมชน:กรณีการแพร่ระบาดโรคติดเชื้อไวรัสโคโรนา 2019 โรงเรียนบ้านห้วยหาน อำเภอเวียงแก่น จังหวัดเชียงราย
Creators: name: อดิศร  ภู่สาระ
Publisher: name: คณะมนุษยศาสตร์และสังคมศาสตร์ มหาวิทยาลัยราชภัฏพระนครศรีอยุธยา
Year: 2022
Subjects: การประเมินโครงการ
ศูนย์แยกกักตัวในชุมชน
โรคติดเชื้อไวรัสโคโรนา 2019

description: วารสารวิชาการมนุษยศาสตร์และสังคมศาสตร์ มหาวิทยาลัยราชภัฏพระนครศรีอยุธยา, 10, 2, 29-53
Non-global parameter estimation using local ensemble Kalman filtering
Creators: name: Bellsky, Thomas
name: Berwald, Jesse
name: Mitchell, Lewis
Publisher: name: arXiv
Year: 2013
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: 37N10, 37M05, 62-07, 62H12

description: We study parameter estimation for non-global parameters in a low-dimensional chaotic model using the local ensemble transform Kalman filter (LETKF). By modifying existing techniques for using observational data to estimate global parameters, we present a methodology whereby spatially-varying parameters can be estimated using observations only within a localized region of space. Taking a low-dimensional nonlinear chaotic conceptual model for atmospheric dynamics as our numerical testbed, we show that this parameter estimation methodology accurately estimates parameters which vary in both space and time, as well as parameters representing physics absent from the model.
Table S1: List of treehopper genera used in the experiment as baits. from Resource exchange and partner recognition mediate mutualistic interactions between prey and their would-be predators
Creators: name: Camacho, Luis F.
name: Avilés, Leticia
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour

description: Table S1. List of treehopper genera used in the experiment as baits. Treehoppers were classified based on the degree to which adults associate with ants. Mutualists are commonly found in large aggregations tended by ants (e.g., Erechtia, Anchistrotus, Anobilia); partial mutualists show some degree of association at some point of their life cycle (e.g. aggregations of teneral adults in Membracis or Enchenopa, or Stegaspis and Lycoderes individuals being close to ant-attended aggregations); non-mutualists do not associate as adults with ants [24].
Photochemistry in Terrestrial Exoplanet Atmospheres II: H2S and SO2 Photochemistry in Anoxic Atmospheres
Creators: name: Hu, Renyu
name: Seager, Sara
name: Bains, William
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Sulfur gases are common components in the volcanic and biological emission on Earth, and are expected to be important input gases for atmospheres on terrestrial exoplanets. We study the atmospheric composition and the spectra of terrestrial exoplanets with sulfur compounds (i.e., H2S and SO2) emitted from their surfaces. We use a comprehensive one-dimensional photochemistry model and radiative transfer model to investigate the sulfur chemistry in atmospheres ranging from reducing to oxidizing. The most important finding is that both H2S and SO2 are chemically short-lived in virtually all types of atmospheres on terrestrial exoplanets, based on models of H2, N2, and CO2 atmospheres. This implies that direct detection of surface sulfur emission is unlikely, as their surface emission rates need to be extremely high (>1000 times Earth's volcanic sulfur emission) for these gases to build up to a detectable level. We also find that sulfur compounds emitted from the surface lead to photochemical formation of elemental sulfur and sulfuric acid in the atmosphere, which would condense to form aerosols if saturated. For terrestrial exoplanets in the habitable zone of Sun-like stars or M stars, Earth-like sulfur emission rates result in optically thick haze composed of elemental sulfur in reducing H2-dominated atmospheres for a wide range of particle diameters (0.1-1 micron), which is assumed as a free parameter in our simulations. In oxidized atmospheres composed of N2 and CO2, optically thick haze, composed of elemental sulfur aerosols (S8) or sulfuric acid aerosols (H2SO4), will form if the surface sulfur emission is 2 orders of magnitude more than the volcanic sulfur emission of Earth. Although direct detection of H2S and SO2 by their spectral features is unlikely, their emission might be inferred by observing aerosol-related features in reflected light with future generation space telescopes.
description: Accepted for publication on the ApJ
Probing non-Abelian anyonic statistics with cold atoms in an optical lattice
Creators: name: Liu, Sheng
name: Xue, Zheng-Yuan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We propose a scheme to probe the non-Abelian statistics of the collective anyonic excitation in Kitaev's honeycomb model with cold atoms in an optical lattice. The generation of the anyonic excitation can be realized by simple rotating operation acting on an effective spin-1/2 system, which is encoded in the atomic hyperfine energy levels. The non-Abelian nature of the anyonic excitation is manifested by the braiding of four vortices, which leads to different operations on the subspace of degenerate ground states, and thus results in different final states. Here, by introducing an ancilla atom, the effective control over the lattice atoms can be realized and the final different states can also be imprinted on the ancilla and further distinguished by measurement.
description: v1, firstly submitted on Dec, 2012; v2: accepted version of JOSAB; v3: published version
Metamorphism at the Contact of the Cable Stock, Montana
Creators: name: Allingham, John Wing
Publisher: name: California Institute of Technology
Year: 1954
Subjects: subject: Geological and Planetary Sciences
subject: Geology
subject: FOS: Earth and related environmental sciences

description: A study of metamorphic rocks is integrated with the areal geology in the vicinity of the Cable stock, a granodiorite intrusive surrounded by Paleozoic carbonate rocks. Detailed geology of the zones of most intense metamorphism at the intrusive contact is described.

Isochemical thermal metamorphism was followed by metasomatic addition of material and accompanied by various stages of alteration. Silicic magnesian limestones altered to diopside-grossularite marble by the introduction of iron. The addition of iron, little magnesia, and alumina altered the marble to a diopside-grandite tactite. Additional iron was deposited as magnetite and accompanied widespread dedolomitization and alteration. Rocks near the intrusive contact were replaced by epidote, mica, and scapolite.

Areas of intense metamorphism occur at the granodiorite contact. Metamorphism is localized in areas of intense folding, fracturing, and shearing.

The basic border of the stock indicates assimilation of calcareous rocks by the granodiorite; the transfer of calcium across the contact resulted in the development of pargasite, diopside, and scapolite. Deformation of the sediments was preceded and, in part, accompanied by forceful intrusion of the granodiorite.
Part I. Analysis of a multi-stage axial compressor with high reaction blading. Part II. A design study of a multi-stage axial compressor with blading of high aspect ratio
Creators: name: Mauldin, James H.
Publisher: name: California Institute of Technology
Year: 1963
Subjects: Aeronautics

description: PART I:

An analysis of a multi-stage axial compressor with high reaction blading is carried out. The usual methods of linearizing the equations for flow through the compressor fail for this type of blading. A numerical-solution of the non-linear equations is worked through for off-design operation. Flow velocities through the first six stages are calculated for the off-design flow rates in order to insure that the flow does indeed come to a steady state repeating pattern. Entering flow angles for both rotor and stator are calculated for this repeating flow condition. The off-design incidence angles for the stators at low flow rates indicate a possible deterioration of efficiency.

PART II:

A method for designing blades of high aspect ratio in a multi-stage axial compressor is investigated. This method requires a calculation of the flow induced by all blade rows. The method is illustrated for the limiting condition of hub ratio equal to unity and then is carried out for the more realistic case of finite hub ratio.

An example of a blade design for a particular flow is carried out. The results are compared with those of a previous design for the same flow conditions but based on a theory applicable for blading of low aspect ratio.
Sobre "FOLKLORE, CUERPO Y GÉNESIS: DE LA TEORÍA A LA PRÁCTICA ETNOGRÁFICA "
Creators: name: Lucero, Yamila
Publisher: name: Zenodo
Year: 2023
Subjects: Folklore
cuerpo
narración oral

description: Folklore, cuerpo y génesis: de la teoría a la práctica etnográfica es una obra colectiva, recientemente publicada, que articula los estudios etnográficos y su génesis con un interés particular –como el título señala– en la corporalidad y en algunas de las manifestaciones folklóricas como la narración oral. El libro es una compilación realizada por María Inés Palleiro, prestigiosa investigadora en el campo de los estudios folklóricos, y por Ana Soledad Torres, con quien codirige el proyecto desde una perspectiva genética que privilegia "la génesis sobre la estructura" en términos de Grésillon (1994). El énfasis está entonces puesto en los procesos y los cambios que se suceden en los manuscritos, antes que en un análisis estructural de los objetos. Se trata de articular las expresiones folklóricas, dentro de su dimensión material original, con otras formas de interpretación. Por tanto, el estudio de cada uno de los autores consiste en una identificación de matrices folklóricas con manifestaciones estéticas de identidades y creencias sociales, en donde el cuerpo es abordado en su condición sígnica de expresión diferencial de cada cultura en contextos argentinos.
Time delays across saddles as a test of modified gravity
Creators: name: Magueijo, Joao
name: Mozaffari, Ali
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Modified gravity theories can produce strong signals in the vicinity of the saddles of the total gravitational potential. In a sub-class of these models this translates into diverging time-delays for echoes crossing the saddles. Such models arise from the possibility that gravity might be infrared divergent or confined, and if suitably designed they are very difficult to rule out. We show that Lunar Laser Ranging during an eclipse could probe the time-delay effect within meters of the saddle, thereby proving or excluding these models. Very Large Baseline Interferometry, instead, could target delays across the Jupiter-Sun saddle. Such experiments would shed light on the infrared behaviour of gravity and examine the puzzling possibility that there might be well-hidden regions of strong gravity and even singularities inside the solar system.
description: Version published in Classical and Quantum Gravity
Table S2. List of ant genera that interacted with baits across transects. from Resource exchange and partner recognition mediate mutualistic interactions between prey and their would-be predators
Creators: name: Camacho, Luis F.
name: Avilés, Leticia
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour

description: Table S2. List of ant genera that interacted with baits across transects. We classified ants as mutualists, occasional mutualists, and non-mutualists based on whether genera belonged to the dominant-arboreal, generalist, or predatorial guilds, respectively [25].
RESPONSE TO INTERVENTION: TIER 3 POLICY, INSTRUCTIONAL STRATEGIES, SUPPORT, AND IMPLEMENTATION
Creators: name: Bermudez, Bilma
Publisher: name: Zenodo
Year: 2022
Subjects: MTSS
RTI
Tier 3
foundational literacy
instructional strategies

description: Multi-tiered systems of support are essential for the success of all students. This qualitative study addressed the effectiveness of Response to Intervention implementation (RTI), instructional strategies, and progress monitoring to decrease the number of students placed in Tier 3 due to limitations in reading. The study aimed to identify best practices supporting Tier 3 students to mitigate moving them to special education. RTI schoolwide is vital for the early identification of meeting Tier 3 student needs. Study findings demonstrate that a strategic MTSS implementation plan, professional development, instructional strategies, support with challenges, and motivating students can help students academically. Implementing the RTI plan with fidelity and providing intervention staff support will yield a lower percentage of Tier 3 students. The goal is to decrease the opportunity gap for all students, including those in Title I schools. Ongoing communication, stakeholder involvement, and feedback will facilitate program success.
Process recording and digitisation requirements for the 21st century scientist - Presentation for ACS Spring 2023
Creators: name: Kanza, Samantha. P.
name: Knight, Nicola
Publisher: name: Zenodo
Year: 2023
Subjects: ELNs
digitisation
lab of the future
lab books
paper lab notebooks
barriers
requirements

description: Presentation given by Dr Samantha P. Kanza & Dr Nicola Knight on behalf of PSDI at ACS Spring 2023. Abstract: Making improvements to digitisation is a two stage problem, we need to encourage people to digitise more, and we need better systems to manage the plethora of electronic data once it makes its way into digital form. This presentation will consider both of these aspects by discussing the current state of digitisation of scientific research, including how things have changed (or not) since COVID-19, the barriers to digital research (and suggested mitigations), and the digitisation requirements of the physical sciences community. We will note the exemplars of domain based software and ELNs that we feel best address some of these needs, noting where the gaps are that still need to be filled.
Spherical collapse and halo mass function in f(R) theories
Creators: name: Kopp, Michael
name: Appleby, Stephen A.
name: Achitouv, Ixandra
name: Weller, Jochen
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We compute the critical density of collapse for spherically symmetric overdensities in a class of f(R) modified gravity models. For the first time we evolve the Einstein, scalar field and non-linear fluid equations, making the minimal simplifying assumptions that the metric potentials and scalar field remain quasi-static throughout the collapse. Initially evolving a top hat profile, we find that the density threshold for collapse depends significantly on the initial conditions imposed, specifically the choice of size and shape. By imposing `natural' initial conditions, we obtain a fitting function for the spherical collapse delta_c as a function of collapse redshift, mass of the overdensity and f_{R0}, the background scalar field value at z=0. By extending delta_c into drifting and diffusing barrier within the context of excursion set theory, we obtain a realistic mass function that might be used to confront this class of scalar-tensor models with observations of dark matter halos. The proposed analytic formula for the halo mass function was tested against Monte Carlo random walks for a wide class of moving barriers and can therefore be applied to other modified gravity theories.
description: 24 pages, 13 figures, corresponds to published version
An experimental investigation of hypersonic flow over blunt-nosed bodies at a Mach number 5.8
Creators: name: Fraasa, Donald G.
Publisher: name: California Institute of Technology
Year: 1957
Subjects: Aeronautics

description: NOTE:  Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document.

An experimental investigation to obtain schlieren photographs of the flow over several blunt-nosed bodies and to determine the surface static pressure distribution on certain of these models was conducted in the GALCIT hypersonic wind tunnel, leg no. 1, at a nominal Mach number of 5.8 and a free stream Reynolds number per inch of 2.22 x 10[...].

Schlieren photographs were made of the following blunt-nosed models, all with cylindrical afterbodies, at angles of yaw of 0, 4, and 8 degrees: a family of nine round-nosed bodies with nose radii of curvature varying from the radius of the afterbody cylinder (hemispherical nose) to infinity (flat nose), two concave-nosed bodies having nose radii of curvature equal to 0.8 and 1.6 times the afterbody diameter, and three flat-nosed cylinders with rounded shoulders whose radii of curvature were .083, .125, and .208 times the afterbody diameter.

Static pressure distributions at angles of yaw of 0, 4, and 8 degrees were determined for three of the blunt bodies: (1) the flatnosed cylinder with infinite nose radius of curvature, (2) the flatnosed cylinder with a rounded shoulder of radius equal to .208 of the afterbody diameter, and (3) a round-nosed cylinder with nose radius of curvature equal to 1.3 times the afterbody diameter.

The schlieren photographs were analyzed on a contour projector to measure shock standoff distances, to determine the sonic point on the shock, and to observe shock shape. Data derived from these studies and the pressure distributions are presented in graphical form. Comparisons are made between the experimental results and appropriate theoretical approximations for hypersonic flow.
Influence of Quantum and Thermal Noise on Spin-Torque-Driven Magnetization Switching
Creators: name: Wang, Yong
name: Zhou, Yan
name: Zhang, Fu-Chun
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We apply a recently developed quantum theory of spin transfer torque to study the effect of the quantum noise in spin transfer process on the magnetization switching in spin-torque-driven devices. The quantum noise induces considerable fluctuation of the switching time at zero temperature. By including the thermal noise, the temperature dependence of the expectation value and standard deviation of the switching time are obtained in the Monte Carlo simulations, and the results are fitted to an effective first passage model. We expect that the predictions here are observable in the single-shot measurement experiments.
description: 4 pages, 3 figures
Figure S2. Matrix of ant/treehopper genera interactions. from Resource exchange and partner recognition mediate mutualistic interactions between prey and their would-be predators
Creators: name: Camacho, Luis F.
name: Avilés, Leticia
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour

description: Figure S2. Matrix of ant/treehopper genera interactions and the resulting predation rate by ants during six consecutive 30-min intervals, for treehopper baits with and without added honey. Circle diameter represents the number of baits for each combination of genera. Genera were classified as non-mutualists (-), partially mutualist (+), and mutualist (++). Shaded interactions were considered for table 1 model C analysis, and correspond to ant genera that interacted with all treehopper mutualism types.
Cosmology with a spin
Creators: name: Magueijo, Joao
name: Zlosnik, T. G.
name: Kibble, T. W. B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using the chiral representation for spinors we present a particularly transparent way to generate the most general spinor dynamics in a theory where gravity is ruled by the Einstein-Cartan-Holst action. In such theories torsion need not vanish, but it can be re-interpreted as a 4-fermion self-interaction within a torsion-free theory. The self-interaction may or may not break parity invariance, and may contribute positively or negatively to the energy density, depending on the couplings considered. We then examine cosmological models ruled by a spinorial field within this theory. We find that while there are cases for which no significant cosmological novelties emerge, the self-interaction can also turn a mass potential into an upside-down Mexican hat potential. Then, as a general rule, the model leads to cosmologies with a bounce, for which there is a maximal energy density, and where the cosmic singularity has been removed. These solutions are stable, and range from the very simple to the very complex.
description: Version published in Physical Review D
Bound states in a hyperbolic asymmetric double-well
Creators: name: Hartmann, R. R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report a new class of hyperbolic asymmetric double-well whose bound state wavefunctions can be expressed in terms of confluent Heun functions. An analytic procedure is used to obtain the energy eigenvalues and the criterion for the potential to support bound states is discussed.
description: 7 pages, 4 figures
Engineering Ising-XY spin models in a triangular lattice via tunable artificial gauge fields
Creators: name: Struck, Julian
name: Weinberg, Malte
name: Ölschläger, Christoph
name: Windpassinger, Patrick
name: Simonet, Juliette
name: Sengstock, Klaus
name: Höppner, Robert
name: Hauke, Philipp
name: Eckardt, André
name: Lewenstein, Maciej
name: Mathey, Ludwig
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Emulation of gauge fields for ultracold atoms provides access to a class of exotic states arising in strong magnetic fields. Here we report on the experimental realisation of tunable staggered gauge fields in a periodically driven triangular lattice. For maximal staggered magnetic fluxes, the doubly degenerate superfluid ground state breaks both a discrete Z2 (Ising) symmetry and a continuous U(1) symmetry. By measuring an Ising order parameter, we observe a thermally driven phase transition from an ordered antiferromagnetic to an unordered paramagnetic state and textbook-like magnetisation curves. Both the experimental and theoretical analysis of the coherence properties of the ultracold gas demonstrate the strong influence of the Z2 symmetry onto the condensed phase.
Fast accurate computation of the fully nonlinear solitary surface gravity waves
Creators: name: Clamond, Didier
name: Dutykh, Denys
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Classical Physics (physics.class-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: In this short note, we present an easy to implement and fast algorithm for the computation of the steady solitary gravity wave solution of the free surface Euler equations in irrotational motion. First, the problem is reformulated in a fixed domain using the conformal mapping technique. Second, the problem is reduced to a single equation for the free surface. Third, this equation is solved using Petviashvili's iterations together with pseudo-spectral discretisation. This method has a super-linear complexity, since the most demanding operations can be performed using a FFT algorithm. Moreover, when this algorithm is combined with the multi-precision arithmetics, the results can be obtained to any arbitrary accuracy.
description: 8 pages, 4 figures, 22 references. Other authors papers can be downloaded at http://www.denys-dutykh.com/