cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Sobre "LA COMUNA MEXICANA"
Creators: name: Repetto, Ignacio
Publisher: name: Zenodo
Year: 2023
Subjects: comuna mexiacana
archivo
revolución mexicana

description: El autor de La comuna mexicana no acude a los trabajos de Foucault ni a las conceptualizaciones de Derrida, y es posible que la palabra "archivo" se encuentre mencionada contadas veces a lo largo del libro, pero, sin embargo, no resulta arriesgado decir que su intervención propone una lectura de corte arqueológico sobre dos series de archivos que pretende intersectar. La primera, minada de vacíos, corresponde a los archivos de los alzamientos populares en México, que atraviesan la historia del territorio, en cuyo recorrido se enlazan los levantamientos indígenas durante la conquista, la Revolución mexicana y las protestas ciudadanas vividas en los primeros años de la década del 2000; la segunda, apenas menos extensa, concierne al vasto acervo de publicaciones, escritos, cartas y apuntes reunidos bajo la firma de Marx, y al largo desfile de personas que lo estudiaron y editaron, tanto en Europa como en América Latina
The analysis of discontinuities in cylindrical tubes propagating sound waves
Creators: name: Miles, John W.
Publisher: name: California Institute of Technology
Year: 1944
Subjects: Aeronautical Engineering
Aeronautics

description: The effect of a plane discontinuity on a plane wave propagated in a cylindrical tube is calculated by variational methods. In carrying out the calculations a transmission line analogy is used and the effect of the discontinuity at a distance is represented by a capacitance placed at the discontinuity.

In section 1 the equations of motion for the propagation of a small disturbance in a cylindrical tube are established, culminating in the tyro-dimensional wave equation, while the solutions to the equations are discussed in section 2. These solutions constitute an infinite set of modes, in addition to the plane wave usually treated in the literature. In section 3 the analogy between propagation of sound and an electrical transmission line is established, and it is shown that each mode requires a separate transmission line. In section 4 it is shown that the effect of the higher modes excited by a plane discontinuity may be represented by a lumped capacitance, and this capacitance is given by a variational expression which gives a systematic method of calculation yielding an upper bound to the true answer. For the case of a window, a variational principle is produced inihich gives a lower bound to the true answer. In section B this method is applied to a window in a rectangular tube in some detail, in section 7 it is applied to a change of cross section in a rectangular tube, and in section 8 it is applied to windows and changes of cross section in circular tubes. In section 9 the reflection and transmission factors are calculated, and in section 10 the resonant frequency of certain types of resonators is calculated.

To the authors's knowledge this is the first rigorous treatment of the above problems with the exception of an earlier paper calculating the reflection due to a change of cross section in a circular tube.
A log-linear modelling approach to assessing the consistency of ego reports of dyadic outcomes with applications to fertility and sexual partnerships
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: 160399 Demography not elsewhere classified
subject: FOS: Sociology
subject: 140399 Econometrics not elsewhere classified
subject: FOS: Economics and business

description: Summary: We propose a log-linear model to assess the consistency of ego reports of dyadic outcomes. We do so specifically in the context where males and females report on shared events, and we demonstrate how inconsistencies can be assessed by using a log-linear model that estimates separate mixing totals for each set of reports. This modelling approach immediately allows us to determine where inconsistencies in reports occur. To demonstrate how our method can be easily implemented for survey data, we apply it to both the 1992 National Health and Social Life Survey and the 2002 National Survey of Family Growth. Our analysis identifies inconsistencies in male and female reports of concurrent partnerships and the number of biological children.
Ultrafast plasmonics using transparent conductive oxide hybrids in the epsilon near-zero regime
Creators: name: Traviss, Daniel
name: Bruck, Roman
name: Mills, Ben
name: Abb, Martina
name: Muskens, Otto L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The dielectric response of transparent conductive oxides near the bulk plasmon frequency is characterized by a refractive index less than vacuum. In analogy with x-ray optics, it is shown that this regime results in total external reflection and air-guiding of light. In addition, the strong reduction of the wavevector in the ITO below that of free space enables a new surface plasmon polariton mode which can be excited without requiring a prism or grating coupler. Ultrafast control of the surface plasmon polariton mode is achieved with a modulation amplitude reaching 20%.
description: 5 pages, 4 figures
Locally normal subgroups of simple locally compact groups
Creators: name: Caprace, Pierre-Emmanuel
name: Reid, Colin D.
name: Willis, George A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 22D05, 20E32, 20E15, 20E18, 37B05, 43A07

description: We announce various results concerning the structure of compactly generated simple locally compact groups. We introduce a local invariant, called the structure lattice, which consists of commensurability classes of compact subgroups with open normaliser, and show that its properties reflect the global structure of the ambient group.
description: 6 pages
Planet Research Data Commons public consultation
Creators: name: Levett, Kerry
Publisher: name: Zenodo
Year: 2022

description: The ARDC invited invite environmental researchers and decision makers to get involved in the consultations for the Planet Research Data Commons to help guide the development of the new digital research infrastructure. The Planet Research Data Commons will deliver shared, accessible data and digital research tools that will help researchers and decision makers tackle the big challenges facing our environment, which include adapting to climate change, saving threatened species, and reversing ecosystem deterioration. See the recording - https://youtu.be/DVAycwGOrw4.
Geology of portions of the Humphreys and Sylmar quadrangles
Creators: name: Smith, Raymond James
Publisher: name: California Institute of Technology
Year: 1948
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: The portions of the Sylmar and Humphreys Quadrangles
studied consist of Jurassic? "basement complex" and sediments of Pliocene age and younger. These are brought
together along the San Gabriel fault. The Tertiary sediments comprise the Mint Canyon formation, the Modelo
formation, the Pico formation, the Saugus formation, and
Quaternary terrace and alluvial material. These are
listed in order of decreasing age. All the contacts between the various sedimentary formations are unconformable.

The Miooene formations are highly folded and faulted, and a large vertical fault displaces upper miocene beds. The Pliocene and younger formations also are folded, but
to only a minor degree.

The abundance of shale in the Tertiary section makes the region one of numerous landslides. In addition, unusual erosive action and succession of units has resulted
in the carving out of a small-scale natural bridge.

There is no production of economic materials from the area at the present time, but the possibilities of petroleum development are now being given serious consideration.
Efficient sampling of fast and slow cosmological parameters
Creators: name: Lewis, Antony
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Physical parameters are often constrained from the data likelihoods using sampling methods. Changing some parameters can be much more computationally expensive (`slow') than changing other parameters (`fast parameters'). I describe a method for decorrelating fast and slow parameters so that parameter sampling in the full space becomes almost as efficient as sampling in the slow subspace when the covariance is well known and the distributions are simple. This gives a large reduction in computational cost when there are many fast parameters. The method can also be combined with a fast 'dragging' method proposed by Neal (2005) that can be more robust and efficient when parameters cannot be fully decorrelated a priori or have more complicated dependencies. I illustrate these methods for the case of cosmological parameter estimation using data likelihoods from the Planck satellite observations with dozens of fast nuisance parameters, and demonstrate a speed up by a factor of five or more. In more complicated cases, especially where the fast subspace is very fast but complex or highly correlated, the fast-slow sampling methods can in principle give arbitrarily large performance gains. The new samplers are implemented in the latest version of the publicly available CosmoMC code.
description: 11 pages, 4 figures; minor clarifications, additional references and brief disussion of alternative methods
Low root-to-root transmission of a tobamovirus, yellow tailflower mild mottle virus, and resilience of its virions
Creators: name: Koh, SH
name: Li, H
name: Sivasithamparam, K
name: Admiraal, Ryan
name: Jones, MGK
name: Wylie, SJ
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: 70399 Crop and Pasture Production not elsewhere classified
subject: FOS: Agriculture, forestry and fisheries
subject: Plant Biology

description: Tobamoviruses are serious pathogens because they have extremely stable virions, they are transmitted by contact, and they often induce severe disease in crops. Knowledge of the routes of transmission and resilience of tobamovirus virions is essential in understanding the epidemiology of this group of viruses. Here, an isolate of the tobamovirus yellow tailflower mild mottle virus (YTMMV) was used to examine root-to-root transmission in soil and in a hydroponic growth environment. Root-to-root transmission occurred rarely, and when it occurred plants did not exhibit systemic movement of the virus from the roots to the shoots over a 30-day period. The resilience of YTMMV virions was tested in dried leaf tissue over time periods from one hour to one year under temperatures ranging from −80 to 160 °C. Infectivity was maintained for at least a year when incubated at −80 or 22 °C, or at fluctuating ambient temperatures of 0.8 to 44.4 °C, but incubation under dry conditions at 160 °C for >4 days eliminated infectivity. Exposure of virions to 0.1 m sodium hydroxide or 20% w/v skimmed milk solution for 30 min, treatments recommended for tobamovirus inactivation, did not abolish infectivity of YTMMV.
Static post-Newtonian limits in non-projectable Hořava-Lifshitz gravity with an extra U(1) symmetry
Creators: name: Lin, Kai
name: Wang, Anzhong
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we study static post-Newtonian limits in non-projectable Hořava-Lifshitz gravity with an extra U(1) symmetry. After obtaining all static spherical solutions in the infrared, we apply them to the solar system tests, and obtain the Eddington-Robertson-Schiff parameters in terms of the coupling constants of the theory. These parameters are well consistent with observations for the physically viable coupling constants. In contrast to the projectable case, this consistence is achieved without taking the gauge field and Newtonian prepotential as part of the metric.
description: Version appeared in Phys. Rev. D87, 084041 (2013)
Dynamical Coulomb Blockade in an interacting 1D system coupled to an arbitrary environment
Creators: name: Souquet, J. -R.
name: Safi, I.
name: Simon, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the out-of-equilibrium transport in a Tomonaga-Luttinger liquid containing a weak or a tunneling barrier coupled to an arbitrary electromagnetic environment. This applies as well to a coherent one-channel non-interacting conductor with a transmission coefficient close to one or to zero. We derive formal expressions for the current and finite-frequency (FF) noise at arbitrary voltages, temperatures and frequency-dependent impedance $Z(ω)$ in the regimes of weak and strong backscattering. We show that these two regimes are no longer related by duality at finite frequency. We then carry explicit computations of the nonlinear conductance and FF noise when $Z(ω)$ describes an harmonic oscillator such as a LC circuit or a cavity.
description: 13 pages, 9 figures
Work in Progress: AI-Powered Engineering-Bridging Theory and Practice
Creators: name: Levy, Oz
name: Dikman, Ilya
name: Levy, Natan
name: Winokur, Michael
Publisher: name: arXiv
Year: 2025
Subjects: subject: Systems and Control (eess.SY)
subject: Software Engineering (cs.SE)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: This paper explores how generative AI can help automate and improve key steps in systems engineering. It examines AI's ability to analyze system requirements based on INCOSE's "good requirement" criteria, identifying well-formed and poorly written requirements. The AI does not just classify requirements but also explains why some do not meet the standards. By comparing AI assessments with those of experienced engineers, the study evaluates the accuracy and reliability of AI in identifying quality issues. Additionally, it explores AI's ability to classify functional and non-functional requirements and generate test specifications based on these classifications. Through both quantitative and qualitative analysis, the research aims to assess AI's potential to streamline engineering processes and improve learning outcomes. It also highlights the challenges and limitations of AI, ensuring its safe and ethical use in professional and academic settings.
description: 4 pages, 2 figures,
Optimum thrust programming for low thrust devices
Creators: name: Smithey, William John Henry
Publisher: name: California Institute of Technology
Year: 1964
Subjects: Aeronautics

description: The use of low thrust devices with continuous and discontinuous thrust programs is investigated to determine whether or not a discontinuous thrust program will provide a greater payload and structure mass fraction, where the program must impart a specified amount of energy to the satellite in a specified total time, starting from a circular parking orbit. A discontinuous thrust program is developed, based on the elliptic orbit, using a perturbation analysis, and a series solution is obtained which permits investigation of this program up to angles of one radian either side of the perigee of the elliptic orbit. These results are compared with a continuous thrust program which gave a spiral orbit. Under certain conditions, where storage batteries must be carried as part of the payload but are available for use during the thrust program, the discontinuous thrust program is found to provide a greater payload and structure mass fraction. Further investigation at angles greater than one radian either side of perigee appears to be warranted.
Migration of vacancies to stress centers
Creators: name: Vermilya, Jay J.
Publisher: name: California Institute of Technology
Year: 1956
Subjects: Aeronautics

description: The activation energy for motion of a vacancy in an edge dislocation width is considered by a modification of the method of Bartlett and Dienes. The results indicate an expected trend of motion toward the center of the width in the compressed half with a decreasing activation energy from edge to center. On the basis of the model used there is little tendency to form nonequilibrium vacancy doublets by this mechanism.
Fractional Quantum Hall Physics in Topological Flat Bands
Creators: name: Parameswaran, S. A.
name: Roy, R.
name: Sondhi, S. L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a pedagogical review of the physics of fractional Chern insulators with a particular focus on the connection to the fractional quantum Hall effect. While the latter conventionally arises in semiconductor heterostructures at low temperatures and in high magnetic fields, interacting Chern insulators at fractional band filling may host phases with the same topological properties, but stabilized at the lattice scale, potentially leading to high-temperature topological order. We discuss the construction of topological flat band models, provide a survey of numerical results, and establish the connection between the Chern band and the continuum Landau problem. We then briefly summarize various aspects of Chern band physics that have no natural continuum analogs, before turning to a discussion of possible experimental realizations. We close with a survey of future directions and open problems, as well as a discussion of extensions of these ideas to higher dimensions and to other topological phases.
description: 30 pages, 4 figures; review submitted to topical issue of Comptes Rendus Physique devoted to topological insulators and Dirac matter. Pre-publication version; comments are invited
Assimilation Messages
Creators: name: Pascual, Nicole
name: Kirby, Teri
name: Begeny, Christopher
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: This study was pre-registered before participant data collection began. The registration includes two documents: the pre-registration document dated Nov 28, 2022 containing methodological details and the full questionnaire (dated Nov 28, 2022).
A restudy of existing graphical methods of interpreting magnetic data and their application to interpreting the results of magnetic surveys across the Los Angeles Basin
Creators: name: Quigley, Milner Darwin
Publisher: name: California Institute of Technology
Year: 1950
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: This thesis discusses the historical development of the methods of magnetic interpretation and explains why greater emphasis should be placed on graphical methods. Many graphical methods have been published but only one of them, Pirson's Polar Diagram method, has widespread application to all magnetic interpretive problems.

The Polar Diagram method is especially applicable to magnetic problems of a regional nature where the disturbing body is very irregular in shape and cannot be approximated by a second order geometric form. A disturbing body of this description is present in the Los Angeles Basin.

Previous attempts to match the observed magnetic anomaly curves across the Los Angeles Basin with the theoretical calculated curves by numerical methods have failed to obtain a close comparison. The Polar Diagram method makes it possible to obtain a superposition of the calculated curves over the observed curves except in the vicinity of the Palos Verde Hills. The superposition was obtained only after there was complete agreement between the existing geologic, gravity; and seismic information along the profile across the Basin.

The Polar Diagram method is one of the quickest and most straight forward of the graphical methods to use. It is applicable to most magnetic problems where the direction of the induced magnetism is parallel to the direction of the remanent magnetism.
Some potential problems arising in the theory of axial turbomachines
Creators: name: Mandelbrot, Benoit B.
Publisher: name: California Institute of Technology
Year: 1949
Subjects: Aeronautics

description: Some potential problems raised by the trailing-vortex theory of axial turbomachines are solved in the cases of cylindrical semi-infinite and infinite helicoidal vortices and of trailing vortices in a cone.  The analysis is carried out for the cylindrical doubly infinite case and the dynamical problems are set up.

The results are in a form where further applications to the physical problems may be undertaken and actual computations worked out.

It is hoped that this work will be completed in the future.
Time Dependence of Particle Creation from Accelerating Mirrors
Creators: name: Good, Michael R. R.
name: Anderson, Paul R.
name: Evans, Charles R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Particle production due to a quantized, massless, minimally coupled scalar field in two-dimensional flat spacetime with an accelerating mirror is investigated, with a focus on the time dependence of the process. We analyze first the classes of trajectories previously investigated by Carlitz and Willey and by Walker and Davies. We then analyze four new classes of trajectories, all of which can be expressed analytically and for which several ancillary properties can be derived analytically. The time dependence is investigated through the use of wave packets for the modes of the quantized field that are in the out vacuum state. It is shown for most of the trajectories studied that good time resolution of the particle production process can be obtained.
description: 21 pages, 5 figures
Electrodiffusive model for astrocytic and neuronal ion concentration dynamics
Creators: name: Halnes, Geir
name: Østby, Ivar
name: Pettersen, Klas H.
name: Omholt, Stig W.
name: Einevoll, Gaute T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cell Behavior (q-bio.CB)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Biological sciences
subject: 92C05

description: Electrical neural signalling typically takes place at the time-scale of milliseconds, and is typically modeled using the cable equation. This is a good approximation for processes when ionic concentrations vary little during the time course of a simulation. During periods of intense neural signalling, however, the local extracellular K+ concentration may increase by several millimolars. Clearance of excess K+ likely depends partly on diffusion in the extracellular space, partly on local uptake by- and intracellular transport within astrocytes. This process takes place at the time scale of seconds, and can not be modeled accurately without accounting for the spatiotemporal variations in ion concentrations. The work presented here consists of two main parts: First, we developed a general electrodiffusive formalism for modeling ion concentration dynamics in a one-dimensional geometry, including both an intra- and extracellular domain. The formalism was based on the Nernst-Planck equations. It ensures (i) consistency between the membrane potential and ion concentrations, (ii) global particle/charge conservation, and (iii) accounts for diffusion and concentration dependent variations in resistivities. Second, we applied the formalism to model how astrocytes exchange ions with the ECS, and identified the key astrocytic mechanisms involved in K+ removal from high concentration regions. We found that a local increase in extracellular K\textsuperscript{+} evoked a local depolarization of the astrocyte membrane, which at the same time (i) increased the local astrocytic uptake of K\textsuperscript{+}, (ii) suppressed extracellular transport of K+, (iii) increased transport of K+ within astrocytes, and (iv) facilitated astrocytic relase of K+ in extracellular low concentration regions. In summary, these mechanisms seem optimal for shielding the extracellular space from excess K+.
description: 19 pages, 5 figures, 1 table (Equations 37 & 38 and the two first equations in Figure 2 were corrected May 30th 2013)
Are tourism and conservation compatible for ‘island tame’ species?
Creators: name: Worrell, T
name: Admiraal, Ryan
name: Bateman, PW
name: Fleming, PA
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: Uncategorized

description: Islands play an important conservation role due to high rates of speciation as well as providing a predator-free refuge environment for species that are vulnerable to terrestrial predation on the mainland. Many animals show marked ‘island tameness’ on predator-free islands, reducing costly escape responses in the absence of predation threat. Island tameness also translates to altered responses toward humans, making many island species attractive for wildlife tourism. We explored temporal and spatial differences in behavioral responses in the Rottnest Island quokka Setonix brachyurus. This marsupial is an excellent species to test for the effects of ecotourism, as well as of being conservation significance (IUCN-listed as vulnerable). Comparing escape responses for n = 339 individuals in high tourism and low tourism seasons, quokkas at tourism sites allowed a person to approach closer before moving away compared with non-tourisms sites, and two-thirds of individuals around tourism sites allowed a person to approach within 1 m (compared with 14% of individuals at non-tourism sites). For n = 67 ad hoc interactions with tourists, quokkas would only move away from an interaction with a tourist when the tourist group was noisy or there was an attempt to touch the animal. Time budgets (n = 379 individuals) showed that quokkas spent more time in group behavior and locomotion, but less in vigilance and feeding for tourism sites compared with non-tourism sites. Understanding the impact of ecotourism on animal behavior will help to frame conservation management actions to ensure persistence of threatened wildlife species. We propose two models describing animal responses toward ecotourism: spatial separation according to animal temperament or temporal adjustment due to learned habituation. These models are not mutually exclusive and we suggest that both spatial separation and habitation are likely evident for Rottnest quokkas. We discuss the implications of these results for protection of animals on the island as well as for species conservation.
Demonstration of Angle Dependent Casimir Force Between Corrugations
Creators: name: Banishev, A. A.
name: Wagner, J.
name: Emig, T.
name: Zandi, R.
name: Mohideen, U.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences
subject: 81T28

description: The normal Casimir force between a sinusoidally corrugated gold coated plate and a sphere was measured at various angles between the corrugations using an atomic force microscope. A strong dependence on the orientation angle of the corrugation is found. The measured forces were found to deviate from the proximity force approximation and are in agreement with the theory based on the gradient expansion including correlation effects of geometry and material properties. We analyze the role of temperature. The obtained results open new opportunities for control of the Casimir effect in micromechanical systems.
description: 13 pages, 3 figures, Submitted to Physical Review Letters (November 7, 2012)
Benchmark Tests for Markov Chain Monte Carlo Fitting of Exoplanet Eclipse Observations
Creators: name: Rogers, Justin C.
name: Lopez-Morales, Mercedes
name: Apai, Daniel
name: Adams, Elisabeth
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Ground-based observations of exoplanet eclipses provide important clues to the planets' atmospheric physics, yet systematics in light curve analyses are not fully understood. It is unknown if measurements suggesting near-infrared flux densities brighter than models predict are real, or artifacts of the analysis processes. We created a large suite of model light curves, using both synthetic and real noise, and tested the common process of light curve modeling and parameter optimization with a Markov Chain Monte Carlo (MCMC) algorithm. With synthetic white-noise models, we find that input eclipse signals are generally recovered within 10% accuracy for eclipse depths greater than the noise amplitude, and to smaller depths for higher sampling rates and longer baselines. Red-noise models see greater discrepancies between input and measured eclipse signals, often biased in one direction. Finally, we find that in real data, systematic biases result even with a complex model to account for trends, and significant false eclipse signals may appear in a non-Gaussian distribution. To quantify the bias and validate an eclipse measurement, we compare both the planet-hosting star and several of its neighbors to a separately-chosen control sample of field stars. Re-examining the Rogers et al. (2009) Ks-band measurement of CoRoT-1b finds an eclipse $3190^{+370}_{-440}$ ppm deep centered at $ϕ_{me}$=$0.50418^{+0.00197}_{-0.00203}$. Finally, we provide and recommend the use of selected datasets we generated as a benchmark test for eclipse modeling and analysis routines, and propose criteria to verify eclipse detections.
description: 33 pages, 11 tables, 9 figures, accepted to ApJ
Universal prohibited zones in the coordinate space of few-body systems
Creators: name: Bao, Chengguang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In some special zones of the high-dimensional coordinate space of few-body systems with identical particles, the operation of an element (or a product of elements) of the symmetry groups of the Hamiltonian on a quantum state might be equivalent to the operation of another element. Making use of the matrix representations of the groups, the equivalence leads to a set of homogeneous linear equations imposing on the wave functions. When the matrix of these equations is non-degenerate, the wave functions will appear as nodal surfaces in these zones. In this case, these zones are prohibited. In this paper, tightly bound 4-boson systems with three types of interaction have been studied analytically and numerically. The existence of the universal prohibited zones has been revealed, and their decisive effect on the structures of the eigenstates is demonstrated.
description: 19 pages, 9 figures
Hypersonic flow over an elliptic cone : theory and experiment
Creators: name: Chapkis, Robert L.
Publisher: name: California Institute of Technology
Year: 1959
Subjects: Aeronautics

description: By applying hypersonic approximations to Ferri's linearized characteristics method simple results were obtained for the shock shape and surface pressure distribution for an unyawed conical body of arbitrary cross-section.  Calculations were carried out for an elliptic cone having a ratio of major to minor axis of 2:1, and a semi-vertex angle of about 12° in the meridian plane containing the major axis. An experimental investigation of the flow over this body conducted at a Mach number of 5.8 in the GALCIT hypersonic wind tunnel showed that the surface pressure distribution at zero angle of attack agreed quite closely with the theoretical prediction.  On the other hand the simple Newtonian approximation predicts pressures that are too low.

Surface pressure distributions and schlieren photographs of the shock shape were also obtained at angles of attack up to 14° at zero yaw, and at angles of yaw up to 10°, at zero pitch.  At the higher angles of attack the Newtonian approximation for the surface pressures is quite accurate.
ELECTRONIC SUPPLEMENTARY MATERIAL from Conserved role of the urotensin II receptor 4 signalling pathway to control body straightness in a tetrapod
Creators: name: Alejevski, Faredin
name: Leemans, Michelle
name: Gaillard, Anne-Laure
name: Leistenschneider, David
name: de Flori, Céline
name: Bougerol, Marion
name: Le Mével, Sébastien
name: Herrel, Anthony
name: Fini, Jean-Baptiste
name: Pézeron, Guillaume
name: Tostivint, Hervé
Publisher: name: The Royal Society
Year: 2021
Subjects: Molecular Biology
Neuroscience
Developmental Biology

description: Urp1 and Urp2 are two neuropeptides of the urotensin II family identified in teleost fish and mainly expressed in cerebrospinal fluid (CSF)-contacting neurons. It has been recently proposed that Urp1 and Urp2 are required for correct axis formation and maintenance. Their action is thought to be mediated by the receptor Uts2r3, which is specifically expressed in dorsal somites. In support of this view, it has been demonstrated that the loss of uts2r3 results in severe scoliosis in adult zebrafish. In the present study, we report for the first time the occurrence of urp2, but not of urp1, in two tetrapod species of the Xenopus genus. In X. laevis, we show that urp2 mRNA-containing cells are CSF-contacting neurons. Furthermore, we identified utr4, the X. laevis counterparts of zebrafish uts2r3, and we demonstrate that, as in zebrafish, it is expressed in the dorsal somatic musculature. Finally, we reveal that, in X. laevis, the disruption of utr4 results in an abnormal curvature of the antero-posterior axis of the tadpoles. Taken together, our results suggest that the role of the Utr4 signalling pathway in the control of body straightness is an ancestral feature of bony vertebrates and not just a peculiarity of ray-finned fishes.
Superfluid phases of ultracold Fermi gases on a checkerboard superlattice
Creators: name: Iskin, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We analyze the ground-state phase diagram of two-component Fermi gases loaded into a two-dimensional checkerboard superlattice, i.e. a double-well optical lattice, potential within the BCS mean-field theory. We show that, by coupling the two s-wave sublattice superfluid order parameters, a checkerboard potential gives rise to a Hamiltonian that has the form of a two-band superfluidity with three (two intraband and an interband) nonlocal order parameters. We study the evolution of these order parameters as a function of particle filling, interaction strength and checkerboard potential, and find that the system always prefers the 0-phase solutions, i.e. the phase difference between sublattice order parameters is 0, but never the $π$-phase one. In addition, we find that the ground-state of the system undergo a superfluid-normal quantum phase transition at half fillings beyond a critical checkerboard potential $C$, the threshold of which is precisely determined by the magnitude of the order parameter at $C = 0$, and that the normal state rapidly turns into a checkerboard insulator as $C$ increases.
description: 6 pages with 3 figures
A method of performance analysis for sailing vessels
Creators: name: Denison, Frank G.
Publisher: name: California Institute of Technology
Year: 1944
Subjects: Aeronautical Engineering
Aeronautics

description: A general method for calculating the performance of all types of wind driven vessels has been developed. The method is of such a nature that it may be used, without specific experimental assistance, as a qualitative guide in preliminary design. To this same procedure, data from a few simple tests of the model in question may be applied to obtain good quantitative performance information.

As a result, existing yacht model testing procedure {Reference (4)} can be considerably simplified while at the same time obtaining information of much broader applicability.

The use of the principles of this method, if not the letter, should tend to rationalize the arbitrary and extremely restrictive handicapping rules for ocean racing now in existence.

Further, the owner, in possession of a performance analysis of his vessel, can be guided in his choice of course and sail setting as these are fundamental parameters of the general performance equation. The optimum sail setting for any wind speed and boat direction is of a necessity obtained in the process of the solution of this equation.

The method provides several rather surprising general conclusions. It is indicated that angle of heel, contrary to Reference (4) is not a fundamental variable, and therefore stability only enters the picture in so far as the designer has a "gentlemen's agreement" not to provide more sail than will heel the vessel to a certain angle in a given wind. It is found that only draft is a monotonic parameter in performance; all other form and sail variables exhibit optimums, some perhaps outside of the practical range.

Also, it is found from the experimental data of Reference (5) that yacht underbodies, despite their extremely low aspect ratio, exhibit a polar of lateral force and induced resistance with a character in agreement with the simple Prandtl theory. The interference effect of the surface, however, is found to be at variance with the result obtained from a lifting line vortex arranged to satisfy the water boundary condition.

It is found that the usual triangular yacht sail does not have as bad a downwash distribution as one might first suspect on considering the plan form and twist. The presence of the water surface has the effect of providing a corrective upwash distribution.

It is found that simple static stability calculations with the water surface assumed undisturbed, at the boat, lead to surprisingly good agreement with the righting moments obtained experimentally under dynamic conditions.
Probability Bracket Notation for Probability Modeling
Creators: name: Wang, Xing M.
name: Scott, Tony C.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Following the Dirac Notation in Quantum Mechanics (QM), we propose the Bracket Notation (PBN) by defining a probability-bra (P-bra), P-ket, P-bracket, P-identity, etc. Using the PBN, many formulae, such as normalizations and expectations in systems of one or more random variables, can now be written in abstract basis-independent expressions, which are easy to expand by inserting a proper P-identity. The time evolution of homogeneous Markov processes can also be formatted in such a way. Our system P-kets are identified with probability vectors, and our system P-bra is comparable to the Doi state function or the Peliti standard bra. In the Heisenberg picture of the PBN, a random variable becomes a stochastic process, and the Chapman-Kolmogorov equations are obtained by inserting a time-dependent P-identity. Also, some QM expressions in the Dirac notation are naturally transformed into probability expressions in PBN by a special Wick rotation. Potential applications show the usefulness of the PBN beyond the constrained domain and range of Hermitian operators on Hilbert Spaces in QM all the way to IT.
description: 20 pages
Short-Baseline Electron Neutrino Oscillation Length After Troitsk
Creators: name: Giunti, C.
name: Laveder, M.
name: Li, Y. F.
name: Long, H. W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We discuss the implications for short-baseline electron neutrino disappearance in the 3+1 mixing scheme of the recent Troitsk bounds on the mixing of a neutrino with mass between 2 and 100 eV. Considering the Troitsk data in combination with the results of short-baseline nu_e and antinu_e disappearance experiments, which include the reactor and Gallium anomalies, we derive a 2 sigma allowed range for the effective neutrino squared-mass difference between 0.85 and 43 eV^2. The upper bound implies that it is likely that oscillations in distance and/or energy can be observed in radioactive source experiments. It is also favorable for the ICARUS@CERN experiment, in which it is likely that oscillations are not washed-out in the near detector. We discuss also the implications for neutrinoless double-beta decay.
description: 5 pages. Final version published in Phys.Rev. D87 (2013) 013004
Evolution of a wild-plant tobamovirus passaged through an exotic host: Fixation of mutations and increased replication
Creators: name: Koh, SH
name: Li, H
name: Sivasithamparam, K
name: Admiraal, Ryan
name: Jones, MGK
name: Wylie, SJ
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Microbiology

description: Tobamovirus is a group of viruses that have become serious pathogens of crop plants. As part of a study informing risk of wild plant virus spill over to crops, we investigated the capacity of a solanaceous-infecting tobamovirus from an isolated indigenous flora to adapt to new exotic hosts. Yellow tailflower mild mottle virus (YTMMV) (genus Tobamovirus, family Virgaviridae) was isolated from a wild plant of yellow tailflower (Anthocercis littoria, family Solanaceae) and initially passaged through a plant of Nicotiana benthamiana, then one of Nicotiana glutinosa where a single local lesion was used to inoculate a N. benthamiana plant. Sap from this plant was used as starting material for nine serial passages through three plant species. The virus titre was recorded periodically, and 85% of the virus genome was sequenced at each passage for each host. Six polymorphic sites were found in the YTMMV genome across all hosts and passages. At five of these, the alternate alleles became fixed in the viral genome until the end of the experiment. Of these five alleles, one was a non-synonymous mutation (U1499C) that occurred only when the virus replicated in tomato. The mutant isolate harbouring U1499C, designated YTMMV-d, increased its titre over passages in tomato and outcompeted the wild-type isolate when both were co-inoculated to tomato. That YTMMV-d had greater reproductive fitness in an exotic host than did the wild type isolate suggests YTMMV evolution is influenced by host changes.
Galaxy redshift surveys with sparse sampling
Creators: name: Chiang, Chi-Ting
name: Wullstein, Philipp
name: Jeong, Donghui
name: Komatsu, Eiichiro
name: Blanc, Guillermo A.
name: Ciardullo, Robin
name: Drory, Niv
name: Fabricius, Maximilian
name: Finkelstein, Steven
name: Gebhardt, Karl
name: Gronwall, Caryl
name: Hagen, Alex
name: Hill, Gary J.
name: Jee, Inh
name: Jogee, Shardha
name: Landriau, Martin
name: Cooper, Erin Mentuch
name: Schneider, Donald P.
name: Tuttle, Sarah
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Survey observations of the three-dimensional locations of galaxies are a powerful approach to measure the distribution of matter in the universe, which can be used to learn about the nature of dark energy, physics of inflation, neutrino masses, etc. A competitive survey, however, requires a large volume (e.g., Vsurvey is roughly 10 Gpc3) to be covered, and thus tends to be expensive. A "sparse sampling" method offers a more affordable solution to this problem: within a survey footprint covering a given survey volume, Vsurvey, we observe only a fraction of the volume. The distribution of observed regions should be chosen such that their separation is smaller than the length scale corresponding to the wavenumber of interest. Then one can recover the power spectrum of galaxies with precision expected for a survey covering a volume of Vsurvey (rather than the volume of the sum of observed regions) with the number density of galaxies given by the total number of observed galaxies divided by Vsurvey (rather than the number density of galaxies within an observed region). We find that regularly-spaced sampling yields an unbiased power spectrum with no window function effect, and deviations from regularly-spaced sampling, which are unavoidable in realistic surveys, introduce calculable window function effects and increase the uncertainties of the recovered power spectrum. While we discuss the sparse sampling method within the context of the forthcoming Hobby-Eberly Telescope Dark Energy Experiment, the method is general and can be applied to other galaxy surveys.
description: 40 pages, 20 figures; analysis of correlation function added; JCAP accepted
Observing Molecular Spinning via the Rotational Doppler Effect
Creators: name: Korech, Omer
name: Steinitz, Uri
name: Gordon, Robert J.
name: Averbukh, Ilya Sh.
name: Prior, Yehiam
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: When circularly polarized light is scattered from a rotating target, a rotational Doppler shift (RDS) emerges from an exchange of angular momentum between the spinning object and the electromagnetic field. Here, we used coherently spinning molecules to generate a shift of the frequency of a circularly polarized probe propagating through a gaseous sample. We used a linearly polarized laser pulse to align the molecules, followed by a second delayed pulse polarized at 45° to achieve unidirectional molecular rotation. The measured RDS is orders of magnitude greater than previously observed by other methods. This experiment provides explicit evidence of unidirectional molecular rotation and paves the way for a new class of measurements in which the rotational direction of molecular reagents may be monitored or actively controlled.
description: Submitted also to Nature Photonics, current status: "under consideration"