cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Horava gravity with mixed derivative terms
Creators: name: Colombo, Mattia
name: Gumrukcuoglu, A. Emir
name: Sotiriou, Thomas P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Horava gravity has been constructed so as to exhibit anisotropic scaling in the ultraviolet, as this renders the theory power-counting renormalizable. However, when coupled to matter, the theory has been shown to suffer from quadratic divergences. A way to cure these divergences is to add terms with both time and space derivatives. We consider this extended version of the theory in detail. We perform a perturbative analysis that includes all modes, determine the propagators and discuss how including mixed-derivative terms affects them. We also consider the Lifshitz scalar with mixed-derivative terms as a toy model for power counting arguments and discuss the influence of such terms on renormalizability.
description: 9 pages
IMS-based mobile learning system
Creators: name: Qureshi, M. Rizwan Jameel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Electronic (E) learning management system is not a novel idea in the educational domain. Learning management systems are used to deal with academic activities such as course syllabi, time table scheduling, assessments and project discussion forums. Almost, all the top universities of world are using general purpose/customized solutions to manage learning management systems like SAP, Oracle, Moodle and Blackboard. The aim of this paper i.e., Mobile (M) Learning System (MLS) is not to substitute the traditional web based E learning applications but to enhance it by amalgamating both web and mobile technologies. This idea justifies the proposal of M learning system to use some of the services of E learning system from mobiles. MLS will use state-of-the-art IP Multimedia Sub System technology. The emphasis in this research will be on the technical implementation of the Session Initiation Protocol (SIP) using IP Multimedia Subsystem (IMS) to develop an MLS not only for the students of the King Abdulaziz University but it will be beneficial for the students of other universities at Kingdom of Saudi Arabia. A customized CBD is proposed as per the nature of MLS project. MLS case study is used as a research design to validate the customized CBD model. Multi-tier applications architecture (client, web, and business) will be adopted during the development of MLS case study. An MLS will be developed and tested using IMS platform to check its practicality for the students of King Abdulaziz University. It is anticipated that the proposed system will significantly facilitate to both the students and teachers of KAU during their off campus activities.
description: 6 pages, 6 figures
Grain Growth in Newly Discovered Young Eruptive Stars
Creators: name: Kospal, Agnes
name: Ábrahám, Péter
name: Carmona, Andrés
name: Chen, Lei
name: Green, Joel D
name: van Boekel, Roy
name: White, Jacob A
Publisher: name: Zenodo
Year: 2020

description: Young eruptive stars show large outbursts due to highly enhanced accretion from the circumstellar disk onto the protostar. We used VLT/VISIR to obtain the first thermal IR spectra of five recently discovered FUor-type young eruptive stars. We study the shape and strength of their silicate feature and find that they mostly contain large amorphous grains, suggesting that large grains are typically not settled to the midplane in FUor disks. This is a general characteristic of FUors, as opposed to regular T Tauri–type stars which display anything from pristine small grains to significant grain growth. We confront the observed silicate features in our targets with the evolutionary scenarios on envelope dispersal around young stars. In our sample, all Class II objects exhibit silicate emission, while for Class I objects, the appearance of the feature in emission or absorption depends on the viewing angle with respect to the outflow cavity, highlighting the importance of geometric effects.
Correspondence Packet, Additions to Building 235, Randolph Air Force Base, Texas
Creators: name: Walter, Chelsea
Year: 1993
Subjects: subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Randolph Air Force Base
valueUri: https://core.tdar.org/browse/geographic-keyword/78971/randolph-air-force-base
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/318/governmental-structure
subject: Historic Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/320/historic-governmental-structure
subject: Building 235
valueUri: https://core.tdar.org/browse/site-type/2741/building-235
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: Correspondence concerning Randolph Air Force Base's request to rehabilitate Building 235 at Randolph Air Force Base, Texas. The projects include the north porch overhang, replacement of the porch slab, and construction of a storage building. Attachments include location maps, historic data, project description and assessment, photographs, and construction drawings.
Lyman Alpha and MgII as Probes of Galaxies and their Environments
Creators: name: Barnes, Luke A.
name: Garel, Thibault
name: Kacprzak, Glenn G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Lyα emission, Lyα absorption and MgII absorption are powerful tracers of neutral hydrogen. Hydrogen is the most abundant element in the universe and plays a central role in galaxy formation via gas accretion and outflows, as well as being the precursor to molecular clouds, the sites of star formation. Since 21cm emission from neutral hydrogen can only be directly observed in the local universe, we rely on Lyα emission, and Lyα and MgII absorption to probe the physics that drives galaxy evolution at higher redshifts. Furthermore, these tracers are sensitive to a range of hydrogen densities that cover the interstellar medium, the circumgalactic medium and the intergalactic medium, providing an invaluable means of studying gas physics in regimes where it is poorly understood. At high redshift, Lyα emission line searches have discovered thousands of star-forming galaxies out to z = 7. The large Lyα scattering cross-section makes observations of this line sensitive to even very diffuse gas outside of galaxies. Several thousand more high-redshift galaxies are known from damped Lyα absorption lines and absorption by the MgII doublet in quasar and GRB spectra. MgII, in particular, probes metal-enriched neutral gas inside galaxy haloes in a wide range of environments and redshifts (0.1 < z < 6.3), including the so-called redshift desert. Here we review what observations and theoretical models of Lyα emission, Lyα and MgII absorption have told us about the interstellar, circumgalactic and intergalactic medium in the context of galaxy formation and evolution.
description: 59 Pages, 19 Figures, 1 Table. Accepted for publication in Publications of the Astronomical Society of the Pacific
Response from the Texas Historical Commission to the Fort Worth Planning Division, Archaeological and Historical Investigations at Camp Bullis, Texas: The 1989 Season
Creators: name: State Historic Preservation Office
Publisher: name: Texas Historical Commission
Year: 1990
Subjects: subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Comal (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/3222/comal-county
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Camp Bullis
valueUri: https://core.tdar.org/browse/geographic-keyword/82533/camp-bullis
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Archaeological Overview
valueUri: https://core.tdar.org/browse/investigation-type/1/archaeological-overview
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: A letter from the Deputy State Historic Preservation Officer with a review and concerns for the Department of the Army's report "Archaeological and Historical Investigations at Camp Bullis; Bexar and Comal Counties, Texas: The 1989 Season."
(:unas) unassigned
Creators: name: (:Unkn) Unknown
Publisher: name: Universita' degli Studi di Salerno
Year: 2024

description: Ricordo della presenza di Dante Della Terza nelle università italiane, della sua personalità come studioso di letteratura e grande mediatore di cultura tra Italia e USA.
description: Memory of the presence of Dante Della Terza at in the Italian Universities, of his personality as a literary scholar and a great mediator of culture, between Italy and USA.
GeoSnap: A 1024x1024 HgCdTe array covering 3-13µm
Creators: name: Atkinson, Dani
name: Meyers, Michael
name: Bowens, Rory
name: Leisenring, Jarron
name: Hoffman, Bill
name: Morzinski, Kate
Publisher: name: Zenodo
Year: 2020

description: GeoSnap is a new HgCdTe detector currently showing QE ~50% across 3-13?m. The device takes advantage of a ROIC currently operated at 85Hz full-frame readout across a 2048x1024 array, with larger sizes easily possible. This talk presents characterization of the first engineering-grade test device from Teledyne Imaging Systems, over the last year conducted at the Universities of Arizona and Michigan. I also describe science applications and planned deployment over the next year.
Discovery of a new Galactic bona fide luminous blue variable with Spitzer
Creators: name: Gvaramadze, V. V.
name: Kniazev, A. Y.
name: Berdnikov, L. N.
name: Langer, N.
name: Grebel, E. K.
name: Bestenlehner, J. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the discovery of a circular mid-infrared shell around the emission-line star Wray 16-137 using archival data of the Spitzer Space Telescope. Follow-up optical spectroscopy of Wray 16-137 with the Southern African Large Telescope revealed a rich emission spectrum typical of the classical luminous blue variables (LBVs) like P Cygni. Subsequent spectroscopic and photometric observations showed drastic changes in the spectrum and brightness during the last three years, meaning that Wray 16-137 currently undergoes an S Dor-like outburst. Namely, we found that the star has brightened by \approx 1 mag in the V and I_c bands, while its spectrum became dominated by Fe ii lines. Taken together, our observations unambiguously show that Wray 16-137 is a new member of the family of Galactic bona fide LBVs.
description: 5 pages, 3 figures, accepted for publication in MNRAS Letters
Environmental Assessment for the Construction of a Medical Modified Urban Assault Course (MUAC) Facility on Camp Bullis Training Site, Texas
Creators: name: Directorate Of Safety, Environment And Fire, Fort Sam Houston
Publisher: name: Fort Sam Houston
Year: 2004
Subjects: subject: JBSA-Sam Houston
valueUri: https://core.tdar.org/browse/geographic-keyword/82532/jbsa-sam-houston
subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Camp Bullis
valueUri: https://core.tdar.org/browse/geographic-keyword/82533/camp-bullis
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: FONSI
valueUri: https://core.tdar.org/browse/other-keyword/150029/fonsi
subject: Urban Assault Course
valueUri: https://core.tdar.org/browse/other-keyword/150030/urban-assault-course
subject: NEPA
valueUri: https://core.tdar.org/browse/other-keyword/110636/nepa
subject: Environment Research
valueUri: https://core.tdar.org/browse/investigation-type/13/environment-research
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: The US Army has prepared an Environmental Assessment (EA) for the construction of a Medical Modified Urban Assault Course (MUAC) facility on Camp Bullis Training Site (CBTS), located in San Antonio, Texas. Based on the following summary of effects (and as discussed in the accompanying EA), the US Army has determined that the Proposed Action (as described below and in Section 1.0 of the EA) is not a major federal action significantly affecting the quality of the human environment, within the meaning of the National Environmental Policy Act of 1969 (NEPA). Therefore, preparation of an Environmental Impact Statement (EIS) is not required.
Inferring metabolic phenotypes from the exometabolome through a thermodynamic variational principle
Creators: name: De Martino, Daniele
name: Capuani, Fabrizio
name: De Martino, Andrea
Publisher: name: arXiv
Year: 2014
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Networks of biochemical reactions, like cellular metabolic networks, are kept in non-equilibrium steady states by the exchange fluxes connecting them to the environment. In most cases, feasible flux configurations can be derived from minimal mass-balance assumptions upon prescribing in- and out-take fluxes. Here we consider the problem of inferring intracellular flux patterns from extracellular metabolite levels. Resorting to a thermodynamic out of equilibrium variational principle to describe the network at steady state, we show that the switch from fermentative to oxidative phenotypes in cells can be characterized in terms of the glucose, lactate, oxygen and carbon dioxide concentrations. Results obtained for an exactly solvable toy model are fully recovered for a large scale reconstruction of human catabolism. Finally we argue that, in spite of the many approximations involved in the theory, available data for several human cell types are well described by the predicted phenotypic map of the problem.
description: 10 pages, to appear in New J Phys (Special Issue)
Nonlinear equations in non-reflexive Banach spaces and strongly nonlinear differential equations
Creators: name: Soltanov, Kamal N.
name: Sprekels, Jürgen
Publisher: name: Weierstrass Institute
Year: 1998
Subjects: subject: Fully nonlinear PDEs
subject: strongly nonlinear elliptic and parabolic problems
subject: nonlinear equations in non-reflexive spaces
subject: existence results
subject: weak solutions
subject: 35J65
subject: 35K60
subject: 35A05

description: In this paper, we study strongly nonlinear degenerate elliptic and parabolic equations of the form F(x,u,Du,...,D(2m-1)u,Lu) = 0 and ut = F(x,t,u,Du,...,D(2m-1)u,Lu), respectively, where L is a linear operator of the derivatives of highest (i.e., of 2m-th) order. Under very weak restrictions on the growth of F with respect to the derivatives of u, existence results for weak solutions are proved. These existence results are based on general solvability results for nonlinear operator equations in Banach spaces which will be proved in this paper.
Mid-infrared heterodyne interferometry for planet formation studies
Creators: name: Berger, Jean-Philippe
name: Bourdarot, Guillaume
Publisher: name: Zenodo
Year: 2020

description: The Planet Formation Imager (PFI) project is an international effort to define the architecture and the technological roadmap for a next-generation long baseline interferometric facility operating in the infrared. PFI aims at reaching an angular resolution and sensitivity sufficient to resolve the composition and kinematic properties of circumplanetary disks surrounding planets in the making. Although direct mid-infrared interferometry such as the one carried at VLTI is currently privileged for sensitivity reasons it comes at a price of a costly and complex infrastructure. In this presentation we will discuss how technological progresses in the field of mid-IR lasers, time synchronisation, high bandwidth mid-IR detectors and photonics correlation might render mid-infrared heterodyne interferometry competitive again while providing an important simplification of the infrastructure. We will end up comparing direct detection schemes with an heterodyne concept.
A Transient Model for the Sublimation Growth of Silicon Carbide Single Crystals
Creators: name: Bubner, Nikolaus
name: Klein, Olaf
name: Philip, Peter
name: Sprekels, Jürgen
name: Wilmánski, Krzysztof
Publisher: name: Weierstrass Institute
Year: 1998
Subjects: subject: Modelling
subject: sublimation growth
subject: heat and mass transfer
subject: numerical sublimation
subject: conservation laws
subject: partial differential equations
subject: 80A20
subject: 65M99
subject: 80A15
subject: 65C20
subject: 35L65

description: We present a transient model for the Modified Lely Method for the sublimation growth of SiC single crystals which consists of all conservation laws including reaction-diffusion equations. The model is based on a mixture theory for the gas phase. First numerical results illustrate the influence of the geometrical set-up inside the reactor on the evolution of the temperature distribution.
Supplementary document for Laser-driven high-resolution MeV x-ray tomography - 7340641.pdf
Creators: name: Hollinger, Reed
name: Wang, Shoujun
name: Anaraki, Sina Zahedpour
name: King, James
name: Zhang, Ping
name: Zeraouli, Ghassan
name: Bengoa, Alejandro Figueroa
name: Sheats, Matt
name: Scott, Shannon
name: Hunter, James
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Supplemental analysis
Baseline assessment of metals and hydrocarbons in the sediments of Lake Mulwala, Australia
Creators: name: Baldwin, D. S
name: Howitt, J. A
Publisher: name: La Trobe
Year: 2023

description: Murray-Darling Freshwater Research Centre

MDFRC item.

An assessment of hydrocarbon and metal/metalloids (arsenic, cadmium, copper, lead, mercury, selenium, zinc) contamination in sediments from Lake Mulwala, Australia, was undertaken. The objectives of the study were: (i) to determine the extent of contamination in the lake sediments, compared to Australian and international sediment quality guidelines, and (ii) to attempt to identify the contaminant sources to the lake. With the exception of a few samples containing elevated levels of arsenic and/or mercury, the levels of all contaminants in the sediment samples taken from the lake were below the 'lower trigger' of the Australian Sediment Quality Guidelines that would warrant further investigation. High molecular weighthydrocarbons (up to 700 mg kg–1) were found in most sediment samples. Non-metric statistical analysis indicated that the contaminant distribution was different in different parts of the lake, with the lowest concentrations generally found at the influent to the lake. No definitive source(s) of contamination could be identified for either metalloids or hydrocarbons.
A multiblob approach to colloidal hydrodynamics with inherent lubrication
Creators: name: Vázquez-Quesada, Adolfo
name: Usabiaga, Florencio Balboa
name: Delgado-Buscalioni, Rafael
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: This work presents an intermediate resolution model of the hydrodynamics of colloidal particles based on a mixed Eulerian-Lagrangian formulation. The particle is constructed with a small set of overlapping Peskin's Immersed Boundary kernels (blobs) which are held together by springs to build up a particle impenetrable core. Here, we used 12 blobs placed in the vertexes of an icosahedron with an extra one in its center. Although the particle surface is not explicitly resolved, we show that the short-distance hydrodynamic responses (flow profiles, translational and rotational mobilities, lubrication, etc) agree with spherical colloids and provide consistent effective radii. A remarkable property of the present multiblob model is that it naturally presents a "divergent" lubrication force at finite inter-particle distance. This permits to resolve the large viscosity increase at dense colloidal volume fractions. The intermediate resolution model is able to recover highly non-trivial (many-body) hydrodynamics using small particles whose radii are similar to the grid size $h$ (in the range $[1.6-3.2]\,h$). Considering that the cost of the embedding fluid phase scales like the cube of the particle radius, this result brings about a significant computational speed-up. Our code Fluam works in Graphics Processor Units (GPU's) and uses Fast Fourier Transform for the Poisson solver, which further improves its efficiency.
description: 30 pages, 13 figures
OAHP Inventory, Building 2427 Motor Repair Shop, Fort Sam Houston, Texas
Creators: name: Walter, Chelsea
Publisher: name: Office of Archaeology and Historic Preservation
Year: 1978
Subjects: subject: Fort Sam Houston
valueUri: https://core.tdar.org/browse/geographic-keyword/83681/fort-sam-houston
subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/318/governmental-structure
subject: Historic Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/320/historic-governmental-structure
subject: Non-Domestic Structures
valueUri: https://core.tdar.org/browse/site-type/309/non-domestic-structures
subject: OAHP
valueUri: https://core.tdar.org/browse/other-keyword/138292/oahp
subject: Building 2427
valueUri: https://core.tdar.org/browse/other-keyword/146580/building-2427
subject: Motor Repair Shop
valueUri: https://core.tdar.org/browse/other-keyword/112215/motor-repair-shop
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Architectural Survey
valueUri: https://core.tdar.org/browse/investigation-type/2/architectural-survey
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: An inventory form by the Office of Archaeology and Historic Preservation for Building 2427 at Fort Sam Houston, Texas. The structure was built in 1934 as a motor repair shop.
NEW TECHNOLOGIES IN PUBLIC RELATIONS
Creators: name: Tworzydło, Dariusz
Publisher: name: figshare
Year: 2022
Subjects: subject: 200102 Communication Technology and Digital Media Studies
subject: FOS: Media and communications
subject: 200104 Media Studies

description: The article includes an analysis and presentation of selected examples of communication tools, which are used in companies to create and maintain relationships with internal and external environment. The problems related with definition of public relations were also discussed. The article presents the advantage and negative consequences of the use of modern tools of PR, as well.
The action dimension of right-angled Artin groups
Creators: name: Avramidi, Grigori
name: Davis, Michael W.
name: Okun, Boris
name: Schreve, Kevin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57Q15, 57Q25, 20F65 (Primary), 57R58 (Secondary)

description: The action dimension of a discrete group $Γ$ is the smallest dimension of a contractible manifold which admits a proper action of $Γ$. Associated to any flag complex $L$ there is a right-angled Artin group, $A_L$. We compute the action dimension of $A_L$ for many $L$. Our calculations come close to confirming the conjecture that if an $\ell^2$-Betti number of $A_L$ in degree $l$ is nonzero, then the action dimension of $A_L$ is $\ge 2l$.
description: 16 pages
Molecular hydrogen from z = 0.0963 DLA towards the QSO J1619+3342
Creators: name: Srianand, Raghunathan
name: Rahmani, Hadi
name: Muzahid, Sowgat
name: Mohan, Vijay
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the detection of H2 in a zabs= 0.0963 Damped Lyman-α (DLA) system towards zem = 0.4716 QSO J1619+3342. This DLA has log N(H I) = 20.55 (0.10), 18.13 < log N(H2) < 18.40, [S/H] = -0.62 (0.13), [Fe/S] = -1.00 (0.17) and the molecular fraction -2.11 < log f(H2) < -1.85. The inferred gas kinetic temperature using the rotational level population is in the range 95 - 132 K. We do not detect C I or C II* absorption from this system. Using R- and V-band deep images we identify a sub-L* galaxy at an impact parameter of 14 kpc from the line of sight, having consistent photometric redshift, as a possible host for the absorber. We use the photoionization code CLOUDY to get the physical conditions in the H2 component using the observational constrains from H2, C I, C II* and Mg I. All the observations can be consistently explained if one or more of the following is true: (i) Carbon is underabundant by more than 0.6 dex as seen in halo stars with Z ~ 0.1 Z_sun, (ii) H I associated with H2 component is less than 50% of the H I measured along the line of sight and (iii) the H2 formation rate on the dust grains is at least a factor two higher than what is typically used in analytic calculations for Milky Way interstellar medium. Even when these are satisfied, the gas kinetic temperature in the models are much lower than what is inferred from the ortho-to-para ratio of the molecular hydrogen. Alternatively the high kinetic temperature could be a consequence of contribution to the gas heating from non-radiative heating processes seen in hydrodynamical simulations.
description: 10 pages, 4 figues, resubmitted to the MNRAS after minor revision suggested by the referee
Constraining the shaping mechanism of the Red Rectangle through spectro-polarimetry of its central star
Creators: name: Gonzalez, M. J. Martinez
name: Ramos, A. Asensio
name: Sainz, R. Manso
name: Corradi, R. L. M.
name: Leone, F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We carried out high-sensitivity spectropolarimetric observations of the central star of the Red Rectangle proto-planetary nebula with the aim of constraining the mechanism that gives its biconical shape. The stellar light of the central binary system is linearly polarised since it is scattered on the dust particles of the nebula. Surprisingly, the linear polarisation in the continuum is aligned with one of the spikes of the biconical outflow. Also, the observed Balmer lines as well as the Ca II K lines are polarised. These observational constraints are used to confirm or reject current theoretical models for the shaping mechanism of the Red Rectangle. We propose that the observed polarisation is very unlikely generated by a uniform biconical stellar wind. Also, the hypothesis of a precessing jet does not completely match the observations since it will require a jet aperture larger than that of the nebula.
description: accepted in A&A
Light mirror production in Chile
Creators: name: Bayo, Amelia
Publisher: name: Zenodo
Year: 2020

description: Planet Formation research is blooming in an era where we are moving from speaking about "protoplanetary disks" to "planet forming disks" (Andrews+2018). However, this transition is still motivated by indirect (but convincing) hints. Up to date, the direct detection of planets "in the making" remains elusive with the remarkable exception of PDS70b and c (Keppler+2018; Mueller+2018; and Haffert+2019). The scarcity of detections is attributable to technical challenges, and even for the rare jewels that we can detect, characterization (resolving their hill spheres) is unachievable. The next step in this direction demands from near to mid-infrared interferometry to jump from ~100m baselines to ~1km, and from very few telescopes to 20 or more (PFI like concepts, Monnier+2018). This transition needs for more affordable telescopes to be designed, where the driving cost is given by the diameter of the primary mirror. Our approach to tackle this problem relies on the production of light mirrors.
Response from Mark Wolfe to David Brigham, Project Review for Potential Demolition of Building 134, Fort Sam Houston, Texas
Creators: name: Wright, Caroline
name: Wolfe, Mark
Publisher: name: Texas Historical Commission
Year: 2011
Subjects: subject: JBSA-Sam Houston
valueUri: https://core.tdar.org/browse/geographic-keyword/82532/jbsa-sam-houston
subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/318/governmental-structure
subject: Historic Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/320/historic-governmental-structure
subject: Building 134
valueUri: https://core.tdar.org/browse/other-keyword/146284/building-134
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: The Texas Historical Commission was contacted by Fort Sam Houston about the discussions related to potential demolition of historic Building 134. This letter serves as comment on the proposed undertaking from the State Historic Preservation Officer, the Executive Director of the Texas Historical Commission. Copied to this correspondence is Joan Gaither (Society for the Preservation of Fort Sam Houston), Rolette Schreckenghost (San Antonio Conservation Society), and Shanon Peterson (City of San Antonio Office of Historic Preservation).
Fort Sam Houston Integrated Cultural Resources Management Plan and Environmental Assessment
Creators: name: Clow, Victoria Green
name: Prior, Marsha
name: Osburn, Tiffany
Publisher: name: Geo-Mairne, Inc.
Year: 2008
Subjects: subject: JBSA-Sam Houston
valueUri: https://core.tdar.org/browse/geographic-keyword/82532/jbsa-sam-houston
subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Texas (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/348/texas-state-territory
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Euroamerican
valueUri: https://core.tdar.org/browse/culture-keyword/28/euroamerican
subject: Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/318/governmental-structure
subject: Military Structure
valueUri: https://core.tdar.org/browse/site-type/322/military-structure
subject: Non-Domestic Structures
valueUri: https://core.tdar.org/browse/site-type/309/non-domestic-structures
subject: Domestic Structure or Architectural Complex
valueUri: https://core.tdar.org/browse/site-type/251/domestic-structure-or-architectural-complex
subject: Environment Research
valueUri: https://core.tdar.org/browse/investigation-type/13/environment-research
subject: Archaeological Overview
valueUri: https://core.tdar.org/browse/investigation-type/1/archaeological-overview
subject: Architectural Survey
valueUri: https://core.tdar.org/browse/investigation-type/2/architectural-survey
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: This Integrated Cultural Resources Management Plan (ICRMP) follows the requirements for the preparation of an ICRMP as defined in AR-2004 using the guidance found in DA PAM 200-4. This ICRMP serves as a guide, with the Historic Properties Component for the implementation of the Army Alternative Procedures for National Historic Preservation Act Section 106 Compliance activities at Fort Sam Houston. This text is designed to serve as a five-year plan for the integrated management of the historic properties contained within the limits of Fort Sam Houston Military Reservation, Bexar County, Texas, for fiscal years 2007-2012. The plan contains: an introduction, planning level survey, review of past cultural resources studies and their findings, an economic analysis section, public involvement plan, and ICRMP goals and recommendations. Also provided are appendices containing a glossary, brief overview of laws and regulations, detailed overviews of the cultural and physical environment, cultural resources inventory, list of Native American contacts, programmatic agreements, and Finding of No Significant Impact for the implementation of this ICRMP. The intended audience of this document is the Installation Commander, FSH personnel involved in planning activities, the FSH Cultural Resources Manager who is the individual responsible for the day-to-day management of cultural resources.
A study of the coarsening in tin/lead solders
Creators: name: Dreyer, Wolfgang
name: Müller, Wolfgang H.
Publisher: name: Weierstrass Institute
Year: 1998
Subjects: subject: Diffusion
subject: phase transision
subject: interface problems
subject: initial value problems for higher order parabolic equations
subject: boundary value problems for higher order parabolic equations
subject: 76R50
subject: 82B26
subject: 82B24
subject: 35K30
subject: 35K35

description: This paper presents a model, which is capable to simulate the coarsening process observed during thermo-mechanical treatment of binary tin-lead solders. Fourier transforms and spectral theory are used for the numerical treatment of the thermo-elastic as well as of the diffusion problem encountered during phase separation in these alloys. More specifically, the analysis is based exclusively on continuum theory, first, relies on the numerical computation of the local stresses and strains in a representative volume element (RVE). Second, this information is used in an extended diffusion equation to predict the local concentrations of the constituents of the solder. Besides the classical driving forces for phase separation, as introduced by Fick and Cahn-Hilliard, this equation contains an additional term which links the mechanical to the thermodynamical problem. It connects internal and external stresses, strains, temperature, as well as concentrations and allows for a comprehensive study of the coarsening and aging process.
Statistical Eclipses of Close-in Kepler Sub-Saturns
Creators: name: Sheets, Holly A.
name: Deming, Drake
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present a method to detect small atmospheric signals in Kepler's planet candidate light curves by averaging light curves for multiple candidates with similar orbital and physical characteristics. Our statistical method allows us to measure unbiased physical properties of Kepler's planet candidates, even for candidates whose individual signal-to-noise precludes the detection of their secondary eclipse. We detect a secondary eclipse depth of 3.83 +1.10/-1.11 ppm for a group of 31 sub-Saturn (R < 6 Earth radii) planet candidates with the greatest potential for a reflected light signature ((R_p/a)^2 > 10 ppm). Including Kepler-10b in this group increases the depth to 5.08 +0.71/-0.72 ppm. For a control group with (R_p/a)^2 < 1 ppm, we find a depth of 0.36 +/- 0.37 ppm, consistent with no detection. We also analyze the light curve of Kepler-10b and find an eclipse depth of 7.08 +/- 1.06 ppm. If the eclipses are due solely to reflected light, this corresponds to a geometric albedo of 0.22 +/- 0.06 for our group of close-in sub-Saturns, 0.37 +/- 0.05 if including Kepler-10b in the group, and 0.60 +/- 0.09 for Kepler-10b alone. Including a thermal emission model does not change the geometric albedo appreciably, assuming the Bond albedo is 2/3 the geometric albedo. Our result for Kepler-10b is consistent with previous works. Our result for close-in sub-Saturns shows that Kepler-10b is unusually reflective, but our analysis is consistent with the results of Demory (2014) for super-Earths. Our results also indicate that hot Neptunes are typically more reflective than hot Jupiters.
description: 10 pages, 7 figures, 3 tables, accepted for publication in ApJ
Corner contribution to the entanglement entropy of strongly-interacting O(2) quantum critical systems in 2+1 dimensions
Creators: name: Stoudenmire, E. M.
name: Gustainis, Peter
name: Johal, Ravi
name: Wessel, Stefan
name: Melko, Roger G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In a D=2+1 quantum critical system, the entanglement entropy across a boundary with a corner contains a subleading logarithmic scaling term with a universal coefficient. It has been conjectured that this coefficient is, to leading order, proportional to the number of field components N in the associated O(N) continuum $ϕ^4$ field theory. Using density matrix renormalization group calculations combined with the powerful numerical linked cluster expansion technique, we confirm this scenario for the O(2) Wilson-Fisher fixed point in a striking way, through direct calculation at the quantum critical points of two very different microscopic models. The value of this corner coefficient is, to within our numerical precision, twice the coefficient of the Ising fixed point. Our results add to the growing body of evidence that this universal term in the Rényi entanglement entropy reflects the number of low-energy degrees of freedom in a system, even for strongly interacting theories.
description: 6 pages, 6 figures
OAHP Inventory, Building 141 Telephone Exchange, Fort Sam Houston, Texas
Creators: name: Walter, Chelsea
Publisher: name: Office of Archaeology and Historic Preservation
Year: 1980
Subjects: subject: Fort Sam Houston
valueUri: https://core.tdar.org/browse/geographic-keyword/83681/fort-sam-houston
subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Fort Sam Houston National Historic Landmark District
valueUri: https://core.tdar.org/browse/geographic-keyword/82955/fort-sam-houston-national-historic-landmark-district
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/318/governmental-structure
subject: Historic Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/320/historic-governmental-structure
subject: Non-Domestic Structures
valueUri: https://core.tdar.org/browse/site-type/309/non-domestic-structures
subject: OAHP
valueUri: https://core.tdar.org/browse/other-keyword/138292/oahp
subject: Telephone Exchange
valueUri: https://core.tdar.org/browse/other-keyword/158674/telephone-exchange
subject: Building 141
valueUri: https://core.tdar.org/browse/other-keyword/146293/building-141
subject: General Storehouse
valueUri: https://core.tdar.org/browse/other-keyword/153718/general-storehouse
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Architectural Survey
valueUri: https://core.tdar.org/browse/investigation-type/2/architectural-survey
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: An inventory form by the Office of Archaeology and Historic Preservation for Building 141 at Fort Sam Houston, Texas. The structure was built in 1913 as a telephone exchange and now serves as a general storehouse. Included in the inventory are black and white photographs taken in 1980 of the structure.
Laura Benítez: la filosofía, el sacrificio y el arte de enseñar a pensar
Creators: name: Oviedo Pérez, Ramsés Jabín
Publisher: name: Milmesetas
Year: 2024
Subjects: entrevista
investigadora emérita
UNAM
filosofía en México

description: Laura Benítez Grobet (Ciudad de México, 1944) es una figura clave de la difusión, discusión y revaloración de la filosofía en México. La doctora Laura —que recién recibió el grado de investigadora emérita en la UNAM y cumplió alegremente los 80 años de vida— ha profundizado en un obra inteligente y soberana: la filosofía moderna y novohispana. En la presente entrevista, platicamos los momentos clave que marcaron su entrada a la filosofía. Desde su descubrimiento de Manuel García Morente hasta su compromiso con autores como Descartes y Sigüenza y Góngora, Benítez nos revela las anécdotas personales y académicas que moldearon su pensamiento. En este diálogo que hicimos a través de una videollamada, Benítez nos invita a repensar las “vías de reflexión filosófica” que nos conectan con los clásicos y envía un mensaje a las nuevas generaciones de estudiantes para mantener el amor por la filosofía.
Iterative procedure for multidimensional Euler equations
Creators: name: Dreyer, Wolfgang
name: Kunik, Matthias
name: Sabelfeld, Karl
name: Simonov, Nikolai
name: Wilmánski, Krzysztof
Publisher: name: Weierstrass Institute
Year: 1998
Subjects: subject: Initial value problems
subject: hyperbolic systems of first order
subject: conservation laws
subject: shocks
subject: kinetic theory
subject: Monte Carlo methods
subject: 35L45
subject: 35L65
subject: 35L67
subject: 82B40
subject: 11K45

description: A numerical iterative scheme is suggested to solve the Euler equations in two and three dimensions. The step of the iteration procedure consists of integration over the velocity which is here carried out by three different approximate integration methods, and in particular, by a special Monte Carlo technique. Regarding the Monte Carlo integration, we suggest a dependent sampling technique which ensures that the statistical errors are quite small and uniform in space and time. Comparisons of the Monte Carlo calculations with the trapezoidal rule and a gaussian integration method show good agreement.
Linear Elliptic Boundary Value Problems with Non-smooth Data: Normal Solvability on Sobolev-Campanato Spaces
Creators: name: Griepentrog, Jens André
name: Recke, Lutz
Publisher: name: Weierstrass Institute
Year: 1998
Subjects: subject: Bounded measurable coefficients
subject: Lipschitz domains
subject: Regular sets
subject: Non-homogeneous mixed boundary conditions
subject: Regularity up to the boundary of weak solutions
subject: Smoothness of the coefficient-to-solution-map
subject: Arbitrary space dimension
subject: 35J55
subject: 46E35
subject: 47A53

description: In this paper linear elliptic boundary value problems of second order with non-smooth data (L∞-coefficients, Lipschitz domains, regular sets, non-homogeneous mixed boundary conditions) are considered. It is shown that such boundary value problems generate Fredholm operators between appropriate Sobolev-Campanato spaces, that the weak solutions are Hölder continuous up to the boundary and that they depend smoothly (in the sense of a Hölder norm) on the coefficients and on the right hand sides of the equations and boundary conditions.
Letter from Stanley Graves to John Brenneman, Programmatic Agreement Revision, Fort Sam Houston, Texas
Creators: name: Graves, Stanley O.
Publisher: name: Texas Historical Commission
Year: 1996
Subjects: subject: JBSA-Sam Houston
valueUri: https://core.tdar.org/browse/geographic-keyword/82532/jbsa-sam-houston
subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management
subject: Research Design / Data Recovery Plan
valueUri: https://core.tdar.org/browse/investigation-type/9/research-design-data-recovery-plan

description: After meeting with the Environmental and Natural Resources Branch and the Advisory Council at Fort Sam Houston, the Texas Historical Commission has written this letter with recommended changes and an attached revision of the Programmatic Agreement discussed.
A 3.55 keV line from $\text{DM}\rightarrow a \rightarrow γ$: predictions for cool-core and non-cool-core clusters
Creators: name: Conlon, Joseph P.
name: Powell, Andrew J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We further study a scenario in which a 3.55 keV X-ray line arises from decay of dark matter to an axion-like particle (ALP), that subsequently converts to a photon in astrophysical magnetic fields. We perform numerical simulations of Gaussian random magnetic fields with radial scaling of the magnetic field magnitude with the electron density, for both cool-core `Perseus' and non-cool-core `Coma' electron density profiles. Using these, we quantitatively study the resulting signal strength and morphology for cool-core and non-cool-core clusters. Our study includes the effects of fields of view that cover only the central part of the cluster, the effects of offset pointings on the radial decline of signal strength and the effects of dividing clusters into annuli. We find good agreement with current data and make predictions for future analyses and observations.
description: 14 pages, 6 figures
On parameter estimation for ergodic Markov chains withunbounded loss functions
Creators: name: Veretennikov, Alexandre Yu.
Publisher: name: Weierstrass Institute
Year: 1998
Subjects: subject: Asymptotic normality
subject: efficiency
subject: polynomial loss function
subject: maximum likelihood estimation
subject: Hajek - Le Cam efficiency
subject: 62-02
subject: 62F12

description: We establish the Hajek - Le Cam asymptotic efficiency of maximum likelihood estimators for "polynomially ergodic" Markov regular experiments in the class of loss functions with a polynomial growth.