cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Galactic Star Formation with NIKA2 (GASTON): Evidence of mass accretion onto dense clumps
Creators: name: Rigby, A. J.
name: Adam, R.
name: Ade, P.
name: Ajeddig, H.
name: Anderson, M.
name: André, P.
name: Artis, E.
name: Aussel, H.
name: Bacmann, A.
name: Beelen, A.
name: Benoît, A.
name: Berta, S.
name: Bing, L.
name: Bourrion, O.
name: Bracco, A.
name: Calvo, M.
name: Catalano, A.
name: De Petris, M.
name: Désert, F. -X.
name: Doyle, S.
name: Driessen, E. F. C.
name: García, P.
name: Gomez, A.
name: Goupy, J.
name: Kéruzoré, F.
name: Kramer, C.
name: Ladjelate, B.
name: Lagache, G.
name: Leclercq, S.
name: Lestrade, J. -F.
name: Macías-Pérez, J. -F.
name: Maury, A.
name: Mauskopf, P.
name: Mayet, F.
name: Monfardini, A.
name: Muñoz-Echeverría, M.
name: Peretto, N.
name: Perotto, L.
name: Pisano, G.
name: Ponthieu, N.
name: Revéret, V.
name: Ristorcelli, I.
name: Ritacco, A.
name: Romero, C.
name: Roussel, H.
name: Ruppin, F.
name: Schuster, K.
name: Shu, S.
name: Sievers, A.
name: Tucker, C.
name: Watkins, E. J.
name: Zylka, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: High-mass stars ($m_* \gtrsim 8 \, M_\odot$) play a crucial role in the evolution of galaxies, and so it is imperative that we understand how they are formed. We have used the New IRAM KIDs Array 2 (NIKA2) camera on the Institut de Radio Astronomie Millimétrique (IRAM) 30-m telescope to conduct high-sensitivity continuum mapping of $\sim2$ deg$^2$ of the Galactic plane (GP) as part of the Galactic Star Formation with NIKA2 (GASTON) large program. We have identified a total of 1467 clumps within our deep 1.15 mm continuum maps and, by using overlapping continuum, molecular line, and maser parallax data, we have determined their distances and physical properties. By placing them upon an approximate evolutionary sequence based upon 8 $μ$m $\textit{Spitzer}$ imaging, we find evidence that the most massive dense clumps accrete material from their surrounding environment during their early evolution, before dispersing as star formation advances, supporting clump-fed models of high-mass star formation.
description: To appear in the Proceedings of the International Conference entitled "mm Universe @ NIKA2", Rome (Italy), June 2021, EPJ Web of conferences
Clustered Error Correction of Codeword-Stabilized Quantum Codes
Creators: name: Li, Yunfan
name: Dumer, Ilya
name: Pryadko, Leonid P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Codeword stabilized (CWS) codes are a general class of quantum codes that includes stabilizer codes and many families of non-additive codes with good parameters. For such a non-additive code correcting all t-qubit errors, we propose an algorithm that employs a single measurement to test all errors located on a given set of t qubits. Compared with exhaustive error screening, this reduces the total number of measurements required for error recovery by a factor of about 3^t.
description: 4 pages, 2 figures, revtex4; number of editorial changes in v4
Two-time quantum transport and quantum diffusion
Creators: name: Kleinert, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Based on the nonequilibrium Green's function technique, a unified theory is developed that covers quantum transport and quantum diffusion in bulk semiconductors on the same footing. This approach, which is applicable to transport via extended and localized states, extends previous semi-phenomenological studies and puts them on a firm microscopic basis. The approach is sufficiently general and applies not only to well-studied quantum transport problems, but also to models, in which the Hamiltonian does not commute with the dipole operator. It is shown that, even for the unified treatment of quantum transport and quantum diffusion in homogeneous systems, all quasi-momenta of the carrier distribution function are present and fulfill their specific function. Particular emphasis is put on the double-time nature of quantum kinetics. To demonstrate the existence of robust macroscopic transport effects that have a true double-time character, a phononless steady-state current is identified that appears only beyond the generalized Kadanoff-Baym ansatz.
description: 25 pages, 1 figure
Dynamics and quantum Zeno effect for a qubit in either a low- or high-frequency bath: A non-markovian approach beyond the rotating-wave approximation
Creators: name: Cao, Xiufeng
name: You, J. Q.
name: Zheng, H.
name: Nori, Franco
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We use a non-Markovian approach to study the decoherence dynamics of a qubit in either a low- or high-frequency bath modeling the qubit environment. This approach is based on a unitary transformation and does not require the rotating-wave approximation. We show that for low-frequency noise, the bath shifts the qubit energy towards higher energies (blue shift), while the ordinary high-frequency cutoff Ohmic bath shifts the qubit energy towards lower energies (red shift). In order to preserve the coherence of the qubit, we also investigate the quantum Zeno effect in two cases: low- and high-frequency baths. For very frequent projective measurements, the low-frequency bath gives rise to the quantum anti-Zeno effect on the qubit. The quantum Zeno effect only occurs in the high-frequency cutoff Ohmic bath, after considering counter-rotating terms. For a high-frequency environment, the decay rate should be faster (without frequent measurements) or slower (with frequent measurements, in the Zeno regime), compared to the low-frequency bath case. The experimental implementation of our results here could distinguish the type of bath (either a low- or high-frequency one) and protect the coherence of the qubit by modulating the dominant frequency of its environment.
description: 26 pages, 4 figures
title: Design and Testing of a Nanosatellite Simulator Reaction Wheel Attitude Control System
Creators: name: Long, Fredric William
Publisher: name: Utah State University
Year: 2014

description: Attitude control of a satellite is required for the pointing of communications antennas and other instruments. For this reason, a control algorithm capable of precision pointing is important. Because the process of sending a satellite into space is time consuming and costly, ground-based methods of testing are paramount. A simulator is a low-cost, groundbased system made to mimic the conditions of a weightless satellite in space. The simulator used in this project controls attitude through applying torque to reaction wheels. The objective of this project is to derive and test a control algorithm for the attitude control of a satellite simulator.
title: A Secure Communication System for Early Childhood Collaboration System
Creators: name: Kang, Hao
Publisher: name: Utah State University
Year: 2014

description: The Early Childhood collaboration System (ECCS) is a distributed health data system which provides coordinated, de-identified healthcare information to various types of data consumers. To satisfy this requirement, the ECCS needs a matcher that utilizes Personal Identifying Information (PII) to coordinate information from a wide range of data sources. Due to the sensitivity of PII, the ECCS also needs to guarantee that only matcher can access PII. This report describes a reusable subsystem, called Medical Records Secure Messaging (MRSecureMessaging), which utilizes a reliable cryptographic algorithm to encrypt PII and other confidential data so that matcher and data consumers cannot access each other’s data. It also contains a customized authentication protocol that allows data sources to verify the intended recipient.
title: Nachrichten aus Niedersachsens Urgeschichte, Beiheft 22; Fundchronik Niedersachsen 2017
title: Beiheft 22; Fundchronik Niedersachsen 2017
titleType: AlternativeTitle
Creators: name: Nachrichten Aus Niedersachsens Urgeschichte
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2024

description: Bildnachweise...325
Fotonachweise...323-324
Verzeichnis der Katalognummern nach Autorinnen und Autoren...317-318
Verzeichnis der Fundorte nach Epochen...303-315
Landkreis Wolfenbüttel...300
Landkreis Wittmund...298-300
Landkreis Wesermarsch...294-298
Landkreis Verden...276-294
Landkreis Vechta...269-276
Landkreis Stade...260-269
Landkreis Schaumburg...245-260
Kreisfreie Stadt Salzgitter...242-245
Landkreis Rotenburg (Wümme)...231-242
Landkreis Peine...217-231
Landkreis Osterholz...216-217
Landkreis Osnabrück...201-216
Kreisfreie Stadt Osnabrück...199-201
Landkreis Oldenburg (Oldb.)...195-199
Kreisfreie Stadt Oldenburg (Oldb.)...193-195
Landkreis Nienburg (Weser)...159-186
Landkreis Northeim...186-192
Landkreis Lüchow-Dannenberg...153-154
Landkreis Lüneburg...154-159
Landkreis Leer...145-153
Landkreis Hildesheim...140-145
Landkreis Helmstedt...135-140
Landkreis Heidekreis...130-135
Landkreis Harburg...126-130
Region Hannover...99-126
Landkreis Hameln-Pyrmont...93-99
Landkreis Grafschaft Bentheim...90-93
Landkreis Göttingen...85-90
Landkreis Goslar...80-84
Landkreis Gifhorn...74-80
Landkreis Friesland...73-74
Landkreis Emsland...66-73
Kreisfreie Stadt Emden...58-66
Landkreis Diepholz...26-58
Landkreis Cuxhaven...19-26
Landkreis Cloppenburg...15-18
Landkreis Celle...14-15
Landkreis Aurich...11-13
Literatursigel und abgekürzt zitierte Literatur...8
Verzeichnis der Abkürzungen und Sigel...7
Inhaltsverzeichnis
Titelei
Numerical study of multiparticle production in $ϕ^4$ theory: comparison with analytic results
Creators: name: Demidov, S. V.
name: Farkhtdinov, B. R.
name: Levkov, D. G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We develop a numerical method to compute the probabilities of multiparticle production in weakly coupled scalar theories. Our technique is based on D.T. Son's semiclassical method of singular solutions. Applying it to the process $1 \to n$ in the unbroken four-dimensional $λϕ^4$ theory, we reproduce the known results at ${1 \ll n \ll λ^{-1}}$.
description: 4 pages, 3 figures, accepted in JETP Letters
title: Training Paraeducators to Use Behavior Management Strategies: Implementation and Evaluation of a Brief Targeted Intervention
Creators: name: Whiting, Aubrey
Publisher: name: Utah State University
Year: 2014

description: Training paraprofessionals to be highly qualified providers of services to students with disabilities is a requirement of the Individuals with Disabilities Education Improvement Act (IDEIA), although many special education paraprofessionals still lack the skills and knowledge to work with students with special education needs – particularly those who engage in disruptive behaviors. This project evaluated the use of one module of a 10-week online paraeducator inservice training (Morgan et al., 2004) that focused on behavioral interventions. Five paraprofessionals who currently work at a public school for students with significant behavior problems in a rural school district in the Western United States participated in the training. The live face-to-face training included direct instruction on the basic principles of applied behavior analysis. A single-case pretest-posttest design was used to evaluate the effectiveness of the face-to-face training for all five participants immediately after the training had ended, and the extent to which participants maintained the information one month after the training session. Data collected on participants’ acquisition and maintenance of knowledge of behavior management strategies based on the principles of applied behavior analysis indicate that the training was successful.
title: Nachrichten aus Niedersachsens Urgeschichte, Beiheft 21; Fundchronik Niedersachsen 2016
title: Beiheft 21; Fundchronik Niedersachsen 2016
titleType: AlternativeTitle
Creators: name: Nachrichten Aus Niedersachsens Urgeschichte
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2024

description: Bildnachweise...303
Fotonachweise...301-302
Verzeichnis der Katalognummern nach Autorinnen und Autoren...295-296
Verzeichnis der Fundorte nach Epochen...281-293
Landkreis Wolfenbüttel...273-277
Landkreis Wittmund...263-273
Landkreis Wesermarsch...260-263
Landkreis Verden...252-260
Landkreis Vechta...243-252
Landkreis Uelzen...240-243
Landkreis Stade...228-240
Landkreis Schaumburg...209-228
Landkreis Rotenburg (Wümme)...198-209
Landkreis Peine...190-198
Landkreis Osterholz...185-190
Landkreis Osnabrück...179-185
Kreisfreie Stadt Osnabrück...175-179
Landkreis Oldenburg (Oldb.)...175
Kreisfreie Stadt Oldenburg (Oldb.)...173-175
Landkreis Northeim...172-173
Landkreis Nienburg (Weser)...158-172
Landkreis Lüneburg...156-158
Landkreis Lüchow-Dannenberg...155-156
Landkreis Leer...149-155
Landkreis Hildesheim...144-149
Landkreis Helmstedt...135-144
Landkreis Heidekreis...133-134
Landkreis Harburg...120-133
Region Hannover...74-120
Landkreis Hameln-Pyrmont...72-74
Landkreis Grafschaft Bentheim...59-72
Landkreis Göttingen...47-59
Landkreis Emsland...39-47
Kreisfreie Stadt Emden...39
Landkreis Diepholz...30-38
Landkreis Cuxhaven...23-30
Landkreis Cloppenburg...17-23
Landkreis Celle...17
Kreisfreie Stadt Braunschweig...15-17
Landkreis Aurich...11-15
Landkreis Ammerland...11
Literatursigel und abgekürzt zitierte Literatur...8
Verzeichnis der Abkürzungen und Sigel...7
Inhaltsverzeichnis
Titelei
Thermalisation time and specific heat of neutron stars crust
Creators: name: Fortin, M.
name: Grill, F.
name: Margueron, J.
name: Sandulescu, N.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Theory (nucl-th)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We discuss the thermalisation process of the neutron stars crust described by solving the heat transport equation with a microscopic input for the specific heat of baryonic matter. The heat equation is solved with initial conditions specific to a rapid cooling of the core. To calculate the specific heat of inner crust baryonic matter, i.e., nuclear clusters and unbound neutrons, we use the quasiparticle spectrum provided by the Hartree-Fock-Bogoliubov approach at finite temperature. In this framework we analyse the dependence of the crust thermalisation on pairing properties and on cluster structure of inner crust matter. It is shown that the pairing correlations reduce the crust thermalisation time by a very large fraction. The calculations show also that the nuclear clusters have a non-negligible influence on the time evolution of the surface temperature of the neutron star.
description: 7 pages, 5 figures, submitted to Phys. Rev. C
title: Complicaciones Arteriales del Injerto Renal: Diagnóstico y Manejo Endovascular
Creators: name: Manso del Caño, Javier
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Transplantation
subject: Fistula
subject: Embolism / Thrombosis
subject: Diagnostic procedure
subject: Embolisation
subject: Angioplasty
subject: Ultrasound-Colour Doppler
subject: CT-Angiography
subject: Catheter arteriography
subject: Kidney
subject: Interventional vascular
subject: Arteries / Aorta

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Las complicaciones arteriales en el trasplante renal se producen en el 3-15% de los trasplantes,
por lo que si en España se realizaron 2552 trasplantes renales en 2013,
según datos de la Organización Nacional de Trasplantes,
entonces se dieron...
title: Random Motion and the Diffusion of Brine Shrimp: A Project Based Learning Unit
Creators: name: Atkins, Rebecca
Publisher: name: Utah State University
Year: 2009

description: Over the years, there have been several trends, philosophies, and ideas about how mathematics should be taught. These have included progressive movements, essentialist movements, drill and practice, teacher-centered methodologies, student-centered methodologies, and others. However, despite these various instructional trends, research has found that mathematics teachers have basically taught the same way for years, with little or no variation with respect to the changing trends (Ward, 2001). For many students, the traditional teaching method employed in their mathematics classes is typically centered on the teacher and includes lecture in which the teacher provides the necessary definitions and notations and does several sample problems. The teacher then assigns the students similar problems from the textbook for in-class practice and homework that is graded and collected the following day. This teaching method tends to increase students' computation and algorithmic ability, but does little to promote deep, conceptual understanding.
title: Utilidad del angio-TC en hemorragia intracerebral espontánea.
Creators: name: López Farfan, Anyi Milena
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Neuroradiology brain

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Establecer la utilidad de realizar angio-TC,
en la fase aguda de una hemorragia intracerebral...
On the Tidal Formation of Dark Matter Deficient Galaxies
Creators: name: Ogiya, Go
name: Bosch, Frank C. van den
name: Burkert, Andreas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Previous studies have shown that dark matter deficient galaxies (DMDG) such as NGC1052-DF2 (hereafter DF2) can result from tidal stripping. An important question, though, is whether such a stripping scenario can explain DF2's large specific frequency of globular clusters (GCs). After all, tidal stripping and shocking preferentially remove matter from the outskirts. We examine this using idealized, high-resolution simulations of a regular dark matter dominated galaxy that is accreted onto a massive halo. As long as the initial (pre-infall) dark matter halo of the satellite is cored, which is consistent with predictions of cosmological, hydrodynamical simulations, the tidal remnant can be made to resemble DF2 in all its properties, including its GC population. The required orbit has a peri-centre at the 8.3 percentile of the distribution for subhaloes at infall, and thus is not particularly extreme. On this orbit the satellite loses 98.5 (30) percent of its original dark matter (stellar) mass, and thus evolves into a DMDG. The fraction of GCs that is stripped off depends on the initial radial distribution. If, at infall, the median projected radius of the GC population is roughly two times that of the stars, consistent with observations of isolated galaxies, only $\sim 20$ percent of the GCs are stripped off. This is less than for the stars, which is due to dynamical friction counteracting the tidal stirring. We predict that, if indeed DF2 was crafted by strong tides, its stellar outskirts should have a very shallow metallicity gradient.
description: 15 pages, 10 figures and 2 appendices, accepted for publication in MNRAS
title: Heridas por asta de toro. Hallazgos radiológicos clave en la urgencia
Creators: name: Fernandez Prudencio, Luis
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Ultrasound
subject: CT
subject: Conventional radiography
subject: Trauma
subject: Musculoskeletal soft tissue
subject: Abdomen

description: Objetivos
Material y método
Resultados
Conclusiones
Bibliografía
description: Objetivos:
Conocer las caracteristicas propias de las heridas por asta de toro y su epidemiología. Reconocer qué estructuras son las más frecuentemente afectadas y sus hallazgos en pruebas de imagen. Exponer nuestra experiencia en 28 casos por heridas de...
The sl_3 Selberg integral
Creators: name: Warnaar, S. Ole
Publisher: name: arXiv
Year: 2009
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Combinatorics (math.CO)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 33C70, 33D05, 33D52

description: Using an extension of the well-known evaluation symmetry, a new Cauchy-type identity for Macdonald polynomials is proved. After taking the classical limit this yields a new sl_3 generalisation of the famous Selberg integral. Closely related results obtained in this paper are an sl_3-analogue of the Askey-Habsieger-Kadell q-Selberg integral and an extension of the q-Selberg integral to a transformation between q-integrals of different dimensions.
description: 23 pages
title: Lifetime Modeling of Deficient Bridges in New York
Creators: name: Phippen, Levi
Publisher: name: Utah State University
Year: 2014

description: Given the importance of bridges to a state's economy and strength, and the costs involved in building and maintaining bridges, maximizing their service life is essential. In order to safely extend a bridge's utility as long as possible, an understanding of its lifetime processes is needed. This paper attempts to model the lifetime of a bridge in New York once it has become deficient. Lifetime is defined to be the length of time between deficiency classification and failure. A bridge is considered deficient when certain structural components receive a poor rating in the National Bridge Inventory, which is compiled annually by the Federal Highway Administration. A list of bridge failures is provided by the New York State Department of Transportation.
In 2012 the Federal Highway Administration database showed that 39.5 percent of New York's bridges were deficient. Using analysis of variance and considering a bridge failure to be a random Bernoulli trial, this paper shows that New York's deficient bridges are typically older than their non-deficient counterparts, and that they are also more susceptible to failure. From survival analysis techniques an estimate of the mean time to failure of a deficient bridge is found to be 47.2 years. Finally, a statistical model is created to predict the lifetime of a deficient bridge, while accounting for influential factors such as average daily truck traffic, deck geometry and structural evaluation ratings.
GASKAP-HI Pilot Survey Science I: ASKAP Zoom Observations of HI Emission in the Small Magellanic Cloud
Creators: name: Pingel, N. M.
name: Dempsey, J.
name: McClure-Griffiths, N. M.
name: Dickey, J. M.
name: Jameson, K. E.
name: Arce, H.
name: Anglada, G.
name: Bland-Hawthorn, J.
name: Breen, S. L.
name: Buckland-Willis, F.
name: Clark, S. E.
name: Dawson, J. R.
name: Dénes, H.
name: Di Teodoro, E. M.
name: For, B. -Q.
name: Foster, Tyler J.
name: Gómez, J. F.
name: Imai, H.
name: Joncas, G.
name: Kim, C. -G.
name: Lee, M. -Y.
name: Lynn, C.
name: Leahy, D.
name: Ma, Y. K.
name: Marchal, A.
name: McConnell, D.
name: Miville-Deschênes, M. -A.
name: Moss, V. A.
name: Murray, C. E.
name: Nidever, D.
name: Peek, J.
name: Stanimirović, S.
name: Staveley-Smith, L.
name: Tepper-Garcia, T.
name: Tremblay, C. D.
name: Uscanga, L.
name: van Loon, J. Th.
name: Vázquez-Semadeni, E.
name: Allison, J. R.
name: Anderson, C. S.
name: Ball, Lewis
name: Bell, M.
name: Bock, D. C. -J.
name: Bunton, J.
name: Cooray, F. R.
name: Cornwell, T.
name: Koribalski, B. S.
name: Gupta, N.
name: Hayman, D. B.
name: Harvey-Smith, L.
name: Lee-Waddell, K.
name: Ng, A.
name: Phillips, C. J.
name: Voronkov, M.
name: Westmeier, T.
name: Whiting, M. T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the most sensitive and detailed view of the neutral hydrogen (HI) emission associated with the Small Magellanic Cloud (SMC), through the combination of data from the Australian Square Kilometre Array Pathfinder (ASKAP) and Parkes (Murriyang), as part of the Galactic Australian Square Kilometre Array Pathfinder (GASKAP) pilot survey. These GASKAP-HI pilot observations, for the first time, reveal HI in the SMC on similar physical scales as other important tracers of the interstellar medium, such as molecular gas and dust. The resultant image cube possesses an rms noise level of 1.1 K (1.6 mJy/beam) per 0.98 km s$^{-1}$ spectral channel with an angular resolution of 30$''$ ($\sim$10 pc). We discuss the calibration scheme and the custom imaging pipeline that utilizes a joint deconvolution approach, efficiently distributed across a computing cluster, to accurately recover the emission extending across the entire $\sim$25 deg$^2$ field-of-view. We provide an overview of the data products and characterize several aspects including the noise properties as a function of angular resolution and the represented spatial scales by deriving the global transfer function over the full spectral range. A preliminary spatial power spectrum analysis on individual spectral channels reveals that the power-law nature of the density distribution extends down to scales of 10 pc. We highlight the scientific potential of these data by comparing the properties of an outflowing high velocity cloud with previous ASKAP+Parkes HI test observations.
description: Accepted for publication in PASA, 34 pages, 18 figures, 5 tables
Finsler Black Holes Induced by Noncommutative Anholonomic Distributions in Einstein Gravity
Creators: name: Vacaru, Sergiu I.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study Finsler black holes induced from Einstein gravity as possible effects of quantum spacetime noncommutativity. Such Finsler models are defined by nonholonomic frames not on tangent bundles but on (pseudo) Riemannian manifolds being compatible with standard theories of physics. We focus on noncommutative deformations of Schwarzschild metrics into locally anisotropic stationary ones with spherical/rotoid symmetry. There are derived the conditions when black hole configurations can be extracted from two classes of exact solutions depending on noncommutative parameters. The first class of metrics is defined by nonholonomic deformations of the gravitational vacuum by noncommutative geometry. The second class of such solutions is induced by noncommutative matter fields and/or effective polarizations of cosmological constants.
description: latex 2e, 11pt, 29 pages, v3 accepted to Class. Quant. Grav.
title: Neumomediastino espontáneo y secundario no traumático: signos radiológicos. ¿Como distinguirlos?
Creators: name: Staitie Gali, Ana Miriam
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: CT
subject: Conventional radiography
subject: Thorax
subject: Mediastinum

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Revisar la fisiopatología y causas principales de neumomediastino. Describir los signos clásicos de neumomediastino en la radiografía de tórax y los datos claves en TC para realizar un diagnóstico diferencial entre neumomediastino espontáneoy...
On the Possibility of Learning in Reactive Environments with Arbitrary Dependence
Creators: name: Ryabko, Daniil
name: Hutter, Marcus
Publisher: name: arXiv
Year: 2008
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We address the problem of reinforcement learning in which observations may exhibit an arbitrary form of stochastic dependence on past observations and actions, i.e. environments more general than (PO)MDPs. The task for an agent is to attain the best possible asymptotic reward where the true generating environment is unknown but belongs to a known countable family of environments. We find some sufficient conditions on the class of environments under which an agent exists which attains the best asymptotic reward for any environment in the class. We analyze how tight these conditions are and how they relate to different probabilistic assumptions known in reinforcement learning and related fields, such as Markov Decision Processes and mixing conditions.
description: 20 pages
KAgoshima Galactic Object survey with Nobeyama 45-metre telescope by Mapping in Ammonia lines (KAGONMA): Star formation feedback on dense molecular gas in the W33 complex
Creators: name: Murase, Takeru
name: Handa, Toshihiro
name: Hirata, Yushi
name: Omodaka, Toshihiro
name: Nakano, Makoto
name: Sunada, Kazuyoshi
name: Shimajiri, Yoshito
name: Nishi, Junya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the results of NH3 (1,1), (2,2) and (3,3) and H2O maser simultaneous mapping observations toward the high-mass star-forming region W33 with the Nobeyama 45-m radio telescope. W33 has six dust clumps and one of which, W33 Main, is associated with a compact HII region. To investigate star-forming feedback activity on its surroundings, the spatial distribution of the physical parameters was established. The distribution of the rotational temperature shows a systematic change from west to east in our observed region. The high-temperature region obtained in the region near W33 Main is consistent with interaction between the compact HII region and the periphery molecular gas. The size of the interaction area is estimated to be approximately 1.25 pc. NH3 absorption features are detected toward the centre of the HII region. Interestingly, the absorption feature was detected only in the NH3 (1,1) and (2,2) transitions, with no absorption feature seen in the (3,3) transition. These complex profiles in NH3 are difficult to explain by a simple model and may suggest that the gas distribution around the HII region is highly complicated.
description: 13 pages, 10 figures, Accepted in MNRAS
title: Determinants of Residential Water Conservation: The Case of Salt Lake City Utah
Creators: name: Coleman, Eric A.
Publisher: name: Utah State University
Year: 2004

description: This study evaluates the effectiveness of demand-side water conservation policies in Salt Lake City, Utah for the years 1999 to 2002. We add to the existing residential water demand literature by exploring panel estim ation techniques with disaggregated household level data. Alternative policies used to induce water conservation are di scussed based on estimates of demand schedule parameters. We find that public conservation .campaigns have had negli gible impacts on the city's water use. There have been, however, statistically significant reductions in consumption due to price changes despite minimal price increases. Our findings should enable local and state policymakers to better assess the tradeoffs of alternative conservation programs.
title: Evaluación radiológica de la hipoacusia neurosensorial brusca
Creators: name: Contreras Chacon, Rocio
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Pathology
subject: Education
subject: CT
subject: MR
subject: Neuroradiology brain
subject: Ear / Nose / Throat
subject: Head and neck

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Revisar los hallazgos radiológicos por TC y RM en la hipoacusia neurosensorial brusca,
destacando las principales etiologías en el...
British imperialism and confederation : the case of British Columbia
Creators: name: Reid, David Dougla
Publisher: name: University of British Columbia
Year: 2010

description: This thesis examines the forces behind British Columbia's entry into the Canadian Federation in 1871 by examining the historical and structural circumstances surrounding the relative stages of economic development in the Colony and the British metropolis. The thesis argues that British Columbia's entry into Confederation occured within the total framework of capitalist expansion in the nineteenth century. It occured within the context of British imperialism. The instruments of British imperialism and the character of economic development in the hinterland region of the Pacific Northwest, however, changed as the economic structure of England changed. The road to Confederation for British Columbia—as for Canada—was essentially determined by a shift in the economic structure of England from merchant to industrial capitalism. At a lower level of generality, the thesis concludes that a triangle of trade and capital investment existed between Victoria, San Francisco and London, and through London,to Montreal. This metropolitan network tied the Colony to Great Britain and ultimately to Canada. The ruling class of British Columbia was firmly linked to British capital, and it actively sought, in London, Montreal and Victoria, the achievement of Confederation.
Exactly solvable strings in Minkowski spacetime
Creators: name: Kozaki, Hiroshi
name: Koike, Tatsuhiko
name: Ishihara, Hideki
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the integrability of the equations of motion for the Nambu-Goto strings with a cohomogeneity-one symmetry in Minkowski spacetime. A cohomogeneity-one string has a world surface which is tangent to a Killing vector field. By virtue of the Killing vector, the equations of motion can be reduced to the geodesic equation in the orbit space. Cohomogeneity-one strings are classified into seven classes (Types I to VII). We investigate the integrability of the geodesic equations for all the classes and find that the geodesic equations are integrable. For Types I to VI, the integrability comes from the existence of Killing vectors on the orbit space which are the projections of Killing vectors on Minkowski spacetime. For Type VII, the integrability is related to a projected Killing vector and a nontrivial Killing tensor on the orbit space. We also find that the geodesic equations of all types are exactly solvable, and show the solutions.
description: 11 pages, a reference added, some points clarified
title: A Case Study of Oncological Aphasia: Clinical Profile and Response to Integrated Language Treatment
Creators: name: Anderson, Emma
Publisher: name: Utah State University
Year: 2015

description: Purpose: A large body of research addresses the best methods and practices to treat individuals with aphasia. Much of this research focuses on individuals who have aphasia secondary to stroke. While the most common cause of aphasia is stroke, aphasia can also result from other brain diseases or injury. Relatively little research has focused on oncological aphasia resulting from brain cancer. This research examined aphasia treatment efficacy in an individual with aphasia following removal of a brain tumor. Methods: Standardized testing was used to evaluate the clinical profile of an individual with oncological aphasia. An integrated language treatment approach was implemented with one participant with fluent aphasia using a multiple baseline across behaviors design. CIUs/utterances and percentage of CIUs produced were compared across baseline, treatment and post-treatment phases with four different conversational partners. Treatment effect size was calculated with each conversational partner. Standardized assessments were also administered before and after treatment. Results: Small treatment effect sizes were found with three of the four conversational partners. The participant showed generalization of skills acquired on standardized motor speech, spoken language, memory, and functional communication measures. Discussion: Findings add to evidence in support of integrated treatment approaches and add to the knowledge of the baseline performance of individuals with aphasia due to brain tumor removal. Findings suggest that effects of integrated treatment extend to functional communication.
Chemical Diversity in High-Mass Star Formation
Creators: name: Beuther, H.
name: Zhang, Q.
name: Bergin, E. A.
name: Sridharan, T. K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Massive star formation exhibits an extremely rich chemistry. However, not much evolutionary details are known yet, especially at high spatial resolution. Therefore, we synthesize previously published Submillimeter Array high-spatial-resolution spectral line observations toward four regions of high-mass star formation that are in various evolutionary stages with a range of luminosities. Estimating column densities and comparing the spatially resolved molecular emission allows us to characterize the chemical evolution in more detail. Furthermore, we model the chemical evolution of massive warm molecular cores to be directly compared with the data. The four regions reveal many different characteristics. While some of them, e.g., the detection rate of CH3OH, can be explained by variations of the average gas temperatures, other features are attributed to chemical effects. For example, C34S is observed mainly at the core-edges and not toward their centers because of temperature-selective desorption and successive gas-phase chemistry reactions. Most nitrogen-bearing molecules are only found toward the hot molecular cores and not the earlier evolutionary stages, indicating that the formation and excitation of such complex nitrogen-bearing molecules needs significant heating and time to be fully developed. Furthermore, we discuss the observational difficulties to study massive accretion disks in the young deeply embedded phase of massive star formation. The general potential and limitations of such kind of dataset are discussed, and future directions are outlined. The analysis and modeling of this source sample reveals many interesting features toward a chemical evolutionary sequence. However, it is only an early step, and many observational and theoretical challenges in that field lie ahead.
description: 14 pages, 9 figures, accepted for the Astronomical Journal, a high resolution version can be found at http://www.mpia.de/homes/beuther/papers.html
Almost Commuting Matrices, Localized Wannier Functions, and the Quantum Hall Effect
Creators: name: Hastings, M. B.
name: Loring, T. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: Operator Algebras (math.OA)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: For models of non-interacting fermions moving within sites arranged on a surface in three dimensional space, there can be obstructions to finding localized Wannier functions. We show that such obstructions are $K$-theoretic obstructions to approximating almost commuting, complex-valued matrices by commuting matrices, and we demonstrate numerically the presence of this obstruction for a lattice model of the quantum Hall effect in a spherical geometry. The numerical calculation of the obstruction is straightforward, and does not require translational invariance or introducing a flux torus. We further show that there is a $Z_2$ index obstruction to approximating almost commuting self-dual matrices by exactly commuting self-dual matrices, and present additional conjectures regarding the approximation of almost commuting real and self-dual matrices by exactly commuting real and self-dual matrices. The motivation for considering this problem is the case of physical systems with additional antiunitary symmetries such as time reversal or particle-hole conjugation. Finally, in the case of the sphere--mathematically speaking three almost commuting Hermitians whose sum of square is near the identity--we give the first quantitative result showing this index is the only obstruction to finding commuting approximations. We review the known non-quantitative results for the torus.
description: 35 pages, 2 figures
title: Causas de engrosamiento de la pared intestinal en los niños: Hallazgos radiológicos.
Creators: name: López Farfan, Anyi Milena
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Paediatric

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
•Describir las diferentes patologías que condicionan un engrosamiento de la pared intestinal en niños y sus diferentes hallazgos radiológicos. •Mostrar aquellos signos radiológicos específicos que en un contexto clínico adecuado nos...
Probing the dynamical behavior of dark energy
Creators: name: Cai, Rong-Gen
name: Su, Qiping
name: Zhang, Hong-Bo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate dynamical behavior of the equation of state of dark energy $w_{de}$ by employing the linear-spline method in the region of low redshifts from observational data (SnIa, BAO, CMB and 12 $H(z)$ data). The redshift is binned and $w_{de}$ is approximated by a linear expansion of redshift in each bin. We leave the divided points of redshift bins as free parameters of the model, the best-fitted values of divided points will represent the turning positions of $w_{de}$ where $w_{de}$ changes its evolving direction significantly (if there exist such turnings in our considered region). These turning points are natural divided points of redshift bins, and $w_{de}$ between two nearby divided points can be well approximated by a linear expansion of redshift. We find two turning points of $w_{de}$ in $z\in(0,1.8)$ and one turning point in $z\in (0,0.9)$, and $w_{de}(z)$ could be oscillating around $w=-1$. Moreover, we find that there is a $2σ$ deviation of $w_{de}$ from -1 around $z=0.9$ in both correlated and uncorrelated estimates.
description: Accepted by JCAP; 16 pages, 3 figures
title: Utilidad de la imagen en las infecciones renales: principales hallazgos radiológicos.
Creators: name: Fernandez Ferrando, Maria Jesús
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Ultrasound
subject: CT-High Resolution
subject: CT
subject: Kidney
subject: Education
subject: Abdomen

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Revisar los hallazgos radiológicos de la patología infecciosa renal y sus complicaciones,
exponiendo los casos más representativos recogidos en nuestro servicio y destacando el papel que juega la imagen en su diagnóstico y...
First-principles study on physical properties of a single ZnO monolayer with graphene-like structure
Creators: name: Tu, Z. C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The elastic, piezoelectric, electronic, and optical properties of a single ZnO monolayer (SZOML) with graphene-like structure are investigated from the first-principles calculations. The phonon dispersion curves contain three acoustic and three optical branches. At $Γ$ point, the out-of-plane acoustic mode has an asymptotic behavior $ω(q)=Bq^2$ with $B=1.385 \times 10^{-7}$ m$^2$/s, while two in-plane acoustic modes have sound velocities $2.801$ km/s and $8.095$ km/s; the other three optical modes have frequencies 250 cm$^{-1}$, 566 cm$^{-1}$, and 631 cm$^{-1}$. The elastic and piezoelectric constants are obtained from the relaxed ion model. It is found that the SZOML is much softer than graphene, while it is a piezoelectric material. The electronic band gap is 3.576 eV, which implies that the SZOML is a wide band gap semiconductor. Many peaks exist in the linear optical spectra, where the first peak at 3.58 eV corresponds to the band gap of SZOML.
description: 5 journal pages, four figures
Euclidean Path Integral and Higher-Derivative Theories
Creators: name: Andrzejewski, Krzysztof
name: Gonera, Joanna
name: Maslanka, Pawel
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the Euclidean path integral approach to higher-derivative theories proposed by Hawking and Hertog (Phys. Rev. D65 (2002), 103515). The Pais-Uhlenbeck oscillator is studied in some detail. The operator algebra is reconstructed and the structure of the space of states revealed. It is shown that the quantum theory results from quantizing the classical complex dynamics in which the original dynamics is consistently immersed. The field-theoretical counterpart of Pais-Uhlenbeck oscillator is also considered.
description: 14 pages; no figures;the paper considerably extended; field-theoretical part added
Additional file 1 of Can the organization of health resource integration be analyzed in terms of the current state of unmet demand for health services? take the health needs of the elderly in a place in zhejiang province, china, as an example
Creators: name: Gao, Li
name: Wang, Bing
name: Yang, Xiaohong
name: Pan, Yongliang
name: Feng, Wenming
name: Pei, Xuedan
name: Fan, Yanfang
name: Liu, Bing
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Computational Biology

description: Additional file 1.
title: An Exploration of the Use of Functional Behavior Assessment and Noncontingent Reinforcement on Disruptive Behavior in Middle School General Education Classrooms
Creators: name: Andreasen, Melody C.
Publisher: name: Utah State University
Year: 2015

description: Teachers sometimes experience problems with disruptive behavior in their classrooms. These aberrant and socially mediated behaviors can be difficult for teachers to manage without the proper research-based skills and training. This project explored the effects of training general education classroom teachers to conduct a functional behavior assessment and deliver noncontingent reinforcement (NCR) for disruptive classroom behavior(s). Participants included four middle school general education teachers and four students who have been identified by each teacher as exhibiting disruptive behavior(s). Procedures included four hrs of teacher training on conducting functional behavior assessments and delivering NCR followed by a post-training questionnaire and rubric based role play to determine the readiness of the teacher to proceed with implementation. Pre-intervention data on the target students was collected by the researcher while the teacher conducted class as usual. Next, the intervention was initiated and data were 4 collected by the researcher and an independent observer trained by the researcher to determine the impact of the intervention on student behavior. The NCR intervention produced decreased disruptive behavior(s) for all student participants. The results obtained indicate training teachers to conduct functional behavior assessments and implement NCR interventions for reducing disruptive behavior(s) has potential to be a viable tool.