cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Keck spectroscopy and Spitzer Space Telescope analysis of the outer disk of the Triangulum Spiral Galaxy M33
Creators: name: Block, David L.
name: Combes, Francoise
name: Puerari, Ivanio
name: Freeman, Kenneth C.
name: Stockton, Alan
name: Canalizo, Gabriela
name: Jarrett, Thomas H.
name: Groess, Robert
name: Worthey, Guy
name: Gehrz, Robert D.
name: Woodward, Charles E.
name: Polomski, Elisha F.
name: Fazio, Giovanni G.
name: --
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In an earlier study of the spiral galaxy M33, we photometrically identified arcs or outer spiral arms of intermediate age (0.6 Gyr - 2 Gyr) carbon stars precisely at the commencement of the HI-warp. Stars in the arcs were unresolved, but were likely thermally-pulsing asymptotic giant branch carbon stars. Here we present Keck I spectroscopy of seven intrinsically bright and red target stars in the outer, northern arc in M33. The target stars have estimated visual magnitudes as faint as V \sim 25 mag. Absorption bands of CN are seen in all seven spectra reported here, confirming their carbon star status. In addition, we present Keck II spectra of a small area 0.5 degree away from the centre of M33; the target stars there are also identified as carbon stars. We also study the non-stellar PAH dust morphology of M33 secured using IRAC on board the Spitzer Space Telescope. The Spitzer 8 micron image attests to a change of spiral phase at the start of the HI warp. The Keck spectra confirm that carbon stars may safely be identified on the basis of their red J-K_s colours in the outer, low metallicity disk of M33. We propose that the enhanced number of carbon stars in the outer arms are an indicator of recent star formation, fueled by gas accretion from the HI-warp reservoir.
description: 9 pages, 5 figures, accepted in A&A
Nonlinear growth in modified gravity theories of dark energy
Creators: name: Laszlo, Istvan
name: Bean, Rachel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Theoretical differences in the growth of structure offer the possibility that we might distinguish between modified gravity theories of dark energy and \LambdaCDM. A significant impediment to applying current and prospective large scale galaxy and weak lensing surveys to this problem is that, while the mildly nonlinear regime is important, there is a lack of numerical simulations of nonlinear growth in modified gravity theories. A major question exists as to whether existing analytical fits, created using simulations of standard gravity, can be confidently applied. In this paper we address this, presenting results of N-body simulations of a variety of models where gravity is altered including the Dvali, Gabadadze and Porrati model. We consider modifications that alter the Poisson equation and also consider the presence of anisotropic shear stress that alters how particles respond to the gravitational potential gradient. We establish how well analytical fits of the matter power spectrum by Peacock and Dodds and Smith et al. are able to predict the nonlinear growth found in the simulations from z=50 up to today, and also consider implications for the weak lensing convergence power spectrum. We find that the analytical fits provide good agreement with the simulations, being within 1σof the simulation results for cases with and without anisotropic stress and for scale-dependent and independent modifications of the Poisson equation. No strong preference for either analytical fit is found.
description: 14 pages, 11 figures, updated to version published in Phys. Rev. D77, including additional discussion and references
Indications of stellar coronal mass ejections through coronal dimmings
Creators: name: Veronig, Astrid M.
name: Odert, Petra
name: Leitzinger, Martin
name: Dissauer, Karin
name: Fleck, Nikolaus C.
name: Hudson, Hugh S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Coronal mass ejections (CMEs) are huge expulsions of magnetized matter from the Sun and stars, traversing space with speeds of millions of kilometers per hour. Solar CMEs can cause severe space weather disturbances and consumer power outages on Earth, whereas stellar CMEs may even pose a hazard to the habitability of exoplanets. While CMEs ejected by our Sun can be directly imaged by white-light coronagraphs, for stars this is not possible. So far, only a few candidates for stellar CME detections are reported. Here we demonstrate a different approach, based on sudden dimmings in the extreme-ultraviolet (EUV) and X-ray emission caused by the CME mass loss. We report dimming detections associated with flares on cool stars, indicative of stellar CMEs and benchmarked by Sun-as-a-star EUV measurements. This study paves the way for comprehensive detections and characterizations of CMEs on stars, important for planetary habitability and stellar evolution.
Identification of Dynamical Systems using Symbolic Regression
Creators: name: Kronberger, Gabriel
name: Kammerer, Lukas
name: Kommenda, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: We describe a method for the identification of models for dynamical systems from observational data. The method is based on the concept of symbolic regression and uses genetic programming to evolve a system of ordinary differential equations (ODE). The novelty is that we add a step of gradient-based optimization of the ODE parameters. For this we calculate the sensitivities of the solution to the initial value problem (IVP) using automatic differentiation. The proposed approach is tested on a set of 19 problem instances taken from the literature which includes datasets from simulated systems as well as datasets captured from mechanical systems. We find that gradient-based optimization of parameters improves predictive accuracy of the models. The best results are obtained when we first fit the individual equations to the numeric differences and then subsequently fine-tune the identified parameter values by fitting the IVP solution to the observed variable values.
description: The final authenticated publication is available online at https://doi.org/10.1007/978-3-030-45093-9
Dynamical Tides in Eccentric Binaries Containing Massive Main-Sequence Stars: Analytical Expressions
Creators: name: Su, Yubo
name: Lai, Dong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Tidal evolution of eccentric binary systems containing at least one massive main-sequence (MS) star plays an important role in the formation scenarios of merging compact-object binaries. The dominant dissipation mechanism in such systems involves tidal excitation of outgoing internal gravity waves at the convective-radiative boundary and dissipation of the waves at the stellar envelope/surface. We have derived analytical expressions for the tidal torque and tidal energy transfer rate in such binaries for arbitrary orbital eccentricities and stellar rotation rates. These expressions can be used to study the spin and orbital evolution of eccentric binaries containing massive MS stars, such as the progenitors of merging neutron star binaries. Applying our results to the PSR J0045-7319 system, which has a massive B-star companion and an observed, rapidly decaying orbit, we find that for the standard radius of convective core based on non-rotating stellar models, the B-star must have a significant retrograde and differential rotation in order to explain the observed orbital decay rate. Alternatively, we suggest that the convective core may be larger as a result of rapid stellar rotation and/or mass transfer to the B-star in the recent past during the post-MS evolution of the pulsar progenitor.
description: 10 pages, 8 figures, submitted to MNRAS
More Rings to rule them all : Fragmentation, 4D/5D and Split-Spectral Flows
Creators: name: Arsiwalla, Xerxes D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this note we set-up an explicit 5D construction of AdS-fragmentation, whereby a single black ring splits-up into a multi-black ring configuration. Furthermore it is seen that these fragmented rings are equivalent to a direct 5D lift of 4D multi-center black holes. Along the way we also determine the 4D/5D transformations relevant for multi-center charges. It is seen that the physical charges involved in black ring fragmentation are Page charges arising due to 5D Chern-Simons terms. As an application of these methods, we reproduce the total angular momentum of concentric black rings, originally due to Gauntlett and Gutowski. Finally we provide a geometric interpretation of fragmented black rings using the idea of split-spectral flows, which seeks to study charge shifts of a given black ring due to fluxes generated in a multi-ring background.
description: 32 pages, 2 figures
Quantifying the non-Gaussian character of a quantum state by quantum relative entropy
Creators: name: Genoni, Marco G.
name: Paris, Matteo G. A.
name: Banaszek, Konrad
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a novel measure to quantify the non-Gaussian character of a quantum state: the quantum relative entropy between the state under examination and a reference Gaussian state. We analyze in details the properties of our measure and illustrate its relationships with relevant quantities in quantum information as the Holevo bound and the conditional entropy; in particular a necessary condition for the Gaussian character of a quantum channel is also derived. The evolution of non-Gaussianity (nonG) is analyzedfor quantum states undergoing conditional Gaussification towards twin-beam and de-Gaussification driven by Kerr interaction. Our analysis allows to assess nonG as a resource for quantum information and, in turn, to evaluate the performances of Gaussification and de-Gaussification protocols.
description: 4 pages, 2 figures. v2: Slightly revised version and reference added. v3: minor corrections, to appear on Phys. Rev. A (Rapid Communication). v4: published version
Quantum frustration of dissipation by a spin bath
Creators: name: Rao, D. D. Bhaktavatsala
name: Kohler, Heiner
name: Sols, Fernando
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the evolution of a central spin coupled to a spin bath without internal dynamics. We compare the cases where the bath couples to one or two components of the spin. It is found that the central spin dynamics is enhanced in the latter case, which may be interpreted as a frustration of dissipation. However, the quantum purity of the spin decays fast in both scenarios. We conclude that symmetric coupling of the bath to two orthogonal components of the spin inhibits dissipation but not decoherence.
description: 17 pages, 6 figures
Toroidal Tidal Effects in Microstate Geometries
Creators: name: Ceplak, Nejc
name: Hampton, Shaun
name: Li, Yixuan
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Tidal effects in capped geometries computed in previous literature display no dynamics along internal (toroidal) directions. However, the dual CFT picture suggests otherwise. To resolve this tension, we consider a set of infalling null geodesics in a family of black hole microstate geometries with a smooth cap at the bottom of a long BTZ-like throat. Using the Penrose limit, we show that a string following one of these geodesics feels tidal stresses along all spatial directions, including internal toroidal directions. We find that the tidal effects along the internal directions are of the same order of magnitude as those along other, non-internal, directions. Furthermore, these tidal effects oscillate as a function of the distance from the cap -- as a string falls down the throat it alternately experiences compression and stretching. We explain some physical properties of this oscillation and comment on the dual CFT interpretation.
description: 18 pages, 5 figures. V2: Minor modifications, accepted in JHEP
การศึกษาพฤติกรรมการบริโภคอาหารของแม่บ้านค่ายบุรฉัตรสังกัดกรมทหารช่าง จังหวัดราชบุรี
Creators: name: เนนิสา  ไชยบุระ
Publisher: name: มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร
Year: 2014
Subjects: ความรู้ทางโภชนาการ, พฤติกรรมการบริโภคอาหาร

description: 1, 8, วารสารวิชาการและวิจัย มทร.พระนคร
Reading the Racial Politics of Guns in America Teaching Guide
Creators: name: Sufian, Sandra
name: Metzl, Jonathan
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: subject: 160803 Race and Ethnic Relations
subject: FOS: Sociology
subject: 200299 Cultural Studies not elsewhere classified
subject: FOS: Other humanities
subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences

description: This Health Humanities Portrait, Reading the Racial Politics of Guns in America, explores the contested politics of American firearms. It addresses the complex tensions of race relations, health and injury, and the lethal consequences of gun ownership. The portrait allows students to think critically about the various justifications for gun ownership, the role stereotypes play in those justifications, and the larger implications gun policies have on public health and individual health.
Reading the Racial Politics of Guns in America Reading List
Creators: name: Metzl, Jonathan
name: Sufian, Sandra
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: subject: 160803 Race and Ethnic Relations
subject: FOS: Sociology
subject: 200299 Cultural Studies not elsewhere classified
subject: FOS: Other humanities
subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences

description: The Health Humanities Portrait, Reading the Racial Politics of Guns in America, explores the contested politics of American firearms. It addresses the complex tensions of race relations, health and injury, and the lethal consequences of gun ownership. The portrait allows students to think critically about the various justifications for gun ownership, the role stereotypes play in those justifications, and the larger implications gun policies have on public health and individual health.
Rural Populations: Using Performance Studies to Understand Treatment and Access to Care First-Person Narrative Interview Transcript
Creators: name: Sufian, Sandra
name: Case, Gretchen
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: subject: 110305 Emergency Medicine
subject: FOS: Clinical medicine
subject: 160804 Rural Sociology
subject: FOS: Sociology
subject: 220106 Medical Ethics
subject: FOS: Health sciences
subject: 190404 Drama, Theatre and Performance Studies
subject: FOS: Arts (arts, history of arts, performing arts, music)
subject: 111717 Primary Health Care

description: The Health Humanities Portrait, Rural Populations: Using Performance Studies to Understand Treatment and Access to Care, identifies the challenges and differences related to privacy and geographical access in the delivery of health care in a rural or remote setting.
A CRITICAL ANALYSIS OF POVERTY, INEQUALITY, AND UNEMPLOYMENT TRENDS IN NIGERIA
Creators: name: Chinedu, Emmanuel Okafor
Publisher: name: AYDEN JOURNAL
Year: 2024
Subjects: Poverty, Inequality, Unemployment

description: This study explores the complex interplay between poverty, inequality, and unemployment in Nigeria, focusing on the relationships among these three crucial socio-economic factors. Persistent issues of poverty, widespread inequality, and high unemployment rates significantly impede Nigeria's development, creating a cycle that reinforces these challenges. The research employs the Granger causality test to examine the directional influences between these variables, providing empirical evidence of their interconnections. The Granger causality test results indicate a significant bidirectional causality between poverty and unemployment. This suggests that not only does high unemployment increase poverty levels, but poverty also perpetuates unemployment by limiting access to education and skills development. Additionally, the analysis reveals a unidirectional causality from inequality to unemployment, indicating that growing income inequality exacerbates unemployment by restricting economic opportunities and access to resources for disadvantaged groups. Conversely, the causality from unemployment to inequality is less pronounced, suggesting that while unemployment does contribute to inequality, its impact is moderated by other factors such as policy measures and social support systems. The findings highlight the need for integrated policy approaches that address poverty, inequality, and unemployment simultaneously. Focusing solely on reducing unemployment may be insufficient if it does not also address the root causes of poverty and inequality, and vice versa. The study concludes that a comprehensive strategy, informed by the bidirectional relationships among these variables, is crucial for breaking the cycle and promoting sustainable development in Nigeria. By using insights from the Granger causality test, policymakers can better design interventions to achieve more equitable and inclusive economic growth.
Rural Populations: Using Performance Studies to Understand Treatment and Access to Care Interview Audio Clips
Creators: name: Sufian, Sandra
name: Case, Gretchen
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: subject: 110305 Emergency Medicine
subject: FOS: Clinical medicine
subject: 160804 Rural Sociology
subject: FOS: Sociology
subject: 220106 Medical Ethics
subject: FOS: Health sciences
subject: 190404 Drama, Theatre and Performance Studies
subject: FOS: Arts (arts, history of arts, performing arts, music)

description: The Health Humanities Portrait, Rural Populations: Using Performance Studies to Understand Treatment and Access to Care, identifies the challenges and differences related to privacy and geographical access in the delivery of health care in a rural or remote setting.
These interview audio clips can be used when teaching this portrait.
Linearizing torsion classes in the Picard group of algebraic curves over finite fields
Creators: name: Couveignes, Jean-Marc
Publisher: name: arXiv
Year: 2007
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 14H40, 11G20, 11F11, 11Y40

description: We address the problem of computing in the group of $\ell^k$-torsion rational points of the jacobian variety of algebraic curves over finite fields, with a view toward computing modular representations.
description: To appear in Journal of Algebra
The angular momentum structure of cosmic ray driven galactic outflows triggered by stream accretion
Creators: name: Peschken, Nicolas
name: Hanasz, Michał
name: Naab, Thorsten
name: Wóltański, Dominik
name: Gawryszczak, Artur
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the impact of gas accretion in streams on the evolution of disc galaxies, using magneto-hydrodynamic simulations including advection and anisotropic diffusion of cosmic rays generated by supernovae as the only source of feedback. Stream accretion has been suggested as an important galaxy growth mechanism in cosmological simulations and we vary their orientation and angular momentum in idealised setups. We find that accretion streams trigger the formation of galactic rings and enhanced star formation. The star formation rates and consequently the cosmic ray driven outflow rates are higher for low angular momentum accretion streams, which also result in more compact, lower angular momentum discs. The cosmic ray generated outflows show a characteristic structure. At low outflow velocities (< 50 km/s) the angular momentum distribution is similar to the disk and the gas is in a fountain flow. Gas at high outflow velocities (> 200 km/s), penetrating deep into the halo, has close to zero angular momentum, and originates from the centre of the galaxies. As the mass loading factors of the cosmic ray driven outflows are of order unity and higher, we conclude that this process is important for the removal of low angular momentum gas from evolving disk galaxies and the transport of, potentially metal enriched, material from galactic centres far into the galactic haloes.
description: 14 pages, 18 figures, accepted for publication in MNRAS
Design and realization of Ohmic and Schottky interfaces for oxide electronics
Creators: name: Zhang, Jie
name: Pai, Yun-Yi
name: Lapano, Jason
name: Mazza, Alessandro R.
name: Lee, Ho Nyung
name: Moore, Rob
name: Lawrie, Benjamin J.
name: Ward, T. Zac
name: Eres, Gyula
name: Cooper, Valentino R.
name: Brahlek, Matthew
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Understanding band alignment and charge transfer at complex oxide interfaces is critical to tailoring and utilizing their diverse functionality. Towards this goal, we design and experimentally validate both Ohmic- and Schottky-like charge transfers at oxide/oxide semiconductor/metal interfaces. We utilize a method for predicting band alignment and charge transfer in ABO3 perovskites, where previously established rules for simple semiconductors fail. The prototypical systems chosen are the rare class of oxide metals, SrBO3 with B=V-Ta, when interfaced with the multifaceted semiconducting oxide, SrTiO3. For B=Nb and Ta, we confirm that a large accumulation of charge occurs in SrTiO3 due to higher energy Nb and Ta d-states relative to Ti; this gives rise to a high mobility metallic interface, which is an ideal epitaxial oxide/oxide Ohmic contact. On the other hand, for B=V, there is no charge transfer into the SrTiO3 interface, which serves as a highly conductive epitaxial gate metal. Going beyond these specific cases, this work opens the door to integrating the vast phenomena of ABO3 perovskites into a wide range of practical devices.
description: Accepted in Small Science
Atomic structure calculations of helium with correlated exponential functions
Creators: name: Yerokhin, Vladimir A.
name: Patkos, Vojtech
name: Pachucki, Krzysztof
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The technique of quantum electrodynamics (QED) calculations of energy levels in the helium atom is reviewed. The calculations start with the solution of the Schrödinger equation and account for relativistic and QED effects by perturbation expansion in the fine-structure constant $α$. The nonrelativistic wave function is represented as a linear combination of basis functions depending on all three interparticle radial distances, $r_1$, $r_2$ and $r = |\vec{r}_1-\vec{r}_2|$. The choice of the exponential basis functions of the form $\exp(-αr_1 -βr_2 -γr)$ allows us to construct an accurate and compact representation of the nonrelativistic wave function and to efficiently compute matrix elements of numerous singular operators representing relativistic and QED effects. Calculations of the leading QED effects of order $α^5m$ (where $m$ is the electron mass) are complemented with the systematic treatment of higher-order $α^6m$ and $α^7m$ QED effects.
วิถีชีวิตและความมั่นคงของอาหารภาคใต้
Creators: name: ทรงสิริ  วิชิรานนท์
name: พจนีย์  บุญนา
name: จงทิพย์ อธิมุติสรรค์
Publisher: name: มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร
Year: 2014
Subjects: วิถีชีวิต, ความมั่นคงของอาหาร, ภาคใต้

description: 1, 8, วารสารวิชาการและวิจัย มทร.พระนคร
Synchronization in the presence of time delays and inertia: Stability criteria
Creators: name: Prousalis, Dimitrios
name: Wetzel, Lucas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Linear stability of synchronized states in networks of delay-coupled oscillators depends on the type of interaction, the network and oscillator properties. For inert oscillator response, found ubiquitously from biology to engineering, states with time-dependent frequencies can arise. These generate side bands in the frequency spectrum or lead to chaotic dynamics. Stability analysis is difficult due to delay-induced multistability and has only been available via numerical approaches. We derive criteria and conditions that enable fast and robust analytical linear stability analysis based on the system parameters. These apply to arbitrary network topologies, identical oscillators and delays.
description: main: 5 pages, 6 figures, supplementary: 3 pages, 4 figures
MPEC 2025-G54 : 2025 GH
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2025
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2025 GH

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Economic development and the structure of cross-technology interactions
Creators: name: Bondarev, Anton
name: Krysiak, Frank C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Economics (econ.GN)
subject: FOS: Economics and business

description: Most explanations of economic growth are based on knowledge spillovers, where the development of some technologies facilitates the enhancement of others. Empirical studies show that these spillovers can have a heterogeneous and rather complex structure. But, so far, little attention has been paid to the consequences of different structures of such cross-technology interactions: Is economic development more easily fostered by homogenous or heterogeneous interactions, by uni- or bidirectional spillovers? Using a detailed description of an r&d sector with cross-technology interactions embedded in a simple growth model, we analyse how the structure of spillovers influences growth prospects and growth patterns. We show that some type of interactions (e.g., one-way interactions) cannot induce exponential growth, whereas other structures can. Furthermore, depending on the structure of interactions, all or only some technologies will contribute to growth in the long run. Finally, some spillover structures can lead to complex growth patterns, such as technology transitions, where, over time, different technology clusters are the main engine of growth.
Life Without Shelter in the US: Veterans and Homelessness PowerPoint Presentation
Creators: name: Sufian, Sandra
name: Gambino, Matthew
name: Milbrath, Gwyneth
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: subject: History
subject: 220205 History and Philosophy of Medicine
subject: FOS: Other medical sciences

description: The goal of this Health Humanities Portrait--Life Without Shelter in the United States: Veterans and Homelessness-- is to understand both the specificity and the commonality of being homeless as a veteran. Veterans have access to care through the Veterans Affairs (VA) medical system and are an object of historical reverence within American society. In many ways, however, the causes and experiences of their homelessness do not differ substantially from those of the general homeless population. This portrait captures historically significant issues relevant to our broad social theme, including the meanings of homelessness; the indignity of reliance on inadequate or poorly organized social services; the role of addiction and mental health concerns; housing instability and discrimination; work and the labor market; stereotypes and the stigma associated with homelessness; and the social obligation to veterans.
Thermoelectric response as a tool to observe electrocaloric effect in a thin conducting ferroelectric SnSe flake
Creators: name: Orlova, N. N.
name: Timonina, A. V.
name: Kolesnikov, N. N.
name: Deviatov, E. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We experimentally investigate thermoelectric response of a 100~nm thick SnSe single crystal flake under the current-induced dc electric field. Thermoelectric response appears as a second-harmonic transverse voltage $V_{xy}^{2ω}$, which reflects temperature gradient across the sample due to the Joule heating by harmonic ac excitation current $I_{ac}$. In addition to strongly non-monotonous dependence $V_{xy}^{2ω}$, we observe that dc field direction controls the sign of the temperature gradient in the SnSe flake. We provide arguments, that electrocaloric effect is the mostly probable reason for the results obtained. Thus, our experiment can be understood as demonstration of the possibility to induce electrocaloric effect by in-plane electric field in conducting ferroelectric crystals and to detect it by thermoelectric response.
Fire former for kausalitet – en empirisk undersøgelse af fordi-sætninger i dansk talesprog
Creators: name: Gregersen, Sune
Publisher: name: University of Copenhagen
Year: 2014
Subjects: causal clauses
causality
subordination
word order
Danish

description: Abstract: This thesis is an empirical study of causal clauses headed by the conjunction fordi ‘because’ in spoken Danish. Such clauses may have either of two word order patterns, here termed verb-second (V2) and verb-third (V3), and they may serve a number of different semantic functions. The study examines the frequency of these word order patterns in fordi clauses in Danish and the possibility of a correspon- dence between the word order of the fordi clause and its semantic relation to the matrix clause. The data are five transcripts of debates in the national parliament of Denmark.

After a brief introduction to the subject matter, I move on to discuss a number of theories about causal clauses, in particular the ones put forward by Sweetser (1990) and Hengeveld (1996), and conclude that it is possible to distinguish between four different semantic types: physical, intentional, epistemic, and illocutionary causal clauses. I then discuss four studies of Danish causal clauses, which differ as to what is regarded the deciding factor of the two word order patterns.

In the following section, I describe my method and discuss some problems regarding the unambiguous identification of the semantic types in a pilot study consisting of one transcript from the parliament. I then go through my main study. The main findings of the study are: The V2 pattern is more frequent in fordi clauses than the V3 pattern. Fordi clauses occur much more frequently with non- presupposed matrix clauses than with presupposed ones. There is no one-to-one correspondence between the word order of the fordi clause on the one hand and the semantic type of the fordi clause on the other; the same applies to whether the matrix clause contains presupposed information or not. The conjunction fordi can introduce interrogative clauses.

I then argue that fordi is a highly polyfunctional conjunction as it may occur with either V2 or V3, with either presupposed and non-presupposed matrix clauses, with all four of the semantic types, and with a following interrogative clause. The last point I take as an indication that fordi is not always a subordinating conjunction, but can be a coordinator as well. Finally, I discuss the relation between causality and relevance and argue that this may serve as an explanation for some of the problems connected to the identification of the semantic type of the causal clauses.
description: MA thesis on causal clauses in Modern Danish
Quest for the upcoming periastron passage of an episodic dust maker and particle accelerating colliding wind binary: WR 125
Creators: name: Arora, Bharti
name: Pandey, J. C.
name: De Becker, M.
name: Pandey, S. B.
name: Chakradhari, N. K.
name: Sharma, Saurabh
name: Kumar, Brijesh
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have carried out a long term infrared and X-ray investigation of the colliding wind binary WR 125 (WC7+O9III). The source was monitored using AstroSat-Soft X-ray Telescope and TIRCAM2 mounted at the back of 3.6 m Devasthal Optical Telescope. WR 125 appeared brighter in near infra-red K-band during the years 2017-2021 which is attributed to another episode of dust formation similar to the one reported during the likely periastron passage at the beginning of the 1990s. This is further supported by enhanced emission observed in W1 and W2 bands of WISE from 2018-19. By combining archival X-ray data sets with our new measurements, long-term variations have been noticed. The source reaches a lower emission state in June 2020 (close to the recent infrared maximum) which could be due to enhanced absorption of X-rays produced in the colliding wind region by the WC stellar wind close to the periastron in an eccentric orbit. The time interval between the previous and latest X-ray low states may indicate an orbital period of 28-29 years, in fair agreement with the recurrence time of episodic dust production. We also discuss published radio measurements in the context of a common picture based on a long period binary scenario. These results allow us to draw relevant guidelines for future multi-wavelength observations of WR 125.
description: Accepted for publication in The Astronomical Journal (AJ)
Spatially Resolved Properties of Supernova Host Galaxies in SDSS-IV MaNGA
Creators: name: Zhang, Hongxuan
name: Chen, Yanmei
name: Shi, Yong
name: Bao, Min
name: Yu, Xiaoling
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We crossmatch galaxies from Mapping Nearby Galaxies at Apache Point Observatory with the Open Supernova Catalog, obtaining a total of 132 SNe within MaNGA bundle. These 132 SNe can be classified into 67 Type Ia and 65 Type CC. We study the global and local properties of supernova host galaxies statistically. Type Ia SNe are distributed in both star-forming galaxies and quiescent galaxies, while Type CC SNe are all distributed along the star-forming main sequence. As the stellar mass increases, the Type Ia/CC number ratio increases. We find: (1) there is no obvious difference in the interaction possibilities and environments between Type Ia SN hosts and a control sample of galaxies with similar stellar mass and SFR distributions, except that Type Ia SNe tend to appear in galaxies which are more bulge-dominated than their controls. For Type CC SNe, there is no difference between their hosts and the control galaxies in galaxy morphology, interaction possibilities as well as environments; (2) the SN locations have smaller velocity dispersion, lower metallicity, and younger stellar population than galaxy centers. This is a natural result of radius gradients of all these parameters. The SN location and the its symmetrical position relative to the galaxy center, as well as regions with similar effective radii have very similar [Mg/Fe], gas-phase metallicity, gas velocity dispersion and stellar population age.
description: 16 pages, 11 figures, Accepted for publication in Research in Astronomy and Astrophysics
Hadronic Molecules and the f0(980)/a0(980)
Creators: name: Branz, Tanja
name: Gutsche, Thomas
name: Lyubovitskij, Valery E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss a possible interpretation of the f0(980) and a0(980) mesons as hadronic molecules - bound states of K and Kbar mesons. Using a phenomenological Lagrangian approach we calculate the strong f0(980) to pi pi and a0(980) to pi eta as well as the electromagnetic f0(980) to gamma gamma and a0(980) to gamma gamma decays. The covariant and gauge invariant model, which also allows for finite size effects of the hadronic molecule, delivers results in good agreement with available data and results of other theoretical approaches.
description: Talk given at the workshop SCADRON 70 on 'Scalar Mesons and Related Topics', 11-16 February 2008, Lisbon. 5 pages, 3 figures
Generalized uncertainty principle in Bianchi type I quantum cosmology
Creators: name: Vakili, B.
name: Sepangi, H. R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a quantum Bianchi type I model in which the dynamical variables of the corresponding minisuperspace obey the generalized Heisenberg algebra. Such a generalized uncertainty principle has its origin in the existence of a minimal length suggested by quantum gravity and sting theory. We present approximate analytical solutions to the corresponding Wheeler-DeWitt equation in the limit where the scale factor of the universe is small and compare the results with the standard commutative and noncommutative quantum cosmology. Similarities and differences of these solutions are also discussed.
description: 8 pages, 3 figures, to appear in PLB
Measurements of Branching Fractions for B+ -> rho+ gamma, B0 -> rho0 gamma, and B0 -> omega gamma
Creators: name: The BABAR Collaboration
name: Aubert, B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present branching fraction measurements for the radiative decays B+ -> rho+ gamma, B0 -> rho0 gamma, and B0 -> omega gamma. The analysis is based on a data sample of 465 million BBbar events collected with the BaBar detector at the PEP-II asymmetric B factory. We find BR(B+ -> rho+ gamma) = (1.20 +0.42 -0.37 +/-0.20) x 10^-6, BR(B0 -> rho0 gamma) = (0.97 +0.24 -0.22 +/-0.06) x 10^-6, and a 90% C.L. upper limit BR(B0 -> omega gamma) < 0.9 x 10^-6, where the first error is statistical and the second is systematic. We also measure the isospin-violating quantities Gamma(B+ -> rho+ gamma) / 2Gamma(B0 -> rho0 gamma) - 1 = -0.43 +0.25 -0.22 +/-0.10.
description: 11 pages, 9 postscript figures, submitted to Phys. Rev. D
The effect of reionization on the CMB-density correlation
Creators: name: Giannantonio, Tommaso
name: Crittenden, Robert
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we show how the rescattering of CMB photons after cosmic reionization can give a significant linear contribution to the temperature-matter cross-correlation measurements. These anisotropies, which arise via a late time Doppler effect, are on scales much larger than the typical scale of non-linear effects at reionization; they can contribute to degree scale cross-correlations and could affect the interpretation of similar correlations resulting from the integrated Sachs-Wolfe effect. While expected to be small at low redshifts, these correlations can be large given a probe of the density at high redshift, and so could be a useful probe of the cosmic reionization history.
description: 8 pages, 8 figures
A syntactic sketch of Wangerooge Frisian
Creators: name: Gregersen, Sune
Publisher: name: Kiel University
Year: 2023
Subjects: Frisian
East Frisian
grammar
syntax

description: The working paper presents a preliminary sketch of the syntax of Wangerooge Frisian, a Germanic language spoken until the early 20th century on the German Wadden Sea island Wangerooge. The syntactic sketch is intended as a first step towards a more comprehensive grammatical description of the language.
description: The research presented in this working paper was supported by the Carlsberg Foundation (grant no. CF21-0502).
Naturally Flavorful Supersymmetry at the LHC
Creators: name: Nomura, Yasunori
name: Stolarski, Daniel
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The suppression of flavor and CP violation in supersymmetric theories may be due to the mechanism responsible for the structure of the Yukawa couplings. We study model independently the compatibility between low energy flavor and CP constraints and observability of superparticles at the LHC, assuming a generic correlation between the Yukawa couplings and the supersymmetry breaking parameters. We find that the superpotential operators that generate scalar trilinear interactions are generically problematic. We discuss several ways in which this tension is naturally avoided. In particular, we focus on several frameworks in which the dangerous operators are naturally absent. These frameworks can be combined with many theories of flavor, including those with (flat or warped) extra dimensions, strong dynamics, or flavor symmetries. We show that the resulting theories can avoid all the low energy constraints while keeping the superparticles light. The intergenerational mass splittings among the sfermions can reflect the structure of the underlying flavor theory, and can be large enough to be measurable at the LHC. Detailed observations of the superparticle spectrum may thus provide new handles on the origin of the flavor structure of the standard model.
description: 39 pages, 3 figures
New Superstring Isometries and Hidden Dimensions
Creators: name: Polyakov, Dimitri
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We explore the hierarchy of hidden space-time symmetries of noncritical strings in RNS formalism, realized nonlinearly. Under these symmetry transformations the variation of the matter part of the RNS action is cancelled by that of the ghost part. These symmetries, referred to as the $α$-symmetries, are induced by special space-time generators, violating the equivalence of ghost pictures. We classify the $α$-symmetry generators in terms of superconformal ghost cohomologies $H_{n}\sim{H_{-n-2}}(n\geq{0})$ and associate these generators with a chain of hidden space-time dimensions, with each ghost cohomology $H_{n}\sim{H_{-n-2}}$ ``contributing'' an extra dimension. Namely, we show that each ghost cohomology $H_{n}\sim{H_{-n-2}}$ of non-critical superstring theory in $d$-dimensions contains $d+n+1$ $α$-symmetry generators and the generators from $H_{k}\sim{H_{-k-2}},1\leq{k}\leq{n}$, combined together, extend the space-time isometry group from the naive $SO(d,2)$ to $SO(d+n,2)$. In the simplest case of $n=1$ the $α$-generators are identified with the extra symmetries of the $2T$-physics formalism, also known to originate from a hidden space-time dimension.
description: 26 pages typos corrected
Trait Citations Supp Table 3 from Tropical mammal functional diversity increases with productivity but decreases with anthropogenic disturbance
Creators: name: Gorczynski, Daniel
name: Hsieh, Chia
name: Jadelys Tonos Luciano
name: Ahumada, Jorge
name: Espinosa, Santiago
name: Steig Johnson
name: Rovero, Francesco
name: Santos, Fernanda
name: Mahandry Hugues Andrianarisoa
name: Astaiza, Johanna Hurtado
name: Jansen, Patrick A.
name: Kayijamahe, Charles
name: Lima, Marcela Guimarães Moreira
name: Salvador, Julia
name: Beaudrot, Lydia
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Environmental Science
subject: Ecology
subject: FOS: Biological sciences

description: A variety of factors can affect the biodiversity of tropical mammal communities, but their relative importance and directionality remain uncertain. Previous global investigations of mammal functional diversity have relied on range maps instead of observational data to determine community composition. We test the effects of species pools, habitat heterogeneity, primary productivity and human disturbance on the functional diversity (dispersion and richness) of mammal communities using the largest standardized tropical forest camera trap monitoring system, the Tropical Ecology Assessment and Monitoring (TEAM) Network. We use occupancy values derived from the camera trap data to calculate occupancy-weighted functional diversity and use Bayesian generalized linear regression to determine the effects of multiple predictors. Mammal community functional dispersion increased with primary productivity, while functional richness decreased with human-induced local extinctions and was significantly lower in Madagascar than other tropical regions. The significant positive relationship between functional dispersion and productivity was evident only when functional dispersion was weighted by species' occupancies. Thus, observational data from standardized monitoring can reveal the drivers of mammal communities in ways that are not readily apparent from range map-based studies. The positive association between occupancy-weighted functional dispersion of tropical forest mammal communities and primary productivity suggests that unique functional traits may be more beneficial in more productive ecosystems and may allow species to persist at higher abundances.
The Intention for Seasonal Influenza Vaccine (SIV) Uptake and the Perceived Beliefs of Healthcare Providers in a Private Tertiary Hospital in Metro Manila
Creators: name: Yumul, Gabriel I.
Publisher: name: Zenodo
Year: 2025
Subjects: Seasonal Influenza Vaccine
Healthcare providers
Vaccination Intention
Health Belief Model
Vaccine Hesitancy
International Health Policy

description: Healthcare providers' (HCPs) uptake of the seasonal influenza vaccine (SIV) vis-à-vis their perceived beliefs remain a fundamental international health concern. This study investigated the HCPs' intention to receive the SIV at a private tertiary hospital in Metro Manila and examined the perceived beliefs that influenced their decisions. The study based its theoretical framework on the Health Belief Model and used a cross-sectional, questionnaire-based study with total enumeration sampling. Chi-square and logistic regression analyses were performed to identify associations between the intent to vaccinate and perceived beliefs and the modifying factors.

Results showed a significant proportion of HCPs’ expressed intention to receive the SIV. The perceived beliefs including perceived susceptibility, severity, benefits, barriers, and cues to action played a major role in shaping vaccination intention, whereas socio-demographic and role-related factors showed little and non-significant influence apart from the history of seasonal influenza vaccination.

The findings revealed the need for interventions at both the targeted and broad-level health approaches to address vaccine hesitancy among HCPs. Educational activities, institution-led interventions, as well as suitably framed policy measures, were recommended to improve HCPs' vaccine uptake, ultimately contributing to better patient outcomes and a resilient healthcare workforce.
Optical excitations in Sr$_{2}$CuO$_{3}$
Creators: name: Kim, K. W.
name: Gu, G. D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigated excitation spectra of the one-dimensional chain compound Sr$_{2}$CuO$_{3}$. The small peak at 2.3 eV in the loss function was turned to correspond to the strong charge transfer transition at 1.8 eV in conductivity. It has the excitonic character expected in one dimensional extended Hubbard model of the transition from the lower Hubberd band to the Zhang-Rice singlet state. The strongest peak at 2.7 eV in the loss function is attributed to the continuum excitation of the excitonic charge transfer transition. The spectral weight sum rule is satisfied within these transitions.
description: 4 pages, 4 figures