cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Creation of the Person-Centered Wellness Home in Older Adults
Creators: name: Mielenz, Thelma J.
name: Tracy, Melissa S.
name: Jia, Haomiao
name: Durbin, Laura L.
name: Allegrante, John P.
name: Arniella, Guedy
name: Sorensen, Julie A.
Publisher: name: Columbia University
Year: 2020
Subjects: Patient-centered health care
Chronically ill
Health promotion
Community health services for older people

description: Background and Objectives: Extending the Patient-Centered Medical Home (PCMH) model into the community may address the poor linkage between medical clinics and underserved communities. Our first of three objectives was to determine if peer leaders and wellness coaches can be the relationship center of wellness care. We evaluated the Self-management Resource Center Small Group Programs (SMRCSGP), plus wellness coaching, as a booster intervention in older adults with chronic diseases. Second, we evaluated the role of personal health records (PHR) prototype as the linkage between the clinic and community. Using input from these two objectives, we lay the groundwork for the Person-centered Wellness Home (PCWH). Research Design and Methods: Participants enrolled from five South Bronx New York City Housing Authority communities. We conducted a pragmatic, randomized controlled trial using two arms (n = 121): (1) SMRCSGP and (2) SMRCSGP plus wellness coaching initiated as a booster after SMRCSGP completion. Adjusted individual growth models compared the slope differences for outcomes. We conducted a social networking analysis on the ties between wellness coaches and participants. PCMH-certified physicians completed in-depth interviews on the PHR prototype. An adaptation from the consensus-workshop model summarized the priority PCWH items. Results: There was an improvement in self-reported physical functioning (2.0 T-score units higher, p = .03) by the wellness coaching group, but the groups did not differ on physical activity. From the social networking analysis, connections were stable over time with wellness-coaches and participants. The Consensus Conference identified eight major components of the PCWH. Discussion and Implications: Wellness coaching post-SMRCSGP was a booster to physical function, an upstream outcome for physical activity. During the Consensus-Conference, community-based prevention marketing and personal navigators for connecting to a PCMH emerged as novel components. This supports future work in training community health workers as peer leaders to provide evidence-based programs and other PCWH components.
Hidden Momentum and Black Hole Kicks
Creators: name: Gralla, Samuel E.
name: Herrmann, Frank
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: A stationary magnetic dipole immersed in an electric field carries "hidden" mechanical momentum. However, the fate of this momentum if the fields are turned off is unclear. We consider a charge-and-dipole hidden momentum configuration, and turn off the fields by collapsing a null shell onto the system, forming a black hole. In numerical calculations we find that the black hole receives a kick corresponding to 0.1% of the initial stored momentum. When extrapolated to apply to purely gravitational phenomena, this efficiency suggests a role for the hidden momentum kick mechanism in generating the binary black hole "superkicks" observed in numerical simulations of Einstein's equation.
description: matches published version
Control of Metastable States by Heat Flux in the Hamiltonian Potts Model
Creators: name: Kobayashi, Michikazu
name: Nakagawa, Naoko
name: Sasa, Shin-ichi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The local equilibrium thermodynamics is a basic assumption of macroscopic descriptions of the out of equilibrium dynamics for Hamiltonian systems. We numerically analyze the Hamiltonian Potts model in two dimensions to study the violation of the assumption for phase coexistence in heat conduction. We observe that the temperature of the interface between ordered and disordered states deviates from the equilibrium transition temperature, indicating that metastable states at equilibrium are stabilized by the influence of a heat flux. We also find that the deviation is described by the formula proposed in an extended framework of the thermodynamics.
description: 20 pages, 10 figures
Magnus Wintergerst, Franconofurd, Band I. Die Befunde der karolingisch-ottonischen Pfalz aus den Frankfurter Altstadtgrabungen 1953–1993
Creators: name: Blaich, Marcus C.
Publisher: name: Bonner Jahrbücher
Year: 2017

description: Rezension zu: Magnus Wintergerst, Franconofurd, Band I. Die Befunde der karolingisch-ottonischen Pfalz aus den Frankfurter Altstadtgrabungen 1953–1993. Mit einem Beitrag von Egon Wamers. Schriften des Archäologischen Museums Frankfurt, Band 22, 1. Eigenverlag des Archäologischen Museums Frankfurt, Frankfurt am Main 2007. 177 Seiten mit 55 Abbildungen, 19 zum Teil farbige Pläne
description: Bonner Jahrbücher, Bd. 209.2009(2011): Bonner Jahrbücher
WALLABY Pre-Pilot Survey: Radio Continuum Properties of the Eridanus Supergroup
Creators: name: Grundy, J. A.
name: Wong, O. I.
name: Lee-Waddell, K.
name: Seymour, N.
name: For, B. -Q.
name: Murugeshan, C.
name: Koribalski, B. S.
name: Madrid, J. P.
name: Rhee, J.
name: Westmeier, T.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the highest resolution and sensitivity $\sim1.4\,$GHz continuum observations of the Eridanus supergroup obtained as a part of the Widefield ASKAP L-band Legacy All-sky Blind surveY (WALLABY) pre-pilot observations using the Australian Square Kilometer Array Pathfinder (ASKAP). We detect 9461 sources at 1.37 GHz down to a flux density limit of $\sim0.1$ mJy at $6.1''\times 7.9''$ resolution with a mean root-mean-square (RMS) of 0.05 mJy/beam. We find that the flux scale is accurate to within 5% (compared to NVSS at 1.4 GHz). We then determine the global properties of eight Eridanus supergroup members, which are detected in both radio continuum and neutral hydrogen (HI) emission, and find that the radio-derived star formation rates (SFRs) agree well with previous literature. Using our global and resolved radio continuum properties of the nearby Eridanus galaxies, we measure and extend the infrared-radio correlation (IRRC) to lower stellar masses and inferred star formation rates than before. We find the resolved IRRC to be useful for: 1) discriminating between AGN and star-forming galaxies (SFGs); 2) identifying background radio sources; and 3) tracing the effects of group environment pre-processing in NGC 1385. We find evidence for tidal interactions and ram-pressure stripping in the HI, resolved spectral index and IRRC morphologies of NGC 1385. There appears to be a spatial coincidence (in projection) of double-lobed radio jets with the central HI hole of NGC 1367. The destruction of polycyclic aromatic hydrocarbons (PAHs) by merger-induced shocks may be driving the observed WISE W3 deficit observed in NGC 1359. Our results suggest that resolved radio continuum and IRRC studies are excellent tracers of the physical processes that drive galaxy evolution and will be possible on larger sample of sources with upcoming ASKAP radio continuum surveys.
description: 26 pages, 14 figures, Accepted for publication at PASA 23/2/2023, Full catalogues and underlying data available at: https://doi.org/10.25919/8ga8-0n09
title: Παραγωγή και ανίχνευση ακουστικών κυμάτων με χρήση τεχνολογίας λέιζερ, κατασκευή και μετρήσεις
Creators: name: Χατζηγιαννάκης Κώστας
Publisher: name: Technical University of Crete
Year: 2007

description: Μη διαθέσιμο
Forecasting through deep learning and modal decomposition in two-phase concentric jets
Creators: name: Mata, León
name: Abadía-Heredia, Rodrigo
name: Lopez-Martin, Manuel
name: Pérez, José M.
name: Clainche, Soledad Le
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: This work aims to improve fuel chamber injectors' performance in turbofan engines, thus implying improved performance and reduction of pollutants. This requires the development of models that allow real-time prediction and improvement of the fuel/air mixture. However, the work carried out to date involves using experimental data (complicated to measure) or the numerical resolution of the complete problem (computationally prohibitive). The latter involves the resolution of a system of partial differential equations (PDE). These problems make difficult to develop a real-time prediction tool. Therefore, in this work, we propose using machine learning in conjunction with (complementarily cheaper) single-phase flow numerical simulations in the presence of tangential discontinuities to estimate the mixing process in two-phase flows. In this meaning we study the application of two proposed neural network (NN) models as PDE surrogate models. Where the future dynamics is predicted by the NN, given some preliminary information. We show the low computational cost required by these models, both in their training and inference phases. We also show how NN training can be improved by reducing data complexity through a modal decomposition technique called higher order dynamic mode decomposition (HODMD), which identifies the main structures inside flow dynamics and reconstructs the original flow using only these main structures. This reconstruction has the same number of samples and spatial dimension as the original flow, but with a less complex dynamics and preserving its main features. The core idea of this work is to test the limits of applicability of deep learning models to data forecasting in complex fluid dynamics problems. Generalization capabilities of the models are demonstrated by using the same NN architectures to forecast the future dynamics of four different two-phase flows.
description: 48 pages, 21 figures, 13 tables. Submitted to Expert Systems with Applications
title: Πολυφωτονική παραγωγή ηλεκτρονίου ποζιτρονίου από το κενό παρουσία υψηλής ενέργειας φωτονίων - προσέγγιση συντονισμού σε σύστημα δύο σταθμών
Creators: name: Πλουμιστάκης Ιωάννης
Publisher: name: Technical University of Crete
Year: 2007

description: φ. 1: Πολυφωτονική παραγωγή e- e+ από το κενό χρησιμοποιώντας τη προσέγγιση συντονισμού σε σύστημα δύο σταθμών -- Κεφ. 2: Πολυφωτονική παραγωγή ζευγών e- e+ με χρήση της προσέγγισης συστήματος δύο σταθμών σε συντονισμό, από λέιζερ ελευθέρων ηλεκτρονίων από ακτίνες X (X-FEL- X-ray free electron laser) -- Κεφ. 3: Νέες προτεινόμενες πειραματικές μέθοδοι για την πολυφωτονική παραγωγή e- e+ από το κενό με τη χρήση της προσέγγισης συντονισμού σε σύστημα δύο σταθμών
New ladder operators for a rational extension of the harmonic oscillator and superintegrability of some two-dimensional systems
Creators: name: Marquette, I.
name: Quesne, C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: New ladder operators are constructed for a rational extension of the harmonic oscillator associated with type III Hermite exceptional orthogonal polynomials and characterized by an even integer $m$. The eigenstates of the Hamiltonian separate into $m+1$ infinite-dimensional unitary irreducible representations of the corresponding polynomial Heisenberg algebra. These ladder operators are used to construct a higher-order integral of motion for two superintegrable two-dimensional systems separable in cartesian coordinates. The polynomial algebras of such systems provide for the first time an algebraic derivation of the whole spectrum through their finite-dimensional unitary irreducible representations.
description: 22 pages, published version
Application of the Consolidated Framework for Implementation Research to examine nurses’ perception of the task shifting strategy for hypertension control trial in Ghana
Creators: name: Gyamfi, Joyce
name: Allegrante, John P.
name: Iwelunmor, Juliet
name: Williams, Olajide A.
name: Plange-Rhule, Jacob
name: Blackstone, Sarah
name: Ntim, Michael
name: Apusiga, Kingsley
name: Peprah, Emmanuel
name: Ogedegbe, Gbenga
Publisher: name: Columbia University
Year: 2020
Subjects: Community health nursing
Community health services
Hypertension
Blood pressure--Regulation

description: Background: The burden of hypertension in many low-and middle-income countries is alarming and requires effective evidence-based preventative strategies that is carefully appraised and accepted by key stakeholders to ensure successful implementation and sustainability. We assessed nurses’ perceptions of a recently completed Task Shifting Strategy for Hypertension control (TASSH) trial in Ghana, and facilitators and challenges to TASSH implementation. Methods: Focus group sessions and in-depth interviews were conducted with 27 community health nurses from participating health centers and district hospitals involved in the TASSH trial implemented in the Ashanti Region, Ghana, West Africa from 2012 to 2017. TASSH evaluated the comparative effectiveness of the WHO-PEN program versus provision of health insurance for blood pressure reduction in hypertensive adults. Qualitative data were analyzed using open and axial coding techniques with emerging themes mapped onto the Consolidated Framework for Implementation Research (CFIR). Results: Three themes emerged following deductive analysis using CFIR, including: (1) Patient health goal setting- relative priority and positive feedback from nurses, which motivated patients to make healthy behavior changes as a result of their health being a priority; (2) Leadership engagement (i.e., medical directors) which influenced the extent to which nurses were able to successfully implement TASSH in their various facilities, with most directors being very supportive; and (3) Availability of resources making it possible to implement the TASSH protocol, with limited space and personnel time to carry out TASSH duties, limited blood pressure (BP) monitoring equipment, and transportation, listed as barriers to effective implementation. Conclusion: Assessing stakeholders’ perception of the TASSH implementation process guided by CFIR is crucial as it provides a platform for the nurses to thoroughly evaluate the task shifting program, while considering the local context in which the program is implemented. The feedback from the nurses informed barriers and facilitators to implementation of TASSH within the current healthcare system, and suggested system level changes needed prior to scale-up of TASSH to other regions in Ghana with potential for long-term sustainment of the task shifting intervention.
Bibliographien der Wissenschaftlerinnen und Wissenschaftler / Publications des chercheurs
Creators: name: Redaktion, Die
Publisher: name: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel
Year: 2017

description: -
description: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel, Jahresbericht / Rapport annuel 2015/2016
title: Χάλυβες οπλισμού σκυροδέματος και εφαρμογή των κανονισμών και προτύπων κατά την παραλαβή οπλισμού σε τεχνικά έργα
Creators: name: Μπροκαλάκης Κωνσταντίνος
Publisher: name: Technical University of Crete
Year: 2006

description: φ. 1: Σήμανση χαλύβων οπλισμού σκυροδέματος -- Κεφ. 2: Πληροφορικά στοιχεία για τις ελληνικές χαλυβουργίες -- Κεφ. 3: Τεχνικά χαρακτηριστικά χαλύβων οπλισμού σκυροδέματος -- Κεφ. 4: Συμμόρφωση ποιότητας χαλύβων οπλισμού σκυροδέματος -- Κεφ. 5: Διαμόρφωση χαλύβων οπλισμού σκυροδέματος -- Κεφ. 6: Παραλαβή χαλύβων οπλισμού σκυροδέματος στο έργο "Γυμνάσιο-Τ.Ε.Ε.-Σ.Ε.Κ. Βρυσσών Δήμου Κρυονερίδας"
A flash of polarized optical light points to an aspherical "cow"
Creators: name: Maund, J. R.
name: Hoeflich, P. A.
name: Steele, I. A.
name: Yang, Y.
name: Wiersema, K.
name: Kobayashi, S.
name: Jordana-Mitjans, N.
name: Mundell, C.
name: Gomboc, A.
name: Guidorzi, C.
name: Smith, R. J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The astronomical transient AT2018cow is the closest example of the new class of luminous, fast blue optical transients (FBOTs). Liverpool Telescope RINGO3 observations of AT2018cow are reported here, which constitute the earliest polarimetric observations of an FBOT. At 5.7 days post-explosion, the optical emission of AT2018cow exhibited a chromatic polarization spike that reached ~7% at red wavelengths. This is the highest intrinsic polarization recorded for a non-relativistic explosive transient, and is observed in multiple bands and at multiple epochs over the first night of observations, before rapidly declining. The apparent wavelength dependence of the polarization may arise through depolarization or dilution of the polarized flux, due to conditions in AT~2018cow at early times. A second ``bump" in the polarization is observed at blue wavelengths at ~12 days. Such a high polarization requires an extremely aspherical geometry that is only apparent for a brief period (<1 day), such as shock breakout through an optically thick disk. For a disk-like configuration, the ratio of the thickness to radial extent must be ~10%.
description: MNRAS Accepted, 10 pages, 8 figures
Principios Directrices y Desarrollo del Modelo Islandés para la Prevención del Uso de Sustancias en Adolescentes
Creators: name: Kristjansson, Alfgeir L.
name: Mann, Michael J.
name: Thorisdottir, Ingibjorg E.
name: Allegrante, John P.
name: Sigfusdottir, Inga Dora
Publisher: name: Columbia University
Year: 2020
Subjects: Substance abuse--Prevention
Youth--Substance use--Prevention
Teenagers
Health education

description: El uso de sustancias por los adolescentes (i.e. el consumo de alcohol, tabaco, y otras drogas), persiste como un problema global, y se mantiene como un desafío para nuestras sociedades y autoridades de salud pública. Como respuesta a las altas tasas de uso de sustancias en adolescentes en los años ‘90, en Islandia han sido pioneros en el desarrollo del Modelo Islandés Para la Prevención Primaria del Uso de Substancias – un método basado en la teoría y evidencia científica que ha demostrado su efectividad en bajar los niveles de consumo en Islandia en los últimos 20 años. Para documentar este método e informar sobre los procesos basados-en-la-práctica que puedan ayudar en establecer este modelo en otros países, describimos esquemáticamente en esta serie de dos partes la teoría, antecedentes, principios directrices del método, y los pasos centrales en la implementación exitosa del modelo. En este artículo describimos los antecedentes y contexto necesarios, la orientación teórica, el desarrollo del método, y brevemente revisamos los hallazgos y datos publicados. Adicionalmente, presentamos los cinco principios guía en los que se basa el método del Modelo de Prevención Islandés para la prevención del uso de sustancias en adolescentes, y discutimos la evidencia acumulada que apoya la efectividad del modelo. En el siguiente artículo, parte 2, identificamos y describimos procesos clave en el modelo y los diez pasos centrales de la implementación efectiva y basada en la práctica de este modelo.
THE INFLUENCE OF UPWARD ROAD TRAFFIC ON THE REINFORCED CONCRETE SLABS OF MULTI - GIRDER BRIDGES ACCORDING TO EUROCODE 1
Creators: name: LAKHAL SEBAHI
name: MOHAMED BENSOULA
name: MOHAMED ZAOUI
name: TAHAR KADRI
Publisher: name: Zenodo
Year: 2023
Subjects: Frame Bridge, Reinforced Concrete, traffic, truck, Modelling, Simulation, Eurocode.

description: Abstract
The global motorway network is currently experiencing substantial growth, leading to a constant expansion of engineering structures, with bridges being a particular focus. Due to the enormous investments made, it is crucial that we not only preserve their value but also enhance them to meet future requirements. The growth of road traffic has become a major concern due to the increasing number of vehicles and the tonnage carried per axle. Future needs are also expected to follow the same trend. This surge in tonnage will escalate and may have serious repercussions on the stability of road bridges. Given that the computations for pre-existing bridges were conducted in agreement with the national regulations in force before their building, it is crucial to scrutinise the safety response of these bridges with regard to the amplified loads of heavy goods vehicles in circulation. The article aims to compare the various distortions that occur in the concrete multiple girder bridge slabs under the current regulations and the growing weight of lorries presently operating by taking Algeria as a case study.
Intrinsic orbital and spin Hall effect in bismuth semimetal
Creators: name: Qu, Guanxiong
name: Tatara, Gen
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the intrinsic orbital Hall conductivity (OHC) and spin Hall conductivity (SHC) in a bismuth semimetal, by employing an sp-orbital tight-binding model. We report a notable difference between the anisotropy of OHC and SHC whose orbital and spin polarizations lie within the basal plane. We do not observe a substantial correlation between the orbital and spin Berry curvatures with spin-orbit coupling (SOC) at the Fermi energy, disproving the correlation between OHC and SHC in a strong SOC regime. We argue the huge SHC in a Bi semimetal is attributed to its gigantic SOC which strongly affects the hybridization of the p orbitals, despite its relatively small magnitude of OHC. We hope the distinct anisotropy of OHC and SHC provides a feasible means to differentiate between the two effects in experiments.
description: 4 pages, 4 figures
Beyond the Unnameable
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019
Subjects: Strikes and lockouts
Publishers and publishing

description: Callers. One talks about the strike happening at Macmillan and Co. publishers. Dick Hogman (another WBAI host?) discusses NASA and broadcast satellites, Pacifica, and listener supported radio. Fass, Dick, and Margot debate whether or not to give out the specific radio frequency on the air or to individual listeners
Mechanism of self-organization in point vortex system
Creators: name: Yatsuyanagi, Yuichi
name: Hatori, Tadatsugu
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A mechanism of the self-organization in an unbounded two-dimensional (2D) point vortex system is discussed. A kinetic equation for the system with positive and negative vortices is derived using the Klimontovich formalism. Similar to the Fokker-Planck collision term, the obtained collision term consists of a diffusion term and a drift term. It is revealed that the mechanism for the self-organization in the 2D point vortex system at negative absolute temperature is mainly provided by the drift term. Positive and negative vortices are driven toward opposite directions respectively by the drift term. As a result, well-known, two isolated clumps with positive and negative vortices, respectively, are formed as an equilibrium distribution. Regardless of the number of species of the vortices, either single- or double-sign, it is found that the collision term has following physically good properties: (i) When the system reaches a quasi-stationary state near the thermal equilibrium state with negative absolute temperature, the sign of $d ω/ d ψ$ is expected to be positive, where $ω$ is the vorticity and $ψ$ is the stream function. In this case, the diffusion term decreases the mean field energy, while the drift term increases it. As a whole, the total mean field energy is conserved. (ii) Similarly, the diffusion term increases the Boltzmann entropy, while the drift term decreases it. As a whole, the total entropy production rate is positive or zero ($H$ theorem), which ensures that the system relaxes to the global thermal equilibrium state characterized by the zero entropy production.
description: Typographic errors in Eq. (27) and (28) are corrected
Observation of giant magnetocaloric effect in HoCoSi
Creators: name: Gupta, Sachin
name: Suresh, K. G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report the magnetic and magnetocaloric properties of HoCoSi, which shows second order ferro-para magnetic transition at 14 K. It is found to exhibit a large magnetic entropy change of 13 J/kg K for a field change of 20 kOe, which increases to 20.5 J/kg K at 50 kOe. The refrigerant capacity is found to be 135 and 410 J/kg for 20 and 50 kOe, respectively. The large, low-field adiabatic temperature change (~ 3 K) and a large refrigerant capacity make this compound a suitable candidate for magnetic refrigeration applications at around 15 K.
description: 9 pages, 3 figures
What Promotes Smectic Order: Applying Mean Field Theory to the Ends
Creators: name: King, David A.
name: Kamien, Randall D.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Not every particle that forms a nematic liquid crystal makes a smectic. The particle tip is critical for this behaviour. Ellipsoids do not make a smectic, but sphero-cylinders do. Similarly, only those N-CB alkylcyanobiphenyls with sufficiently long ($N\ge 8$ carbons) alkane tails form smectics. We understand the role of the particle tip in the smectic transition by means of a simple two-dimensional model. We model sphero-cylinders by "boubas" with rounded tips, and ellipsoids by "kikis" with pointed tips. The N-CB molecules are modelled by a small body with a polymer tail. We find that rounded tips and longer polymer tails lead to a smectic at lower densities by making the space between layers less accessible, destabilizing the nematic.
description: 12 pages, 8 figures, what more could you need?
Locally linear representation for image clustering
Creators: name: Zhen, Liangli
name: Yi, Zhang
name: Peng, Xi
name: Peng, Dezhong
Publisher: name: arXiv
Year: 2013
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: It is a key to construct a similarity graph in graph-oriented subspace learning and clustering. In a similarity graph, each vertex denotes a data point and the edge weight represents the similarity between two points. There are two popular schemes to construct a similarity graph, i.e., pairwise distance based scheme and linear representation based scheme. Most existing works have only involved one of the above schemes and suffered from some limitations. Specifically, pairwise distance based methods are sensitive to the noises and outliers compared with linear representation based methods. On the other hand, there is the possibility that linear representation based algorithms wrongly select inter-subspaces points to represent a point, which will degrade the performance. In this paper, we propose an algorithm, called Locally Linear Representation (LLR), which integrates pairwise distance with linear representation together to address the problems. The proposed algorithm can automatically encode each data point over a set of points that not only could denote the objective point with less residual error, but also are close to the point in Euclidean space. The experimental results show that our approach is promising in subspace learning and subspace clustering.
Synthesis and physical properties of a new layered ferromagnet, Cr1.21Te2
Creators: name: Shu, Zhixue
name: Wang, Haozhe
name: Jo, Na Hyun
name: Jozwiak, Chris
name: Bostwick, Aaron
name: Rotenberg, Eli
name: Xie, Weiwei
name: Kong, Tai
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Single crystals of a new layered compound, Cr1.21Te2, was synthesized via a vapor transport method. The crystal structure and physical properties were characterized by single crystal and powder x-ray diffraction, temperature- and field-dependent magnetization, zero-field heat capacity and angle-resolved photoemission spectroscopy. Cr1.21Te2, containing two Cr sites, crystalizes in a trigonal structure with a space group P-3 (No. 147). The Cr site in the interstitial layer is partially occupied. Physical property characterizations indicate that Cr1.21Te2 is metallic with hole pockets at the Fermi energy and undergoes a ferromagnetic phase transition at ~173 K. The magnetic moments align along the c-axis in the ferromagnetic state. Based on low temperature magnetization, the spin stiffness constant D and spin excitation gap $Δ$ were estimated according to Bloch's law to be D = 99 $\pm$ 24 meV $Å^2$ and $Δ$ = 0.46 $\pm$ 0.33 meV, suggesting its possible application as a low dimensional ferromagnet.
description: 6 figures
Observed UV continuum slopes ($β$) of galaxies at $z = 0.40-0.75$ in the GOODS-north field
Creators: name: Mondal, Chayan
name: Saha, Kanak
name: Windhorst, Rogier A.
name: Jansen, Rolf A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We estimate the UV continuum slope ($β$) of 465 galaxies (with luminosities of 0.028 $-$ 3.3 $L^{*}_{z=0.5}$) in the Great Observatories Origins Survey (GOODS) Northern field in the redshift range $z=0.40 - 0.75$. We use two AstroSat/UVIT (N242W, N245M), two HST (F275W, F336W), and a KPNO (U) bands to sample the UV continuum slope of selected galaxies between 1215 and 2600 angstrom. The mean (median) and 1$σ$ scatter in the observed $β$ are found to be $-1.33\pm0.07~(-1.32)$ and 0.60 within the considered redshift range. We do not find any significant evolution in the mean $β$ within our redshift window. Our measurements add new data points to the global $β$ - $z$ relation in the least-explored redshift regime, further reinforcing the gradual reddening of galaxy UV continuum with cosmic time. We notice no strong consistent trend between $β$ and M$_{1500}$ for the entire luminosity range $-21$ $< M_{1500} <-15$ mag. Although, the majority of the most luminous galaxies (M$_{1500} <-19$ mag) are found to have relatively redder slopes. Using UVIT, we detect galaxies as faint as M$_{1500} = -15.6$ mag (i.e., 0.028 $L^{*}_{z=0.5}$). The faintest galaxies (M$_{1500} > -16$ mag) tend to be redder, which indicates they were less actively forming stars during this cosmic time interval. Our study highlights the unique capability of UVIT near-UV imaging to characterize the rest-frame far-UV properties of galaxies at redshift $z \sim 0.5$.
description: Accepted for publication in the Astrophysical Journal
title: Χειρονομίες σύνδεσης της ιστορικής πόλης. Επεμβαίνοντας εντός και εκτός των βυζαντινών τειχών στο Καστέλι Χανίων
Creators: name: Χρονοπουλου Ελενη
Publisher: name: Technical University of Crete
Year: 2016

description: Το Καστέλι αποτελεί προνομιακό, ιστορικά και αστικά φορτισμένο, σημείο της πόλης των Χανίων. Οι αλληλεπίκαλύψεις των πολλαπλών ιστορικών επιπέδων στο χώρο του, έχουν οδηγήσει στη δημιουργία ενός συνόλου θραυσματικών ιστορικών  τόπων. Η παρούσα μελέτη  προσανατολίζεται στη ύφανση τους σε μία συνεκτική πλοκή.  Συγκεκριμένα, σχεδιάζεται  ένα δίκτυο μονοπατιών και σημείων κλειδιών που συνδέουν την πόλη εντός και εκτός των Βυζαντινών τειχών. Η οχύρωση αποτελεί τη  ραχοκοκαλιά πάνω στην οποία αρθρώνονται οι πόλοι έλξης ανάμεσα στο Καστέλι και το παλιό λιμάνι. Ακολουθώντας  το ίχνος της αναπτύσσεται ένα υπόσκαφο μουσείο πόλης, το οποίο περιγράφεται ως μια σειρά διαβαθμισμένων χωρικών εμπειριών, που αποτελούν συνέχεια της περιπλάνησης στο αστικό τοπίο. Πρόκειται για μια χειρονομία κυριολεκτικής και εννοιολογικής εμβάθυνσης στην ιστορία της πόλης, η οποία ωθεί τον επισκέπτη στην περαιτέρω εξερεύνηση της.
Two-color soliton meta-atoms and molecules
Creators: name: Melchert, O.
name: Willms, S.
name: Babushkin, I.
name: Morgner, U.
name: Demircan, A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present a detailed overview of the physics of two-color soliton molecules in nonlinear waveguides, i.e. bound states of localized optical pulses which are held together due to an incoherent interaction mechanism. The mutual confinement, or trapping, of the subpulses, which leads to a stable propagation of the pulse compound, is enabled by the nonlinear Kerr effect. Special attention is paid to the description of the binding mechanism in terms of attractive potential wells, induced by the refractive index changes of the subpulses, exerted on one another through cross-phase modulation. Specifically, we discuss nonlinear-photonics meta atoms, given by pulse compounds consisting of a strong trapping pulse and a weak trapped pulse, for which trapped states of low intensity are determined by a Schrödinger-type eigenproblem. We discuss the rich dynamical behavior of such meta-atoms, demonstrating that an increase of the group-velocity mismatch of both subpulses leads to an ionization-like trapping-to-escape transition. We further demonstrate that if both constituent pulses are of similar amplitude, molecule-like bound-states are formed. We show that z-periodic amplitude variations permit a coupling of these pulse compound to dispersive waves, resulting in the resonant emission of Kushi-comb-like multi-frequency radiation.
Implementación del Modelo Islandés para la Prevención del Uso del Sustancias en Adolescentes
Creators: name: Kristjansson, Alfgeir L.
name: Mann, Michael J.
name: Sigfusson, Jon
name: Thorisdottir, Ingibjorg E.
name: Allegrante, John P.
name: Sigfusdottir, Inga Dora
Publisher: name: Columbia University
Year: 2020
Subjects: Substance abuse--Prevention
Youth--Substance use--Prevention
Teenagers
Health education

description: Esta es la segunda de una serie de dos partes de artículos sobre el Modelo Islandés de Prevención Primaria del Uso de Sustancias (MIP) en Health Promotion Practice. El MIP es una estrategia comunitaria colaborativa que ha demostrado notable efectividad en reducir el inicio del uso de sustancias entres jóvenes de Islandia en los últimos 20 años. Mientras el primer artículo se enfocó en el contexto de fondo, orientación teórica, evaluación y evidencia de su efectividad, y los cinco principios guías del modelo, este segundo artículo describe los 10 pasos centrales en la implementación práctica. Los pasos 1 a 3 se enfocan en cómo construir y mantener la capacidad comunitaria para la implementación del modelo. Los pasos 4 a 6 se enfocan en cómo implementar un sistema riguroso de recolección de datos, como procesarlos, la diseminación de los datos y la traducción de los hallazgos. Los pasos 7 a 9 están diseñados para enfocar la atención de la comunidad y para maximizar el compromiso comunitario en crear y mantener un medioambiente social en el cual la gente joven progresivamente se hace menos proclive a consumir sustancias, e incluye ejemplos ilustrativos de Islandia. Y el paso 10 se enfoca en la naturaleza iterativa, repetitiva y de largo plazo del MIP y describe un amplio y predecible arco de oportunidades y desafíos relacionados con la implementación. Este artículo concluye con una breve discusión sobre las potenciales variaciones en los factores comunitarios para la implementación.
Vollmer, Dankward (mit Markus Merl, Markus Sehlmeyer und Uwe Walter): Alte Geschichte in Studium und Unterricht. Eine Einführung mit kommentiertem Literaturverzeichnis
Creators: name: Eckhardt, Daniel
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Vollmer, Dankward (mit Markus Merl, Markus Sehlmeyer und Uwe Walter): Alte Geschichte in Studium und Unterricht. Eine Einführung mit kommentiertem Literaturverzeichnis. Stuttgart: Steiner 1994. 203 S. (ISBN 3-515- 06468-0).
description: Forum Classicum, Nr. 2 (1997): Forum Classicum
Souli, Sofia: Griechische Mythologie
Creators: name: Wölke, Hansjörg
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Souli, Sofia: Griechische Mythologie. Übers. v. Hanns E. Langenfass. Athen: Toubis 1995. 173 S. Bestellungen an Hans Widmer, Juraweidstr. 11, CH-5023 Biberstein
description: Forum Classicum, Nr. 2 (1997): Forum Classicum
Platon. Ausgew. u. vorgest. v. Rafael Ferber
Creators: name: Scheffel, Wolfgang
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Platon. Ausgew. u. vorgest. v. Rafael Ferber. München: Deutscher Taschenbuch Verlag 1997 (dtv. 30680). 512 S. 29,90 DM (ISBN3-423-30680-7).
description: Forum Classicum, Nr. 1 (1998): Forum Classicum
Electric polarization in correlated insulators
Creators: name: Nourafkan, R.
name: Kotliar, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We derive a formula for the electric polarization of interacting insulators, expressed in terms of the full Green's and vertex functions. We exemplify this method in the half-filled ionic Hubbard model treated within dynamical mean field theory (DMFT). The electric polarization of a correlated band insulator is determined by the interplay of ionicity and covalency, and both quantities are renormalized by the electron-electron interactions. We introduce quasiparticle approximation to the exact equation for the polarization, and compare the results of this approximation with those of the exact DMFT formulation and of static mean field theories such as the LDA+ U. The latter overestimates the electronic contribution to the electric polarization when the quasiparticle weight of the active bands is very small.
Identifying Personal Data Processing for Code Review
Creators: name: Tang, Feiyang
name: Østvold, Bjarte M.
name: Bruntink, Magiel
Publisher: name: arXiv
Year: 2023
Subjects: subject: Software Engineering (cs.SE)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Code review is a critical step in the software development life cycle, which assesses and boosts the code's effectiveness and correctness, pinpoints security issues, and raises its quality by adhering to best practices. Due to the increased need for personal data protection motivated by legislation, code reviewers need to understand where personal data is located in software systems and how it is handled. Although most recent work on code review focuses on security vulnerabilities, privacy-related techniques are not easy for code reviewers to implement, making their inclusion in the code review process challenging. In this paper, we present ongoing work on a new approach to identifying personal data processing, enabling developers and code reviewers in drafting privacy analyses and complying with regulations such as the General Data Protection Regulation (GDPR).
description: Accepted by The 9th International Conference on Information Systems Security and Privacy (ICISSP 2023)
Variable Blue Straggler Stars in Open Cluster NGC 6819 Observed in the Kepler 'Superstamp' Field
Creators: name: Guzik, Joyce A.
name: Baran, Andrzej S.
name: Sanjayan, Sachu
name: Németh, Péter
name: Hedlund, Anne M.
name: Jackiewicz, Jason
name: Dauelsberg, Lori R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: NGC 6819 is an open cluster of age 2.4 Gyr that was in the NASA Kepler spacecraft field of view from 2009 to 2013. The central part of the cluster was observed in a 200 x 200 pixel `superstamp' during these four years in 30-minute cadence photometry, providing a unique long time-series high-precision data set. The cluster contains 'blue straggler' stars, i.e., stars on the main sequence above the cluster turnoff that should have left the main sequence to become red giants. We present light curves and pulsation frequency analyses derived from custom photometric reductions for five confirmed cluster members--four blue stragglers and one star near the main-sequence turnoff. Two of these stars show a rich spectrum of $δ$ Scuti pulsation modes, with 236 and 124 significant frequencies identified, respectively, while two stars show mainly low-frequency modes, characteristic of $γ$ Doradus variable stars. The fifth star, a known active x-ray binary, shows only several harmonics of two main frequencies. For the two $δ$ Scuti stars, we use a frequency separation--mean-density relation to estimate mean density, and then use this value along with effective temperature to derive stellar mass and radius. For the two stars showing low frequencies, we searched for period-spacing sequences that may be representative of gravity-mode or Rossby-mode sequences, but found no clear sequences. The common age for the cluster members, considered along with the frequencies, will provide valuable constraints for asteroseismic analyses, and may shed light on the origin of the blue stragglers.
description: Accepted for publication in The Astronomical Journal February 23, 2023. 36 pages, 14 figures, 4 tables in text, 5 in Appendix
Beyond the Unnameable
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019

description: Recording of "Yellow Submarine in Pepperland" (George Martin orchestration) plays. Bob asks for calls. "The Shooting of Dan McGroo" by Lord Buckley plays. A caller (Ken) who works with the Bowery Residence Committee describes the work they do and appeals for listeners to send games to the residence
Compact star in $f(T)$ gravity with Tolman-Kuchowicz metric potential
Creators: name: Bhar, Piyali
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Employing $f(T)$ gravity, where $T$ is the torson, we have developed a new model of an anisotropic compact star in this work. Tolman-Kuchowicz (TK) metric potential has been used to solve the set of field equations. Furthermore, the matching conditions for interior and exterior geometry have been discussed. We have considered observation data of the compact star LMC X-4 and analyzed thermodynamical properties (density, pressure, equation of state parameter, square speed of sound, and equilibrium condition) analytically and graphically to test the validity of the solution. The compact star is found to meet the energy conditions. Through the causality condition and Herrera's cracking concept, the stability analysis of the present model has been presented and it confirms the physical acceptability of the solution. It has been shown that the obtained interior solutions for compact stars are consistent with all necessary physical criterions and therefore relevant as well as physically acceptable.
description: 14 pages, Accepted for publication in Chinese Journal of Physics
Bechthold-Hengelhaupt, Tilman: Alte Sprachen und neue Medien
Creators: name: Rettberg, Jürgen
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Bechthold-Hengelhaupt, Tilman: Alte Sprachen und neue Medien. Göttingen, Vandenhoeck und Ruprecht 2001. 154 S., kart. (ISBN 3-525-25754-6).
description: Forum Classicum, Nr. 1 (2002): Forum Classicum
Breakdown of self-averaging in the Bose glass
Creators: name: Hegg, Anthony
name: Krüger, Frank
name: Phillips, Philip W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study the square-lattice Bose-Hubbard model with bounded random on-site energies at zero temperature. Starting from a dual representation obtained from a strong-coupling expansion around the atomic limit, we employ a real-space block decimation scheme. This approach is non-perturbative in the disorder and enables us to study the renormalization-group flow of the induced random-mass distribution. In both insulating phases, the Mott insulator and the Bose glass, the average mass diverges, signaling short range superfluid correlations. The relative variance of the mass distribution distinguishes the two phases, renormalizing to zero in the Mott insulator and diverging in the Bose glass. Negative mass values in the tail of the distribution indicate the presence of rare superfluid regions in the Bose glass. The breakdown of self-averaging is evidenced by the divergent relative variance and increasingly non-Gaussian distributions. We determine an explicit phase boundary between the Mott insulator and Bose glass.
description: 5 pages + references, 5 figures
Thomas Haye, Humanismus in Schleswig-Holstein. Eine Anthologie lateinischer Gedichte des 16. und 17. Jahrhunderts - mit deutscher Übersetzung, Kommentierung und literarhistorischer Einordnung
Creators: name: Kipf, Stefan
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Thomas Haye, Humanismus in Schleswig-Holstein. Eine Anthologie lateinischer Gedichte des 16. und 17. Jahrhunderts - mit deutscher Übersetzung, Kommentierung und literarhistorischer Einordnung, Kiel 2001 (Verlag Ludwig), (ISBN 3-933598-21-4).
description: Forum Classicum, Nr. 1 (2002): Forum Classicum
L dwarfs detection from SDSS images using improved Faster R-CNN
Creators: name: Cao, Zhi
name: Yi, Zhenping
name: Pan, Jingchang
name: Su, Hao
name: Bu, Yude
name: Kong, Xiao
name: Luo, Ali
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a data-driven approach to automatically detect L dwarfs from Sloan Digital Sky Survey(SDSS) images using an improved Faster R-CNN framework based on deep learning. The established L dwarf automatic detection (LDAD) model distinguishes L dwarfs from other celestial objects and backgrounds in SDSS field images by learning the features of 387 SDSS images containing L dwarfs. Applying the LDAD model to the SDSS images containing 93 labeled L dwarfs in the test set, we successfully detected 83 known L dwarfs with a recall rate of 89.25% for known L dwarfs. Several techniques are implemented in the LDAD model to improve its detection performance for L dwarfs,including the deep residual network and the feature pyramid network. As a result, the LDAD model outperforms the model of the original Faster R-CNN, whose recall rate of known L dwarfs is 80.65% for the same test set. The LDAD model was applied to detect L dwarfs from a larger validation set including 843 labeled L dwarfs, resulting in a recall rate of 94.42% for known L dwarfs. The newly identified candidates include L dwarfs, late M and T dwarfs, which were estimated from color (i-z) and spectral type relation. The contamination rates for the test candidates and validation candidates are 8.60% and 9.27%, respectively. The detection results indicate that our model is effective to search for L dwarfs from astronomical images.
description: 12 pages, 10 figures, accepted to be published in AJ
Clement Utz (Hrsg.): adeo-NORM. Das lateinische Basisvokabular (mit Lernhilfen). Unter Mitarbeit von Katharina Börner, Wolfgang Freytag, Friedrich Heberlein, Andrea Kammerer und Klaus-Dieter Krüger
Creators: name: Weitz, Friedemann
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Clement Utz (Hrsg.): adeo-NORM. Das lateinische Basisvokabular (mit Lernhilfen). Unter Mitarbeit von Katharina Börner, Wolfgang Freytag, Friedrich Heberlein, Andrea Kammerer und Klaus-Dieter Krüger. Bamberg: Buchner 2001. 168 S. (ISBN 3-7661-5271-8).
description: Forum Classicum, Nr. 1 (2002): Forum Classicum