cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Circumneutral concentrated ammonium acetate solution as water-in-salt electrolyte
Creators: name: Halimi, Mohammad Said El
name: Poli, Federico
name: Mancuso, Nicola
name: Olivieri, Alessandro
name: Mattioli, Edoardo Jun
name: Calvaresi, Matteo
name: Chafik, Tarik
name: Zanelli, Alberto
name: Soavi, Francesca
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The exponentially growing market of electrochemical energy storage devices requires substitution of flammable, volatile, and toxic electrolytes. The use of Water in salt solutions (WiSE) regarded as green electrolyte might be of interest thanks to an association of key features such as high safety, low cost, wide electrochemical stability, and high ionic conductivity. Here, we report comprehensive chemical-physical study of circumneutral WiSE based on ammonium acetate so as to investigate application in electrochemical energy storage systems, with focus on the effect of pH, density, viscosity, conductivity, and the ESW with salt concentration ranging from 1 to 30 mol/kg . Data are reported and discussed with respect to the structure of the solutions investigated by complemental IR and molecular dynamic study. The study is addressed through the showcase of an asymmetric supercapacitor based on Argan shell-derived carbon electrodes tested at temperatures ranging from -10 to 80 °C.
Low-energy molecular collisions in a permanent magnetic trap
Creators: name: Sawyer, Brian C.
name: Stuhl, Benjamin K.
name: Wang, Dajun
name: Yeo, Mark
name: Ye, Jun
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Cold, neutral hydroxyl radicals are Stark decelerated and confined within a magnetic trap consisting of two permanent ring magnets. The OH molecules are trapped in the ro-vibrational ground state at a density of $\sim10^{6}$ cm$^{-3}$ and temperature of 70 mK. Collisions between the trapped OH sample and supersonic beams of atomic He and molecular D$_{2}$ are observed and absolute collision cross sections measured. The He--OH and D$_{2}$--OH center-of-mass collision energies are tuned from 60 cm$^{-1}$ to 230 cm$^{-1}$ and 145 cm$^{-1}$ to 510 cm$^{-1}$, respectively, yielding evidence of reduced He--OH inelastic cross sections at energies below 84 cm$^{-1}$, the OH ground rotational level spacing.
description: 4 pages, 4 figures
Challenges to Operate a Large Transmission Grid with Minimal or No Connected Synchronous Generators - Going Towards 100% Penetration of Power Electronics-Interfaced Generation
Creators: Various
Publisher: name: IEEE
Year: 2016

General Meeting Panel Discussion
Protection and Control Considerations for Future Grid Scenarios New Control Strategies for Improving Robustness against Grid Stiffness Protection and Control Issues in Systems with Converter Interfaced Generation Dynamic Performance of an All Converter Interfaced Generation WECC System From Inertia to Synchrony
GM 2019 - Transient Modeling and Analysis of Distribution Systems
Creators: Z. Wang
R. Nath
Publisher: name: IEEE
Year: 2019

Technical Session
Distribution grids have been passive and under-monitored in the past decades. However, with the evolving trend to incorporate dynamic sources such as inverter-based renewables and dynamic loads such as machines in demand response programs, the knowledge of transients in distribution systems becomes essential in stability analysis, protection setting, voltage control, and load management. In addition, the dynamic changes of system and load models are expected to be identified and analyzed quickly requiring fast simulations. The recent composite load models developed by NERC and WECC account for some distribution system dynamics but need further development. System simulation tools such as PSS/E have addressed some transient modeling problems, while specific software platforms have incorporated the interface to co-simulate with other platforms for distribution system transients. This panel will discuss the current and future development of transient models and analysis simulation tools for modern distribution systems.
GM 2019 - Power Systems Load Modeling: Opportunities, Challenges and Methodologies
Creators: Z. Wang
P. Mitra
R. Greer
Publisher: name: IEEE
Year: 2019

Technical Session
With the emerging penetration of renewable/distributed sources and dynamic loads, the power systems are becoming more complex and unobservable in terms of modeling and analysis. Traditional models of substations, feeders and loads are no longer sufficient in performing accurate analysis. However, the incorporation of more instrumentation and data points such as smart meters and PMUs have enabled the acquisition of useful information to remodel the load under the distribution hierarchies from substation, feeder to microgrid and device level loads. This panel will discuss the trend, needs, existing and foreseen technologies in deriving and adjusting the load models in different levels, and the visions of the use of such models in power systems analysis. The panelists spans from administration, national labs, academic and institutions who will provide insights from various angles and domains. Discussions will be led to reveal the directions and future of electricity load modeling in the USA.
GM 2019 - High Renewable Energy Penetrations Within Isolated and Remote Area Power Systems
Creators: N. Hatziargyriou
M. Negnevitsky
G. Holdmann
R. Rocheleau
H. Gooi
Publisher: name: IEEE
Year: 2019

Technical Session
Isolated and Remote Area Power Systems utilizing renewable energy technologies to satisfy the majority (>50%) of their annual energy consumption are evaluated within this panel session. Isolated power systems face significant challenges under high renewable energy penetrations given the lack of system
size and inertia. Papers presenting solutions to optimize system cost and performance, possibly involving renewable energy technologies, ancillary technologies or control and application methodologies are requested.
title: Oral health outreach services for Aboriginal and Torres Strait Islander children in the Northern Territory: July 2012 to December 2020
Creators: name: Australian Institute of Health and Welfare
Publisher: name: Australian Institute of Health and Welfare
Year: 2021

description: This report presents information on oral health outreach services provided to Aboriginal and Torres Strait Islander children and young people aged under 16 in the Northern Territory. There were some improvements over time in the proportion of Indigenous children in the NTRAI OHP with tooth decay.
Archivio tesi
Creators: name: Redazione, PEML
Publisher: name: Prassi Ecdotiche della Modernità Letteraria
Year: 2019

description: L’archivio raccoglie le tesi di laurea triennale, magistrale e di dottorato, discusse negli atenei italiani, che hanno come oggetto le questioni e le metodologie proposte dalla filologia dei testi a stampa e dalla filologia d’autore
description: Prassi Ecdotiche della Modernità Letteraria, N. 4/I (2019)
On the electronic structure of electron doped LaOFeAs as seen by X-ray absorption spectroscopy
Creators: name: Kroll, T.
name: Bonhommeau, S.
name: Kachel, T.
name: Duerr, H. A.
name: Werner, J.
name: Behr, G.
name: Koitzsch, A.
name: Huebel, R.
name: Leger, S.
name: Schoenfelder, R.
name: Ariffin, A.
name: Manzke, R.
name: de Groot, F. M. F.
name: Fink, J.
name: Eschrig, H.
name: Buechner, B.
name: Knupfer, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigated the recently found superconductor LaO_{1-x}F_xFeAs by X-ray absorption spectroscopy (XAS). From a comparison of the O K-edge with LDA calculations we find good agreement and are able to explain the structure and changes of the spectra with electron doping. An important result from this edge is a limitation of the Hubbard U to values not significantly larger than 1 eV. From experimental Fe L_2,3-edge spectra and charge transfer multiplet calculations we gain further information on important physical values such as hopping parameters, the charge transfer energy Delta, and the on-site Hubbard U. Furthermore we find the system to be very covalent with a large amount of ligand holes. A shift in the chemical potential is visible in the O K- and Fe L_2,3-edge spectra which emphasizes the importance of band effects in these compounds.
description: 4 pages, 2 figures
MITIGATING MORAL DISTRESS FOR RESUSCITATION TEAM HEALTHCARE PROVIDERS
Creators: name: Velasco, Monique
Publisher: name: Zenodo
Year: 2018

description: Healthcare providers who respond to cardiac arrest events often experience the highest form of moral distress. This distress results from the extreme efforts of cardiopulmonary resuscitation and the pronouncement of death. The aim of this 11-week project was to mitigate moral distress for resuscitation team healthcare provider (RTHPs) through education and the introduction of two interventions. A 20-minute education plan was provided to RTHPs in a non-profit, suburban acute care hospital. Education focused on moral distress, the pause (a moment of silence), and the 4 A’s to Rise Above Moral Distress self-debriefing tool. The moment of silence initiated at the end of unsuccessful resuscitations was used to acknowledge the life of the deceased and to appreciate the effort of the team. The 4 A’s self-debriefing process was accessible through an educational pamphlet on moral distress and the 4 A’s outline. A post education survey was distributed to 99 RTHPs. Thirty-nine survey responses were returned with 28 complete surveys analyzed. Most respondents (89.26%) reported the educational experience helped them talk about morally distressing situations with other healthcare providers. Thirty-seven resuscitation events occurred during the 11 weeks, of which eight were unsuccessful. A moment of silence was implemented in 6 of 8 events (75% utilization). Eighteen of the 29 patients who survived the initial resuscitation did not survive to discharge and 15 moments of silence were performed (83% utilization). The majority of respondents iv (96.43%) indicated the moment of silence allowed them to acknowledge the patient’s life and their teamwork. The 4 A’s debriefing process occurred 86% of the time with 93% of respondents reporting this helped them to acknowledge their own needs in handling moral distress. Based on these responses to the education and resulting changes in procedures, expanded use of the 20-minute education plan is recommended for other nursing departments whose staff experience high levels of moral distress.
The moore spectral sequence for principal fibrations
Creators: name: Donmez, Dogan
Publisher: name: University of British Columbia
Year: 2010

description: A proof of the Moore theorem which in the case of a principal fibration gives a spectral sequence converging to the homology of the base space is given. Also computed is the algebra structure of the homology of the Grassmannians, using Hopf algebra techniques and the cohomology of Grassmanians. Finally, it is shown that a spectral sequence for regular covering which was constructed earlier is a special case of the Moore Theorem.
Scattering matrices and expansion coefficients of Martian analogue palagonite particles
Creators: name: Laan, E. C.
name: Volten, H.
name: Stam, D. M.
name: Munoz, O.
name: Hovenier, J. W.
name: Roush, T. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present measurements of ratios of elements of the scattering matrix of Martian analogue palagonite particles for scattering angles ranging from 3 to 174 degrees and a wavelength of 632.8 nm. To facilitate the use of these measurements in radiative transfer calculations we have devised a method that enables us to obtain, from these measurements, a normalized synthetic scattering matrix covering the complete scattering angle range from 0 to 180 degrees. Our method is based on employing the coefficients of the expansions of scattering matrix elements into generalized spherical functions. The synthetic scattering matrix elements and/or the expansion coefficients obtained in this way, can be used to include multiple scattering by these irregularly shaped particles in (polarized) radiative transfer calculations, such as calculations of sunlight that is scattered in the dusty Martian atmosphere.
description: 34 pages 7 figures 1 table
GM 2019 - Aggregated Distributed Energy Resources: Impacts on Transmission and Distribution Planning and Operations
Creators: A. Ingram
J. Grooters
Publisher: name: IEEE
Year: 2019

Technical Session
This panel addresses issues related to the integration of aggregated distribution energy resources and their impact on transmission and distribution planning and operations. While individual DER do not cause operational challenges on distribution feeders, the cumulative effect of many units may have significant impact. Properly coordinated, they can provide flexibility in the energy supply, dispatched or curtailed based on the grid conditions and business opportunities at specific times. This panel examines the (a) technical, economic and regulatory aspects of DER aggregation; (b) methods for integrating aggregated resources into transmission and distribution network planning and operations; and (c) industry solutions for EMS, DMS and DERMS for aggregated DER, including concepts for virtual power plants and microgrids. This panel describes the role of standards in response to the challenges and impacts of the interconnection of individual DER; microgrids; and aggregated DER. It presents guidelines and existing practices on the techno-economic challenges and solutions for the deployment of DER aggregation platforms with respect to standards, e.g., IEEE p2030.11 DERMS.
title: Front Matter, Table of Contents, Preface, Program Committee, Subreviewers
Creators: name: Pagh, Rasmus
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2016
Subjects: subject: Front Matter
subject: Table of Contents
subject: Preface
subject: Program Committee
subject: Subreviewers

description: Front Matter, Table of Contents, Preface, Program Committee, Subreviewers
description: LIPIcs, Vol. 53, 15th Scandinavian Symposium and Workshops on Algorithm Theory (SWAT 2016), pages 0:i-0:xiv
GM 2019 - European Electricity Projects
Creators: U. Kerin
T. Donlagic
Publisher: name: IEEE
Year: 2019

Technical Session
There are a number of R&D, demonstration and deployment projects underway in the European Union, which are essential for operating the interconnected power system of ENTSO-E in a safe and reliable manner. Many have a significant impact on the electrical energy infrastructure on a national or international level, enhance the European energy market and aim at meeting the general EU�s energy policy objectives. Some focus on facilitating the integration of an increasing share of energy from variable renewable energy sources, while others try to find best ways to further interconnect the bulk power systems and efficiently exploit the electrical energy infrastructure. The panel session features technical presentations from the power industry, utility sector and academia. It aims at gathering professionals and interested stakeholders from the power engineering community to discuss recent advances in the development of the European power grid and learn from each other through the exchange of experience and practices.
HKT Geometry and de Sitter Supergravity
Creators: name: Grover, Jai
name: Gutowski, Jan B.
name: Herdeiro, Carlos A. R.
name: Sabra, Wafic
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Solutions of five dimensional minimal de Sitter supergravity admitting Killing spinors are considered. It is shown that the "timelike'' solutions are determined in terms of a four dimensional hyper-Kahler torsion (HKT) manifold. If the HKT manifold is conformally hyper-Kahler the most general solution can be obtained from a sub-class of supersymmetric solutions of minimal N=2 ungauged supergravity, by means of a simple transformation. Examples include a multi-BMPV de Sitter solution, describing multiple rotating black holes co-moving with the expansion of the universe. If the HKT manifold is not conformally hyper-Kahler, examples admitting a tri-holomorphic Killing vector field are constructed in terms of certain solutions of three dimensional Einstein-Weyl geometry.
description: 26 pages, latex
GM 2019 - Microgrids & Smart Neighborhoods in the Southeastern Region of the US
Creators: A. Ingram
M. Higginson
S. Ragsdale
Publisher: name: IEEE
Year: 2019

Technical Session
Small scale microgrids are on rise in the southeast region of United States. Local utilities are also partnering with homebuilders to build smart neighborhoods focusing on energy efficiency, automation and community scale microgrid. This panel session includes presentation of few real-world examples of small scale microgrids and smart neighborhoods from utilities of this region.
GM 2019 - Information System Developments to Enable Enhanced TSO-DSO Interaction
Creators: G. Taylor
M. Osman
Publisher: name: IEEE
Year: 2019

Technical Session
This panel presents a selection information system developments that aim to fully enable and enhance Transmission System Operator � Distribution System Operator interaction. Specific details of US, China and European R&D activities will also be presented. The panel session will highlight that overall power system operation and planning will be required to change significantly as a consequence of ongoing and emerging active distribution network developments. The conventional approach to the operation and planning of transmission and distribution networks as virtually separate entities, with limited coordination, will no longer be applicable or practical in the near future. In addition, quantifiable business or use cases will be assessed in order to justify required levels of data and information exchange to enable enhanced TSO-DSO interaction.
GM 2019 - Harmonic Modeling and Power Quality Assessment Issues for Isolatable Systems
Creators: F. Zavoda
X. Yang
B. Howe
A. Bracale
Publisher: name: IEEE
Year: 2019

Technical Session
This panel is intended to give a recent overview and achievements of harmonic modelling and simulation issues. Different modelling methods of nonlinear loads are considered for harmonic and disturbances >2 kHz. Since last decade, more and more power electronic-based energy sources and nonlinear loads are influencing levels of voltage quality of power system, particularly, in islanded operation mode. Furthermore, decentralized energy storages, renewable energy sources, AC/DC mix local grids and microgrids are arising new challenges for grid operators who seek adequate assessment methods in order to guarantee acceptable power quality levels in all grid operation modes. Besides harmonic phenomenon, EMC issues of conducted disturbances above 2 kHz as well as DC power quality will be also considered through recent research results from different committees of IEEE, CIRED, CIGRE.
GM 2019 - Asian and Australasian Experience
Creators: S. Mukhopadhyay
S. Soonee
M. Alam
Publisher: name: IEEE
Year: 2019

Technical Session
This panel session is meant for reporting about Asian and Australasian Experience on application of smart grid technology in different facets of handling electric power and energy, right from generation to utilization. Various aspects of renewable energy resources-based generation and its integration with the existing system for consumption in Asia and Australasia are being talked about in the context of other countries for economic growth and other pertinent issues.
Proper motions with Subaru I. Methods and a first sample in the Subaru Deep Field
Creators: name: Richmond, Michael W.
name: Morokuma, Tomoki
name: Doi, Mamoru
name: Komiyama, Yutaka
name: Yasuda, Naoki
name: Okamura, Sadanori
name: Gal-Yam, Avishay
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We search for stars with proper motions in a set of twenty deep Subaru images, covering about 0.28 square degrees to a depth of i ~ 25, taken over a span of six years. In this paper, we describe in detail our reduction and techniques to identify moving objects. We present a first sample of 99 stars with motions of high significance, and discuss briefly the populations from which they are likely drawn. Based on photometry and motions alone, we expect that 9 of the candidates may be white dwarfs. We also find a group of stars which may be extremely metal-poor subdwarfs in the halo.
description: 12 pages, 8 figures, submitted to PASJ
O'ZBEK BADIIY ADABIYOTIDA OTA OBRAZI
Creators: name: Bozorboyeva, Mushtariy
name: Abduolimova, Marhabo
Publisher: name: Zenodo
Year: 2023

description: Ota obrazi jahon adabiyotida ham alohida o‘rin tutadi. Jahon adabiyotida bu mavzuda yaratilgan asarlarga misol qilib ko'plab asarlarni   keltirishimiz   mumkin.   Ushbu   maqolada   Ulug`bek   Hamdam adibimizning ijodlaridan o`rin olgan ―Ota romaniga atroflicha fikr yuritiladi.
Extremely weak CO emission in IZw 18
Creators: name: Zhou, Luwenjia
name: Shi, Yong
name: Zhang, Zhi-Yu
name: Wang, Junzhi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Local metal-poor galaxies are ideal analogues of primordial galaxies with the interstellar medium (ISM) barely being enriched with metals. However, it is unclear whether carbon monoxide remains a good tracer and coolant of molecular gas at low metallicity. Based on the observation with the upgraded Northern Extended Millimeter Array (NOEMA), we report a marginal detection of CO $J$=2-1 emission in IZw18, pushing the detection limit down to $L^\prime_{\rm CO(2-1)}$=3.99$\times$10$^3$ K km$^{-1}$pc$^{-2}$, which is at least 40 times lower than previous studies. As one of the most metal-poor galaxies, IZw18 shows extremely low CO content despite its vigorous star formation activity. Such low CO content relative to its infrared luminosity, star formation rate, and [CII] luminosity, compared with other galaxies, indicates a significant change in the ISM properties at a few percent of the Solar metallicity. In particular, the high [CII] luminosity relative to CO implies a larger molecular reservoir than the CO emitter in IZw18. We also obtain an upper limit of the 1.3mm continuum, which excludes a sub-millimetre excess in IZw18.
description: 7 pages, 5 figures, 2 tables, accepted by A&A Letter
Electronic structure and exotic exchange splitting in spin-density-wave states of BaFe$_2$As$_2$
Creators: name: Yang, L. X.
name: Zhang, Y.
name: Ou, H. W.
name: Zhao, J. F.
name: Shen, D. W.
name: Zhou, B.
name: Wei, J.
name: Chen, F.
name: Xu, M.
name: He, C.
name: Chen, Y.
name: Wang, Z. D.
name: Wang, X. F.
name: Wu, T.
name: Wu, G.
name: Chen, X. H.
name: Arita, M.
name: Shimada, K.
name: Taniguchi, M.
name: Lu, Z. Y.
name: Xiang, T.
name: Feng, D. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The magnetic properties in the parent compounds are often intimately related to the microscopic mechanism of superconductivity. Here we report the first direct measurements on the electronic structure of a parent compound of the newly discovered iron-based superconductor, BaFe$_2$As$_2$, which provides a foundation for further studies. We show that the energy of the spin density wave (SDW) in BaFe$_2$As$_2$ is lowered through exotic exchange splitting of the band structure, rather than Fermi surface nesting of itinerant electrons. This clearly demonstrates that a metallic SDW state could be solely induced by interactions of local magnetic moments, resembling the nature of antiferromagnetic order in cuprate parent compounds.
description: 5 pages, 4 figures
An analysis of the possible thermal emission at radio frequencies from an evolved supernova remnant HB 3 (G132.7 + 1.3): revisited
Creators: name: Onić, D.
name: Urošević, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It has recently been reported that some of the flux density values for an evolved supernova remnant (SNR) HB 3 (G132.7 + 1.3) are not accurate. In this work we revised an analysis of the possible thermal emission at radio frequencies from the SNR HB 3 using the recently published, corrected, flux density values. A model including a sum of non-thermal (purely synchrotron) and thermal (bremsstrahlung) component is applied for fitting integrated radio spectrum of the SNR. The contribution of thermal component in total volume emissivity at $1 \mathrm{GHz}$ was estimated to be $\approx37 %$. The ambient density was also estimated to be $n\approx 9 \mathrm{cm}^{-3}$ for the $\mathrm{T}=10^{4} \mathrm{K}$. Again, we obtained the relatively significant presence of thermal emission at radio frequencies from the SNR so we could support interaction between SNR HB 3 and adjacent molecular cloud associated with the H {\sc ii} region W3. Our model estimates for thermal component contribution to total volume emissivity at $1 \mathrm{GHz}$ and ambient density are similar to those obtained earlier ($\approx40 %$, $\approx10 \mathrm{cm^{-3}}$). It is clear that the corrected flux density values do not change the basic conclusions.
description: 6 pages, 1 figure
Graduate Quantum Mechanics Reform
Creators: name: Carr, L. D.
name: McKagan, S. B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: We address four main areas in which graduate quantum mechanics education can be improved: course content, textbook, teaching methods, and assessment tools. We report on a three year longitudinal study at the Colorado School of Mines using innovations in all these areas. In particular, we have modified the content of the course to reflect progress in the field in the last 50 years, used textbooks that include such content, incorporated a variety of teaching techniques based on physics education research, and used a variety of assessment tools to study the effectiveness of these reforms. We present a new assessment tool, the Graduate Quantum Mechanics Conceptual Survey, and further testing of a previously developed assessment tool, the Quantum Mechanics Conceptual Survey. We find that graduate students respond well to research-based techniques that have been tested mainly in introductory courses, and that they learn much of the new content introduced in each version of the course. We also find that students' ability to answer conceptual questions about graduate quantum mechanics is highly correlated with their ability to solve calculational problems on the same topics. In contrast, we find that students' understanding of basic undergraduate quantum mechanics concepts at the modern physics level is not improved by instruction at the graduate level.
description: accepted to American Journal of Physics
Dynamical symmetry of Dirac hydrogen atom with spin symmetry and its connection with Ginocchio's oscillator
Creators: name: Zhang, Fu-Lin
name: Fu, Bo
name: Chen, Jing-Ling
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Dirac hydrogen atom with spin symmetry is shown has a SO(4) symmetry. The generators are derived, and the corresponding Casimir operator leads to the energy spectrum naturally. This type hydrogen atom is connected to a four-dimensional Dirac system with equal scalar and vector harmonic oscillator potential, by the Kustaanheimo-Stiefel transformation with a constraint.
description: 3 pages,Accepted by PRA as a Rapid Communication
Abundance variations in the globular cluster M71 (NGC 6838)
Creators: name: Alves-Brito, A.
name: Schiavon, R. P.
name: Castilho, B.
name: Barbuy, B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Abundance variations in moderately metal-rich globular clusters can give clues about the formation and chemical enrichment of globular clusters. CN, CH, Na, Mg and Al indices in spectra of 89 stars of the template metal-rich globular cluster M71 are measured and implications on internal mixing are discussed. Stars from the turn-off up to the Red Giant Branch (0.87 $
description: Paper accepted for publication in Astronomy and Astrophysics
Association of the 3:2 HFQPO Pairs with the Broad Fe K Line in XTE J1550-564 and GRO J1655-40
Creators: name: Wang, Ding-Xiong
name: Gan, Zhao-Ming
name: Huang, Chang-Yin
name: Li, Yang
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Association of the high-frequency quasi-periodic oscillation (HFQPO) pairs with the broad Fe K line in XTE J1550-564 and GRO J1655-40 is discussed based on the magnetic coupling (MC) of a rotating black hole (BH) with its surrounding disc. The 3:2 HFQPO pairs are interpreted by virtue of the inner and outer hotspots arising from non-axisymmetric magnetic field, where the inner hotspot is produced by a torque exerted at the inner edge of the disc, and the outer hotspot is created by the screw instability of the large-scale magnetic field. The very steep emissivity index is created predominantly by the torque exerted at the inner edge of the disc. It turns out that the 3:2 HFQPO pairs observed in the two sources can be fitted by tuning several model parameters, such as the BH spin, and the main features of this model lie in three aspects. (1) The condition for only one HFQPO is discussed based on the two mechanisms for producing the 3:2 HFQPO pairs, (2) an explanation is given for a systematic shift away from disc dominated flux with the increasing power-law flux as the HFQPO pairs shift from the higher to lower frequencies, which is consistent with the analysis given by Remillard et al. (2002), and (3) the BH spin in XTE J1550-564 and GRO J1655-40 can be estimated by combining the 3:2 HFQPO pairs with the very steep emissivity index required for fitting the broad Fe K emission line.
description: 13 pages,8 figures, 2 tables, accepted by MNRAS, Sept 16, 2008
Soft Confusion Matrix Classifier for Stream Classification
Creators: name: Trajdos, Pawel
name: Kurzynski, Marek
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this paper, the issue of tailoring the soft confusion matrix (SCM) based classifier to deal with stream learning task is addressed. The main goal of the work is to develop a wrapping-classifier that allows incremental learning to classifiers that are unable to learn incrementally. The goal is achieved by making two improvements in the previously developed SCM classifier. The first one is aimed at reducing the computational cost of the SCM classifier. To do so, the definition of the fuzzy neighborhood of an object is changed. The second one is aimed at effective dealing with the concept drift. This is done by employing the ADWIN-driven concept drift detector that is not only used to detect the drift but also to control the size of the neighbourhood. The obtained experimental results show that the proposed approach significantly outperforms the reference methods.
GM 2019 - Variable and Distributed Energy Resources Integration and Provision of Flexibility through Energy Systems Integration
Creators: J. Price
A. Orths
F. Albuyeh
Publisher: name: IEEE
Year: 2019

Technical Session
The electric industry landscape is undergoing fundamental changes due to a combination of factors including the proliferation of Distributed Energy Resources (DERs), new technologies, electrification of transportation, and the emergence of increasingly savvy prosumers (consumers with distributed generation sources). These changes have fundamental impacts on power system operation both at the bulk power and distribution levels. Ensuring sufficient operational flexibility is a necessary part of operations in systems with high penetrations of variable and distributed generation. This panel session focuses on emerging solutions, policies, and operational models leveraging demand-side assets and energy systems integration as flexible resources in support of bulk power operations.
On the parametrisation of motion kinematics for experimental aerodynamic optimisation
Creators: name: Busch, Christoph
name: Gehrke, Alexander
name: Mulleners, Karen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The levels of agility and flight or swimming performance demonstrated by insects, birds, fish, and even some aquatic invertebrates, are often vastly superior to what even the most advanced human-engineered vehicles operating in the same regimes are capable of. Key to this superior locomotion is the animal's manipulation of the generation and shedding of vortices through optimal control of their motion kinematics. Many research efforts related to biological and bio-inspired propulsion focus on understanding the influence of the motion kinematics on the propulsion performance and on optimising the kinematics to improve efficiency or manoeuvrability. One of the first challenges to tackle when conducting a numerical or experimental optimisation of motion kinematics of objects moving through a fluid is the parameterisation of the motion kinematics. In this paper, we present three different approaches to parameterise kinematics, using a set of control points that are connected by a spline interpolation, a finite Fourier series, and a reduced order modal reconstruction based on a proper orthogonal decomposition of a set of random walk trajectories. We compare the results and performance of the different parameterisations for the example of an experimental multi-objective optimisation of the pitching kinematics of a robotic flapping wing device. The optimisation was conducted using a genetic algorithm with the objective to maximise stroke average lift and efficiency. The performance is evaluated with regard to the diversity of the randomly created initial populations, the convergence behaviour of the optimisation, and the final Pareto fronts with their corresponding fitness values.
Generating Informative Conclusions for Argumentative Texts
Creators: name: Syed, Shahbaz
name: Al-Khatib, Khalid
name: Alshomary, Milad
name: Wachsmuth, Henning
name: Potthast, Martin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: The purpose of an argumentative text is to support a certain conclusion. Yet, they are often omitted, expecting readers to infer them rather. While appropriate when reading an individual text, this rhetorical device limits accessibility when browsing many texts (e.g., on a search engine or on social media). In these scenarios, an explicit conclusion makes for a good candidate summary of an argumentative text. This is especially true if the conclusion is informative, emphasizing specific concepts from the text. With this paper we introduce the task of generating informative conclusions: First, Webis-ConcluGen-21 is compiled, a large-scale corpus of 136,996 samples of argumentative texts and their conclusions. Second, two paradigms for conclusion generation are investigated; one extractive, the other abstractive in nature. The latter exploits argumentative knowledge that augment the data via control codes and finetuning the BART model on several subsets of the corpus. Third, insights are provided into the suitability of our corpus for the task, the differences between the two generation paradigms, the trade-off between informativeness and conciseness, and the impact of encoding argumentative knowledge. The corpus, code, and the trained models are publicly available.
Electronic Structure of Prototype AFe_2As_2 and ReOFeAs High-Temperature Superconductors: a Comparison
Creators: name: Nekrasov, I. A.
name: Pchelkina, Z. V.
name: Sadovskii, M. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have performed ab initio LDA calculations of electronic structure of newly discovered prototype high-temperature superconductors AFe_2As_2 (A=Ba,Sr) and compared it with previously calculated electronic spectra of ReOFeAs (Re=La,Ce,Pr,Nd,Sm). In all cases we obtain almost identical densities of states in rather wide energy interval (up to 1 eV) around the Fermi level. Energy dispersions are also very similar and almost two-dimensional in this energy interval, leading to the same basic (minimal) model of electronic spectra, determined mainly by Fe d-orbitals of FeAs layers. The other constituents, such as A ions or rare earths Re (or oxygen states) are more or less irrelevant for superconductivity. LDA Fermi surfaces for AFe_2As_2 are also very similar to that of ReOFeAs. This makes the more simple AFe_2As_2 a generic system to study high-temperature superconductivity in FeAs - layered compounds.
description: 5 pages, 7 figures, v2: corrected typos and Fig. 6
GM 2019 - Distributed Demand Response Dilemma: Defect or Engage
Creators: J. Mathieu
A. Conejo
B. Hobbs
A. Papavasiliou
Publisher: name: IEEE
Year: 2019

Technical Session
Penetration levels of standalone DERs and smart technologies continuously increase, offering consumers an unprecedented set of options to meet their demand for electric energy services. The ability to choose an electricity supplier from a diverse pool with traditional utilities, innovative demand response load aggregators and multiple standalone service providers invigorates competition at the distribution level. As a result of this competition, third-party providers may be able to offer more lucrative incentives for DERs to defect traditional utilities. If the grid operator, market operator and/or regulating bodies fail to provide proper price signals, consumers and standalone DERs may opt to defect from the grid and cease providing grid support services, thus further exacerbating lack of control options at the distribution level. This risk motivates an overhaul in utility-scale DR programs and market designs that would ensure resource adequacy for cost-efficient and reliable system operations. This panel will look into this problem from the perspective of consumers and standalone DERs, and comprehensively weigh in costs and benefits related to defecting utilities or engaging with utilities under new, revisited DR programs. The panel will address how the defect-or-engage dilemma affects the bottom line of utilities and describe necessary changes to their business models.
Reduction of Open String Amplitudes by Mostly BRST Exact Operators
Creators: name: Seki, Shigenori
name: Takahashi, Tomohiko
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study two and three-point tree-level amplitudes of open strings. These amplitudes are reduced from higher-point correlation functions by using mostly BRST exact operators for gauge fixing. For simplicity, we focus on an open string tachyon. The two-point amplitude of open string tachyons is reduced from a three-point function of two tachyon vertex operators and one mostly BRST exact operator. Similarly the three-point amplitude is from a four-point function of three tachyon vertex operators and one mostly BRST exact operator. One can also obtain the two-point amplitude from the four-point function of two tachyon vertex operators and two mostly BRST exact operators. In these derivation from four-point functions, moduli integrals are significant. We discuss the overall signs of amplitudes which are indefinite in this formalism.
description: 1+12 pages, 1 figure; v2: short explanation added in p. 7 and typos corrected
GM 2019 - Frontiers of Big Data Analytics in the Operations and Maintenance of Power Distribution Systems
Creators: A. Pahwa
S. Feng
Y. Gao
Publisher: name: IEEE
Year: 2019

Technical Session
Advanced sensor systems such as advanced metering infrastructure have seen widespread adoption in the world. The modeling, monitoring and control of power distribution systems can be significantly enhanced by leveraging the large amount of data collected through the sensor systems in the distribution grids. However, strategies for unlocking the potential of big data in distribution systems are at an early stage of development. This panel will bring together speakers from industry and academia to share their experience and best practices about data-driven analytics in the operation and maintenance of power distribution systems. The panel session will also identify the road map for future research in this area.
PROMOTING CERVICAL CANCER SCREENING IN TRANSGENDER MALES: BARRIERS TO CARE
Creators: name: Weiss, Maggie Lizardi
Publisher: name: Zenodo
Year: 2018

description: Introduction: Cervical cancer (CC) screening or Papanicolaou (Pap) testing has successfully decreased mortality amongst women. National recommendations have resulted in published guidelines for CC prevention, including specific age recommendations that facilitate provider compliance with the conduct of these important health care screenings. Despite the availability of resources, access to CC screening (Pap smear) within the female-to-male or Transgender Men (TM) population is much less frequent as compared to non-transgender women. Background: According to the literature, the failure of TM to disclose their sexual orientation (SO) and gender identity (GI) are often caused by factors such as provider discrimination, bias, and neglect. This is turn results in a patient-provider relationship where open communication does not occur, leading to suboptimal care practices. An effective way to address this barrier is to create a welcoming environment by integrating SO and GI into the encounter history, as well as in the Electronic Health Record (EHR), in hopes of promoting self-identification and disclosure. Methods: This project utilized retrospective chart reviews to evaluate the pre- and post- implementation of SO and GI intake forms introduced at a Los Angeles based health care institution between the years 2014 and 2015. A population sampling technique was used to identify TMs who received annual physicals within the Primary Care Department between January 1, 2013 to December 31, 2013 pre-implementation and January 1, 2016 to December 31, 2016 post-implementation of these new forms. iv Discussion: The number of TM patients who were offered and completed CC screening (pap smear) decreased from 62.5% (15 of 24 patients) in 2013 to 52.6% (20 of 38 patients) in 2016, despite the implementation of gender neutral forms and higher selfidentification of TM patients. Results support the need for further training of providers on how to provide gynecologic care to the TM population. Integrating SO and GI forms within a healthcare institution are key first steps in eliminating and overcoming barriers, but are not sufficient as a stand-alone intervention to promote TM equitable care. What may prove to be even more critical may be the presence of an open, trusting and respectful relationship between healthcare providers and their transgender male clients.
GM 2019 - The New HVDC Grid and Related Activities in Europe
Creators: F. Schettler
H. Koch
Publisher: name: IEEE
Year: 2019

Technical Session
The energy revolution in Europe places new requirements on the transmission grid. If it comes to large scale wind power integration in the north of Europe, as well as bulk solar power production in south, long distance bulk power transmission becomes integral part of an entirely new power system where new controllable devices will operate to make transmission smarter and more efficient. In the last consequence, a new network layer based on HVDC technology may arise which is referred to as an overlay grid in Europe. This session is about activities carried out in Europe and focusing offshore HVDC grids, recent HVDC projects in Europe as well as on meshed HVDC grids in terms of visions, technology and operational issues.
New Experimental limit on Optical Photon Coupling to Neutral, Scalar Bosons
Creators: name: Afanasev, A.
name: Baker, O. K.
name: Beard, K. B.
name: Biallas, G.
name: Boyce, J.
name: Minarni, M.
name: Ramdon, R.
name: Shinn, M.
name: Slocum, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report on the first results of a sensitive search for scalar coupling of photons to a light neutral boson in the mass range of approximately 1.0 milli-electron volts and coupling strength greater than 10$^-6$ GeV$^-1$ using optical photons. This was a photon regeneration experiment using the "light shining through a wall" technique in which laser light was passed through a strong magnetic field upstream of an optical beam dump; regenerated laser light was then searched for downstream of a second magnetic field region optically shielded from the former. Our results show no evidence for scalar coupling in this region of parameter space.
description: pdf-file, 10 pages, 4 figures, submitted to Physical Review Letters
GM 2019 - Analytic Methods for Power Systems Distribution System Analysis Committee Poster Session
Creators: A. Hoke
A. Renjit
Publisher: name: IEEE
Year: 2019

Technical Session
This presentation was part of the 2019 IEEE PES General Meeting (GM), sponsored by the IEEE Power & Energy Society (PES). The conference was held August 4-8, 2019 in Atlanta, Georgia.
GM 2019 - Transactive System Theory
Creators: A. Annaswamy
D. Hammerstrom
F. Rahimi
S. Bose
B. Bhattarai
J. Lian
P. Wang
K. Ma
V. Subramanian
S. Bhattacharya
Publisher: name: IEEE
Year: 2019

Technical Session
Transactive systems combine economic and control principles for dynamic, value-based management of systems like electric power systems. This panel session invites discussion of both economic and control theory on which these systems are based.
GM 2019 - Impact of Inverter-Based Photovoltaic Generation on Power Quality on T&D Network in the Southeastern Region of the US
Creators: D. Mueller
R. Ramos
M. McVey
T. Murphy
Publisher: name: IEEE
Year: 2019

Technical Session
Over the last 5 years, the Southeastern Region of the US has seen tremendous growth of inverter-based photovoltaic generation connecting to the Transmission and Distribution Networks. Power quality issues arising by interconnecting inverter-based generation are at the forefront for utility engineers. This panel session will include presentations from industry experts on minimum requirements and lessons learned from actual projects in the region. Furthermore, recent regional case studies, along with field measurement data, will be presented and examined.
GM 2019 - Recent HVDC and FACTS Refurbishments, Installations, Controls and Choices
Creators: N. Kirby
F. Ceja-Gomez
A. Bailey
S. Kolluri
J. Caspary
Publisher: name: IEEE
Year: 2019

Technical Session
This panel will discuss the current ongoing development in HVDC and solid state electronic application projects in the world. The panel will also discuss operational issues related to HVDC installations and the economics of the operations.