cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Social health insurance in the Philippines: do the poor really benefit?
Creators: name: El Omari, Salaheddine
name: Karasneh, Mahmoud
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Banking, finance and investment
Applied economics

description: Developing countries have spent a tremendous amount of time and money on social health insurance programs to give the low-income population free access to health care services. Standard economic theory predicts that people use care services more frequently and regularly when they are free. In this paper, we show that providing free access to health services might not be enough to enhance the utilization of health care by indigents.Other Information Published in: Journal of Economics and Finance
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s12197-020-09525-5
Properties of Composite Thin Films of Titania Nanofibers and Safranin O Dye: Electrical and Optical Properties
Creators: name: Drabik, M.
name: Touskova, J.
name: Kobayashi, H.
name: Biederman, H.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
Organic-based PV

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 587-589
description: In this study, composite thin films of titania (TiO2) nanofibers and safranin O dye (SAF) were
researched. Safranin is water-soluble which makes the preparation of thin films from a solution very straightforward.
Titania nanofibers were prepared by electrospinning technique from titanium tetraisoproxide (TTIP) precursor
solution. The composite thin film samples were characterized by a variety of methods with respect to the preparation
conditions of the films. Special attention was paid to their optical and electrical properties. Measurement of currentvoltage
(I-V) characteristics was performed on the prepared nanocomposite thin films together with measurement of
their transmittance in ultra-violet and visible spectral ranges (UV-Vis). Various electrical parameters were presented
and discussed.
Return to Play After a Lateral Ligament Ankle Sprain
Creators: name: D’Hooghe, P.
name: Cruz, F.
name: Alkhelaifi, K.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Clinical sciences

description: Purpose of Review The purpose of this review is to describe the current evidence on the most common sports-related ankle injuries. Joint anatomy, epidemiology, clinical findings, diagnostic approach, and treatment are presented with a specific focus on the available evidence towards return to play. Recent Findings Recent findings show that ankle sprain is the most common injury in the world of sports. Bony fractures, cartilage defects, and syndesmotic lesions are frequently seen in association with the more severe type of ankle sprains. Summary In summary, the majority of the athletes’ ankle sprains are managed conservatively with excellent outcomes and full return to their pre-injury level of play. However, it is essential to differentiate the single ligament sprain from a more complex injury to the ankle joint. The evidence-based treatment and rehabilitation programmes are associated with a better prognosis and a faster time to return to sport participation.Other Information Published in: Current Reviews in Musculoskeletal Medicine
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s12178-020-09631-1
A criterion for reflectiveness of normal extensions
Creators: name: Montoli, Andrea
name: Rodelo, Diana
name: Van der Linden, Tim
Publisher: name: arXiv
Year: 2016
Subjects: subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 20M32, 20M50, 11R32, 19C09, 18F30

description: We give a new sufficient condition for the normal extensions in an admissible Galois structure to be reflective. We then show that this condition is indeed fulfilled when X is the (protomodular) reflective subcategory of S-special objects of a Barr-exact S-protomodular category C, where S is the class of split epimorphic trivial extensions in C. Next to some concrete examples where the criterion may be applied, we also study the adjunction between a Barr-exact unital category and its abelian core, which we prove to be admissible.
description: 22 pages
Innovative Back Reflectors and Nanostructures for Photocurrent Enhancement in Thin Film Amorphous Silicon Solar Cells
Creators: name: Eminian, C.
name: Haug, F.-J.
name: Cubero, O.
name: Niquille, X.
name: Ballif, C.
name: Argenti, N.
name: Rybczynski, J.
name: Gao, Y.
name: Gao, W.
name: Kempa, K.
name: Ren, Z.F.
name: Naughton, M.J.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Thin Film Solar Cells
Amorphous and Microcrystalline Silicon Solar Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2767-2770
description: In thin-film silicon solar cells, the back reflector or substrate plays an essential role, enabling good
light trapping inside the cell. However, finding the ideal light trapping structures allowing for record current without
reduction in open-circuit voltage and fill factor remains a challenge. In this contribution, we experiment with new
kinds of back reflectors and nanostructures for n-i-p hydrogenated amorphous silicon solar cells, such as metallic
nanoparticles and nanopillars, with a potential for device improvement. Metallic nanoparticles show strong scattering
properties under light illumination due to localized surface plasmons, while nanopillars are designed to separate the
light path, along the nanopillar, and the electric field in order to insure a high current density with a thin absorber
layer. By the incorporation of nanoparticles or nanopillars into amorphous silicon solar cells in the n-i-p
configuration, we present a photocurrent enhancement of 20% and up to 70%, respectively. Efficiencies of 8% and
8.2% are reached on these structures and light-induced degradation is strongly reduced for nanopillars.
Spin transport in tilted electron vortex beams
Creators: name: Basu, Banasri
name: Chowdhury, Debashree
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this paper we have enlightened the spin related issues of tilted Electron vortex beams. We have shown that in the skyrmionic model of electron we can have the spin Hall current considering the tilted type of electron vortex beam. We have considered the monopole charge of the tilted vortex as time dependent and through the time variation of the monopole charge we can explain the spin Hall effect of electron vortex beams. Besides, with an external magnetic field we can have a spin filter configuration.
description: Conference proceedings in ICNPAA 2014
Benefits of Range-separated Hybrid and Double-Hybrid Functionals for a Large and Diverse Dataset of Reaction Energies and Barrier Heights
Creators: name: Santra, Golokesh
name: Calinsky, Rivka
name: Martin, Jan M. L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: To better understand the thermochemical kinetics and mechanism of a specific chemical reaction, an accurate estimation of barrier heights (forward and reverse) and reaction energy are vital. Due to the large size of reactants and transition state structures involved in real-life mechanistic studies (e.g., enzymatically catalyzed reactions), DFT remains the workhorse for such calculations. In this paper, we have assessed the performance of 88 density functionals for modeling the reaction energies and barrier heights on a large and chemically diverse dataset (BH9) composed of 449 organic chemistry reactions. We have shown that range-separated hybrid functionals perform better than the global hybris for BH9 barrier heights and reaction energies. Except for the PBE-based range-separated nonempirical double hybrids, the exchange term's range separation helps improve the performance for barrier heights and reaction energies. The sixteen-parameter Berkeley double hybrid, ωB97M(2), performs remarkably well for both properties. However, our minimally empirical range-separated double hybrid functionals offer marginally better accuracy than ωB97M(2) for BH9 barrier heights and reaction energies.
description: J. Phys. Chem. A, revised (Vincenzo Barone festschrift)
Soft-photon radiation in high-energy proton-proton collisions within the tensor-Pomeron approach: Bremsstrahlung
Creators: name: Lebiedowicz, Piotr
name: Nachtmann, Otto
name: Szczurek, Antoni
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We discuss diffractive processes in proton-proton collisions at small momentum transfers without and with photon radiation. We consider the soft exclusive reactions $pp \to pp$, $p\bar{p} \to p\bar{p}$, and $pp \to pp γ$ within the tensor-pomeron and vector-odderon approach. We compare our results with the data for $pp$ and $p\bar{p}$ total cross sections, for the ratio of real to imaginary part of the forward scattering amplitude, and for the elastic $pp$ cross sections, especially those from TOTEM. To describe the low-energy data more accurately the secondary reggeons must be included. We write down the amplitudes for the photon bremsstrahlung in high-energy proton-proton collisions using the tensor-pomeron model. These results are relevant for the c.m. energies presently available at the Relativistic Heavy Ion Collider and at the LHC. We present predictions for the proposed measurements of soft photons with the planned future upgrade of the ALICE experiment at the LHC. We investigate the limits of applicability of the soft-photon approximation (SPA) based on Low's theorem. The corresponding SPA results are compared to those obtained from our complete model. The regions of phase space are given quantitatively where SPA and our complete tensor-pomeron results are close to each other. As an example, let $k_{\perp}$, $\rm y$, and $ω$, be the absolute value of the transverse momentum, the rapidity, and the energy of the photon, respectively, in the overall c.m. system. For the region $1 \; {\rm MeV} < k_{\perp} < 100 \; {\rm MeV}$ and $3.5 < |\rm y| < 5.0$, we find that the SPA Ansatz with only the pole terms $\propto ω^{-1}$ agrees at the percent level with our complete model result up to $ω\cong 2$ GeV.
description: 44 pages, 18 figures, Comments on the photon radiation in connection with diffractive excitation of the proton were added
The Fine Structure Constant and Habitable Planets
Creators: name: Sandora, McCullen
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use the existence of habitable planets to impose anthropic requirements on the fine structure constant, $α$. To this effect, we present two considerations that restrict its value to be very near the one observed. The first, that the end product of stellar fusion is iron and not one of its neighboring elements, restricts $α^{-1}$ to be $145\pm 50$. The second, that radiogenic heat in the Earth's interior remains adequately productive for billions of years, restricts it to be $145\pm9$. A connection with the grand unified theory window is discussed, effectively providing a route to probe ultra-high energy physics with upcoming advances in planetary science.
description: 24 pages, 4 figures
Impact of Ammonia Pretreatment of the Silicon Surface Prior to the Deposition of Silicon Nitride Layer by PECVD
Creators: name: Fourmond, E.
name: Dupuis, J.
name: Marcq, F.
name: Dubois, C.
name: Lemiti, M.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Cells and Materials, Processing Technology of

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1629-1632
description: PECVD Hydrogenated silicon nitride is widely used for Silicon solar cell as antireflection coating and passivation layer. This kind of layer exhibits a high hydrogen content, which is likely to diffuse during thermal step, leading to a chemical change of within the layer and at the interface. Thus a problem of adherence of silicon nitride, called blistering, may occur after rapid thermal anneal. NH3 or N2 plasma pretreatment has been here applied before deposition step for standard and Si-rich silicon nitride. Both treatments have successfully prevented surface to blister. In term of passivation, this pretreatment degrades the surface velocity recombination after deposition, but high lifetimes are recovered after anneal, particularly for NH3. The treatment is efficient starting from 30s. Ammonia plasma cleans the surface of the silicon by removing carbon, but not does N2. No nitridation of the surface is observed due to this pretreatment, and the native silicon oxide is not removed.
Multi-class Classification with Fuzzy-feature Observations: Theory and Algorithms
Creators: name: Ma, Guangzhi
name: Lu, Jie
name: Liu, Feng
name: Fang, Zhen
name: Zhang, Guangquan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The theoretical analysis of multi-class classification has proved that the existing multi-class classification methods can train a classifier with high classification accuracy on the test set, when the instances are precise in the training and test sets with same distribution and enough instances can be collected in the training set. However, one limitation with multi-class classification has not been solved: how to improve the classification accuracy of multi-class classification problems when only imprecise observations are available. Hence, in this paper, we propose a novel framework to address a new realistic problem called multi-class classification with imprecise observations (MCIMO), where we need to train a classifier with fuzzy-feature observations. Firstly, we give the theoretical analysis of the MCIMO problem based on fuzzy Rademacher complexity. Then, two practical algorithms based on support vector machine and neural networks are constructed to solve the proposed new problem. Experiments on both synthetic and real-world datasets verify the rationality of our theoretical analysis and the efficacy of the proposed algorithms.
description: This article has been accepted by IEEE Transactions on Cybernetics on June 4, 2022
Passivating and Physico-Chemical Properties of Silicon Nitride Deposited by Atmospheric Pressure Plasma for Photovoltaic Applications
Creators: name: Lecouvreur, P.
name: Larrieu, J.
name: Naude, N.
name: Quoizola, S.
name: Pouliquen, S.
name: Picard, C.
name: Beche, E.
name: Bererd, N.
name: Gherardi, N.
name: Monna, R.
name: Pirot, M.
name: Jahan, D.
name: Cuevas, A.
name: Massines, F.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Cells and Materials, Processing Technology of

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1581-1585
description: This work is the first step of a study of antireflecting and passivating properties of Hydrogenated Silicon Nitride films (SiNx:Hy) made with a new atmospheric pressure PECVD process. Photovoltaic properties are correlated with physico-chemical ones. Films are deposited with a laboratory scale system of Atmospheric Pressure Plasma Enhanced Chemical Vapor Deposition (AP-PECVD) using Ar, SiH4 and NH3 gas mixtures. According to
experimental parameters such as the ammonia to silane ratio and the substrate temperature, the surface passivation is determined on FZ silicon wafer by photoconductance decay measurements. The evolution during the days following the deposit realization is also studied. The refractive index and the extinction coefficient are determined from ellipsometry measurements. The chemical composition of the SiNx:Hy is studied by Fourier Transformed InfraRed spectroscopy (FTIR), Secondary Ion Mass Spectroscopy (SIMS), X-ray Photoelectron Spectroscopy (XPS), and Elastic Recoil Detection Analysis (ERDA). Scanning Electron Microscopy (SEM) photographs coupled to the other diagnostics gives informations on the layer morphology. SiNx:Hy films deposited at atmospheric pressure passivate the surface of silicon wafers even if there is presence of porosity, dense layers are achieved for deposit temperatures above 330°C with a good chemical and morphological homogeneity.
Study of Local Properties of Silicon Solar Cells
Creators: name: Skarvada, P.
name: Tomanek, P.
name: Macku, R.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Cells and Materials, Processing Technology of

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1644-1647
description: Study of optical and photoelectrical properties of solar cells is important for cell development and its optimizing. A scanning near-field optical microscope (SNOM) proves to be an invaluable tool for studying (not only) monocrystalline silicon solar cells in microscale resolution. It does not reach as high a resolution as the atomic force microscope (AFM), but it makes the local optical excitation of specimen possible. With regard to the nature of the surface of the solar cell under investigation, the resolution of modified SNOM is more than sufficient. Topography, local reflective power and electrical response measurements of the solar cell are performed in the microscale, even nanoscale resolution. Lock-in nanovoltmetr is used for solar cell local electric response measurement. All of the mentioned measurements can be carried out simultaneously at the same point of the solar cell surface, which is a great benefit of this method. Relationships between the images obtained in the various measurements can easily be evaluated. We have investigated at which points of the surface the efficiency of the optical radiation to electric energy conversion is maximum and tried to identify structure defects in the surface.
The Transverse velocity of the Andromeda system, derived from the M31 satellite population
Creators: name: Salomon, J. -B.
name: Ibata, R. A.
name: Famaey, B.
name: Martin, N. F.
name: Lewis, G. F.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a dynamical measurement of the tangential motion of the Andromeda system, the ensemble consisting of the Andromeda Galaxy (M31) and its satellites. The system is modelled as a structure with cosmologically-motivated velocity dispersion and density profiles, and we show that our method works well when tested using the most massive substructures in high-resolution Lambda Cold Dark Matter simulations. Applied to the sample of 40 currently-known galaxies of this system, we find a value for the transverse velocity of 164.4 +/- 61.8 km/s (v_East = -111.5 +/- 70.2 km/s and v_North = 99.4 +/- 60.0 km/s), significantly higher than previous estimates of the proper motion of M31 itself. This result has significant implications on estimates of the mass of the Local Group, as well as on its past and future history.
description: 10 pages, 5 figures, accepted for publication in MNRAS, replacement of one panel in Figure 5
0.8% Higher Efficiency by Low Temperature Back Contact
Creators: name: Ehling, C.
name: Merz, R.
name: Müller, J.W.
name: Hlusiak, M.
name: Rostan, P.J.
name: Werner, J.H.
name: Schubert, M.B.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Cells and Materials, Processing Technology of

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1657-1659
description: Replacing the aluminum back contact of idustrial screen-printed monocrystalline silicon solar cells by a novel low temperature layer sequence boosts the absolute power conversion efficiency  by  = 0.8 % up to  = 17.4 %. At a process temperature Tp ≤ 160°C, the optimized hydrogenated amorphous silicon (a-Si:H) based back side junction provides efficient back side passivation and contacting at the same time, with no patterning steps required. The improved passivation quality reduces the effective surface recombination velocity Seff to Seff < 20 cm s-1. Due to the optimized back side layer sequence, the open circuit voltage VOC rises by VOC = 20 mV up to VOC = 636 mV and the short circuit current increases by JSC = 0.6 mA cm-2. Furthermore, the improved back side passivation, together with the improved optical properties of our novel layer sequence leads to a higher sensitivity in the infrared wavelength regime. This results in an absolute enlargement of the effective diffusion length
Leff by Leff = 370 μm.
MPEC 2023-S250 : 2023 SS7
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 SS7

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Future PV Directions: VLS-PV Roadmap Toward 2100
Creators: name: Komoto, K.
name: Kurokawa, K.
name: Ito, M.
name: Faiman, D.
name: Van Der Vleuten, P.
Publisher: name: WIP-Munich
Year: 2009
Subjects: PV Deployment
Markets for PV Systems

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 4475-4477
description: The objective of IEA PVPS Task8 is to examine and evaluate the potential of Very Large Scale
Photovoltaic Power Generation (VLS-PV) Systems on desert areas, which have a capacity ranging from multi-
Megawatt to Gigawatt, and to develop practical project proposals for implementing the VLS-PV systems in desert
regions. The Task8 started in 1999. Based on the results since 1999, we’ve come to the conclusion that desert regions
contain an abundant and inexhaustible source of clean energy and that very large scale solar electricity generation
provides economic, social and environmental benefits, security of electricity supply and fair access to affordable and
sustainable energy solutions. In the future, VLS-PV systems would be able to become an option for many large
remote and desert regions in the world. In this paper, a VLS-PV roadmap towards 2100 was proposed.
Physical origin of the dark spot at the image of supermassive black hole SgrA* revealed by the EHT collaboration
Creators: name: Dokuchaev, Vyacheslav I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We elucidate the physical origin of the dark spot in the image of supermassive black hole SgrA* presented very recently by the EHT collaboration. It is argued that this dark spot, which is noticeably smaller than the classical black hole shadow, is the northern hemisphere of the event horizon globe. The classical black hole shadow is unseen in the image of SgrA*. The dark spot in the image of SgrA* is projected within the position of the classical black hole shadow on the celestial sphere. The outer boundary of this dark spot is an equator on the event horizon globe.
description: 8 pages, 1 figure
Resonant excitation of the spin-wave current in hybrid nanostructures
Creators: name: Lyapilin, I. I.
name: Okorokov, M. S.
name: Ustinov, V. V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using the non-equilibrium statistical operator method (NSO), we have investigated the spin transport through the interface in a semiconductor/ferromagnetic insulator hybrid structure. We have analyzed the approximation of effective parameters, when each of the considered subsystems (conduction electrons, magnons, and phonons) is characterized by its effective temperature. We have constructed the macroscopic equations, describing the spin-wave current caused by both resonantly excited spin system of conduction electrons and by an inhomogeneous thermal field in the ferromagnetic insulator.
A free parametrized TOV: Modified Gravity from Newtonian to Relativistic Stars
Creators: name: Velten, Hermano
name: Oliveira, Adriano M.
name: Wojnar, Aneta
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We test a free {\it ad hoc} parametrization of the Tolman-Oppenheimer-Volkoff (TOV) equation. We do not have in mind any specific extended theory of gravity (ETG) but each new parameter introduced has a physical interpretation. Our aim is fully pedagogical rather than a proposal for a new ETG. Given a realistic neutron star equation of state we map the contributions of each new parameter into a shift in trajectories of the mass-radius diagram. This exercise allows us to make the correspondence between each TOV sector with possible modifications of gravity and clarifies how neutron star observations are helpful for distinguishing theories.
description: 8 pages and 1 figure. To the proceedings of Modern Physics of Compact Stars 2015-Yerevan
An accurate evaluation of electron (anti-)neutrino scattering on nucleons
Creators: name: Ricciardi, Giulia
name: Vignaroli, Natascia
name: Vissani, Francesco
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We discuss as accurately as possible the cross section of quasi-elastic scattering of electron (anti-)neutrinos on nucleons, also known as inverse beta decay in the case of antineutrinos. We focus on the moderate energy range from a few MeV up to hundreds of MeV, which includes neutrinos from reactors and supernovae. We assess the uncertainty on the cross section, which is relevant to experimental advances and increasingly large statistical samples. We estimate the effects of second-class currents, showing that they are small and negligible for current applications.
description: v2: minor improvements (numerical values of the cross section added), version accepted for publication in JHEP
Harmonization of traumatic stress research data
Creators: name: Kassam-Adams, Nancy
Publisher: name: Zenodo
Year: 2023
Subjects: metadata; harmonization; posttraumatic stress

description: Presentation as part of Panel on "Metadata Provider Perspectives on Longitudinal Data Harmonization" Panel abstract: Data harmonization allows data collected by different studies or at different time periods to be more similar and comparable. Whether this is done retrospectively or prospectively the data for a particular harmonization will often be constrained by the specifics of the research question. Data providers, or metadata providers have a wider role in assisting a large number of potential users of the data, to discover data items which are or could potentially be comparable in a range of unspecified scenarios. Such an undertaking requires a shift in perspective from “harmonized data” to “harmonizable data” and constructing a generic framework to enable that to be carried out in a sustainable and scalable way. The panel discussion will bring together the experiences of a number of data and metadata providers and a software provider currently working to create such discoverable resources. Collectively the panel will be able to speak to a range of social science domains, political science, mental health, aging studies and multi-purpose cohort studies on how these challenges can be addressed using the DDI-Lifecycle metadata standard.
description: {"references": ["Kassam-Adams, Kenardy, Delahanty, Marsac, Meiser-Stedman, Nixon, Landolt, & Palmieri. (2020). Development of an international data repository and research resource: The Prospective studies of Acute Child Trauma and Recovery (PACT/R) Data Archive. European Journal of Psychotraumatology, 11 (1); doi: 10.1080/20008198.2020.1729025"]}
A Note on Quiver Yangians and $\mathcal{R}$-Matrices
Creators: name: Bao, Jiakang
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Algebraic Geometry (math.AG)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this note, we study possible $\mathcal{R}$-matrix constructions in the context of quiver Yangians and Yang-Baxter algebras. For generalized conifolds, we also discuss the relations between the quiver Yangians and some other Yangian algebras (and $\mathcal{W}$-algebras) in literature.
description: 48 pages; v2,v3,v4: minor corrections
Fractal trajectories of the dynamical system
Creators: name: Berezowski, Marek
Publisher: name: arXiv
Year: 2016
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: The scope of the paper is a theoretical analysis of the dynamical system, the model of which was reduced to Weierstrasse function. A fractal structure of the trajectory was proved and the entropy of the system information designated.
description: 11 pages. 13 figures. published in the Far East Journal of Dynamical Systems, Volume 13, Issue 1, 2010
Symplectic Polar Duality, Quantum Blobs, and Generalized Gaussians
Creators: name: de Gosson, Maurice
name: de Gosson, Charlyne
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 52A20, 52A05, 81S10, 42B35

description: We apply the notion of polar duality from convex geometry to the study of quantum covariance ellipsoids in symplectic phase space. We consider in particular the case of "quantum blobs" introduced in previous work; quantum blobs are the smallest symplectic invariant regions of the phase space compatible with the uncertainty principle in its strong Robertson--Schrödinger form. We show that these phase space units can be characterized by a simple condition of reflexivity using polar duality, thus improving previous results. We apply these geometric constructions to the characterization of pure Gaussian states in terms of partial information on the covariance ellipsoid, which allows us to formulate statements related to symplectic tomography.
description: Revised and corrected version to appear in "Symmetry"
LDL-C Targets in Secondary Prevention: How Low Should We Go?
Creators: name: Bayoumy, Karim
name: Gaber, Mohammed
name: Mani, Preethi
name: Puri, Rishi
name: Donnellan, Eoin
name: Cho, Leslie
name: Clark, Donald
name: Martin, Seth S.
name: Elshazly, Mohamed B.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Pharmacology and pharmaceutical sciences

description: The benefits of lowering low-density lipoprotein cholesterol (LDL-C), mainly using high-intensity statin therapy, and its impact on decreasing the recurrence of atherosclerotic cardiovascular disease (ASCVD) in secondary prevention has been well established. With the advent of non-statin medications, particularly PCSK-9 inhibitors, which can lower LDL-C to very low levels not seen before, it is important to answer some important questions regarding LDL-C lowering and the uses of these medications in clinical practice: how low should we go with LDL-C reduction? Is there a threshold beyond which lower LDL-C is not associated with any benefit and possibly harm? Does the benefit derived from more aggressive LDL-C lowering justify the cost of additional therapies? Our review has found overwhelming evidence to support the conclusion that lower achieved LDL-C levels correlate with a decreased burden of atherosclerosis and better clinical outcomes in secondary prevention. The concern for adverse effects with very low LDL-C levels is not backed by the literature, and side effects appear to be medication-specific. There still remains a question of the cost-effectiveness of some non-statin therapies particularly PCSK9 inhibitors, in spite of recent price decreases, and whether the benefit is worth the cost. It is prudent to always pursue an individualized patient-level approach to LDL-C lowering that considers the patient’s global cardiovascular risk, their side effect profile, and the cost-effectiveness of therapies in order to derive maximal benefit from aggressive lipid lowering.Other Information Published in: Current Cardiovascular Risk Reports
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s12170-019-0619-8
Grid-Parity Analysis for EU and US Regions and Market Segments - Dynamics of Grid-Parity and Dependence on Solar Irradiance, Local Electricity Prices and PV Progress Ratio
Creators: name: Breyer, C.
name: Gerlach, A.
name: Müller, J.
name: Behacker, H.
name: Milner, A.
Publisher: name: WIP-Munich
Year: 2009
Subjects: PV Deployment
Markets for PV Systems

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 4492-4500
description: Grid-parity is a very important milestone for further photovoltaic (PV) diffusion. A grid-parity model is presented,
which is based on levelized cost of electricity (LCOE) coupled with the experience curve approach. Relevant
assumptions for the model are given and its key driving forces are discussed in detail. Results of the analysis are
shown for all member states of the European Union and the United States of America, respectively. High PV industry
growth rates enable a fast reduction of LCOE. Depletion of fossil fuel resources and climate change mitigation forces
societies to internalize these effects and pave the way for sustainable energy technologies. In the EU and the US, first
grid-parity events will occur in late 2009 or early 2010 in Italy and Hawaii, respectively. The 2010s are characterized
by ongoing grid-parity events throughout the most regions in the EU and the US, reaching an addressable market of
about 90% and 65% of total electricity market, respectively. In parallel to grid-parity events, next milestones for PV
industry will be diesel-parity and natural gas-parity. Reaching grid-parity will require new political frameworks for
maximizing social benefits. PV technology is on the pathway to become a highly competitive energy technology.
The Influence of Absorbing Donors and Acceptors on the Efficiency for a Stacked and a Monolithic Organic Tandem Solar Cell
Creators: name: Minnaert, B.
name: Veelaert, P.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
Organic-based PV

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 627-630
description: In order for organic bulk heterojunction solar cells to compete with the traditional inorganic cells,
power conversion efficiencies of more than 10 % are desirable. A way to improve the efficiency is to use a tandem
configuration. In this article, we study the influence of the energy levels (HOMO and LUMO) of donor and acceptor
on the efficiency for a stacked and a monolithic organic tandem cell. First, we consider the case where only the donor
of each subcell is the absorber active material. Then, we consider the situation where both the donor and acceptor are
good absorbers; the photons absorbed in donor and acceptor are contributing to the output power of the solar cell. For
our calculations, we always take into account the organic nature of the photovoltaic cell by imposing a minimal
LUMO-difference, necessary for exciton dissociation. Ideal material characteristics are obtained from these
calculations. They give us an idea how the configuration of the energy levels of the active materials should ideally be
for stacked and monolithic organic tandem cells, and this for 2 situations: (i) only the donors absorbs light (ii) both
donors and acceptors absorb light. One result is that the requirements for an almost optimal configuration for the
stacked tandem cell are quite broad, permitting that the values of the bandgaps for optimal cells are not that strict.
This is not the case for the monolithic configuration; especially the value of the bandgap Eg1 of the first subcell is
more critical than for a stacked cell. Another result is that when both materials absorb light, the highest maximum
attainable efficiency reached is the same as in the case where only one material absorbs light, but higher efficiencies
are reached for materials which have not optimal energy levels.
Conservatives Are Happier than Liberals: the Mediating Role of Perceived Goal Progress and Flow Experience — a Pilot Study
Creators: name: Briki, Walid
name: Dagot, Lionel
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Applied and developmental psychology

description: Authors presume that conservatives would be happier than liberals because they would develop better mental adjustment especially under contextual threat. The present study aimed at examining whether self-regulatory factors (i.e., dispositional self-control, perception of goal progress, dispositional flow, and dispositional neurotic self-attentiveness) could mediate the link between conservatism and subjective well-being (SWB). It also aimed at testing the view that contextual threat (operationalized through undesired unemployment) may moderate the relationship between conservatism and the mediators under study. In order to examine this, 418 North-American participants from the United States (66.7% females and 33.3% males; Mage = 33.63, SDage = 11.64) answered questionnaires via an online platform, and structural equation model or path analyses were conducted. Main results revealed that: (a) conservatism positively predicted SWB, whereas undesired unemployment negatively predicted SWB; (b) perception of goal progress and dispositional flow fully mediated the conservative-SWB gap; and (c) dispositional self-control was highest in conservatives under contextual threat of undesired unemployment. Finally, this study suggests that conservatives can experience higher SWB because of adaptive cognitive adjustments. Moreover, this study suggests that the rationalization of inequality can have a self-enhancement function that bolsters self-regulation process when exposed to threatening contexts.Other Information Published in: Current Psychology
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s12144-020-00652-0
Well-Differentiated Liposarcoma of the Hypopharynx Exhibiting Myxoid Liposarcoma-like Morphology with MDM2 and DDIT3 Co-Amplification
Creators: name: Murshed, Khaled A.
name: Abo Samra, Hayan
name: Ammar, Adham
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Clinical sciences
Oncology and carcinogenesis

description: Well-differentiated liposarcoma (WDL) is one of the most common soft tissue sarcomas in adults. It has a predilection for middle-aged males and arises in deep-seated locations such as retroperitoneum, mediastinum, and spermatic cord. Its occurrence in young individuals at the hypopharyngeal region is an exceedingly rare event. Myxoid liposarcoma (ML)-like changes can seldom occur in some cases of WDL, which makes the diagnosis of WDL more challenging. Amplification of DDIT3 gene in a subset of cases of WDL has shown to be associated with such unique morphology. Herein, we present a case of a 36-year-old gentleman who presented with difficulty in breathing and swallowing for 3 months duration. CT scan of the neck revealed a lesion along the posterior wall of the hypopharynx measuring 3.5 cm. Histopathologic examination revealed a tumor composed of lobules of oval to spindle cells in a prominent myxoid stroma with delicate chicken-wire vasculature. In the vicinity, there were lobules composed of variably sized adipocytes separated by thick fibrous septa that contains atypical hyperchromatic spindle cells. By immunohistochemistry, the tumor cells in both components were immunoreactive for CDK4, but negative for MDM2. Fluorescence in-situ hybridization (FISH) confirmed the presence of MDM2 gene amplification. There was no evidence of FUS-DDIT3 gene rearrangement, however, DDIT3 gene was also amplified. The diagnosis of well-differentiated liposarcoma with prominent myxoid stroma was rendered. This is the first documentation of WDL with ML-like morphology harboring co-amplification of MDM2 and DDIT3 in the hypopharynx.Other Information Published in: Head and Neck Pathology
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s12105-021-01341-5
Effect of Substrate-Surface Roughness on Defect Density and Photovoltaic Performance in μc-Si:H Solar Cells
Creators: name: Tsutsui, Y.
name: Kubota, Y.
name: Chantana, J.
name: Sobajima, Y.
name: Toyama, T.
name: Sada, C.
name: Matsuda, A.
name: Okamoto, H.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Thin Film Solar Cells
Amorphous and Microcrystalline Silicon Solar Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2759-2762
description: The photovoltaic performance of n-i-p hydrogenated microcrystalline silicon (μc-Si:H) thin film solar
cell fabricated on textured ZnO:Al substrate with various root mean square (RMS) roughness (s) has been
investigated. The experimental result shows that short-circuit-current density increases with saturation and open
circuit voltage increases followed by sharp drop when increasing the s. It is difficult to explain these results using the
model proposed previously in which defective grain boundaries are created by the collision of columnar crystal
growth normal to the substrate surface. We have studied solar-cell performances as functions of substrate temperature
during p-layer growth and thickness of resultant p-layer. We have concluded that the main cause of deterioration of
the photovoltaic performance in n-i-p μc-Si:H solar cell fabricated on highly textured substrate is poor surface
coverage of p layer on the textured i-layer surface.
Anomalous Ettingshausen effect in iron-carbon alloys
Creators: name: Nagasawa, Ren
name: Oyanagi, Koichi
name: Hirai, Takamasa
name: Modak, Rajkumar
name: Kobayashi, Satoru
name: Uchida, Ken-ichi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have investigated the anomalous Ettingshausen effect (AEE) in iron-carbon alloys, i.e., cast irons and steel, using the lock-in thermography. All the alloys exhibit the clear AEE-induced temperature modulation, and their anomalous Ettingshausen coefficient is an order of magnitude greater than that of the pure iron at room temperature. The dimensionless figure of merit for AEE in the ductile cast iron is 55 times greater than that in the pure iron owing to the significant increase of the anomalous Ettingshausen coefficient. Our result reveals a potential of iron-carbon alloys as transverse thermoelectric materials, although the composition and microstructures optimizations are necessary.
description: 15 pages, 4 figures
Normalization, Square Roots, and the Exponential and Logarithmic Maps in Geometric Algebras of Less than 6D
Creators: name: De Keninck, Steven
name: Roelfs, Martin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Geometry (cs.CG)
subject: Symbolic Computation (cs.SC)
subject: FOS: Computer and information sciences
subject: 15A67

description: Geometric algebras of dimension $n < 6$ are becoming increasingly popular for the modeling of 3D and 3+1D geometry. With this increased popularity comes the need for efficient algorithms for common operations such as normalization, square roots, and exponential and logarithmic maps. The current work presents a signature agnostic analysis of these common operations in all geometric algebras of dimension $n < 6$, and gives efficient numerical implementations in the most popular algebras $\mathbb{R}_{4}$, $\mathbb{R}_{3,1}$, $\mathbb{R}_{3,0,1}$ and $\mathbb{R}_{4,1}$, in the hopes of lowering the threshold for adoption of geometric algebra solutions by code maintainers.
description: 16 pages, 4 figures
Relationships between the Structure, Charge Transport Properties and Performance of Hybrid Solar Cells Based on Poly(3-Hexylthiophene) and Semiconductor Nanocrystals
Creators: name: Borchert, H.
name: Zutz, F.
name: Radychev, N.
name: Lokteva, I.
name: Kolny-Olesiak, J.
name: Von Hauff, E.
name: Riedel, I.
name: Parisi, J.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
Organic-based PV

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 643-646
description: Using semiconductor nanoparticles such as CdSe nanocrystals as electron acceptors in polymer-based
bulk heterojunction solar cells is a promising attempt to improve the absorption properties as well as electron
transport in organic-based solar cells. However, the efficiency of such hybrid solar cells is still limited to about ~3%,
i.e. below that of polymer/fullerene solar cells. This may partly be due to less advanced control over the morphology
of nanoparticle/polymer films. In this work, a systematic study of correlations between the blend morphology, charge
transport properties and device performance of hybrid solar cells made of poly(3-hexylthiophene) and CdSe
nanoparticles is presented.
Hydrogen-Ti$^{3+}$ Complex as a Possible Origin of Localized Electron Behavior in Hydrogen-Irradiated SrTiO$_3$
Creators: name: Ito, Takashi U.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A recent muon spin rotation ($μ^+$SR) study on a paramagnetic defect complex formed upon implantation of $μ^+$ pseudo-proton into SrTiO$_3$ is reviewed with a specific focus on the relation with experimental signatures of coexisting delocalized and localized electrons in hydrogen-irradiated metallic SrTiO$_3$ films. The paramagnetic defect complex, composed of interstitial $μ^+$ and Ti$^{3+}$ small polaron, is characterized by a small dissociation energy of about 30 meV. Density functional theory (DFT) calculations in the generalized gradient approximation (GGA) +$U$ scheme for a corresponding hydrogen defect complex reveal that a thermodynamic donor level associated with electron transfer from an H$^+$-Ti$^{3+}$ complex to the conduction band can form just below the conduction band minimum for realistic $U$ values. These findings suggest that the coexistence of delocalized and localized electrons can be realized in hydrogen-irradiated SrTiO$_3$ in electron-rich conditions.
description: 12 pages, 5 figures, e-J. Surf. Sci. Nanotech. (2022), advance online publication