cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Coulomb drag in topological insulator films
Creators: name: Liu, Hong
name: Liu, Weizhe Edward
name: Culcer, Dimitrie
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study Coulomb drag between the top and bottom surfaces of topological insulator films. We derive a kinetic equation for the thin-film spin density matrix containing the full spin structure of the two-layer system, and analyze the electron-electron interaction in detail in order to recover all terms responsible for Coulomb drag. Focusing on typical topological insulator systems, with film thicknesses d up to 6 nm, we obtain numerical and approximate analytical results for the drag resistivity $ρ_\text{D}$ and find that $ρ_\text{D}$ is proportional to $T^2d^{-4}n^{-3/2}_{\text{a}}n^{-3/2}_{\text{p}}$ at low temperature T and low electron density $n_{\text{a,p}}$, with a denoting the active layer and p the passive layer. In addition, we compare $ρ_{\text{D}}$ with graphene, identifying qualitative and quantitative differences, and we discuss the multi valley case, ultra thin films and electron-hole layers.
A System Study on Silicon Thin-Film pm-Si:H/µc-Si:H Tandem Cell Structure
Creators: name: Dadouche, F.
name: Béthoux, O.
name: Labouré, E.
name: Johnson, E.
name: Roca I Cabarrocas, P.
name: Marchand, C.
name: Kleider, J.-P.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Components for PV Systems
Engineering and System Integration

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 3699-3705
description: This article aims to optimize an innovative tandem structure based on polymorphous and microcrystalline silicon for
the top and bottom elementary cells, respectively, combined with an original DC-DC converter. The studied tandem
structure is composed of two separated cells. Each of them is connected to its own electrodes. Thus they are
electrically decoupled but optically coupled. In those conditions, the constraint of current matching usually needed in
the classical micromorph structures is released. As a result, the robustness against the current variations is enhanced
and the efficiency of the structure improves.
Since the top cell plays the main role in the determination of the transmitted part of the incoming flux to the bottom
cell, the thickness of the intrinsic layer of the polymorphous cell is tuned so that the output power of the global
structure becomes maximal.
To implement the electric decoupling of two sub cells, the studied structure needs two static converters. In order to
minimize the converters bulk, an innovative output electric architecture and its optimized related control is designed.
This systemic approach leads to a better global structure in terms of efficiency, cost and management.
Uncertainties in the Energy Yield Prediction of PV Cell and Modules
Creators: name: Qiu, Y.
name: Strobel, M.B.
name: Betts, T.R.
name: Gottschalg, R.
name: Beyer, H.-G.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Components for PV Systems
Engineering and System Integration

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 3706-3709
description: This paper presents the uncertainty in the energy yield prediction for PV cells and modules. The aims
of this analysis are twofold: Firstly, it allows the estimation of how much further modelling accuracy can be
increased (for current environmental datasets) and secondly, it gives a realistic estimate of the risk of predicted DCpower
production. In this paper, the uncertainty analysis procedure for PV devices are shown and investigated.
Galaxy And Mass Assembly (GAMA): Accurate Panchromatic Photometry from Optical Priors using LAMBDAR
Creators: name: Wright, A. H.
name: Robotham, A. S. G.
name: Bourne, N.
name: Driver, S. P.
name: Dunne, L.
name: Maddox, S. J.
name: Alpaslan, M.
name: Andrews, S. K.
name: Bauer, A. E.
name: Bland-Hawthorn, J.
name: Brough, S.
name: Brown, M. J. I.
name: Cluver, M.
name: Davies, L. J. M.
name: Holwerda, B. W.
name: Hopkins, A. M.
name: Jarrett, T. H.
name: Kafle, P. R.
name: Lange, R.
name: Liske, J.
name: Loveday, J.
name: Moffett, A. J.
name: Norberg, P.
name: Popescu, C. C.
name: Smith, M.
name: Taylor, E. N.
name: Tuffs, R. J.
name: Wang, L.
name: Wilkins, S. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the Lambda Adaptive Multi-Band Deblending Algorithm in R (LAMBDAR), a novel code for calculating matched aperture photometry across images that are neither pixel- nor PSF-matched, using prior aperture definitions derived from high resolution optical imaging. The development of this program is motivated by the desire for consistent photometry and uncertainties across large ranges of photometric imaging, for use in calculating spectral energy distributions. We describe the program, specifically key features required for robust determination of panchromatic photometry: propagation of apertures to images with arbitrary resolution, local background estimation, aperture normalisation, uncertainty determination and propagation, and object deblending. Using simulated images, we demonstrate that the program is able to recover accurate photometric measurements in both high-resolution, low-confusion, and low-resolution, high-confusion, regimes. We apply the program to the 21-band photometric dataset from the Galaxy And Mass Assembly (GAMA) Panchromatic Data Release (PDR; Driver et al. 2016), which contains imaging spanning the far-UV to the far-IR. We compare photometry derived from LAMBDAR with that presented in Driver et al. (2016), finding broad agreement between the datasets. Nonetheless, we demonstrate that the photometry from LAMBDAR is superior to that from the GAMA PDR, as determined by a reduction in the outlier rate and intrinsic scatter of colours in the LAMBDAR dataset. We similarly find a decrease in the outlier rate of stellar masses and star formation rates using LAMBDAR photometry. Finally, we note an exceptional increase in the number of UV and mid-IR sources able to be constrained, which is accompanied by a significant increase in the mid-IR colour-colour parameter-space able to be explored.
description: 38 pages, 27 figures, 3 tables, 3 appendices, accepted for publication in MNRAS
The History and Future of Incentives and the Photovoltaic Industry and How Demand Is Driven
Creators: name: Mints, P.
Publisher: name: WIP
Year: 2011
Subjects: PV Taking Off: Large-Scale Deployment
Markets for Large-scale PV

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 4420-4424
description: Historically, demand for photovoltaic systems and products into the grid-connected application have
been incentive driven. This demand, primarily into the industrialized markets for electricity, remains volatile and
vulnerable to changes in incentive structures. This paper dissects industry demand from 1974 to present, observing
periods of strong and weak demand along with the trend from remote to grid-connected applications as incentives for
grid-connected applications became more common. Demand data from 1974 through 2010 will be observed along with
the incentive structures that drove them for three historic periods and one historic period with its accompanying forecast. These periods are:
• 1975 to 1985: Government and Utility Grid Connected Demonstration Projects
• 1985 to 1995: Slowing of Demonstration Projects
• 1995 to 2005: Ramp up of Capacity Based Incentives and Beginning of Feed in Tariff Incentives
• 2005 to 2010: European Feed in Tariffs expand globally and Markets Overheat
2010 to 2015: Overheated Markets lead to changes in FiT structures, credit trading and government minimum
requirements for production by renewables .
title: Технические измерения и диагностика оборудования
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2023

description: В учебнике изложены основные определения теории измерений, принципы, методы и средства измерений, а также вопросы метрологии. Рассматриваются измерения основных физических величин в машиностроении и в нанотехнологиях. Описаны средства контроля и диагностики параметров автомобильных систем и методы планирования измерительного эксперимента. Дана информация по автоматизации измерительного эксперимента. Подготовлен в соответствии с Федеральным государственным образовательным стандартом высшего образования. Учебник предназначен для студентов, обучающихся по направлениям машиностроения и автоматизации, изучающих дисциплины «Технические измерения и диагностика оборудования», «Метрология и технические измерения», а также иные дисциплины, связанные с техническими измерениями.
A Community-Based Study of Stroke Survivors in a Semi-urban Community in South East (SE) Nigeria Using a Mixed Methodology
Creators: name: Adigwe, Gloria
Publisher: name: University of East London
Year: 2024

description: Background: Stroke is the leading cause of death and the root of long-term disability worldwide; this has become an international concern. Studies have identified a 42% decrease in stroke incidences in high-income countries (HICs) but 100% increase in LMICs –such as in Nigeria.

Objectives: The purpose of this study was to investigate the impact of stroke on the quality of life (QOL) of stroke survivors in the SE communities of Nigeria by utilising the health-related quality of life in stroke patients’ questionnaires. The secondary objective was to investigate the perceptions, attitudes, and cultural approaches of stroke survivors to provide evidence of the variables and determinants that predict the impact of stroke on QOL from the perspective of the survivors.

Methods: The research employed an explanatory sequential mixed methodological strategy involving two phases. Quantitative phase 1 utilised a cross-sectional design with convenience sampling, administering a robust HRQOLISP questionnaire to 101 people, 53 male and 48 female (who were spread over 4 medical institutions) over over two years. Qualitative phase 2 combined a phenomenological approach with purposive sampling. This entailed conducting ten semi-structured interviews (6 male and 4 particpants) over a two-year period and analysing them using an interpretative phenomenological methodology.

Results: The results had a twofold effect on the QOL of the stroke survivors: positive and negative. In quantitative phase 1, HRQOLISP descriptive statistics indicated that the category with the lowest score, showing a negative impact on QOL, was the physical domain (mean = 2.52, SD = 0.76). In contrast, the spiritual domain had the greatest positive influence on QOL (mean = 3.70, SD = 0.50).The results also revealed the significance of the relationships between the HRQOLISP which demonstrated a significant positive relationship between the emotional dimension and the intellectual and soul dimensions. Qualitative phase 2 indicated that the physical dimension – portrayed by an unknown self, which includes (physical and psychological)– was the most negatively affected, while the spiritual dimension – reflecting reconstruction of the embodied self, was positively affected mainly by the spiritual interaction of one’s faith.

Conclusion: The most affected HRQOL domains in this study were physical and spiritual. The findings emphasise the importance of rehabilitation, which should involve a holistic multidimensional approach within the community that will address not only the physical aspect of rehab but equally the psychological circumstances and existential issues. A simple form of partnership between rehabilitation clinics or hospital-based stroke rehabilitation centres and faith-based organisations and traditional healers is recommended.
Energy Target for 2050: 100% Renewable Electricity Supply in Germany
Creators: name: Lehmann, H.
Publisher: name: WIP
Year: 2011
Subjects: PV Taking Off: Large-Scale Deployment
Markets for Large-scale PV

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 4431-4433
description: How could a carbon-neutral electricity sector be organized? The Federal Environment Agency addressed
this issue in the first edition of an intended series of scenario studies on a sustainable energy system. In a simulation of a
Regions Network scenario we illustrated how electricity generation could be based solely on renewable energy sources,
guaranteeing security of supply at the same time. We made assumptions regarding the potential of different renewable
energy carriers, considering technical and environmental constraints for the exploitation of these potentials. Further, we
estimated potential electricity storage and load management capacities. This information was matched with
meteorological data and load characteristics of the years 2006 – 2009, applying the SimEE model. This model simulated
the electricity production from installed renewable energy capacities and storage facilities, the load curve and selected
load management options over several years in an hourly resolution. The result of the simulation illustrated that an
electricity supply system based completely on renewable energies is technically as well as ecologically feasible in
Germany. We derived political recommendations supporting the development of a carbon-neutral electricity sector.
An Innovative Flat Roof Based Solar Tracking System, LIGHTTRACK®
Creators: name: Straver, M.C.W.
name: Gieselaar, D.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Components for PV Systems
Balance of System Components

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 3677-3679
description: With the growing demand of large grid-connected PV systems, the need to maximize yields and reduce
costs is inevitable. Solar tracking systems satisfy these needs, but are mainly ground based structures, whereas a lot of
square meters are necessary for every kWp output. These systems have to compete against every other form using our
valuable landscape and soil. Therefore Oskomera Solar Power Solutions developed a new flat roof based solar
tracking system called LIGHTTRACK®.
Flat roofs are abundant and are a perfect solution for implementing large PV systems, especially in Western Europe
where every square meter is valuable. LIGHTTRACK® is a one-axis structure and has a yield which reaches up to
17,8% per year compared to stationary systems. Unique in his kind, this solar tracking system has his rotating axis in
the north-south direction. The PV modules rotate from east to west, of course regarding ‘backtracking’. This
innovative new direction of rotating, gains efficiency in the conversion DC to AC. Inverters won’t be affected by
high peaks and slow exposure, but will be turned on earlier and peaks will be less. The ground cover ratio of
LIGHTTRACK® is equal to stationary systems. For 1MWp, only 17.500m2 is needed. Next to that, no additional
roof-transits are necessary since it is a ballasted system. Therefore, LIGHTTRACK® is very flexible and because the
weight is comparable to stationary systems, the applicability will be equal to stationary systems.
Abertura de dados em Instituições de Ciência, Tecnologia e Inovação no Brasil
Creators: name: Pavão, Caterina Groposo
name: Felicissimo, Carolina
name: Rocha, Rafael Port da
name: Junior, Rene Faustino Gabriel
name: Vanz, Samile
name: Caregnato, Sônia
Publisher: name: Zenodo
Year: 2022

description: Apresentação realizada na sessão Comunicação III da 13ª Conferência Lusófona de Ciência Aberta, formato híbrido, de 10 a 12 de outubro de 2022.
Influence of Lateral Temperature on Light Elements Precipitations during MC-SI Crystallization in a DS Furnace
Creators: name: Pihan, E.
name: Plassat, N.
name: Camel, D.
name: Marie, B.
name: Lignier, H.
name: Albaric, M.
name: Chavrier, D.
name: Provent, E.
name: Fayard, E.
name: Jouini, A.
name: Vannier, C.
name: Lay, P.
name: Périchaud, I.
name: Mong-The Yen, V.
Publisher: name: WIP
Year: 2011
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 1900-1903
description: The influence of lateral heater temperature on light elements precipitation is studied experimentally
for the case of crystallization with a convex front shape in the ECM PV600 directional solidification furnace in
the 450kg configuration. Depending on the lateral temperature conditions with 100% recycled silicon, silicon
nitride and silicon carbide precipitation can be either located in the bulk of the ingot or localized only in the side
cuts. Characterization is realized by correlation between Lateral Photovoltage Scanning, infrared imaging, and
FTIR measurement of substitutional carbon content. A good understanding of the results is provided by an
interpretation involving liquid silicon convection just over the solid/liquid interface in the lateral parts of the
ingots. The control of this process is shown to be crucial in order to maximize the ingot yield with respect to
infrared transparency for various silicon qualities and especially for various carbon contents.
A literature review of prominent saxophone altissimo pedagogy publications
Creators: name: Ferst, Joel
name: 0009-0008-7885-1370
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Saxophone
Pedagogy

description: Since its invention in the 1840s by Belgian instrument maker Adolphe Sax, the saxophone has grown rapidly in both repertoire and pedagogy. Sax applied for, and received, a 15-year patent for the instrument on June 28, 1846, which covered 14 different versions of the original design ranging from sopranino to contrabass. The instruments were split into two series: a group pitched in F and C, speculated to be for orchestral use, and a group pitched in Bb and Eb, speculated for use in French military bands, which became the standard version. The original, non-transposed keyed range of the saxophone was in treble clef and went from B below the staff to the first Eb above the staff. The non-transposed keyed range of the modern saxophone spans two and a half octaves, from low Bb below the staff in treble clef to high F# above the staff in treble clef. It is clear from writings and accounts by Hector Berlioz, a close personal friend of Adolphe Sax, that a four-octave range was always envisioned. Through the manipulation of the oral cavity, which in America is most commonly referred to as voicing, saxophonists can isolate the harmonics in the natural overtone series to extend past the keyed range to achieve a range of up to four octaves. This document will serve as a literature review of prominent pedagogical literature about the extended range of the saxophone, as well as include sections discussing the process behind producing the extended range above the keyed range of the saxophone. This document will also address different methodologies and approaches.
Exoplanet Transits Registered at the Universidad de Monterrey Observatory. Part I: HAT-P-12b, HAT-P-13b, HAT-P-16b, HAT-P-23b and WASP-10b
Creators: name: Sada, Pedro V.
name: Ramón-Fox, Felipe G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Forty transits of the exoplanets HAT-P-12b, HAT-P-13b, HAT-P-16b, HAT-P-23b and WASP-10b were recorded with the 0.36m telescope at the Universidad de Monterrey Observatory. The images were captured with a standard Johnson-Cousins Rc and Ic and Sloan z' filters and processed to obtain individual light curves of the events. These light curves were successfully combined for each system to obtain a resulting one of higher quality, but with a slightly larger time sampling rate. A reduction by a factor of about four in per-point scatter was typically achieved, resulting in combined light curves with a scatter of ~1 mmag. The noise characteristics of the combined light curves were verified by comparing Allan variance plots of the residuals. The combined light curves for each system, along with radial velocity measurements from the literature when available, were modeled using a Monte Carlo method to obtain the essential parameters that characterize the systems. Our results for all these systems confirm the derived transit parameters (the planet-to-star radius ratio, Rp/R*; the scaled semi-major axis, a/R*; the orbital inclination, i; in some cases the eccentricity, e; and argument of periastron of the orbit, ω), validating the methodology. This technique can be used by small college observatories equipped with modest-sized telescopes to help characterize known extrasolar planet systems. In some instances, the uncertainties of the essential transit parameters are also reduced. For HAT-P-23b, in particular, we derive a planet size 4.5 +- 1.0% smaller. We also derive improved linear periods for each system, useful for scheduling observations.
description: Accepted for publication: Publications of the Astronomical Society of the Pacific. 35 pages, 14 Figures and 4 Tables
Dissipation in small systems: A Landau-Zener approach
Creators: name: Barra, Felipe
name: Esposito, Massimiliano
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We establish a stochastic thermodynamics for a Fermionic level driven by a time-dependent force and interacting with initially thermalized levels playing the role of a reservoir. The driving induces consecutive avoided crossings between system and reservoir levels described within Landau-Zener theory. We derive the resulting system dynamics and thermodynamics and identify energy, work, heat, entropy and dissipation. Our theory perfectly reproduces the numerically exact quantum work statistics obtained using a two point measurements approach of the total energy and provides an explicit expression for the dissipation in terms of diabatic transitions.
description: 4 pages, 4 figures
Impact of ESBTs on Inverter Efficiency
Creators: name: Stier, S.H.
name: Buonomo, S.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Components for PV Systems
Balance of System Components

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 3616-3619
description: The most important criteria for solar inverters are efficiency, reliability and costs. Semiconductor
switches generate a big part of the losses of a PV inverter. Emitter switched bipolar transistors (ESBT) are
semiconductor switches with low losses in comparison to IGBT switches. The ESBT is a monolithic cascode
structure of a high voltage bipolar transistor and a low voltage MOSFET (fig. 1). The forward voltage drop at
nominal current in this application is about 1 V. The turn on and off losses are much less in comparison to all types
of IGBTs. So it is possible to increase the efficiency or/and switching frequency of the converter. Measurements with
two 3 phase solarinverters with an ESBT and an IGBT boost stage show the benefit of the ESBT in comparison to
the IGBT.
Impact of Impurities on the Mechanical Strength of Multicrystalline Silicon
Creators: name: Orellana Pérez, T.
name: Funke, C.
name: Fütterer, W.
name: Riepe, S.
name: Möller, H.J.
name: Tejado Garrido, E.M.
name: Pastor Caño, P.Y.
Publisher: name: WIP
Year: 2011
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 1864-1870
description: The usage of more inexpensive silicon feedstock for crystallizing mc-Si blocks promises cost
reduction for the photovoltaic market. For example, less expensive substrates of upgraded metallurgical silicon
(UMG-Si) are used as a mechanical support for the epitaxial solar cell. This feedstock has higher content of
impurities which influences cell performance and mechanical strength of the wafers. Thus, it is of importance to
know these effects in order to know which impurities should be preferentially removed or prevented during the
crystallization process. Metals like aluminum (Al) can decrease the mechanical strength due to micro-cracking of
the silicon matrix and introduction of high values of thermal residual stress. Additionally, silicon oxide (SiOx)
lowers the mechanical strength of mc-Si due to thermal residual stresses and stress intensification when an
external load is applied in the surrounding of the particle. Silicon carbide (SiC) introduces thermal residual
stresses and intensifies slightly the stress in the surrounding of the particle but can have a toughening effect on
the silicon matrix. Finally, silicon nitride (Si3N4) does not influence significantly the mechanical strength of mc-
Si and can have a toughening effect on the silicon matrix.
Optical lattice influenced geometry of quasi-2D binary condensates and quasiparticle spectra
Creators: name: Suthar, K.
name: Angom, D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We explore the collective excitations of optical lattices filled with two-species Bose-Einstein condensates (TBECs). We use a set of coupled discrete nonlinear Schrödinger equations to describe the system, and employ Hartree-Fock-Bogoliubov (HFB) theory with the Popov approximation to analyze the quasiparticle spectra at zero temperature. The ground state geometry, evolution of quasiparticle energies, structure of quasiparticle amplitudes, and dispersion relations are examined in detail. The trends observed are in stark contrast to the case of TBECs only with a harmonic confining potential. One key observation is the quasiparticle energies are softened as the system is tuned towards phase separation, but harden after phase separation and mode degeneracies are lifted.
description: 9 pages, 11 figures
Non-accretive Schrödinger operators and exponential decay of their eigenfunctions
Creators: name: Krejcirik, David
name: Raymond, Nicolas
name: Royer, Julien
name: Siegl, Petr
Publisher: name: arXiv
Year: 2016
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We consider non-self-adjoint electromagnetic Schrödinger operators on arbitrary open sets with complex scalar potentials whose real part is not necessarily bounded from below. Under a suitable sufficient condition on the electromagnetic potential, we introduce a Dirichlet realisation as a closed densely defined operator with non-empty resolvent set and show that the eigenfunctions corresponding to discrete eigenvalues satisfy an Agmon-type exponential decay.
Comparison of Different Techniques for Characterization of Defects in n-Type Cz Silicon
Creators: name: Hu, Y.
name: Juel, M.
name: Øvrelid, E.J.
name: Arnberg, L.
Publisher: name: WIP
Year: 2011
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 1876-1879
description: Copper decoration has been used to identify defects in n-type silicon wafers containing P-bands. This
was done by depositing Cu(NO3)2 solution onto the wafer, followed by heat treatment. This technique has been
shown to be fast and effective for decorating different kinds of defects in silicon. The defects are expanded due to
precipitation of Cu during cooling and can be delineated by Secco etching. They will then be clearly visible even with
the naked eye. In the present work, the wafer was analyzed under bright light. Secco etching was also directly applied
on an as-cut wafer from the same position as the one with Cu decoration in order to investigate flow pattern defects
(FPDs). It was found that the defect density was different in different defect areas, which indicated that this method
could also be used to define defect regions. Carrier density imaging (CDI) was used to measure the minority carrier
lifetime of another wafer from the same position after passivation of both surfaces with a-Si and low temperature
annealing. A lifetime map can be obtained by CDI with a resolution comparable to microwave-photoconductancedecay
(μ-PCD) but in a much shorter time. The defect boundary was shown in the lifetime map and the results were
compared to those obtained by camera imaging and light microscopy.
Access to Farmland by Beginning and Socially Disadvantaged Farmers: Issues and Opportunities
Creators: name: Callahan, Scott
name: Hellerstein, Daniel
name: Callahan, Scott
name: Hellerstein, Daniel
Publisher: name: Unknown
Year: 2022
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: Farm Management
subject: Financial Economics
subject: Industrial Organization
subject: Institutional and Behavioral Economics
subject: Labor and Human Capital
subject: Political Economy
subject: Research Methods/ Statistical Methods
subject: Risk and Uncertainty
subject: Land access
subject: land tenure
subject: landlords
subject: socially disadvantaged (SDA) farmers
subject: beginning farmers
subject: TOTAL survey

description: The aging of the population of U.S. farmers, increasing concentration of farmland ownership, and competition for land from urban and environmental uses may have implications for land available for beginning or socially disadvantaged (SDA) producers. Beginning and SDA producers may have fewer financial resources or face other constraints when buying or otherwise accessing land to enter farming or expand their farm operation. This report examines factors influencing land access to beginning and SDA farmers using survey, census, and administrative data.
On Self-Reducibility and Reoptimization of Closest Substring Problem
Creators: name: Aborot, Jeffrey
name: Adorna, Henry
name: Clemente, Jhoirene
Publisher: name: arXiv
Year: 2016
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences
subject: G.2.1
subject: 68W25

description: In this paper, we define the reoptimization variant of the closest substring problem (CSP) under sequence addition. We show that, even with the additional information we have about the problem instance, the problem of finding a closest substring is still NP-hard. We investigate the combinatorial property of optimization problems called self-reducibility. We show that problems that are polynomial-time reducible to self-reducible problems also exhibits the same property. We illustrate this in the context of CSP. We used the property to show that although we cannot improve the approximability of the problem, we can improve the running time of the existing PTAS for CSP.
description: 8 pages
Physical conditions and element abundances in SN and GRB host galaxies at different redshifts
Creators: name: Contini, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We compare the physical parameters and the relative abundances calculated throughout supernova (SN) and gamma-ray burst (GRB) host galaxies by the detailed modelling of the spectra. The results show that : 1) shock velocities are lower in long period GRB (LGRB) than in SN host galaxies. 2) O/H relative abundance in SN hosts are scattered within a range 8.0 <12+log(O/H)<8.85 but they are close to solar in LGRB hosts. N/H are lower than solar for both SN and LGRB. 3) The starburst temperatures within a few SN hosts reach Ts >10^5 K. Ts in LGRB hosts are 3-8 10^4 K. 4) Ha increases with the ionization parameter U. We suggest that SN-host symbiosis is stronger in terms of host galaxy activity than GRB-host in the range of energies related to the near UV - optical - near IR spectra.
description: 20 pages, 9 figures. Accepted for publication in the MNRAS
Statistics of Farmers' Marketing and Purchasing Cooperatives, 1940-41 Marketing Season
Creators: name: Elsworth, R. H.
name: Wanstall, Grace
name: Elsworth, R. H.
name: Wanstall, Grace
Publisher: name: Unknown
Year: 1942
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: Farm Management
subject: Financial Economics
subject: Land Economics/Use
subject: Marketing
subject: FOS: Economics and business

description: Contents: Source of data; Number of associations; Membership; Cooperative dollar business; Distribution of business; Changes from 1939-40 to 1940-41; Cotton and cotton products; Dairy products; Fruits, vegetables, nuts; Grain, dry beans, rice; Livestock associations; Poultry and eggs; Wool and mohair; Miscellaneous products; Farmers' purchasing associations; Changes in relative importance; Summary.
Temporal variation in the photometric magnetic activity of solar-like stars
Creators: name: Santos, Ângela R. G.
name: Mathur, Savita
name: García, Rafael A.
name: Claytor, Zachary R.
name: Broomhall, Anne-Marie
name: van Sanders, Jennifer
name: Egeland, Ricky
Publisher: name: Zenodo
Year: 2023
Subjects: stars: low-mass
stars: rotation
stars: activity
starspots
stars: individual: HD 173701
Sun: activity
techniques: photometric
methods: data analysis

description: The light curves of solar-like stars can exhibit rotational modulation due to dark spots co-rotating with the stellar surface. In addition to constraints on rotation properties, rotational modulation can also provide details on stellar magnetic activity. In this work, we investigate the temporal variation of the photometric magnetic activity proxy, Sph, of Kepler solar-like stars. We find that stars on average photometrically more active are also more variable in time, independently of spectral type. This relationship was known for the chromospheric activity index, but here we show that Kepler photometric data show a similar behavior. There is an additional dependency of the Sph variation on the rotation period, even after correcting for the dependencies on different stellar parameters. Furthermore, we compare the Sun with Kepler Sun-like stars, selected according to the recent Gaia-Kepler stellar properties catalog and the recent rotation catalog for Kepler solar-like stars. While, depending on the phase of the cycle, the Sun is among the less active stars, we find that the behavior of the magnetic activity proxy for the Sun is consistent and normal in comparison with that observed in Kepler Sun-like stars. In order to have a more complete picture of the stellar magnetic activity, long-term observations are important. In addition, using synthetic data, we also investigated lifetimes of active regions and found that the observational length is also a crucial parameter in the context of constraining lifetimes of active regions. These analyses may help us to improve the understanding solar and stellar magnetism and its associated timescales.
description: {"references": ["Ahumada, R. et al. (2020), ApJS, 249, 3", "Berger, T. A. et al. (2020), AJ, 159, 280", "Breton, S. N. et al. (2021), A&A, 647, A125", "Claytor, Z. R. et al. (2020), ApJ, 888, 43", "Garc\u00eda, R. A. et al. (2011), MNRAS, 414, L6", "Karoff, C. et al. (2018), ApJ, 852, 46", "Lockwood, G. W. et al. (2007), ApJS, 171, 260", "Mathur, S. et al. (2014), A&A, 562, A124", "Mathur, S. et al. (2017), ApJS, 229, 30", "Radick, R. R. et al. (2018), ApJ, 855, 75", "Radick, R. R. et al. (1998), ApJS, 118, 239", "Salabert, D. et al. (2016), A&A, 596, A31", "Salabert, D. et al. (2017), A&A, 608, A87", "Santos, A. R. G. et al. (2021), ApJS, 255, 17", "Santos, A. R. G. et al. (2019), ApJS, 244, 21", "Santos, A. R. G. et al., submitted to A&A", "van Saders, J. L. et al. (2016), Nat., 529, 181", "van Saders, J. L. et al. (2013), ApJ, 776, 67", "Zhao, G. et al. (2012), RAA, 12, 723", "Zong, W. et al. (2020), ApJS, 251, 15"]}
Galaxy And Mass Assembly (GAMA): the Stellar Mass Budget by Galaxy Type
Creators: name: Moffett, Amanda J.
name: Ingarfield, Stephen A.
name: Driver, Simon P.
name: Robotham, Aaron S. G.
name: Kelvin, Lee S.
name: Lange, Rebecca
name: Mestric, Uros
name: Alpaslan, Mehmet
name: Baldry, Ivan K.
name: Bland-Hawthorn, Joss
name: Brough, Sarah
name: Cluver, Michelle E.
name: Davies, Luke J. M.
name: Holwerda, Benne W.
name: Hopkins, Andrew M.
name: Kafle, Prajwal R.
name: Kennedy, Rebecca
name: Norberg, Peder
name: Taylor, Edward N.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report an expanded sample of visual morphological classifications from the Galaxy and Mass Assembly (GAMA) survey phase two, which now includes 7,556 objects (previously 3,727 in phase one). We define a local (z <0.06) sample and classify galaxies into E, S0-Sa, SB0-SBa, Sab-Scd, SBab-SBcd, Sd-Irr, and "little blue spheroid" types. Using these updated classifications, we derive stellar mass function fits to individual galaxy populations divided both by morphological class and more general spheroid- or disk-dominated categories with a lower mass limit of log(Mstar/Msun) = 8 (one dex below earlier morphological mass function determinations). We find that all individual morphological classes and the combined spheroid-/bulge-dominated classes are well described by single Schechter stellar mass function forms. We find that the total stellar mass densities for individual galaxy populations and for the entire galaxy population are bounded within our stellar mass limits and derive an estimated total stellar mass density of rho_star = 2.5 x 10^8 Msun Mpc^-3 h_0.7, which corresponds to an approximately 4% fraction of baryons found in stars. The mass contributions to this total stellar mass density by galaxies that are dominated by spheroidal components (E and S0-Sa classes) and by disk components (Sab-Scd and Sd-Irr classes) are approximately 70% and 30%, respectively.
description: 13 pages, 9 figures (high-resolution figures available in journal version), MNRAS accepted
Disponibilidad de recursos humanos, financieros y materiales para la atención a personas mayores. “Policlínico Cecilio Ruíz de Zarate”, Cienfuegos, Cuba. 2017-2018
Creators: name: Home Martínez, Ana
name: López Home, Ivis
name: Rodríguez Cabrera, Aida L.
name: Pérez Águila, Regla
name: Montes de Oca Montano, José Luis
Publisher: name: figshare
Year: 2023
Subjects: Financial economics
Urban and regional economics
Health economics

description: El envejecimiento poblacional tiene un gran impacto en los servicios de salud por ello la disponibilidad suficiente de recursos, financieros y materiales para su atención constituye un elemento esencial. Este es un escenario de importantes desafíos para la familia, la interacción comunitaria, el estado y la sociedad. Ello demanda ampliar y reorientar los programas sociales, sectoriales, de bienestar y salud. La presente investigación pretende determinar la disponibilidad de los recursos humanos, financieros y materiales para la atención a las personas mayores en el Área II, del Municipio Cienfuegos, durante el año 2018. Con este propósito los autores conducen un estudio descriptivo de corte transversal en el que se aborda la disponibilidad de recursos humanos, financieros y materiales para la atención al adulto mayor que reside en dicho sector geográfico. Para cumplir los objetivos propuestos se llevó a cabo una revisión bibliográfica del tema y de documentos primarios del Área de Salud en cuestión. Fue aplicado un conjunto de instrumentos estadístico, entre los que se encuentran cuestionarios y entrevistas al personal de salud y los adultos mayores que son objeto de atención por parte de la entidad de salud, así como instrumentos de observación encubierta en diferentes servicios de salud y consultorios. Con posterioridad, Los datos estadísticos adquiridos fueron procesados con el programa Microsoft Excel del paquete de Microsoft Office. La interpretación de la información resultante permitió determinar que la percepción sobre la calidad de la atención se encontraba entre buena (47.1) y regular (44.3), lo que evidenció insatisfacción y la presencia de brechas entre los recursos humanos, financieros y materiales existentes en la atención a este grupo etario. Pudo constatarse la no realización de controles médicos, lo cual originaba que los pacientes solo se chequearan cuando estaban enfermos. No se realizaban visitas de terreno, este grupo carecía de prioridad en los servicios de salud y recibía la misma atención que el adulto joven. El estudio evidenció sobrecarga en el trabajo de las Enfermeras y los Fisiatras, a pesar de haber plazas vacantes de médicos y de enfermeras. Algunas especialidades mostraban un elevado número de pacientes con un tiempo de espera muy elevado. Palabras clave: recursos humanos, recursos financieros, recursos materiales, personas mayores, Área II “Policlínico Cecilio Ruíz de Zarate”, Cienfuegos.
The Ram Khamhaeng Inscription: A Piltdown Skull of Southeast Asian History?
Creators: name: Vickery, Michael
Publisher: name: Zenodo
Year: 1991
Subjects: Rāmkhamhǣng
Sukhothai

description: Michael Vickery, "The Ram Khamhaeng Inscription: A Piltdown Skull of Southeast Asian History?" in The Ram Khamhaeng Controversy: Collected Papers, edited by James R. Chamberlain (Bangkok: Siam Society, 1991), 3-51. Rāmkhamhǣng, -- King of Sukhothai, -- -approximately 1300. Inscriptions, Thai -- Thailand -- Sukhothai. Sukhothai (Thailand) -- Antiquities.
Transflection, a New Illumination Technique for in Line Crack Detection in Crystalline Silicon Wafers
Creators: name: Johnsen, L.
Publisher: name: WIP
Year: 2011
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 1880-1883
description: Crack detection is mandatory for high yield production of crystalline silicon solar cells.
Instrumentation for in-line crack detection is a part of today's standard production lines. However the commercial
equipment available today has some serious weaknesses allowing some parts with cracks to pass the inspection. In
this paper some of these weaknesses are described and a new illumination technique is presented to eliminate these
weaknesses. The illumination technique introduced is known form other fields of optical metrology under the name
of transflection or interactance. With transflection an area of wafer surface is illuminated, the light is coupled into the
wafer and interacts with any defect in the light path and is emitted from the wafer surface at a different position. A
crack will obstruct light and so create a clear signature in the emitted intensity. The technique suppresses the grain
pattern from multi crystalline silicon wafers and also allows detection of cracks independent of crack orientation.
Geschichte und Funktion der drei großen Perikopen: Vom Blindgeborenen, von der Samariterin am Jakobsbrunnen und von der Auferweckung des Lazarus
Creators: name: Maertens, Thierry
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 3 Nr. 2 (1967): Concilium: Internationale Zeitschrift für Theologie, Band 3, Heft 2
Characterization of the Surfaces Generated by Diamond Cutting of Crystalline Silicon
Creators: name: Cai, E.
name: Tang, B.
name: Fahrner, W.R.
name: Zhou, L.
Publisher: name: WIP
Year: 2011
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 1884-1886
description: Experiments of single diamond-tip indentation and scribing of crystalline silicon under controlled load
were carried out. Morphologies of the generated marks, and surfaces of wafers cut by diamond-fixed wire saws,
along with those by conventional wire saws, were analyzed. Minority carrier lifetimes of the wafers with as-cut
surfaces, and with surface layers of certain depths removed, were measured. The results show that the indentation
alone can cause chipping-off of a surface layer of silicon; and that a diamond-tip scribes crystalline silicon in two
fundamentally different mechanisms, plastic ploughing and brittle chipping-off. The plastic ploughing generates
shiny smooth traces, while the brittle chipping-off generates micro-pits. Wafers cut by diamond-fixed wire saw
exhibit surfaces consisting of both the smooth plastic scribing traces and the brittle chipping-off pits. Faster cutting
with greater load of wire on silicon leads to higher rate of chipping-off, hence a larger portion of the pits on the
surface is generated. The minority carrier lifetime measurements of the passivated wafers with different depths of
surface removal indicate the depth of lifetime affected layer to be ~6 μm for the diamond cut wafers, and ~11μm for
the conventional slurry cut wafers. Higher dislocation density is observed in the near-surface layer.
On the geometry of random lemniscates
Creators: name: Lerario, Antonio
name: Lundberg, Erik
Publisher: name: arXiv
Year: 2016
Subjects: subject: Complex Variables (math.CV)
subject: Algebraic Geometry (math.AG)
subject: Algebraic Topology (math.AT)
subject: Metric Geometry (math.MG)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 31A15, 30C15, 14P05, 14P25, 60G60, 60E10, 57R52

description: We investigate the geometry of a random rational lemniscate $Γ$, the level set $\{|r(z)|=1\}$ on the Riemann sphere of the modulus of a random rational function $r$. We assign a probability distribution to the space of rational functions $r=p/q$ of degree $n$ by sampling $p$ and $q$ independently from the complex Kostlan ensemble of random polynomials of degree $n$. We prove that the average \emph{spherical length} of $Γ$ is $\frac{π^2}{2} \sqrt{n},$ which is proportional to the square root of the maximal spherical length. We also provide an asymptotic for the average number of points on the curve that are tangent to one of the meridians on the Riemann sphere (i.e. tangent to one of the radial directions in the plane). Concerning the topology of $Γ$, on a local scale, we prove that for every disk $D$ of radius $O(n^{-1/2})$ in the Riemann sphere and any \emph{arrangement} (i.e. embedding) of finitely many circles $A\subset D$ there is a positive probability (independent of $n$) that $(D,Γ\cap D)$ is isotopic to $( D,A)$. (A local random version of Hilbert's Sixteenth Problem restricted to lemniscates.) Corollary: the average number of connected components of $Γ$ increases linearly (the maximum rate possible according to a deterministic upper bound).
description: 27 pages, 3 figures
Influence of High Growth Velocity for Multi Crystalline Silicon Ingots on Solar Cells Efficiencies
Creators: name: Degoulange, J.
name: Kraiem, J.
name: Einhaus, R.
name: Sylla, L.
Publisher: name: WIP
Year: 2011
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 1891-1894
description: In order to further reduce the costs of multi-crystalline ingots this work aims at increasing the ingot
growth velocities well above the typical values of 1.5 cm/h or less [1], that are found in most industrial multicrystalline
Silicon ingot growth processes. A reduced cycle time for the growth of multi-c Silicon ingots directly
transfers to reduced direct costs of this important production step in the PV value chain. The impact of the growth
velocity on the crystalline quality has been investigated. The objective is to obtain similar solar cell efficiencies on
multi-crystalline wafer from ingots grown at higher velocities compared to the standard conditions . Solar cells from
ingots crystallized at 1 cm/h and 2 cm/h have been processed and characterized. An additional ingot has been
crystallized at an even higher growth velocity of 3 cm/h but the macroscopic crystal structures were not satisfying
and indicated already a low quality of the ingot, so no solar cells were processed from this high velocity ingot.