cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Оптимальные стратегии инвестирования в области транспортной инфраструктуры в условиях риска и неопределенности
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2023

description: В учебном пособии последовательно раскрываются понятия и содержание инвестиционного проектирования, а также его основной методический инструментарий для выбора оптимальной стратегии при реконструкции (новом строительстве) транспортных сооружений. Показано современное состояние и перспективы развития системы управления рисками инвестиционно-строительных проектов на этапе технико-экономического обоснования или проектной подготовки строительства. Следует отметить особенно применение авторами методологических инноваций, базирующихся на результатах последних научных достижений в сфере экономического обоснования эффективности инвестиций. Кроме того, издание направлено на отражение специфики экономических задач и методов их решения для ресурсоемких объектов транспортного строительства. Подготовлено в соответствии с требованиями Федерального государственного образовательного стандарта высшего образования. Учебное пособие предназначено для изучения дисциплин «Эффективность инвестиций и инвестиционных проектов», «Управление проектами», «Менеджмент инноваций» студентами направления подготовки бакалавров 38.03.01 «Экономика» (профиль «Экономика предприятий и организаций (строительство)»), дисциплины «Экономическая эффективность проектов» студентами направления подготовки магистров 38.04.02 «Менеджмент», дисциплин «Экономическая эффективность проектов», «Оценка рисков бизнес-структур промышленно-транспортного комплекса», «Учетно-аналитическое обеспечение процесса принятия инвестиционных решений» студентами направления подготовки магистров 38.04.01 «Экономика», а также дисциплины «Содержание и реконструкция тоннелей» студентами специальности 23.05.06 «Строительство железных дорог, мостов и транспортных тоннелей».
On the Illumination Spectrum Influence in the Electrical Characterization of Multijunction Solar Cells
Creators: name: Socolovsky, H.
name: Yaccuzzi, E.
name: Godfrin, E.M.
name: Plá, J.
Publisher: name: WIP
Year: 2011
Subjects: Advanced Photovoltaics : New Concepts and Ultra-High Efficiency
Solar Cells, Modules and PV Systems for Space Applications

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 795-799
description: This paper presents the analysis and simulation of the behaviour of triple junction InGaP/GaAs/Ge
solar cells designed for space applications when they are illuminated with different light spectra sources. The study
involves the utilization of continuous and pulsed light sources and, for this second case, a detailed dynamical
analysis by using Pspice® software simulations. Preliminary results show a good agreement between simulation
predictions and electrical verification on the Aquarius/SAC-D solar array modules. This work was performed in the
frame of a cooperation agreement between the Argentine National Atomic Energy Commission (CNEA) and the
Argentine National Commission for Space Activities (CONAE), which is addressed in these first stages to SAOCOM
and SAC-D satellites. Thus, the study is particularly oriented to be applied on triple junction (TJ) InGaP/GaAs/Ge
solar cells, the cells used in the CONAE satellites solar arrays.
title: Une histoire sur Vdəndə́l (personnage historique du village de Siyuewu)
title: A story about Vdəndə́l (historical figure of siyuewu village)
Creators: name: Lai, Yunfan
Publisher: name: Pangloss
Year: 2022
Subjects: subject: Linguistique
subject: Khroskyabs

description: Narrative about Vdəndə́l, a nobleman who worked for the headman in Siyuewu
N-Type Silicon Bifacial Concentrator LGCells with Optimized TCO Electrodes
Creators: name: Untila, G.
name: Kost, T.
name: Chebotareva, A.
name: Zaks, M.
name: Sitnikov, A.
name: Solodukha, O.
name: Shvarts, M.Z.
Publisher: name: WIP
Year: 2011
Subjects: Advanced Photovoltaics : New Concepts and Ultra-High Efficiency
Terrestrial Concentrator Systems

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 629-633
description: Different approaches are under elaboration aimed at the cost reduction of solar electricity. In crystalline
silicon photovoltaics (PV), the most important of them are: (i) continuous increasing the solar cell efficiency in
mass production; (ii) replacement of the p-type silicon as base material by n-type silicon; (iii) concentration PV approach;
(iv) using bifacial cells as an alternative to conventional monofacial cells. The purpose of this work was to
combine all these approaches in one solar cell, i.e. to develop a high-efficiency, bifacial n-type silicon solar cell for
application in low-concentrator system. Developed solar cell is based on the Laminated Grid Cell (LGCell) Indium-
Tin-Oxide (ITO)/(p+nn+)Cz-Si/Indium-Fluorine-Oxide (IFO) structure, made of routine Cz n-type silicon. Homogeneous
boron doped emitter and phosphorus doped BSF with the sheet resistances of ~95 /sq and ~50 /sq, correspondingly,
were obtained by diffusion and etch-back. ITO and IFO layers were deposited by ultrasonic spray pyrolysis.
Gridlines of wire were attached by low-temperature lamination process. The front/rear efficiencies of above
17.2%/15.25% under 2-5X illumination were achieved. This result is unique because, to our knowledge, no results
concerning the development of a bifacial concentrator n-type silicon solar cell have been reported until now.
A Geared 3RT Linkage Used for the Azimuth Orientation of a PV Platform
Creators: name: Creanga, N.
name: Visa, I.
name: Diaconescu, D.
name: Hermenean, I.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
Balance of System Components

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3799-3803
description: Tracking systems are used for optimization of the efficiency of a photovoltaic module by increasing the
amount of solar radiation received, following the sun movement during a day. Usually, for reaching wide angular strokes
complex and expensive mechanisms are used. In this paper is presented a new type of mechanism, build of a planetary
gears system fitted onto a linkage used for the azimuth movement of a PV tracking system. Although the complexity is
relatively high, the resulted linkage transmission angles have favorable values, and so jamming is avoided. The paper
presents the kinematical modeling and synthesis algorithm of the proposed tracking geared linkage. Further the
mechanism is used to assure the azimuth movement of a PV module, and through numerical simulations the tracking
efficiency is calculated for a given geographical location.
HF-H2O2-H2O- Mixtures for Cleaning Solar Grade-Silicon: Removal of Metal Contaminations with HnO3-Free Etching Solutions
Creators: name: Gondek, C.
name: Lippold, M.
name: Röver, I.
name: Kroke, E.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
Environmental Impacts, Recycling and Waste Management

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3818-3821
description: In the present study, the nitric acid-free etching system HF-H2O2-H2O is investigated. The reactivity
towards multicrystalline silicon is discussed over a wide concentration range, especially for high concentrations of
hydrogen peroxide and hydrofluoric acid, and with respect to the rate-determining step in silicon dissolution kinetics.
The resulting silicon surface is characterized by SEM measurement and IR spectroscopy. For low contaminated
silicon material, HF-H2O2-H2O-mixtures effectively remove metal impurities. The decomposition of hydrogen
peroxide is studied to gain information on the chemical stability of hydrogen peroxide in the etching mixture and
towards silicon surfaces. Possible applications for the more environmental-friendly etching-system are given.
Development of PECVD Reactor for Thin Film Solar Applications
Creators: name: Chaudhary, D.
name: Jost, S.
name: Klindworth, M.
name: Leu, F.
name: Martin, J.
name: Martinek, M.
name: Novak, S.
name: Salabas, A.
name: Schrader, N.
name: Taha, A.
name: Wetler, D.
name: Wieland, W.
name: Zorzi, D.
name: Ellert, C.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Thin Films Solar Cells
Amorphous and Microcrystalline Silicon Solar Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2839-2841
description: Large area (1.4 m2) thin film photovoltaic using thin film silicon technology requires PECVD
equipment for the deposition of the active pin-device. In order to achieve low cost of ownership a high deposition
rate at good uniformity and layer quality is desirable. Using very high frequency has been demonstrated to fulfill
these requirements. In recent years OC Oerlikon managed to overcome the standing wave effect, which leads
inherently to strong inhomogeneity in large area PECVD depositions. The layer thickness (for amorphous) as well
as the Raman crystallinity (for microcrystalline) need to be very uniform in order to provide optimum conditions for
high solar module performance. For reducing the downtime of the equipment the cleaning of the reactors after
deposition must be as short as possible while guaranteeing reactors free of contamination. This paper shows the
main achievements of the KAI, the PECVD equipment of OC Oerlikon Solar.
Framework to futurise science education - Deliverable 3.3
Creators: name: Rasa, Tapio
name: Laherto, Antti
name: Levrini, Olivia
name: Bol, Erica
name: Tasquier, Giulia
Publisher: name: Zenodo
Year: 2023
Subjects: Science education, futurisation

description: The Framework to Futurize Science Education addresses these concerns by suggesting how science education can provide students with tools for connecting with, and finding agency within, their personal and global futures. Based on the results of six FEDORA part-studies on students’ perceptions and European curricula, we present nine issues to be addressed in science education. Following the presentation of these issues, we propose a set of 14 recommendations to futurize science education.
Spatial and Spectral Distribution Determination of Solar Light Concentrated by Solar Collectors
Creators: name: Fucci, R.
name: Bianco, N.
name: Mongibello, L.
name: Parretta, A.
name: Privato, C.
Publisher: name: WIP
Year: 2011
Subjects: Advanced Photovoltaics : New Concepts and Ultra-High Efficiency
Terrestrial Concentrator Systems

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 778-781
description: Procedures applicable to concentrating solar collectors to determine how they modify spectrally and
spatially the sun direct radiation are described in this paper. We use a radiometric apparatus provided with two cavities
for light integration and attenuation (DCR) and coupled with an external spectrometer for spectral measurements. To
measure spatial light distribution we use a CCD camera with its data acquisition system, a set of neutral filters, a receiver
and the collector itself which has to be characterized. Finally, a heat flux sensor based on an inverse heat transfer method
(IHTM) is being developed for the estimation of concentrated radiative heat flux by means of temperature measurements.
The overall apparatus should be able to characterize a concentrated sunlight flux up to a concentration factor of 1000 X.
Fast Dynamical Evolution of Hadron Resonance Gas via Hagedorn States
Creators: name: Beitel, M.
name: Greiner, C.
name: Stoecker, H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Hagedorn states are the key to understand how all hadrons observed in high energy heavy ion collisions seem to reach thermal equilibrium so quickly. An assembly of Hagedorn states is formed in elementary hadronic or heavy ion collisions at hadronization. Microscopic simulations within the transport model UrQMD allow to study the time evolution of such a pure non-equilibrated Hagedorn state gas towards a thermally equilibrated Hadron Resonance Gas by using dynamics, which unlike strings, fully respect detailed balance. Propagation, repopulation, rescatterings and decays of Hagedorn states provide the yields of all hadrons up to a mass of m=2.5 GeV. Ratios of feed down corrected hadron multiplicities are compared to corresponding experimental data from the ALICE collaboration at LHC. The quick thermalization within t=1-2 fm\c of the emerging Hadron Resonance Gas exposes Hagedorn states as a tool to understand hadronization.
description: 5 pages, 7 figures, 1 table
Irradiation Effect on the Electrical Parameters of A Bifacial Silicon Solar Cell Under Multispectral Illumination
Creators: name: Ly, I.
name: Wade, M.
name: Ly Diallo, H.
name: El Moujtaba, M.A.
name: Lemrabott, O.H.
name: Mbodji, S.
name: Diasse, O.
name: Ndiaye, A.
name: Gaye, I.
name: Barro, F.I.
name: Wereme, A.
name: Sissoko, G.
Publisher: name: WIP
Year: 2011
Subjects: Advanced Photovoltaics : New Concepts and Ultra-High Efficiency
Solar Cells, Modules and PV Systems for Space Applications

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 785-788
description: A theoretical study of a bifacial silicon solar cell under multispectral illumination and particles
(electrons, protons…) irradiation is presented. The dependence on the energy and the nature of the irradiation is
pointed out for the following parameters: photocurrent density, open circuit voltage, fill factor, conversion efficiency,
shunt and series resistances.
These dependences are shown for three illumination modes of the bifacial cell: front, back and simultaneous front and
back.
Anisotropy of in-plane hole g-factor in CdTe/ZnTe quantum dots
Creators: name: Bogucki, A.
name: Smoleński, T.
name: Goryca, M.
name: Kazimierczuk, T.
name: Kobak, J.
name: Pacuski, W.
name: Wojnar, P.
name: Kossacki, P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Optical studies of a bright exciton provide only limited information about the hole anisotropy in a quantum dot. In this work we present a universal method to study heavy hole anisotropy using a dark exciton in a moderate in-plane magnetic field. By analysis of the linear polarization of the dark exciton photoluminescence we identify both isotropic and anisotropic contributions to the hole g-factor. We employ this method for a number of individual self-assembled CdTe/ZnTe quantum dots, demonstrating a variety of behaviors of in-plane hole g-factor: from almost fully anisotropic to almost isotropic. We conclude that, in general, both contributions play an important role and neither contribution can be neglected.
description: 7 pages, 4 figures
Superfluid 4He dynamics beyond quasiparticle excitations
Creators: name: Beauvois, K.
name: Campbell, C. E.
name: Dawidowski, J.
name: Fåk, B.
name: Godfrin, H.
name: Krotscheck, E.
name: Lauter, H. -J.
name: Lichtenegger, T.
name: Ollivier, J.
name: Sultan, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The dynamics of superfluid 4He at and above the Landau quasiparticle regime is investigated by high precision inelastic neutron scattering measurements of the dynamic structure factor. A highly structured response is observed above the familiar phonon-maxon-roton spectrum, characterized by sharp thresholds for phonon-phonon, maxon-roton and roton-roton coupling processes. The experimental dynamic structure factor is compared to the calculation of the same physical quantity by a Dynamic Many-body theory including three-phonon processes self-consistently. The theory is found to provide a quantitative description of the dynamics of the correlated bosons for energies up to about three times that of the Landau quasiparticles.
description: 5 pages, 3 figures
Rapid Lyapunov control of finite-dimensional quantum systems
Creators: name: Kuang, Sen
name: Dong, Daoyi
name: Petersen, Ian R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Systems and Control (eess.SY)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Rapid state control of quantum systems is significant in reducing the influence of relaxation or decoherence caused by the environment and enhancing the capability in dealing with uncertainties in the model and control process. Bang-bang Lyapunov control can speed up the control process, but cannot guarantee convergence to a target state. This paper proposes two classes of new Lyapunov control methods that can achieve rapidly convergent control for quantum states. One class is switching Lyapunov control where the control law is designed by switching between bang-bang Lyapunov control and standard Lyapunov control. The other class is approximate bang-bang Lyapunov control where we propose two special control functions which are continuously differentiable and yet have a bang-bang type property. Related stability results are given and a construction method for the degrees of freedom in the Lyapunov function is presented to guarantee rapid convergence to a target eigenstate being isolated in the invariant set. Several numerical examples demonstrate that the proposed methods can achieve improved performance for rapid state control of quantum systems.
description: 15 pages, 5 figures
Angular diameter distances reconsidered in the Newman and Penrose formalism
Creators: name: Kling, Thomas P.
name: Aly, Aly
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Using the Newman and Penrose spin coefficient (NP) formalism, we provide a derivation of the Dyer-Roeder equation for the angular diameter distance in cosmological space-times. We show that the geodesic deviation equation written in NP formalism is precisely the Dyer-Roeder equation for a general Friedman-Robertson-Walker (FRW) space-time, and then we examine the angular diameter distance to redshift relation in the case that a flat FRW metric is perturbed by a gravitational potential. We examine the perturbation in the case that the gravitational potential exhibits the properties of a thin gravitational lens, demonstrating how the weak lensing shear and convergence act as source terms for the perturbed Dyer-Roeder equation.
description: 21 pages, 6 figures, accepted to GRG
SALTOpower | Fast-Track School #1 | Molten Salt technologies and energy system applications | MS potential in Process heat applications
Creators: name: Horta, Pedro
Publisher: name: Zenodo
Year: 2023
Subjects: Molten Salt Technology
Energy System
Heat Applications
Energy

description: Presentation carried out within the scope of Fast-Track School #1 of the SALTOpower project, on "Molten Salt technologies and energy system applications", specifically "MS potential in Process heat applications" by researcher Pedro Horta, University of Évora.
Epilayer Lift-Off by Cross-Shaped Holes for Thin Film Solar Cell and Substrate Recycle
Creators: name: Tseng, M.-C.
name: Horng, R.-H.
name: Li, C.-H.
name: Wu, F.-L.
Publisher: name: WIP
Year: 2011
Subjects: Advanced Photovoltaics : New Concepts and Ultra-High Efficiency
Solar Cells, Modules and PV Systems for Space Applications

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 800-802
description: Crack-free thin film solar cell is released from GaAs substrate by cross-shaped pattern epitaxial lift-off
(CPELO) technology. The cross-shaped pattern array is used to define cell size and provide the etch path of etchant
solution. The AlAs sacrificial layer is etched by hydrofluoric acid etchant through the cross-shaped holes. Results
indicate that the entire wafer can be etched simultaneously. The CPELO technique does not require a temporary
carrier substrate to transfer the epilayers because the permanent carrier substrate is directly deposited onto the
epilayers before the epitaxial lift-off process. The permanent carrier, the electroplated nickel substrate, can directly
contact to the epilayer without wax or low-viscosity epoxy, and can also be applied to a controllable external force
via magnetic attraction to reduce the release time. The release time of the 2-inch wafer with different cell sizes (1 to
25 mm2) is about 2 to 6 hours. After CPELO process, the separated GaAs substrate can be recycled via chemical
cleaning. The performance of the obtained thin film solar cell is 0.95 V, 14 mA/cm2, 84 %, 11.17 % for Voc, Jsc, FF
and  , respectively.
The dynamics of digitizing the internal communication: the regulation process of mandated Enterprise Social Networking System (ESNS)
Creators: name: Mola, Lapo
name: Kaminska, Renata
name: Richebé, Nathalie
name: Carugati, Andrea
Publisher: name: Department of Economics and Business Studies, University of Genoa
Year: 2020
Subjects: Organization

description: In nowadays knowledge intensive organizations – like f.i. IT companies and consultancy firms knowledge sharing process and collaboration represent key success factors for competing in a dynamic business environment. In large organizations characterized by distributed settings, managers need to develop tools and technique that can allow employees and teams dispersed in different geographical area to collaborate and share data, information and knowledge in order to avoid reworks and inconsistencies among projects. The present research in progress paper aims to understand the mechanisms and the tension between the organization that mandates the use of certain technologies and the actors that are supposed to adopt it. The preliminary findings show three different strategies put in place in order to align existing practices and the new logics introduced by the new tool: We have identified three strategies: 1) parallel use strategy; 2) overuse strategy; 3) and tolerant strategy.
AC bias characterization of low noise bolometers for SAFARI using an Open-Loop Frequency Domain SQUID-based multiplexer operating between 1 and 5 MHz
Creators: name: Gottardi, Luciano
name: Bruijn, Marcel
name: Gao, Jan-R.
name: Hartog, Roland den
name: Hijmering, Richard
name: Hoevers, Henk
name: Khosropanah, Pourya
name: de Korte, Piet
name: van der Kuur, Jan
name: Lindeman, Mark
name: Ridder, Marcel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: SRON is developing the Frequency Domain Multiplexing (FDM) readout and the ultra low NEP TES bolometers array for the infrared spectrometer SAFARI on board of the Japanese space mission SPICA. The FDM prototype of the instrument requires critical and complex optimizations. For single pixel characterization under AC bias we are developing a simple FDM system working in the frequency range from 1 to 5 MHz, based on the open loop read-out of a linearized two-stage SQUID amplifier and high Q lithographic LC resonators. We describe the details of the experimental set-up required to achieve low power loading (< 1 fW) and low noise (NEP $\sim 10^{-19} W/Hz^{1/2}$) in the TES bolometers. We conclude the paper by comparing the performance of a $4 \cdot 10^{-19} W/Hz^{1/2}$ TES bolometer measured under DC and AC bias.
description: 6 pages, 5 figures
Impact of Emitter and Laser-Doped Line Conductivity on Nickel Light-Induced Plating
Creators: name: Sugianto, A.
name: Lennon, A.
name: Tjahjono, B.S.
name: Wenham, S.R.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2403-2407
description: The concept of a selective emitter appears to be the most eagerly pursued among the emerging, highefficiency
cell designs to overcome limitations associated with screen-printed solar cells. The selective emitter
technologies, such as laser doping, are increasingly looking into implementing a low-cost self-aligned metallization
technique to reduce cell manufacturing costs which is feasible through the use of the light-induced plating. In this
work, a thin layer of Ni is plated onto the selective emitter prior to plating the copper bulk, to form nickel silicide that
prevents the diffusion of copper into the active parts of the cell over time. The quality of the light-induced plated
nickel lines are characterized for varying critical parameters in the cell design, such as the conductivity of the laserdoped
lines and the lateral resistance of the emitter. Plating uniformity was found to be an important characteristic of
the plated lines to achieve high FF and ideality factor nearing unity. By improving plating uniformity, a cell FF of
77.3% and n 1.07 are achieved with an 18% final cell efficiency on the laser-doped selective emitter structure.
Tailoring the Inline Diffused Emitter (ILDE) Profiles for High Efficiency Screen-Printed Silicon Solar Cells
Creators: name: Rounsaville, B.
name: Ebong, A.
name: Kim, D.S.
name: Cooper, I.B.
name: Rohatgi, A.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2408-2411
description: The low-cost and high throughput concept for solar cell production is supported by the use of inline
diffusion furnaces to form solar cell emitters. Historically the efficiency of a solar cell manufactured in this fashion is
inferior to a cell that uses a POCl3 emitter. This is due to the associated contaminations from the metal belt and nonoptimization
of the contacting process. However, we can eliminate these issues through the use of ceramic rollers, double
side application of dopants and tailoring the emitter profile to match the POCl3 diffusion, and optimization of the contact
co-firing using a suitable front silver paste and light induced plating (LIP). In this paper we report on a simple process for
fabricating large area (239 cm2) 18.2% efficient silicon solar cells using ~70-Ω/sq inline diffused emitters (ILDE) tailored
to give identical peak surface phosphorous concentration as POCl3. The open circuit voltage of 627 mV supports the
emitter profile and emitter recombination associated with a ~70 Ω/sq emitter.
Re-evaluation of the $^{16}$O($n$,$γ$)$^{17}$O cross section at astrophysical energies and its role as neutron poison in the $s$ process
Creators: name: Mohr, Peter
name: Heinz, Christian
name: Pignatari, Marco
name: Dillmann, Iris
name: Mengoni, Alberto
name: Kaeppeler, Franz
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The doubly-magic nucleus $^{16}$O has a small neutron capture cross section of just a few tens of microbarn in the astrophysical energy region. Despite of this, $^{16}$O plays an important role as neutron poison in the astrophysical slow neutron capture ($s$) process due to its high abundance. We present in this paper a re-evaluation of the available experimental data for $^{16}$O($n,γ$)$^{17}$O and derive a new recommendation for the Maxwellian-averaged cross sections (MACS) between $kT$= 5$-$100 keV. Our new recommendations are lower up to $kT$= 60 keV compared to the previously recommended values but up to 14\% higher at $kT$= 100 keV. We explore the impact of this different energy dependence on the weak $s$-process during core helium- ($kT$= 26 keV) and shell carbon burning ($kT$= 90 keV) in massive stars where $^{16}$O is the most abundant isotope.
description: 13 pages, 7 figures; accepted for publication in Astrophys. J. (2016)
Lateral Spectrum Splitting Concentrator PV Modules: Performance, Energy Cost and Pathway to 40+%
Creators: name: Wang, X.
name: Barnett, A.
Publisher: name: WIP
Year: 2011
Subjects: Advanced Photovoltaics : New Concepts and Ultra-High Efficiency
Terrestrial Concentrator Systems

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 757-761
description: Lateral spectrum splitting (LSS) concentrator photovoltaics (CPV) of high module efficiency is
presented as an approach to low energy cost PV. This work starts with quantitative analysis of the value of module
efficiency in lowering levelized cost of energy (LCOE) for PV systems. It is concluded that module efficiency over
30% is required for CPV to be competitive with flat plate PV in the future. With that recognition, the module
efficiency losses for the currently dominant high concentration CPV adopting monolithic triple-junction solar cells
are discussed. To avoid or reduce these losses, middle concentration (mid-X) LSS CPV is proposed as a high
efficiency approach and a prototype submodule has demonstrated a record efficiency of 36.7%. Further
measurements and analyses lead to pathways to over 40% efficiency, which has been partially demonstrated by a
variation LSS design that is measured to have 38.5% submodule efficiency. With the demonstrated high performance
and the assumption of low-cost III-V solar cells that are being developed by several research programs, LCOE is
calculated for a mid-X LSS CPV configuration. By comparing the LCOE across different PV technologies, it is
concluded that the mid-X LSS CPV can achieve the lowest PV energy cost.
20% Laser Grooved Buried Contact Cz Silicon Solar Cells for the Apollon Project
Creators: name: Heasman, K.C.
name: Brown, L.M.
name: Cole, A.
name: Devenport, S.
name: Drew, K.
name: Morrison, D.
name: Serenelli, L.
name: De Iuliis, S.
name: Roca, F.
Publisher: name: WIP
Year: 2011
Subjects: Advanced Photovoltaics : New Concepts and Ultra-High Efficiency
Terrestrial Concentrator Systems

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 770-773
description: A Laser Grooved Buried Contact (LGBC) Czochralski (Cz) silicon concentrator cell has been designed
and produced as high efficient-cost effective devices for application in spectral splitting system that focuses longer
wavelength light onto silicon concentrator cells, and shorter wavelength light onto III-V multijunction cells. In order
to improve the near infra-red response of the Narec LGBC concentrator cell the quality of the efficiency limiting
sputtered aluminum back surface field (Al BSF) needed to be addressed. By incorporating a screen printed Al BSF
into the Narec process the near infra-red response of the cell has been improved. This paper describes the new hybrid
process and the performance of the concentrator cells under the specific illumination conditions from the CPOWER
receiver design. Cell efficiency of above 20% at concentration has been achieved with screen printing pastes from
two different suppliers. The highest efficiency achieved under the CPOWER receiver design illumination conditions
was 20.37%.
Instability in electromagnetically driven flows Part II
Creators: name: Imazio, Paola Rodriguez
name: Gissinger, Christophe
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: In a previous paper, we have reported numerical simulations of the MHD flow driven by a travelling magnetic field (TMF) in an annular channel, at low Reynolds number. It was shown that the stalling of such induction pump is strongly related to magnetic flux expulsion. In the present article, we show that for larger hydrodynamic Reynolds number, and with more realistic boundary conditions, this instability takes the form of a large axisymmetric vortex flow in the (r,z)-plane, in which the fluid is locally pumped in the direction opposite to the one of the magnetic field. Close to the marginal stability of this vortex flow, a low-frequency pulsation is generated. Finally, these results are compared to theoretical predictions and are discussed within the framework of experimental annular linear induction electromagnetic pumps.
High-order harmonic generation enhanced by XUV light
Creators: name: Buth, Christian
name: Kohler, Markus C.
name: Ullrich, Joachim
name: Keitel, Christoph H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The combination of high-order harmonic generation (HHG) with resonant XUV excitation of a core electron into the transient valence vacancy that is created in the course of the HHG process is investigated theoretically. In this setup, the first electron performs a HHG three-step process whereas, the second electron Rabi flops between the core and the valence vacancy. The modified HHG spectrum due to recombination with the valence and the core is determined and analyzed for krypton on the 3d -- > 4p resonance in the ion. We assume an 800 nm laser with an intensity of about 10^14 W/cm^2 and XUV radiation from the Free Electron Laser in Hamburg (FLASH) with an intensity in the range 10^13--10^16 W/cm^2. Our prediction opens perspectives for nonlinear XUV physics, attosecond x rays, and HHG-based spectroscopy involving core orbitals.
description: 4 pages, 2 figures, LaTeX, erratum added
General spin and pseudospin symmetries of the Dirac equation
Creators: name: Alberto, P.
name: Malheiro, M.
name: Frederico, T.
name: de Castro, A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In the 70's Smith and Tassie, and Bell and Ruegg independently found SU(2) symmetries of the Dirac equation with scalar and vector potentials. These symmetries, known as pseudospin and spin symmetries, have been extensively researched and applied to several physical systems. Twenty years after, in 1997, the pseudospin symmetry has been revealed by Ginocchio as a relativistic symmetry of the atomic nuclei when it is described by relativistic mean field hadronic models. The main feature of these symmetries is the suppression of the spin-orbit coupling either in the upper or lower components of the Dirac spinor, thereby turning the respective second-order equations into Schrödinger-like equations, i.e, without a matrix structure. In this paper we propose a generalization of these SU(2) symmetries for potentials in the Dirac equation with several Lorentz structures, which also allow for the suppression of the matrix structure of second-order equation equation of either the upper or lower components of the Dirac spinor. We derive the general properties of those potentials and list some possible candidates, which include the usual spin-pseudospin potentials, and also 2- and 1-dimensional potentials. An application for a particular physical system in two dimensions, electrons in graphene, is suggested.
description: 7 pages, uses RevTeX macros, accepted for publication in Phys. Rev. A
Gaussian rational points on a singular cubic surface
Creators: name: Derenthal, Ulrich
name: Janda, Felix
Publisher: name: arXiv
Year: 2011
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 11D45 (Primary) 14G05, 14M25 (Secondary)

description: Manin's conjecture predicts the asymptotic behavior of the number of rational points of bounded height on algebraic varieties. For toric varieties, it was proved by Batyrev and Tschinkel via height zeta functions and an application of the Poisson formula. An alternative approach to Manin's conjecture via universal torsors was used so far mainly over the field Q of rational numbers. In this note, we give a proof of Manin's conjecture over the Gaussian rational numbers Q(i) and over other imaginary quadratic number fields with class number 1 for the singular toric cubic surface defined by t^3=xyz.
description: 16 pages
A model for the relatively free graded algebra of block triangular matrices with entries from a graded algebra
Creators: name: de Mello, Thiago Castilho
name: Centrone, Lucio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: Let G be a group and A be a G-graded algebra satisfying a polynomial identity. We buid up a model for the relative free G-graded algebra and we obtain, as an application, the "factoring" property for the T_G-ideals of block triangular matrices with entries from the finite dimensional Grassmann algebra E for some particular Z_2-grading.
FASTCAT-Edge: build your own smart camera trap
Creators: name: Justamante, Ángela
name: Leymarie, Frederic Fol
name: Rueger, Stefan
name: Waddington, Kai
name: Miklas Riechmann
name: Rueger, Ryan
name: Gardiner, Ross
name: Liu, Clara
name: Liñán, Sonia
name: Soacha, Karen
name: Piera, Jaume
Publisher: name: Zenodo
Year: 2023
Subjects: camera trap
do-it-yourself
citizen science
biodiversity
artificial intelligence
AI

description: FASTCAT (Flexible AI SysTem for CAmera Traps)-Edge allows you to assemble an AI camera trap that: (1) Automatically filters out most unwanted pictures and video streams, keeping images of animals. This saves you time as you don’t have to delete empty recordings or photos. (2) The camera trap uses bespoke Artificial Intelligence (AI) to automatically identify whether a scene contains an animal or a human, ie, this allows you to only keep animal scenes. (3) Eventually, this service will connect with biodiversity citizen observatories. So, if you are a citizen scientist who uses a camera trap, you will be able to easily upload the picture to some platforms such as iSpot, Artportalen or Natusfera. More information: https://cos4cloud-eosc.eu/services/fastcat-edge-camera-trap/ FASTCAT-Edge has been developed by DynAikon in the Cos4Cloud framework. Infographic's designer: Lucas Wainer.
Ink Jetted Seed and Plated Grid Solar Cells with Homogeneous High Sheet Resistance Emitters
Creators: name: Ebong, A.
name: Renshaw, J.S.
name: Rounsaville, B.
name: Cooper, I.B.
name: Tate, K.
name: Rohatgi, A.
name: Glunz, S.W.
name: Hörteis, M.
name: Mette, A.
name: Gundermann, M.
name: Dovrat, M.
name: Kritchman, E.
name: Brusilovsky, D.
name: Benichou, A.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2390-2394
description: Narrow and tall gridlines in addition to homogeneous high sheet resistance emitter are needed to improve
the solar cell efficiency. This combination will minimize shading, increase short circuit current and decrease the emitter
dark saturation current while increasing the open circuit voltage. However, neither the screen-printing technology can
produce fine and tall gridlines nor the commercial front silver pastes are able to contact high sheet resistance emitters
with low contact resistance. The high gridline aspect ratio can be achieved with Xjet’s inkjet printer at speeds double that
of screen-printed cells. The silver ink for contacts fully printed with this technology is still under development. In this
investigation we used a two-step contacts approach; seed layer and plate after co-firing in order to optimize the ink
formulation to achieve high quality contacts to high emitter sheet resistance in the range of 100-110 /sq. The as written
gridline width was ~38 μm and ~4 μm height, which grew to ~ 65 μm wide ~9 μm tall after light-induced plating of
silver. The final cell performance was observed to be dependent on the amount of jetted ink (dosage) used; whether 6 (A),
8 (B) or 10 (C) layers or dosage. The fill factor increased as the dosage increases but the short-circuit current and opencircuit
voltage did not follow this trend. These are preliminary results which require more work. We have achieved
18.5% average and 18.7% best efficiencies on large area (239 cm2) silicon solar cells with dosage C.
Day4TM Technology Allows Enhanced Fine-Line Front Metallization for Low Cost Mass Production
Creators: name: Grischke, R.
name: Efinger, R.
name: Rubin, L.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2399-2402
description: The front metallization of a solar cell is a balance between maximum electrical and optical
performance. On one hand it must provide a sufficiently low-resistive current collection and on the other hand it has
to cause as little shading as possible. The decrease of shading losses by reducing the finger width has been
approached with various kinds of novel metallization methods. The main challenge is keeping the line resistivity low
to reduce series resistance losses. In this work, we will demonstrate that enhanced fine line screen printing with low
aspect ratio (finger height/finger width) approach is viable with employment of Day4 Energy’s™ electrode
technology [1]. We will demonstrate that Day4TM Technology has low sensitivity to high finger line resistivity; thus
allows achieving high fill factors on fine line fingers of  70 μm printed in a single screen printing step. This results
in a cell efficiency gain of 0.16% absolute due to shading reduction. Compared to a conventional H-grid pattern a
Day4 solar cell abandons front side bus bar printing and silver pads on rear side and thus gains up to 8 mV in Voc
due to better surface passivation because of a full BSF and less metallization on the front side. A fine line printed
Day4 solar cell can gain up to 0.5% absolute cell efficiency compared to a conventional bus bar cell and
simultaneously save 85% silver paste consumption.
On the Sylvester-Gallai and the orchard problem for pseudoline arrangements
Creators: name: Bokowski, Jürgen
name: Pokora, Piotr
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 52C30, 32S22

description: We study a non-trivial extreme case of the orchard problem for $12$ pseudolines and we provide a complete classification of pseudoline arrangements having $19$ triple points and $9$ double points. We have also classified those that can be realized with straight lines. They include new examples different from the known example of Böröczky. Since Melchior's inequality also holds for arrangements of pseudolines, we are able to deduce that some combinatorial point-line configurations cannot be realized using pseudolines. In particular, this gives a negative answer to one of Grünbaum's problems. We formulate some open problems which involve our new examples of line arrangements.
description: 5 figures, 11 pages, to appear in Periodica Mathematica Hungarica
Resource Sharing in 5G mmWave Cellular Networks
Creators: name: Rebato, Mattia
name: Mezzavilla, Marco
name: Rangan, Sundeep
name: Zorzi, Michele
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In this paper, we discuss resource sharing, a key dimension in mmWave network design in which spectrum, access and/or network infrastructure resources can be shared by multiple operators. It is argued that this sharing paradigm will be essential to fully exploit the tremendous amounts of bandwidth and the large number of antenna degrees of freedom available in these bands, and to provide statistical multiplexing to accommodate the highly variable nature of the traffic. In this paper, we investigate and compare various sharing configurations in order to capture the enhanced potential of mmWave communications. Our results reflect both the technical and the economical aspects of the various sharing paradigms. We deliver a number of key insights, corroborated by detailed simulations, which include an analysis of the effects of the distinctive propagation characteristics of the mmWave channel, along with a rigorous multi-antenna characterization. Key findings of this study include (i) the strong dependence of the comparative results on channel propagation and antenna characteristics, and therefore the need to accurately model them, and (ii) the desirability of a full spectrum and infrastructure sharing configuration, which may result in increased user rate as well as in economical advantages for both service provider.
Implementation of Web Monitoring System Based Web Services for Photovoltaic Systems
Creators: name: Ryu, Y.
name: Kim, Y.
name: Cha, H.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
Balance of System Components

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3766-3768
description: Web services is a necessary technology for the monitoring system because the standard protocol, such
as HTTP can communicate at real time, at everywhere without fire wall’ restrictions. In addition, SOAP message by
XML is Platform independent and easy in system expansion and integration. This paper deals with web monitoring
system for the photovoltaic power plants, which is easy in system installation and powerful in power system
management and diagnosis.
Review of Active Balancing Methods Used in Advanced Storage Systems for Photovoltaic Applications
Creators: name: Reynaud, J.F.
name: Gantet, O.
name: Aloisi, P.
name: Estibals, B.
name: Alonso, C.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
Balance of System Components

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3786-3790
description: An approach to the analysis and design of a bidirectional DC power converter for the cell voltage
balancing control of a series connected lithium-ion battery string is presented in this paper. The proposed Cell
Balancing Circuit is designed to transfer the energy from the fully charged battery cell to the weakest one using a
switch mode power converter operation. This operation maintains cell batteries at the same State-Of-Charge (SOC)
and voltage range. Unlike previous battery balancing circuits, the balancing method uses only one magnetic
component, resulting small size system. Simulation and experimental results show that the proposed cell balancing
method can not only enhance the bidirectional battery equalization performance, but can also reduce the switching
loss during the equalization period. Experiment results are provided to verify the operating principle of the proposed balancing method with specific photovoltaic operations.
Optimization of Hydrogenated Amorphous Silicon (a-Si:H) Thin Films Deposited by RF Magnetron Sputtering for a-Si/c-Si Photovoltaic Applications
Creators: name: Eygi, Z.D.
name: Bostancı, U.
name: Turan, R.
name: Erçelebi, Ç.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Thin Films Solar Cells
Amorphous and Microcrystalline Silicon Solar Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2812-2813
description: In this work, hydrogenated amorphous silicon (a-Si: H) deposited by RF magnetron sputtering with
argon and hydrogen gas mixture plasma has been characterized. We focused on the effects of deposition parameters,
such as discharge power, substrate temperature and hydrogen flow rate on the properties of the fabricated a-Si:H
films . Various diagnostics techniques such as Raman spectroscopy, optical transmission measurements, Fourier
Transform Infrared (FTIR) spectroscopy were employed to determine optimum deposition conditions for a-Si:H films
with sufficient quality for photovoltaic applications