cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Unusual Polar Conditions in Solar Cycle 24 and their Implications for Cycle 25
Creators: name: Gopalswamy, Nat
name: Yashiro, Seiji
name: Akiyama, Sachiko
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report on the prolonged solar-maximum conditions until late 2015 at the north-polar region of the Sun indicated by the occurrence of high-latitude prominence eruptions and microwave brightness temperature close to the quiet Sun level. These two aspects of solar activity indicate that the polarity reversal was completed by mid-2014 in the south and late 2015 in the north. . The microwave brightness in the south-polar region has increased to a level exceeding the level of cycle 23/24 minimum, but just started to increase in the north. The north-south asymmetry in the polarity reversal has switched from that in cycle 23. These observations lead us to the hypothesis that the onset of cycle 25 in the northern hemisphere is likely to be delayed with respect to that in the southern hemisphere. We find that the unusual condition in the north is a direct consequence of the arrival of poleward surges of opposite polarity from the active region belt. We also find that multiple rush-to-the-pole episodes were indicated by the prominence eruption locations that lined up at the boundary between opposite polarity surges. The high-latitude prominence eruptions occurred in the boundary between the incumbent polar flux and the insurgent flux of opposite polarity.
description: 12 pages, 4 figures, 1 table, Accepted for publication in ApJ Lett. on May 6, 2016
BBr3 Diffusion: Process Optimization for High-Quality Emitters with Industrial Cycle Times
Creators: name: Lohmüller, E.
name: Glatz, M.
name: Lohmüller, S.
name: Belledin, U.
name: Mack, S.
name: Fellmeth, T.
name: Naber, R.C.G.
name: Wolf, A.
Publisher: name: WIP
Year: 2020
Subjects: Silicon Materials and Cells
Manufacturing & Production of Si Cells

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 364-369
description: We demonstrate tube furnace BBr3 diffusion processes for the formation of high-quality homogeneous boron emitters with industrial cycle times of around 2 hours. They feature emitter dark saturation current densities as low as 17 fA/cm² for textured surfaces at a sheet resistance of about 150 Ω/sq. In order to achieve the respective doping profiles with a maximum charge carrier concentration slightly above 1019 cm-3 and profile depths of about 800 nm, we optimize the atmospheric pressure BBr3 diffusion such that we make use of an increased maximum temperature (below 1000°C) that yields accelerated diffusion of boron atoms. In addition, careful parameter adjustment assures that the total boron doping dose in the silicon is maintained, despite the temperature increase. This optimization shows a great potential in reducing cycle times without compromising the quality of the formed boron emitters and their respective doping profiles.
The 1997 Event in the Crab Pulsar in X-rays
Creators: name: Vivekanand, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In October 1997, radio pulses from the Crab Pulsar underwent abnormal delay. This was reported by two radio observatories, both of which explained this frequency dependent and time varying delay as being due to refractive effects of ionized shells in the Crab Nebula. Both groups also noted that, curiously and confusingly coincident with the frequency dependent delay, the Crab Pulsar also underwent an unusual slowing down, which they believed to be unrelated to the Crab Nebula and instead intrinsic to the Crab Pulsar, resulting in an additional delay that was frequency independent. However, it now appears that one of the groups attributes the frequency independent delay also to refractive effects. This work aims to verify whether at least a part of the frequency independent delay is indeed due to intrinsic slowing down of the Crab Pulsar. Timing analysis of the Crab Pulsar's October 1997 event has been done in X-rays, which are not delayed by the refractive and diffractive effects that affect radio waves; at X-rays only the intrinsic slowing down should contribute to any observed delay. Data mainly from the PCA instrument aboard the RXTE satellite have been used, along with a small amount of data from the PDS instrument aboard the BeppoSAX satellite. Analysis of the X-ray data, using the very accurate reference timing mode derived at radio frequencies, strongly supports the intrinsic slowing down hypothesis. Analysis using the reference timing model derived self-consistently from the limited X-ray data, which is less accurate, is not completely unambiguous regarding the above two hypotheses, but provides reasonable support for the intrinsic slowing down hypothesis. A significant fraction of the frequency independent delay during the October 1997 event is indeed due to intrinsic slowing down of the Crab Pulsar.
description: Accepted for publication as Research Note in A&A
Innovative Process Control on Premium Technology Photovoltaic Cell and Module Manufacturing Line
Creators: name: Rametta, F.
name: Gerardi, C.
name: Iuvara, D.
name: Arena, E.
name: Bizzarri, F.
name: Barth, V.
name: Muñoz, D.
name: Favre, W.
name: Izzi, M.
name: Colletti, C.
Publisher: name: WIP
Year: 2020
Subjects: Silicon Materials and Cells
Manufacturing & Production of Si Cells

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 346-349
description: A premium photovoltaic module technology with high efficiency, high reliability, and low LCOE has been industrialized in Europe by Enel Green Power through the AMPERE project. An innovative full-scale automated 200MWp/y production line of SHJ bifacial cells and modules has been started up in 2019 at the Enel Green Power 3SUN Fab in Catania (Italy). All the processes, methods, techniques, automation systems developed in the project and used in production represent an innovation with respect to the current practice in PV industry. Even if similar methodologies are currently used in other manufacturing fields, such as semiconductor or automotive manufacturing, the use of Industry 4.0 process control is absolutely innovative for the PV manufacturing process control. The implementation of a Manufacturing Execution System to assure the tracking and the traceability of the product is mandatory in a premium technology PV manufacturing fab, in order to optimize the efficiency of the production line and the asset utilization and to improve the quality of the finished product. In the present work we will focus on the usage of MES and of Process Control techniques in the manufacturing lines for yield and quality enhancement. A nonexhaustive selection of innovative process control tools are showed.
Photon statistics on the extreme entanglement
Creators: name: Zhang, Yang
name: Zhang, Jun
name: Yu, Chang-shui
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The effects of photon bunching and antibunching correspond to the classical and quantum features of the electromagnetic field, respectively. No direct evidence suggests whether these effects can be potentially related to quantum entanglement. Here we design a cavity quantum electrodynamics model with two atoms trapped in to demonstrate the connections between the steady-state photon statistics and the two-atom entanglement . It is found that within the weak dissipations and to some good approximation, the local maximal two-atom entanglements perfectly correspond to not only the quantum feature of the electromagnetic field---the optimal photon antibunching, but also the classical feature---the optimal photon bunching. We also analyze the influence of strong dissipations and pure dephasing. An intuitive physical understanding is also given finally.
description: 12 pages, 4 figures
AGN host galaxy mass function in COSMOS: is AGN feedback responsible for the mass-quenching of galaxies?
Creators: name: Bongiorno, A.
name: Schulze, A.
name: Merloni, A.
name: Zamorani, G.
name: Ilbert, O.
name: La Franca, F.
name: Peng, Y.
name: Piconcelli, E.
name: Mainieri, V.
name: Silverman, J. D.
name: Brusa, M.
name: Fiore, F.
name: Salvato, M.
name: Scoville, N.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the role of supermassive black holes in the global context of galaxy evolution by measuring the host galaxy stellar mass function (HGMF) and the specific accretion rate i.e., lambda_SAR, distribution function (SARDF) up to z~2.5 with ~1000 X-ray selected AGN from XMM-COSMOS. Using a maximum likelihood approach, we jointly fit the stellar mass function and specific accretion rate distribution function, with the X-ray luminosity function as an additional constraint. Our best fit model characterizes the SARDF as a double power-law with mass dependent but redshift independent break whose low lambda_SAR slope flattens with increasing redshift while the normalization increases. This implies that, for a given stellar mass, higher lambda_SAR objects have a peak in their space density at earlier epoch compared to the lower lambda_SAR ones, following and mimicking the well known AGN cosmic downsizing as observed in the AGN luminosity function. The mass function of active galaxies is described by a Schechter function with a almost constant Mstar* and a low mass slope alpha that flattens with redshift. Compared to the stellar mass function, we find that the HGMF has a similar shape and that, up to log((Mstar/Msun)~11.5 the ratio of AGN host galaxies to star forming galaxies is basically constant (~10%). Finally, the comparison of the AGN HGMF for different luminosity and specific accretion rate sub-classes with the phenomenological model prediction by Peng et al. (2010) for the "transient" population, i.e. galaxies in the process of being mass-quenched, reveals that low-luminosity AGN do not appear to be able to contribute significantly to the quenching and that at least at high masses, i.e. Mstar>10^(10.7) Msun , feedback from luminous AGN (log(Lbol)>~46 [erg/s]) may be responsible for the quenching of star formation in the host galaxy.
description: 15 pages, 10 figures, accepted for publication in A&A
Software Vosviewer para Análise da Produção Científica
Creators: name: GANDRA, Valquer Cleyton Paes
Publisher: name: Zenodo
Year: 2023
Subjects: VosViewer;
Biibliometria
Produção científica
Cientometria

description: Apresentação como convidado da Dra. Bruna Nascimento na palestra "Produção Científica e os Estudos métricos de Informação" no mês do Bibliotecário de 2023, promovido pelo Conselho Regional de Biblioteconomia do Rio de Janeiro (CRB-7). Pontua as aplicações dos índices bibliométricos nas análise de produção científica com o software Vosviewer para construção de gráficos com nodos.
Improvement of the Quality of Multicrystalline-Silicon Wafers for the Manufacture of Silicon Heterojunction Solar Cells
Creators: name: Barrio Martin, R.
name: González Peñalba, N.
name: Torres, I.
name: Cárabe, J.
name: Gandía, J.J.
Publisher: name: WIP
Year: 2020
Subjects: Silicon Materials and Cells
Manufacturing & Production of Si Cells

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 350-353
description: The aim of this investigation is to establish an affordable process to improve the quality of multicrystalline (mcSi) wafers to be able to manufacture efficient low-cost and more sustainable Silicon Heterojunction Solar Cells (HIT). In this work, we propose a previous method to the fabrication of the cells, which consists on the passivation of the defects of the bulk of mcSi wafers with hydrogen (H) through the growth of hydrogenated silicon nitride (SiNx:H) thin layers by PECVD, using nitrogen (N2) and pure silane (SiH4) as precursor gases and without ammonia (NH3). SiNx:H obtained, provide enough H content and adequate properties to passivate a posteriori mc-Si wafers efficiently and to increase their minority carrier lifetimes. A post-annealed treatment is necessary to release the atomic hydrogen (H) from the SiNx:H and diffuses it through the bulk of mc-Si wafers. Finally, SiNx:H layers are completely removed, leaving surfaces ready for the growth of the subsequent thin layers and without the need for additional cleaning steps previous the manufacture of HIT solar cells. This passivation process can be also applied to HIT industrial technology based of low-cost p-type CZ silicon wafers.
Note: Brownian motion of colloidal particles of arbitrary shape
Creators: name: Cichocki, Bogdan
name: Ekiel-Jezewska, Maria L.
name: Wajnryb, Eligiusz
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The analytical expressions for the time-dependent cross-correlations of the translational and rotational Brownian displacements of a particle with arbitrary shape are derived. The reference center is arbitrary, and the reference frame is such that the rotational-rotational diffusion tensor is diagonal.
description: 2 pages
Advanced Light-Trapping Structures for Back-Contact Solar Cells Produced by Metal-Assisted Chemical Etching
Creators: name: Pera, D.M.
name: Frota, A.
name: Costa, I.
name: Vilhena, D.
name: Canhoto Cardoso, J.
name: Gaspar, G.
name: Lobato, K.
name: Almeida Serra, J.M.
name: Almeida Silva, J.
Publisher: name: WIP
Year: 2020
Subjects: Silicon Materials and Cells
Manufacturing & Production of Si Cells

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 354-357
description: We present here an optimisation study of a method to reduce the reflectivity of monocrystaline silicon wafers. The method is based a metal-assisted chemical etching (MACE) technique that uses hydrogen peroxide (H2O2) and hydrofluoric (HF) as etchants, and silver as catalyst. During this study, several etching times and etchant concentrations were tested and the role of etchants molar ratio () was examined. The study shows that the method can severely reduce the effective reflectivity (Reff) of the wafers, reaching values as low as 3.15%. Also, an interesting correlation between the processed wafers’ Reff and was noticed. Scan electron microscope observations of the etched samples exhibited randomly created nanostructures with both high and low aspect-ratios.
Scaled up low-mass star formation in massive star-forming cores in the G333 giant molecular cloud
Creators: name: Wiles, B.
name: Lo, N.
name: Redman, M. P.
name: Cunningham, M. R.
name: Jones, P. A.
name: Burton, M. G.
name: Bronfman, L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Three bright molecular line sources in G333 have recently been shown to exhibit signatures of infall. We describe a molecular line radiative transfer modelling process which is required to extract the infall signature from Mopra and Nanten2 data. The observed line profiles differ greatly between individual sources but are reproduced well by variations upon a common unified model where the outflow viewing angle is the most significant difference between the sources. The models and data together suggest that the observed properties of the high-mass star-forming regions such as infall, turbulence, and mass are consistent with scaled-up versions of the low-mass case with turbulent velocities that are supersonic and an order of magnitude larger than those found in low-mass star-forming regions. Using detailed radiative transfer modeling, we show that the G333 cores are essentially undergoing a scaled-up version of low mass star formation. This is an extension of earlier work in that the degree of infall and the chemical abundances are constrained by the RT modeling in a way that is not practical with a standard analysis of observational data. We also find high velocity infall and high infall mass rates, possibly suggesting accelerated collapse due to external pressure. Molecular depletion due to freeze-out onto dust grains in central regions of the cores is suggested by low molecular abundances of several species. Strong evidence for a local enhancement of 13C-bearing species towards the outflow cloud cores is discussed, consistent with the presence of shocks caused by the supersonic motions within them.
description: MNRAS (accepted)
Revealing the Nano-Scale Structure and Properties of Pinholes in SiOx Layers for POLO Contacts
Creators: name: Guthrey, H.
name: Kale, A.S.
name: Lima Salles De Souza, C.
name: Nemeth, W.
name: Page, M.
name: Agarwal, S.
name: Young, D.
name: Al-Jassim, M.M.
name: Stradins, P.
Publisher: name: WIP
Year: 2020
Subjects: Silicon Materials and Cells
Characterisation & Simulation of Si Cells

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 340-342
description: In this contribution, we report on the charge collection characteristics of silicon photovoltaic devices with passivated contacts based on the c-Si/SiOx/poly-Si structure. Using electron-beam induced current (EBIC) imaging in plan-view and cross-section orientations, we find that charge collection in a device with a 1.5-nm-thick SiOx layer is fairly uniform in the p-n junction region and does not appear to be influenced by pyramidal surface texture. In contrast, a device with a 2.2-nm-thick oxide layer shows significant spatial variation in the charge-collection signal. The locations where we observe preferential collection of excess carriers is very sensitive to the processing conditions used to grow and breakup the SiOx passivation layer. In some cases the apexes of the pyramids exhibit reduced EBIC signal as the valleys between adjacent pyramids show the strongest collection. Other conditions yield enhanced charge collection at well defined spots on pyramid faces with no observable collection in the valleys.
Nonequilibrium Kinetics of One-Dimensional Bose Gases
Creators: name: Baldovin, F.
name: Cappellaro, A.
name: Orlandini, E.
name: Salasnich, L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study cold dilute gases made of bosonic atoms, showing that in the mean-field one-dimensional regime they support stable out-of-equilibrium states. Starting from the 3D Boltzmann-Vlasov equation with contact interaction, we derive an effective 1D Landau-Vlasov equation under the condition of a strong transverse harmonic confinement. We investigate the existence of out-of-equilibrium states, obtaining stability criteria similar to those of classical plasmas.
description: 16 pages, 6 figures, accepted for publication in Journal of Statistical Mechanics: Theory and Experiment
Vorwort
Creators: name: Metz, Johann Baptist
name: Oelmüller, Willi
name: Bröker, Werner
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 6 Nr. 6/7 (1970): Concilium: Internationale Zeitschrift für Theologie, Band 6, Heft 6/7
Complex singularities and PDEs
Creators: name: Caflisch, R. E.
name: Gargano, F.
name: Sammartino, M.
name: Sciacca, V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper we give a review on the computational methods used to characterize the complex singularities developed by some relevant PDEs. We begin by reviewing the singularity tracking method based on the analysis of the Fourier spectrum. We then introduce other methods generally used to detect the hidden singularities. In particular we show some applications of the Padé approximation, of the Kida method, and of Borel-Polya method. We apply these techniques to the study of the singularity formation of some nonlinear dispersive and dissipative one dimensional PDE of the 2D Prandtl equation, of the 2D KP equation, and to Navier-Stokes equation for high Reynolds number incompressible flows in the case of interaction with rigid boundaries.
Mental Health of Zoomers_A Cleansing Analysis.pdf
Creators: name: Leo, Dr. A.Michael J
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 520102
subject: Educational psychology
classificationCode: 390404
subject: Educational counselling
classificationCode: 390403
subject: Educational administration, management and leadership

description: Describes A Cleansing Approach to the Mental health of Zoomers
Investigation of Bifacial PERC Cells Based on Rear Side SiOxNy Passivation
Creators: name: Kuo, C.-W.
name: Kuan, T.-M.
name: Chueh, W.-L.
name: Wu, L.-G.
name: Lin, S.-C.
name: Yu, C.-Y.
Publisher: name: WIP
Year: 2020
Subjects: Silicon Materials and Cells
Manufacturing & Production of Si Cells

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 343-345
description: In this paper, we demonstrated that the p-type bifacial PERC solar cells can also be completed using rear side SiOxNy passivation layer. Because the passivation effect of SiOxNy passivation layer is difference with Al2O3 passivation layer. It mean we need to do more experiments to determine the rear side conditions, including polishing conditions, rear side laser conditions, and etc. In the polishing process, we use the recipe of mass producing mono PERC and try to deepen the polishing thickness. It could be found that the front side efficiency for bifacial cells which deepen the polishing thickness has improved , but the rear side efficiency has decreased significantly. It also was adjusted the rear side aluminum finger width of 120m and 150m for the bifacial PERC cells, respectively. From the experimental results, there is no difference in front side efficiency, a significant average efficiency gain of 0.2% for rear side was achieved. Finally, by optimizing the rear structure, the bifacial PERC solar cells achieved the best performance with average front and rear side efficiency of 21.90% and 16.16% respectively.
Spin polarization of Majorana zero modes and topological quantum phase transition in semiconductor Majorana nanowires
Creators: name: Stanescu, Tudor D.
name: Tewari, Sumanta
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A number of recent works have discussed the issue of spin polarization of a Majorana zero mode in condensed matter systems. Here we show that the spin polarization density of a Majorana zero mode, computed as an average of the spin operator over its wave function, vanishes everywhere. A single non-degenerate Majorana zero mode, therefore, does not couple to an applied magnetic field, except via hybridization with higher energy excited states (if present), which may perturb its wave function. If `spin' is defined by considering only the particle components of the wave function, as has been done in some recent works, Majorana zero modes do have a non-zero spatial profile of this quantity, measurable in scanning tunneling microscopy (STM) experiments. However, if such a quantity is measured in spin-resolved tunneling experiments (without spatial resolution), we show that it cannot be used as a unique signature of Majorana zero modes in the topologically non-trivial superconducting phase. As a byproduct, we show that in spatially inhomogeneous systems, accidental zero energy modes, which for all practical purposes behave as Majorana zero modes (including giving rise to a zero bias conductance peak of height 2e^2/h), can appear with increasing magnetic field even in the absence of a topological quantum phase transition (TQPT). But only after gap closing and the associated TQPT, the modes are localized near the system edges, resulting in the maximum topological protection. In the light of these considerations, demonstrating the nonlocal character of the topologically-protected Majorana pair and its emergence {\em after} the systems undergo a TQPT, become critical tasks for the ongoing experimental search for Majorana bound states in condensed matter systems.
description: 11 pages, 9 figures
A Simplified Double Diode Model for Modeling I-V Characteristic of Si Solar Cells
Creators: name: Zhang, J.
name: Wu, J.
name: Ding, K.
name: Feng, L.
name: Hamelmann, F.U.
name: Chen, X.
Publisher: name: WIP
Year: 2020
Subjects: Silicon Materials and Cells
Characterisation & Simulation of Si Cells

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 336-339
description: Recently, the fault detection and diagnosis of PV systems attracts more attention than ever, due to increasing global installation capacity. The mathematical model of solar cells is the basis of the fault detection and diagnosis of PV systems. In this paper, a simplified double diode model is proposed to reduce the number of model parameters. The detail derivation of the simplified model is explained and the accuracy of the proposed model is verified by the measured I-V curves of the mc-Si PV module. The comparison results show that the proposed simplified model can obtain acceptable accuracy for the engineering application.
Measuring and Mitigating Edge Recombination in Modules Employing Cut Cells
Creators: name: Tune, D.D.
name: Buchholz, F.
name: Ullmann, I.
name: Halm, A.
Publisher: name: WIP
Year: 2020
Subjects: Silicon Materials and Cells
Characterisation & Simulation of Si Cells

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 322-328
description: Power losses in solar cells and modules due to recombination at cut cell edges is a problem of increasing concern since many new and future module concepts use cut cells, and particularly as the PV industry moves to larger wafer formats. Herein, we first demonstrate the use of high resolution photoluminescence imaging combined with quasi steady state photoconductance measurements to calculate carrier lifetime directly from photoluminescence images, and discuss the factors and limitations involved in this method. We then compare the edge recombination dynamics in interdigitated back contact solar cells and heterojunction solar cells as a function of the method used to cut them, and show several important differences. Finally, we explore some edge passivation strategies that could be used to mitigate the negative effects of cutting.
Computational Optical Analysis of 3D Modeled Crystalline Silicon Substrates Randomly Textured
Creators: name: Pera, D.M.
name: Canhoto Cardoso, J.
name: Vilhena, D.
name: Gaspar, G.
name: Lobato, K.
name: Costa, I.
name: Almeida Serra, J.M.
name: Almeida Silva, J.
Publisher: name: WIP
Year: 2020
Subjects: Silicon Materials and Cells
Characterisation & Simulation of Si Cells

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 329-331
description: This work proposes to demonstrate a workflow to access the optical performance of randomly texturized silicon substrates using a numerical 3D image reconstruction algorithm followed by Finite-Difference Time-Domain (FDTD) simulations based on direct integration of Maxwell’s time-dependent equations. The characterized samples were obtained by metal-assisted chemical etching and have no particular patterning and show irregular light-trapping structures with variable dimensions. The method was successfully validated by comparing the effective reflectivity for the solar spectrum AM1.5g with experimental measurements. The obtained results indicate a potential improvement of the accuracy of computational simulations of optical generation rates associated with highly complex micro and nanostructured surfaces to be applied to electro-dynamic simulations of photonic crystals as photovoltaic devices.
Assessment of Influencing Factors on Lifetime-Based Defect Analysis
Creators: name: Post, R.
name: Niewelt, T.
name: Kwapil, W.
name: Schubert, M.C.
Publisher: name: WIP
Year: 2020
Subjects: Silicon Materials and Cells
Characterisation & Simulation of Si Cells

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 332-335
description: Since most detection methods are not sensitive enough to detect and characterize recombination active defects in silicon lifetime spectroscopy is an important method in silicon photovoltaics. It is a powerful tool, that can determine the defect parameters Et and k via the analysis of defect parameter solution surfaces. But despite being a crucial method there is no convention for the assessment of uncertainties. This work lines out a possible way to characterize the uncertainty of the method by a simulation of statistical noise onto lifetime curves following the Shockley-Read-Hall-statistics. The uncertainty analysis is done for one exemplary set of defect parameters. It outlines how prone to wrongful parametrization this method can be, if not conducted with great care. Thereby the suggested approach can act as a tool to decrease the uncertainty of the method by understanding, which influences are most crucial to control.
Intrinsic rotation drive by collisionless trapped electron mode turbulence
Creators: name: Wang, Lu
name: Peng, Shuitao
name: Diamond, P. H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Both the parallel residual stress and parallel turbulent acceleration driven by electrostatic collisionsless trapped electron mode (CTEM) turbulence are calculated analytically using gyrokinetic theory. Quasilinear results show that the parallel residual stress contributes an outward flux of co-current rotation for normal magnetic shear and turbulence intensity profile increasing outward. This may induce intrinsic counter-current rotation or flattening of the co-current rotation profile. The parallel turbulent acceleration driven by CTEM turbulence vanishes, due to the absence of a phase shift between density fluctuation and ion pressure fluctuation. This is different from the case of ion temperature gradient (ITG) turbulence, for which the turbulent acceleration can provide co-current drive for normal magnetic shear and turbulence intensity profile increasing outward. Its order of magnitude is predicted to be the same as that of the divergence of the residual stress [Lu Wang and P.H. Diamond, Phys. Rev. Lett. {\bf 110}, 265006 (2013)]. A possible connection of these theoretical results to experimental observations of electron cyclotron heating effects on toroidal rotation is discussed.
description: Accepted by Phys. Plasmas
New Device for Accurate Measurement of Busbarless Bifacial Solar Cells by Using N.I.C.E.™ Technology
Creators: name: Reinwand, D.
name: Wiechers, P.
name: Kray, D.
Publisher: name: WIP
Year: 2020
Subjects: Silicon Materials and Cells
Characterisation & Simulation of Si Cells

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 312-316
description: In this work the construction and characterization of a new device for the accurate measurement of busbarless, bifacial solar cells is presented. The measuring apparatus was designed and built according to the principle of the N.I.C.E.™ (New Industrial Cells Encapsulation) technology. For reasons of comparability, the measurement setup was based as closely as possible on the setup of manufactured N.I.C.E.™ mini modules. This equipment is used to determine the series resistance as a function of the vacuum and the temperature prevailing in the module. The results obtained are then compared with the results of manufactured solar modules in order to assess how well the test setup predicts the performance of the cell in the subsequent module.
Correntropy Maximization via ADMM - Application to Robust Hyperspectral Unmixing
Creators: name: Zhu, Fei
name: Halimi, Abderrahim
name: Honeine, Paul
name: Chen, Badong
name: Zheng, Nanning
Publisher: name: arXiv
Year: 2016
Subjects: subject: Machine Learning (stat.ML)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: In hyperspectral images, some spectral bands suffer from low signal-to-noise ratio due to noisy acquisition and atmospheric effects, thus requiring robust techniques for the unmixing problem. This paper presents a robust supervised spectral unmixing approach for hyperspectral images. The robustness is achieved by writing the unmixing problem as the maximization of the correntropy criterion subject to the most commonly used constraints. Two unmixing problems are derived: the first problem considers the fully-constrained unmixing, with both the non-negativity and sum-to-one constraints, while the second one deals with the non-negativity and the sparsity-promoting of the abundances. The corresponding optimization problems are solved efficiently using an alternating direction method of multipliers (ADMM) approach. Experiments on synthetic and real hyperspectral images validate the performance of the proposed algorithms for different scenarios, demonstrating that the correntropy-based unmixing is robust to outlier bands.
description: 23 pages
Comparing Microwave Detected Photoconductance, Quasi Steady State Photoconductance and Photoluminiscence Imaging for Iron Analysis in Silicon
Creators: name: Pengerla, M.
name: Al-Hajjawi, S.
name: Kuruganti, V.
name: Haunschild, J.
name: Schüler, N.
name: Dornich, K.
name: Rein, S.
Publisher: name: WIP
Year: 2020
Subjects: Silicon Materials and Cells
Characterisation & Simulation of Si Cells

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 317-321
description: Interstitial iron (Fei) is one of the most prominent metallic impurities in crystalline silicon, as it is fast diffusive and highly recombination-active. Its accurate detection is crucial for quality control during solar cell production as iron contamination can significantly limit solar cell efficiency. This work gives a qualitative and quantitative comparison of iron characterization tools including QSSPC (quasi steady state photoconductance), PLI (Photoluminescence Imaging) and MDP (Microwave detected photo conductance). The detection limits, feasibility and accuracy of each tool for iron detection are investigated. In principle, despite of different injection regimes, the absolute iron concentration measured on the different characterising tools is in the same order of magnitude with very good qualitative and quantitative correlation. With the results obtained, the comparison of QSSPC, PLI and MDP showed a mean deviation of 20%.
Statistische Mitteilungen des Kantons Zürich. Neue Folge, Band 1
Creators: name: (:Unkn) Unknown
Publisher: name: Zentralbibliothek Zürich
Year: 1939
Subjects: subject: 314 Allgemeine Statistiken zu Europa
subject: 330 Wirtschaft
subject: 336 Öffentliche Finanzen
subject: Kanton Zürich
subject: Amtliche Statistik
subject: Gemeindefinanzwirtschaft
subject: Finanzstatistik
subject: Wirtschaftsstatistik
subject: Landwirtschaftsstatistik
subject: Steuerstatistik
subject: Bevölkerungsstatistik
subject: Sozialstatistik

description: Inhalt: Heft 1 - Zum Geleit ; Statistik der zürcherischen Gemeindefinanzen 1936 ; Kosten der Lebenshaltung ; Handänderung von Liegenschaften 1926-1935 ; Die landwirtschaftliche Bodenbenutzung 1934 ; Die zürcherische Weinernte 1937. Heft 2 - Über die Unterschiede der Gemeindesteuerbelastung im Kanton Zürich ; Die Gemeindesteuerverhältnisse im Kanton Zürich (Ausgabe 1938). Heft 3 - Erhebungen über die landwirtschaftliche Verschuldung im Kanton Zürich 1934-1936 ; Wohnbautätigkeit im Kanton Zürich 1921-1937 ; Vier Haushaltungsrechnungen von Arbeitslosen 1936/37. Heft 4 - Mietpreise in Stadt und Land (Wohnverhältnisse und Mietpreise 1930, Mietpreisentwicklung 1930-1938) ; Bevölkerungsbewegung im Kanton Zürich bis 1937 ; Staats- und Gemeindeausgaben für Armenfürsorge im Kanton Zürich 1930-1938. Heft 5 - Entwicklung des Einkommens 1920-1936 im Kanton Zürich ; Die Gemeindefinanzen im Jahre 1937. Heft 6 - Erhebungen über Haushaltungsrechnungen im Kanton Zürich 1936/1937 ; Weinernte und Weinabsatz 1938. Heft 7 - Die Gemeindesteuerverhältnisse im Kanton Zürich (Ausgabe 1939).
Active versus passive transformations in the presence of a magnetic field
Creators: name: del Castillo, G. F. Torres
name: Rosete-Álvarez, D. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is shown that, when there is a magnetic field present, in the framework of classical or quantum mechanics, the active translations differ from the passive ones and that the canonical momentum is not the generator of them. It is also shown that an infinitesimal generator of passive translations or rotations exists only if the magnetic field is invariant under these transformations.
Die heutige Entwicklung der Theologie der Ehe in den Kirchen der anglikanischen Gemeinschaft
Creators: name: Dunstan, Gordon
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 6 Nr. 5 (1970): Concilium: Internationale Zeitschrift für Theologie, Band 6, Heft 5
Wavelet analysis on symbolic sequences and two-fold de Bruijn sequences
Creators: name: Osipov, Vladimir Al.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: Combinatorics (math.CO)
subject: Chaotic Dynamics (nlin.CD)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: FOS: Biological sciences
subject: 37F20, 05C10, 92D20

description: The concept of symbolic sequences play important role in study of complex systems. In the work we are interested in ultrametric structure of the set of cyclic sequences naturally arising in theory of dynamical systems. Aimed at construction of analytic and numerical methods for investigation of clusters we introduce operator language on the space of symbolic sequences and propose an approach based on wavelet analysis for study of the cluster hierarchy. The analytic power of the approach is demonstrated by derivation of a formula for counting of {\it two-fold de Bruijn sequences}, the extension of the notion of de Bruijn sequences. Possible advantages of the developed description is also discussed in context of applied p
Acceleration of Compact Radio Jets on Sub-parsec Scales
Creators: name: Lee, Sang-Sung
name: Lobanov, Andrei P.
name: Krichbaum, Thomas P.
name: Zensus, J. Anton
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Jets of compact radio sources are highly relativistic and Doppler boosted, making studies of their intrinsic properties difficult. Observed brightness temperatures can be used to study the intrinsic physical properties of the relativistic jets, and constrain models of jet formation in the inner jet region. We aim to observationally test such inner jet models. The very long baseline interferometry (VLBI) cores of compact radio sources are optically thick at a given frequency. The distance of the core from the central engine is inversely proportional to the frequency. Under the equipartition condition between the magnetic field energy and particle energy densities, the absolute distance of the VLBI core can be predicted. We compiled the brightness temperatures of VLBI cores at various radio frequencies of 2, 8, 15, and 86~GHz. We derive the brightness temperature on sub-parsec scales in the rest frame of the compact radio sources. We find that the brightness temperature increases with increasing distance from the central engine, indicating that the intrinsic jet speed (the Lorentz-factor) increases along the jet. This implies that the jets are accelerated in the (sub-)parsec regions from the central engine.
description: 14 pages, 3 figures, 2 tables, accepted for publication in ApJ
Accelerating Wave Function Convergence in Interactive Quantum Chemical Reactivity Studies
Creators: name: Mühlbach, Adrian H.
name: Vaucher, Alain C.
name: Reiher, Markus
Publisher: name: arXiv
Year: 2015
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The inherently high computational cost of iterative self-consistent-field (SCF) methods proves to be a critical issue delaying visual and haptic feedback in real-time quantum chemistry. In this work, we introduce two schemes for SCF acceleration. They provide a guess for the initial density matrix of the SCF procedure generated by extrapolation techniques. SCF optimizations then converge in fewer iterations, which decreases the execution time of the SCF optimization procedure. To benchmark the proposed propagation schemes, we developed a test bed for performing quantum chemical calculations on sequences of molecular structures mimicking real-time quantum chemical explorations. Explorations of a set of six model reactions employing the semi-empirical methods PM6 and DFTB3 in this testing environment showed that the proposed propagation schemes achieved speedups of up to thirty percent as a consequence of a reduced number of SCF iterations.
description: 9 pages + supporting information (8 pages), 4 figures, 5 tables
A model for particle production in nuclear reactions at intermediate energies: application to C-C collisions at 95 MeV/nucleon
Creators: name: Dudouet, Jérémie
name: Durand, Dominique
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A model describing nuclear collisions at intermediate energies is presented and the results are compared with recently measured double differential cross sections in C-C reactions at 95 MeV/nucleon. Results show the key role played by geometrical effects and the memory of the entrance channel, in particular the momentum distributions of the two incoming nuclei. Special attention is paid to the description of processes occurring at mid-rapidity. To this end, a random particle production mechanism by means of a coalescence process in velocity space is considered in the overlap region of the two interacting nuclei.
description: 18 pages, 7 figures
Spectral Multi-Scale Characterization to Assess the Impact of Metallization Bleeding
Creators: name: Großer, S.
name: Luka, T.
name: Pöplau, C.
name: Eiternick, S.
name: Richter, S.
name: Turek, M.
Publisher: name: WIP
Year: 2020
Subjects: Silicon Materials and Cells
Characterisation & Simulation of Si Cells

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 305-307
description: Fine-line printing for metallic contact structures with high aspect ratios are preferred for modern solar cell metallization. The bleeding phenomenon of screen-printed pastes during the metallization can result in an impact on the solar cell performance by shading. In this work, we present an approach for the characterization of the bleeding of organic components of screen-printed metallization structures to assess the impact on the cell performance. Optical and hyperspectral imaging (HSI) have been applied for a fast assessment (affected area) and classification of organic bleeding. Microscopic structure revealed a local coverage of organics in pyramid valleys forming an effective optical layer. We show, that employing commercially available LBIC tools with measurement options for several wavelengths and spatial resolution of about 100 μm can be used for a quantitative current loss estimation. It was found that an EQE loss takes place at wavelength in the visual spectral range. Our multi-scale approach allows a deeper understanding of present organic bleeding and estimated the current loss to 0.2 %. However, narrow bleeding regions are challenging to measure and require a significantly higher spatial resolution which have been reached with a microscopic LBIC system.
Geometrothermodynamics of black holes in Lorentz non-invariant massive gravity
Creators: name: Sanchez, Alberto
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We analyze a static and spherically symmetric hairy black hole solution in non-invariant massive gravity. The formalism of geometrothermodynamics is used to describe the thermodynamic characteristics of this black hole in a Legendre invariant way. For a black hole in massive gravity, the geometry of the space of equilibrium states is computed showing that it contains information about the thermodynamic interaction, critical points and phase transitions structure.
description: 16 latex pages, 8 figures
EL and LBIC Characterization of Cut Edge Recombination in IBC Solar Cells
Creators: name: Bokalic, M.
name: Kikelj, M.
name: Brecl, K.
name: Jankovec, M.
name: Buchholz, F.
name: Mihailetchi, V.
name: Topic, M.
Publisher: name: WIP
Year: 2020
Subjects: Silicon Materials and Cells
Characterisation & Simulation of Si Cells

description: 37th European Photovoltaic Solar Energy Conference and Exhibition; 308-311
description: The interconnection of cut cells is a way to improve cell to module efficiency ratio. While this approach minimizes series resistance losses and improves module area utilization, it introduces recombination losses due to imperfect cuts. We propose two additional methods to characterize edge recombination based on multi-wavelength light beam induced current (LBIC) measurements and current-dependent spatially resolved electroluminescence (EL). We test the methods on interdigitated back contact silicon solar cells, which were cut in our laboratory using a not yet optimized procedure with laser ablation and mechanical cleaving. The proposed LBIC based measurement offers an easy interpretation as its result can be directly linked to the local external quantum efficiency, while the proposed EL method can be used as an alternative to the established PL methods without the need of a light source. The results show a clear distinction between cut and uncut edges, which was observed with both methods. The influence of edge recombination is still evident 2 mm away from the cell edge in the EL measurements, and 1 mm and 0.5 mm in the LBIC measurements at 1060 and 642 nm, respectively. For the uncut edge the influence is smaller. Based on the LBIC measurements, the EQE loss at the cut edge is estimated to be 9% for a 1 mm and 0.5 mm wide area along the edge for 1060 and 642 nm, respectively. We also observed a non-intuitive EL behaviour, since the EL signal obtained with high current bias decreases faster towards the edge than the EL signal obtained with low bias current. Similarly, a difference between normalized LBIC profiles is observed at different wavelengths. For the uncut edge, the LBIC signal has a slightly steeper response at 1060 nm than at 642 nm.
BOOK REVIEW HBR's 10 must reads 2020: the definitive management ideas of the year from Harvard Business Review. The editors of Harvard Business Review Press. United State of America: Harvard Business Review Press, 2020. 196 pp. ISBN 9781633698123 (pbk).
Creators: name: Vasu Keerativutisest
Publisher: name: Stamford International University Thailand
Year: 2020
Subjects: Management Ideas
Urbanization

description: ASEAN Journal of Management & Innovation, 7, 1, 154 - 157