cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Modeling and simulation of flexible tethered wings for airborne wind energy
Creators: name: Pinheiro, Olaf Palmer Val
Publisher: name: Zenodo
Year: 2022
Subjects: Airborne Wind Energy

description: Airborne Wind Energy (AWE) is a growing field of research that aims to develop solutions for the production of electrical energy from wind energy using air vehicles. The main advantage of this concept is the ability to explore high-altitude winds, which are typically stronger and less variable than low-altitude winds. Furthermore, air vehicles tend to require only a fraction of the infrastructure costs when compared to traditional wind turbines. In the current literature on AWE, many modeling strategies for the dynamics of "tethered" wings are proposed. Among the AWE concepts, the so-called "pumping kite'' is considered one of the simplest, lightest and lowest cost solutions. The typical set consists of a winch on the ground, coupled to an electrical generator and a wing or "kite" that performs maneuvers with the intention of maximizing the generated power by controlling the pulling force or the cable unwinding speed. Important works have explored the typical ground-generation AWE system with flexible Leading Edge Inflatable (LEI) wings, adopting a variety of combinations of wing structural, aerodynamic and cable models. On the other hand, flexible aircraft studies have been a well-established research topic. As LEI wings are generally very flexible structures and given that this approach is still unexplored in the AWE literature, an opportunity arises to apply this same methodology to AWE systems. This dissertation presents an overview of the modeling strategies related to both rigid tethered aircraft, analyzing the Makani company's M600 model, and flexible, through a case study project called GLEIK (Generic Leading Edge Inflatable Kite). The results of the analysis of Makani's M600 model reveal some aspects of the effect of the cable constraint on the longitudinal stability of the aircraft. For the GLEIK model, the simulations demonstrated the effect of flexibility on the wing control mechanism, through the participation of the vibration modes in terms of modal amplitudes. The model was also able to represent the energy generation in the complete system.
description: Original Master Thesis by Olaf Pinheiro first published on the address: http://www.bdita.bibl.ita.br/tesesdigitais/lista_resumo.php?num_tese=78788
Factors Affecting the Performance of Different Thin-Film PV Technologies and Their Impact on the Energy Yield
Creators: name: Schweiger, M.
name: Jahn, U.
name: Herrmann, W.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
PV Modules

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3640-3645
description: This paper reports the results of high-precision energy yield measurements of different PV module
technologies performed at the headquarters of TÜV Rheinland, Cologne, from May 2010 through April 2011. The
investigations refer to 12 specimens each subjected to a separate electronic load for automated MPP tracking and V/Icurve
measurements. Modules based on CdTe, CI(G)S, a-Si, a-Si/μ-Si, a-Si/a-Si and c-Si (mono and poly)
semiconductors were analyzed and compared in a ranking with regard to the achieved specific energy yield. We
consider the individual reasons for differences in performance, such as low irradiance behaviour, temperature
coefficients, spectral irradiance effects and meta-instabilities of nominal power output, and describe the challenges in
gathering high resolution measurement data.
Tagging and Marking Techniques in Fisheries Management
Creators: name: Amit Singh Kshatri1, Lavkush2, Shailendra Kumar3, Amisha Kumari4, Puneet Kumar Patel2*
Publisher: name: the fish world a monthly  magazine
Year: 2025

description: Fish tagging and marking are vital tools in fisheries research, allowing scientists to explore the fascinating world of fish biology and ecology. By attaching unique identifiers—like physical tags, electronic transmitters, or chemical markers—to individual fish, researchers can track their movements, habitat preferences, and migration patterns. This process not only helps in understanding population sizes and growth rates but also sheds light on the factors affecting fish mortality, whether natural or human induced. There are three main types of tagging methods: biological tagging uses natural traits such as parasites or genetic markers for identification; chemical tagging employs substances that leave identifiable markers in fish tissues; and physical tagging involves attaching visible tags to fish. Each method has its own strengths: biological tagging is cost-effective and non-invasive, chemical tagging provides detailed ecological insights, and physical tagging allows for real-time monitoring. The applications of these techniques are broad and impactful. They enable researchers to estimate fish populations, study migration routes, monitor growth rates, and analyze behaviors. Additionally, tagging plays a crucial role in understanding how fish respond to environmental changes and assessing the pressures from fishing activities. As technology continues to evolve, innovative tagging methods promise to enhance data collection and deepen our understanding of aquatic ecosystems, ultimately supporting sustainable fishing practices and conservation efforts
Semi-Implicit finite-difference methods to study the spin-orbit and coherently coupled spinor Bose-Einstein condensates
Creators: name: Banger, Paramjeet
name: Kaur, Pardeep
name: Gautam, Sandeep
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We develop time-splitting finite difference methods, using implicit Backward-Euler and semi-implicit Crank-Nicolson discretization schemes, to study the spin-orbit coupled spinor Bose Einstein condensates with coherent coupling in quasi-one and quasi-two-dimensional traps. The split equations involving kinetic energy and spin-orbit coupling operators are solved using either time-implicit Backward-Euler or semi-implicit Crank-Nicolson methods. We explicitly develop the method for pseudospin-1/2, spin-1, and spin-2 condensates. The results for ground states obtained with time-splitting Backward-Euler and Crank-Nicolson methods are in excellent agreement with time-splitting Fourier spectral method which is one of the popular methods to solve the mean-field models for spin-orbit coupled spinor condensates. We confirm the emergence of different phases in spin-orbit coupled pseudospin-1/2, spin-1, and spin-2 condensates with coherent coupling.
Network Inoculation: Heteroclinics and phase transitions in an epidemic model
Creators: name: Yang, Hui
name: Rogers, Tim
name: Gross, Thilo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: In epidemiological modelling, dynamics on networks, and in particular adaptive and heterogeneous networks have recently received much interest. Here we present a detailed analysis of a previously proposed model that combines heterogeneity in the individuals with adaptive rewiring of the network structure in response to a disease. We show that in this model qualitative changes in the dynamics occur in two phase transitions. In a macroscopic description one of these corresponds to a local bifurcation whereas the other one corresponds to a non-local heteroclinic bifurcation. This model thus provides a rare example of a system where a phase transition is caused by a non-local bifurcation, while both micro- and macro-level dynamics are accessible to mathematical analysis. The bifurcation points mark the onset of a behaviour that we call network inoculation. In the respective parameter region exposure of the system to a pathogen will lead to an outbreak that collapses, but leaves the network in a configuration where the disease cannot reinvade, despite every agent returning to the susceptible class. We argue that this behaviour and the associated phase transitions can be expected to occur in a wide class of models of sufficient complexity.
description: 26 pages, 11 figures
Infrared Continuum and Line Evolution of the Equatorial Ring around SN 1987A
Creators: name: Arendt, Richard G.
name: Dwek, Eli
name: Bouchet, Patrice
name: Danziger, I. John
name: Frank, Kari A.
name: Gehrz, Robert D.
name: Park, Sangwook
name: Woodward, Charles E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Spitzer observations of SN 1987A have now spanned more than a decade. Since day ~4,000, mid-infrared (mid-IR) emission has been dominated by that from shock-heated dust in the equatorial ring (ER). From 6,000 to 8,000 days after the explosion, Spitzer observations included broadband photometry at 3.6 - 24 micron, and low and moderate resolution spectroscopy at 5 - 35 micron. Here we present later Spitzer observations, through day 10,377, which include only the broadband measurements at 3.6 and 4.5 micron. These data show that the 3.6 and 4.5 micron brightness has clearly begun to fade after day ~8,500, and no longer tracks the X-ray emission as well as it did at earlier epochs. This can be explained by the destruction of the dust in the ER on time scales shorter than the cooling time for the shocked gas. We find that the evolution of the late time IR emission is also similar to the now fading optical emission. We provide the complete record of the IR emission lines, as seen by Spitzer prior to day 8,000. The past evolution of the gas as seen by the IR emission lines seems largely consistent with the optical emission, although the IR [Fe II] and [Si II] lines show different, peculiar velocity structures.
description: Accepted for publication in AJ. 22 pages, 18 figures
Evaluation of Performance of Standard and Umg Multicrystalline Silicon Modules in Outdoor Conditions
Creators: name: Sánchez, E.
name: Torreblanca, J.
name: Guerrero, I.
name: Carballo, T.
name: Parra García, V.
name: Ordás Badia, R.
name: Bullon Camarasa, J.
name: Hoffmann, V.
name: Gutiérrez, J.
name: Ponce-Alcántara, S.
name: Boillos, E.
name: Rozas, L.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
PV Modules

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3657-3660
description: At present time solar cells made of silicon based on upgraded metallurgical routes (umg-Si) are entering the photovoltaic market and becoming a real option to the standard polysilicon-based (mc-Si) devices. While a lot of research at wafer and cell level has been carried out so far, there is little experience in real operation conditions of PV modules based-on umg-Si feedstock and only a few studies have been published. In this work a comparative study between typical polysilicon and umg-Si based modules, manufactured following exactly the same wafer-to-module procedures and evaluated in outdoor conditions, is presented. The results after one full year of exposition to outdoor conditions show a very similar behavior that leads to a very close energy production for both types of modules. With a lower cost and similar performance, modules made from umg silicon feedstock a ra more economic option and could play an important role in the photovoltaic market.
Constraining the efficiency of cosmic ray acceleration by cluster shocks
Creators: name: Vazza, F.
name: Brueggen, M.
name: Wittor, D.
name: Gheller, C.
name: Eckert, D.
name: Stubbe, M.
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: We study the acceleration of cosmic rays by collisionless structure formation shocks with ENZO grid simulations. Data from the FERMI satellite enable the use of galaxy clusters as a testbed for particle acceleration models. Based on advanced cosmological simulations that include different prescriptions for gas and cosmic rays physics, we use the predicted γ-ray emission to constrain the shock acceleration efficiency. We infer that the efficiency must be on average <0.1% for cosmic shocks, particularly for the 2
description: 15 pages, 14 figures. MNRAS, accepted
SIFT Matching by Context Exposed
Creators: name: Bellavia, Fabio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This paper investigates how to step up local image descriptor matching by exploiting matching context information. Two main contexts are identified, originated respectively from the descriptor space and from the keypoint space. The former is generally used to design the actual matching strategy while the latter to filter matches according to the local spatial consistency. On this basis, a new matching strategy and a novel local spatial filter, named respectively blob matching and Delaunay Triangulation Matching (DTM) are devised. Blob matching provides a general matching framework by merging together several strategies, including rank-based pre-filtering as well as many-to-many and symmetric matching, enabling to achieve a global improvement upon each individual strategy. DTM alternates between Delaunay triangulation contractions and expansions to figure out and adjust keypoint neighborhood consistency. Experimental evaluation shows that DTM is comparable or better than the state-of-the-art in terms of matching accuracy and robustness. Evaluation is carried out according to a new benchmark devised for analyzing the matching pipeline in terms of correct correspondences on both planar and non-planar scenes, including several state-of-the-art methods as well as the common SIFT matching approach for reference. This evaluation can be of assistance for future research in this field.
description: Accepted by IEEE Transactions on Pattern Analysis and Machine Intelligence (TPAMI), March 2022. Project page: https://sites.google.com/view/fbellavia/research/blob_dtm
Grid Based Nonlinear Filtering Revisited: Recursive Estimation & Asymptotic Optimality
Creators: name: Kalogerias, Dionysios S.
name: Petropulu, Athina P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistics Theory (math.ST)
subject: Information Theory (cs.IT)
subject: Optimization and Control (math.OC)
subject: Methodology (stat.ME)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We revisit the development of grid based recursive approximate filtering of general Markov processes in discrete time, partially observed in conditionally Gaussian noise. The grid based filters considered rely on two types of state quantization: The \textit{Markovian} type and the \textit{marginal} type. We propose a set of novel, relaxed sufficient conditions, ensuring strong and fully characterized pathwise convergence of these filters to the respective MMSE state estimator. In particular, for marginal state quantizations, we introduce the notion of \textit{conditional regularity of stochastic kernels}, which, to the best of our knowledge, constitutes the most relaxed condition proposed, under which asymptotic optimality of the respective grid based filters is guaranteed. Further, we extend our convergence results, including filtering of bounded and continuous functionals of the state, as well as recursive approximate state prediction. For both Markovian and marginal quantizations, the whole development of the respective grid based filters relies more on linear-algebraic techniques and less on measure theoretic arguments, making the presentation considerably shorter and technically simpler.
description: 38 pages. To appear in the IEEE Transactions on Signal Processing
Degradation Analysis of Different PV Modules After Prolonged Field Operation
Creators: name: Sastry, O.S.
name: Chandel, R.
name: Singh, R.K.
name: Dash, P.K.
name: Kumar, R.
name: Bandyopadhyay, B.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
PV Modules

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3495-3499
description: The quality of a photovoltaic module is determined by the manufacturing process and the quality policy of the
manufacturer, which is generally tested and evaluated as per international standards issued by various organizations like the
IEC. These tests are commonly referred to as design qualification and type-approval tests, and are designed to assess the PV
module’s reliability and quality on the basis of standardized criteria under conditions known to have contributed to common
degradation mechanisms. However, these tests are not sufficient for estimating the module lifetime as it has been observed
that even the qualified modules have failed or degraded more than expected, in field conditions[1]. Hence, it is critical to
study the phenomenon of degradation in order to assess the module’s performance in the actual operating environment and
for creation of better module designs. In this paper we present the findings and our analysis of the single-crystalline and
thin-film modules of five different commercial designs produced by ten manufacturers. These modules were deployed for
about 10 years in the test beds at the Solar Energy Centre(SEC), Gurgaon, India. It has been observed from experimental
results that modules employing Cadmium Telluride (CdTe) and mono-crystalline technologies are more resilient to
degradation than the amorphous-silicon modules with average degradation of 18.23% and 12.25% respectively, whereas for
amorphous silicon double junction modules showed degradation of 27.24%.For the triple junction and CIS modules,
observed degradation is in the range of 35% and 36% from their initial values respectively.
Influence of Air Mass, DNI and Air Temperature in CPV Modules: Study of Different Technologies
Creators: name: Fernández, E.F.
name: Pérez-Higueras, P.
name: Fernández, J.I.
name: Almonacid, F.
name: Rodrigo, P.M.
name: García Loureiro, A.J.
name: Hontoria, L.
name: Gómez Vidal, P.G.
name: Almonacid, G.
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; 644-646
description: Concentrator photovoltaic CPV modules under real conditions from different manufactures have been
measured in a new research centre at Jaen, Spain. Influence in maximum power point Pmax of irradiance levels, air
temperature and air mass were under study for six months. Pmax shows a good linear behavior for irradiance levels
from 400 to 1000 w/m2 and air temperature could be considered negligible in first approximation for temperatures
between 20 and 40 ºC. A maximum in Pmax at AM1.5d was found, beyond this point, system losses power per AM
unit.
Global dynamics in a chemotaxis model describing tumor angiogenesis with/without mitosis in any dimensions
Creators: name: Chu, Jiawei
name: Jin, Haiyang
name: Xiang, Tian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35A01, 35B40, 35B44, 35K57

description: In this work, we study the Neumann initial boundary value problem for a three-component chemotaxis model in any dimensional bounded and smooth domains; this model is used to describe the branching of capillary sprouts during angiogenesis. First, we find three qualitatively simple sufficient conditions for qualitative global boundedness, and then, we establish two types of global stability for bounded solutions in qualitative ways. As a consequence of our findings, the underlying system without chemotaxis and the effect of ECs mitosis can not give rise to pattern formations. Our findings quantify and extend significantly previous studies, which are set in lower dimensional convex domains and are with no qualitative information.
description: 43 pages, under review in a journal
Surface (Photo)Voltage Monitoring in Roll-to-Roll Deposition of Thin Film Silicon Solar Cells
Creators: name: Van Aken, B.B.
name: Bakker, K.J.
name: Heijna, M.C.R.
name: Reid, D.
name: Baikie, I.
name: Soppe, W.J.
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; 2739-2742
description: The Kelvin probe is a non-contact, non-destructive vibrating capacitor device that measures the work
function difference between a conducting sample and a vibrating tip. This contribution focuses on inline monitoring
of the surface (photo) voltage of deposited silicon layers. We apply a custom-built in-situ Kelvin probe, operated in a
roll-to-roll PECVD system, located immediately after the plasma zones to enable direct feedback to the controlling
system of the plasma deposition. The surface photovoltage of nip thin film Si solar cells increases with increasing
Voc. The results imply that inline, contactless measurements of the open circuit voltage are possible and that thus
monitoring the doped layer quality during roll-to-roll production is feasible.
Images of multilinear polynomials on $n\times n$ upper triangular matrices over infinite fields
Creators: name: Gargate, Ivan Gonzales
name: de Mello, Thiago Castilho
Publisher: name: arXiv
Year: 2021
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16R10

description: In this paper we prove that the image of multilinear polynomials evaluated on the algebra $UT_n(K)$ of $n\times n$ upper triangular matrices over an infinite field $K$ equals $J^r$, a power of its Jacobson ideal $J=J(UT_n(K))$. In particular, this shows that the analogue of the Lvov-Kaplansky conjecture for $UT_n(K)$ is true, solving a conjecture of Fagundes and de Mello. To prove that fact, we introduce the notion of commutator-degree of a polynomial and characterize the multilinear polynomials of commutator-degree $r$ in terms of its coefficients. It turns out that the image of a multilinear polynomial $f$ on $UT_n(K)$ is $J^r$ if and only if $f$ has commutator degree $r$.
description: To appear in Israel Journal of Mathematics
Characterization and Optimization of Laser Edge Isolation
Creators: name: Gutscher, S.
name: Knorz, A.
name: Gundel, P.
name: Greulich, J.
name: Preu, 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; 2287-2291
description: Laser edge isolation is a well established industrial process to separate the front emitter from the
rear emitter of a silicon solar cell. Since the recombination current at the edge of the laser groove can decrease
the conversion efficiency of the solar cell an improvement of the laser edge isolation is desirable. Recently
developed laser systems with picosecond pulse widths promise less damage to be induced into the silicon.
Especially for the rear side isolation of a Metal-Wrap-Through solar cell an improvement can result in higher
efficiencies. McIntosh proposed a two diode model for a solar cell which has a pn-junction that extends to the
edge of the cell and showed the influence of the recombination current at the edge on the I-U curve as well as on
the efficiency. We used this model to determine the recombination current for two different laser systems and
showed that the recombination current is an adequate measurement to evaluate the quality of the laser edge
isolation. Furthermore we characterized the isolation groove using μ-photoluminescence measurements to
determine lifetimes and mechanical stress near the groove.
Ages of massive galaxies at $0.5 < z < 2.0$ from 3D-HST rest-frame optical spectroscopy
Creators: name: Fumagalli, Mattia
name: Franx, Marijn
name: van Dokkum, Pieter
name: Whitaker, Katherine E.
name: Skelton, Rosalind E.
name: Brammer, Gabriel
name: Nelson, Erica
name: Maseda, Michael
name: Momcheva, Ivelina
name: Kriek, Mariska
name: Labbé, Ivo
name: Lundgren, Britt
name: Rix, Hans-Walter
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present low-resolution near-infrared stacked spectra from the 3D-HST survey up to $z=2.0$ and fit them with commonly used stellar population synthesis models: BC03 (Bruzual & Charlot, 2003), FSPS10 (Flexible Stellar Population Synthesis, Conroy & Gunn 2010), and FSPS-C3K (Conroy, Kurucz, Cargile, Castelli, in prep). The accuracy of the grism redshifts allows the unambiguous detection of many emission and absorption features, and thus a first systematic exploration of the rest-frame optical spectra of galaxies up to $z=2$. We select massive galaxies ($\rm log(M_{*} / M_{\odot}) > 10.8$), we divide them into quiescent and star-forming via a rest-frame color-color technique, and we median-stack the samples in 3 redshift bins between $z=0.5$ and $z=2.0$. We find that stellar population models fit the observations well at wavelengths below $\rm 6500 Å$ rest-frame, but show systematic residuals at redder wavelengths. The FSPS-C3K model generally provides the best fits (evaluated with a $χ^2_{red}$ statistics) for quiescent galaxies, while BC03 performs the best for star-forming galaxies. The stellar ages of quiescent galaxies implied by the models, assuming solar metallicity, vary from 4 Gyr at $z \sim 0.75$ to 1.5 Gyr at $z \sim 1.75$, with an uncertainty of a factor of 2 caused by the unknown metallicity. On average the stellar ages are half the age of the Universe at these redshifts. We show that the inferred evolution of ages of quiescent galaxies is in agreement with fundamental plane measurements, assuming an 8 Gyr age for local galaxies. For star-forming galaxies the inferred ages depend strongly on the stellar population model and the shape of the assumed star-formation history.
description: 13 pages, 15 figures, accepted for publication in ApJ
A Comparative Analysis Between Scan-path and Fixations on Event-Related Potentials
Creators: name: Isiaka, Fatima
name: Sophia, Al Sharji
Publisher: name: International Journal of Artificial Intelligence and Cognitive Psychology
Year: 2023

description: In usability studies, when observation is made on a particular image or objecton visual stimulus online, the perception of the user depends upon preceding expectations,subtle cognitive abilities and user memory. The hypothesis is usuallyset that subtle cognitive processes are in the form of bottom-to-up processing or atop to down processing, and this could be determined through analysis of the fixationpoints on the scan-path made by the eye movement on the screen. Normally,to access the variations on the scan path, user data from eye movement predictionsis analysed using a four-by-four grid pattern which is superimposed on thevisual stimuli to determine the user’s eye fixation dispersal pattern. This is mostlybased on assumption that the visual interface is viewed as a 2-dimensional visualfield (Cartesian plane). As part of the contribution to usability studies, this paperapproaches predictions of fixation and scan path, by determining the Euclideandistance between fixation points, and determining the shortest scan path betweenfixation points using the Dijkstra’s Algorithm for momentous subtle cognitive responseto visual stimuli in form of dynamic contents on webpages and to predictfixation points of eye movement based on constriction and dilation of the pupil response.A comparison was made between the predicted significant subtle cognitiveresponse of the users and the trivial subtle cognitive response of the users fromtheir fixation scan path. The trivial subtle cognitive response possesses the mosthigh performance for all trials on eye movement data and it is set as the reliabledataset to predict eye movement on visual fields with the hypothesis that
Novel Solar Receiver Tester for Medium Concentrated Photovoltaic
Creators: name: Byström, J.
name: Olsson, O.
name: Gaynullin, B.
name: Thungström, G.
name: Tapol, S.
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; 670-675
description: Absolicon, winner of InterSolar thermal category 2011 has Its Concentrated Photovoltaic Thermal, X10-CPVT
system, focuses 10 times of sunlight in its long photovoltaic module trough inside parabolic structure through parabolic
reflector. These photovoltaic modules must be able to withstand the effect of high temperature 200°C through high
concentrations of sun lights, although they are practically cooled through circulation of water for thermal heat. Their life
expectancy is 15-20 years places heavy demands of standardization of its electrical characteristics as well wafers, solar cells,
modules and so on. “Novel Receiver Tester for Medium Concentrator Photovoltaic” fulfils all demands in a low cost way by
illuminating and controlling high concentrations of artificial sun light through halogen lights to the module i.e. series
connection of 17 solar cells. It produces 20 Ampere of Current corresponds to 20 times of solar Concentration in a stable and
almost exact inhomogeneous collimators of light over all the units. It is small and quick enough to be used and fitted in line
in serial production. In Production receiver units, standardization is important and this testing system calculates all electrical
parameters of a solar module. All given parameters are taken to analyse the solar module’s output performance in different
concentrated environments set by Absolicon Researchers for high quality as well reliability of its industrial production.
Thermodynamic properties of modified gravity theories
Creators: name: Bamba, Kazuharu
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review thermodynamic properties of modified gravity theories such as $F(R)$ gravity and $f(T)$ gravity, where $R$ is the scalar curvature and $T$ is the torsion scalar in teleparallelism. In particular, we explore the equivalence between the equations of motion for modified gravity theories and the Clausius relation in thermodynamics. In addition, thermodynamics of the cosmological apparent horizon is investigated in $f(T)$ gravity. We show both equilibrium and non-equilibrium descriptions of thermodynamics. It is demonstrated that the second law of thermodynamics in the universe can be met when the temperature of the outside of the apparent horizon is equivalent to that of the inside of it.
description: 27 pages, no figure, version accepted for publication in International Journal of Geometric Methods in Modern Physics
Comparative Assessment of Different Thin Film Technologies from Outdoor I-V Characteristics
Creators: name: Mohring, H.-D.
name: Stellbogen, D.
name: Geyer, D.
name: Lechner, P.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
PV Modules

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3625-3628
description: The relevant parameters that affect the outdoor energy yield have been specified and quantified for
different PV technologies from experimental I-V characteristics data acquired during long term outdoor tests. The selfreference
approach uses the short circuit current Isc of the module under test as a representation of the irradiance. The
ratio of temperature corrected measured short circuit current to short circuit current at STC determines the effective
irradiance Eeff (unit suns). Application of this method eliminates the spectral, angular and time response mismatch
between the module under test and the irradiance sensor and is equivalent to using a perfectly matched reference device.
The self referencing routine can considerably reduce the uncertainty of parameter evaluation from outdoor
measurements. Characteristic curves describing the variation of module power with the effective irradiance in the module
temperature range from 10 °C to 55 °C are presented for different technologies and it is demonstrated that for differences
in module performance the irradiance level and module temperature effects generally dominate.
Rainbow Turán number of clique subdivisions
Creators: name: Jiang, Tao
name: Methuku, Abhishek
name: Yepremyan, Liana
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We show that for any integer $t\geq 2$, every properly edge-coloured graph on $n$ vertices with more than $n^{1+o(1)}$ edges contains a rainbow subdivision of $K_t$. Note that this bound on the number of edges is sharp up to the $o(1)$ error term. This is a rainbow analogue of some classical results on clique subdivisions and extends some results on rainbow Turán numbers. Our method relies on the framework introduced by Sudakov and Tomon[2020] which we adapt to find robust expanders in the coloured setting.
description: 8 pages, journal version
Magnetic fields in early protostellar disk formation
Creators: name: González-Casanova, Diego F.
name: Santos-Lima, Reinaldo
name: Lazarian, Alexander
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We consider formation of accretion disks from a realistically turbulent molecular gas using 3D MHD simulations. In particular, we analyze the effect of the fast turbulent reconnection described by the Lazarian & Vishniac (1999) model for the removal of magnetic flux from a disk. With our numerical simulations we demonstrate how the fast reconnection enables protostellar disk formation resolving the so-called "magnetic braking catastrophe". In particular, we provide a detailed study of the dynamics of a 0.5 M$_\odot$ protostar and the formation of its disk for up to several thousands years. We measure the evolution of the mass, angular momentum, magnetic field, and turbulence around the star. We consider effects of two processes that strongly affect the magnetic transfer of angular momentum, both of which are based on turbulent reconnection: the first, "reconnection diffusion", removes the magnetic flux from the disk, the other involves the change of the magnetic field's topology, but does not change the absolute value of the magnetic flux through the disk. We demonstrate that for the first mechanism, turbulence causes a magnetic flux transport outward from the inner disk to the ambient medium, thus decreasing the coupling of the disk to the ambient material. A similar effect is achieved through the change of the magnetic field's topology from a split monopole configuration to a dipole configuration. We explore how both mechanisms prevent the catastrophic loss of disk angular momentum and compare both above turbulent reconnection mechanisms with alternative mechanisms from the literature.
description: 12 pages, 12 figures
Effect of Dust Shading on Photovoltaic Modules
Creators: name: Qasem, H.
name: Betts, T.R.
name: Müllejans, H.
name: AlBusairi, H.
name: Gottschalg, R.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
PV Modules

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3652-3656
description: This paper investigates the effect of dust on photovoltaic (PV) modules with respect to dust concentration and spectral transmittance. Dust samples were collected from Kuwait in the form of raw dust and accumulated dust on sample glasses at different tilt angles. The spectral transmittance was measured at the Centre for Renewable Energy Systems Technology (CREST) laboratory with a spectrophotometer. Total transmittance variation was identified for samples at different tilted positions, where the worst case was presented at a tilt angle of 30o with a non uniformity of 4.4% in comparison to 0.2% for the 90o tilt between the top, middle and bottom. Finally the data was translated to an effective spectral response for different technologies using spectral response data measured by the European Solar Test Installation (ESTI). The measured data showed a decrease in transmittance at wavelengths <570 nm. This affects wide band-gap thin-film technologies more than crystalline silicon technologies and especially amorphous silicon which showed a 33% reduction in photocurrent when a dust concentration of 4.25 mg/cm2 was applied. In comparison, the crystalline silicon and CIGS technologies showed 28.6% and 28.5% reductions at the same dust density.
Coexisting charge density wave and ferromagnetic instabilities in monolayer InSe
Creators: name: Stepanov, E. A.
name: Harkov, V.
name: Rösner, M.
name: Lichtenstein, A. I.
name: Katsnelson, M. I.
name: Rudenko, A. N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recently fabricated InSe monolayers exhibit remarkable characteristics that indicate the potential of this material to host a number of many-body phenomena. Here, we consistently describe collective electronic effects in hole-doped InSe monolayers using advanced many-body techniques. To this end, we derive a realistic electronic-structure model from first principles that takes into account the most important characteristics of this material, including a flat band with prominent van Hove singularities in the electronic spectrum, strong electron-phonon coupling, and weakly-screened long-ranged Coulomb interactions. We calculate the temperature-dependent phase diagram as a function of band filling and observe that this system is in a regime with coexisting charge density wave and ferromagnetic instabilities that are driven by strong electronic Coulomb correlations. This regime can be achieved at realistic doping levels and high enough temperatures, and can be verified experimentally. We find that the electron-phonon interaction does not play a crucial role in these effects, effectively suppressing the local Coulomb interaction without changing the qualitative physical picture.
Results of the International PV Module Quality Assurance Forum and the Road Ahead
Creators: name: Sample, T.
name: Kurtz, S.
name: Wohlgemuth, J.
name: Yamamichi, M.
name: Amano, J.
name: Hacke, P.
name: Kempe, M.
name: Kondo, M.
name: Doi, T.
name: Otani, K.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
PV Modules

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3661-3664
description: Currently, no test can quantify a module’s lifetime with confidence, but stress tests are routinely used
to differentiate PV product designs. This paper evaluates the need for quality assurance (QA) standards and outlines a
path for creating these via the International PV Module QA Forum, which was held in San Francisco July 15-16
2011.
The Forum resulted in the formation of five Task Groups to work on the following areas; Task Group 1: PV QA
Guideline for manufacturing consistency; Task Group 2: PV QA Testing for thermal and mechanical fatigue
including vibration; Task Group 3: PV QA Testing for humidity, temperature, and voltage; Task Group 4: PV QA
Testing for diodes, shading and reverse bias; Task Group 5: PV QA Testing for UV, temperature and humidity.
Modelling and Characterization of Passivating Layers for c-Si Concentrator Cells
Creators: name: Daliento, S.
name: Tari, O.
name: Lancellotti, L.
name: Gnanapragasam, S.
name: Bobeico, E.
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; 2268-2271
description: In this paper an improved analysis of the effects of thin film deposition processes, devised to the
fabrication of passivating layers for silicon solar cells, is presented. It is based on a simplified model of the Metal Oxide
Semiconductor structure (MOS), allowing easy interpretation of conductance versus frequency data (G -f), aimed to the
extraction of fundamental parameters like bulk recombination lifetime, generation lifetime and interface defect density.
The reliability of the new model has been tested by means of two-dimensional numerical simulations performed in the
Synopsys S-device environment. Experiments carried out on Rapid Thermal Oxidized silicon samples used for the
fabrication of high efficiency solar cells for concentrator systems are also shown.
Quantum Signature of Chaos and Thermalization in Kicked Dicke Model
Creators: name: Ray, S.
name: Ghosh, A.
name: Sinha, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the quantum dynamics of the kicked Dicke model(KDM) in terms of the Floquet operator and analyze the connection between the chaos and thermalization in this context. The Hamiltonian map is constructed by taking the classical limit of the Heisenberg equation of motion suitably to study the corresponding phase space dynamics which shows a crossover from regular to chaotic motion by tuning the kicking strength. The fixed point analysis and calculation of the Lyapunov exponent(LE) provides us a complete picture of the onset of chaos in phase space dynamics. We carry out the spectral analysis of the Floquet operator which include the calculation of quasienergy spacing distribution, structural entropy and show the correspondence to the random matrix theory in the chaotic regime. Finally, we analyze the thermodynamics and statistical properties of the bosonic sector as well as the spin sector and discuss how such periodically kicked system relaxes to a thermalized state in accordance with the laws of statistical mechanics. We introduce the notion of an effective temperature and show that a microcanonical picture is emerging out in the thermodynamic limit indicating the thermalization occurring in such system.
description: 10 pages, 10 figures
PRENATAL STRESS, ANXIETY AND ALCOHOL EXPOSURE ON COGNITIVE DEVELOPMENT
Creators: name: Delagneau, Garance
Publisher: name: Monash University
Year: 2023
Subjects: Paediatrics not elsewhere classified
Cognition

description: Prenatal exposure to teratogens constitutes one of the most preventable causes of cognitive deficits in children, highlighting the importance of identifying such agents to optimise children’s development. The relationship between maternal prenatal stress and/or anxiety, low-moderate alcohol exposure and children’s development, however, remained unclear. This meta-analysis and prospective longitudinal cohort study suggest that these agents are not associated with widespread cognitive impairments in children. Uncertainty remains around the effects of these teratogens on children’s broader development, suggesting that abstinence from alcohol during pregnancy remains the safest option and that pregnant women experiencing stress and/or anxiety should have access to support.
Plasma Texturing of Thin Film Solar Cells
Creators: name: Keller, M.
name: Janz, S.
name: Reber, S.
name: Lindekugel, S.
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; 2299-2303
description: A potentially inexpensive way to texture silicon surfaces especially for crystalline silicon thin-film solar
cells is the plasma texturing method. This method uses the principle of self-masking and is realised at Fraunhofer ISE
using an isotropic and an anisotropic power supply. Even in continuous in-line processing, the process allows a
conditioning of the wafer surface in a wide range. In this paper two scientific problems are addressed: first, simulations
were performed to find the best texture geometry for a multi crystalline thin film solar cell and second, experimental
work was done to develop the exact parameter set for the self masking plasma etching. By this work, we were able to
identify good processes for powerful textures.
Platonic Entanglement
Creators: name: Latorre, José I.
name: Sierra, Germán
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a construction of highly entangled states defined on the topology of a platonic solid using tensor networks based on ancillary Absolute Maximally Entangled (AME) states. We illustrate the idea using the example of a quantum state based on AME(5,2) over a dodecahedron. We analyze the entropy of such states on many different partitions, and observe that they come on integer numbers and are almost maximal. We also observe that all platonic solids accept the construction of AME states based on Reed-Solomon codes since their number of facets, vertices and edges are always a prime number plus one.
description: 6 pages, 3 figures
Metamorphoses in Skin Conductance Response and Pupillary Constriction Based on Gender Stratification
Creators: name: Isiaka, Fatima
name: Zainab, Adamu
Publisher: name: International Journal Computer Studies and Advancement in Current Research
Year: 2023

description: In the traditional sense, Skin Conductance Response (SCR) can beanalysed as a leading indicator of the sympathetic nervous activationthat involves stress which is experienced by most computer users. Recentresearch has found that the Pupil response can also be controlledby the body system known as the Automatic nervous system (ANS) asanother important indicator of the sympatric activation of the bodyresponse. This paper tries to investigate the techniques for analysingthe pupil response readings and the Electro-dermal activity to predictthe metamorphoses in synch to the user interaction. The data used isbased on a predefined experiment where sixty different young groups ofparticipants interacted with webpage content and their pupil responseand EDA was collected synchronously with their interactions with webcontents. The result shows that EDA has the highest conductance effecton their affective state than the pupil response and the response stateis a static course at latency.