cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Where Have My Watts Gone? - Five Years of Utility Scale PV Power Plant Monitoring
Creators: name: Carretero, A.
name: Hoffmann, H.
Publisher: name: WIP
Year: 2013
Subjects: PV SYSTEMS
PV System Reliability and Availability

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 4045-4050
description: To minimize yield losses, utility scale PV power plants are usually equipped with string monitoring
systems. These allow fine control of the plant’s correct operation and monitoring of its availability. While the
identification of total string failures is easy, detecting the cumulative effect of small performance variations or
degradation at a string or substring level turns out to be challenging. A method for calculating the module degradation
is proposed. It is based on high accurate string current and voltage measurements, together with string power
simulations under measured weather conditions, and taking into account the aging of the irradiance sensor. This
method distinguishes between persistent degradation and temporary effects of shading or other aberrations, so that the
final results can be compared with the module manufacturer’s power warranty statement, or used to determine the
plant’s peak power or to predict its energy yield more accurately.
Growth and characterization of CaFe$_{1-x}$Co$_x$AsF single crystals by CaAs flux method
Creators: name: Ma, Yonghui
name: Hu, Kangkang
name: Ji, Qiucheng
name: Gao, Bo
name: Zhang, Hui
name: Mu, Gang
name: Huang, Fuqiang
name: Xie, Xiaoming
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Millimeter sized single crystals of CaFe$_{1-x}$Co$_x$AsF were grown using a self-flux method. It is found that high-quality single crystals can be grown from three approaches with different initial raw materials. The chemical compositions and crystal structure were characterized carefully. The c-axis lattice constant is suppressed by the Co substitution. Superconductivity with the critical transition $T_c$ as high as 21 K was confirmed by both the resistivity and magnetic susceptibility measurements in the sample with $x$ = 0.12. Moreover, it is found that $T_c$ can be enhanced for about 1 K under the very small hydrostatic pressure of 0.22 GPa, which is more quickly than that reported in the polycrystalline samples. Our results is a promotion for the physical investigations of 1111 phase iron-pnictide superconductors.
description: 11 pages, 4 figures, submitted to Journal of Crystal Growth
Maximum Power Point Tracking Algorithm for PV Arrays under Partially Shaded Conditions
Creators: name: Ayvazyan, K.G.
Publisher: name: WIP
Year: 2013
Subjects: PV SYSTEMS
PV System and Grid Integration Aspects

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 4060-4062
description: V-I and V-P characteristics of partially shaded photovoltaic (PV) array are experimentally investigated.
It is shown that they have two and more local maximum power points (MPP). Several MPP tracking methods have
been proposed to deal with this problem. However, none of them were able to effectively identify the occurrence of
partial shading. A simple MPP tracking algorithm has been proposed, which is capable of identifying the occurrence
of partial shading hence determining the need for a global scan over the operation range of PV array for the global
MPP.
Plasmonic Particles Arrays on Large Areas for Photon Management
Creators: name: Jüchter, S.
name: Meisenheimer, S.-K.
name: Hauser, H.
name: Wellens, C.
name: Höhn, O.
name: Kübler, V.
name: Fix, T.
name: Schwarz, U.T.
name: Bläsi, B.
Publisher: name: WIP
Year: 2013
Subjects: MATERIAL STUDIES, NEW CONCEPTS, ULTRA-HIGH EFFICIENCY AND SPACE TECHNOLOGY
New Materials and Concepts for Cells

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 170-175
description: In photovoltaic research, two major optimization directions have emerged: the realization of thinner cells
while simultaneously reaching higher efficiencies. Therefore, photon management approaches become more and more
important. A promising light trapping approach is the use of metallic nanoparticles revealing plasmonic effects. In
plasmonics advantage is taken of scattering and the field enhancement around the nanostructure. This leads to an
enhancement of the path lengths of light inside the solar cell, resulting in an enhanced absorption probability.
We present a fabrication process, applicable to large areas, to realize arrays of uniform, defined metallic nanoparticles
using interference lithography, nanoimprint lithography and a lift-off process. The obtained nanoparticles are
characterized with Fourier spectrometer measurements. The experimental results are then compared to Mie and rigorous
coupled wave analysis simulations.
First-order superfluid to Mott-insulator phase transitions in spinor condensates
Creators: name: Jiang, J.
name: Zhao, L.
name: Wang, S. -T.
name: Chen, Z.
name: Tang, T.
name: Duan, L. -M.
name: Liu, Y.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We observe evidence of first-order superfluid to Mott-insulator quantum phase transitions in a lattice-confined antiferromagnetic spinor Bose-Einstein condensate. The observed signatures include hysteresis effect and significant heatings across the phase transitions. The nature of the phase transitions is found to strongly depend on the ratio of the quadratic Zeeman energy to the spin-dependent interaction. Our observations are qualitatively understood by the mean field theory, and in addition suggest tuning the quadratic Zeeman energy is a new approach to realize superfluid to Mott-insulator phase transitions.
Power Supply Subsystem for Small Satellite Application
Creators: name: El-Gohary, N.
name: El-Shater, T.
name: Sakr, M.M.
name: Mahfouz, A.A.
Publisher: name: WIP
Year: 2013
Subjects: PV SYSTEMS
PV System Reliability and Availability

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 4036-4040
description: Space mission analysis and design begins with one or more broad objectives and constraints and then
proceeds to define a space system that will meet them at the lowest possible cost. The satellite mission under study is
imaging the Egyptian land or any other places on earth and sending these images to the data receiving station. Satellite
power supply system has the responsibility of providing continuous, regulated and conditioned power to payloads
(multiband earth imager and middle infrared earth imager camera) and other subsystems during all mission phases.
Satellite primary source of power depends upon the space mission duration. The duration of remote sensing satellite
mission is from five to seven years. Increasing the satellite lifetime from five years to fifteen years will reduce satellite
designing and launching costs. So a high efficiency and long lifetime satellite power supply subsystem using a tipplejunction
solar cell of 29.5% efficiency controlled by maximum power point tracking and FWESS as a secondary power
source. This system is compared to another one used in the Egyptian satellite EgyptSat-1 using direct energy transfer
(DET) technique, shunt regulator , and CB as a secondary power source.
Temporal structure of attosecond pulses from laser-driven coherent synchrotron emission
Creators: name: Cousens, S.
name: Reville, B.
name: Dromey, B.
name: Zepf, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The microscopic dynamics of laser-driven coherent synchrotron emission transmitted through thin foils are investigated using particle-in-cell simulations. For normal incidence interactions, we identify the formation of two distinct electron nanobunches from which emission takes place each half-cycle of the driving laser pulse. These emissions are separated temporally by 130 attoseconds and are dominant in different frequency ranges, which is a direct consequence of the distinct characteristics of each electron nanobunch. This may be exploited through spectral filtering to isolate these emissions, generating electromagnetic pulses of duration ~70 as.
Dynamic Analysis of Bet-Hedging Strategies as a Protection Mechanism against Environmental Fluctuations
Creators: name: Ogura, Masaki
name: Wakaiki, Masashi
name: Preciado, Victor M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Dynamical Systems (math.DS)
subject: FOS: Biological sciences
subject: FOS: Mathematics

description: In order to increase their robustness against environmental fluctuations, many biological populations have developed bet-hedging mechanisms in which the population `bets' against the presence of prolonged favorable environmental conditions by having a few individual behaving as if they sensed a threatening or stressful environment. As a result, the population (as a whole) increases its chances of surviving environmental fluctuations in the long term, while sacrificing short-term performance. In this paper, we propose a theoretical framework, based on Markov jump linear systems, to model and evaluate the performance of bet-hedging strategies in the presence of stochastic fluctuations. We illustrate our results using numerical simulations.
Which tone-mapping operator is the best? A comparative study of perceptual quality
Creators: name: Cerdá-Company, Xim
name: Párraga, C. Alejandro
name: Otazu, Xavier
Publisher: name: arXiv
Year: 2016
Subjects: subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences
subject: I.3.3; I.4.0; H.1.2
subject: 68U10

description: Tone-mapping operators (TMO) are designed to generate perceptually similar low-dynamic range images from high-dynamic range ones. We studied the performance of fifteen TMOs in two psychophysical experiments where observers compared the digitally generated tone-mapped images to their corresponding physical scenes. All experiments were performed in a controlled environment and the setups were designed to emphasise different image properties: in the first experiment we evaluated the local relationships among intensity-levels, and in the second one we evaluated global visual appearance among physical scenes and tone-mapped images, which were presented side by side. We ranked the TMOs according to how well they reproduce the results obtained in the physical scene. Our results show that ranking position clearly depends on the adopted evaluation criteria, which implies that, in general, these tone-mapping algorithms consider either local or global image attributes but rarely both. We conclude that a more thorough and standardized evaluation criteria are needed to study all the characteristics of TMOs, as there is ample room for improvement in future developments.
Crystallographic Parameters and Band Gap of CdSxSe1-X Mixed Crystals
Creators: name: Al-Bassam, A.A.
name: Elani, U.A.
Publisher: name: WIP
Year: 2013
Subjects: MATERIAL STUDIES, NEW CONCEPTS, ULTRA-HIGH EFFICIENCY AND SPACE TECHNOLOGY
Fundamental Material Studies

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 180-184
description: Crystals of CdSxSe1-x alloys have been
grown from the vapour phase. X-ray
diffractometry has shown that CdS-CdSe
mixed crystals had the wurtzite structure for
all compositions between CdS and CdSe.
The lattice parameters (both a and c) were
found to show a linear dependence with
composition. The dependence of the lattice
parameters of a and c on composition can he
expressed as:
a(x) = 4.165 + 0.16 x
c(x) = 6.713 + 0.27x.
The variation of band gap with composition
was determined for these samples from
optical absorption measurements, which
showed that the band gap varied smoothly
and monotonically, but not linearly over the
composition range Typical results were
found between 2-42-1.74 eV at room
temperature.
Optical Upconverting Films to Increase the Photocurrent Generation of Crystalline Silicon Solar Cells
Creators: name: Woo, S.
name: Stride, J.A.
name: Reece, P.J.
name: Huang, S.
name: Corkish, R.P.
name: Conibeer, G.J.
Publisher: name: WIP
Year: 2013
Subjects: MATERIAL STUDIES, NEW CONCEPTS, ULTRA-HIGH EFFICIENCY AND SPACE TECHNOLOGY
New Materials and Concepts for Cells

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 176-179
description: To overcome the transmission loss of conventional single band gap solar cells, modification of the
solar spectrum using rare-earth trivalent ion based upconverting materials has been investigated in this paper. The
hexagonal NaYF4:Er3+ nanocrystals were prepared by the thermal decomposition of metal trifluoroacetate precursors
in an organic solvent using a surfactant. The upconverting films of the as-synthesized nanocrystals were prepared by
a spin casting and post-soaking processes. The optical converter was optimized as functions of erbium doping
concentration and film thickness. The upconversion emission resulting from various laser power densities has been
intensively investigated. Through this investigation, the power and the doping concentration dependent upconversion
spectroscopy analysis explains dominant factors that affect the overall upconversion efficiency. The required optimal
erbium doping concentration and film thickness have been explained and determined.
Effects of the Size of PV Arrays on Mismatch Losses under Partial Shading Conditions Caused by Moving Clouds
Creators: name: Lappalainen, K.
name: Mäki, A.
name: Valkealahti, S.
Publisher: name: WIP
Year: 2013
Subjects: PV SYSTEMS
PV System and Grid Integration Aspects

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 4071-4076
description: The configuration of a photovoltaic (PV) generator affects the operation of the generator and under
partial shading conditions it can have a major effect on the mismatch power losses of the generator. Furthermore, the
size of the PV generator array has a great effect on the mismatch losses. In this paper, the effects of the size of PV
arrays on the mismatch losses are studied under partial shading conditions caused by moving clouds. The effects are
studied with three different configurations of a PV generator: series-parallel (SP), total-cross-tied (TCT) and multistring
(MS). The studied directions of the movement of shadows are perpendicular, parallel and diagonal to the
strings of PV arrays. The work has been conducted by using an experimentally verified MATLAB Simulink model of
a PV module based on the well-known one-diode model of a PV cell. Mismatch losses were found to be very
sensitive to the size of the array and to the direction of the movement of shadows. Thus, in order to minimize
mismatch losses, the size of the array and the dominant direction of the movement of clouds in the power plant area
should be taken carefully into account in the designing of PV generators.
A New PV Plant Simulation Tool
Creators: name: Mau, S.
name: Melián, D.
name: Barandalla García, D.
name: Hidalgo López, C.
Publisher: name: WIP
Year: 2013
Subjects: PV SYSTEMS
PV System Reliability and Availability

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 4005-4009
description: The Energy Yield Prediction (EYP) of a planned photovoltaic (PV) plant is one of the key
parameters that determines the economic profitability of a PV plant. In that sense, the use of an accurate model to
estimate the electricity production of the solar PV plant is required. This paper presents the new internal GL GH
PV plant simulation tool which includes some specific features demanded by most players in the PV industry
(Lenders, Developers and Consultants). The paper describes the simulation procedure. It presents the results from
the ongoing validation process and finally gives an outlook on the future software development activities.
InP/InGaAsP Heterostructures for Hot Carrier Solar Cells (HCSC)
Creators: name: Rodière, J.
name: Lombez, L.
name: Guillemoles, J.F.
name: Folliot, H.
name: Durand, O.
Publisher: name: WIP
Year: 2013
Subjects: MATERIAL STUDIES, NEW CONCEPTS, ULTRA-HIGH EFFICIENCY AND SPACE TECHNOLOGY
New Materials and Concepts for Cells

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 127-128
description: We investigated a semiconductor heterostructure based on InGaAsP multi quantum wells using optical and
electrical characterizations. The optical analysis allows us to probe the potential of such a structure in the scope of hot
carrier solar cell device. Using different photoluminescence techniques, the quasi Fermi level splitting μ is estimated as
a function of the excitation power. High value of μ is found as well as high carrier temperature. These results are
compared to electrical measurements.
Simulation of Electrical Energy Generated by Photovoltaic Modules under Natural Conditions
Creators: name: Sanchez Reinoso, C.R.
name: Cutrera, M.
name: Battioni, M.
name: Milone, D.H.
name: Buitrago, R.H.
Publisher: name: WIP
Year: 2013
Subjects: PV SYSTEMS
PV System Reliability and Availability

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 4028-4028
description: The effective efficiency of PV modules under natural conditions differs significantly from efficiency
data that may be available a priori from their data sheets. Moreover, this efficiency is not constant.
We measured the output energy of photovoltaic modules, made of monocrystalline, polycrystalline and amorphous
silicon, mounted at 30° to the horizontal plane, together with the climatic data and radiation. We modeled a function
of generated energy using intelligence computational techniques for the different materials. The found functions show
a common structure in the studied materials but differ on the equation constants of the model. These results allow to
estimate the energy generated on the basis of data available for different types of modules under real operating
conditions.
CLASH-VLT: A Highly Precise Strong Lensing Model of the Galaxy Cluster RXC J2248.7-4431 (Abell S1063) and Prospects for Cosmography
Creators: name: Caminha, G. B.
name: Grillo, C.
name: Rosati, P.
name: Balestra, I.
name: Karman, W.
name: Lombardi, M.
name: Mercurio, A.
name: Nonino, M.
name: Tozzi, P.
name: Zitrin, A.
name: Biviano, A.
name: Girardi, M.
name: Koekemoer, A. M.
name: Melchior, P.
name: Meneghetti, M.
name: Munari, E.
name: Suyu, S. H.
name: Umetsu, K.
name: Annunziatella, M.
name: Borgani, S.
name: Broadhurst, T.
name: Caputi, K. I.
name: Coe, D.
name: Delgado-Correal, C.
name: Ettori, S.
name: Fritz, A.
name: Frye, B.
name: Gobat, R.
name: Maier, C.
name: Monna, A.
name: Postman, M.
name: Sartoris, B.
name: Seitz, S.
name: Vanzella, E.
name: Ziegler, B.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We perform a comprehensive study of the total mass distribution of the galaxy cluster RXCJ2248 ($z=0.348$) with a set of high-precision strong lensing models, which take advantage of extensive spectroscopic information on many multiply lensed systems. In the effort to understand and quantify inherent systematics in parametric strong lensing modelling, we explore a collection of 22 models where we use different samples of multiple image families, parametrizations of the mass distribution and cosmological parameters. As input information for the strong lensing models, we use the CLASH HST imaging data and spectroscopic follow-up observations, carried out with the VIMOS and MUSE spectrographs, to identify bona-fide multiple images. A total of 16 background sources, over the redshift range $1.0-6.1$, are multiply lensed into 47 images, 24 of which are spectroscopically confirmed and belong to 10 individual sources. The cluster total mass distribution and underlying cosmology in the models are optimized by matching the observed positions of the multiple images on the lens plane. We show that with a careful selection of a sample of spectroscopically confirmed multiple images, the best-fit model reproduces their observed positions with a rms of $0.3$ in a fixed flat $Λ$CDM cosmology, whereas the lack of spectroscopic information lead to biases in the values of the model parameters. Allowing cosmological parameters to vary together with the cluster parameters, we find (at $68\%$ confidence level) $Ω_m=0.25^{+0.13}_{-0.16}$ and $w=-1.07^{+0.16}_{-0.42}$ for a flat $Λ$CDM model, and $Ω_m=0.31^{+0.12}_{-0.13}$ and $Ω_Λ=0.38^{+0.38}_{-0.27}$ for a universe with $w=-1$ and free curvature. Using toy models mimicking the overall configuration of RXCJ2248, we estimate the impact of the line of sight mass structure on the positional rms to be $0.3\pm 0.1$.(ABRIDGED)
description: 23 pages, 13 figures, accepted for publication in A&A
100-Period, 1.23 eV Bandgap InGaAs / GaAsP Quantum Wells for Efficiency-Enhanced GaAs Solar Cells: Toward Current-Matched Ge-Based Tandem Cells
Creators: name: Fujii, H.
name: Toprasertpong, K.
name: Wang, Y.
name: Watanabe, K.
name: Sugiyama, M.
name: Nakano, Y.
Publisher: name: WIP
Year: 2013
Subjects: MATERIAL STUDIES, NEW CONCEPTS, ULTRA-HIGH EFFICIENCY AND SPACE TECHNOLOGY
New Materials and Concepts for Cells

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 129-134
description: The present study proposes comprehensive design principle for the InGaAs/GaAsP multiple quantum
well (MQW) solar cells to overcome the trade-off problem between light absorption and carrier collection,
particularly based on a systematical investigation of the effects of GaAsP barrier on the carrier transport with various
barrier designs. The fundamental strategies for the structure optimization are: 1) InGaAs wells should be thinner and
deeper to achieve both higher absorption coefficient and lower compressive strain accumulation. 2) GaAs interlayers
with a thickness of a-few-nm are effective to extend the absorption edge to longer wavelengths without additional
compressive strain, and to suppress lattice relaxation during growth. 3) GaAsP barriers should be thinner than 3 nm to
facilitate tunneling transport, and their phosphorus content should be minimized while avoiding influential lattice
relaxation. After the structure optimization of 1.23 eV bandgap quantum wells, the cell with 100-period
In0.30GaAs(3.5 nm)/GaAs(2.7 nm)/GaAsP0.40(3.0 nm) MQWs achieved much improved cell performance, showing
16.2% AM1.5 efficiency without AR coating, and 70% IQE beyond the GaAs band-edge. Compared to GaAs control
cell, the optimized cell showed absolute enhancement in AM1.5 efficiency, and 1.22 times higher efficiency with
38% current enhancement under AM1.5 cut-off by a 665 nm long-pass filter.
Fabrication of Type-II Self-Assembled Ge/Si Quantum Dots for High Efficiency Solar Cells
Creators: name: Gotoh, K.
name: Oshima, R.
name: Sugaya, T.
name: Sakata, I.
name: Matsubara, K.
name: Kondo, M.
Publisher: name: WIP
Year: 2013
Subjects: MATERIAL STUDIES, NEW CONCEPTS, ULTRA-HIGH EFFICIENCY AND SPACE TECHNOLOGY
New Materials and Concepts for Cells

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 147-150
description: We characterized structural and optical properties of multi-layer stacked Ge quantum dots (QDs) on a Si (001) substrate
grown by molecular beam epitaxy for use in solar cells. A pulse growth technique, which consisted of the combination of
a high deposition rate of 2.8 Å/s and a 5-s growth interruption, was employed in order to obtain dense Ge QDs with
superior uniformity. The photoluminescence (PL) characterization showed that PL peak energies for 20-layer-stacked
QDs were proportional to the third root of excitation power, which was attributed to the type II optical emission
properties in Si/Ge heterostructures. For solar cell characterization, the absorption edge of a Ge/Si hetero-junction QD
solar cell grown with a-Si:H hetero-junction layers was extended to 1300 nm, compared to 1200 nm for a Si solar cell.
Physiotherapy clinical education : the patients' perspective
Creators: name: Kent, Fiona.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Barbastella Gray 1821
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Vespertilionidae
Barbastella

description: Barbastella Gray, 1821. London Med. Repos., 15:300. TYPE SPECIES: Vespertilio barbastellus Schreber, 1774.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 198, DOI: 10.5281/zenodo.7353060
Optimization of Hybrid Colloidal Quantum Dots GaAs Solar Cells with High Absorption Enhancement
Creators: name: Han, H.-V.
name: Lin, C.-C.
name: Chen, H.C.
name: Tsai, Y.-L.
name: Yeh, Y.-L.
name: Kuo, H.-C.
name: Yu, P.
Publisher: name: WIP
Year: 2013
Subjects: MATERIAL STUDIES, NEW CONCEPTS, ULTRA-HIGH EFFICIENCY AND SPACE TECHNOLOGY
New Materials and Concepts for Cells

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 151-153
description: Because of the global warming effect and energy crisis, the usage of solar energy gets more and more
important in recent years. In particular, GaAs-based solar cells have been regarded as a promising candidate to provide
high power conversion efficiency because of their direct band gap and strong absorption over the entire visible part of
the solar spectrum. In this work, we demonstrate a hybrid design of traditional GaAs-based solar cell combined with
colloidal quantum dots. Several photovoltaic parameters were enhanced, including the short circuit current density, fill
factor, and power conversion efficiency, which were measured under white light illumination similar to the solar
spectrum. With anti-reflective feature at long wavelength and down-conversion at high energy photons, the quantum
dot effectively enhance the overall power conversion efficiency by as high as 25% compared to traditional GaAs-based
device. The evolution of weighted reflectance as a function of the dilution factor of QDs has been investigated. The
dilution factors of quantum dots solution also have been optimized for single junction GaAs devices. We also use the
EQE enhancement spectrum to further distinguish between the photon down-conversion and antireflection capability
of QDs. Finally, we believe this technology shall be a great candidate for next generation of highly efficient
photovoltaic devices.
Gravitational Redshift of Emission Lines in the AGN Spectra
Creators: name: Bon, Nataša
name: Bon, Edi
name: Marziani, Paola
name: Jovanović, Predrag
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The detection of gravitationally redshifted optical emission lines has been reported just for a few active galaxies. In this paper we give a short overview of studies that analyzed or exploited the detection of the gravitational redshift in optical AGN spectra. In addition, we tested the consistency of gravitational redshift as the physical origin of the redward shifts observed in their spectra using a sample of $\approx$ 50 Hamburg-ESO intermediate to high redshift quasars that are among the most luminous quasars known ($10^{47} \lesssim L \lesssim 10^{48}$ erg/s), and are expected to host very massive black holes. To this aim we modeled the line profile with accretion disk models around a black hole.
description: 10 pages, 2 figures, 3 tables
Automatic Detection of PV Systems Failures from Monitoring Validated on 10,000 BIPV Systems in Europe
Creators: name: Leloux, J.
name: Narvarte, L.
name: Luna, A.
name: Desportes, A.
Publisher: name: WIP
Year: 2013
Subjects: PV SYSTEMS
PV System Reliability and Availability

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 4013-4016
description: This work presents a method that allows for automatically analyzing the performance and detecting the
failures of a BIPV system at different temporal resolutions, in particular at monthly, daily and hourly levels. We have
developed a procedure that is capable of detecting operational problems on the sole basis of the energy production data
measured at the BIPV systems, and which does not require the knowledge of their operating conditions. This procedure is
based on the identification of abnormal variations of a performance indicator designated by Performance To Peers (P2P),
because it is based on comparisons between neighboring and similar installations, i.e. peer PV systems. The P2P has
proved to be a much more stable performance indicator than the Performance Ratio (PR), and it has allowed for detecting
and quantifying the energetic impact of the most relevant causes of failures occurring at approximatively 10,000 BIPV
systems in Europe whose energy production data were monitored during more than two years with a temporal resolution
of 1 data/10 minutes.
Stabilized Performance Ratio Calculation on Photovoltaic Parks
Creators: name: Gilg, M.
name: Grünsteidl, S.
name: Schmidt, M.
name: Stern, O.
name: Müggenburg, E.
name: Becker, G.
Publisher: name: WIP
Year: 2013
Subjects: PV SYSTEMS
PV System Reliability and Availability

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 4000-4004
description: The performance ratio (PR) illustrates the efficiency of a photovoltaic system and is used as an
essential quality criterion to evaluate photovoltaic power plants. The expressiveness of the PR was critical analysed in
several studies [1-4] but no calculation alternatives were presented to the best of our knowledge. The maximum
values of the PR arise in months with the lowest yield. The temperature of the modules affects the calculation of the
PR essentially because it codetermines the real efficiency of photovoltaic modules. Due to the influence of the
temperature on the calculation of the PR, systems faced to the north and systems situated at places with low
surrounding temperatures that have a lower operating efficiency, show the highest PR values. Furthermore, particular
thin film technologies show seasonal variations [5]. With consideration of the ambient conditions in the calculation of
a so-called corrected PR these effects can be compensated. With the usage of alternative irradiation data such as
direct and diffuse irradiation, the construction design of the system can be taken into account. It is essential to
measure these irradiation data because the conversion of horizontal irradiation results in a high calculation error.
Stabilization of measurement data can be achieved by using additional filtering and compensation methods. In the
work presented, flaws and hindrances in performance analyses are shown with simulation results; compensation
methods are presented and applied to long term measurement datasets of real solar generators.
Experimental Studies of Signal Propagation in PV Module Strings
Creators: name: Takashima, T.
Publisher: name: WIP
Year: 2013
Subjects: PV SYSTEMS
PV System Reliability and Availability

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 4010-4012
description: The fault diagnosis of PV systems is very important not only to maximize the lifetime yield of PV
systems but also to prevent the troubles like fire caused by PV systems. In this paper, the signal propagation in PV
module string for the signal response analysis is described. In the analysis, the signal into the PV module string, the
reflected signal, and the passed signal are observed. The signal delay is translated into the fault position in the string,
and the waveform change is translated into the fault type and the fault amount. The method can detect not only the
disconnection but also the impedance change with degradations in the PV module string. The experimental results
were reported. The reflected signal and the passed signal were compared with normal and failed modules. The signal
propagation path may change with existence of the path failure. This work is the fundamental for the signal response
analysis for PV module strings. With the detailed analysis, it would be possible to detect the faulty module or
interconnector in PV module string.
Elemental abundances of the supergiant stars σ Cygnus and η Leonis
Creators: name: Tanriverdi, Taner
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: This study aims to analyse the elemental abundances for the late B type supergiant star $σ$ Cyg and the early A-type supergiant $η$ Leo using ATLAS9 (Kurucz, 1995; Sbordone et al., 2004), assuming local thermodynamic equilibrium (LTE). The spectra used in this study are obtained from Dominion Astrophysical Observatory and have high resolution and signal-to-noise ratios. The effective temperature and the surface gravity of $σ$ Cyg are determined from the ionisation equilibria of Al I/II, Mg I/II, Fe I/II, Fe II/III , and by fitting to the wings of H$_γ$ and H$_β$ profiles as $\textit{T}$$_{eff}$ = 10388 K and log $\textit{g}$ = 1.80. The elemental abundances of $η$ Leo} are determined using $\textit{T}$$_{eff}$ = 9600 K and log $\textit{g}$ = 2.00, as reported by Przybilla et al. (2006). The ionisation equilibria of C I/II, N I/II, Mg I/II, Ca I/II, Cr I/II and Fe I/II/III are also satisfied in the atmosphere of $η$ Leo. The radial velocities of $σ$ Cyg and $η$ Leo are -7.25$\pm$7.57 km s$^{-1}$ and 10.40 $\pm$ 13.37 km s$^{-1}$, respectively. The derived projected rotational velocities \textit{vsini} from synthetic spectra are 27 and 2 km s$^{-1}$ for both stars, respectively. The macroturbulent velocities ($ζ$) are 24 $\pm$ 2 km s$^{-1}$ and 14.5 $\pm$ 1.5 km s$^{-1}$. Also, the microturbulent velocities ($ξ$) have been determined for both of stars as 3.5 km s$^{-1}$. The CNO abundance results of $σ$ Cyg and $η$ Leo show C deficiency, N overabundance and O in excess.
description: 8 tables, 6 figures, and 45 pages, Published in New Astronomy
Assessment of Photovoltaic Panels for Next Generation Solar Park Application
Creators: name: Asghar, M.I.
Publisher: name: WIP
Year: 2013
Subjects: PV SYSTEMS
PV System Reliability and Availability

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 4033-4035
description: The primary purpose of the work is to perform an assessment on the photovoltaic panels for next
generation solar park applications. Depending on the photovoltaic technology, there are different challenges which
photovoltaic panels have to face in a solar park application. The motivation to this work is to suggest ways to
improve the solar parks electricity output. In addition, suitable applications for different photovoltaic technologies are
suggested. It was found that selection of photovoltaic panel for different applications including solar park
applications depends on many factors including annual solar irradiation, environmental issues, aesthetics, cost issues,
stability and performance.
Barbastella barbastellus
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Vespertilionidae
Barbastella
Barbastella barbastellus

description: Barbastella barbastellus (Schreber, 1774). Die Säugethiere, 1:168. TYPE LOCALITY: France, Burgundy. DISTRIBUTION: England and W Europe to Caucasus; Turkey; Crimea (Ukraine); Morocco; larger Mediterranean islands; Canary Isis; perhaps Senegal. SYNONYMS: communis, daubentonii. COMMENTS: Does not include leucomelas, but see Qumsiyeh (1985).
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on pages 198-199, DOI: 10.5281/zenodo.7353060
description: {"references": ["Qumsiyeh, M. B. 1985. The bats of Egypt. Special Publications, The Museum, Texas Tech University Press, 23: 1 - 102."]}
A CdS Nano-Dipole Solar Cell
Creators: name: Huang, F.
name: Liu, X.
name: Wang, W.
Publisher: name: WIP
Year: 2013
Subjects: MATERIAL STUDIES, NEW CONCEPTS, ULTRA-HIGH EFFICIENCY AND SPACE TECHNOLOGY
New Materials and Concepts for Cells

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 154-165
description: In this work, we report significant characteristics of nanodipole solar cells that would facilitate the understanding of
the mechanism underlying the nanodipole photovoltaic (PV) effect. A CdS–CdTe pseudobinary system underwent phase
segregation during high-temperature CdCl2 treatment in a N2 atmosphere, giving convincing evidence to prove the existence
of wurtzite CdS0.956Te0.044 nanodipoles embedded in zinc blende CdS0.04Te0.96. On the microscale, a strong synchronous inplane
piezoresponse by wurtzite CdS0.956Te0.044 was observed using piezoelectric force microscopy in the vertical and lateral
modes. Further, it was observed that a piezoresponse and analogous electric hysteresis existing at the grain boundaries varied
with an external direct current electrical field; this phenomenon is considered to contribute significantly to the hysteresis
behavior of photovoltage. In addition, high-resolution transmission electron microscopy analysis indicated the formation of
hexagonal CdS0.956Te0.044 particles in the film. On the macroscale, the photovoltage of a CdS nanodipole device with a
symmetric structure was found to be tunable and became stable after the application of a DC field. This feature of tunable
photovoltage cannot be explained by the classical theory of junction devices.
Influence of Ni doping on critical parameters of PdTe superconductor
Creators: name: Goyal, Reena
name: Jha, Rajveer
name: Tiwari, Brajesh
name: Dixit, Ambesh
name: Awana, V. P. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report the effect of Ni doping on superconductivity of PdTe. The superconducting parameters like critical temperature (Tc), upper critical field (Hc2) and normalized specific-heat jump are reported for Ni doped Pd1-xNixTe. The samples of series Pd1-xNixTe with nominal compositions x=0, 0.01, 0.05, 0.07, 0.1, 0.15, 0.2, 0.3 and 1.0 are synthesized via vacuum shield solid state reaction route. All the studied samples of Pd1-xNixTe series are crystallized in hexagonal crystal structure as refined by Rietveld method to space group P63/mmc. Both the electrical resistivity and magnetic measurements revealed that Tc decreases with increase of Ni concentration in Pd1-xNixTe. The magneto-transport measurements suggest that flux is better pinned for 20% Ni doped PdTe as compared to other compositions of Pd1-xNixTe. The effect and contribution of Ni 3d electron to electronic structure and density of states near Fermi level in Pd1-xNixTe are also studied using first-principle calculations within spin polarized local density approximation. The overlap of bands at Fermi level for NiTe is larger as compared to PdTe. Also the density of states just below Fermi level (in conduction band) drops much lower for PdTe than as for NiTe. Summarily, Ni doping in Pd1-xNixTe superconductor suppresses superconductivity moderately and also Ni is of non magnetic character in these compounds.
description: 19 pages Text + Figs: Substantially revised version of arXiv:1509.00945
Ionized outflows in luminous type 2 AGNs at z<0.6: no evidence for significant impact on the host galaxies
Creators: name: Villar-Martin, Montse
name: Arribas, Santiago
name: Emonts, Bjorn
name: Humphrey, Andrew
name: Tadhunter, Clive
name: Bessiere, Patricia
name: Lavers, Antonio Cabrera
name: Almeida, Cristina Ramos
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the presence of extended ionized outflows in 18 luminous type 2 AGNs (11 quasars and 7 high luminosity Seyfert 2s) at 0.3=severalx100 pc and upper limits R<1-2 kpc. Our results are inconsistent with related studies which suggest that large scale R~several-15 kpc are ubiquitous in QSO2. We study the possible causes of discrepancy and propose that seeing smearing is the cause of the large inferred sizes. The implications in our understanding of the feedback phenomenon are important since the mass M (through the density), mass injection M(dot) and energy injection rates E(dot) of the outflows become highly uncertain. One conclusion seems unavoidable: M, M(dot), E(dot) are modest or low compared with previous estimations. No evidence is found supporting that typical outflows can affect the interstellar medium of the host galaxies accross spatial scales >~1-2 kpc.
description: Accepted for publication in MNRAS (35 pages, 23 figures)
De Sitter from T-branes
Creators: name: Cicoli, Michele
name: Quevedo, Fernando
name: Valandro, Roberto
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Hidden sector D7-branes with non-zero gauge flux are a generic feature of type IIB compactifications. A non-vanishing Fayet-Iliopoulos term induced by non-zero gauge flux leads to a T-brane configuration. Expanding the D7-brane action around this T-brane background in the presence of three-form supersymmetry breaking fluxes, we obtain a positive definite contribution to the moduli scalar potential which can be used as an uplifting source for de Sitter vacua. In this way we provide a higher-dimensional understanding of known 4D mechanisms of de Sitter uplifting based on hidden sector F-terms which are non-zero because of D-term stabilisation.
description: 23 pages, 2 figures
Recurrent Network Models Of Sequence Generation And Memory
Creators: name: Rajan, Kanaka
name: Harvey, Christopher D
name: Tank, David W
Publisher: name: arXiv
Year: 2016
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Sequential activation of neurons is a common feature of network activity during a variety of behaviors, including working memory and decision making. Previous network models for sequences and memory emphasized specialized architectures in which a principled mechanism is pre-wired into their connectivity. Here we demonstrate that, starting from random connectivity and modifying a small fraction of connections, a largely disordered recur- rent network can produce sequences and implement working memory efficiently. We use this process, called Partial In-Network Training (PINning), to model and match cellular resolution imaging data from the posterior parietal cortex during a virtual memory- guided two-alternative forced-choice task. Analysis of the connectivity reveals that sequences propagate by the cooperation between recurrent synaptic interactions and external inputs, rather than through feedforward or asymmetric connections. Together our results suggest that neural sequences may emerge through learning from largely unstructured network architectures.
description: 60 pages, 6 figures
Static spherically symmetric wormholes with isotropic pressure
Creators: name: Cataldo, Mauricio
name: Liempi, Luis
name: Rodríguez, Pablo
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we study static spherically symmetric wormhole solutions sustained by matter sources with isotropic pressure. We show that such spherical wormholes do not exist in the framework of zero-tidal-force wormholes. On the other hand, it is shown that for the often used power-law shape function there is no spherically symmetric traversable wormholes sustained by sources with a linear equation of state $p=ωρ$ for the isotropic pressure, independently of the form of the redshift function $ϕ(r)$. We consider a solution obtained by Tolman at 1939 for describing static spheres of isotropic fluids, and show that it also may describe wormhole spacetimes with a power-law redshift function, which leads to a polynomial shape function, generalizing a power-law shape function, and inducing a solid angle deficit.
description: 8 pages, 3 figures
Valley-enhanced fast relaxation of gate-controlled donor qubits in silicon
Creators: name: Boross, Péter
name: Széchenyi, Gábor
name: Pályi, András
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Gate control of donor electrons near interfaces is a generic ingredient of donor-based quantum computing. Here, we address the question: how is the phonon-assisted qubit relaxation time $T_1$ affected as the electron is shuttled between the donor and the interface? We focus on the example of the `flip-flop qubit' [Tosi et al., arXiv:1509.08538v1], defined as a combination of the nuclear and electronic states of a phosphorous donor in silicon, promising fast electrical control and long dephasing times when the electron is halfway between the donor and the interface. We theoretically describe orbital relaxation, flip-flop relaxation, and electron spin relaxation. We estimate that the flip-flop qubit relaxation time can be of the order of $100 \, μ\text{s}$, 8 orders of magnitude shorter than the value for an on-donor electron in bulk silicon, and a few orders of magnitude shorter (longer) than the predicted inhomogeneous dephasing time (gate times). All three relaxation processes are boosted by (i) the nontrivial valley structure of the electron-phonon interaction, and (ii) the different valley compositions of the involved electronic states.
description: 12 pages, 3 figures