cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the Existence of Mock Injective Modules for Algebraic Groups
Creators: name: Hardesty, William D.
name: Nakano, Daniel K.
name: Sobaje, Paul
Publisher: name: arXiv
Year: 2016
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20G05, 20J06

description: Let $G$ be an affine algebraic group scheme over an algebraically closed field $k$ of characteristic $p>0$, and let $G_r$ denote the $r$-th Frobenius kernel of $G$. Motivated by recent work of Friedlander, the authors investigate the class of mock injective $G$-modules, which are defined to be those rational $G$-modules that are injective on restriction to $G_r$ for all $r\geq 1$. In this paper the authors provide necessary and sufficient conditions for the existence of non-injective mock injective $G$-modules, thereby answering a question raised by Friedlander. Furthermore, the authors investigate the existence of non-injective mock injectives with simple socles. Interesting cases are discovered that show that this can occur for reductive groups, but will not occur for their Borel subgroups.
Efficiency of InGaAs/GaAsP Multiple Quantum Well Solar Cell on Various Misoriented GaAs Substrates Grown by Metalorganic Vapor Phase Epitaxy
Creators: name: Sodabanlu, H.
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
Fundamental Material Studies

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 246-248
description: In this work, the influences of misorientation of GaAs substrate on performance of InGaAs/GaAsP
multiple quantum well (MQW) solar cells were investigated. The difficulty of MQW growth on misoriented GaAs
due to thickness modulation effect was suppressed by decreasing surface migration of group III atoms using low
growth temperature. The efficiency of MQW solar cells on just-oriented (100) GaAs decreased with reducing of
growth temperature. In contrast, efficiencies of samples on 2º-off and 6º-off GaAs increased when the temperature
was decreased from 600 °C to 550 °C owing to the improvement of MQW abruptness. Further lowering the growth
temperature resulted in better MQW interface abruptness, however, the efficiency was degraded which was possibly
due to poor carrier collection caused by high impurity level. Just-oriented GaAs substrates are favorable for singlejunction
MQW solar cell owing to their efficiency and ease of growth. Despite the difficulty of growth, strainbalanced
InGaAs/GaAsP MQWs are promising as a key technology to improve efficiencies of III/V-Ge multiplejunction
solar cells by current matching.
Development of a Linear Concentrator Photovoltaic Module Using an Innovative Cyclindrical Aspheric Lens
Creators: name: Avaliani, I.
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; 254-257
description: Systems of optical concentrators increase an opportunity of utilization of a solar energy and provide high
efficiency of transformation of energy. In this article the method of PV converters efficiency improvement is offered. We
designed and built new optics for photovoltaic concentrator systems based on biconvex, aspheric, linear-focus plastic
lenses and high efficiency multijunction solar cells. These lenses provide a number of advantages for practical
implementation: simplification of the electrical connections, increased electrical efficiency, better usage of the cell active
area, and simplification of the cell cooling system. Also we carried out experiments with another set of quadratic lenses
with dimensions of 190mm×190mm and optical focuses of 700 and 800 mm. In this approach the focal area of
concentrated solar energy was square, 11mm×11mm, with a concentration ratio of 300 and a measured generated power of
6,4 Watt. The results of this experimental investigation of the performance of PV cells under an aspherical cylinder lens
with a linear focus resulted in a measured efficiency up to 26%. PV-block consists of 15 aspherical lenses – optical
concentrators. In the focus of these lenses (optical focus is equal to 700mm) are placed the Ga-As multijunction solar cells
(15pcs).
Locally toroidal polytopes of rank 6 and sporadic groups
Creators: name: Pasechnik, Dmitrii V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Group Theory (math.GR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 20D08, 20D06, 51E24, 51F15, 52B70

description: We augment the list of finite universal locally toroidal regular polytopes of type {3,3,4,3,3} due to P.McMullen and E.Schulte, adding as well as removing entries. This disproves a related long-standing conjecture. Our new universal polytope is related to a well-known Y-shaped presentation for the sporadic simple group $Fi_{22}$, and admits $S_4\times O_8^+(2){:}S_3$ as the automorphism group. We also discuss further extensions of its quotients in the context of Y-shaped presentations. As well, we note that two known examples of finite universal polytopes of type {3,3,4,3,3} are related to Y-shaped presentations of orthogonal groups over GF(2). Mixing construction is used in a number of places to describe covers and 2-covers.
description: LaTeX, 12 pages
How to Mitigate Risks in PV Projects : Lessons Learned Worldwide in Manufacturing, Commissioning and Operation of PV Power Plants
Creators: name: Goy, S.
name: Tjendgdrawira, C.
name: Gheysen, T.
name: Irissou, A.
name: Ortega, S.
name: Morilla Padial, C.
Publisher: name: WIP
Year: 2013
Subjects: PV SYSTEMS
PV System and Grid Integration Aspects

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 4114-4117
description: Detailed technical due diligence on PV projects are a key step in ensuring project compliance and
smooth development. Such services enable project stakeholders to identify crucial faults and issues over the project
lifecycle. This paper discusses issues commonly observed during due diligence missions at three crucial phases of
project development: PV module manufacturing, PV plant commissioning, and PV plant operation. The study
identifies the main issues occurring at these different phases, their consequences, potential impacts on system safety
or performance, and finally, the trends in their occurrence over time. For each phase, the issues are statistically
analyzed. For this study, 3E analyzed the data from 52 modules technical assessments, 98 plant commissionings and
the operational monitoring of 375 PV parks. The data is taken from 3E’s case database and covers plants of different
scale worldwide, over the period from 2009 to 2013.
A Method for Evaluating the Production Capacity of Operational PV Plants Based on Solar Irradiation Anomalies
Creators: name: Burlot, Y.
name: Dondera, D.
name: Patriarche, M.
name: Vidal, S.
Publisher: name: WIP
Year: 2013
Subjects: PV SYSTEMS
PV System and Grid Integration Aspects

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 4098-4101
description: Prior to construction, the most common way of estimating the future production of a PV plant is the
application of numerical models or simulations. The uncertainty of the output calculated this way is relatively high,
which often leads to a misinterpretation of the difference between the expected production of the yield assessment
and the production read at the meter during the first months of operation. Indeed, once the plant has been connected
to the grid for several months, it is preferable to consider the actual production data when assessing its performance.
However, it is essential that this assessment takes into account important parameters influencing the production, such
as irradiation, temperature or downtime. This paper focuses on local irradiation fluctuations and its influence on the
energy production of a PV plant. An indicator is proposed to quantify this variability: the “irradiation anomaly”. It
consists in evaluating the deviation of irradiation from the long-term average for a given period. First, the monthly
horizontal irradiation anomaly is defined and mapped at country scale. In a second step, the influence of module tilt
and azimuth on this anomaly is analysed. Finally, a method for assessing future production of a PV plant integrating
this indicator is proposed through a case study.
Performance of PV System Technologies in Hawaii.
Creators: name: Busquet, S.
name: Matthews, D.
name: Gaillard, N.
name: Cutshaw, L.
name: Rocheleau, R.E.
Publisher: name: WIP
Year: 2013
Subjects: PV SYSTEMS
PV System and Grid Integration Aspects

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 4118-4122
description: Hawaii has been experiencing a rapid increase in the number of commercial and residential grid
connected photovoltaic (PV) installations due to an abundant solar resource, high cost of electricity, and generous tax
incentives. The Hawaii Natural Energy Institute (HNEI) of the University of Hawaii at Manoa is conducting research
in several areas to better understand the challenges of managing high-penetration of renewable technologies on the
grids operated by the Hawaiian Electric companies. PV test beds are deployed to characterize the production of the
grid-connected PV systems in different locations in Hawaii. They were carefully designed in order to assess the PV
system performance, to estimate the different losses, and to evaluate the impact of the parameters including
environmental conditions, PV module technologies, and system configurations. PV test beds will allow side-by-side
comparison of grid connected PV systems using PV modules from several manufacturers and different system
configurations. In addition, an I-V tracer will evaluate the losses in the PV modules, by testing one sample of each
type of module. This document presents the analysis plan, the PV test beds, data acquisition systems (DAS), and the
architecture of the data collection network developed to support the analysis of PV system performance.
Investigation of Compact Solar Simulator Based on High Power Light Emitting Diodes
Creators: name: Tamošiunas, V.
name: Novickovas, A.
name: Vaitkunas, A.
name: Mekys, 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; 206-208
description: In this contribution, we report on the evaluation of high power LEDs for application in solar
simulators. Six types of light emitting diodes were used. It is demonstrated, that a small array (total 25) of selected
light emitting diodes provides sufficient irradiance to achieve AM1.5G requirements for the area of at least several
cm2. A reduction of LED current can be applied to fine tune the resulting spectrum to obtain the required integrated
irradiance for all ranges according to A class requirements.
Designing III-V Multijunction Solar Cells on Silicon
Creators: name: Connolly, J.P.
name: Mencaraglia, D.
name: Renard, C.
name: Bouchier, D.
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; 219-228
description: Single junction Si solar cells dominate photovoltaics but are close to their efficiency limits. This paper
presents ideal limiting efficiencies for tandem and triple junction multijunction solar cells subject only to the constraint of
the Si bandgap and therefore recommending optimum cell structures departing from the single junction ideal. The use of
III-V materials is considered, using a novel growth method capable of yielding low defect density III-V layers on Si. In
order to evaluate the real potential of these proposed multijunction designs, a quantitative model is presented, the strength
of which is the joint modelling of external quantum efficiency and current-voltage characteristics using the same
parameters. The method yields a single parameter fit in terms of the Shockley-Read-Hall lifetime. This model is
validated by fitting experimental data of external quantum efficiency, dark current, and conversion efficiency of world
record tandem and triple junction cells under terrestrial solar spectra without concentration. We apply this quantitative
model to the design of tandem and triple junction solar cells, yielding cell designs capable of reaching efficiencies
without concentration of 32% for the best tandem cell and 36% for the best triple junction cell. This demonstrates that
efficiencies within a few percent of world records are realistically achievable without the use of concentrating optics,
with growth methods being developed for multijunction cells combining III-V and Si materials.
An Insight into the Hot Electron Pre-Thermalization
Creators: name: Sieradzki, A.
name: Kuznicki, Z.T.
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; 196-199
description: The ultrafast mechanism of the hot electron thermalization in1D multilayer Si test devices could be
visualized in its earliest stages by the one of the best ways (methods), i.e. time-resolved ultrafast reflectivity. The
investigation allows examining the conditions of the feasibility of device exploiting the impact generation leading to
a secondary free carrier population. The method basis on femtosecond laser pulses exciting and probing the sample
for different wavelengths and energy densities allows enough clear insight into the phenomenon. It is shown that the
impact generation may precede the thermalization in nanoscale conversion structures.
Behaviour Modelling of a Photovoltaic Generator Based on Measurements
Creators: name: Bouchakour, S.
name: Tahour, A.
name: Abdeladim, K.
name: Sayah, H.
name: Hadj Arab, A.
name: Boukhtouche Cherfa, F.
name: Kerkouche, K.
name: Taghezouit, B.
Publisher: name: WIP
Year: 2013
Subjects: PV SYSTEMS
PV System and Grid Integration Aspects

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 4091-4093
description: This paper describes the development of behavioral model of photovoltaic (PV) array generation. The
PV array was modeled using an analytical model, which takes into consideration the electrical characteristics
provided by the manufacturer data sheet, the temperature and the irradiance level. The needed electrical parameters
are re-evaluated in real operational conditions, for better accuracy by carrying outdoor measurements on PV module
(PVM). The assessment of the results was done, both for the static and the dynamic cases, in order to provide an
experimental validation of the PVM model and the PV array performance model. The simulation results have been
achieved using MATLAB/Simulink environment. Results has shown good agreement with experimental data,
whether for the I–V characteristics and for dynamic evolution.
Globally Irreducible Weyl Modules
Creators: name: Garibaldi, Skip
name: Guralnick, Robert M.
name: Nakano, Daniel K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20G05, 20C20

description: In the representation theory of split reductive algebraic groups, it is well known that every Weyl module with minuscule highest weight is irreducible over every field. Also, the adjoint representation of $E_8$ is also irreducible over every field. In this paper, we prove a converse to these statements, as conjectured by Gross: if a Weyl module is irreducible over every field, it must be either one of these, or trivially constructed from one of these.
Echoes of Yesterday: An Exploration of Vintage Postcards
Creators: name: Van De Cruys, Tim
name: Guzmán, Ivania Nadine Donoso
name: Crucifix, Benoît
name: Garrido, Lucia Allende
name: Peiyang Huo
name: Lamllari, Ina
name: Stojevic, Iva
name: Yining Zhu
name: Zhuang, Dawn
Publisher: name: Zenodo
Year: 2023

description: Poster created for the KU Leuven BiblioTech 2023 Hackathon. The team worked on a dataset of over 35,000 old Belgian postcards, creating a website with a search engine based on postcard image clustering, showing the distribution of the postcards through an interactive map, and providing exploratory data analysis and data browsing through themes. The poster sheds light on the methodology used for processing the images and the metadata, the tools used to build the website, and potential for future research on this topic.
Analysis of Light-Induce Degradation on Mono Cast Cells
Creators: name: Wu, Y.C.
name: Chen, M.-Y.
name: Huang, H.-H.
name: Huang, P.-S.
name: Cheng, L.W.
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; 193-195
description: The light-induced degradation (LID) of mono casted silicon solar cell with non-fully mono appearance is investigated. The quantum efficiency (QE) of different etching process and different position are compared. The results reveal that LID of mono casted cells can be found at all wavelength range, which indicate LID has surface and bulk effect. Annealing was applied after light soaked to verify the recoverability. The recovery of long-wavelength range can be related to bulk B-O complex dissociation. The non-recovery of short-wavelength range can be related to surface degradation. Overall the trend of QE degradation and recovery are the same for different conditions, whereas the degrees of electrical properties decline are different.
Abelian duality and propagation of resonance
Creators: name: Denham, Graham
name: Suciu, Alexander I.
name: Yuzvinsky, Sergey
Publisher: name: arXiv
Year: 2015
Subjects: subject: Algebraic Topology (math.AT)
subject: Combinatorics (math.CO)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: Primary: 55N25, Secondary: 13C14, 20F36, 32S22, 55U30, 57M07

description: We explore the relationship between a certain "abelian duality" property of spaces and the propagation properties of their cohomology jump loci. To that end, we develop the analogy between abelian duality spaces and those spaces which possess what we call the "EPY property." The same underlying homological algebra allows us to deduce the propagation of jump loci: in the former case, characteristic varieties propagate, and in the latter, the resonance varieties. We apply the general theory to arrangements of linear and elliptic hyperplanes, as well as toric complexes, right-angled Artin groups, and Bestvina-Brady groups. Our approach brings to the fore the relevance of the Cohen-Macaulay condition in this combinatorial context.
description: 30 pages
Cost Optimization of Cleaning of Dust on Photovoltaic Modules
Creators: name: Qasem, H.
Publisher: name: WIP
Year: 2013
Subjects: PV SYSTEMS
PV System Reliability and Availability

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 4041-4044
description: Dust becomes a major issue in reducing the performance of photovoltaic (PV) systems in the Middle
East and North Africa (MENA) region, and with the availability of high solar radiation, it becomes important to set
up a further investigation to look into minimizing the losses of PV systems due to dust accumulation. With direct
cleaning as the basic and most direct way of minimizing losses, it becomes important to set up a procedure to
optimise the frequency of cleaning, schedule of cleaning and energy losses caused by dust accumulation to the cost
involved in cleaning dust. Therefore, this paper presents an optimised cleaning procedure using the specific yield
calculated from IEC 60891:2009 procedure 2, and then corrected with a dust-correction model. Using a one year
simulation showed a relation where the optimised value is related to the module cleaning frequency by a power law
relation. This was further linked to the cost of cleaning and compared to the cost of energy lost due to dust. The
simulation result showed that for the investigated case, the cost of cleaning the PV modules is economically feasible
if the energy losses due to dust are set at ≥ 7%.
Pemberdayaan Ekonomi Masyarakat Desa Tertinggal melalui Pemanfaatan Iptek di Provinsi Banten
Creators: name: Sururi, Ahmad
Publisher: name: Open Science Framework
Year: 2022

description: This study was designed to map the potential and problems of local resources in improving the rural economy, an understanding of the technology needs for rural economic development and rural economic development strategy through technological approach to poverty alleviation. The method used in this study is a Location Quotient (LQ) to determine whether there is an area of specialization for certain sectors. By LQ analysis intended to look at sectors which are the basis of sectors and sectors not base, then continued into the analysis of SWOT analysis. Results showed that the average index of location quetion most rural areas each having economic potential seed and if it refers to the results of the calculation of average Location quetion (LQ) subsector of agriculture at the top then there are many villages that have criteria for the achievement of the average calculation LQ is greater than one (1) or LQ> 1. Later in this study have also been generated operationally recommendation against the use of science and technology of leading sectors that have been mapped. Artikel ini merupakan post print version yang sudah terbit di jurnal Litbangda, Volume 6 Nomor 1 , Juni 2015
Semiclassical dynamics of Dirac and Weyl particles in rotating coordinates
Creators: name: Dayi, O. F.
name: Kilincarslan, E.
name: Yunt, E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The semiclassical kinetic theory of Dirac particles in the presence of external electromagnetic fields and global rotation is established. To provide the Hamiltonian formulation of Dirac particles a symplectic two-form which is a matrix in spin indices is proposed. The particle number and current densities for the Dirac particles are acquired in the helicity basis. Following a similar procedure, semiclassical kinetic theory of the Weyl particles is accomplished. It is shown that the phase-space dynamics of the Weyl and Dirac particles is directly linked. The anomalous chiral effects due to the external electromagnetic fields and angular velocity of the frame are calculated.
description: Appendix added. Published version
Optimal Boson energy for superconductivity in the Holstein model
Creators: name: Lin, Chungwei
name: Wang, Bingnan
name: Teo, Koon Hoo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We examine the superconducting solution in the Holstein model, where the conduction electrons couple to the dispersionless Boson fields, using the Migdal-Eliashberg theory and Dynamical Mean Field Theory. Although different in numerical values, both methods imply the existence of an optimal Boson energy for superconductivity at a given electron-Boson coupling. This non-monotonous behavior can be understood as an interplay between the polaron and superconducting physics, as the electron-Boson coupling is the origin of the superconductor, but at the same time traps the conduction electrons making the system more insulating. Our calculation provides a simple explanation on the recent experiment on sulfur hydride (H$_2$S), where an optimal pressure for the superconductivity was observed. The validities of both methods are discussed.
description: 5 figures, 11 pages, single column
Computer model calibration with large non-stationary spatial outputs: application to the calibration of a climate model
Creators: name: Chang, Kai-Lan
name: Guillas, Serge
Publisher: name: arXiv
Year: 2016
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Bayesian calibration of computer models tunes unknown input parameters by comparing outputs with observations. For model outputs that are distributed over space, this becomes computationally expensive because of the output size. To overcome this challenge, we employ a basis representation of the model outputs and observations: we match these decompositions to carry out the calibration efficiently. In the second step, we incorporate the non-stationary behaviour, in terms of spatial variations of both variance and correlations, in the calibration. We insert two integrated nested Laplace approximation-stochastic partial differential equation parameters into the calibration. A synthetic example and a climate model illustration highlight the benefits of our approach.
A Review of the Novel Concepts in Photovoltaics through Their Experimental Achievements
Creators: name: Ramiro, I.
name: Martí Vega, A.
name: Antolín, E.
name: Luque, A.
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; 118-122
description: The intermediate band solar cell (IBSC), the multiple exciton generation solar cell (MEGSC) and the
hot carrier solar cell (HCSC) are three novel concepts in photovoltaics which aim to achieve high efficiency devices.
In this paper we assess to what extent their physical principles of operation have been experimentally verified. It is
found that there is experimental evidence supporting the underlying theory for all three.
$q$-Virasoro modular double and 3d partition functions
Creators: name: Nedelin, Anton
name: Nieri, Fabrizio
name: Zabzine, Maxim
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study partition functions of 3d $\mathcal{N}=2$ U(N) gauge theories on compact manifolds which are $S^1$ fibrations over $S^2$. We show that the partition functions are free field correlators of vertex operators and screening charges of the $q$-Virasoro modular double, which we define. The inclusion of supersymmetric Wilson loops in arbitrary representations allows us to show that the generating functions of Wilson loop vacuum expectation values satisfy two SL(2,$\mathbb{Z}$)-related commuting sets of $q$-Virasoro constraints. We generalize our construction to 3d $\mathcal{N}=2$ unitary quiver gauge theories and as an example we give the free boson realization of the ABJ(M) model.
description: v1: 59 pages, 3 figures. v2: corrected few typos, references added. v3: corrected few typos, published version
Statistical Analysis of PV Performance Using Publically Available Data in the Netherlands
Creators: name: Esmeijer, K.B.D.
name: Van Sark, W.G.J.H.M.
Publisher: name: WIP
Year: 2013
Subjects: PV SYSTEMS
PV System Reliability and Availability

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 4024-4027
description: Performance of photovoltaic (PV) systems in the Netherlands, in terms of specific yield, has often been
estimated at 850 kWh/kWp. In this paper, monitoring data from 2011 and 2012 for 500+ systems were analyzed to show
the validity of this estimate. For 2012, for this set of systems, the specific yield is found to be 876 kWh/kWp with a
standard deviation of 139 kWh/kWp, due to variations in tilt and azimuth. Regional variation of specific yield is
correlated to variation of yearly irradiation sums and a difference in 2012 yield is observed of ± 9%.
Modeling and Optimal Operation of Distributed Battery Storage in Low Voltage Grids
Creators: name: Fortenbacher, Philipp
name: Mathieu, Johanna L.
name: Andersson, Göran
Publisher: name: arXiv
Year: 2016
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Due to high power in-feed from photovoltaics, it can be expected that more battery systems will be installed in the distribution grid in near future to mitigate voltage violations and thermal line and transformer overloading. In this paper, we present a two-stage centralized model predictive control scheme for distributed battery storage that consists of a scheduling entity and a real-time control entity. To guarantee secure grid operation, we solve a robust multi-period optimal power flow (OPF) for the scheduling stage that minimizes battery degradation and maximizes photovoltaic utilization subject to grid constraints. The real-time controller solves a real-time OPF taking into account storage allocation profiles from the scheduler, a detailed battery model, and real-time measurements. To reduce the computational complexity of the controllers, we present a linearized OPF that approximates the nonlinear AC-OPF into a linear programming problem. Through a case study, we show, for two different battery technologies, that we can substantially reduce battery degradation when we incorporate a battery degradation model. A further finding is that we can reduce battery losses by 30% by using the detailed battery model in the real-time control stage.
Hot Carrier Solar Cells: Materials with Modulated Phonon Energy for Slowed Carrier Cooling
Creators: name: Conibeer, G.J.
name: Shrestha, S.
name: Huang, S.
name: Patterson, R.
name: Aliberti, P.
name: Xia, H.
name: Feng, Y.
name: Zhang, P.
name: Gupta, N.
name: Smyth, S.
name: Liao, Y.
name: Lin, S.
name: Wang, P.
name: Dai, X.
name: Chung, S.
name: Green, M.A.
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; 123-126
description: The Hot Carrier solar cell reduces carrier thermalisation loss. It relies on slowing the rate of carrier
cooling in the absorber from ps to ns. This is addressed through nanostructures and modulation of phonon
dispersions.
ASASSN-14li: A Model Tidal Disruption Event
Creators: name: Krolik, Julian
name: Piran, Tsvi
name: Svirski, Gilad
name: Cheng, Roseanne M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: ASASSN-14li is a recently-discovered tidal disruption event with an exceptionally rich data-set: spectra and lightcurves in soft X-rays, UV, optical, and radio. To understand its emission properties in all these bands, we have extended our model for post-tidal disruption accretion and photon production to estimate both soft X-ray radiation produced by the prompt accretion phase and synchrotron emission associated with the bow shock driven through an external medium by the unbound tidal debris, as well as optical and UV light. We find that fiducial values of the stellar mass ($1 M_\odot$) and black hole mass ($10^{6.5} M_{\odot}$) yield: quantitative agreement with the optical/UV luminosity, lightcurve, and color temperature; approximate agreement with the somewhat uncertain soft X-ray spectrum and lightcurve; and quantitative agreement with the radio luminosity, spectrum and lightcurve. Equipartition analysis of the radio data implies that the radio-emitting region expands with a constant speed, and its magnitude is comparable to the speed expected for the unbound stellar ejecta. Both facts provide strong support to our model. We find that the disruption event took place in mid-September 2014. Two independent parameters, the magnitude and logarithmic radial gradient of the ambient gas density near the black hole, must be fit to the data to explain the radio emission; their inferred values are comparable to those found near both Sgr A* and the TDE candidate Swift J1644.
description: 28 pages, revised version accepted by Ap. J
The verbal dispute about verbal disputes
Creators: name: Becker, Niklas
Publisher: name: University of St Andrews
Year: 2022
Subjects: subject: BC177.B43
subject: Reasoning
subject: Quarreling--Philosophy
subject: Oral communication--Philosophy

description: Whether a dispute is verbal is important to figure out because it appears to make a huge difference for how the dispute should be resolved. To figure out whether individual disputes are verbal and to figure out how to resolve them, it is crucial to answer what it is for a dispute to be verbal. I defend a pluralistic answer to the question of what verbal disputes are: There are at least two phenomena that equally deserve to be called “verbal dispute”. The first phenomenon is the phenomenon of “talking past each other”, which I analyse in pragmatic terms. The second phenomenon is the phenomenon of “not really disagreeing”, which I analyse in doxastic terms. Both notions of “verbalness” respect certain features, but not others of how the expression “verbal dispute” is used. Furthermore, both notions are important to use since both make a difference for how best to proceed if a dispute is “verbal” in the sense in question. In section 1, I outline why it is important to develop a good analysis of what verbal disputes are. In short, it is important because whether a dispute is verbal appears to make a difference for how to best resolve them. And resolving disputes in philosophy and academic disciplines more broadly is important to make progress. In section 2, I outline the method I use to establish my analyses of verbalness and argue for adopting this method for arguing for (and against) analyses of verbalness. In section 3, I consider a range of phrases typically used to describe what is distinctive about verbal disputes and boil them down to two central markers of verbal disputes: “talking past each other” and “not really disagreeing”. In section 4, I argue that both markers come apart and one may be present without the other, so these two markers of verbalness do in effect express two independent phenomena. In section 5, I consider existing approaches to the question of what verbal disputes are, consider which of the two phenomena these existing analyses are meant to capture and how well they do indeed capture the phenomenon in question. Building on how these existing approaches can be improved, I argue in section 6 for my analyses of pragmatic verbalness (“talking past each other”) and doxastic verbalness (“not really disagreeing”). In section 7, I argue that the dispute about verbal disputes is itself pragmatically and doxastically verbal. In section 8, I reply to a range of potential objections to my account of verbal disputes.
Simulation of Photovoltaic Power Generation in the Atacama Desert of Chile Based on Solar Radiation Data in a Period of Up to 4 Years
Creators: name: Müller-Ost, J.
name: Reiners, N.
name: Blieske, U.
Publisher: name: WIP
Year: 2013
Subjects: PV SYSTEMS
PV System Reliability and Availability

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 3961-3963
description: In 2012, 99% of the power supply of Northern Chile was based on fossil energy sources of which 60%
were imported. Therefore, the energy prices in Chile are the highest in South America. In the beginning of 2012 the
government presented its National Energy Strategy that intends to promote non-Conventional Renewable Energy.
Especially in the Atacama-Desert in northern Chile, there is a high potential for photovoltaic (PV) power plants due to
the high level of solar radiation and clearness index in this region. Weather data with high temporal and spatial resolution
are needed for the analysis of the potential of photovoltaics in northern Chile. This work presents the analysis of weather
data of 9 different weather stations that were installed by the Comisiòn Nacional de Energía (CNE) in cooperation with
the German Gesellschaft für international Zusammenarbeit (GIZ). The weather data were imported in the simulation
software INSEL and used for the simulation of photovoltaic power generation. The levelized cost of energy (LCOE) was
calculated based on the present value method. The results show that grid-connected PV power plants can be implemented
in Atacama Desert with LCOEs of around 5.1 €Cents/kWh.
ESD Characteristics of Solar Array Coupons After Simulated Combined Space Environmental Exposures
Creators: name: Hoang, B.
name: Funderburk, V.V.
name: Wong, F.
name: Gardiner, G.
name: Wright, K.H.
name: Schneider, T.A.
name: Vaughn, J.A.
Publisher: name: WIP
Year: 2013
Subjects: MATERIAL STUDIES, NEW CONCEPTS, ULTRA-HIGH EFFICIENCY AND SPACE TECHNOLOGY
Solar Cells, Modules and PV Systems for Space Applications

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 73-81
description: A set of multi-junction GaAs/Ge solar array test coupons were subjected to a sequence of 5-year
increments of combined space environment exposure tests. The test coupons capture an integrated design intended
for use in a geosynchronous (GEO) space environment. A key component of this test campaign is performing
electrostatic discharge (ESD) tests in the inverted gradient mode. The protocol of the ESD tests is based on the ISO
standard for ESD testing on solar array panels [ISO-11221]. The test schematic in the ISO reference has been
modified with Space System/Loral designed circuitry to better simulate the on-orbit operational conditions of its solar
array design. Part of the modified circuitry is to simulate a solar array panel coverglass flashover discharge. The
ESD tests were performed at the beginning-of-life (BOL) and at each 5-year environment exposure point until endof-
life (EOL) at 15 years. Other space environmental exposure sequence consisted of ultra-violet radiation,
electron/proton particle radiation, thermal cycling, and Xenon ion thruster plume erosion. This paper describes the
ESD test setup and the importance of the electrical test design in simulating the on-orbit operational conditions. Arc
inception voltage results along with ESD test behavior from the BOL condition through the 15th year age condition
are discussed. In addition, results from a Xenon plasma plume exposure test with an EOL coupon under the full ESD
test condition will be discussed.
"Un mondo nuovo a partire dal mondo com’è". Leon Battista Alberti attraverso Giorgio Grassi Recensione a: Giorgio Grassi, Leon Battista Alberti e l'architettura romana,
Creators: name: Pisani, Daniele
Publisher: name: La Rivista di Engramma
Year: 2008
Subjects: Malatesta
Temple
Alberti

description: Review of the book “Leon Battista Alberti e l'architettura romana“ written by Giorgio Grassi and published by Franco Angeli Editori. As a practicing architect, Grassi is led to take his own as a measure for Albertian architecture. For the author, Alberti is first and foremost a master of "coherence and necessity" (De re aedificatoria, III, 1). The rigor of Albertian architecture has, for Grassi, an ethical foundation, which lies in the very way of doing architecture.
UniSAFE: Maynooth University – institutional policy to address gender-based violence
Creators: name: Andreska, Zuzana
name: Huck, Averil
name: Linkova, Marcela
Publisher: name: Zenodo
Year: 2022
Subjects: Gender based-violence
policy framework
gender+
institutional policy

description: UniSAFE has mapped the policies and measures to address and combat GBV in 48 universities and research organisations in 15 European countries. For each institution, the team created Vignettes which present national context, institutional policy, training, role in knowledge production, content of the policy, institutional procedure and implementation of the policy.
Quantum theory cannot consistently describe the use of itself
Creators: name: Frauchiger, Daniela
name: Renner, Renato
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum theory provides an extremely accurate description of fundamental processes in physics. It thus seems likely that the theory is applicable beyond the, mostly microscopic, domain in which it has been tested experimentally. Here we propose a Gedankenexperiment to investigate the question whether quantum theory can, in principle, have universal validity. The idea is that, if the answer was yes, it must be possible to employ quantum theory to model complex systems that include agents who are themselves using quantum theory. Analysing the experiment under this presumption, we find that one agent, upon observing a particular measurement outcome, must conclude that another agent has predicted the opposite outcome with certainty. The agents' conclusions, although all derived within quantum theory, are thus inconsistent. This indicates that quantum theory cannot be extrapolated to complex systems, at least not in a straightforward manner.
description: 11 + 8 pages, 4 figures; substantially rewritten, including change of title; close to published version
Herschel and Planck PhotoVoltaic Assembly In-Flight Behaviour
Creators: name: Ciancetta, E.
name: Gervasio, G.
name: Couzin, P.
name: Fernández Lisbona, E.
name: Zanella, P.
Publisher: name: WIP
Year: 2013
Subjects: MATERIAL STUDIES, NEW CONCEPTS, ULTRA-HIGH EFFICIENCY AND SPACE TECHNOLOGY
Solar Cells, Modules and PV Systems for Space Applications

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 82-87
description: Herschel and Planck are space observatories managed by the European Space Agency. The two
satellites were launched on May 14, 2009 by a single Ariane-5 launcher and operated in two different Lissajous orbits
around the second Lagrangian point (L2), 1.5 million kilometres away from the Earth.
Herschel completed its scientific operation in April 2013 and it was passivated on 17 June 2013; the passivation of
Planck is planned on 23 October 2013.
Herschel spacecraft is 3-axis-stabilized, whereas Planck is a slow spinner. However, the two satellites have been
developed as a single project and the service modules share a large number of characteristics, including the power
system.
This paper will first outline the power system design providing a description of the major design drivers and then will
provide an interesting synthesis of the PhotoVoltaic Assembly (PVA) in-flight monitoring, covering performance at
launch and during major manoeuvres, degradation with life compared to the expected one.
Herschel and Planck are the first ESA astronomical missions operating at L2; analysis of the Photo Voltaic Assembly
performance is interesting in view of the next missions on that orbit like GAIA, James Webb Space Telescope and
Euclid.
Variational optimization with infinite projected entangled-pair states
Creators: name: Corboz, Philippe
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a scheme to perform an iterative variational optimization with infinite projected entangled-pair states (iPEPS), a tensor network ansatz for a two-dimensional wave function in the thermodynamic limit, to compute the ground state of a local Hamiltonian. The method is based on a systematic summation of Hamiltonian contributions using the corner transfer-matrix method. Benchmark results for challenging problems are presented, including the 2D Heisenberg model, the Shastry-Sutherland model, and the t-J model, which show that the variational scheme yields considerably more accurate results than the previously best imaginary time evolution algorithm, with a similar computational cost and with a faster convergence towards the ground state.
description: 11 pages, 9 figures, revised (published) version, correction in Fig. 4
Graph-theoretic strengths of contextuality
Creators: name: de Silva, Nadish
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Cabello-Severini-Winter and Abramsky-Hardy (building on the framework of Abramsky-Brandenburger) both provide classes of Bell and contextuality inequalities for very general experimental scenarios using vastly different mathematical techniques. We review both approaches, carefully detail the links between them, and give simple, graph-theoretic methods for finding inequality-free proofs of nonlocality and contextuality and for finding states exhibiting strong nonlocality and/or contextuality. Finally, we apply these methods to concrete examples in stabilizer quantum mechanics relevant to understanding contextuality as a resource in quantum computation.
description: 13 pages; significantly rewritten
NGCPV: A New Generation of Concentrator Photovoltaic Cells, Modules and Systems
Creators: name: Datas, A.
name: Cristóbal, A.B.
name: Sala, G.
name: Antón, I.
name: Miñano, J.C.
name: Benítez, P.
name: Bett, A.W.
name: Siefer, G.
name: Ekins-Daukes, N.J.
name: Roca, F.
name: Cancro, C.
name: Luque-Heredia, I.
name: Warmuth, W.
name: Baudrit, M.
name: Okada, Y.
name: Sugiyama, M.
name: Hishikawa, Y.
name: Takamoto, T.
name: Araki, K.
name: Fukuyama, A.
name: Nishioka, K.
name: Suzuki, H.
name: Kuze, N.
name: Moriyasu, Y.
name: Kita, T.
name: Kotagiri, A.
name: Kojima, N.
name: Martí Vega, A.
name: Yamaguchi, M.
name: Luque, A.
Publisher: name: WIP
Year: 2013
Subjects: MATERIAL STUDIES, NEW CONCEPTS, ULTRA-HIGH EFFICIENCY AND SPACE TECHNOLOGY
Terrestrial Concentrator Systems

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 88-93
description: Starting on June 2011, NGCPV is the first project funded jointly between the European Commission (EC) and the New Energy and Industrial Technology Development Organization (NEDO) of Japan to research on new generation concentration photovoltaics (CPV). The Project, through a collaborative research between seven European and nine Japanese leading research centers in the field of CPV, aims at lowering the cost of the CPV-produced photovoltaic kWh down to 5 €cents. The main objective of the project is to improve the present concentrator cell, module and system efficiency, as well as developing advanced characterization tools for CPV components and systems. As particular targets, the project aims at achieving a cell efficiency of at least 45% and a CPV module with an efficiency greater than 35%. This paper describes the R&D activities that are being carried out within the NGCPV project and summarizes some of the most relevant results that have already been attained, for instance: the manufacturing of a 44.4% world record efficiency triple junction solar cell (by Sharp Corp.) and the installation of a 50 kWp experimental CPV plant in Spain, which will be used to obtain accurate forecasts of the energy produced at system level.
Comparison between Visual and Thermovision Inspection of PV Field
Creators: name: Strnadel, J.
name: Gvritishvili, R.
name: Vanek, J.
Publisher: name: WIP
Year: 2013
Subjects: PV SYSTEMS
PV System Reliability and Availability

description: 28th European Photovoltaic Solar Energy Conference and Exhibition; 3953-3956
description: This paper deals with comparison between visual inspection and inspection by the thermovision
camera. The focus of measurement was to compare the results of visual inspection and the results of thermovision
inspection like tool to detect the snail trail phenomenon on photovoltaic modules.
Snail trails on photovoltaic modules are a source of enormous concern to the photovoltaic industry as no scientific
reports on the mechanisms producing this global phenomenon were previously available.
The measured was taken from two-year old installation of PV field. PV field is located in Northern Moravia. The
results helps show limitation of automatic detection of nail trail phenomenon on photovoltaic modules by the
thermovision camera.