cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Indoor and Outdoor Characterization of Innovative Colored BIPV Modules for Façade Application
Creators: name: Frontini, F.
name: Bonomo, P.
name: Saretta, E.
name: Weber, T.
name: Berghold, J.
Publisher: name: WIP
Year: 2016
Subjects: PV Applications and Integration
PV in Buildings and the Environment

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 2498-2502
description: The integration of photovoltaic technologies in buildings is considered as promising way to profit
by renewable energies in the built environment, with many advantages. Nevertheless, dealing with PV in architecture
is still a challenge for architects and engineers both because of aesthetic and technical issues. There are at least two
ways to integrate photovoltaic technologies in the building skin design concept: emphasizing the use of solar energy
(high-tech approach) or trying to hide them with the use of a camouflage technology, thanks to the use of colour
filters or painting techniques.
This paper focus on the investigation of the performance behaviour of different coloured modules developed
within the European Project SMART-FLeX. Within the project a special digital technique has been developed to print
the front glass of BIPV modules, offering to the architect many possibility of design. It is clear, that paintings on front
glass will shadow the solar cells, influencing in that way the performance of modules. In order to assess the impact of
this technology on module performance extensive indoor measurements have been done by the authors. Therefore,
prototype modules of different colour and printing degrees were assembled and investigated under standard and
weak-light conditions, electroluminescence tests, spectral responsivity and temperature coefficient measurements.
Outdoor assessment in two different location (Lugano and Berlin) will also provide important information on
modules behaviour in real condition.
Assessing the Potential of Hybrid PV–Battery Systems to Cover HVAC Loads under Southern European Climate Conditions
Creators: name: Solano, J.
name: Olivieri, L.
name: Caamaño-Martín, E.
name: Almeida Dávi, G.
Publisher: name: WIP
Year: 2016
Subjects: PV Applications and Integration
Grid and Energy System Integration

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 2404-2410
description: This paper presents theoretical and experimental works that are being carried out in a grid-connected
residential building prototype available at the Solar Energy Institute. The house is provided with five rooftop
photovoltaic (PV) systems distributed on different planes, a battery energy storage system (BESS) and heating,
ventilation and air-conditioning system (HVAC) based on two air-to-air direct expansion reversible heat pumps.
Thermal loads, HVAC consumption, PV generation and storage system are simulated using different dynamic models
and validated with actual data coming from the monitoring experimental campaign, in order to determine the energy
and economic suitability of using hybrid PV-battery systems in combination with reversible heat pumps and
optimized control strategies to cover HVAC loads in residential buildings under southern European climate
conditions. Results corresponding to the Madrid case-base show that for the building without BESS the selfsufficiency
rate is about 20%, however the implementation of storage systems could duplicate this rate, depending on
the BESS capacity and the PV generator nominal power.
Simultaneous Contact-Rich Grasping and Locomotion via Distributed Optimization Enabling Free-Climbing for Multi-Limbed Robots
Creators: name: Shirai, Yuki
name: Lin, Xuan
name: Schperberg, Alexander
name: Tanaka, Yusuke
name: Kato, Hayato
name: Vichathorn, Varit
name: Hong, Dennis
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: While motion planning of locomotion for legged robots has shown great success, motion planning for legged robots with dexterous multi-finger grasping is not mature yet. We present an efficient motion planning framework for simultaneously solving locomotion (e.g., centroidal dynamics), grasping (e.g., patch contact), and contact (e.g., gait) problems. To accelerate the planning process, we propose distributed optimization frameworks based on Alternating Direction Methods of Multipliers (ADMM) to solve the original large-scale Mixed-Integer NonLinear Programming (MINLP). The resulting frameworks use Mixed-Integer Quadratic Programming (MIQP) to solve contact and NonLinear Programming (NLP) to solve nonlinear dynamics, which are more computationally tractable and less sensitive to parameters. Also, we explicitly enforce patch contact constraints from limit surfaces with micro-spine grippers. We demonstrate our proposed framework in the hardware experiments, showing that the multi-limbed robot is able to realize various motions including free-climbing at a slope angle 45° with a much shorter planning time.
description: Accepted for the 2022 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2022). Hardware implementation videos: https://youtu.be/QLH1shghqQ0
HIKARI: a Positive Energy Building with an Architecturally Integrated PV Facade and a PV Roof-Top System (190 kWp)
Creators: name: Gaiddon, B.
name: Valentin, M.
name: Alfonsi, L.
name: Laquerriere, M.L.
name: Gouranton, G.
name: Corgier, D.
Publisher: name: WIP
Year: 2016
Subjects: PV Applications and Integration
PV in Buildings and the Environment

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 2466-2469
description: In the center of the Lyon-Confluence district in Lyon, France, the public company in charge of the
redevelopment of the area, SPL Lyon-Confluence, launched in 2011 an international design competition for the
selection of a real estate developer to build a positive energy building on a 3.400 m2 piece of land called P plot.
The team Bouygues Immobilier/SLC in association with Kengo Kuma from Japan has been selected by the jury for
the design of a group of 3 buildings called HAKARI with dwellings, offices places and shops for a total floor area of
12.300 m2. In order to build a positive energy building to respect the requirements set by SPL Lyon-Confluence, the
selected team decided to equip this building with 2 kinds of PV systems: a see-through PV facade on the MINAMI
building (21 kWp) and a rooftop PV system on the roof of each of the 3 buildings (168 kWp). The official opening
ceremony of this building took place on Thursday 17 September 2015.
Quantum Annealing: An Overview
Creators: name: Rajak, Atanu
name: Suzuki, Sei
name: Dutta, Amit
name: Chakrabarti, Bikas K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this review, after providing the basic physical concept behind quantum annealing (or adiabatic quantum computation), we present an overview of some recent theoretical as well as experimental developments pointing to the issues which are still debated. With a brief discussion on the fundamental ideas of continuous and discontinuous quantum phase transitions, we discuss the Kibble-Zurek scaling of defect generation following a ramping of a quantum many body system across a quantum critical point. In the process, we discuss associated models, both pure and disordered, and shed light on implementations and some recent applications of the quantum annealing protocols. Furthermore, we discuss the effect of environmental coupling on quantum annealing. Some possible ways to speed up the annealing protocol in closed systems are elaborated upon: We especially focus on the recipes to avoid discontinuous quantum phase transitions occurring in some models where energy gaps vanish exponentially with the system size.
description: Phil.Trans. R. Soc. A 381, 20210417
Tropical Coordinates on the Space of Persistence Barcodes
Creators: name: Verovsek, Sara Kalisnik
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: The aim of applied topology is to use and develop topological methods for applied mathematics, science and engineering. One of the main tools is persistent homology, an adaptation of classical homology, which assigns a barcode, i.e. a collection of intervals, to a finite metric space. Because of the nature of the invariant, barcodes are not well-adapted for use by practitioners in machine learning tasks. We can circumvent this problem by assigning numerical quantities to barcodes and these outputs can then be used as input to standard algorithms. It is the purpose of this paper to identify tropical coordinates on the space of barcodes and prove that they are stable with respect to the bottleneck distance and Wasserstein distances.
Structural adaptive models in financial econometrics
Creators: name: Mihoci, Andrija
Publisher: name: Humboldt-Universität zu Berlin, Wirtschaftswissenschaftliche Fakultät
Year: 2012
Subjects: subject: Vorhersage
subject: Limit Order Book
subject: Multiplicative Error Model
subject: Empirical Pricing Kernel
subject: Forecasting
subject: 330 Wirtschaft
subject: 17 Wirtschaft
subject: QH 430

description: Moderne statistische und ökonometrische Methoden behandeln erfolgreich stilisierte Fakten auf den Finanzmärkten. Die vorgestellten Techniken erstreben die Dynamik von Finanzmarktdaten genauer als traditionelle Ansätze zu verstehen. Wirtschaftliche und finanzielle Vorteile sind erzielbar. Die Ergebnisse werden hier in praktischen Beispielen ausgewertet, die sich vor allem auf die Prognose von Finanzmarktdaten fokussieren. Unsere Anwendungen umfassen: (i) die Modellierung und die Vorhersage des Liquiditätsangebotes, (ii) die Lokalisierung des ’Multiplicative Error Model’ und (iii) die Erbringung von Evidenz für den empirischen Zustandsfaktorparadox über Landern.
description: Modern methods in statistics and econometrics successfully deal with stylized facts observed on financial markets. The presented techniques aim to understand the dynamics of financial market data more accurate than traditional approaches. Economic and financial benefits are achievable. The results are here evaluated in practical examples that mainly focus on forecasting of financial data. Our applications include: (i) modelling and forecasting of liquidity supply, (ii) localizing multiplicative error models and (iii) providing evidence for the empirical pricing kernel paradox across countries.
Evolution of N/O Abundance Ratios and Ionization Parameters from z~0 to 2 Investigated by the Direct Temperature Method
Creators: name: Kojima, Takashi
name: Ouchi, Masami
name: Nakajima, Kimihiko
name: Shibuya, Takatoshi
name: Harikane, Yuichi
name: Ono, Yoshiaki
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present N/O abundance ratios, ionization parameters {$q_{\rm ion}$}, and oxygen abundance O/H for a total of 41 galaxies (11 individual galaxies and a 30-galaxy stack) including {Ly$α$} emitters and Lyman break galaxies at $z\sim 2$, and investigate galaxy evolution from $z\sim 0$ to $2$ in conjunction with 208,529 local SDSS galaxies and 9 green pea galaxies (GPs). In contrast with most of the recent studies, we obtain the N/O ratio, {$q_{\rm ion}$}, and O/H measurements by direct $T_{\rm e}$ methods with {[O\,\textsc{iii}]} $λ$4363 and {O\,\textsc{iii}]} $λ$1665 lines. Based on these reliable measurements, we find that there exist $z\sim 2$ galaxies with an excess of N/O falling beyond the local average of N/O--O/H relation, while the majority of the $z\sim 2$ galaxies have the N/O ratios nearly comparable with $z\sim 0$ galaxies in the N/O--stellar mass relation. Our galaxies place the upper limit of N/O ratio $\log ({\rm N/O})\le -1.26$ on average, suggesting that the N/O ratio evolves, if at all, by $<0.17$ dex. Exploiting our reliable measurements free from the N/O--{$q_{\rm ion}$}--O/H degeneracies, we identify, for the first time, that $z\sim 2$ galaxies with offsets in the BPT diagram indicate either 1) only an N/O excess, 2) only a {$q_{\rm ion}$} excess, or 3) both N/O and {$q_{\rm ion}$} excesses. We argue that the BPT offsets at $z\sim 2$ are not made by one of 1)--3) galaxy populations alone, but the composite of 1)--3) populations. We confirm that these 1)--3) populations also exist at $z\sim 0$, such as GPs and SDSS low-mass and high-SFR galaxies (LMHSs).
description: 22 pages, 13 figures, 6 tables, the data and discussions in the v2/v3 are updated in response to the latest reports from other papers. Accepted for publication in PASJ. In press
Electrical tuning of moiré excitons in MoSe$_2$ bilayers
Creators: name: Hagel, Joakim
name: Brem, Samuel
name: Malic, Ermin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Recent advances in the field of vertically stacked 2D materials have revealed a rich exciton landscape. In particular, it has been demonstrated that out-of-plane electrical fields can be used to tune the spectral position of spatially separated interlayer excitons. Other studies have shown that there is a strong hybridization of exciton states, resulting from the mixing of electronic states in both layers. However, the connection between the twist-angle dependent hybridization and field-induced energy shifts has remained in the dark. Here, we investigate on a microscopic footing the interplay of electrical and twist-angle tuning of moiré excitons in MoSe$_2$ homobilayers. We reveal distinct energy regions in PL spectra that are clearly dominated by either intralayer or interlayer excitons, or even dark excitons. Consequently, we predict twist-angle-dependent critical electrical fields at which the material is being transformed from a direct into an indirect semiconductor. Our work provides new microscopic insights into experimentally accessible knobs to significantly tune the moiré exciton physics in atomically thin nanomaterials.
description: 12 pages, 5 figures
Short-Term Power Fluctuations in Densely Clustered PV-Battery Systems
Creators: name: Barry, J.
name: Munzke, N.
name: Thomas, J.
Publisher: name: WIP
Year: 2016
Subjects: PV Applications and Integration
Grid and Energy System Integration

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 2398-2403
description: Energy storage systems coupled to solar photovoltaic arrays will become a vital pillar in the future energy landscape, both on and off the grid. The high variability of solar power can be overcome with smart technologies and rapid battery response rates. Knowledge of the prevalence (how often they occur) and persistence (how long they last) of photovoltaic power fluctuations allows storage system developers to find the optimal solution to achieve the desired level of smoothness in the resulting power output from the system. In this work power data measured at 1 Hz from the densely clustered arrays of the KIT 1 MWp solar installation are analysed using statistical techniques in order to characterise the variability of single arrays as well as that of the system as a whole. The relationship between correlation and distance is examined in detail using models from the literature, for fluctuation lengths in the range of several seconds and separation distances down to 10 metres. The smoothing that results from decorrelation can be used as an additional mitigation factor in the design of small-scale collections of solar systems, especially in the context of residential and district storage solutions.
Probe of the Anomalous Quartic Couplings with Beam Polarization at the CLIC
Creators: name: Senol, A.
name: Köksal, M.
name: İnan, S. C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have investigated the anomalous quartic couplings defined by the dimension-8 operators in semileptonic decay channel of the $e^{+}e^{-}\rightarrow ν_{e} W^{-} W^{+} \barν_{e}$ process for unpolarized and polarized electron (positron) beam at the Compact Linear Collider. We give the $95\%$ confidence level bounds on anomalous $\frac{f_{S0}}{Λ^{4}}$, $\frac{f_{S1}}{Λ^{4}}$ and $\frac{f_{T0}}{Λ^{4}}$ couplings for various values of the integrated luminosities and center-of-mass energies. The best sensitivities obtained on anomalous $\frac{f_{S0}}{Λ^{4}}$, $\frac{f_{S1}}{Λ^{4}}$ and $\frac{f_{T0}}{Λ^{4}}$ couplings through the process $e^{+}e^{-}\rightarrow ν_{e} W^{-} W^{+} \barν_{e}$ with beam polarization at $\sqrt{s}=3$ TeV and an integrated luminosity of $L_{int}=2000$ fb$^{-1}$ are $[-4.05;\, 3.67]\times 10^{-12}$ GeV$^{-4}$, $[-3.08; \, 2.12]\times 10^{-12}$ GeV$^{-4}$, $[-1.98; \, 0.64]\times 10^{-13}$ GeV$^{-4}$, which show improvement over the current bounds.
description: 8 pages, 7 figures and 8 tables, published version
Disk Polarization From Both Emission and Scattering of Magnetically Aligned Grains: The Case of NGC 1333 IRAS4A1
Creators: name: Yang, Haifeng
name: Li, Zhi-Yun
name: Looney, Leslie W.
name: Cox, Erin G.
name: Tobin, John
name: Stephens, Ian W.
name: Segura-Cox, Dominque M.
name: Harris, Robert J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Dust polarization in millimeter (and centimeter) has been mapped in disks around an increasing number of young stellar objects. It is usually thought to come from emission by magnetically aligned (non-spherical) grains, but can also be produced by dust scattering. We present a semi-analytic theory of disk polarization that includes both the direction emission and scattering, with an emphasis on their relative importance and how they are affected by the disk inclination. For face-on disks, both emission and scattering tend to produce polarization in the radial direction, making them difficult to distinguish, although the scattering-induced polarization can switch to the azimuthal direction if the incident radiation is beamed strongly enough in the radial direction in the disk plane. Disk inclination affects the polarizations from emission and scattering differently, especially on the major axis where, in the edge-on limit, the former vanishes while the latter reaches a polarization fraction as large as 1/3. The polarizations from the two competing mechanisms tend to cancel each other on the major axis, producing two low polarization "holes" (one on each side of the center) under certain conditions. We find tantalizing evidence for at least one such "hole" in NGC1333 IRAS4A1, whose polarization observed at 8 mm on the 100 AU scale is indicative of a pattern dominated by scattering close to the center and by direction emission in the outer region. If true, it would imply not only that a magnetic field exists on the disk scale, but that it is strong enough to align large, possibly mm-sized, grains.
description: 14 pages, 8 figures, accepted by MNRAS
Techno-Economic Optimization of Photovoltaic Plant Layout by Using Design of Experiments Techniques
Creators: name: Ringlstetter, S.N.
name: Haack, L.
name: Dildey, F.
name: Sommer, L.
name: Meyer, R.
Publisher: name: WIP
Year: 2016
Subjects: PV Applications and Integration
Utility-Scale PV

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 2432-2435
description: The conceptual design of utility scale photovoltaic power plants is commonly realized by using
commercial or non-commercial simulation software tools for energy yield calculations.
Systematic techno-economic optimization by variation of several input variables with a reasonable step size can lead
to a very large number of simulation runs. Also more detailed simulation algorithms increase the computational time.
Performance approximation of different plant layouts by applying Design of Experiments (DOE) methods and
multiple linear regression models help to reduce required simulation cases and to identify the optimal plant layout
more efficiently. Instead of step by step variation of all input parameters, only specific parameter configurations
(design points) are simulated, which provides sufficient information for developing accurate regression models for
approximation of the respective annual energy yield and Levelized Cost of Electricity (LCOE). The LCOE is used as
measure for comparison of possible variants and identification of the optimal plant configuration.
High accuracy of the regression models could be achieved and demonstrated in a case study. With only 95 simulation
runs for determining the approximation function, LCOEs of several thousands different layouts have been calculated
with an uncertainty lower than 3%. Computation time has been reduced by a factor of five compared to a direct
reference calculation, which corresponds to saving several hours of worktime.
Essays on stochastic orderings in portfolio selection
Creators: name: Malavasi, Matteo
Publisher: name: Macquarie University
Year: 2023
Subjects: Other education not elsewhere classified

description: Stochastic Ordering represents a relevant approach in portfolio selection for various reasons. Firstly, stochastic ordering is theoretically justified by expected utility theory. Typically, investors are classified according to their attitude towards risk. For each class of investors then, it is possible to define stochastic orderings coherent with their risk preference. Secondly, stochastic ordering is flexible enough to allow different definitions of efficiency suitable for each category of investors. This thesis proposes several applications of stochastic ordering to portfolio selection problems. In the first chapter, an analysis of the relationship between second order stochastic dominance efficient sets and the mean variance efficient frontier is proposed. Not only do the two sets differ under many aspects, but the global minimum variance portfolio and other mean variance efficient portfolios are dominated in the sense of second order stochastic dominance. Based on this fact, the chapter proposes some dominating strategies that are able to outperform the global minimum variance portfolio. In the second chapter, starting from recent findings in the literature, that address the behavior of investors as neither non-satiable, nor risk averse or risk seeking, an extension of the classic definition of stochastic dominance efficiency linked to behavioral finance is given. In particular, investors’ behavior changes according to market conditions. The last part of the chapter presents a methodology, based on estimation function theory, that allows to test for portfolio efficiency with respect to a general stochastic ordering. Both the analysis of efficiency for second order of stochastic dominance and behavioral finance, questions the validity of highly diversified choices. For this reason, this thesis continues the analysis by introducing risk diversification measures, a new class of functional quantifying the amount of idiosyncratic risk diversified among the assets in a portfolio. The mean risk diversification efficient frontier is introduced, along with the concept of mean risk diversification efficiency. The empirical analysis describes the relationship between risk aversion, risk diversification and classic diversification, and shows how risk diversification based strategies perform under periods of financial distress.
Light Stop Mass Limits from Higgs Rate Measurements in the MSSM: Is MSSM Electroweak Baryogenesis Still Alive After All?
Creators: name: Liebler, Stefan
name: Profumo, Stefano
name: Stefaniak, Tim
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We investigate the implications of the Higgs rate measurements from Run 1 of the LHC for the mass of the light scalar top partner (stop) in the Minimal Supersymmetric Standard Model (MSSM). We focus on light stop masses, and we decouple the second, heavy stop and the gluino to the multi-TeV range in order to obtain a Higgs mass of around 125 GeV. We derive lower mass limits for the light stop within various scenarios, taking into account the effects of a possibly light scalar tau partner (stau) or chargino on the Higgs rates, of additional Higgs decays to undetectable new physics, as well as of non-decoupling of the heavy Higgs sector. Under conservative assumptions, the stop can be as light as 123 GeV. Relaxing certain theoretical and experimental constraints, such as vacuum stability and model-dependent bounds on sparticle masses from LEP, we find that the light stop mass can be as light as 116 GeV. Our indirect limits are complementary to direct limits on the light stop mass from collider searches and have important implications for electroweak baryogenesis in the MSSM as a possible explanation for the observed matter-antimatter asymmetry of the Universe.
description: 55 pages, 16 figures, 3 tables; v2: minor changes, matches the published version in JHEP
A New Method for the Benchmarking of Irradiance Predictions
Creators: name: Guérin De Montgareuil, A.
name: Bellemare, L.
name: Blondou, R.
name: David, M.
name: Hedde, T.
name: Lauret, P.
name: Mével, S.
name: Morel, J.-P.
name: Poggi, P.
name: Soubdhan, T.
name: Voyant, C.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
Solar Resource and Forecasting

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 2331-2337
description: In the French overseas departments and in Corsica, insular territories, as well as in Provence, south of France, where the electric grid is weakly interconnected because of the proximity of the Mediterranean Sea and the Alps Mountains, a very high proportion of photovoltaic power will be introduced in the electric grids in the near future. In order to manage the balance between supply and demand of electricity, grid operators ask electricity producers to linearize their production and to announce in advance their energy production plans. The accuracy of these plans depends strongly on the accuracy of the prediction of the solar resource. The article proposes a new method for the benchmarking of irradiance predictions used in this context. It is shown that even for perfect energy predictions, the requirement of energy production plans brings potential costs to energy producers. The new benchmarking method compares the accuracy of the predictions with the accuracy of an ideal prediction made from the linearization of irradiance measurements and with the accuracy of the persistence prediction, which consists in using the irradiance of the current day as predicted irradiance for the next day.
Comparative Life Cycle Assessment of PV Technologies
Creators: name: Dahiya, S.
name: Vogt, T.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
Sustainability and Recycling

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 2365-2369
description: A comparative Life Cycle Assessment (LCA) of ‘Silicon wafer based’ (Single-Si & Multi-Si) and ‘Thinfilm’
(CdTe & CIGS) PV types is conducted to develop a comparative assertion for Global Warming Potential (GWP),
Cumulative Energy Demand (CED), Energy Payback Time (EPBT) and Energy Return on Investment (EROI). Based
on these impacts, the chosen PV types are ranked for their sustainability quotient. The study followed a ‘cradle-to
grave’ approach including the stages of raw material extraction and processing, PV cell & module manufacturing
followed by use and disposal of slanted roof-mounted, grid connected, 3 kWp PV systems operating at 1700
kWh/m2/year of solar irradiation for a lifetime of 30 years. The results indicated that Single-Si PV has the highest
impacts followed by Multi-Si, CIGS and CdTe PV type. The results are also compared to the harmonized outcome
from previous PV LCA studies to reflect the change in impacts with evolving technology and although the
environmental ranking remains unchanged, the findings of this study shows a decrease of 7-43% for GWP, 18-31% for
CED, 30-52% for EPBT & 24-75% for EROI based on PV types. An advanced contribution analysis is further carried
out to determine the relative impacts of individual PV system components and to provide an insight on most impactburdening
value chain processes and input flows with high potential for subjection to ecological optimization.
On the CPT-even Lorentz-breaking extension of the QED
Creators: name: Mariz, T.
name: Maluf, R. V.
name: Nascimento, J. R.
name: Petrov, A. Yu.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we describe the quantum electrodynamics added by Lorentz-violating CPT-even terms in the context of the standard model extension. We focus our attention on the fermion sector, represented by the CPT-even symmetric Lorentz-breaking tensor $c_{μν}$. We adopt a generic form that parametrizes the components of $c_{μν}$ in terms of one four-vector, namely, $c_{μν}=u_μu_ν- ζ\frac{u^2}{4}g_{μν}$. We then generate perturbatively, up to the third order in this tensor, the aether-like term for the gauge field. Finally, we discuss the renormalization scheme for the gauge propagator, by taking into account $c_{μν}$ traceless ($ζ=1)$ and, trivially, $c_{μν}=u_μu_ν$ ($ζ=0$).
description: 19 pages, Preprint of an article submitted for consideration in Int. J. Mod. Phys. A \c{opyright} 2017 [copyright World Scientific Publishing Company] [http://www.worldscientific.com/worldscinet/ijmpa]
Solar PV Resource for Higher Penetration through a Combined Spatial Aggregation with Wind
Creators: name: Bischof-Niemz, T.
name: Mushwana, C.
name: Koopman, S.
Publisher: name: WIP
Year: 2016
Subjects: PV Applications and Integration
Grid and Energy System Integration

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 2427-2431
description: The conventional approach to assess and integrate renewable energy (RE) resource individually has its
own limitations especially in areas where different energy resources get integrated to supply power to the grid. In
South Africa, the Solar PV resource potential is extremely high virtually all over the country, however, solar PV is
integrated into the grid with other energy sources. The other significant RE source in South Africa is wind, therefore
it is important to understand the interaction between wind and solar PV and how these would be reflected in the
power system. The benefits of spatial distribution of renewables are well understood, but the impact of the combined
spatial aggregation of wind and solar PV is central to the design of the future power system in a responsive manner.
A thorough understanding of the combined aggregated spatial effect of these two resources is critical in ensuring that
PV is optimally rolled out in the country. The fact that solar PV has a good yield potential all over the country could
lead to a situation where PV could be developed aggressively with no due regard for the spatial aggregation effects
when it is combined with wind. This could result in suboptimal use of the resource and undesired grid capacity and
stability problems.
Effect of Temperature on Insulation Resistance of Different PV Technology Modules
Creators: name: Gowri, G.
name: Morampudi, M.
name: Kumar Jha, G.
name: Siddiqui, R.
name: Kumar, R.
name: Raghava, S.
name: Lata Panchal, S.
name: Rajput, P.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
PV Cells and Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 2286-2290
description: PV Technologies having same power rating with different configuration are selected for this study.
Insulation Test is performed for 2 minutes at 1000 V on the modules which are kept in environmental chamber. A
Temperature dosage in the increments of 10°C, ranging from 10°C to 80°C is applied on the modules. The insulation
resistance, leakage current, Dielectric Absorption ratio and capacitance readings were noted down at each interval. All
the modules have fulfilled the criteria of IEC 61215, IEC 61646. Theoretically from the Observations it was found that
the insulation resistance decreases with increase in temperature. In addition to that a generalized model of insulation of
PV module in terms of resistance and capacitance was built and simulated.
Preliminary Assessment of Degradation in Field-Aged Multi-Crystalline Silicon PV Modules Installed in Hot-Humid Climate of Mid Ghana
Creators: name: Quansah, D.A.
name: Adaramola, M.S.
name: Takyi, G.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
PV Cells and Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 2295-2298
description: A multicrystalline solar PV installation in Kumasi Ghana, a hot humid climate, was studied for degradation
in key performance characteristics after 18-years of exposure. An outdoor current-voltage (I-V) characteristization of the
ASE-50-PWX-D the various modules was undertaken. The data was then translated to Standard Test Conditions (STC) and
compared with the primary performance characteristics of the modules. The results showed a 0.9% - 1.6% average annual
decline in peak power. Short-circuit current and open circuit voltage declined annually by 0.3%-0.6% and 0.1%-0.2%
respectively. Decline in the fill factor was 0.3% - 1.2% p.a. resulting from 0.7%-1.1% and 0% - 0.8% loss in current and
voltage at peak power. The module had a 10-year warranty and this data shows that it has met and exceeded warranty
requirements.
Cops and Robbers ordinals of cop-win trees
Creators: name: Bonato, Anthony
name: Gordinowicz, Przemysław
name: Hahn, Gena
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: A relational characterization of cop-win graphs was provided by Nowakowski and Winkler in their seminal paper on the game of Cops and Robbers. As a by-product of that characterization, each cop-win graph is assigned a unique ordinal, which we refer to as a CR-ordinal. For finite graphs, CR-ordinals correspond to the length of the game assuming optimal play, with the cop beginning the game in a least favourable initial position. For infinite graphs, however, the possible values of CR-ordinals have not been considered in the literature until the present work. We classify the CR-ordinals of cop-win trees as either a finite ordinal, or those of the form $α+ ω$, where $α$ is a limit ordinal. For general infinite cop-win graphs, we provide an example whose CR-ordinal is not of this form. We finish with some problems on characterizing the CR-ordinals in the general case of cop-win graphs.
Investigating the Spectral Anomaly with Different Reactor Antineutrino Experiments
Creators: name: Buck, Christian
name: Collin, Antoine P.
name: Haser, Julia
name: Lindner, Manfred
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The spectral shape of reactor antineutrinos measured in recent experiments shows anomalies in comparison to neutrino reference spectra. New precision measurements of the reactor neutrino spectra as well as more complete input in nuclear data bases are needed to resolve the observed discrepancies between models and experimental results. This article proposes the combination of experiments at reactors which are highly enriched in ${}^{235}$U with commercial reactors with typically lower enrichment to gain new insights into the origin of the anomalous neutrino spectrum. The presented method clarifies, if the spectral anomaly is either solely or not at all related to the predicted ${}^{235}$U spectrum. Considering the current improvements of the energy scale uncertainty of present-day experiments, a significance of three sigma and above can be reached. As an example, we discuss the option of a direct comparison of the measured shape in the currently running Double Chooz near detector and the upcoming Stereo experiment. A quantitative feasibility study emphasizes that a precise understanding of the energy scale systematics is a crucial prerequisite in recent and next generation experiments investigating the spectral anomaly.
Real multiplication through explicit correspondences
Creators: name: Kumar, Abhinav
name: Mukamel, Ronen E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: Dynamical Systems (math.DS)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: Primary 14-04, 14H40, Secondary 32G15, 14G35

description: We compute equations for real multiplication on the divisor classes of genus two curves via algebraic correspondences. We do so by implementing van Wamelen's method for computing equations for endomorphisms of Jacobians on examples drawn from the algebraic models for Hilbert modular surfaces computed by Elkies and Kumar. We also compute a correspondence over the universal family for the Hilbert modular surface of discriminant 5 and use our equations to prove a conjecture of A. Wright on dynamics over the moduli space of Riemann surfaces.
description: 15 pages, to be presented at ANTS XII
Influence of Lightning Strikes on Photovoltaic Modules Properies
Creators: name: Naxakis, I.
name: Perraki, V.
name: Pyrgioti, E.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
PV Cells and Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 2282-2285
description: The objective of this work is to present how modules react in case of lightning strikes and overvoltages.
The experimental process included the application of impulse voltages within the limits specified by the standards as
well as, beyond these limits After each impulse voltage stress, the properties of the stressed photovoltaic module were
compared with those of one with identical characteristics unstressed module in order to evaluate possible modifications
in the stressed module properties. The measurements were gathered with the use of a PVPM power measuring device.
The conclusions were extracted after completion of an extensive series of tests. The results confirmed that, after the
completion of the tests, the tested module had not undergone power degradation, had not shown any evidence of surface
defects and continued to operate reliably.
Supplementary document for Axial scanning of dual focus to improve light sheet microscopy - 6004230.pdf
Creators: name: Dibaji, Hassan
name: Prince, Md. Nasful Huda
name: Yi, Yating
name: zhao, Hu
name: Chakraborty, Tonmoy
Publisher: name: Optica Publishing Group
Year: 2022
Subjects: Uncategorized

description: supplementary document
An Experimental Evaluation of Regret-Based Econometrics
Creators: name: Nisan, Noam
name: Noti, Gali
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: Using data obtained in a controlled ad-auction experiment that we ran, we evaluate the regret-based approach to econometrics that was recently suggested by Nekipelov, Syrgkanis, and Tardos (EC 2015). We found that despite the weak regret-based assumptions, the results were (at least) as accurate as those obtained using classic equilibrium-based assumptions. En route we studied to what extent humans actually minimize regret in our ad auction, and found a significant difference between the "high types" (players with a high valuation) who indeed rationally minimized regret and the "low types" who significantly overbid. We suggest that correcting for these biases and adjusting the regret-based econometric method may improve the accuracy of estimated values.
description: WWW 2017, April 3--7, 2017, Perth, Australia
New Cross-Linking Assistant for Encapsulating Materials of EVA
Creators: name: Kawamura, Y.
name: Yamaura, M.
name: Asao, S.
name: Shirasawa, K.
name: Takato, H.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
PV Cells and Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 2304-2306
description: Potential Induced Degradation (PID) occurs at mega solar power plants and is a serious problem. The
mainstream approach to PID prevention is to improve anti-reflection coating to change Si/N ratios. We, on the other
hand, suggest prevention with the encapsulating material. We developed the cross-linking assistant
“TENASHIELD®” which improves volume resistivity of the EVA (ethylene vinyl acetate) film. Volume resistivity of
the test film is more than ten times higher than EVA film containing conventional cross-linking assistants. The power
output of modules equipped with EVA film containing TENASHIELD® didn’t decrease as our PID testing showed.
TENASHIELD® provided superior PID prevention to EVA film. We infer that TENASHIELD® reduces the
formation of voids and conductive passes when EVA film is applied in thermal cross-linking. We assume that a
migration of Na ions was prevented, and PID was reduced. Conventional anti-reflection coating is effective enough
for photo-voltaic cells if TENASHIELD® is used. Cost of this method may be much lower than other PID prevention
methods. Thus, TENASHIELD® may contribute to the further development of mega solar power plants.
Long-Exposure NuSTAR Constraints on Decaying Dark Matter in the Galactic Halo
Creators: name: Roach, Brandon M.
name: Rossland, Steven
name: Ng, Kenny C. Y.
name: Perez, Kerstin
name: Beacom, John F.
name: Grefenstette, Brian W.
name: Horiuchi, Shunsaku
name: Krivonos, Roman
name: Wik, Daniel R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present two complementary NuSTAR x-ray searches for keV-scale dark matter decaying to mono-energetic photons in the Milky Way halo. In the first, we utilize the known intensity pattern of unfocused stray light across the detector planes -- the dominant source of photons from diffuse sources -- to separate astrophysical emission from internal instrument backgrounds using ${\sim}$7-Ms/detector deep blank-sky exposures. In the second, we present an updated parametric model of the full NuSTAR instrument background, allowing us to leverage the statistical power of an independent ${\sim}$20-Ms/detector stacked exposures spread across the sky. Finding no evidence of anomalous x-ray lines using either method, we set limits on the active-sterile mixing angle $\sin^2(2θ)$ for sterile-neutrino masses 6--40 keV. The first key result is that we strongly disfavor a ${\sim}$7-keV sterile neutrino decaying into a 3.5-keV photon. The second is that we derive leading limits on sterile neutrinos with masses ${\sim}$15--18 keV and ${\sim}$25--40 keV, reaching or extending below the Big Bang Nucleosynthesis limit. In combination with previous results, the parameter space for the Neutrino Minimal Standard Model ($ν$MSM) is now nearly closed.
description: Minor changes to text/references to reflect published version, conclusions unchanged
The Role of Vector Boson Fusion in the Production of Heavy Vector Triplets at the LHC and HL-LHC
Creators: name: Baker, Michael J.
name: Martonhelyi, Timothy
name: Thamm, Andrea
name: Torre, Riccardo
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We clarify the role of vector boson fusion (VBF) in the production of heavy vector triplets at the LHC and the HL-LHC. We point out that the presence of VBF production leads to an unavoidable rate of Drell-Yan (DY) production and highlight the subtle interplay between the falling parton luminosities and the increasing importance of VBF production as the heavy vector mass increases. We discuss current LHC searches and HL-LHC projections in di-boson and di-lepton final states and demonstrate that VBF production outperforms DY production for resonance masses above 1 TeV in certain regions of the parameter space. We define two benchmark parameter points which provide competitive production rates in vector boson fusion.
description: 17 pages, 7 figures, 1 table; v2: matches published version
Single Image Restoration for Participating Media Based on Prior Fusion
Creators: name: Gaya, Joel D. O.
name: Codevilla, Felipe
name: Duarte, Amanda C.
name: Drews-Jr, Paulo L.
name: Botelho, Silvia S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This paper describes a method to restore degraded images captured in a participating media -- fog, turbid water, sand storm, etc. Differently from the related work that only deal with a medium, we obtain generality by using an image formation model and a fusion of new image priors. The model considers the image color variation produced by the medium. The proposed restoration method is based on the fusion of these priors and supported by statistics collected on images acquired in both non-participating and participating media. The key of the method is to fuse two complementary measures --- local contrast and color data. The obtained results on underwater and foggy images demonstrate the capabilities of the proposed method. Moreover, we evaluated our method using a special dataset for which a ground-truth image is available.
description: This paper is under consideration at Pattern Recognition Letters
Intercomparison of PTB and ESTI Spectroradiometers Using Simulated and Natural Sunlight
Creators: name: Kröger, I.
name: Galleano, R.
name: Plag, F.
name: Müllejans, H.
name: Winter, S.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
PV Cells and Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 2230-2233
description: JRC ESTI and PTB performed a comparison of spectral irradiance measurements on various light
sources at the JRC premises. The measured sources included four standard lamps (two calibrated by PTB and two
calibrated by NPL), global natural sunlight at clear sky conditions, a steady-state xenon-halogen solar simulator for
solar cell calibration (Wacom) and a steady-state xenon large area solar simulator (Apollo). The PTB system is
composed of three compact array spectroradiometers (CAS) equipped with Si, InGaAs, and extended range InGaAs
detectors, respectively, in order to cover the wavelength range from 250 to 2150 nm. The JRC-ESTI rotating grating
spectroradiometer is composed by a single stage monochromator and a Si-PbS sandwich detector in order to cover a
wavelength range from 300 to 2500 nm. All instruments were calibrated in house by the respective owner institution
using respective procedures and traceability chains. The measured spectra will be compared and deviations will be
discussed with respect to the given uncertainties. Finally, exemplary spectral mismatch calculations will be shown in
order to evaluate the impact of the deviations on PV device calibration.