cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Gravitational wave production from the decay of the Standard Model Higgs field after inflation
Creators: name: Figueroa, Daniel G.
name: García-Bellido, Juan
name: Torrentí, Francisco
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: During or towards the end of inflation, the Standard Model (SM) Higgs forms a condensate with a large amplitude. Following inflation, the condensate oscillates, decaying non-perturbatively into the rest of the SM species. The resulting out-of-equilibrium dynamics converts a fraction of the energy available into gravitational waves (GW). We study this process using classical lattice simulations in an expanding box, following the energetically dominant electroweak gauge bosons $W^\pm$ and $Z$. We characterize the GW spectrum as a function of the running couplings, Higgs initial amplitude, and post-inflationary expansion rate. As long as the SM is decoupled from the inflationary sector, the generation of this background is universally expected, independently of the nature of inflation. Our study demonstrates the efficiency of GW emission by gauge fields undergoing parametric resonance. The initial energy of the Higgs condensate represents however, only a tiny fraction of the inflationary energy. Consequently, the resulting background is very suppressed, with an amplitude $h^2 Ω_{\rm GW}^{(o)} \lesssim 10^{-29}$ today. The amplitude can be boosted to $h^2 Ω_{\rm GW}^{(o)} \lesssim 10^{-16}$, if following inflation the universe undergoes a kination-domination stage; however the background is shifted in this case to high frequencies $f_p \lesssim 10^{11} {\rm Hz}$. In all cases the signal is out of the range of current or planned GW detectors. This background will therefore remain, most likely, as a curiosity of the SM.
description: 16 pages, 6 figures. Minor changes to match version published in PRD
Developing Deep Learning Algorithms for Inferring Upstream Separatrix Density at JET
Creators: name: Kit, A.
name: Jaervinen, A.
name: Wiesen, S.
name: Poels, Y.
name: Frassinetti, L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Predictive and real-time inference capability for the upstream separatrix electron density, $n_\text{e, sep}$, is essential for design and control of core-edge integrated plasma scenarios. In this study, both supervised and semi-supervised machine learning algorithms are explored to establish direct mapping as well as indirect compressed representation of the pedestal profiles for predictions and inference of $n_{\text{e, sep}}$. Based on the EUROfusion pedestal database for JET, a tabular dataset was created, consisting of machine parameters, fraction of ELM cycle, high resolution Thomson scattering profiles of electron density and temperature, and $n_{\text{e, sep}}$ for 608 JET shots. Using the tabular dataset, the direct mapping approach provides a mapping of machine parameters and ELM percentage to $n_{\text{e, sep}}$. Through representation learning, a compressed representation of the experimental pedestal electron density and temperature profiles is established. By conditioning the representation with machine control parameters, a probabilistic generative predictive model is established. For prediction, the machine parameters can be used to establish a conditional distribution of the compressed pedestal profiles, and the decoder that is trained as part of the algorithm can be used to decode the compressed representation back to full pedestal profiles. Although, in this work, a proof-of-principle for predicting and inferring $n_{\text{e, sep}}$ is given, such a representation learning can be used also for many other applications as the full pedestal profile is predicted. An implementation of this work can be found at https://github.com/fusionby2030/moxie.
description: 6 pages, 5 figures, accepted contribution to the 25th International Conference on Plasma Surface Interaction in Controlled Fusion Devices(PSI-25)
Computational Modelling of Plasticity-Led Evolution
Creators: name: Ng, Eden Tian Hwa
name: Kinjo, Akira R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences

description: Plasticity-led evolution is a form of evolution where a change in the environment induces novel traits via phenotypic plasticity, after which the novel traits are genetically accommodated over generations under the novel environment. This mode of evolution is expected to resolve the problem of gradualism (i.e., evolution by the slow accumulation of mutations that induce phenotypic variation) implied by the Modern Evolutionary Synthesis, in the face of a large environmental change. While experimental works are essential for validating that plasticity-led evolution indeed happened, we need computational models to gain insight into its underlying mechanisms and make qualitative predictions. Such computational models should include the developmental process and gene-environment interactions in addition to genetics and natural selection. We point out that gene regulatory network models can incorporate all the above notions. In this review, we highlight results from computational modelling of gene regulatory networks that consolidate the criteria of plasticity-led evolution. Since gene regulatory networks are mathematically equivalent to artificial recurrent neural networks, we also discuss their analogies and discrepancies, which may help further understand the mechanisms underlying plasticity-led evolution.
description: 20 pages, 2 tables, 1 box
CSDN: Cross-modal Shape-transfer Dual-refinement Network for Point Cloud Completion
Creators: name: Zhu, Zhe
name: Nan, Liangliang
name: Xie, Haoran
name: Chen, Honghua
name: Wei, Mingqiang
name: Wang, Jun
name: Qin, Jing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: How will you repair a physical object with some missings? You may imagine its original shape from previously captured images, recover its overall (global) but coarse shape first, and then refine its local details. We are motivated to imitate the physical repair procedure to address point cloud completion. To this end, we propose a cross-modal shape-transfer dual-refinement network (termed CSDN), a coarse-to-fine paradigm with images of full-cycle participation, for quality point cloud completion. CSDN mainly consists of "shape fusion" and "dual-refinement" modules to tackle the cross-modal challenge. The first module transfers the intrinsic shape characteristics from single images to guide the geometry generation of the missing regions of point clouds, in which we propose IPAdaIN to embed the global features of both the image and the partial point cloud into completion. The second module refines the coarse output by adjusting the positions of the generated points, where the local refinement unit exploits the geometric relation between the novel and the input points by graph convolution, and the global constraint unit utilizes the input image to fine-tune the generated offset. Different from most existing approaches, CSDN not only explores the complementary information from images but also effectively exploits cross-modal data in the whole coarse-to-fine completion procedure. Experimental results indicate that CSDN performs favorably against ten competitors on the cross-modal benchmark.
A note on homogeneous ideals of polarized abelian surfaces
Creators: name: Agostini, Daniele
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: Gross and Popescu conjectured that the homogeneous ideal of an embedded $(1,d)$-polarized abelian surface is generated by quadrics and cubics for $d\geq 9$. We prove this using the projective normality of the embedding. It follows that the homogeneous ideal of an abelian surface embedded by a complete linear system is generated by quadrics and cubics, with three exceptions.
description: 5 pages; v3: journal version
Emergent dark energy via decoherence in quantum interactions
Creators: name: Altamirano, Natacha
name: Corona-Ugalde, Paulina
name: Khosla, Kiran
name: Mann, Robert B.
name: Milburn, Gerard
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we consider a recent proposal in which gravitational interactions are mediated via classical information and apply it to a relativistic context. We study a toy model of a quantized Friedman-Robertson-Walker (FRW) universe with the assumption that any test particles must feel a classical metric. We show that such a model results in decoherence in the FRW state that manifests itself as a dark energy fluid that fills the spacetime. Analysis of the resulting fluid, shows the equation of state asymptotically oscillates around the value $w=-1/3$, regardless of the spatial curvature, which provides the bound between accelerating and decelerating expanding FRW cosmologies. Motivated by quantum-classical interactions this model is yet another example of theories with violation of energy-momentum conservation whose signature could have significant consequences for the observable universe.
description: 22 pages, 5 figures. Updated version and references
THE HOTCHPOTCH OF THE INTERNET GOVERNANCE PARADIGM
Creators: name: (نوښت), Nawisht
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 480310
subject: Public international law

description: The question of "Who Owns the Internet?" uncovers a complex reality: the internet operates as a decentralized network governed by a web of agreements among governments, private corporations, and international bodies, with no single controlling entity. This decentralized nature presents challenges in harmonizing laws and standards across jurisdictions. While major private companies, including Tier 1 ISPs and tech giants, manage significant infrastructure and data traffic, governments and organizations like ICANN play crucial roles in regulation and standard-setting. Aligning international regulations with local practices is essential due to the internet's borderless nature. Key challenges include cybersecurity, data privacy, and intellectual property, which complicate efforts to develop cohesive legal frameworks that support a global digital economy while respecting national sovereignty. The concept of internet access as a fundamental human right has gained prominence, with international declarations and national frameworks in countries such as Costa Rica, Estonia, and Finland recognizing its importance for freedoms like speech and education. However, debates continue over whether internet access should be classified as a fundamental right, with critics concerned about practical implications and governmental burdens. Proponents argue that in the digital age, such access is vital for exercising human rights and fostering equitable development. This ongoing discourse highlights the need for adaptable legal frameworks to manage evolving digital challenges.
Effect of Change in Spectral Transmittance due to Dust on CdTe and Mono Crystalline Silicon Modules
Creators: name: Rai, S.
name: Bora, B.
name: Sastry, O.S.
name: Singh, R.
name: Bangar, M.
name: Dahiya, R.
name: Kumar Jha, G.
name: Khadka, T.R.
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; 1871-1873
description: This paper investigates the effect of dust on transmitted spectrum in terms of APE and MMF. The effect on
spectral transmittance due to dust accumulated at different tilt angles has also been studied. Maximum effect is found to be
for the 130 tilt, which is latitude- 150(280-150=130). Two SPV modules each representing crystalline (Mono) and thin film
(CdTe) are used in the study. It has been found that the spectral mismatch factor increases rapidly with the concentration of
dust. The measured data showed a decrease in transmittance at different wavelengths. The MMF gain increase in CdTe as
compared to monocrystalline module which enhance the absorbance spectrum more efficiently but the lower tilt is mostly
effected due to high concentration of dust and decrease of transmittance.
Experimental realisations of the fractional Schrödinger equation in the temporal domain
Creators: name: Liu, Shilong
name: Zhang, Yingwen
name: Malomed, Boris A.
name: Karimi, Ebrahim
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The fractional Schrödinger equation (FSE) -- a natural extension of the standard Schrödinger equation -- is the basis of fractional quantum mechanics. It can be obtained by replacing the kinetic-energy operator with a fractional derivative. Here, we report the experimental realisation of an optical FSE for femtosecond laser pulses in the temporal domain. Programmable holograms and the single-shot measurement technique are respectively used to emulate a \textit{Lévy waveguide} and to reconstruct the amplitude and phase of the pulses. Varying the Lévy index of the FSE and the initial pulse, the temporal dynamics is observed in diverse forms, including solitary, splitting and merging pulses, double Airy modes, and ``rain-like'' multi-pulse patterns. Furthermore, the transmission of input pulses carrying a fractional phase exhibits a ``fractional-phase protection'' effect through a regular (non-fractional) material. The experimentally generated fractional time-domain pulses offer the potential for designing optical signal-processing schemes.
description: to be published in Nature Communications
Opportunities and Limitations of a Disciplinary Repository Using the Example MO|RE Data (eResearch Infrastructure for Motor Research Data)
Creators: name: Klemm, Katja
name: Kron, Hannah
name: Eberhardt, Tanja
name: Woll, Alexander
name: Bös, Klaus
name: Niessner, Claudia
Publisher: name: Zenodo
Year: 2023
Subjects: Sports science
open data
motor tests
repository

description: Two funding periods by the German Research Foundation have resulted in the first disciplinary repository for motor activity research data in sports science - MO|RE data. MO|RE data is aimed at sport scientists, researchers in related disciplines and practitioners such as teachers and educators who also work with or generate human motor performance test data. It has five main functions: publishing, storing, searching, citing and mapping. There are still some limitations and untapped opportunities. Opportunities include international expansion. Limitations include the difficulty of linking health and human performance test data due to data protection laws. The sharing of sensitive data is not possible with the current concept and requires further solutions such as remote access or workstations for visiting researchers. In the future, these datasets need to be considered in order to meet the needs of research data management in sport science. Overall, there is a need for further development and optimisation of the MO|RE data repository to maximise its potential and ensure that it meets the evolving needs of researchers in the field.
An Investigation of Factors Contributing to Potential-Induced Degradation (PID) and Its Countermeasures
Creators: name: Wang, X.-S.
name: Wan, S.
name: Fu, A.
name: Xing, 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; 1892-1897
description: This paper introduce the Potential induced degradation (PID) phenomenon,
analyzes the PID forming mechanism, studies factors contributing to PID: temperature of
the environment, relative humidity and differences in voltage potential between the solar
cells in the PV module and the frame. Based on our studies, we have developed solutions
designed in cell level, module level and system level to prevent PID.
Impedance Characterization of PV Modules in Outdoor Conditions
Creators: name: Oprea, M.I.
name: Spataru, S.V.
name: Sera, D.
name: Thorsteinsson, S.
name: Poulsen, P.
name: Andersen, A.R.
name: Basu, R.
name: Frederiksen, K.H.B.
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; 1849-1853
description: Impedance spectroscopy (IS) has been used for laboratory characterizations of photovoltaic (PV)
technologies under well controlled conditions. This work applies IS for outdoor characterization of PV panels, in
order to observe the effect of ambient conditions on the PV impedance spectrum, and further construct an impedance
model that can link environmental changes to the model’s parameters. To achieve this, a setup has been developed for
long-term impedance spectra monitoring synchronized with accurate irradiance and temperature data. Preliminary
results show clear correlation between the determined parameters and irradiance conditions.
Recycling of Broken Si Based Structures and Solar Cells
Creators: name: Syvertsen, M.
name: Ryningen, B.
name: Di Sabatino, M.
name: Palitzsch, W.
name: Möller, H.J.
name: Audoin, C.
name: Sérasset, M.
name: Pelletier, D.
name: Rakotoniaina, J.P.
name: Diéguez, J.
name: Souto, A.
name: Denafas, J.
name: Petreniene, L.
name: Pranaitis, M.
name: Cyras, V.
name: Zolubas, R.
name: Ulyashin, A.
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; 1768-1774
description: This paper presents works where broken solar cell structures early in the PV production process chain as
well as broken finished solar cells have been recycled into new Si feedstock through demetallization step, purification and
directional solidification. The paper discuss two different routes for removal of diffusion layers and anti-reflection coating
(ARC). It also presents characterizations of ingots produced with the Si-feedstock from the two routes by directional solidification.
Hierarchical Bayesian inference of galaxy redshift distributions from photometric surveys
Creators: name: Leistedt, Boris
name: Mortlock, Daniel J.
name: Peiris, Hiranya V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Accurately characterizing the redshift distributions of galaxies is essential for analysing deep photometric surveys and testing cosmological models. We present a technique to simultaneously infer redshift distributions and individual redshifts from photometric galaxy catalogues. Our model constructs a piecewise constant representation (effectively a histogram) of the distribution of galaxy types and redshifts, the parameters of which are efficiently inferred from noisy photometric flux measurements. This approach can be seen as a generalization of template-fitting photometric redshift methods and relies on a library of spectral templates to relate the photometric fluxes of individual galaxies to their redshifts. We illustrate this technique on simulated galaxy survey data, and demonstrate that it delivers correct posterior distributions on the underlying type and redshift distributions, as well as on the individual types and redshifts of galaxies. We show that even with uninformative priors, large photometric errors and parameter degeneracies, the redshift and type distributions can be recovered robustly thanks to the hierarchical nature of the model, which is not possible with common photometric redshift estimation techniques. As a result, redshift uncertainties can be fully propagated in cosmological analyses for the first time, fulfilling an essential requirement for the current and future generations of surveys.
description: 10 pages, matches version accepted in MNRAS, including new appendix describing the effect of Bayesian shrinkage in a simplified setting
Giulia Farnese come Madonna, in un dipinto di Pinturicchio per Alessandro VI Borgia. Iconografia ‘nuziale’ nella pittura del XVI secolo
Creators: name: Bertelli, Sergio
Publisher: name: La Rivista di Engramma
Year: 2007
Subjects: Nuptial Iconography
Pinturicchio
Giulia Farnese

description: Through a sequence of iconographic evidences, the essay aims to support the thesis according to which commissioning a double portrait of the bride was a common custom among newlyweds in the sixteenth century: the woman used to be depicted firstly in her wedding gown and then in her nudity.
FRELP 2 Project - Full Recovery End of Life Photovoltaic
Creators: name: Ercole, P.
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; 1775-1783
description: The abstract has been changed and the presentation also because SASIL believed to enhance the
delegate attention on the main critical phases of its FRELP process:
1. Glass detachment,
2. Organic combustion and heat recovery,
3. Original process for pure useful metals (Ag, Cu) recovery by means of HNO3 leaching using a minimal excess.
The reason of this change is to update the Conference delegates on the SASIL jobs done in the last 15 months after
the shortage of PV end of life PV modules based on silicon technology.
The presented results need, in the future, some experimental confirmation but the tests already done are promising.
Understanding Dynamics in Coarse-Grained Models: II. Coarse-Grained Diffusion Modeled Using Hard Sphere Theory
Creators: name: Jin, Jaehyeok
name: Schweizer, Kenneth S.
name: Voth, Gregory A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The first paper of this series [J. Chem. Phys. 158, 034103 (2023)] demonstrated that excess entropy scaling holds for both fine-grained and corresponding coarse-grained (CG) systems. Despite its universality, a more exact determination of the scaling relationship was not possible due to the semi-empirical nature. In this second paper, an analytical excess entropy scaling relation is derived for bottom-up CG systems. At the single-site CG resolution, effective hard sphere systems are constructed that yield near-identical dynamical properties as the target CG systems by taking advantage of how hard sphere dynamics and excess entropy can be analytically expressed in terms of the liquid packing fraction. Inspired by classical equilibrium perturbation theories and recent advances in constructing hard sphere models for predicting activated dynamics of supercooled liquids, we propose a new approach for understanding the diffusion of molecular liquids in the normal regime using hard sphere reference fluids. The proposed "fluctuation matching" is designed to have the same amplitude of long wavelength density fluctuations (dimensionless compressibility) as the CG system. Utilizing the Enskog theory to derive an expression for hard sphere diffusion coefficients, a bridge between the CG dynamics and excess entropy is then established. The CG diffusion coefficient can be roughly estimated using various equations of the state, and an accurate prediction of accelerated CG dynamics at different temperatures is also possible in advance of running any CG simulation. By introducing another layer of coarsening, these findings provide a more rigorous method to assess excess entropy scaling and understand the accelerated CG dynamics of molecular fluids.
description: 34 pages, 4 figures
The kinematics of globular clusters systems in the outer halos of the Aquarius simulations
Creators: name: Veljanoski, Jovan
name: Helmi, Amina
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Stellar halos and globular cluster (GC) systems contain valuable information regarding the assembly history of their host galaxies. Motivated by the detection of a significant rotation signal in the outer halo GC system of M31, we investigate the likelihood of detecting such a rotation signal in projection, using cosmological simulations. To this end we select subsets of tagged particles in the halos of the Aquarius simulations to represent mock GC systems, and analyse their kinematics. We find that GC systems can exhibit a non-negligible rotation signal provided the associated stellar halo also has a net angular momentum. The ability to detect this rotation signal is highly dependent on the viewing perspective, and the probability of seeing a signal larger than that measured in M31 ranges from 10% to 90% for the different halos in the Aquarius suite. High values are found from a perspective such that the projected angular momentum of the GC system is within 40 deg of the rotation axis determined via the projected positions and line-of-sight velocities of the GCs. Furthermore, the true 3D angular momentum of the outer stellar halo is relatively well aligned, within 35 deg, with that of the mock GC systems. We argue that the net angular momentum in the mock GC systems arises naturally when the majority of the material is accreted from a preferred direction, namely along the dominant dark matter filament of the large-scale structure that the halos are embedded in. This, together with the favourable edge-on view of M31's disk suggests that it is not a coincidence that a large rotation signal has been measured for its outer halo GC system.
description: 18 pages, 13 figures, 1 table. Accepted by Astronomy & Astrophysics
Weather Sensitivity Analyses in Layout Planning
Creators: name: Bischoff, M.
name: Bamberger, J.
name: Fleuren, T.
name: Plociennik, K.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
Operation of PV Systems

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1793-1795
description: PVplanet is a planning software for large-scale ground-mounted photovoltaic power plants, developed
by Siemens AG in cooperation with Fraunhofer ITWM. The software integrates layout planning, yield calculation,
and financial calculations. Several hundred layout variants are automatically generated by the software. For each
variant, the energy output and financial objectives are calculated. With this information, the planner obtains an
overview on the planning possibilities and avoids trial-and-error planning iterations. With PVplanet, the time for
planning layouts can be drastically reduced, whereas the quality of the results increases. One of the most recent
developments is a weather sensitivity analysis where, based on multiple different weather data sets for the project
site, the impact of weather variations on technical objectives such as energy output and performance ratio (PR) and
on financial objectives such as levelized costs of energy (LCoE), net present value (NPV), and internal rate of return
(IRR) is evaluated. Thus, EPCs can quantify the risk of attaining their performance ratio guarantee, and investors can
evaluate the impact of weather variations on their business case.
Well-balanced fifth-order finite difference Hermite WENO scheme for the shallow water equations
Creators: name: Zhao, Zhuang
name: Zhang, Min
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this paper, we propose a well-balanced fifth-order finite difference Hermite WENO (HWENO) scheme for the shallow water equations with non-flat bottom topography in pre-balanced form. For achieving the well-balance property, we adopt the similar idea of WENO-XS scheme [Xing and Shu, J. Comput. Phys., 208 (2005), 206-227.] to balance the flux gradients and the source terms. The fluxes in the original equation are reconstructed by the nonlinear HWENO reconstructions while other fluxes in the derivative equations are approximated by the high-degree polynomials directly. And an HWENO limiter is applied for the derivatives of equilibrium variables in time discretization step to control spurious oscillations which maintains the well-balance property. Instead of using a five-point stencil in the same fifth-order WENO-XS scheme, the proposed HWENO scheme only needs a compact three-point stencil in the reconstruction. Various benchmark examples in one and two dimensions are presented to show the HWENO scheme is fifth-order accuracy, preserves steady-state solution, has better resolution, is more accurate and efficient, and is essentially non-oscillatory.
description: 24 pages, 11 figures
Outdoor Electroluminescence Imaging of Crystalline Photovoltaic Modules: Comparative Study between Manual Ground-Level Inspections and Drone-Based Aerial Surveys
Creators: name: Koch, S.
name: Weber, T.
name: Sobottka, C.
name: Fladung, A.
name: Clemens, P.
name: Berghold, J.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
Operation of PV Systems

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1736-1740
description: The electroluminescence (EL) scan is a powerful method to detect solar cells or modules with various
defects. The electroluminescence measurement is used by default already in most cell and module production although an
international standard determining pass and fail criteria is still missing. Furthermore, so far there was no suitable
approach available for large-scale investigation of complete plants over 1 MW. One of the reasons is varying ambient
conditions in real power plants that have a significant impact on the EL image quality during data acquisition in field.
However, there is an increasing interest and demand in high volume EL-field inspections. Different systems are available,
whereas most of them only operate during the night, because of less interfering radiation. In this paper two different
methods for high volume EL image capture are compared including the usage of a drone generating EL videos of solar
plants. The pros and cons and especially the influence of irradiation, wind and day time are investigated. Exemplarily
results are presented obtained in a project where 12500 modules – potentially crack affected – have been investigated.
The software-based data analysis revealed that crack-affected cells were mainly located in the center of the modules and
PID affected modules were manly located at the edge.
Heretic Thoughts of an Orthodox Co-operation - A Piece of Journalism?
Creators: name: Tsatsos, Aristidis
Publisher: name: Humboldt-Universität zu Berlin
Year: 2013
Subjects: subject: Orthodoxy
subject: Geostrategy
subject: Ideology
subject: Co-operation
subject: Sovereignty
subject: Crisis
subject: Russia
subject: Balkan States
subject: 320 Politik

description: Values and economic sovereignty in the Orthodox countries are in a state of crisis. What could an Orthodox ideological platform offer? What is the very vision behind the creation of an Orthodox geostrategical arrow and how could it be implemented?
Outdoor Non-Destructive Infrared Thermography of Photovoltaic Modules and Plants for Inspection: IEC 62446-3
Creators: name: Jaeckel, B.
name: Weinreich, B.
name: Buerhop-Lutz, C.
name: Jahn, U.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
Operation of PV Systems

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1741-1745
description: The use of thermography in Photovoltaic started around 2010 and is almost main stream today. Due to that
development quite different results are achieved currently while carrying out thermography in a PV power plant. To
increase the level of understanding and more importantly comparability between thermograms standardization is
urgently needed.
During the past years standardization projects were ongoing on national and international level to improve the
evaluation of thermograms taken of PV components. In this contribution we will first give an overview about the
current situation of standardization by reviewing the history of thermography standardization.
Second we will focus on further achievements in thermography and the implementation of them into an international
IEC standard IEC 62446-3. That includes some, in principle, basics of thermography, personal qualification and
reporting. The purpose of this work and the standardization is to describe the physical and technical parameters that
are required for reliable fault detection in the field when conducting infrared (IR) imaging of PV plants.
Although IR imaging of PV modules and plants in operation is used for several years to locate thermal abnormalities
of BOS components (PV modules, here in particular cells, diodes and connections, and other components like
combiner or fuse boxes), the evaluation and conclusions drawn from such collected thermograms differ significantly.
With the help of this document and the upcoming IEC standard the comparability is aimed to increase and help to
establish a common understanding. At the end an outlook is given for further work which might result in edition two
of IEC 62446-3.
Oscillatory states of quantum Kapitza pendulum
Creators: name: He, Wei
name: Liu, Chang-Yong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81Q05, 81Q80

description: We study quantum mechanics problem described by the Schrödinger equation with Kapitza pendulum potential, that is the asymmetric double-well potential on the circle. For the oscillatory states spatially localize around the two stable saddle positions of the potential, we obtain the perturbative eigenvalues and corresponding piecewise wavefunctions. The spectrum is computed by extending the angle coordinate to the complex plane so that the quantization condition is formulated as contour integral along a path extending in the imaginary direction. Quantum tunneling between the wells is computed.
description: v3, 30 pages, 11 figures, a numerical error corrected in (58)(59), journal version
Comprehensively Characterized Solar Cells: Impact of Angular, Spectral, and Non-Linear Effects
Creators: name: Fey, T.
name: Kröger, I.
name: Witt, F.
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; 1711-1715
description: The prediction of the short-circuit current and hence the efficiency of solar cells is one of the main
tasks for the energy rating (IEC 61853). For the complex simulation of the short-circuit current in the course of a day
a comprehensive characterization of solar cells and a detailed knowledge about the spectral distribution of the natural
sunlight are necessary. PTB recently developed a multi-functional laser-based Differential Spectral Responsivity
(DSR)-facility for characterization and primary calibration of solar cells with lowest uncertainties. Furthermore PTB
developed an outdoor facility for secondary calibration of solar cells and spectral irradiance measurements. We
investigate the spectral responsivity, the linearity, the I-V-curves and the angular dependence of a reference solar cell
using the multi-functional DSR-facility for several irradiance levels and temperatures. The obtained experimental
results are combined with calculated solar spectra for a simulation of the short-circuit current and further the
efficiency for a course of a day. These calculations are done for several orientations of the solar cell (roof: east, south,
west and flat). The algorithm takes the orientations of the solar cells towards the sun and the spectral distribution
(SMARTS, direct and diffuse light, including albedo) into account. For validation of these simulations we measured
the short-circuit currents for the same orientations with the outdoor facility over a complete day. The results show a
good agreement of the measurements and the simulations. This study demonstrates, that a realistic simulation of
short-circuit current and hence the efficiency can be obtained for various kind of solar cells at any outdoor or indoor
conditions, if typical properties of the solar cells (spectral responsivity, linearity, the I-V-curves, angular dependence)
and the spectral distribution are known.
City Narratives as Places of Meaningfulness, Appropriation and Integration
Creators: name: Novak, Sonja
name: Sioli, Angeliki
name: Oliveira, Susana
name: Havik, Klaske
Publisher: name: Writingplace
Year: 2022

description: This issue is an invitation to look beyond the definitions of meaningfulness, appropriation and integration, and explore the relations between them. We have liberally arranged the articles under the three main themes but, as it can easily become clear, there are overlaps among the themes. In that way, this issue offers not only a geographical journey along different urban narratives, but also an expedition into the network of interrelated terms and spatial practices.
description: Writingplace, No. 6 (2022): Meaningfulness, Appropriation and Integration of/in City Narratives
Assessment for IR Inspection Cycles and Efforts Related to System Design
Creators: name: Häring, A.
name: Henne, T.
name: Dobler, S.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
Operation of PV Systems

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1750-1753
description: Operation and maintenance of PV systems is getting more and more important. IR thermography is
getting a standard maintenance measure. However, there is no difference in procedures depending to system design.
But depending to the existence of string-level or module-level monitoring, inspections cycles and efforts in procedure
can be reduced. The more detailed the monitoring is, the less important are short cycles for running a detailed IR
inspections. An assessment is shown how IR inspections could be done considering system design. Reduced costs for
operation and maintenance by saving costs for thermography can be achieved without loss in safety or yield.
Admissible state and physical constraints preserving schemes for relativistic magnetohydrodynamic equations
Creators: name: Wu, Kailiang
name: Tang, Huazhong
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: This paper first studies the admissible state set $\mathcal G$ of relativistic magnetohydrodynamics (RMHD). It paves a way for developing physical-constraints-preserving (PCP) schemes for RMHD equations with the solutions in $\mathcal G$. To overcome the difficulties arising from the extremely strong nonlinearities and no explicit formulas of the primitive variables and flux vectors with respect to the conservative vector, two equivalent forms of $\mathcal G$ with explicit constraints on the conservative vector are skillfully discovered. The first is derived by analyzing roots of several polynomials and transferring successively them, and further used to prove the convexity of $\mathcal G$ with the aid of semi-positive definiteness of the second fundamental form of a hypersurface. While the second is derived based on the convexity and then used to show the orthogonal invariance of $\mathcal G$. The Lax-Friedrichs (LxF) splitting property does not hold generally for nonzero magnetic field, but by a constructive inequality and pivotal techniques, we discover the generalized LxF splitting properties, combining the convex combination of some LxF splitting terms with a discrete divergence-free condition of magnetic field. Based on above analyses, several one- and two-dimensional PCP schemes are then studied. In 1D case, a first-order accurate LxF type scheme is first proved to be PCP under the CFL condition, and then high-order PCP schemes are proposed via a PCP limiter. In 2D case, the discrete divergence-free condition and PCP property are analyzed for a first-order LxF scheme, and two sufficient conditions are derived for high-order accurate PCP schemes. Our analysis reveals in theory for the first time that the discrete divergence-free condition is closely connected with the PCP property. Several numerical examples demonstrate theoretical findings and performance of numerical schemes.
description: 50 pages, 11 figure
The Lockman-SpReSO project. Description, target selection, observations and preliminary results
Creators: name: González-Otero, M.
name: Padilla-Torres, C. P.
name: Cepa, J.
name: González, J. J.
name: Bongiovanni, Á.
name: García, A. M. Pérez
name: González-Serrano, J. I.
name: Alfaro, E.
name: Avila-Reese, V.
name: Benítez, E.
name: Binette, L.
name: Cerviño, M.
name: Cruz-González, I.
name: de Diego, J. A.
name: Gallego, J.
name: Hernández-Toledo, H.
name: Krongold, Y.
name: Lara-López, M. A.
name: Nadolny, J.
name: Pérez-Martínez, R.
name: Pović, M.
name: Sánchez-Portal, M.
name: Cedrés, B.
name: Dultzin, D.
name: Jiménez-Bailón, E.
name: Martínez, R. Navarro
name: Negrete, C. A.
name: Pintos-Castro, I.
name: Valenzuela, O.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context. Extragalactic surveys are a key tool for better understanding the evolution of galaxies. Both deep and wide-field surveys serve to provide a clearer emerging picture of the physical processes that take place in and around galaxies, and to identify which of these processes are the most important in shaping the properties of galaxies. Aims. The Lockman Spectroscopic Redshift Survey using Osiris (Lockman-SpReSO) aims to provide one of the most complete optical spectroscopic follow-ups of the far-infrared (FIR) sources detected by the \textit{Herschel} Space Observatory in the Lockman Hole (LH) field. The optical spectroscopic study of the FIR-selected galaxies supplies valuable information about the relation between fundamental FIR and optical parameters, including extinction, star formation rate, and gas metallicity. In this article, we introduce and provide an in-depth description of the Lockman-SpReSO project and of its early results. Methods. We selected FIR sources from \textit{Herschel} observations of the central 24 arcmin $\times$ 24 arcmin of the LH field with an optical counterpart up to 24.5 $R_{\rm C}$(AB). The sample comprises 956 \textit{Herschel} FIR sources, plus 188 additional interesting objects in the field. These are point X-ray sources, cataclysmic variable star candidates, high-velocity halo star candidates, radio sources, very red quasi-stellar objects, and optical counterparts of sub-millimetre galaxies. The faint component of the catalogue ($R_{\rm C}(\mathrm{AB})\geq20$) was observed using the OSIRIS instrument on the 10.4 m Gran Telescopio Canarias in multi-object spectroscopy (MOS) mode. The bright component was observed using two multi-fibre spectrographs: the AF2-WYFFOS at the William Herschel Telescope and the HYDRA instrument at the WYIN telescope.
description: 22 pages, 12 figures
Beyond Community Inclusivity through Spatial Interventions
Creators: name: Mehan, Asma
name: Nawratek, Krzysztof
name: Tahar, Farouq
Publisher: name: Writingplace
Year: 2022

description: This article argues against the concept of integration as the main mechanism allowing various sociocultural groups to live together and instead proposes ‘radical inclusivity’ as a better, less oppressive model of a pluralistic society. Through analytical and reflective research on the non-cohesion-based approach to integration or inclusion, this article is devoted to examining the affordances and limitations of integration through various forms of spatial interventions. As an example, we will discuss the Ellesmere Green Project in Sheffield (UK) as a typical small urban regeneration executed in a highly diverse part of Sheffield. This piece aims to bring forward the significance of moving beyond the community-as-cohesion model in urban politics and planning for integration.
description: Writingplace, No. 6 (2022): Meaningfulness, Appropriation and Integration of/in City Narratives
Brill-Noether varieties of k-gonal curves
Creators: name: Pflueger, Nathan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We consider a general curve of fixed gonality k and genus g. We propose an estimate for the dimension of the variety $W^r_d(C)$ of special linear series on C, by solving an analogous problem in tropical geometry. Using work of Coppens and Martens, we prove that this estimate is exactly correct if k is at least g/5 + 2, and is an upper bound in all other cases. We also completely characterize the cases in which $W^r_d(C)$ has the same dimension as for a general curve of genus g.
description: 17 pages. v2: statement of Theorem 1.2 improved; various typographical corrections
PV Degradation Curves: Non-Linearities and Failure Modes
Creators: name: Jordan, D.C.
name: Silverman, T.J.
name: Sekulic, B.
name: Kurtz, S.R.
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; 1678-1685
description: PV reliability and durability have seen increased interest in recent years. Historically, and as a
preliminarily reasonable approximation, linear degradation rates have been used to quantify long-term module and
system performance. The underlying assumption of linearity can be violated at the beginning of the life, as has been
well documented, especially for thin-film technology. Additionally, non-linearities in the wear-out phase can have
significant economic impact and appear to be linked to different failure modes. In addition, associating specific
degradation and failure modes with specific time series behavior will aid in duplicating these degradation modes in
accelerated tests and, eventually, in service life prediction. In this paper we discuss different degradation modes and
how some of these cause roughly linear degradation (e.g. modules that were mainly affected by encapsulant
discoloration) while other degradation modes lead to distinctly non-linear degradation (e.g. hot spots caused by
cracked cells or solder bond fatigue and failure). The various behaviors are summarized with the goal of aiding in
predictions of what may be seen in other systems.