cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Band Gap Opening in Stanene Induced by Patterned B-N doping
Creators: name: Garg, Priyanka
name: Choudhuri, Indrani
name: Mahata, Arup
name: Pathak, Biswarup
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Stanene is a quantum spin hall insulator and a promising material for electronic and optoelectronic devices. Density functional theory (DFT) calculations are performed to study the band gap opening in stanene by elemental mono- (B, N) and co-doping (B-N). Different patterned B-N co-doping is studied to change the electronic properties in stanene. A patterned B-N co-doping opens the band gap in stanene and the semiconducting nature persists with strain. Molecular dynamics (MD) simulations are performed to confirm the thermal stability of such doped system. The stress-strain study indicates that such doped system is as stable as pure stanene. Our work function calculations show that stanene and doped stanene has lower work function than graphene and thus promising material for photocatalysis and electronic devices.
description: 29 Pages, 7 figures and 1 table
Best Practices to Uncertainty Estimation for the National Solar Radiation Database (NSRDB 1998-2015)
Creators: name: Habte, A.
name: Sengupta, M.
Publisher: name: WIP
Year: 2017
Subjects: PV System Performance and Integration
Solar Resource and Forecasting

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 2470-2474
description: It is essential to apply a traceable and standard approach to determining the uncertainty of solar resource data. Solar
resource data are used for all phases of solar energy conversion projects, from the conceptual phase to routine solar power
plant operation, and to determine performance guarantees of solar energy conversion systems. These guarantees are based
on the available solar resource data derived from measurement stations or modeled data sets, such as the National Solar
Radiation Database (NSRDB). Therefore, quantifying the uncertainty of these data sets provides confidence to the
financiers, developers, and site operators of solar energy conversion systems, and ultimately reduces deployment costs. In
this study, we implemented the Guide to the Expression of Uncertainty in Measurement [1] to quantify the overall
uncertainty of the NSRDB data. First, we start by quantifying measurement uncertainty, then we determine each
uncertainty statistic of the NSRDB data, and finally we combine them using the root sum squared method. The statistics
were derived by comparing the NSRDB data to the seven measurement stations from the National Oceanic and
Atmospheric Administration’s Surface Radiation Budget Network (SURFRAD), National Renewable Energy
Laboratory’s (NREL’s) Solar Radiation Research Laboratory (SRRL), and the Atmospheric Radiation Measurement
(ARM) program’s Southern Great Plains (SGP) Central Facility, in Billings, Oklahoma. The evaluation was conducted
for hourly values, daily totals, monthly mean daily totals, and annual mean monthly mean daily totals. Varying time
averages assist in capturing the temporal uncertainty of the specific modeled solar resource data required for various
phases of a solar energy project; some phases require higher temporal resolution than others. Overall, by including the
uncertainty of measurements of solar radiation made at ground stations, bias, and root mean square error (RMSE), the
NSRDB data demonstrated expanded hourly and annual uncertainties of 17%–29% and 5%–8% respectively.
Oioceros rothi Gaillard 1902
Creators: name: Güleç, Erksin Savaş
name: Sevim, Ayla
name: Pehlevan, Cesur
name: Kaya, Ferhat
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Artiodactyla
Bovidae
Oioceros

description: Oioceros rothi
description: Published as part of Güleç, Erksin Savaş, Sevim, Ayla, Pehlevan, Cesur & Kaya, Ferhat, 2007, A new great ape from the late Miocene of Turkey, pp. 153-158 in Anthropological Science 115 (2) on page 154, DOI: 10.1537/ase.070501, http://zenodo.org/record/3098249
Binary self-dual codes of various lengths with new weight enumerators from a modified bordered construction and neighbours
Creators: name: Gildea, Joe
name: Korban, Adrian
name: Roberts, Adam Michael
name: Tylyshchak, Alexander
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 94B05, 15B10, 15B33

description: In this work, we define a modification of a bordered construction for self-dual codes which utilises $λ$-circulant matrices. We provide the necessary conditions for the construction to produce self-dual codes over finite commutative Frobenius rings of characteristic 2. Using the modified construction together with the neighbour construction, we construct many binary self-dual codes of lengths 54, 68, 82 and 94 with weight enumerators that have previously not been known to exist.
description: arXiv admin note: substantial text overlap with arXiv:2108.09184, arXiv:2106.12355, arXiv:2102.10354
Comparison of Performance and Degradation of Different PV Plant Configurations in Johannesburg, South Africa
Creators: name: Serameng, T.J.
name: Roro, K.T.
name: Van Dyk, E.E.
name: Crozier, J.L.
name: Vorster, F.J.
Publisher: name: WIP
Year: 2017
Subjects: PV System Performance and Integration
Design and Operation of PV Systems

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 2229-2234
description: The main goal of this work is to investigate the impact of module technologies and mounting
configurations on the performance of PV systems in central part of South Africa. In order to achieve this, a 400 kWp
PV Solar plant has been installed and monitored at the ESKOM Research and Innovation Centre (ERIC) in Rosherville, Gauteng in the central part of South Africa (26°5'5" South, 28°58'1" East and 1625 m above sea level). The plant consists of multi-crystalline silicon (mc-Si) and copper indium gallium selenide (CIGS) thin film technologies. The plant comprises of two 25° fixed-tilt north facing arrays, two east-west single axis tracking arrays and two 10° fixed shed orientation (East and West) for both module technologies and one north-south single axis
tracking for mc-Si. The analysis was conducted for one year, from January 2016 to December 2016. The evaluation
was achieved by studying the operation of PV plant under different weather conditions and the impact of different
configurations and technologies by analyzing mainly in terms of specific yields normalized per m2 (kWh/kWp/m2). The first part of the study investigates the impact on the overall performance of different PV technologies as a function of the module mounting configurations. The second part is ongoing and is aimed at gaining a better understanding of the degradation of PV-modules used by conducting standard indoor laboratory performance tests on modules.
Protoryx sp. Major 1891
Creators: name: Güleç, Erksin Savaş
name: Sevim, Ayla
name: Pehlevan, Cesur
name: Kaya, Ferhat
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Artiodactyla
Bovidae
Protoryx

description: Protoryx sp.
description: Published as part of Güleç, Erksin Savaş, Sevim, Ayla, Pehlevan, Cesur & Kaya, Ferhat, 2007, A new great ape from the late Miocene of Turkey, pp. 153-158 in Anthropological Science 115 (2) on page 154, DOI: 10.1537/ase.070501, http://zenodo.org/record/3098249
Supplementary document for Highly sensitive and selective carbon dots sensor for hydrogen sulfide based on dual quenching effect - 7328805.pdf
Creators: name: Xie, Tian
name: Liu, Liping
name: Zhou, Wei
name: Kang, Weide
name: wen, lili
name: Wang, Shiyue
name: Li, Zongbao
name: Yang, Jianxin
name: Ho, Ho-Pui
name: Jiang, Xiaofang
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: supplement
Scattering of Waves by Impurities in Precompressed Granular Chains
Creators: name: Martínez, Alejandro J.
name: Yasuda, Hiromi
name: Kim, Eunho
name: Kevrekidis, P. G.
name: Porter, Mason A.
name: Yang, Jinkyu
Publisher: name: arXiv
Year: 2016
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study scattering of waves by impurities in strongly precompressed granular chains. We explore the linear scattering of plane waves and identify a closed-form expression for the reflection and transmission coefficients for the scattering of the waves from both a single impurity and a double impurity. For single-impurity chains, we show that, within the transmission band of the host granular chain, high-frequency waves are strongly attenuated (such that the transmission coefficient vanishes as the wavenumber $k\rightarrow \pmπ$), whereas low-frequency waves are well-transmitted through the impurity. For double-impurity chains, we identify a resonance --- enabling full transmission at a particular frequency --- in a manner that is analogous to the Ramsauer--Townsend (RT) resonance from quantum physics. We also demonstrate that one can tune the frequency of the RT resonance to any value in the pass band of the host chain. We corroborate our theoretical predictions both numerically and experimentally, and we directly observe complete transmission for frequencies close to the RT resonance frequency. Finally, we show how this RT resonance can lead to the existence of reflectionless modes even in granular chains (including disordered ones) with multiple double impurities.
description: 12 pages, 9 figures
Focus on Impact: Indoor Exploration with Intrinsic Motivation
Creators: name: Bigazzi, Roberto
name: Landi, Federico
name: Cascianelli, Silvia
name: Baraldi, Lorenzo
name: Cornia, Marcella
name: Cucchiara, Rita
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Exploration of indoor environments has recently experienced a significant interest, also thanks to the introduction of deep neural agents built in a hierarchical fashion and trained with Deep Reinforcement Learning (DRL) on simulated environments. Current state-of-the-art methods employ a dense extrinsic reward that requires the complete a priori knowledge of the layout of the training environment to learn an effective exploration policy. However, such information is expensive to gather in terms of time and resources. In this work, we propose to train the model with a purely intrinsic reward signal to guide exploration, which is based on the impact of the robot's actions on its internal representation of the environment. So far, impact-based rewards have been employed for simple tasks and in procedurally generated synthetic environments with countable states. Since the number of states observable by the agent in realistic indoor environments is non-countable, we include a neural-based density model and replace the traditional count-based regularization with an estimated pseudo-count of previously visited states. The proposed exploration approach outperforms DRL-based competitors relying on intrinsic rewards and surpasses the agents trained with a dense extrinsic reward computed with the environment layouts. We also show that a robot equipped with the proposed approach seamlessly adapts to point-goal navigation and real-world deployment.
description: Published in IEEE Robotics and Automation Letters. To appear in ICRA 2022
PV Powered Reverse Osmosis Desalination System Operating at Variable Pressure Conditions and Controlled by a Multi-Agent Decentralized Energy Management System
Creators: name: Karavas, C.-S.
name: Arvanitis, K.G.
name: Kyriakarakos, G.
name: Piromalis, D.D.
name: Papadakis, G.
Publisher: name: WIP
Year: 2017
Subjects: PV System Performance and Integration
Design and Operation of PV Systems

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 2254-2258
description: Sea water reverse osmosis (SWRO) desalination units coupled with renewable energy systems (RES) such as photovoltaics and/or wind turbines is a very attractive proposition, especially in remote areas for covering potable water supply shortage. The intermittent energy production of RES, makes the integration of energy storage subsystems necessary, such as conventional battery banks, in order to ensure the shifting of energy. In small scale SWRO desalination systems, an energy buffer with adequate capacity is required to power the system for small time periods of time during the day. Moreover, SWRO desalination units show lower specific energy consumption when
the units operate in variable load that in full load mode. Therefore, the utilization of an advanced energy management
system for these systems is essential for their operation. This paper presents an autonomous SWRO desalination system powered by PV, including two alternative energy buffers; an electrical (hybrid capacitors) and a hydraulic (pressure vessels) for short term energy storage. A decentralized energy management system (DEMS) was designed and developed for the SWRO desalination system. The proposed EMS was based on multi agent system (MAS) and employed Fuzzy Cognitive Maps for its implementation. The experimental results, obtained from the application of the proposed MAS – DEMS, showed that the continuous and efficient operation of the desalination unit was ensured.
Plesiaddax sp. Schlosser 1903
Creators: name: Güleç, Erksin Savaş
name: Sevim, Ayla
name: Pehlevan, Cesur
name: Kaya, Ferhat
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Artiodactyla
Bovidae
Plesiaddax

description: Plesiaddax ? sp.
description: Published as part of Güleç, Erksin Savaş, Sevim, Ayla, Pehlevan, Cesur & Kaya, Ferhat, 2007, A new great ape from the late Miocene of Turkey, pp. 153-158 in Anthropological Science 115 (2) on page 154, DOI: 10.1537/ase.070501, http://zenodo.org/record/3098249
Particle identification in ALICE: a Bayesian approach
Creators: name: ALICE Collaboration
Publisher: name: arXiv
Year: 2016
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present a Bayesian approach to particle identification (PID) within the ALICE experiment. The aim is to more effectively combine the particle identification capabilities of its various detectors. After a brief explanation of the adopted methodology and formalism, the performance of the Bayesian PID approach for charged pions, kaons and protons in the central barrel of ALICE is studied. PID is performed via measurements of specific energy loss ($\mathrm{d}E/\mathrm{d}x$) and time-of-flight. PID efficiencies and misidentification probabilities are extracted and compared with Monte Carlo simulations using high-purity samples of identified particles in the decay channels ${\rm K}^0_S \rightarrow π^-π^+$, $ϕ\rightarrow {\rm K}^-{\rm K}^+$, and $Λ\rightarrow {\rm p}π^-$ in p-Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV. In order to thoroughly assess the validity of the Bayesian approach, this methodology was used to obtain corrected $p_{\rm T}$ spectra of pions, kaons, protons, and D$^0$ mesons in pp collisions at $\sqrt{s}=7$ TeV. In all cases, the results using Bayesian PID were found to be consistent with previous measurements performed by ALICE using a standard PID approach. For the measurement of D$^0 \rightarrow {\rm K}^-π^+$, it was found that a Bayesian PID approach gave a higher signal-to-background ratio and a similar or larger statistical significance when compared with standard PID selections, despite a reduced identification efficiency. Finally, we present an exploratory study of the measurement of $Λ_{\rm c}^{+}\rightarrow {\rm p} {\rm K}^-π^+$ in pp collisions at $\sqrt{s}=7$ TeV, using the Bayesian approach for the identification of its decay products.
description: 32 pages, 15 captioned figures, 1 table, authors from page 26, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/2285
Studying Fake News Spreading, Polarisation Dynamics, and Manipulation by Bots: a Tale of Networks and Language
Creators: name: Ruffo, Giancarlo
name: Semeraro, Alfonso
name: Giachanou, Anastasia
name: Rosso, Paolo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: Computation and Language (cs.CL)
subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences
subject: A.1; J.4; G.2; K.4; I.2.7

description: With the explosive growth of online social media, the ancient problem of information disorders interfering with news diffusion has surfaced with a renewed intensity threatening our democracies, public health, and news outlets' credibility. Therefore, thousands of scientific papers have been published in a relatively short period, making researchers of different disciplines struggle with an information overload problem. The aim of this survey is threefold: (1) we present the results of a network-based analysis of the existing multidisciplinary literature to support the search for relevant trends and central publications; (2) we describe the main results and necessary background to attack the problem under a computational perspective; (3) we review selected contributions using network science as a unifying framework and computational linguistics as the tool to make sense of the shared content. Despite scholars working on computational linguistics and networks traditionally belong to different scientific communities, we expect that those interested in the area of fake news should be aware of crucial aspects of both disciplines.
description: 43 pages, 9 figures
Photovoltaic Solar Urban Power Plants Integrated in Urban Furniture Allowing for Solar Communities within Urban Environments
Creators: name: Rodríguez San Segundo, H.-J.
name: Calo López, A.
name: De Vicente Suso, C.
Publisher: name: WIP
Year: 2017
Subjects: PV System Performance and Integration
Building, Infrastructure and Landscape Applications

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 2143-2146
description: Community solar concepts are starting to make noise especially in certain US and European regions. In those concepts, any end-user can participate in either purchasing clean energy from a solar PV power plant and/or investing in a portion of such power plants. However, usually these power plants consist of conventional flat PV
silicon modules, usually in the MW scale far away from the cities. We propose here to bring solar communities right to the front door of the end-users. With the aim of really socializing solar energy, a Photovoltaic Solar Urban (PSU) power plant is presented, made of very small, but widely spread solar generators especially designed to be attached to any urban furniture (for instance, streetlights) and generate right at the consumption points, avoiding transmission,
conversion, tax costs of bringing the energy from far away (almost 40% of the total final price). And also using publicly, widely spread available, already existing and amortized supporting structures (urban furniture). To do so, a novel concept of mini solar module of 40 Wp has been developed and is currently being tested. First simulations on its performance show their worldwide profitability.
Holographic Schwinger effect with a deformed AdS background
Creators: name: Sadeghi, J.
name: Pourhassan, B.
name: Tahery, S.
name: Razavi, F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we consider a deformed AdS background and study effect of deformation parameter on the pair production rate of the Schwinger effect. The electrostatic potential is important for the pair production in the holographic Schwinger effect. In this paper, we analyze the electrostatic potential in a deformed AdS background and investigate the effect of deformation parameter which may be useful to test of AdS/QCD. In the case of zero temperature we find that larger value of the deformation parameter leads to a smaller value of separation length of the test particles on the probe. Also we find a finite maximum of separation length in presence of modification parameter.
description: 21 pages, 17 figures. Title changed, references and figures added in the new version
Decentralized Fuzzy-Based Voltage Control for LV Distribution Systems
Creators: name: Bernal, E.A.
name: Bueno-López, M.
name: Molinas, M.M.
Publisher: name: WIP
Year: 2017
Subjects: PV System Performance and Integration
Grid and Energy System Integration

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 2171-2175
description: With the inclusion of Information and Communication Technology (ICT) components into the lowvoltage (LV) distribution grid, some measurement data from smart meters are available for the control of the distribution networks with high penetration of photovoltaic systems (PV). This paper undertakes a decentralized
voltage-control strategy for smart LV distribution networks, by using a Fuzzy Control in combination with the information collected from smart meters as source of information of the status of the system. Comparison studies for a smart LV distribution system to validate the method are presented, showing the robustness of proposed method compared with the traditional local approaches. To illustrate the applicability of the proposed method, a real-time
digital simulator (RTDS) for smart distribution power grids is used. The analysis of the obtained results showed that the proposed method could to mitigate the negative impacts of the high PV penetration, as well as minimize the
voltage rise and power losses.
SoftCloud: A Tool for Visualizing Software Artifacts as Tag Clouds
Creators: name: Al-Msie'deen, Ra'Fat
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Software artifacts visualization helps software developers to manage the size and complexity of the software system. The tag cloud technique visualizes tags within the cloud according to their frequencies in software artifacts. A font size of the tag within the cloud indicates its frequency within a software artifact, while the color of a tag within the cloud uses just for aesthetic purposes. This paper suggests a new approach (SoftCloud) to visualize software artifacts as a tag cloud. The originality of SoftCloud is visualizing all the artifacts available to the software program as a tag cloud. Experiments have conducted on different software artifacts to validate SoftCloud and demonstrate its strengths. The results showed the ability of SoftCloud to correctly retrieve all tags and their frequencies from available software artifacts.
description: 14 pages, 10 figures, 10 tables
Suboptimal nonlinear model predictive control with input move-blocking
Creators: name: Makarow, Artemi
name: Rösmann, Christoph
name: Bertram, Torsten
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: This paper deals with the integration of input move-blocking into the framework of suboptimal model predictive control. The blocked input parameterization is explicitly considered as a source of suboptimality. A straightforward integration approach is to hold back a manually generated stabilizing fallback solution in some buffer for the case that the optimizer does not find a better input move-blocked solution. An extended approach superimposes the manually generated stabilizing warm-start by the move-blocked control sequence and enables a stepwise improvement of the control performance. In addition, this contribution provides a detailed review of the literature on input move-blocked model predictive control and combines important results with the findings of suboptimal model predictive control. A numerical example supports the theoretical results and shows the effectiveness of the proposed approach.
description: Added missing condition to Eq. (11); Added reference to difference inclusion (12) in Prop. 7 and Prop. 10; Removed typos;
Comparison of the Simulated and the Measured Outdoor Power Generation Performance of PV Module & System
Creators: name: Lim, J.-K.
name: Kim, M.
name: Yoon, S.
name: Kang, H.
name: Jang, J.W.
name: Ahn, J.-H.
name: Kim, T.
name: Lee, S.
Publisher: name: WIP
Year: 2017
Subjects: PV System Performance and Integration
Design and Operation of PV Systems

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 2288-2290
description: The performance ratio (PR) of PV individual module and PV system were predicted by the PV
simulation tool, PVsyst, and the predicted PR was compared with the real PR which was measured with electrical
output and weather data, which was collected under field conditions. In this study, the difference between the
simulated PR and the measured PR could be minimized by optimizing the PVsyst loss parameter (including the
shading loss, IAM loss, soling loss, quality loss, LID loss, mismatch loss, wiring loss, inverter loss), the
meteorological data, PANfile etc. Using the on-site measured meteorological data and optimized input parameters,
the difference between the simulated PR and measured PR was within 1 %.
Local limit of the fixed point forest
Creators: name: Johnson, Tobias
name: Schilling, Anne
name: Slivken, Erik
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 60J80, 05C05, 05A05, 60C05, 06F99

description: Consider the following partial "sorting algorithm" on permutations: take the first entry of the permutation in one-line notation and insert it into the position of its own value. Continue until the first entry is 1. This process imposes a forest structure on the set of all permutations of size $n$, where the roots are the permutations starting with 1 and the leaves are derangements. Viewing the process in the opposite direction towards the leaves, one picks a fixed point and moves it to the beginning. Despite its simplicity, this "fixed point forest" exhibits a rich structure. In this paper, we consider the fixed point forest in the limit $n\to \infty$ and show using Stein's method that at a random permutation the local structure weakly converges to a tree defined in terms of independent Poisson point processes. We also show that the distribution of the length of the longest path to a leaf converges to the geometric distribution with mean $e-1$, and the length of the shortest path converges to the Poisson distribution with mean 1. In addition, the higher moments are bounded and hence the expectations converge as well.
description: 26 pages; final published version
Validation of an All-Sky Imager Based Nowcasting System for Industrial PV Plants
Creators: name: Kuhn, P.
name: Nouri, B.
name: Wilbert, S.
name: Prahl, C.
name: Kozonek, N.
name: Schmidt, T.
name: Yasser, Z.
name: Ramirez, L.
name: Zarzalejo, L.
name: Meyer, A.
name: Vuilleumier, L.
name: Heinemann, D.
name: Blanc, P.
name: Pitz-Paal, R.
Publisher: name: WIP
Year: 2017
Subjects: PV System Performance and Integration
Solar Resource and Forecasting

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 2082-2092
description: Due to the cloud induced variability of the solar resource, the growing contributions of photovoltaic
plants to the overall power generation challenges the stability of electricity grids. To avoid blackouts, administrations
started to define maximum negative ramp rates. Storages can be used to reduce the occurring ramps. Their required
capacity, durability and costs can be optimized by nowcasting systems. Nowcasting systems utilize the input of
upward-facing cameras to predict future irradiances. Previously, many nowcasting systems were developed and
validated. However, these validations did not consider aggregation effects, which are present in industrial-size power
plants. In this paper, we present the validation of nowcasted global horizontal irradiance (GHI) and direct normal irradiance (DNI) maps derived from an example system consisting of four all-sky cameras (‘WobaS’). The WobaS system is operational at two solar energy research centers and at a commercial 50 MW solar power plant. Besides its validation on 30 days, the working principle is briefly explained. The forecasting deviations are investigated with a focus on temporal and spatial aggregation effects. The validation found that spatial and temporal aggregations significantly improve forecast accuracies: Spatial aggregation reduces the relative RMSE (GHI) from 30.9 % (one
pixel of the GHI map of 25 m2) to 23.5 % (4 km2) on a day with variable conditions for one minute averages and a lead time of 15 min. Over 30 days of validation, a relative RMSE (GHI) of 20.4 % for the next 15-minutes is observed at pixel basis (25 m2). Although the deviations of nowcasting systems strongly depend on the validation period and the specific weather conditions, the WobaS system is considered to be at least state-of-the-art.
Solution of quantum integrable systems from quiver gauge theories
Creators: name: Dorey, Nick
name: Zhao, Peng
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We construct new integrable systems describing particles with internal spin from four-dimensional $\mathcal{N}=2$ quiver gauge theories. The models can be quantized and solved exactly using the quantum inverse scattering method and also using the Bethe/Gauge correspondence.
description: 35 pages + appendices, 6 figures. v2: minor corrections, version submitted to journal
A New Metric for Assessing Local Mechanical Load Scenarios for PV Modules at Specific Locations
Creators: name: Camus, C.
name: Offermann, P.
name: Weissmann, M.
name: Buerhop-Lutz, C.
name: Hauch, J.
name: Brabec, C.J.
Publisher: name: WIP
Year: 2017
Subjects: PV System Performance and Integration
Design and Operation of PV Systems

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 2274-2279
description: In this paper, a new metric for assessing the location-specific mechanical loads imposed by snow or wind gusts which a photovoltaic module can be expected to be exposed to at a given location is introduced. For demonstrating this general approach, two locations of moderate distance (~110km) in Northern Bavaria are compared. It is shown that even on moderate distances the expected loads differ by a factor of four or more highlighting the importance of location-specific requirements for PV modules. For assessing the loads, the historical weather data of the closest surrounding weather station is evaluated in order to deduce an expectation value for the site of interest. This data is analyzed with respect to the frequency and severity of the relevant weather events such that the annuality of a weather event of a given severity can be determined. Finally, the severity of an event
corresponding to a single occurrence in 20 years, i.e. a standard product warranty, is chosen to represent the requirements of a location with respect to a certain parameter.
A Chemical Master Equation Model for Synaptic Molecular Communication
Creators: name: Lotter, Sebastian
name: Schäfer, Maximilian
name: Schober, Robert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Emerging Technologies (cs.ET)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: In synaptic molecular communication, the activation of postsynaptic receptors by neurotransmitters (NTs) is governed by a stochastic reaction-diffusion process and, hence, inherently random. It is currently not fully understood how this randomness impacts downstream signaling in the target cell and, ultimately, neural computation and learning. The statistical characterization of the reaction-diffusion process is difficult because the reversible bi-molecular reaction of NTs and receptors renders the system nonlinear. Consequently, existing models for the receptor occupancy in the synaptic cleft rely on simplifying assumptions and approximations which limit their practical applicability. In this work, we propose a novel statistical model for the reaction-diffusion process governing synaptic signal transmission in terms of the chemical master equation (CME). We show how to compute the CME efficiently and verify the accuracy of the obtained results with stochastic particle-based computer simulations (PBSs). Furthermore, we compare the proposed model to two benchmark models proposed in the literature and show that it provides more accurate results when compared to PBSs. Finally, the proposed model is used to study the impact of the system parameters on the statistical dependence between binding events of NTs and receptors. In summary, the proposed model provides a step forward towards a complete statistical characterization of synaptic signal transmission.
description: 6 pages, 3 figures, 1 table. Presented at the 2022 IEEE Wireless Communications and Networking Conference (WCNC), Austin, TX, USA
Spin-orbit coupled correlated metal phase in Kondo lattices: an implementation with alkaline-earth atoms
Creators: name: Isaev, L.
name: Schachenmayer, J.
name: Rey, A. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We show that an interplay between quantum effects, strong on-site ferromagnetic exchange interaction and antiferromagnetic correlations in Kondo lattices can give rise to an exotic spin-orbit coupled metallic state in regimes where classical treatments predict a trivial insulating behavior. This phenomenon can be simulated with ultracold alkaline-earth fermionic atoms subject to a laser-induced magnetic field by observing dynamics of spin-charge excitations in quench experiments.
A 160 kWp Constant Pressure PV Irrigation System in Spain
Creators: name: Barata Carrêlo, I.B.
name: Almeida, R.H.
name: Martinez-Moreno, F.
name: Carrasco, L.M.
name: Narvarte, L.
Publisher: name: WIP
Year: 2017
Subjects: PV System Performance and Integration
Design and Operation of PV Systems

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 2262-2265
description: This paper describes a 160 kWp PV irrigation system at constant pressure installed in Valladolid, Spain. The objective of this paper is to present the design, as well as the implementation of the system. Moreover, monitoring data, from 22nd June to 31st August 2017, is analyzed and some first results are presented. During this period, the system was working, on average, almost 10 hours per day, which corresponds to 2085 m3 of pumped water per day.
Performance Estimation of Bifacial PV Modules: A Simulation Approach through Both Physical and Semi-Empirical Math Models and Its Validation Using Real Bifacial Plant Data
Creators: name: Catena, M.
name: Cascone, I.
name: Carbone, M.
Publisher: name: WIP
Year: 2017
Subjects: PV System Performance and Integration
Design and Operation of PV Systems

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 1968-1972
description: Bifacial PV modules seem to be the most promising technology in the field of photovoltaic generation. The simple and innovative idea to build a module with two active faces seems easy and straightforward but now engineers have to face a new challenge: the determination of the effective energetic yield of both faces.
This paper will cover a computation method using both physical and semi-empirical math models, implemented in a custom developed software tool, to determine the total irradiance that hits the modules, on both sides, forecast the energy production and finally validate the achieved results with the experimental data of an in-operation 570 kWp bifacial PV plant.
This paper will show also an effective approach to find the optimal geometrical PV field layout for bifacial application as
well the integration of the presented computation methods with existing PV simulation software packages.
An Overview of the LAS File Format and Its Implementation in SGIS v.R
Creators: name: Gjorgjieva, Elena
name: Gjorgjiev, Kiro
Publisher: name: Zenodo
Year: 2024

description: This guide provides a concise, step-by-step process for loading LAS files into SGIS v.R.

The LAS file format versions (LAS 1.1, LAS 1.2, LAS 1.3, and LAS 1.4) represent different revisions of the LAS specification, each introducing new features and improvements to accommodate the evolving needs of LiDAR data storage and usage.
Improved empirical parametrizations of the $γ^\ast N \to N(1535)$ transition amplitudes and the Siegert's theorem
Creators: name: Ramalho, G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Some empirical parametrizations of the $γ^\ast N \to N(1535)$ transition amplitudes violates the Siegert's theorem, that relates the longitudinal and the transverse amplitudes, in the pseudo-threshold limit (nucleon and resonance at rest). In the case of the electromagnetic transition from the nucleon (mass $M$) to the resonance $N(1525)$ (mass $M_R$), the Siegert's theorem is sometimes expressed by the relation $|{\bf q}| A_{1/2}= λS_{1/2}$ in the pseudo-threshold limit, when the photon momentum $|{\bf q}|$ vanishes, and $λ= \sqrt{2} (M_R -M)$. In this article, we argue that the Siegert's theorem should be expressed by the relation $A_{1/2} = λ\frac{S_{1/2}}{ |{\bf q}|}$, in the limit $|{\bf q}| \to 0$. This result is a consequence of the relation $S_{1/2} \propto |{\bf q}|$, when $|{\bf q}| \to 0$, as suggested by the analysis of the transition form factors and by the orthogonality between the nucleon and $N(1535)$ states. We propose then new empirical parametrizations for the $γ^\ast N \to N(1535)$ helicity amplitudes, that are consistent with the data and the Siegert's theorem. The proposed parametrization follow closely the MAID2007 parametrization, except for a small deviation in the amplitudes $A_{1/2}$ and $S_{1/2}$ when $Q^2 < 1.5$ GeV$^2$.
description: To appear in the Phys.Lett.B. 7 pages, 4 figures
Halos and undecidability of tensor stable positive maps
Creators: name: van der Eyden, Mirte
name: Netzer, Tim
name: Cuevas, Gemma De las
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A map $\mathcal{P}$ is tensor stable positive (tsp) if $\mathcal{P}^{\otimes n}$ is positive for all $n$, and essential tsp if it is not completely positive or completely co-positive. Are there essential tsp maps? Here we prove that there exist essential tsp maps on the hypercomplex numbers. It follows that there exist bound entangled states with a negative partial transpose (NPT) on the hypercomplex, that is, there exists NPT bound entanglement in the halo of quantum states. We also prove that tensor stable positivity on the matrix multiplication tensor is undecidable, and conjecture that tensor stable positivity is undecidable. Proving this conjecture would imply existence of essential tsp maps, and hence of NPT bound entangled states.
description: 30 pages and 8 figures. See https://youtu.be/G87-Ib2JRfw for a video about this paper
Twisted two-dimensional material stacks for polarization optics
Creators: name: Khaliji, Kaveh
name: Martin-Moreno, Luis
name: Avouris, Phaedon
name: Oh, Sang-Hyun
name: Low, Tony
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The ability to control light polarization state is critically important for diverse applications in information processing, telecommunications, and spectroscopy. Here, we propose that a stack of anisotropic van der Waals materials can facilitate the building of optical elements with Jones matrices of unitary, Hermitian, non-normal, singular, degenerate, and defective classes. We show that the twisted stack with electrostatic control can function as arbitrary-birefringent wave-plate or arbitrary polarizer with tunable degree of non-normality, which in turn give access to plethora of polarization transformers including rotators, pseudorotators, symmetric and ambidextrous polarizers. Moreover, we discuss an electrostatic-reconfigurable stack which can be tuned to operate as four different polarizers and be used for Stokes polarimetry.
Automatisches Modellieren von Agenten-Verhalten
Creators: name: Wendler, Jan
Publisher: name: Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II
Year: 2003
Subjects: subject: Verhaltensmodellierung
subject: Multi-Agenten-Systeme
subject: MAS
subject: Fallbasiertes Schließen
subject: FBS
subject: Verhaltenvorhersage
subject: RoboCup
subject: Gegnermodellierung
subject: Nachahmen
subject: behavior modeling
subject: multi agent systems
subject: case based reasoning
subject: CBR
subject: behavior prediction
subject: opponent modeling
subject: mimic
subject: behavior monitoring
subject: agent tracking
subject: 004 Informatik
subject: 28 Informatik, Datenverarbeitung

description: In Multi-Agenten-Systemen (MAS) kooperieren und konkurrieren Agenten um ihre jeweiligen Ziele zu erreichen. Für optimierte Agenten-Interaktionen sind Kenntnisse über die aktuellen und zukünftigen Handlungen anderer Agenten (Interaktionsparter, IP) hilfreich. Bei der Ermittlung und Nutzung solcher Kenntnisse kommt dem automatischen Erkennen und Verstehen sowie der Vorhersage von Verhalten der IP auf Basis von Beobachtungen besondere Bedeutung zu. Die Dissertation beschäftigt sich mit der automatischen Bestimmung und Vorhersage von Verhalten der IP durch einen Modellierenden Agenten (MA). Der MA generiert fallbasierte, adaptive Verhaltens-Modelle seiner IP und verwendet diese zur Vorhersage ihrer Verhalten. Als Anwendungsszenario wird mit dem virtuellen Fußballspiel des RoboCup ein komplexes und populäres MAS betrachtet. Der Hauptbeitrag dieser Arbeit besteht in der Ausarbeitung, Realisierung und Evaluierung eines Ansatzes zur automatischen Verhaltens-Modellierung für ein komplexes Multi-Agenten-System.
description: In multi-agent-systems agents cooperate and compete to reach their personal goals. For optimized agent interactions it is helpful for an agent to have knowledge about the current and future behavior of other agents. Ideally the recognition and prediction of behavior should be done automatically. This work addresses a way of automatically classifying and an attempt at predicting the behavior of a team of agents, based on external observation only. A set of conditions is used to distinguish behaviors and to partition the resulting behavior space. From observed behavior, team specific behavior models are then generated using Case Based Reasoning. These models, which are derived from a number of virtual soccer games (RoboCup), are used to predict the behavior of a team during a new game. The main contribution of this work is the design, realization and evaluation of an automatic behavior modeling approach for complex multi-agent systems.
BIPV Products Overview for Solar Building Skin
Creators: name: Bonomo, P.
name: Zanetti, I.
name: Frontini, F.
name: Van Den Donker, M.N.
name: Vossen, F.
name: Folkerts, W.
Publisher: name: WIP
Year: 2017
Subjects: PV System Performance and Integration
Building, Infrastructure and Landscape Applications

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 2093-2098
description: In this paper, the authors report on a jointly conducted analysis of the current status of the BIPV market by giving a comprehensive overview on the available products, the current trends of technological innovation, the application ranges and a survey on the price levels. For this purpose a market survey was conducted among the various stakeholders in the BIPV sector, including manufacturers, installers and BIPV product suppliers. The survey focused on different application areas: roof and façade systems including both crystalline and thin film technologies. The market
survey was conducted for the European market, with emphasis on The Netherlands and Switzerland. The most frequent
products investigated were PV tiles and full roof solution (mainly for residential roofs). Although crystalline silicon technology was most commonly used, thin film technologies gained considerable share as well as façade systems. The data from the price survey showed that BIPV systems for the building skin can be executed at very similar costs than projects involving conventional building products.
Poincaré inequalities for the maximal function
Creators: name: Saari, Olli
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42B25, 46E35, 42B35

description: We study generalized Poincaré inequalities. We prove that if a function satisfies a suitable inequality of Poincaré type, then the Hardy-Littlewood maximal function also obeys a meaningful estimate of similar form. As a by-product, we get a unified approach to proving that the maximal operator is bounded on Sobolev, Lipschitz and BMO spaces.
description: 19 pages, 1 figure, a change in the abstract and a mistake removed. The application to $W^{1,1}$ reproduces the known results but does not improve them. All theorems remain as they were