cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
I-V Characteristics of Broken Bypass Diode on PV Module
Creators: name: Oke, S.
name: Sakai, H.
name: Tottori, H.
name: Shimizu, Y.
name: Choo, N.
name: Nanno, I.
name: Hamada, T.
name: Ishikura, N.
name: Fujii, M.
Publisher: name: WIP
Year: 2018
Subjects: PV Systems - Performance, Applications and Integration
Operation, Performance and Maintenance of PV Systems

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 1996-2000
description: Surge voltage or current induced by lightning strike around a PV system often causes short circuit
failure of a bypass diode (BPD) on the PV module. We investigated the characteristics of BPDs broken by the
induced lightning and evaluated the overheating and degradation of the broken BPD. The BPDs on the broken PV
modules with slight damage were often shorted. The BPDs on the broken PV modules with serious damage had
previous phase that was a short circuit failure. Current was injected into a BPD with separated cell string by constant
current power supply to reproduce degradation of BPD with bypass current. The BPD shorted and had characteristic
like a resistance. The shorted BPD was heated with current from a cell string of the shorted BPD in case the broken
PV module did not operate. If a PV module had a partial shade in a cell string with the shorted BPD, the shorted BPD
was heated by the current from other cell strings without the shade. These results show that if the shorted BPD is left
unattended, it can cause serious accidents of PV system such as an overheating or a fire.
Mesoporous silica filled smart super oleophilic fibers of triblock copolymer nanocomposites for oil absorption applications
Creators: name: Elgawady, Yara
name: Ponnamma, Deepalekshmi
name: Adham, Samer
name: Al-Maas, Mashael
name: Ammar, Ali
name: Alamgir, Karim
name: Al-Maadeed, Mariam Al Ali
name: Hassan, Mohammad K.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Environmental engineering
subject: FOS: Environmental engineering

description: Super oleophilic fibers of styrene-isoprene-styrene (SIS) block copolymer/mesoporous silica (MS) nanocomposites are fabricated by electrospinning, and their oil absorption efficiency is monitored by following two different approaches. The first way is by using the fibers as tubular packing materials for oil absorption, whereas the second approach uses the fibers as filtration membrane after deposition on the commercial polyethersulfone (PES) support. All composites are made by adding inorganic MS in different concentrations (2, 4, and 7 wt.%) to SIS block copolymer. The addition of MS increases the fiber diameters and leads to enlarged and bead-like appearances, especially at higher filler concentrations. The oil absorption efficiency is explored based on the oil absorption capacity of the samples as well as with the gravity-driven oil filtration experiments. The best oil absorption efficiency is achieved by the 4 wt.% SIS-MS composite (150% higher oil absorption capacity compared to the neat SIS), and it is used to spin on the PES mechanical support of different pore sizes (0.2 μ and 8 μ). Ultrafiltration tests conducted on those coated membranes observe improved oil rejection performance as the fibrous SIS-MS are layered on the commercial mechanical support.Other Information Published in: Emergent Materials
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s42247-020-00111-3
Isomorphic structure of Cesàro and Tandori spaces
Creators: name: Astashkin, Sergey V.
name: Leśnik, Karol
name: Maligranda, Lech
Publisher: name: arXiv
Year: 2015
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46E30, 46B20, 46B42

description: We investigate the isomorphic structure of the Cesàro spaces and their duals, the Tandori spaces. The main result states that the Cesàro function space $Ces_{\infty}$ and its sequence counterpart $ces_{\infty}$ are isomorphic, which answers to the question posted in \cite{AM09}. This is rather surprising since $Ces_{\infty}$ has no natural lattice predual similarly as the known Talagrand's example \cite{Ta81}. We prove that neither $ces_{\infty}$ is isomorphic to $l_{\infty}$ nor $Ces_{\infty}$ is isomorphic to the Tandori space $\widetilde{L_1}$ with the norm $\|f\|_{\widetilde{L_1}}= \|\widetilde{f}\|_{L_1},$ where $\widetilde{f}(t):= \esssup_{s \geq t} |f(s)|.$ Our investigation involves also an examination of the Schur and Dunford-Pettis properties of Cesàro and Tandori spaces. In particular, using Bourgain's results we show that a wide class of Ces{à}ro-Marcinkiewicz and Ces{à}ro-Lorentz spaces have the latter property.
System Failure Analysis Tool for PV Plants – A Software Concept for Non-Specialists
Creators: name: Horn, A.
name: Mühleisen, W.
name: Hirschl, C.
name: Ebner, R.
name: Spielberger, M.
name: Sonnleitner, H.
Publisher: name: WIP
Year: 2018
Subjects: PV Systems - Performance, Applications and Integration
Operation, Performance and Maintenance of PV Systems

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 2018-2020
description: Large knowledge about failure possibilities of PV plants has been accumulated during the research Project INFINITY. This paper intends to develop tools for optimising the maintenance strategies of PV systems. The developed software, presented in this article, provides a tool for responsible people to overcome the lack of expert knowledge in that area in a way to enable them to find these potential failures. It represents a support for laypersons as well as professionals.
VideoAdviser: Video Knowledge Distillation for Multimodal Transfer Learning
Creators: name: Wang, Yanan
name: Zeng, Donghuo
name: Wada, Shinya
name: Kurihara, Satoshi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Multimodal transfer learning aims to transform pretrained representations of diverse modalities into a common domain space for effective multimodal fusion. However, conventional systems are typically built on the assumption that all modalities exist, and the lack of modalities always leads to poor inference performance. Furthermore, extracting pretrained embeddings for all modalities is computationally inefficient for inference. In this work, to achieve high efficiency-performance multimodal transfer learning, we propose VideoAdviser, a video knowledge distillation method to transfer multimodal knowledge of video-enhanced prompts from a multimodal fundamental model (teacher) to a specific modal fundamental model (student). With an intuition that the best learning performance comes with professional advisers and smart students, we use a CLIP-based teacher model to provide expressive multimodal knowledge supervision signals to a RoBERTa-based student model via optimizing a step-distillation objective loss -- first step: the teacher distills multimodal knowledge of video-enhanced prompts from classification logits to a regression logit -- second step: the multimodal knowledge is distilled from the regression logit of the teacher to the student. We evaluate our method in two challenging multimodal tasks: video-level sentiment analysis (MOSI and MOSEI datasets) and audio-visual retrieval (VEGAS dataset). The student (requiring only the text modality as input) achieves an MAE score improvement of up to 12.3% for MOSI and MOSEI. Our method further enhances the state-of-the-art method by 3.4% mAP score for VEGAS without additional computations for inference. These results suggest the strengths of our method for achieving high efficiency-performance multimodal transfer learning.
description: Accepted by IEEE Access
Delta Structure for Constant Daily Power Profile in PV Irrigation Systems
Creators: name: Almeida, R.H.
name: Barata Carrêlo, I.A.
name: Narvarte Fernández, L.
name: Lorenzo Pigueiras, E.
Publisher: name: WIP
Year: 2018
Subjects: PV Systems - Performance, Applications and Integration
Operation, Performance and Maintenance of PV Systems

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 2028-2030
description: This paper presents a different type of photovoltaic (PV) structure called delta, S(60). This was developed in order to achieve a constant irradiance daily profile similar to the one obtained with a North-South horizontal axis tracker (1xh) since this constancy is essential for a set of PV applications, namely for PV irrigation systems because the dynamic of the well usually requires constant water flow. The performance of S(60) in a PV irrigation system (PVIS) pumping to a water pool in Spain is compared with the one of 1xh and with the one of a typical static structure oriented to the Equator, S(25). Results show that S(60) is of keen interest in PVIS since it requires a peak power lower than the one needed in the case of S(25) in order to achieve the same water volume along the irrigation period.
Hybrid Crystals of Cuprates and Iron-Based Superconductors
Creators: name: Dai, Xia
name: Le, Congcong
name: Wu, Xianxin
name: Hu, Jiangping
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We propose two possible new compounds, Ba$_2$CuO$_2$Fe$_2$As$_2$ and K$_2$CuO$_2$Fe$_2$Se$_2$, which hybridize the building blocks of two high temperature superconductors, cuprates and iron-based superconductors. These compounds consist of square CuO$_2$ layers and antifluorite-type Fe$_2$X$_2$ (X=As,Se) layers separated by Ba/K. The calculations of binding energies and phonon spectrums indicate that they are dynamically stable, which ensures that they may be experimentally synthesized. The Fermi surfaces and electronic structures of the two compounds inherit the characteristics of both cuprates and iron-based superconductors. These compounds can be superconductors with intriguing physical properties to help to determine pairing mechanisms of high $T_c$ superconductivity.
description: 7 pages, 8 figures
A Health Check of the Italian Solar Photovoltaic Park Using Satellite-Based Solar Resource Data
Creators: name: Virtuani, A.
name: Betak, J.
name: Skoczek, A.
Publisher: name: WIP
Year: 2018
Subjects: PV Systems - Performance, Applications and Integration
Operation, Performance and Maintenance of PV Systems

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 2014-2017
description: At country level, the average Performance Ratio PR for Italy is presently low (68.6% in 2016). At regional level we observe a strong dispersions in the results and the presence of some outliers. Regions with the lowest PR are Lombardia, Liguria, and Campania. Puglia, the region with largest average size of solar plants exhibits the highest PR. We then refine our analysis to province level calculating PR2016 values for the 108 Italian provinces using 2016 data, a year for which irradiation data are well aligned to long-term averages. With some outliers, the vast majority of PR2016 for the different provinces lies between 60-70%. We then look for some correlations that can describe the strong scatter in the data presented: (1) it is difficult to observe a clear correlation between average system size in the province and PR for average sizes below 45 kW. On the other hand, above this threshold, system size is generally a good indicator of good performance; (2) the residential (and building) density in the province (which can be correlated to some extent to increased shading losses, particularly for small/medium-size rooftop installations) has a strong impact on PR and can be described by a hyperbolic relation; (3) the effect of province elevation on PR is not clear, nevertheless, not necessarily provinces located at higher altitudes (and potentially increasingly affected by far shading) have lower PRs. These correlations are sometimes weak, but we believe that this analysis could be improved considerably by increasing the spatial granularity of the data and focusing on smaller geographical units, such as communes or even at the scale of the single PV plant.
Recent advances in stimuli-responsive drug release and targeting concepts using mesoporous silica nanoparticles
Creators: name: Abdo, Ghada G.
name: Zagho, Moustafa M.
name: Khalil, Ashraf
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Environmental engineering
subject: FOS: Environmental engineering

description: Being a developed and promising approach, nanotechnology has attracted a lot of attention in biomedical and pharmaceutical therapy applications. Among nanostructured materials, mesoporous silica nanoparticles (MSNs) are effectively used as nanocarriers for drug delivery systems. MSNs can be tailored-designed by different synthetic techniques. Their morphological characteristics dictate the type of application of such materials. Recently, polymer-based materials have been employed to functionalize the MSNs surface. These modified nanocarriers are loaded with the drug and can unload their “cargo” upon exposure to either endogenous or exogenous types of stimuli. In this study, different targeting concepts, including passive, active, vascular, nuclear, and multistage targeting, are discussed.Other Information Published in: Emergent Materials
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s42247-020-00109-x
Use of laser-induced break spectroscopy for the determination of major and trace elements in Zanthoxylum armatum
Creators: name: Shahida, Shabnam
name: Khan, Muhammad Imran
name: Azad, Sadaf
name: Ahmed, Nasar
name: Lashari, Mushtaq Hussain
name: Khraisheh, Majeda
name: Almomani, Fares
name: Zafar, Shagufta
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Environmental engineering
subject: FOS: Environmental engineering

description: Zanthoxylum armatum (ZA) is a medicinal plant (MP) that is widely distributed in hilly and moist areas and has a different medical effect on human curative functions. Laser-induced breakdown spectroscopy (LIBS) was employed as a simple, easy, and accurate method to analyze the elemental profile of Zanthoxylum armatum (ZA) (timur). Various elements present in different parts of ZA were identified including sodium, magnesium, calcium, potassium, titanium, iron, barium, aluminum, lithium, and silicon. The proposed method accuracy was found to be comparable with high technical complicated lab equipment The concentrations of these elements were determined and were found to be below the toxic level.Other Information Published in: Emergent Materials
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s42247-020-00095-0
Track 3: Computations in theoretical physics -- techniques and methods
Creators: name: Luisoni, Gionata
name: Poslavsky, Stanislav
name: Schroder, York
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Here, we attempt to summarize the activities of Track 3 of the 17th International Workshop on Advanced Computing and Analysis Techniques in Physics Research (ACAT 2016).
description: 10 pages, 3 figures, to appear in the proceedings of ACAT 2016
Evaluation of Irradiance Sensor Technologies for Plant Monitoring of PV Systems with CIGS Thin Film Modules
Creators: name: Grünsteidl, S.
name: Borowski, P.
name: Dalibor, T.
Publisher: name: WIP
Year: 2018
Subjects: PV Systems - Performance, Applications and Integration
Operation, Performance and Maintenance of PV Systems

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 2021-2027
description: Selected data of a network of 20 small-scale reference PV plants in different climatic locations was analyzed with respect to the irradiance sensor technologies used. The modules of the PV systems solely consist of Copper-Indium-Gallium-Selenide (CIGS) thin film modules. The respective sensors, being commercially most commonly used sensors, were further individually analyzed with different data acquisition setups and specific test stands under outdoor (location Munich/Germany) and indoor conditions. Angular, spectral and temperature behavior was analyzed in order to quantify relative difference between the sensors under different irradiance conditions. Two CIGS modules with differing spectral response were investigated separately. The results show good agreements between CIGS and c-Si sensors (temperature compensated and uncompensated), while a pyranometer and a-Si sensor lead to larger discrepancies under certain light and temperature conditions. As normative standards do not imply strict technological requirements, this can lead to severe discrepancies in plant monitoring and high deviations in predictability. Suitable sensors and high calibration standards are strongly recommended.
Radio luminosity function of brightest cluster galaxies
Creators: name: Yuan, Z. S.
name: Han, J. L.
name: Wen, Z. L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: By cross-matching the currently largest optical catalog of galaxy clusters and the NVSS radio survey database, we obtain the largest complete sample of brightest cluster galaxies (BCGs) in the redshift range of 0.05
description: 10 pages, 9 figures. MNRAS in press
Use of nanoadvanced activated carbon, alumina and ferric adsorbents for humics removal from water: isotherm study
Creators: name: Stanford, Cecile Andre
name: Khraisheh, Majeda
name: Al Momani, Fares
name: Albadarin, Ahmad B.
name: Walker, Gavin M.
name: Al Ghouti, Mohammad A.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Environmental engineering
subject: FOS: Environmental engineering

description: The adsorption of humic substances on three different adsorbents was investigated and adsorption isotherms were applied in this research. The three adsorbents studied include granular activated carbon (GAC), ferric oxihydroxide in its beta form (β-FeOOH) and iron-coated activated alumina (AAFS). Physical and chemical characteristics of the adsorbents were also fully investigated. Calcium was added to the HS solution in order to represent water with a hardness equivalent to water hardness typically found in London (UK). The examination of the GAC indicated a large microporous area with lower surface area associated with meso- and macropores. The AAFS and β-FeOOH did not present any microporous area. The overall surface area was high for GAC (980 m2 g−1) but lower for AAFS (286 m2 g−1) and β-FeOOH (360 m2 g−1). The Freundlich isotherm model was fitted to all adsorbent–adsorbate systems. It was shown that GAC offered a large adsorption capacity for removal of low molecular weight humics F1 (MW 0–5 kDa) but not for substances with molecular weight larger than 10 kDa (F3). The β-FeOOH adsorption capacity was only 0.43 mg g−1, compared with 9.11 and 2.55 mg g−1 on GAC and AAFS, respectively. On the contrary, F1 is not well adsorbed and only F2 (5–10 kDa) can be efficiently removed by AAFS and β-FeOOH. It was strongly suggested that precipitation/condensation occurred on the adsorbent surface.Other Information Published in: Emergent Materials
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s42247-020-00083-4
Cloud Enhancement Phenomenon and Its Effect on PV Generators
Creators: name: Järvelä, M.
name: Lappalainen, K.
name: Valkealahti, S.
Publisher: name: WIP
Year: 2018
Subjects: PV Systems - Performance, Applications and Integration
Design and Installation of PV Systems

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 1964-1968
description: Due to the cloud enhancement (CE) phenomenon, global horizontal irradiance can exceed the clear sky irradiance value. Enhanced irradiance areas are formed when photons are scattering from the water droplets in clouds near the direct irradiance path. The CE is well-known as a phenomenon, but its effect on photovoltaic (PV) generators has not been thoroughly studied. Output power of a PV generator is almost directly proportional to the irradiance. Therefore, due to the CE phenomenon, output power of a PV generator can exceed the nominal power, which affects the requirements set to the inverter. We used irradiance measurement data of 440 days from an array of pyranometers to calculate the speeds and movement directions of cloud shadows to deduce the diameters of enhancement areas. During the CE events, the irradiance values were occasionally more than 150% of the expected clear sky irradiance value. We discovered that the diameters of these extreme irradiance areas are tens of meters and, therefore, they can have a full effect on residential or commercial scale PV systems. Utility scale PV generators are in practice affected more by less extreme CE events with larger diameters, since spatial smoothing by the large generator area decreases the effects of the extreme events.
title: Cultural Identity and Creolized religion in Sligoville, Jamaica's first Baptist free village
Creators: name: Davis-Palmer, Yvonne Lois
Publisher: name: Goldsmiths, University of London
Year: 2004

description: This thesis examines identity formation in Sligoville, Jamaica's first Baptist free village. It charts the complex social processes that Sligovillians utilise in order to shape cultural identity. It also shows how these processes are characterised by notions grounded in the construction of place, the sustaining of history and a particular sense of community. This study explores how, for the ex-slaves, Sligoville in the post-emancipation era represented a place where they could belong, hold citizenship and establish autonomy. It also explores how these freed settlers drew on their lived experiences, before and after emancipation, to adapt and create new ways of being. These ways of being were often forged in response to socio-economic and cultural forces that marginalised them and militated against their hope for dignity and security. Whilst evolving new ways of being, the Sligovillians established processes of community formation that were central to the development of free villages on the Caribbean island of Jamaica. The process of creolization provided the framework within which cultural identity and changes to identity could evolve. Specifically, we see how Revivalism, an indigenous creolized religion, enabled Sligovillians to maintain elements of African cosmologies and religious practices within European Christian institutions. However, Sligovillians; continue to draw upon the process of creolization in order to create new modes of cultural and religious practice. For example, the emergence of New Revival Pentecostalism from within the Pentecostal churches in Sligoville reveals that indigenous religious practices persist. Additionally, it shows that Sligovillians use the Pentecostal churches to validate and authenticate Revivalism, a creolized. religion. An exploration of the process of creolization is, therefore, fundamental to this research. Creolization plays a major role in Caribbean ethnography. As such, I use it here to consider how the Sligoville's socio-economic and cultural processes are adapted and transformed through time.
Physical functionalization of multi-walled carbon nanotubes for enhanced dispersibility in aqueous medium
Creators: name: Youssry, Mohamed
name: Al-Ruwaidhi, Maisa
name: Zakeri, Mahdiyeh
name: Zakeri, Mohadese
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Environmental engineering
subject: FOS: Environmental engineering

description: Noncovalent functionalization of multi-walled carbon nanotubes (MWCNTs) by anionic surfactants (sodium dodecylbenzene sulfonate; SDBS and sodium cholate; SC) results in stable aqueous dispersions. SDBS showed better dispersing efficiency at lower concentration than that of SC due to the stabilizing π-π stacking induced by the presence of benzene ring in the tail of SBDS. The hemimicelle formation on the surface of nanotubes is likely to be the dominant dispersion mechanism that imparts higher colloidal stability for the MWCNTs in aqueous medium.Other Information Published in: Emergent Materials
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s42247-020-00076-3
Die (Wieder-)Entdeckung der jüdischen Wurzel des christlichen Glaubens am Beispiel von Franz Julius Delitzsch
Creators: name: Uschomirski, Anatoli
Publisher: name: Lutherische Beiträge
Year: 1970

description: Lutherische Beiträge, Bd. 16 Nr. 3 (2011): Lutherische Beiträge, Band 16, Heft 3
A Simple and Effective Inequality Measure
Creators: name: Prendergast, Luke A.
name: Staudte, Robert G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Ratios of quantiles are often computed for income distributions as rough measures of inequality, and inference for such ratios have recently become available. The special case when the quantiles are symmetrically chosen; that is, when the p/2 quantile is divided by the (1-p/2), is of special interest because the graph of such ratios, plotted as a function of p over the unit interval, yields an informative inequality curve. The area above the curve and less than the horizontal line at one is an easily interpretable coefficient of inequality. The advantages of these concepts over the traditional Lorenz curve and Gini coefficient are numerous: they are defined for all positive income distributions, they can be robustly estimated and distribution-free confidence intervals for the inequality coefficient are easily found. Moreover the inequality curves satisfy a median-based transference principle and are convex for many commonly assumed income distributions.
description: 20 pages, 9 figures
Analyzing the Impact of Access Point Density on the Performance of Finite-Area Networks
Creators: name: Banani, S. Alireza
name: Eckford, Andrew W.
name: Adve, Raviraj S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Assuming a network of infinite extent, several researchers have analyzed small-cell networks using a Poisson point process (PPP) location model, leading to simple analytic expressions. The general assumption has been that these results apply to finite-area networks as well. However, do the results of infinite-area networks apply to finite-area networks? In this paper, we answer this question by obtaining an accurate approximation for the achievable signal-to-interference-plus-noise ratio (SINR) and user capacity in the downlink of a \textit{finite-area} network with \textit{a fixed number of} access points (APs). The APs are uniformly distributed within the area of interest. Our analysis shows that, crucially, the results of infinite-area networks are very different from those for finite-area networks of low-to-medium AP density. Comprehensive simulations are used to illustrate the accuracy of our analysis. For practical values of signal transmit powers and AP densities, the analytic expressions capture the behavior of the system well. As an added benefit, the formulations developed here can be used in parametric studies for network design. Here, the analysis is used to obtain the required number of APs to guarantee a desired target capacity in a finite-area network.
description: This article has been accepted for publication in a future issue of the journal of IEEE Transactions on Communications, but has not been fully edited. Content may change prior to final publication
Unique Soiling Detection System for PV Modules
Creators: name: Korevaar, M.
name: Mes, J.
name: Alami Merrouni, A.
name: Bergmans, T.
name: Nepal, P.
name: Van Mechelen, X.
Publisher: name: WIP
Year: 2018
Subjects: PV Systems - Performance, Applications and Integration
Operation, Performance and Maintenance of PV Systems

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 1988-1990
description: In recent years, photovoltaic panels have emerged as one of the leading renewable energy technologies. PV
plant performance is, aside from hardware, determined by three main parameters: irradiance, temperature and soiling. For
soiling measurement, existing systems use cleaned and uncleaned PV panels or cells. These systems require manual
cleaning or moving parts or liquids. We present the DustIQ for accurate and effective soiling measurement without these
drawbacks. The DustIQ uses the Optical Soiling Measurement (OSM) technology to determine the soiling. It uses a LED
and photodiode to measure the scattering signal of soiling on the top of the PV glass. We investigated the effect of grain
size on the system and no influence of the grain size on the linear relation of the DustIQ diode signal and transmission
loss was found.
The DustIQ also contains a PV cell, which allows the user to characterize for the local dust using the local dust
calibration. Test results from as test locations in Morocco show a stable operation and an increase in soiling in late spring
and summer. A preliminary comparison with a cleaned and soiled PV panel is favourable. The DustIQ is a good solution
for measuring the soiling on PV panels.
Effect of preparation method on the properties of poly(methyl methacrylate)/mesoporous silica composites
Creators: name: Sibeko, M. A.
name: Saladino, M. L.
name: Armetta, F.
name: Spinella, A.
name: Luyt, A. S.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Environmental engineering
subject: FOS: Environmental engineering

description: The preparation method of a polymer composite and the filler loading are amongst the factors that influence the properties of the final composites. This article studies the effect of these factors on the thermal stability and thermal degradation kinetics of poly(methyl methacrylate) (PMMA)/mesoporous silica (MCM-41) composites filled with small amounts of MCM-41. The PMMA/MCM-41 composites were prepared through in situ polymerisation and melt mixing methods, with MCM-41 loadings of 0.1, 0.3, and 0.5 wt.%. The presence of MCM-41 increased the thermal stability of PMMA/MCM-41 composites prepared by melt mixing, but in the case of the in situ polymerised samples, the MCM-41 accelerated the degradation of the polymer. As a result, the activation energy was low and less energy was required to initiate and propagate the degradation process of these composites. The small-angle X-ray scattering (SAXS) measurements showed that the preparation method of the composites had no influence on the pore size of MCM-41, but the PMMAs used in the two methods both had shorter chains than the MCM-41 pore size. This allowed the polymer chains to be trapped inside the pores of the filler and be immobilised, as was observed from nuclear magnetic resonance (NMR) spectroscopy. The immobilisation of the polymer chains was more significant in the in situ polymerised samples.Other Information Published in: Emergent Materials
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s42247-019-00057-1
Cremanthodium acernuum Good 1929
Creators: name: Chen, You-Sheng
name: Xu, Lian-Sheng
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Cremanthodium
Cremanthodium acernuum

description: Cremanthodium acernuum Good (1929: 284)
 Type:— CHINA. [Yunnan, Gongshan], Chawchi pass, in finer grassy intervals along the arêtes, 3900 m, 30 August 1920, R. Farrer 1876 (holotype: E00413152; isotype: E00413153).
 Distribution and habitat:— Cremanthodium acernuum is rather rare and currently known only from Gongshan and Fugong counties, northern range of Gaoligongshan Mountains, Yunnan province of China. It grows in alpine meadows on mountain ridges at elevations between 3600–3900 m above sea level.
 Phenology:—Flowering in August and possibly in early September.
 Additional specimens examined:— CHINA. Yunnan: Fugong, Yaping, mountain pass and border between China and Myanmar, 3641 m, 13 August 2016, L. S. Xu & R. Ke 160078 & 160080 (PE).
 Discussion:— Cremanthodium acernuum is a member of C. sect. Pinnatinervia ser. Cuneata Ling & Liu (Liu 1982: 52) according to Liu’s system (Liu 1982), classified on the basis of the leaf blade pinninerved, the phyllaries glabrous, the ligules cuneate, distinctly 3-lobed with truncate apex. Cremanthodium acernuum is more closely related to C. medogense Chen (2010: 757) because of its leaf blade cordate-reniform, margins acutely dentate, pappus brown, ligules cuneate and distinctly 3-lobed. However, C. acernuum differs by its heads erect (vs. nodding), ray florets white (vs. yellow), pappus as long as disc florets (vs. shorter than disc florets), leaf apex obtuse (vs. acute), and teeth sharply triangular (vs. obtuse). The main differences between C. acernuum, C. smithianum and C. medogense are summarised in Table 1.
description: Published as part of Chen, You-Sheng & Xu, Lian-Sheng, 2016, The identity of Cremanthodium acernuum and C. smithianum (Asteraceae), pp. 65-68 in Phytotaxa 278 (1) on pages 65-67, DOI: 10.11646/phytotaxa.278.1.8, http://zenodo.org/record/13651595
Stochastic series expansion simulation of the $t$-$V$ model
Creators: name: Wang, Lei
name: Liu, Ye-Hua
name: Troyer, Matthias
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We present an algorithm for the efficient simulation of the half-filled spinless $t$-$V$ model on bipartite lattices, which combines the stochastic series expansion method with determinantal quantum Monte Carlo techniques widely used in fermionic simulations. The algorithm scales linearly in the inverse temperature, cubically with the system size and is free from the time-discretization error. We use it to map out the finite temperature phase diagram of the spinless $t$-$V$ model on the honeycomb lattice and observe a suppression of the critical temperature of the charge density wave phase in the vicinity of a fermionic quantum critical point.
description: updated reference
Joint effect of polarization and the propagation path of a light beam on its intrinsic structure
Creators: name: Abdulkareem, Sarkew
name: Kundikova, Nataliya
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The well-known effects of the spin-orbit interaction of light are manifestations of pair mutual influence of the three types of the angular momentum of light, namely, the spin angular momentum, the extrinsic orbital angular momentum and the intrinsic orbital angular momentum. Here we propose the convenient classification of the effects of the spin-orbit interaction of light and we observe one of the new effects in the frame of this classification, which is determined by the joint influence of two types of the angular momentum on the third type of the angular momentum, namely, the influence of the spin angular momentum and the extrinsic orbital angular momentum on the intrinsic orbital angular momentum. We experimentally studied the propagation of circularly polarized light through an optical fiber coiled into a helix. We have found that the spin angular momentum and the helix parameters affect the spatial structure of the radiation transmitted through the optical fiber. We found out that the structure of the light field rotates when changing the sign of circular polarization. The angle of rotation depends on the parameters of the helix. The results can be used to develop the general theory of spinning particles and can find application in metrology methods and nanooptics devices.
New Photovoltaic System Based on Solar Radiation Splitting Technology
Creators: name: Tonezzer, M.
name: Bernardoni, P.
name: Vincenzi, D.
name: Decarli, P.
Publisher: name: WIP
Year: 2018
Subjects: PV Systems - Performance, Applications and Integration
Design and Installation of PV Systems

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 1953-1956
description: The University of Ferrara (UNIFE) and the company Trentino Rainbow Energy S.r.l. (TRE) have developed and patented [1] a concentrating photovoltaic prototype (CPV) based on solar spectrum splitting (SSS). The focused beam produced by the concentrating optics is split in two by a short pass dichroic mirror; the resulting infrared beam is reflected on a monocrystalline silicon solar cell while the visible part of the spectrum is focused on a gallium arsenide (GaAs) cell. The experimental results show that this approach is less sensitive than triple junction solar cells (3J) to the changes in solar spectrum typically associated to the last hours of the day or to the presence of haze.
Swelling-induced twisting and shearing in fiber composites: the effect of the base matrix mechanical response
Creators: name: Demirkoparan, Hasan
name: Pence, Thomas J.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Environmental engineering
subject: FOS: Environmental engineering

description: If a helical network of fibers is embedded in a swellable matrix, and if the fibers themselves resist swelling, then a change in the amount of swelling agent will cause a corresponding twisting motion in the material. This effect has recently been analyzed in highly deformable soft material tubes using the theory of hyperelasticity, suitably modified to incorporate the swelling effect. Those studies examined the effect of spiral angle and fiber-to-matrix inherent stiffness in the context of a ground state matrix material that exhibited classical neo-Hookean behavior in the absence of swelling. While such a ground state material is nonlinear in general, its shear response is linear. As we describe here, it is this shear response that governs the matrix contribution to the twist-swelling interaction. Because gels, elastomers, and even biological tissue can exhibit complex ground state behavior in shear—behavior that may depart significantly from a linear response—we then examine the effect of alternative ground state behaviors on the twist-swelling interaction. The range of behaviors considered includes materials that harden in shear, materials that soften in shear, materials that have an ultimate shear stress bound, and materials that collapse in shear. Matrix materials that either soften or collapse in shear are found to amplify the twisting effect.Other Information Published in: Emergent Materials
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s42247-019-00053-5
Design and Indoor Validation of "DUSST": A Novel Low-Maintenance Soiling Station
Creators: name: Muller, M.
name: Morse, J.
name: Almonacid, F.
name: Fernández, E.F.
name: Micheli, L.
Publisher: name: WIP
Year: 2018
Subjects: PV Systems - Performance, Applications and Integration
Operation, Performance and Maintenance of PV Systems

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 1991-1995
description: Soiling can cause significant losses to photovoltaic systems, and therefore it has to be carefully monitored. Currently, the most common soiling monitoring technologies are soiling stations that use the electrical outputs of a regularly cleaned PV device and of a naturally soiled PV device to quantify soiling. A new class of low-maintenance soiling stations has now been launched in the market to lower the cost and increase the reliability of soiling monitoring. In this work, the design, and the indoor validation of “DUSST” (Detector Unit for Soiling Spectral Transmittance), a new low-maintenance soiling station, are presented. DUSST projects a collimated monochromatic light through a glass surface and on to a light detector to measure the intensity of the transmitted light. As the glass surface naturally soils, the losses are quantified by comparing this soiled reading with a calibrated reading in the baseline clean condition.
Cremanthodium smithianum , Handel-Mazzetti 1925
Creators: name: Chen, You-Sheng
name: Xu, Lian-Sheng
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Cremanthodium
Cremanthodium smithianum

description: Cremanthodium smithianum Handel-Mazzetti (1925: 14)
 Type:— CHINA. Yunnan, Lijiang, Yulungschan, Jun–Sept. 1914 –1916, H. Handel-Mazzetti 3635 (lectotype designated here: WU0059336; isolectotypes: K000802862, S08-8610).
 Discussion:—In the protologue of Cremanthodium smithianum, Handel-Mazzetti (1925) cited an early photo (Vierhapper 1923: Tab. IV, fig. 3) of one specimen (H. Handel-Mazzetti 3635) of this species. In Vierhapper’s early publication, the specimen’s photo was only noted as “ Cremanthodium sp. (aff. bulbilliferum W. W. Sm.)”. This was also indicated by Good (1929). So there was no basionym for the name C. smithianum. Handel-Mazzetti (1925) cited several specimens, including H. Handel-Mazzetti 3635, H. Handel-Mazzetti 4729 (from Dschungdien, Yunnan), H. Handel-Mazzetti 8358 (from Yungning, Yunnan), G. Forrest 6535 (from Lijiang, Yunnan), G. Forrest 6613 (from Lijiang, Yunnan), all being syntypes of C. smithianum. Here we designate H. Handel-Mazzetti 3635 as the lectotype because it most closely conforms to the original description.
description: Published as part of Chen, You-Sheng & Xu, Lian-Sheng, 2016, The identity of Cremanthodium acernuum and C. smithianum (Asteraceae), pp. 65-68 in Phytotaxa 278 (1) on page 68, DOI: 10.11646/phytotaxa.278.1.8, http://zenodo.org/record/13651595
Predicting Chroma from Luma with Frequency Domain Intra Prediction
Creators: name: Egge, Nathan E.
name: Valin, Jean-Marc
Publisher: name: arXiv
Year: 2016
Subjects: subject: Multimedia (cs.MM)
subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: This paper describes a technique for performing intra prediction of the chroma planes based on the reconstructed luma plane in the frequency domain. This prediction exploits the fact that while RGB to YUV color conversion has the property that it decorrelates the color planes globally across an image, there is still some correlation locally at the block level. Previous proposals compute a linear model of the spatial relationship between the luma plane (Y) and the two chroma planes (U and V). In codecs that use lapped transforms this is not possible since transform support extends across the block boundaries and thus neighboring blocks are unavailable during intra-prediction. We design a frequency domain intra predictor for chroma that exploits the same local correlation with lower complexity than the spatial predictor and which works with lapped transforms. We then describe a low-complexity algorithm that directly uses luma coefficients as a chroma predictor based on gain-shape quantization and band partitioning. An experiment is performed that compares these two techniques inside the experimental Daala video codec and shows the lower complexity algorithm to be a better chroma predictor.
description: 10 pages, 7 figures
PHOTOPUR - PV Powered Water Decontamination for Wine Growers
Creators: name: Da Costa Fernandes, J.
name: Schmidt, M.
name: Bollin, E.
name: Ziebold, F.
name: Lapp, S.
Publisher: name: WIP
Year: 2018
Subjects: PV Systems - Performance, Applications and Integration
Design and Installation of PV Systems

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 1957-1963
description: An energy oriented design concept was developed within the research project PHOTOPUR which has the
development of a PV powered water cleaning system as main focus. During a wine season Plant Protection Products
(PPP) are several times sprayed on plants to protect them of undesired insects and herbs or avoid hazardous fungus
types. A work package of the project partner INES in Offenburg led to a design concept introducing an energy
profiling already in the early beginning of a product design. The concept is based on three pillars respecting first the
requirements of the core process making up filtering and cleaning and secondary aspects which run, support, maintain
and monitor the system to secure availability and product reliability. Finally the composed energy consumption
becomes a product specific load profile. After analyzing product process and the energy supply conditions
assumptions mainly using data sheets were taken to define media and energy flows. Single components and
functional groups compose the load profile and are therefore monitored. In a parallel step local conditions of a
photovoltaic energy supply were gathered to be included in the system model of a design tool. The tool should help to
evaluate technical design parameters and viability. It also enables a view on economic efficiency of competing power
supply configurations i.e. solar-battery-combinations. The presented paper shows that the results of the design tools
guided the developers to assemble a functional model of the water decontamination unit which was manually tested
with its concatenated steps of the water cleaning process.
New Approach for the Design of Large Scale Photovoltaic Plants Which Takes into Account the Integration of Project Data, Tools and Cost Analysis through the Digitalization of the Processes
Creators: name: Guida, D.
name: Carbone, M.
name: Latella, S.
Publisher: name: WIP
Year: 2018
Subjects: PV Systems - Performance, Applications and Integration
Design and Installation of PV Systems

description: 35th European Photovoltaic Solar Energy Conference and Exhibition; 1969-1972
description: Digitalization goes beyond business and is entering in various technical and social activities through tools and technologies. The aim of this paper is to show how the digital transformation can be applied also in the photovoltaic business describing what we call Conceptual Design. The first part of the paper describes the main steps of the conceptual design process: the evaluation of the main project data such as site constraints and main equipment, definition of the main parameters of PV (Photovoltaic) configuration like DC/AC and Ground Cover Ratio (GCR) and the research of the final configuration with minimum Levelized Cost of Electricity (LCOE). The second part explains how the optimization tools will be digitalized and automatized describing criticalities, risks and opportunities. The last part shows the benefits of digital transformation in term of design timing reduction and better control of project assumptions and results checking their coherence and feasibility.