cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Electrochemical Determination of Vitamin B12 (Cyanocobalamin) using Mercury Nanodroplets Supported at Montmorillonite on a Carbon Paste Electrode (CPE)
Creators: name: Souza, Lismery P.
name: Lima, Alan R. F.
name: Martins, Thomas A. C.
name: Vicentini, Fernando Campanhã
name: Marcolino-Junior, Luiz Humberto
name: Bergamini, Márcio F.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Inorganic Chemistry

description: A simple and effective electrochemical sensor for cobalt using mercury nanodroplets supported on montmorillonite (MMT) was developed. Physical analyses allowed the identification of crystalline structure, morphology, and presence of mercury structures in MMT-Hg2+ with nanometric dimensions between 3 and 11 nm. Electrochemical responses obtained by differential pulse anodic stripping voltammetry (DPASV) using carbon paste electrode modified with montmorillonite decorated with mercury nanodroplets (CPEM-MT-Hg) toward cobalt (II) provide a limit of detection (LOD) of 3.4 × 10−6 mol L−1, limit of quantification (LOQ) of 1.1 × 10−5 mol L−1, and a linear dynamic range (LDR) from 3.5 × 10−5 to 2.9 × 10−4 mol L−1. The developed method was applied to the determination of cobalt ions in a commercial vitamin B12 sample.
Design and Control of DC-DC Grid-Connected Converter for Photovoltaic Power
Creators: name: Wang, Y.
name: Ju, C.
name: Huan, W.
name: Shanshan, M.
Publisher: name: WIP
Year: 2015
Subjects: OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Balance of System Components

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2353-2357
description: Due to benefits of fewer equipment, higher efficiency and less grid constraints, the demand of PV directly
integrating into HVDC is arising and the study on DC/DC converter for PV is in need. In this paper, DC/DC converter
topology interfaced into DC grid is reviewed, and a topology based on Boost-Full-Bridge-Isolated (BFBIC) and the
architecture of modular Input-Parallel-Output-Serial are proposed. Soft switching characteristic of BFBIC is studied and a
zero-voltage-switch (ZVS) strategy is proposed to improve converter efficiency. Feature of Natural-Current-Sharing-Voltage-
Sharing (NCSVS) of the BFBIC is analyzed, and the stability criterion and the quantitative evaluation method of the NCSVS
are given. Finally, a 200kW ±10kV DC/DC grid-connected converter is developed for verifying the feasibility.
Interaction Between Convection and Pulsation
Creators: name: Houdek, Günter
name: Dupret, Marc-Antoine
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: This article reviews our current understanding of modelling convection dynamics in stars. Several semi-analytical time-dependent convection models have been proposed for pulsating one-dimensional stellar structures with different formulations for how the convective turbulent velocity field couples with the global stellar oscillations. In this review we put emphasis on two, widely used, time-dependent convection formulations for estimating pulsation properties in one-dimensional stellar models. Applications to pulsating stars are presented with results for oscillation properties, such as the effects of convection dynamics on the oscillation frequencies, or the stability of pulsation modes, in classical pulsators and in stars supporting solar-type oscillations.
description: Invited review article for Living Reviews in Solar Physics. 88 pages, 14 figures
Headspace determination of the volatile organic compounds (VOCs) emitted by host plants of the brown marmorated stink bug Halyomorpha halys
Creators: name: Koutsogeorgiou, Eleni I.
name: Kouloussis, Nikos A.
name: Sarrou, Eirini
name: Andreadis, Stefanos S.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Plant Biology

description: The emission of volatile organic compounds (VOCs) from plants is associated with biotic and abiotic stress and depends on the plant species, organs, and developmental stage. Insects use VOCs to locate their host plants and their behavior is heavily influenced by the chemical profile of each at its current phenological stage. The brown marmorated stink bug Halyomorpha halys (Hemiptera: Pentatomidae) is a highly polyphagous pest that causes significant damage to tree, vegetable, and ornamental crops worldwide. The volatile profiles of five hosts of H. halys were compared for common substances to provide insight into this insect’s extreme polyphagy. Headspace collection of volatile substances was performed for five hosts of H. halys by gas chromatography – mass spectrometry (GC-MS), and their VOC profiles were compared. The results show that, although the volatile profiles of the host plants differ substantially, 13 out of the 68 identified compounds were shared. These results suggest that host recognition by H. halys is likely driven by a combination of attractive and possibly repellent compounds that work synergistically which is the first step toward decoding this pest’s polyphagous nature.
All-electrical generation and control of odd-frequency s-wave Cooper pairs in double quantum dots
Creators: name: Burset, Pablo
name: Lu, Bo
name: Ebisu, Hiromi
name: Asano, Yasuhiro
name: Tanaka, Yukio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We propose an all-electrical experimental setup to detect and manipulate the amplitude of odd-frequency pairing in a double quantum dot. Odd-frequency pair amplitude is induced from the breakdown of orbital symmetry when Cooper pairs are injected in the double dot with electrons in different dots. When the dot levels are aligned with the Fermi energy, i.e., on resonance, nonlocal Andreev processes are directly connected to the presence of odd-frequency pairing. Therefore, their amplitude can be manipulated by tuning the level positions. Detection of nonlocal Andreev processes by conductance measurements contributes a direct proof of the existence of odd-frequency pair amplitude and is available using current experimental techniques.
description: 10 pages, 5 figures
Survey on Specific Yield of Photovoltaic Systems in France 2014
Creators: name: Gromaire, M.
name: Te Heesen, H.
Publisher: name: WIP
Year: 2015
Subjects: OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Operation of PV Systems and Plants

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2315-2317
description: We present a survey on specific yield of PV systems in France. The analysis uses measured data of more than
1564 PV systems located in France. The data represents the potential yield, which PV systems should have reached in 2014.
We use specific yield and radiation data for each month. Nevertheless, before starting the analysis of the data of French PV
systems we need to clean this data in order to get high quality data for the evaluation. Thus, the data has been analyzed by a
five-step algorithm to consider only PV systems without any malfunction. The evolution of specific yield represents the
energy production of PV systems in France if the systems have been planned, built and operated professionally. The comparison
of the yield data shows that more than 80 % of all PV systems in France do not reach their full potential due to defects
from the planning, construction and operating phases.
Spin-dependent Seebeck Effect in Aharonov-Bohm Rings with Rashba and Dresselhaus Spin-orbit Interactions
Creators: name: Liu, Bin
name: Li, Yunyun
name: Zhou, Jun
name: Nakayama, Tsuneyoshi
name: Li, Baowen
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We theoretically investigate the spin-dependent Seebeck effect in an Aharonov-Bohm mesoscopic ring in the presence of both Rashba and Dresselhaus spin-orbit interactions under magnetic flux perpendicular to the ring. We apply the Green's function method to calculate the spin Seebeck coefficient employing the tight-binding Hamiltonian. It is found that the spin Seebeck coefficient is proportional to the slope of the energy-dependent transmission coefficients. We study the strong dependence of spin Seebeck coefficient on the Fermi energy, magnetic flux, strength of spin-orbit coupling, and temperature. Maximum spin Seebeck coefficients can be obtained when the strengths of Rashba and Dresselhaus spin-orbit couplings are slightly different. The spin Seebeck coefficient can be reduced by increasing temperature and disorder.
description: 13 pages, 6 figures
Suppression of Limit Cycle Oscillations using the Nonlinear Tuned Vibration Absorber
Creators: name: Habib, Giuseppe
name: Kerschen, Gaetan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: The objective of the present study is to mitigate, or even completely eliminate, the limit cycle oscillations in mechanical systems using a passive nonlinear absorber, termed the nonlinear tuned vibration absorber (NLTVA). An unconventional aspect of the NLTVA is that the mathematical form of its restoring force is not imposed a priori, as it is the case for most existing nonlinear absorbers. The NLTVA parameters are determined analytically using stability and bifurcation analyses, and the resulting design is validated using numerical continuation. The proposed developments are illustrated using a Van der Pol-Duffing primary system.
Lifshitz symmetry: Lie algebras, spacetimes and particles
Creators: name: Figueroa-O'Farrill, José
name: Grassie, Ross
name: Prohazka, Stefan
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study and classify Lie algebras, homogeneous spacetimes and coadjoint orbits ("particles") of Lie groups generated by spatial rotations, temporal and spatial translations and an additional scalar generator. As a first step we classify Lie algebras of this type in arbitrary dimension. Among them is the prototypical Lifshitz algebra, which motivates this work and the name "Lifshitz Lie algebras". We classify homogeneous spacetimes of Lifshitz Lie groups. Depending on the interpretation of the additional scalar generator, these spacetimes fall into three classes: (1) ($d+2$)-dimensional Lifshitz spacetimes which have one additional holographic direction; (2) ($d+1$)-dimensional Lifshitz--Weyl spacetimes which can be seen as the boundary geometry of the spacetimes in (1) and where the scalar generator is interpreted as an anisotropic dilation; and (3) ($d+1$)-dimensional aristotelian spacetimes with one scalar charge, including exotic fracton-like symmetries that generalise multipole algebras. We also classify the possible central extensions of Lifshitz Lie algebras and we discuss the homogeneous symplectic manifolds of Lifshitz Lie groups in terms of coadjoint orbits.
description: 30 pages, 2 figures. (v2: added some references and acknowledgments, v3: various minor updates)
Novel MPPT Algorithm for PV Systems under Fast Weather Variations
Creators: name: Chapalain, N.
name: Voyer, N.
name: Koyama, M.
name: Yamamoto, H.
name: Nagato, S.
Publisher: name: WIP
Year: 2015
Subjects: OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Balance of System Components

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2343-2347
description: This paper presents a novel MPPT (Maximum Power Point Tracking) algorithm, called High Response
(HR) MPPT, with high tracking capabilities under fast weather conditions. In this paper, the HR MPPT method is
first described and then evaluated and compared with other MPPT methods from the literature. It is evaluated by
software simulation and with hardware experiment under the EN 50530 European standardised time varying
irradiance test profiles. Furthermore, these MPPT algorithms were evaluated on a photovoltaic (PV) experimental and
simulation platform using the record of real PV curves and thus enabling their comparison under same realistic
weather conditions. The results shows that the HR MPPT brings an improvement in terms of MPPT efficiency
compared with other MPPT algorithms under same real weather conditions.
Efficient and Accurate Top-$K$ Recovery from Choice Data
Creators: name: Nguyen, Duc
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: The intersection of learning to rank and choice modeling is an active area of research with applications in e-commerce, information retrieval and the social sciences. In some applications such as recommendation systems, the statistician is primarily interested in recovering the set of the top ranked items from a large pool of items as efficiently as possible using passively collected discrete choice data, i.e., the user picks one item from a set of multiple items. Motivated by this practical consideration, we propose the choice-based Borda count algorithm as a fast and accurate ranking algorithm for top $K$-recovery i.e., correctly identifying all of the top $K$ items. We show that the choice-based Borda count algorithm has optimal sample complexity for top-$K$ recovery under a broad class of random utility models. We prove that in the limit, the choice-based Borda count algorithm produces the same top-$K$ estimate as the commonly used Maximum Likelihood Estimate method but the former's speed and simplicity brings considerable advantages in practice. Experiments on both synthetic and real datasets show that the counting algorithm is competitive with commonly used ranking algorithms in terms of accuracy while being several orders of magnitude faster.
Consultoría Construdiseños Gpiedrahita S.A.S.
Creators: name: Paz Velásquez, Víctor Alfonso
name: Vallejo Maya, María Mercedes
Publisher: name: Universidad Externado de Colombia
Year: 2022
Subjects: subject: Mobiliario urbano
subject: Administración de mercadeo
subject: Negocios
subject: Plan estratégico de mercadeo
subject: Plan padrinos maestría en mercadeo
subject: Sector fabricación de muebles
subject: Diversificación
subject: Mobiliario personalizado

description: Construdiseños Gpiedrahita S.A.S., ubicada en Bogotá, D.C., Colombia, es una empresa del sector de la Fabricación de Muebles para clientes B2B que se encuentra en la búsqueda de estrategias de Mercadeo. El documento propone un Plan de Marketing para diversificar su portafolio, ofreciendo soluciones innovadoras de mobiliario personalizado como resultado de la consultoría que se realizó a partir del análisis de la empresa y del sector.
description: Construdiseños Gpiedrahita S.A.S., located in Bogotá, D.C., Colombia, is a company in the Furniture Manufacturing sector for B2B clients that is looking for Marketing strategies. The document proposes a Marketing Plan to diversify its portfolio, offering innovative customized furniture solutions as a result of the consultancy that was carried out based on the analysis of the company and the sector.
A Fuzzy Logic Based Supervision of Photovoltaic Energy Storage Using Battery-Supercapacitor
Creators: name: Cabrane, Z.
name: Ouassaid, M.
name: Maaroufi, M.
Publisher: name: WIP
Year: 2015
Subjects: OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Balance of System Components

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2361-2365
description: Solar energy is becoming a promising energy source due to its abundance and accessibility. However
its utilization causes uncontrollable fluctuations in power generation. Hence the energy storage is needed. In this
paper, a hybrid architecture comprising a combination of batteries and supercapacitors for storage energy is proposed.
The aim is to ensure the voltage regulation of DC Bus with an energy management by using a fuzzy logic supervisor
to manage the power flow between the hybrid system devices and maintaining the state of charge of the batteries
and supercapacitors at the acceptable levels.
Evolution and control of the phase competition morphology in a manganite film
Creators: name: Zhou, Haibiao
name: Wang, Lingfei
name: Hou, Yubin
name: Huang, Zhen
name: Lu, Qingyou
name: Wu, Wenbin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The competition among different phases in perovskite manganites is pronounced since their energies are very close under the interplay of charge, spin, orbital and lattice degrees of freedom. To reveal the roles of underlying interactions, many efforts have been devoted towards directly imaging phase transitions at microscopic scales. Here we show images of the charge-ordered insulator (COI) phase transition from a pure ferromagnetic metal with reducing field or increasing temperature in a strained phase-separated manganite film, using a home-built magnetic force microscope. Compared with the COI melting transition, this reverse transition is sharp, cooperative and martensitic-like with astonishingly unique yet diverse morphologies. The COI domains show variable-dimensional growth at different temperatures and their distribution can illustrate the delicate balance of the underlying interactions in manganites. Our findings also display how phase domain engineering is possible and how the phase competition can be tuned in a controllable manner.
description: Published version
Pteropus personatus Temminck 1825
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Pteropus
Pteropus personatus

description: Pteropus personatus Temminck, 1825. Monogr. Mamm., 1:189. TYPE LOCALITY: Indonesia, Molucca Isis, Ternate. DISTRIBUTION: Halmahera Isis (Indonesia). The Sulawesi record is erroneous; see Bergmans and Rozendaal (1988:65). STATUS: CITES - Appendix II.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 149, DOI: 10.5281/zenodo.7353060
description: {"references": ["Bergmans, W., and F. G. Rozendaal. 1988. Notes on collections of fruit bats from Sulawesi and some off-lying Islands (Mammalia; Megachiroptera). Zoologische Verhandelingen (Leiden), 248: 1 - 74."]}
Independent Verification of a Method Using Free Software for Simulation of Complex Shaped Photovoltaics
Creators: name: Lovati, M.
name: Belluardo, G.
name: Ingenhoven, P.
name: Maturi, L.
name: Moser, D.
Publisher: name: WIP
Year: 2015
Subjects: OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Operation of PV Systems and Plants

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2323-2326
description: In this paper a comparison between the power output (Pdc) of a cylindrical-shaped thin film CIGS PV
system and the equivalent model implemented with the tool Radiance is presented. The simulation is ran for a one year
PV production period and both Pdc profiles for specific days (summer vs winter clear sky days, clear sky vs cloudy or
very cloudy days) and the overall model performance are analyzed. The objective is to verify the accuracy and the
usefulness of the software Radiance in providing data for the estimation of the power output of complex shaped PV.
Radiance could then be included in software tools for the estimation of power production in building and product
integrated photovoltaics.
Results suggests that the method is promising for the adoption in the BiPV segment although a critical construction of
the model is still crucial to enable sufficiently good results; this makes fully automated process still difficult to reach.
In addition, the wiring strategy needs to be simulated with higher detail.
National Solar Repository – 5-year Country-Wide Assessment of PV Systems’ Performance in Singapore
Creators: name: Baker, R.S.
name: Bieri, M.
name: Cher, W.K.
name: Zhang, K.
name: Rüther, R.
name: Reindl, T.
name: Nobre, A.M.
Publisher: name: WIP
Year: 2015
Subjects: OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Operation of PV Systems and Plants

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2332-2334
description: A majority of the existing solar photovoltaic (PV) systems are located in temperate climate zones but
there has been a considerable growth in the number of PV systems in the tropics in the last few years. While a
significant amount of research has been done on the performance of PV systems in temperate weather conditions,
corresponding research for tropical climates has been limited due to the lack of data over longer time periods. This
work aims at analyzing the performance metrics of rooftop PV systems in a tropical country like Singapore (1.3° N,
103.8° E) based on the data collected from 2010 through 2014 by the National Solar Repository (NSR). A total of 43
systems with an installed capacity of 8 MWp were analyzed in this study. The performance of these systems was
investigated based on the calculation of the performance ratio (PR). This paper also discusses possible reasons for the
low performance of certain systems to increase the knowledge base for future installations.
Ultrafast carbon nanotube photodetectors with bandwidth over 60 GHz
Creators: name: Wu, Weifeng
name: Yang, Fan
name: Fang, Xiansong
name: Cai, Xiang
name: Liu, Xiaohui
name: Zhang, Fan
name: Wang, Sheng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Emerging Technologies (cs.ET)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The future interconnect links in intra- and inter-chip require the photodetector with high bandwidth, ultra-wide waveband, compact footprint, low-cost, and compatible integration process with silicon complementary metal-oxide-semiconductor (CMOS) technology. Here, we demonstrate a CMOS-compatible carbon nanotube (CNT) photodetector that exhibits high responsivity, high bandwidth and broad spectral operation over all optical telecommunication band based on high-purity CNT arrays. The ultrafast CNT photodetector demonstrates the 100 Gbit/s Nyquist-shaped on-off-keying (OOK) signal transmission, which can address the demand for high-speed optical interconnects in and between data centers. Furthermore, the photodetector exhibits a bandwidth over 60 GHz by scaling down the active area to 20 μm2. As the CNT photodetectors are fabricated by doping-free process, it also provides a cost-effective solution to integrate CNT photonic devices with CNT-based CMOS integrated circuits. Our work paves a way for future CNT-based high-speed optical interconnects and optoelectronic integrated circuits (OEICs).
description: 29 pages
Impact of Environmental Conditions on the Performance of a 300 kWp Solar PV Plant in Djibouti
Creators: name: Hassan Daher, D.
name: Gaillard, L.
name: Ménézo, C.
name: Amara, M.
Publisher: name: WIP
Year: 2015
Subjects: OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Operation of PV Systems and Plants

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2335-2339
description: The impact of environmental conditions (temperature, dust) on the performance of a 300 kWp PV
power plant operating in Djibouti since 2012 is presented in this work. The final yield (Yf) ranges from 3.5 h/d and
5.3 h/d giving and annual final yield of 4.5 h/d. The performance ratio (PR) ranges between 71 and 90%. An
observation based on the evolution of the PR with ambient temperature increases showed that an increase of the
temperature of 1°C induce a decrease of 1% of the PR. The dust accumulation has a real impact on the PV
performance. In order to evaluate this impact, we observed the PR of PV array before and after a rainfall and it was
found an improve of PR of 7.4%. In addition, we present in this work a TRNSYS model based on a model from
standard library to predict the array performance. A comparison between model and measurements provide a gap of
2.36 kW. Also it was found that the predicted module temperature underestimates the measured temperature at low
irradiance (less than 250 W/m2) and overestimates for high irradiance.
Mapeando a controvérsia da cobrança de taxas de processamento de artigos (article processing charges – APC) por Acesso Aberto
Creators: name: Dias, Carolina G. S.
name: Menezes, Débora
name: Carvalho, Ana Paula da Silva
name: Silva, Danyelle Mayara
Publisher: name: Zenodo
Year: 2023

description: Apresentação realizada na sessão "Comunicação III" da 14ª Conferência Lusófona de Ciência Aberta, Natal Brasil, de 18 a 21 de setembro de 2023.
Experience, Grid Integration and Shading 25 Years of Technological and Economical Learning in PV Systems What are the Findings on the Technological and Economical Side for One Generation of PV Applications?
Creators: name: Nordmann, T.
name: Vontobel, T.
name: Lingel, R.
Publisher: name: WIP
Year: 2015
Subjects: OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Operation of PV Systems and Plants

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2340-2342
description: Long time experience by TNC Consulting over 25 years on design and operation of PV plants is used to look
back on technological, economical and performance development and give an outlook on possible future challenges. The
point of view of a system engineer is stressed, tying to take into account not only upfront costs and gains, but also
performance over time and operational costs and developments. Longtime data is presented for exemplary PV plants as well
as clustered data over a larger amount of more recent PV plants and a shorter period of time.
Overall performance and yield is analyzed in absolute numbers, development over time for exemplary PV plants (back to 25
years) and in a cross-section over numerous plants for more recent PV plants, allowing for possible outlooks on future
development. Cost structure of PV systems over 25 years shows a strong decrease in BoS as well as module and inverter
costs, but also an increase for BoS in present PV plants. In order to reduce overall PV system costs, BoS costs must be
understood correctly and reduced for future projects. Specific aspects from technological development are highlighted and
their influence on overall performance and LCOE is assessed.
The Liouville theorem and the $L^2$ decay of the FENE dumbbell model of polymeric flows
Creators: name: Wei, Luo
name: Zhaoyang, Yin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper we mainly investigate the finite extensible nonlinear elastic (FENE) dumbbell model with dimension $d\geq2$ in the whole space. We first proved that there is only the trivial solution for the steady-state FENE model under some integrable condition. Our obtained results generalize and cover the classical results to the stationary Navier-Stokes equations. Then, we study about the $L^2$ decay of the co-rotation FENE model. Concretely, the $L^2$ decay rate of the velocity is $(1+t)^{-\frac{d}{4}}$ when $d\geq3$, and $\ln^{-k}{(e+t)}, k\in \mathds{N}^{+}$ when $d=2$. This result improves considerably the recent result of \cite{Schonbek2} by Schonbek. Moreover, the decay of general FENE model has been considered.
description: 20 pages
AC and DC Monitoring of Outdoor PV Systems: Comparison of Eight Different Technologies
Creators: name: Pozza, A.
name: Trentadue, G.
name: Kenny, R.P.
name: Field, M.
Publisher: name: WIP
Year: 2015
Subjects: OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Operation of PV Systems and Plants

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2318-2322
description: Photovoltaic system monitoring in outdoor operation and data analysis are crucial to understand their
behaviour in real operation and to study the effects of several parameters such as irradiance, temperature and solar
spectrum. Outdoor operation data is also important for the development of accurate models for the prediction of
energy production. At the ESTI outdoor photovoltaic field, eight systems with different technologies have been
installed between 2007 and 2010, with the purpose of long term field aging study and for the study of performance in
real operating conditions. The installed systems include three silicon based technologies (standard polycrystalline
silicon, heterojunction and back contact) and five thin film technologies (CdTe, CIGS, a-Si single junction, a-Si
double junction and triple junction). All systems are connected to inverters and to the grid and since late 2014 are
monitored continuously in both their DC and AC parts; the temperature of each system is monitored by a PT100
sensor attached to the back of one module and irradiance is measured by a crystalline silicon reference cell.
Curtailed Energy of PV Systems – Dependency on Grid Loading Limit, Orientation and Local Energy Demand
Creators: name: Matthiss, B.
name: Stellbogen, D.
name: Eberspächer, M.
name: Binder, J.
Publisher: name: WIP
Year: 2015
Subjects: OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Operation of PV Systems and Plants

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2311-2314
description: In this paper we present a simulation study based on comprehensive measurement data sets from the ZSW test
field Widderstall to estimate the influence of grid infeed limits, orientation of the PV generator, domestic self-consumption
and battery storage on the energy yield of a PV system. For a south oriented, roof mounted c-silicon PV generator and a grid
infeed limit of 70 % of the rated PV power the curtailment losses are about 2.5 %. The yield reduction for a west-facing
system and a similar feed-in limit is a third of this value. Open-rack mounted, south-facing PV arrays show 2.5 percentage
points higher curtailment losses than building-mounted systems because of the higher operating temperature at high solar
irradiation. Considering the self-consumption of a typical household the limiting losses can be reduced by at least a third.
According to the simulation study, a battery with a capacity of 5 kWh would reduce the losses further by about 3 to 5
percentage points at injection limits of 30 % to 50 % in a system with a south-facing PV generator rated 7.5 kWp. By
doubling the battery capacity to 10 kWh approximately the same improvement can be additionally achieved.
IR Thermography Inspection of PV Modules in Large PV Plants with UAV
Creators: name: Coello, J.
name: Pérez, L.
name: Parra, V.
name: Gómez, R.
Publisher: name: WIP
Year: 2015
Subjects: OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Operation of PV Systems and Plants

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2327-2331
description: This paper presents an aerial thermography system developed by the IEC-17025 accredited laboratory
of ENERTIS. The developed system is an octocopter with flight time up to 50 minutes. Aerial thermography has been
performed on the same module with hot spots at different flight altitudes in the range of 3-40 meters to determine the
optimum altitude and resolution of the thermal imaging camera to use. The document also includes an analysis of the
measurements and their uncertainty in the test range by using sensors of 640x480 pixels and 320x240 pixels, and a
comparison between the measurements obtained by aerial thermography and by thermography on the backside of the
module. The results show that aerial thermography is a powerful tool for identifying modules with thermal anomalies
and it is a versatile means of fast and effective monitoring of the thermal behavior of photovoltaic modules in large
PV plants.
Performance of Distributed PV in the UK: a Statistical Analysis of over 7000 Systems
Creators: name: Taylor, J.
name: Leloux, J.
name: Hall, L.M.H.
name: Everard, A.M.
name: Briggs, J.
name: Buckley, A.R.
Publisher: name: WIP
Year: 2015
Subjects: OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Operation of PV Systems and Plants

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2271-2276
description: In June 2015, the UK fleet of solar photovoltaic (PV) systems reached 7.8 GWp of capacity, but there
are wide gaps in our understanding of the performance of these systems, which has lead to the conservative limit of 10
GWp being imposed on UK PV capacity by the Department of Energy and Climate Change. Here we present the results
of a statistical analysis of real world UK PV systems which donate data to the Microgen Database, of which there are
over 7000. The mean yearly-integrated Performance Ratio (PR) of domestic scale UK PV is 83% with a standard
deviation of 7%. By considering yearly-integrated PR, we have shown that 4.1 % of systems suffered long-term
underperformance relative to their nominal efficiencies during 2013. The mean degradation rate for crystalline Siliconbased
PV systems in the UK is -0.8 ± 0.1% per year. The state-of-the-art of UK PV, in terms of technology,
manufacturing, and installation-standards, is found to have increased by 1% per year between 2002 and 2013.
Pteropus phaeocephalus Thomas 1882
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Pteropus
Pteropus phaeocephalus

description: Pteropus phaeocephalus Thomas, 1882. Proc. Zool. Soc. Lond., 1881:756 [1882]. TYPE LOCALITY: Caroline Isis, Mortlock Isl (Pac. Isis Trust Terr., USA). DISTRIBUTION: Mortlock Isl (C Caroline Isis). STATUS: CITES - Appendix I; IUCN - Endangered. COMMENTS: Probably a subspecies of P. insularis.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 149, DOI: 10.5281/zenodo.7353060
Comparative Analysis of the Performance of String- and Central Inverter Topology at a Large PV Utility Plant with Varying Topography.
Creators: name: Paasch, K.M.
name: Nymand, M.
name: Kjær, S.B.
Publisher: name: WIP
Year: 2015
Subjects: OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Operation of PV Systems and Plants

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2280-2283
description: This paper presents new results from a long term measurement campaign involving synchronous high
speed recording of performance data from a series of PV-strings on a 2.1 MW PV utility plant with uneven
topography. The focus in this study is the performance of a series of string inverters (15 kW, 3 MPPT) and a series of
small central inverters (60 kW, 1 MPPT) in the same PV plant under varying irradiation conditions and also including
the potential detrimental effect of the horizontally tilt of the solar panels due to area topography variation. It has been
shown that the gain from using multiple MPPTs is low, but that the effect of topographical variations can be
substantial. The effect of a varying topography has been analyzed and it is shown that even a minor topographical
variation has a noticeable effect on energy production. The results are compared to a simulated future PV strings with
1500V string voltage.
Pteropus pilosus K. Andersen 1908
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Pteropus
Pteropus pilosus

description: Pteropus pilosus K. Andersen, 1908. Ann. Mag. Nat. Hist., ser. 8, 2:369. TYPE LOCALITY: Caroline Isis, Palau Isis (Pac. Isis Trust Terr., USA). DISTRIBUTION: Palau Isis (Caroline Isis). STATUS: CITES - Appendix I; IUCN - Extinct; probably extinct.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on pages 149-150, DOI: 10.5281/zenodo.7353060
A Landscape of Field Theories
Creators: name: Maxfield, Travis
name: Robbins, Daniel
name: Sethi, Savdeep
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Studying a quantum field theory involves a choice of space-time manifold and a choice of background for any global symmetries of the theory. We argue that many more choices are possible when specifying the background. In the context of branes in string theory, the additional data corresponds to a choice of supergravity tensor fluxes. We propose the existence of a landscape of field theory backgrounds, characterized by the space-time metric, global symmetry background and a choice of tensor fluxes. As evidence for this landscape, we study the supersymmetric six-dimensional (2,0) theory compactified to two dimensions. Different choices of metric and flux give rise to distinct two-dimensional theories, which can preserve differing amounts of supersymmetry.
description: 33 pages, LaTeX
Quality Standard for Energy Yield Studies
Creators: name: Schumann, A.
Publisher: name: WIP
Year: 2015
Subjects: OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Operation of PV Systems and Plants

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2290-2293
description: The gratuitous but volatile availability of fuel is one of the major differences between investments in renewable energies such as photovoltaic (PV) systems and investments in conventional power plants. It is hence decisive to base PV projects on the most reliable assessment of the expectable energy production. Independent yield analyses are consequently requested in funding, tender and selling processes of PV plants. Specialized knowledge and independence are demanded from qualified yield assessor in order to allow a reliable prediction of the expected energy yield. Aspects of meteorology, geology and technology need to be considered for this interdisciplinary task. This article describes state of the art methods, data sources and tools pointing out four key factors for high quality production estimates. In this context also the importance of a clear result presentation and the transparency of critical assumptions are discussed. Overall, this paper is a technical overview as well as a quality guideline for yield studies. It can be helpful in the judgment of different yield reports or as a requirement catalogue for the identification of qualified yield experts. Furthermore interested parties are requested to contribute to a normative process.
A semi-analytic study of self-interacting dark-matter haloes with baryons
Creators: name: Jiang, Fangzhou
name: Benson, Andrew
name: Hopkins, Philip F.
name: Slone, Oren
name: Lisanti, Mariangela
name: Kaplinghat, Manoj
name: Peter, Annika H. G.
name: Zeng, Zhichao Carton
name: Du, Xiaolong
name: Yang, Shengqi
name: Shen, Xuejian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We combine the isothermal Jeans model and the model of adiabatic halo contraction into a simple semi-analytic procedure for computing the density profile of self-interacting dark-matter (SIDM) haloes with the gravitational influence from the inhabitant galaxies. We show that the model agrees well with cosmological SIDM simulations over the entire core-forming stage and up to the onset of gravothermal core-collapse. Using this model, we show that the halo response to baryons is more diverse in SIDM than in CDM and depends sensitively on galaxy size, a desirable link in the context of the structural diversity of bright dwarf galaxies. The fast speed of the method facilitates analyses that would be challenging for numerical simulations -- notably, 1) we quantify the SIDM halo response as functions of the baryonic properties, on a fine mesh grid spanned by the baryon-to-total-mass ratio, $M_{\rm b}/M_{\rm vir}$, and galaxy compactness, $r_{1/2}/R_{\rm vir}$; 2) we show with high statistical precision that for typical Milky-Way-like systems, the SIDM profiles are similar to their CDM counterparts; and 3) we delineate the regime of gravothermal core-collapse in the $M_{\rm b}/M_{\rm vir}$-$r_{1/2}/R_{\rm vir}$ space, for a given cross section and a given halo concentration. Finally, we compare the isothermal Jeans model with the more sophisticated gravothermal fluid model, and show that the former yields faster core formation and agrees better with cosmological simulations. We attribute the difference to whether the target CDM halo is used as a boundary condition or as the initial condition for the gravothermal evolution, and thus comment on possible future improvements of the fluid model. We have made our programs for the model publicly available at https://github.com/JiangFangzhou/SIDM.
description: 15 pages, 9 figures, submitted to MNRAS
Opportunities for Small-Scale Aquaculture in Malawi
Creators: name: Munthali, Maggie G.
name: Chilora, Lemekezani
name: Nyirenda, Zephania
name: Salonga, Dinah
name: Wineman, Ayala
name: Muyanga, Milu
Publisher: name: Unknown
Year: 2023
Subjects: subject: Agricultural and Food Policy
subject: Food Security and Poverty
subject: International Development
subject: Aquaculture
subject: Food security
subject: Income generation
subject: Malawi

description: Key Messages • Small-scale aquaculture has potential to improve food security in Malawi and contribute to rural livelihoods as a source of income. • Small-scale fish farmers are impeded by a lack of access to high quality feed, fingerlings, relevant aquaculture extension services, and well-structured output markets, and are also affected by climate change. • Promising areas for investment in small-scale aquaculture therefore include improving access to high quality fish feed through domestic production, training certified hatchery operators, facilitating access to formal fish markets, and developing guidelines for cage farming.
Atomic Parameters for the $2p^53p~^2[3/2]_2 - 2p^53s~^2[3/2]^o_2$ Transition of Ne I relevant in nuclear physics
Creators: name: Li, Jiguang
name: Godefroid, Michel
name: Wang, Jianguo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculated the magnetic dipole hyperfine interaction constants and the electric field gradients of $2p^53p~^2[3/2]_2$ and $2p^53s~^2[3/2]^o_2$ levels of Ne I by using the multiconfiguration Dirac-Hartree-Fock method. The electronic factors contributing to the isotope shifts were also estimated for the $λ= 614.5$ nm transition connecting these two states. Electron correlation and relativistic effects including the Breit interaction were investigated in details. Combining with recent measurements, we extracted the nuclear quadrupole moment values for $^{20}$Ne and $^{23}$Ne with a smaller uncertainty than the current available data. Isotope shifts in the $2p^53p~^2[3/2]_2 - 2p^53s~^2[3/2]^o_2$ transition based on the present calculated field- and mass-shift parameters are in good agreement with the experimental values. However, the field shifts in this transition are two or three orders of magnitude smaller than the mass shifts, making rather difficult to deduce changes in nuclear charge mean square radii. According to our theoretical predictions, we suggest to use instead transitions connecting levels arising from the $2p^53s$ configuration to the ground state, for which the normal mass shift and specific mass shift contributions counteract each other, producing relatively small mass shifts that are only one order of magnitude larger than relatively large field shifts, especially for the $2p^53s~^2[1/2]^o_1 - 2p^6~^1S_0$ transition.
Estado del arte de la comunicación de gobierno en tiempos de medios sociales
Creators: name: Ruiz Soto, Mario Alberto
Publisher: name: Universidad Externado de Colombia
Year: 2022
Subjects: subject: Medios de comunicación de masas - Aspectos sociales
subject: Redes sociales
subject: Comunicación en política
subject: Comunicación gubernamental
subject: Medios sociales
subject: Estado del arte
subject: Transformación digital

description: El presente escrito es una actualización del estado del arte sobre la comunicación de gobierno en tiempos de redes sociales a partir de una revisión de 50 artículos de revistas indexadas. Se encuentran 3 planteamientos principales. El primero analiza las nuevas contribuciones académicas de la comunicación gubernamental y sus efectos en la visibilidad y la participación ciudadana. El segundo analiza un marco teórico tendiente a la transformación de la arquitectura digital para una nueva comunicación de gobierno. El tercero se refiere a las investigaciones publicadas sobre la comunicación de crisis, en especial después de la pandemia del COVID-19. Como conclusión se puede establecer que la mayoría de los artículos se concentran en 22 países, con un énfasis en España y Estados Unidos. Se denota una tendencia hacia la transformación digital de las instituciones públicas, y queda evidenciada la necesidad de futuros estudios en materia de comunicación gubernamental.
description: This paper is an update of the state of the art on government communication in times of social networks based on a review of 50 articles from indexed journals. There are 3 main approaches. The first one analyzes the new academic contributions of government communication and its effects on visibility and citizen participation. The second analyzes a theoretical framework aimed at transforming the digital architecture for a new government communication. The third refers to published research on crisis communication, especially after the COVID-19 pandemic. In conclusion, it can be mentioned that most of the articles are concentrated in 22 countries, with emphasis on Spain and the United States. There is a trend towards digital transformation of public institutions, and the need for future studies on governmental communication is evident.
Bibliotheken als Forschungsdatenproduzenten. Fortbildung des VDB LV Bayern.
Creators: name: , Annette.Strauch@Uni-Hildesheim.De
Publisher: name: Zenodo
Year: 2023
Subjects: FDM
Forschungsdaten
forschungsdaten
Forschungsdatenmanagement
Bibliotheken
libraries
RDM
Research Data Management
research data
research data management
Open Science

description: 'Virtuelle' Fortbildung zum Thema Forschungsdaten (März 2023).

 Entwurf ...
 Die Folien werden nachoptimiert und inhaltlich angepasst ... Dies ist ein Entwurf, der auf den in der UB gemachten Erfahrung (operativ) aufbaut.

 Allgem. Einführung mit folgenden Schwerpunkten: Rechtl. Aspekte, die Bibliothek als DienstleisterIn, FDM-Kompetenzen und Anforderungen an BibliothekarInnen, Bibliotheken als ForschungsdatenproduzentInnen.