cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Convergence properties of the multipole expansion of the exchange contribution to the interaction energy
Creators: name: Gniewek, Piotr
name: Jeziorski, Bogumił
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The conventional surface integral formula $J_{\rm surf}[Φ]$ and an alternative volume integral formula $J_{\rm var}[Φ]$ are used to compute the asymptotic exchange splitting of the interaction energy of the hydrogen atom and a proton employing the primitive function $Φ$ in the form of its truncated multipole expansion. Closed-form formulas are obtained for the asymptotics of $J_{\rm surf}[Φ_N]$ and $J_{\rm var}[Φ_N]$, where $Φ_N$ is the multipole expansion of $Φ$ truncated after the $1/R^N$ term, $R$ being the internuclear separation. It is shown that the obtained sequences of approximations converge to the exact results with the rate corresponding to the convergence radius equal to 2 and 4 when the surface and the volume integral formulas are used, respectively. When the multipole expansion of a truncated, $K$th order polarization function is used to approximate the primitive function the convergence radius becomes equal to unity in the case of $J_{\textrm{var}}[Φ]$. At low order the observed convergence of $J_{\rm var}[Φ_N]$ is, however, geometric and switches to harmonic only at certain value of $N=N_c$ dependent on $K$. An equation for $N_c$ is derived which very well reproduces the observed $K$-dependent convergence pattern. The results shed new light on the convergence properties of the conventional SAPT expansion used in applications to many-electron diatomics.
description: 20 pages, 2 figures (incl. graphical abstract), submitted to Molecular Physics
Pteropus samoensis Peale 1848
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Pteropus
Pteropus samoensis

description: Pteropus samoensis Peale, 1848. Mammalia in Repts. U.S. Expl. Surv., 8:20. TYPE LOCALITY: Samoan Isis, Tutuila Isl (American Samoa). DISTRIBUTION: Fiji Isis, Samoan Isis. STATUS: CITES - Appendix I; IUCN - Endangered. SYNONYMS: nawaiensis, vitiensis, whitmeei. COMMENTS: Includes nawaiensis; see Hill and Beckon (1978:65).
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 150, DOI: 10.5281/zenodo.7353060
description: {"references": ["Hill, J. E., and W. N. Beckon. 1978. A new species of Pteralopex Thomas, 1888 (Chiroptera: Pteropodidae) from the Fiji Islands. Bulletin of the British Museum (Natural History), Zoology Series, 34: 65 - 82."]}
Las políticas de ciencia, tecnología e innovación en Colombia, 2011-2021. Un análisis del Sistema General de Regalías a partir de la noción de zonas de desarrollo próximo
Creators: name: Calderón Guzmán, Nelson Andrés
Publisher: name: Universidad Externado de Colombia
Year: 2022
Subjects: subject: Tecnología
subject: Ciencias políticas
subject: Desarrollo económico
subject: Políticas de ciencia, tecnología e innovación
subject: Conocimiento
subject: Sistemas nacionales de innovación
subject: Regalías
subject: Clúster

description: Este trabajo tiene como objetivo analizar la política del Gobierno colombiano en materia de ciencia, tecnología e innovación (CTeI) y su relación con el Sistema General de Regalías (SGR). El trabajo parte de la noción de zonas de desarrollo próximo (ZDP) presentada por el pedagogo L. Vygotsky para el desarrollo en el aprendizaje y adaptada al desarrollo económico, presenta la evolución reciente del SGR (2011-2022) del país en materia de CTeI e identifica cómo el sector enfrenta el bajo financiamiento y la dependencia a los recursos del SGR. Aplicando la noción de ZDP, usando datos asociados a la CTeI por departamentos y aplicando técnicas cuantitativas se propone una nueva regionalización entre las comunidades epistémicas y los ecosistemas en general que ayudaría a cerrar las brechas en las actividades de investigación y desarrollo, innovación y capacitación (ACTI). Se concluye que, en materia de gobernanza, los departamentos como Bolívar, Santander, Cundinamarca, Atlántico, Valle del Cauca, Bogotá D. C. y Antioquia representan los ecosistemas más fortalecidos del país y los que estarían en las ZDP y que se requiere que las comunidades epistémicas hagan un esfuerzo por ayudar a cerrar las de otros ecosistemas como los de Vichada, Guainía, Vaupés, La Guajira, Chocó, Magdalena, Guaviare, Sucre, Córdoba y Bolívar.
description: This paper aims to analyze the policy of the Colombian Government in science, technology and innovation and its relationship with the General System of Royalties. The work starts from the notion of Areas of Near Development presented by Vygotsky for development in learning and adapted to economic development; it presents the recent evolution of the SGR (2011-2022) of the country in terms of science, technology and innovation, and identifies how the sector faces the low financing and dependence on the resources of the General System of Royalties, applying Vygotsky’s theory a new regionalization was reached that would help close the gaps in the lines of research, development, innovation and training activities. Departments such as Bolívar, Santander, Cundinamarca, Atlántico, Valle del Cauca, Bogotá D.C., and Antioquia represent the most strengthened ecosystems in the country and those that would be in the Areas of Near Development, and that epistemic communities required to make an effort to help close those of other ecosystems such as those of Vichada, Guainía, Vaupés, La Guajira, Chocó, Magdalena, Guaviare, Sucre, Córdoba and Bolívar.
Development of a Web-Based Application for Increasing the Yield of Photovoltaic Systems - UCB PVAPP
Creators: name: Ehmann, F.
name: Geib, D.
name: Reichenbecher, M.
name: Zimmer, L.
name: Laub, P.
name: Rumpler, 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; 2119-2121
description: There are about 1.5 million photovoltaic systems in Germany. Private owners who cannot assign an
operation and maintenance company due to economic reasons operate most of their systems on their own.
Furthermore, monitoring systems are too complex or cannot be afforded by typical system owners. This is one reason
that about 80 percent of the photovoltaic systems in Germany do not generate the yield that is technically possible.
Therefore, we present an innovative web-application that allows system users and operators to monitor the actual
status and profitability of their photovoltaic system. Also, they can get in contact with a specialized company, which
can repair or maintenance the system in case of problems such as too small yield, damages or malfunctions. Our goal
is the development of an application that is easy to use and designed for computers as well as mobile devices.
Melting the Superconducting State in the Electron Doped Cuprate Pr$_{1.85}% $Ce$_{0.15}$CuO$_{4-δ}$ with Intense near-infrared and Terahertz Pulses
Creators: name: Beck, M.
name: Klammer, M.
name: Rousseau, I.
name: Obergfell, M.
name: Leiderer, P.
name: Helm, M.
name: Kabanov, V. V.
name: Diamant, I.
name: Rabinowicz, A.
name: Dagan, Y.
name: Demsar, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We studied the superconducting (SC) state depletion process in an electron doped cuprate Pr$_{1.85}$Ce$_{0.15}$CuO$_{4-δ}$ by pumping with near-infrared (NIR) and narrow-band THz pulses. When pumping with THz pulses tuned just above the SC gap, we find the absorbed energy density required to deplete superconductivity, $A_{dep}$, matches the thermodynamic condensation energy. Contrary, by NIR pumping $A_{dep}$ is an order of magnitude higher, despite the fact that the SC gap is much smaller than the energy of relevant bosonic excitations. The result implies that only a small subset of bosons contribute to pairing.
Soleksat, a Flexible Solar Irradiance Forecasting Tool Using Satellite Images and Geographic Web-Services
Creators: name: Cros, S.
name: Turpin, M.
name: Lallemand, C.
name: Sébastien, N.
name: Schmutz, N.
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; 2128-2131
description: Intraday photovoltaic power production forecasting benefits to various energy stakeholders (grid
operators, virtual power plant managers, electricity traders and other balance responsible parties). Solar irradiance
forecast at this scale cannot be accurately produced using current weather models. Stochastic evolution of cloud cover
is better represented by the extrapolation of cloud patterns observed by images from geostationary meteorological
satellites. Soleksat is an integrated solution to produce global horizontal irradiance (GHI) up to 6 hours in advance
using images from any geostationary satellite all over the world. Its architecture is based on geographic web servers.
It enables a convenient flexibility for end-users requiring spatially distributed data. Soleksat input data can originate
from any source respecting the standard of Open Geospatial Consortium without software modification. GHI forecast
accuracy has been assessed by comparison with ground measurements located. Soleksat is able to forecast GHI with a
relative RMSE smaller than 40% for a time horizon up to 4.5 hours.
Shearless bifurcations in particle transport for reversed shear tokamaks
Creators: name: Grime, G. C.
name: Roberto, M.
name: Viana, R. L.
name: Elskens, Y.
name: Caldas, I. L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Some internal transport barriers in tokamaks have been related to the vicinity of extrema of the plasma equilibrium profiles. This effect is numerically investigated by considering the guiding-center trajectories of plasma particles undergoing ExB drift motion, considering that the electric field has a stationary nonmonotonic radial profile and an electrostatic fluctuation. In addition, the equilibrium configuration has a nonmonotonic safety factor profile. The numerical integration of the equations of motion yields a symplectic map with shearless barriers. By changing the parameters of the safety factor profile, the appearance, and breakup of these shearless curves are observed. The successive shearless curves breakup and recovering is explained using concepts from bifurcation theory. We also present bifurcation sequences associated to the creation of multiple shearless curves. Physical consequences of scenarios with multiple shearless curves are discussed.
description: 18 pages, 9 figures. Replacement improved the text
Thin Film Photovoltaic Plants Production Estimation by Artificial Neural Networks
Creators: name: Graditi, G.
name: Ferlito, S.
name: Adinolfi, G.
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; 2132-2136
description: In recent years, the use of renewables has been increased all over the world. In Italy, about 17 GW and 526.000 photovoltaic plants have been installed. A such extended and distributed diffusion makes this technology suitable to drive further steps toward Nearly Zero Energy Buildings. Each building is going to become an energetic node of the grid, able to continuously optimize the balance between its generation and its consumption. In a similar scenario, photovoltaic systems potentialities and their possibility to be incorporated in buildings envelope make them promising solutions to these grid nods energy generation. On the other hand, a crucial aspect related to alternative sources is their unpredictability since they are deeply influenced by meteorological variables. This aspect not only affects renewables performances, but also the generation/consumption system balance gets complicated. In this scenario, methods to forecast the PV power production can provide useful information. In addition, since in any PV system sizing represents an important step of PV systems design (i.e. solar generators number, storage batteries size, etc.), authors evaluate different methods to directly estimate the photovoltaic power production from climatic variables of a specific installation site.
Charging Electric Vehicles in the Smart City: A Survey of Economy-driven Approaches
Creators: name: Shuai, Wenjing
name: Maillé, Patrick
name: Pelov, Alexander
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: Electric Vehicles (EVs), as their penetration increases, are not only challenging the sustainability of the power grid, but also stimulating and promoting its upgrading. Indeed, EVs can actively reinforce the development of the Smart Grid if their charging processes are properly coordinated through two-way communications, possibly benefiting all types of actors. Because grid systems involve a large number of actors with nonaligned objectives, we focus on the economic and incentive aspects, where each actor behaves in its own interest. We indeed believe that the market structure will directly impact the actors' behaviors, and as a result the total benefits that the presence of EVs can earn the society, hence the need for a careful design. This survey provides an overview of economic models considering unidirectional energy flows, but also bidirectional energy flows, i.e., with EVs temporarily providing energy to the grid. We describe and compare the main approaches, summarize the requirements on the supporting communication systems, and propose a classification to highlight the most important results and lacks.
Plan estratégico grupo SKY Operador Logístico
Creators: name: Fajardo Camargo, Angelica
name: Jimenez Salas, Maria Paula
Publisher: name: Universidad Externado de Colombia
Year: 2022
Subjects: subject: Administración de mercadeo
subject: Almacenamiento industrial
subject: Redes sociales
subject: Plan estratégico
subject: Mercadeo
subject: Operador logístico
subject: Posicionamiento de marca

description: Grupo Sky es una compañía logística dirigida a medianas y grandes empresas (B2B) que brinda el servicio de asesoría, almacenamiento, administración de inventarios y servicios complementarios logísticos. La empresa tiene una oportunidad de crecimiento en cuanto al desarrollo del área de mercadeo, lo cual nos permitirá implementar estrategias principalmente de marketing digital, por medio de la apertura de diferentes redes sociales, pasarelas de pago y generación de contenido de valor, entre otras acciones, con el objetivo de aumentar el posicionamiento de la marca, captar leads calificados, atraer nuevos clientes y generar un mayor volumen de ventas. Por consiguiente, se realizó un benchmarking de los principales competidores, identificando estrategias y tácticas utilizadas en el mercado, para posteriormente adaptarlas a las necesidades del Grupo Sky y proponer un plan de acción que trabaja los objetivos de: posicionamiento de marca, mercadeo, rentabilidad y crecimiento, enfocado en mejorar el ROI del área de mercadeo y su respectiva inversión propuesta.
description: Grupo Sky is a logistics company directed to medium and big companies (B2B) that provides consulting services, warehousing, inventory management and complementary logistics services. The company has an opportunity for growth in terms of the development of the marketing area, which will allow us to implement mainly digital marketing strategies, through the opening of different social networks, payment gateways and generation of valuable content, among other actions, with the aim of increasing brand position, capturing qualified leads, attracting new customers and generating a higher volume of sales. Therefore, a benchmarking of the main competitors was carried out, identifying strategies and tactics used in the market, to subsequently adapt them to the needs of Sky Group and propose an action plan that works the objectives of: brand position, marketing, profitability and growth, focused on improving the ROI of the marketing area and its respective proposed investment.
Impact of Temporal and Spatial Discretization on the Agreement between Measured and Modeled Performance of Large Photovoltaic Power Plants
Creators: name: Capdevila, H.
name: Gerstmaier, T.
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; 2150-2156
description: The choice of temporal and spatial scales has a direct
impact on the agreement between the measured and modeled
performance of photovoltaic power generation systems.
Experimental and simulation results are presented in this work
for a recently commissioned MW Concentrating Photovoltaic
(CPV) power plant equipped with module assemblies of multijunction
solar cells mounted on two-axis trackers and connected
to central inverter stations. Performance simulations have been
conducted with a proprietary software package that includes
state of the art approaches required to model the conversion
process from incoming solar irradiance into electrical energy.
Comparison of measurements and computed results show that
more accurate production predictions and lower uncertainties
are achievable when supported by adequate discretization of
time and space scales.
A revisão por pares aberta na política editorial de uma revista
Creators: name: Trzesniak, Piotr
name: Panepucci, Luciano Gabriel
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.
Evaluating the Effect of the Forecast Horizon in the Error of Regional Forecasts of Insolation in Japan: the Kanto Region Case
Creators: name: Fonseca Jr., J.G.S.
name: Oozeki, T.
name: Ohtake, H.
name: Ogimoto, K.
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; 2091-2095
description: Photovoltaic power generation can be highly variable according to weather conditions. Its forecast or
of its primary source, insolation, is indispensable information in the integration of large amounts of photovoltaic
systems on power grids. In this study we analyze the effect of the forecast horizon on the accuracy of regional
forecasts of insolation in Japan. Its objective is to support the development of better forecast methods, improving the
characterization of the forecast error and its causes. Two forecast horizons were regarded, one day ahead and one
hour ahead of time. A forecast method for each horizon was devised in previous studies, based on the application of
support vector regression and numerical weather prediction data. Using these methods, one year of hourly forecasts
were done for one of the main regions of Japan, the Kanto region. The results show that the annual root mean square
error of the insolation forecasts decreases 56.4% when changing the forecast horizon from day-ahead to hour-ahead
level. The variation was similar in terms of in the case of the mean absolute error, reaching 56.3%. The study also
shows that, due to strong variations of weather conditions, in 1.6% of the total hours forecasted, even the hour-ahead
method yielded forecasts with large errors. Moreover, from these, in 28 hours the forecasts actually yielded an
accuracy worse than the day-ahead one. These result suggests the existence of critical hours in which power grid
operators and users should have special care when insolation and PV power forecasts.
A data base of synthetic photometry in the GALEX ultraviolet bands for the stellar sources observed with the International Ultraviolet Explorer
Creators: name: Beitia-Antero, Leire
name: de Castro, Ana I. Gomez
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Galaxy Evolution Explorer (GALEX) has produced the largest photometric catalogue of ultraviolet (UV) sources. As such, it has defined the new standard bands for UV photometry: the near UV band (NUV) and the far UV band (FUV). However, due to brightness limits, the GALEX mission has avoided the Galactic plane which is crucial for astrophysical research and future space missions. The International Ultraviolet Explorer (IUE) satellite obtained 63,755 spectra in the low dispersion mode during its 18 years lifetime. We have derived the photometry in the GALEX bands for the stellar sources in the IUE Archive to extend the GALEX data base with observations including the Galactic plane.Good quality spectra have been selected for all IUE classes of stellar sources. The GALEX FUV and NUV magnitudes have been computed using the GALEX transmission curves, as well as the conversion equations between flux and magnitudes provided by the mission (galexgi.gsfc.nasa.gov). Consistency between GALEX and IUE synthetic photometries has been tested using White Dwarfs (WD) contained in both samples. The non-linear response performance of GALEX inferred from this data agrees with the results from GALEX calibration. The photometric data base is made available to the community through the services of the Centre de Données Stellaires at Strasbourg (CDS). The catalogue contains FUV magnitudes for 1,631 sources, ranging from FUV=1.81 to FUV=18.65 mag. In the NUV band, the catalogue includes observations for 1,005 stars ranging from NUV = 3.08 to NUV= 17.74 mag . UV photometry for 1,493 not included in the GALEX AIS GR5 catalogue is provided; most of them are hot (O-A spectral type) stars. The sources in the catalogue are distributed over the full sky, including the Galactic plane.
description: Submitted to Astronomy & Astrophysics
Design and Analysis Software of Ground-Mounted Photovoltaic Station
Creators: name: Wang, Y.
name: Wang, H.
name: Xu, 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; 2125-2127
description: In China, large-scale photovoltaic (PV) station takes the most share of domestic PV market. Many
stations are built on complex terrain such as highland and hilly field. Designer of a PV station should consider
much carefully on terrain, weather and other factors. In this study, a design and analysis software of
ground-mounted PV station is developed to assist engineering. Contour map, progressive layout strategy, 3D
shading analysis and dynamic simulation of PV station are proposed to conquer challenges in designing process.
From comparison result of a real PV station, the software can exactly match the measured data so that show
availability of the software.
Computational Modeling of Electro-Elasto-Capillary Phenomena in Dielectric Elastomers
Creators: name: Seifi, Saman
name: Park, Harold S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We present a new finite deformation, dynamic finite element model that incorporates surface tension to capture elastocapillary effects on the electromechanical deformation of dielectric elastomers. We demonstrate the significant effect that surface tension can have on the deformation of dielectric elastomers through three numerical examples: (1) surface tension effects on the deformation of single finite elements with homogeneous and inhomogeneous boundary conditions; (2) surface tension effects on instabilities in constrained dielectric elastomer films, and (3) surface tension effects on bursting drops in solid dielectrics. Generally, we find that surface tension creates a barrier to instability nucleation. Specifically, we find in agreement with recent experimental studies of constrained dielectric elastomer films a transition in the surface instability mechanism depending on the elastocapillary length. The present results indicate that the proposed methodology may be beneficial in studying the electromechanical deformation and instabilities for dielectric elastomers in the presence of surface tension.
Pteropus sanctacrucis Troughton 1930
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Pteropus
Pteropus sanctacrucis

description: Pteropus sanctacrucis Troughton, 1930. Rec. Aust. Mus., 18:3. TYPE LOCALITY: Solomon Isis, Santa Cruz Isis, Ndeni Isl. DISTRIBUTION: Santa Cruz Isis. 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 150, DOI: 10.5281/zenodo.7353060
Estimating Overall MPP Tracking Losses Using Weather Statistics
Creators: name: Egler, M.
name: Gordon, S.
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; 2105-2109
description: In energy yield studies for PV systems, MPP tracking losses are often neglected. EN 50530:2010
introduced a methodology for the measurement of static and dynamic MPPT efficiencies. Typically, the influence of
the MPP tracker under static environmental conditions is accounted for by using a fixed and location-independent
factor.
The performance of the inverter’s MPP tracking system decreases under dynamic conditions, and therefore depends
on the input variability, i.e. the weather conditions experienced by the PV plant. Differences in the statistics of the
irradiance slopes experienced at different locations means that MPP tracking losses can vary significantly from one
location to another.
In this paper, high-quality irradiation time series have been analysed against adapted EN 50530:2010 irradiance
slopes. The results indicate an annual fraction of static conditions ranging from approx. 40% to 90%. When
combined with typical MPP tracking performance found in the market, this leads to a variation of the overall MPP
tracking losses of 0.9% to 0.4%, indicating location-specific data should be applied to increase accuracy in PV energy
yield studies.
Influencer Impartiality Disclosure on Instagram: The effects of impartiality disclosure on brand objectives, for no and multiple product endorsements
Creators: name: Burmann, Christoph
name: Oprea, Corina
Publisher: name: Universität Bremen
Year: 2021
Subjects: subject: impartiality disclosure
subject: brand objectives
subject: product endorsements
subject: 330

description: Influencer Impartiality Disclosure on Instagram: The effects of impartiality disclosure on brand objectives, for no and multiple product endorsements
Changes in Solar PV Output due to Water Vapour Loading in a Future Climate Scenario
Creators: name: Smith, C.J.
name: Crook, R.
name: Forster, P.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; 2110-2113
description: Under a future climate, it is shown that the total atmospheric water vapour will increase over present
levels. Water vapour has several distinct absorption bands in the visible and near-infrared parts of the spectrum,
which is critical for PV conversion. The sensitivity of current world-leading c-Si, thin film and perovskite solar cells
to the solar spectrum under different water vapour loadings is investigated. Semiconductors with bandgaps above 1.4
eV are more resilient to increases in atmospheric water vapour due to the avoidance of two large absorption bands in
the near-infrared. Global changes in atmospheric water vapour are then taken from the HadGEM2-ES climate model
under the RCP8.5 scenario, and used to determine the changes in PV output for clear-sky conditions for crystalline
silicon (c-Si) and amorphous silicon (a-Si) solar cells. For some regions of the world, a decrease in power output of
up to 3% for clear-sky conditions is seen for the spectral response of the current world-leading c-Si cell due to
increasing water vapour, whereas a-Si performs better with a global power output decline of less than 1%.
Diamond formation from hydrocarbon mixtures in planets
Creators: name: Cheng, Bingqing
name: Hamel, Sebastien
name: Bethkenhagen, Mandy
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Hydrocarbon mixtures are extremely abundant in the Universe, and diamond formation from them can play a crucial role in shaping the interior structure and evolution of planets. With first-principles accuracy, we first estimate the diamond nucleation rate in pure liquid carbon, and then reveal the nature of chemical bonding in hydrocarbons at extreme conditions. We finally establish the pressure-temperature phase boundary where diamond can form from hydrocarbon mixtures with different atomic fractions of carbon. Notably, we find a depletion zone at pressures above 200~GPa and temperatures below 3000~K-3500~K where diamond formation is thermodynamically favorable regardless of the carbon atomic fraction, due to a phase separation mechanism. The cooler condition of the interior of Neptune compared to Uranus means that the former is much more likely to contain the depletion zone. Our findings can help explain the dichotomy of the two ice giants manifested by the low luminosity of Uranus, and lead to a better understanding of (exo-)planetary formation and evolution.
Wie kaufrelevant sind CSR Aktivitäten wirklich? State-of-the Art und weiterer Forschungsbedarf
Creators: name: Burmann, Christoph
name: Meyer, Nico
Publisher: name: Universität Bremen
Year: 2021
Subjects: subject: CSR
subject: State-of-the Art
subject: 330

description: Wie kaufrelevant sind CSR Aktivitäten wirklich? State-of-the Art und weiterer Forschungsbedarf
Landau-Zener-Stuckelberg-Majorana interference in a 3D transmon driven by a chirped microwave
Creators: name: Gong, Ming
name: Zhou, Yu
name: Lan, Dong
name: Fan, Yunyi
name: Pan, Jiazheng
name: Yu, Haifeng
name: Chen, Jian
name: Sun, Guozhu
name: Yu, Yang
name: Han, Siyuan
name: Wu, Peiheng
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: By driving a 3D transmon with microwave fields, we generate an effective avoided energy-level crossing. Then we chirp microwave frequency, which is equivalent to driving the system through the avoided energy-level crossing by sweeping the avoided crossing. A double-passage chirp produces Landau-Zener-Stückelberg-Majorana interference that agree well with the numerical results. Our method is fully applicable to other quantum systems that contain no intrinsic avoided level crossing, providing an alternative approach for quantum control and quantum simulation.
Spatio-Temporal Variability of PV Production
Creators: name: Remund, J.
name: Calhau, C.
name: Marcel, D.
name: Perret, L.
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; 2096-2100
description: The increasing penetration of PV systems in the distribution network creates new opportunities but also
raises several issues for the grid operation. New challenges, arising from the variable nature of solar energy
generation, must be tackled in order to keep a stable and balanced power grid.
In this study, short term variability in power output due to changing intensity of the cloud cover is assessed for its
impact on energy delivery. Studies on this subject conclude that while there may be local variability, there is a strong
reduction in that variability when the aggregate of several PV systems is taken into account, rather than just one PV
system. The analysis shows that the aggregated effect of many geographically dispersed systems PV systems yields a
smoothing effect that reduces the impact of local variability.
We shortly present the theoretical background of the smoothing effect and the variability model of Hoff and Perez. In
the following chapters, the model is demonstrated in three case studies for different regions and with different time
and space resolution and one of a distributed generation system in Hawaii, USA.
The current report shows the general validity of the model and suggests a simple global model for modelling
variability of PV fleets. Both need further validations at more sites and in more regions to detect the strengths and
limitations of the models and the worldwide usability.
Placing Dynamic Content in Caches with Small Population
Creators: name: Leconte, Mathieu
name: Paschos, Georgios
name: Gkatzikis, Lazaros
name: Draief, Moez
name: Vassilaras, Spyridon
name: Chouvardas, Symeon
Publisher: name: arXiv
Year: 2016
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: This paper addresses a fundamental limitation for the adoption of caching for wireless access networks due to small population sizes. This shortcoming is due to two main challenges: (i) making timely estimates of varying content popularity and (ii) inferring popular content from small samples. We propose a framework which alleviates such limitations. To timely estimate varying popularity in a context of a single cache we propose an Age-Based Threshold (ABT) policy which caches all contents requested more times than a threshold $\widetilde N(τ)$, where $τ$ is the content age. We show that ABT is asymptotically hit rate optimal in the many contents regime, which allows us to obtain the first characterization of the optimal performance of a caching system in a dynamic context. We then address small sample sizes focusing on $L$ local caches and one global cache. On the one hand we show that the global cache learns L times faster by aggregating all requests from local caches, which improves hit rates. On the other hand, aggregation washes out local characteristics of correlated traffic which penalizes hit rate. This motivates coordination mechanisms which combine global learning of popularity scores in clusters and LRU with prefetching.
description: 11 pages, 7 figures, accepted in IEEE INFOCOM 2016
Brand Personality Measurement with the Neo-Jungian Archetypes framework
Creators: name: Burmann, Christoph
name: Varvier, Jean-Louis
Publisher: name: Universität Bremen
Year: 2022
Subjects: subject: Brand Personality
subject: Neo-Jungian Archetypes framework
subject: 330

description: Brand Personality Measurement with the Neo-Jungian Archetypes framework
CTTK: A new method to solve the initial data constraints in numerical relativity
Creators: name: Aurrekoetxea, Josu C.
name: Clough, Katy
name: Lim, Eugene A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In numerical relativity simulations with non-trivial matter configurations, one must solve the Hamiltonian and momentum constraints of the ADM formulation for the metric variables in the initial data. We introduce a new scheme based on the standard Conformal Transverse-Traceless (CTT) decomposition, in which instead of solving the Hamiltonian constraint as a 2nd order elliptic equation for a choice of mean curvature $K$, we solve an algebraic equation for $K$ for a choice of conformal factor. By doing so, we evade the existence and uniqueness problem of solutions of the Hamiltonian constraint without using the usual conformal rescaling of the source terms. This is particularly important when the sources are fundamental fields, as reconstructing the fields' configurations from the rescaled quantities is potentially problematic. Using an iterative multigrid solver, we show that this method provides rapid convergent solutions for several initial conditions that have not yet been studied in numerical relativity; namely (i) periodic inhomogeneous spacetimes with large random Gaussian scalar field perturbations and (ii) asymptotically flat black hole spacetimes with rotating scalar clouds.
description: 14 pages, 4 figures, 1 appendix. Matches version published in CQG
Support Tool to Evaluate Year to Year Plant Performance where Irradiance Data is not Available
Creators: name: Ingenhoven, P.
name: Belluardo, G.
name: Bresciani, W.
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; 2101-2104
description: In this paper we compare the calculated and measured yearly irradiance and power output for a PV
plant with the aim of estimating the power production for various azimuth and tilt angles in
Bolzano. This will serve as a reference data base for local plant owners to evaluate the state of their
PV plant where irradiance sensors are not available. PV plant losses and failure are not always easy
to detect as the power output depends on the amount of irradiance. The final output is a table of
expected year to year losses due to environmental influence. With this tool the plant owners can
check if the production of their plant is in line with the expected energy output, which without a
monitoring system in place is only accessible in aggregated values. Thus we provide a local tool to
monitor performance of a plant without a radiation measurement system in place. This will be
accurate only for the exact position, the data was compared to 7 plants in South Tyrol to verify the
accuracy of the data. To develop this system, we are using data from the PV-test site at the airport
Bolzano Dolomiti (ABD). In a second step simulated yearly radiation data will be used to provide
a data base for more than one position, and hence be useful for more plant owners in the region.
Psychological responses to jihadist terrorism: Exploring a small but significant opinion shift towards minority inclusion among French citizens in response to the Charlie Hebdo terrorist attacks
Creators: name: Lueders, Adrian
name: Wollast, Robin
name: Nugier, Armelle
name: Guimond, Serge
Publisher: name: University of Limerick
Year: 2023
Subjects: classificationCode: 52
subject: Psychology
subject: FOS: Psychology

description: Experiences with jihadist terrorism sparked debates about the boundaries of religious expression within secular societies. Standpoints majority members hold in such discussions may be inclusive or exclusive towards religious minorities and inform wider intergroup perceptions. The present research explores these relationships in the context of the 2015 Charlie Hebdo terrorist attacks in Paris, France. Using longitudinal data from a diverse French sample (N=558) collected before and after the attacks, we test whether within-person changes in exclusionary and inclusionary interpretations of the French Laïcité principle can account for changes in public perceptions of context-relevant minorities. Meta-analytical findings suggest a small significant conservative shift after experiences with terrorism. Previous research conducted in the context of the Charlie Hebdo terrorist attacks departed from this pattern, however, without identifying underlying psychological mechanisms. Accordingly, the present data suggests a small but significant opinion shift in favor of context-relevant minorities. This shifting was partially explained through an increased endorsement of an inclusionary interpretation of the Laïcité principle that stresses the freedom of religious expression. We offer a contextualized interpretation of our data, suggesting that the collective coping dynamics that followed the events (i.e., republican marches, #JeSuisCharlie) have been critical for the observed effects.
Authentische Markenkommunikation von umweltschutzbezogenen CSR-Aktivitäten durch Transparenz
Creators: name: Burmann, Christoph
name: Müller, Jonas
Publisher: name: Universität Bremen
Year: 2022
Subjects: subject: CSR
subject: Markenkommunikation
subject: 330

description: Authentische Markenkommunikation von umweltschutzbezogenen CSR-Aktivitäten durch Transparenz
Pteropus scapulatus Peters 1862
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Pteropus
Pteropus scapulatus

description: Pteropus scapulatus Peters, 1862. Monatsb. K. Preuss. Akad. Wiss. Berlin, 1862:574. TYPE LOCALITY: Australia, Queensland, Cape York. DISTRIBUTION: Australia, S New Guinea, accidental on New Zealand. STATUS: CITES - Appendix II. SYNONYMS: elseyi.
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 150-151, DOI: 10.5281/zenodo.7353060
Ab-initio electron scattering cross-sections and transport in liquid xenon
Creators: name: Boyle, Greg
name: McEachran, Robert
name: Cocks, Daniel
name: Brunger, Michael
name: Buckman, Steve
name: Dujko, Sasa
name: White, Ron
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Ab-initio electron - liquid phase xenon fully differential cross-sections for electrons scattering in liquid xenon are developed from a solution of the Dirac-Fock scattering equations, using a recently developed framework [1] which considers multipole polarizabilities, a non-local treatment of exchange, and screening and coherent scattering effects. A multi-term solution of Boltzmann's equation accounting for the full anisotropic nature of the differential cross-section is used to calculate transport properties of excess electrons in liquid xenon. The results were found to agree to within 25% of the measured mobilities and characteristic energies over the reduced field range of 10^{-4} to 1 Td. The accuracies are comparable to those achieved in the gas phase. A simple model, informed by highly accurate gas-phase cross-sections, is presented to transform highly accurate gas-phase cross-sections to improve the liquid cross-sections, which was found to enhance the accuracy of the transport coefficient calculations.
description: 26 pages, 9 figures. arXiv admin note: text overlap with arXiv:1503.00377
Wirkung von virtuellen Verkaufstools (Hauls) im Influencer Branding auf die wahrgenommene Authentizität von Social Media Influencern sowie das Brand Attachment von Konsumenten
Creators: name: Burmann, Christoph
name: Mahn, Luisa
Publisher: name: Universität Bremen
Year: 2021
Subjects: subject: virtuelle Verkaufstools
subject: Hauls
subject: Influencer Branding
subject: wahrgenommene Authentizität
subject: Brand Attachment
subject: 330

description: Wirkung von virtuellen Verkaufstools (Hauls) im Influencer Branding auf die wahrgenommene Authentizität von Social Media Influencern sowie das Brand Attachment von Konsumenten
Hourly Models to Estimate the Energy Produced by Photovoltaic Modules of Different Technologies
Creators: name: Sidrach-De-Cardona, M.
name: Carretero, J.
name: Mora Segado, P.
name: Cañete Torralvo, C.
name: Piliougine Rocha, M.
name: Mora-López, L.
Publisher: name: WIP
Year: 2015
Subjects: OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
PV Modules

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 2057-2060
description: Two models to estimate the hourly energy produced by photovoltaic modules of different technologies
under real operating conditions are presented. Traditional energy prediction models have shown limits for modules of
amorphous technologies when the global radiation is mainly diffuse, because this type of modules is more sensitive to
diffuse radiation. Additionally, traditional models do not take into account the spectral distribution of the incident
radiation. That fact is a source of inaccuracy especially in photovoltaic technologies with a narrow spectral response
such as amorphous silicon. Two models are proposed in this paper. One of them assumes that the energy produced by
a module only depends on the incident irradiation and its working temperature. The other one is based on adding a
variable that takes into account the spectral composition of solar radiation in the calculation of the energy produced.
These models were estimated using hourly values. The hourly temperature of a module is obtained from the ambient
temperature, solar irradiation and wind speed. The results obtained for modules of four different technologies,
including thin film technologies, show the validity of proposed models.
In situ Observation of Dark Current Emission in a High Gradient RF Photocathode Gun
Creators: name: Shao, Jiahang
name: Antipov, Sergey P.
name: Baryshev, Sergey V.
name: Chen, Huaibi
name: Conde, Manoel
name: Gai, Wei
name: Ha, Gwanghui
name: Jing, Chunguang
name: Shi, Jiaru
name: Wang, Faya
name: Wisniewski, Eric
Publisher: name: arXiv
Year: 2016
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Undesirable electron field emission (a.k.a. dark current) in high gradient RF photocathode guns deteriorates the quality of photoemission current and limits the operational gradient. To improve the understanding of dark current emission, a high-resolution (~100 um) dark current imaging experiment has been performed in an L-band photocathode gun operating at ~100 MV/m of surface gradient. Dark current from the cathode has been observed to be dominated by several separated strong emitters. The field enhancement factor, beta, of selected regions on the cathode has been measured. The post scanning electron microscopy (SEM) and white light interferometer (WLI) surface examinations reveal the origins of ~75% strong emitters overlap with the spots where rf breakdown have occurred.
description: 5 pages, 4 figures
Exact Parallel Waves in General Relativity
Creators: name: Roche, Cian
name: Aazami, Amir Babak
name: Cederbaum, Carla
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We conduct a review of the basic definitions and the principal results in the study of wavelike spacetimes, that is spacetimes whose metric models massless radiation moving at the speed of light, focusing in particular on those geometries with parallel rays. In particular, we motivate and connect their various definitions, outline their coordinate descriptions and present some classical results in their study in a language more accessible to modern readers, including the existence of "null coordinates" and the construction of Penrose limits. We also present a thorough summary of recent work on causality in pp-waves, and describe progress in addressing an open question in the field - the Ehlers-Kundt conjecture.
description: 66 pages; review; updated version with explicit nomenclature summary and additional references