cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Biodiversity in German development cooperation after the Kunming-Montreal Global Biodiversity Framework
title: greater attention to the rights and contributions of Indigenous Peoples and local communities?
titleType: Subtitle
Creators: name: Sperl, Micha
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Biodiversität
subject: Naturschutz
subject: Indigene Völker
subject: lokale Gemeinschaften
subject: Entwicklungszusammenarbeit
subject: Green Grabbing
subject: Indigene Rechte
subject: politische Ökologie
subject: ökologische Modernisierung
subject: Vivir Bien
subject: biodiversity
subject: conservation
subject: Indigenous Peoples
subject: local communities
subject: development co-operation
subject: green grabbing
subject: Indigenous rights
subject: political ecology
subject: ecological modernisation
subject: 300 Sozialwissenschaften::320 Politikwissenschaft::320 Politikwissenschaft

description: The biodiversity crisis of rapid species extinction is met with conservation measures on a global scale. The current thesis examines the case of German development cooperation as the biggest financier of biodiversity conservation in the Global South, focusing on the in-volvement of Indigenous Peoples and local communities (IP&LC) in the planning and imple-mentation of biodiversity projects in Bolivia, Colombia, Ecuador, and Peru. Based on inter-views with practitioners in German development cooperation and the protocol of a Bundes-tag hearing it is worked out how German conservation approaches often (still) follow a logic of ecological modernisation. On the other hand, the involvement of IP&LC is gaining sali-ence. By applying a post-colonial political ecology perspective, it is shown that on the imple-mentation level German development actors are aware of the importance of integrating the rights, worldviews and contributions of IP&LC into conservation. However, when it comes to policymaking, IP&LC are often still excluded due to structural obstacles. This bears the risk that IP&LC are merely included for the implementation of Western-designed conservation projects. Conversely, there is a chance that the growing awareness for IP&LC will translate into more participatory conservation that places human well-being at the centre.
Enhancing PV-Inverters for the New Medium Voltage Grid Codes – Lessons Learned from Testing Central PV-Inverters >100kW
Creators: name: Rogalla, S.
name: Burger, B.
name: Reichert, S.
name: Schönberger, S.
Publisher: name: WIP-Munich
Year: 2010
Subjects: PV Systems
Large PV Power Plants and High Penetration of Distributed PV: System Aspects and Grid Integration

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4820-4822
description: With the fast increasing amount of photovoltaic power generation, the impact of PV power plants on
the power quality and the stability of the electricity networks increases. In order to ensure stable and reliable grid
operation, network operators release new grid codes. In Germany the new BDEW medium-voltage grid codes were
released in 2008. PV power plants that feed into the medium-voltage grid are now faced with the requirement to
behave similarly to classical power plants. They have to provide active and reactive power supply and must prove
low-voltage-ride-through capability. At Fraunhofer Institute for Solar Energy Systems (Fraunhofer ISE) we have
brought a new Megawatt Laboratory into operation in order to test PV inverters, of powers over 100 kW, according
to the new grid codes. This paper presents the lessons learned form our testing activities.
POCl3 Diffusion with In-Situ SiO2 Barrier for Selective Emitter Multicrystalline Solar Grade Silicon Solar Cells
Creators: name: Urrejola, E.
name: Peter, K.
name: Soiland, A.
name: Enebakk, E.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1835-1837
description: We present an innovative process for the formation of a selective emitter by using an advanced
phosphorous glass as a barrier layer against subsequent diffusion. The advanced barrier glass was achieved by the
formation of a standard phosphorous glass treated with additional thermal oxidation immediately after deposition in
the same process tube. The resistant layer is used as a barrier for the second diffusion after selective opening of the
finger contact areas by screen printing of a SiO2 etching paste. The process was applied for multicrystalline Elkem
Solar SoG-Si wafers as well as for references from standard EG-Si. The achieved cell parameters were compared with
cell results from a homogenous emitter process. While the efficiency was not enhanced so far due to the relatively
high shadow loss of the selective emitter solar cells, the open collector voltage could be increased by up to 9 mV and
the short wavelength spectral response increased slightly with this selective emitter. The aim of this work was to
combine the SiO2 barrier with the shallow POCl3 diffusion in one process step and the optimization of the screen
printing process for selective emitter solar cells.
Amplification and generation of ultra-intense twisted laser pulses via stimulated Raman scattering
Creators: name: Vieira, J.
name: Trines, R. M. G. M.
name: Alves, E. P.
name: Fonseca, R. A.
name: Mendonça, J. T.
name: Bingham, R.
name: Norreys, P.
name: Silva, L. O.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Twisted Laguerre-Gaussian lasers, with orbital angular momentum and characterised by doughnut shaped intensity profiles, provide a transformative set of tools and research directions in a growing range of fields and applications, from super-resolution microcopy and ultra-fast optical communications to quantum computing and astrophysics. The impact of twisted light is widening as recent numerical calculations provided solutions to long-standing challenges in plasma-based acceleration by allowing for high gradient positron acceleration. The production of ultrahigh intensity twisted laser pulses could then also have a broad influence on relativistic laser-matter interactions. Here we show theoretically and with ab-initio three-dimensional particle-in-cell simulations, that stimulated Raman backscattering can generate and amplify twisted lasers to Petawatt intensities in plasmas. This work may open new research directions in non-linear optics and high energy density science, compact plasma based accelerators and light sources.
description: 18 pages, 4 figures, 1 table
Examining the role of personality functioning in a hierarchical taxonomy of psychopathology using two years of ambulatory assessed data
Creators: name: Kerber, André
name: Ehrenthal, Johannes C.
name: Zimmermann, Johannes
name: Remmers, Carina
name: Nolte, Tobias
name: Wendt, Leon P.
name: Heim, Phileas
name: Müller, Sascha
name: Beintner, Ina
name: Knaevelsrud, Christine
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Pathogenesis
subject: Psychiatric disorders
subject: psychopathology
subject: 100 Philosophie und Psychologie::150 Psychologie::150 Psychologie

description: The Hierarchical Taxonomy of Psychopathology (HiTOP) arranges phenotypes of mental disorders based on empirical covariation, ranging from narrowly defined symptoms to higher-order spectra of psychopathology. Since the introduction of personality functioning (PF) in DSM-5 and ICD-11, several studies have identified PF as a predictor of transdiagnostic aspects of psychopathology. However, the role of PF in the HiTOP classification system has not been systematically examined. This study investigates how PF can be integrated into HiTOP, whether PF accounts for transdiagnostic variance captured in higher-order spectra, and how its predictive value for future affective well-being (AWB) and psychosocial impairment (PSI) compares to the predictive value of specific psychopathology beyond PF. To this end, we examined two years of ambulatory assessed data on psychopathology, PF, PSI, and AWB of N = 27,173 users of a mental health app. Results of bass-ackwards analyses largely aligned with the current HiTOP working model. Using bifactor modeling, aspects of PF were identified to capture most of the internalizing, thought disorder, and externalizing higher-order factor variance. In longitudinal prediction analyses employing bifactor-(S-1) modeling, PF explained 58.6% and 30.6% of variance in PSI and AWB when assessed across one year, respectively, and 33.1% and 23.2% of variance when assessed across two years. Results indicate that personality functioning may largely account for transdiagnostic variance captured in the higher-order components in HiTOP as well as longitudinal outcomes of PSI and AWB. Clinicians and their patients may benefit from assessing PF aspects such as identity problems or internal relationship models in a broad range of mental disorders. Further, incorporating measures of PF may advance research in biological psychiatry by providing empirically sound phenotypes.
Probing coherent quantum thermodynamics using a trapped ion
Creators: name: Onishchenko, O.
name: Guarnieri, Giacomo
name: Rosillo-Rodes, P.
name: Pijn, D.
name: Hilder, J.
name: Poschinger, U. G.
name: Perarnau-Llobet, M.
name: Eisert, Jens
name: Schmidt-Kaler, F.
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Nanoscale devices
subject: Quantum physics
subject: Thermodynamics
subject: 500 Naturwissenschaften und Mathematik::530 Physik::530 Physik

description: Quantum thermodynamics is aimed at grasping thermodynamic laws as they apply to thermal machines operating in the deep quantum regime, where coherence and entanglement are expected to matter. Despite substantial progress, however, it has remained difficult to develop thermal machines in which such quantum effects are observed to be of pivotal importance. In this work, we demonstrate the possibility to experimentally measure and benchmark a genuine quantum correction, induced by quantum friction, to the classical work fluctuation-dissipation relation. This is achieved by combining laser-induced coherent Hamiltonian rotations and energy measurements on a trapped ion. Our results demonstrate that recent developments in stochastic quantum thermodynamics can be used to benchmark and unambiguously distinguish genuine quantum coherent signatures generated along driving protocols, even in presence of experimental SPAM errors and, most importantly, beyond the regimes for which theoretical predictions are available (e.g., in slow driving).
Winning Arguments: Interaction Dynamics and Persuasion Strategies in Good-faith Online Discussions
Creators: name: Tan, Chenhao
name: Niculae, Vlad
name: Danescu-Niculescu-Mizil, Cristian
name: Lee, Lillian
Publisher: name: arXiv
Year: 2016
Subjects: subject: Social and Information Networks (cs.SI)
subject: Computation and Language (cs.CL)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Changing someone's opinion is arguably one of the most important challenges of social interaction. The underlying process proves difficult to study: it is hard to know how someone's opinions are formed and whether and how someone's views shift. Fortunately, ChangeMyView, an active community on Reddit, provides a platform where users present their own opinions and reasoning, invite others to contest them, and acknowledge when the ensuing discussions change their original views. In this work, we study these interactions to understand the mechanisms behind persuasion. We find that persuasive arguments are characterized by interesting patterns of interaction dynamics, such as participant entry-order and degree of back-and-forth exchange. Furthermore, by comparing similar counterarguments to the same opinion, we show that language factors play an essential role. In particular, the interplay between the language of the opinion holder and that of the counterargument provides highly predictive cues of persuasiveness. Finally, since even in this favorable setting people may not be persuaded, we investigate the problem of determining whether someone's opinion is susceptible to being changed at all. For this more difficult task, we show that stylistic choices in how the opinion is expressed carry predictive power.
description: 12 pages, 10 figures, to appear in Proceedings of WWW 2016, data and more at https://chenhaot.com/pages/changemyview.html (v2 made a minor correction on submission rules in ChangeMyView.)
Structure prediction of alternative protein conformations
Creators: name: Bryant, Patrick
name: Noé, Frank
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Biochemistry
subject: Biophysics
subject: Computational models
subject: Machine learning
subject: Protein structure predictions
subject: 500 Naturwissenschaften und Mathematik::510 Mathematik::510 Mathematik

description: Proteins are dynamic molecules whose movements result in different conformations with different functions. Neural networks such as AlphaFold2 can predict the structure of single-chain proteins with conformations most likely to exist in the PDB. However, almost all protein structures with multiple conformations represented in the PDB have been used while training these models. Therefore, it is unclear whether alternative protein conformations can be genuinely predicted using these networks, or if they are simply reproduced from memory. Here, we train a structure prediction network, Cfold, on a conformational split of the PDB to generate alternative conformations. Cfold enables efficient exploration of the conformational landscape of monomeric protein structures. Over 50% of experimentally known nonredundant alternative protein conformations evaluated here are predicted with high accuracy (TM-score > 0.8).
Digital Materials Environment – An Architecture and Tools based on FAIR Digital Objects for the NFDI-MatWerk
Creators: name: Politze, Marius
Publisher: name: Zenodo
Year: 2023

description: The NFDI-MatWerk consortium, a part of the German National Research Data Infrastructure, focuses on serving the Material Science community. Within the consortium the Task Area Materials Data Infrastructure develops the Digital Materials Environment (DME) to offer access to data storage, sharing, searching, and analysis capabilities based on "off-the-shelf" and "enterprise ready" hardware and software building blocks. This presentation showcases the implementation of the DME through integrated platforms (Coscine and MatWerk Data Repository), tools for creating FAIR Digital Objects (FDO Maker), and exploration tools (FAIR-DOscope). These implementations align with the recommended FAIR Digital Objects concept by the RDA and the European Commission. By combining service offerings and installable applications, the FAIR principles can be effectively incorporated into existing research data infrastructures based on enterprise solutions. The results presented adhere to W3C standards and are currently undergoing evaluation within the participant projects of the NFDI-MatWerk consortium.
description: NFDI-MatWerk is funded as part of the National Research Data Infrastructure (NFDI) following a recommendation of the German Joint Science Conference (GWK). The funding is provided by the Federal Government and the Heads of Government of the Länder and managed by the German Research Foundation (DFG) - project number 460247524.
Simultaneous top–down and bottom–up control of cereal aphids by predation, companion planting and host-plant diversity
Creators: name: Zeller, Julian W.
name: Shadi Khudr, Mouhammad
name: Fylypchuk, Tetiana V.
name: Bahlei, Oksana V.
name: Buzhdygan, Oksana Y.
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: aphid
subject: biocontrol
subject: biological control
subject: insect–plant interactions
subject: integrated pest management
subject: predators
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Aphids are among the most economically significant pests in cereal crops worldwide. Despite high interest in the natural control of aphids by applying natural enemies, intercropping and companion planting, the concurrent effects of the combinations of these methods due to their synergistic or antagonistic interactions remain largely unknown for both aphids and their host crops. Here we identify the relative effectiveness of simultaneous bottom–up and top–down factors in controlling one of the most economically important species of cereal aphids, the bird cherry-oat aphid Rhopalosiphum padi L. For this, we conducted microcosm experiments using a full-factorial design of three aphid-control treatments including predator presence (i.e., lacewing larvae of Chrysoperla carnea), host-plant intercropping (i.e., barley alone vs barley in combination with wheat and rye) and companion planting with an aphid-repellent plant (garlic), and estimated their direct, indirect and interactive effects on aphid density. Our results show strong simultaneous top–down control of the aphid population by predation and bottom–up control by both host-plant biomass and companion planting with garlic. The use of garlic as a companion plant for cereal crops in our study neither altered crop biomass nor suppressed the efficiency of aphid predator. Our findings suggest that the simultaneous application of aphid predator and companion planting with garlic holds promise as a potential strategy for the natural control of cereal aphid populations on grain crops, without generating related agroecosystem disservices, such as loss in crop production and deterioration of the natural enemies of pests. However, given the controlled lab conditions and limited timeframe of our study, further research is needed to confirm its effectiveness in field conditions to ensure its broader applicability in sustainable agricultural practices.
Simulation and scaling analysis of periodic surfaces with small-scale roughness in turbulent Ekman flow
Creators: name: Kostelecky, Jonathan
name: Ansorge, Cedrick
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Geophysical and Geological Flows: Topographic effects
subject: Turbulent Flows: Turbulent boundary layers
subject: Geophysical and Geological Flows: Meteorology
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::550 Geowissenschaften

description: Roughness of the surface underlying the atmospheric boundary layer causes departures of the near-surface scalar and momentum transport in comparison with aerodynamically smooth surfaces. Here, we investigate the effect of 56×56 homogeneously distributed roughness elements on bulk properties of a turbulent Ekman flow. Direct numerical simulation in combination with an immersed boundary method is performed for fully resolved, three-dimensional roughness elements. The packing density is approximately 10% and the roughness elements have a mean height in wall units of 10≲H+≲40. According to their roughness Reynolds numbers, the cases are transitionally rough, although the roughest case is on the verge of being fully rough. We derive the friction of velocity and of the passive scalar through vertical integration of the respective balances. Thereby, we quantify the enhancement of turbulent activity with increasing roughness height and find a scaling for the friction Reynolds number that is verified up to Reτ≈2700. The higher level of turbulent activity results in a deeper logarithmic layer for the rough cases and an increase of the near-surface wind veer in spite of higher Reτ. We estimate the von Kármán constant for the horizontal velocity κm=0.42 (offset A=5.44) and for the passive scalar κh=0.35 (offset A=4.2). We find an accurate collapse of the data under the rough-wall scaling in the logarithmic layer, which also yields a scaling for the roughness parameters z-nought for momentum (z0m) and the passive scalar (z0h).
Telomeric repeats in the commercial SB-1 vaccine facilitate viral integration and contribute to vaccine efficacy
Creators: name: You, Yu
name: Kheimar, Ahmed M.
name: Vychodil, Tereza
name: Kossak, Lisa
name: Sabsabi, Mohammad A.
name: Conradie, Andelé M.
name: Reddy, Sanjay M.
name: Bertzbach, Luca D.
name: Kaufer, Benedikt B.
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Herpes virus
subject: Tumour virus infections
subject: Marek’s disease virus
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Marek’s disease virus (MDV) integrates its genome into the telomeres of host chromosomes and causes fatal lymphomas in chickens. This integration is facilitated by telomeric repeat sequences (TMRs) at the ends of the viral genome, and is crucial for MDV-induced lymphomagenesis. The SB-1 vaccine virus is commonly used in commercial bivalent vaccines against MDV and also contains TMRs at its ends. Here, we demonstrate that SB-1 efficiently integrates its genome into the chromosomes of latently infected T cells. Deletion of the TMRs from the SB-1 genome did not affect virus replication, but severely impaired virus integration and genome maintenance in latently infected T cells and in chickens. Strikingly, the reduced integration and maintenance of latent SB-1 significantly impaired vaccine protection. Taken together, our data revealed that the TMRs facilitate SB-1 integration and that integration and/or maintenance of the latent viral genome is critical for vaccine protection.
Performance Studies of Bulk Micromegas of Different Design Parameters
Creators: name: Bhattacharya, Purba
name: Bhattacharya, Sudeb
name: Majumdar, Nayana
name: Mukhopadhyay, Supratik
name: Sarkar, Sandip
name: Colas, Paul
name: Attie, David
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The present work involves the comparison of various bulk Micromegas detectors having different design parameters. Six detectors with amplification gaps of $64,~128,~192,~220 ~μ\mathrm{m}$ and mesh hole pitch of $63,~78 ~μ\mathrm{m}$ were tested at room temperature and normal gas pressure. Two setups were built to evaluate the effect of the variation of the amplification gap and mesh hole pitch on different detector characteristics. The gain, energy resolution and electron transmission of these Micromegas detectors were measured in Argon-Isobutane (90:10) gas mixture while the measurements of the ion backflow were carried out in P10 gas. These measured characteristics have been compared in detail to the numerical simulations using the Garfield framework that combines packages such as neBEM, Magboltz and Heed.
description: arXiv admin note: text overlap with arXiv:1605.02896
Improving PV-Integration into the Distribution Grid Contribution of Multifunctional PV-Battery Systems to Stabilised System Operation
Creators: name: Büdenbender, K.
name: Braun, M.
name: Schmiegel, A.U.
name: Magnor, D.
name: Marcel, J.-C.
Publisher: name: WIP-Munich
Year: 2010
Subjects: PV Systems
Smart Grids, Intelligent Metering, and Related Issues

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4839-4845
description: The ongoing penetration of distribution grids with decentralized generators based on renewable energies
leads the way to a new era of electrical energy supply. In more and more grid sections, increasing numbers of installed
photovoltaic systems cause voltages rises and thereby increase the expansion costs. To overcome these obstacles for the
further expansion of photovoltaic systems, a more decentralized operation control driven by economical incentives is a
promising attempt. In order to achieve the maximum benefit from the incentives, PV systems with increased flexibility
are required. Sol-ion systems use lithium-ion batteries to decouple the provision of PV energy from its generation and are
thus designed to meet the needs of future smart system operation.
In this conference contribution three different incentive structures are looked at. They are designed for improving the
integration of PV energy into the energy supply system. Local effects of the incentive structures and effects on the
generation load balance in Germany are analyzed by simulating load flows and voltages in two low voltage grid sections
and by calculating the influence of PV energy on the total German load demand. The simulations show that Sol-ion
systems offer their operators adequate flexibility to adapt the injection of PV energy to the incentive in order to increase
the economical benefit.
Ensemble Analyses by Minkowski-Operations for Spatially Resolved Structural and Optoelectronic Features of Cu(In,Ga)(Se2,S2) Absorbers
Creators: name: Heidemann, F.
name: Gütay, L.
name: Meeder, A.
name: Bauer, G.H.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
CIS, CdTe and Other (II-VI) Ternary Thin Film Cells

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2603-2606
description: Polycrystalline chalcopyrite semiconductors like Cu(In,Ga)(Se2,S2) as physically and technologically
promising thin film solar cell absorbers show a considerable degree of spatial inhomogeneity of structural, optical
and optoelectronic properties above and below the length scale of grain sizes. The dilution of magnitudes such as
splitting of quasi-Fermi levels with a certain distribution of lower energies, introduced e.g. by local fluctuations,
introduce an additional reduction of the free energy of the photon field and drop thus the solar light conversion yield.
For a comprehensive interpretation of the influence of such inhomogeneity effects on the solar cell efficiency we
perform lateral scans of various magnitudes (like splitting of quasi-Fermi levels, AFM-surface contours) recorded by
a confocal setup with high lateral resolution (≤ 1 μm) for different scan sizes and at different sample positions. We
compare these sets of magnitudes by their respective Minkowski-opening-operations, extract correlation coefficients,
determine average values and their respective statistical momenta (variances), and extrapolate minimum scan sizes
for the collection of statistically representative data.
100 kW CPV Power Plants: Setup, Performance and Technology Validation at Isofoton
Creators: name: Díaz, V.
name: Hernández, R.
name: Rodriguez, E.
name: Expósito, D.
name: Cabrera, J.
name: López, J.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
Terrestrial Concentrator Systems

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 999-1001
description: This paper shows the field results of ISOFOTON’s CPV technology based on III-V solar cells and TIR-R Optics. In the frame of ISFOC project ISOFOTON has designed and developed in the field four (4) Power Plants of 100KW each as a demonstration of the suitability of CPV technology for going ahead with the market penetration of this technology.
On this paper, the measurements and key issues of the manufacturing and deployment in the field are shown.
Effect of Single-Walled Carbon Nanotube on the Properties of Tetra Substituted Zinc Phthalocyanine-Uridine Conjugate
Creators: name: Awolope, Racheal O.
Publisher: name: Research Administration Division
Year: 2023
Subjects: Fluorescence
Single-walled carbon nanotubes
Triplet quantum yields
Uridine
Zinc tetra-phenoxycarboxy phthalocyanine

description: Science & Technology Asia, 28, 3, 18-28
Continuous Solar Simulator for Concentrator Photovoltaic Systems
Creators: name: Thibert, T.
name: Hellin, M.-L.
name: Loicq, J.
name: Mazy, E.
name: Gillis, J.-M.
name: Languy, F.
name: Habraken, S.
name: Lecat, J.-H.
name: Defise, J.-M.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
Terrestrial Concentrator Systems

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 1018-1020
description: A continuous solar simulator for measuring performance of concentrator photovoltaic (CPV) systems
is presented. The illumination system is based on a Xenon lamp, a homogenizer rod, shaping optics and a 30cm
diameter collimator. The design optimises the reproduction of the characteristics of direct solar illumination: 32’
divergence, high spatial homogeneity, sun-like spectral distribution, with a maximum intensity of 250W/m². It
accommodates pass-band and attenuation filters to tune the beam output. It operates in continuous mode, allowing
to investigate CPV thermal aspects as well. The present paper addresses the concept design of the solar simulator
and associated performance results.
On the connection between dissipative particle dynamics and the Itô-Stratonovich dilemma
Creators: name: Farago, Oded
name: Grønbech-Jensen, Niels
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Dissipative Particle Dynamics (DPD) is a popular simulation model for investigating hydrodynamic behavior of systems with non-negligible equilibrium thermal fluctuations. DPD employs soft core repulsive interactions between the system particles, thus allowing them to overlap. This supposedly permits relatively large integration time steps, which is an important feature for simulations on large temporal scales. In practice, however, an increase in the integration time step leads to increasingly larger systematic errors in the sampling statistics. Here, we demonstrate that the prime origin of these systematic errors is the multiplicative nature of the thermal noise term in Langevin's equation, i.e., the fact that it depends on the instantaneous coordinates of the particles. This lead to an ambiguity in the interpretation of the stochastic differential Langevin equation, known as the Itô-Stratonovich dilemma. Based on insights from previous studies of the dilemma, we propose a novel algorithm for DPD simulations exhibiting almost an order of magnitude improvement in accuracy, and nearly twice the efficiency of commonly used DPD Langevin thermostats.
description: 6 pages, 3 figures, Accepted for publication in J. Chem. Phys
Evaluation of a Solar Thermophotovoltaic (STPV) System under the Real Environmental Conditions of Abu Dhabi
Creators: name: Mokri, A.
name: Emziane, M.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
Terrestrial Concentrator Systems

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 1025-1027
description: A solar thermo-photovoltaic (STPV) power system was designed in the past for space applications. The
developed system has thermal storage features and can provide an unmanned spacecraft with power during 24 hours
by assuming that the vehicle receives the solar irradiation during only two hours in each period of three hours. This
can be achieved by adding a piece of a phase change material to the system. In this study, we are studying storage
capability of the system under terrestrial conditions. A numerical model is developed to assess the solar thermophotovoltaic
system under the real climatic conditions of Abu Dhabi, UAE.
Dynamical supersymmetry breaking on magnetized tori and orbifolds
Creators: name: Abe, Hiroyuki
name: Kobayashi, Tatsuo
name: Sumita, Keigo
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We construct several dynamical supersymmetry breaking (DSB) models within a single ten-dimensional supersymmetric Yang-Mills (SYM) theory, compactified on magnetized tori with or without orbifolding. We study the case that the supersymmetry breaking is triggered by a strong dynamics of $SU(N_C)$ SYM theory with $N_F$ flavors contained in the four-dimensional effective theory. We show several configurations of magnetic fluxes and orbifolds, those potentially yield, below the compactification scale, the field contents and couplings required for triggering DSB. We especially find a class of self-complete DSB models on orbifolds, where all the extra fields are eliminated by the orbifold projection and DSB successfully occurs within the given framework. Comments on some perspectives for associating the obtained DSB models with the other sectors, such as the visible sector and another hidden sector for, e.g., stabilizing moduli, are also given.
description: 18 pages
Activity Studies and Identification of Chemical Constituents in Rhizomes from Zingiberaceae and Acoraceae Families
Creators: name: FAIZAL ABDUL HAMID
Publisher: name: Monash University
Year: 2019
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: 30502 Natural Products Chemistry
subject: FOS: Chemical sciences
subject: Biotechnology

description: 5 rhizomes commonly used in traditional medicine were subjected to antibacterial, antioxidant and antiproliferative assays to determine active compounds. Curcuma zedoaria was selected for further analysis against environmental biofilms. The active compound was determined to be carvacrol.
A computationally assisted spectroscopic technique to measure secondary electron emission coefficients in radio frequency plasmas
Creators: name: Daksha, M.
name: Berger, B.
name: Schuengel, E.
name: Korolov, I.
name: Derzsi, A.
name: Koepke, M.
name: Donko, Z.
name: Schulze, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A Computationally Assisted Spectroscopic Technique to measure secondary electron emission coefficients ($γ$-CAST) in capacitively-coupled radio-frequency plasmas is proposed. This non-intrusive, sensitive diagnostic is based on a combination of Phase Resolved Optical Emission Spectroscopy and particle-based kinetic simulations. In such plasmas (under most conditions in electropositive gases) the spatio-temporally resolved electron-impact excitation/ionization rate features two distinct maxima adjacent to each electrode at different times within each RF period. While one maximum is the consequence of the energy gain of electrons due to sheath expansion, the second maximum is produced by secondary electrons accelerated towards the plasma bulk by the sheath electric field at the time of maximum voltage drop across the adjacent sheath. Due to these different excitation/ionization mechanisms, the ratio of the intensities of these maxima is very sensitive to the secondary electron emission coefficient $γ$. This sensitvity, in turn, allows $γ$ to be determined by comparing experimental excitation profiles and simulation data obtained with various $γ$-coefficients. The diagnostic, tested here in a geometrically symmetric argon discharge, yields an effective secondary electron emission coefficient of $γ= 0.066 \pm 0.01$ for stainless steel electrodes.
Analysis of the Operational Behavior and Long-Term Performance of a CIS PV System
Creators: name: Musikowski, H.-D.
name: Styczynski, Z.A.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV System Engineering and Standards, Socio-economic Aspects, and Sustainability

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 3942-3946
description: A large number of grid connected photovoltaic (PV) systems is generating environment-friendly electricity
in Europe today. Most of these systems use crystalline solar modules of silicon, which are well researched and
have been observed in operation for more than 30 years. At present a continuous increase can be seen of the installed
capacity of PV systems globally, and the rate of PV systems using CdTe or CIS solar modules is growing. However,
we still know too little about the aging of such thin-film PV systems and about their operational behavior under real
environmental conditions during a long running time. This paper presents the results of a long-term research project
in which we have been observing and checking the operational behavior and long-term performance of a CIS PV system
for more than six years.
Approximated Analytical Solution to an Ebola Optimal Control Problem
Creators: name: Hincapie-Palacio, Doracelly
name: Ospina, Juan
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optimization and Control (math.OC)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Mathematics
subject: FOS: Biological sciences
subject: 49-04, 49K15, 92D30

description: An analytical expression for the optimal control of an Ebola problem is obtained. The analytical solution is found as a first-order approximation to the Pontryagin Maximum Principle via the Euler-Lagrange equation. An implementation of the method is given using the computer algebra system Maple. Our analytical solutions confirm the results recently reported in the literature using numerical methods.
description: This is a preprint of a paper whose final and definite form is in International Journal for Computational Methods in Engineering Science and Mechanics, ISSN 1550-2287 (Print), 1550-2295 (Online). Paper Submitted 14-Jul-2015; Revised 29-Oct-2015; Accepted for publication 09-Dec-2015
Onepoint discontinuity set of separately continuous functions on the product of two compact spaces
Creators: name: Mykhaylyuk, V. V
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Topology (math.GN)
subject: FOS: Mathematics

description: It is investigated the existence of a separately continuous function $f:X\times Y\to \mathbb R$ with an onepoint set of discontinuity for topological spaces $X$ and $Y$ which satisfy compactness type conditions. In particular, it is shown that for compact spaces $X$ and $Y$ and nonizolated points $x_0\in X$ and $y_0\in Y$ there exists a separately continuous function $f:X\times Y\to \mathbb R$ with the set $\{(x_0,y_0)\}$ of discontinuity points if and only if there exist sequences of nonempty functional open sets which converge to $x_0$ and $y_0$ in $X$ and $Y$ respectively.
Selective Laser Melting of Ti6Al4V Lattice Structures for Bone Implants
Creators: name: EZGI ONAL
Publisher: name: Monash University
Year: 2019
Subjects: subject: 91299 Materials Engineering not elsewhere classified
subject: FOS: Materials engineering
subject: 90301 Biomaterials
subject: FOS: Medical engineering

description: As the 3D printing technology moves forward, new materials and designs with complicated features come alive. This PhD project aimed to investigate novel porous designs for orthopedic implants. Complex lattice scaffolds were fabricated by selective laser melting technology with Titanium-6-Aluminium-4-Vanadium alloy and characterised to optimise their morphological, mechanical and biological performance. The designs include functionally gradient and hollow-beam lattice structures. Furthermore, an alternative processing strategy, namely single point exposure, was investigated. This thesis contributes to the field of next-generation additively manufactured customised orthopedic implants that can mimic the host bone and can be further functionalised.
Dominating sets in projective planes
Creators: name: Héger, Tamás
name: Nagy, Zoltán Lóránt
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We describe small dominating sets of the incidence graphs of finite projective planes by establishing a stability result which shows that dominating sets are strongly related to blocking and covering sets. Our main result states that if a dominating set in a projective plane of order $q>81$ is smaller than $2q+2[\sqrt{q}]+2$ (i.e., twice the size of a Baer subplane), then it contains either all but possibly one points of a line or all but possibly one lines through a point. Furthermore, we completely characterize dominating sets of size at most $2q+\sqrt{q}+1$. In Desarguesian planes, we could rely on strong stability results on blocking sets to show that if a dominating set is sufficiently smaller than 3q, then it consists of the union of a blocking set and a covering set apart from a few points and lines.
description: 19 pages
Evaluation of soil aeration as applicable to underground metal corrosion
Creators: name: RUKSHAN MALIQ AZOOR
Publisher: name: Monash University
Year: 2020
Subjects: subject: 90505 Infrastructure Engineering and Asset Management
subject: FOS: Civil engineering
subject: 30604 Electrochemistry
subject: FOS: Chemical sciences
subject: 90501 Civil Geotechnical Engineering

description: This thesis examines the influence of soil aeration on the patterns and levels of corrosion experienced by buried metallic infrastructure such as pipelines. It reports results from a multiphysics finite element modelling study and a multidisciplinary experimental programme spanning applied electrochemistry, soil mechanics and geotechnical engineering. The thesis highlights a previously unreported relationship between soil hydraulic properties and underground corrosion, and provides insights into the standard backfill compaction practices for buried metallic infrastructure in relation to corrosion.
Performance Analysis of the First Medium Size PV-Plant in Burkina Faso on the City Grid of Ouagadougou
Creators: name: Vervaart, M.
name: Merten, J.
name: Cool, R.
name: Cadin, T.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV System Engineering and Standards, Socio-economic Aspects, and Sustainability

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 3947-3951
description: The ‘Société Générale de Banques au Burkina’ (SGBB) installed the first 80kWp grid-connected
system on the roof of their headquarters in Ouagadougou in January 2010. The system was developed by Photalia
(Groupe Vergnet, France) and was inaugurated on the 16th of April. Since in Burkina Faso no feed-in tariffs are
applicable (it is not even allowed to inject energy back into the grid!) the system is rather particular in energy
management and is exposed to multiple extreme circumstances. The chosen solution is direct consumption of the
instantaneous production without storage batteries. On the other hand, the extreme circumstances of climate and
supply of electricity in Burkina Faso have led to put in place an appropriate monitoring system. This study
provides the results of the first month of monitoring data and an overview of system performance.
A Novel Flexible Silver Paste Enables Thin Film Photovoltaic Flex Solar Cells
Creators: name: Hwang, H.S.
name: Kresge, L.
name: Slattery, J.
name: Lee, N.C.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
CIS, CdTe and Other (II-VI) Ternary Thin Film Cells

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2641-2649
description: A flexible high performance Ag metallization paste LTTF6363 has been developed for thin film photovoltaic flex solar cells.
The binder of the paste is soft epoxy-based resin system. Compared with thermoplastic paste system, LTTF6363 exhibits
superior adhesion and is flexible. These features enable the deployment of flex solar panels where tolerance against
rolling or bending is critical. LTTF6363 also displays excellent print characteristics and non-slump performance. This is
extremely important for maximizing effective open area on solar cell. LTTF6363 exhibits very good solderability, thus
allows easy soldering connection with other electronic devices.
Counting triangulations of some classes of subdivided convex polygons
Creators: name: Asinowski, Andrei
name: Krattenthaler, Christian
name: Mansour, Toufik
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: Computational Geometry (cs.CG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 05A10, 05A15, 05A16

description: We compute the number of triangulations of a convex $k$-gon each of whose sides is subdivided by $r-1$ points. We find explicit formulas and generating functions, and we determine the asymptotic behaviour of these numbers as $k$ and/or $r$ tend to infinity. We connect these results with the question of finding the planar set of points in general position that has the minimum possible number of triangulations - a well-known open problem from computational geometry.
description: 26 pages, 11 figures
Multicrystalline Silicon Wafers Prepared by Sintering of Silicon Bed Powders and Re-Crystallization Using ZMR
Creators: name: Bellanger, P.
name: Grau, M.
name: Sow, A.
name: Kaminski, A.
name: Blangis, D.
name: Serra, J.M.
name: Vallêra, A.
name: Dubois, S.
name: Straboni, A.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1851-1854
description: In this work, we present an analysis of Si samples realised by hot pressing of micro sized silicon powders
supplied by different laboratories and industrial suppliers. Using optimized conditions, a doped polycrystalline material is
obtained with a high purity and a density higher than 90%; however at this stage, the material microstructure shows grains
limited to a few microns. Therefore, the wafers were recrystallized by ZMR leading to a molten zone on both sides of the
wafer which extends across the whole thickness of the wafer. By this way, large grains in the centimetre range are obtained
along the pulling direction. The semiconductor material was then characterized using electronic and optical microscopy; large
regions of the material were found with a very low dislocation density. Impurity and doping contents were determined by
GDMS. FTIR was used to measure oxygen and carbon concentration; resistivity, mobility, carrier densities and lifetimes
were also measured. The wafers showed excellent majority carrier mobility around 200 cm2.V-1.s-1; a good cristallinity within
the grains and a doping concentration in the 1016 to 1017 cm-3 range. Metallic contamination was in the ppm range. The 8,9%
cell efficiency obtained, using standard PN junction, is very promising.
New Results on Charged Compact Boson Stars
Creators: name: Kumar, Sanjeev
name: Kulshreshtha, Usha
name: Kulshreshtha, Daya Shankar
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work we present some new results which we have obtained in a study of the phase diagram of charged compact boson stars in the theory involving massive complex scalar fields coupled to the U(1) gauge field and gravity in a conical potential in the presence of a cosmological constant $Λ$ which we treat as a free parameter taking positive and negative values and thereby allowing us to study the theory in the de Sitter and Anti de Sitter spaces respectively. In our studies, we obtain four bifurcation points (possibility of more bifurcation points being not ruled out) in the de Sitter region. We present a detailed discussion of the various regions in our phase diagram with respect to four bifurcation points. Our theory is seen to have rich physics in a particular domain for positive values of $Λ$ which is consistent with the accelerated expansion of the universe.
description: 5 pages, 5 figures