cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A New Approach to Determine the Crosslinking in Polyethylene-Vinyl Acetate via Raman Spectroscopy
Creators: name: Jäger, S.
name: Wittmann, S.
name: Heindl, M.
name: Linsenmeyer, A.
name: Kunz, T.
name: Camus, C.
name: Hauch, J.
name: Brabec, C.J.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
PV Cells and Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1815-1818
description: In the lifetime of photovoltaic (PV) modules, the quality and the stability of the encapsulation are
important characteristics as they affect the electrical isolation as well as the weathering protection of the photovoltaic
cells. One of the most commonly used encapsulation materials is ethylene vinyl acetate (EVA), which is crosslinked
during the lamination process. The degree of crosslinking is decisive regarding the long-term stability of photovoltaic
modules. Therefore, manufacturers look for technologies for inline evaluation of the EVA crosslinking degree. In this
work, the authors present a new method to evaluate the crosslinking degree of EVA based on Raman spectral
analysis. We found a direct correlation between the degree of crosslinking and the Raman peak at 1649 cm-1, which
presumably originates from residual C=C double bonds in EVA.
DSC Methods for a Fast Determination of the Crosslinking Degree of EVA
Creators: name: Ogier, S.
name: Chapron, D.
name: Royaud, I.
name: Ponçot, M.
name: Vite, M.
name: Hidalgo, M.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
PV Cells and Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1819-1822
description: The determination of the crosslinking degree is a key factor to ensure EVA reliability when used as a PV
encapsulant. Several methods exist. Some of them, such as rheological measurements or Soxhlet extraction (gel
content) are rather difficult to perform, or time-consuming. To simplify the determination of the crosslinking (XL)
degree, calorimetric measurements have been developed. A first method called the Melt/Freeze method (MF) is based
upon parameters reflecting the crosslinking influence on the crystallization behavior. Thermal fractionation of EVA
crosslinked at several degrees, performed with the Differential Scanning Calorimetry – Successive Self-nucleation and
Annealing (DSC-SSA) technique, shows a narrowing of the crystallite size distribution towards smaller sizes. This
confirms the link between the crosslinking reaction, and its effect on the crystallization behaviour. An alternative
method, the Residual Enthalpy (RE) method, follows the crosslinking agents’ depletion as a function of crosslinking.
A comparison is made between both DSC methods and rheology, taken as a reference. The MF method fits better with
rheological measurements than the RE one. However the latter method is very useful to identify the crosslinking agenttype
of mix.
Spontaneous decay of an atom excited in a dense and disordered atomic ensemble: quantum microscopic approach
Creators: name: Kuraptsev, A. S.
name: Sokolov, I. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: On the basis of general theoretical results developed previously in [I. M. Sokolov et al., J. Exp. Theor. Phys. 112, 246 (2011)], we analyze spontaneous decay of a single atom inside cold atomic clouds under conditions when the averaged interatomic separation is less or comparable with the wavelength of quasi resonant radiation. Beyond the decay dynamics we analyze shifts of resonance as well as distortion of the spectral shape of the atomic transition.
description: 7 pages, 5 figures
Comparative Studies in Degradation Behavior of Single-Cell Module by Pressure Cooker Test (PCT) and Extended Damp Heat (DH) Test
Creators: name: Li, Y.T.
name: Tung, C.-M.
name: Hamadani, B.H.
name: Gu, X.-H.
name: Yang, W.-L.
name: Lien, C.
name: Wu, H.-S.
name: Yu, P.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
PV Cells and Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1808-1811
description: Recently, standard of IEC61215 for PV industry which designed to identify early failures of photovoltaic
(PV) modules within the first several years are insufficient to the market. More and more stringent accelerated aging
protocols, such as extended Damp Heat (DH) tests or Pressure Cooker Tests (PCT), are proposed in order to ensure
longer PV modules lifetime. Compared to DH tests, PCT provided an alternation to evaluate durability of PV
encapsulation quickly through higher temperature, humidity and pressure. Nevertheless, it is still unclear about the
relationship between these two accelerated tests. Thus, the primary object of this work is to investigate suitable
encapsulation of single-cell-laminates PV modules for PCT and extended DH test and compare their degradation
behaviors. Besides, we also study the main degradation mechanism for PV modules aged by PCT through
electroluminescence (EL), Spectrum Response (SR) and SEM measurement. Our result shows only less than 3 % of
power degradation is measured for 4000 hours of extended DH test while around 30% of power degradation for 450
hour of PCT. Similar increase trend for these two tests are measured in series resistance (Rs) and it could be mainly
attributed to corrosion of Sn and Ag along ribbon and fingers, which could be observed from EL image and SEM
measurement.
Drell-Yan as an avenue to test noncommutative Standard Model at the Large Hadron Collider
Creators: name: Selvaganapathy, J
name: Das, Prasanta Kumar
name: Konar, Partha
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study the Drell-Yan process at the Large Hadron Collider in presence of the noncommutative extension of standard model. Using the Seiberg-Witten map, we calculate the production cross-section to the first order in the noncommutative parameter $Θ_{μν}$. Although this idea is evolving for long, limited amount of phenomenological analysis was done so far and dominantly in the context of linear collider. Some outstanding feature from this non-minimal noncommutative standard model not only modify the couplings over SM production channel, also allow additional nonstandard vertices which can play a significant role. Hence in the Drell-Yan process, as studied in present analysis, one also needs to account for gluon fusion process at the tree level. Some of the characteristic signatures such as oscillatory azimuthal distributions are outcome of the momentum dependent effective couplings. We explore the noncommutative scale $Λ_{NC} \ge 0.4~\rm{TeV}$ considering different machine energy ranging from $7~\rm{TeV}$ to $13~\rm{TeV}$.
description: 17 Pages,6 Figures and 2 Tables
Effect of Different UV Cut off Wavelength of EVA Encapsulant on Cr-Si PV Module's Performance & Reliability
Creators: name: Singh, A.K.
name: Singh, R.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
PV Cells and Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1823-1825
description: High energy UV radiations are harmful for polymeric materials such as Encapsulant & Backsheet used
in the manufacture of PV modules. To protect the PV modules against UV degradation, EVA Encapsulant is added
with additive, which cuts off the harmful wavelength present in the sunlight. The PV industry is gradually moving
towards Lower UV cut-off wavelengths for the front side of EVA Encapsulant in order to harness the UV radiation
up to 300nm, as against 360nm conventionally. The present study was performed to validate (i). The effect of
lowering the UV cut off wavelength on the optical & mechanical properties of EVA Encapsulant. (ii). The effect of
lowering the UV cut off wavelength on the performance & durability of PV modules.
The cured EVA sheet of 360 nm, 300 nm & 234 nm UV cut-off wavelengths were exposed to UV radiation of 340
nm wavelength up to 1500 hrs. The performance of the EVA sheets were analyzed by measuring optical
transmittance, yellowness index & tensile strength. It was found that there is no effect of lower UV cut-off
wavelength on optical & mechanical properties of EVA Encapsulant.
The solar PV modules were made using 360 nm, 300 nm & 234 nm UV cut-off wavelengths EVA encapsulants on
the front side of the module and 360 nm on the back side. Each modules with these EVA Encapsulant were exposed
to UV radiation of 280nm -385 nm wavelengths for 2000 hrs. It was found that up to 1500 hrs of exposer, the power
loss in all there type modules were comparable. However, the power loss after 2000 hrs was higher in case of lower
UV cut-off wavelengths Encapsulants. The UV cut-off wavelength of 360 nm for the front side of EVA is
recommended to exhibit better reliability.
Gate-tunable transport properties of in-situ capped Bi$_2$Te$_3$ topological insulator thin films
Creators: name: Ngabonziza, Prosper
name: Stehno, Martin P.
name: Myoren, Hiroaki
name: Neumann, Viola A.
name: Koster, Gertjan
name: Brinkman, Alexander
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Combining the ability to prepare high-quality, intrinsic Bi$_2$Te$_3$ topological insulator thin films of low carrier density with in-situ protective capping, we demonstrate a pronounced, gate-tunable change in transport properties of Bi$_2$Te$_3$ thin films. Using a back-gate, the carrier density is tuned by a factor of $\sim 7$ in Al$_2$O$_3$ capped Bi$_2$Te$_3$ sample and by a factor of $\sim 2$ in Te capped Bi$_2$Te$_3$ films. We achieve full depletion of bulk carriers, which allows us to access the topological transport regime dominated by surface state conduction. When the Fermi level is placed in the bulk band gap, we observe the presence of two coherent conduction channels associated with the two decoupled surfaces. Our magnetotransport results show that the combination of capping layers and electrostatic tuning of the Fermi level provide a technological platform to investigate the topological properties of surface states in transport experiments and pave the way towards the implementation of a variety of topological quantum devices.
description: 10 pages, 4 figures and 1 table
Benchmarking Automated Machine Learning Methods for Price Forecasting Applications
Creators: name: Stühler, Horst
name: Zöller, Marc-André
name: Klau, Dennis
name: Beiderwellen-Bedrikow, Alexandre
name: Tutschku, Christian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Price forecasting for used construction equipment is a challenging task due to spatial and temporal price fluctuations. It is thus of high interest to automate the forecasting process based on current market data. Even though applying machine learning (ML) to these data represents a promising approach to predict the residual value of certain tools, it is hard to implement for small and medium-sized enterprises due to their insufficient ML expertise. To this end, we demonstrate the possibility of substituting manually created ML pipelines with automated machine learning (AutoML) solutions, which automatically generate the underlying pipelines. We combine AutoML methods with the domain knowledge of the companies. Based on the CRISP-DM process, we split the manual ML pipeline into a machine learning and non-machine learning part. To take all complex industrial requirements into account and to demonstrate the applicability of our new approach, we designed a novel metric named method evaluation score, which incorporates the most important technical and non-technical metrics for quality and usability. Based on this metric, we show in a case study for the industrial use case of price forecasting, that domain knowledge combined with AutoML can weaken the dependence on ML experts for innovative small and medium-sized enterprises which are interested in conducting such solutions.
description: Accepted at 12th International Conference on Data Science, Technology and Applications (DATA 2023)
Eco-Solar Factory: 40% Plus Eco-Efficiency Gains in the Photovoltaic Value Chain with Minimised Resource and Energy Consumption by Closed Loop Systems
Creators: name: Bellmann, M.P.
name: Roligheten, R.
name: Park, G.S.
name: Denafas, J.
name: Buchholz, F.
name: Einhaus, R.
name: Lombardi, I.
name: Ehlen, B.
name: Wambach, K.
name: Romero, P.
name: Bollar, A.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
Sustainability and Recycling

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1758-1763
description: The European H2020-FOF-13-2015 Eco-Solar project, that started in October 2015 envisions to
increase resource and energy efficiency over the entire photovoltaic value chain, while simultaneously maximising
recycling and remanufacturing possibilities, by introducing design for recovery, repair and reuse, and collaborating
for improvements in waste reduction. Reusing materials and reducing the consumption of raw materials will make
solar cell panels both cheaper and greener. When fewer resources, including critical materials are needed, the
emissions of greenhouse gases from their production will decrease. Likewise, the energy consumed by these
processes will be paid off faster than it is today. All this should improve market penetration for European PV
producers. The overarching aim is to strengthen European PV companies who are driven by innovation and who are
able to secure Europe’s power supply in a sustainable way. The paper presents the methodology followed by Eco-
Solar to reach this ambitious goal.
Additional file 2 of Effectiveness and safety of GLP-1 receptor agonists versus SGLT-2 inhibitors in type 2 diabetes: an Italian cohort study
Creators: name: Baviera, Marta
name: Foresta, Andreana
name: Colacioppo, Pierluca
name: Macaluso, Giulia
name: Roncaglioni, Maria Carla
name: Tettamanti, Mauro
name: Fortino, Ida
name: Genovese, Stefano
name: Caruso, Irene
name: Giorgino, Francesco
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Marine Biology
subject: Cancer

description: Additional file 2: Appendix.
Analysis of the Energy and Economic Influence of the O&M Annual Cost in the Profitability of PV Systems
Creators: name: Lomas Monzón, J.C.
name: Muñoz-Cerón, E.
name: Nofuentes Garrido, G.
name: De La Casa Higueras, J.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
Operation of PV Systems

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1784-1787
description: In this paper, the energy production of a PV plant located in the South of Spain is compared with the
annual O&M cost. This comparison has been made since its commissioning in late 2007, where the plant was subscribed
under the most favorable legislative framework that has ever existed in Spain for these systems (RD 661/2007). The
energetic and economical influence of this O&M cost in the profitability of the PV plant will be addressed since then. In
the literature it has been superficially covered that the reduction of the annual expenditures in the O&M tasks has a
positive effect in the profitability of the investment, precisely in the Levelised Cost of Electricity. On the other hand, this
reduction in the maintenance also means a decrease in the energy generated by the system, which has a negative effect in
the electrical production of the plant. Consequently, the incomes received for the energy injected to the grid also
decrease. Which of these two effects of the annual O&M expenditure is larger, the increase in the profitability of the
investment or the decrease in electricity sales? In the case of Spain, according to the existing legal framework,
unfortunately, seems to be more profitable to “abandon” the O&M tasks of the plant rather than keep on investing in
improving its performance yield.
Thermoelectric performance of spin Seebeck effect in Fe3O4/Pt-based thin film heterostructures
Creators: name: Ramos, R.
name: Anadon, A.
name: Lucas, I.
name: Uchida, K.
name: Algarabel, P. A.
name: Morellon, L.
name: Aguirre, M. H.
name: Saitoh, E.
name: Ibarra, M. R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report a systematic study on the thermoelectric performance of spin Seebeck devices based on Fe3O4/Pt junction systems. We explore two types of device geometries: a spin Hall thermopile and spin Seebeck multilayer structures. The spin Hall thermopile increases the sensitivity of the spin Seebeck effect, while the increase in the sample internal resistance has a detrimental effect on the output power. We found that the spin Seebeck multilayers can overcome this limitation since the multilayers exhibit the enhancement of the thermoelectric voltage and the reduction of the internal resistance simultaneously, therefore resulting in significant power enhancement. This result demonstrates that the multilayer structures are useful for improving the thermoelectric performance of the spin Seebeck effect.
description: This paper has been accepted in APL Materials, 15 pages, 4 figures
Kinematics and stability of high-mass protostellar disk candidates at sub-arcsecond resolution -- Insights from the IRAM NOEMA large program CORE
Creators: name: Ahmadi, Aida
name: Beuther, H.
name: Bosco, F.
name: Gieser, C.
name: Suri, S.
name: Mottram, J. C.
name: Kuiper, R.
name: Henning, Th.
name: Sánchez-Monge, Á.
name: Linz, H.
name: Pudritz, R. E.
name: Semenov, D.
name: Winters, J. M.
name: Möller, T.
name: Beltrán, M. T.
name: Csengeri, T.
name: Galván-Madrid, R.
name: Johnston, K. G.
name: Keto, E.
name: Klaassen, P. D.
name: Leurini, S.
name: Longmore, S. N.
name: Lumsden, S. L.
name: Maud, L. T.
name: Moscadelli, L.
name: Palau, A.
name: Peters, T.
name: Ragan, S. E.
name: Urquhart, J. S.
name: Zhang, Q.
name: Zinnecker, H.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The fragmentation mode of high-mass molecular clumps and the accretion processes that form the most massive stars ($M\gtrsim 8M_\odot$) are still not well understood. To this end, we have undertaken a large observational program (CORE) making use of interferometric observations from the Northern Extended Millimetre Array (NOEMA) for a sample of 20 luminous ($L>10^4L_\odot$) protostellar objects in the 1.37 mm wavelength regime in both continuum and line emission, reaching $\sim$0.4" resolution (800 au at 2 kpc). Using the dense gas tracer CH$_3$CN, we find velocity gradients across 13 cores perpendicular to the directions of bipolar molecular outflows, making them excellent disk candidates. Specific angular momentum ($j$) radial profiles are on average $\sim10^{-3}$ km /s pc and follow $j \propto r^{1.7}$, consistent with a poorly resolved rotating and infalling envelope/disk model. Fitting the velocity profiles with a Keplerian model, we find protostellar masses in the range of $\sim 10-25$ $M_\odot$. Modelling the level population of CH$_3$CN lines, we present temperature maps and find median gas temperatures in the range $70-210$ K. We create Toomre $Q$ maps to study the stability of the disks and find almost all (11 of 13) disk candidates to be prone to fragmentation due to gravitational instabilities at the scales probed by our observations. In particular, disks with masses greater than $\sim10-20\%$ of the mass of their host (proto)stars are Toomre unstable, and more luminous protostellar objects tend to have disks that are more massive and hence more prone to fragmentation. Our finings show that most disks around high-mass protostars are prone to disk fragmentation early in their formation due to their high disk to stellar mass ratio. This impacts the accretion evolution of high-mass protostars which will have significant implications for the formation of the most massive stars.
description: 27 pages, 12 figures, 6 appendices - accepted for publication in Astronomy and Astrophysics
Assessing the effects of heat inactivation of plasma samples on cell-free DNA fragmentomics: limited impacts observed
Creators: name: 罗宇雪(Yuxue Luo)
Publisher: name: CNGB
Year: 2023
Subjects: Genome sequencing
Multiisolate

description: cfDNA is a promising analyte for non-invasive liquid biopsy in disease diagnosis and monitoring. In infectious disease researches, plasma samples are routinely heat-inactivated prior to downstream analysis. However, the impacts of heat inactivation on cfDNA fragmentomic analysis remain largely unclear, potentially altering the characteristics of cfDNA. To address this gap, we performed a comprehensive investigation of cfDNA concentration and fragmentomics in 21 plasma samples from 7 heathy individuals, by comparing sample groups treated with and without the heat inactivation at 56 degrees Celsius for 30 min. Our results showed that, plasma samples treated with once or twice heat-inactivation did not exhibit significant alterations in the primary characteristics of cfDNA, including cfDNA concentration, size profiles, end motif features, and genome-wide distribution, compared to non-heat-inactivated sample. Our findings suggest that heat-inactivated cfDNA can be effectively utilized for non-invasive liquid biopsy in the researches of infectious diseases, with no significant impact on host cfDNA level and fragmetomic properties. This study provided essential insights into the effects of heat inactivation on cfDNA properties and will contribute to the development of reliable non-invasive biomarkers for infectious disease.
MAMBO-V: Dynamic Side-Channel Leakage Analysis on RISC-V
Creators: name: Wichelmann, Jan
name: Peredy, Christopher
name: Sieck, Florian
name: Pätschke, Anna
name: Eisenbarth, Thomas
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: RISC-V is an emerging technology, with applications ranging from embedded devices to high-performance servers. Therefore, more and more security-critical workloads will be conducted with code that is compiled for RISC-V. Well-known microarchitectural side-channel attacks against established platforms like x86 apply to RISC-V CPUs as well. As RISC-V does not mandate any hardware-based side-channel countermeasures, a piece of code compiled for a generic RISC-V CPU in a cloud server cannot make safe assumptions about the microarchitecture on which it is running. Existing tools for aiding software-level precautions by checking side-channel vulnerabilities on source code or x86 binaries are not compatible with RISC-V machine code. In this work, we study the requirements and goals of architecture-specific leakage analysis for RISC-V and illustrate how to achieve these goals with the help of fast and precise dynamic binary analysis. We implement all necessary building blocks for finding side-channel leakages on RISC-V, while relying on existing mature solutions when possible. Our leakage analysis builds upon the modular side-channel analysis framework Microwalk, that examines execution traces for leakage through secret-dependent memory accesses or branches. To provide suitable traces, we port the ARM dynamic binary instrumentation tool MAMBO to RISC-V. Our port named MAMBO-V can instrument arbitrary binaries which use the 64-bit general purpose instruction set. We evaluate our toolchain on several cryptographic libraries with RISC-V support and identify multiple exploitable leakages.
description: 20 pages
Interferon gamma (IFN [subscript gamma]) during human pregnancy
Creators: name: Veith, Gaylene.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Testing the cores of first ascent red-giant stars using the period spacing of g modes
Creators: name: Lagarde, Nadège
name: Bossini, Diego
name: Miglio, Andrea
name: Vrard, Mathieu
name: Mosser, Benoit
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In the context of the determination of stellar properties using asteroseismology, we study the influence of rotation and convective-core overshooting on the properties of red-giant stars. We used models in order to investigate the effects of these mechanisms on the asymptotic period spacing of gravity modes ($ΔΠ_1$) of red-giant stars that ignite He burning in degenerate conditions (M$\lesssim$2.0 M$_{\odot}$). We also compare the predictions of these models with Kepler observations. For a given $Δν$, $ΔΠ_1$ depends not only on the stellar mass, but also on mixing processes that can affect the structure of the core. We find that in the case of more evolved red-giant-branch (RGB) stars and regardless of the transport processes occurring in their interiors, the observed $ΔΠ_1$ can provide information as to their stellar luminosity, within ~10-20%. In general, the trends of $ΔΠ_1$ with respect to mass and metallicity that are observed in Kepler red-giant stars are well reproduced by the models.
description: 5pages, 6 figures
A resonant inelastic x-ray scattering study of the spin and charge excitations in the overdoped superconductor La1.77Sr0.23CuO4
Creators: name: Monney, C.
name: Schmitt, T.
name: Matt, C. E.
name: Mesot, J.
name: Strocov, V. N.
name: Lipscombe, O. J.
name: Hayden, S. M.
name: Chang, 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 present a resonant inelastic x-ray scattering (RIXS) study of spin and charge excitations in overdoped La1.77Sr0.23CuO4 along two high-symmetry directions. The line shape of these excitations is analyzed and they are shown to be highly overdamped. Their spectral weight and damping are found to be strongly momentum dependent. Qualitative agreement between these observations and a calculated RPA susceptibility is obtained for this overdoped compound, implying that a significant contribution to the RIXS signal stems from a continuum of charge excitations. Furthermore, this suggests that the spin-excitations in the overdoped regime can be captured qualitatively by an itinerant picture. Our calculations also predict a new low-energy spin excitation branch to exist along the nodal direction near the zone center. With the energy resolution of the present experiment, this branch is not resolvable but we show that next generation of high-resolution spectrometers will be able to test this prediction.
description: 7 pages, 6 figures; accepted for publication in Phys. Rev. B
New Findings in Fire Prevention and Fire Fighting of PV Installations
Creators: name: Muntwyler, U.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
Sustainability and Recycling

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1764-1767
description: Fire prevention of PV installations is a key research field of the PV Laboratory of the Berner
Fachhochschule1. In a comprehensive research project of TÜV-Rheinland (with participation of the PV laboratory of
the Berner Fachhochschule) a certain number of fire incidents with and on PV installations had been reported. In the
state of Berne, the state owned insurance company “Berner Gebäudeversicherung GVB” started together with the PV
Laboratory a three year research project on the topic. The research should lead in practical advices for the firemen
and their instructors in the state of Berne2.
Investigations about the cross interoperability of PV connectors showed that this creates a serious quality problem in
PV installations3. Through fires on farm houses with roof integrated PV installations, we got aware that, after a fire, a
serious amount of silicon particles will be spread other a wide area in the direction of the wind. We investigated the
process and analyzed all the particles and their impact on the farmers land. We investigated several aspects of this
process and how he has to be treated to avoid problems for the farmer and his animals.
Uncertainty Analysis in the Power Rating Measurement of Solar Cell as per IEC 61853-1
Creators: name: Singh, R.
name: Bora, B.
name: Sastry, O.S.
name: Rai, S.
name: Bangar, M.
name: Dahiya, R.
name: Siddiqui, R.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
PV Cells and Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1720-1723
description: An estimation of source of uncertainty in the measurements of power matrix values using indoor test
conditions as per IEC 61853-1 is performed. During the experiment it is found that the spectrum of light source is
changing with irradiation. In this paper an uncertainty analysis of the measurements have been carried while
estimating the power output for 23 test conditions as per the standard. During this study it is observed that the power
temperature coefficient, MMF of solar cell does not remain constant and is dependent on irradiation level. Therefore
use of one power temperature coefficient (@ STC) for all irradiation levels mentioned in the standard leads to
significant error in the energy estimations. It needs to be estimated MMF for each irradiance level for different PV
technologies for indoor testing also. The estimation of power by using translation method as per IEC 60891 also leads
to increase in uncertainty.
Evaluation of Coating Solutions Against Stress Corrosion Cracking in Al Alloys - February 2022 Updates
Creators: name: Castelluccio, Gustavo
Publisher: name: Cranfield Online Research Data (CORD)
Year: 2023
Subjects: classificationCode: 401799
subject: Mechanical engineering not elsewhere classified

description: This report presents the progress in February 2022 in the program to understand stress corrosion cracking in Al components from trains
Inelastic nuclear screening for different secondaries produced in p+Pb collisions at LHC energy
Creators: name: Arakelyan, G. H.
name: Merino, C.
name: Shabelski, Yu. M.
name: Shuvaev, A. G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We calculate the inclusive spectra of secondaries produced in soft (minimum bias) p+Pb collisions in the framework of Quark-Gluon String Model at LHC energy, by taking into account the inelastic screening corrections (percolation effects). The role of these effects is expected to be very large at the very high energies, and they should decrease the spectra more than 2 times in the midrapidity region at sqrt(s)_(NN) = 5 TeV. The experimental data confirm such a picture, which means that the nuclear screening effects are connected with the Pomeron interaction rather than with the interactions of the produced secondary particles in the final state.
description: 11 pages, 2 figures, and 2 tables. arXiv admin note: substantial text overlap with arXiv:1207.6900
The accuracy of telling time via oscillatory signals
Creators: name: Monti, Michele
name: Wolde, Pieter Rein ten
Publisher: name: arXiv
Year: 2016
Subjects: subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences

description: Circadian clocks are the central timekeepers of life, allowing cells to anticipate changes between day and night. Experiments in recent years have revealed that circadian clocks can be highly stable, raising the question how reliably they can be read out. Here, we combine mathematical modeling with information theory to address the question how accurately a cell can infer the time from an ensemble of protein oscillations, which are driven by a circadian clock. We show that the precision increases with the number of oscillations and their amplitude relative to their noise. Our analysis also reveals that their exists an optimal phase relation that minimizes the error in the estimate of time, which depends on the relative noise levels of the protein oscillations. Lastly, our work shows that cross-correlations in the noise of the protein oscillations can enhance the mutual information, which suggests that cross-regulatory interactions between the proteins that read out the clock can be beneficial for temporal information transmission.
Effects of the centrifugal force in stellar dynamo simulations
Creators: name: Navarrete, Felipe H.
name: Käpylä, Petri J.
name: Schleicher, Dominik R. G.
name: Banerjee, Robi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The centrifugal force is often omitted from simulations of stellar convection either for numerical reasons or because it is assumed to be weak compared to the gravitational force. However, it might be an important factor in rapidly rotating stars, such as solar analogs, due to its $Ω^2$ scaling, where $Ω$ is the rotation rate of the star. We study the effects of the centrifugal force in a set of 21 semi-global stellar dynamo simulations with varying rotation rates. Included in the set are three control runs aimed at distinguishing the effects of the centrifugal force from the nonlinear evolution of the solutions. We decomposed the magnetic field into spherical harmonics and studied the migration of azimuthal dynamo waves (ADWs), the energy of different large-scale magnetic modes, and differential rotation. In the regime with the lowest rotation rates, $Ω= 5-10Ω_\odot$, where $Ω_\odot$ is the rotation rate of the Sun, we see no marked changes in either the differential rotation or the magnetic field properties. For intermediate rotation, $Ω= 20-25Ω_\odot$, we identify an increase in the differential rotation as a function of centrifugal force. The axisymmetric magnetic energy tends to decrease with centrifugal force, while the non-axisymmetric one increases. The ADWs are also affected, especially in the propagation direction. In the most rapidly rotating set with $Ω=30Ω_\odot$, these changes are more pronounced, and in one case the propagation direction of the ADW changes from prograde to retrograde. The control runs suggest that the results are a consequence of the centrifugal force and not due to the details of the initial conditions or the history of the run. We find that the differential rotation and the ADWs only change as a function of the centrifugal force when rotation is rapid enough.
description: 8 pages, 7 figures, accepted for publication in A&A
Gaia
Creators: name: Cacciari, C.
name: Pancino, E.
name: Bellazzini, M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: A review of the Gaia mission and its science performance after one year of operations will be presented, and the contribution to reconstructing the history of the Milky Way will be outlined.
description: 6 pages, 4 figures. To appear in Astronomische Nachrichten, special issue "Reconstructing the Milky Way's History: Spectroscopic Surveys, Asteroseismology and Chemodynamical Models", Guest Editors C. Chiappini, J. Montalban, and M. Steffen, AN 2016 (in press)
Implementation of Aerial Thermography Inspection of PV Modules in the O&M Activities in Large PV Plants
Creators: name: Coello, J.
name: Gutierrez, P.
name: Velasco, A.
name: Cristobal, A.
name: Parra, V.
name: Rosa, M.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
Operation of PV Systems

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1730-1735
description: This paper identifies and analyses relevant issues involving the different stages of the aerial
thermography inspection in utility-scale plants: flight plan, flight operation, analysis of radiometric information and
the final ground level inspection. The document also proposes guidelines and considerations to have into account to
perform aerial thermography with high quality results. The proposed procedures allow detection of hot spots of high
and medium severity with inspection rates of 18 MW/day in tracker facilities and 27 MW/day in facilities with fixed
structure. Furthermore, the paper includes the comparative analysis detecting hot spots by ground level and aerial
thermography.
Single-cell RNA sequencing reveals the early cell fate transition during callus initiation in Arabidopsis
Creators: name: 殷瑞莲(YIN RUILIAN)
Publisher: name: CNGB
Year: 2023
Subjects: Raw sequence reads
Transcriptome or Gene expression
Multiisolate

description: In this study, we performed a time series single-cell transcriptome experiment on Arabidopsis root explants that were induced on CIM (callus induction medium) for 0 day (CIM0), 1 day (CIM1), and 4 days (CIM4), and constructed a detailed single-cell transcriptional map of callus induction process. Based on this atlas, we successfully identified a cell type that responsible for the initiation of early callus: lateral root primordia-initiating like (LRPI-like) cells, and inferred their developmental trajectory. Further analysis found that LRPI-like cells is composed of cell subtypes at multiple developmental states which exhibited distinct pluripotency features, which revealed a cell lineage map of callus initiation. In addition, the transcription factor regulatory network analysis for LRPI-like cells revealed a number of transcription factors and their target genes involved in regulating the development of LRPI-like cells, such as LRP1. Collectively, the construction of cell lineage map of callus initiation gives unique glimpse of cell fate transition during callus formation, and these will further facilitate the identification of crucial regulators that promote callus formation.
The regulatory role of oxygen on corticotropin-releasing hormone secretion and vasoreactivity from the human perfused placenta in vitro
Creators: name: Donoghue, Jacqueline F. .
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Double roots of random polynomials with integer coefficients
Creators: name: Feldheim, Ohad N.
name: Sen, Arnab
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 34F05

description: We consider random polynomials whose coefficients are independent and identically distributed on the integers. We prove that if the coefficient distribution has bounded support and its probability to take any particular value is at most $\tfrac12$, then the probability of the polynomial to have a double root is dominated by the probability that either $0$, $1$, or $-1$ is a double root up to an error of $o(n^{-2})$. We also show that if the support of coefficient distribution excludes $0$ then the double root probability is $O(n^{-2})$. Our result generalizes a similar result of Peled, Sen and Zeitouni for Littlewood polynomials.
description: 20 pages + 1 page references, no figures
Data Mining Methods for Failure Classification on PV-Modules Monitored under Field-Conditions
Creators: name: Behrens, G.
name: Dercho, A.
name: Quakernack, H.
name: Wächter, T.
name: Hempelmann, S.
name: Kruse, I.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
Operation of PV Systems

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1746-1749
description: The focus of this work is to demonstrate the advantage of collecting modul based PV-power system
monitoring data with modern communication technology and the intelligent data analysis algorithms of computer
science. Prediction and recognition of different faults in large PV-arrays are very important for the effective operation
of PV-plants. Different PV-Systems are monitored with a large amount of data collected. The monitoring data is
combined with weather data from free internet sources. The challenge in this work is using intelligent data analysis
methods of data mining technology for a fault detection of different failure types in real PV-plants. The focus is on
using neural network classifier for failure types of partial shading, defect bypass diodes, hailstorm damage and
mechanical damage.
title: The Negotiation of Future Actions and Interpersonal Relations. Resisting and Insisting through Deontic, Epistemic and Affective Stances
Creators: name: Reichl, Isabella
Publisher: name: University of Kent
Year: 2022

description: This thesis examines how participants in future-action negotiations simultaneously insist on or resist future courses of action, on the one hand, and interpersonal claims, on the other. For this qualitative study, data was extracted from two pre-existing corpora of naturally-occurring conversations. Drawing on previous research on (parts of) future-action negotiations from two distinct research traditions - Speech-Act- theoretical Pragmatics and Conversation Analysis - this thesis takes an interactional approach and is positioned within the field of Interpersonal Pragmatics. It was demonstrated that deontics, epistemics and affect represents an effective triadic model of analysis for future-action negotiations in terms of two aspects: the actual negotiation of future courses of actions, on the one hand, and participants' interpersonal relations. This constitutes a more comprehensive alternative to the traditional way of examining proffers and refusals within Speech-Act-Theory-based im/politeness research and integrates Conversation-analytical research on individual interpersonal facets into an approach which views participants' deontic, epistemic and affective rights and obligations as key resources for the negotiation of face and interpersonal relations. The analysis shows that a distinction can be made between primary stances and secondary stances depending on whether the claimed (lack of) power, knowledge or affect conveys an argument for/against the future action or not. Despite a close link between the verbal actions being investigated and the deontic facet, it was demonstrated that participants also negotiate future actions and who they are to one another by orienting to epistemic and affective rights and obligations. Stances can be accepted or challenges with regard to the distribution of rights and obligations they convey. Nevertheless, this does not automatically mean that an utterance is treated as interpersonally unproblematic or problematic, respectively. In addition to how participants orient to a prior speaker's stances, the overall dis/preferred turn design, the individual stances within the turn and the specific formats used to implement them are important resources for relational work. Overall, there are three possible grounds for treating an utterance as interpersonally problematic: the stance it expresses, the verbal action it implements and/or the future action it puts forward.
Hiding in the Shadows II: Collisional Dust as Exoplanet Markers
Creators: name: Dobinson, Jack
name: Leinhardt, Zoe M.
name: Lines, Stefan
name: Carter, Philip J.
name: Dodson-Robinson, Sarah E.
name: Teanby, Nick A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Observations of the youngest planets ($\sim$1-10 Myr for a transitional disk) will increase the accuracy of our planet formation models. Unfortunately, observations of such planets are challenging and time-consuming to undertake even in ideal circumstances. Therefore, we propose the determination of a set of markers that can pre-select promising exoplanet-hosting candidate disks. To this end, N-body simulations were conducted to investigate the effect of an embedded Jupiter mass planet on the dynamics of the surrounding planetesimal disk and the resulting creation of second generation collisional dust. We use a new collision model that allows fragmentation and erosion of planetesimals, and dust-sized fragments are simulated in a post process step including non-gravitational forces due to stellar radiation and a gaseous protoplanetary disk. Synthetic images from our numerical simulations show a bright double ring at 850 $μ$m for a low eccentricity planet, whereas a high eccentricity planet would produce a characteristic inner ring with asymmetries in the disk. In the presence of first generation primordial dust these markers would be difficult to detect far from the orbit of the embedded planet, but would be detectable inside a gap of planetary origin in a transitional disk.
description: Accepted for publication in ApJ
Characterisation of n-Type Bifacial Silicon PV Modules
Creators: name: Lopez-Garcia, J.
name: Haile, B.
name: Pavanello, D.
name: Pozza, A.
name: Sample, T.
Publisher: name: WIP
Year: 2016
Subjects: Operation, Performance, Reliability and Sustainability of Photovoltaics
PV Cells and Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 1724-1729
description: Bifacial PV modules have shown the potential to increase the performance of traditional photovoltaic module
architectures using relatively conventional silicon manufacturing techniques. Bifacial modules can produce additional energy from
the rear surface of the module, collecting not only light incident on the front surface but also sunlight scattered or reflected from the
ground or environment onto the rear surface. To assess their performance and quality, PV modules are characterized using
international standards to rate the modules in terms of output power and efficiency. However, at present, no specific standards exist
for bifacial modules. Furthermore, these modules are often characterized by a high efficiency and an increased capacitance and the
measurement with standard pulsed solar simulators may be affected by strong measurement artefacts resulting in increased or
reduced maximum power. This work presents the indoor characterisation of bifacial c-Si PV modules under varying irradiance
levels using different methods such as a single-sweep flash simulator, the so-called multi-flash (MF) method and a steady state sun
simulator for the accurate measurement of the module parameters. The effect of different rear surface coverings, from matt black
painted wood to gloss white card and the differences among the characterisation method are also investigated.