cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Klinischer Verlauf und Analyse des Rezidivmusters von 111 Patienten mit anaplastischem Astrozytom oder Glioblastoma multiforme nach Operation und lokaler Strahlentherapie
Creators: name: Graubner, Sebastian
Publisher: name: Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité
Year: 2005
Subjects: subject: Glioblastoma multiforme
subject: Anaplastische Astrozytome
subject: maligne Gliome
subject: Rezidivanalyse
subject: anaplastic astrocytoma
subject: glioblastoma multiforme
subject: malignant glioma
subject: recurrence analysis
subject: 610 Medizin
subject: 33 Medizin
subject: XH 8554
subject: XH 8578
subject: YR 3128

description: Die vorliegende Arbeit ist eine retrospektive Kohortenstudie, welche alle Patienten einschloß, die im Zeitraum von 07/1988 bis 06/1997 aufgrund eines anaplastischen Astrozytoms oder eines Glioblastoma multiforme im damaligen Rudolf-Virchow-Klinikum in Berlin eine Strahlentherapie des Kopfes erhielten. Von den 111 Patienten erlitten im Beobachtungszeitraum 85 ein radiologisches Rezidiv. Die mediane Überlebenszeit betrug 9 Monate. 69 der Rezidive waren Zentralrezidive, 7 Randrezidive und 9 Fernrezidive. Auch die Rand- und Fernrezidive rezidivierten zusätzlich am Ort der Primärläsion. Es konnte gezeigt werden dass ein Sicherheitsabstand von 2-3 cm ausreicht um 90% der Rezidive vollständig zu erfassen und dass die lokale Kontrolle weiterhin das Hauptproblem bei der Behandlung dieser malignen Gliome ist.
description: This retrospective study reviews the data of 111 patients treated from 07/1988 to 06/1997 at the Rudolf-Virchow-Klinikum in Berlin. Both patients with anaplastic astrocytoma and glioblastoma multiforme were included. 85 patients showed radiological recurrence of tumour. Median survival was 9 months. 69 recurrences were central, 7 near and 9 distant recurrences. Near and distant recurrences were always multifocal, i. e. they recurred also at central locations. It was shown that a safety margin of 2-3 cm is sufficient to completely cover 90% of recurrent tumour. Local failure is still the primary difficulty in treating these malignant glioma.
title: Remote-gestütztes Programmieren, Debuggen und Testen eines autonomen Modellfahrzeugs
Creators: name: Czekansky, Jakob
name: Haefke, Clemens
name: Schauer, Moritz
name: Bienhaus, Diethelm
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2022
Subjects: subject: Mikrocontroller
subject: Debugging
subject: Fernzugriff
subject: Online-Lehre
subject: Virtuelles Labor

description: Für verschiedene praktische Lehrmodule im Kontext der Technischen Informatik und der Ingenieurwissenschaften ist das Programmieren, Debuggen und Testen von Mikrocontrollersystemen unersetzlich. In Zeiten von Online-Lehre und Distanz-Unterricht ist der Zugang zu hardwareseitigen Laboraufbauten aber nicht immer gegeben. Folgend wird ein System präsentiert, welches beispielhaft den Fernzugriff auf ARM Cortex-basierte Versuchsaufbauten ermöglicht. Realisiert wird dies mit einem webbasierten Interface, welches direkt an die einzelnen Testsysteme gekoppelt ist und visuelles Feedback für die Studierenden ermöglicht.
title: Trends of Augmented Reality to Support Cooperation of Learning Locations in Work-Integrated Study Programs
Creators: name: Adamy, Kevin
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2022
Subjects: subject: AR
subject: Augmented Reality Learning
subject: Cooperation of Learning Locations
subject: Delphi Study
subject: Education
subject: Technology-Enhanced Learning
subject: Work-Integrated Study

description: In work-integrated study programs, university, partner universities and partner companies are often all involved in curriculum development in one way or another. Cooperation of learning locations has a great potential to increase students’ learning success. Considering the development and various potentials of AR as learning technology along the virtuality continuum in a first step, a Delphi study is being carried out with relevant experts. These experts were selected based on the number of years of work experience in the research areas of ‘AR’ and ‘Learning Technology’, in industry or at a university. As a result, we expect research hypotheses in the areas of learning approach, research collaboration and technological aspects being validated.
Proteasomal inhibition preferentially stimulates lysosome activity relative to autophagic flux in primary astrocytes
Creators: name: Yuan, Ruiyi
name: Hahn, Younghee
name: Stempel, Max H.
name: Sidibe, David K.
name: Laxton, Olivia
name: Chen, Jessica
name: Kulkarni, Aditi
name: Maday, Sandra
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Neurons and astrocytes face unique demands on their proteome to enable proper function and survival of the nervous system. Consequently, both cell types are critically dependent on robust quality control pathways such as macroautophagy (hereafter referred to as autophagy) and the ubiquitin-proteasome system (UPS). We previously reported that autophagy is differentially regulated in astrocytes and neurons in the context of metabolic stress, but less is understood in the context of proteotoxic stress induced by inhibition of the UPS. Dysfunction of the proteasome or autophagy has been linked to the progression of various neurodegenerative diseases. Therefore, in this study, we explored the connection between autophagy and the proteasome in primary astrocytes and neurons. Prior studies largely in non-neural models report a compensatory relationship whereby inhibition of the UPS stimulates autophagy. To our surprise, inhibition of the proteasome did not robustly upregulate autophagy in astrocytes or neurons. In fact, the effects on autophagy are modest particularly in comparison to paradigms of metabolic stress. Rather, we find that UPS inhibition in astrocytes induces formation of Ub-positive aggregates that harbor the selective autophagy receptor, SQSTM1/p62, but these structures were not productive substrates for autophagy. By contrast, we observed a significant increase in lysosomal degradation in astrocytes in response to UPS inhibition, but this stimulation was not sufficient to reduce total SQSTM1 levels. Last, UPS inhibition was more toxic in neurons compared to astrocytes, suggesting a cell type-specific vulnerability to proteotoxic stress.Abbreviations: Baf A1: bafilomycin A1; CQ: chloroquine; Epox: epoxomicin; MAP1LC3/LC3: microtubule-associated protein 1 light chain 3; MTOR: mechanistic target of rapamycin kinase; p-ULK1: phospho-ULK1; SQSTM1/p62: sequestosome 1; Ub: ubiquitin; ULK1: unc-51 like kinase 1; UPS: ubiquitin-proteasome system
Micro-Credentials und Micro-Degrees. Aktuelle Entwicklungen und Perspektiven aus der Praxis des KI-Campus
Creators: name: Flasdick, Julia
name: Mah, Dana-Kristin
name: Bernd, Mike
name: Rampelt, Florian
Publisher: name: Zenodo
Year: 2022
Subjects: KI
Künstliche Intelligenz
AI
Artificial Intelligence
Digitale Bildung
Lernangebote
Lernplattform
OER
Open Educational Resources
AI Campus
Online Kurs
Ed Tech

description: Micro-Credentials und Micro-Degrees werden in Bildungspolitik und -praxis zunehmend als flexible und innovative Qualifizierungsform diskutiert. Das Diskussionspapier skizziert den Status Quo nationaler, europäischer und internationaler Aktivitäten zu Micro-Credentials und Micro-Degrees auf digitalen Lernplattformen, im hochschulischen wie beruflichen Bildungsbereich. Am Anwendungsfall KI-Campus – Die Lernplattform für Künstliche Intelligenz werden aktuelle Entwicklungen und Perspektiven aus der Praxis präsentiert. Zentral sind dabei die Vorstellung einer Arbeitsdefinition zu Micro-Credentials und Micro-Degrees unter Berücksichtigung des gegenwärtigen wissenschaftlichen Diskurses sowie die Darstellung von zwei geplanten Micro-Degree-Programmen des KI-Campus. Abschließend erfolgt ein Ausblick auf die angestrebten Vorhaben des KI-Campus, mit welchen Mico-Degrees vorangetrieben und mitgestaltet werden sollen. Dabei liegt der Fokus auf der deutschen Hochschullandschaft. Der KI-Campus ist ein vom Bundesministerium für Bildung und Forschung (BMBF) gefördertes F&E-Projekt. Der KI-Campus ist seit Juli 2020 als Beta-Version öffentlich verfügbar und wird kontinuierlich weiterentwickelt: www.ki-campus.org
Crystallization of Silicon Layers with a Scanned Electron Beam
Creators: name: Heinß, J.-P.
name: Morgner, H.
name: Häfner, K.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Thin Films Solar Cells
Amorphous and Microcrystalline Silicon Solar Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2800-2803
description: We realised two steps for a high productive processing of silicon thin film layers. Firstly we deposited
amorphous silicon onto glass and stainless steel substrates with stationary rates up to 70 nm/s. The layer thickness
could be extended up to 30 μm. In second step we realized a crystallization of the silicon layer with an oscillating
beam from an axial type electron beam gun. According to the energy absorption profile the crystallites were
generated in the silicon layers. Their size was a few of micrometers and could be extended over the whole layer
thickness. In case of steel substrates the existence of crystallites was connected with alloying of iron and silicon.
Asymptotic behaviour of coupled systems in discrete and continuous time
Creators: name: Paunonen, L.
name: Seifert, D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Functional Analysis (math.FA)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: This paper investigates the asymptotic behaviour of solutions to certain infinite systems of coupled recurrence relations. In particular, we obtain a characterisation of those initial values which lead to a convergent solution, and for initial values satisfying a slightly stronger condition we obtain an optimal estimate on the rate of convergence. By establishing a connection with a related problem in continuous time, we are able to use this optimal estimate to improve the rate of convergence in the continuous setting obtained by the authors in a previous paper. We illustrate the power of the general approach by using it to study several concrete examples, both in continuous and in discrete time.
description: To appear in J. Dyn. Differ. Equ
Proof complexity of intuitionistic implicational formulas
Creators: name: Jeřábek, Emil
Publisher: name: arXiv
Year: 2015
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Logic (math.LO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 03F20 (Primary), 03B55 (Secondary)

description: We study implicational formulas in the context of proof complexity of intuitionistic propositional logic (IPC). On the one hand, we give an efficient transformation of tautologies to implicational tautologies that preserves the lengths of intuitionistic extended Frege (EF) or substitution Frege (SF) proofs up to a polynomial. On the other hand, EF proofs in the implicational fragment of IPC polynomially simulate full intuitionistic logic for implicational tautologies. The results also apply to other fragments of other superintuitionistic logics under certain conditions. In particular, the exponential lower bounds on the length of intuitionistic EF proofs by Hrubeš \cite{hru:lbint}, generalized to exponential separation between EF and SF systems in superintuitionistic logics of unbounded branching by Jeřábek \cite{ej:sfef}, can be realized by implicational tautologies.
description: 47 pages, 1 figure; to appear in Annals of Pure and Applied Logic
Entropy and disorder enable charge separation in organic solar cells
Creators: name: Hood, Samantha N.
name: Kassal, Ivan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Although organic heterojunctions can separate charges with near-unity efficiency and on a sub-picosecond timescale, the full details of the charge-separation process remain unclear. In typical models, the Coulomb binding between the electron and the hole can exceed the thermal energy $k_\mathrm{B}T$ by an order of magnitude, suggesting that it is impossible for the charges to separate before recombining. Here, we consider the entropic contribution to charge separation in the presence of disorder and find that even modest amounts of disorder have a decisive effect, reducing the charge-separation barrier to about $k_\mathrm{B}T$ or eliminating it altogether. Therefore, the charges are usually not thermodynamically bound at all and could separate spontaneously if the kinetics otherwise allowed it. Our conclusion holds despite the worst-case assumption of localised, thermalised carriers, and is only strengthened if mechanisms like delocalisation or `hot' states are also present.
Effect of hyperons on phase coexistence in strange matter
Creators: name: Das, P.
name: Mallik, S.
name: Chaudhuri, G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The study of liquid gas phase transition in fragmentation of nuclei in heavy ion collisions has been extended to the strangeness sector using the statistical model for multifragmentation. Helmholtz's free energy, specific heat and few other thermodynamic observables have been analyzed in order to examine the occurence of phase transition in the strange matter. The bimodal behaviour of the largest cluster formed in fragmentation also strongly indicates coexistence of both the phases. The presence of hyperons strengthens the signals and also shifts the transition temperature to lower values.
description: 5 Pages, 7 Figures
Resilience to time-correlated noise in quantum computation
Creators: name: Bombin, H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Fault-tolerant quantum computation techniques rely on weakly correlated noise. Here I show that it is enough to assume weak spatial correlations: time correlations can take any form. In particular, single-shot error correction techniques exhibit a noise threshold for quantum memories under spatially local stochastic noise.
description: 16 pages, v3: as accepted in journal
Note on four-particle form factors of operators $T_{2n}T_{-2n}$ in sinh-Gordon model
Creators: name: Lashkevich, Michael
name: Pugai, Yaroslav
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: The diagonal matrix elements $\langleθ_1,θ_2|T_{2n}T_{-2n}|θ_1,θ_2\rangle$ between two-particle states in the sinh-Gordon model are computed analytically for all integers $n>0$. This confirms the proposal by F. Smirnov and A. Zamolodchikov for these matrix elements and demonstrates effectiveness of the algebraic approach to form factors.
description: 7 pages; v2: a reference added; v3: minor stylistic corrections, two references added
Superconducting pairing in resonant inelastic X-ray scattering
Creators: name: Shi, Yifei
name: Benjamin, David
name: Demler, Eugene
name: Klich, Israel
Publisher: name: arXiv
Year: 2015
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We develop a method to study the effect of the superconducting transition on resonant inelastic X-ray scattering (RIXS) signal in superconductors with an order parameter with an arbitrary symmetry within a quasiparticle approach. As an example, we compare the direct RIXS signal below and above the superconducting transition for p-wave type order parameters. For a p-wave order parameter with a nodal line, we show that, counterintuitively, the effect of the gap is most noticeable for momentum transfers in the nodal direction. This phenomenon may be naturally explained as a type of nesting effect.
La puesta en duda del zoon politikon: el debate sobre el maquiavelismo en Espania (Rivadeneyra, Saavedra Fajardo, Calderon)
Creators: name: Matzat, Wolfgang
Publisher: name: Universität Tübingen
Year: 2015
Subjects: subject: Literaturwissenschaft
subject: 860

description: Zweitveröffentlichung
Contact Formation in the Silver/Aluminum Thick Film Firing Process – A Phenomenological Approach
Creators: name: Riegel, S.
name: Mutter, F.
name: Hahn, G.
name: Terheiden, B.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2353-2356
description: In this paper the silver/aluminum thick film process is investigated. Aim of the work is a better
understanding of the contact formation and the function aluminum fulfils. Depending on the local composition of the
paste, that is the ratio of aluminum, silver and lead, different contact structures are found. These observations lead to
a model explaining the contact formation for the silver/aluminum thick film process based on the model of the silver
thick film process [2].
ALMA Survey of Lupus Protoplanetary Disks I: Dust and Gas Masses
Creators: name: Ansdell, Megan
name: Williams, Jonathan P.
name: van der Marel, Nienke
name: Carpenter, John M.
name: Guidi, Greta
name: Hogerheijde, Michiel
name: Mathews, Geoff S.
name: Manara, Carlo F.
name: Miotello, Anna
name: Natta, Antonella
name: Oliveira, Isa
name: Tazzari, Marco
name: Testi, Leonardo
name: van Dishoeck, Ewine F.
name: van Terwisga, Sierk E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present the first high-resolution sub-mm survey of both dust and gas for a large population of protoplanetary disks. Characterizing fundamental properties of protoplanetary disks on a statistical level is critical to understanding how disks evolve into the diverse exoplanet population. We use ALMA to survey 89 protoplanetary disks around stars with $M_{\ast}>0.1~M_{\odot}$ in the young (1--3~Myr), nearby (150--200~pc) Lupus complex. Our observations cover the 890~$μ$m continuum and the $^{13}$CO and C$^{18}$O 3--2 lines. We use the sub-mm continuum to constrain $M_{\rm dust}$ to a few Martian masses (0.2--0.4~$M_{\oplus}$) and the CO isotopologue lines to constrain $M_{\rm gas}$ to roughly a Jupiter mass (assuming ISM-like $\rm {[CO]/[H_2]}$ abundance). Of 89 sources, we detect 62 in continuum, 36 in $^{13}$CO, and 11 in C$^{18}$O at $>3σ$ significance. Stacking individually undetected sources limits their average dust mass to $\lesssim6$ Lunar masses (0.03~$M_{\oplus}$), indicating rapid evolution once disk clearing begins. We find a positive correlation between $M_{\rm dust}$ and $M_{\ast}$, and present the first evidence for a positive correlation between $M_{\rm gas}$ and $M_{\ast}$, which may explain the dependence of giant planet frequency on host star mass. The mean dust mass in Lupus is 3$\times$ higher than in Upper Sco, while the dust mass distributions in Lupus and Taurus are statistically indistinguishable. Most detected disks have $M_{\rm gas}\lesssim1~M_{\rm Jup}$ and gas-to-dust ratios $<100$, assuming ISM-like $\rm {[CO]/[H_2]}$ abundance; unless CO is very depleted, the inferred gas depletion indicates that planet formation is well underway by a few Myr and may explain the unexpected prevalence of super-Earths in the exoplanet population.
description: Accepted to ApJ (13 pages, 9 figures + appendix); The full machine readable tables are available under "Ancillary files" or can be obtained by downloading and extracting the gzipped tar source file listed under "Other formats."
The DELFIN Concept – A Screen Printed Solar Cell with >18.5% Efficiency
Creators: name: Lossen, J.
name: Jesswein, R.
name: Weiß, M.
name: Wütherich, T.
name: Dupke, M.
name: Katkhouda, K.
name: Meyer, K.
name: Böscke, T.
name: Froitzheim, A.
name: Eschrich, H.
name: Krokoszinski, H.-J.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2333-2337
description: This article describes the components of DELFIN, a highly manufacturable solar cell concept with substantially
increased efficiency. We give details on the advantages of selective emitters produced by the structured diffusion
source (SDS) process. The deep field emitter profile leads to a very low emitter saturation current of
80 fA/cm², allowing for an open circuit voltage higher than 640 mV. A further advantage of the process sequence is
its inherent tolerance to misalignment of the metallization pattern. Furthermore, the back surface field and the grid
metallization were improved. Fine line screen printing and light induced silver plating are used to lower the resistance
losses while reducing the shading simultaneously. The different measures complement each other well: It is
shown that the efficiency could be increased by almost 1% absolute on average. The best cell has an efficiency of
18.9%, independently confirmed by Fraunhofer ISE CalLab.
Options for PV Field Grounding
Creators: name: Laschinski, J.
name: Coors, S.
name: Häring, A.
name: Viotto, M.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
Balance of System Components

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3764-3765
description: It is possible to operate grounded PV fields without reduction of its energetic yield. Up to now
grounding of PV fields reduces its energetic yield. Necessary voltage shifting produces power losses and even
transformerless topologies cannot reach their maximum efficiency. While using the medium-voltage transformer for
galvanic separation it becomes possible to operate soft grounded PV fields by keeping the usual safety standard. For
this it is necessary to deviate from standard installations and standard equipment.
A Study of deuteron electromagnetic form factors with light-front approach
Creators: name: Sun, Bao-dong
name: Dong, Yu-bing
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The electromagnetic form factors and low-energy observables of deuteron are studied with the help of the light-front approach, where the deuteron is regarded as a weekly bound state of a proton and a neutron. Both the $S-$ and $D-$wave interacting vertexes among deuteron, proton, and neutron are taken into account. Moreover, the regularization functions are also introduced. In our calculations, the vertex and the regularization functions are employed to simulate the momentum distribution inside the deuteron. Our numerical results show that the light-front approach can roughly reproduce the deuteron electromagnetic form factors, like charge $G_0$, magnetic $G_1$, and quadrupole $G_2$, in the low $Q^2$ region. The important role of the $D-$wave vertex on $G_2$ is also addressed.
Light-Trapping Effect in a-Si:H / mc-Si:H Tandem Solar Cells by Using High Haze SnO2:F Thin Films
Creators: name: Kambe, M.
name: Taneda, N.
name: Masumo, K.
name: Higashi, S.
name: Takahashi, A.
name: Nishida, W.
name: Ikeda, T.
name: Oyama, T.
name: Sato, K.
name: Matsui, T.
name: Sai, H.
name: Kondo, M.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Thin Films Solar Cells
Amorphous and Microcrystalline Silicon Solar Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2290-2292
description: In this paper we report on the fabrication of amorphous silicon (a-Si:H) / microcrystalline silicon (μc-
Si:H) p-i-n tandem solar cells on high haze fluorine-doped tin oxide (SnO2:F) transparent conductive oxide (TCO)
thin films, type-HU. The HU-TCO has double textured morphology on its surface and shows high haze value through
the whole optical region where the tandem solar cells are sensitive. We demonstrate here that light-trapping effect is
improved by using HU-TCO. a-Si:H / μc-Si:H tandem solar cells were fabricated on pyramidal textured TCO and
HU-TCO. Thickness of bottom μc-Si:H layer was varied to obtain balanced current between top and bottom cells
fabricated on the two kinds of TCOs. It was found that HU-TCO can allow us to reduce thickness of bottom i-layer
by 30 %.
On Unification of Gravity and Gauge Interactions
Creators: name: Chamseddine, Ali H.
name: Mukhanov, Viatcheslav
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Considering a higher dimensional Lorentz group as the tangent symmetry, we unify gravity and gauge interactions in a natural way. The spin connection of the gauged Lorentz group is then responsible for both gravity and gauge fields, and the action for the gauged fields becomes part of the spin curvature squared. The realistic group which unifies all known particles and interactions is the $SO(1,13)$ Lorentz group whose gauge part leads to $SO(10)$ grand unified theory and contains double the number of required fermions in the fundamental spinor representation. Mirror fermions could acquire mass utilizing a mechanism employed for topological superconductors. Family unification could be achieved by considering the $SO(1,21)$ Lorentz group.
description: 17 pages. Mirror fermions now acquire masses utilizing a mechanism employed for topological superconductors
Adaptive Sweep for PV Applications
Creators: name: Kjær, S.B.
name: Oprea, O.
name: Borup, U.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
Balance of System Components

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3708-3710
description: PV systems are nowadays being installed in sub-optimal locations due to the fact that the price for such
systems is steadily decreasing. Today, one will therefore find systems installed in east / west direction and even where
shadows are present. The power-characteristic of a PV module is non-linear, and shadows cause the characteristic to have
more local maximum power points, whereas only one of them is the true global maximum power point. The maximum
power point tracker applied in the inverter therefore has to incorporate a search algorithm which now-and-then sweeps a
part of, or the entire, characteristic in order to locate the global maximum power point.
This paper presents a novel algorithm for adjusting the interval between the sweeps in order to increase the total
output energy and to increase the lifetime of the inverter. The algorithm is described and verified by measurements.
Five Roads towards Increased Optical Absorption and High Stable Efficiency for Thin Film Silicon Solar Cells
Creators: name: Vanecek, M.
name: Poruba, A.
name: Remes, Z.
name: Holovsky, J.
name: Purkrt, A.
name: Babchenko, O.
name: Hruska, K.
name: Meier, J.
name: Kroll, U.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Thin Films Solar Cells
Amorphous and Microcrystalline Silicon Solar Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2286-2289
description: Increased optical absorption and full stability of thin film silicon solar cells, together with industrial
requirements for short deposition time and simple process are the main goals of all thin film silicon solar cell developments.
Stable panel efficiency should reach levels above 10%. Here we present briefly 5 ways how to increase optical absorption in
thin film Si and suggest how to diminish the limitations due to Staebler-Wronski effect in amorphous Si. Then we in details
describe the new 3-dimmensional design of amorphous silicon, microcrystalline silicon and micromorph tandem cells which
represent the concept of “electrically thin” and “optically thick” solar cells. Details of experimental realization of specially
nanostructured TCO superstrates are shown and the results of optical modeling and the first results on amorphous Si
deposition over such superstrate are presented.
title: Escola de Pilotagem de Macau
Creators: name: de Almeida Barata, João
Publisher: name: CHAM, Faculdade de Ciências Sociais e Humanas, Universidade Nova de Lisboa
Year: 2022

description: Entrada histórica sobre a instituição Escola de Pilotagem de Macau, Macau, na plataforma eViterbo
description: Almeida Barata, João de .2022. Escola de Pilotagem de Macau in eViterbo. CHAM, Faculdade de Ciências Sociais e Humanas, Universidade Nova de Lisboa. eISBN: 978-989-8492-77-7
$η$ and $η'$ decays into lepton pairs
Creators: name: Masjuan, Pere
name: Sanchez-Puertas, Pablo
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this work, we calculate the branching ratios for the $η(η')\rightarrow\bar{\ell}\ell$ decays, where $\ell = e,μ$. These processes have tiny rates in the standard model due to spin flip, loop, and electromagnetic suppression, for what they could be sensitive to New Physics effects. In order to provide a reliable input for the Standard Model, we exploit the general analytical properties of the amplitude. For that purpose, we invoke the machinery of Canterbury approximants, which provides a systematic description of the underlying hadronic physics in a data-driven fashion. Given the current experimental discrepancies, we discuss in detail the role of the resonant region and comment on the reliability of $χ$PT calculations. Finally, we discuss the kind of new physics which we think would be relevant to account for them.
description: 35 pages, 18 figures. V2 matches the published version
Презентація "Національної електронної науково-інформаційної системи "URIS"
Creators: name: Auhunas, Sabina
Publisher: name: Zenodo
Year: 2022

description: Національна електронна науково-інформаційна Система “URIS” – багатофункціональна інформаційно-телекомунікаційна система, що забезпечує збір, формування, обробку, зберігання, використання даних та інформації про сферу наукової і науково-технічної діяльності України, забезпечує реалізацію функцій її суб’єктів, інформаційну підтримку та супроводження їх діяльності.
Second Generation of CPV Modules at ISOFOTON: Cost Effective Solutions for PV Power Plants
Creators: name: López, J.
name: González, J.R.
name: Díaz, V.
name: Ropero, F.
Publisher: name: WIP
Year: 2011
Subjects: Advanced Photovoltaics : New Concepts and Ultra-High Efficiency
Terrestrial Concentrator Systems

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 707-709
description: ISOFOTON has taken advantage of the accumulated experience after some years of in-field deployment at ISFOC’s installation in Spain. As a result of this, a new generation of modules (GEN 2) more reliable and with a higher efficiency has been developed. This modules assembled a lower number of components are easier to assemble and present a lower cost than the previous one. In addition, ISOFOTON has developed a new tracker with a low manufacture and maintenance cost. With this new module and tracker ISOFOTON  has manufactured a robust system ready to be commercialized as a unique product in a great variety of environments and conditions.
Nonlinearly charged dilatonic black holes and their Brans-Dicke counterpart: Energy dependent spacetime
Creators: name: Hendi, S. H.
name: Talezadeh, M. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Regarding the wide applications of dilaton gravity in the presence of electrodynamics, we introduce a suitable Lagrangian for the coupling of dilaton with gauge field. There are various Lagrangians which show the coupling between scalar fields and electrodynamics with correct special situations. In this paper, taking into account conformal transformation of Brans-Dicke theory with an electrodynamics Lagrangian, we show that how scalar field should couple with electrodynamics in dilaton gravity. In other words, in order to introduce a correct Lagrangian of dilaton gravity, one should check at least two requirements: compatibility with Brans-Dicke theory and appropriate special situations. Finally, we apply the mentioned method to obtain analytical solutions of dilaton-Born-Infeld and Brans-Dicke-Born-Infeld theories with energy dependent spacetime.
description: 11 pages without figure, typos are fixed. Accepted in Gen. Relativ. Gravit
A HF-Free Chemistry Alternative for Multicrystalline Wafer Texturing
Creators: name: Barr, R.
name: O'Connor, C.
name: Moynihan, M.
name: Hinkley, P.
name: Ridler, T.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2304-2306
description: The texturing step for multicrystalline photovoltaics, which reduces reflectance and improves
efficiency of the cell, is a critical step in the ultimate performance of the cell. Current texturing technologies for
multicrystalline silicon requires the use of large quantities of concentrated and hazardous chemicals. The handling,
storage, use and disposal of these solutions requires extreme care and can be a significant expense depending on local
and regional treatment requirements. To texture multicrystalline wafers, the photovoltaic (PV) industry currently
uses concentrated hydrofluoric (HF) and nitric acid (an exothermic reaction) to a make a texturing bath1. The new
technology presented is this paper focuses on a more dilute proprietary alkaline chemistry that is much lower in cost
(material and waste treatment cost) and safer to handle. Unlike typical generic alkaline chemistries2, this chemistry
behaves more isotropically when exposed to the different crystal planes on a multicrystalline wafer. This proprietary
alkaline chemistry delivers equivalent reflectance as the HF/nitric process while significantly reducing the health,
safety, and environmental issues associated with the current technology.
title: PATRIMOINE CINÉMATOGRAPHIQUE DU THERMALISME : NAISSANCE D’UNE COLLECTION
Creators: name: De Pastre, Béatrice
name: Lefebvre, Thierry
Publisher: name: Société française de médecine thermale
Year: 2022

description: Les collections du Centre national du cinéma et de l’image animée (CNC), riches de plusieurs dizaines de milliers de films, recèlent de nombreuses ressources relatives au thermalisme et à son histoire : courts, moyens et longs métrages évoquant, d’une manière ou d’une autre, cette technique de soin.
A New Paradigm for Edge Reconstruction in Fractional Quantum Hall States
Creators: name: Sabo, Ron
name: Gurman, Itamar
name: Rosenblatt, Amir
name: Lafont, Fabien
name: Banitt, Daniel
name: Park, Jinhong
name: Heiblum, Moty
name: Gefen, Yuval
name: Umansky, Vladimir
name: Mahalu, Diana
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Questions on the nature of edge reconstruction and "where does the current flow" in the quantum Hall effect (QHE) have been debated for years. Moreover, the recent observation of proliferation of "upstream" neutral modes in the fractional QHE raised doubts about the present models of edge channels. In this article we focus on hole-conjugate states, nu=2/3 and nu=3/5, and present a new picture of their edge reconstruction. For example, while the present model for nu=2/3 consists of a single downstream charge channel with conductance 2/3 e^2/h and an upstream neutral mode, we show that the current is carried by two separate downstream edge channels, each with conductance 1/3 e^2/h, accompanied by upstream neutral mode(s). We find that if the two downstream channels are not equilibrated, inter-mode equilibration (via particle exchange) takes place over a distance of microns, with the two channels effectively behaving as a single channel. Moreover, the inter-channel equilibration is accompanied by an excitation of upstream neutral modes. In turn, the counter-propagating neutral modes, moving in close proximity to the charge modes, fragment into propagating charges, inducing thus downstream current fluctuations with zero net current - a novel mechanism for non-equilibrium noise. This unexpected edge reconstruction underlines the need for better understanding of edge reconstruction and energy transport in all fractional QHE states.
Evaluation of Different Wavelengths Fiber-Lasers for Isolation of the P-N Junction of Crystalline Silicon Solar-Cells
Creators: name: Otaegi, A.
name: Jimeno, J.C.
name: Salin, F.
name: Saby, J.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2329-2332
description: Preliminary work on edge isolations of crystalline solar cells, using a 10 nanosecond Q-switched fiber
laser working on the infrared and green spectrum. Acceptable values for shunt resistance are obtained by isolations
made by green laser ( = 515 nm) and infrared laser ( = 1030 nm), as long as fast velocities are used over a
threshold of peak energy. The damages introduced by the green and the infrared lasers are also analized and
compared, in terms of J02.
Chromatic classical symmetric functions
Creators: name: Cho, Soojin
name: van Willigenburg, Stephanie
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: Primary 05E05, Secondary 05C15, 05C25

description: In this note we classify when a skew Schur function is a positive linear combination of power sum symmetric functions. We then use this to determine precisely when any scalar multiple of a skew Schur function is the chromatic symmetric function of some graph. From here we are able to prove that of the classical bases for symmetric functions only certain scalar multiples of the elementary symmetric functions can be realised as the chromatic symmetric function of some graph, namely a particular union of complete graphs.
description: 8 pages, minor adjustments to match final version to appear in J. Comb
State of the Technique of the Maximum Power Point Tracking Algorithms Related in PV Grid-Connected Inverters
Creators: name: Salas, V.
name: Débora, P.J.
name: Olías Ruiz, E.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
Balance of System Components

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3711-3715
description: The aim of this article is to present a state of the technique of the maximum power point tracking
(MPPT) algorithms that are programmed in the grid-connected inverters. To do this a lot papers related to the topic
have been collected. From them, the different MPPT algorithms have been grouped and distinguished.
Energy Gains and Suitable Locations for Master-Slave Configuration of DC-AC Converters
Creators: name: Spertino, F.
name: Di Leo, P.
name: Corona, F.
Publisher: name: WIP
Year: 2011
Subjects: Components for PV Systems
Balance of System Components

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 3721-3725
description: Several feed-in tariffs are now available and thus the maximization of the productivity is very
important : this goal can be achieved by solar cell technologies with high efficiency and low temperature losses, one
axis or dual axis sun-tracking systems, proper cooling techniques for PV modules in building integrated applications,
master-slave control for the inverters in large grid connected PV plants, etc.. About the last item, this paper is
focused on the utilization of the master-slave concept vs. the centralised inverter layout. Here the attention is focused
on the influence of the installation site and the tilt angle of the PV modules, for sake of simplicity. The results of the
simulated energy production put into evidence energy gains in the range 0.5-5.4% with clear and cloudy days,
respectively. On the basis of these comparisons, the master-slave concept is more profitable if the ratio between
diffuse and global irradiation is greater than 50%, like in high latitude locations. Obviously, this energy gain must be
prevailing with respect to the major installation and maintenance costs of master-slave configuration vs. the single
centralised inverter.
From confined spinons to emergent fermions: Observation of elementary magnetic excitations in a transverse-field Ising chain
Creators: name: Wang, Zhe
name: Wu, Jianda
name: Xu, Shenglong
name: Yang, Wang
name: Wu, Congjun
name: Bera, Anup Kumar
name: Islam, A. T. M. Nazmul
name: Lake, Bella
name: Kamenskyi, Dmytro
name: Gogoi, Papori
name: Engelkamp, Hans
name: Wang, Nanlin
name: Deisenhofer, Joachim
name: Loidl, Alois
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on spectroscopy study of elementary magnetic excitations in an Ising-like antiferromagnetic chain compound SrCo$_2$V$_2$O$_8$ as a function of temperature and applied transverse magnetic field up to 25 T. An optical as well as an acoustic branch of confined spinons, the elementary excitations at zero field, are identified in the antiferromagnetic phase below the Néel temperature of 5 K and described by a one-dimensional Schrödinger equation. The confinement can be suppressed by an applied transverse field and a quantum disordered phase is induced at 7 T. In this disordered paramagnetic phase, we observe three emergent fermionic excitations with different transverse-field dependencies. The nature of these modes is clarified by studying spin dynamic structure factor of a 1D transverse-field Heisenberg-Ising (XXZ) model using the method of infinite time evolving block decimation. Our work reveals emergent quantum phenomena and provides a concrete system for testifying theoretical predications of one-dimension quantum spin models.
description: 8 pages and 6 figures
Quaternionic Wiener Algebras, Factorization and Applications
Creators: name: Shelah, Yonatan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30E25, 47S10 (Primary), 13J05, 15A09, 47B35, 47B39 (Secondary)

description: We define an almost periodic extension of the Wiener algebras in the quaternionic setting and prove a Wiener-Levy type theorem for it, as well as extending the theorem to the matrix-valued case. We prove a Wiener-Hopf factorization theorem for the quaternionic matrix-valued Wiener algebras (discrete and continuous) and explore the connection to the Riemann-Hilbert problem in that setting. As applications, we characterize solvability of two classes of quaternionic functional equations and give an explicit formula for the canonical factorization of quaternionic rational matrix functions via realization.
description: 34 pages, accepted for publication in AACA (Advances in Applied Clifford Algebras). The final publication will be available at Springer via http://dx.doi.org/10.1007/s00006-016-0750-2
Dynamics of Modified Chaplygin Gas Inflation on the Brane with Bulk Viscous Pressure
Creators: name: Jawad, Abdul
name: Ilyas, Amara
name: Rani, Shamaila
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the role of bulk viscous pressure on the warm inflationary modified Chaplygin gas in brane-world framework in the presence of standard scalar field. We assume the intermediate inflationary scenario in strong dissipative regime and constructed the inflaton, potential, entropy density, slow-roll parameters, scalar and tensor power spectra, scalar spectral index and tensor-to-scalar ratio. We develop various trajectories such as $n_s - N$, $n_s - r$ and $n_s - α_s$ (where $n_s$ is the spectral index, $α_s$ is the running of spectral index, $N$ is the number of e-folds and $r$ is tensor-to-scalar ratio) for variable as well as constant dissipation and bulk viscous coefficients at high dissipative regime. It is interesting to remark here that our results of these parameters are compatible with recent observational data such as WMAP $7+9$, BICEP$2$ and Planck data.
description: 21 pages, 8 figures
Job Selection in a Network of Autonomous UAVs for Delivery of Goods
Creators: name: Grippa, Pasquale
name: Behrens, Doris A.
name: Bettstetter, Christian
name: Wall, Friederike
Publisher: name: arXiv
Year: 2016
Subjects: subject: Multiagent Systems (cs.MA)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This article analyzes two classes of job selection policies that control how a network of autonomous aerial vehicles delivers goods from depots to customers. Customer requests (jobs) occur according to a spatio-temporal stochastic process not known by the system. If job selection uses a policy in which the first job (FJ) is served first, the system may collapse to instability by removing just one vehicle. Policies that serve the nearest job (NJ) first show such threshold behavior only in some settings and can be implemented in a distributed manner. The timing of job selection has significant impact on delivery time and stability for NJ while it has no impact for FJ. Based on these findings we introduce a methodological approach for decision-making support to set up and operate such a system, taking into account the trade-off between monetary cost and service quality. In particular, we compute a lower bound for the infrastructure expenditure required to achieve a certain expected delivery time. The approach includes three time horizons: long-term decisions on the number of depots to deploy in the service area, mid-term decisions on the number of vehicles to use, and short-term decisions on the policy to operate the vehicles.
Characteristics of SiH4/H2 Plasma Produced by Short Gap VHF Discharge
Creators: name: Yamauchi, Y.
name: Baba, T.
name: Takeuchi, Y.
name: Takatsuka, H.
name: Muta, H.
name: Uchino, K.
name: Kawai, Y.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Thin Films Solar Cells
Amorphous and Microcrystalline Silicon Solar Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2333-2336
description: The plasma parameters of SiH4/H2 plasma were examined as a function of pressure and power, where the
frequency of the power source was 60 MHz. It was found that the ion saturation current takes a peak at a certain power as
well as pressure.