cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Synthesis of High Quality Zn/Ni/Cu-Oxide Nanocrystals for Solar Cell Applications
Creators: name: Khagram, P.
name: Tomson, F.F.
name: Friedman, C.E.
name: Brydson, R.M.D.
name: Crook, R.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
New Materials, Cells and Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 678-682
description: ZnO, CuO and NiO nanocrystals have been produced. The size ranges are 4-7nm, 5-9nm and
2.7±0.7nm respectively. Transmission electron microscopy (TEM), selected area electron diffraction (SAED),
energy dispersive X-ray (EDX) analysis and Ultraviolet/Visible (UV/Vis) absorption spectra have been used to
characterize these nanocrystals which have been produced via the reflux of hydrated metal acetate in alcoholic
solvents.
Effects linguistic content on voice cue perception (Koelewijn et al., 2023)
Creators: name: Koelewijn, Thomas
name: Gaudrain, Etienne
name: Shehab, Thawab
name: Treczoks, Tobias
name: Başkent, Deniz
Publisher: name: ASHA journals
Year: 2023
Subjects: classificationCode: 420102
subject: Audiology
classificationCode: 460302
subject: Audio processing
classificationCode: 460212
subject: Speech recognition

description: Purpose: For voice perception, two voice cues, the fundamental frequency (fo) and/or vocal tract length (VTL), seem to largely contribute to identification of voices and speaker characteristics. Acoustic content related to these voice cues is altered in cochlear implant transmitted speech, rendering voice perception difficult for the implant user. In everyday listening, there could be some facilitation from top–down compensatory mechanisms such as from use of linguistic content. Recently, we have shown a lexical content benefit on just-noticeable differences (JNDs) in VTL perception, which was not affected by vocoding. Whether this observed benefit relates to lexicality or phonemic content and whether additional sentence information can affect voice cue perception as well were investigated in this study.Method: This study examined lexical benefit on VTL perception, by comparing words, time-reversed words, and nonwords, to investigate the contribution of lexical (words vs. nonwords) or phonetic (nonwords vs. reversed words) information. In addition, we investigated the effect of amount of speech (auditory) information on fo and VTL voice cue perception, by comparing words to sentences. In both experiments, nonvocoded and vocoded auditory stimuli were presented.Results: The outcomes showed a replication of the detrimental effect reversed words have on VTL perception. Smaller JNDs were shown for stimuli containing lexical and/or phonemic information. Experiment 2 showed a benefit in processing full sentences compared to single words in both fo and VTL perception. In both experiments, there was an effect of vocoding, which only interacted with sentence information for fo.Conclusions: In addition to previous findings suggesting a lexical benefit, the current results show, more specifically, that lexical and phonemic information improves VTL perception. fo and VTL perception benefits from more sentence information compared to words. These results indicate that cochlear implant users may be able to partially compensate for voice cue perception difficulties by relying on the linguistic content and rich acoustic cues of everyday speech.Koelewijn, T., Gaudrain, E., Shehab, T., Treczoks, T., & Başkent, D. (2023). The role of word content, sentence information, and vocoding for voice cue perception. Journal of Speech, Language, and Hearing Research. Advance online publication. https://doi.org/10.1044/2023_JSLHR-22-00491
Διασταυρούμενες ταυτότητες στις αποδόσεις ευθύνης για τη βία εναντίον ανηλίκων στον καθημερινό λόγο
Creators: name: Παπαδοπούλου, Μαρίνα Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2024
Subjects: Βία κατά ανηλίκων
Διασταυρούμενες ταυτότητες
Κριτική κοινωνική λογοψυχολογία
Violence against children
Intersectional identities
Critical social discursive psychology

description: Το φαινόμενο της βίας εναντίον παιδιών λαμβάνει μεγάλη δημοσιότητα τα τελευταία χρόνια. Η παρούσα έρευνα αποσκοπεί στο να μελετήσει πώς κατασκευάζονται στον καθημερινό λόγο οι αποδόσεις ευθύνης σχετικά με τη βία κατά των ανηλίκων, λαμβάνοντας υπόψη τις διασταυρούμενες ταυτότητες των παιδιών θυμάτων. Η έρευνα πραγματοποιήθηκε με τη διενέργεια ομάδων εστίασης και τα δεδομένα αναλύθηκαν βάσει της κριτικής λογοψυχολογίας και της ρητορικής ψυχολογίας. Τα αποτελέσματα της ανάλυσης έδειξαν δύο κύριες επιχειρηματολογικές γραμμές. Η πρώτη δεν αποδίδει ευθύνες στα παιδιά, εστιάζοντας αφενός στην παιδική ταυτότητα και στην ανικανότητα του παιδιού για συναίνεση, και αφετέρου σε κοινωνικούς και πολιτισμικούς παράγοντες, όπως η οικογένεια, οι θεσμοί και η κοινωνική ιεραρχία. Στη δεύτερη επιχειρηματολογική γραμμή αναδύεται λόγος που έμμεσα ευθυνοποιεί το ανήλικο θύμα, με το μέγεθος της ευθύνης να κλιμακώνεται ανάλογα με το πόσες διασταυρούμενες ταυτότητες φέρει. Η ύπαρξη πολλαπλών μειονοτικών ταυτοτήτων κινητοποιεί στερεοτυπικές εικόνες, απομακρύνοντας από την κυρίαρχη εικόνα του «ευάλωτου» παιδιού.
description: The phenomenon of violence against children has gained significant publicity in recent years. This research aims to study how attributions of responsibility are constructed in everyday discourse regarding violence against minors, considering the intersecting identities of the child victims. The research was conducted through focus groups and the data were analyzed based on critical social psychology and rhetorical psychology. The analysis revealed two main lines of argumentation. The first does not assign responsibility to the children, focusing on the child's identity and the child's incapacity for consent, and on social and cultural factors such as family, institutions, and social hierarchy. The second line of argumentation indirectly blames the minor victim, with the degree of responsibility escalating depending on how many intersecting identities they carry. The presence of multiple minority identities mobilizes stereotypical images, moving away from the dominant image of the "vulnerable" child.
Crystalline Silicon Thin-Film Solar Cells on Graphite or SiC-Ceramic Substrates
Creators: name: Kunz, T.
name: Burkert, I.
name: Gawehns, N.
name: Auer, R.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
Thin Film Crystalline Silicon

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2202-2204
description: Crystalline silicon thin-film solar cells were fabricated on different types of graphite or SiC ceramic
substrates. The high temperature compatibility of the substrates allow for application of zone melting recrystallisation
for grain enlargement. Conversion efficiencies of up to 5.3% were obtained on SiC and 11.1% on graphite substrates
on an area of 1.65 cm2. Characterization results showed a high spatial variation of effective minority carrier lifetimes.
Local density of states and its mesoscopic fluctuations near the transition to a superconducting state in disordered systems
Creators: name: Burmistrov, I. S.
name: Gornyi, I. V.
name: Mirlin, A. D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We develop a theory of the local density of states (LDOS) of disordered superconductors, employing the non-linear sigma-model formalism and the renormalization-group framework. The theory takes into account the interplay of disorder and interaction couplings in all channels, treating the systems with short-range and Coulomb interactions on equal footing. We explore 2D systems that would be Anderson insulators in the absence of interaction and 2D or 3D systems that undergo Anderson transition in the absence of interaction. We evaluate both the average tunneling density of states and its mesoscopic fluctuations which are related to the LDOS multifractality in normal disordered systems. The obtained average LDOS shows a pronounced depletion around the Fermi energy, both in the metallic phase (i.e., above the superconducting critical temperature $T_c$) and in the insulating phase near the superconductor-insulator transition (SIT). The fluctuations of the LDOS are found to be particularly strong for the case of short-range interactions -- especially, in the regime when $T_c$ is enhanced by Anderson localization. On the other hand, the long-range Coulomb repulsion reduces the mesoscopic LDOS fluctuations. However, also in a model with Coulomb interaction, the fluctuations become strong when the systems approaches the SIT.
Improved Amorphous Si Solar Cell Performance by Optimization of the P2 Laser and Back Contact Process for Production Modules
Creators: name: Minh, M.
name: Mei, F.
name: Su, J.
name: Tanner, D.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
Amorphous and Microcrystalline Silicon

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2357-2359
description: Amorphous Si (-Si) solar cells are widely used in photovoltaic applications. Laser processing technique is used to scribe the module into separated single cells which are connected in series to provide the required power output from the module. Un-optimized laser process shows poor solar cell performance on production modules due to low conversion efficiency (%) and high contact resistance (RS). P2 laser process was investigated and identified as a root-cause for poor performance on production solar panels.
Field Technical Inspection of CPV Power Plants
Creators: name: Gil, E.
name: Sánchez, D.
name: De La Rubia, O.
name: Alamillo, C.
name: Rubio Berenguel, F.
name: Banda Rueda, P.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
Balance of System Components

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4483-4486
description: ISFOC is an R&D institute which is fostering the industrialization of Concentration Photovoltaic
(CPV) technologies. With this purpose ISFOC is completing the installation of 3 MW of CPV power plants from a
range of available and developing technologies and in various locations. In this paper are presented all verifications
and checking process carried out by ISFOC prior to the starting-up of a 100 kW CPV installation in order to assure
quality and reliability.
Every installed component is evaluated taking into account these verifications; specifically, if they fulfil with the
health & safety requirements and with the ruling normative and technical specifications (REBT, UNE Normative,
etc…). This evaluation will show up as well any faults or hidden defects of the construction that may occur. Hence,
common faults found during the visual inspection are described and classified in several groups, depending on the
risk level: Faults affecting acceptance process (related to health and safety requirements), Faults to be solved in up to
six moths and Faults in a follow-up process (these problems affect warranty period and future maintenance contracts).
Physical laboratory at the center of the Galaxy
Creators: name: Dokuchaev, V. I.
name: Eroshenko, Yu. N.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We review the physical processes that occur at the center of the Galaxy and that are related to the supermassive black hole Sgr A* residing there. The discovery of high-velocity S0 stars orbiting Sgr A* for the first time allowed measuring the mass of this supermassive black hole, the closest one to us, with a 10\% accuracy, with the result $M_h=(4.1\pm0.4)\times 10^6M_\odot$. Further monitoring can potentially discover the Newtonian precession of the S0 star orbits in the gravitational field of the black hole due to invisible distributed matter. This will yield the "weight" of the elusive dark matter concentrated there and provide new information for the identification of dark matter particles. The weak accretion activity of the "dormant quasar" at the Galactic center occasionally shows up as quasiperiodic X-ray and near-IR oscillations with mean periods of $11$ and $19$ min. These oscillations can possibly be interpreted as related to the rotation frequency of the Sgr A* event horizon and to the latitude oscillations of hot plasma spots in the accretion disk. Both these frequencies depend only on the black hole gravitational field and not on the accretion model. Using this interpretation yields quite the accurate values for both the mass $M_h$ and the spin $a$ (Kerr rotation parameter) of Sgr A*: $M_h=(4.2\pm0.2)\times 10^6M_\odot$ and $a=0.65\pm0.05$.
description: Review paper, 16 pages, 9 figures
Evaluation of a Dynamic Dual-Sampling Maximum Power Point Tracker for Central PV Inverters
Creators: name: Shen, J.
name: El-Barbari, S.
name: Averous, N.R.
name: Rösner, R.
name: Schröder, S.
name: Mayer, O.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
Balance of System Components

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4497-4501
description: This paper introduces the implementation and evaluation of a dynamic Maximum Power Point
Tracking algorithm for central PV systems, which has superior performance under rapidly changing
irradiance without any additional hardware investments. It shows that this so-called Dual-Sampling MPPT is
especially suitable for central PV system, i.e. for applications with limited sampling and update rate. As a
systematic evaluation, the performance of DS-MPPT is compared to a standard Perturb & Observe algorithm
(P&O) and an Incremental Conductance (IC) based algorithm. Firstly, all algorithms are implemented in
SABER model and tested using the irradiance profile of EN50530 standard as well as some local weather data.
Secondly, both DS-MPPT and IC-MPPT are integrated to a central PV inverter and run a field test for 30
days. All test results prove that the proposed DS-MPPT is significantly advantageous over traditional MPPT
algorithms. Furthermore, this paper discusses the impact of MPPT variable setups on the central PV inverters
and some potential improvements for the DS-MPPT.
Enhancing Sustainable Development Goals in Higher Education.pdf
Creators: name: Palermo, Ofelia A.
name: Wreaves, Paul
name: Dietlin, Lisa
Publisher: name: National Teaching Repository
Year: 2023
Subjects: classificationCode: 390103
subject: Economics, business and management curriculum and pedagogy

description: Purpose. From a leaderful practice perspective, this case study focuses on illustrating the impact of the synergic use of collaborative online and face-to-face international learning approaches for enhancing the integration of sustainable development goals (SDGs) into master’s (M) level curricula. Higher Education (HE) institutions have a relevant role in implementing the United Nations agenda for sustainable development and there is an ongoing debate on how HE can contribute to shape individuals driven by responsible values, attitudes, and beliefs. Case. We focus on the outcome of a partnership between two HE institutions, in the UK and USA. Two course teams jointly designed a consultancy-type experiential module that involved an initial block of collaborative online international learning and a second face-to-face one. The aim of the module was to allow mixed student teams from both institutions to provide consultancy to non-profit organisations based in the USA. Outcome. The initiative generated a distinctive dynamic where the student teams and the non-profit organisations prolonged their relationship to beyond the duration of the project. It also established a stronger connection between the two HE institutions which identified a greater overlap between their respective underpinning institutional values. Finally, the case was displayed as inspirational for responsible management education at the PRME (Principles for Responsible Management Education) Global Forum. Originality/value. Our case study shows how the adoption of a leaderful practice outlook can act as a key action enabler on all three levels that reflect the direction of mainstream scholarship on the integration of SDGs into HE curricula: underpinning paradigms, attitudes and behaviours, and agile pedagogical approaches. With our case we show that the partnership between institutions that strive to integrate SDGs experiential learning international initiatives into Higher Education M level curricula has a generative power that goes beyond mere curriculum design. It can give rise to ‘unexpected’ outcomes. In our specific case, it generated incremental innovation in collaborative modes of learning, and it provided a context for accelerating the construction of a collective social responsibility ethos among students from different countries, institutions, and academic backgrounds.
Osmosis and thermodynamics explained by solute blocking
Creators: name: Nelson, Peter Hugo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: A solute-blocking model is presented that provides a kinetic explanation of osmosis and ideal solution thermodynamics. It validates a diffusive model of osmosis that is distinct from the traditional convective flow model of osmosis. Osmotic equilibrium occurs when the fraction of water molecules in solution matches the fraction of pure water molecules that have enough energy to overcome the pressure difference. Solute-blocking also provides a kinetic explanation for why Raoult's law and the other colligative properties depend on the mole fraction (but not the size) of the solute particles, resulting in a novel kinetic explanation for the entropy of mixing and chemical potential of ideal solutions. Some of its novel predictions have been confirmed, others can be tested experimentally or by simulation.
description: 12 pages, 6 figures. arXiv admin note: text overlap with arXiv:1409.3985
Enhanced Conduction in Si Quantum Dot Superlattice in SiO2 Matrix
Creators: name: Surana, K.
name: Lebrun, J.M.
name: Lepage, H.
name: Doisneau, B.
name: Bellet, D.
name: Le Carval, G.
name: Thony, P.
name: Mur, P.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
New Materials, Cells and Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 654-656
description: Well-ordered nanocrystalline silicon quantum dots were grown in a silicon dioxide film by plasma
enhanced chemical vapor deposition followed by high temperature annealing, without using the multi-layer
approach. Transmission electron micrographs clearly demonstrate a lateral order in the formation of nanocrystals,
and diameters of about 5 nm. Photoluminescence shows a peak at 1.55 eV. Grazing incidence X-ray diffraction is
used to establish crystallinity that corresponds to the diffraction peaks of bulk crystalline Si. Nanocrystallite sizes
calculated using the Scherrer equation give diameters of 5 nm. Finally, promising current-voltage measurements
on a MIS-type photovoltaic device show the formation of a Schottky contact. Capacitance-voltage measurements
confirm the charging-discharging of the quantum dots. Both these electrical phenomena are enhanced under
illumination, thus confirming the optical effects on the electrical activity of the quantum dots. The bandgap
augmentation and conduction via the dots makes them a promising material for 3rd generation photovoltaic
applications.
Κακοποίηση Ζώων Και Προανάκριση
Creators: name: Παπαδόπουλος, Γεώργιος Μιχαήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2024
Subjects: Ζώο
Κακοποίηση
Προανάκριση
Animal
Abuse
Investigation

description: Η παρούσα εργασία ξεκινά με την παράθεση του ενδιαφέροντος της διεθνούς κοινότητας για τα ζώα. Κατόπιν, αναφέρεται στην κατευθυντήρια νομοθετική δραστηριότητα της Ευρωπαϊκής Ένωσης προς τα κράτη-μέλη, για την αναβάθμιση της ποιότητας ζωής και του περιβάλλοντος των ζώων. Ακολούθως αναλύονται τα βασικότερα σημεία του Ν4830/2021 της ελληνικής πολιτείας, σχετικά με την προστασία των ζώων συντροφιάς. Έπειτα, εξηγούνται οι προτεραιότητες της Ελληνικής Αστυνομίας στην προσπάθεια για την προστασία των ζώων. Στη συνέχεια, θα εκφραστούν σκέψεις και προβληματισμοί από την έως τώρα δραστηριότητα των αρχών πάνω στο κρίσιμο θέμα που διαπραγματευόμαστε. Αμέσως μετά θα επιχειρήσουμε να αναδείξουμε το χειρισμό των διαφόρων καταγγελιών από την Ελληνική Αστυνομία. Μετέπειτα θα αναπτυχθούν πλήρως οι περιπτώσεις κατά τις οποίες διενεργείται προανάκριση για κακοποίηση ζώου, ενώ ακόμη θα παρατεθούν σε ξεχωριστό κεφάλαιο και δύο περιστατικά στα οποία διενεργήθηκε προανάκριση για το συγκεκριμένο αντικείμενο.
description: This paper begins by citing the international community ’s interest in animals. Then, it refers to the directive legislative activity of the Union to the member states, to upgrade the quality of life and the environment of the animals. Next, the main points of N4830/2021 of the Greek government, regarding the protection of companion animals are analyzed. Then, the priorities of the Greek Police in the effort to protect animals are explained. Then, thoughts and concerns will be expressed regarding the way the authorities acted so far on the critical issue we are negotiating . Immediately afterwards we will attempt to highlight the way the Greek Police has handled various complaints. Finally, the cases in which a preliminary investigation is carried out for animal abuse will be fully developed, while in a separate chapter we will refer to two incidents in which a preliminary investigation was carried out for the specific object.
Holographic Nambu Jona-Lasinio Interactions
Creators: name: Evans, Nick
name: Kim, Keun-Young
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: NJL interactions are introduced into the D3/ probe D7 system using Witten's double trace operator prescription which includes the operator as a classical term in the effective potential. In the supersymmetric system they do not induce chiral symmetry breaking which we attribute to the flat effective potential with quark mass in the supersymmetric theory. If additional supersymmetry breaking is introduced then standard NJL behaviour is realized. In examples where chiral symmetry breaking is not preferred such as with a B field plus an IR cut off chiral condensation is triggered by the NJL interaction at a second order transition after a finite critical coupling. If the model already contains chiral symmetry breaking, for example in the B field case with no IR cut off, then the NJL interaction enhances the quark mass at all values of the NJL coupling. We also consider the system at finite temperature: the temperature discourages condensation but when combined with a magnetic field we find regions of parameter space where the NJL interaction triggers a first order chiral transition above a critical coupling.
description: 7 pages, 6 figures
Psychosocial factors on cognition and hearing (Slade et al., 2023)
Creators: name: Slade, Kate
name: Davies, Robert
name: Pennington, Charlotte R.
name: Plack, Christopher J.
name: Nuttall, Helen E.
Publisher: name: ASHA journals
Year: 2023
Subjects: classificationCode: 420102
subject: Audiology
classificationCode: 420313
subject: Mental health services
classificationCode: 520401
subject: Cognition

description: Purpose: In March 2020, the U.K. government announced that people should isolate to reduce the spread of the virus that causes COVID-19. Outside a pandemic, psychosocial factors, such as socialization and mental health, may impact the relationship between hearing loss and increased dementia risk. We aim to report the impact of psychosocial factors, including social isolation, depression, and engagement in activities, on hearing and cognitive function in younger and older adults during the COVID-19 pandemic.Method: An online survey and experiment assessed self-reported psychosocial factors, self-reported hearing ability and speech-in-noise perception, and cognition. Data were collected between June 2020 and February 2021. Older (n = 112, Mage =70.08) and younger (n = 121, Mage = 20.52) monolingual speakers of English, without any language or neurological disorders participated. Multiple linear regression models were employed to investigate hypothesized associations between psychosocial factors, and hearing and cognition, in older and younger adults.Results: Multiple regression analyses indicated that older adults displayed poorer speech-in-noise perception and poorer performance on one of four cognitive tasks, compared with younger adults; increased depression was associated with poorer subjective hearing. Other psychosocial factors did not significantly predict hearing or cognitive function.Conclusions: Data suggest that self-reported hearing and depression are related. This conclusion is important for understanding the associations between hearing loss and cognitive decline in the long term, as both hearing loss and depression are risk factors for dementia.Supplemental Material S1. Experimental materials.Supplemental Material S2. Details of excluded participants and missing data replaced by mean imputation.Supplemental Material S3. Descriptive statistics and age-group comparisons of self-report and behavioral measures.Supplemental Material S4. Tables showing the results from the multiple linear regression models before outlier removal.Supplemental Material S5. Screening questionnaire items.Slade, K., Davies, R., Pennington, C. R., Plack, C. J., & Nuttall, H. E. (2023). The impact of age and psychosocial factors on cognitive and auditory outcomes during the COVID-19 pandemic. Journal of Speech, Language, and Hearing Research. Advance online publication. https://doi.org/10.1044/2023_JSLHR-22-00703
A New Maximum Power Point Tracking Approach for Partial Shading Conditions
Creators: name: Nge, C.L.
name: Midtgård, O.-M.
name: Yordanov, G.H.
name: Norum, L.
name: Sætre, T.O.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
Balance of System Components

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4475-4478
description: Partial shading conditions may reduce the energy yield in PV systems due to poor MPPT algorithm or
system configuration. The MPPT techniques using scanning approach are capable of tracking the global peak power
but it results in loss of energy each time the scan is performed. In this paper we propose a new scanning MPP
approach that changes the time-interval between scans adaptively based on the probability of a shift of operating
point having occurred.
Imaging the dust sublimation front of a circumbinary disk
Creators: name: Hillen, M.
name: Kluska, J.
name: Bouquin, J. -B. Le
name: Van Winckel, H.
name: Berger, J. -P.
name: Kamath, D.
name: Bujarrabal, V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the first near-IR milli-arcsecond-scale image of a post-AGB binary that is surrounded by hot circumbinary dust. A very rich interferometric data set in six spectral channels was acquired of IRAS08544-4431 with the new RAPID camera on the PIONIER beam combiner at the Very Large Telescope Interferometer (VLTI). A broadband image in the \textit{H} band was reconstructed by combining the data of all spectral channels using the SPARCO method. We spatially separate all the building blocks of the IRAS08544-4431 system in our milliarcsecond-resolution image. Our dissection reveals a dust sublimation front that is strikingly similar to that expected in early-stage protoplanetary disks, as well as an unexpected flux signal of $\sim$4\% from the secondary star. The energy output from this companion indicates the presence of a compact circum-companion accretion disk, which is likely the origin of the fast outflow detected in H$α$. Our image provides the most detailed view into the heart of a dusty circumstellar disk to date. Our results demonstrate that binary evolution processes and circumstellar disk evolution can be studied in detail in space and over time.
description: PR @ http://www.eso.org/public/news/eso1608/
Advantages of High Aspect Ratio Screen-Printed Silver Lines Produced with Hot Melt Technology
Creators: name: Kerp, H.
name: Arola, D.
name: Cruz, B.
name: Van Eijk, P.
name: Shaikh, A.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1499-1501
description: The use of Hot Melt technology in solar cell manufacturing achieves high aspect ratio silver lines that
increase solar cell efficiencies due to reduced series resistance. This paper examines the relationship between aspect ratio
and screen line width of fine Hot Melt lines after firing. The results demonstrate excellent print behavior for screen line
widths down to 60 μm where aspect ratios over 0.20 with maximum values approaching 0.26 were observed in this study.
The performance of solar cells using conventional ink and Hot Melt technology with 80 μm screen line widths are
compared. Hot Melt technology enabled a relative improvement of 3.7% for the fill factor and 1.8% for the overall
efficiency compared to reference cells utilizing standard screen printing.
On the Reported Experimental Evidence for the Quasi-Fermi Level Split in Quantum Dot Intermediate-Band Solar Cells
Creators: name: Abouelsaood, A.A.
name: Ghannam, M.Y.
name: Poortmans, J.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
New Materials, Cells and Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 667-670
description: The reported experimental evidence for the quasi-Fermi level split in quantum dot intermediate-band
solar cells is carefully examined. It is shown that a separation of the quasi-Fermi level of the intermediate band
from that of the conduction band is not consistent with the experimental results of the quantum efficiency and the
luminescence intensity of the In As/Ga As cells. Much better agreement with the experimental results is achieved
by assuming a rise in temperature to about 525 K of the optically-active regions of the cell resulting from the
heating effect of the relatively high forward current used in the luminescence experiments. It is argued that the lack
of a quasi Fermi level split in this case is associated with the absence of a gap in the emission/absorption spectrum
of sub-bandgap photons.
Computing bulk and shear viscosities from simulations of fluids with dissipative and stochastic interactions
Creators: name: Jung, Gerhard
name: Schmid, Friederike
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Exact values for bulk and shear viscosity are important to characterize a fluid and they are a necessary input for a continuum description. Here we present two novel methods to compute bulk viscosities by non-equilibrium molecular dynamics (NEMD) simulations of steady-state systems with periodic boundary conditions -- one based on frequent particle displacements and one based on the application of external bulk forces with an inhomogeneous force profile. In equilibrium simulations, viscosities can be determined from the stress tensor fluctuations via Green-Kubo relations; however, the correct incorporation of random and dissipative forces is not obvious. We discuss different expressions proposed in the literature and test them at the example of a dissipative particle dynamics (DPD) fluid.
description: 8 pages, 7 figures. The following article has been accepted by Journal of Chemical Physics. After it is published, it will be found at http://scitation.aip.org/content/aip/journal/jcp
Application of High Deposition Rate (9 A/s) pm-Si:H to Photovoltaic Modules
Creators: name: Johnson, E.V.
name: Abramov, A.
name: Soro, Y.M.
name: Gueunier-Farret, M.E.
name: Méot, J.
name: Kleider, J.P.
name: Roca I Cabarrocas, P.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
Amorphous and Microcrystalline Silicon

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2339-2342
description: We present results on the application of hydrogenated polymorphous silicon (pm-Si:H) grown at a
variety of growth rates (1.5 - 9Å/s) in a standard 13.56MHz RF-PECVD system as the i-layer in 100mm x 100mm
photovoltaic modules. We correlate the module characteristics with previously presented pm-Si:H material results.
Material deposited at the highest growth rate (9Å/s) shows a low, mid-gap defect density of states - as determined by
the modulated photocurrent (MPC) technique and the constant photocurrent method - and a hole diffusion length near
200nm in the light soaked state. Photovoltaic modules using this material as the absorbing i-layer were fabricated in
superstrate p-i-n configuration. Initial active area efficiencies of 8.8% and 9.1% under AM1.5 have been achieved
for modules with i-layers grown at 1.5Å/s and 9 Å/s, respectively, decreasing to 7.4% and 7.2% after light soaking.
Values of VOC above 0.9V have been achieved using a p-type a-SiC:H layer and a-SiC:H buffer layers. After light
soaking, modules grown at 1.5 Å/s and 5Å/s exhibit a decrease in fill factor of about 10%, but this is partially offset
by an increase in VOC of 3-5%. However, for the modules with i-layers grown at 9Å/s, only a very small increase
(~1%) in VOC is occasionally observed.
How close can we approach the event horizon of the Kerr black hole from the detection of the gravitational quasinormal modes?
Creators: name: Nakamura, Takashi
name: Nakano, Hiroyuki
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using the WKB method, we show that the peak location ($r_{\rm peak}$) of the potential, which determines the quasinormal mode frequency of the Kerr black hole, obeys an accurate empirical relation as a function of the specific angular momentum $a$ and the gravitational mass $M$. If the quasinormal mode with $a/M \sim 1$ is observed by gravitational wave detectors, we can confirm the black-hole space-time around the event horizon, $r_{\rm peak}=r_+ +O(\sqrt{1-q})$ where $r_+$ is the event horizon radius. While if the quasinormal mode is different from that of general relativity, we are forced to seek the true theory of gravity and/or face to the existence of the naked singularity.
description: 8 pages, 4 figures
Corrosion Testing of Aluminium PV Systems
Creators: name: Herfurth, D.
name: Hentschel, M.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
Balance of System Components

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4391-4393
description: Ensuring the durability of frame systems for PV and thermal components over 20 years involves a great
deal of responsibility. What is decisive here is secure structural analysis design on the one hand and execution according
to prevailing standards and the technological state of the art. Those responsible for this are the planner and the installer
carrying out the work. Normally, the widest range of planning tools of the frame manufacturer can be drawn upon for the
selection of the right frame components. Thus, only the technically correct connection of the frame system to the existing
building structure or, in the case of outdoor systems, the connection to the subsoil remains in the responsibility of the
planner and installer. By contrast, the resistance of a frame system to wind and weather over the required period is an
important aspect in the context of developing a frame system. The rapidly expanding market for renewable energy has
led to installations of solar energy systems in regions with increasingly extreme environmental conditions. Particularly in
the case of metal structures, corrosion plays a major role in this connection. Conergy AG, in close cooperation with
BAM – the Federal Institute for Materials Research and Testing, launched a test series on the subject of corrosion of
frame systems. This includes short-term tests in a salt spray chamber, as well as long-term tests on Germany’s only
open sea island – Helgoland. This article will explain the corrosion problem, especially in connection with solar energy
systems and their components. In general, corrosion (from Latin corrodere “to gnaw away”), is defined as the gradual
destruction of a material through actions of other materials in the surroundings. The goal here is to demonstrate the
interaction and corrosion behaviour of different materials, especially of stainless steel and aluminium.
On the Green and Wald formalism
Creators: name: Ostrowski, Jan J.
name: Roukema, Boudewijn F.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Backreaction in the cosmological context is a longstanding problem that is especially important in the present era of precise cosmology. The standard model of a homogeneous background plus density perturbations is most probably oversimplified and is expected to fail to fully account for the near-future observations of sub-percent precision. From a theoretical point of view, the problem of backreaction is very complicated and deserves careful examination. Recently, Green and Wald claimed in a series of papers to have developed a formalism to properly describe the influence of density inhomogeneities on average properties of the Universe, i.e., the backreaction effect. A brief discussion of this framework is presented, focussing on its drawbacks and on misconceptions that have arisen during the "backreaction debate".
description: Contribution to the proceedings of MG14
title: Η επίδραση των ασκήσεων Clinical Pilates σε ασθενείς με χρόνια οσφυαλγία μη ειδικής αιτιολογίας στη λειτουργία του αναπνευστικού συστήματος
title: The effect of Clinical Pilates on the function of the respiratory system in patients with chronic low back pain of non-specific causes
titleType: AlternativeTitle
Creators: name: Λαόσογλου, Βασίλειος
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2023
Subjects: Αναπνευστικό σύστημα
Xρόνια οσφυαλγία
Clinical Pilates
Μυοσκελετικό σύστημα

description: Εισαγωγή: Η χρόνια οσφυαλγία μη ειδικής αιτιολογίας εκτός από τα τοπικά συμπτώματα στην περιοχή της οσφυϊκής μοίρας και τη μειωμένη λειτουργικότητα, φαίνεται να επηρεάζει και την αναπνευστική λειτουργία του ασθενούς. Έχει παρατηρηθεί πως υπάρχουν διαφοροποιήσεις ως προς τη στάση του σώματος προκειμένου να διαμορφωθεί μία ανταλγική θέση, με αποτέλεσμα το καμπτικό πρότυπο της σπονδυλικής στήλης αλλά και ως προς το επίπεδο της θωρακικής μοίρας, περιορίζοντας την κινητικότητα των πλευρών και του διαφράγματος. Ο στόχος της παρούσας μελέτης είναι να εξετάσει την επίδραση των ασκήσεων Clinical Pilates στη λειτουργία του αναπνευστικού συστήματος. Επίσης, αξιολογήθηκε η λειτουργικότητα και η ένταση του πόνου των ασθενών με χρόνια οσφυαλγία μη ειδικής αιτιολογίας. Μεθοδολογία: Στη μελέτη συμμετείχαν ασθενείς με οσφυαλγία μη ειδικής αιτιολογίας που προσήλθαν σε ιδιωτικό φυσικοθεραπευτήριο. Πραγματοποίηθηκαν δέκα συνεδρίες, τρεις την εβδομάδα και διάρκειας μίας ώρας και είκοσι λεπτών, που περιλάμβαναν φυσικά μέσα, μάλαξη και 4 διαφορετικές ασκήσεις Clinical Pilates. Για την αξιολόγηση της λειτουργίας του αναπνευστικού συστήματος πραγματοποιήθηκε σπιρομέτρηση και μέτρηση της έκπτυξης του θωρακικού κλωβού. Επιπρόσθετα, αξιοποιήθηκε η κλίμακα Quebec Back Pain Disability Scale για τη μέτρηση της λειτουργικότητας. Όλες οι μετρήσεις πραγματοποιήθηκαν πριν και μετά την παρέμβαση. Αποτελέσματα: Αναφορικά με το δείγμα, επτά συμμετέχοντες ολοκλήρωσαν και τις δέκα συνεδρίες. Φάνηκε να υπάρχει στατιστικώς σημαντική βελτίωση της FEV1% από 84.71±6.25σε 89.6±6.46, p<0.05, καθώς επίσης υπήρξε στατιστικώς σημαντική βελτίωση της FVC% από 89.57±8.58 σε 95.0±7.28, p<0.05. Ακόμα υπήρξε στατιστικώς σημαντική βελτίωση της FEV1/FVC από 97.86±7.19 σε 99.86±6.66, p<0.05 και της θωρακικής έκπτυξης από 2.38±0.86 σε 2.58±0.95. Σχετικά με την ένταση του πόνου, η μεγαλύτερη τιμή πριν την παρέμβαση ήταν 06/10 ενώ η μικρότερη 02/10. Μετά την παρέμβαση η μεγαλύτερη τιμή διαμορφώθηκε σε 03/10, ενώ η μικρότερη σε 0/10. Το μεγαλύτερο σκορ της κλίμακας Quebec Back Pain Disability Scale πριν την παρέμβαση ήταν 66/100 και το μικρότερο 13/100, ενώ μετά την παρέμβαση το μεγαλύτερο σκορ ήταν 31/100 και το μικρότερο 06/100, όπου υπήρξε στατιστικώς σημαντική βελτίωση. Συμπέρασμα: Οι ασκήσεις Clinical Pilates φάνηκε να είναι μια μέθοδος ασκήσεων που μπορεί να επηρεάσει τους δείκτες FEV1 και FVC, καθώς επίσης και την έκπτυξη του θώρακα σε ασθενείς με χρόνια οσφυαλγία μη ειδικής αιτιολογίας. Ακόμα, φάνηκε να μπορεί να επιδράσει στη λειτουργικότητα των ασθενών και στη μείωση της έντασης του πόνου σε στατιστικώς σημαντικά επίπεδα.
Large Area Low Pressure-Chemical Vapour Deposited ZnO:B for Thin Film Silicon Based Solar Cells
Creators: name: Addonizio, M.L.
name: Diletto, C.
name: Antonaia, A.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
Amorphous and Microcrystalline Silicon

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2313-2316
description: This paper has been mainly dedicated to large area deposition of Zinc Oxide (ZnO) thin films by Low
Pressure – Metal Organic Chemical Vapour Deposition. A customized apparatus to grow ZnO on 30 x 30 cm2 substrates has
been developed in our laboratory, taking care of the design and the realisation of an original reactor geometry with a novel
reactant distribution system. ZnO:B material, with a low sheet resistance (< 8 Ω/sq) and with a high transmittance (> 82 %)
in the whole wavelength range of photovoltaic interest, has been obtained. A homogeneous light scattering effect on largearea
substrate, as a consequence of the uniform surface roughness of the ZnO film, has been achieved. The spatial
distributions of both film thickness and sheet resistance have been measured. Since the spatial distribution of these material
properties is strongly correlated to the spatial temperature uniformity, growth rate, resistivity and surface texturization have
been studied at different deposition temperatures. From our experimental results we deduced that it was possible to select a
range of deposition temperatures between 145 ÷ 153 °C where the material properties are quite similar and excellent in
terms of transparency, conductivity and texturization.
Semiflexible Polymers Under Good Solvent Conditions Interacting With Repulsive Walls
Creators: name: Egorov, Sergei A.
name: Milchev, Andrey
name: Virnau, Peter
name: Binder, Kurt
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Solutions of semiflexible polymers confined by repulsive planar walls are studied by density functional theory and Molecular Dynamics simulations, to clarify the competition between the chain alignment favored by the wall and the depletion caused by the monomer-wall repulsion. A coarse-grained bead-spring model with bond bending potential is studied, varying both the contour length and the persistence length of the polymers, as well as the monomer concentration in the solution (good solvent conditions are assumed throughout, and solvent molecules are not included explicitly). The profiles of monomer density and pressure tensor components near the wall are studied, and the surface tension of the solution is obtained. While the surface tension slightly decreases with chain length for flexible polymers, it clearly increases with chain length for stiff polymers. Thus, at fixed density and fixed chain length the surface tension also increases with increasing persistence length. Chain ends always are enriched near the wall, but this effect is much larger for stiff polymers than for flexible ones. Also the profiles of the mean square gyration radius components near the wall and the nematic order parameter are studied to clarify the conditions where wall-induced nematic order occurs.
description: 17 pages, 24 figures
A Reliability and Availability Sensitivity Study of a Large Photovoltaic System
Creators: name: Collins, E.
name: Miller, S.P.
name: Mundt, M.J.
name: Stein, J.
name: Sorensen, N.R.
name: Granata, J.
name: Quintana, M.A.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
Balance of System Components

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4463-4469
description: A reliability and availability model has been developed for a portion of the 4.6 megawatt (MWdc)
photovoltaic system operated by Tucson Electric Power (TEP) at Springerville, Arizona using a commercially
available software tool, GoldSim™. This reliability model has been populated with life distributions and repair
distributions derived from data accumulated during five years of operation of this system. This reliability and
availability model was incorporated into another model that simulated daily and seasonal solar irradiance and
photovoltaic module performance. The resulting combined model allows prediction of kilowatt hour (kWh)
energy output of the system based on availability of components of the system, solar irradiance, and module and
inverter performance. This model was then used to study the sensitivity of energy output as a function of
photovoltaic (PV) module degradation at different rates and the effect of location (solar irradiance). Plots of
cumulative energy output versus time for a 30 year period are provided for each of these cases.
Migration und Integration
Creators: name: Schmid, Walter (Autor/in)
Publisher: name: Zenodo
Year: 2016

description: Keine Beschreibung.
description: + ID der Publikation: hslu_42603 + Art des Beitrages: Publikumsmedien + Sprache: Deutsch + Letzte Aktualisierung: 2016-11-16 14:22:53