cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Leveraging universal design to create brave learning environments
Creators: name: Renner, Amy Seegmiller
name: Hartzheim, Lisa
name: Villerot, Theresa
name: Craft, Stacy
name: Adams, Rhonda
name: James, Kara
name: Arao, Brian
name: Crowston, Lizzie
name: Hall, Elissa
Publisher: name: F1000 Research Limited
Year: 2023

description: The ever-changing landscape of education and need for intentional integration of technology has necessitated the ongoing support of educators and learners at Mayo Clinic. Over the last decade, a yearly event called the Education and Technology Forum (ETF) has taken root and become a community of practice to assist with sharing ideas, advancing knowledge and skills, and engaging in innovative practices. This year’s event explored the importance of cultivating brave spaces by establishing learning environments that are accessible for all through Universal Design for Learning (UDL).
Nearly Damage-Free Laser Cutting: Breakthrough on the Way to Safe Handling of Thin EFG Wafers
Creators: name: Grahl, T.
name: Schlotmann, P.
name: Westram, I.
name: Seidl, A.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1282-1284
description: In this work, a new laser cutting technology is used for the separation of wafers grown with the EFG method. This technology uses a water-jet guided laser beam and enables a damage-reduced separation since active cooling results in a smaller heat-affected zone compared to conventional laser cutting. Using DoE, a parameter study was performed, and the relevant parameters were identified to obtain both a good edge quality as well as a high depth of ablation. The good edge quality manifests itself in high wafer strengths, measured by 4-bar bending tests.
Mexican medical students’ perceptions of medical care for migrant patients
Creators: name: Castro, Evelin
name: García, Andoni
name: Hassler Stefan Macías Sánchez
name: Cuevas, Mary
name: Delgadillo, Enrique
name: Muñoz, Camila
name: Diaz, Jorge Alberto Guevara
name: Farfan, Alejandra Rodríguez
name: Pérez, Gloria Lizbeth Pérez
name: Mitzy Gutiérrez
Publisher: name: F1000 Research Limited
Year: 2023

description: Migration is not a new problem and is well-known as the repercussions of any social, cultural, and political phenomenon. Over the years, there has been a marked increase in the population that has to migrate due to multiple factors. Migrants have different physical and mental health needs acquired through experiences in their country of origin and migratory moves. These experiences can increase migrants' vulnerability to accidental injuries, burns, poor prenatal care, mental health problems, and chronic or infectious diseases.
 The present work is a cross-sectional online survey to assess the perception of medical care for migrant patients from Mexican medical students in clinical rotations from 3 universities. The survey has ten items with a Likert scale from 1 to 5 to assess medical students' perceptions.
ORIENTE: A New Numerical Sizing Software for PV/H2 Hybrid System
Creators: name: Sailler, S.
name: Darras, C.
name: Thibault, C.
name: Muselli, M.
name: Poggi, P.
name: Hoguet, J.C.
name: Besse, S.
name: Pinton, E.
name: Grehant, S.
name: Gailly, F.
name: Turpin, C.
name: Astier, S.
name: Fontès, G.
Publisher: name: WIP-Munich
Year: 2009
Subjects: PV Systems
PV Power Plants

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 4158-4161
description: Based on a new numerical sizing code named ORIENTE (Optimization of Renewable Intermittent
Energies with hydrogeN for auTonomous Electrification) under Matlab software, the aim of this work is the
optimization of PV- H2 system with the perspective to feed electricity for a few homes. This system is composed of
the different following components: the renewable energy production system (PV plant), the energy storage system (a
PEM electrolyzer with its auxiliaries, storage tanks for H2, O2 and H2O, and battery pack), a PEM fuel-cell and its
associated converters. ORIENTE is based on a sequential running time. It computes the energy flows and the energy
balance during the specific simulation time, determines the running time and the nominal power for each component,
the evolution of gas volume storage (H2 ,O2 ) and the sizing curve (PPV,VH2 ) leading to system autonomy for the
predefined load. This paper presents an example of a hybrid PV-H2 system sizing using ORIENTE in the case of an
electricity supply of a few homes.
Ni incorporation in MgFe2O4 for improved CO2-splitting activity during solar fuel production
Creators: name: Takalkar, Gorakshnath
name: Bhosale, Rahul R.
name: AlMomani, Fares
name: Rashid, Suliman
name: Shakoor, R. A.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Materials engineering
subject: FOS: Materials engineering
subject: Mechanical engineering
subject: FOS: Mechanical engineering

description: Efficacy of the sol–gel derived Ni-doped Mg-ferrites for an enhanced CO2 splitting activity is investigated. The results allied with the characterization indicate the formation of nominally phase pure Ni-doped Mg-ferrites with a coarser particle morphology. Ni-doped Mg-ferrites are further tested for multiple thermal reduction as well as CO2 splitting steps by using a thermogravimetric analyzer. The results associated with the thermogravimetric analysis confirmed that most of the Ni-doped Mg-ferrites attained a steady TR aptitude after crossing the 5th or 6th cycle. Likewise, the CS capability of all the Ni-doped Mg-ferrites accomplished consistency after 4th cycle (except for Ni0.11Mg0.88Fe2.01O4.005). The Ni0.90Mg0.11Fe2.04O4.070 showed the highest amount of O2 release (117.1 μmol/g cycle) and CO production (210.3 μmol/g cycle) in ten consecutive thermochemical cycles. Besides, Ni0.29Mg0.72Fe1.98O3.980 indicated better re-oxidation aptitude ($$ n_{\text{CO}} /n_{{{\text{O}}_{2} }} $$nCO/nO2 ratio = 1.89) when compared with other Ni-doped Mg-ferrites.Other Information Published in: Journal of Materials Science
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10853-020-04794-1
Co-precipitation synthesized nanostructured Ce0.9Ln0.05Ag0.05O2−δ materials for solar thermochemical conversion of CO2 into fuels
Creators: name: Takalkar, Gorakshnath
name: Bhosale, Rahul R.
name: AlMomani, Fares
name: Rashid, Suliman
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Materials engineering
subject: FOS: Materials engineering
subject: Mechanical engineering
subject: FOS: Mechanical engineering

description: Synthesis, characterization, and application of Ce0.9Ln0.05Ag0.05O2−δ materials (where, Ln = La, Pr, Nd, Sm, Gd, Tb, Dy, Er) for the thermochemical conversion of CO2 reported in this paper. The Ce0.9Ln0.05Ag0.05O2−δ materials were synthesized by using an ammonium hydroxide-driven co-precipitation method. The derived Ce0.9Ln0.05Ag0.05O2−δ materials were characterized via powder X-ray diffraction, scanning electron microscope, and electron diffraction spectroscopy. The characterization results indicate the formation of spherically shaped Ce0.9Ln0.05Ag0.05O2−δ nanostructured particles. As-prepared Ce0.9Ln0.05Ag0.05O2−δ materials were further tested toward multiple CO2 splitting cycles by utilizing a thermogravimetric analyzer. The results obtained indicate that all the Ce0.9Ln0.05Ag0.05O2−δ materials produced higher quantities of O2 and CO than the previously studied pure CeO2 and lanthanide-doped ceria materials. Overall, the Ce0.911La0.053Ag0.047O1.925 showed the maximum redox reactivity in terms of O2 release (72.2 μmol/g cycle) and CO production (136.6 μmol/g cycle).Other Information Published in: Journal of Materials Science
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10853-020-04567-w
Analysis of the Energy of a PV Generator Using Artificial Neural Network
Creators: name: Almonacid, F.
name: Rus, C.
name: Pérez-Higueras, P.
name: Hontoria, L.
name: Aguilar, J.D.
Publisher: name: WIP-Munich
Year: 2009
Subjects: PV Systems
PV Power Plants

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 4169-4172
description: Photovoltaic (PV) systems have shown themselves to be one of the most promising applications for
dealing with solar electricity generation. This way, in the last few years, the PV market has drastically changed.
According to a report of International Energy Agency [1] there has been a substantial market growth in the last years,
with an ongoing trend in grid-connected applications. Countries enhance the international collaboration efforts which
accelerate the development and deployment of photovoltaic solar energy as a significant and sustainable renewable
energy option.
Nevertheless there is one difference between the theorical power that it is going to be installing and the power
that, in fact, the PV system provides.
A previous method based on artificial neural networks (ANNs), has been developed to electrical characterisation
of PV modules. This method was able to generate V-I curves of si-crystalline PV modules for any irradiance and
module cell temperature. The results showed that the proposed ANN introduced a good accurate prediction for sicrystalline
PV modules performance when compared with the measured values.
Now, this method, based in ANNs, is going to be applied to obtain a suitable value of the energy provided by a
photovoltaic installation. Particularly this method is going to be applied to obtain the energy provided by a PV system
locates at University of Jaén.
Synthesis and properties of polyelectrolyte multilayered microcapsules reinforced smart coatings
Creators: name: Khan, Adnan
name: Ubaid, Fareeha
name: Fayyad, Eman M.
name: Ahmad, Zubair
name: Shakoor, R. A.
name: Montemor, M. F.
name: Kahraman, Ramazan
name: Mansour, Said
name: Hassan, Mohammad K.
name: Hasan, Anwarul
name: Abdullah, Aboubakr M.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Materials engineering
subject: FOS: Materials engineering
subject: Mechanical engineering
subject: FOS: Mechanical engineering

description: The present research work focuses on the synthesis, characterization and properties of novel polyelectrolyte multilayered microcapsules used as smart additives in organic coatings for corrosion protection of steel parts. Urea formaldehyde microcapsules encapsulated with linalyl acetate (UFMCs), sensitive to mechanical stimulus, were synthesized by in situ emulsion polymerization technique. In the next step, dodecylamine, working as a pH stimulus corrosion inhibitor, was loaded into layers of polyelectrolyte molecules, polyethylenimine (PEI) and sulfonated polyether ether ketone (SPEEK). These were applied layer-by-layer over the microcapsules to form inhibitor containing multilayered urea formaldehyde microcapsules (MLUFMCs). In the next step, MLUFMCs (5.0 wt%) and UFMCs (5.0 wt%) were thoroughly dispersed into the epoxy resin and coated on cleaned steel. A comparison of the structural, thermal and anticorrosive properties indicates that coatings modified with multilayered capsules (PMLSCs) demonstrate good thermal stability, improved self-healing characteristics and higher corrosion resistance compared to the coating modified with urea formaldehyde microcapsules. The improved properties of PMLSCs can be attributed to efficient release of the encapsulated self-healing agent and corrosion inhibitor from the MLUFMCs. Therefore, epoxy coatings modified with the novel multilayered capsules may be attractive for corrosion protection of steel parts used in oil and gas and related industries.Other Information Published in: Journal of Materials Science
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10853-019-03761-9
Effect of vacancy defects on the electronic transport properties of an Ag–ZnO–Pt sandwich structure
Creators: name: Berdiyorov, G. R.
name: Boltayev, F.
name: Eshonqulov, G.
name: Hamoudi, H.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Electronics, sensors and digital hardware

description: The effect of zinc and oxygen vacancy defects on the electronic transport properties of Ag(100)–ZnO(100)–Pt(100) sandwich structures is studied using density functional theory in combination with the nonequilibrium Green’s functional formalism. Defect-free systems show clear current rectification due to voltage dependent charge localization in the system as revealed in our transmission eigenstates analysis. Regardless of the location, oxygen vacancies result in enhanced current in the system, whereas Zn vacancy defects reduce the charge transport across the junction. The current rectification becomes less pronounced in the presence of both types of vacancy defects. Our findings can be of practical importance for developing metal-insulator-metal diodes.Other Information Published in: Journal of Computational Electronics
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10825-021-01663-1
Josephson systems based on ballistic point contacts between single-band and multi-band superconductors
Creators: name: Yerin, Y. S.
name: Kiyko, A. S.
name: Omelyanchouk, A. N.
name: Il'ichev, E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The Josephson effect in ballistic point contacts between single-band and multi-band superconductors was investigated. It was found that in the case of Josephson junctions formed by a single-band and an $s_\pm$-wave two-band superconductor as well as by a single-band and a three-band superconductor the junctions become frustrated, demonstrating the $ϕ$-contact properties. Depending on the ground state of a three-band superconductor with broken time-reversal symmetry (BTRS), the Josephson junction can have from one to three energy minima, some of which can be locally stable. We also study the behavior of a dc SQUID based on the Josephson junctions between single-band and multi-band superconductors. Some features on the dependences of the critical current and the total magnetic flux on the applied flux of a dc SQUID based on the Josephson point contacts between a single-band superconductor and an $s_\pm$-wave superconductor, three-band superconductor with BTRS and three-band superconductor without BTRS as compared to the conventional dc SQUIDs based on single-band superconductors were found. The results can be used as an experimental tool to detect the existence of multi-band structure and BTRS.
description: 23 pages, 11 figures
Effect of chemical modification on electronic transport properties of carbyne
Creators: name: Berdiyorov, G. R.
name: Khalilov, U.
name: Hamoudi, H.
name: Neyts, Erik C.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Electronics, sensors and digital hardware

description: Using density functional theory in combination with the Green’s functional formalism, we study the effect of surface functionalization on the electronic transport properties of 1D carbon allotrope—carbyne. We found that both hydrogenation and fluorination result in structural changes and semiconducting to metallic transition. Consequently, the current in the functionalization systems increases significantly due to strong delocalization of electronic states along the carbon chain. We also study the electronic transport in partially hydrogenated carbyne and interface structures consisting of pristine and functionalized carbyne. In the latter case, current rectification is obtained in the system with rectification ratio up to 50%. These findings can be useful for developing carbyne-based structures with tunable electronic transport properties.Other Information Published in: Journal of Computational Electronics
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10825-020-01639-7
The design of an assessment template for OBE
Creators: name: Esposito, Mariangela
Publisher: name: F1000 Research Limited
Year: 2023

description: The Royal College of Physicians Ireland (RCPI) has started the process of updating its Medical Training Curricula from a Minimum Requirements to an Outcome Based Education (OBE) model.

 Assessments have been redesigned through the pilot phases to facilitate the provision of structured feedback and trainer reporting on performance.
 One key aspect of OBE is prioritising the quality and frequency of feedback. This is particularly relevant for high-stake outcomes in terms of medical risk, responsibility and capability.

 For this reason, the model of Entrustable Professional Activities (EPA) has been included in the design of the OBE assessment at RCPI.
 The EPA model is particularly relevant for OBE Workplace-Based Assessments (WBA) as trainers judge trainees’ readiness for autonomy on a specific outcome primarily by using direct evidence of competence. EPAs are usually linked to specific learning outcomes, so they are independently executable, observable, and measurable and, therefore, suitable for entrustment decisions.

 RCPI has designed a new ePortfolio form template to capture feedback for OBE WBAs. This form called “Feedback Opportunity” is designed to adapt to any specialty and has a customisable section that links to specific types of WBAs.

 The form's main purpose is to ensure that feedback is regularly provided to trainees for all the available training opportunities. Feedback can be provided by an “assessor” who can be the assigned trainer, other trainers, peers, or healthcare staff witnessing the trainee’s performance.

 For high-stakes outcomes, an additional section of the form can be filled out according to the EPA model. The design of this section considers the level of independence/responsibility in a clinical task by a trainee, but it takes into consideration also a process of remediation/improvement/accountability by recommending a specific frequency of re-assessment.

 By presenting the design of this form we aim to generate a discussion on the nature and limitations of assessment in OBE. We hope to gather as much feedback to continue to improve this template and facilitate the assessment experience for trainees and trainers working with OBE.
The breakdown of the reaction-diffusion master equation with non-elementary rates
Creators: name: Smith, Stephen
name: Grima, Ramon
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The chemical master equation (CME) is the exact mathematical formulation of chemical reactions occurring in a dilute and well-mixed volume. The reaction-diffusion master equation (RDME) is a stochastic description of reaction-diffusion processes on a spatial lattice, assuming well-mixing only on the length scale of the lattice. It is clear that, for the sake of consistency, the solution of the RDME of a chemical system should converge to the solution of the CME of the same system in the limit of fast diffusion: indeed, this has been tacitly assumed in most literature concerning the RDME. We show that, in the limit of fast diffusion, the RDME indeed converges to a master equation, but not necessarily the CME. We introduce a class of propensity functions, such that if the RDME has propensities exclusively of this class then the RDME converges to the CME of the same system; while if the RDME has propensities not in this class then convergence is not guaranteed. These are revealed to be elementary and non-elementary propensities respectively. We also show that independent of the type of propensity, the RDME converges to the CME in the simultaneous limit of fast diffusion and large volumes. We illustrate our results with some simple example systems, and argue that the RDME cannot be an accurate description of systems with non-elementary rates.
description: 8 pages, 3 figures
Preservice Teachers’ Perception of Plagiarism: A Case from a College of Education
Creators: name: Romanowski, Michael H.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Philosophy
subject: FOS: Philosophy, ethics and religion
subject: Sociology
subject: FOS: Sociology

description: Few studies examine plagiarism in a Middle Eastern context, specifically from the perspectives of preservice teachers. As future gatekeepers of academic integrity, preservice teachers need to understand plagiarism. This study surveyed 128 female preservice teachers in one university in the Gulf Cooperation Council (GCC) countries. The survey explores preservice teachers regarding their understandings and reasons for academic plagiarism and their responses to particular scenarios. Findings indicate that preservice teachers have a thorough comprehension of plagiarism and suggest a lack of knowledge of citing sources, weak writing skills, a lack of time, and not knowing the research process as reasons for plagiarism. Informants' responses to six scenarios are presented to illustrate their perspectives further. Discussion addresses language and cultural issues to contextualize the study.Other Information Published in: Journal of Academic Ethics
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10805-021-09395-4
Time and Temperature Dependence of the Activity of Recombination Centres in Very High Lifetime p-Type Multicrystalline Silicon
Creators: name: Olsen, E.
name: Stokkan, G.
name: Kvande, R.
name: Øvrelid, E.J.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1257-1259
description: The life time of minority charge carriers in conventional as-cast boron doped multicrystalline silicon (mc-Si) blocks has been studied as a function of thermal treatment at various temperatures in the range 100-400°C . Life time measurements have been performed by QSSPC after each thermal treatment. The ingot exhibited lifetime degradation from more than 200μs immediately after treatment, to a stable value of about 40μs on the order of months after thermal treatment. Formation of metal-boron pairs of a fast diffusing transition metal may be identified as the source of the lifetime degradation. A reference ingot doped with aluminium instead of boron crystallized under the same conditions did not show the behaviour. The time scale of the effect taking place after thermal treatment indicates the dissolution and subsequent formation of Cr-B pairs to be the source of the effect. A sample has been repeatedly thermally treated at a range of temperatures to regain the high lifetime.
Combating Academic Corruption and Enhancing Academic Integrity through International Accreditation Standards: The Model of Qatar University
Creators: name: Mattar, Mohamed Y.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Philosophy
subject: FOS: Philosophy, ethics and religion
subject: Sociology
subject: FOS: Sociology

description: Academic institutions aim at achieving the highest standards of education and learning. Consequently, they prohibit academic corruption such as cheating or plagiarism. This article examines how international accreditation and quality assurance standards embody academic integrity as a main factor in deciding whether an academic institution should be accredited, and what ranking should an academic institution acquire in a competitive contest for educational excellence. Academic integrity is broadly defined to include, in addition to cheating and plagiarism, compliance with standards of human rights, labor rights, corporate social responsibility, ant-corruption measures, environmental protection, social media usage, protection of underage students, anti-radicalization and extremism, avoidance of conflict of interest, faculty professionalism, students codes of conduct and human experimentation. Academic institutions should adopt policies that are designed to address these diverse standards and accommodate diversity and enhance access to education for all without discrimination. Academic institutions should also strictly require the highest standards in teaching and research. This article will discuss the different policies, laws, rules and regulations adopted by Qatar University as a model for incorporating academic integrity, which may be of interest to the international higher education community. This article will ask two main questions; are accrediting institutions asking the right questions to find out whether an academic institution strictly adheres to a policy of academic integrity, and whether policies adopted by academic institutions, Qatar University as a model, are adequate to address various violations of academic integrity.Other Information Published in: Journal of Academic Ethics
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10805-021-09392-7
Structural and Electrical Properties of Hydrogenated Polycrystalline Germanium Thin Films Prepared by RF Magnetron Sputtering for Thin Film Photovoltaics
Creators: name: Tsao, C.
name: Wong, J.
name: Campbell, P.
name: Conibeer, G.
name: Song, D.
name: Green, M.A.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
New Materials, Cells and Modules

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 247-250
description: Polycrystalline germanium thin films on silicon nitride coated glass had been investigated with the aim
to develop a material for the bottom cells of low cost monolithic tandem solar cells in our previous work. In this
paper, the structural and electrical properties of germanium thin films are explored with respect to deposition
temperature and the technique of in situ hydrogenation. The films were deposited by radio-frequency magnetron
sputtering in a mixture of 15 sccm Ar (and 10 sccm H2 if in situ hydrogenation is required) at a variety of substrate
temperatures (Ts) ≤ 450 °C. Raman, X-ray diffraction, and UV-vis reflectance spectra reveal the structural evolution
from amorphous to crystalline phase with increasing Ts. It is found that the introduction of hydrogen does not
apparently affect the structural properties of the film sputtered at 450°C although the onset crystallization
temperature is ~90°C higher than that sputtered without H2. On the other hand, the introduction of H2 significantly
improves the dark conductivity of the films sputtered at various temperatures.
Orientation of Grains and Twins in EFG-Silicon Ribbons
Creators: name: Behnken, H.
name: Mathes, M.
name: Westram, I.
name: Müller, M.
name: Seidl, A.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1260-1263
description: Silicon ribbons grown by Edge-defined Film-fed Growth (EFG) show numerous twins along the growth direction. These are often arranged as packages of twin lamellae with distances between adjacent twins of some μm up to mm. It turned out in the last years that wafer regions of just those twin packages usually show good electric lifetime and efficiency in comparison with non-twinned regions. Increasing the extent of twinned regions could therefore be a path to increase the overall efficiency. The conditions for the growth of twin packages are rather unknown. The present study investigates the crystal orientation of grains and twins as well as the orientation of the twin boundaries within actual EFG ribbons in order to deliver hints for appropriate growth conditions.
Silicon Material Technology and Evaluation Center  (SIMTEC) at Fraunhofer ISE - Achievements and Visions
Creators: name: Riepe, S.
name: Schumann, M.
name: Schmich, E.
name: Janz, S.
name: Eyer, A.
name: Reber, S.
name: Bett, A.W.
name: Weber, E.R.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1264-1269
description: The Silicon Material Technology and Evaluation Center SIMTEC has been established at Fraunhofer ISE as a platform for research and development of front end Silicon material processes. It comprises the fields of block crystallization and crucible coating, block shaping and wafering as well as high-throughput silicon epitaxy. Multicrystalline silicon blocks of industrial size with 260 kg and medium size with 85 kg silicon have been produced and characterized. The best efficiency of cells produced on wafers diced of these blocks was 14.6 % for standard industrial cell processing and 13.9 % for the crystalline thin-film EpiCell approach. The kerf-loss at wafering could be reduced to 120 μm by using wires down to 100 μm thickness and wafers as thin as 70 μm have successfully been cut.
Monotonicity of the collateralized debt obligations term structure model
Creators: name: Barski, Michał
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mathematical Finance (q-fin.MF)
subject: Probability (math.PR)
subject: FOS: Economics and business
subject: FOS: Mathematics
subject: 91B28, 91B70, 91B24

description: The problem of existence of arbitrage free and monotone CDO term structure models is studied. Conditions for positivity and monotonicity of the corresponding Heath-Jarrow-Morton-Musiela equation for the $x$-forward rates with the use of the Milian type result are formulated. Two state spaces are taken into account - of square integrable functions and a Sobolev space. For the first the regularity results concerning pointwise monotonicity are proven. Arbitrage free and monotone models are characterized in terms of the volatility of the model and characteristics of the driving Lévy process.
description: 28 pages
Plasmon Enhanced Thin Film PV Devices on Nanostructured Metallo-Dielectric Substrates
Creators: name: Buatier De Mongeot, F.
name: Boragno, C.
name: Toma, A.
name: Chiappe, D.
name: Delli Veneri, P.
name: Mercaldo, L.V.
name: Usatii, I.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
New Materials, Cells and Modules

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 322-325
description: In this paper we describe innovative nanostructured substrates which are proposed as supports for thin
film PV devices with the aim of achieving plasmon enhanced photon harvesting. We report on a novel approach for
the physical synthesis of laterally ordered arrays of noble metal nanowires supported on transparent substrates (glass
slides) which provides a viable alternative to time consuming serial nanopatterning approaches. The formation of
periodic metal nanostructures is induced by self-organized sputtering processes of glass substrates followed by
glancing angle metal deposition and agglomeration into the troughs. The nanowire arrays exhibit a tunable broadband
plasmonic response which matches the solar spectrum for optimal PV conversion.
Epitaxial Rare-Earth Oxide Layers for Enhancement of Silicon Based Solar Cells
Creators: name: Sewell, R.H.
name: Clark, A.
name: Arkun, E.
name: Smith, R.S.
name: Semans, S.
name: Jamora, A.
name: Vosters, G.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
New Materials, Cells and Modules

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 326-331
description: Rare-earth oxide materials have been investigated for use as spectral conversion elements for
monolithic integration into single crystal silicon solar cells. Gd2O3:Er and Gd2O3:Tb thin solid layers were deposited
on thin-film c-Si solar cells, for use as upconverting and downshifting layers, respectively. Photoluminescence from
Gd2O3:Er shows upconversion of 1480nm light to 980nm, and concentration quenching of the luminescence for Er
doping above 10%. The direct deposition of the rare-earth oxide layer allows for a modulated Er doping profile,
which has been used to suppress concentration quenching. Thin layers of Er doped Gd2O3 were grown within undoped
Gd2O3 layers to confine resonant energy transfer to two dimensions, and thus improve luminescence
efficiency. Taking into account the optical standing wave in the layers, when the active Gd2O3:Er layer is less that
130nm thick, we see an improvement in the photoluminescence per Er ion. With these layers integrated into silicon
solar cell devices, a similar increase in short circuit current is measured for thin doped layers when excited with
1480nm radiation. Gd2O3:Tb,Yb layers were produced as candidates for quantum cutting material. Downshifting
from 488nm was observed, however no emission from the 980nm Yb level was observed. All rare-earth oxide layers
have been shown to be stable through solar cell processing steps.
Electrospun highly corrosion-resistant polystyrene–nickel oxide superhydrophobic nanocomposite coating
Creators: name: Bahgat Radwan, A.
name: Mannah, Cheirva A.
name: Sliem, Mostafa H.
name: Al-Qahtani, Noora Hamad S.
name: Okonkwo, Paul C.
name: Berdimurodov, Elyor
name: Mohamed, Adel M.
name: Abdullah, Aboubakr M.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Macromolecular and materials chemistry
subject: Nanotechnology
subject: FOS: Nanotechnology

description: A key challenge in producing superhydrophobic coatings (SHC) is to tailor the surface morphology on the micro-nanometer scale. In this work, a feasible and straightforward route was employed to manufacture polystyrene/nickel oxide (PSN) nanocomposite superhydrophobic coatings on aluminum alloys to mitigate their corrosion in a saline environment. Different techniques were employed to explore the influence of the addition of NiO nanoparticles to the as-prepared coatings. PSN-2 composite with ~ 4.3 wt% of NiO exhibited the highest water contact angle (WCA) of 155° ± 2 and contact angle hysteresis (CAH) of 5°. Graphic abstract EIS Nyquist plots of 3 g of electrospun polystyrene coatings (a) without and with (b) 0.1, (c) 0.15, and (d) 0.2 g of NiO.Other Information Published in: Journal of Applied Electrochemistry
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10800-021-01603-8
External Quantum Efficiency Measurements of Luminescent Solar Concentrators: a Study of the Impact of Backside Reflector Size and Shape
Creators: name: Pravettoni, M.
name: Farrell, D.J.
name: Chatten, A.J.
name: Bose, R.
name: Kenny, R.P.
name: Barnham, K.W.J.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
New Materials, Cells and Modules

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 332-335
description: Several works have appeared in the literature as a result of the joint activity of Imperial College
London with the European Solar Test Installation and other European research centres on luminescent solar
concentrators: some have been specifically related to indoor and outdoor characterisation. Within the characterisation
processes, the external quantum efficiency is particularly important: by means of external quantum efficiency
measurements, spectral mismatch correction can be performed, enabling performance predictions for any given
irradiance conditions. In recent works an increase in module efficiency due to a diffusive reflector at the backside of
the concentrator has been shown. In this work we present recent results on the impact of a non-index-matched
backside diffusive reflector on the external quantum efficiency of a luminescent solar concentrator and therefore on
the short-circuit current of the device: the result is particularly relevant in view of using luminescent solar
concentrators in building integration of photovoltaics.
Online social transparency in enterprise information systems: a risk assessment method
Creators: name: Alsaedi, Tahani
name: Sherief, Nada
name: Phalp, Keith
name: Ali, Raian
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Business systems in context

description: Teleworking refers to the utilization of information and communication technologies for work done outside the workplace. The Covid-19 crisis led to increased utilisation of social networking tools within enterprises, especially when working remotely. The aim of their use is often to improve situational awareness, coordination, and collaboration amongst employees. Online social transparency, typically done through social networks or enterprise social software, refers to the voluntary sharing of personal and contextual information such as those relating to their own and team status, intentions, motivation, capabilities, goal priorities besides updates on the physical and social context, with other colleagues. An ad-hoc practice of social transparency can introduce risks such as information overload, social loafing and peer pressure. Despite recognising its adverse effects, there is a lack of systematic methods that identify and assess the risks of online social transparency. In this paper, we present a method to identify and evaluate these within enterprises. We present the method’s workflow, stakeholders, the novel artefacts and techniques devised to use and the outcomes to produce. We evaluate our proposed method by applying it in a real organisational context and assess applicability, efficiency, and effectiveness in identifying risks and supporting managers in risk assessment. The results showed that the method gives a framework of thinking and analysis and helps recognize and identify risks in a specialized manner.Other Information Published in: Information Technology and Management
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10799-021-00347-3
Practical Implementation of Grid Connected Energy Storage Sytems with Litium -Ion Battery: the Grow-Ders Project
Creators: name: Colin, H.
name: Le-Pivert, X.
name: Merten, J.
name: Barona, A.
name: Cousseau, J.F.
name: De Boer-Meulman, P.
name: Bloemhof, G.
name: Bozelie, J.
name: Dietschmann, H.
name: Kourtis, G.
name: Okasinski, M.
name: Raaijen, E.
Publisher: name: WIP-Munich
Year: 2009
Subjects: PV Systems
PV Power Plants

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 4150-4154
description: Development and use of Renewable Energy Sources is one of the key elements in European
Research. However connecting these sources to the electricity distribution networks causes significant
effects on the management of these networks. Bottlenecks are stability, security, peaks in supply &
demand and overall management.
Electricity storage systems provide means to overcome technical and economic hurdles for large-scale
introduction of PV and other distributed sustainable energy sources. The costs of different storage
technologies have dropped dramatically during the last years making introduction of storage systems
feasible. However, unfamiliarity with the techniques, lack of confidence and uncertainty with costs and
benefits cause very large inertia by end users (utilities, investors). Moreover, network components are
designed to be technical and economic effective for a (minimum) period of 40 years, causing conservative
behavior.
The latest up-to-date results of the laboratory tests of the first integrated system (Li-ion battery, inverter,
overall energy management system and the connection to the local distribution grid) are presented.
Do Social Media Marketing Activities Improve Brand Loyalty? An Empirical Study on Luxury Fashion Brands
Creators: name: Fetais, Abdulla H.
name: Algharabat, Raed S.
name: Aljafari, Abdullah
name: Rana, Nripendra P.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Information systems
Distributed computing and systems software

description: This research aims to investigate the impact of social media marketing activities (SMMa) on brand loyalty directly and through mediating variables community engagement and lovemark. To propose a research model, we used the theories including lovemark theory, engagement theory and brand equity theory. As a result, this research investigates the impact of SMMa, community engagement, and lovemark on brand loyalty. Using an online survey, we collected data from 464 female participants who are following luxury fashion brands on major social networking sites including Facebook, Instagram, Snapchat, and Twitter. Results using PLS revealed that SMMa positively influences community engagement and lovemark. Moreover, we find positive relationships between community engagement, lovemark and brand loyalty. However, we find that SMMa has no direct influence on brand loyalty.Other Information Published in: Information Systems Frontiers
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10796-022-10264-7
Assessing Organizational Users’ Intentions and Behavior to AI Integrated CRM Systems: a Meta-UTAUT Approach
Creators: name: Chatterjee, Sheshadri
name: Rana, Nripendra P.
name: Khorana, Sangeeta
name: Mikalef, Patrick
name: Sharma, Anuj
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Information systems
Distributed computing and systems software

description: This paper tests the meta-analysis based unified theory of acceptance and use of technology (meta-UTAUT) model to predict the behavioral intentions of organizational users and their use behavior to artificial intelligence (AI) integrated customer relationship management (CRM) systems. Data was collected from 315 organizational users in India. The hypotheses draw on the theoretical underpinnings which have been statistically validated. Results show that CRM quality and satisfaction significantly influences an organization’s employees attitudes and intentions to use AI integrated CRM systems. The compatibility of CRM systems has, however, a limited impact on employees attitudes. The findings, which are aligned with the extended UTAUT model, provide useful insights into organizations and decision-makers for designing AI integrated CRM systems.Other Information Published in: Information Systems Frontiers
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10796-021-10181-1
Is There a Place for Responsible Artificial Intelligence in Pandemics? A Tale of Two Countries
Creators: name: El-Haddadeh, Ramzi
name: Fadlalla, Adam
name: Hindi, Nitham M.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Information systems
Distributed computing and systems software

description: This research examines the considerations of responsible Artificial Intelligence in the deployment of AI-based COVID-19 digital proximity tracking and tracing applications in two countries; the State of Qatar and the United Kingdom. Based on the alignment level analysis with the Good AI Society’s framework and sentiment analysis of official tweets, the diagnostic analysis resulted in contrastive findings for the two applications. While the application EHTERAZ (Arabic for precaution) in Qatar has fallen short in adhering to the responsible AI requirements, it has contributed significantly to controlling the pandemic. On the other hand, the UK’s NHS COVID-19 application has exhibited limited success in fighting the virus despite relatively abiding by these requirements. This underlines the need for obtaining a practical and contextual view for a comprehensive discourse on responsible AI in healthcare. Thereby offering necessary guidance for striking a balance between responsible AI requirements and managing pressures towards fighting the pandemic.Other Information Published in: Information Systems Frontiers
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10796-021-10140-w
The role of helicity in triad interactions in 3D turbulence investigated in a new shell model
Creators: name: Rathmann, Nicholas M.
name: Ditlevsen, Peter D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Fully developed homogeneous isotropic turbulence in 2D is fundamentally different from 3D. In 2D, the simultaneous conservation of both energy and enstrophy in the inertial ranges of scales leads to a forward cascade of enstrophy and a reverse cascade of energy. In 3D, helicity, the integral of the scalar product of velocity and vorticity, is also an inviscid flow invariant along with kinetic energy. Unlike enstrophy, however, helicity does not block the cascade of energy to small scales. Energy and helicity are not only globally conserved but also conserved within each non-linear triadic interaction between three plane waves in the spectral form of the Navier--Stokes equation (NSE). By decomposing each plane wave into two helical modes of opposite helicities each triadic interaction is split into a set of eight triadic interactions between helical modes (Waleffe 1992). Biferale et al. (2012) recently found that a subset of these interactions which render both signs of helicity separately conserved (i.e. enstrophy-like) leads to an inverse cascade of (part of) the energy. Motivated by this finding we introduce a new shell model obtained from the NSE expressed in the helical basis (Waleffe 1992). By analysing and integrating the new model we attempt to explain why the dual forward cascade of energy and helicity dominates in 3D turbulence.
description: 12 pages, 6 figures
Time and Temperature Dependence of the Solubility of Carbon in Liquid Silicon
Creators: name: Dalaker, H.
name: Tangstad, M.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1250-1252
description: The time and temperature dependence of carbon in liquid silicon equilibrated with silicon carbide have been determined through a direct experimental investigation. No time dependence in the solubility levels could be detected, and it is concluded that the establishment of equilibrium is very rapid. The temperature dependence of the solubility was found to follow CC(T)=8.394·106exp(-19856/T). At the melting point of silicon, the solubility of carbon in liquid silicon was determined to 65 ppm mass. Using the found solubility data, the expression for the temperature dependence of the dissolution energy of carbon was calculated to G=5.2·104- 11.4TlogT+19.7T, giving 23.2kJ/mol at the melting point of silicon.