cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Epitaxy and Characterization of InP/InGaAs Tandem Solar Cells grown by MOVPE on InP and Si Substrates
Creators: name: Soresi, S.
name: Da Lisca, M.
name: Besancon, C.
name: Vaissiere, N.
name: Larrue, A.
name: Calo, C.
name: Alvarez, J.
name: Longeaud, C.
name: Largeau, L.
name: Garcia-Linares, P.
name: Tournié, E.
name: Kleider, J.P.
name: Decobert, J.
Publisher: name: WIP
Year: 2022
Subjects: Evolving and Emerging Technologies: Tandems; Thin Film absorbers; III-V; New Materials and Concepts; Advanced Modelling
III-V and Related Compound Semiconductors

description: 8th World Conference on Photovoltaic Energy Conversion; 378-383
description: The integration of III-V multi-junction solar cells on Si substrates is one of the most encouraging prospects to combine high photovoltaic performance with a reduction of the manufacturing costs. We propose a prospective study for the realization of an InP/InGaAs tandem solar cell lattice-matched to InP on a commercially available Si template by direct MOVPE growth. The InP top cell and the InGaAs bottom cell were firstly separately grown and optimized using InP substrates, which exhibited conversion efficiencies of 13.5% and 11.4%, respectively. The two devices were then combined in a tandem device by introducing an intermediate InP/AlInAs lattice-matched tunnel junction, showing an efficiency of 18.4%. As an intermediate step towards the realization of the tandem device on Si, the InP and InGaAs single junction solar cells were grown on top of a commercial InP/GaP/Si template. Each cell was electrically characterized by external quantum efficiency and illuminated current-voltage under solar simulator: efficiencies of 3.6% and 2.0% for the InP and InGaAs solar cells were obtained, respectively. The material quality was also analyzed by means of X-ray diffraction, Atomic-Force Microscopy, Transmission Electron and Scanning Electron Microscopy.
Deliverlable 6.3: Damaged Product Circularity Assessment Tool Overview and   Technical Description
Creators: name: Elisa, Ionascu
name: Diana, Antonescu
name: Dorin, Guinea
name: Dana, Oniga
Publisher: name: Zenodo
Year: 2024

description: Linked to T6.3 Provides the Damaged product circularity assessment tool overview and technical description for the CircThread projects including as outcomes: a description of the service including its objectives, features, end users, benefits, and use scenarios in relation to the CircThread use cases, a technical description of the services at present and their TRL positioning and advancements during the project, a description of the software implementation.
Improvement of InGaP Solar Cells Grown with TBP in Planetary MOVPE Reactor
Creators: name: Sodabanlu, H.
name: Li, G.
name: Watanabe, K.
name: Nakano, Y.
name: Sugiyama, M.
Publisher: name: WIP
Year: 2022
Subjects: Evolving and Emerging Technologies: Tandems; Thin Film absorbers; III-V; New Materials and Concepts; Advanced Modelling
III-V and Related Compound Semiconductors

description: 8th World Conference on Photovoltaic Energy Conversion; 384-387
description: The carrier lifetime in unintentionally doped InGaP was significantly deteriorated with an increase in growth (surface) temperature from 560 to 590 °C. With a temperature higher than 600 °C, the growth of InGaP was failed with extremely rough surface morphology. Meanwhile, a larger amount of H2 carrier gas led to a faster TBP flow velocity and an improvement of InGaP surface roughness. These results suggested that, due to fast TBP decomposition processes, the depletion of TBP and insufficient P partial pressure for surface chemical reactions were major problematic issues for the growth of P-related materials in a large planetary MOVPE reactor. The quality of p-type InGaP grown in this reactor with TBP was not as good as that of n-type InGaP indicated by Hall mobility. In this work, InGaP rear homo junction (RJ) and rear hetero junction (RHJ) solar cells utilizing of thick n-InGaP layers exhibited much better photo-carrier collection and performance than the traditional n-on-p solar cell comprising of a thick pInGaP base layer. Moreover, the quality of InGaP was enhanced by the mis-orientation of GaAs (001) toward (111)A, while InGaP grown on GaAs (001) with a mis-cut toward (111)B showed worse results in term of carrier lifetime and solar cell performance.
Implication of Logistics Service Quality on Customer Satisfaction: the Case of Jumia Online Market
Creators: name: Alemu, Hana
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: he main purpose of this study is to investigate the implication of logistics service quality dimensions on customer satisfaction. In addition it measures customer satisfaction level and the logistics service quality of Jumia online Market. The seven dimensions of logistics service quality model i.e. information quality, order procedure, timeliness, order condition, order accuracy, order discrepancy handling and personnel contact quality were used to measure the logistics service quality of Jumia online market. In order to answer the raised research questions, both primary and secondary sources of data were used. The primary data was collected through administrating questionnaire. A combination of purposive and convenient sampling technique was used to obtain 96 responses from customers of Jumia online market who had made purchases recently. Correlation analyses were used to investigate the relationship between dependent and independent variables. Regarding the satisfaction level measurement, 52.7% of respondents are satisfied and 28.6% are highly satisfied with the logistics service provided by Jumia online market. The correlation results indicate that there is a positive correlation between the dimensions of logistics service quality and customer satisfaction. The research showed that timeliness and order procedure plays the most important role in customer satisfaction level followed by Order accuracy, Information quality, Order discrepancy handling, Order condition and Personnel contact quality respectively. From the seven logistics service quality dimensions, timeliness is the least scored one on the perception measurement. Jumia online market should give focus to improve logistics service quality items of this specific dimension by enforcing seller to make a commitment on availing the orders as soon as they are placed, to make time gap between order placement and receipt shorter, and continuous follow up of delivery partners is mandatory as it has significant impact on delivering products on the promised date. Key Words: Customer Satisfaction, Logistics Service Quality, Online market
Continuum Eigenmodes in Some Linear Stellar Models
Creators: name: Winfield, Christopher J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences
subject: 47N50, 85-08, 85-A30

description: We apply parallel approaches in the study of continuous spectra to adiabatic stellar models. We seek continuum eigenmodes for the LAWE formulated as both finite difference and linear differential equations. In particular, we apply methods of Jacobi matrices and methods of subordinancy theory in these respective formulations. We find certain pressure-density conditions which admit positive-measured sets of continuous oscillation spectra under plausible conditions on density and pressure. We arrive at results of unbounded oscillations and computational or, perhaps, dynamic instability.
3. Festival der Philosophie 2012: „Wieviel Vernunft braucht der Mensch?“ : Festival Finale Dialog-Konzert im NDR: Prof. Dr. Erika Schuchardt mit dem Szymanowski – Quartett: „Musik ist höhere Offenbarung als alle Weisheit und Philosophie“, Ludwig van Beethoven, Streichquartett a-Moll, op. 132, „Heiliger Dankgesang eines Genesenen an die Gottheit in lydischer Tonart“
Creators: name: Schuchardt, Erika
Publisher: name: [k.A.]
Year: 2012
Subjects: subject: Dewey Decimal Classification::100 | Philosophie

description: 3. Festival der Philosophie 2012: „Wieviel Vernunft braucht der Mensch?“ Festival Finale Dialog-Konzert im NDR: Prof. Dr. Erika Schuchardt mit dem Szymanowski – Quartett: „Musik ist höhere Offenbarung als alle Weisheit und Philosophie“, Ludwig van Beethoven, Streichquartett a-Moll, op. 132, „Heiliger Dankgesang eines Genesenen an die Gottheit in lydischer Tonart“ Übersetzung ins Polnische i.V.
Forming an Earth First! group
Creators: name: Solo, El Lobo
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Anarchists
valueUri: http://id.worldcat.org/fast/808401
subject: Earth First! (Organization)
valueUri: http://id.worldcat.org/fast/643811
subject: Anarchism
valueUri: http://id.worldcat.org/fast/808387
subject: Social groups
valueUri: http://id.worldcat.org/fast/1122482
subject: Deep ecology
valueUri: http://id.worldcat.org/fast/889494
subject: Environmentalism
valueUri: http://id.worldcat.org/fast/913543
subject: Anarchism--Societies, etc.
valueUri: http://id.worldcat.org/fast/808396

description: Gives a brief outline of Earth First! and details on how to set up a local group.
Optimization and Characterization of Indium Zinc Oxide TCOs for Perovskite-Silicon Tandem Solar Cell Applications
Creators: name: Sittinger, V.
name: King, H.
name: Kabakli, Ö.S.
name: Schulze, P.S.C.
name: Goldschmidt, J.C.
Publisher: name: WIP
Year: 2022
Subjects: Evolving and Emerging Technologies: Tandems; Thin Film absorbers; III-V; New Materials and Concepts; Advanced Modelling
Tandems

description: 8th World Conference on Photovoltaic Energy Conversion; 366-368
description: This work details the development and optimization of indium zinc oxide (IZO) as top transparent conductive oxide (TCO) for use in perovskite-silicon tandem solar cells, focusing on the determination of application-specific ideal film stoichiometry. The indium zinc oxide films were produced by means of a serial reactive co-sputtering process with a zinc planar target and an indium rotatable target. The indium was sputtered with argon as sputter gas, and oxygen as reactive gas. The IZO films were optimized for conductivity, carrier mobility and absorption. The measured absorption of the films was weighted with global standard spectral data (AM1.5G) in order to more closely mimic the effect of absorption on the resulting solar cell efficiency. Based on previous work, a process window varying Zn target power (100 – 140 W) and oxygen flow rate (30 – 34 sccm, influencing total process pressure, and In target power at constant O2 partial pressures) was selected. The optimized IZO films were then deposited onto perovskite-silicon tandem cells where the power conversion efficiencies (PCE), short-circuit current densities (Jsc), open-circuit voltages (Voc), and fill factors (FF) were characterized and compared with tandem cells with a reference ITO as top TCO. The best performing cells showed a PCE of 25.8 %, with process parameters corresponding to 34 sccm O2 flow, and 100 W Zn target power.
The politics of YouTube: Italian fascism explained by the algorithm
Creators: name: Valenti, Anna
Publisher: name: Zenodo
Year: 2024

description: This report explores how YouTube's recommendation algorithms frame and potentially radicalize content related to Italian fascism. Focusing on the 2022 Italian elections and the rise of Giorgia Meloni, the research analyzes how searches for "fascism in Italy" in both English and Italian lead users toward more extreme or partisan content. The report highlights the role of algorithms in shaping public perception and reinforcing political polarization, revealing how users are often guided into "radical bubbles" with limited exposure to alternative viewpoints.
Analytic aspects of the Tzitzéica equation: blow-up analysis and existence results
Creators: name: Jevnikar, Aleks
name: Yang, Wen
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J61, 35J20, 35R01, 35B44

description: We are concerned with the following class of equations with exponential nonlinearities: $$ Δu+h_1e^u-h_2e^{-2u}=0 \qquad \mbox{in } B_1\subset\mathbb{R}^2, $$ which is related to the Tzitzéica equation. Here $h_1, h_2$ are two smooth positive functions. The purpose of the paper is to initiate the analytical study of the above equation and to give a quite complete picture both for what concerns the blow-up phenomena and the existence issue. In the first part of the paper we provide a quantization of local blow-up masses associated to a blowing-up sequence of solutions. Next we exclude the presence of blow-up points on the boundary under the Dirichlet boundary conditions. In the second part of the paper we consider the Tzitzéica equation on compact surfaces: we start by proving a sharp Moser-Trudinger inequality related to this problem. Finally, we give a general existence result.
War Diary of 1st Battalion Canadian Scottish Regiment - Miscellaneous Appendix
Creators: name: Canada. Canadian Army. Canadian Scottish Regiment (Princess Mary's)
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Canada. Canadian Army
valueUri: http://id.worldcat.org/fast/531187
subject: Canada. Canadian Army. Canadian Scottish Regiment (Princess Mary's)
subject: World War (1939-1945)
valueUri: http://id.worldcat.org/fast/1180924
subject: War diaries
valueUri: http://id.worldcat.org/fast/1745536

description: This appendix consists of a document describing the program of the National Curch of Germany (Reichskirgie) during the war.
Assessment of outsourcing practices in commercial bank of Ethiopia and development bank of Ethiopia in Addis Ababa
Creators: name: Tsega, Taye
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: This study assessed the status of outsourcing services in government owned banks in Addis Ababa. The population for the study was the staff of senior and above senior level officers and managers of both banks: West district of CBE and head office of DBE were selected for the study. A simple random sampling was used to select the respondents for the questionnaires and a purposive sampling technique was used as well to select managers of the banks for the interview. The study used both primary and secondary data. The study brings out that the banks had outsourced the non-core activities of security, messenger, cleaning and lobby person services. These services have been given on a contract basis on a long term partnership. These banks have different motives to outsource these services. As the data gathered shows that some of the reasons are cost reduction, to save time, to enable flexible utilization of resources, take advantage of expertise and others. According to the responses, it was understood that the majority of the respondents agreed on the terms of outsourcing the major four services (security, messenger, cleaning and lobby person) had helped the banks in improving the performance of the banks and employees, enable them to have higher market share, reduce cost, focus on core functions and saves time of the managements. The major challenges associated with it was employee's lack of belongingness to the banks, lack of commitment, less service quality, threat to security and confidentiality, some hidden cost associated with it and less managerial control. So it was recommended that the bank's management must strongly take in to account how the assigned employees are treated at their respective branches so that they can improve their belongingness and commitment to the banks. Also the banks must aware managers at different levels about outsourcing. It was also recommended that as the service provider company (CN) is owned by CBE itself, the bank must strengthen the company at training and development and quality service aspects. The government also must strengthen outsourcing non-core functions as a good business strategy.
AlGaAs/InGaP Heterojunction Solar Cell Based on Temperature-Graded Growth
Creators: name: LI, G.
name: Sodabanlu, H.
name: Watanabe, K.
name: Sugiyama, M.
name: Nakano, Y.
Publisher: name: WIP
Year: 2022
Subjects: Evolving and Emerging Technologies: Tandems; Thin Film absorbers; III-V; New Materials and Concepts; Advanced Modelling
III-V and Related Compound Semiconductors

description: 8th World Conference on Photovoltaic Energy Conversion; 369-372
description: In this study, a temperature-graded growth layer (TGL) is newly introduced to achieve continuous growth between AlGaAs and InGaP grew at 700ºC and 560ºC, respectively. It is observed that the deterioration of Voc is successfully mitigated after this grading layer is applied. Absolute electroluminescence and atomic force microscopy measurements are further performed to confirm an enhanced ERE and improved interface topography, indicating that the TGL can effectively suppress oxygen incorporation at AlGaAs/InGaP heterojunction, thereby improving the smoothness of the epitaxial layer, which in turn prohibits nonradiative recombination. In all, the TGL is verified to enhance the quality of AlGaAs/InGaP heterojunction solar cells and may serve as a general routine for AlGaAs-based heterogeneous growth with metal-organic vapor phase epitaxy (MOVPE).
Roadless space is greatly diminished by logging in intact forest landscapes of the Congo Basin
Creators: name: Kleinschroth, Fritz
name: Healey, John R.
name: Gourlet-Fleury, Sylvie
name: Mortier, Frederic
name: Stoica, Radu S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Other Quantitative Biology (q-bio.OT)
subject: FOS: Biological sciences

description: Forest degradation in the tropics is often associated with roads built for selective logging. The protection of Intact Forest Landscapes (IFL) that are not accessible by roads is high on the biodiversity conservation agenda, a challenge for logging concessions certified by the Forest Stewardship Council (FSC). A frequently advocated conservation objective is to maximise the retention of "roadless space", a concept that is based on distance to the nearest road from any point. We developed a novel use of the empty space function - a general statistical tool based on stochastic geometry and random sets theory - to calculate roadless space in a part of the Congo Basin where there has recently been rapid expansion of road networks. We compared the temporal development of roadless space in certified and non-certified logging concessions inside and outside areas declared as IFL in the year 2000. Between 1999 and 2007, rapid road network expansion led to a marked loss of roadless space in IFL. After 2007, this trajectory levelled out in most areas, due to an equilibrium between newly built roads and abandoned roads that became revegetated. However, concessions within IFL that have been certified by FSC since around 2007 showed continued decreases in roadless space, thus reaching a level comparable to all other concessions. Only national parks remained road-free. We recommend that forest management policies make the preservation of large connected forest areas a top priority by effectively monitoring - and limiting - the occupation of space by roads that are permanently accessible.
Quartz-superconductor quantum electromechanical system
Creators: name: Woolley, M. J.
name: Emzir, M. F.
name: Milburn, G. J.
name: Jerger, M.
name: Goryachev, M.
name: Tobar, M. E.
name: Fedorov, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose and analyse a quantum electromechanical system composed of a monolithic quartz bulk acoustic wave (BAW) oscillator coupled to a superconducting transmon qubit via an intermediate LC electrical circuit. Monolithic quartz oscillators offer unprecedentedly high effective masses and quality factors for the investigation of mechanical oscillators in the quantum regime. Ground-state cooling of such mechanical modes via resonant piezoelectric coupling to an LC circuit, which is itself sideband cooled via coupling to a transmon qubit, is shown to be feasible. The fluorescence spectrum of the qubit, containing motional sideband contributions due to the couplings to the oscillator modes, is obtained and the imprint of the electromechanical steady-state on the spectrum is determined. This allows the qubit to function both as a cooling resource for, and transducer of, the mechanical oscillator. The results described are relevant to any hybrid quantum system composed of a qubit coupled to two (coupled or uncoupled) thermal oscillator modes.
description: 19 pages, 3 figures
Applying GaAsP with Ultra-High Phosphorous Composition to InGaAs/GaAsP Strain-Balanced Quantum Structure Solar Cells to Achieve High-efficiency Multi-junction Solar Cells
Creators: name: Asami, M.
name: Watanabe, K.
name: Nakano, Y.
name: Sugiyama, M.
Publisher: name: WIP
Year: 2022
Subjects: Evolving and Emerging Technologies: Tandems; Thin Film absorbers; III-V; New Materials and Concepts; Advanced Modelling
III-V and Related Compound Semiconductors

description: 8th World Conference on Photovoltaic Energy Conversion; 373-377
description: This study was aimed at determining a suitable strain-balanced quantum structure to further improve the energy conversion efficiency of conventional Ge-based lattice-matched triple-junction solar cells. We investigated the voltage losses in several types of quantum-structure solar cells using the detailed balance theory and optoelectronic reciprocity relation. Based on the voltage loss analysis, we found that the combination of thick InGaAs quantum well layers and thin GaAsP layers was suitable for high-performance quantum-structured solar cells. To maintain the strain-balance condition for a quantum structure with thick InGaAs, we proposed the use of ultrahigh phosphorous composition GaAsP quantum barrier layers. The results of this study are significant for the design of future quantum-structure solar cells.
Application of Advanced Hydrogenation Process on SiGe/Si Solar Cells
Creators: name: Sun, Z.
name: Lei, F.
name: Zhang, S.
name: Hallam, B.
name: Wang, L.
Publisher: name: WIP
Year: 2022
Subjects: Evolving and Emerging Technologies: Tandems; Thin Film absorbers; III-V; New Materials and Concepts; Advanced Modelling
Tandems

description: 8th World Conference on Photovoltaic Energy Conversion; 358-361
description: The lattice mismatch is a significant issue for monolithic III-V/Si tandem solar cells due to the creation of islanding and misfit dislocations at the interface. Si1-xGex buffer layers have demonstrated promising results in mitigating the lattice-mismatch between III-V and Si materials. However, dangling bonds and dislocations can still exist among the Si1-xGex buffer layers, causing significant recombination losses. Herein, we apply an advanced hydrogenation process on Si1-xGex cells grown on Si with Si1-xGex graded buffer layers in between, aiming to reduce the buffer layer and base region defects, hence improving the cell’s performance. SiNx through PECVD has been applied as both a hydrogen source and an anti-reflection coating on SiGe/Si cells with four different Ge concentrations (i.e., 78%, 82%, 85% and 88%). After accumulated laser treatment of 30 seconds, Voc and efficiency of SiGe cells (78%, 82% and 85% Ge) have been improved by 2-4%REL (equivalent to 6-12 mV) and 5-17%REL, respectively. These results demonstrate the effectiveness of hydrogenation passivation on Si1-xGex buffer layers and SiGe base defects, also indicating opportunities for broad applications of the advanced hydrogenation technique on other tandem structures.
Earth First! ! Membership Application
Creators: name: Earth First! (Organization)
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Anarchists
valueUri: http://id.worldcat.org/fast/808401
subject: Earth First! (Organization)
valueUri: http://id.worldcat.org/fast/643811
subject: Anarchism
valueUri: http://id.worldcat.org/fast/808387
subject: Social groups
valueUri: http://id.worldcat.org/fast/1122482
subject: Environmentalism
valueUri: http://id.worldcat.org/fast/913543
subject: Anarchism--Societies, etc.
valueUri: http://id.worldcat.org/fast/808396

description: A blank membership application to join Earth First! with a map of the six major Earth First! bioregions.
Near-Infrared Light Management in Silicon Heterojunction Solar Cells for Silicon-Based III–V Multijunction Tandem Cell Applications
Creators: name: Lee, H.
name: Nishihara, T.
name: Ohshita, Y.
name: Ogura, A.
Publisher: name: WIP
Year: 2022
Subjects: Evolving and Emerging Technologies: Tandems; Thin Film absorbers; III-V; New Materials and Concepts; Advanced Modelling
Tandems

description: 8th World Conference on Photovoltaic Energy Conversion; 362-365
description: The silicon heterojunction (SHJ) cell technology dominates in Si-based tandem cell research, and also the world record Si-based III–V multijunction tandem cell is based on SHJ bottom cells. Despite this exciting performance, the tandem cell was still limited by the SHJ bottom-cell photocurrent. The limited photocurrent is owing to significant losses in the near-infrared (NIR) part of the spectrum on the rear side of SHJ bottom cells. This contribution demonstrates an improved NIR response of the tungsten-doped indium oxide (IWO)/Ag rear contact of rear-junction SHJ solar cells. The carrier concentration and the thickness of the rear IWO layer are optimized in order to minimize the free-carrier and the plasmonic absorption losses without detrimentally affecting the selectivity and the electrical transport properties of SHJ solar cells. The NIR light reflectance of rear IWO/Ag reflectors are shown to be significantly impacted by the carrier concentration of IWO layers within the investigated ranges. As a result of these optimizations, a significant decrease of the parasitic absorption loss in the NIR part of the spectrum is achieved, leading to a champion device with a short-circuit current density of up to 40.8 mA/cm2 and an efficiency of 22.4%.
A Study of the Role of the Annealing Temperatures and Times on Cu2ZnSnS4 Nanocrystal Thin Films Properties
Creators: name: Alluhaybi, A.
name: Halliday, D.
name: Szablewski, M.
Publisher: name: WIP
Year: 2022
Subjects: Evolving and Emerging Technologies: Tandems; Thin Film absorbers; III-V; New Materials and Concepts; Advanced Modelling
CI(G)S, CdTe and Related Thin Films; Organic and Dye-Sensitised Devices

description: 8th World Conference on Photovoltaic Energy Conversion; 346-350
description: Cu2ZnSnS4 (CZTS) nanoparticle thin films were produced by hot-injection spin-coating technique, and successfully deposited on soda lime glass substrates (SLG). The impact of different annealing temperatures and annealing times were investigated by using X-ray diffraction (XRD), Focus Ion Beam Microscopy (FIB), Energy-dispersive X-ray spectroscopy (EDS), Raman spectroscopy and Ultraviolet-visible spectroscopy (UV-vis). The XRD measurements confirmed the formation of kesterite structure in the CZTS thin films. From the optical properties, the films demonstrate improvement in uniformity and crystallinity of CZTS with annealing. This study shows that annealing conditions of 585 °C in a N2 and H2S environment for one hour is suitable step to produce CZTS absorber layers for successful CZTS solar cell device fabrication.
Quantal rotation and its coupling to intrinsic motion in nuclei
Creators: name: Nakatsukasa, Takashi
name: Matsuyanagi, Kenichi
name: Matsuzaki, Masayuki
name: Shimizu, Yoshifumi R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Symmetry breaking is an importance concept in nuclear physics and other fields of physics. Self-consistent coupling between the mean-field potential and the single-particle motion is a key ingredient in the unified model of Bohr and Mottelson, which could lead to a deformed nucleus as a consequence of spontaneous breaking of the rotational symmetry. Some remarks on the finite-size quantum effects are given. In finite nuclei, the deformation inevitably introduces the rotation as a symmetry-restoring collective motion (Anderson-Nambu-Goldstone mode), and the rotation affects the intrinsic motion. In order to investigate the interplay between the rotational and intrinsic motions in a variety of collective phenomena, we use the cranking prescription together with the quasiparticle random phase approximation. At low spin, the coupling effect can be seen in the generalized intensity relation. A feasible quantization of the cranking model is presented, which provides a microscopic approach to the higher-order intensity relation. At high spin, the semiclassical cranking prescription works well. We discuss properties of collective vibrational motions under rapid rotation and/or large deformation. The superdeformed shell structure plays a key role in emergence of a new soft mode which could lead to instability toward the $K^π=1^-$ octupole shape. A wobbling mode of excitation, which is a clear signature of the triviality, is discussed in terms of a microscopic point of view. A crucial role played by the quasiparticle alignment is presented.
description: 38 pages, 11 figures, Contribution to the Focus issue to celebrate the 40 year anniversary of the 1975 Nobel Prize
Pressure-aided Growth Approach of Highly Efficient Tandem Perovskite Solar Cell via Sandwich Evaporation Technique
Creators: name: Jhou, J.C.
name: Chang, C.H.
name: Gaurav, A.
name: Hsin-Ting, L.
name: Lin, C.F.
Publisher: name: WIP
Year: 2022
Subjects: Evolving and Emerging Technologies: Tandems; Thin Film absorbers; III-V; New Materials and Concepts; Advanced Modelling
Tandems

description: 8th World Conference on Photovoltaic Energy Conversion; 351-353
description: The perovskite layer was fabricated using sandwich structure principle. Initially, 1st layer (MAI) was spin-coated and PbI2 as 2nd layer was thermally evaporated. MAI was evaporated at low pressure by sandwich evaporation technique (SET) using double inter-diffusion step to make the perovskite react completely. Changing the pressure flow of the growth chamber can result in different physical and electrical properties of the formed film. SET chamber pressure was varied to study the effect of pressure change on the surface morphology and electrical properties of the perovskite film. At pressure 3 torr, the semitransparent perovskite solar cell (ST-PSC) showed the higher efficiency of 15.03%. Finally, four terminal (4T) tandem configuration was established having a power conversion efficiency (PCE) of 22.35%.
The Impact of Corporate Governance on the organizational Performance of Bank of Abyssinia
Creators: name: Kirubel, Minichil
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: Corporate governance is an important factor for well-functioning of firms. Given the importance of banks, their governance assumes a central role. This paper looked at the effects corporate governance has on organizational performance in Bank of Abyssinia. The study was guided by the following specific objectives; effect of transparency on organizational performance; contribution of accountability on organizational performance; and effect of board composition on organizational performance at Bank of Abyssinia. Six years data for the period 2013-2018 was used for the study. Audited annual reports and questionnaires were also used to collect data to determine causal link between the independent and dependent variables. The major findings of the study revealed that, there is a significant relationship between transparency and organizational performance and transparency was a predictor of bank performance. Likewise, a significant relationship was observed between accountability and organizational performance where accountability was seen to be a predictor of bank performance. Further still, the relationship between board composition and organizational performance showed a significant relationship. In conclusion, transparency, accountability and board composition as dimensions of corporate governance, determine organizational performance at Bank of Abyssinia. Future researchers need to focus on these significant variables and additional corporate governance mechanisms.
Direct Action! 101 : a primer...
Creators: name: Solo, El Lobo
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Anarchists
valueUri: http://id.worldcat.org/fast/808401
subject: Earth First! (Organization)
valueUri: http://id.worldcat.org/fast/643811
subject: Civil disobedience
valueUri: http://id.worldcat.org/fast/862481
subject: Anarchism
valueUri: http://id.worldcat.org/fast/808387
subject: Social groups
valueUri: http://id.worldcat.org/fast/1122482
subject: Demonstrations
valueUri: http://id.worldcat.org/fast/890222
subject: Deep ecology
valueUri: http://id.worldcat.org/fast/889494
subject: Anarchism--Periodicals
valueUri: http://id.worldcat.org/fast/808394
subject: Passive resistance
valueUri: http://id.worldcat.org/fast/1054436
subject: Environmentalism
valueUri: http://id.worldcat.org/fast/913543
subject: Anarchism--Societies, etc.
valueUri: http://id.worldcat.org/fast/808396
subject: Nonviolence
valueUri: http://id.worldcat.org/fast/1039027
subject: Direct action
valueUri: http://id.worldcat.org/fast/894518

description: An outline of how direct action is used by Earth First!
Employees' Perception on the Effects of Supply Chain Management Strategy on firm Performance (The Case of MOHA Soft Drinks Industry S.C. Addis Ababa)
Creators: name: Gebreyesus, Natnael
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: Effective supply chain management (SCM) has become a potentially valuable way of securing competitive advantage through enhancing SC and improving organizational performances since competition is no longer between organizations, but among supply chains. This research conceptualizes and develops on five building blocks of SCM strategy (Manufacturing strategy, Outsourcing strategy, Channel Strategy, Customer service strategy and Asset network) and tests the employee prospect on effects of SCM Strategy on SC performance, and organizational performance. The data for the study was collected from 81 employees of MOHA soft drinks industry S.C. The relationships proposed in the framework were tested using Pearson correlation, and the causal relations were analyzed using regression analysis. From the result of the analysis it is concluded that there is strong relationship between SCM strategy, SC performance and organizational performance. Besides, SCM Strategy has an influence both on SC performance and organizational performance. On the other hand, SC performance has also an influence on organizational performance. Therefore, in order to achieve advancement in market share and profitability in the long-run through enhancing organizational performance, it is better for the organization to give due emphasis to the constructs of SCM Strategy and the measures of SC performance. Keyword: supply chain management Strategy, Supply Chain performance, Organizational performance
Incorporating Prior Knowledge for Quantifying and Reducing Model-Form Uncertainty in RANS Simulations
Creators: name: Wang, Jian-Xun
name: Wu, Jin-Long
name: Xiao, Heng
Publisher: name: arXiv
Year: 2015
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Simulations based on Reynolds-Averaged Navier--Stokes (RANS) models have been used to support high-consequence decisions related to turbulent flows. Apart from the deterministic model predictions, the decision makers are often equally concerned about the predictions confidence. Among the uncertainties in RANS simulations, the model-form uncertainty is an important or even a dominant source. Therefore, quantifying and reducing the model-form uncertainties in RANS simulations are of critical importance to make risk-informed decisions. Researchers in statistics communities have made efforts on this issue by considering numerical models as black boxes. However, this physics-neutral approach is not a most efficient use of data, and is not practical for most engineering problems. Recently, we proposed an open-box, Bayesian framework for quantifying and reducing model-form uncertainties in RANS simulations by incorporating observation data and physics-prior knowledge. It can incorporate the information from the vast body of existing empirical knowledge with mathematical rigor, which enables a more efficient usage of data. In this work, we examine the merits of incorporating various types of prior knowledge in the uncertainties quantification and reduction in RANS simulations. The result demonstrates that informative physics-based prior plays an important role in improving the quantification of model-form uncertainties, particularly when the observation data are limited. Moreover, it suggests that the proposed Bayesian framework is an effective way to incorporate empirical knowledge from various sources.
Analytical and Numerical Study of Gauss-Bonnet Holographic Superconductors with Power-Maxwell Field
Creators: name: Sheykhi, Ahmad
name: Salahi, Hamid Reza
name: Montakhab, Afshin
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We provide an analytical as well as a numerical study of the holographic $s$-wave superconductors in Gauss-Bonnet gravity with Power-Maxwell electrodynamics. We limit our study to the case where scalar and gauge fields do not have an effect on the background metric. We use a variational method, based on Sturm-Liouville eigenvalue problem for our analytical study, as well as a numerical shooting method in order to compare with our analytical results. Interestingly enough, we observe that unlike Born-Infeld-like nonlinear electrodynamics which decrease the critical temperature compared to the linear Maxwell field, the Power-Maxwell electrodynamics is able to increase the critical temperature of the holographic superconductors in the sublinear regime. We find that requiring the finite value for the gauge field on the asymptotic boundary $r\rightarrow \infty$, restricts the power parameter, $q$, of the Power-Maxwell field to be in the range $1/2
description: 16 pages, 5 figures
Design and Analysis of Novel Kernel Measure for Software Fault Localization
Creators: name: Radhakrishna, Vangipuram
Publisher: name: arXiv
Year: 2016
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences
subject: D.2.5

description: The problem of software fault localization may be viewed as an approach for finding hidden faults or bugs in the existing program codes which are syntactically correct and give fault free output for some input instances but fail for all other input instances. Some of the reasons include logical errors, wrong interpretation of specification, coding errors. Finding such faults is not possible sometimes with the help of compilers. This is where the necessity and significance of software fault localization stems out. The main contribution for this work is to first introduce the block hit-miss function which relates block vectors of execution sequences of software code over sample runs performed and the decision vector which denotes fault or error free output. The similarity measure is applied to the block vector and decision vectors as input and the pair with maximum similarity is considered as faulty block.
description: ICEMIS '15: Proceedings of the The International Conference on Engineering & MIS 2015
Upscaling of Perovskite-Silicon Tandem Solar Cells
Creators: name: Schultz-Wittmann, O.
name: Schulze, P.S.C.
name: Er-Raji, O.
name: Efinger, R.
name: Kabaklı, Ö.S.
name: Heydarian, M.
name: McMullin, K.A.
name: Fischer, O.
name: Bett, A.J.
name: Erath, D.
name: Pingel, S.
name: Heitmann, U.
name: Kiaee, Z.
name: Kohlstädt, M.
name: Kore, B.P.
name: Nagel, H.
name: Schubert, M.C.
name: Bivour, M.
name: Goldschmidt, J.C.
name: Borchert, J.
name: Hermle, M.
name: Glunz, S.W.
Publisher: name: WIP
Year: 2022
Subjects: Evolving and Emerging Technologies: Tandems; Thin Film absorbers; III-V; New Materials and Concepts; Advanced Modelling
Tandems

description: 8th World Conference on Photovoltaic Energy Conversion; 354-357
description: We are working on upscaling of perovskite-silicon tandem solar cells from small lab size areas of several square millimeters to full commercial wafer size. This requires the use of processing techniques that can replace the usual spin coating process employed for small lab size areas. As alternatives for large-area depositions spray coating, inkjet printing and slot-die coating are investigated. For highest specific energy yield under field conditions perovskitesilicon tandem solar cells should be textured on the front side. To ensure conformal coating of the random pyramid textured silicon bottom cell we follow a hybrid process route. In a first step, the inorganic components are thermally evaporated to form a scaffold allowing conformal coating of pyramids of arbitrary size and shape. In a second step, the conversion into perovskite is accomplished by infiltration of the scaffold with organic salt solutions. A thermal anneal completes the conversion into a polycrystalline perovskite layer. In addition to upscaling of the cell area we work on replacing the evaporated silver contact grid by screen printed ultralow temperature silver paste. First results on planar perovskite-silicon tandem solar cells, still fabricated with spin coating processing but with screen-printed front contacts, resulted in a certified stabilized conversion efficiency of 22.5% on 104 cm2 total cell area.
Radial Limits of Capillary Surfaces at Corners
Creators: name: Mozhgan
name: Entekhabi
name: Lancaster, Kirk
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J93, 53A10, 35B40, 76D45

description: Consider a solution $f\in C^{2}(Ω)$ of a prescribed mean curvature equation \[ {\rm div}\left(\frac{\nabla f}{\sqrt{1+|\nabla f|^{2}}}\right)=2H(x,f) \ \ \ \ {\rm in} \ \ Ω\subset R^{2}, \] where $Ω$ is a domain whose boundary has a corner at ${\cal O}=(0,0)\in\partialΩ$ and the angular measure of this corner is $2α,$ for some $α\in (0,π).$ Suppose $\sup_{x\inΩ} |f(x)|$ and $\sup_{x\inΩ} |H(x,f(x))|$ are both finite. If $α>\fracπ{2},$ then the (nontangential) radial limits of $f$ at ${\cal O},$ \[ Rf(θ) = \lim_{r\downarrow 0} f(r\cos(θ),r\sin(θ)), \] were recently proven by the authors to exist, independent of the boundary behavior of $f$ on $\partialΩ,$ and to have a specific type of behavior. Suppose $α\in \left(\fracπ{4},\fracπ{2}\right],$ the contact angle $γ(\cdot)$ that the graph of $f$ makes with one side of $\partialΩ$ has a limit (denoted $γ_{2}$) at ${\cal O}$ and \[ π-2α< γ_{2} <2α. \] We prove that the (nontangential) radial limits of $f$ at ${\cal O}$ exist and the radial limits have a specific type of behavior, independent of the boundary behavior of $f$ on the other side of $\partialΩ.$ We also discuss the case $α\in \left(0,\fracπ{2}\right].$
description: To be submitted to the Pacific Journal of Mathematics. arXiv admin note: text overlap with arXiv:1510.05288
A Prototype Scalable Readout System for Micro-pattern Gas Detectors
Creators: name: Zheng, Qi-Bin
name: Liu, Shu-Bin
name: Tian, Jing
name: Li, Cheng
name: Feng, Chang-Qing
name: An, Qi
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A scalable readout system (SRS) is designed to provide a general solution for different micro-pattern gas detectors. The system mainly consists of three kinds of modules: the ASIC card, the Adapter card and the Front-End Card (FEC). The ASIC cards, mounted with particular ASIC chips, are designed for receiving detector signals. The Adapter card is in charge of digitizing the output signals from several ASIC cards. The FEC, edged-mounted with the Adapter, has a FPGA-based reconfigurable logic and I/O interfaces, allowing users to choose various ASIC cards and Adapters for different types of detectors. The FEC transfers data through Gigabit Ethernet protocol realized by a TCP processor (SiTCP) IP core in field-programmable gate arrays (FPGA). The readout system can be tailored to specific sizes to adapt to the experiment scales and readout requirements. In this paper, two kinds of multi-channel ASIC chips, VA140 and AGET, are applied to verify the concept of this SRS architecture. Based on this VA140 or AGET SRS, one FEC covers 8 ASIC (VA140) cards handling 512 detector channels, or 4 ASIC (AGET) cards handling 256 detector channels. More FECs can be assembled in chassis to handle thousands of detector channels.
description: 6 pages, 7 figures, 2 tables
Analysis of Selenization Temperature for the Performance Improvement of Spin Coated CZTSSe Solar Cells
Creators: name: Punathil, P.
name: Zanetti, S.
name: Artegiani, E.
name: Torabi, N.
name: Romeo, A.
Publisher: name: WIP
Year: 2022
Subjects: Evolving and Emerging Technologies: Tandems; Thin Film absorbers; III-V; New Materials and Concepts; Advanced Modelling
CI(G)S, CdTe and Related Thin Films; Organic and Dye-Sensitised Devices

description: 8th World Conference on Photovoltaic Energy Conversion; 339-341
description: In our laboratory, Cu2ZnSn(S,Se)4 (CZTSSe) films are prepared by selenization of spin coated CZTS precursors. In this study, different temperatures are tested for the selenization process and their effects on the device are investigated. The influence of the selenization temperature on the Se incorporation and structural properties of the absorber have been analyzed by X-ray diffraction, Raman spectroscopy and scanning electron microscopy methods. Current-voltage analysis reveals a fill factor reduction with increasing temperature, concurrently with an improvement in short circuit current and efficiency. SLG/Mo/CZTSSe/CdS/iZnO/ITO/Au cells fabricated with selenization process at 550 °C reach an efficiency of 6.3 %.
Defect Analysis of Graded CdSexTe1-x/CdTe Thin-Film Solar Cells by Means of Thermal Admittance Spectroscopy
Creators: name: Schönau, M.
name: Nicklaus, M.
name: Hüttl, B.
name: Papageorgiou, G.
name: Arndt, R.
name: Späth, B.
name: Siepchen, B.
Publisher: name: WIP
Year: 2022
Subjects: Evolving and Emerging Technologies: Tandems; Thin Film absorbers; III-V; New Materials and Concepts; Advanced Modelling
CI(G)S, CdTe and Related Thin Films; Organic and Dye-Sensitised Devices

description: 8th World Conference on Photovoltaic Energy Conversion; 342-345
description: Thermal admittance spectroscopy (TAS) is often used to analyze trap states in CdTe thin-film photovoltaics. Specifically, the apparent energy level and the concentration of defects can be calculated using this method. In this work, we present TAS measurements on CdSeTe photovoltaic devices with varying Se concentrations and power conversion efficiencies from 12 % to 20 %. The results show two main trap signatures. The defects concentrations are evaluated using the emission parameter instead of the typically used capture cross-section. After correcting the emission parameter by the kinetic compensation effect, plots of PV performance versus the emission parameter of trap signature 1 show a good correlation, indicating that the emission parameter is suitable for determining concentration differences between the various samples.