cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Beam Shaping for High Throughput Laser Doped Selective Emitter Solar Cells
Creators: name: Jäger, U.
name: Fertig, F.
name: Oesterlin, P.
name: Büchel, A.
name: Ullmann, R.
name: Zuehlke, H.-U.
name: Preu, R.
Publisher: name: WIP
Year: 2011
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 1377-1380
description: To overcome limitations in efficiency originating from the front side of a crystalline silicon solar cell,
the concept of the selective emitter has been investigated in recent years. Several approaches have been presented and
tested for their industrial feasibility. Although almost all concepts are able to achieve a gain in conversion efficiency,
not all technologies are realizable due to process complexity and possible major modifications necessary for
retrofitting existing production lines. This motivates a simple process flow for the fabrication of a selective emitter
structure. Laser Doping from phosphorous silicate glass (PSG) is a cost attractive approach, as only one additional
processing step is required for selective emitter formation and no consumables are used. In this work solar cells on
both mono- and multicrystalline silicon with selective emitter have been fabricated. A beam splitter in conjunction
with a high power laser system has been used to allow for high throughput processing with 10 parallel laser beams.
Solar cell parameters are shown and discussed. To investigate possible hot spots under reverse bias conditions of the
shallow emitter, Dark Lock-In Thermography (DLIT) measurements have been conducted and reveal no hot-spots.
Progress in Alkaline Texturing Inline for Monocrystalline Silicon Solar Cells
Creators: name: Fano, V.
name: Rodríguez, V.
name: Freire, I.
name: Azkona, N.
name: Tejado, L.
name: Jimeno, J.C.
Publisher: name: WIP
Year: 2011
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 1394-1397
description: Our work focuses on developing a prototype for in-line anisotropic texturing of monocrystalline
silicon solar cells. It is well-known that inline configuration simplifies the process flow. Due to long process
time (longer than 20 min) for industrial anisotropic texturing recipes, feasibility for inline configurations has
not been observed, until the moment.
A new diluted and short time anisotropic recipe gives us the chance of developing an inline anisotropic
texturing. New experiments were carried out in a lab prototype, built by Lumiplas S.L. Reflectance
measurements and optical micrographs analyze the quality of this texturing. Silicon wafers with 12%
reflectance are obtained in the lab prototype. Technical changes are continuously incorporated trying to
rectify the drawbacks after transferring the successful batch technology to inline prototype.
Phase diagram and collective excitation in excitonic insulator: from the orbital physics viewpoint
Creators: name: Nasu, Joji
name: Watanabe, Tsutomu
name: Naka, Makoto
name: Ishihara, Sumio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Excitonic insulating system is studied from the viewpoints of the orbital physics in strongly correlated electron systems. An effective model Hamiltonian for low-energy electronic states is derived from the two-orbital Hubbard model with a finite energy difference corresponding to the crystalline field splitting. The effective model is represented by the spin operators and the pseudo-spin operators for the spin-state degrees of freedom. The ground state phase diagram is analyzed by the mean-field approximation. In addition to the low-spin state and high-spin state phases, two kinds of the excitonic insulating phases emerge as a consequence of the competition between the crystalline field effect and the Hund coupling. The excitonic transition is classified to be an Ising-like transition reflecting a spontaneous breaking of the $Z_2$ symmetry. Magnetic structures in the two excitonic insulating phases are different from each other; an antiferromagnetic order and a spin nematic order. Collective excitations in each phase are examined by using the generalized spin-wave method. The Goldstone modes in the excitonic insulating phases appear in the dynamical correlation functions for the spins and pseudo-spin operators. Both the transverse and longitudinal spin excitation modes are active in the two excitonic insulating phases in contrast to the low-spin state and high-spin state phases. Connections of the present results to the perovskite cobalt oxides are discussed.
description: 15 pages, 9 figures
Formation of a Low Ohmic Contact Nickel Silicide Layer on Textured Silicon Wafers Using Electroless Nickel Plating
Creators: name: Nguyen, A.
name: Rane-Fondacaro, M.V.
name: Efstathiadis, H.
name: Haldar, P.
name: Michaelson, L.
name: Wang, C.
name: Munoz, K.
name: Tyson, T.
name: Gallegos, A.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2672-2675
description: This paper presents a low cost process for fabrication of high efficiency silicon-based solar cells from
front side ARC patterning through contact line metallization. This process utilizes a screen printable etch resist to
define the contact pattern and a wet etching solution to remove the exposed ARC layer. The metallization stack for
the contact line pattern consists of a nickel silicide ohmic contact and a nickel and copper metal stack plated using a
light induced plating (LIP) process. The nickel silicide contact is formed by annealing a thin nickel seed layer that is
deposited on the silicon surface using two different alternative seed layer (ASL) processes, chemically activated and
light assisted electroless plating. Through optimization of the ASL processes, a thin, uniform NiSi layer is achieved
that is less than 200 nm. This thin NiSi layer should be compatible with shallow emitter silicon solar cells. An LIP
process for nickel and copper over the NiSi contact areas is demonstrated.
Technological work environment: instrument development and measurement
Creators: name: Akbar, Waqar
name: Jaafar, Noor Ismawati
name: Mohezar, Suhana
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: Plant Biology

description: The workplace environment can be represented by physical, psychosocial, and technological environment scales. Whilst there are established measurement scales for the physical and social environments in existing literature, there has been a lack of development regarding the appropriate operationalisation and measurement of the technological environment. Given this, the present study develops parsimonious measures for the technological work environment by employing a mixed method approach. This includes generating domains and items from a qualitative content analysis through focus group interviews, establishing the face and content validity of the instrument through consulting experts in the area, evaluating the construct validity by performing exploratory factor analysis and confirmatory factor analysis on data collected from information technology professionals. The study further calculated floor and ceiling effects and test-retest reliability. This study suggests that the technological work environment be measured in three main dimensions, which include connectivity and network and availability of appropriate cutting-edge devices and software applications. The instrument developed can be used by other researchers in conducting future empirical studies in this area. Industry practitioners can also use the instrument in analyzing how well they have satisfied the employees in providing a technologically conducive workplace environment.
Endless Fun in high dimensions - a card game to program a high-dimensional quantum computer
Creators: name: Kopf, Lea
name: Hiekkamäki, Markus
name: Prabhakar, Shashi
name: Fickler, Robert
Publisher: name: Zenodo
Year: 2020
Subjects: quantum computing, card game, high-dimensional quantum information, qubit, qudit,

description: Idea of the card game Build your own high-dimensional quantum computer. By applying quantum logic operations to high-dimensional quantum bits – so-called qudits -, you can change their values. Try to reach the highest possible value on your qudit, while keeping the other player’s qudit as low as possible. The evaluation software calculates the final state after each round, in which a certain number of measurements will project possible complex superposition states into a final value. The player with the highest qudit values in three rounds wins the game. See instructions for a detailed discription of the game. Please also have a look at the manuscript detailing the ideas behind the game, which can be found here: https://arxiv.org/abs/2107.12007 The upload contains: instructions pdf-file to print the cards program to evaluate the outcome of the game (python code as well as executable application) NOTE: There is a newer version of the evaluation software and an enhanced design of the cards available. NOTE: The general idea is strongly based on the great card game Q|Cards> by Oskari Kerppo, Jorden Senior, Sabrina Maniscallo, Guillermo Garcia-Perez, Samuli Jääskeläinen, Sylvia Smatanova, Krista Erkkilä, Elie Abraham, which is a very similar game using only qubits. It can be found here: https://zhamul.itch.io/qcards
UNIVERSOL Project. Final Results
Creators: name: De La Casa Higueras, J.
name: Almonacid, G.
name: Muñoz-Cerón, E.
name: Rubio Paramio, M.A.
name: Lopez Talavera, D.L.
name: Ortega, M.J.
name: Martínez Ruiz, A.
name: Gómez Vidal, P.G.
name: Pérez-Higueras, P.
name: Gallego, J.
name: Del Jesus, M.J.
name: Aguilera Tejero, J.
Publisher: name: WIP
Year: 2011
Subjects: PV Systems
PV and Architecture

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 4068-4072
description: The integration of Grid-Connected PV systems into buildings or public areas is one of the most usual
applications of the photovoltaic solar energy in developed countries.
Since early 2009, the University is working on an ambitious project, the so-called UNIVERSOL project, where its main
goal is to convert the University Campus in a big public area which combines the PV electricity generation with the common
uses of a university place.
The aim of this paper is to show to the scientific community the main results of this project and that the methodology
proposed for the “large urban-area photovoltaic potential” estimation can be easily exportable to other locations with similar
characteristics, so the photovoltaic generators integration examples proposed in this project, and the software tools used to
represent it, can be helpful for other designers, taking into account that this project has been adapted to the new Spanish
legislation.
Formation of Textured Surface on Crystalline Silicon Wafers Using RF Hydrogen Remote Plasma Technique
Creators: name: Ogawa, K.
name: Suzuki, S.
name: Suzuki, H.
name: Dhamrin, M.
name: Kamisako, K.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2452-2455
description: Texturing of crystalline silicon by RF hydrogen remote plasma resulted in a low surface reflectance
below 10% on crystalline silicon substrate. The silicon surface roughness after RF hydrogen plasma texturing was
improved after smoothing process in HF/HNO3 mixture. The surface reflectance and texture structure are not affected
remarkably by smoothing durations. The effective lifetime of the RF hydrogen remote plasma textured samples
decreased remarkably due to the plasma etching damage. However, it increases again after a proper surface
smoothing. The surface reflectance decreased below 3% at 500-1100 nm wavelengths by additional anti-reflection
coating of SiNx:H films on the smoothed textured. Solar cell characteristics were improved by 15 sec smoothing
process, and the applicability of the etching and proper smoothing process was confirmed.
20:20 Hindsight. Retrofitting research relevance to the University Art Collections at Trinity College, Dublin
Creators: name: Giltrap, Catherine
Publisher: name: International Committee for University Museums and Collections (UMAC)
Year: 2011
Subjects: subject: University
subject: Art
subject: Collections
subject: 060 Organisationen, Museumswissenschaft

description: This paper considers the role of university art collections as meaningful contributors to the achievement of institutional goals relating to excellence in research, teaching and outreach. The discussion takes as its focus The University of Dublin, Trinity College, established in 1592, providing undergraduate and postgraduate courses in a wide range of disciplines. As practical fine art courses are not part of the teaching agenda, the university’s art collections have evolved mainly as a historical narrative of the significant figures and achievements of its parent institution, parallel to the core business of research and teaching. While the other academic collections at the university, from anatomy to zoology, were generated by object based learning, it was only from 1959 onwards that the art collections were actively developed and exploited as a catalyst for informal learning and interdisciplinary engagement, driven by the actions of one man in particular, the late George W. P. Dawson, genetics professor. 20:20 hindsight – or the clearer perception of the significance of events after they have occurred – has been used as a guiding principle for the present renaissance of the utility of the art collections. The author, as curator of the Art Collections, has taken inspiration from the actions of George Dawson to prepare to retrofit formal systems of meaningful associations between the art collections and research and teaching. In an era that requires clear correlations between demands on funding and fulfilling campus-wide strategic objectives, university art collections such as at Trinity College Dublin are becoming more formally integrated into academic programmes as the useful educational and interpretive tools that many have been on standby to be for centuries.
19.3% Efficient Selective Emitter Silicon Solar Cells by Industrial Process
Creators: name: Paviet-Salomon, B.
name: Manuel, S.
name: Gall, S.
name: Singer, J.
name: Baudrit, M.
name: Monna, R.
name: Slaoui, A.
Publisher: name: WIP
Year: 2011
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 1365-1368
description: Two selective emitter (SE) silicon solar cells technologies have been developed and investigated. The
first one uses laser doping from phosphosilicate glass layer to pattern the heavily-doped areas to be subsequently
contacted (LD – SE), while the second approach features an oxide barrier deposition followed by a etch-back step to
form the selective emitter (EB – SE). Both kinds of SE cells were characterized and featured improved performances
when compared to standard cells with a homogeneous emitter. The EB – SE however was found to perform the best,
reaching a maximum efficiency of 19.3 %. The better performances of EB – SE cells were explained based on both
experimental measurements and simple numerical simulations. TCAD device simulations were then carried out to
optimize the front metallization grid of both kinds of SE cells. Numerical results showed that a further overall gain in
efficiency of 0.3 %abs is achievable using thinner metallization fingers and a smaller screen pitch.
Evaluation of the Chemical and Thermal Passivation of Silicon to Produce Solar Cells
Creators: name: Jiménez-Rodríguez, E.
name: Sánchez-Fajardo, V.M.
name: González-Diaz, B.
name: Montesdeoca-Santana, A.
name: Díaz-Herrera, B.
name: Torres, M.E.
name: Guerrero-Lemus, R.
name: Borchert, D.
name: Linares, A.
name: Llarena, E.
name: Montes, C.
name: González, O.
name: Pío, A.
name: Molina, D.
name: Friend, M.
name: Cendagorta, M.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2678-2681
description: Some passivation processes in the manufacture of silicon-based solar cells are performed through the
growth of SiO2 on silicon substrates. This paper evaluates the properties of SiO2 grown by thermal and chemical
treatments, and its influence in the lifetime of minority carriers. The thermal oxidation is performed at different
temperatures and times, and the chemical oxidation through different solutions (HNO3, H2O2 and H2SO4) at different
times, on silicon single crystal. The thickness of the SiO2 layer is determined by interferometry and by Capacitance-
Voltage curves. Also IR spectroscopy and the lifetimes of minority charge carriers are measured by means of Quasi
Steady State Photoconductance (QSSPC) decay technique, in order to optimize the oxidation processes in the solar
cell fabrications.
Reorganizing a 20th century cabinet of curiosities into a museum for the 21st century
Creators: name: Fernández, Isabel M. García
Publisher: name: International Committee for University Museums and Collections (UMAC)
Year: 2011
Subjects: subject: University museum
subject: Anthropology collections
subject: Forensic science
subject: 060 Organisationen, Museumswissenschaft

description: This paper describes the life of a university museum that was born in the 1980s and transformed in the 21st century. Over a period of 25 years Professor Reverte collected more than 3700 objects and set up an authentic cabinet of curiosities dedicated to the fields of anthropology and forensic science. Despite the diversity of its contents, the museum had a recognized scientific interest. It has now undergone changes in order to meet the requirements of new academic demands and public accessibility, but without losing reference to its origins.
Single-Mode Displacement Sensor
Creators: name: Duivenvoorden, Kasper
name: Terhal, Barbara M.
name: Weigand, Daniel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that one can determine both parameters of a displacement acting on an oscillator with an accuracy which scales inversely with the square root of the number of photons in the oscillator. Our results are obtained by using a grid state as a sensor state for detecting small translations in phase space (displacements). Grid states were first proposed in (see https://doi.org/10.1103/PhysRevA.64.012310 ) for encoding a qubit into an oscillator: an efficient preparation protocol of such states, using a coupling to a qubit, was developed in (see https://doi.org/10.1103/PhysRevA.93.012315 ). We compare the performance of the grid state with the quantum compass or cat code state and place our results in the context of the two-parameter quantum Cramér-Rao lower bound on the variances of the displacement parameters. We show that the accessible information about the displacement for a grid state increases with the number of photons in the state when we measure and prepare the state using a phase estimation protocol. This is in contrast with the accessible information in the quantum compass state which we show is always upper bounded by a constant, independent of the number of photons. We present numerical simulations of a phase estimation based preparation protocol of a grid state in the presence of photon loss, nonlinearities and qubit measurement, using no post-selection, showing how the two effective squeezing parameters which characterize the grid state change during the preparation. The idea behind the phase estimation protocol is a simple maximal-information gain strategy.
description: 17 pages, 11 figures. Version 4: Extensive numerical section added
Optimization of Selective Emitter Formation Using Laser Doping in Crystalline Silicon Solar Cell
Creators: name: Hirata, K.
name: Takayama, T.
name: Hasegawa, M.
name: Funatani, T.
name: Fuyuki, T.
Publisher: name: WIP
Year: 2011
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 1235-1238
description: Selective emitter formation for silicon solar cells is very important to increase efficiency  due to the
heavily doped region underneath which reduces contact resistance. However, recent technology for the selective
emitter in silicon solar cells needs additional processing steps such as deposition step of masks to become diffusion
barriers, furnace diffusions, chemical etching and cleaning. These steps lead to be slow manufacturing and
additionally increase process cost. By contrast, laser doping (LD) can operate a simple process only without necessity
of using masks and photolithography because the doping area is formed at only laser irradiated area. Furthermore, LD
can be performed at the room temperature and in the atmosphere. In this study, we tried to optimize the selective
emitter formation using laser doping at room temperature in the atmospheric pressure. The selective emitter was
formed by laser irradiation on furnace diffused emitter surface at room temperature. Especially, we investigated the
correlation between the diffused emitter and the selective emitter for the solar cells.
Theory of the Robin quantum wall in a linear potential. I. Energy spectrum, polarization and quantum-information measures
Creators: name: Olendski, O.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Information-theoretical concepts are employed for the analysis of the interplay between a transverse electric field $\mathscr{E}$ applied to a one-dimensional surface and Robin boundary condition (BC), which with the help of the extrapolation length $Λ$ zeroes at the interface a linear combination of the quantum mechanical wave function and its spatial derivative, and its influence on the properties of the structure. For doing this, exact analytical solutions of the corresponding Schrödinger equation are derived and used for calculating energies, dipole moments, position $S_x$ and momentum $S_k$ quantum information entropies and their Fisher information $I_x$ and $I_k$ and Onicescu information energies $O_x$ and $O_k$ counterparts. It is shown that the weak (strong) electric field changes the Robin wall into the Dirichlet, $Λ=0$ (Neumann, $Λ=\infty$), surface. This transformation of the energy spectrum and associated waveforms in the growing field defines an evolution of the quantum-information measures; for example, it is proved that for the Dirichlet and Neumann BCs the position (momentum) quantum information entropy varies as a positive (negative) natural logarithm of the electric intensity what results in their field-independent sum $S_x+S_k$. Analogously, at $Λ=0$ and $Λ=\infty$ the position and momentum Fisher informations (Onicescu energies) depend on the applied voltage as $\mathscr{E}^{2/3}$ ($\mathscr{E}^{1/3}$) and its inverse, respectively, leading to the field-independent product $I_xI_k$ ($O_xO_k$). Peculiarities of their transformations at the finite nonzero $Λ$ are discussed and similarities and differences between the three quantum-information measures in the electric field are highlighted with the special attention being paid to the configuration with the negative extrapolation length.
description: 10 Figures, 1 Table
Production of 19.2% Efficient Large Area Commercial Grade P-Type CZ Silicon Solar Cells Based on the Laser Doped Selective Emitter Technology
Creators: name: Lee, H.
name: Lee, E.-J.
name: Kim, J.
name: Shin, J.
name: Kim, J.
name: Choi, J.
name: Kim, I.
name: Shim, J.
name: Oh, D.-J.
name: Cho, K.-Y.
name: Kong, J.
name: Seo, J.-K.
name: Lee, S.
name: Hallam, B.
name: Wenham, S.R.
name: Lee, H.
Publisher: name: WIP
Year: 2011
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 1390-1393
description: In comparison with other techniques for forming selective emitter structures, the UNSW laser doped
selective emitter approach is a very simple and cost-effective to apply to standard industrial screen-printed solar cell
production line with the inclusion of laser doping and plating equipment. In this paper, we investigate two different
processing methods for the formation of the aluminium back surface field for the fabrication of laser doped selective
emitter solar cells on industrial equipment. Each step of cell fabrication is monitored using a photoluminescence
imaging system to understand the effects of individual processes on overall cell performance and hence obtain the
optimal process parameters for various processes. It is observed that using non-optimal firing conditions for the
formation of the aluminium back surface field can lead to the formation of low lifetime regions in areas where the
SiN is in direct contact with the belt. However, by avoiding contact of the SiN layer to the belt during the firing step,
these low lifetime regions are avoided, and open circuit voltages of 638 mV are obtained with fill factors of more
than 78% on large area devices.
Radio detection prospects for a bulge population of millisecond pulsars as suggested by Fermi LAT observations of the inner Galaxy
Creators: name: Calore, Francesca
name: Di Mauro, Mattia
name: Donato, Fiorenza
name: Hessels, Jason W. T.
name: Weniger, Christoph
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Analogously to globular clusters, the dense stellar environment of the Galactic center has been proposed to host a large population of as-yet undetected millisecond pulsars (MSPs). Recently, this hypothesis found support in the analysis of gamma rays from the inner Galaxy seen by the Large Area Telescope (LAT) aboard the Fermi satellite, which revealed a possible excess of diffuse GeV photons in the inner 15 deg about the Galactic center (Fermi GeV excess). The excess can be interpreted as the collective emission of thousands of MSPs in the Galactic bulge, with a spherical distribution that strongly peaks towards the Galactic center. In order to fully establish the MSP interpretation, it is essential to find corroborating evidence in multi-wavelength searches, most notably through the detection of radio pulsation from individual bulge MSPs. Based on globular cluster observations and the gamma-ray emission from the inner Galaxy, we investigate the prospects for detecting MSPs in the Galactic bulge. While previous pulsar surveys failed to identify this population, we demonstrate that, in the upcoming years, new large-area surveys with focus on regions a few degrees north or south of the Galactic center should lead to the detection of dozens of bulge MSPs. Additionally, we show that, in the near future, deep targeted searches of unassociated Fermi sources should be able to detect the first few MSPs in the bulge. The prospects for these deep searches are enhanced by a tentative gamma-ray/radio correlation that we infer from high-latitude gamma-ray MSPs. Such detections would constitute the first clear discoveries of field MSPs in the Galactic bulge, with far-reaching implications for gamma-ray observations, the formation history of the central Milky Way and strategy optimization for future radio observations.
description: 24 pages, 17 figures, 5 tables. Minor clarifications. Matches version published in ApJ
Simultaneous Solar Water Purification and Electricity Generation: Concept and Initial Results
Creators: name: Vivar, M.
name: Fuentes, M.
name: Dodd, N.
name: Scott, J.
name: Skryabin, I.
Publisher: name: WIP
Year: 2011
Subjects: PV Systems
Off-grid Applications

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 4136-4141
description: A series of initial experiments to demonstrate the feasibility of hybrid photocatalytic-photovoltaic
systems for simultaneous water purification and electricity generation have been conducted. Commercial TiO2 (Aeroxide
P25) suspended nanoparticles have been used as a photocatalyst and an organic dye (Methylene Blue) as a pollutant. The
photovoltaic output of the hybrid system was observed to be related to MB dye photodegradation, whereby as the
pollutant degraded the optical transmission to the cell improved. When dye decolourisation was complete, the increase in
photovoltaic output was about 30% depending on the initial dye concentration. The findings indicate both technologies
can work simultaneously, producing drinking water and generating electricity to feed a pump, which establishes the path
for a complete autonomous system. A first autonomous system prototype has been developed showing the feasibility of
the concept.
title: Real Fábrica das Sedas
Creators: name: de Almeida Barata, João
Publisher: name: CHAM, Faculdade de Ciências Sociais e Humanas, Universidade NOVA de Lisboa
Year: 2022

description: Entrada histórica sobre a instituição Real Fábrica das Sedas, Lisboa, Portugal, na plataforma eViterbo
description: Almeida Barata, João de . 2022. Real Fábrica das Sedas in eViterbo. CHAM, Faculdade de Ciências Sociais e Humanas, Universidade Nova de Lisboa. eISBN: 978-989-8492-77-7
title: An examination of the influences of telecommuting on employee satisfaction and organizational citizenship behaviour in the information technology industry in Singapore
Creators: name: Neo, Hong Tat
Publisher: name: Edinburgh Napier University
Year: 2021

description: Telecommuting or telework has seen slow adoption over the years with some large corporations rescinding their support for this practice. While studies have linked telecommuting to favorable organizational outcomes such as employee satisfaction, organizational performance, reduced turnover intentions, higher employee commitment, some other studies have shown debatable outcomes. This thesis aims to study the influence of telecommuting support on employee satisfaction and organizational citizenship behaviour in the IT industry in Singapore. Using sequential-mixed methods approach, this study collected data from 100 IT employees familiar with telecommuting using purposive sampling comprising online questionnaires as the first step, followed by in-depth interviews with five managers. The findings conclude that telecommuting support positively impacts employee satisfaction and organizational citizenship behaviour. Disadvantages of telecommuting often cited in literature are not found to be significant variables. The presence of elderly dependents is a predictor for increased organizational citizenship behaviour while employees working in large multinational companies larger than 250 employees are found to have decreased organizational citizenship behaviour. There are 10 factors identified to influence manager’s adoption of telecommuting practice for their work teams. The results from this thesis enable the proposal of a telecommuting adoption conceptual model where managers can lend guidance in the adoption of telecommuting for their organizations.
title: Scottish wild deer as a potential source of human pathogenic non-O157 Shiga toxin producing Escherichia coli (STEC)
Creators: name: Mitchell, Mairi Christine
Publisher: name: Edinburgh Napier University
Year: 2021

description: Shiga-toxin producing E. coli (STEC) are zoonotic pathogens, which release phage-encoded Shiga toxins (Stx). Stx subtypes stx2a and stx2d are associated with severe human disease. STEC O157 is the most common serotype in human disease although other pathogenic serotypes exist. Cattle, sheep and deer can carry STEC. A recent study found STEC O157 prevalence of 0.34 % (95 % CI = 0.02 – 6.30) in Scottish wild deer; however 69.5 % of faecal samples were stx positive suggesting presence of pathogenic non-O157 STEC serotypes.

The aims of this project were: (i) to investigate prevalence and factors associated with carriage of stx2a genes in Scottish wild deer; (ii) to determine pathogenic potential of non-O157 STEC strains isolated from Scottish wild deer using whole genome sequencing (WGS).

PCR testing of faecal samples found 12 % of stx positive samples were subtype stx2a. In an ‘all deer species’ model, roe deer and sheep density had significant positive associations with stx2a. In a ‘roe deer only’ model, South of Scotland, % semi-natural grassland and rain-days in month had significant positive association with stx2a. WGS of 56 non-O157 STEC strains isolated from deer faeces identified five strains genetically similar to individual Scottish human clinical non-O157 STEC isolates. Of these, two deer isolates had identical stx and virulence gene profiles to the closest human isolates, and three strains differed only by one or two virulence genes, including a stx2d positive strain. The majority of isolates (47/56) had low pathogenic subtypes stx2b or stx2b:stx1c. Although stx2a was found in three isolates, none were genetically similar to human clinical strains.

In conclusion, this study found roe deer were more likely to carry pathogenic stx2a and presence of sheep and environmental factors may influence this. Non-O157 STEC strains from deer are likely to cause diarrhoea but not severe human disease.
title: Characterisation of autophagy modulation by thiopurines in inflammatory bowel disease
Creators: name: Masson, Connan Dayton
Publisher: name: Edinburgh Napier University
Year: 2021

description: Background
Inflammatory bowel disease (IBD), which includes Crohn’s disease (CD) and ulcerative colitis, are chronic diseases of the gastrointestinal tract. Genetic studies have identified strong association between genes involved in autophagy, ER-stress/unfolded protein response (UPR) and IBD. Stimulating autophagy may be beneficial for the treatment of IBD, and thiopurines, a class of drugs in clinical use for IBD, have been shown to induce autophagy. The aim of this study was to investigate the mechanism of action of thiopurines azathioprine (AZA), 6-MP and 6-TG in the context of autophagy, with focus on the interplay between autophagy and ER-stress/UPR signalling pathways.

Methods
Autophagy was evaluated by confocal fluorescence microscopy and live-cell imaging of autophagy marker LC3. Cell viability was assessed by Alamar Blue assay, and induction of apoptosis assessed by Annexin V/PI staining. Activation of ER stress and UPR signalling was investigated by reverse transcription polymerase chain reaction (RT-PCR), quantitative RTqPCR (RT-qPCR) and immunoblotting. Modulation of mechanistic target of rapamycin (mTORC1) was assessed by immunoblotting.

Results
AZA, 6-MP and 6-TG are strong inducers of autophagy, with AZA inducing autophagy more rapidly than 6-MP or 6-TG. AZA and 6-TG increased early apoptosis, while 6-TG reduced cell viability and inhibited cell growth. Thiopurines did not induce ER stress, however, 6-TG activated the UPR pathway. AZA induced autophagy via mechanisms involving modulation of mTORC1 signalling.

Conclusions
Thiopurines are strong inducers of autophagy. There are differences in AZA, 6-MP and 6-TG mechanism of action, therefore, a better understanding may lead to personalised application, and improve the therapeutic efficacy of thiopurines in IBD.
Fronthaul Compression and Transmit Beamforming Optimization for Multi-Antenna Uplink C-RAN
Creators: name: Zhou, Yuhan
name: Yu, Wei
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper considers the joint fronthaul compression and transmit beamforming design for the uplink cloud radio access network (C-RAN), in which multi-antenna user terminals communicate with a cloud-computing based centralized processor (CP) through multi-antenna base-stations (BSs) serving as relay nodes. A compress-and-forward relaying strategy, named the VMAC scheme, is employed, in which the BSs can either perform single-user compression or Wyner-Ziv coding to quantize the received signals and send the quantization bits to the CP via capacity-limited fronthaul links; the CP performs successive decoding with either successive interference cancellation (SIC) receiver or linear minimum-mean-square-error (MMSE) receiver. Under this setup, this paper investigates the joint optimization of the transmit beamformers at the users and the quantization noise covariance matrices at the BSs for maximizing the network utility. A novel weighted minimum-mean-square-error successive convex approximation (WMMSE-SCA) algorithm is first proposed for maximizing the weighted sum rate under the user transmit power and fronthaul capacity constraints with single-user compression. Assuming a heuristic decompression order, the proposed algorithm is then adapted for optimizing the transmit beamforming and fronthaul compression under Wyner-Ziv coding. This paper also proposes a low-complexity separate design consisting of optimizing transmit beamformers for the Gaussian vector multiple-access channel along with per-antenna quantizers with uniform quantization noise levels across the antennas at each BS. Numerical results show that with optimized beamforming and fronthaul compression, C-RAN can significantly outperform conventional cellular networks. Furthermore, the low complexity separate design already performs very close to the optimized joint design in regime of practical interest.
description: IEEE Transactions on Signal Processing, vol. 64, no. 16, pp.4138-4151, August 15, 2016, with minor corrections
Role of miR-21 in the downregulation of Sema5A protein in glioblastomas
Creators: name: Mirani, Seyedeh Zeinab Taheri
Publisher: name: Monash University
Year: 2023
Subjects: Neurosciences not elsewhere classified
Cancer cell biology
Animal cell and molecular biology

description: Glioblastoma is the most aggressive type of brain tumor and is extremely resistant to most chemotherapies. Sema5A is a transmembrane protein recently found to be essential for controlling glioblastoma cell growth and migration. miR-21 was found to downregulate the expression of Sema5A, which results in glioblastoma cell proliferation. This research illustrated that Sema5A masking oligonucleotides approach successfully reduced glioblastoma cell proliferation, migration, and colony formation by preventing miR-21 from binding on to the 3’UTR of Sema5A. These findings suggest that miRNA-masking oligonucleotides are potential therapeutics for glioblastomas.
title: Resistance to change: Exploring Singapore blue-collar worker’s perceptions of organizational change management approaches in the semiconductor industry
Creators: name: Lum, Frederick Chee Sheng
Publisher: name: Edinburgh Napier University
Year: 2021

description: “Change” has never been as drastic as in 2020 compared to previous years. Technological advancements have always been a major driving force for changes in many high-tech companies. The escalating trade wars between the US & China, Hong Kong / China sovereignty and the Brexit have caused major disruption in the global markets and supply chains. The Covid-19 pandemic had become the latest catalyst in propelling technology adoption such as video conferencing, e-learning, contactless transactions, online-shopping etc. All these events are compelling Singapore companies to hasten innovations and change their old ways of operation. The study of change is not new with much literature, journals and models developed. While previous studies are mainly directed at the top & middle management level, what set this research apart from most studies is that it focuses on blue-collar workers in the Singapore Semiconductor sector. The aim of this research was to explore Singapore’s bluecollar worker perceptions on organizational change management approaches in the semiconductor industry. Swift transformational change brought about by disruptive innovations and companies wanting to survive from competition can result in opposition among these workers expressed as resistance to change. Resistance to change is an important factor during organizational change. Hence, understanding their perceptions and response to change can aid stakeholders in their planning and execution of change initiatives.
Adopting a post-positive philosophical paradigm, cross-sectional mixed-methods design, the study captured both statistical and contextual data. It was an appropriate strategy as it achieved triangulation of the findings with multiple types of data. Using 3 analytical approaches, it was found that Group Dynamics among the blue-collar workers is a critical consideration for change. While Training, Participation, and Communication were found to invoke positive perceptions and reduce resistance to change, the study revealed deeper contextual interpretations and their influencing effects towards blue-collar workers. It was found that workers with between 1 to 5 years of experience in the semiconductor industry have the highest tendency to resign compared to other groups. Contrary to many studies, workers display more openness and lower resistance to change as they age. Recommendations are made according to the findings. Recommendations were also made for future researches as more research is needed to understand this vulnerable group.
Cerenkov light identification with Si low-temperature detectors with Neganov-Luke effect-enhanced sensitivity
Creators: name: Gironi, L.
name: Biassoni, M.
name: Brofferio, C.
name: Capelli, S.
name: Carniti, P.
name: Cassina, L.
name: Clemenza, M.
name: Cremonesi, O.
name: Faverzani, M.
name: Ferri, E.
name: Fossati, E.
name: Giachero, A.
name: Giordano, C.
name: Gotti, C.
name: Maino, M.
name: Margesin, B.
name: Moretti, F.
name: Nucciotti, A.
name: Pavan, M.
name: Pessina, G.
name: Pozzi, S.
name: Previtali, E.
name: Puiu, A.
name: Sisti, M.
name: Terranova, F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A new generation of cryogenic light detectors exploiting Neganov-Luke effect to enhance the thermal signal has been used to detect the Cherenkov light emitted by the electrons interacting in TeO$_{2}$ crystals. With this mechanism a high significance event-by-event discrimination between alpha and beta/gamma interactions at the $^{130}$Te neutrino-less double beta decay Q-value - (2527.515 $\pm$ 0.013) keV - has been demonstrated. This measurement opens the possibility of drastically reducing the background in cryogenic experiments based on TeO$_{2}$.
Progress in a-Si/a-Si Tandem Junction Thin Film Solar Modules
Creators: name: Lechner, P.
name: Frammelsberger, W.
name: Psyk, W.
name: Reuner, J.
name: Geyer, R.
name: Dandl, S.
name: Haslauer, A.
name: Berginski, M.
name: Maurus, H.
name: Lundszien, D.
name: Wagner, H.
name: Renno, M.
name: Popp, H.
name: Erbe, C.
name: Koster, H.
name: Weidl, R.
name: Diegel, E.
name: Bartholome, P.
name: Eichhorn, B.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Thin Films Solar Cells
Amorphous and Microcrystalline Silicon Solar Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2390-2393
description: SCHOTT Solar Thin Film has successfully brought her a-Si/a-Si tandem cell technology for ASITM
modules to full production. The production site in Jena with a capacity of 35 MW/a started end of 2007 and ramp
up was completed in 2008. Due to continuous process improvements the initial power of the best module could be
improved to 127 W which corresponds to 9.4 % initial aperture efficiency. Indoor and outdoor light induced
degradation of the 1.4 m² modules is demonstrated to be reproducible around 18 %. Recently a new power class
with stabilized 103 W could be introduced. Best small area development cells stabilize at 8.5 % which give the
near term perspective of 110 W stable module power or 8 % module aperture area efficiency. A round robin
comparison together with various institutes shows a high degree of reproducibility and accuracy for the power
measurement of stabilized ASITM modules within +/- 1 %. Long term monitoring of some of our early PV
installations demonstrates an excellent stability over more than one decade. Schott ASITM modules with thermally
isolated rear side reveal a significant annealing effect and show an improved PR of up to 4 %.
How Spirals and Gaps Driven by Companions in Protoplanetary Disks Appear in Scattered Light at Arbitrary Viewing Angles
Creators: name: Dong, Ruobing
name: Fung, Jeffrey
name: Chiang, Eugene
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Direct imaging observations of protoplanetary disks at near-infrared (NIR) wavelengths have revealed structures of potentially planetary origin. Investigations of observational signatures from planet-induced features have so far focused on disks viewed face-on. Combining 3D hydrodynamics and radiative transfer simulations, we study how the appearance of the spiral arms and the gap produced in a disk by a companion varies with inclination and position angle in NIR scattered light. We compare the cases of a $3M_{\rm J}$ and a $0.1M_{\odot}$ companion, and make predictions suitable for testing with Gemini/GPI, VLT/NACO/SPHERE, and Subaru/HiCIAO/SCExAO. We find that the two trailing arms produced by an external perturber can have a variety of morphologies in inclined systems - they may appear as one trailing arm; two trailing arms on the same side of the disk; or two arms winding in opposite directions. The disk ring outside a planetary gap may also mimic spiral arms when viewed at high inclinations. We suggest potential explanations for the features observed in HH 30, HD 141569 A, AK Sco, HD 100546, and AB Aur. We emphasize that inclined views of companion-induced features cannot be converted into face-on views using simple and commonly practiced image deprojections.
description: Accepted to ApJ
Operational Experience of PV Water-Pumping System in Armenia
Creators: name: Ayvazyan, K.G.
Publisher: name: WIP
Year: 2011
Subjects: PV Systems
Off-grid Applications

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 4129-4130
description: PV water-pumping system and data acquisition system were installed in Yerevan city (Armenia) for
evaluating and analyzing performance of water-pumping system, according to the overall effect of environment
conditions on their operation characteristics. The overall performances of PV water-pumping system were analyzed and
evaluated during several months. The conclusion of this study is that PV water-pumping system with solar tracking can
be practically and economically used in various operations in Armenia.