cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
5” Laser-IBC Solar Cells with 22.0% Efficiency
Creators: name: Hoffmann, E.
name: Dahlinger, M.
name: Carstens, K.
name: Wansleben, S.
name: Zapf-Gottwick, R.
name: Werner, J.H.
Publisher: name: WIP
Year: 2016
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cells Improvements and Innovation

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 580-582
description: This contribution presents our latest progress on 5x5 inch solar cells yielding a maximum efficiency  = 22.0%. The cell process utilizes four laser irradiation steps for emitter and back surface doping as well as for the ablation of the rear passivation layer and structuring of the metallization. The improvement from the previously measured  = 20.8% is achieved by busbar-tapering, improved cleaning and higher area utilization. Photolumines-cence proves the homogeneity and accuracy of all four laser processes. Electroluminescence illustrates the improve-ment achieved by the tapered of the busbars and suggests that even higher efficiencies will be possible.
Insights into protein-lipid interactions by structural mass spectrometry
Creators: name: Pyle, Euan
Publisher: name: Imperial College London
Year: 2019

description: Interactions with membrane lipids have long been known to affect a wide range of membrane protein properties including folding, stability, and function. Our understanding of the precise molecular basis of these interactions is currently limited. Here, we combine mass spectrometry (MS)-based techniques with molecular dynamics (MD) simulations, in vivo biochemical assays, and other biophysical techniques to characterise how protein-lipid interactions affect the oligomerisation, conformation, and function of the structurally related xanthine/uric acid transporter UapA from Aspergillus nidulans and the boron transporter BOR1 from Saccharomyces cerevisiae (ScBOR1p). Using native MS and lipidomics, we found that UapA requires phosphatidylethanolamine or phosphatidylinositol binding to form the physiological dimer. A putative lipid binding site at the dimer interface was identified using MD simulations. Lipid binding at this site is essential for formation of functional UapA dimers. Similar analysis of ScBOR1p revealed that this protein is primarily monomeric in detergent-based solution and that phosphatidylethanolamine or phosphatidylserine binding is also essential for its dimerization. Mutation of a putative lipid binding site in ScBOR1p results in loss of lipid-induced dimer formation but has no effect on transport function. Thus, the lipids play slightly different roles in UapA and ScBOR1p. Additional research probed the conformational dynamics of UapA in different lipid compositions using hydrogen-deuterium exchange MS (HDX-MS). The results revealed that protein-lipid interactions stabilise the mobile domain of UapA responsible for substrate transport. HDX-MS also revealed how substrate binding stabilises the inward facing conformation of UapA and that specific mutations stabilise the outward facing conformation of UapA. Together, this work represents the first detailed analyses of the interactions between eukaryotic membrane transporters and their associated lipids.
The prevalence of psychoactive drug administration for psychiatric disorders or behavioural problems amongst adults with an intellectual disability
Creators: name: Birgden, Astrid.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Pilot Production of 6” IBC Solar Cells Yielding a Median Efficiency of 23% with a Low-Cost Industrial Process
Creators: name: Li, Z.
name: Yang, Y.
name: Zhang, X.
name: Liu, W.
name: Chen, Y.
name: Xu, G.
name: Shu, X.
name: Chen, Y.
name: Altermatt, P.P.
name: Feng, Z.
name: Verlinden, P.J.
Publisher: name: WIP
Year: 2016
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cells Improvements and Innovation

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 571-574
description: The results of pilot production of Interdigitated Back Contact (IBC) solar cells at Trina Solar with a low-cost industrial process are presented. The 6” IBC pilot line was established in 2015 and continuous improvements were implemented over one year. In recent batches, the median cell efficiency has reached 23.0%, and the best cell efficiency was 23.2%. Advanced IBC cells with finer geometries and smaller contacts reached an efficiency of 23.5%. Further cell efficiency improvements and cost reduction are under development.
Two-Dimensional Characterization of Phosphorus-Implanted Emitter and Phosphorus-Diffused Emitter of Silicon Solar Cell Using Super-Higher-Order Scanning Nonlinear Dielectric Microscopy
Creators: name: Hirose, K.
name: Tanahashi, K.
name: Takato, H.
name: Chinone, N.
name: Cho, Y.
Publisher: name: WIP
Year: 2016
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Characterisation and Modelling

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 527-530
description: Two-dimensional carrier distributions in phosphorus (P)-implanted emitter and P-diffused emitter were
analyzed using super-higher-order scanning nonlinear dielectric microscopy (SHO-SNDM). The carrier distribution
was clearly visualized and quantified using calibration sample. P-type, n-type and depletion layer was discriminated
from local capacitance-voltage characterization obtained from SHO-SNDM measurement. The n-type region and
depletion layer distribution depended on the surface texture. The position of p-n junction was estimated to be near the
p-type region in depletion layer. The n-type region and depletion layer in P-implanted emitter were thicker than those
in P-diffused emitter. Experimental results indicate that SHO-SNDM gives the detailed analysis of carrier distribution
and is useful method for evaluation of solar cell.
A Simulation Study of Resistive Effect of Tunnel Junction Rear Contacts in Bifacial n-PERT Silicon Solar Cells
Creators: name: Wei, C.-M.
name: Lin, Y.-H.
name: Li, C.-C.
name: Chung, C.-C.
Publisher: name: WIP
Year: 2016
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Characterisation and Modelling

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 531-534
description: The resistive effect of tunnel junction (TJ) contacts to the rear side of bifacial n-PERT Si solar cells has been investigated by simulation with the implementation of a quantum tunneling model. By placing an ultra-thin oxide layer between the BSF and the metal fingers, we calculated, respectively, the TJ resistivity (from a separate MOS structure) and the electrical properties of the cell as a function of oxide thickness w. As expected for a tunneling process, the TJ resistivity is nearly unchanged for w ≤ 10 Å and increases exponentially when w ≥ 10 Å. Because of the power dissipation introduced by the TJ resistance, the efficiency loss as w increases is mainly dictated by the loss of FF for w ≤ 17 Å. With w being further increased, the deterioration of JSC becomes more pronounced, giving an additional loss of efficiency. However, since the exact dependence of passivation quality on w is lacking, a constant SRV value at the SiO2/Si interface is assumed for all w’s. As a result, VOC is practically not affected. If such a dependence for a specific passivation process is learned and implemented in the model, our method could be helpful in optimizing solar cell properties.
From the viscous Cahn-Hilliard equation to a regularized forward-backward parabolic equation
Creators: name: Colli, Pierluigi
name: Scarpa, Luca
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35K55, 35K50, 35B25, 35D30, 74N25

description: A rigorous proof is given for the convergence of the solutions of a viscous Cahn-Hilliard system to the solution of the regularized version of the forward-backward parabolic equation, as the coefficient of the diffusive term goes to 0. Non-homogenous Neumann boundary condition are handled for the chemical potential and the subdifferential of a possible non-smooth double-well functional is considered in the equation. An error estimate for the difference of solutions is also proved in a suitable norm and with a specified rate of convergence.
description: Key words and phrases: Cahn-Hilliard system, forward-backward parabolic equation, viscosity, initial-boundary value problem, asymptotic analysis, well-posedness
Quantifying spatio-temporal variation in malaria transmission in near elimination settings using individual level surveillance data
Creators: name: Routledge, Isobel
Publisher: name: Imperial College London
Year: 2019

description: As countries move towards malaria elimination, tracking progress through quantifying changes in transmission over space and time is key. This information is necessary to effectively target resources to remaining ‘hotspots’ (high-risk locations) and ‘hotpops’ (high-risk populations) where transmission remains, decide if and when it is appropriate to scale back interventions, and to evaluate the success of existing interventions. However, as countries approach zero cases, it becomes difficult to measure transmission. Traditional metrics, such as the prevalence of parasites in the population, are no longer appropriate due to small numbers and increasingly focal distributions of cases over space and time. In order to address this, this thesis developed Bayesian network inference approaches to utilise information about the time and location of cases showing symptoms of malaria to jointly infer the likelihood that a) each observed case was linked to another by transmission and b) that a case was infected by an external, unobserved source. This information was used to calculate individual reproduction numbers for each reported case, or how many new cases of malaria are expected to have resulted from each case. In elimination settings, quantifying the distribution of individual reproduction numbers provides useful information about how quickly a disease may die out, and how the introduction of new cases through importation may affect ongoing transmission. These estimates were incorporated into additive regression models as well as geostatistical models to map how malaria transmission varied over space and time as well as considering timelines to elimination and the likelihood of resurgence of transmission once zero cases is achieved. This approach was applied to previously unanalysed individual-level datasets of malaria cases from China and El Salvador.
A qualitative analysis of loss-related memories after cancer loss: a comparison of bereaved people with and without prolonged grief disorder
Creators: name: Smith, Kirsten V.
name: Rankin, Harriet
name: Ehlers, Anke
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Objective: The study aimed to explore the content and features of loss-related memories in a sample of individuals bereaved by cancer with and without a probable diagnosis of prolonged grief disorder/persistent complex bereavement disorder (PGD/PCBD). Methods: Semi-structured interviews with 28 bereaved adults (PGD/PCBD = 12, NoPGD/PCBD = 16) were analysed using thematic analysis. Results: Three superordinate themes were identified: (1) intrusive imagery, (2) qualities of memory, and (3) triggers. Results showed that individuals suffering from probable PGD/PCBD reported a predominance of negative and upsetting memories, happy memories triggering pain and more negative intrusive imagery than those without PGD/PCBD. Conclusions: Bereavement by cancer can result in troubling intrusive memories that overshadow positive memories. Sufferers of PGD/PCBD are more likely to experience loss-related memories as negative and upsetting. Clinical approaches that utilise memory processing may be of particular relevance in this group.
Single charge-current in a normal mesoscopic region attached to superconductor leads via a coupled Poisson Non-equilibrium Green Function formalism
Creators: name: Verrilli, David
name: Marin, F. P.
name: Rangel, Rafael
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the I-V characteristic of mesoscopic systems or Quantum dot attached of a pair of superconducting leads. Interaction effects in the quantum dot are considered through the charging energy of the quantum dot; the treatment of such effects are considered within a Poisson-non-equilibrium function scheme.
Modelling and Characterization of Multicrystalline Silicon Blocks by Quasi-Steady-State Photoconductance
Creators: name: Goodarzi, M.
name: Chung, D.
name: Mitchell, B.
name: Trupke, T.
name: Sinton, R.A.
name: Macdonald, D.
Publisher: name: WIP
Year: 2016
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Characterisation and Modelling

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 535-538
description: A detailed knowledge of the distributions of carrier lifetimes, impurities and crystal defects in silicon ingots is key for understanding and improving wafer quality, as well as solar cell processing steps. In this work, we have applied a quasi-steady-state photoconductance tester developed for use on ingots for the measurement of lifetimes and dissolved iron concentrations along a p-type multicrystalline silicon block. The iron concentrations are determined by lifetime measurements taken before and after flashing the block to break the iron-boron pairs. The measured iron profile along the block is in qualitative agreement with those reported in previous work, and conforms to the expected trend due to impurity segregation. The impact of non-uniform carrier profiles during the block measurements on the extraction of the Fe profiles are discussed and quantified based on simulations of the quasi-steady-state measurement conditions. The lifetimes are also compared with a calibrated photoluminescence image on the same block, which shows similar qualitative trends, but lower magnitudes due to the lower injection level in the photoluminescence measurement.
Light Induced Degradation in PERC Solar Cells and Comparison with OxyMap
Creators: name: Arumughan, J.
name: Martel, B.
name: Raymond, G.
name: Schmitt, S.
name: Theobald, J.
name: Picoulet, C.
name: Brun, X.
name: Kopecek, R.
Publisher: name: WIP
Year: 2016
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Characterisation and Modelling

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 545-549
description: The PERC solar cells performances fabricated using different base resistivities and oxygen concentrations are found to be correlated. Samples with [Oi] concentration of 10.69 ppma and a base resistivity of 1.75 Ω cm reaches median efficiency of 19.4%. Samples with similar [Oi] concentration, but higher base resistivity have lower median efficiencies, between 19.1% and 19.3%. However samples with base resistivity 1.5 Ω cm and [Oi] concentration over 12 ppma reaches lowest efficiency. The OxyMap measurements were performed on twin wafers. The FTIR [Oi] measurements and OxyMap measurements are comparable. The LID prediction results are in trend with the measured LID on PERC solar cells.
Lecture notes: Astrophysical fluid dynamics
Creators: name: Ogilvie, Gordon I.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: These lecture notes and example problems are based on a course given at the University of Cambridge in Part III of the Mathematical Tripos. Fluid dynamics is involved in a very wide range of astrophysical phenomena, such as the formation and internal dynamics of stars and giant planets, the workings of jets and accretion discs around stars and black holes, and the dynamics of the expanding Universe. Effects that can be important in astrophysical fluids include compressibility, self-gravitation and the dynamical influence of the magnetic field that is 'frozen in' to a highly conducting plasma. The basic models introduced and applied in this course are Newtonian gas dynamics and magnetohydrodynamics (MHD) for an ideal compressible fluid. The mathematical structure of the governing equations and the associated conservation laws are explored in some detail because of their importance for both analytical and numerical methods of solution, as well as for physical interpretation. Linear and nonlinear waves, including shocks and other discontinuities, are discussed. The spherical blast wave resulting from a supernova, and involving a strong shock, is a classic problem that can be solved analytically. Steady solutions with spherical or axial symmetry reveal the physics of winds and jets from stars and discs. The linearized equations determine the oscillation modes of astrophysical bodies, as well as determining their stability and their response to tidal forcing.
description: 94 pages, 23 figures, to be published in the Journal of Plasma Physics (JPP Lecture Notes)
Polar varieties revisited
Creators: name: Piene, Ragni
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We recall the definition of classical polar varieties, as well as those of affine and projective reciprocal polar varieties. The latter are defined with respect to a non-degenerate quadric, which gives us a notion of orthogonality. In particular we relate the reciprocal polar varieties to the "Euclidean geometry" in projective space. The Euclidean distance degree and the degree of the focal loci can be expressed in terms of the ranks, i.e., the degrees of the classical polar varieties, and hence these characters can be found also for singular varieties, when one can express the ranks in terms of the singularities.
description: 12 pages
Co-Diffusion for p-Type PERT Solar Cells Using APCVD BSG Layers as Boron-Doping Source
Creators: name: Meier, S.
name: Wiesnet, S.
name: Mack, S.
name: Werner, S.
name: Maier, S.
name: Unmüßig, S.
name: Demberger, C.
name: Knauss, H.
name: Biro, D.
name: Wolf, A.
Publisher: name: WIP
Year: 2016
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cells Improvements and Innovation

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 565-570
description: In this work, we investigate boron-doped back surface field (BSF) formation from borosilicate glass (BSG) deposited by atmospheric pressure chemical vapor deposition (APCVD). Carrier lifetime samples with different boron concentration in the BSG are exposed to high-temperature processes with varying temperature and gas atmospheres. The development aims at producing p-type Si-based passivated emitter and rear totally diffused (PERT) cells in a POCl3 co-diffusion process. Our experiments confirm the critical impact of the O2 concentration on boron diffusion from APCVD BSG layers. For different peak temperatures Si surface oxidation formation need to be balanced carefully. Moderate diffusion temperatures of 875°C (30 min) yield a BSF doping with Rsh = 131 Ω/sq and a recombination current density of J0,BSF = 21 fA/cm² (planar surface, AlOx/SiNx-passivation). Finally, 156 mm sized PERT cells fabricated from p-type Czochralski-grown Si wafers using the developed co-diffusion process show peak efficiencies of 20.6%, confirming the feasibility of our co-diffusion approach.
Significados que los niños, niñas y adolescentes de la Fundación Semillas de Esperanza y sus familias le otorgan al trabajo infantil, una mirada desde su experiencia, Cartagena de Indias, año 2022.
Creators: name: Barrios De Oro, Brenda María
Publisher: name: Universidad de Cartagena
Year: 2022
Subjects: subject: Trabajo infantil - Cartagena
subject: Trabajo infantil - Aspectos sociales
subject: Investigación cualitativa - Análisis de datos

description: Este proyecto tiene como objeto abordar el fenómeno del trabajo infantil debido a que es considerado como toda actividad que priva a los menores de edad de su niñez, su potencial y su dignidad, por lo tanto, es una forma de violencia contra niños, niñas y adolescentes que vulnera sus derechos, limita su plan de vida y su desarrollo físico y psicológico. Dada la naturaleza del fenómeno se hace necesario hacer atención integral a la problemática, desplegando acciones tendientes a la comprensión del mismo y a la eliminación de sus causas generadoras. Por lo tanto, a través de esta investigación se busca comprender cuales son los significados que niños, niñas y adolescentes de la Fundación Semillas de Esperanza y sus familias le otorgan al trabajo infantil, con el fin de crear estrategias de intervención social tendientes a transformar patrones culturales a través de la sensibilización a padres, madres y\o cuidadores de los beneficiarios de la modalidad sobre el trabajo infantil y crianza positiva.
Mechanical energy fluxes associated with saturated coronal heating in M dwarfs: comparison with predictions of a turbulent dynamo
Creators: name: Mullan, D. J.
name: MacDonald, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Empirically, the X-ray luminosity LX from M dwarfs has been found to have an upper limit of about 0.2% of the bolometric flux Lbol. In the limit where magnetic fields in M dwarfs are generated in equipartition with convective motions, we use stellar models to calculate the energy flux of Alfven waves FA as a function of depth in the sub-surface convection zone. Since Alfven waves have the optimal opportunity for wave modes to reach the corona, we suggest that FA sets an upper limit on the mechanical flux Fmech which causes coronal heating. This suggestion accounts quantitatively for the saturated values of LX/Lbol which have been reported empirically for M dwarfs.
description: Accepted by the Astrophysical Journal
Situation and participant characteristics, prison strain and collusion in prison hostage takings
Creators: name: Bond, Carol A
Publisher: name: Cardiff Metropolitan University
Year: 2022
Subjects: Forensic psychology
Personality and individual differences
Social psychology

description: Hostage taking in prisons in England and Wales presents risks to both staff and prisoners and understanding such incidents is important to inform the development of appropriate management tactics and strategies. There has been no published data on this topic in over 30 years, moreover current explanations for prison hostage taking inadequately account for the behaviour observed by prison staff. This thesis aims to fill the gap by addressing three main areas, i) exploring the situational and participant characteristics of prison hostage incidents, ii) considering prison hostage incidents as a type of prison indiscipline influenced by prison strain and iii) examining the phenomenon of collaboration (collusion) between participants, framing it as a form of co-offending. Using secondary data from Her Majesty’s Prison and Probation Service* (HMPPS) incident recording system, all hostage incidents in prisons in England and Wales were analysed, using descriptive and inferential statistics. The results revealed strong parallels between community and prison incidents and systematic differences between perpetrators, hostages and those who collude. Furthermore, there are associations between variables linked to prison strain and the incidence of hostage takings. The study concludes that prison hostage takings and collusion can be thought of as a response to prison strain, providing an explanation consistent with the instrumental/expressive continuum used to explain community incidents. Implications for professional practice are discussed and recommendations for further research are made.
Modal analysis of low order thermoacoustic systems
Creators: name: Sogaro, Francesca M.
Publisher: name: Imperial College London
Year: 2019

description: Thermoacoustic instabilities that arise in the context of lean premixed combustion are a major challenge in the development of gas turbines and aero engines. This thesis contributes to the research on modal analysis of thermoacoustic instabilities by applying linear stability analysis and sensitivity analysis of longitudinal thermoacoustic modes within a low order network model framework. The first part of the thesis is dedicated to the better understanding of different types of modes, particularly the interplay between classical acoustic modes and intrinsic thermoacoustic (ITA) modes in a simple thermoacoustic system. Anticorrelated modal sensitivities are found to arise due to a pairwise interplay between acoustic and ITA modes. The magnitude of the sensitivities increases as the interplay between the modes grows stronger. The results show a global behaviour of the modes linked to the presence of exceptional points in the spectrum. Non-normal behaviour and its consequences are also investigated in this setup. The use of sensitivity information is shown to be capable of quantitatively assess the degree of coupling and decoupling of the thermoacoustic modes \francol{from} the acoustic components of a simplified geometry. The investigation shows the effect of an area expansion on the modes of a thermoacoustic tube. The last part of the thesis proposes an optimisation procedure based on the sensitivity information to identify the optimal volume and placement of dampers, which are used to damp thermoacoustic oscillations.
Tomography of evolved star atmospheres
Creators: name: Kravchenko, Kateryna
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Cool giant and supergiant stars are among the largest and most luminous stars in the Universe and, therefore, dominate the integrated light of their host galaxies. These stars were extensively studied during last few decades, however their photometric variability and mass loss are still poorly constrained. The atmospheres of evolved stars are characterized by complex dynamics due to different interacting processes, such as convection, pulsation, formation of molecules and dust, and the development of mass loss. These dynamical processes impact the formation of spectral lines producing their asymmetries and Doppler shifts. Thus, by studying the line-profile variations on spatial and temporal scales it is possible to reconstruct atmospheric motions in stars and link them to the photometric variability and mass loss. The tomographic method, which is based on the cross-sectioning through the stellar atmosphere and recovering the velocity field for each atmospheric slice, is an ideal technique for this purpose. We present the tomographic method and its application to spectroscopic and spectro-interferometric observations of giant and supergiant stars as well as to state-of-the-art three-dimensional numerical simulations to constrain their atmospheric motions on spatial and temporal scales and better understand respective mechanisms responsible for their photometric variability and mass loss.
description: Published on the Hypatia Colloquium 2022 book of proceedings
Frechet differentiability of molecular distribution functions II. The Ursell function
Creators: name: Hanke, Martin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: For a grand canonical ensemble of classical point-like particles at equilibrium in continuous space we investigate the functional relationship between a stable and regular pair potential describing the interaction of the particles and the thermodynamical limit of the Ursell or pair correlation function. For certain admissible perturbations of the pair potential and sufficiently small activity we rigorously establish Frechet differentiability of the Ursell function in the $L^1$ norm. Furthermore, concerning the thermodynamical limit of the pair distribution function we explicitly compute its Fréchet derivative as a sum of a multiplication operator and an integral operator.
description: 19 pages
Sistematización de la experiencia de Intervención Social: Aprendizaje entre pares desde una estrategia de apadrinamiento con estudiantes de grado 10 y 6 de la Institución Educativa Soledad Acosta de Samper, Cartagena de Indias. Año 2022
Creators: name: Garcia Ballestero, Maria Jose
Publisher: name: Universidad de Cartagena
Year: 2022
Subjects: subject: Pandemia - Aspectos sociales
subject: Multimedia Interactiva en la Educación
subject: Educación en trabajo social

description: Este proyecto tiene como objeto mantener el nivel educativo de los estudiantes en un nivel óptimo. Sin embargo, este proceso puede verse afectado por factores externos que imposibilitan mantener esa estabilidad educativa, ya sean familiares o escolares. El programa de intervención de Trabajo Social en la Institución Educativa Soledad Acosta De Samper, estuvo basado en la implementación de una estrategia que permitiera el cambio social, promoviendo de tal manera la disminución de la problemática del rendimiento académico de los estudiantes de 6 grado de la institución. Los factores más visibles que influyeron en el bajo rendimiento escolar fueron el cambio de modalidad en la educación, debido a la pandemia mundial del COVID-19, la cual atenta en contra de la vida de las personas.
Why Multi-Busbars and Future Emitters Require Further Shrinking of Finger Line Width
Creators: name: Koduvelikulathu, L.J.
name: Lossen, J.
name: Rudolph, D.
name: Matusovsky, M.
name: Dishon, G.
Publisher: name: WIP
Year: 2016
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Characterisation and Modelling

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 550-554
description: Co-development of silver printing pastes, screens with finer meshes, and advanced printing machines, enabled for a steady shrinkage of finger widths. Advancement on glass frits allowed for contacting of lower doped emitters, improving the cell parameters from the better passivation and low Auger recombinations of these advanced emitters. We evaluate in this paper, what the optimum finger line width would be, for cells having high number of busbars and advanced emitters. A grid optimization study is performed on standard reference p-type PERC using GRIDDLER software, varying finger line widths and aspect ratio for the different number of busbars. An optimum finger width is obtained for a given number of busbar and finger aspect ratio, beyond which further smaller finger line widths, the cell efficiency drops due to the large number of fingers required which results in increased optical shading and voltage losses. With advance emitters (high sheet resistance) similar observations are made. In other words, it is advantageous to have fine finger line widths for cells with high number of busbars and advanced emitters. Further, we show using the patented novel Pattern transfer technology (PTPTM) very small finger line widths with good aspect ratio can be achieved. PTPTM is a non-contact printing technology based on laser transfer hence has the potential to overcome the limitations of screen printing technology and increase cell performance in the future.
Contributions to integrated modelling of stormwater flooding
Creators: name: Pina, Rui Daniel Da Silva
Publisher: name: Imperial College London
Year: 2019

description: Urban stormwater models cover the main physical processes related with stormwater along urban catchments, from runoff generation to routing along overland surface and flow in the sewer networks. These models have been widely used to manage drainage networks in urban areas and have been increasing application for the analysis of floods in urban areas. Urban stormwater models are based on coupling three main modules: rainfall-runoff, overland flow and sewer flow. The rainfall-runoff transform inputs such as rainfall into runoff, which is then applied to the overland flow module to route over the urban surface area or applied to the sewer flow module which represent the flow in the sewer system. The present research intends to improve urban stormwater modelling tools, with respect to the analysis of different overland modules setup and formulations, and their interactions with sewer flow modules. The overland module setup can be based on semi-distributed models where rainfall is applied to subcatchments, or fully distributed models where rainfall is applied directly to the overland surface in the overland module; These two different overland modules setup were compared based on two real models implemented in InfoWorks ICM and a model setup that enabled their direct comparison. The interactions between the overland and sewer flow modules were analysed with an innovative approach to delineate stochastic flood hazard maps considering operational conditions of sewer inlets. The overland module was also formulated with the proposed Quasi-2D concept that to represent continuous surfaces based on a 1D scheme.
Degradation and Regeneration in mc-Si After Different Gettering Steps
Creators: name: Zuschlag, A.
name: Skorka, D.
name: Hahn, G.
Publisher: name: WIP
Year: 2016
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cells Improvements and Innovation

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 498-503
description: Light and elevated temperature induced degradation (LeTID) affects significantly the performance of multicrystalline (mc) Si PERC solar cells, and underlying mechanisms of LeTID are still unknown. In this work LeTID and following regeneration of an industrial mc-Si PERC solar cell is compared to differently processed minority charge carrier lifetime samples under illumination (1 sun) and elevated temperature (75°C).
LeTID on cell level reveals the same kinetics compared to lifetime samples. Varying the processing sequence has a significant effect on LeTID of lifetime samples. Ungettered samples with fired SiNx:H surface passivation show a very strong LeTID and regeneration effect, with degradation kinetics being similar for all wafer areas irrespective of initial material quality. In contrast, regeneration sets in earlier in good quality areas.
Differently gettered samples are less sensitive to LeTID, while overall degradation and regeneration behaviour is strongly influenced by applied gettering sequences. Al-gettered samples show a more pronounced degradation effect than P-gettered samples, leading to the assumption that P-gettering is more effective in the reduction of LeTID sensitive defects.
A model is presented, describing LeTID in boron as well as gallium doped mc-Si being based on impurities that can be gettered and redistributed during high temperature steps.
Modelling the Long-Term Behaviour of Boron-Oxygen Defect Passivation in the Field Using Typical Meteorological Year Data (TMY2)
Creators: name: Hallam, B.
name: Bilbao, J.
name: Payne, D.
name: Chan, C.
name: Kim, M.
name: Chen, D.
name: Gorman, N.
name: Abbott, M.
name: Wenham, S.
Publisher: name: WIP
Year: 2016
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Characterisation and Modelling

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 555-559
description: The theoretical long-term stability of modules with prior boron-oxygen defect passivation and the in-situ passivation of boron-oxygen defects in the field are investigated using typical meteorological year (TMY2) data for locations of Hamburg, Sydney, Tucson and Wuhan. Results show that a worst-case scenario of the long-term stability for ground-mounted systems installed in desert locations, destabilisation of the passivated boron-oxygen defects is of no concern within 40 years. It is also shown that roof-top photovoltaic systems with a 100 mm air gap and building integrated photovoltaic systems with no ventilation will be more prone to a potential destabilisation of the passivated defects rather than large centralised field arrays with ground-mounted systems due to the higher module operating temperatures. The modelling presented is supported by experimental data, with no de-stabilisation occurring for extended light-soaking (1000 hours at 70 °C or 400 hours at 160 °C). A best-case scenario is also shown for the potential of defect passivation in the field, showing a strong dependence on the location, mounting structure, and date of installation. In open circuit, a rapid passivation can occur within days for locations such as Sydney if installed in summer, whilst in cool climates, passivation can take several months.
On a question of Etnyre and Van Horn-Morris
Creators: name: Ito, Tetsuya
name: Kawamuro, Keiko
Publisher: name: arXiv
Year: 2016
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We answer Question 6.12 in the paper "Monoids in the mapping class group" written by Etnyre and Van Horn-Morris.
description: 5 pages, 1 figure
An exploration of job scope/satisfaction occupational stress and personal strain for prison officers employed in a maximum security facility : a comparison of two prison regimes
Creators: name: Kibel, Marcus.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Efficient heat-bath sampling in Fock space
Creators: name: Holmes, Adam
name: Changlani, Hitesh J.
name: Umrigar, C. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We introduce an algorithm for sampling many-body quantum states in Fock space. The algorithm efficiently samples states with probability approximately proportional to an arbitrary function of the second-quantized Hamiltonian matrix element connecting the sampled state to the current state. We apply the new sampling algorithm to the recently-developed Semistochastic Full Configuration Interaction Quantum Monte Carlo method (S-FCIQMC), a semistochastic implementation of the power method for projecting out the ground state energy in a basis of Slater determinants. The heat-bath sampling requires modest additional computational time and memory compared to uniform sampling but results in newly-spawned weights that are approximately of the same magnitude, thereby greatly improving the efficiency of projection. A comparison in efficiency between uniform and approximate heat-bath sampling is performed on the all-electron nitrogen dimer at equilibrium in Dunning's cc-pVXZ basis sets with X in {D, T, Q, 5}, demonstrating a large gain in efficiency that increases with basis set size. In addition, a comparison in efficiency is performed on three all-electron first-row dimers, B_2, N_2, and F_2, in a cc-pVQZ basis, demonstrating that the gain in efficiency compared to uniform sampling also increases dramatically with the number of electrons.
Economia familiar y finanzas personales determinantes que inciden en el desempeño laboral.
Creators: name: Silva Aguirre, Maylen Irina
Publisher: name: Universidad de Cartagena
Year: 2022
Subjects: subject: Trabajo - Aspectos psicológicos
subject: Emociones - Aspectos psicológicos
subject: Economía - Aspectos psicológicos

description: Este proyecto tiene como objeto mostrar el trabajo social como generador de transformaciones y desarrollador de procesos a nivel organizacional en donde se promueve el bienestar social del capital humano propiciando crecimiento personal y familiar.La incidencia de los problemas personales y familiares que se manisfiestan dentro de una organización los cuales impactan diferentes momentos la vida de un trabajador y que se ve reflejado en diferentes ambitos de su vida como en el psicologico,comportamientos ,emociones y sentimientos, todo esto se ve reflejado en el ambiente Social y Laboral por tant es importante que se desarrolle estrategias que desarrollen habilidades para mejorar esta situación.
Impact of Al2O3 and SiNx Passivation Layers on LeTID
Creators: name: Kersten, F.
name: Heitmann, J.
name: Müller, J.W.
Publisher: name: WIP
Year: 2016
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cells Improvements and Innovation

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 507-509
description: In this work the carrier lifetime evolution of different passivation layers under illumination and at elevated temperatures are investigated. Multicrystalline silicon lifetime samples were treated by implementing typical industrial processing steps. The degradation was found to depend strongly on surface passivation type, but is independent of the surface doping and oxide charge. The influence of the passivation layer on the silicon bulk lifetime degradation is investigated. After reaching a degradation maximum, the lifetime samples feature a regeneration phase. Long-time degradation measurements without excess carrier injection at elevated temperatures show that the carrier lifetime degrades also in darkness. Capacitance-voltage measurements show that the oxide charge is not influenced by the degradation, but a high decrease in carrier lifetime were measured. Firing experiments show that lifetime samples passivated after firing procedure are not prone to degrade.
A study of the relationship between psychopathy and crime in Australian prisoners
Creators: name: Plumb, Tonya.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Evaluation of Passivated Surface of Silicon with Laser Terahertz Emission Microscope (LTEM)
Creators: name: Mochizuki, T.
name: Ito, A.
name: Nakanishi, H.
name: Mitchell, J.
name: Tanahashi, K.
name: Kawayama, I.
name: Tonouchi, M.
name: Shirasawa, K.
name: Takato, H.
Publisher: name: WIP
Year: 2016
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Characterisation and Modelling

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 510-513
description: Terahertz emission from silicon wafers with silicon-oxide passivation lasers were measured using a
laser terahertz emission microscope (LTEM) with strong correlation between THz waveform and the surface
potential being observed. The surface potential were electrically tuned by an indium-tin oxide transparent electrode
disk on the top and evaluated by capacitance-voltage (C-V) characteristics. The sample were excited by Ti-Sapphire
laser pulses and the waveform of THz emission were measured by the THz time-domain spectroscopy techniques
using LTEM. The observed waveform changed with the external bias and inverted near the flatband voltage, and
changes similar to the C-V characteristics were shown in the peak amplitude. These results indicate that the LTEM
can measure and map the surface band bending of Si by analysing the waveform of THz emission. We expect that the
LTEM can be applied as an optical inspection tools of passivation layers of solar cells.
On the asymptotic stability of steady flows with nonzero flux in two-dimensional exterior domains
Creators: name: Guillod, Julien
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35Q30, 35B35, 76D05

description: The Navier-Stokes equations in a two-dimensional exterior domain are considered. The asymptotic stability of stationary solutions satisfying a general hypothesis is proven under any $L^2$-perturbation. In particular the general hypothesis is valid if the steady solution is the sum of the critically decaying flux carrier with flux $|Φ| < 2π$ and a small subcritically decaying term. Under the central symmetry assumption, the general hypothesis is also proven for any critically decaying steady solutions under a suitable smallness condition.
description: 13 pages
Behaviour and design of structural steel cross-sections in fire
Creators: name: Saari, Nadiah Binti
Publisher: name: Imperial College London
Year: 2019

description: At both room temperature and elevated temperatures, the cross-sectional load-carrying capacity of structural steel members is limited by the effects of local buckling. The strength and stiffness of steel also reduce with temperature and the stress-strain relationship becomes increasingly nonlinear. Current structural fire design codes utilise the concept of cross-section classification and the effective width method in line with the corresponding steel design rules at ambient temperature for the design of steel sections at elevated temperatures; this approach artificially separates structural steel cross-sections into discrete behavioural classes and does not reflect the inherent continuous relationship between the cross-section resistance and its local slenderness. Moreover, the utilization of two different design yield strengths results in further discontinuities in the predicted fire resistances at the boundary between non-slender and slender cross-sections. Existing steel design rules at ambient temperature are also based on an assumed elastic, perfectly plastic stress-strain response, which does not well represent the actual nonlinear stress-strain response of steels at elevated temperatures. A series of experiments to investigate the structural response and failure of cross-sections at room temperature is presented. A deformation-based design approach known as the continuous strength method (CSM), which provides an alternative treatment to the conventional concept of cross-section classification and enables a rational exploitation of strain hardening, is then developed for the design of steel cross-sections at elevated temperatures. Predictions of resistance using the CSM for compression and bending, as well as new proposals for combined loading, have been compared with experimental and numerical results and those obtained using EN 1993-1-2 and AISC 360-16; the CSM predictions are shown to offer higher levels of accuracy and reliability than the current design methods.