cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Affect of TCO Roughening on CdS/CdTe Device Structure
Creators: name: Wakeling, B.R.
name: Lane, D.
name: Painter, J.D.
name: Cousins, M.
name: Rogers, K.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
CIS, CdTe and Other (II-VI) Ternary Thin Film Cells

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2613-2616
description: CdS/CdTe thin film solar cells with a CdS layer grown by chemical bath deposition and a CdTe layer
grown by close space sublimation (CSS) have been reported to give the highest efficiency for this type of cell [1].
CdTe grown by CSS does not undergo complete recrystallisation during a CdCl2 anneal unlike similar material grown
by electrodeposition. The performance of the device may therefore be dependent on the quality of the as deposited
CdTe, which is in turn dependent on the deposition parameters and the nature of the substrate material. Also, during
device fabrication interdiffusion can occur between the CdTe and CdS layers, with the amount of interdiffusion
affecting device performance. Roughening of the SnO2(F) front contact was used to introduce nucleation sites for
subsequent film growth, and the resulting effect on the CdTe layer was investigated. The structure of completed
CdS/CdTe heterojunctions was examined using X-ray diffraction and scanning electron microscopy.
Formation of Cu(In,Al)Se2 Thin Films Obtained by Selenization of Evaporated Metallic Precursor Layers
Creators: name: López-García, J.
name: Guillén, C.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
CIS, CdTe and Other (II-VI) Ternary Thin Film Cells

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2629-2633
description: CuIn1-xAlxSe2 (CIAS) thin films were grown by a two stage process. Cu, In and Al layers were sequentially
evaporated and subsequently heated with elemental selenium in a quasi-closed graphite box. Different x values
(x>0.4) were obtained by varying the Al and In precursor layers thicknesses. Selenization conditions such as Se
amount provided during the selenization process were adjusted in order to optimize the film properties. Polycrystalline
CuIn1-XAlXSe2 thin films with chalcopyrite structure were obtained. Referred to CuInSe2 thin films the lattice parameters,
the (112) orientation and the average crystallite size decreased and the band gap energy increased with increasing
Al content. The incorporation of Al changed the thin film morphology towards smaller grain sizes and an
open structure less dense. The ternary compound CuAlSe2 was formed in isolated areas and some samples showed
coexistence of CuInSe2 and CuIn1-xAlxSe2 phases.
The Power to Assume Form: Cornelius Castoriadis and Regulative Regimes of Historicity
Creators: name: SEAN MICHAEL MCMORROW
Publisher: name: Monash University
Year: 2020
Subjects: subject: 160609 Political Theory and Political Philosophy
subject: FOS: Political science

description: The thesis analyses the contemporary trend of ‘depoliticisation’ in Western contexts that are indicative of dynamics that are shaping a transition of liberal-democratic societies into newly configured regimes that are laden with new political questions. A theory of historicity is proposed that foregrounds how societies are shaped by implicit forms of instituting power that regulate cultural activity. Based on this theory of historicity, the thesis develops an alternate perspective on the perceived ‘crisis’ of democratic culture in Western contexts.
Excellent Edge Isolation of Crystalline Silicon Solar Cells Obtained by High-Power Picosecond Laser
Creators: name: Haupt, O.
name: Nagel, H.
name: Schütz, V.
name: Kling, R.
name: Bagus, S.
name: Hefner, W.
name: Schmidt, W.
name: Massa, S.
name: Stute, U.
name: Schlenker, T.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1803-1806
description: Picosecond laser sources can ablate Si nearly without melting and hence are a promising alternative
for pn-junction isolation. In this work the shunt resistance and microstructure obtained by a new high-power
picosecond laser source are compared with that of a standard nanosecond laser. As a result, the picosecond laser
creates a threefold higher median shunt resistance at a high number of passes. The observed microstructure is a
strong function of the laser fluence. In the thermal regime, i. e. at laser fluences above 1.1 J/cm², the n+-diffused
layer directly evaporates and the newly created surface is relatively smooth. In the non-thermal regime at laser
fluences below 1.1 J/cm² a very rough microstructure arises and porous SiOx is formed. It is assumed that the
SiOx decreases the conductivity of the topmost Si layer in the laser groove. In both regimes high shunt resistances
can be obtained as confirmed by infrared imaging under reverse bias. In contrast, for cells edge-isolated
by means of the nanosecond-laser parasitic shunting is observed.
Zooming in on Quantum Trajectories
Creators: name: Bauer, Michel
name: Bernard, Denis
name: Tilloy, Antoine
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We propose to use the effect of measurements instead of their number to study the time evolution of quantum systems under monitoring. This time redefinition acts like a microscope which blows up the inner details of seemingly instantaneous transitions like quantum jumps. In the simple example of a continuously monitored qubit coupled to a heat bath, we show that this procedure provides well defined and simple evolution equations in an otherwise singular strong monitoring limit. We show that there exists anomalous observable localised on sharp transitions which can only be resolved with our new effective time. We apply our simplified description to study the competition between information extraction and dissipation in the evolution of the linear entropy. Finally, we show that the evolution of the new time as a function of the real time is closely related to a stable Levy process of index 1/2.
description: 5 pages, 2 figures
Detailed Analysis of High Sheet Resistance Emitters for Selectively Doped Silicon Solar Cells
Creators: name: Book, F.
name: Dastgheib-Shirazi, A.
name: Raabe, B.
name: Haverkamp, H.
name: Hahn, G.
name: Grabitz, P.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1719-1722
description: A selective emitter structure is a promising approach to improve the cell efficiency of industrial type
silicon solar cells by minimizing the losses at the front surface and in the emitter. Selective emitters can be produced
by numerous processing sequences, resulting in different doping profiles. This work focuses on evaluating the
potential of the high sheet resistance emitters that are created by the selective emitter processes developed at the
University of Konstanz (UKN). In these processes, the high sheet resistance emitter is created by a heavy diffusion
and an etchback of the heavily doped surface layer [1, 2], or by a weak diffusion with a subsequent drive-in step
[4, 5]. QSSPC samples were fabricated to evaluate the emitter quality by measuring the emitter saturation current j0E.
On some emitter profiles, SIMS measurements were performed. For the etchback emitter a strong improvement in j0E
can be achieved by etching back a heavily doped emitter, resulting in a highest cell efficiency of 18.9%. For the
drive-in emitter we have shown that the masking SiNX layer should be removed and redeposited after drive-in in
order to obtain a good hydrogen passivation and a low emitter saturation current.
Theory of Superconductivity in Graphite Intercalation Compounds
Creators: name: Takada, Yasutami
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: On the basis of the model that was successfully applied to KC8, RbC8, and CsC8 in 1982, we have calculated the superconducting transition temperature Tc for CaC6 and YbC6 to find that the same model reproduces the observed Tc in those compounds as well, indicating that it is a standard model for superconductivity in the graphite intercalation compounds with Tc ranging over three orders of magnitude. Further enhancement of Tc well beyond 10 K is also predicted. The present method for calculating Tc from first principles is compared with that in the density functional theory for superconductors, with paying attention to the feature of determining Tc without resort to the concept of the Coulomb pseudopotential.
description: 13 pages, 9 figures. Published in Reference Module in Materials Science and Materials Engineering (Saleem Hashmi; editor-in-chief), Oxford: Elsevier; 2016. pp.1-15. ISBN: 978-0-12-803581-8
The Present Status of kWh/kWp Measurements and Modelling
Creators: name: Ransome, S.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 3873-3878
description: Some PV module manufacturers have claimed up to an extra 30% kWh/kWp for their modules than
their competitors but several recent independent tests e.g. [1][2][3] have found a much lower variability between
technologies (mostly within ±4-5%) with measured values being dominated by Pmax.actual/Pmax.nominal[1][2].
These tests have not shown a systematic performance bias towards any manufacturer or technology.
Some commercial PV simulation programs have been found to predict >5% differences in energy yield between
various technologies usually favouring thin films [4]. A study of five programs [4] found that whereas many use the
same 1-diode equation [5] to fit IV curves from the manufacturers’ datasheet values at STC, their modelled
performance vs. irradiance and temperature varied between themselves and they did not always agree with the values
on manufacturers’ datasheets which are measured to standards such as IEC 61215, IEC 61646 and EN
50380[6][7][8]. Discrepancies have been found in their assumptions of Rshunt as a function of irradiance which is
not on the manufacturers’ datasheets and will vary for each module type.
To ensure the most accurate energy yield simulations possible these discrepancies need to be reduced. All
intermediate measurement and calculation stages need to be compared and the uncertainties in calibrations and
measurements better understood [9][10].
Coupling Conceptual and Quantitative Problems to Develop Expertise in Introductory Physics Students
Creators: name: Singh, Chandralekha
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: We discuss the effect of administering conceptual and quantitative isomorphic problem pairs (CQIPP) back to back vs. asking students to solve only one of the problems in the CQIPP in introductory physics courses. Students who answered both questions in a CQIPP often performed better on the conceptual questions than those who answered the corresponding conceptual questions only. Although students often took advantage of the quantitative counterpart to answer a conceptual question of a CQIPP correctly, when only given the conceptual question, students seldom tried to convert it into a quantitative question, solve it and then reason about the solution conceptually. Even in individual interviews, when students who were only given conceptual questions had difficulty and the interviewer explicitly encouraged them to convert the conceptual question into the corresponding quantitative problem by choosing appropriate variables, a majority of students were reluctant and preferred to guess the answer to the conceptual question based upon their gut feeling.
description: 4 page, PACS: 01.40Fk,01.40.gb,01.40G-,1.30.Rr. Proceedings of the Physics Education Research Conference
Numerical study of renormalization group flows of nuclear effective field theory without pions on a lattice
Creators: name: Harada, Koji
name: Sasabe, Satoru
name: Yahiro, Masanobu
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We formulate the next-to-leading order nuclear effective field theory without pions in the two-nucleon sector on a spatial lattice, and investigate nonperturbative renormalization group flows in the strong coupling region by diagonalizing the Hamiltonian numerically. The cutoff (proportional to the inverse of the lattice constant) dependence of the coupling constants is obtained by changing the lattice constant with the binding energy and the asymptotic normalization constant for the groundstate being fixed. We argue that the critical line can be obtained by looking at the finite-size dependence of the groundstate energy. We determine the relevant operator and locate the nontrivial fixed point, as well as the physical flow line corresponding to the deuteron in the two-dimensional plane of dimensionless coupling constants. It turns out that the location of the nontrivial fixed point is very close to the one obtained by the corresponding analytic calculation, but the relevant operator is quite different.
description: 14 pages, 13 figures
Transforming sanitation practices in developing Indonesian cities with social entrepreneurship
Creators: name: ERIKA MIYURI DUNCAN-HORNER
Publisher: name: Monash University
Year: 2020
Subjects: subject: 160499 Human Geography not elsewhere classified
subject: FOS: Social and economic geography

description: Social entrepreneurship is an emerging phenomenon recognised for tackling complex social and environmental problems with focus on improving human wellbeing, social justice and sustainability. This thesis examines this emerging social phenomenon within the case context of transforming urban sanitation practices in Indonesia through eight case studies. The study engaged eight social entrepreneurs and 40 research participants in interviews to understand what, why and how social entrepreneurs create transformative change and develops an explanatory framework that outlines the phenomenon, roles, strategies and motivations of SE.
Time-evolution of quantum systems via a complex nonlinear Riccati equation II. Dissipative systems
Creators: name: Cruz, Hans
name: Schuch, Dieter
name: Castanos, Octavio
name: Rosas-Ortiz, Oscar
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In our former contribution [Ann. Phys. 360 (2015) 44], we have shown the sensitivity to the choice of initial conditions in the evolution of Gaussian wave packets via the nonlinear Riccati equation. The formalism developed in the previous work is extended to effective approaches for the description of dissipative quantum systems. By means of simple examples we show the effects of the environment on the quantum uncertainties, correlation function, quantum energy contribution and tunneling currents. We prove that the environmental parameter $γ$ is strongly related with the sensitivity to the choice of initial conditions.
description: 30 pages, 5 figures, 1 table
Statistical analysis of properties of dwarf novae outbursts
Creators: name: Otulakowska-Hypka, Magdalena
name: Olech, Arkadiusz
name: Patterson, Joseph
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a statistical study of all measurable photometric features of a large sample of dwarf novae during their outbursts and superoutbursts. We used all accessible photometric data for all our objects to make the study as complete and up-to-date as possible. Our aim was to check correlations between these photometric features in order to constrain theoretical models which try to explain the nature of dwarf novae outbursts. We managed to confirm a few of the known correlations, that is the Stolz and Schoembs Relation, the Bailey Relation for long outbursts above the period gap, the relations between the cycle and supercycle lengths, amplitudes of normal and superoutbursts, amplitude and duration of superoutbursts, outburst duration and orbital period, outburst duration and mass ratio for short and normal outbursts, as well as the relation between the rise and decline rates of superoutbursts. However, we question the existence of the Kukarkin-Parenago Relation but we found an analogous relation for superoutbursts. We also failed to find one presumed relation between outburst duration and mass ratio for superoutbursts. This study should help to direct theoretical work dedicated to dwarf novae.
description: accepted for publication in MNRAS
Evaluation of Commercial Large Area Solar Simulator: Features Exceeding the IEC Standard Class AAA
Creators: name: Droz, C.
name: Fakhfouri, V.
name: Pelet, Y.
name: Roux, J.
name: Peguiron, N.
name: Beljean, P.-R.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 3884-3888
description: The assessment of PV devices by the current-voltage curve measurement is a key issue at development
level, as well as at production level. The accuracy of this measurement directly impacts on the price at which a module
can be sold, and thus on the profit of the manufacturer. The latest generation of Pasan solar simulators demonstrates the
best spectral match and uniformity available today on the market, together with a high-quality temporal stability and a
limited light incidence angle. This paper is concerned with the work investigated by Pasan to be able to propose
affordable large area testing equipments to the industry with specifications at least two times better than IEC class AAA
requirements. On one hand, it describes the ways to get and control these key parameters in flash simulators, and, on the
other hand, it shows the results of the thorough investigation carried out on such advanced solar simulators to
demonstrate the actual performances of these testing equipments and their ensuing benefits. Additional features like
intensity reduction mask enabling performance measurement at low irradiance as well as a set of passband filters
enabling the spectral response determination at module level are also presented.
The Influence of Measurement Errors in Spectral Irradiance of Flash Solar Simulators on the Spectral Mismatch Factor of PV Modules
Creators: name: Domine, D.
name: Friesen, G.
name: Dittmann, S.
name: Chianese, D.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 3889-3895
description: The spectral match with the reference spectral irradiance AM1.5G of commercially available flash
solar simulators can be much better than the IEC class A requirement. The consequence is that typical values for
|MM – 1| are often smaller than 1%, where MM is the spectral mismatch correction factor calculated according to the
IEC 60904-7 international standard. If one wants to correct for this remaining spectral mismatch error, special care
must be taken in the assessment of the robustness of the computation of MM, because the measurement of the
experimental spectral irradiance (Emeas) when using a pulsed solar simulator is much more challenging than with a
steady-state simulator. In this paper we discuss typical pitfalls in measuring Emeas of flash solar simulators. Using a
simple linear error function, we quantify the sensitivity of MM to systematic errors in spectrum measurement. This
representation also helps in the choice of the best reference cell for a given PV technology and a given solar
simulator.
Gender, new science, and old stories: Persistent discourses of brain sex in news media
Creators: name: Abrahams, Natasha
Publisher: name: Monash University
Year: 2020
Subjects: subject: Sociology
subject: FOS: Sociology
subject: Gender studies

description: This thesis investigates popular news media reporting of scientific findings on behavioural sex differences. Four key themes have emerged from this investigation: the legitimisation of popular knowledge as science; the persistent belief in a scientific basis for gender stereotypes over time; the ubiquity of metaphors to explain and simplify science in mass media, and the uncritical reporting of scientific claims relating to gender.
Single Crystalline GaAs on Lightweight Flexible Metal Substrates
Creators: name: Freundlich, A.
name: Selvamanickam, V.
name: Rajapaksha, C.
name: Alemu, A.
name: Mehrotra, A.
name: Wu, M.C.
name: Sambandam, S.
name: Xiong, X.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
Solar Cells, Modules and PV Systems for Space Applications

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 862-864
description: Development of high quality III-V epitaxial layers on inexpensive flexible substrates is a desirable
feature to many civilian and military applications. In particular it may be a paradigm shifting enabler toward
significantly reducing the cost and increasing the specific efficiency of space solar cells, as it offers the possibility of
combining the unsurpassed performance of GaAs based multi-junction technologies (~33% AM0) with a
conventional roll to roll processing standard of thin film industry as afforded by lightweight polycrystalline metallic
foil technologies. However thus far, attempts toward the direct deposition of GaAs and related compounds on metal
foils have yielded to poorly performing polycrystalline films and devices. Here we report on the fabrication of single
crystalline GaAs-based epilayers and solar cells on thin (50 microns) flexible polycrystalline Ni-based metallic
substrates. A rapid (1m/hour) roll to roll ion beam assisted deposition was used to deposit oxide based adaptation
buffers on the metal substrates followed by a growth of highly textured thin Ge films and the subsequent growth of
GaAs epilayers by molecular beam epitaxy. RHEED , X-ray diffraction and transmission electron microscopy
analysis confirm the (001) orientation and the single crystalline nature of the GaAs films. The fabricated samples
exhibit strong photoluminescence response attesting the optoelectronic quality of the fabricated films Structural and
opto-electronic properties show the potential for the realization of efficient GaAs solar cells on flexible substrates.
PV Module Output Power Characterisation in Test Laboratories and in the PV Industry - Results of the European PERFORMANCE Project
Creators: name: Herrmann, W.
name: Zamini, S.
name: Fabero, F.
name: Betts, T.
name: Van Der Borg, N.
name: Kiefer, K.
name: Friesen, G.
name: Müllejans, H.
name: Mohring, H.-D.
name: Vazquez, M.A.
name: Fraile Montoro, D.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 3879-3883
description: The EC-funded Integrated Project PERFORMANCE1 completed in December 2009 included a sub-project
on the Traceable Performance Measurements of PV Devices devoted to improving the comparability of PV module
power measurements between European test laboratories. The aim of the research work was to fill existing gaps of
knowledge for defining specific measurement procedures for various PV technologies, to translate research results into
best practice guidelines for PV industry and to provide input for standardisation working groups. To this end, various
round-robin tests were conducted among test laboratories covering the range of commercially available crystalline
silicon and thin-film PV modules. This paper presents the final results of our research work. It focuses on the progress
achieved for PV module output power characterisation, but also sketches measurement problems remaining to be solved.
Inline Single Side Polishing and Junction Isolation for Rear Side Passivated Solar Cells
Creators: name: Queisser, S.
name: De Keersmaecker, K.
name: Borgers, T.
name: Wefringhaus, E.
name: Nagel, D.
name: Sander, B.-U.
name: Loehmann, M.
name: Weber, M.
name: Delahaye, F.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1792-1794
description: Catchwords like cost-efficiency, easy handling and high throughput leed inevitable to the application of
wet chemistry in the production process of crystalline silicon wafers and solar cells. This paper will point out a new
Single Side Polishing process which will improve following passivation steps that need a really smooth single side
surface- to guarantee the integrity of the dielectric layer and to allow sufficient passivation.
Its great benefit is that no masking is needed – i.e. two process steps can be saved – masking and demasking.
The Engagement of Australians of Christian Background with Buddhism in Australia: An Exploratory Study of Religious Conversion
Creators: name: Nguyen, Thien
Publisher: name: Monash University
Year: 2020
Subjects: Religious Studies

description: Buddhism is one of the fastest growing religions in Australia. Significant part of this growth is due to converts from other religions. This thesis is an empirical based study of the process of conversion to Buddhism by Australians of Christian background (Catholic and Protestant). It discusses and presents the findings regarding the main reasons and causes leading to these conversions, such as dissatisfaction with certain aspects of Christian teachings and practice, the attraction of Buddhist teachings and practice, the complexities involved in the process of conversion and converts' prospects and challenges.
The Optimal Choice of the Doping Levels in an Inline Selective Emitter Design for Screen Printed Multicrystalline Silicon Solar Cells
Creators: name: Lauermann, T.
name: Book, F.
name: Dastgheib-Shirazi, A.
name: Hahn, G.
name: Haverkamp, H.
name: Bleidiessel, R.
name: Fleuster, M.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1795-1797
description: A selective emitter from a single diffusion process has been applied to screen printed multicrystalline
silicon solar cells. The influence of different dopant concentrations in the highly doped regions intended for
metallisation and alignment tolerances has been investigated. It was found that the gain reached by increasing the
dopant concentration and thereby lowering the specific contact resistance of the emitter electrode can be outweighed
by the loss in the short circuit current density (JSC) caused by an increased recombination at the front surface and in
the emitter. Therefore the process parameters have to be chosen carefully. The open circuit voltage (VOC) was found
to be nearly independent of the initial doping level.
Rethinking Tools for Training Teaching Assistants
Creators: name: Singh, Chandralekha
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: The ability to categorize problems is a measure of expertise in a domain. In order to help students learn effectively, instructors and teaching assistants (TAs) should have pedagogical content knowledge. They must be aware of the prior knowledge of students they are teaching, consider the difficulty of the problems from students' perspective and design instruction that builds on what students already know. Here, we discuss the response of graduate students enrolled in a TA training course to categorization tasks in which they were asked to group problems based upon similarity of solution first from their own perspective, and later from the perspective of introductory physics students. Many graduate students performed an expert-like categorization of introductory physics problems. However, when asked to categorize the same problems from the perspective of introductory students, many graduate students expressed dismay, claiming that the task was impossible, pointless and had no relevance to their TA duties. We will discuss how categorization can be a useful tool for scaffolding and improving pedagogical content knowledge of teaching assistants and instructors.
description: 4 pages, PACS: 01.40Fk,01.40.gb,01.40G-,1.30.Rr. Proceedings of the Physics Ed. Res. Conference
Retrieving the Covariance Matrix of an Unknown Two-Mode Gaussian State by Means of a Reference Twin Beam
Creators: name: Arkhipov, Ievgen I.
name: Peřina, Jan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A method for revealing the covariance matrix of an unknown two-mode Gaussian state is given based on the interference with a reference twin beam whose covariance matrix is known. In the method, first- and second-order cross-correlation intensity moments are determined varying the overall phase of the reference twin beam.
description: 9 pages, 1 figure
Environmental Sustainability of Concentrator PV Systems: Preliminary LCA Results of the Apollon Project
Creators: name: De Wild-Scholten, M.
name: Sturm, M.
name: Butturi, M.A.
name: Noack, M.
name: Heasman, K.
name: Timò, G.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV System Engineering and Standards, Socio-economic Aspects, and Sustainability

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 3908-3911
description: Energy payback time and carbon footprint have been calculated for 2 commercially available and 3 new CPV
systems by life cycle assessment. Calculations have been carried out for the location of Catania, Sicily (Italy). The energy
payback time varies from between 0.8 and 1.9 years. The carbon footprint varies from between 18 and 45 grams of CO2-
eq/kWh produced. The CPV systems are at varying stages of development, with different sizes and scale of production.
Further development, increased size and scale of production are expected to bring a further decrease in the impacts. The
largest contribution to the payback time and carbon footprint is from the tracking and module materials. Achieving high
efficiencies and increasing the lifetime of the components is important to increase the kWh produced by the CPV system.
New Texturing Technique Suitable for the Mass Production of Multicrystalline Si Solar Cells
Creators: name: Nishimoto, Y.
name: Matsumura, M.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1807-1810
description: We proposed a new texturing method based on a wet etching with metallic catalysts several years ago.
Here we present our recent results of it. We successfully simplify the texturing process by the new mesoporous Si
formation and by the acidic treatment. The conversion efficiency is 0.55% (absolute) higher than that of alkaline
textured solar cell. It takes a few minutes for texturing and the amount of etched Si is about 1um per side. It is
suitable for mass production of multicrystalline Si solar cells, especially for using thin wafers. Furthermore, the NOx
generation is smaller than that of the usual acidic texturing and there is no need for expensive equipments. This
technique also seems to be useful for several kinds of wafers that have no damaged layers, like RGS, SR and EFG,
because it makes texture itself on their surfaces.
Inequalities for exponential sums
Creators: name: Erdelyi, Tamas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 11C08, 41A17

description: Inequalities for exponential sums are studied. Our results improve an old result of G. Halasz and a recent result of G. Kos. We prove several other essentially sharp related results in this paper.
GEN2 Rondine® PV Concentrators
Creators: name: Antonini, A.
name: Butturi, M.A.
name: Di Benedetto, P.
name: Milan, E.
name: Uderzo, D.
name: Zurru, P.
name: Sartore, D.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
Terrestrial Concentrator Systems

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 990-993
description: Rondine® photovoltaic concentrators have demonstrated good in-field performances, showing
promising margins of improvement. A second generation of this kind of low (20x) concentrating modules have been
developed to achieve a product of high competiveness in the solar energy market. This new module has been
designed in order to match all the requirements of performances, safety, reliability and cost necessary for a successful
commercialization. Starting from the limits and experimental evidences of the Gen1 Rondine® modules, this second
generation has been developed with the aim of an automatic production with a competitive price even with small
initial investments and low volume of production.
Categorization of Quantum Mechanics Problems by Professors and Students
Creators: name: Lin, Shih-Yin
name: Singh, Chandralekha
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: We discuss the categorization of 20 quantum mechanics problems by physics professors and undergraduate students from two honors-level quantum mechanics courses. Professors and students were asked to categorize the problems based upon similarity of solution. We also had individual discussions with professors who categorized the problems. Faculty members' categorizations were overall rated higher than those of students by three faculty members who evaluated all of the categorizations. The categories created by faculty members were more diverse compared to the categories they created for a set of introductory mechanics problems. Some faculty members noted that the categorization of introductory physics problems often involves identifying fundamental principles relevant for the problem, whereas in upper-level undergraduate quantum mechanics problems, it mainly involves identifying concepts and procedures required to solve the problem. Moreover, physics faculty members who evaluated others' categorizations expressed that the task was very challenging and they sometimes found another person's categorization to be better than their own. They also rated some concrete categories such as "hydrogen atom" or "simple harmonic oscillator" higher than other concrete categories such as "infinite square well" or "free particle".
description: 12 pages, PACS: 01.40Fk,01.40.gb,01.40G-,1.30.Rr, keywords: physics education research, quantum mechanics pedagogy, teaching, learning
The Soft Side of Multicultural Politics: The Cross-Cultural Ministry and Mission of the Melbourne Anglican Church, 1975-1995
Creators: name: Tanner, Haydee Nicole
Publisher: name: Monash University
Year: 2020
Subjects: History

description: From the mid-1970s to the mid-1990s multiculturalism was adopted as an official policy by successive Australian governments. This placed the Melbourne Anglican Diocese under pressure to embrace changes that seemed of little direct benefit, but brought into question its identity and mission. This thesis examines the tensions between the Melbourne Anglicans who wanted to make the church more multicultural and those who opposed change, preferring to maintain tradition. It demonstrates how the Anglican ethos, internal tensions in the Diocese, other social changes, and the contested nature of multiculturalism, prevented a unified and confident Anglican approach to cultural diversity in Melbourne.
Mathematical Modeling for Cost Optimization of PV Recycling Infrastructure: Short-term Planning
Creators: name: Choi, J.-K.
name: Fthenakis, V.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV System Engineering and Standards, Socio-economic Aspects, and Sustainability

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 3904-3907
description: Consideration of the usage of valuable resources and the generation of emissions in the life cycle of
photovoltaic (PV) technologies dictates proactive planning for a sound PV recycling infrastructure to ensure its
sustainability. In addition to enhancing the life-cycle environmental quality of PV, economic feasibility and a
sufficient level of value-added opportunity must be ensured, to stimulate a recycling industry. We have developed a
mathematical model to analyze the profitability of recycling technologies and to guide tactical decisions for PV takeback
center.
Perpetual American options in diffusion-type models with running maxima and drawdowns
Creators: name: Gapeev, Pavel V.
name: Rodosthenous, Neofytos
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G40, 34K10, 91G20 (Primary) 60J60, 34L30, 91B25 (Secondary)

description: We study perpetual American option pricing problems in an extension of the Black-Merton-Scholes model in which the dividend and volatility rates of the underlying risky asset depend on the running values of its maximum and maximum drawdown. The optimal exercise times are shown to be the first times at which the underlying asset hits certain boundaries depending on the running values of the associated maximum and maximum drawdown processes. We obtain closed-form solutions to the equivalent free-boundary problems for the value functions with smooth fit at the optimal stopping boundaries and normal reflection at the edges of the state space of the resulting three-dimensional Markov process. The optimal exercise boundaries for the perpetual American options on the maximum of the market depth with fixed and floating strikes are determined as the minimal solutions of certain first-order nonlinear ordinary differential equations.
description: arXiv admin note: substantial text overlap with arXiv:1405.4438
Understanding Skilled Migration: Ukrainians in Germany and Australia
Creators: name: OLHA SHMIHELSKA
Publisher: name: Monash University
Year: 2020
Subjects: subject: Law
subject: FOS: Law
subject: 140211 Labour Economics
subject: FOS: Economics and business
subject: Sociology
subject: FOS: Sociology
subject: 160303 Migration

description: This thesis demonstrates that relatively privileged, skilled Ukrainian migrants faced different degrees of precariousness in Germany and Australia in the period beginning in 2013. Their disadvantageous circumstances were connected to their visa statuses, which determined their length of stay, limited their access to a social safety net, and imposed gender dynamics often unfavourable to women. Social capital created within the networks of the Ukrainian diaspora communities and based on a shared sense of a Ukrainian national identity accepting of linguistic difference were partly able to assist newcomers in improving these situations.
Increased Open Circuit Voltage in Cu(In, Ga)S2 Based Solar Cells Prepared by Rapid Thermal Processing of Metal Precursors
Creators: name: Merdes, S.
name: Kaigawa, R.
name: Klaer, J.
name: Klenk, R.
name: Mainz, R.
name: Meeder, A.
name: Papathanasiou, N.
name: Abou-Ras, D.
name: Schmidt, S.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
CIS, CdTe and Other (II-VI) Ternary Thin Film Cells

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2588-2591
description: In this work, we present the progress made in Cu(In,Ga)S2 based solar cells prepared from sputtered metals
subsequently sulfurized using rapid thermal processing in sulfur vapor. In a previous paper, we showed that Cu(In,Ga)S2
solar cells with efficiencies of 12.2% could be achieved. The current collection of the obtained cells as confirmed by the
external quantum efficiency was excellent. However the used process resulted in absorbers with very expressed
CuInS2/CuGaS2 (top/bottom) segregation [1]. The electronic properties, including fill factor and open circuit voltage, were
thus inferior to those obtained in our earlier work with multi-source evaporated absorbers, where we could show that the best
performance is obtained when there is a gallium content of about five percent in the upper part of the absorber layer [2]. In
the current contribution, we show that the required degree of interdiffusion can be achieved by choosing appropriate
sulfurization temperature profiles. Incomplete sulfurization is avoided and the process stability and reproducibility of cell
properties is greatly enhanced. The corresponding material and cell properties are similar to multi-source evaporation and a
new record cell is obtained. The process leads to an effective band gap between those of the gallium-free reference and the
most efficient multi-source evaporated cells. It was possible to increase the effective band gap resulting in open circuit
voltages up to 842 mV. The structure and electronic properties of absorbers grown by different approaches and cells
prepared from them has been analyzed. We will discuss the correlation between structure, gallium depth-profile and cell
performance. Voltage and quantum efficiency in relation to the effective band gap are compared to those of the multi-source
evaporated cells. Process control of the buffer layer preparation suggests different absorber surface properties and the need to
re-adjust heterojunction preparation in order to fully exploit the efficiency potential of our sequentially prepared Cu(In,Ga)S2
absorber layers.
Research on Blockchain Technology and its associated Cybersecurity Issues
Creators: RAHUL BAKSHI
Publisher: name: University of Alberta Library
Year: 2023

The Blockchain is the decentralized and distributed chain of blocks that contains information, which was designed to timestamp the digital data so that it cannot be tampered. Since its inception in 2008 by Satoshi Nakamoto, Blockchain technology has drawn the attention of several financial and governmental sectors. Blockchain technology has the potential to be extremely important for the future of our financial system and other important industries. It has practically endless applications, and its ideas can be applied to various sectors where security, scalability, and efficiency are essential. Due to its decentralized nature, encryption concepts such as public-key cryptography, digital signatures, hashing and various algorithms Blockchain made it possible to cut down the involvement of the trusted third party and maintain the security of the shared databases.

The objective of the report is to conduct comprehensive research on Blockchain Technology. This research on the Blockchain is part of a sequence that outlines the history that led to the presentday system, mechanisms, and key features of Blockchain technology. We will study the layered architecture of the technology and different types of Blockchains and compare some consensus protocols used in the Blockchain. Furthermore, the security mechanism and the challenges of the technology are discussed. Finally, we implement the Distributed Denial of Service attack on blockchain technology and propose the possible mitigation steps for the same.
Ecological Data Optimisation in the PV Industry
Creators: name: Müller, A.
name: Schlenker, S.
name: Wambach, K.
name: Fath, P.
name: Weber, F.
name: Klaus, T.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
PV System Engineering and Standards, Socio-economic Aspects, and Sustainability

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 3912-3916
description: In this work, we analyse data from the manufacturing sites of the SolarWorld Group from 2009
(Freiberg, Germany: wafers, cells, modules; Hillsboro, USA: wafers and cells; Camarillo, USA: modules) as well as
data gathered worldwide by Centrotherm in 2010 to derive up-to-date figures for cumulative energy demand (CED).
Thanks to the progressing scale up of PV mass production significant energy savings were recorded. Databases such
as ecoinvent V2.1 of July 2009 require frequent updates to track the excellent progress achieved each year in the PV
industry. New processes have to be included to cover the various global localisations.
Using true-life examples, the influence of key parameters on the life cycle inventory was shown, and the positive
effect of optimised products and automated machine operations on the environmental impact of PV systems were
proven.
Bifacial Solar Cells with Selective B-BSF by Laser Doping
Creators: name: Duran, C.
name: Eisele, S.J.
name: Buck, T.
name: Kopecek, R.
name: Köhler, J.R.
name: Werner, J.H.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1775-1778
description: We report on bifacial solar cells with selectively laser doped boron back surface fields reaching an
efficiency  = 15.9% on solar grade Cz-Silicon. Before laser doping the rear sides of the solar cells are borondiffused
in an open tube furnace using a purpose optimized diffusion process. Our patented, scanned laser doping
process locally increases the doping under the rear metallization, thus allowing for a shallow doped rear side between
the contacts. The laser doping process offers an elegant and reliable approach for the local formation of selectively
doped rear surfaces on silicon solar cells. This one additional processing step together with the optimized diffusion
process increases the cell performance by D = 1.0% absolute compared to reference bifacial solar cells processed
with our standard furnace diffusion process.