cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Swiss Mobile Flasher Bus: Progress and New Measurement Features
Creators: name: Achtnich, T.
name: Baumgartner, F.P.
name: Allet, N.
name: Pezzotti, M.
name: Haller, J.
name: Aeschbach, B.
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; 4202-4208
description: The Swiss Mobile Flasher Bus (SMFB) was developed in July 2009 and is equipped with a standard
high-quality Pasan flasher. In the past year several measurement orders were carried out and a very high throughput
of up to 200 PV modules per day could be reached at customer site. The measurements of the SMFB are calibrated
with a set of four 230W standard polycrystalline silicon modules, each tested at ISE, Freiburg by a precision
performance measurement with an uncertainty level of 2% (95% confidence level). A calculation of the SMFB
measurement uncertainty budget is presented based on the uncertainty of this four reference modules. Additional test
measurements with the SMFB were performed, to estimate the sensitivity of parameters, responsible to further
increase the overall uncertainty budget. For instance the non-uniformity was measured over the whole area of 2m by
2m, the module temperature was varied in the range of larger than 5°C around STC and module inclination was
systematically changed to account for unknown variations due to not identically mounting situations of the module
position and the reference cell. The resulted expanded combined uncertainty is ±3% at a 95% confidence level for
standard crystalline Silicon modules. This uncertainty value is about 1% larger than values of the best stationary test
labs but enables still very accurate measurements at ambient temperature conditions with the advantage to make more
measurements directly on customer’s site.
Particular regard was set on the measurement of module efficiency from STC down to low-irradiance of 70 W/m2.
Thin film technologies like CdTe modules come up with an efficiency characteristic with about 4% relative higher
values in the range of 400 W/m2 compared to standard crystalline Silicon modules.
Since summer 2010 the SMFB offers the measurement of the spectral response characteristic on module scale. This is
realised by placing optical band pass filters of 50nm spectral width, in front of the flasher light source in steps of also
50nm from 400nm to 1100nm. The spectral response measurement will allow even more accurate measurements of
the power performance because the spectral mismatch factor can be quantified und thus this spectral uncertainty
contribution will be minimised. Successful spectral resonse measurements could be performed using single junction
devices like standard cr-Si modules CdTe and CIS modules.
Topological states in chiral electronic chains
Creators: name: Sacramento, P. D.
name: Madeira, M. F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider the influence of topological phases, or their vicinity, on the spin density and spin polarization through a chiral chain. We show the quantization of the Berry phase in a one-dimensional polarization helix structure, under the presence of an external magnetic field, and show its influence on the spin density. The polar angle of the momentum space spin density becomes quantized in the regime that the Berry phase is quantized, as a result of the combined effect of the induced spin-orbit coupling and the external transverse magnetic field, while the edge states do not show the polar angle quantization, in contrast with the bulk states. Under appropriate conditions, the model can be generalized to have similarities with a chain with nonhomogeneous Rashba spin- orbit couplings, with zero- or low-energy edge states. Due to the breaking of time-reversal symmetry, we recover the effect of chiral-induced spin polarization and spin transport across the chiral chain, when coupling to external leads. Some consequences of the quantized spin polarization and low-energy states on the spin transport are discussed.
description: 16 figures
Characterisation of Flexible Mono-Crystalline Silicon PV Modules
Creators: name: Thomsen, E.A.
name: Ratcliff, T.
name: Muric-Nesic, J.
name: Xia, L.
name: Brauers, M.
name: Fong, K.C.
name: Davies, E.
name: Mankelow, R.
name: Skryabin, I.
name: Everett, V.
name: Blakers, A.
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; 4223-4226
description: This paper presents measured flexibility characteristics of photovoltaic modules based on monocrystalline
silicon solar cells. The modules are designed to be 13% efficient, have a power to weight ratio of
150W/kg, and have an area of 0.1 m2. A number of flexible module tests have been developed for the
components, sub-structures, and full modules. These tests could potentially form the basis of a standard for
flexible photovoltaic module testing when incorporated with tests from IEC 61215 for crystalline silicon
terrestrial photovoltaic modules. Flexibility tests include measurement of the breaking radius of cells, and
multiple flexure to a set radius followed by characterisation tests such as electrical conductivity, peel tests,
efficiency, and series resistance.
ALMA-resolved salt emission traces the chemical footprint and inner wind morphology of VY CMa
Creators: name: Decin, L.
name: Richards, A. M. S.
name: Millar, T. J.
name: Baudry, A.
name: De Beck, E.
name: Homan, W.
name: Smith, N.
name: Van de Sande, M.
name: Walsh, C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: (abreviated) We aim to study the inner-wind structure (R<250 Rstar) of the well-known red supergiant VY CMa. We analyse high spatial resolution (~0".24x0".13) ALMA Science Verification (SV) data in band 7 in which four thermal emission lines of gaseous sodium chloride (NaCl) are present at high signal-to-noise ratio. For the first time, the NaCl emission in the inner wind region of VY CMa is spatially resolved. The ALMA observations reveal the contribution of up to four different spatial regions. The NaCl emission pattern is different compared to the dust continuum and TiO2 emission already analysed from the ALMA SV data. The emission can be reconciled with an axisymmetric geometry, where the lower density polar/rotation axis has a position angle of ~50 degrees measured from north to east. However, this picture can not capture the full morphological diversity, and discrete mass ejection events need to be invoked to explain localized higher-density regions. The velocity traced by the gaseous NaCl line profiles is significantly lower than the average wind terminal velocity, and much slower than some of the fastest mass ejections, signalling a wide range of characteristic speeds for the mass loss. Gaseous NaCl is detected far beyond the main dust condensation region. Realising the refractory nature of this metal halide, this hints at a chemical process preventing all NaCl from condensing onto dust grains. We show that in the case of the ratio of the surface binding temperature to the grain temperature being ~50, only some 10% of NaCl remains in gaseous form, while for lower values of this ratio thermal desorption efficiently evaporates NaCl. Photodesorption by stellar photons seems not to be a viable explanation for the detection of gaseous NaCl at 220 Rstar from the central star, and instead, we propose shock-induced sputtering driven by localized mass ejection events as alternative.
description: 17 pages, Astronomy & Astrophysics
Supersymmetric Renyi Entropy and Weyl Anomalies in Six-Dimensional (2,0) Theories
Creators: name: Zhou, Yang
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a closed formula of the universal part of supersymmetric Rényi entropy $S_q$ for $(2,0)$ superconformal theories in six-dimensions. We show that $S_q$ across a spherical entangling surface is a cubic polynomial of $γ:=1/q$, with all coefficients expressed in terms of the newly discovered Weyl anomalies $a$ and $c$. This is equivalent to a similar statement of the supersymmetric free energy on conic (or squashed) six-sphere. We first obtain the closed formula by promoting the free tensor multiplet result and then provide an independent derivation by assuming that $S_q$ can be written as a linear combination of 't Hooft anomaly coefficients. We discuss a possible lower bound ${a\over c}\geq {3\over 7}$ implied by our result.
description: 30 pages+1 table
Modelling of Intergranular Stresses During Elastic Deformation of Multi-Crystalline Silicon
Creators: name: Dumoulin, S.
name: Gouttebroze, S.
name: M'Hamdi, M.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Cells and Materials, Processing Technology of

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1924-1928
description: The present work concerns the modelling of the elastic behaviour of silicon multi-crystalline aggregates using either an isotropic model or a more advanced description where the grains are explicitly resolved and their anisotropy accounted for. The behaviour of single-crystals with different orientations in tension, and multi-crystals under tensile or four-point bending conditions using both approaches is investigated and compared.
Improving Personality Consistency in Conversation by Persona Extending
Creators: name: Liu, Yifan
name: Wei, Wei
name: Liu, Jiayi
name: Mao, Xianling
name: Fang, Rui
name: Chen, Dangyang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Endowing chatbots with a consistent personality plays a vital role for agents to deliver human-like interactions. However, existing personalized approaches commonly generate responses in light of static predefined personas depicted with textual description, which may severely restrict the interactivity of human and the chatbot, especially when the agent needs to answer the query excluded in the predefined personas, which is so-called out-of-predefined persona problem (named OOP for simplicity). To alleviate the problem, in this paper we propose a novel retrieval-to-prediction paradigm consisting of two subcomponents, namely, (1) Persona Retrieval Model (PRM), it retrieves a persona from a global collection based on a Natural Language Inference (NLI) model, the inferred persona is consistent with the predefined personas; and (2) Posterior-scored Transformer (PS-Transformer), it adopts a persona posterior distribution that further considers the actual personas used in the ground response, maximally mitigating the gap between training and inferring. Furthermore, we present a dataset called IT-ConvAI2 that first highlights the OOP problem in personalized dialogue. Extensive experiments on both IT-ConvAI2 and ConvAI2 demonstrate that our proposed model yields considerable improvements in both automatic metrics and human evaluations.
description: Accepted by CIKM 2022
Inclusion of Accurate Solar Spectral Irradiance Modelling in a PV Performance Prediction Tool
Creators: name: Weihs, P.
name: Wagner, J.E.
name: Laube, W.
name: Rennhofer, M.
name: Zamini, S.
name: Baumgartner, 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; 4215-4218
description: Within the scope of the project PV-SPEC the influence of solar spectrum and climate on the performance
of PV modules is investigated. For this purpose experimental investigations are performed at two locations:
Observatory Kanzelhöhe (Carinthia, 1600 m above sea level) and in Vienna (Techbase, 170 m above sea level).
Routine measurements of the performance (short circuit current) of three different types of PV modules are performed.
The modules of each type are mounted with an inclination of 35° in three directions: southward, westward and
eastward. We compare the solar spectrum and the ratio of the PV Performance to the total incident global solar
radiation incident on the PV module for one clear sky and one overcast day at the two locations. The larger the daily
fluctuations of the spectral distribution are, the larger are also the changes in the ratio of PV performance to global
solar radiation.
Mapping Out Narrative Structures and Dynamics Using Networks and Textual Information
Creators: name: Min, Semi
name: Park, Juyong
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computation and Language (cs.CL)
subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Human communication is often executed in the form of a narrative, an account of connected events composed of characters, actions, and settings. A coherent narrative structure is therefore a requisite for a well-formulated narrative -- be it fictional or nonfictional -- for informative and effective communication, opening up the possibility of a deeper understanding of a narrative by studying its structural properties. In this paper we present a network-based framework for modeling and analyzing the structure of a narrative, which is further expanded by incorporating methods from computational linguistics to utilize the narrative text. Modeling a narrative as a dynamically unfolding system, we characterize its progression via the growth patterns of the character network, and use sentiment analysis and topic modeling to represent the actual content of the narrative in the form of interaction maps between characters with associated sentiment values and keywords. This is a network framework advanced beyond the simple occurrence-based one most often used until now, allowing one to utilize the unique characteristics of a given narrative to a high degree. Given the ubiquity and importance of narratives, such advanced network-based representation and analysis framework may lead to a more systematic modeling and understanding of narratives for social interactions, expression of human sentiments, and communication.
description: 17 pages, 10 figures
Debonding of a soft adhesive fibril in contact with an elastomeric pillar
Creators: name: Duigou-Majumdar, Aymeric
name: Cortet, Pierre-Philippe
name: Poulard, Christophe
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The debonding criterion of fibrils of soft adhesive materials is a key element regarding the quantitative modelisation of pressure sensitive adhesive tapes peeling energy. We present in this article an experimental study of the detachment of a commercial acrylic adhesive tape from the top surface of a single micrometric pillar of PDMS elastomer. During an experiment, the pillar and the adhesive, after being put in contact, are separated at a constant displacement rate, resulting in the formation, the elongation and the final detachment of a fibril of adhesive material. A systematic study allows us to uncover power laws for the maximum force and the critical elongation of the fibril at debonding as a function of the diameter of the cylindrical pillar which controls the diameter of the fibril. The scaling law evidenced for the critical elongation appears as a first step toward the understanding of the debonding criterion of fibrils of soft adhesive materials. In addition, viscoelastic digitation at the triple debonding line is observed during detachment for large pillar diameters. The wavelength and penetration length of the fingers that we report appear to be consistent with existing models based on pure elastic mechanical response.
Novel Selective Emitter Solar Cell Based on n-Type mc-Si
Creators: name: Tucci, M.
name: Serenelli, L.
name: Del Bono, A.
name: Izzi, M.
name: Pirozzi, L.
name: Martufi, P.
name: Sanseverino, A.
name: Bittoni, L.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Cells and Materials, Processing Technology of

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1847-1850
description: To achieve higher efficiency in silicon based solar cell selective emitter formation can be helpful to enhance the short wavelength response. In turn the industrial application of this technology is still limited by the realignment problems of the front metal contact with respect to the high doped region of the emitter layer. In this preliminary work we propose a self alignment thought based on an innovative procedure able to fabricate high-low doping profile of the emitter region. The idea is based on a plasma treatment able to trim down the thickness of an homogeneous heavy doped emitter reducing its doping concentration and its sheet resistance. In particular the front metal grid screen printed on the heavy doped emitter has been used as a mask during the dry plasma procedure. Only
the emitter regions off grid have been etched away to achieve the low doping profile useful to obtain an effective selective emitter.
Multimodal Across Domains Gaze Target Detection
Creators: name: Tonini, Francesco
name: Beyan, Cigdem
name: Ricci, Elisa
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: This paper addresses the gaze target detection problem in single images captured from the third-person perspective. We present a multimodal deep architecture to infer where a person in a scene is looking. This spatial model is trained on the head images of the person-of- interest, scene and depth maps representing rich context information. Our model, unlike several prior art, do not require supervision of the gaze angles, do not rely on head orientation information and/or location of the eyes of person-of-interest. Extensive experiments demonstrate the stronger performance of our method on multiple benchmark datasets. We also investigated several variations of our method by altering joint-learning of multimodal data. Some variations outperform a few prior art as well. First time in this paper, we inspect domain adaption for gaze target detection, and we empower our multimodal network to effectively handle the domain gap across datasets. The code of the proposed method is available at https://github.com/francescotonini/multimodal-across-domains-gaze-target-detection.
description: Accepted to 24th ACM International Conference on Multimodal Interaction (ICMI 2022)
Surface Passivation of Multi-Si for Heterojunction Solar Cells
Creators: name: Asha, A.S.
name: Canino, M.
name: Summonte, C.
name: Binetti, S.
name: Acciarri, M.
name: Libal, J.
name: Cavalcoli, D.
name: Cavallini, A.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Cells and Materials, Processing Technology of

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1938-1941
description: We studied the passivation effect of plasma deposited intrinsic and doped hydrogenated amorphous silicon layers on industrial grade, n-type, 1 Ωcm multicrystalline silicon, aimed at the fabrication of Heterojunction (HJ) solar cells based on such material. The investigated variables include the process temperature, hydrogen dilution of silane during the intrinsic layer deposition, and passivating layer thickness. The structure of the passivating layers was analysed by optical measurements. Surface photovoltage and quasi-steady state photoconductance were used to characterize untreated and treated wafers. Thin a-Si:H layers exhibited the best passivating performance.
Upgrading the Beam Telescopes at the DESY II Test Beam Facility
Creators: name: Augustin, H.
name: Diener, R.
name: Dittmeier, S.
name: Freeman, P. M.
name: Hammerich, J.
name: Herkert, A.
name: Huth, L.
name: Immig, D.
name: Krämer, U.
name: Meyners, N.
name: Perić, I.
name: Schäfer, O.
name: Schöning, A.
name: Simancas, A.
name: Stanitzki, M.
name: Stuart, D.
name: Weinläder, B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The DESY II Test Beam Facility is a key infrastructure for modern high energy physics detector development, providing particles with a small momentum spread in a range from 1 to 6 GeV to user groups e.g. from the LHC experiments and Belle II as well as generic detector R&D. Beam telescopes are provided in all three test beam areas as precise tracking reference without time stamping, with triggered readout and a readout time of > 115 $μ$s. If the highest available rates are used, multiple particles are traversing the telescopes within one readout frame, thus creating ambiguities that cannot be resolved without additional timing layers. Several upgrades are currently investigated and tested: Firstly, a fast monolithic pixel sensor, the TelePix, to provide precise track timing and triggering on a region of interest is proposed to overcome this limitation. The TelePix is a 180 nm HV-CMOS sensor that has been developed jointly by DESY, KIT and the University of Heidelberg and designed at KIT. In this publication, the performance evaluation is presented: The difference between two amplifier designs is evaluated. A high hit detection efficiency of above 99.9 % combined with a time resolution of below 4 ns at negligible pixel noise rates is determined. Finally, the digital hit output to provide region of interest triggering is evaluated and shows a short absolute delay with respect to a traditional trigger scintillator as well as an excellent time resolution. Secondly, a fast LGAD plane has been proposed to provide a time resolution of a few 10 ps, which is foreseen to drastically improve the timing performance of the telescope. Time resolutions of below 70 ps have been determined in collaboration with the University of California, Santa Barbara.
Real-Time Sonar Fusion for Layered Navigation Controller
Creators: name: Jansen, Wouter
name: Laurijssen, Dennis
name: Steckel, Jan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Navigation in varied and dynamic indoor environments remains a complex task for autonomous mobile platforms. Especially when conditions worsen, typical sensor modalities may fail to operate optimally and subsequently provide inapt input for safe navigation control. In this study, we present an approach for the navigation of a dynamic indoor environment with a mobile platform with a single or several sonar sensors using a layered control system. These sensors can operate in conditions such as rain, fog, dust, or dirt. The different control layers, such as collision avoidance and corridor following behavior, are activated based on acoustic flow queues in the fusion of the sonar images. The novelty of this work is allowing these sensors to be freely positioned on the mobile platform and providing the framework for designing the optimal navigational outcome based on a zoning system around the mobile platform. Presented in this paper is the acoustic flow model used, as well as the design of the layered controller. Next to validation in simulation, an implementation is presented and validated in a real office environment using a real mobile platform with one, two, or three sonar sensors in real time with 2D navigation. Multiple sensor layouts were validated in both the simulation and real experiments to demonstrate that the modular approach for the controller and sensor fusion works optimally. The results of this work show stable and safe navigation of indoor environments with dynamic objects.
Exploring Service Concentration, Service Coverage and Resourcing in Urban Bus Networks
Creators: name: NORA ESTGFAELLER
Publisher: name: Monash University
Year: 2020
Subjects: subject: 90507 Transport Engineering
subject: FOS: Civil engineering
subject: 140217 Transport Economics
subject: FOS: Economics and business
subject: 120506 Transport Planning
subject: FOS: Social and economic geography

description: Transport authorities have decisions to make about the deployment of public transport vehicle resources on urban bus networks. Spreading out services improves coverage but can dilute service frequency. Concentrating resources can improve frequency but also acts to increase walk access distance which raises concerns over equity. This thesis explores the trade-offs between service concentration, service coverage and resourcing in urban bus networks and their effect on ridership through applying theoretical network modelling and empirical analysis of Melbourne’s bus network. Results suggest investing in service frequency instead of area coverage can increase ridership, but there are limits to service concentration.
Particle and cell manipulation in microfluidics: patterning and trapping using ultrasound
Creators: name: RUHOLLAH HABIBI
Publisher: name: Monash University
Year: 2020
Subjects: subject: 90399 Biomedical Engineering not elsewhere classified
subject: FOS: Medical engineering
subject: Biological Engineering
subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: Trapping, patterning and separation of micro/nanoparticles and cells are essential in tissue engineering, single-cell studies and medical diagnosis. With the application of the physics of fluids at the micro-scale, microfluidics provides visual accessibility and high-resolution control for particle manipulation. Ultrasound can generate contactless and label-free forces to manipulate particles in microfluidics. This thesis develops efficient numerical modelling to study unexplored physical effects of resonance frequencies on inter-particle forces. Building on the findings from modelling, it presents the invention of a novel method for nanoparticle trapping by ultrasonic activation of a pack of microparticles with the potential of upscaling.
A Class of Three-Weight Linear Codes and Their Complete Weight Enumerators
Creators: name: Yang, Shudi
name: Yao, Zheng-An
name: Zhao, Chang-An
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences
subject: 94B15, 11T71

description: Recently, linear codes constructed from defining sets have been investigated extensively and they have many applications. In this paper, for an odd prime $p$, we propose a class of $p$-ary linear codes by choosing a proper defining set. Their weight enumerators and complete weight enumerators are presented explicitly. The results show that they are linear codes with three weights and suitable for the constructions of authentication codes and secret sharing schemes.
description: 18 pages
Automatic Calibration of a Six-Degrees-of-Freedom Pose Estimation System
Creators: name: Jansen, Wouter
name: Laurijssen, Dennis
name: Daems, Walter
name: Steckel, Jan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Systems for estimating the six-degrees-of-freedom human body pose have been improving for over two decades. Technologies such as motion capture cameras, advanced gaming peripherals and more recently both deep learning techniques and virtual reality systems have shown impressive results. However, most systems that provide high accuracy and high precision are expensive and not easy to operate. Recently, research has been carried out to estimate the human body pose using the HTC Vive virtual reality system. This system shows accurate results while keeping the cost under a 1000 USD. This system uses an optical approach. Two transmitter devices emit infrared pulses and laser planes are tracked by use of photo diodes on receiver hardware. A system using these transmitter devices combined with low-cost custom-made receiver hardware was developed previously but requires manual measurement of the position and orientation of the transmitter devices. These manual measurements can be time consuming, prone to error and not possible in particular setups. We propose an algorithm to automatically calibrate the poses of the transmitter devices in any chosen environment with custom receiver/calibration hardware. Results show that the calibration works in a variety of setups while being more accurate than what manual measurements would allow. Furthermore, the calibration movement and speed has no noticeable influence on the precision of the results.
Inducing an Incipient Terahertz Finite Plasmonic Crystal in Coupled Two Dimensional Plasmonic Cavities
Creators: name: Dyer, Gregory C.
name: Aizin, Gregory R.
name: Preu, Sascha
name: Vinh, N. Q.
name: Allen, S. James
name: Reno, John L.
name: Shaner, Eric A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We measured a change in the current transport of an antenna-coupled, multi-gate, GaAs/AlGaAs field-effect transistor when terahertz electromagnetic waves irradiated the transistor and attribute the change to bolometric heating of the electrons in the two-dimensional electron channel. The observed terahertz absorption spectrum indicates coherence between plasmons excited under adjacent biased device gates. The experimental results agree quantitatively with a theoretical model we developed that is based on a generalized plasmonic transmission line formalism and describes an evolution of the plasmonic spectrum with increasing electron density modulation from homogeneous to the crystal limit. These results demonstrate an electronically induced and dynamically tunable plasmonic band structure.
Extraction of the Surface Recombination Velocity and Diffusion Length from LBIC and EBIC Measurements at Grain Boundaries in mc Silicon
Creators: name: Zuschlag, A.
name: Micard, G.
name: Junge, J.
name: Kaes, M.
name: Seren, S.
name: Hahn, G.
name: Coletti, G.
name: Jia, G.
name: Seifert, W.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Cells and Materials, Processing Technology of

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1915-1918
description: The surface recombination velocity at grain boundaries as well as the intra-grain diffusion length can be extracted in principle from Light and Electron Beam Induced Current measurements (LBIC and EBIC). This paper focuses on the influence of the grain size and the impact of hydrogen passivation steps during the solar cell process on these parameters. A set of differently treated multicrystalline floatzone (mc FZ) solar cells with different grain sizes (0.2–1 mm) was characterized by LBIC and EBIC measurements. Efficiencies reached on the processed solar cells (up to 16.0%) are the highest reported so far for material with such small grains. Also, the positive effect of hydrogenation can clearly be seen and quantitatively compared by extraction of the surface recombination velocity and the intra-grain diffusion length using a direct fitting procedure. Compared to [1] the describing theoretical model is adapted and extended [2], which allows the modeling of neighboring grains with different diffusion length. The obtained results could be very helpful for evaluation and determination of the efficiency potential of small grained wafer materials.
In-Air Imaging Sonar Sensor Network with Real-Time Processing Using GPUs
Creators: name: Jansen, Wouter
name: Laurijssen, Dennis
name: Kerstens, Robin
name: Daems, Walter
name: Steckel, Jan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Networking and Internet Architecture (cs.NI)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: For autonomous navigation and robotic applications, sensing the environment correctly is crucial. Many sensing modalities for this purpose exist. In recent years, one such modality that is being used is in-air imaging sonar. It is ideal in complex environments with rough conditions such as dust or fog. However, like with most sensing modalities, to sense the full environment around the mobile platform, multiple such sensors are needed to capture the full 360-degree range. Currently the processing algorithms used to create this data are insufficient to do so for multiple sensors at a reasonably fast update rate. Furthermore, a flexible and robust framework is needed to easily implement multiple imaging sonar sensors into any setup and serve multiple application types for the data. In this paper we present a sensor network framework designed for this novel sensing modality. Furthermore, an implementation of the processing algorithm on a Graphics Processing Unit is proposed to potentially decrease the computing time to allow for real-time processing of one or more imaging sonar sensors at a sufficiently high update rate.
description: 2019 International Conference on P2P, Parallel, Grid, Cloud and Internet Computing
Dynamic Analysis of Heavy-Duty Trailers
Creators: name: YIN, YUNXIANG
Publisher: name: Monash University
Year: 2020
Subjects: Mechanical engineering not elsewhere classified

description: To ultimately generate simulated load spectrums for fatigue analysis, dynamic analysis of heavy-duty trailers were developed in this study. Trailer models were contructed according to real commercial trailer designs and simulated to run under different driving scenarios and road conditions in a multibody dynamic simulation software ADAMS/CAR. Linear regression based machine learning approaches were then applied to the simulations results in order to make accurate predictions and investigate relationship between factors.
Increase in Mechanical Strength of As-Cut Mono-Crystalline Silicon Wafers by Alkaline Etching Process
Creators: name: Orellana Pérez, T.
name: Mayer, K.
name: Schumann, M.
name: Granek, F.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1234-1239
description: The mechanical strength of silicon wafers is a very important parameter to assure the processing of the
wafers throughout the whole solar cell production chain without breaking. Micro-cracks at the edges and on the
surface of the wafers are well known to limit their mechanical strength. In the present work, the micro-cracks
removal capability of an industrial standard etching solution and its impact on the mechanical strength of monocrystalline
silicon wafers have been investigated. After 5 min etch, micro-cracks were removed or partially rounded
and therefore the mechanical strength of the wafers increased by 39% in comparison with the mechanical strength of
as-cut and only cleaned wafers. Longer etching times did not increase the mechanical strength of the wafers
significantly. The breaking micro-mechanism of silicon under the four-line bending test has been identified by the
analysis of fracture surfaces by SEM microscopy. Micro-crack propagation is detected at fracture origins leading to
the cleaving of the {111} and {110} crystallographic planes. Micro-cracks and surface irregularities where crack
propagation starts, seem to show the tendency to be oriented through the {111} and {100} crystallographic planes.
Crystalline Si Solar Cells with Selective Emitter for Industrial Mass Production
Creators: name: Esturo-Breton, A.
name: Binaie Masouleh, F.
name: Breselge, M.
name: Frieß, T.
name: Geiger, M.
name: Holbig, E.
name: Isenberg, J.
name: Keller, S.
name: Kühn, T.
name: Maier, J.
name: Münzer, A.
name: Schlosser, R.
name: Schmid, A.
name: Voyer, C.
name: Winter, P.
name: Bayer, K.
name: Krümberg, J.
name: Henze, S.
name: Melnyk, I.
name: Schmidt, M.
name: Klingbeil, S.
name: Walter, F.
name: Kopecek, R.
name: Peter, K.
name: Fath, 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; 1068-1071
description: This work reviews the concept phase of a joint development project between centrotherm photovoltaics,
GP Solar and ISC Konstanz. Several approaches for the fabrication of selective emitters have been investigated
experimentally. Best efficiencies of 18.3% and efficiency improvements of 0.5-0.6% abs. could be demonstrated on CZ
material. The combination of a dielectric locally patterned “diffusion inhibiting layer” with a single diffusion step has been
chosen as the core for centrotherm’s commercially available selective emitter turn key line “FlexLine Plus”.
Cryo-EM grid preparation via SAW atomisation
Creators: name: ASHTIANI, DARIUSH
Publisher: name: Monash University
Year: 2020
Subjects: Biochemistry and cell biology not elsewhere classified
Microelectromechanical systems (MEMS)
Proteins and peptides
Microtechnology
Image processing
Mechanical engineering not elsewhere classified
Acoustics and acoustical devices; waves

description: Cryo-Electron Microscopy (Cryo-EM) is a powerful tool to image the structure of proteins embedded in a layer of ice typically less than 100 nm thick, and as it sounds, the sample preparation is challenging. In this thesis, we proposed using a novel acoustic atomiser (SAW atomiser) to deposit aqueous samples onto the Electron Microscopy grid which acts as a support for thin ice. We showed that the method is functional and then characterised the atomiser and the grid to enhance the sample preparation process. This approach creates opportunities for time-resolved studies of protein reactions.
Identifying Differences In Diagnostic Skills Between Physics Students: Developing A Rubric
Creators: name: Mason, Andrew
name: Cohen, Elisheva
name: Yerushalmi, Edit
name: Singh, Chandralekha
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: Expert problem solvers are characterized by continuous evaluation of their progress towards a solution. One characteristic of expertise is self-diagnosis directed towards elaboration of the solvers' conceptual understanding, knowledge organization or strategic approach. "Self-diagnosis tasks" aim at fostering diagnostic behavior by explicitly requiring students to present diagnosis as part of the activity of reviewing their problem solutions. We have been investigating how introductory physics students perform in such tasks. Developing a robust rubric is essential for objective evaluation of students' self-diagnosis skills. We discuss the development of a grading rubric that takes into account introductory physics students' content knowledge as well as analysis, planning and presentation skills. Using this rubric, we have found the inter-rater reliability to be better than 80%. The rubric can easily be adapted to other problems, as will be discussed in a companion paper.
description: 4 pages, 1 figure, 2 tables, conference proceeding. Also see companion paper in 2008 Physics Education Research Conference (Vol. 1064, No. 1, pp. 99-102). Also see paired papers by authors: Physical Review Special Topics-Physics Education Research, 8(2), 020109 (2012); Physical Review Special Topics-Physics Education Research, 8(2), 020109 and 020110 (2012). In 2008 Physics Education Research Conference (Vol. 1064, No. 1, pp. 147-150). AIP Publishing (2008)
Mechanical Modeling of Impure Silicon Materials
Creators: name: Cochard, J.
name: Gouttebroze, S.
name: Dumoulin, S.
name: M'Hamdi, M.
name: Zhang, Z.L.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1240-1243
description: The mechanical behavior of extrinsic silicon materials is studied using a novel constitutive model. Its ability to
correctly reproduce late hardening stages and complex loading conditions is augmented by the incorporation of oxygen
locking and unlocking phenomena. The response of a silicon multicrystal to a tensile loading is studied with different
impurity concentrations and grain orientations. Inclusions are frequent in solar-grade silicon materials and their effect on
dislocation generation and on the build-up of residual stresses is assessed.
Capacitive Discharge Currents of PV Modules – Origin and Influence on System Performance
Creators: name: Stalder, M.
name: Laschinski, J.
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; 4152-4153
description: Data sheets of PV-Modules typically do not report the parasitic capacitance, because the way of assembly
and presence of moisture (e.g. dew or rain) also have an influence on its effective value. Even in moderate climates heavy
rain and morning dew may sometimes create a continuous, grounded water film on the module surface. Under such
circumstances the parasitic capacity is very close to that of an idealized plate capacitor, with only surface area, front glass
thickness and material as determining parameters. Modules with an integrated metallic backside and thin-films on
flexible laminates may possess a very large parasitic capacitance even when dry. In combination with transformerless
inverters (TL), quite large capacitive discharge currents may be generated, that trigger the residual current monitoring
unit (RCMU), so that the inverter separates the PV-plant from the grid. Such a behavior may discomfort the plant owner,
because he may not understand its reason nor the energetic loss associated with it, but even if feed-in loss can happen
with rigid glass-glass modules a statistical analysis shows that these events are so rare that their overall effect is
negligible.
Electroluminescence Findings and IR LED I-V Curve Measurement in (Wafer-based) Solar Cell Module Production
Creators: name: Bokalic, M.
name: ČCernivec, G.
name: Demolliens, A.
name: Revel, J.
name: Topic, M.
name: Policnik, M.
name: Merc, U.
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; 4184-4188
description: In the competition to provide the best performing solar cell modules, manufacturers are employing inline
inspection tools for early defect discovery. Electroluminescent imaging has proven to be one of the best methods
for the job. In this paper we use a recently developed and commercially available machine for electroluminescent
imaging and IR illuminated I-V characterisation. Systematic approach to module testing reveals defects and
deteriorations that would otherwise stay unnoticed. Selected defects (cracks, broken fingers, oven and dark dots) are
characterised, their frequency of occurrence with respect to solar cell manufacturer and different production stages is
analysed, the causes and consequences are explained. In addition to classical flash tester with AM 1.5 spectrum
illumination for I-V characterisation, I-V characterisation of the wafer-based silicon modules is also performed under
IR LED spectrum illumination. The comparison of the standard performance parameters is based on a correction
factor between the two approaches. Comparison results confirm predicted values of correction factors which turn to
depend on the type of solar cells. Because of relative high scatter of correction factors, this method is already being
improved. Despite high scatter at the time of the measurements, this method is good for module power evaluation in
the intermediate production stages.
Non-Linearity of Solar Cells Due to Non-Linear Effects Within the Surrounding Area of the Active Cell
Creators: name: Winter, S.
name: Friedrich, D.
name: Ortel, B.
name: Sperling, A.
name: Hermle, M.
name: Hohl-Ebinger, J.
name: Warta, W.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Cells and Materials, Processing Technology of

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1897-1899
description: The DSR method (Differential Spectral Responsivity, [1]) is typically used for the measurement of the spectrally resolved non-linearity of a solar cell. Because of the better signal to noise ratio often an adjustment is chosen where the solar cell is under-illuminated by the monochromatic measuring beam. In general it was found that it does not matter whether the monochromatic beam is slightly smaller or larger than the solar cell, as it was estimated that the remaining uncertainty due to this unconsidered fraction of the solar cell area would be negligible.
But actual measurements at an about 8 years old batch of reference solar cells (see Figure 1) show that under special circumstances the linearity may strongly depend on the illumination mode i.e. whether the solar cell is underilluminated
or over-illuminated by the monochromatic beam during non-linearity measurements.
Geodesic Deviation Equation in $Λ$CDM $f(T,\mathcal{T})$ gravity
Creators: name: Ganiou, M. G.
name: Salako, Ines G.
name: Houndjo, M. J. S.
name: Tossa, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The geodesic deviation equation has been investigated in the framework of $f(T,\mathcal{T})$ gravity, where $T$ denotes the torsion and $\mathcal{T}$ is the trace of the energy-momentum tensor, respectively. The FRW metric is assumed and the geodesic deviation equation has been established following the General Relativity approach in the first hand and secondly, by a direct method using the modified Friedmann equations. Via fundamental observers and null vector fields with FRW background, we have generalized the Raychaudhuri equation and the Mattig relation in $f(T,\mathcal{T})$ gravity. Furthermore, we have numerically solved the geodesic deviation equation for null vector fields by considering a particular form of $f(T,\mathcal{T})$ which induces interesting results susceptible to be tested with observational data.
description: 20 pages, 2 figures