cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Personalised Training: Integrating Recommender Systems in XR Training Platforms
Creators: name: Pretolesi, Daniele
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2022
Subjects: subject: Extended Reality
subject: Virtual Reality
subject: Augmented Reality
subject: XR Training
subject: Artificial Intelligence
subject: Recommender System

description: The fast-paced growth of Extended Reality (XR) technologies in complex environments, such as training scenarios, has highlighted the need to implement Artificial Intelligence (AI) modules in the simulations to support trainers and trainees in these unfamiliar contexts. Among the possible AI solutions, recommender systems (RS) could be used to improve the users’ interactions and experience in immersive training environments. This work describes the integration of a RS in the framework of an XR training platform and how the design of interfaces to present recommendations can maximize acceptance of the suggestions in hybrid human-intelligent systems. By allowing trainers to adapt training scenarios during the execution of the exercise, successful and personalized training goals can be achieved.
Decoherence due to gravitational time dilation: analysis of competing decoherence effects
Creators: name: Carlesso, Matteo
name: Bassi, Angelo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recently, a static gravitational field, such as that of the Earth, was proposed as a new source of decoherence [1]. We study the conditions under which it becomes the dominant decoherence effect in typical interferometric experiments. The following competing sources are considered: spontaneous emission of light, absorption, scattering with the thermal photons and collisions with the residual gas. We quantify all these effects. As we will see, current experiments are off by several orders of magnitude. New ideas are needed in order to achieve the necessary requirements: having as large as system as possible, to increase gravitational decoherence, cool it and isolated well enough to reduce thermal and collisional decoherence, and resolve very small distances.
description: 6 pages, 3 figures
Study of Structural and Morphological Properties of ZnS Films Deposited on Cu3BiS3
Creators: name: Chamorro, W.
name: Mesa, F.
name: Hurtado-Morales, M.
name: Gordillo, G.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
New Materials, Cells and Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 575-579
description: Results concerning the influence of the synthesis conditions on the growth rate of ZnS thin films
deposited by CBD on Cu3BiS3 (CBS) thin films are presented. Additionally, results of a comparative study of the
structural and morphological properties of ZnS films deposited on CBS by co-evaporation and by CBD, carried
out through XRD (X-ray diffraction), HR-TEM (high resolution transmission electron microscopy) and AFM
(atomic force microscopy) measurements are also reported. It was found that the CBD deposited ZnS films
grow with amorphous structure whereas those deposited by co-evaporation grow with polycrystalline structure.
title: Justice-oriented Research in Peace and Conflict Studies in Times of Social Distancing
Creators: name: Guntrum, Laura Gianna
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2022
Subjects: subject: Accessibility
subject: Digitally Mediated Methods
subject: Ethical Research
subject: Sensitive Context

description: Not only since the COVID-19 pandemic, many research processes had already been increasingly digitized to maintain global ex-change of information efficiently. For years, scientific empirical studies have been conducted in politically sensitive contexts using digitally mediated methods, entailing numerous risks as well as potentials. One goal of digital research is to also capture marginal-ized voices. With emerging risks related to digital research, such as digital surveillance and social media monitoring by adversaries (e.g., the military in Myanmar), research needs to be more thoughtfully conducted. Considering research ethics, an evolving discrepancy between security measures and values of social jus-tice, such as accessibility and representation, appears as most data-secure applications are not used widely and offers such as “Free Basics” entice people to use rather data-unsecure applica-tions. Reflecting on this existing discrepancy in ethical require-ments, I illustrate challenges of the German research context re-lated to digitally conducted research focusing on overt conflictive social contexts.
Towards a-Si:H Rear Passivated Industrial-Type Silicon Solar Cells
Creators: name: Hofmann, M.
name: Saint-Cast, P.
name: Bareis, D.
name: Wagenmann, D.
name: Rentsch, J.
name: Preu, R.
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; 1539-1543
description: Amorphous hydrogenated silicon (a-Si:H) has already been shown to allow for excellent surface
passivation of crystalline silicon surfaces. The implementation of this passivation layer system into an industrial
LFC-PERC-type cell (applying screen-printed front contacts) was so far hindered by the limited thermal stability of
the a-Si:H passivation quality. This paper shows that an excellent passivation is possible if plasma etching and a-Si:H
deposition are performed after the screen-printing and firing of front contacts when a phosphorus emitter with
sufficient phosphorus content is present during firing. This phosphorus-doped layer efficiently getters impurities.
Effective surface recombination velocities far below 100 cm/s are demonstrated. Hence, the use of a-Si:H based rear
passivation for industrial application seems possible.
title: Measuring Participation Through Empowerment: A Position Paper on Empowering Young Adults
Creators: name: Lindemann, Leonie
name: Nolte, Amelie
name: Volkmann, Torben
name: Jochems, Nicole
Publisher: name: Gesellschaft für Informatik e.V.
Year: 2022
Subjects: subject: empowerment
subject: young adults
subject: participation

description: This paper proposes empowerment as a measuring unit for participatory design. To substantiate this position, a literature research on empowerment of young adults was conducted, resulting in the identification of age-specific development goals and indicators for empowerment, both of which can be used to measure empowerment of young adults and thereby evaluate their participation.
Laboratory reference intervals during pregnancy, delivery and the early postpartum period
Creators: name: Klajnbard, Anna
name: Szecsi, Pal B.
name: Colov, Nina P.
name: Andersen, Malene R.
name: Jørgensen, Maja
name: Bjørngaard, Brian
name: Barfoed, Anne
name: Haahr, Katrine
name: Stender, Steen
Publisher: name: Kooperation de Gruyter
Year: 2009

description: Background: Physiological changes during pregnancy may affect laboratory parameters. Reference values based on samples from non-pregnant women are not necessarily useful for clinical decisions during pregnancy. There is a need to establish reference values during pregnancy in order to recognize pathological conditions. Methods: Eight hundred and one women with expected normal pregnancies were included in the study. Of these, 391 had no complications during pregnancy, delivery, or the early postpartum period. Blood samples were obtained at gestational weeks 13–20, 21–28, 29–34, 35–42, at labor, and 1 and 2 days postpartum. Reference intervals were calculated for 36 tests as recommended by the International Federation of Clinical Chemistry and Laboratory Medicine. Results: Many tests showed such large variations indicating that gestational age-specific reference intervals were necessary. Other tests had different but stable values when compared to non-pregnant women. A minor decrease in albumin levels was observed. This was not only due to pregnancy-associated hemodilution, since other components with the same or a larger molecular diameter did not show a similar decrease. Many tests exhibited a broad distribution around vaginal delivery and in the early postpartum period. Conclusions: Only a few parameters were unaffected during uncomplicated pregnancy, delivery, and the early postpartum period suggesting that implementation of gestational age-specific reference intervals is necessary. Clin Chem Lab Med 2010;48:237–48.
Nonstationary smooth geometric structures for contracting measurable cocycles
Creators: name: Melnick, Karin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Dynamical Systems (math.DS)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We implement a differential-geometric approach to normal forms for contracting measurable cocycles to $\mbox{Diff}^q({\bf R}^n, {\bf 0})$, $q \geq 2$. We obtain resonance polynomial normal forms for the contracting cocycle and its centralizer, via $C^q$ changes of coordinates. These are interpreted as nonstationary invariant differential-geometric structures. We also consider the case of contracted foliations in a manifold, and obtain $C^q$ homogeneous structures on leaves for an action of the group of subresonance polynomial diffeomorphisms together with translations.
description: various corrections made and remarks added; 38 pp; to appear in revised form subject to editorial input in Ergodic Theory and Dynamical Systems (see DOI)
Philemon orientalis subsp. johnstoni Mathews
Creators: name: , Mary
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Passeriformes
Meliphagidae
Philemon

description: Philemon orientalis johnstoni Mathews Philemon orientalis johnstoni Mathews, 1912a: 423 (Johnston [sic] River, North Queensland). Now Philemon citreogularis citreogularis (Gould, 1837). See Salomonsen, 1967: 405, Schodde and Mason, 1999: 287–288, Christidis and Boles, 2008: 185–191, and Higgins et al., 2008: 684– 685. HOLOTYPE: AMNH 696808, female, collected on the Johnstone River, 17.31S, 146.04E (USBGN, 1957), Queensland, Australia, on 9 July 1900, by E. Olive (no. 141). From the Mathews Collection (no. 4244) via the Rothschild Collection. COMMENTS: Mathews gave his catalog number of the holotype in the original description and the range as ‘‘ North Queensland.’’ Olive collected the single specimen of this species and clearly marked his label ‘‘ Johnstone River.’’ It was cataloged by Mathews on 1 March 1910. Robinson and Laverock (1900: 617, 634) reported on this specimen, giving the locality as Mount Sapphiri (5 Mount Sophia), 17.10S, 145.52E (USBGN, 1957), and commenting on the spatulate tips of the breast feathers, as in the adult, and yellow chin and breast feathers, a sign of immaturity. The yellow on the chin and breast is no longer present, but the soft parts colors cited by Robinson and Laverock are exactly those written by Olive on the label. The following specimens are paratypes: Inkerman, AMNH 696806 (Mathews no. 3426), female, September 1907; AMNH 696807 (3427), female, 3 October 1907, both collected by Wilfred Stalker. Salomonsen (1967: 405) recognized johnstoni, but Schodde and Mason (1999: 287– 288) and Higgins et al. (2008: 684) did not.
description: Published as part of Mary, 2011, Type Specimens Of Birds In The American Museum Of Natural History Part 9. Passeriformes: Zosteropidae And Meliphagidae, pp. 1-193 in Bulletin of the American Museum of Natural History 2011 (348) on pages 121-122
description: {"references": ["Mathews, G. M. 1912 a. A reference-list to the birds of Australia. Novitates Zoologicae 18: 171 - 446.", "Salomonsen, F. 1967. Family Meliphagidae. In R. A. Paynter, Jr (editor), Check-list of birds of the world, vol. 12: 338 - 450. Cambridge, MA: Museum of Comparative Zoology, ix + 495 pp.", "Schodde, R., and I. J. Mason. 1999. The directory of Australian birds. Passerines. Collingwood, Victoria: CSIRO Publishing, 851 pp.", "Christidis, L., and W. E. Boles. 2008. Systematics and taxonomy of Australian birds. Collingwood, Victoria: CSIRO Publishing, viii + 277 pp.", "Higgins, P. J., L. Christidis, and H. A. Ford. 2008. Meliphagidae (honeyeaters). In J. del Hoyo, A. Elliott, and D. Christie (editors), Handbook of birds of the world, vol. 13, Penduline-tits to shrikes: 498 - 691. Barcelona: Lynx Edicions, 879 pp., 60 pls., 536 photographs.", "Robinson, H. C., and W. S. Laverock. 1900. The birds of north Queensland. - Part 1. On two collections from Cooktown and the neighbourhood of Cairns. Ibis (7) 6: 617 - 653."]}
Realistic Economical Analysis on a New Linear CPV/Thermal System
Creators: name: Zhu, L.
name: Wang, Y.P.
name: Han, X.
name: Yuan, Z.
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; 4525-4529
description: The 10-50suns concentrating photovoltaic system is a wise option for green power generation because
of its more power generation in comparison to plat PV panels and lower demand on tracking precision in comparison
to high concentration systems. Various silicon solar cells for medium concentrations were tested in the present paper.
The highest efficiency for Chinese cells of 12% exists at 15 suns while the cells from Australia can attain a high
efficiency of 20% at 30 suns. A new type linear compact fresnel reflector CPV unit was proposed using two-axis
tracking and liquid immersion cooling for cells. The economical ananysis of the unit was made on the basis of real
climate data, temperature-adjusted cell efficiencies and real expenditure. The calculated electricity cost is as low as
0.74 RMB per kWh and the payback time for the whole system is about 15 years. With thermal energy reclaimed, the
electricity cost could be negative and the payback time is shortened to 7 years.
Optimization of c-Ge Substrate Cleaning Method and Fabrication of a-Si:H/c-Ge Heterojunction Solar Cells
Creators: name: Kaneko, T.
name: Kondo, M.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Advanced Photovoltaics: New Concepts and Ultra-high Efficiency
New Materials, Cells and Modules

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 693-696
description: We have investigated cleaning methods of crystalline germanium (c-Ge) substrates for application to
hydrogenated amorphous silicon (a-Si:H)/c-Ge heterojunction solar cells. When the solar cell was fabricated using
the substrate with H2O2 treatment prior to vacuum annealing, high short-circuit current density was observed. From
quantum efficiency spectrum, photogenerated carriers can be collected from wide wavelength range. The results of
optimization of substrate annealing temperature indicate that the maximum of the conversion efficiency is obtained at
450 °C. Moreover, we have presented the influence of the substrate resistivity on the characteristics of a-Si:H/c-Ge
heterojunction solar cells. The solar cell efficiency of 2.6 % (VOC=0.13 V, JSC=47.8 mA/cm2, FF=0.42) was obtained
with the substrate resistivity of 2.8 Ω·cm. The solar cell characteristics decrease with decreasing the resistivity of the
substrate. In dark J-V measurement, the increment of reverse current has been observed with decreasing the substrate
resistivity. It seems that degradation of solar cell characteristics is attributed to increasing of the leak current.
Fault Detection and Automatic Supervision Methodology for PV Systems
Creators: name: Silvestre, S.
name: Chouder, A.
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; 4534-4536
description: In this work, we show a new methodology for automatic supervision and fault detection of PV
Systems, based mainly on the analysis of the power losses. This methodology includes parameter extraction
techniques to calculate main PV system parameters from monitoring data [1-2], taking into account the real
irradiance and module temperature, allowing simulation and evaluation of the PV system behaviour in real time.
Leapfrogging Kelvin waves
Creators: name: Hietala, N.
name: Hänninen, R.
name: Salman, H.
name: Barenghi, C. F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Two vortex rings can form a localized configuration whereby they continually pass through one another in an alternating fashion. This phenomenon is called leapfrogging. Using parameters suitable for superfluid helium-4, we describe a recurrence phenomenon that is similar to leapfrogging, which occurs for two coaxial straight vortex filaments with the same Kelvin wave mode. For small-amplitude Kelvin waves we demonstrate that our full Biot-Savart simulations closely follow predictions obtained from a simpified model that provides an analytical approximation developed for nearly parallel vortices. Our results are also relevant to thin-cored helical vortices in classical fluids.
Polymorphisms of the β1-adrenergic receptor gene are associated with essential hypertension in Chinese
Creators: name: Luo, Leiming
name: Yao, Wenjing
name: Li, Rongbin
Publisher: name: Kooperation de Gruyter
Year: 2009

description: Background: The β1-adrenergic receptor (ADRB1) plays a pivotal role in mediating signal transduction of the sympathetic-adrenal system, which is involved in the regulation of cardiac output and peripheral resistance. Our goal was to determine whether the polymorphisms Arg389Gly (rs1801253) and Ser49Gly (rs1801252) of the ADRB1 gene were associated with essential hypertension in Chinese. Methods: We tested our hypothesis in two independent case-control studies, one comprised 481 patients with hypertension and 529 control subjects, and the other study comprised 212 patients and 325 control subjects. All subjects were genotyped for Arg389Gly and Ser49Gly polymorphisms. Results: The first study showed that the Arg389Arg genotype of the ADRB1 gene was associated with risk of hypertension [odds ratio (OR) 1.77, 95% confidence interval (CI) 1.09–2.98; p=0.008], and the association was replicated in the second independent population (OR 1.65, 95% CI 1.07–2.89, p=0.01). The patients with the Arg389Arg genotype had significantly higher diastolic blood pressure (DBP) than did those with Arg389Gly genotype as well as those with Gly389Gly genotype (100.29±11.01 mm Hg vs. 95.33±13.10 mm Hg and vs. 96.17±12.18 mm Hg, respectively, p=0.01, p=0.02). The association was replicated in the second study (103.7±13.3 mm Hg vs. 97.31±12.9 mm Hg and vs. 96.29±13.4 mm Hg, respectively, p=0.03, p=0.02). Heart rate also showed an association (in first study: 79.43±9.90 bpm vs. 74.87±8.96 bpm, vs. 73.92±8.18 bpm, respectively, p=0.02, p=0.014; in the second study: 81.12±8.99 bpm vs. 74.85±7.97 bpm and vs. 73.89±9.12 bpm, p=0.007, p=0.006, respectively). No association was seen between systolic blood pressure (SBP) and any of the three genotypes at amino acid position 389 in hypertensive patients, neither between the Ser49Gly polymorphisms and hypertension, nor between the Ser49Gly genotypes and DBP and heart rate. Conclusions: The polymorphisms of the ADRB1 gene were associated with essential hypertension. The Arg389Gly polymorphism of the ADRB1 gene confers higher risk for hypertension. Clin Chem Lab Med 2009;47:1227–31.
Hydrogenated  Silicon  Nitride  for  Regeneration of Light Induced  Degradation
Creators: name: Münzer, K.A.
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; 1558-1561
description: The detrimental effect of light induced degradation (LID) becomes more apparent for increasing solar
cell efficiency. Especially solar cells which rely on high minority carrier diffusion lengths suffer from LID. Because
boron oxygen complexes act as recombination centres for the LID a common solution of this problem is the
application of boron free n-doped or low oxygen silicon wafers. In contrast, this presentation reports on hydrogen
impact as another conceivable solution of the LID problem of boron doped silicon solar cells.
The degradation behaviour of solar cells with a hydrogen containing PECVD silicon nitride AR- coating
disclosed first a degradation of the solar cell parameters, but after the first drop a regeneration of the solar cell
performance occurred within the next few hours. In comparison, co-processed solar cells coated with hydrogen free
LPCVD silicon nitride revealed only degradation and no regeneration. The regeneration process of the solar cells
with hydrogenated silicon nitride AR- coating proceeded faster at higher cell temperatures under illumination.
The degradation- regeneration process could be described by an exponential decay followed by a complementary
exponential decay, respectively, F(t,T) = Ao +A*exp(-a*t) +B*(1-exp(-a*b*t))*exp(-c/T). The first addend in this
function is constant, the second addend describes the degradation and the third addend was associated with the
regeneration due to the hydrogen impact on the recombination centres.
A network epidemic model with preventive rewiring: comparative analysis of the initial phase
Creators: name: Britton, Tom
name: Juher, David
name: Saldana, Joan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: This paper is concerned with stochastic SIR and SEIR epidemic models on random networks in which individuals may rewire away from infected neighbors at some rate $ω$ (and reconnect to non-infectious individuals with probability $α$ or else simply drop the edge if $α=0$), so-called preventive rewiring. The models are denoted SIR-$ω$ and SEIR-$ω$, and we focus attention on the early stages of an outbreak, where we derive expression for the basic reproduction number $R_0$ and the expected degree of the infectious nodes $E(D_I)$ using two different approximation approaches. The first approach approximates the early spread of an epidemic by a branching process, whereas the second one uses pair approximation. The expressions are compared with the corresponding empirical means obtained from stochastic simulations of SIR-$ω$ and SEIR-$ω$ epidemics on Poisson and scale-free networks. Without rewiring of exposed nodes, the two approaches predict the same epidemic threshold and the same $E(D_I)$ for both types of epidemics, the latter being very close to the mean degree obtained from simulated epidemics over Poisson networks. Above the epidemic threshold, pairwise models overestimate the value of $R_0$ computed from simulations, which turns out to be very close to the one predicted by the branching process approximation. When exposed individuals also rewire with $α> 0$ (perhaps unaware of being infected), the two approaches give different epidemic thresholds, with the branching process approximation being more in agreement with simulations.
description: 25 pages, 7 figures
Arc Detector as an External Accessory Device for PV Inverters for Remote Detection of Dangerous Arcs on the DC Side of PV Plants
Creators: name: Häberlin, H.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Components for PV Systems
Balance of System Components

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4516-4521
description: DC arcs in PV plants with high DC voltage are much more dangerous than AC arcs, as there are no zero-crossings of
current. Despite the still relatively small number of PV plants, such arcs have already caused quite a number of fires
worldwide, causing expensive damage [5]. With the rapidly increasing number of PV plants and especially due to the
increasing age of these plants the number of such events will probably increase considerably in the next years.
Already in 1994 to 1998, in several projects in co-operation between BFH’s PV laboratory and Alpha Real, an arc
detector (AD) was developed, which was successfully tested in several PV plants in Europe and USA [1], [2]. These
devices were realised as completely stand-alone devices (with an integrated supply from the PV array and an expensive
electromechanical disconnecting switch). The best and most cost-effective solution would be the integration of
such an arc detector in the inverter. Due to the high demand for PV inverters and the necessary investment in
development time for integration of an AD into their devices, so far no manufacturer has decided yet to do so.
In this paper, after having explained the operating principle of an AD, another idea to overcome this problem is presented:
A possibility would be the development of an external AD to be positioned very close to the inverter, whose
operating power (only a few 10 mW to a few 100 mW) comes directly from the inverter and which communicates
with only two signal lines with the inverter over a simple interface. Thus such a device could be tested separately,
mass produced and the necessary development on the manufacturer’s side would be significantly reduced, they would
only have to integrate such an interface. The main objective of this paper is to get feedback from inverter
manufacturers if they would be interested and willing to include at least such an interface for an AD in their inverters.
For retrofit applications at existing plants, another approach to save at least the expensive electromechanical DC
switch would be the use of an AC circuit breaker, which can be opened by a remote control signal from an external
stand-alone AD in order to disconnect the inverter on the AC side. This will virtually cut off also its DC side. The
necessary power for the AD’s electronics can come from the PV array itself or from a cheap AC powered DC supply.
Micromorph Cells Grown at High Rate With In-Situ Intermediate Reflector in Industrial KAI PECVD Reactors
Creators: name: Sculati-Meillaud, F.
name: Feltrin, A.
name: Bugnon, G.
name: Parascandolo, G.
name: Buehlmann, P.
name: Ballif, C.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
Amorphous and Microcrystalline Silicon

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2396-2399
description: We report on results of tandem amorphous/microcrystalline (a-Si:H/μc-Si:H) silicon solar cells developed in commercial
Oerlikon Solar KAI PECVD reactors, at an excitation frequency of 40.68 MHz. The cell structure consists of a stack of
glass/front contact/pin a-Si:H/intermediate reflector/pin μc-Si:H/back contact. LPCVD (low-pressure chemical vapor
deposition) ZnO (zinc oxide) is applied as front and back transparent conductive contacts. The silicon oxide based
intermediate reflector (SOIR) is deposited in-situ.
Two regimes are studied here for μc-Si:H: (i) low silane concentration (SC) regime with SC < 10% and a growth rate of
0.40 nm/s and (ii) high silane concentration regime with SC  30% and a lower total gas flux, where the growth rate could be
raised up to 1 nm/s in a modified KAI-M reactor. In the low SC regime, our best micromorph tandem solar cells achieve
initial efficiencies up to 10.9% for a cell size > 1cm2 and in-situ SOIR. Under high SC conditions, the highest initial
efficiency reached so far is 10.5%, again with in-situ SOIR. We demonstrate that high efficiency micromorph solar cells can
hence be fabricated under conditions that are highly favorable to low-cost fabrication of tandem modules at an industrial
level. Further investigations are now focused on the improvement of μc-Si:H material at 1 nm/s.
Amorphous Silicon Passivation Applied to the Front Side Boron Emitter of n-Type Silicon Solar Cells
Creators: name: Richter, A.
name: Benick, J.
name: Hermle, M.
name: Glunz, S.W.
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; 1534-1538
description: Hydrogenated amorphous silicon (a-Si:H) was used to passivated the front side boron emitter of n-type
silicon solar cells. The main aspect was to investigate the parasitic absorption behavior of the a-Si:H layers on the solar
cells front side with different thicknesses between 5 nm and 20 nm. Therefore planar solar cells featuring a diffused
boron emitter and a diffused back surface field were fabricated. The cells reached energy conversion efficiencies
up to 17.8% with an open- circuit voltage VOC of 641 mV for an a-Si:H thickness of 15 nm. Analogous processed
reference cells, with an Al2O3 passivated emitter achieved an efficiency of 19% and a VOC of 658 mV.
New Technologies for Improvement of Metallization Line
Creators: name: Galiazzo, M.
name: Furin, V.
name: Cellere, G.
name: Baccini, A.
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; 1502-1505
description: This paper present process and productivity improvements in the metallization of crystalline silicon solar
cells through: 1) double printing process supported by a high precision alignment technology; 2) a micro-crack
inspection system integrated at the front end of the screen printing line; 3) a new short profile drying oven for effective
solvent removal. In particular, we were able to achieve double printing in production by overlapping two prints with two
different printers and two different screens, achieving 20% reduction in shading loss and 0.3-0.5% improvement in
absolute efficiency.
Propagators of random walks on comb lattices of arbitrary dimension
Creators: name: Illien, Pierre
name: Bénichou, Olivier
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study diffusion on comb lattices of arbitrary dimension. Relying on the loopless structure of these lattices and using first-passage properties, we obtain exact and explicit formulae for the Laplace transforms of the propagators associated to nearest-neighbour random walks in both cases where either the first or the last point of the random walk is on the backbone of the lattice, and where the two extremities are arbitrarily chosen. As an application, we compute the mean-square displacement of a random walker on a comb of arbitrary dimension. We also propose an alternative and consistent approach of the problem using a master equation description, and obtain simple and generic expressions of the propagators. This method is more general and is extended to study the propagators of random walks on more complex comb-like structures. In particular, we study the case of a two-dimensional comb lattice with teeth of finite length.
Thermal Stability of Sub-Stoichiometric Amorphous Silicon Oxide Layers for Crystalline Silicon Surface Passivation
Creators: name: Einsele, F.
name: Beyer, W.
name: Rau, U.
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; 1523-1528
description: We investigate thermal stability of crystalline silicon (c-Si) surface passivation with amorphous, hydrogenated,
sub-stoichiometric a-SiOx:H layers of oxygen concentrations from 0 to 10 %, deposited in a plasma enhanced
chemical vapor deposition (PECVD) process. The films show very good passivation of p-type c-Si with effective
minority carrier lifetimes up to above 1.5 ms, corresponding to surface recombination velocities as low as 9 cm/s.
Thermal hydrogen effusion measurements show a decrease of the H diffusion coefficient with increasing oxygen concentration
of the films, which can explain the higher thermal stability of the surface passivation up to oxygen concentrations
of 5 %. For higher oxygen concentrations, hydrogen effusion and infrared spectroscopy reveal the formation
of a network of interconnected voids in the material where molecular H2 can diffuse. This leads to a decrease of passivation
due to the lack of atomic H near the c-Si interface. For void rich films, annealing above 400 °C results in an
increase of passivation due to a densification of the material.
Unifying and disseminating musculoskeletal imaging software
Creators: name: Bonaretti, Serena
name: Burghardt, Andrew
name: Wong, Andy Kin On
name: Cameron, Donni
name: Santini, Francesco
name: Taddei, Fulvia
name: Iori, Gianluca
name: Stok, Kathryn
name: Niethammer, Marc
name: Pani, Martino
name: Manske, Sarah
Publisher: name: Zenodo
Year: 2023

description: This is the narrative of the proposal submitted to the CZI call Advancing Imaging Through Collaborative Projects. We are looking for feedbacks for improvement and suggestions for next submissions. In this project, we wanted to accomplish the following two aims, focused on building capacity, and training and education: Aim 1: To increase interoperability of MSK open source software by creating a certification system. We will create certification guidelines and infrastructure to homogenize code style, structure, and documentation for existing and new MSK open source software. Aim 2: To accelerate dissemination and adoption of certified software within the MSK imaging community. We will recruit and engage MSK imaging scientists through social media, an improved website, and events. We will also create educational material and train MSK developers at in-person workshops. For information and feedbacks, please email to serena.bonaretti.research@gmail.com
Philemon citreogularis subsp. carpentariae Salomonsen
Creators: name: , Mary
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Passeriformes
Meliphagidae
Philemon

description: Philemon citreogularis carpentariae Salomonsen Philemon citreogularis carpentariae Salomonsen, 1966: 8 (Normanton, northwestern Queensland, Australia). Now considered intergradient between Philemon c. sordidus and P. c. citreogularis. See Salomonsen, 1967: 405, Schodde and Mason, 1999: 287–288, Christidis and Boles, 2008: 185–191, and Higgins et al., 2008: 684–685. HOLOTYPE: AMNH 696823, adult male, collected at Normanton, 17.04S, 141.05E (Times Atlas), Queensland, Australia, on 1 May 1914, by Robin Kemp (no. 445). From the Mathews Collection via the Rothschild Collection. COMMENTS: Salomonsen gave the AMNH number of the holotype in the original description and the range as the southern coast of the Gulf of Carpentaria. The holotype was one of 24 specimens collected by Kemp for Mathews, but not entered in his catalog. The 23 paratypes of carpentariae are: Normanton, AMNH 696811–696822, 696824–696834, 14 males, five females, three sex?, one juvenile, collected between October 1913 and May 1914.
description: Published as part of Mary, 2011, Type Specimens Of Birds In The American Museum Of Natural History Part 9. Passeriformes: Zosteropidae And Meliphagidae, pp. 1-193 in Bulletin of the American Museum of Natural History 2011 (348) on page 122
description: {"references": ["Salomonsen, F. 1967. Family Meliphagidae. In R. A. Paynter, Jr (editor), Check-list of birds of the world, vol. 12: 338 - 450. Cambridge, MA: Museum of Comparative Zoology, ix + 495 pp.", "Schodde, R., and I. J. Mason. 1999. The directory of Australian birds. Passerines. Collingwood, Victoria: CSIRO Publishing, 851 pp.", "Christidis, L., and W. E. Boles. 2008. Systematics and taxonomy of Australian birds. Collingwood, Victoria: CSIRO Publishing, viii + 277 pp.", "Higgins, P. J., L. Christidis, and H. A. Ford. 2008. Meliphagidae (honeyeaters). In J. del Hoyo, A. Elliott, and D. Christie (editors), Handbook of birds of the world, vol. 13, Penduline-tits to shrikes: 498 - 691. Barcelona: Lynx Edicions, 879 pp., 60 pls., 536 photographs."]}
Continuum limit of the $D$ meson, $D_s$ meson and charmonium spectrum from $N_f=2+1+1$ twisted mass lattice QCD
Creators: name: Cichy, Krzysztof
name: Kalinowski, Martin
name: Wagner, Marc
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute masses of $D$ meson, $D_s$ meson and charmonium states using $N_f=2+1+1$ Wilson twisted mass lattice QCD. All results are extrapolated to physical light quark masses, physical strange and charm quark masses and to the continuum. Our analysis includes states with spin $J = 0,1,2$, parity $\mathcal{P} = -,+$ and in case of charmonium also charge conjugation $\mathcal{C} = -,+$. Computations are based on a large set of quark-antiquark meson creation operators. We investigate and quantify all sources of systematic errors, including fitting range uncertainties, finite volume effects, isospin breaking effects and the choice of the fitting ansatz for the combined chiral and continuum extrapolation such that the resulting meson masses can be compared directly and in a meaningful way to experimental results. Within combined statistical and systematic errors, which are between below two per mille and three percent, our results agree with available experimental results for most of the states. In the few cases where we observe discrepancies, we discuss possible reasons.
description: 54 pages, 32 figures; significantly extended discussion on several aspects; matches published version
On orienting edges of unstructured two- and three-dimensional meshes
Creators: name: Agelek, Rainer
name: Anderson, Michael
name: Bangerth, Wolfgang
name: Barth, William
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: G.4; G.2.2; G.2.3

description: Finite element codes typically use data structures that represent unstructured meshes as collections of cells, faces, and edges, each of which require associated coordinate systems. One then needs to store how the coordinate system of each edge relates to that of neighboring cells. On the other hand, we can simplify data structures and algorithms if we can a priori orient coordinate systems in such a way that the coordinate systems on the edges follows uniquely from those on the cells \textit{by rule}. Such rules require that \textit{every} unstructured mesh allows assigning directions to edges that satisfy the convention in adjacent cells. We show that the convention chosen for unstructured quadrilateral meshes in the \texttt{deal.II} library always allows to orient meshes. It can therefore be used to make codes simpler, faster, and less bug prone. We present an algorithm that orients meshes in $O(N)$ operations. We then show that consistent orientations are not always possible for 3d hexahedral meshes. Thus, cells generally need to store the direction of adjacent edges, but our approach also allows the characterization of cases where this is not necessary. The 3d extension of our algorithm either orients edges consistently, or aborts, both within $O(N)$ steps.
The Influence of Seed Layer Crystallographic Features on the Epitaxial Grown Poly-Si Thin-Film Solar Cell Performance
Creators: name: He, S.
name: Wong, J.
name: Widenborg, P.I.
name: Aberle, A.G.
name: Sproul, A.B.
name: Hao, X.J.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
Thin Film Crystalline Silicon

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2352-2354
description: Poly-crystalline silicon (Poly-Si) seed layers with different grain size and dominated grain orientation via
aluminium-induced-crystallization (AIC) were obtained from differently formed Al2O3 interfacial layers. The crystal quality
and cell performances of the poly-Si thin-film solar cells via aluminium-induced solid-phase epitaxy (ALICE) of amorphours
silicon (a-Si) precursor diodes on these different AIC seeds were compared. It was found that the best cell performance (Voc,
Jsc, and ) were obtained with ALICE on AIC seeds with smallest grains and largest fraction of (100) oriented grains, while
ALICE on AIC seeds with largest grains and smallest fraction of (100) oriented grains has the worst cell performance. The
external quantum efficiency (EQE) measurement and resulting minority diffusion length calculated by PC1D fitting show
that this is directly related to the difference in epitaxial quality of ALICE cells on AIC seeds with different crystallographic
features. Therefore, it can be concluded that the fraction of (100) oriented grains in AIC seeds is the main factor in
determining the cell performance rather than grain size.
Virtuous smoothing for global optimization
Creators: name: Lee, Jon
name: Skipper, Daphne
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: In the context of global optimization and mixed-integer non-linear programming, generalizing a technique of D'Ambrosio, Fampa, Lee and Vigerske for handling the square-root function, we develop a virtuous smoothing method, using cubics, aimed at functions having some limited non-smoothness. Our results pertain to root functions ($w^p$ with $0
Large-Grain Polycrystalline Silicon Solar Cell With AIC Seed Layer Deposited by Plasma Enhanced Chemical Vapor Deposition
Creators: name: Wang, J.-H.
name: Lien, S.-Y
name: Chen, C.F.
name: Tung, F.C.
name: Chen, K.-C.
name: Chen, C.-M.
name: Yang, J.-Y.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
Thin Film Crystalline Silicon

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2209-2211
description: This paper reports a novel low-temperature process for fabricating a Si thin-film solar cell on the glass substrate. To fabricate large-grain silicon thin film, we utilized aluminum- induced crystallization (AIC) to fabricate continuous polycrystalline silicon film (poly-Si) as seed layer and combined plasma enhanced chemical vapor deposition (PECVD) to form poly Si.
The growth of polycrystalline Si films by AIC with PECVD was investigated. It was found that the films had a bimodal grain size distribution after heat treatment, which grown up to 1 μm and that the growth of crystallites and the mobility values increased with in creasing annealing times. The process of deposition would let Si-atom extend the orientation of seed layer to grow and the poly-Si would be obtained. The result of high crystalline fractions (93 and 95% for poly-Si layer and AIC layer respectively) and high electron mobility (22 and 18 cm2/V-s for poly-Si layer and AIC layer respectively) of poly-Si films were obtained using a combination of PECVD and AIC techniques. These results indicated that the fabrication of polycrystalline silicon thin films by Al-induced crystallization with PECVD is an industrially relevant technique because of high deposition rate and high mobility.
Fairness-aware Differentially Private Collaborative Filtering
Creators: name: Yang, Zhenhuan
name: Ge, Yingqiang
name: Su, Congzhe
name: Wang, Dingxian
name: Zhao, Xiaoting
name: Ying, Yiming
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Recently, there has been an increasing adoption of differential privacy guided algorithms for privacy-preserving machine learning tasks. However, the use of such algorithms comes with trade-offs in terms of algorithmic fairness, which has been widely acknowledged. Specifically, we have empirically observed that the classical collaborative filtering method, trained by differentially private stochastic gradient descent (DP-SGD), results in a disparate impact on user groups with respect to different user engagement levels. This, in turn, causes the original unfair model to become even more biased against inactive users. To address the above issues, we propose \textbf{DP-Fair}, a two-stage framework for collaborative filtering based algorithms. Specifically, it combines differential privacy mechanisms with fairness constraints to protect user privacy while ensuring fair recommendations. The experimental results, based on Amazon datasets, and user history logs collected from Etsy, one of the largest e-commerce platforms, demonstrate that our proposed method exhibits superior performance in terms of both overall accuracy and user group fairness on both shallow and deep recommendation models compared to vanilla DP-SGD.
Development of an ADC Radiation Tolerance Characterization System for the Upgrade of the ATLAS LAr Calorimeter
Creators: name: Liu, Hongbin
name: Chen, Hucheng
name: Chen, Kai
name: Kierstead, James
name: Lanni, Francesco
name: Takai, Helio
name: Jin, Ge
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: ATLAS LAr calorimeter will perform its Phase-I upgrade during the long shut down (LS2) in 2018, a new LAr Trigger Digitizer Board (LTDB) will be designed and installed. Several commercial-off-the-shelf (COTS) multichannel high-speed ADCs have been selected as possible backups of the radiation tolerant ADC ASICs for LTDB. In order to evaluate the radiation tolerance of these back up commercial ADCs, we developed an ADC radiation tolerance characterization system, which includes the ADC boards, data acquisition (DAQ) board, signal generator, external power supplies and a host computer. The ADC board is custom designed for different ADCs, which has ADC driver and clock distribution circuits integrated on board. The Xilinx ZC706 FPGA development board is used as DAQ board. The data from ADC are routed to the FPGA through the FMC (FPGA Mezzanine Card) connector, de-serialized and monitored by the FPGA, and then transmitted to the host computer through the Gigabit Ethernet. A software program has been developed with Python, and all the commands are sent to the DAQ board through Gigabit Ethernet by this program. Two ADC boards have been designed for the TI ADS52J90 and ADI AD9249 respectively. TID test of both ADCs have been performed at BNL, and SEE test for ADS52J90 has been performed at Massachusetts General Hospital (MGH). Test results have been analyzed and presented. The test results demonstrate that our test system is very versatile, and working well for the radiation tolerance characterization of commercial multi-channel high-speed ADC for the upgrade of the ATLAS LAr calorimeter. It is applicable to other collider physics experiments where radiation tolerance is required as well.