cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Two-way classical communication remarkably improves local distinguishability
Creators: name: Owari, Masaki
name: Hayashi, Masahito
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze the difference in the local distinguishability among the following three restrictions; (i) Local operations and only one-way classical communications (one-way LOCC) are permitted. (ii) Local operations and two-way classical communications (two-way LOCC) are permitted. (iii) All separable operations are permitted. We obtain two main results concerning the discrimination between a given bipartite pure state and the completely mixed state with the condition that the given state should be detected perfectly. As the first result, we derive the optimal discrimination protocol for a bipartite pure state in the cases (i) and (iii). As the second result, by constructing a concrete two-way local discrimination protocol, it is proven that the case (ii) is much better than the case (i), i.e., two-way classical communication remarkably improves the local distinguishability in comparison with one-way classical communication at least for a low-dimensional bipartite pure state.
description: 26 pages, 6 figures. accepted version
Breast Mass Detection with Faster R-CNN: On the Feasibility of Learning from Noisy Annotations
Creators: name: Famouri, Sina
name: Morra, Lia
name: Mangia, Leonardo
name: Lamberti, Fabrizio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Medical Physics (physics.med-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: In this work we study the impact of noise on the training of object detection networks for the medical domain, and how it can be mitigated by improving the training procedure. Annotating large medical datasets for training data-hungry deep learning models is expensive and time consuming. Leveraging information that is already collected in clinical practice, in the form of text reports, bookmarks or lesion measurements would substantially reduce this cost. Obtaining precise lesion bounding boxes through automatic mining procedures, however, is difficult. We provide here a quantitative evaluation of the effect of bounding box coordinate noise on the performance of Faster R-CNN object detection networks for breast mass detection. Varying degrees of noise are simulated by randomly modifying the bounding boxes: in our experiments, bounding boxes could be enlarged up to six times the original size. The noise is injected in the CBIS-DDSM collection, a well curated public mammography dataset for which accurate lesion location is available. We show how, due to an imperfect matching between the ground truth and the network bounding box proposals, the noise is propagated during training and reduces the ability of the network to correctly classify lesions from background. When using the standard Intersection over Union criterion, the area under the FROC curve decreases by up to 9%. A novel matching criterion is proposed to improve tolerance to noise.
A Localized Weighted Efficiency for Inverters
Creators: name: Llarena, E.
name: Montes, C.
name: Linares, A.
name: Molina, D.
name: Pío, A.
name: González, O.
name: López-Manzanares, L.
name: Fernández, J.
name: Rodríguez, J.
name: Friend, M.
name: Cendagorta, M.
Publisher: name: WIP
Year: 2012
Subjects: Components for PV Systems
Balance of System Components

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 3642-3644
description: Since its foundation in 1990, the Instituto Tecnológico y de Energías Renovables, S.A. (ITER) has
been devoted to the technologic development towards promoting the Renewable Energies in the island of Tenerife
(Canary Islands, Spain). Thus, in the field of Photovoltaics, ITER has being installing, operating, maintaining and
promoting grid-connected PV plants on a commercial basis in various parts of the island, having installed a total
power which nowadays is nearly 42 MW. All the inverters used in these facilities are from the Teide 100 model, also
developed and built by ITER, which is a three phase 100 kW inverter.
Production recordings from these PV installations energy meters have been analyzed, over a considerable period of
time, in order to obtain how the energy is distributed over power, suggesting that possibly neither the European nor
the Californian weighting criteria describe accurately the local conditions.
This paper describes the process of statistically defining a localized weighted efficiency for inverters, based on real
production data, which we believe that could better characterize local PV installations in order to optimize their
production. Thus, the characterization tests realized on Teide 100 inverters gave typical 98% peak-efficiency in
normal operation conditions (i.e. when the plant operates at MPP), and the weighted efficiencies gave 97.5 for the
European and 97.8 for the Californian ones.
IRAS 18511+0146: a proto Herbig Ae/Be cluster?
Creators: name: Vig, S.
name: Testi, L.
name: Walmsley, M.
name: Molinari, S.
name: Carey, S.
name: Noriega-Crespo, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Context: The evolution of a young protocluster depends on the relative spatial distributions and dynamics of both stars and gas. Aims: We study the distribution and properties of the gas and stars surrounding the luminous (10^4 L_sun) protocluster IRAS 18511+0146. Methods: IRAS 18511+0146 and the cluster associated with it has been investigated using the sub-millimetre (JCMT-SCUBA), infrared (Spitzer-MIPSGAL, Spitzer-GLIMPSE, Palomar) and radio (VLA) continuum data. Cluster simulations have been carried out in order to understand the properties of clusters as well as to compare with the observations. Results: The central most obscured part of the protocluster coincident with the compact sub-millimetre source found with SCUBA is responsible for at least 2/3 of the total luminosity. A number of cluster members have been identified which are bright in mid infrared and show rising (near to mid infrared) spectral energy distributions suggesting that these are very young stellar sources. In the mid infrared 8.0 micron image, a number of filamentary structures and clumps are detected in the vicinity of IRAS 18511+0146. Conclusions: Based on the luminosity and cluster size as well as on the evolutionary stages of the cluster members, IRAS 18511+0146 is likely to be protocluster with the most massive object being a precursor to a Herbig type star.
description: Accepted by the Astronomy and Astrophysics (23 Pages, 5 Tables, 12 Figures)
Impact of Interface Passivation on the Band Alignment of a-Si:H(n)/c-Si(p) Heterostructure Solar Cells
Creators: name: Mikolasek, M.
name: Zhang, D.
name: Vanko, G.
name: Kovác, J.
name: Zeman, M.
name: Harmatha, L.
Publisher: name: WIP
Year: 2012
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 1534-1537
description: The paper deals with investigation of the conduction band offset at n-type amorphous/p-type crystalline
silicon interface and the impact of intrinsic amorphous silicon passivation layer thickness on the band alignment.
Coplanar conductance measurements supported by the ASA simulation were used to determine the conduction band
offset of sample without passivation layer and samples with 5 nm and 10 nm thin passivation layers. The investigations
revealed decreasing of the conduction band offset upon the increase of the passivation layer thickness. It was shown that
lower tunneling rate via thicker passivation layer shift the conduction band offset towards the values presented at the
intrinsic amorphous silicon/crystalline silicon interface. The considerable suppression of tunneling via thicker passivation
layer was confirmed by analysis of the I-V curves of Schottky structures with different thicknesses of intrinsic amorphous
silicon layer introduced at the metal/silicon interface.
Spin(7)-manifolds with parallel torsion form
Creators: name: Puhle, Christof
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53C25, 81T30

description: Any Spin(7)-manifold admits a metric connection \nabla^c with totally skew-symmetric torsion T^c preserving the underlying structure. We classify those with \nabla^c-parallel T^c\neq0 and non-Abelian isotropy algebra iso(T^c)
description: 16 pages, minor revision
Superconvergence of Galerkin variational integrators
Creators: name: Ober-Blöbaum, Sina
name: Vermeeren, Mats
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We study the order of convergence of Galerkin variational integrators for ordinary differential equations. Galerkin variational integrators approximate a variational (Lagrangian) problem by restricting the space of curves to the set of polynomials of degree at most $s$ and approximating the action integral using a quadrature rule. We show that, if the quadrature rule is sufficiently accurate, the order of the integrators thus obtained is $2s$.
description: 7 pages, no figures. This work has been submitted to IFAC for possible publication
Pion-Photon Transition Distribution Amplitudes
Creators: name: Courtoy, A.
name: Noguera, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The newly introduced Transition Distribution Amplitudes (TDAs) are discussed for the $π$-$γ$ transitions. Relations between $π$-$γ$ and $γ$-$π$ TDAs for different cases are given. Numerical values for the $π$-$γ$ TDAs in different models are compared. GPD's features are extended to TDAs and the role of PCAC highlighted. We give hints for the evaluation of cross sections for meson pair production in our approach.
description: To appear in the proceedings of the Joint Meeting Heidelberg-Liege-Paris-Wroclaw (HLPW08), Spa, Belgium, 6-8 March 2008; uses aip-6s.clo, aipproc.cls and aipxfm.sty (included)
A Cleanliness Monitoring System for PV Installations
Creators: name: Llarena, E.
name: Montes, C.
name: Linares, A.
name: Molina, D.
name: Pío, A.
name: González, O.
name: Moncho, G.
name: Padrón, M.
name: Fernández, J.
name: Rodríguez, J.
name: Friend, M.
name: Cendagorta, M.
Publisher: name: WIP
Year: 2012
Subjects: PV Systems
Large PV Power Plants and Distributed PV: System Aspects and Grid Connection

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 3951-3954
description: The Instituto Tecnológico y de Energías Renovables, S.A. developed and deployed an automatized
SCADA system which ensures the correct performance of its multi-MW PV facilities. Such framework has been
extended to include a Cleaning Monitoring System (CMS), conceived for estimating when and how often such
facilities, which are placed in different locations, may require being washed. The present paper explains what the
CMS is about and how it operates after having run for several months already.
Location, correlation, radiation: where is the $σ$, what is its structure and what is its coupling to photons?
Creators: name: Pennington, M. R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Scalar mesons are a key expression of the infrared regime of QCD. The lightest of these is the $σ$. Now that its pole in the complex energy plane has been precisely located, we can ask whether this state is transiently ${\bar q}q$ or ${\bar {qq}} qq$ or a multi-meson molecule or largely glue? The two photon decay of the $σ$ can, in principle, discriminate between these possibilities. We review here how the $γγ\toπ^+π^-$, $π^0π^0$ cross-sections can be accurately computed. The result not only agrees with experiment, but definitively fixes the radiative coupling of the $σ$. This equates to a two photon width of $(4.1 \pm 0.3)$ keV, which accords with the simple non-relativistic quark model expectation for a ${\bar u}u, {\bar d}d$ scalar. Nevertheless, robust predictions from relativistic strong coupling QCD are required for each of the possible compositions before we can be sure which one really delivers the determined $γγ$ coupling.
description: 18 pages, 11 figures. To be published in Modern Physics Letters A A number of references updated and three sentences changed in the text to reflect these
BIOME 2021 QSSI Lightning talk
Creators: name: Hartnett, Rachel
name: Hamman, Elizabeth
name: Kondrashov, Dmitry
name: Piechnik, Denise
name: Sawyer, Sara
Publisher: name: QUBES Educational Resources
Year: 2021

description: Our team, Quantitative Skills and Science Identity (QSSI), met in the fall of 2021 to discuss and develop a methodology to assess the effectiveness of Data Nugget/Scientist Spotlight activities. We have worked on finding established and reliable instruments to measure 1) quantitative skills, 2) interest in developing quantitative skills, and 3) a sense of belonging in STEM. This presentation shares our findings, and goals moving forward.
Interactions of conventional and nonconventional tonal determinants in the string quartets of Béla Bartók
Creators: name: Morrison, Charles Douglas
Publisher: name: University of British Columbia
Year: 2010

description: Although there exists substantial literature on Béla Bartók's music, few sources address his tonal language in a penetrating, analytical way. Analyses often lack precision in demonstrating adaptations of conventional principles of tonal orientation in the often nontraditional contexts of Bartók's music, and are generally inconclusive in explaining the particulars of interaction between conventional and nonconventional tonal determinants. The present study seeks to demonstrate adaptations and interactions of specific conventional and nonconventional tonal determinants, taking these shortcomings into account. In Chapter I, a brief but critical survey of approaches to tonality in Bartók is followed by a redefinition of tonality, which embodies both conventional and nonconventional determinants of centric orientation, many of the latter being analogues of the former. Progression and prolongation are cited as two fundamental processes by which tonal orientation is effected. Because Bartók's string quartets span his compositional career, reflecting global changes in his musical language, they are particularly convenient for study. Chapter II introduces four categories of progression relevant to Bartók's quartets: conventionally functional progressions, nonconventional tonicizing progressions, fifth progressions, and linear progressions. Each is further subdivided, with discussion of the theoretical principles of classification, examination of the existing literature where relevant, and illustration of the element of' progression in question, usually by excerpt from the quartets. Chapter III takes Heinrich Schenker's theory of prolongation as a departure point for the study of nonconventional but analogous procedures in Bartók's quartets. Prolongation over foreground, mid-level, and large-scale spans is studied, and subcategories of mid-level prolongation in particular are discussed in relation to commentary by Wallace Berry, Craig Ayrey, and Arnold Whittall on this vital but problematic concept. Each prolongational determinant is exemplified in passages from the quartets. The focus of Chapter IV is the final movement of Bartók's sixth quartet, the analysis of which illuminates details of interaction between conventional and nonconventional tonal determinants—such interaction being crucial in understanding Bartók's tonality as a unified system of functionally interrelated principles of centric orientation and structural coherence. Chapter V summarizes the findings of the analysis in Chapters II-IV.
Sfermion masses in the supersymmetric economical 3-3-1 model
Creators: name: Dong, P. V.
name: Huong, Tr. T.
name: Thuy, N. T.
name: Long, H. N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Sfermion masses and eigenstates in the supersymmetric economical 3-3-1 model are studied. By lepton number conservation, the exotic squarks and superpartners of ordinary quarks are decoupled. Due to the fact that in the 3-3-1 models, one generation of quarks behaves differently from other two, by R-parity conservation, the mass mixing matrix of the squarks in this model are smaller than that in the Minimal Supersymmetric Standard Model (MSSM). Assuming substantial mixing in pairs of highest flavours, we are able to get mass spectrum and eigenstates of all the sfermions. In the effective approximation, the slepton mass splittings in the first two generations, are consistent with those in the MSSM, namely: $ m^2_{\tilde{l}_L} - m^2_{\tildeν_{l L}} = m_W^2 \cos 2\ga$ $(l=e, μ)$. In addition, within the above effective limit, there exists degeneracy among sneutrinos in each multiplet: $m^2_{\tildeν_{l L}} = m^2_{\tildeν_{l R}}$. In contradiction to the MSSM, the squark mass splittings are different for each generation and not to be $ m_W^2 \cos 2\ga$.
description: 34 pages, 2 figures, Revised version in which D-term and F-term contributions are slightly changed
Global study of separable pairing interaction in covariant density functional theory
Creators: name: Teeti, S.
name: Afanasjev, A. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A systematic global investigation of pairing properties based on all available experimental data on pairing indicators has been performed for the first time in the framework of covariant density functional theory. It is based on separable pairing interaction of Ref. [1]. The optimization of the scaling factors of this interaction to experimental data clearly reveals its isospin dependence in neutron subsystem. However, the situation is less certain in proton subsystem since similar accuracy of the description of pairing indicators can be achieved both with isospin-dependent and mass-dependent scaling factors. The differences in the functional dependencies of scaling factors lead to the uncertainties in the prediction of proton and neutron pairing properties which are especially pronounced at high isospin and could have a significant impact on some physical observables. For a given part of nuclear chart the scaling factors for spherical nuclei are smaller than those for deformed ones; this feature exists also in non-relativistic density functional theories. Its origin is traced back to particle-vibration coupling in odd-$A$ nuclei which is missing in all existing global studies of pairing. Although the present investigation is based on the NL5(E) covariant energy density functional (CEDF), its general conclusions are expected to be valid also for other CEDFs built at the Hartree level.
description: 19 pages, 10 figures, Physical Review C in press
Modelling the Performance of Simple Off-Grid PV Systems
Creators: name: Huld, T.
Publisher: name: WIP
Year: 2012
Subjects: PV Systems
Off-grid Applications

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 4254-4259
description: A new model is presented for the detailed simulation of a simple off-grid PV system with battery
storage. The model is based on detailed laboratory measurements of the performance of the module and battery
combined with a mathematical model for the interaction between the module and battery under varying conditions of
irradiance and temperature. The model has been validated against experimental data on a small PV-battery system
with a power load, with results showing that the model is able to predict the total energy delivered to the load with an
error of <2.5%. The model has been implemented in GIS software to make it possible to apply it to large
geographical areas. A study for Africa is presented, calculating the optimum size of PV module and battery for a
given desired energy consumption and maximum reliability of power availability. The model will be implemented in
the PVGIS web application for PV performance estimation.
Isabelle's Metalogic: Formalization and Proof Checker
Creators: name: Nipkow, Tobias
name: Roßkopf, Simon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: Isabelle is a generic theorem prover with a fragment of higher-order logic as a metalogic for defining object logics. Isabelle also provides proof terms. We formalize this metalogic and the language of proof terms in Isabelle/HOL, define an executable (but inefficient) proof term checker and prove its correctness w.r.t. the metalogic. We integrate the proof checker with Isabelle and run it on a range of logics and theories to check the correctness of all the proofs in those theories.
description: to be published in In Platzer, A., Sutcliffe, G. (eds.) 28th International Conference on Automated Deduction (CADE-28), LNCS, Springer, 2021
Coexistence of static magnetism and superconductivity in SmFeAsO1-xFx as revealed by muon spin rotation
Creators: name: Drew, A. J.
name: Niedermayer, Ch.
name: Baker, P. J.
name: Pratt, F. L.
name: Blundell, S. J.
name: Lancaster, T.
name: Liu, R. H.
name: Wu, G.
name: Chen, X. H.
name: Watanabe, I.
name: Malik, V. K.
name: Dubroka, A.
name: Roessle, M.
name: Kim, K. W.
name: Baines, C.
name: Bernhard, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The recent observation of superconductivity with critical temperatures up to 55 K in the FeAs based pnictide compounds marks the first discovery of a non copper-oxide based layered high-Tc superconductor (HTSC) [1-3]. It has raised the suspicion that these new materials share a similar pairing mechanism to the cuprates, since both exhibit superconductivity following charge doping of a magnetic parent material. Here we present a muon spin rotation study on SmFeAsO1-xFx (x=0-0.30), which shows that static magnetism persists well into the superconducting regime. The analogy with the cuprates is quite surprising since the parent compounds appear to have different magnetic ground states: itinerant spin density wave for the pnictides contrasted with the Mott-Hubbard insulator in the cuprates. Our findings suggest that proximity to magnetic order and associated soft magnetic fluctuations, rather than the strong electronic correlations in the vicinity of a Mott-Hubbard-metal-to-insulator transition, may be the key ingredients of HTSC.
description: Accepted in Nature Materials
Study and Perspective of Locally Gallium Doping via Laser Treatment for Silicon Based Solar Cells
Creators: name: Izzi, M.
name: Serenelli, L.
name: Salza, E.
name: Tucci, M.
name: Nenzi, P.
name: Balucani, M.
Publisher: name: WIP
Year: 2012
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 1842-1845
description: The state of the art suggests that to get high efficiency in multi crystalline solar cells the conventional cell process
should provide low surface recombination losses by good surface passivation and/or Back Surface Field (BSF) formation. The ptype
doping is a key issue to achieve high efficiency solar cell: n-type wafer needs high quality p-type emitter while effective
Back Surface Field (BSF) require strong p+ region in p-type silicon. We propose Gallium as an alternative to Boron or
Aluminum widely used as p-type doping sources. Due the Ga lower melting point (29.76 °C), it can be locally disposed in a fast
and reliable way on silicon surface and then treated by laser to promote its diffusion into the silicon network. Moreover the Ga
removal from the silicon surface is faster than Al or B oxide. Despite to the poor segregation coefficient in c-Si, Ga does not
show any metastability effect compared to boron doping in c-Si. Then pulsed Nd-YAG laser has been used to promote the Ga
diffusion into 1Ωcm p-type doped silicon substrate, varying beam focus as well as intensities, performing different patterns on
the c-Si surface; hall profile to evaluate the sheet resistance and activated doping profile, Ga doped region with Ag and Ni/Cu
metal contacts by Transfer Length Method to calculate contact specific resistivity has been used. Laser treatment shows an
effective Ga doping concentration with peak as high as 2x1019 cm-3 with Ga depth profile similar to the Al laser induced doped
diffusion layers.
Suppression of correlated electron escape in double ionization in strong laser fields
Creators: name: Eckhardt, Bruno
name: Prauzner-Bechcicki, Jakub S.
name: Sacha, Krzysztof
name: Zakrzewski, Jakub
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The effect of the Pauli exclusion principle on double ionization of He atoms by strong, linearly polarized laser pulses is analyzed. We show that correlated electron escape, with electron momenta symmetric with respect to the field polarization axis, is suppressed if atoms are initially prepared in the metastable state 3S. The effect is a consequence of selection rules for the transition to the appropriate outgoing two-electron states. We illustrate the suppression in numerical calculations of electron and ion momentum distributions within a reduced dimensionality model.
description: 4 pages, 2 figures
A comparative analysis of the outer-belt primitive families
Creators: name: De Prá, M. N.
name: Pinilla-Alonso, N.
name: Carvano, J.
name: Licandro, J.
name: Morate, D.
name: Lorenzi, V.
name: de León, J.
name: Campins, H.
name: Mothé-Diniz, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Context. Asteroid families are witnesses to the intense collisional evolution that occurred on the asteroid belt. The study of the physical properties of family members can provide important information about the state of differentiation of the parent body and provide insights into how these objects were formed. Several of these asteroid families identified across the main belt are dominated by low-albedo, primitive asteroids. These objects are important for the study of Solar System formation because they were subject to weaker thermophysical processing and provide information about the early conditions of our planetary system. Aims. We aim to study the diversity of physical properties among the Themis, Hygiea, Ursula, Veritas, and Lixiaohua families. Methods. We present new spectroscopic data, combined with a comprehensive analysis using a variety of data available in the literature, such as albedo and rotational properties. Results. Our results show that Themis and Hygiea families, the largest families in the region, present similar levels of hydration. Ursula and Lixiaohua families are redder in comparison to the others and present no sign of hydrated members based on the analysis of visible spectra. Conversely, Veritas presents the highest fraction of hydrated members. Conclusions. This work demonstrates a diverse scenario in terms of the physical properties of primitive outer-belt families, which could be associated with dynamical mixing of asteroid populations and the level of differentiation of the parental body.
Infrared point source variability between the Spitzer and MSX surveys of the Galactic mid-plane
Creators: name: Robitaille, Thomas P.
name: Cohen, Martin
name: Whitney, Barbara A.
name: Meade, Marilyn
name: Babler, Brian
name: Indebetouw, Remy
name: Churchwell, Ed
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a list of 552 sources with suspected variability, based on a comparison of mid-infrared photometry from the GLIMPSE I and MSX surveys, which were carried out nearly a decade apart. We were careful to address issues such as the difference in resolution and sensitivity between the two surveys, as well as the differences in the spectral responses of the instruments. We selected only sources where the IRAC 8.0 and MSX 8.28 micron fluxes differ by more than a factor of two, in order to minimize contamination from sources where the difference in fluxes at 8 micron is due to a strong 10 micron silicate feature. We present a subset of 40 sources for which additional evidence suggests variability, using 2MASS and MIPSGAL data. Based on a comparison with the variability flags in the IRAS and MSX Point-Source Catalogs we estimate that at least a quarter of the 552 sources, and at least half of the 40 sources are truly variable. In addition, we tentatively confirm the variability of one source using multi-epoch IRAS LRS spectra. We suggest that most of the sources in our list are likely to be Asymptotic Giant Branch stars.
description: 47 pages, 12 Figures, 3 Tables, accepted for publication in AJ
The diamond-alpha Riemann integral and mean value theorems on time scales
Creators: name: Malinowska, Agnieszka B.
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 26A42; 39A12

description: We study diamond-alpha integrals on time scales. A diamond-alpha version of Fermat's theorem for stationary points is also proved, as well as Rolle's, Lagrange's, and Cauchy's mean value theorems on time scales.
description: 14 pages
Rank and crank moments for overpartitions
Creators: name: Bringmann, Kathrin
name: Lovejoy, Jeremy
name: Osburn, Robert
Publisher: name: arXiv
Year: 2008
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11F11, 11P83 (Primary), 05A19 (Secondary)

description: We study two types of crank moments and two types of rank moments for overpartitions. We show that the crank moments and their derivatives, along with certain linear combinations of the rank moments and their derivatives, can be written in terms of quasimodular forms. We then use this fact to prove exact relations involving the moments as well as congruence properties modulo 3, 5, and 7 for some combinatorial functions which may be expressed in terms of the second moments. Finally, we establish a congruence modulo 3 involving one such combinatorial function and the Hurwitz class number H(n).
description: 14 pages
Photospectroscopy of I3- Species in Dye Solar Cells (DSC) as a Test for the Sealing and Diffusion Barrier Properties of Glass Frit
Creators: name: Flarup Jensen, K.
name: Veurman, W.
name: Brandt, H.
name: Bialecka, K.
name: Sarker, S.
name: Rahman, M.M.
name: Im, C.
name: Hinsch, A.
name: Lee, J.-J.
Publisher: name: WIP
Year: 2012
Subjects: Thin Film Solar Cells
Organic-based PV

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 2925-2929
description: To ensure long-term stable dye-sensitized solar cells (DSCs) and modules a hermetic sealing is
required. This research investigates the chemical stability of I-/I3- redox electrolyte and four different glass frits
(GF). Sintered GF layers were openly exposed to non-aqueous redox electrolyte and redox electrolyte with 1, 5
and 10 wt% H2O in thin, encapsulated cells. The I3- absorbance change was monitored over 100 days. The change
in I3- absorbance was assigned to a reaction between the GF and I-/I3- electrolyte and was used to evaluate the
chemical stability of the different GFs. Two out of the four investigated GFs were unstable when H2O was added
to the redox electrolyte. The effect of H2O caused metal ion leaching which was determined from EDX analysis
of evaporated electrolyte samples. A GF based on Bi2O3-SiO2-B2O3 with low bond strength leached bismuth into
electrolyte, and formed the BiI4- complex. A GF based on ZnO-SiO2-Al2O3 also became unstable when H2O was
added to redox electrolyte. Leaching of zinc ions due to exchange with H+ resulted in the formation of a zinciodine
complex which caused I3- depletion. By applying the test design to different types of GFs, the material
suitability in the DSC working environment was investigated.
Cassette mutagenic analysis of the signal peptide of yeast invertase
Creators: name: Ngsee, Johnny Kuan
Publisher: name: University of British Columbia
Year: 2010

description: The SUC2 locus of Saccharomyces cerevisiae encodes two forms of invertase; a constitutively expressed cytoplasmic enzyme and a glucose-repressible secreted and glycosylated enzyme which is initially produced with an amino-terminal signal peptide. The coding sequence of the SUC2 locus has been placed under the control of the constitutive ADH1 promoter and transcription terminator in a centromere based yeast plasmid vector from which invertase is expressed in a Sue" strain of yeast. Oligonucleotide-directed mutagenesis has been used to create a PstI site in the gene at the point encoding the signal peptide cleavage site. An internal methionine codon, the translation start for the cytoplasmic invertase, has been replaced by a serine codon. Mutants in the signal peptide sequence have been produced by replacing the region of the gene upstream of the PstI site with synthetic oligonucleotide cassettes with mixtures of nucleotides at several positions. The mutants could be divided into three classes based on their ability to secrete invertase. The first class of mutants produced secreted invertase, but in reduced amount. There is no obvious correlation between mutation and phenotype. The second class, represented by mutant 4-55B, also exhibited a reduced level of invertase, but a significant fraction (30%) of the enzyme is intracellular. This mutant had a delay in signal peptide cleavage which retards passage of invertase through the secretory pathway. The third class was defective in secretion. Most were defective in translocation from the cytoplasm to the lumen of the endoplasmic reticulum (ER), and produced enzymatically active, non-glycosylated pre-invertase in the cytoplasm. This class of mutant invertases, when transcribed and translated in vitro, was not processed by canine pancreas signal recognition particle (SRP) and microsomes. Comparison of the sequences of the mutant signal peptides of this non-translocating class identifies amino acids at the extreme amino-terminus as the causative defect.
Thin Bifacial Low-Concentrator Argentum-Free n-Type Silicon Solar Cell
Creators: name: Untila, G.G.
name: Kost, T.
name: Chebotareva, A.B.
name: Zaks, M.
name: Sitnikov, A.
name: Solodukha, O.
name: Shvarts, M.Z.
Publisher: name: WIP
Year: 2012
Subjects: Material Studies, New Concepts and Ultra-High Efficiency
Terrestrial Concentrator Systems

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 271-273
description: Results regarding bifacial low concentrator thin n-type Ag free Cz silicon solar cells based on Indium-
Tin-Oxide/(p+nn+)Cz-Si/Indium-Fluorine-Oxide structure are presented. Both surfaces of the cells were textured. The
(p+nn+)Cz-Si structures were produced by diffusion of boron and phosphorus from deposited B- and P-containing
glasses followed by etch-back. Transparent conducting oxide (TCO) films which act as passivating and antireflection
electrodes were deposited by ultrasonic spray pyrolysis method. Front/rear contact grids of cooper wire were attached
by a low-temperature (160 °C) lamination method simultaneously to the front/rear TCO film and to the commutation
ribbons, which are located outside of the structure. The shadowing from the contacts was of ~4.5%. The resulting solar
cells showed front/rear efficiencies of 16.7–16.9%/16.3–16.5% respectively at 1-3 suns (bifaciality of ~98%). For
the albedo of 20–50% LGCell produce such amount of energy that can be produced by a monofacial solar cell with
an efficiency of 20–24.9%.
#ParidadEnLasListas - Elecciones Generales 2021
Creators: name: Santamarina, Sofia
Publisher: name: figshare
Year: 2021
Subjects: Gender studies

description: Con motivo de las elecciones legislativas 2021, desde la Defensoría del Pueblo de la Ciudad Autónoma de Buenos Aires coordinamos junto a la Asociación de Defensoras y Defensores del Pueblo de la República Argentina (ADPRA), la realización de un monitoreo de las listas de candidaturas a diputados/as y senadores/as nacionales y legisladores/as provinciales.

El objetivo del monitoreo fue observar el cumplimiento de las leyes de paridad - la nacional y las provinciales - , es decir, que las listas partidarias estén integradas por 50% de mujeres y 50% de varones.
Asimismo, se relevó otro de los requisitos de cumplimiento: la alternancia desde el primer/a candidato/a titular hasta el último suplente. También se monitoreó la presencia de mujeres encabezando las listas, que si bien no es un requisito establecido por ley, constituye un símbolo en relación al cambio cultural que se espera de este tipo de
legislación.

El monitoreo dio cuenta de un alto nivel de cumplimiento de la ley de paridad nacional y las leyes homólogas provinciales. A a nivel nacional, tanto para la categoría de diputados/as como la de senadores/as nacionales, el cumplimiento fue del 100%, mejorando los indicadores de
las PASO 2021 y de las Elecciones Generales 2019.

Respecto al encabezamiento de las listas, para ambas categorías nacionales se observa un aumento de las listas encabezadas por mujeres, respecto a la última elecciones general (año 2019) y a las PASO 2021, más drástico para el caso de la Cámara Alta que aumentó 15 puntos porcentuales respecto al 2019 y 7 puntos porcentuales respecto a las PASO 2021.

A nivel provincial, los hallazgos son similares: alto porcentaje de cumplimiento de la paridad (97% para Diputados/as provinciales y 100% para Senadores/as provinciales) y encabezamientos de listas por mujeres que se ubican entre el 29% en promedio para senadores/as provinciales y el 42% en promedio para diputados/as provinciales.
Creative Use of BIPV Materials: Barriers and Solutions
Creators: name: Hardy, D.A.
name: Blekastad, S.
name: Kerrouche, A.
name: Roaf, S.C.
name: Richards, B.S.
Publisher: name: WIP
Year: 2012
Subjects: PV Systems
PV and Architecture

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 4177-4182
description: Inventive use of photovoltaic (PV) materials in architecture can be developed through use of PV in
artworks. This is particularly important in increasing the uptake of building-integrated building-integrated photovoltaics
(BIPV), by developing novel methods of combining and installing PV materials. Current examples of PV artwork and
design are examined, from small to large scale, to assess the current design limitations. The design of two PV artworks is
discussed in detail, including an artwork that uses the principle of the luminescent solar concentrator (LSC), to show the
way in which design hurdles are discovered and overcome. Challenges range from difficulties in obtaining small
quantities of PV materials; the balance between efficiency and artistic effect; through to technical and siting issues that an
artist must address when designing a functional PV structure. Methods of overcoming these barriers are explored,
including the use of lumogen dyes in encapsulant materials.
Prefácio do fascículo especial dedicado ao do II Simpósio Nacional de Frutos Secos
Creators: name: Bento, Albino
name: Reis, Pedro
Publisher: name: Revista de Ciências Agrárias
Year: 2021

description: A produção de frutos secos é, em algumas regiões do país, a principal fonte de rendimento agrícola das populações rurais, assegurando, para além de um valor económico e social muito relevantes, outras componentes fundamentais, tais como a manutenção de sistemas ecologicamente adaptados, a conservação da biodiversidade e da herança cultural. Portugal possui condições edafo-climáticas favoráveis para o cultivo da amendoeira, da aveleira, da alfarrobeira, da nogueira e também do pistácio, sobretudo no interior do país, onde estas alternativas culturais representam um enorme potencial que urge aproveitar. A produção está concentrada em pomares de pequena dimensão, com baixa produtividade e a utilização, frequente, de práticas culturais desadequadas. Atualmente, a situação está a evoluir positivamente, sobretudo em relação à amendoeira, cultura na qual se gerou uma nova dinâmica em Trás-os-Montes, Beira Interior e Alentejo, com o aparecimento de projetos de pequena, média e grande dimensão, recorrendo às mais modernas tecnologias e a material vegetal com maior potencial produtivo. Por outro lado, assiste-se ao aparecimento de novas e renovadas empresas na área do processamento e aparecimento de novos produtos, num mercado muito competitivo e exigente. Os frutos secos são reconhecidos pela sua riqueza nutricional em particular vitaminas, sais minerais, fibras vegetais e compostos proteicos, motivo pelo qual é recomendado o seu consumo regular, numa alimentação saudável e equilibrada. Tendo em consideração a importância da cultura dos frutos secos, a Sociedade de Ciências Agrárias de Portugal (SCAP) e o Centro Nacional de Competências dos Frutos Secos (CNCFS) organizaram o II Simpósio Nacional de Frutos Secos, que decorreu nos dias 10, 11 e 12, no Auditório Municipal de Mirandela. O programa contou com cinco sessões: Economia e mercados; Material vegetal e sistemas de produção; Técnicas culturais (rega e fertilização); Proteção fitossanitária; Pós-colheita, processamento e novos produtos. Neste fascículo são apresentados doze trabalhos científicos, uma amostra da elevada qualidade científica do II Simpósio Nacional de Frutos Secos e da investigação que se realiza em Portugal, na área dos frutos secos.
description: Revista de Ciências Agrárias, Vol. 43 N.º nsp2 (2020): Revista de Ciências Agrárias, vol. 43, nº. especial 2
Spatial ALD Al2O3 Film Integrated in Low-Cost, High-Performance Bifacial Solar Cells
Creators: name: Vermont, P.
name: Granneman, E.H.A.
name: Ernst, M.
name: Cesar, I.
name: Mewe, A.A.
name: Weeber, A.W.
Publisher: name: WIP
Year: 2012
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 1757-1760
description: ALD Al2O3 films have been integrated in an open rear-side p-PASHA (Passivated All Sides and Hpattern)
type solar cell. The manufacturing of this cell is cost-effective as it uses a single dielectric Al2O3 layer (i.e. no
SiNx capping layer), partial (30-50%) coverage of metal paste on the rear side, no laser opening or laser firing
required, and co-firing of the Ag and Al pastes. The spatial ALD deposition is carried out in the Levitrack system
which is characterized by a high throughput (up to 3600 wafers/hr) and strict separation of H2O and TMA compounds
in the system. The Al2O3 film was thin enough to allow effective firing through, while avoiding the formation of
defects (blisters) upon high-temperature firing.
On p-type Cz and multi-crystalline material, the p-PASHA cell was superior to the reference full-BSF cell in JscxVoc
by 1% and 2.5% respectively. Local IQE mapping indicates that the Al2O3 passivation performance is maintained
after firing.
DC3: A learning method for optimization with hard constraints
Creators: name: Donti, Priya L.
name: Rolnick, David
name: Kolter, J. Zico
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Optimization and Control (math.OC)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Large optimization problems with hard constraints arise in many settings, yet classical solvers are often prohibitively slow, motivating the use of deep networks as cheap "approximate solvers." Unfortunately, naive deep learning approaches typically cannot enforce the hard constraints of such problems, leading to infeasible solutions. In this work, we present Deep Constraint Completion and Correction (DC3), an algorithm to address this challenge. Specifically, this method enforces feasibility via a differentiable procedure, which implicitly completes partial solutions to satisfy equality constraints and unrolls gradient-based corrections to satisfy inequality constraints. We demonstrate the effectiveness of DC3 in both synthetic optimization tasks and the real-world setting of AC optimal power flow, where hard constraints encode the physics of the electrical grid. In both cases, DC3 achieves near-optimal objective values while preserving feasibility.
description: In ICLR 2021. Code available at https://github.com/locuslab/DC3
An expression for stationary distribution in nonequilibrium steady state
Creators: name: Komatsu, Teruhisa S.
name: Nakagawa, Naoko
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the nonequilibrium steady state realized in a general stochastic system attached to multiple heat baths and/or driven by an external force. Starting from the detailed fluctuation theorem we derive concise and suggestive expressions for the corresponding stationary distribution which are correct up to the second order in thermodynamic forces. The probability of a microstate $η$ is proportional to $\exp[Φ(η)]$ where $Φ(η)=-\sum_kβ_k\mathcal{E}_k(η)$ is the excess entropy change. Here $\mathcal{E}_k(η)$ is the difference between two kinds of conditioned path ensemble averages of excess heat transfer from the $k$-th heat bath whose inverse temperature is $β_k$. Our expression may be verified experimentally in nonequilibrium states realized, for example, in mesoscopic systems.
description: 4 pages, 2 figures
Self-consistent simulations of Nuclear Cluster formation through Globular Cluster orbital decay and merging
Creators: name: Capuzzo-Dolcetta, R.
name: Miocchi, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present results of fully self-consistent N-body simulations of the motion of four globular clusters moving in the inner region of their parent galaxy. With regard to previous simplified simulations, we confirm merging and formation of an almost steady nuclear cluster, in a slightly shorter time. The projected surface density profile shows strong similarity to that of resolved galactic nuclei. This similarity reflects also in the velocity dispersion profile which exhibits a central colder component as observed in many nucleated galaxies.
description: 5 pages, 6 figures, submitted to MNRAS letters
Quantifying Low-Light Behaviour of Photovoltaic Modules by Identifying Their Irradiance-Dependent Efficiency from Data Sheets
Creators: name: Herteleer, B.
name: Cappelle, J.
name: Driesen, J.
Publisher: name: WIP
Year: 2012
Subjects: Components for PV Systems
Standardisation

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 3714-3719
description: A relative normalized irradiance-dependent efficiency of photovoltaic modules is recommended as an objective
means of quantifying their behaviour under variable irradiance conditions. It allows users to decouple the irradiancedependent
behaviour of photovoltaic modules from their temperature dependence. This criterion is shown to have
a broad applicability in diagnostics by manufacturers and users of photovoltaic module’s data sheets. A selection
of calculated values of the relative normalized irradiance-dependent efficiency obtained from a survey of 121 data
sheets by 30 leading manufacturers are graphically presented. These figures indicate that there are quantifiable
irradiance-dependent differences between photovoltaic module technologies and manufacturers.
An illustration of comparisons based on the irradiance-dependent behaviour between different technologies and
different modules is given. A recommendation is made for the following edition of the EN 50380 standard
for photovoltaic module data sheets, to require that the measured power-irradiance, power-temperature matrix
according to the new IEC 61853-1 standard be incorporated.