cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
SharesSkew: An Algorithm to Handle Skew for Joins in MapReduce
Creators: name: Afrati, Foto
name: Stasinopoulos, Nikos
name: Ullman, Jeffrey D.
name: Vassilakopoulos, Angelos
Publisher: name: arXiv
Year: 2015
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: In this paper, we investigate the problem of computing a multiway join in one round of MapReduce when the data may be skewed. We optimize on communication cost, i.e., the amount of data that is transferred from the mappers to the reducers. We identify join attributes values that appear very frequently, Heavy Hitters (HH). We distribute HH valued records to reducers avoiding skew by using an adaptation of the Shares~\cite{AfUl} algorithm to achieve minimum communication cost. Our algorithm is implemented for experimentation and is offered as open source software. Furthermore, we investigate a class of multiway joins for which a simpler variant of the algorithm can handle skew. We offer closed forms for computing the parameters of the algorithm for chain and symmetric joins.
Micropteropus Matschie 1899
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Micropteropus

description: Micropteropus Matschie, 1899. Megachiroptera Berlin Mus., p. 36, 57. TYPE SPECIES: Epomophorus pusillus Peters, 1867. COMMENTS: Revised by Bergmans (1989), who transferred grandis from this genus to Epomophorus.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 143, DOI: 10.5281/zenodo.7353060
description: {"references": ["Bergmans, W. 1989. Taxonomy and biogeography of African fruit bats (Mammalia: Megachiroptera). 2. The genera Micropteropus Matschie, 1899, Epomops Gray, 1870, Hypsignathus H. Allen, 1861, Nanonycteris Matschie, 1899, and Plerotes Andersen, 1910. Beaufortia, 39 (4): 89 - 153."]}
Effect of Ag Nanoparticles Embedded AZO/ZnO Multilayers as Front TCO on the QE Spectra of the a-Si/a-Si Double Tandem Solar Cells
Creators: name: Mandal, A.
name: Kole, A.
name: Ghosh, T.
name: Basak, D.
name: Chaudhuri, P.
Publisher: name: WIP
Year: 2015
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
New Materials and Concepts for cells

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 210-215
description: A series of a-Si/a-Si double tandem solar cells (PSCs) have been fabricated over the Al:ZnO (~210 nm)
/Ag nano particles (~50 nm lateral dimension)/ZnO (tc nm) multilayers working as front TCOs with tc varying from
~5 nm to ~50 nm and compared with a reference double tandem solar cell (RSC) deposited on an AZO substrate.
Measurement of the external quantum efficiency (EQE) of the front cell in each PSC shows a large enhancement in
the wavelength range (L): 550 nm to 725 nm together with a poor EQE at shorter wavelength range (S) < 550 nm
in comparison to the front cell EQE of the RSC. Theoretical modeling of the solar cell structure based on finite
difference time domain method shows surface plasmon resonance of Ag capped with ZnO occurring around 550 nm.
A PL emission band above 530 nm associated with the oxygen related defect in ZnO has been correlated with the
enhanced EQE for the range L. The absorption by the Ag nano particles and the recombination at the front TCO/a-
Si:H interface degrades the EQE over S range. Existence of an optimum value of ZnO thickness has been proposed
to improve the performance of the solar cells.
Morphological Transitions in Nanoscale Patterns Produced by Concurrent Ion Sputtering and Impurity Co-deposition
Creators: name: Bradley, R. Mark
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We modify the theory of nanoscale patterns produced by ion bombardment with concurrent impurity deposition to take into account the effect that the near-surface impurities have on the collision cascades. As the impurity concentration is increased, the resulting theory successively yields a flat surface, a rippled surface with its wavevector along the projected direction of ion incidence, and a rippled surface with its wavevector rotated by 90 degrees. Exactly the same morphological transitions were observed in recent experiments in which silicon was bombarded with an argon ion beam and gold was co-deposited [B.~Moon et al. arXiv:1601.02534 (2016)].
Near-locality of exchange and correlation density functionals for 1- and 2-electron systems
Creators: name: Sun, Jianwei
name: Perdew, John P.
name: Yang, Zenghui
name: Peng, Haowei
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The uniform electron gas and the hydrogen atom play fundamental roles in condensed matter physics and quantum chemistry. The former has an infinite number of electrons uniformly distributed over the neutralizing positively-charged background, and the latter only one electron bound to the proton. The uniform electron gas was used to derive the local spin density approximation (LSDA) to the exchange-correlation functional that undergirds the development of the Kohn-Sham density functional theory. We show here that the ground-state exchange-correlation energies of the hydrogen atom and many other 1- and 2-electron systems are modeled surprisingly well by a different local spin density approximation (LSDA0). Our LSDA0 is constructed to satisfy exact constraints, but agrees surprisingly well with the exact results for a uniform two-electron density in a finite, curved three-dimensional space. We also apply LSDA0 to excited or noded 1-electron densities. Furthermore, we show that the locality of an orbital can be measured by the ratio between the exact exchange energy and its optimal lower bound.
Effect of external tension on the wetting of an elastic sheet
Creators: name: Kozyreff, Gregory
name: Davidovitch, Benny
name: Prasath, S. Ganga
name: Palumbo, Guillaume
name: Brau, Fabian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Recent studies of elasto-capillary phenomena have triggered interest in a basic variant of the classical Young-Laplace-Dupré (YLD) problem: The capillary interaction between a liquid drop and a thin solid sheet of low bending stiffness. Here, we consider a two-dimensional model where the sheet is subjected to an external tensile load and the drop is characterized by a well-defined Young's contact angle $θ_Y$. Using a combination of numerical, variational, and asymptotic techniques, we discuss wetting as a function of the applied tension. We find that, for wettable surfaces with $0<θ_Y<π/2$, complete wetting is possible below a critical applied tension thanks to the deformation of the sheet in contrast with rigid substrates requiring $θ_Y=0$. Conversely, for very large applied tensions, the sheet becomes flat and the classical YLD situation of partial wetting is recovered. At intermediate tensions, a vesicle forms in the sheet, which encloses most of the fluid and we provide an accurate asymptotic description of this wetting state in the limit of small bending stiffness. We show that bending stiffness, however small, affects the entire shape of the vesicle. Rich bifurcation diagrams involving partial wetting and ``vesicle'' solution are found. For moderately small bending stiffnesses, partial wetting can coexist both with the vesicle solution and complete wetting. Finally, we identify a tension-dependent bendo-capillary length, $λ_\text{BC}$, and find that the shape of the drop is determined by the ratio $A/λ_\text{BC}^2$, where $A$ is the area of the drop.
description: 19 pages, 11 figures
Micropteropus intermedius Hayman 1963
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Micropteropus
Micropteropus intermedius

description: Micropteropus intermedius Hayman, 1963. Pubi. Cult. Comp. Diamantes Angola, 66:100. TYPE LOCALITY: Angola, Lunda, Dundo. DISTRIBUTION: N Angola, SE Zaire.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 143, DOI: 10.5281/zenodo.7353060
Experience on Caustic-Fusion Ilmenite to Produce TiO2 for DSSC
Creators: name: Mostavan, A.
name: Mostavan, A.
name: Soepriyanto, S.
Publisher: name: WIP
Year: 2015
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
New Materials and Concepts for cells

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 223-225
description: Facing the need 35 GW electricity, Indonesia must use photovoltaic energy. It is interesting to contribute on
one of solar energy such as Dye-Sensitised Solar Cell. TIO2 is a semiconductor that is needed for DSSC. Realisation of TiO2
in Indonesia, increasing local content. TiO2 is commonly produced from ilmenite mineral with sulfuric and chlorination
process. Alternative to both processes, caustic-fusion method is developed with the addition of alkali compounds that can
reduce the consumption of acid when leaching.
A series of caustic-fusion experiments to synthesize TiO2 from ilmenite concentrate. First stage, is a process that uses NaOH
to make intermediate product, then leaching process using water and sulphate acid to obtain a solution of TiOSO4 and
Fe2(SO4)3. Second stage, a hydrolysis for producing a gel of TiO(OH)2 using NH4OH to increase the pH. It is continued, by
processing TiO(OH)2 in calcination to make TiO2.
TiO2 from the hydrolysis process with pH < 2 has the highest anatase phase with small quantity impurities. Product has
similar morphology with commercially produced TiO2. Both are spherical shaped, homogeny, and agglomerated. Further
recent study on energy band gap on TiO2 is also discussed.
The success work on DSSC in Indonesia will encourage us to collaborate and launch for higher scale solar photovoltaic
realisation.
Coastal bird survey
Creators: name: Graells, Giorgia
name: Gelcich, Stefan
Publisher: name: Zenodo
Year: 2023
Subjects: Coastal urbanization
Public perceptions
Coastal birds
Questionnaries

description: An English version of the coastal bird survey conducted from 2019 to 2020 as part of the PhD thesis titled 'Coastal Urbanization in Chile: Effects on Bird Communities, People's Perceptions, and Their Connection with the Coast,' which will be published in the article titled 'Exploring Perceptions of Marine and Terrestrial Bird Species and the Satisfaction of Their Presence in Coastal Urban Environments
INTEGRAL contributions to magnetars and multimessenger astrophysics
Creators: name: Mereghetti, Sandro
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The INTEGRAL satellite, in orbit since October 2002, has significantly contributed to the study of magnetars and, thanks to its unique capabilities for the study of transient gamma-ray phenomena, it is now playing an important role in multimessenger astrophysics. The most recent results include the discovery of a peculiar burst from SGR J1935+2154, which gave the first observational evidence for the connection between magnetars and fast radio bursts, and extensive searches for bursting activity in peculiar sources, such as the repeating FRB 20200120E in M81 and the ultra-long period magnetar candidate GLEAMX J162759.5--523504.3.
description: 2 figures, to be published in proceedings of IAU Symp. 363
Controlling Kondo-like Scattering at the SrTiO3-based Interfaces
Creators: name: Han, K.
name: Palina, N.
name: Zeng, S. W.
name: Huang, Z.
name: Li, C. J.
name: Zhou, W. X.
name: Wan, D-Y.
name: Zhang, L. C.
name: Chi, X.
name: Guo, R.
name: Chen, J. S.
name: Venkatesan, T.
name: Rusydi, A.
name: Ariando
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The observation of magnetic interaction at the interface between nonmagnetic oxides has attracted much attention in recent years. In this report, we show that the Kondo-like scattering at the SrTiO3-based conducting interface is enhanced by increasing the lattice mismatch and growth oxygen pressure PO2. For the 26-unit-cell LaAlO3/SrTiO3 (LAO/STO) interface with lattice mismatch being 3.0%, the Kondo-like scattering is observed when PO2 is beyond 1 mTorr. By contrast, when the lattice mismatch is reduced to 1.0% at the (La0.3Sr0.7)(Al0.65Ta0.35)O3/SrTiO3 (LSAT/STO) interface, the metallic state is always preserved up to PO2 of 100 mTorr. The data from Hall measurement and X-ray absorption near edge structure (XANES) spectroscopy reveal that the larger amount of localized Ti3+ ions are formed at the LAO/STO interface compared to LSAT/STO. Those localized Ti3+ ions with unpaired electrons can be spin-polarized to scatter mobile electrons, responsible for the Kondo-like scattering observed at the LAO/STO interface.
description: 25 pages, 5 figure
Stress Measurements in Interconnected Solar Cells with Raman Spectroscopy
Creators: name: Mühleisen, W.
name: Schicker, J.
name: Neumaier, L.
name: Hirschl, C.
name: Vollert, N.
name: Seufzer, S.
name: Battistutti, R.
name: Pedevilla, M.
name: Scheurer, J.
name: Schwark, M.
name: Fischer, T.
Publisher: name: WIP
Year: 2015
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
New Materials and Concepts for Modules

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 160-163
description: Solar cells are composites of several materials. Due to this fact, the materials will determine the
internal stresses of the cell. This paper considers one aspect of solar cell construction: the addition of conduction
ribbons to the silicon surface of the cell. We use Raman spectroscopy to measure the stresses present in the silicon
substrate, before and after the ribbons have been applied. We also consider comparing two methods of application:
traditional soldering and a novel gluing method. Both methods significantly increased the stresses present,
remarkably, by similar amounts. We conclude that the major source of stress is the ribbon itself; the type of adhesion
method made little or no difference when measured with Raman spectroscopy.
Prevention and control of Zika fever as a mosquito-borne and sexually transmitted disease
Creators: name: Gao, Daozhou
name: Lou, Yijun
name: He, Daihai
name: Porco, Travis C.
name: Kuang, Yang
name: Chowell, Gerardo
name: Ruan, Shigui
Publisher: name: arXiv
Year: 2016
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: The ongoing Zika virus (ZIKV) epidemic poses a major global public health emergency. It is known that ZIKV is spread by \textit{Aedes} mosquitoes, recent studies show that ZIKV can also be transmitted via sexual contact and cases of sexually transmitted ZIKV have been confirmed in the U.S., France, and Italy. How sexual transmission affects the spread and control of ZIKV infection is not well-understood. We presented a mathematical model to investigate the impact of mosquito-borne and sexual transmission on spread and control of ZIKV and used the model to fit the ZIKV data in Brazil, Colombia, and El Salvador. Based on the estimated parameter values, we calculated the median and confidence interval of the basic reproduction number R0=2.055 (95% CI: 0.523-6.300), in which the distribution of the percentage of contribution by sexual transmission is 3.044 (95% CI: 0.123-45.73). Our study indicates that R0 is most sensitive to the biting rate and mortality rate of mosquitoes while sexual transmission increases the risk of infection and epidemic size and prolongs the outbreak. In order to prevent and control the transmission of ZIKV, it must be treated as not only a mosquito-borne disease but also a sexually transmitted disease.
Effect of topological defects on "nuclear pasta" observables
Creators: name: Schneider, A. S.
name: Berry, D. K.
name: Caplan, M. E.
name: Horowitz, C. J.
name: Lin, Z.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: [Background] The "pasta" phase of nuclear matter may play an important role in the structure and evolution of neutron stars. Recent works suggest nuclear pasta has a high resistivity which could be explained by the presence of long lived topological defects. The defects act as impurities that decrease thermal and electrical conductivity of the pasta. [Purpose] To quantify how topological defects affect transport properties of nuclear pasta and estimate this effect using an impurity parameter $Q_{\text{imp}}$. [Methods] Contrast molecular dynamics simulations of up to 409\,600 nucleons arranged in parallel nuclear pasta slabs (perfect pasta) with simulations of pasta slabs connected by topological defects (impure pasta). From these simulations compare the viscosity and heat conductivity of perfect and impure pasta to obtain an effective impurity parameter $Q_{\text{imp}}$ due to the presence of defects. [Results] Both the viscosity and thermal conductivity calculated for both perfect and impure pasta are anisotropic, peaking along directions perpendicular to the slabs and reaching a minimum close to zero parallel to them. In our 409\,600 nucleon simulation topological defects connecting slabs of pasta reduce both the thermal conductivity and viscosity on average by about 37\%. We estimate an effective impurity parameter due to the defects of order $Q_{\text{imp}}\sim30$. [Conclusions] Topological defects in the pasta phase of nuclear matter have an effect similar to impurities in a crystal lattice. The irregularities introduced by the defects reduce the thermal and electrical conductivities and the viscosity of the system. This effect can be parameterized by a large impurity parameter $Q_{\text{imp}}\sim30$.
description: 9 pages, 5 figures, 3 tables
Micropteropus pusillus
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Micropteropus
Micropteropus pusillus

description: Micropteropus pusillus (Peters, 1867). Monatsb. K. Preuss. Akad. Wiss. Berlin, 1867:870. TYPE LOCALITY: Nigeria, Yoruba (see Bergmans, 1989). DISTRIBUTION: Gambia to Ethiopia, south to Angola, Zambia, Burundi, and Tanzania.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 143, DOI: 10.5281/zenodo.7353060
description: {"references": ["Bergmans, W. 1989. Taxonomy and biogeography of African fruit bats (Mammalia: Megachiroptera). 2. The genera Micropteropus Matschie, 1899, Epomops Gray, 1870, Hypsignathus H. Allen, 1861, Nanonycteris Matschie, 1899, and Plerotes Andersen, 1910. Beaufortia, 39 (4): 89 - 153."]}
Eutectic Sn-Bi Plating on the Metal Grids of Silicon Solar Cells Enabling New Methods of Cell Interconnection
Creators: name: Hsiao, P.-C.
name: Lennon, A.
Publisher: name: WIP
Year: 2015
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
New Materials and Concepts for Modules

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 169-172
description: Deposition of Sn-Bi alloy on the n-type plated Ni/Cu grids of laser-doped selective emitter cells and on
the p-type plated Ni/Cu grids of laser-doped bifacial cells is presented. A eutectic alloy composition was achieved by
controlling the plating current density using a single plating electrolyte, however the Sn-Bi composition of the alloy
was not uniform though the thickness of the deposit. It is shown that the plated alloy can be reflowed on the cell to
increase uniformity and enhance bonding to interconnect wire during lamination enabling a low temperature
interconnection process which effectively eliminates the solder-induced stresses on the solar cell.
Revisiting Embodiment for Brain-Computer Interfaces
Creators: name: Serim, Barış
name: Spapé, Michiel
name: Jacucci, Giulio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Researchers increasingly explore deploying brain-computer interfaces (BCIs) for able-bodied users, with the motivation of accessing mental states more directly than allowed by existing body-mediated interaction. This motivation seems to contradict the long-standing HCI emphasis on embodiment, namely the general claim that the body is crucial for cognition. This paper addresses this apparent contradiction through a review of insights from embodied cognition and interaction. We first critically examine the recent interest in BCIs and identify the extent cognition in the brain is integrated with the wider body as a central concern for research. We then define the implications of an integrated view of cognition for interface design and evaluation. A counterintuitive conclusion we draw is that embodiment per se should not imply a preference for body movements over brain signals. Yet it can nevertheless guide research by 1) providing body-grounded explanations for BCI performance, 2) proposing evaluation considerations that are neglected in modular views of cognition, and 3) through the direct transfer of its design insights to BCIs. We finally reflect on HCI's understanding of embodiment and identify the neural dimension of embodiment as hitherto overlooked.
description: Proceedings of the 30th ACM International Conference on Multimedia (2022)
A Novel PV Module Assembly for Back Contact Solar Cells
Creators: name: Su, T.-Y.
name: Chang, P.-K
name: Tung, K.-W.
name: Huang, M.-Y.
Publisher: name: WIP
Year: 2015
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
New Materials and Concepts for Modules

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 157-159
description: In this paper, AUO focuses on high performances of the back contact modules, as a function of different
interconnection materials, lamination temperature and lamination time. The n-type interdigitated back-contacted
(IBC) solar cells are used in the photovoltaic modules. The prepared PV modules have a front covered
material/ethylene vinyl acetate (EVA)/IBC cells/EVA/conductive back sheet foil structure. AUO develops this
type of module by using conductive adhesives for the electrical interconnection of the back of the cells with the
electric conductive back sheet foil. The interconnection with different materials, including conductive tape, metal
ingot and silver paste, has been applied in back contact cells. During the lamination process, temperatures (150 and
160 °C) and times (8 and 10 minutes) are varied experimentally in order to obtain a high module power.
Effects of dark energy and flat rotation curve on the gravitational time delay of particle with non-zero mass
Creators: name: Sarkar, Tamal
name: Ghosh, Shubhrangshu
name: Bhadra, Arunava
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The effects of several dark energy models on gravitational time delay of particles with non-zero mass are investigated and analytical expressions for the same are obtained at the first order accuracy. Also the expression for gravitational time delay under the influence of conformal gravity potential that well describes the flat rotation curve of spiral galaxies is derived. The findings suggest that i) the conformal gravity description of dark matter reduces the net time delay in contrast to the effect of normal dark matter and therefore in principle the models can be discriminated using gravitational time delay observations and ii)the effect of dark energy/flat rotation curve may be revealed from high precision measurements of gravitational time delay of particles involving megaparsec and beyond distance-scale.
description: 10 pages
Myonycteris Matschie 1899
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Myonycteris

description: Myonycteris Matschie, 1899. Megachiroptera Berlin Mus., p. 61, 63. TYPE SPECIES: Cynonycteris torquata Dobson, 1878. COMMENTS: Revised by Bergmans (1976).
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 143, DOI: 10.5281/zenodo.7353060
description: {"references": ["Bergmans, W. 1976. A revision of the African genus Myonycteris Matschie, 1899 (Mammalia, Megachiroptera). Beaufortia, 24 (317): 189 - 216."]}
Cross-Domain Visual Matching via Generalized Similarity Measure and Feature Learning
Creators: name: Lin, Liang
name: Wang, Guangrun
name: Zuo, Wangmeng
name: Feng, Xiangchu
name: Zhang, Lei
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Cross-domain visual data matching is one of the fundamental problems in many real-world vision tasks, e.g., matching persons across ID photos and surveillance videos. Conventional approaches to this problem usually involves two steps: i) projecting samples from different domains into a common space, and ii) computing (dis-)similarity in this space based on a certain distance. In this paper, we present a novel pairwise similarity measure that advances existing models by i) expanding traditional linear projections into affine transformations and ii) fusing affine Mahalanobis distance and Cosine similarity by a data-driven combination. Moreover, we unify our similarity measure with feature representation learning via deep convolutional neural networks. Specifically, we incorporate the similarity measure matrix into the deep architecture, enabling an end-to-end way of model optimization. We extensively evaluate our generalized similarity model in several challenging cross-domain matching tasks: person re-identification under different views and face verification over different modalities (i.e., faces from still images and videos, older and younger faces, and sketch and photo portraits). The experimental results demonstrate superior performance of our model over other state-of-the-art methods.
description: To appear in IEEE Transactions on Pattern Analysis and Machine Intelligence (T-PAMI), 2016
Electronic and Optical Properties of Nickel Alloyed Iron Disulphide Pyrite for Photovoltaic Application
Creators: name: Ouarab, N.
name: Boumaour, M.
name: Bahfir, A.
name: Larabi, A.
Publisher: name: WIP
Year: 2015
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
Fundamental Material Studies

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 131-135
description: Pyrite FeS2 is an earth-abundant, non-toxic semiconductor that can produce large photocurrents in solar
cells, owing especially to its high absorption coefficient (~≥ 5 *105 cm-1 in visible range). However and to get better
performance, FeS2 energy band gap (~ 0.95 eV) should be barely enlarged to values over 1.15 eV by Ni Alloyed FeS2. In
a first step and within the framework of Perdew-Burke-Ernzerhof-GGA/LDA approximations, the modified Becke-
Johnson potential was used to calculate the band gap of n-type pyrite thin film and gives a value of 0.96 eV, close to
0.95eV experimental value. For electron affinity calculation, B3LYP method was implemented in addition to mBJ
approach to run concomitantly the double auto coherent calculation. In order to determine band gap and electron affinity
of the Ni alloyed FeS2, super-cells of Fe1-xNixS2 with different contents in Ni were used. We observe a reduction of the
band gap for x ≥ 0.03, but its increase in the case x < 0.03. As for optical properties, we discuss details about absorption
coefficient spectra and refraction index variations; calculations were performed from momentum matrix elements and
interpreted via the projected density of states.
Prevalence postpartum depression in sub-Saharan Africa: a systematic review with meta-analysis
Creators: name: Nweke, Martins
name: Maryjane, Ukwuoma
name: Adiuku-Brown, Ada C
Publisher: name: figshare
Year: 2022
Subjects: subject: 110999 Neurosciences not elsewhere classified
subject: FOS: Clinical medicine
subject: 111712 Health Promotion
subject: FOS: Health sciences
subject: 111005 Mental Health Nursing
subject: 110321 Rehabilitation and Therapy (excl. Physiotherapy)

description: The paper provide the latest update on burden of postpartum depression in sub-Saharan Africa and it's currently under undergoing peer review in the South African Journal of Science.
Light Trapping for Silicon Photovoltaic Cells Designed for Solar-Pumped Laser Illumination
Creators: name: Takeda, Y.
name: Ito, T.
Publisher: name: WIP
Year: 2015
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
New Materials and Concepts for cells

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 185-189
description: We have designed a silicon photovoltaic cell that is combined with a solar-pumped laser (SPL)
emitting at 1064 nm for highly efficient photovoltaics. We have proposed a new concept of light trapping using a
bandpass filter on the front surface and a diffuse reflector on the back surface, utilizing the unique illumination
condition of monochromatic and normal incidence. This allows us to use a silicon wafer as thin as 20-50 μm to solve
the issues of series resistance and Auger recombination under intense illumination like SPLs. We have optimized the
detailed structure by a ray-trace simulation with a Monte-Carlo method and experimental evaluations, and
demonstrated a significant light-trapping effect. The prototype sample for optical measurements using a 45 μm-thick
silicon wafer equipped with a 15-layered TiO2/SiO2 bandpass filter and a diffuse reflector consisting of a chemically
etched rough surface covered with a silver layer exhibited an absorbance in the silicon wafer excluding the absorption
loss in the silver layer being 0.86 for 1064 nm normal incidence, which was significantly higher than the
Yablonovitch limit (0.67) supposing the ideal front anti-reflection coating and back diffuse reflector.
Constructing coarse-scale bifurcation diagrams from spatio-temporal observations of microscopic simulations: A parsimonious machine learning approach
Creators: name: Galaris, Evangelos
name: Fabiani, Gianluca
name: Gallos, Ioannis
name: Kevrekidis, Ioannis
name: Siettos, Constantinos
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: Machine Learning (cs.LG)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We address a three-tier data-driven approach to solve the inverse problem in complex systems modelling from spatio-temporal data produced by microscopic simulators using machine learning. In the first step, we exploit manifold learning and in particular parsimonious Diffusion Maps using leave-one-out cross-validation (LOOCV) to both identify the intrinsic dimension of the manifold where the emergent dynamics evolve and for feature selection over the parametric space. In the second step, based on the selected features, we learn the right-hand-side of the effective partial differential equations (PDEs) using two machine learning schemes, namely shallow Feedforward Neural Networks (FNNs) with two hidden layers and single-layer Random Projection Networks(RPNNs) which basis functions are constructed using an appropriate random sampling approach. Finally, based on the learned black-box PDE model, we construct the corresponding bifurcation diagram, thus exploiting the numerical bifurcation analysis toolkit. For our illustrations, we implemented the proposed method to construct the one-parameter bifurcation diagram of the 1D FitzHugh-Nagumo PDEs from data generated by $D1Q3$ Lattice Boltzmann simulations. The proposed method was quite effective in terms of numerical accuracy regarding the construction of the coarse-scale bifurcation diagram. Furthermore, the proposed RPNN scheme was $\sim$ 20 to 30 times less costly regarding the training phase than the traditional shallow FNNs, thus arising as a promising alternative to deep learning for solving the inverse problem for high-dimensional PDEs.
Integrated Switch for Substring Reconfiguration to Optimize Module Power under Partial Shading
Creators: name: Bauwens, P.
name: Doutreloigne, J.
Publisher: name: WIP
Year: 2015
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
New Materials and Concepts for Modules

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 142-145
description: The output power of a PV module can drop significantly if there is a current mismatch between the
series-connected individual cells. This current mismatch can arise due to differences in temperatures of the cells or
simply because of partial shading of the PV panel. The most common solution to this problem is by bypassing those
limiting cells (in practice, the entire substring containing them is bypassed) and in doing so, ensuring a higher output
power. The problem with this approach is that there might still be a lot of power available in those bypassed cells,
both in those who are actually shaded (when it is not a 100% shade) and in those still fully illuminated, but merely
belonging to that bypassed substring. A reconfigurable module topology might be more efficient. In such a topology
the connections between the substrings can be rearranged during operation in order to maximize the module power
output. For this topology to be effective, a network of very low-ohmic (not exceeding a few m) switches are
needed, capable of communication from anywhere in the panel. This paper describes the design of such a
reconfiguration switch.
Absorption variability as a probe of the multiphase interstellar media surrounding active galaxies
Creators: name: Macquart, Jean-Pierre
name: Tingay, Steven
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We examine a model for the variable free-free and neutral hydrogen absorption inferred towards the cores of some compact radio galaxies in which a spatially fluctuating medium drifts in front of the source. We relate the absorption-induced intensity fluctuations to the statistics of the underlying opacity fluctuations. We investigate models in which the absorbing medium consists of either discrete clouds or a power-law spectrum of opacity fluctuations. We examine the variability characteristics of a medium comprised of Gaussian-shaped clouds in which the neutral and ionized matter are co-located, and in which the clouds comprise spherical constant-density neutral cores enveloped by ionized sheaths. The cross-power spectrum indicates the spatial relationship between neutral and ionized matter, and distinguishes the two models, with power in the Gaussian model declining as a featureless power-law, but that in the ionized sheath model oscillating between positive and negative values. We show how comparison of the HI and free-free power spectra reveals information on the ionization and neutral fractions of the medium. The background source acts as a low-pass filter of the underlying opacity power spectrum, which limits temporal fluctuations to frequencies $ω< \dotθ_v / θ_{\rm src}$, where $\dotθ_v$ is the angular drift speed of the matter in front of the source, and it quenches the observability of opacity structures on scales smaller than the source size $θ_{\rm src}$. For drift speeds of $\sim 10^3\,$km s$^{-1}$ and source brightness temperatures $\sim 10^{12}\,$K, this limitation confines temporal opacity fluctuations to timescales of order several months to decades.
description: 16 pages, MNRAS accepted
Myonycteris brachycephala
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Myonycteris
Myonycteris brachycephala

description: Myonycteris brachycephala (Bocage, 1889). J. Sei. Math. Phys. Nat. Lisboa, ser. 2, 1:198. TYPE LOCALITY: Sâo Tomé and Principe, Sâo Tomé Isl. DISTRIBUTION: Sâo Tomé Isl (Gulf of Guinea). COMMENTS: Subgenus Phrygetis.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 143, DOI: 10.5281/zenodo.7353060
Quantum Error Correction with Quantum Autoencoders
Creators: name: Locher, David F.
name: Cardarelli, Lorenzo
name: Müller, Markus
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Active quantum error correction is a central ingredient to achieve robust quantum processors. In this paper we investigate the potential of quantum machine learning for quantum error correction in a quantum memory. Specifically, we demonstrate how quantum neural networks, in the form of quantum autoencoders, can be trained to learn optimal strategies for active detection and correction of errors, including spatially correlated computational errors as well as qubit losses. We highlight that the denoising capabilities of quantum autoencoders are not limited to the protection of specific states but extend to the entire logical codespace. We also show that quantum neural networks can be used to discover new logical encodings that are optimally adapted to the underlying noise. Moreover, we find that, even in the presence of moderate noise in the quantum autoencoders themselves, they may still be successfully used to perform beneficial quantum error correction and thereby extend the lifetime of a logical qubit.
description: 12 pages, 12 figures + appendix
Lisensiering av forskningsdata
Creators: name: UiT The Arctic University Of Norway
Publisher: name: Zenodo
Year: 2022
Subjects: RDM
forskningsdatahåndtering
FAIR data
forskningsdata

description: Kursmateriale for webinaret “Lisensiering av forskningsdata”, del av en webinarserie om forskningsdatahåndtering ved UiT Norges Arktiske Universitet. For mer informasjon, besøk: site.uit.no/rdmtraining
Novel Solar Cell Interconnection Scheme Embedded in Encapsulant
Creators: name: Sánchez-Friera, P.
name: Puerto, B.
name: Alvarez, D.
name: Fidalgo, I.
name: Merino Martínez, R.
Publisher: name: WIP
Year: 2015
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
New Materials and Concepts for Modules

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 149-152
description: The aim of this work is the development of an innovative module encapsulation technology based on a
novel encapsulation foil with intrinsic conductive structures. The system is able to replace traditional interconnection
schemes based on ribbon soldering, enabling a highly efficiency module assembly process and therefore increasing
productivity and potentially reducing production costs. Conductive encapsulant foils are produced by combining
advanced conductive inks with high-throughput roll-to-roll printed electronics technologies for the production of the
conductive structures. Special focus is placed on developing printing and ink sintering processes for the intrinsic
conductors, which i) maintain the properties of the encapsulant material, ii) meet stringent specifications regarding
flexibility and mechanical strength of the conductive network and iii) reach high electrical serial and contact
resistance after a typical lamination cycle.
A Comprehensive Comparative Test of Seven Widely-Used Spectral Synthesis Models Against Multi-Band Photometry of Young Massive Star Clusters
Creators: name: Wofford, A.
name: Charlot, S.
name: Bruzual, G.
name: Eldridge, J. J.
name: Calzetti, D.
name: Adamo, A.
name: Cignoni, M.
name: de Mink, S. E.
name: Gouliermis, D. A.
name: Grasha, K.
name: Grebel, E. K.
name: Lee, J.
name: Östlin, G.
name: Smith, L. J.
name: Uveda, L.
name: Zackrisson, E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We test the predictions of spectral synthesis models based on seven different massive-star prescriptions against Legacy ExtraGalactic UV Survey (LEGUS) observations of eight young massive clusters in two local galaxies, NGC 1566 and NGC 5253, chosen because predictions of all seven models are available at the published galactic metallicities. The high angular resolution, extensive cluster inventory and full near-ultraviolet to near-infrared photometric coverage make the LEGUS dataset excellent for this study. We account for both stellar and nebular emission in the models and try two different prescriptions for attenuation by dust. From Bayesian fits of model libraries to the observations, we find remarkably low dispersion in the median E(B-V) (~0.03 mag), stellar masses (~10^4 M_\odot) and ages (~1 Myr) derived for individual clusters using different models, although maximum discrepancies in these quantities can reach 0.09 mag and factors of 2.8 and 2.5, respectively. This is for ranges in median properties of 0.05-0.54 mag, 1.8-10x10^4 M_\odot and 1.6-40 Myr spanned by the clusters in our sample. In terms of best fit, the observations are slightly better reproduced by models with interacting binaries and least well reproduced by models with single rotating stars. Our study provides a first quantitative estimate of the accuracies and uncertainties of the most recent spectral synthesis models of young stellar populations, demonstrates the good progress of models in fitting high-quality observations, and highlights the needs for a larger cluster sample and more extensive tests of the model parameter space.
description: Accepted for publication in MNRAS (14 Jan. 2016). 30 pages, 16 figures, 9 tables
Lisensiering av forskningsdata
Creators: name: UiT The Arctic University Of Norway
Publisher: name: Zenodo
Year: 2023
Subjects: RDM
forskningsdatahåndtering
FAIR data
forskningsdata

description: Kursmateriale for webinaret “Lisensiering av forskningsdata”, del av en webinarserie om forskningsdatahåndtering ved UiT Norges Arktiske Universitet. For mer informasjon, besøk: site.uit.no/rdmtraining
Temperature Dependence of the Homo in Rubrene Film Growth
Creators: name: Cheng, C.-P.
name: Hsueh, C.-F.
name: Chan, Y.-W.
name: Lee, C.-W.
name: Fang, S.-W.
name: Pi, T.-W.
Publisher: name: WIP
Year: 2015
Subjects: NEW MATERIALS AND CONCEPTS FOR SOLAR CELLS AND MODULES
Fundamental Material Studies

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 127-130
description: Rubrene (5, 6, 11, 12-tetraphenyltetracene, C42H28), which is an organic hydrocarbon with a tetracene-like
backbone and four phenyl side groups, has been extensively employed in organic photovoltaic cells because of its
excellent electronic properties. This study examined rubrene films produced with varying the source temperature and
vapor flux grown on gold substrates. Synchrotron-radiation photoemission spectroscopy has demonstrated that the
resulting film’s structure and the highest occupied molecular orbital (HOMO) are critically dependent on the source
evaporating condition. The divergence of the films has been characterized by the tetracene-like backbone and found to be
attributed to the different adsorption conformations. At low source temperature, the film with the HOMO of a higher
binding energy is amorphous. When the source temperature reached 115 °C, the film with strong molecular alignment has
formed. The major differences in electronic properties of rubrene films provide multiple research considerations
regarding the application of rubrene to organic photovoltaic cells.
Designing Social Distancing Policies for the COVID-19 Pandemic: A probabilistic model predictive control approach
Creators: name: Armaou, Antonis
name: Katch, Bryce
name: Russo, Lucia
name: Siettos, Constantinos
Publisher: name: arXiv
Year: 2022
Subjects: subject: Dynamical Systems (math.DS)
subject: Numerical Analysis (math.NA)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The effective control of the COVID-19 pandemic is one the most challenging issues of nowadays. The design of optimal control policies is perplexed from a variety of social, political, economical and epidemiological factors. Here, based on epidemiological data reported in recent studies for the Italian region of Lombardy, which experienced one of the largest and most devastating outbreaks in Europe during the first wave of the pandemic, we address a probabilistic model predictive control (PMPC) approach for the modelling and the systematic study of what if scenarios of the social distancing in a retrospective analysis for the first wave of the pandemic in Lombardy. The performance of the proposed PMPC scheme was assessed based on simulations of a compartmental model that was developed to quantify the uncertainty in the level of the asymptomatic cases in the population, and the synergistic effect of social distancing in various activities, and public awareness campaign prompting people to adopt cautious behaviors to reduce the risk of disease transmission. The PMPC scheme takes into account the social mixing effect, i.e. the effect of the various activities in the potential transmission of the disease. The proposed approach demonstrates the utility of a PMPC approach in addressing COVID-19 transmission and implementing public relaxation policies.
Quantum Nucleation of Skyrmions in Magnetic Films by Inhomogeneous Fields
Creators: name: Diaz, Sebastian A.
name: Arovas, Daniel P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recent experiments have reported on controlled nucleation of individual skyrmions in chiral magnets. Here we show that in magnetic ultra-thin films with interfacial Dzyaloshinskii-Moriya interaction, single skyrmions of different radii can be nucleated by creating a local distortion in the magnetic field. In our study, we have considered zero temperature quantum nucleation of a single skyrmion from a ferromagnetic phase. The physical scenario we model is one where a uniform field stabilizes the ferromagnet, and an opposing local magnetic field over a circular spot, generated by the tip of a local probe, drives the skyrmion nucleation. Using spin path integrals and a collective coordinate approximation, the tunneling rate from the ferromagnetic to the single skyrmion state is computed as a function of the tip's magnetic field and the circular spot radius. Suitable parameters for the observation of the quantum nucleation of single skyrmions are identified.
description: 7 pages, 5 figures
Myonycteris relicta Bergmans 1980
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Myonycteris
Myonycteris relicta

description: Myonycteris relicta Bergmans, 1980. Zool. Meded. Rijks. Mus. Nat. Hist. Leiden, 14:126. TYPE LOCALITY: Kenya, Coast Prov., Shimba Hills, Lukore area, Mukanda River. DISTRIBUTION: Shimba Hills, Kenya; Nguru and Usambara Mtns, Tanzania. COMMENTS: Subgenus Myonycteris.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 143, DOI: 10.5281/zenodo.7353060