cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An Easy Way to Diagnose by Some Masks and Thermography Materials in Working PV Modules
Creators: name: Ikeda, K.
name: Kato, K.
Publisher: name: WIP
Year: 2012
Subjects: Components for PV Systems
PV Modules

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 3366-3369
description: Photovoltaic (PV) modules working for power generation often have the unusually heating materials.
We explained for the silicon crystalline PV system in operation how to diagnose by intentionally shading PV cells in
the module and by thermography the heating mechanism of the materials. The black rubber sheets and the translucent
plastic sheets with same size of PV cells were used for the masks to vary the amount of light into PV cells and a
commercial handy thermo camera was used for thermography to observe variations of temperature and heat
distribution of the heating materials. At first, heating materials were observed by naked eyes and by a thermo camera
in working PV system (Observing); Second, in the sub-module including heating materials, a cell without heating
materials were covered with the black rubber sheets (Damming) and the activity of the bypass diode in the submodule
are examined at the same time; Next, the rubber sheet were removed (Flowing); Then, the cell with heating
materials was covered the black rubber sheet (Masking); Finally, the rubber was replaced with the translucent plastic
sheet (Attenuating). Comparing thermographic images in each situation, we detected in cells a whole cell heating by
cell crack with small area, multi-spot heatings along micro cracks and a spot heating at a local area with small shunt
resistance, when the diagnosis was performed on some modules in the Mega Solar Town of AIST (MST-AIST).
Orbital Instabilities in a Triaxial Cusp Potential
Creators: name: Adams, Fred C.
name: Bloch, Anthony M.
name: Butler, Suzanne C.
name: Druce, Jeffrey M.
name: Ketchum, Jacob A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper constructs an analytic form for a triaxial potential that describes the dynamics of a wide variety of astrophysical systems, including the inner portions of dark matter halos, the central regions of galactic bulges, and young embedded star clusters. Specifically, this potential results from a density profile of the form $ρ(m) \propto m^{-1}$, where the radial coordinate is generalized to triaxial form so that $m^2 = x^2/a^2 + y^2/b^2 + z^2/c^2 $. Using the resulting analytic form of the potential, and the corresponding force laws, we construct orbit solutions and show that a robust orbit instability exists in these systems. For orbits initially confined to any of the three principal planes, the motion in the perpendicular direction can be unstable. We discuss the range of parameter space for which these orbits are unstable, find the growth rates and saturation levels of the instability, and develop a set of analytic model equations that elucidate the essential physics of the instability mechanism. This orbit instability has a large number of astrophysical implications and applications, including understanding the formation of dark matter halos, the structure of galactic bulges, the survival of tidal streams, and the early evolution of embedded star clusters.
description: 50 pages, accepted for publication in ApJ
Optimization of Row-Arrangement in PV Systems, Shading Loss Evaluations According to Module Positioning and Connexions
Creators: name: Mermoud, A.
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; 4009-4013
description: We present an analysis of the mutual shading effects in PV power plants in rows arrangement (sheds). We
identify the main parameters involved in the optimization, mainly the plane tilt and shading Limit angle, and their
implication on the plant yield and occupation ratio (or Ground Covering Ratio GCR). We performed a deep analysis of
the shading effects of different components (Beam, Diffuse, Albedo and mismatch Electrical effects) over one whole year
and observe that the Diffuse and Albedo losses are dominating. The beam loss is very small, and the electrical effects are
important essentially with one only string in the width of the rows. This analysis is based on yearly simulations of
PVsyst, in Geneva and Sevilla.
Additional file 1 of Multi-dimensional fragmentomic assay for ultrasensitive early detection of colorectal advanced adenoma and adenocarcinoma
Creators: name: Ma, Xiaoji
name: Chen, Yikuan
name: Tang, Wanxiangfu
name: Bao, Hua
name: Mo, Shaobo
name: Liu, Rui
name: Wu, Shuyu
name: Bao, Hairong
name: Li, Yaqi
name: Zhang, Long
name: Wu, Xue
name: Cai, Sanjun
name: Shao, Yang
name: Liu, Fangqi
name: Peng, Junjie
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Additional file 1: Supplementary methods. Supplementary Results. Supplementary Figures. Figure S1. Evaluation of base model using individual features. Figure S2. Evaluation of models distinguishing advCRA from early-stage CRC or healthy controls. Figure S3. Evaluation of model constructed using raw coverage WGS data. Figure S4. Evaluation of a multi-dimensional model detecting advCRA/early-stage CRC. Figure S5. Evaluation of age and gender matched groups in the test cohort. Figure S6. Evaluation of model using 10-fold cross-validation score of the training cohort. Supplementary Tables. Table S1. Performances evaluation of base models using different features. Table S2. Evaluating performances of model constructed by raw depth data in the test dataset. Table S3. Participant demographics and baseline characteristics. Table S4. Clinical information of the colorectal advanced adenoma (advCRA) and Adenocarcinoma (CRC) patients.
Algorithms to generate saturated random sequential adsorption packings built of rounded polygons
Creators: name: Cieśla, Michał
name: Kubala, Piotr
name: Kozubek, Konrad
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We present the algorithm for generating strictly saturated random sequential adsorption packings built of rounded polygons. It can be used to study various properties of such packings built of a wide variety of different shapes and in modelling monolayers obtained during the irreversible adsorption processes of complex molecules. Here, we apply the algorithm to study the densities of packings built of rounded regular polygons. Contrary to packings built of regular polygons, where packing fraction grows with an increasing number of polygon sides, the packing fraction reaches its maximum for packings built of rounded regular triangles. With a growing number of polygon sides and increasing rounding radius, the packing fractions tend to the limit given by a packing built of disks. However, they are still slightly denser, even for the rounded 25-gon, which is the highest-sided regular polygon studied here.
description: 10 pages, 13 figures, 2 tables
Cestodes of the Brown-banded Bamboo Shark Chiloscyllium punctatum (Elasmobranchii: Hemiscylliidae) from the Gulf of Thailand
Creators: name: Watchariya PURIVIROJKUL
Publisher: name: Walailak University
Year: 2013
Subjects: Cestode, brown-banded bamboo shark, Chiloscyllium punctatum, the Gulf of Thailand

description: 6, 10, Walailak Journal of Science and Technology
YOUNG FOREST MANAGEMENT FOR SENSITIVE BIRD SPECIES IN WESTERN MARYLAND
Creators: name: Taillie, Dylan Maher
Publisher: name: Digital Repository at the University of Maryland
Year: 2020
Subjects: subject: Environmental science
subject: Wildlife management
subject: Forestry
subject: Cerulean warbler
subject: Field management
subject: Forest management
subject: Golden-winged warbler
subject: Modeling
subject: Wood Thrush

description: Golden-winged warbler, cerulean warbler, and wood thrush populations are in decline in the eastern United States. Golden-winged warblers rely on young forests – such as those created using silviculture – for nesting and early life stages; however, the loss of late-successional forest through timber harvest likely degrades habitat for cerulean warblers and wood thrush. To quantify these complexities, I mapped current habitat quality for these three species in Western Maryland using models based on forest metrics. The creation of young forest through silviculture and field succession scenarios was then simulated to project how modeled changes affect predicted habitat quality. Field succession scenarios and silviculture scenarios both improved predicted habitat quality for golden-winged warblers and wood thrush; however, for cerulean warblers, field succession scenarios improved habitat quality while silviculture scenarios degraded habitat quality. This modeling approach will assist managers in using funds to simultaneously improve habitat quality for multiple sensitive species.
MYTHOLOGICAL CONCEPTS ABOUT MOTHER OF GODDESS AND MOTHER OF UMAI
Creators: name: Zaripova, Z.
Publisher: name: Norwegian Journal of Development of the International Science
Year: 2021
Subjects: folklore
Mother Goddess
Umay ana
Khumay Bird
myth

description: In the works of oral folk art of the Karakalpaks, the image of women, especially brave women, having ac-quired requirements for centuries, the inherent in different public strata takes place in the folk heritage that has come to us. Their main sources survived the stages of birth, formation, directly related to mythological thinking of a genetic and typological nature.
Periodic solutions for a class of nonlinear partial differential equations in higher dimension
Creators: name: Gentile, Guido
name: Procesi, Michela
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 35Q55 (Primary), 37K50 (Secondary)

description: We prove the existence of periodic solutions in a class of nonlinear partial differential equations, including the nonlinear Schroedinger equation, the nonlinear wave equation, and the nonlinear beam equation, in higher dimension. Our result covers cases where the bifurcation equation is infinite-dimensional, such as the nonlinear Schroedinger equation with zero mass, for which solutions which at leading order are wave packets are shown to exist.
description: 34 pages
ONOMASTIC TERM OF KUNGRAT DISTRICT OF KARAKALPAKSTAN
Creators: name: Kuttimuratova, I.
name: Mambetkerimov, G.
Publisher: name: Norwegian Journal of Development of the International Science
Year: 2021
Subjects: onomastics
toponyms
hydronyms
Kungrat region

description: The article is devoted to onomastic names in the Kungrat region of Karakalpakstan. An interesting question is the origin of toponyms and hydronyms in onomastics, their formation in connection with the history and char-acter of the local population. Place names are closely related to history and geography. The article describes the origin of toponyms and hydronyms in onomastics, their formation in connection with the history and character of the local population of the Kungrat region.
Sivers function in constituent quark models
Creators: name: Scopetta, S.
name: Courtoy, A.
name: Fratini, F.
name: Vento, V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A formalism to evaluate the Sivers function, developed for calculations in constituent quark models, is applied to the Isgur-Karl model. A non-vanishing Sivers asymmetry, with opposite signs for the u and d flavor, is found; the Burkardt sum rule is fulfilled up to 2 %. Nuclear effects in the extraction of neutron single spin asymmetries in semi-inclusive deep inelastic scattering off 3He are also evaluated. In the kinematics of JLab, it is found that the nuclear effects described by an Impulse Approximation approach are under control.
description: 8 pages, 3 figures, invited talk at the "2nd International Workshop on Transverse Polarization Phenomena in Hard Processes" (Transversity 2008), Ferrara, Italy, May 28-31, 2008
OVERVIEW OF TOPONYMIC NAMES IN KUNGRAT DISTRICT
Creators: name: Kuttimuratova, I.
name: Mambetkerimov, G.
Publisher: name: Norwegian Journal of Development of the International Science
Year: 2021
Subjects: oykonyms
toponyms
hydronyms
nichronyms
onomastics

description: In the article, on the basis of materials, oykonyms, toponyms, hydronyms, nichronyms of the Kungrat region are collected, and their semantic and grammatical structures are analyzed. We can say that the branch of onomastics related to anthroponyms arose earlier than other branches. It has to do with the human world.
Spontaneous symmetry breaking in amnestically induced persistence
Creators: name: da Silva, Marco Antonio Alves
name: Ferreira, A. S.
name: Viswanathan, G. M.
name: Cressoni, J. C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate a recently proposed non-Markovian random walk model characterized by loss of memories of the recent past and amnestically induced persistence. We report numerical and analytical results showing the complete phase diagram, consisting of 4 phases, for this system: (i) classical nonpersistence, (ii) classical persistence (iii) log-periodic nonpersistence and (iv) log-periodic persistence driven by negative feedback. The first two phases possess continuous scale invariance symmetry, however log-periodicity breaks this symmetry. Instead, log-periodic motion satisfies discrete scale invariance symmetry, with complex rather than real fractal dimensions. We find for log-periodic persistence evidence not only of statistical but also of geometric self-similarity.
description: 4 pages, 2 color figs
UNDERFILL SELECTION TO IMPROVE SOLDER JOINT RELIABILITY FOR DOWN HOLE DRILLING APPLICATIONS
Creators: name: Jayanthi, Sriram
Publisher: name: Digital Repository at the University of Maryland
Year: 2020
Subjects: subject: Mechanical engineering
subject: FOS: Mechanical engineering

description: Underfill materials were originally developed to improve the solder joint reliability of the BGA packages under the thermal cycling when they are experiencing stresses due to the CTE mismatches between the board and the component. Although it is stated that the underfills will improve the shock reliability of the solder joints under the harsh environment for automobiles and military applications (-40 to 125oC). It has been found in the thermal cycling conditions the underfills will reduce the life of the solder balls. All the studies that had been performed were mostly below 150oC. There are no certain guidelines for selecting the underfills with the properties of the materials. The main aim of this research is to create a guideline for selecting the underfills for high temperature applications (above 150oC) for different BGA packages. In the first section initial characterization and benchmarking of the underfills that are available in the industry was performed. In the second section, all the selected underfills were subjected to a harsh environment to find the failure modes and mechanisms. With the help of experimentation and FEA that was done, guidelines were created for selecting the underfills for different BGA packages. This will be helpful to oil & gas and military applications.
Automatic Flare Spot Artifact Detection and Removal in Photographs
Creators: name: Vitoria, Patricia
name: Ballester, Coloma
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Flare spot is one type of flare artifact caused by a number of conditions, frequently provoked by one or more high-luminance sources within or close to the camera field of view. When light rays coming from a high-luminance source reach the front element of a camera, it can produce intra-reflections within camera elements that emerge at the film plane forming non-image information or flare on the captured image. Even though preventive mechanisms are used, artifacts can appear. In this paper, we propose a robust computational method to automatically detect and remove flare spot artifacts. Our contribution is threefold: firstly, we propose a characterization which is based on intrinsic properties that a flare spot is likely to satisfy; secondly, we define a new confidence measure able to select flare spots among the candidates; and, finally, a method to accurately determine the flare region is given. Then, the detected artifacts are removed by using exemplar-based inpainting. We show that our algorithm achieve top-tier quantitative and qualitative performance.
description: Journal of Mathematical Imaging and Vision, 2019
Improving the Surveillance and Control of Vector Mosquitoes in Heterogeneous Landscapes
Creators: name: Saunders, Kaitlin
Publisher: name: Digital Repository at the University of Maryland
Year: 2020
Subjects: subject: Environmental science
subject: Ecology
subject: FOS: Biological sciences

description: Mosquitoes are often called the deadliest animals on earth, posing major public health issues in the United States and worldwide. The most common mosquito species in urban areas in the eastern United States are Aedes albopictus and Culex pipiens, which are vectors of numerous diseases including West Nile virus. Surveillance and management of Ae. albopictus and Cx. pipiens is particularly challenging due to the heterogeneity of urban landscapes, which change on relatively small spatial scales because of underlying social factors such as socioeconomic status (SES) and related infrastructure. As a result, mosquito habitat and distribution varies at correspondingly fine scales. The overall goal of my thesis is to assess relationships between SES and its associated environmental variables with Aedes and Culex mosquitoes in urban landscapes. The results of my research provide recommendations for integrated pest management strategies and highlight environmental justice issues related to disease transmission in low income areas.
ATOMIC LAYER DEPOSITION OF NICKEL THIN FILMS FOR SPACECRAFT OPTICAL APPLICATIONS
Creators: name: Ku, Ching-En
Publisher: name: Digital Repository at the University of Maryland
Year: 2020
Subjects: subject: Chemical engineering
subject: FOS: Chemical engineering
subject: Atomic layer deposition
subject: Nickel
subject: Nickel oxide
subject: Ruthenium
subject: thin film

description: Two approaches for Ni Atomic Layer Deposition on glass substrates have been studied for spacecraft optical applications. The first strategy is to first deposit a NiO thin film and then reduce the metal oxide film using noble gas under high temperature. NiCp2 and O3 as the precursors were chosen due to the low-temperature required for deposition and high growth rate. An alternative pathway was to deposit a Ru metallic film as the adsorption layer, using Ru(DMBD)(CO)3 and H2O, then deposit the Ni metallic film on the Ru film using Ni(DAD)2 and tert-butylamine. The reaction mechanisms for both processes were developed. The ideal theoretical growth rates of these ALD processes were calculated as 2.40 Å/cycle for NiO, 2.19 Å/cycle for Ru and 2.04 Å/cycle for Ni metallic film.
Development and Optimization of Hybrid Friction Materials Consisting of Nanoclay and Carbon Nanotubes by using Analytical Hierarchy Process (AHP) and Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) under Fuzzy Atmosphere
Creators: name: Tej SINGH, Amar PATNAIK
Publisher: name: Walailak University
Year: 2013
Subjects: Friction composites, FAHP, FTOPSIS

description: 4, 10, Walailak Journal of Science and Technology
The Discovery of a Persistent Quasi-Periodic Oscillation in the Intermediate Polar TX Col
Creators: name: Mhlahlo, N.
name: Buckley, D. A. H.
name: Dhillon, V. S.
name: Potter, S. B.
name: Warner, B.
name: Woudt, P.
name: Bolt, G.
name: McCormick, J.
name: Rea, R.
name: Sullivan, Denis J.
name: Velhuis, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on the detection of an ~5900 s quasi-periodic variation in the extensive photometry of TX Col spanning 12 years. We discuss five different models to explain this period. We favour a mechanism where the quasi-periodic variation results from the beating of the Keplerian frequency of the `blobs' orbiting in the outer accretion disc with the spin frequency, and from modulated accretion of these `blobs' taking place in a shocked region near the disc/magnetosphere boundary.
description: 9 pages, 6 figures, 3 tables. Accepted by the Monthly Notices of the Royal Astronomical Society
Hybrid Satellite-UAV-Terrestrial Networks for 6G Ubiquitous Coverage: A Maritime Communications Perspective
Creators: name: Wang, Yanmin
name: Feng, Wei
name: Wang, Jue
name: Quek, Tony Q. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In the coming smart ocean era, reliable and efficient communications are crucial for promoting a variety of maritime activities. Current maritime communication networks (MCNs) mainly rely on marine satellites and on-shore base stations (BSs). The former generally provides limited transmission rate, while the latter lacks wide-area coverage capability. Due to these facts, the state-of-the-art MCN falls far behind terrestrial fifth-generation (5G) networks. To fill up the gap in the coming sixth-generation (6G) era, we explore the benefit of deployable BSs for maritime coverage enhancement. Both unmanned aerial vehicles (UAVs) and mobile vessels are used to configure deployable BSs. This leads to a hierarchical satellite-UAV-terrestrial network on the ocean. We address the joint link scheduling and rate adaptation problem for this hybrid network, to minimize the total energy consumption with quality of service (QoS) guarantees. Different from previous studies, we use only the large-scale channel state information (CSI), which is location-dependent and thus can be predicted through the position information of each UAV/vessel based on its specific trajectory/shipping lane. The problem is shown to be an NP-hard mixed integer nonlinear programming problem with a group of hidden non-linear equality constraints. We solve it suboptimally by using Min-Max transformation and iterative problem relaxation, leading to a process-oriented joint link scheduling and rate adaptation scheme. As observed by simulations, the scheme can provide agile on-demand coverage for all users with much reduced system overhead and a polynomial computation complexity. Moreover, it can achieve a prominent performance close to the optimal solution.
The complex light-curve of the afterglow of GRB071010A
Creators: name: Covino, S.
name: D'Avanzo, P.
name: Klotz, A.
name: Perley, D. A.
name: Amati, L.
name: Campana, S.
name: Chincarini, G.
name: Cucchiara, A.
name: D'Elia, V.
name: Guetta, D.
name: Guidorzi, C.
name: Kann, D. A.
name: Yoldaş, A. Küpcü
name: Misra, K.
name: Olofsson, G.
name: Tagliaferri, G.
name: Antonelli, L. A.
name: Berger, E.
name: Bloom, J. S.
name: Böer, M.
name: Clemens, C.
name: D'Alessio, F.
name: Della Valle, M.
name: Alighieri, S. di Serego
name: Filippenko, A. V.
name: Foley, R. J.
name: Fox, D. B.
name: Fugazza, D.
name: Fynbo, J.
name: Gendre, B.
name: Goldoni, P.
name: Greiner, J.
name: Kocevksi, D.
name: Maiorano, E.
name: Masetti, N.
name: Meurs, E.
name: Modjaz, M.
name: Molinari, E.
name: Moretti, A.
name: Palazzi, E.
name: Pandey, S. B.
name: Piranomonte, S.
name: Poznanski, D.
name: Primak, N.
name: Romano, P.
name: Rossi, E.
name: Roy, R.
name: Silverman, J. M.
name: Stella, L.
name: Stratta, G.
name: Testa, V.
name: Vergani, S. D.
name: Vitali, F.
name: Zerbi, F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present and discuss the results of an extensive observational campaign devoted to GRB071010A, a long-duration gamma-ray burst detected by the Swift satellite. This event was followed for almost a month in the optical/near-infrared (NIR) with various telescopes starting from about 2min after the high-energy event. Swift-XRT observations started only later at about 0.4d. The light-curve evolution allows us to single out an initial rising phase with a maximum at about 7min, possibly the afterglow onset in the context of the standard fireball model, which is then followed by a smooth decay interrupted by a sharp rebrightening at about 0.6d. The rebrightening was visible in both the optical/NIR and X-rays and can be interpreted as an episode of discrete energy injection, although various alternatives are possible. A steepening of the afterglow light curve is recorded at about 1d. The entire evolution of the optical/NIR afterglow is consistent with being achromatic. This could be one of the few identified GRB afterglows with an achromatic break in the X-ray through the optical/NIR bands. Polarimetry was also obtained at about 1d, just after the rebrightening and almost coincident with the steepening. This provided a fairly tight upper limit of 0.9% for the polarized-flux fraction.
description: 11 pages, 3 figures, MNRAS, in press
High resolution optical spectroscopy of Plaskett's star
Creators: name: Linder, N.
name: Rauw, G.
name: Martins, F.
name: Sana, H.
name: De Becker, M.
name: Gosset, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present here the analysis of an extensive set of high resolution optical spectra of Plaskett's star (HD 47129). We use a disentangling method to separate the individual spectra of each star. We derive a new orbital solution and discuss the spectral classification of both components. A Doppler tomography technique applied to the emission lines H alpha and He II 4686 yields a Doppler map that illustrates the wind interactions in the system. Finally, an atmosphere code is used to determine the different chemical abundances of the system components and the wind parameters. HD 47129 appears to be an O8 III/I + O7.5 III binary system in a post RLOF evolutionary stage, where matter has been transferred from the primary to the secondary star. The He overabundance of the secondary supports this scenario. In addition, the N overabundance and C underabundance of the primary component confirm previous results based on X-ray spectroscopy and indicate that the primary is an evolved massive star. Furthermore, the secondary star has a large rotational velocity that deforms its surface, leading to a non-uniform distribution in effective temperature. This could explain the variations in the equivalent widths of the secondary lines with phase. We suggest that the wind of the secondary star is confined near the equatorial plane because of its high rotational velocity, affecting the ram pressure equilibrium in the wind interaction zone.
description: Accepted in A & A
Scalar resonances: scattering and production amplitudes
Creators: name: Boito, D. R.
name: Robilotta, M. R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Scattering and production amplitudes involving scalar resonances are known, according to Watson's theorem, to share the same phase $δ(s)$. We show that, at low energies, the production amplitude is fully determined by the combination of $δ(s)$ with another phase $ω(s)$, which describes intermediate two-meson propagation and is theoretically unambiguous. Our main result is a simple and almost model independent expression, which generalizes the usual $K$-matrix unitarization procedure and is suited to be used in analyses of production data involving scalar resonances.
description: 10 pages, 4 figures. Minor changes, references added, version to appear in Phys. Rev. D
Automatic Difficulty Classification of Arabic Sentences
Creators: name: Khallaf, Nouran
name: Sharoff, Serge
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: In this paper, we present a Modern Standard Arabic (MSA) Sentence difficulty classifier, which predicts the difficulty of sentences for language learners using either the CEFR proficiency levels or the binary classification as simple or complex. We compare the use of sentence embeddings of different kinds (fastText, mBERT , XLM-R and Arabic-BERT), as well as traditional language features such as POS tags, dependency trees, readability scores and frequency lists for language learners. Our best results have been achieved using fined-tuned Arabic-BERT. The accuracy of our 3-way CEFR classification is F-1 of 0.80 and 0.75 for Arabic-Bert and XLM-R classification respectively and 0.71 Spearman correlation for regression. Our binary difficulty classifier reaches F-1 0.94 and F-1 0.98 for sentence-pair semantic similarity classifier.
description: Accepted at WANLP 2021
Coherent spin relaxation in molecular magnets
Creators: name: Yukalov, V. I.
name: Henner, V. K.
name: Kharebov, P. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Numerical modelling of coherent spin relaxation in nanomagnets, formed by magnetic molecules of high spins, is accomplished. Such a coherent spin dynamics can be realized in the presence of a resonant electric circuit coupled to the magnet. Computer simulations for a system of a large number of interacting spins is an efficient tool for studying the microscopic properties of such systems. Coherent spin relaxation is an ultrafast process, with the relaxation time that can be an order shorter than the transverse spin dephasing time. The influence of different system parameters on the relaxation process is analysed. The role of the sample geometry on the spin relaxation is investigated.
description: Latex file, 22 pages, 7 figures
Impacts of COVID-19 on Construction
Creators: name: Alkhalouf, Hala
Publisher: name: Digital Repository at the University of Maryland
Year: 2020
Subjects: subject: Civil engineering
subject: FOS: Civil engineering
subject: Transportation
subject: Management

description: This research investigates and quantifies the impacts of coronavirus (COVID-19) on the duration and cost of construction projects, focusing specifically on two construction dimensions: supply chain and construction labor productivity. Conclusions on the topic were reached using two methods, namely performing two case studies and using Primavera 6 and Schedule Analyzer software to analyze schedule updates. Each of the case studies utilizes a real-life construction project that was active when the impact of the pandemic was at its peak (April 2020). The data also includes interviews with project managers and progress meeting minutes. Results reveal that COVID-19 has impacted the progress of construction in two ways: 1) delays resulting from the shutdown of the manufacturing facilities and suppliers that state officials deemed non-essential; 2) labor disruptions resulting from restrictions on gatherings, as well as absenteeism of workers who were either sick with COVID-19 or who were avoiding construction sites and preferred to stay home in response to state officials’ recommendations. The results suggest that contractors should request compensable time extensions, as they establish the basis for a legitimate claim that will lead to modifications of the contract time and/or total dollar amount. Future work may investigate the integration of tools and methods during the bidding and construction process that would mitigate the future impact of similar potential situations due to a pandemic or any other force majeure event. Future work may also investigate impacts of COVID-19 on construction sites outside the United States.
THE IMPACT OF HYPERMASCULINITY ON UNDERGRADUATE MEN’S PERCEPTIONS OF SEXUAL ASSAULT AND CONSENT
Creators: name: Dragan, Andrea
Publisher: name: Digital Repository at the University of Maryland
Year: 2020
Subjects: subject: Public health
subject: Hypermasculinity
subject: Rape Myth Acceptance
subject: Sexual Assault
subject: Sexual Consent

description: In the U.S., approximately 1 out of every 5 women reported a completed or attempted sexual assault in their lifetime, with women ages 18-24 being at significantly higher risk for assault. While sexual assault affects all genders, the majority of sexual assaults on campuses involve men assaulting women. Using a convenience sample of undergraduate men (n=59), this study investigated how hypermasculinity affects undergraduate male’s perceptions of sexual assault, consent, hook-up culture, and rape myth acceptance (RMA) using six validated inventories. Hypermasculinity was significantly associated with RMA (p = .001), and sexual consent attitudes and behaviors, such as a lack of perceived behavioral control (p= .004) and positive attitudes toward consent (p= .001). A significant relationship between hypermasculinity and motivations for participation in hook-up culture was also detected. These findings can inform universities how to utilize their limited resources to provide education to improve the prevalence of sexual assault.
STORMWATER QUALITY IMPROVEMENT BY AN ALUMINUM-BASED WATER TREATMENT RESIDUAL-INCORPORATED HIGH FLOW MEDIA PLUNGE POOL
Creators: name: Wang, Guangyi
Publisher: name: Digital Repository at the University of Maryland
Year: 2020
Subjects: subject: Environmental engineering
subject: FOS: Environmental engineering

description: Water treatment residual (WTR) is byproduct from the drinking water treatment process; WTR is made of aluminum-based or iron-based chemicals. It has been demonstrated as an advanced material to enhance phosphorus removal from stormwater runoff. In this field study, an aluminum-based WTR-incorporated high flow media (HFM) plunge pool in a residential area was monitored for 14 months to evaluate the removal of total suspended solids (TSS), phosphorus, and nitrogen in stormwater. Results indicate satisfactory removal of TSS, achieved via sedimentation and filtration. Moreover, total phosphorus (TP) concentrations were significantly reduced after treatment. All paired-sample events (13 events) exhibited positive (i.e., effluent EMC < influent EMC) TP removal. However, total nitrogen (TN) was not removed successfully due to 〖〖NO〗_3〗^--N export through mineralization and nitrification processes. Dissolved aluminum leaching is less than 0.05 mg/L. An unexpected effluent seepage with high iron concentrations caused a “baseflow” in the downstream pipe, which was a significant challenge in this project.
Tree Species Composition, Diversity and Above Ground Biomass of Two Forest Types at Redang Island, Peninsula Malaysia
Creators: name: Mahmud KHAIRIL, Mat NASHRIYAH
Publisher: name: Walailak University
Year: 2013
Subjects: Peninsular Malaysia, Redang Island, tree species diversity, above ground biomass, floristic variation

description: 1, 10, Walailak Journal of Science and Technology
Digital simulation of power system protection under transient conditions
Creators: name: Garrett, Bretton Wayne
Publisher: name: University of British Columbia
Year: 2010

description: This work demonstrates the use of digital simulation for analyzing protection system performance. For studies of complex, multi-relay protection systems, digital simulation provides utility engineers with an attractive alternative to relay testing techniques. The cost of digital simulation facilities can be lower than the cost of comparable testing facilities; relay hardware does not have to be made available for the test laboratory. Digital simulation would ordinarily be impractical for security and dependability studies, due to the thousands of individual simulations involved. The number of simulations needed can be greatly reduced by using a technique called "numerical logic replacement" for implementing the protection scheme logic. This unconventional technique makes near-misoperation visible from individual simulations. The likelihood of overlooking potential misoperation is thus much lower than with the usual direct (Boolean) implementations.
قراءة تحليلية في مؤتمر الأرشيفات العربية
Creators: name: عبدالرحمن فراج
name: Farrag, Abdelrahman
Publisher: name: Zenodo
Year: 2019
Subjects: الأرشيفات الوطنية
العالم العربي
الوثائق العربية

description: قراءة تحليلية لمؤتمر "دور الأرشيفات العربية في دعم مجتمع المعرفة العربي بين التحديات والتطلعات المستقبلية"، والذي توفر على تنظيمه "المركز الوطني للوثائق والمحفوظات" بالرياض بالمملكة العربية السعودية في الفترة 17-19/7/1440هـ الموافق 24-26/3/2019م.
description: عبدالرحمن فراج. قراءة تحليلية في مؤتمر الأرشيفات العربية. أحوال المعرفة. ع95 (يونيو 2019). ص ص 82-85.
Antioxidant activities and phenolic composition of Olive (Olea europaea) leaves
Creators: name: Khaliq, Abdul
name: Sabir, Syed Mubashar
name: Ahmed, Syed Dilnawaz
name: Boligon, Aline Augusti
name: Athayde, Margareth Linde
name: Jabbar, Abdul Jabbar
name: Qamar, Imtiaz
name: Khan, Asmatullah
Publisher: name: Journal of Applied Botany and Food Quality
Year: 2015

description: The present study compares the antioxidant activities of leaves of eight cultivars of olive. The aqueous extracts of leaves showed inhibition against thiobarbituric acid reactive species (TBARS) induced by pro-oxidant (10 µM FeSO4) in mice liver. The order of the antioxidant activity among cultivars on lipid peroxidation assay is Gemlik > Frantio > Doleca-Agogia > Moriolo > Mission > Uslu > Leccino > Carotina. Different varieties of olive showed good antioxidant properties, IC50 values ranged between22.46 to 198 µg/ml on 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay. The major phenolic acids, some flavonoid aglycone and glycosides were identified in leaves by high performance liquid chromatography. Ellagic acid (29.80 ± 0.02 mg/g), caffeic acid (15.73 ± 0.01mg/g), gallic acid (15.69 ± 0.01 mg/g), rutin (34.56 ± 0.03 mg/g), quercetin (16.41 ± 0.01 mg/g), epicatechin (11.04 ± 0.01 11.04 ± 0.01 mg/g) and quercetrin (15.32 ± 0.03 mg/g) were predominant in infusion of olive.
description: Journal of Applied Botany and Food Quality, Vol 88 (2015), p.16-21
Over 14% Efficiency on RST-Ribbon Solar Cells
Creators: name: Keller, P.
name: Hess, U.
name: Seren, S.
name: Junge, J.
name: De Moro, F.
name: Hahn, G.
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; 2053-2057
description: In solar cell production silicon wafer material still has a large impact on the total costs. Material losses
due to slicing wafers from ingots are one of the main reasons. Ribbon technologies can avoid these problems by
producing wafers directly out of the silicon melt. We focus on the Ribbon on Sacrificial Template (RST) method
which uses carbon-based substrates to cast silicon wafers. RST wafers have effective minority charge carrier
diffusion lengths in the range of ~120 m. Thus, the potential for good cell performances is given. A high efficiency
solar cell process developed for defect-rich multicrystalline silicon materials at the University of Konstanz was
applied on RST wafers. The goal was to gain insight into the material quality and properties to provide feedback for
the wafer production. With over 14%, we can present the so far highest obtained solar cell efficiency for this material.
High Temperature Growth for High Performance Selenization CIGS Solar Cells
Creators: name: Okato, T.
name: Usui, R.
name: Tomizawa, T.
name: Sera, Y.
name: Odaka, H.
Publisher: name: WIP
Year: 2012
Subjects: Thin Film Solar Cells
CdTe, CIS and Related Ternary and Quaternary Thin Film Solar Cells

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 2216-2218
description: High strain point glass is designed to tolerate much higher temperature than standard SLG. The use of the high strain
point glass enables CIGS growth at high temperatures. The purpose of this work is to demonstrate the importance of
the high temperature growth for the selenization CIGS solar cells. We show that by increasing the temperature
beyond which SLG is difficult to use the cell efficiency can be improved, and we achieve our highest efficiency of
17.5%. Further increase of the temperature leads to efficiency decrease.
We assume that Ga diffusion is the key to understand this behavior and employed simultaneous observation of EBIC
and EDX. At lower temperature segregation of the Ga is found, which suggests more thermal energy is necessary to
diffuse the Ga. Increasing the temperature to 580ºC, the Ga diffuses uniformly to create identical profile of the pn
junction. Carrier density and life time measurements are also performed and we confirm the improved crystal quality
thanks to the high temperature process. Further increase of the temperature, the Ga migrates throughout the CIGS
layer resulting in the low efficiency.
Exploiting Photonic Structures to Improve the Efficiency of Upconversion by Field Enhancement and a Modification of the Local Density of Photonic States
Creators: name: Wolf, S.
name: Herter, B.
name: Fischer, S.
name: Höhn, O.
name: Martín-Rodríguez, R.
name: Aeberhard, U.
name: Goldschmidt, J.C.
Publisher: name: WIP
Year: 2012
Subjects: Material Studies, New Concepts and Ultra-High Efficiency
New Materials, Cells and Modules

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 55-60
description: Upconversion of infrared photons has been established as a concept to mitigate transmission losses in
solar cells. Higher upconversion efficiencies, however, are necessary, to enable a profitable application of
upconverting components. In this paper, we examine the embedding of upconverting material into a photonic
structure to increase upconversion efficiencies. The structure influences the upconversion efficiency in two ways:
First, higher local field intensities increase the absorption and the population of higher excited states. Second, the
local density of photonic states is modified by the structure. Thus, the probabilities of desired transitions can be
increased. This work covers the design of a suitable model structure and its examination via various simulation
methods, most importantly finite-difference time-domain simulations, combined with an upconverter rate-equation
model. An increase of the upconversion efficiency by a factor of about 3.6 at an excitation irradiance of 200 Wm-2 is
determined.
The porcelain ricebowl : the revival of the urban individual economy in the People's Republic of China, 1978-84
Creators: name: Hershkovitz, Linda
Publisher: name: University of British Columbia
Year: 2010

description: This thesis concerns the rehabilitation of China's urban "individual economy" (small-scale private enterprise) in the transitional years 1978-84. After decades of suppression, the individual economy became an important feature of post-1978 economic policy, creating employment and reviving urban commerce and services. Despite unflagging support from central authorities, however, the growth of the sector was hampered by rigidities in a system designed to eliminate rather than accomodate private enterprise, by negative societal attitudes, and by opposition from basic-level cadres and agencies. All these problems stem from profound ambivalence about the role of private enterprise in what is meant to be a socialist economy. This study uses materials from published Chinese sources to examine the reasons for and manifestations of this problem, and explore its implications for the future of individual enterprise in China's cities. The first chapter defines the terms of reference and issues to be considered, and outlines the dimensions of the sector, including growth patterns, occupational structure, and demographic characteristics. Chapter 2 outlines the evolution of policy toward the individual economy from 1949 to 1976; it also summarizes the economic problems of the late 1970s, the basic features of the post-1978 development strategy, and the place of the individual economy within it. Chapter 3 describes the development of central policy between 1978 and 1984, and Chapter 4 deals with issues of regulation and administration, focusing on discrepancies between central policy and local implementation. Chapter 5 explores the socio-cultural reasons for these discrepancies, including societal attitudes, the interests and concerns of local cadres and agencies, the role of small peddlers in the traditional economy, and early Marxist attitudes toward small private trade. Chapter 6, a case study, shows how these issues converged in the case of one prominent entrepreneur. Chapter 7 examines discussions of the individual economy in the Chinese theoretical literature. The final chapter compares the Chinese experience with that of private trade in other socialist countries, and of small independent operators in other developing economies, and concludes by speculating on the future of small-scale private enterprise in the context of developing "socialism with Chinese features."
Establishment of a Solar Energy Kiosk as a Solar Field Laboratory
Creators: name: Da Silva, I.
name: Abbo, M.S.
name: Wassler, S.
name: Begumisa, E.
Publisher: name: WIP
Year: 2012
Subjects: PV Systems
Off-grid Applications

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 4316-4319
description: In Uganda, the Centre for Research in Energy and Energy Conservation (CREEC) is establishing solar energy kiosks as one of the ways of increasing access to modern types of energy. The energy kiosks will provide services such as solar lamp and phone charging, internet access, rent of portable DVD players, scanner, printer and copy machine services. CREEC will then use this opportunity to collect information from users about their preferred features, functionality, durability, willingness to pay and challenges faced in using solar pico-PV products. The results will then be information for the government and private sector to best design products that meet the expectations of the customers in terms of functionality, quality and affordability.
Recovering Multiplexing Loss Through Successive Relaying Using Repetition Coding
Creators: name: Fan, Yijia
name: Wang, Chao
name: Thompson, John
name: Poor, H. Vincent
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, a transmission protocol is studied for a two relay wireless network in which simple repetition coding is applied at the relays. Information-theoretic achievable rates for this transmission scheme are given, and a space-time V-BLAST signalling and detection method that can approach them is developed. It is shown through the diversity multiplexing tradeoff analysis that this transmission scheme can recover the multiplexing loss of the half-duplex relay network, while retaining some diversity gain. This scheme is also compared with conventional transmission protocols that exploit only the diversity of the network at the cost of a multiplexing loss. It is shown that the new transmission protocol offers significant performance advantages over conventional protocols, especially when the interference between the two relays is sufficiently strong.
description: To appear in the IEEE Transactions on Wireless Communications