cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Reconfiguring (non-spanning) arborescences
Creators: name: Ito, Takehiro
name: Iwamasa, Yuni
name: Kobayashi, Yasuaki
name: Nakahata, Yu
name: Otachi, Yota
name: Wasa, Kunihiro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences

description: In this paper, we investigate the computational complexity of subgraph reconfiguration problems in directed graphs. More specifically, we focus on the problem of reconfiguring arborescences in a digraph, where an arborescence is a directed graph such that its underlying undirected graph forms a tree and all vertices have in-degree at most 1. Given two arborescences in a digraph, the goal of the problem is to determine whether there is a (reconfiguration) sequence of arborescences between the given arborescences such that each arborescence in the sequence can be obtained from the previous one by removing an arc and then adding another arc. We show that this problem can be solved in polynomial time, whereas the problem is PSPACE-complete when we restrict arborescences in a reconfiguration sequence to directed paths or relax to directed acyclic graphs. We also show that there is a polynomial-time algorithm for finding a shortest reconfiguration sequence between two spanning arborescences.
description: 14 pages. This is a post-peer-review, pre-copyedit version of an article published in Theoretical Computer Science. The final authenticated version is available online at https://doi.org/10.1016/j.tcs.2022.12.007
Eidolon dupreanum
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Eidolon
Eidolon dupreanum

description: Eidolon dupreanum (Schlegel, 1867). Proc. Zool. Soc. Lond., 1866:419 [1877]. TYPE LOCALITY: Madagascar, Nossi Bé. DISTRIBUTION: Madagascar. COMMENTS: See comments under E. helvum.
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 140, DOI: 10.5281/zenodo.7353060
Phase coherence induced by correlated disorder
Creators: name: Hong, Hyunsuk
name: O'Keeffe, Kevin P.
name: Strogatz, Steven H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Dynamical Systems (math.DS)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider a mean-field model of coupled phase oscillators with quenched disorder in the coupling strengths and natural frequencies. When these two kinds of disorder are uncorrelated (and when the positive and negative couplings are equal in number and strength), it is known that phase coherence cannot occur and synchronization is absent. Here we explore the effects of correlating the disorder. Specifically, we assume that any given oscillator either attracts or repels all the others, and that the sign of the interaction is deterministically correlated with the given oscillator's natural frequency. For symmetrically correlated disorder with zero mean, we find that the system spontaneously synchronizes, once the width of the frequency distribution falls below a critical value. For asymmetrically correlated disorder, the model displays coherent traveling waves: the complex order parameter becomes nonzero and rotates with constant frequency different from the system's mean natural frequency. Thus, in both cases, correlated disorder can trigger phase coherence.
description: 6 pages, 6 figures
Microscopic Thick Film Contact Formation Mechanism to p(p+) Si and Influence of the Metal Contact on the Si Substrate - Lessons Learned from the KONSENS Project
Creators: name: Riegel, S.
name: Fritz, S.
name: Dressler, K.
name: Herguth, A.
name: König, M.
name: Hörteis, M.
name: Hahn, G.
Publisher: name: WIP
Year: 2015
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Silicon Solar Cell Characterisation and Modelling

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 507-510
description: The German research project KONSENS investigated the contact formation of screen-printed contacts
to crystalline silicon. Special focus was set on contact formation to boron emitters using Al containing Ag thick film
pastes and on the formation of local Al contacts. The contact resistances to B emitters using Al containing Ag thick
film pastes show dependence on surface topography, i.e. the surface texture. Regarding paste composition, we found
that contact formation may be influenced by the amount of Al, as well as by the amount of glass frit. The SiNX:H
layer serves as a mask during contact formation preserving the Si surface structure above the contact points. A small
hole within the SiNX:H layer allows for material exchange and thereby facilitates contact formation. This means that
the contact spots show the same surface morphology as the Si. Additionally, we find that the contact spots are
crystalline and consist mainly of Ag. The pn-junction can be smeared out at points of direct metal-silicon contact.
Our data suggest that the Al from the Ag thick film paste does not lead to local Al doping underneath the contact
spots. Our findings can be explained by a model for contact formation of Al containing Ag thick film pastes to B
emitters. The formation of Al rear contacts is influenced by the Al particle size in the Al thick film paste. Smaller Al
particles allow for a more homogenous full area Al BSF. On PERC rear structures smaller Al particles in the Al thick
film paste result in a thicker local Al BSF and less maximum spread distance of diffused Si in the Al thick film paste.
Eidolon helvum
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Eidolon
Eidolon helvum

description: Eidolon helvum (Kerr, 1792). In Linnaeus, Anim. Kingdom, l(l):xvii, 91. TYPE LOCALITY: Senegal. DISTRIBUTION: Senegal to Ethiopia to South Africa; SW Arabia; islands in Guinea Gulf and off E Africa. SYNONYMS: buettikoferi, leucomelas, mollipilosus, paleaceus, palmarum, sabaeum, stramineus. COMMENTS: Includes sabaeum; see Hayman and Hill (1971), who also included dupreanum; but also see Bergmans (1990) who retained dupreanum as a separate species. See DeFrees and Wilson (1988, Mammalian Species, 312), who also included dupreanum.
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 141, DOI: 10.5281/zenodo.7353060
description: {"references": ["Hayman, R. W., and J. E. Hill. 1971. Order Chiroptera. Part 2. Pp. 1 - 73, in The mammals of Africa: An identification manual (J. Meester and H. W. Setzer, eds.) [issued 15 Jul 1971]. Smithsonian Institution Press, Washington, D. C., not continuously paginated.", "Bergmans, W. 1990. Taxonomy and biogeography of African fruit bats (Mammalia: Megachiroptera). 3. The genera Scotonycteris Matschie, 1894, Casinycteris Thomas, 1910, Pteropus Brisson, 1762, and Eidolon Rafinesque, 1815. Beaufortia, 40 (7): 111 - 177.", "DeFrees, S. L., and D. E. Wilson. 1988. Eidolon helvum. Mammalian Species, 312: 1 - 5."]}
The effects of the menopause on left ventricular mechanics
Creators: name: Nio, Amanda
Publisher: name: Cardiff Metropolitan University
Year: 2022
Subjects: Exercise physiology

description: Abstract. Ageing is associated with sex-specific decreases in cardiac function that may be explained by the menopause. However, the effects of the menopause on regional myocardial function and the practical implications of menopause-related differences in cardiac function are unknown. The aim of this thesis was to investigate the effects of the menopause on left ventricular (LV) function and mechanics at rest, and in response to physiological tests and exercise training. In the first study, resting LV function and mechanics were compared between middle-aged pre- and post-menopausal women, as part of an ageing study comprising young adult and middle-aged men and women. Post-menopausal women had lower LV function and mechanics than pre-menopausal women. Middle-aged men had greater peak systolic apical LV mechanics compared with middle-aged women, but there was no evidence that apical mechanics differed between younger men and women. These findings suggest that the menopause lowers LV mechanics, but may only partly explain sex-specific differences in LV apical mechanics with ageing. In the second study, the effects of 12 weeks of high-intensity aerobic interval training on LV function and mechanics were compared between pre- and post-menopausal women. Post-menopausal women had a smaller increase in peak aerobic capacity after exercise training, compared with pre-menopausal women. Physiological testing with lower body negative pressure and submaximal supine cycling revealed higher LV basal mechanics in pre-menopausal women after exercise training compared with post-menopausal women, in contrast to the age-related sex differences observed at the apex in the first study. These findings suggest that the menopause may reduce aerobic adaptability and influence regional LV mechanics. To investigate whether exercise training mitigates the effects of the menopause on LV function and mechanics, the Bayes factor was used to complement statistical inferences from P-values in the third study. Exercise training in post-menopausal women caused an average 5% increase in likelihood of similar LV mechanics relative to untrained pre-menopausal women. Collectively, this thesis provides new evidence for the effects of the menopause on regional LV mechanics and aerobic adaptability. Future work should investigate the potential effects of exercise training intensity and duration on LV mechanics and aerobic adaptability between pre- and post-menopausal women.
Implementation and Optimization of an Industrial Mc-Si PERC Process for Mass Production
Creators: name: Denafas, J.
name: Petreniene, L.
name: Meskereviciene, K.
name: Pranaitis, M.
name: Stonkus, A.
name: Juzumas, V.
name: Dippell, T.
name: Hain, A.
Publisher: name: WIP
Year: 2015
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Manufacturing Issues and Processing

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 525-530
description: Rear passivated c-Si solar cells with local contacts (PERC - Passivated Emitter and Rear Cell) have been
shown to be an evolutionary next generation cell type that allows an efficiency gain of up to 1 % (abs., mc-Si material)
compared to a conventional Al-BSF cell structure and that is suitable to be implemented into existing industrial c-Si
production lines [1,2]. Several institutes as well as cell and equipment manufactures are currently implementing PERC
processes into mass production both for CZ and mc Silicon cells [3-8,10].
This paper reports about the upgrade of an industrial Al-BSF mc-Si cell production line to three busbar mc PERC
cells and the implementation and optimization all relevant process steps on industrial equipment. Process adaptations
include single sided rear polishing, ICP-PE CVD AlOxSiNy rear passivation, ps and ns laser contact opening as well as
adapted screen printing and firing processes. A stable efficiency gain of up to 1.0 % (abs.) could be achieved compared to
the Al-BSF baseline process for mc-Si wafer material of different quality and origin and for different printing pastes.
Further possible improvements are discussed. The mc-Si p type PERC solar cells have been assembled into glass/glass
modules and tested for degradation in the laboratory and in a real field test under outdoor conditions in Lithuanian
climate.
Tellus regional surface water geochemistry: environmental and mineral exploration applications
Creators: name: Gallagher, V.
name: Grunsky, E. C.
name: Fitzsimons, M. M.
name: Browne, M. A.
name: Lilburn, S.
name: Symons, J.
Publisher: name: Geological Society of London
Year: 2022
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Supplementary material.
Characterization of Selective Emitter Structures Formed by Laser Doping through ALD Al2O3 Layers
Creators: name: Sharma, A.
name: Cornagliotti, E.
name: Uruena, A.
name: Aleman, M.
name: Tous, L.
name: Russell, R.
name: Duerinckx, F.
name: Szlufcik, J.
name: Poortmans, J.
Publisher: name: WIP
Year: 2015
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Silicon Solar Cell Characterisation and Modelling

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 502-506
description: In this work, we demonstrate the formation and characterization of selective emitter structures on n-type
substrates. A selective p+ emitter is formed by a combination of boron diffusion and laser doping through a stack of
Al2O3 and SiOx respectively deposited by atomic layer deposition (ALD) and plasma enhanced chemical vapor
deposition (PECVD) while simultaneously ablating the dielectric stack to define the contact openings. The selective
emitter consists therefore of boron doping under the passivated area, and boron and aluminum doping under the contact
area. ALD Al2O3 acts as both the passivation layer of the p+ diffused emitter as well as a doping source of aluminum (Al).
First, the influence of laser power and speed, as well as dielectric stack thickness, are studied with the aim to obtain
consistent dielectric ablation and doping. Then, effective lifetime measurements are conducted as a function of contact
fraction (c.f.) to extract the saturation current (J0e, laser) at the laser process surface. Finally, contact resistance
measurements are carried out to assess the influence of different capping layers. The developed selective emitter structure
is used as proof of concept for large area, n-type Cz-Si, rear junction solar cells achieving efficiencies as high as 20.9%.
Rotational Symmetry Breaking in a Trigonal superconductor Nb-doped Bi2Se3
Creators: name: Asaba, Tomoya
name: Lawson, B. J.
name: Tinsman, Colin
name: Chen, Lu
name: Corbae, Paul
name: Li, Gang
name: Qiu, Y.
name: Hor, Y. S.
name: Fu, Liang
name: Li, Lu
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The search for unconventional superconductivity has been focused on materials with strong spin-orbit coupling and unique crystal lattices. Doped bismuth selenide (Bi$_2$Se$_3$) is a strong candidate given the topological insulator nature of the parent compound and its triangular lattice. The coupling between the physical properties in the superconducting state and its underlying crystal symmetry is a crucial test for unconventional superconductivity. In this paper, we report direct evidence that the superconducting magnetic response couples strongly to the underlying 3-fold crystal symmetry in the recently discovered superconductor with trigonal crystal structure, niobium (Nb)-doped bismuth selenide (Bi$_2$Se$_3$). More importantly, we observed that the magnetic response is greatly enhanced along one preferred direction spontaneously breaking the rotational symmetry. Instead of a simple 3-fold crystalline symmetry, the superconducting hysteresis loop shows dominating 2-fold and 4-fold symmetry. This observation confirms the breaking of the rotational symmetry and indicates the presence of nematic order in the superconducting ground state of Nb-doped Bi$_2$Se$_3$. Further, heat capacity measurements display an exponential decay in superconducting state and suggest that there is no line node in the superconducting gap. These observations provide strong evidence of odd-parity topological superconductivity.
description: 10 pages, 9 figures
Remarkable magnetostructural coupling around the magnetic transition in CeCo$_{0.85}$Fe$_{0.15}$Si
Creators: name: Correa, V. F.
name: Betancourth, D.
name: Sereni, J. G.
name: Caroca-Canales, N.
name: Geibel, C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report a detailed study of the magnetic properties of CeCo$_{0.85}$Fe$_{0.15}$Si under high magnetic fields (up to 16 Tesla) measuring different physical properties such as specific heat, magnetization, electrical resistivity, thermal expansion and magnetostriction. CeCo$_{0.85}$Fe$_{0.15}$Si becomes antiferromagnetic at $T_N \approx$ 6.7 K. However, a broad tail (onset at $T_X \approx$ 13 K) in the specific heat precedes that second order transition. This tail is also observed in the temperature derivative of the resistivity. However, it is particularly noticeable in the thermal expansion coefficient where it takes the form of a large bump centered at $T_X$. A high magnetic field practically washes out that tail in the resistivity. But surprisingly, the bump in the thermal expansion becomes a well pronounced peak fully split from the magnetic transition at $T_N$. Concurrently, the magnetoresistance also switches from negative to positive just below $T_X$. The magnetostriction is considerable and irreversible at low temperature ($\frac {ΔL}{L} \left(16 T\right) \sim$ 4$\times$10$^{-4}$ at 2 K) when the magnetic interactions dominate. A broad jump in the field dependence of the magnetostriction observed at low $T$ may be the signature of a weak ongoing metamagnetic transition. Taking altogether, the results indicate the importance of the lattice effects in the development of the magnetic order in these alloys.
description: 5 pages, 6 figures
On string functions and double-sum formulas
Creators: name: Mortenson, Eric T.
name: Postnova, Olga
name: Solovyev, Dmitry
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: String functions are important building blocks of characters of integrable highest modules over affine Kac--Moody algebras. Kac and Peterson computed string functions for affine Lie algebras of type $A_{1}^{(1)}$ in terms of Dedekind eta functions. We produce new relations between string functions by writing them as double-sums and then using certain symmetry relations. We evaluate the series using special double-sum formulas that express Hecke-type double-sums in terms of Appell--Lerch functions and theta functions, where we point out that Appell--Lerch functions are the building blocks of Ramanujan's classical mock theta functions.
description: 24 pages
Epomophorus Bennett 1836
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Epomophorus

description: Epomophorus Bennett, 1836. Proc. Zool. Soc. Lond., 1835:149 [1836]. TYPE SPECIES: Pteropus gambianus Ogilby, 1835. COMMENTS: Revised by Bergmans (1988), who transferred Micropteropus grandis to this genus. A key to this genus is presented in Boulay and Robbins (1989).
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 141, DOI: 10.5281/zenodo.7353060
description: {"references": ["Ogilby, W. 1835. Descriptions of Mammalia and birds from the Gambia. Proceedings of the Zoological Society of London, 1835: 97 - 105.", "Boulay, M. C., and C. B. Robbins. 1989. Epomophorus gambianus. Mammalian Species, 344: 1 - 5."]}
Luminescence Imaging Analysis of Light Trapping in Crystalline Si PV Modules
Creators: name: Liu, Z.
name: Peters, I.M.
name: Khoo, Y. S.
name: Shanmugam, V.
name: Stangl, R.
name: Aberle, A.G.
name: Wong, J.
Publisher: name: WIP
Year: 2015
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Silicon Solar Cell Characterisation and Modelling

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 444-447
description: In this study, we present a fast and easy-to-apply method of analysing luminescence images of PV
modules to evaluate the amount of photons harvested which are impinging on the inactive areas in c-Si PV modules.
The method quantifies the amount of harvested photons from the inactive areas based on the reciprocity relation
between luminescence emission and quantum efficiency. We demonstrate this characterization method using singlecell
mini-modules, studying two different inactive areas of the PV module where incident light is scattered. In the
first case, we evaluate the recaptured photons from optical scattering at the white backsheet of the cell surroundings.
We show that, at the backsheet area close to the cell edges, more than 20% of the photons are recaptured. In the
second case, we evaluate the light scattering from screen- printed metal fingers. From the screen-printed fingers,
~60% of the photons can be harvested. Furthermore, the results of these measurements are used as input parameters
to predict the optical gain in a full-size module.
On the Instability of Sensor Orientation in Gait Verification on Mobile Phone
Creators: name: Hoang, Thang
name: Choi, Deokjai
name: Nguyen, Thuc
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Authentication schemes using tokens or biometric modalities have been proposed to ameliorate the security strength on mobile devices. However, the existing approaches are obtrusive since the user is required to perform explicit gestures in order to be authenticated. While the gait signal captured by inertial sensors is understood to be a reliable profile for effective implicit authentication, recent studies have been conducted in ideal conditions and might therefore be inapplicable in the real mobile context. Particularly, the acquiring sensor is always fixed to a specific position and orientation. This paper mainly focuses on addressing the instability of sensor's orientation which mostly happens in the reality. A flexible solution taking advantages of available sensors on mobile devices which can help to handle this problem is presented. Moreover, a novel gait recognition method utilizes statistical analysis and supervised learning to adapt itself to the instability of the biometric gait under various circumstances is also proposed. By adopting PCA+SVM to construct the gait model, the proposed method outperformed other state-of-the-art studies, with an equal error rate of 2.45\% and accuracy rate of 99.14\% in terms of the verification and identification aspects being achieved, respectively.
description: 12 pages, 7 figures
Demonstration of a Novel Inspection System for a Solar Cell Using Terahertz Emission Imaging
Creators: name: Nakanishi, H.
name: Ito, A.
name: Mizubata, M.
name: Kawayama, I.
name: Murakami, H.
name: Tonouchi, M.
Publisher: name: WIP
Year: 2015
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Silicon Solar Cell Characterisation and Modelling

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 511-513
description: A laser terahertz emission microscope (LTEM) is a non-contact inspection technique based on a THz
emission spectroscopy and imaging that can visualize intensity of pulsed terahertz radiation from the materials and
devices excited by femtosecond laser pulses. We have applied LTEM to characterize local properties of a solar cell
and have demonstrated the potential of LTEM as imaging technique of photoexcited current in a solar cell. In this
study, we experimentally compared LTEM with conventional analysis methods, e. g. electroluminescence (EL), and
laser beam induced current (LBIC) images, in order to examine its feasibility as a solar cell inspection technique. It
was found that LTEM image was clearly different from EL and LBIC images and LTEM was more sensitive to the
surface morphology and crystallographic grains of solar cells than EL and LBIC. We could clearly distinguish grain
boundaries, steps and cracks in a polycrystalline silicon solar cell, which could not be seen with EL and LBIC.
Finally, we have succeeded in the development of the prototype of solar cell inspection system based on LTEM for
commercial application. The prototype system will be installed in the Fukushima Renewable Energy Institute, AIST
(FREA) in Japan.
Development of modified pyrophyllite carbon paste electrode for carbendazim detection
Creators: name: Rajić, Anđela I. Mitrović
name: Milićević, Jelena S.
name: Novaković, Jasmina D. Grbović
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology

description: This study aims to design the pyrophyllite-adapted carbon paste electrode (pCPE) and test it for potential use in wastewater purification systems. Structural characterization of pure pyrophyllite ore and mechanically modified pyrophyllite in mortar and pestle has been followed by XRD, SEM, PSA, and FTIR. Electrochemical characteristics were studied by cyclic voltammetry of pyrophyllite CPE in sulfuric acid and potassium ferrocyanide, as redox model compounds. Delamination, gliding, and folding of the layers and a decrease in particle and crystallite size have been observed, leading to the excellent electrocatalytic activity of pCPE. The developed pCPE has numerous benefits such as a simple preparation method, rapid response, and good sensitivity. The oxidation peak of carbendazim appears in Britton-Robinson buffer solutions (pH 4) at +0.9 V vs. Ag/AgCl. The developed method is linear in the concentration range of 3.2–29.2 ng cm−3, with r = 0.999 and the limit of detection of 1.9 ng cm−3.
Classical Theory of Quantum Work Distribution in Chaotic Fermion Systems
Creators: name: Grabarits, András
name: Kormos, Márton
name: Lovas, Izabella
name: Zaránd, Gergely
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a theory of quantum work statistics in generic chaotic, disordered Fermi liquid systems within a driven random matrix formalism. By extending P. W. Anderson's orthogonality determinant formula to compute quantum work distribution, we find that work statistics is non-Gaussian and is characterized by a few dimensionless parameters. At longer times, quantum interference effects become irrelevant and the quantum work distribution is well-described in terms of a purely classical ladder model with a symmetric exclusion process in energy space, while bosonization and mean field methods provide accurate analytical expressions for the work statistics. Our random matrix and mean field predictions are validated by numerical simulations for a two-dimensional disordered quantum dot, and can be verified by calorimetric measurements on nanoscale circuits.
description: 5+5 pages, 3+2 figures
Epomophorus angolensis Gray 1870
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Epomophorus
Epomophorus angolensis

description: Epomophorus angolensis Gray, 1870. Cat. Monkeys, Lemurs, Fruit-eating Bats Brit. Mus., p. 125. TYPE LOCALITY: Angola, Benguella. DISTRIBUTION: W Angola, NW Namibia.
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 141, DOI: 10.5281/zenodo.7353060
Voc Evaluation of Solar Cells and Modules Using Absolute EL Images
Creators: name: Mochizuki, T.
name: Kim, C.
name: Yoshita, M.
name: Mitchell, J.
name: Zhu, Z.
name: Chen, S.
name: Takato, H.
name: Kanemitsu, Y.
name: Akiyama, H.
Publisher: name: WIP
Year: 2015
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Silicon Solar Cell Characterisation and Modelling

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 453-456
description: Open-circuit voltage (Voc) of silicon solar cells enclosed in modules were evaluated by analyzing
calibrated images of electroluminescence (EL), which is obtained using a InGaAs camera and a secondary radiance
standard. The EL emission rate of the respective cells were acquired by spatially integrating the EL image, then
analyzed using a reciprocal relationship between EL and solar cell operation, to obtain Voc at 1-sun. The resulted values
agreed well with the values measured with a solar simulator within the range of uncertainty (Voc = 6.8 mV per cell, k
= 2). This technique enables a quantitative evaluation of solar cells with EL imaging following graphical analysis to
evaluate crack and faults, and is a promising candidate for quantitative evaluation of degradation of photovoltaic
modules in solar power plants.
Delayed-type Hypersensitivity Reaction to Facial Dermal Fillers After COVID-19 Vaccination
Creators: name: Pitak-Arnnop, Poramate
name: Neff, Andreas
Publisher: name: figshare
Year: 2022
Subjects: subject: 110304 Dermatology
subject: FOS: Clinical medicine

description: Editorial presents hypersensivitiy to dermal fillers after COVID-19 vaccination,
Intrinsic time geometrodynamics: explicit examples
Creators: name: Lin, Huei-Chen
name: Soo, Chopin
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Intrinsic time quantum geometrodynamics resolved `the problem of time' and bridged the deep divide between quantum mechanics and canonical quantum gravity with a Schrodinger equation which describes evolution in intrinsic time variable. In this formalism, Einstein's general relativity is a particular realization of a wider class of theories. Explicit classical black hole and cosmological solutions and the motion of test particles are derived and analyzed in this work in the context of constant three-curvature solutions in intrinsic time geometrodynamics; and we exemplify how this formalism yields results which agree with the predictions of Einstein's theory.
description: 11 pages. This article is an extension of `Intrinsic time geometrodynamics: explicit examples', Huei-Chen Lin and Chopin Soo, Chin. J. Phys. 53, 110102 (2015), published in Chinese Journal of Physics (Volume 53, Number 6 (November 2015)), Special Issue On the occasion of 100 years since the birth of Einstein's General Relativity
23.2% Efficiency with Laser Processed IBC Solar Cells
Creators: name: Dahlinger, M.
name: Carstens, K.
name: Hoffmann, E.
name: Wansleben, S.
name: Köhler, J.R.
name: Zapf-Gottwick, R.
name: Werner, J.H.
Publisher: name: WIP
Year: 2015
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Silicon Solar Cell Improvements

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 462-465
description: We present our latest results on interdigitated back contact (IBC) laser processed solar cells, achieving
 = 23.2% efficiency on an area A = 4 cm² (independently confirmed by Fraunhofer ISE CalLab) and  = 20.8% on
A = 156 cm² (in-house measurement). The solar cells process uses four novel laser irradiation steps and thus avoids
complex photolithographic masking. Laser doping generates local emitter and back surface field using a pulsed green
laser. Furthermore, an UV laser locally ablates the rear passivation stack before aluminum metallization. The UVlaser
also structures the evaporated aluminum layer into the rear side finger and busbar metallization. A cost of ownership
calculation shows that the simple processing of the laser IBC solar cells reduces the module production costs
to 0.53 €/Wp while achieving high efficiencies.
Particle Acceleration in Solar Flares and Associated CME Shocks
Creators: name: Petrosian, Vahe'
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Observations relating the characteristics of electrons seen near Earth (SEPs) and those producing flare radiation show that in certain (prompt) events the origin of both population appears to be the flare site, which show strong correlation between the number and spectral index of SEP and hard X-ray radiating electrons, but in others(delayed), which are associated with fast CMEs, this relation is complex and SEPs tend to be harder. Prompt event spectral relation disagrees with that expected in thick or thin target models. We show that using a a more accurate treatment of the transport of the accelerated electrons to the footpoints and to the Earth can account for this discrepancy. Our results are consistent with those found by Chen and Petrosian (2013) for two flares using non-parametric inversion methods, according to which we have weak diffusion conditions, and trapping mediated by magnetic field convergence. The weaker correlations and harder spectra of delayed events can come about by re-acceleration of electrons in the CME shock environment. We describe under what conditions such a hardening can be achieved. Using this (acceleration at the flare and re-acceleration in the CME) scenario we show that we can describe the similar dichotomy that exists between the so called impulsive, highly enriched ($^3$He and heavy ions) and softer SEP events, and stronger more gradual SEP events with near normal ionic abundances and harder spectra. These methods can be used to distinguish the acceleration mechanisms and to constrain their characteristics.
description: 26 pages, 10 figures, ApJ in press
Incremental Efficiency Improvements of Mass-Produced PERC Cells Up to 24%, Predicted Solely with Continuous Development of Existing Technologies and Wafer Materials
Creators: name: Min, B.
name: Wagner, H.
name: Müller, M.
name: Neuhaus, H.
name: Brendel, R.
name: Altermatt, P.P.
Publisher: name: WIP
Year: 2015
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Silicon Solar Cell Characterisation and Modelling

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 473-476
description: The efficiency potential of mass-produced PERC cells is investigated by considering incremental
improvements of existing fabrication technologies and of p-type wafer materials. Using numerical device simulations,
we predict that the continuous developments of industrial-type PERC cells may lead to cell efficiencies beyond 24 %.
The main point here is to recognize the dominating losses in each improvement step and to improve existing
fabrication technology solely tailored to these losses. For this purpose, we present a method to identify the key
technology for the next efficiency level. Our study shows that the key points of near-future for the improvements of
PERC cells are: advanced emitter structures such as selective emitters, boron-added Al paste for the rear, wafers with
1 ms lifetime, multi wires instead of busbars and 10 μm narrow fingers with high aspect ratio. The predicted
efficiencies lead us to the conclusion that PERC cells will dominate the market and define the moving target for some
time to come.
Optimizing Real-Time Vaccine Allocation in a Stochastic SIR Model
Creators: name: Nguyen, Chantal
name: Carlson, Jean M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: Real-time vaccination following an outbreak can effectively mitigate the damage caused by an infectious disease. However, in many cases, available resources are insufficient to vaccinate the entire at-risk population, logistics result in delayed vaccine deployment, and the interaction between members of different cities facilitates a wide spatial spread of infection. Limited vaccine, time delays, and interaction (or coupling) of cities lead to tradeoffs that impact the overall magnitude of the epidemic. These tradeoffs mandate investigation of optimal strategies that minimize the severity of the epidemic by prioritizing allocation of vaccine to specific subpopulations. We use an SIR model to describe the disease dynamics of an epidemic which breaks out in one city and spreads to another. We solve a master equation to determine the resulting probability distribution of the final epidemic size. We then identify tradeoffs between vaccine, time delay, and coupling, and we determine the optimal vaccination protocols resulting from these tradeoffs.
Circular arc polygons, numerical conformal mappings, and moduli of quadrilaterals
Creators: name: Nasser, Mohamed
name: Rainio, Oona
name: Rasila, Antti
name: Vuorinen, Matti
name: Wallace, Terry
name: Yu, Hang
name: Zhang, Xiaohui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Complex Variables (math.CV)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65E05, 30C85, 31A15

description: We study numerical conformal mappings of planar Jordan domains with boundaries consisting of finitely many circular arcs and compute the moduli of quadrilaterals for these domains. Experimental error estimates are provided and, when possible, comparison to exact values or other methods are given. The main ingredients of the computation are boundary integral equations combined with the fast multipole method.
Compositeness of Near Threshold Quasi-Bound States
Creators: name: Kamiya, Yuki
name: Hyodo, Tetsuo
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the compositeness of unstable hadrons which lie near the two-hadron threshold. In the framework of the effective field theory, we derive the relation between the compositeness of stable bound states with observables. We then extend this relation for the quasi-bound states with finite decay width. A prescription to interpret the complex value of the compositeness is presented. With this method, we show that Lambda(1405) is dominated by the Kbar N composite component and a_0(980) have only small Kbar K fraction.
description: 6 pages, no figure, talk given at the XVI International Conference on Hadron Spectroscopy (Hadron2015), Sep. 13-18, 2015, Newport News, VA
Epomophorus gambianus
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Epomophorus
Epomophorus gambianus

description: Epomophorus gambianus (Ogilby, 1835). Proc. Zool. Soc. Lond., 1835:100. TYPE LOCALITY: Gambia. DISTRIBUTION: Senegal to W Ethiopia; S Tanzania to Angola and South Africa. SYNONYMS: crypturus, epomophorus, guineensis, macrocephalus, megacephalus, parvus, pousarguesi, reii, tohitei, zechi. COMMENTS: See Boulay and Robbins (1989, Mammalian Species, 344).
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 141, DOI: 10.5281/zenodo.7353060
description: {"references": ["Boulay, M. C., and C. B. Robbins. 1989. Epomophorus gambianus. Mammalian Species, 344: 1 - 5."]}
Geometric Defects in Quantum Hall States
Creators: name: Gromov, Andrey
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We describe a geometric (or gravitational) analogue of the Laughlin quasiholes in the fractional quantum Hall states. Analogously to the quasiholes these defects can be constructed by an insertion of an appropriate vertex operator into the conformal block representation of a trial wavefunction, however, unlike the quasiholes these defects are extrinsic and do not correspond to true excitations of the quantum fluid. We construct a wavefunction in the presence of such defects and explain how to assign an electric charge and a spin to each defect, and calculate the adiabatic, non-abelian statistics of the defects. The defects turn out to be equivalent to the genons in that their adiabatic exchange statistics can be described in terms of representations of the mapping class group of an appropriate higher genus Riemann surface. We present a general construction that, in principle, allows to calculate the statistics of $\mathbb Z_n$ genons for any "parent" topological phase. We illustrate the construction on the example of the Laughlin state and perform an explicit calculation of the braiding matrices. In addition to non-abelian statistics geometric defects possess a universal abelian overall phase, determined by the gravitational anomaly.
description: 27 pages, 10 figures
Process Simplification and Improvement of Rear Side of IBC Cells by Means of PECVD SiOx and Epitaxy
Creators: name: Li, Y.
name: Récaman Payo, M.
name: Zielinski, B.
name: Debucquoy, M.
name: Poortmans, J.
Publisher: name: WIP
Year: 2015
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Silicon Solar Cell Improvements

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 466-469
description: We propose a new process flow for interdigitated back contact (IBC) cells, based on plasma enhanced
chemical vapor deposition (PECVD) SiOx and silicon epitaxy. These technologies contribute to a simplification of the
flow by reducing the number of high temperature processing steps. We show that PECVD SiOx followed by thermal
annealing exhibits a passivation quality equivalent to thermal oxide. Moreover we demonstrate that both the p-type
emitter and the n-type BSF can be realized by epitaxial growth of silicon. Solar cells of 20mm×20mm have been
fabricated, both with a homogeneous BSF and with a local BSF architecture. Best cells achieved an efficiency of
22.9% and 23.2% for homogeneous BSF and local BSF respectively.
New commutation relations for quantum gravity
Creators: name: Soo, Chopin
name: Yu, Hoi-Lai
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A new set of fundamental commutation relations for quantum gravity is presented. The basic variables are the eight components of the unimodular part of the spatial dreibein and eight SU(3) generators which correspond to Klauder's momentric variables. The commutation relations are not canonical, but they have well defined group theoretical meanings. All fundamental entities are dimensionless; and quantum wave functionals are preferentially selected to be in the dreibein representation.
description: 4 pages. Published as `New commutation relations for quantum gravity', Chopin Soo and Hoi-Lai Yu, Chin. J. Phys. 53, 110106 (2015), Chinese Journal of Physics (Volume 53, Number 6 (November 2015)) Special Issue On the occasion of 100 years since the birth of Einstein's General Relativity
LIGO gravitational wave detection, primordial black holes and the near-IR cosmic infrared background anisotropies
Creators: name: Kashlinsky, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: LIGO's discovery of a gravitational wave from two merging black holes (BHs) of similar masses rekindled suggestions that primordial BHs (PBHs) make up the dark matter (DM). If so, PBHs would add a Poissonian isocurvature density fluctuation component to the inflation-produced adiabatic density fluctuations. For LIGO's BH parameters, this extra component would dominate the small-scale power responsible for collapse of early DM halos at z>10, where first luminous sources formed. We quantify the resultant increase in high-z abundances of collapsed halos that are suitable for producing the first generation of stars and luminous sources. The significantly increased abundance of the early halos would naturally explain the observed source-subtracted near-IR cosmic infrared background (CIB) fluctuations, which cannot be accounted for by known galaxy populations. For LIGO's BH parameters this increase is such that the observed CIB fluctuation levels at 2 to 5 micron can be produced if only a tiny fraction of baryons in the collapsed DM halos forms luminous sources. Gas accretion onto these PBHs in collapsed halos, where first stars should also form, would straightforwardly account for the observed high coherence between the CIB and unresolved cosmic X-ray background in soft X-rays. We discuss modifications possibly required in the processes of first star formation if LIGO-type BHs indeed make up the bulk or all of DM. The arguments are valid only if the PBHs make up all, or at least most, of DM, but at the same time the mechanism appears inevitable if DM is made of PBHs.
description: Ap.J. Letters, in press
Application of Carrier De-Smearing of Photoluminescence Images on Silicon Wafers
Creators: name: Phang, S.P.
name: Sio, H.C.
name: Macdonald, D.
Publisher: name: WIP
Year: 2015
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Silicon Solar Cell Characterisation and Modelling

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 448-452
description: Lateral carrier diffusion can lead to significant smearing in photoluminescence (PL) images of silicon
wafers with high lifetime or localised recombination centres. A method to de-smear the PL image by applying the
continuity equation in two dimensions has been proposed previously and demonstrated on a virtual wafer with simulated
carrier diffusion and artificial random Gaussian noise. This work will demonstrate the de-smearing method
experimentally by using a partially shaded monocrystalline silicon wafer. A criterion for determining the filter parameter
is also proposed based on the convergence of multiple images measured under the same settings and filtered and desmeared
in parallel. The results show that the de-smearing method is effective across most of the wafer, with the
exception of regions very close to the shaded edge where the signal to noise ratio is poor. The de-smearing method was
also applied to PL images on a high lifetime n-type multicrystalline wafer and for Fe imaging of p-type multicrystalline
silicon. De-smearing of the PL images suggests that the intra grain lifetime of the n-type multicrystalline silicon can
reach up to 0.8 ms but is limited by recombination in the grain boundaries. The application of de-smearing for Fe
imaging results in a sharper Fe profile near the grain boundaries.
Non-Semisimple TQFT's and BPS $q$-Series
Creators: name: Costantino, Francesco
name: Gukov, Sergei
name: Putrov, Pavel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geometric Topology (math.GT)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We propose and in some cases prove a precise relation between 3-manifold invariants associated with quantum groups at roots of unity and at generic $q$. Both types of invariants are labeled by extra data which plays an important role in the proposed relation. Bridging the two sides - which until recently were developed independently, using very different methods - opens many new avenues. In one direction, it allows to study (and perhaps even to formulate) $q$-series invariants labeled by spin$^c$ structures in terms of non-semisimple invariants. In the opposite direction, it offers new insights and perspectives on various elements of non-semisimple TQFT's, bringing the latter into one unifying framework with other invariants of knots and 3-manifolds that recently found realization in quantum field theory and in string theory.