cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
How Much Depth Information can Radar Contribute to a Depth Estimation Model?
Creators: name: Lo, Chen-Chou
name: Vandewalle, Patrick
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Recently, several works have proposed fusing radar data as an additional perceptual signal into monocular depth estimation models because radar data is robust against varying light and weather conditions. Although improved performances were reported in prior works, it is still hard to tell how much depth information radar can contribute to a depth estimation model. In this paper, we propose radar inference and supervision experiments to investigate the intrinsic depth potential of radar data using state-of-the-art depth estimation models on the nuScenes dataset. In the inference experiment, the model predicts depth by taking only radar as input to demonstrate the inference capability using radar data. In the supervision experiment, a monocular depth estimation model is trained under radar supervision to show the intrinsic depth information that radar can contribute. Our experiments demonstrate that the model using only sparse radar as input can detect the shape of surroundings to a certain extent in the predicted depth. Furthermore, the monocular depth estimation model supervised by preprocessed radar achieves a good performance compared to the baseline model trained with sparse lidar supervision.
description: published on EI2023, 7 pages, 4 figures, 2 tables
Very Large Scale PV Plants for a Renewable Energy Future
Creators: name: Komoto, K.
name: Ehara, T.
name: Breyer, C.
name: Wang, S.
name: Cunow, E.
name: Faiman, D.
name: Sinha, P.
name: Enebish, N.
Publisher: name: WIP
Year: 2015
Subjects: PV - A MAJOR ELECTRICITY SOURCE
PV Globalisation, Policies and Administrative Issues

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 3247-3250
description: In order to meet the environmental challenge in the 21st Century, renewable energy must play an
important role. PV is one of the most promising renewable energy technologies. It may be no exaggeration to say that
we’re now coming to the stage of energy transition by PV power plants. PV power plants came on the market first in
the latter half of 2000s. Since then, a capacity of the largest PV power plant in the world has been broken every year.
In 2014, some PV plants over 500MW started operation. Currently, a share of PV power plants will be 15% or more
of the total PV installation in the world. The technical and economic feasibility of the large scale PV power plants are
already proven, and the environmental and socio-economic benefits can make the project more attractive. To deploy
large scale PV power plants as a major power source, the feasibility and expected benefits of PV power plants are
analysed, as well as a potential for global energy system.
DCT-Former: Efficient Self-Attention with Discrete Cosine Transform
Creators: name: Scribano, Carmelo
name: Franchini, Giorgia
name: Prato, Marco
name: Bertogna, Marko
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Since their introduction the Trasformer architectures emerged as the dominating architectures for both natural language processing and, more recently, computer vision applications. An intrinsic limitation of this family of "fully-attentive" architectures arises from the computation of the dot-product attention, which grows both in memory consumption and number of operations as $O(n^2)$ where $n$ stands for the input sequence length, thus limiting the applications that require modeling very long sequences. Several approaches have been proposed so far in the literature to mitigate this issue, with varying degrees of success. Our idea takes inspiration from the world of lossy data compression (such as the JPEG algorithm) to derive an approximation of the attention module by leveraging the properties of the Discrete Cosine Transform. An extensive section of experiments shows that our method takes up less memory for the same performance, while also drastically reducing inference time. This makes it particularly suitable in real-time contexts on embedded platforms. Moreover, we assume that the results of our research might serve as a starting point for a broader family of deep neural models with reduced memory footprint. The implementation will be made publicly available at https://github.com/cscribano/DCT-Former-Public
Planning and Designing of Distributed PV of Suzhou Industrial Park
Creators: name: Li, T.
name: Wang, W.
Publisher: name: WIP
Year: 2015
Subjects: PV - A MAJOR ELECTRICITY SOURCE
PV Business Opportunities

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 3251-3252
description: In this paper, planning and designing of distributed PV of Suzhou Industrial Park are discussed,
including financing mode, operation mode and profit mode. Domestic subsidies case is described detailed. The total
installed capacity of the roof and the total generating capacity situation are shown and internal rate of return and
payback period of five cases are calculated, proving the local development of distributed PV systems can be
profitable. Suzhou Industrial Park plans to install distributed PV of 1232.8MW and about 249.09 hundred million
yuan of GDP could be created.
New High Alpine PV Installation on the “Top of Europe”
Creators: name: Schuepbach, E.
name: Schott, T.
name: Kuonen, F.
name: Muntwyler, U.
Publisher: name: WIP
Year: 2015
Subjects: PV - A MAJOR ELECTRICITY SOURCE
PV Business Opportunities

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 3187-3190
description: The Photovoltaic Laboratory (PV LAB) at Bern University of Applied Sciences BFH in Burgdorf, Switzerland, has concentrated on performance measurements of alpine PV-installations since the 1980s. As a reaction to an enhanced interest in winter electricity production from alpine PV-installations and its role for the implementation of the Swiss Energy Strategy 2050, the PV LAB enforced its research activities in the field. In 2014, an already existing PV-site installed in 1993 at the high-elevation research station at Jungfraujoch (3 454 m asl) in the Swiss Alps was extended with new PV technology. The analysis of recorded energy yields produced in 2015 demonstrates an enhanced power output of the new PV technology as compared to the state-of-the-art technology 20 years ago. The results are expected to offer new insight into alpine PV production through the comparison of photovoltaic technology.
Nyctimene certans Andersen 1912
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Nyctimene
Nyctimene certans

description: Nyctimene certans Andersen, 1912. Ann. Mag. Nat. Hist., ser. 9, 8:95. TYPE LOCALITY: New Guinea, Irain Jaya, Mount Goliath. DISTRIBUTION: New Guinea. COMMENTS: Formerly included in N. cyclotis but see Peterson (1991).
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 144, DOI: 10.5281/zenodo.7353060
description: {"references": ["Peterson, R. L. 1991. Systematic variation in the megachiropteran tube-nosed bats Nyctimene cyclotis and N. certans. Bulletin of the American Museum of Natural History, 206: 26 - 41."]}
Indoor 5G 3GPP-like Channel Models for Office and Shopping Mall Environments
Creators: name: Haneda, Katsuyuki
name: Tian, Lei
name: Asplund, Henrik
name: Li, Jian
name: Wang, Yi
name: Steer, David
name: Li, Clara
name: Balercia, Tommaso
name: Lee, Sunguk
name: Kim, YoungSuk
name: Ghosh, Amitava
name: Thomas, Timothy
name: Nakamura, Takehiro
name: Kakishima, Yuichi
name: Imai, Tetsuro
name: Papadopoulas, Haralabos
name: Rappaport, Theodore S.
name: MacCartney, George R.
name: Samimi, Mathew K.
name: Sun, Shu
name: Koymen, Ozge
name: Hur, Sooyoung
name: Park, Jeongho
name: Zhang, Charlie
name: Mellios, Evangelos
name: Molisch, Andreas F.
name: Ghassamzadah, Saeed S.
name: Ghosh, Arun
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Future mobile communications systems are likely to be very different to those of today with new service innovations driven by increasing data traffic demand, increasing processing power of smart devices and new innovative applications. To meet these service demands the telecommunications industry is converging on a common set of 5G requirements which includes network speeds as high as 10 Gbps, cell edge rate greater than 100 Mbps, and latency of less than 1 msec. To reach these 5G requirements the industry is looking at new spectrum bands in the range up to 100 GHz where there is spectrum availability for wide bandwidth channels. For the development of new 5G systems to operate in bands up to 100 GHz there is a need for accurate radio propagation models which are not addressed by existing channel models developed for bands below 6 GHz. This paper presents a preliminary overview of the 5G channel models for bands up to 100 GHz in indoor offices and shopping malls, derived from extensive measurements across a multitude of bands. These studies have found some extensibility of the existing 3GPP models to the higher frequency bands up to 100 GHz. The measurements indicate that the smaller wavelengths introduce an increased sensitivity of the propagation models to the scale of the environment and show some frequency dependence of the path loss as well as increased occurrence of blockage. Further, the penetration loss is highly dependent on the material and tends to increase with frequency. The small-scale characteristics of the channel such as delay spread and angular spread and the multipath richness is somewhat similar over the frequency range, which is encouraging for extending the existing 3GPP models to the wider frequency range. Further work will be carried out to complete these models, but this paper presents the first steps for an initial basis for the model development.
description: To be published in 2016 IEEE International Conference on Communications Workshops (ICCW), Kuala Lumpur, Malaysia, May, 2016
Design and Realization of Three Different PV-Systems for Educational Purposes in Bolivia
Creators: name: Blieske, U.
name: Reiners, N.
name: Gecke, R.
name: Maixner, A.
name: Schorpp, P.
name: Schwarze, N.
name: Wolf, N.
name: Korber, D.
name: Muenzberg, J.
Publisher: name: WIP
Year: 2015
Subjects: PV - A MAJOR ELECTRICITY SOURCE
PV Globalisation, Policies and Administrative Issues

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 3216-3219
description: This paper summarizes design process and realization of three different photovoltaic energy supply
systems for two Bolivian professional schools in the area of Cochabamba: A 3-phase grid integrated system, a 1-
phase island/grid-connected system and a solar-home system with adapted solar modules. The energy supply is part
of an overall professional training concept under the leadership of Cristo Vive Bolivia and in cooperation with the
Faculty of Architecture at the Technical University of Berlin. The systems enhance the independence from the
national grid and lower the energy costs. Furthermore, the main goal is to implement a showpiece project for the
region with an educational purpose. The one-phase PV-island system is incorporated into an agricultural school
which has an adapted solar architecture, while the electric supply of the currently existing technical school is
enforced by the three-phase grid integrated PV installation. The PV systems allow the shift from class-room
education to project and problem based learning in the training program of young professionals in the field of
renewable energy.
Discovery of an extremely wide-angle bipolar outflow in AFGL 5142
Creators: name: Liu, Tie
name: Zhang, Qizhou
name: Kim, Kee-Tae
name: Wu, Yuefang
name: Lee, Chang-Won
name: Goldsmith, Paul F.
name: Li, Di
name: Liu, Sheng-Yuan
name: Chen, Huei-Ru
name: Tatematsu, Kenichi
name: Wang, Ke
name: Lee, Jeong-Eun
name: Qin, Sheng-Li
name: Mardones, Diego
name: Cho, Se-Hyung
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Most bipolar outflows are associated with individual young stellar objects and have small opening angles. Here we report the discovery of an extremely wide-angle ($\sim$180$\arcdeg$) bipolar outflow ("EWBO") in a cluster forming region AFGL 5142 from low-velocity emission of the HCN (3-2) and HCO$^{+}$ (3-2) lines. This bipolar outflow is along a north-west to south-east direction with a line-of-sight flow velocity of about 3 km~s$^{-1}$ and is spatially connected to the high-velocity jet-like outflows. It seems to be a collection of low-velocity material entrained by the high-velocity outflows due to momentum feedback. The total ejected mass and mass loss rate due to both high velocity jet-like outflows and the "EWBO" are $\sim$24.5 M$_{\sun}$ and $\sim1.7\times10^{-3}$ M$_{\sun}$~yr$^{-1}$, respectively. Global collapse of the clump is revealed by the "blue profile" in the HCO$^{+}$ (1-0) line. A hierarchical network of filaments was identified in NH$_{3}$ (1,1) emission. Clear velocity gradients of the order of 10 km~s$^{-1}$~pc$^{-1}$ are found along filaments, indicating gas inflow along the filaments. The sum of the accretion rate along filaments and mass infall rate along the line of sight is $\sim$3.1$\times10^{-3}$ M$_{\sun}$~yr$^{-1}$, which exceeds the total mass loss rate, indicating that the central cluster is probably still gaining mass. The central cluster is highly fragmented and 22 condensations are identified in 1.1 mm continuum emission. The fragmentation process seems to be determined by thermal pressure and turbulence. The magnetic field may not play an important role in fragmentation.
description: accepted by ApJ
Belastungen und Ressourcen im Alltag von Eltern mit Kindern mit ADHS
Creators: name: Kraft, Joy
Publisher: name: Zenodo
Year: 2020
Subjects: Sonderpädagogik
Aufmerksamkeitsdefizit-Syndrom
Eltern
Ressourcen
Masterarbeit

description: Das Zusammenleben mit einem Kind mit Aufmerksamkeitsdefizit und Hyperaktivitätsstörung (ADHS) bedeutet häufig für die ganze Familie aussergewöhnliche Herausforderungen und die Überforderung aller Beteiligten. Gegenstand der vorliegenden Untersuchung ist die Frage nach Belastungen und Ressourcen von Eltern von Kindern mit ADHS in Bezug auf ihre Alltagsgestaltung. Theoretische Grundlage für diese Untersuchung bilden die Theorie der Ressourcenerhaltung von Hobfoll, das Copingmodell von Hobfoll und Buchwald und das dyadische Coping von Bodenmann. In sechs qualitativen Leitfadeninterviews beschreiben drei betroffene Ehepaare ihren Alltag, ihr soziales Umfeld und ihre partnerschaftliche Beziehung. Durch die Auswertung mit qualitativer Inhaltsanalyse lassen sich verschiedene Belastungen und Ressourcen im Alltag von Vätern und Müttern mit ADHS Kindern zusammentragen. Die Erkenntnisse dieser Arbeit bereichern das systemische Gesamtbild eines ADHS Kindes und zeigen mögliche Stolpersteine der Zusammenarbeit zwischen den Eltern und der schulischen Heilpädagogin auf, und bieten somit Grundlage für weitere Studien.
Recent Progress of PV R&D Projects in Japan
Creators: name: Yamaguchi, M.
name: Yamada, H.
name: Katsumata, Y.
Publisher: name: WIP
Year: 2015
Subjects: PV - A MAJOR ELECTRICITY SOURCE
PV Globalisation, Policies and Administrative Issues

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 3194-3197
description: This paper overviews PV R&D projects in Japan as the Project Leader of the Project “High
Performance Photovoltaic System Technology Development for the Future” under the NEDO and the Research
Supervisor of the Research Area “Creative Clean Energy Generation by using Solar Energy” under the JST. Most
recently, world-record and second highest efficiencies of various types of solar cells have been demonstrated under
the NEDO Project: 1) 44.4% (under concentration) and 37.9% (under 1-sun) InGaP/GaAs/InGaAs inverted
metamorphic 3-junction solar cells by Sharp, 25.1% single crystalline Si Hetero-junction Back-Contact (HBC) solar
cell by Sharp (independently, 25.6% single crystalline Si HBC solar cells by Panasonic), 20.9% CIGS solar cell by
Solar Frontier, μc-Si thin-film single junction solar cell with stabilized efficiency of 11.77% and a-Si/μc-Si/μc-Si
thin-film triple-junction solar cell with stabilized efficiency of 13.73% by AIST, 11.9% dye-sensitized solar cell by
Sharp and 11.2% organic solar cell by Toshiba. Further improvements in performance, cost and reliability for various
types of solar cells are expected. Future prospects of photovoltaics are also discussed.
Nyctimene cyclotis K. Andersen 1910
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Nyctimene
Nyctimene cyclotis

description: Nyctimene cyclotis K. Andersen, 1910. Ann. Mag. Nat. Hist., ser. 7, 6:623. TYPE LOCALITY: Indonesia, Irian Jaya, Manokwari Div., Arfak Mtns. DISTRIBUTION: New Guinea; New Britain (Bismarck Arch.). COMMENTS: Formerly included certans, but see Peterson (1991).
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 144, DOI: 10.5281/zenodo.7353060
description: {"references": ["Peterson, R. L. 1991. Systematic variation in the megachiropteran tube-nosed bats Nyctimene cyclotis and N. certans. Bulletin of the American Museum of Natural History, 206: 26 - 41."]}
An Overview of Patent Application Data in the Field of Photovoltaics
Creators: name: Visentin, A.
name: Boero, M.
name: Königstein, C.
Publisher: name: WIP
Year: 2015
Subjects: PV - A MAJOR ELECTRICITY SOURCE
PV Globalisation, Policies and Administrative Issues

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 3203-3206
description: The present study is aimed at giving an update on patent activities in the photovoltaics (PV) field
covering the past 45 years. In this study, the number of patent applications published during this time period, per
year and for the whole period, in several of the most relevant solar cell technologies is analysed. Patent filing
figures and the origin of patent applications are shown for the different types of solar cells including polymer and
organic solar cells, and dye sensitized solar cells.
Non-Hermitian Quantum Quenches in Holography
Creators: name: Morales-Tejera, Sergio
name: Landsteiner, Karl
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The notion of non-Hermitian PT symmetric quantum theory has recently been generalized to the gauge/gravity duality. We study the evolution of such non-Hermitian holographic field theories when the couplings are varied with time with particular emphasis on the question non-unitary time vs. unitary time evolution. We show that a non-unitary time evolution in the dual quantum theory corresponds to a violation of the Null Energy Condition (NEC) in the bulk of the asymptotically AdS spacetime. We find that upon varying the non-Hermitian coupling the horizon of a bulk AdS black hole shrinks. On the other hand varying the Hermitian coupling in the presence of a constant non-Hermitian coupling still violates the NEC but results in a growing horizon. We also show that by introducing a non-Hermitian gauge field the time evolution can be made unitary, e.g. the NEC in the bulk is obeyed, and an exactly equivalent purely Hermitian description can be given.
description: 32 pages, 9 figures. Appendix on discrete symmetries added. Discussion regarding the event horizon added
Approximating basins of attraction for dynamical systems via stable radial bases
Creators: name: Cavoretto, Roberto
name: De Marchi, Stefano
name: De Rossi, Alessandra
name: Perracchione, Emma
name: Santin, Gabriele
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In applied sciences, such as physics and biology, it is often required to model the evolution of populations via dynamical systems. In this paper, we focus on the problem of approximating the basins of attraction of such models in case of multi-stability. We propose to reconstruct the domains of attraction via an implicit interpolant using stable radial bases, obtaining the surfaces by partitioning the phase space into disjoint regions. An application to a competition model presenting jointly three stable equilibria is considered.
Nyctimene draconilla Thomas 1922
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Nyctimene
Nyctimene draconilla

description: Nyctimene draconilla Thomas, 1922. Nova Guinea, 13:725. TYPE LOCALITY: Indonesia, Irian Jaya, Southern Div., Lorentz River, Bivak Isl. DISTRIBUTION: New Guinea. COMMENTS: Considered a subspecies of albiventer by Laurie and Hill (1954:46), but also see Hill (1983) and Koopman (1982).
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 144, DOI: 10.5281/zenodo.7353060
description: {"references": ["Laurie, E. M. O., and J. E. Hill. 1954. List of land mammals of New Guinea, Celebes and adjacent islands 1758 - 1952. British Museum (Natural History) Publications, London, 175 pp.", "Hill, J. E. 1983. Bats (Mammalia: Chiroptera) from Indo-Australia. Bulletin of the British Museum (Natural History), Zoology Series, 43: 103 - 208.", "Koopman, K. F. 1982. Results of the Archbold Expeditions. No. 109. Bats from eastern Papua and the east Papuan Islands. American Museum Novitates, 2747: 1 - 34."]}
Economic Analysis of Future Thin Film Solar Cells - Cost Estimates for High-Efficiency Compound Thin Film Tandem Solar Cells Based on Process Design
Creators: name: Inoue, T.
name: Yamada, K.
Publisher: name: WIP
Year: 2015
Subjects: PV - A MAJOR ELECTRICITY SOURCE
PV Business Opportunities

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 3191-3193
description: This paper examines the cost reduction potential of PV systems as technology develops to implement
photovoltaic electricity systems on a large scale. The cost structures of present and future PV systems are calculated
based on process design methodology. To assess future PV technology, we designed manufacturing process of
different type of solar cells consisting of monolayer and multi-junction types including 4 terminal based on CIGS or
III-V semiconductor materials. We have developed reliable calculation methodology for cost estimation of future PV
technology. We aggregated the costs of equipment, labor, raw materials, and utilities required to manufacture each
type of PV system based on our original equipment database. According to our cost-structure estimate, the
manufacturing cost of monolayer CIGS solar cells decrease from US$0.79/Wp to US$0.45/Wp in the case of 20%
monolayer module efficiency after 2030. The manufacturing cost of new CIGS tandem solar cells is calculated to be
US$0.33-0.45/Wp after achieving aggressive technology target. As these results, important technologies to be
developed are to control defects and interface of cell layers. This methodology of the relations between technology
progress and cost estimation clarifies business opportunity of various type of PV systems.
Photon echo transients from an inhomogeneous ensemble of semiconductor quantum dots
Creators: name: Poltavtsev, S. V.
name: Salewski, M.
name: Kapitonov, Yu. V.
name: Yugova, I. A.
name: Akimov, I. A.
name: Schneider, C.
name: Kamp, M.
name: Höfling, S.
name: Yakovlev, D. R.
name: Kavokin, A. V.
name: Bayer, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: An ensemble of quantum dot excitons may be used for coherent information manipulation. Due to the ensemble inhomogeneity any optical information retrieval occurs in form of a photon echo. We show that the inhomogeneity can lead to a significant deviation from the conventional echo timing sequence. Variation of the area of the initial rotation pulse, which generates excitons in a dot sub-ensemble only, reveals this complex picture of photon echo formation. We observe a retarded echo for π/2 pulses, while for 3π/2 the echo is advanced in time as evidenced through monitoring the Rabi oscillations in the time-resolved photon echo amplitude from (In,Ga)As/GaAs self-assembled quantum dot structures and confirmed by detailed calculations.
description: 15 pages, 4 figures
Robust singlet dimers with fragile ordering in two-dimensional honeycomb lattice of Li$_2$RuO$_3$
Creators: name: Park, Junghwan
name: Tan, Teck-Yee
name: Adroja, D. T.
name: Daoud-Aladine, A.
name: Choi, Seongil
name: Cho, Deok-Yong
name: Lee, Sang-Hyun
name: Kim, Jiyeon
name: Sim, Hasung
name: Morioka, T.
name: Nojiri, H.
name: Krishnamurthy, V. V.
name: Manuel, P.
name: Lees, M. R.
name: Streltsov, S. V.
name: Khomskii, D. I.
name: Park, Je-Geun
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: When an electronic system has strong correlations and a large spin-orbit interaction, it often exhibits a plethora of mutually competing quantum phases. How a particular quantum ground state is selected out of several possibilities is a very interesting question. However, equally fascinating is how such a quantum entangled state breaks up due to perturbation. This important question has relevance in very diverse fields of science from strongly correlated electron physics to quantum information. Here we report that a quantum entangled dimerized state or valence bond crystal (VBC) phase of Li2RuO3 shows nontrivial doping dependence as we perturb the Ru honeycomb lattice by replacing Ru with Li. Through extensive experimental studies, we demonstrate that the VBC phase melts into a valence bond liquid phase of the RVB (resonating valence bond) type. This system offers an interesting playground where one can test and refine our current understanding of the quantum competing phases in a single compound.
description: Scientific Reports (in press)
FP7-CHEETAH Project Knowledge Exchange Portal: an Advanced Tool to Efficiently Bring Information to the European Photovoltaic RTD Community
Creators: name: Roca, F.
name: Casaburi, D.
name: Bittkau, K.
name: Lux-Steiner, M.C.
name: Lauermann, I.
name: Gevorgyan, S.A.
name: Malbranche, P.
name: Aguila, O.N.
name: Rachow, T.
name: Sánchez-Plaza, G.
name: Sommeling, P.M.
name: Taylor, N.
name: Theologitis, I.T.
name: Van Nieuwenhuysen, K.
name: Kroon, J.M.
Publisher: name: WIP
Year: 2015
Subjects: PV - A MAJOR ELECTRICITY SOURCE
PV Globalisation, Policies and Administrative Issues

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 3198-3202
description: FP7-CHEETAH is a combined collaborative project (CP) and coordination and support action (CSA)
funded under the European Commission’s 7th Framework program and coordinated by ECN, NL with the aims to
solve specific R&D issues and to overcome fragmentation of European PV R&D by intensifying the collaboration
between R&D providers and industry to accelerate the industrialization of innovations. The project is also tightly
linked to the EERA-PV Joint Program. The CHEETAH Knowledge Exchange Area Portal (KEAP), in parallel to the
project web site and other dissemination activities (newsletter, communication, etc), constitutes the pillar of the
project to distribute information in a uniform and simple way. It is based on several very efficient ICT procedures by
operating from the collection to management of information by dynamic data base matrix: any uploaded information
is linked to all others. All interested browsers/readers can have efficient access to any stored data thanks to the
utilization of a search engine/query keywords and user friendly graphic interfaces. Based on the implementation of
SOPHi@webinar platform, the portal also offers its own e-learning platform.
CHEETAH KEAP represents for its peculiarities a major breakthrough in the field with highly innovative contents
and a substantial improvement in comparison with the state of the art of knowledge exchange on PV RTD.
A new model for nulling and moding in radio pulsars
Creators: name: Dyks, J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Single pulse behaviour of radio pulsars is usually interpreted in terms of the ExB drift of a radio beam. It is shown that antisymmetric arrangement of the radio-bright zones can produce several types of observed single pulse phenomena: the half-cycle jump in subpulse modulation phase, left-right-middle subpulse sequence and switching between the core-dominated and cone-dominated pulsation modes. The geometry can also produce nulling, both sporadic and intermodal. The model implies that the radio-quiet intervals that separate the main pulse and interpulse in PSR B0826-34 correspond to azimuthal breaks in the radio beam, instead of breaks in colatitude.
description: 2 pages, 1 figure, Proceedings IAU Symposium No. 363, 2022, Neutron Star Astrophysics at the Crossroads: Magnetars and the Multimessenger Revolution, E. Troja & M. Baring, eds
On Dynamics of Correlations in Quantum Many-Particle Systems
Creators: name: Gerasimenko, V. I.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences
subject: 35Q40, 82C40, 82C10

description: The paper deals with the problem of the rigorous description of the evolution of states of large particle quantum systems by means of correlation operators. A nonperturbative solution of the Cauchy problem of the hierarchy of nonlinear evolution equations for a sequence of marginal correlation operators is constructed. For initial states specified in terms of a one-particle density operator and correlation operators we also develop an approach to the description of the processes of the creation and the propagation of correlations within the framework of a one-particle density operator. Moreover, the mean field asymptotic behavior of constructed marginal correlation operators is established.
description: 17 pages. arXiv admin note: text overlap with arXiv:1407.1633
Nyctimene major
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Nyctimene
Nyctimene major

description: Nyctimene major (Dobson, 1877). Proc. Zool. Soc. Lond., 1877:117. TYPE LOCALITY: Papua New Guinea, Bismarck Arch., Duke of York Isl. DISTRIBUTION: D'Entrecasteaux Isis, Trobriand Isis, Bismarck and Louisiade Archs. (Papua New Guinea), Solomon Isis, and small islands off the north coast of New Guinea. A New Guinea mainland record is almost certainly erroneous; see Koopman (1979). SYNONYMS: geminus, lullulae, scitulus.
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 144, DOI: 10.5281/zenodo.7353060
description: {"references": ["Koopman, K. F. 1979. Zoogeography of mammals from islands off the northeastern coast of New Guinea. American Museum Novitates, 2690: 1 - 17."]}
PV as a Main Source of Electricity in the “Energy - Strategy in Switzerland”
Creators: name: Muntwyler, U.
name: Renken, C.
name: Wälti, A.
name: Kuonen, F.
Publisher: name: WIP
Year: 2015
Subjects: PV - A MAJOR ELECTRICITY SOURCE
PV Globalisation, Policies and Administrative Issues

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 3212-3215
description: The energy supply of the industrialized world is based on renewable energy, nuclear and fossil energies. For countries like Switzerland, the import of fossil and nuclear energy is a great economic burden. The transition towards 100% renewable energy supply hence offers a lot of opportunities. Here, we explain how Switzerland tackles this issue in the frame of the “Swiss Energy Strategy 2050”. The main avenue is higher energy efficiency in houses, cars and industry what should economise about 20TWh electric energy per year (i.e., 30% of the total consumption). Most processes contribute to these savings will be “electrified”, examples are heat pumps (hot water production, heating houses) or electric cars. In order to feed such “new consumers” and thus to replace five old nuclear power plants in Switzerland, the electricity should be produced from photovoltaics (PV). The Swiss Government aims to produce 12 TWh with PV and 4 TWh with wind and geothermal, while some minor sources are hydro, biomass and others.
Nyctimene malaitensis Phillips 1968
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Pteropodidae
Nyctimene
Nyctimene malaitensis

description: Nyctimene malaitensis Phillips, 1968. Univ. Kansas Pubi. Mus. Nat. Hist., 16:822. TYPE LOCALITY: Solomon Isis, Malaita Isl. DISTRIBUTION: Malaita Isl (Solomon Isis).
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 144, DOI: 10.5281/zenodo.7353060
A Guideline for Public Entities on Cost-Efficient Procurement of PV Assets
Creators: name: Bischof-Niemz, T.
name: Roro, K.T.
Publisher: name: WIP
Year: 2015
Subjects: PV - A MAJOR ELECTRICITY SOURCE
PV Business Opportunities

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 3149-3153
description: This paper presents a guideline for public entities on cost-efficient procurement of PV assets. Traditionally, screening of the responses to the request for proposal for the Engineering, Procurement and Construction (EPC) of a photovoltaic asset for a public entity is done using evaluation criteria based on installed capacity in kW, quality criteria and other user-defined specifications, while the final decision is based on total EPC price. This forces contractors to offer the minimum-required installed capacity at the minimum-required quality. In this study, however, a lifetime view is taken and Levelised Cost of Electricity (LCOE) are used to screen proposals, evaluate and determine the price ranking. LCOE of different proposals are determined using the comparison matrices of the projected installed size in kW, EPC price, Operation & Maintenance (O&M) fee and guaranteed performance ratio for an initial period. In this approach, contractors are issued with the financial model and they are required providing these inputs. Then the model calculates the LCOE. This approach requires all contractors to optimize their design towards lowest LCOE. The goal is to provide the best value on risk-adjusted, least-lifetime-cost basis.
Extended version of the halo-based group finder for both photometric and spectroscopic redshift data
Creators: name: Yang, Xiaohu
Publisher: name: Zenodo
Year: 2023

description: In this talk I will present the basic ideals of the halo-based group finder and its working flowchart. This group finder was successfully applied to spectroscopic redshift surveys including 2dFGRS and SDSS. To make full use of the much larger photometric redshift survey data, especially the DESI Legacy imaging Surveys, we extended the halo-based group finder with a very simple modification by taking into account the photometric redshift errors. From the photometric redshift surveys, the extended version group finder can achieve similar member galaxy completeness albeit somewhat larger interloper fractions. The most important advantage of this extension is that it can now deal with spectroscopic and photometric redshift data simultaneously. We successfully extracted the DESI LS DR8/9 group catalogs, which is made public and will be updated continuously with the DESI spectroscopic redshift data releases.
A Stochastic Approach to STDP
Creators: name: Wang, Runchun
name: Thakur, Chetan Singh
name: Hamilton, Tara Julia
name: Tapson, Jonathan
name: van Schaik, André
Publisher: name: arXiv
Year: 2016
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: We present a digital implementation of the Spike Timing Dependent Plasticity (STDP) learning rule. The proposed digital implementation consists of an exponential decay generator array and a STDP adaptor array. On the arrival of a pre- and post-synaptic spike, the STDP adaptor will send a digital spike to the decay generator. The decay generator will then generate an exponential decay, which will be used by the STDP adaptor to perform the weight adaption. The exponential decay, which is computational expensive, is efficiently implemented by using a novel stochastic approach, which we analyse and characterise here. We use a time multiplexing approach to achieve 8192 (8k) virtual STDP adaptors and decay generators with only one physical implementation of each. We have validated our stochastic STDP approach with measurement results of a balanced excitation/inhibition experiment. Our stochastic approach is ideal for implementing the STDP learning rule in large-scale spiking neural networks running in real time.
description: IEEE-International Symposium on Circuits and Systems (ISCAS)-2016
Resonant tunneling spectroscopy of valley eigenstates on a hybrid double quantum dot
Creators: name: Kobayashi, T.
name: van der Heijden, J.
name: House, M. G.
name: Hile, S. J.
name: Asshoff, Pablo
name: Gonzalez-Zalba, M. F.
name: Vinet, M.
name: Simmons, M. Y.
name: Rogge, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report electronic transport measurements through a silicon hybrid double quantum dot consisting of a donor and a quantum dot. Transport spectra show resonant tunneling peaks involving different valley states, which illustrate the valley splitting in a quantum dot on a Si/SiO2 interface. The detailed gate bias dependence of double dot transport allows a first direct observation of the valley splitting in the quantum dot, which is controllable between 160-240 ueV with an electric field dependence 1.2 +- 0.2 meV/(MV/m). A large valley splitting is an essential requirement to implement a physical electron spin qubit in a silicon quantum dot.
description: 10 pages, 3 figures
Nonreciprocal propagation of surface acoustic wave in Ni/LiNbO3
Creators: name: Sasaki, R.
name: Nii, Y.
name: Iguchi, Y.
name: Onose, Y.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have investigated surface acoustic wave propagation in Ni/LiNbO$_3$ hybrid devices. We have found the absorption and phase velocity are dependent on the sign of wave vector in a device, which indicates the nonreciprocal propagation characteristic of systems with time reversal and spatial inversion simultaneously broken symmetries. The nonreciprocity is reversed by the 180$^\circ$ rotation of magnetic field. Nonreciprocity seems largely dependent on the shape of ferromagnetic Ni film. The origin of these observations is ascribed to film shape dependent magnetoelastic coupling.
description: 12 pages, 6 figures
Enhancement of incoherent bremsstrahlung in proton-nucleus scattering in the $Δ$-resonance energy region
Creators: name: Maydanyuk, Sergei P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We investigate emission of the bremsstrahlung photons in the scattering of protons off nuclei at the $Δ$-resonance energy region. Including properties of $Δ$-resonance in the nucleus-target to the bremsstrahlung model, we find the following. (1) Ratio between incoherent emission and coherent emission is about $10^{6}$--$10^{7}$ for $p + \isotope[197]{Au}$ (without $Δ$-resonance) at energy of proton beam $E_{\rm p}$ of 190~MeV, where the calculated full bremsstrahlung spectrum is in good agreement with experimental data. This confirms importance of incoherent processes in study of $Δ$-resonances in this reaction, which have never been studied yet. We estimate coherent and incoherent contributions, electric and magnetic contributions, full bremsstrahlung spectra for the scattering of protons on the \isotope[12]{C}, \isotope[40]{Ca}, \isotope[208]{Pb} nuclei at $E_{\rm p}=800$~MeV, we find conditions for the most intensive bremsstrahlung emission. (2) Transition $p\,N \to Δ^{+} N$ in the nucleus-target reinforces emission of bremsstrahlung photons in that reaction at $E_{\rm p}=800$~MeV. Difference between the spectra for normal nuclei and nuclei with included $Δ$-resonance is larger for more light nuclei, but the spectra are larger for heavier nuclei. (3) Taking into account shortly lived state of $Δ$-resonance, we find that the spectrum with $Δ$-resonance in the nucleus-target is essentially larger in the high energy photon region than the spectrum without this $Δ$-resonance (corresponding calculations for \isotope[12][Δ]{C}, \isotope[40][Δ]{Ca}, \isotope[208][Δ]{Pb} in comparison with \isotope[12]{C}, \isotope[40]{Ca}, \isotope[208]{Pb} are provided). Such an aspect is recommended for registration of $Δ$-resonances in nuclei in possible future experiments.
description: 24 pages, 9 captured figures, 2 appendixes
Squeezing quadrature rotation in the acoustic band via optomechanics
Creators: name: Guccione, Giovanni
name: Slatyer, Harry J.
name: Carvalho, André R. R.
name: Buchler, Ben C.
name: Lam, Ping Koy
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We examine the use of optomechanically-generated squeezing to obtain a sensitivity enhancement for interferometers in the gravitational-wave band. The intrinsic dispersion characteristics of optomechanical squeezing around the mechanical frequency are able to produce squeezing at different quadratures over the spectrum, a feature required by gravitational-wave interferometers to beat the standard quantum limit over an extended frequency range. Under realistic assumptions we show that the amount of available squeezing and the intrinsic quadrature rotation may provide, compared to similar amounts of fixed-quadrature squeezing, a detection advantage. A significant challenge for this scheme, however, is the amount of excess noise that is generated in the unsqueezed quadrature at frequencies near the mechanical resonance.
description: 10 pages, 2 figures
X-ray Polarization at the Crossroads
Creators: name: Heyl, Jeremy
name: Caiazzo, Ilaria
name: González-Caniulef, Denis
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We argue that measurements of X-ray polarization using the recently launched Imaging X-ray Polarimetry Explorer will answer many open questions about magnetars in particular the physical state of their surfaces, whether vacuum birefringence exists, and the nature of the hard X-ray emission from these objects. We outline the capabilities of the instrument, specific models and the results of simulations for the magnetar 4U~0142+61.
description: 12 pages, 7 figures, Neutron Star Astrophysics at the Crossroads: Magnetars and the Multimessenger Revolution, Proceedings IAU Symposium No. 363, 2022, E. Troja & M. Baring, eds
On distinct residues of factorials
Creators: name: Andrejić, Vladica
name: Tatarevic, Milos
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We investigate the existence of primes $p > 5$ for which the residues of $2!$, $3!$, \dots, $(p-1)!$ modulo $p$ are all distinct. We describe the connection between this problem and Kurepa's left factorial function, and report that there are no such primes less than $10^{11}$.
Force-free and twisted, relativistic neutron star magnetospheres
Creators: name: Ntotsikas, Dimitris
name: Gourgouliatos, Konstantinos N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In this poster we present the structure of an axisymmetric, force-free magnetosphere of a twisted, aligned rotating dipole within a corotating plasma-filled magnetosphere. We explore various profiles for the twist. We find that as the current increases more field lines cross the light cylinder leading to more efficient spin-down. Moreover, we notice that the twist cannot be increased indefinitely and after a finite twist of about $π/2$ the field becomes approximately radial. This could have implications for torque variations of magnetars related to outbursts.
description: 2 pages, 2 figures, IAU SYMPOSIUM International Astronomical Union Proceedings Series
THz generation using a reflective stair-step echelon
Creators: name: Ofori-Okai, Benjamin K.
name: Sivarajah, Prasahnt
name: Huang, W. Ronny
name: Nelson, Keith A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a novel method for THz generation in lithium niobate using a reflective stair-step echelon structure. The echelon produces a discretely tilted pulse front with less angular dispersion compared to a high groove-density grating. The THz output was characterized using both a 1-lens and 3-lens imaging system to set the tilt angle at room and cryogenic temperatures. Using broadband 800 nm pulses with a pulse energy of 0.95 mJ and a pulse duration of 70 fs (24 nm FWHM bandwidth, 39 fs transform limited width), we produced THz pulses with field strengths as high as 500 kV/cm and pulse energies as high as 3.1 $μ$J. The highest conversion efficiency we obtained was 0.33%. In addition, we find that the echelon is easily implemented into an experimental setup for quick alignment and optimization.
description: 19 pages, 4 figures