cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Smoothing procedures for inertial survey systems of local level type
Creators: name: Gonthier, Michel
Publisher: name: University of Calgary
Year: 1984
Subjects: subject: TA 549 G64 1986
subject: Surveying - Data processing
subject: Digital filters (Mathematics)

description: Bibliography: p. 108-110.
description: The research that is reported in this thesis investigates the suitability and accuracy of smoothing procedures for a Local Level Inertial Survey System (LLIS). The study concentrates on the comparison of optimal and empirical smoothing procedures, taking Litton's Autosurveyor as a typical example of the latter. The analysis is carried out in four stages. In the first stage, a set of differential equations describing the navigation system error behavior is derived. The second stage discusses the implementation of Kalman filtering. The third stage considers the implementation of the basic equations of optimal and empirical smoothing. In the fourth stage, accuracy figures of optimal smoothing and empirical smoothing for different traverse configurations are derived using digital simulations of a LLIS. The results of this research show that empirical smoothing is an attractive method of processing filtered data. A comparison of accuracy figures between optimal and empirical smoothing algorithms derived from simulated data has shown no significant differences. The simple equations of empirical smoothing eliminate the need of storing a large amount of data, avoid the lengthy computations needed for optimal smoothing, and can be implemented on a small computer.
Sampling binary sparse coding QUBO models using a spiking neuromorphic processor
Creators: name: Henke, Kyle
name: Pelofske, Elijah
name: Hahn, Georg
name: Kenyon, Garrett T.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Emerging Technologies (cs.ET)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We consider the problem of computing a sparse binary representation of an image. To be precise, given an image and an overcomplete, non-orthonormal basis, we aim to find a sparse binary vector indicating the minimal set of basis vectors that when added together best reconstruct the given input. We formulate this problem with an $L_2$ loss on the reconstruction error, and an $L_0$ (or, equivalently, an $L_1$) loss on the binary vector enforcing sparsity. This yields a so-called Quadratic Unconstrained Binary Optimization (QUBO) problem, whose solution is generally NP-hard to find. The contribution of this work is twofold. First, the method of unsupervised and unnormalized dictionary feature learning for a desired sparsity level to best match the data is presented. Second, the binary sparse coding problem is then solved on the Loihi 1 neuromorphic chip by the use of stochastic networks of neurons to traverse the non-convex energy landscape. The solutions are benchmarked against the classical heuristic simulated annealing. We demonstrate neuromorphic computing is suitable for sampling low energy solutions of binary sparse coding QUBO models, and although Loihi 1 is capable of sampling very sparse solutions of the QUBO models, there needs to be improvement in the implementation in order to be competitive with simulated annealing.
Anomalous momentum dependence of the multiband electronic structure of FeSe_1-xTe_x superconductors induced by atomic disorder
Creators: name: Sudayama, Takaaki
name: Wakisaka, Yuki
name: Ootsuki, Daiki
name: Mizokawa, Takashi
name: Saini, Naurang L.
name: Arita, Masashi
name: Namatame, Hirofumi
name: Taniguchi, Masaki
name: Noji, Takashi
name: Koike, Yoji
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: When periodicity of crystal is disturbed by atomic disorder, its electronic state becomes inhomogeneous and band dispersion is obscured. In case of Fe-based superconductors, disorder of chalcogen/pnictogen height causes disorder of Fe 3d level splitting. Here, we report an angle-resolved photoemission spectroscopy study on FeSe_1-xTe_x with the chalcogen height disorder, showing that the disorder affects the Fe 3d band dispersions in an orbital-selective way instead of simple obscuring effect. The reverse of the Fe 3d level splitting due to the chalcogen height difference causes the splitting of the hole band with Fe 3d x^2-y^2 character around the Gamma point.
description: 5 pages, 4 figures
The domain of noun tone rules in Lam Nso
Creators: name: Grebe, Karl H.
Publisher: name: University of Calgary
Year: 1984

description: Bibliography: p. 131-133.
description: This study concerns the domain in which lexical tones interact with each other. By lexical tones are meant the inherent tones for which morphemes are specified in the lexicon before being inserted into larger structures. The study focuses primarily on the interaction of the noun root tone with the tones of morphemes that precede or follow the root either within the word or across word boundaries. Lam Nso noun roots are monosyllabic. The most basic form of the noun consists of a root and one or two optional prefixes. The tones on these morphemes do not interact with each other as long as each tone remains in its original segmental domain. Lexical tones only interact when a tone that does not have a segmental domain (i.e. a floating tone) enters into the segmental domain of another tone. Floating tones may originate from the underlying lexical representation where tones may be unassociated or from phonological processes that rob a tone of its segmental domain. Within one segmental domain tones may either fuse or be compounded depending on the type of boundary the floating tone crosses to enter the domain of a segment tone. Tone fusion occurs across formative (morpheme) boundaries while tone compounding occurs across word boundaries. Tone fusion results in two distinct tones becoming one tone while compounding adds tones sequentially without significant changes. Thus, by fusion low and high become mid but by compounding they form the contour, low-high. The study demonstrates that phonological boundaries play a role not only in regulating phonological processes but also in regulating tonological ones.
Relativistic stochastic mechanics I: Langevin equation from observer's perspective
Creators: name: Cai, Yifan
name: Wang, Tao
name: Zhao, Liu
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Two different versions of relativistic Langevin equation in curved spacetime background are constructed, both are manifestly general covariant. It is argued that, from the observer's point of view, the version which takes the proper time of the Brownian particle as evolution parameter contains some conceptual issues, while the one which makes use of the proper time of the observer is more physically sound. The two versions of the relativistic Langevin equation are connected by a reparametrization scheme. In spite of the issues contained in the first version of the relativistic Langevin equation, it still permits to extract the physical probability distributions of the Brownian particles, as is shown by Monte Carlo simulation in the example case of Brownian motion in $(1+1)$-dimensional Minkowski spacetime.
description: 23 pages. Title change and minor corrections
TGFβ signalling is required to maintain pluripotency of human naïve pluripotent stem cells
Creators: name: Osnato, Anna
name: Brown, Stephanie
name: Krueger, Christel
name: Andrews, Simon
name: Collier, Amanda J
name: Nakanoh, Shota
name: Quiroga Londoño, Mariana
name: Wesley, Brandon T
name: Muraro, Daniele
name: Brumm, A Sophie
name: Niakan, Kathy K
name: Vallier, Ludovic
name: Ortmann, Daniel
name: Rugg-Gunn, Peter J
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Research Article
Stem Cells and Regenerative Medicine
pluripotent stem cells
embryonic stem cells
gene regulation
Human

description: Funder: Gates Cambridge Trust; FundRef: http://dx.doi.org/10.13039/501100005370
description: Funder: Cambridge Hospitals National Institute for Health Research Biomedical Research Center
description: The signalling pathways that maintain primed human pluripotent stem cells (hPSCs) have been well characterised, revealing a critical role for TGFβ/Activin/Nodal signalling. In contrast, the signalling requirements of naive human pluripotency have not been fully established. Here, we demonstrate that TGFβ signalling is required to maintain naive hPSCs. The downstream effector proteins – SMAD2/3 – bind common sites in naive and primed hPSCs, including shared pluripotency genes. In naive hPSCs, SMAD2/3 additionally bind to active regulatory regions near to naive pluripotency genes. Inhibiting TGFβ signalling in naive hPSCs causes the downregulation of SMAD2/3-target genes and pluripotency exit. Single-cell analyses reveal that naive and primed hPSCs follow different transcriptional trajectories after inhibition of TGFβ signalling. Primed hPSCs differentiate into neuroectoderm cells, whereas naive hPSCs transition into trophectoderm. These results establish that there is a continuum for TGFβ pathway function in human pluripotency spanning a developmental window from naive to primed states.
Parametric Compositional Data Types
Creators: name: Bahr, Patrick
name: Hvitved, Tom
Publisher: name: arXiv
Year: 2012
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: In previous work we have illustrated the benefits that compositional data types (CDTs) offer for implementing languages and in general for dealing with abstract syntax trees (ASTs). Based on Swierstra's data types á la carte, CDTs are implemented as a Haskell library that enables the definition of recursive data types and functions on them in a modular and extendable fashion. Although CDTs provide a powerful tool for analysing and manipulating ASTs, they lack a convenient representation of variable binders. In this paper we remedy this deficiency by combining the framework of CDTs with Chlipala's parametric higher-order abstract syntax (PHOAS). We show how a generalisation from functors to difunctors enables us to capture PHOAS while still maintaining the features of the original implementation of CDTs, in particular its modularity. Unlike previous approaches, we avoid so-called exotic terms without resorting to abstract types: this is crucial when we want to perform transformations on CDTs that inspect the recursively computed CDTs, e.g. constant folding.
description: In Proceedings MSFP 2012, arXiv:1202.2407
Using artificial-intelligence tools to make LaTeX content accessible to blind readers
Creators: name: Kortemeyer, Gerd
Publisher: name: arXiv
Year: 2023
Subjects: subject: Physics Education (physics.ed-ph)
subject: Digital Libraries (cs.DL)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Screen-reader software enables blind users to access large segments of electronic content, particularly if accessibility standards are followed. Unfortunately, this is not true for much of the content written in physics, mathematics, and other STEM-disciplines, due to the strong reliance on mathematical symbols and expressions, which screen-reader software generally fails to process correctly. A large portion of such content is based on source documents written in LaTeX, which are rendered to PDF or HTML for online distribution. Unfortunately, the resulting PDF documents are essentially inaccessible, and the HTML documents greatly vary in accessibility, since their rendering using standard tools is cumbersome at best. The paper explores the possibility of generating standards-compliant, accessible HTML from LaTeX sources using Large Language Models. It is found that the resulting documents are highly accessible, with possible complications occurring when the artificial intelligence tool starts to interpret the content.
САБЗИ ИЛДИЗМЕВАЛАРИНИ САҚЛАШНИНГ ДАВОМИЙЛИГИ ВА УСУЛЛАРИ
Creators: name: Худайберганов, Худайберган
Publisher: name: Zenodo
Year: 2024

description: мақолада сабзи илдизмеваларини сақлашнинг давомийлиги ва усуллари ўрганиш мақсадида хорижий олимлар томонидан олиб борилган тадқиқот натижалари чуқур илмий таҳлил қилинган ҳолда келтирилган.
Two international postdocs at the IUNR : interview with Iwona Dembicz and Jinghui Zhang
Creators: name: Dembicz, Iwona
name: Zhang, Jing Hui
name: Dengler, Jürgen
name: Babbi, Manuel
name: Gehler, Jamyra
Publisher: name: ZHAW Zürcher Hochschule für Angewandte Wissenschaften
Year: 2020
Subjects: 378: Hochschulbildung

description: PhD students and Postdocs are generally rather rare at the IUNR compared to full universities where these two groups account for a big fraction of the staff. In the academic year 2019/20 two Postdocs have joined the Vegetation Ecology Research Group, Dr. Iwona Dembicz from Poland for 9 ½ months and Dr. Jinghui Zhang from China for a whole year. We have interviewed them to shed a light on why they specifically selected the IUNR for their research stay and how they experienced the institute, the region and Switzerland in general.
Generation Z und die Studienwahl - eine Analyse in Bezug auf Informationsstrategien und Entscheidungshilfen bei Gymnasiastinnen und Gymnasiasten des Kantons St. Gallen
Creators: name: Caviezel, Anina
Publisher: name: ZHAW Zürcher Hochschule für Angewandte Wissenschaften
Year: 2016
Subjects: 158: Angewandte Psychologie
371: Schulen und schulische Tätigkeiten

description: Mittelschülerinnen und Mittelschüler müssen sich seit jeher während ihrer Mittelschulzeit mit der Studien- und Ausbildungswahl beziehungsweise mit der Frage nach einer Anschlusslösung nach der Matura beschäftigen. Verändert hat sich dabei über die Jahre nebst dem durch den „Zeitgeist“ geprägten Vorstellungen, Werthaltungen und Wünschen vor allem die Abrufbarkeit und Präsenz von Informationen. Die Generation, die sich derzeit mit der Studien- und Ausbildungswahl beschäftigt und der wir auch im Beratungsalltag begegnen, sind Vertreterinnen und Vertreter der sogenannten Generation Z. Die Generation Z ist mit flächendeckendem Internet, Tablets und Smartphones aufgewachsen. Die digitale Welt und alle damit verbundenen Fortschritte und Errungenschaften ist für sie ganz selbstverständlich Teil ihres Lebens. In Bezug auf das Finden einer Anschlusslösung nach der Matura stellt sich die Frage, welche Informationsstrategien und Entscheidungshilfen diese Generation während des Prozesses der Studien- und Ausbildungswahl in Anspruch nimmt. Da es uns als Studien- und Laufbahnberatungsstelle wichtig ist, ein zielgruppengerechtes Beratungs- und Informationsangebot zu schaffen, ist die vorliegende Studie dieser Frage nachgegangen. Mit Hilfe einer quantitativen Umfrage bei ehemaligen Maturandinnen und Maturanden der Kantonsschule am Burggraben St.Gallen, die auf Grund ihrer Geburtsjahrgänge als Vertreterinnen und Vertreter der Generation Z gelten, wurde analysiert, welche Informationsquellen und Entscheidungshilfen genutzt wurden und wie hilfreich sie diese einschätzten.
Stable phantom-divide crossing in two scalar models with matter
Creators: name: Saitou, Rio
name: Nojiri, Shin'ichi
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct cosmological models with two scalar fields, which has the structure as in the ghost condensation model or k-essence model. The models can describe the stable phantom crossing, which should be contrasted with one scalar tensor models, where the infinite instability occurs at the crossing the phantom divide. We give a general formulation of the reconstruction in terms of the e-foldings N by including the matter although in the previous two scalar models, which are extensions of the scalar tensor model, it was difficult to give a formulation of the reconstruction when we include matters. In the formulation of the reconstruction, we start with a model with some arbitrary functions, and find the functions which generates the history in the expansion of the universe. We also give general arguments for the stabilities of the models and the reconstructed solution. The viability of a model is also investigated by comparing the observational data.
description: 12 pages, 1 figure
FollowNet: A Comprehensive Benchmark for Car-Following Behavior Modeling
Creators: name: Chen, Xianda
name: Zhu, Meixin
name: Chen, Kehua
name: Wang, Pengqin
name: Lu, Hongliang
name: Zhong, Hui
name: Han, Xu
name: Wang, Yinhai
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Car-following is a control process in which a following vehicle (FV) adjusts its acceleration to keep a safe distance from the lead vehicle (LV). Recently, there has been a booming of data-driven models that enable more accurate modeling of car-following through real-world driving datasets. Although there are several public datasets available, their formats are not always consistent, making it challenging to determine the state-of-the-art models and how well a new model performs compared to existing ones. In contrast, research fields such as image recognition and object detection have benchmark datasets like ImageNet, Microsoft COCO, and KITTI. To address this gap and promote the development of microscopic traffic flow modeling, we establish a public benchmark dataset for car-following behavior modeling. The benchmark consists of more than 80K car-following events extracted from five public driving datasets using the same criteria. These events cover diverse situations including different road types, various weather conditions, and mixed traffic flows with autonomous vehicles. Moreover, to give an overview of current progress in car-following modeling, we implemented and tested representative baseline models with the benchmark. Results show that the deep deterministic policy gradient (DDPG) based model performs competitively with a lower MSE for spacing compared to traditional intelligent driver model (IDM) and Gazis-Herman-Rothery (GHR) models, and a smaller collision rate compared to fully connected neural network (NN) and long short-term memory (LSTM) models in most datasets. The established benchmark will provide researchers with consistent data formats and metrics for cross-comparing different car-following models, promoting the development of more accurate models. We open-source our dataset and implementation code in https://github.com/HKUST-DRIVE-AI-LAB/FollowNet.
Umwelt im Herzen, Gebäude im Fokus : die neue Vertiefung Erneuerbare Energien und Ökotechnologie
Creators: name: Schönborn, Andreas
Publisher: name: ZHAW Zürcher Hochschule für Angewandte Wissenschaften
Year: 2016
Subjects: Erneuerbare Energie
Oekotechnologie
EÖ
Vertiefung
333.7: Landflächen, Naturerholungsgebiete

description: Die Vertiefung NREE (Nachwachsende Rohstoffe und erneuerbare Energien) wird umgestaltet und heisst ab Herbst 2016 "Erneuerbare Energien und Oekotechnologien". Ziel ist eine Anpassung an den Arbeitsmarkt der Zukunft. Ein Schwerpunkt liegt auf der Integration von erneuerbaren Energien und Ökotechnologien im Gebäudebereich, der starkes Entwicklungspotenzial hat.
VLBI multi-epoch water maser observations toward massive protostars
Creators: name: Torrelles, José M.
name: Gómez, José F.
name: Patel, Nimesh A.
name: Curiel, Salvador
name: Anglada, Guillem
name: Estalella, Robert
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: VLBI multi-epoch water maser observations are a powerful tool to study the gas very close to the central engine responsible for the phenomena associated with the early evolution of massive protostars. In this paper we present a summary of the main observational results obtained toward the massive star-forming regions of Cepheus A and W75N. These observations revealed unexpected phenomena in the earliest stages of evolution of massive objects (e.g., non-collimated "short-lived" pulsed ejections in different massive protostars), and provided new insights in the study of the dynamic scenario of the formation of high-mass stars (e.g., simul- taneous presence of a jet and wide-angle outflow in the massive object Cep A HW2, similar to what is observed in low-mass protostars). In addition, with these observations it has been possible to identify new, previously unseen centers of high-mass star formation through outflow activity.
description: Submitted to Proceedings of IAU Symposium No. 287, Cosmic Masers- from OH to Ho
Wassergas-Konvertierungsreaktion in mikrostrukturierten Reaktoren unter hohen Drücken für CO-reiches Synthesegas
Creators: name: Piermartini, Paolo
Publisher: name: Karlsruhe
Year: 2015
Subjects: Wassergas-Konvertierungsreaktion
Mikrostrukturierten Reaktoren

description: Ein mikrostrukturierter Laborreaktor wurde für Untersuchungen zur Anhebung des H2/CO Verhältnisses im Synthesegas biogenen Ursprungs mittels einer Wassergas-Konvertierungsreaktion bei hohen Drücken und Temperaturen entwickelt und eingesetzt. Katalysatorschichten wurden hergestellt und charakterisiert. Darüber hinaus wurden Katalysatorpulverproben zur Integration für ein Mikrofestbett hergestellt. Die chemische Umsetzung wurde zwischen 400 und 600°C und bis 45 bar (g) untersucht.
Ultracold molecular collisions in magnetic fields: Efficient incorporation of hyperfine structure in the total rotational angular momentum representation
Creators: name: Tscherbul, Timur V.
name: D'Incao, Jose P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The effects of hyperfine structure on ultracold molecular collisions in external fields are largely unexplored due to major computational challenges associated with rapidly proliferating hyperfine and rotational channels coupled by highly anisotropic intermolecular interactions. We explore a new basis set for incorporating the effects of hyperfine structure and external magnetic fields in quantum scattering calculations on ultracold molecular collisions. The basis is composed of direct products of the eigenfunctions of the total {\it rotational} angular momentum (TRAM) of the collision complex $J_r$ and the electron/nuclear spin basis functions of the collision partners. The separation of the rotational and spin degrees of freedom ensures rigorous conservation of $J_r$ even in the presence of external magnetic fields and isotropic hyperfine interactions. The resulting block-diagonal structure of the scattering Hamiltonian enables coupled-channel calculations on highly anisotropic atom-molecule and molecule-molecule collisions to be performed independently for each value of $J_r$, with an added advantage of eliminating the unphysical states present in the total angular momentum representation. We illustrate the efficiency of the TRAM basis by calculating state-to-state cross sections for ultracold He + YbF collisions in a magnetic field. The size of the TRAM basis required to reach numerical convergence is 8 times smaller than that of the uncoupled basis used previously, providing a computational gain of three orders of magnitude. The TRAM basis is therefore well suited for rigorous quantum scattering calculations on ultracold molecular collisions in the presence of hyperfine interactions and external magnetic fields.
Exploring Accessibility of Public Transit under Travel Time Uncertainty Using Smart Card Data
Creators: name: Senousi, Ahmad M.
name: Liu, Xintao
name: Zhang, Junwei
name: Huang, Jianwei
Publisher: name: Zenodo
Year: 2019
Subjects: Accessibility
Public Transit
Uncertainty
Smart Card Data
SCD

description: The paper submission "Exploring Accessibility of Public Transit under Travel Time Uncertainty Using Smart Card Data" was accepted for presentation at the 3rd LIESMARS International Graduate Workshop on Geo-Informatics on 26-28 June 2019, at Wuhan, China.
Mapping data acquisition and processing report, Cruise EX-13-04 Leg 1, exploration, NE canyons, July 8 - 25, 2013.
Creators: name: Lobecker, Elizabeth
name: Elliott, Kelley
name: Gallant, Laura T.
name: Jacklyn, James
name: Conway, Richard Earl
name: Raymond, Annemieke
Publisher: name: NOAA Office of Ocean Exploration and Research.
Year: 2015
Subjects: subject: Okeanos Explorer (Ship). Cruise (EX1304L1 : 2013)
subject: Multibeam mapping--Atlantic Coast (New England)--Data processing.
subject: Underwater exploration--Atlantic Coast (New England)--Remote sensing.

description: EX-13-04 Leg 1 operations commenced on July 8, 2013 in North Kingstown, RI and concluded on July 25, 2013 in New York, NY. Combined 24-hour multibeam mapping, remotely operated vehicle (ROV) and CTD/rosette operations were conducted, and included telepresence enabled shore-side participation.The 2013 Northeast U.S. Canyons Expedition, comprised of two legs, focused primarily on Northeast Canyons and inter-canyon areas.. The May 2011 NOAA Workshop on Systematic Telepresence-Enabled Exploration in the Atlantic Basin (Summary Report available at http://explore.noaa.gov/sites/OER/Documents/atl-basin-workshop-summary-oct2011.pdflast accessed 1/13/14) identified canyons and seamounts as priority areas for systematic ocean exploration. Operating areas were further refined based on input from other NOAA programs and the ocean management community. The mapping activities occurred in vicinity of Alvin, Atlantis and Hydrographer canyons, landslide features near Veatch canyon identified by USGS prior to the cruise, susepected sites of New England seep sites based on previous mapping data. EX-13-04 Legs 1 and 2 efforts built on the 2012 Atlantic Canyons Undersea Mapping Expeditions (ACUMEN). The ACUMEN expeditions have so far included seven cruises conducted by NOAA Ships Okeanos Explorer, Ferdinand Hassler and Henry B. Bigelow in 2012 and 2013. These cruises gathered baseline information on deep water canyons off the northeastern U.S. seaboard, mapping along the continental shelf and slope from Virginia to the northeastern boundary of the U.S. Exclusive Economic Zone (EEZ). These mapping operations provided the basis for preliminary ROV dive target selection during EX-13-04 Legs 1 and 2.
Kuramoto model with coupling through an external medium
Creators: name: Schwab, David J.
name: Plunk, Gabriel G.
name: Mehta, Pankaj
Publisher: name: arXiv
Year: 2011
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Synchronization of coupled oscillators is often described using the Kuramoto model. Here we study a generalization of the Kuramoto model where oscillators communicate with each other through an external medium. This generalized model exhibits interesting new phenomena such as bistability between synchronization and incoherence and a qualitatively new form of synchronization where the external medium exhibits small-amplitude oscillations. We conclude by discussing the relationship of the model to other variations of the Kuramoto model including the Kuramoto model with a bimodal frequency distribution and the Millennium Bridge problem.
description: 9 pages, 3 figures
Thai Space Activities under Existing International and Domestic Legal Instruments
Creators: name: Inquiry Official Assistant (Formerly Called Corruption Suppression Officer) At Office Of National Anti-Corruption Commission (Thailand)
Publisher: name: สำนักวิชานิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง
Year: 2562
Subjects: Tort
Tortious liability
Outer space

description: วารสารนิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง, 2, 1, 75-118
Update on the Pyramid Scheme
Creators: name: Banks, Tom
name: Torres, T. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We summarize recent work in which we attempt to make a consistent model of LHC physics, from the Pyramid Scheme. The models share much with the NMSSM, in particular, enhanced tree level contributions to the Higgs mass and a preference for small tan β. There are 3 different singlet fields, and a new strongly coupled gauge theory, so the constraints of perturbative unification are quite different. We outline our general approach to the model, which contains a Kahler potential for three of the low energy fields, which is hard to calculate. Detailed calculations, based on approximations to the Kahler potential, will be presented in a future publication.
description: LaTeX 2e/ 9 pages
An Ensemble Machine Learning Approach for Tropical Cyclone Detection Using ERA5 Reanalysis Data
Creators: name: Accarino, Gabriele
name: Donno, Davide
name: Immorlano, Francesco
name: Elia, Donatello
name: Aloisio, Giovanni
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Tropical Cyclones (TCs) are counted among the most destructive phenomena that can be found in nature. Every year, globally an average of 90 TCs occur over tropical waters, and global warming is making them stronger, larger and more destructive. The accurate detection and tracking of such phenomena have become a relevant and interesting area of research in weather and climate science. Traditionally, TCs have been identified in large climate datasets through the use of deterministic tracking schemes that rely on subjective thresholds. Machine Learning (ML) models can complement deterministic approaches due to their ability to capture the mapping between the input climatic drivers and the geographical position of the TC center from the available data. This study presents a ML ensemble approach for locating TC center coordinates, embedding both TC classification and localization in a single end-to-end learning task. The ensemble combines TC center estimates of different ML models that agree about the presence of a TC in input data. ERA5 reanalysis were used for model training and testing jointly with the International Best Track Archive for Climate Stewardship records. Results showed that the ML approach is well-suited for TC detection providing good generalization capabilities on out of sample data. In particular, it was able to accurately detect lower TC categories than those used for training the models. On top of this, the ensemble approach was able to further improve TC localization performance with respect to single model TC center estimates, demonstrating the good capabilities of the proposed approach.
description: 27 pages, 8 figures, 1 table, submitted to Journal of Advances in Modeling Earth Systems
Robust Optimization, Structure/Control co-design, Distributed Optimization, Monolithic Optimization, Robust Control, Parametric Uncertainty
Creators: name: Sanfedino, Francesco
name: Alazard, Daniel
name: Kiley, Andy
name: Watt, Mark
name: Simplicio, Pedro
name: Ankersen, Finn
Publisher: name: arXiv
Year: 2023
Subjects: subject: Systems and Control (eess.SY)
subject: Numerical Analysis (math.NA)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: This paper presents an end-to-end framework for robust structure/control optimization of an industrial benchmark. When dealing with space structures, a reduction of the spacecraft mass is paramount to minimize the mission cost and maximize the propellant availability. However, a lighter design comes with a bigger structural flexibility and the resulting impact on control performance. Two optimization architectures (distributed and monolithic) are proposed in order to face this issue. In particular the Linear Fractional Transformation (LFT) framework is exploited to formally set the two optimization problems by including parametric uncertainties. Large sets of uncertainties have to be indeed taken into account in spacecraft control design due to the impossibility to completely validate structural models in micro-gravity conditions with on-ground experiments and to the evolution of spacecraft dynamics during the mission (structure degradation and fuel consumption). In particular the Two-Input Two-Output Port (TITOP) multi-body approach is used to build the flexible dynamics in a minimal LFT form. The two proposed optimization algorithms are detailed and their performance are compared on an ESA future exploration mission, the ENVISION benchmark. With both approaches, an important reduction of the mass is obtained by coping with the mission's control performance/stability requirements and a large set of uncertainties.
Detection of per- and polyfluoroalkyl water contaminants with multiplexed 4D microcavities sensor
Creators: name: Saetchnikov, Anton V.
name: Tcherniavskaia, Elina A.
name: Saetchnikov, Vladimir A.
name: Ostendorf, Andreas
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The per- and polyfluoroalkyl substances (PFAS) constitute a group of organofluorine chemicals treated as the emerging pollutants and currently are of particularly acute concern. These compounds have been employed intensively as surfactants over multiple decades and are already to be found in surface and ground waters at amounts sufficient to have an effect on the human health and ecosystems. Because of the carbon-fluorine bonds the PFAS have an extreme environmental persistence and their negative impact accumulates with further production and penetration into the environment. In Germany alone, more than thousands sites have been identified to be contaminated with PFAS and thus timely detection of PFAS residues is becoming a high-priority task. In this paper we report on the high performance optical detection method based on whispering gallery modes microcavities applied for the first time for detection of the PFAS contaminants in aqueous solutions. A self-sensing boosted 4D microcavity fabricated with two-photon polymerization is employed as an individual sensing unit. On example of the multiplexed imaging sensor with multiple hundreds of simultaneously interrogated microcavities we demonstrate the possibility to detect the PFAS chemicals representatives at the level of down to 1 ppb.
Photography and the landscape of travel: western Canada, 1884-1914
Creators: name: Hadley, Margery Tanner, 1951-
Publisher: name: University of Calgary
Year: 1984
Subjects: subject: NR 660 H32 1986
subject: Photography - Landscapes
subject: Photography - Canada, Western - History
subject: Tourist trade - Canada, Western - History
subject: Canadian Pacific Railway

description: Bibliography: p. 133-147.
description: The arrival of the Canadian Pacific Railway ushered in a new era for western Canada--one of settlement, resource exploitation and tourism. It also initiated important developments in Canadian photography, and the new art quickly formed important and lasting relationships with tourism and the western landscape. This study is concerned with these early relationships. Tourism was instrumental to the advancement of western landscape photography. In response to the demand for photographic views, photographers explored new landscapes and developed new technologies. Landscape photography quickly became a fine art and a valuable documentary tool. The role of photography in the promotion of tourism was both a conscious objective of the CPR and a consequence of activity by freelance photographers. Images of the western landscape illustrated publications and lectures, and were widely collected and displayed. Photographic images moved the Canadian landscape into the public consciousness and made visual literacy commonplace. Photography's adaptation to the Canadian West was swift and confident, inspired by traditional landscape values, modern technological advances, tourist interests, CPR corporate goals and the landscape itself. Western landscape photographs from the early railway period are a reflection of tourist, corporate and artist perceptions and interests. Tourism and landscape photography developed interdependently in western Canada. Tourist and corporate demands influenced the images created; the images guided and stimulated tourism. Both photography and tourism developed in response to, and were dependent upon, the western landscape. The impressive western geography inspired man to contemplate, to photograph and to value preserved landscape images.
Prompt J/Psi production at LHC: new evidence for the kt-factorization
Creators: name: Baranov, S. P.
name: Lipatov, A. V.
name: Zotov, N. P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the framework of the kt-factorization approach, the production and polarization of prompt J/Psi mesons in pp collisions at the LHC energy 7 TeV is studied. Both the direct production mechanism as well as feed-down contributions from chic1, chic2 and psi' decays are taken into account. Our consideration is based on the color singlet model supplemented with the off-shell matrix elements for the corresponding partonic subprocesses. The unintegrated gluon densities in a proton are determined using the CCFM evolution equation as well the Kimber-Martin-Ryskin prescription. We compare our numerical predictions with the first experimental data taken by the CMS, ATLAS and LHCb collaborations. The estimation of all polarization parameters which determine J/Psi spin density matrix is performed.
description: 14 pages, 3 figures
Measured Diameters of 2 F-stars in the Beta Pic Moving Group
Creators: name: Simon, M.
name: Schaefer, g. H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report angular diameters of HIP 560 and 21547, two F spectral type pre-main sequence members of the beta Pic Moving Group. We used the East-West 314-m long baseline of the CHARA Array. The measured limb-darkened angular diameters of HIP 560 and 21547 are 0.492+-0.032 and 0.518+-0.009 mas, respectively. The corresponding stellar radii are 2.1 and 1.6 Rsun for HIP 560 and HIP 21547 respectively. These values indicate that the stars are truly young. Analyses using the evolutionary tracks calculated by Siess, Dufour, and Forestini and the tracks of the Yonsei-Yale group yield consistent results. Analyzing the measurements on an angular diameter vs color diagram we find that the ages of the two stars are indistinguishable; their average value is 13+-2 MY. The masses of HIP 560 and 21547 are 1.65+-0.02 and 1.75+-0.05 Msun, respectively. However, analysis of the stellar parameters on a Hertzsprung-Russell Diagram yields ages at least 5 MY older. Both stars are rapid rotators. The discrepancy between the two types of analyses has a natural explanation in gravitational darkening.
Effect of Solar Wind Drag on the Determination of the Properties of Coronal Mass Ejections from Heliospheric Images
Creators: name: Lugaz, N.
name: Kintner, P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Fixed-Φ(FΦ) and Harmonic Mean (HM) fitting methods are two methods to determine the average direction and velocity of coronal mass ejections (CMEs) from time-elongation tracks produced by Heliospheric Imagers (HIs), such as the HIs onboard the STEREO spacecraft. Both methods assume a constant velocity in their descriptions of the time-elongation profiles of CMEs, which are used to fit the observed time-elongation data. Here, we analyze the effect of aerodynamic drag on CMEs propagating through interplanetary space, and how this drag affects the result of the FΦand HM fitting methods. A simple drag model is used to analytically construct time-elongation profiles which are then fitted with the two methods. It is found that higher angles and velocities give rise to greater error in both methods, reaching errors in the direction of propagation of up to 15 deg and 30 deg for the FΦand HM fitting methods, respectively. This is due to the physical accelerations of the CMEs being interpreted as geometrical accelerations by the fitting methods. Because of the geometrical definition of the HM fitting method, it is affected by the acceleration more greatly than the FΦfitting method. Overall, we find that both techniques overestimate the initial (and final) velocity and direction for fast CMEs propagating beyond 90 deg from the Sun-spacecraft line, meaning that arrival times at 1 AU would be predicted early (by up to 12 hours). We also find that the direction and arrival time of a wide and decelerating CME can be better reproduced by the FΦdue to the cancellation of two errors: neglecting the CME width and neglecting the CME deceleration. Overall, the inaccuracies of the two fitting methods are expected to play an important role in the prediction of CME hit and arrival times as we head towards solar maximum and the STEREO spacecraft further move behind the Sun.
description: Solar Physics, Online First, 17 pages
Informationally complete joint measurements on finite quantum systems
Creators: name: Carmeli, Claudio
name: Heinosaari, Teiko
name: Toigo, Alessandro
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that there are informationally complete joint measurements of two conjugated observables on a finite quantum system, meaning that they enable to identify all quantum states from their measurement outcome statistics. We further demonstrate that it is possible to implement a joint observable as a sequential measurement. If we require minimal noise in the joint measurement, then the joint observable is unique. If the dimension d is odd, then this observable is informationally complete. But if d is even, then the joint observable is not informationally complete and one has to allow more noise in order to obtain informational completeness.
Text-reader mismatch: an analysis of four primary grades' reading series for prior knowledge required of native ESL students
Creators: name: Harbeck, Mary Anna, 1941-
Publisher: name: University of Calgary
Year: 1984
Subjects: subject: LB 1573 H277 1986
subject: Reading (Elementary)
subject: Indians of North America
subject: Socially handicapped children - Education - Reading

description: Bibliography: p. 139-145.
A flexible algorithm to offload DAG applications for edge computing
Creators: name: de Queiroz, Gabriel F. C.
name: de Rezende, José F.
name: Barbosa, Valmir C.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Multi-access Edge Computing (MEC) is an enabling technology to leverage new network applications, such as virtual/augmented reality, by providing faster task processing at the network edge. This is done by deploying servers closer to the end users to run the network applications. These applications are often intensive in terms of task processing, memory usage, and communication; thus mobile devices may take a long time or even not be able to run them efficiently. By transferring (offloading) the execution of these applications to the servers at the network edge, it is possible to achieve a lower completion time (makespan) and meet application requirements. However, offloading multiple entire applications to the edge server can overwhelm its hardware and communication channel, as well as underutilize the mobile devices' hardware. In this paper, network applications are modeled as Directed Acyclic Graphs (DAGs) and partitioned into tasks, and only part of these tasks are offloaded to the edge server. This is the DAG application partitioning and offloading problem, which is known to be NP-hard. To approximate its solution, this paper proposes the FlexDO algorithm. FlexDO combines a greedy phase with a permutation phase to find a set of offloading decisions, and then chooses the one that achieves the shortest makespan. FlexDO is compared with a proposal from the literature and two baseline decisions, considering realistic DAG applications extracted from the Alibaba Cluster Trace Program. Results show that FlexDO is consistently only 3.9% to 8.9% above the optimal makespan in all test scenarios, which include different levels of CPU availability, a multi-user case, and different communication channel transmission rates. FlexDO outperforms both baseline solutions by a wide margin, and is three times closer to the optimal makespan than its competitor.
The effect of bias feed profile on spectral properties of noisy Josephson flux flow oscillator
Creators: name: Matrozova, E. A.
name: Pankratov, A. L.
name: Revin, L. S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Computational Physics (physics.comp-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: For creation of a noisy non-stationary spectrometer working in the subTHz frequency range the power and spectral characteristics of a flux flow oscillator (FFO), based on a long Josephson junction are studied. The effect of various bias current profiles on the spectral linewidth of long overlap Josephson junction are investigated and comparison with the inline junction geometry is outlined. It has been demonstrated that the spectral linewidth can be increased by a factor of three with the moderate reduction of emitted power.
description: 10 pages, 7 figures
Вопросы устойчивого развития общества,Выпуск 3 МКСВ 2022
Creators: name: ООО "Институт развития образования и консалтинга"
Publisher: name: ООО "Институт развития образования и консалтинга"
Year: 2022

description: Вопросы устойчивого развития общества,Выпуск 3 МКСВ 2022