cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Частотно-временной анализ нестационарных сигналов методами вейвлет-преобразования и оконного преобразования Фурье
Creators: name: ., Н.В. Астахов – к.т.н., доцент, кафедра «Конструирование и производство радиоаппаратуры», Воронежский государственный технический университет E-mail: kokakoller@gmail.com А.В. Башкиров – д.т.н., доцент, и.о. зав. кафедрой «Конструирование и производство радиоаппаратуры», Воронежский государственный технический университет E-mail: fabi7@mail.ru О.Е. Журилова – аспирант, кафедра «Конструирование и производство радиоаппаратуры», Воронежский государственный технический университет E-mail: Suslovaoe@yandex.ru О.Ю. Макаров – д.т.н., профессор,  кафедра «Конструирование и производство радиоаппаратуры», Воронежский государственный технический университет E-mail: mou@hotbox.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы: Для решения многих задач спектрального анализа сигналов требуется представление сигнала как в частотной, так и во временной областях.
Цель. Рассмотреть частотно-временной анализ нестационарных сигналов методами вейвлет-преобразования и оконного пре-образования Фурье.
Результаты. Проведено моделирование нестационарного сигнала и его частотно-временной анализ в системе компьютерной математики MATLAB.Подробно описан процесс и результаты моделирования, выявлены достоинства и недостатки каждого метода. В методе оконного преобразования Фурье исследовано влияние окон разного размера на представление сигнала в частотно-временной области, в методе вейвлет-преобразования рассмотрено влияние выбора материнского вейвлета на ре-зультаты моделирования.
Практическая значимость. Предложенная методика хорошо подходит для эффективного обнаружения различных особен-ностей сигналов и выявления кратковременных и глобальных закономерностей.
Space-time correlations in urban sprawl
Creators: name: Hernando, A.
name: Hernando, R.
name: Plastino, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Applications (stat.AP)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Understanding demographic and migrational patterns constitutes a great challenge. Millions of individual decisions, motivated by economic, political, demographic, rational, and/or emotional reasons underlie the high complexity of demographic dynamics. Significant advances in quantitatively understanding such complexity have been registered in recent years, as those involving the growth of cities [Bettencourt LMA, Lobo J, Helbing D, Kuehnert C, West GB (2007) Growth,. Innovation, Scaling, and the Pace of Life in Cities, Proc Natl Acad Sci USA 104 (17) 7301-7306] but many fundamental issues still defy comprehension. We present here compelling empirical evidence of a high level of regularity regarding time and spatial correlations in urban sprawl, unraveling patterns about the inertia in the growth of cities and their interaction with each other. By using one of the world's most exhaustive extant demographic data basis ---that of the Spanish Government's Institute INE, with records covering 111 years and (in 2011) 45 million people, distributed amongst more than 8000 population nuclei--- we show that the inertia of city growth has a characteristic time of 15 years, and its interaction with the growth of other cities has a characteristic distance of 70 km. Distance is shown to be the main factor that entangles two cities (a 60% of total correlations). We present a mathematical model for population flows that i) reproduces all these regularities and ii) can be used to predict the population-evolution of cities. The power of our current social theories is thereby enhanced.
An Experimental and Numerical Study of Long Wave Run-Up on a Plane Beach
Creators: name: Drähne, Ulrike
name: Goseberg, Nils
name: Vater, Stefan
name: Beisiegel, Nicole
name: Behrens, Jörn
Publisher: name: Basel : MDPI AG
Year: 2016
Subjects: subject: discontinuous Galerkin model
subject: long wave
subject: pump-driven wave generator
subject: shallow water equations
subject: tsunami run-up
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: This research is to facilitate the current understanding of long wave dynamics at coasts and during on-land propagation, experimental and numerical approaches are compared against existing analytical expressions for the long wave run-up. Leading depression sinusoidal waves are chosen to model these dynamics. The experimental study was conducted using a new pump-driven wave generator and the numerical experiments were carried out with a one-dimensional discontinuous Galerkin non-linear shallow water model. The numerical model is able to accurately reproduce the run-up elevation and velocities predicted by the theoretical expressions. Depending on the surf similarity of the generated waves and due to imperfections of the experimental wave generation, riding waves are observed in the experimental results. These artifacts can also be confirmed in the numerical study when the data from the physical experiments is assimilated. Qualitatively, scale effects associated with the experimental setting are discussed. Finally, shoreline velocities, run-up and run-down are determined and shown to largely agree with analytical predictions.
Robust Distant Entanglement Generation Using Coherent Multiphoton Scattering
Creators: name: Chan, Ching-Kit
name: Sham, L. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We describe a protocol to entangle two qubits at a distance by using resonance fluorescence. The scheme makes use of the postselection of large and distinguishable fluorescence signals corresponding to entangled and unentangled qubit states and has the merits of both high success probability and high entanglement fidelity owing to the multiphoton nature. Our result shows that the entanglement generation is robust against photon fluctuations in the fluorescence signals for a wide range of driving fields. We also demonstrate that this new protocol has an average entanglement duration within the decoherence time of corresponding qubit systems, based on current experimental photon efficiency.
description: 6 pages, 4 figures
Refining the tiered approach for mapping and assessing ecosystem services at the local scale: A case study in a rural landscape in Northern Germany
Creators: name: Perennes, Marie
name: Campagne, C. Sylvie
name: Müller, Felix
name: Roche, Philip
name: Burkhard, Benjamin
Publisher: name: Basel : MDPI AG
Year: 2020
Subjects: subject: Ecosystem condition indicators
subject: ES matrix assessment
subject: Statistical map comparison
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin

description: Spatially explicit assessments of ecosystem services (ES) potentials are a key component in supporting a sustainable land use management. The ES matrix method is a commonly used approach as it allows for a comparably fast, comprehensible and accessible ES assessment. As it is often based on land use/land cover data (LULC) with no spatial variability, a main critique is that the results fail to assess spatial variability at landscape levels, which limits the reliability of the outputs for spatial planning applications. By using the case study area of Bornhöved in northern Germany, we analyzed three assessment methods that combine expert judgments, LULC data with different resolutions and ecosystem condition indicators, in order to find the required resolution and data for ES assessment and mapping at a local scale. To quantify map discrepancies, we used the structural similarity index (SSIM) and analyzed the differences in local mean, variance and covariance between the maps. We found that using different spatial resolutions led to a relatively small difference in the outcomes, in which regulation and maintenance services are more affected than the other services categories. For most regulation, maintenance and cultural ES, our results indicate that assessments based only on LULC proxies are not suitable for a local quantitative assessment of ES, as they cannot sufficiently cover the spatial heterogeneity of ES capacities that arise from different ecosystem conditions.
Non-equilibrium fluctuations in frictional granular motor: experiments and kinetic theory
Creators: name: Gnoli, Andrea
name: Sarracino, Alessandro
name: Petri, Alberto
name: Puglisi, Andrea
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We report the study of a new experimental granular Brownian motor, inspired to the one published in [Phys. Rev. Lett. 104, 248001 (2010)], but different in some ingredients. As in that previous work, the motor is constituted by a rotating pawl whose surfaces break the rotation-inversion symmetry through alternated patches of different inelasticity, immersed in a gas of granular particles. The main novelty of our experimental setup is in the orientation of the main axis, which is parallel to the (vertical) direction of shaking of the granular fluid, guaranteeing an isotropic distribution for the velocities of colliding grains, characterized by a variance $v_0^2$. We also keep the granular system diluted, in order to compare with Boltzmann-equation-based kinetic theory. In agreement with theory, we observe for the first time the crucial role of Coulomb friction which induces two main regimes: (i) rare collisions (RC), with an average drift $\ < ω\ > \sim v_0^3$, and (ii) frequent collisions (FC), with $\ < ω\ > \sim v_0$. We also study the fluctuations of the angle spanned in a large time interval, $Δθ$, which in the FC regime is proportional to the work done upon the motor. We observe that the Fluctuation Relation is satisfied with a slope which weakly depends on the relative collision frequency.
description: 7 pages, 6 figures
A hybrid approach to extraction and refinement of building footprints from airborne lidar data
Creators: name: Huang, Hai
name: Sester, Monika
Publisher: name: Göttingen : Copernicus GmbH
Year: 2011
Subjects: subject: Urban
subject: Building
subject: FOS: Civil engineering
subject: Extraction
subject: LIDAR
subject: Point Cloud
subject: Three-dimensional
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: This work presents a combined bottom-up and top-down approach to extraction and refinement of building footprints from airborne LIDAR data. Building footprints are interesting for many applications in urban planning. The cadastral maps, however, may be limited for certain areas or not be updated frequently. Airborne laser scanning data is therefore considered by many people in the last decade as an important alternative data for change detection and update of building footprints. Laser scanning data of city scenes, however, often shows noise and incompleteness because of, e.g., the clutter by vegetation and the reflection of windows/waterlogged depressions on the roof. Results of the bottom-up detection may thus be limited to incomplete or irregular polygons. We employ 3D Hough transform to detect the building points. An improved joint multiple-plane detection scheme is proposed to find and label the laser points on multiple roof facets synchronously. The bottom-up processing provides not only a rough point segmentation but also additional 3D information, e.g., roof heights and horizontal ridges. Using these as priors, a top-down reconstruction is conducted via generative models. We consider the building footprint as an assembly of regular primitives. A statistical search by means of Reversible Jump Markov Chain Monte Carlo and Maximum A Posteriori estimation is implemented to find the optimal configuration of the footprint. By these means a robust and plausible reconstruction is guaranteed. First results on point clouds with various resolutions show the potential of this approach.
The effect of ionization on the populations of excited levels of C IV and C V in tokamak edge plasmas
Creators: name: Lawson, K D
name: Coffey, I H
name: Aggarwal, K M
name: Keenan, F P
name: Contributors, JET-EFDA
Publisher: name: arXiv
Year: 2013
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The main populating and depopulating mechanisms of the excited energy levels of ions in plasmas with densities <1023-1024 m-3 are electron collisional excitation from the ion's ground state and radiative decay, respectively, with the majority of the electron population being in the ground state of the ionization stage. Electron collisional ionization is predominately expected to take place from one ground state to that of the next higher ionization stage. However, the question arises as to whether, in some cases, ionization can also affect the excited level populations. This would apply particularly to those cases involving transient events such as impurity influxes in a laboratory plasma. An analysis of the importance of ionization in populating the excited levels of ions in plasmas typical of those found in the edge of tokamaks is undertaken for the C IV and C V ionization stages. The emphasis is on those energy levels giving rise to transitions of most use for diagnostic purposes. Carbon is chosen since it is an important contaminant of JET plasmas; it was the dominant low Z impurity before the installation of the ITER-like wall and is still present in the plasma after its installation. Direct electron collisional ionization both from and to excited levels is considered. Distorted-wave Flexible Atomic Code calculations are performed to generate the required ionization cross sections, due to a lack of atomic data in the literature.
description: 29 pages, 5 figures. This is an author-created, un-copyedited version of an article accepted for publication in Journal of Physics B. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it
Context-based urban terrain reconstruction from uav-videos for geoinformation applications
Creators: name: Bulatov, D.
name: Solbrig, P.
name: Gross, H.
name: Wernerus, P.
name: Repasi, E.
name: Heipke, Christian
Publisher: name: Göttingen : Copernicus GmbH
Year: 2011
Subjects: subject: UAVs
subject: Photogrammetry
subject: Sensor Orientation
subject: Urban Terrain Reconstruction
subject: images
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Urban terrain reconstruction has many applications in areas of civil engineering, urban planning, surveillance and defense research. Therefore the needs of covering ad-hoc demand and performing a close-range urban terrain reconstruction with miniaturized and relatively inexpensive sensor platforms are constantly growing. Using (miniaturized) unmanned aerial vehicles, (M) UAVs, represents one of the most attractive alternatives to conventional large-scale aerial imagery. We cover in this paper a four-step procedure of obtaining georeferenced 3D urban models from video sequences. The four steps of the procedure - orientation, dense reconstruction, urban terrain modeling and geo-referencing - are robust, straight-forward, and nearly fully-automatic. The two last steps - namely, urban terrain modeling from almost-nadir videos and co-registration of models - represent the main contribution of this work and will therefore be covered with more detail. The essential substeps of the third step include digital terrain model (DTM) extraction, segregation of buildings from vegetation, as well as instantiation of building and tree models. The last step is subdivided into quasi-intrasensorial registration of Euclidean reconstructions and intersensorial registration with a geo-referenced orthophoto. Finally, we present reconstruction results from a real data-set and outline ideas for future work.
A spatially stabilized TDG based finite element framework for modeling biofilm growth with a multi-dimensional multi-species continuum biofilm model
Creators: name: Feng, D.
name: Neuweiler, Insa
name: Nackenhorst, Udo
Publisher: name: Heidelberg : Springer Verlag
Year: 2017
Subjects: subject: Advection-reaction equations
subject: Finite element
subject: Numerical dissipation and dispersion
subject: TDG-SUPG
subject: TDG-FIC
subject: Advection
subject: Biofilms
subject: Boundary layers
subject: Calculations
subject: Continuum mechanics
subject: Dispersions
subject: Galerkin methods
subject: Interfaces (materials)
subject: Discontinuous galerkin
subject: Multi-species biofilms
subject: Numerical dissipation
subject: Reaction equations
subject: Sensitivity studies
subject: Stabilization techniques
subject: Streamlineupwind / petrov-galerkin methods (SUPG)
subject: Time-dependent advection
subject: Finite element method
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: We consider a model for biofilm growth in the continuum mechanics framework, where the growth of different components of biomass is governed by a time dependent advection–reaction equation. The recently developed time-discontinuous Galerkin (TDG) method combined with two different stabilization techniques, namely the Streamline Upwind Petrov Galerkin (SUPG) method and the finite increment calculus (FIC) method, are discussed as solution strategies for a multi-dimensional multi-species biofilm growth model. The biofilm interface in the model is described by a convective movement following a potential flow coupled to the reaction inside of the biofilm. Growth limiting substrates diffuse through a boundary layer on top of the biofilm interface. A rolling ball method is applied to obtain a boundary layer of constant height. We compare different measures of the numerical dissipation and dispersion of the simulation results in particular for those with non-trivial patterns. By using these measures, a comparative study of the TDG–SUPG and TDG–FIC schemes as well as sensitivity studies on the time step size, the spatial element size and temporal accuracy are presented. The final publication is available at Springer via http://dx.doi.org/10.1007/s00466-017-1388-1
Focused wave generation in laboratory flumes over uneven bottom
Creators: name: Fernández, Hernan
name: Venkatachalam, Sriram
name: Schimmels, Stefan
name: Budzik, Mariusz
name: Oumeraci, Hocine
Publisher: name: Reston : American Society of Civil Engineers (ASCE)
Year: 2014
Subjects: subject: Extreme waves
subject: Nonlinear waves
subject: Numerical wave tank
subject: Self correcting method
subject: Tsunami generation
subject: Wave focusing
subject: Coastal engineering
subject: Control nonlinearities
subject: Focusing
subject: Tanks (containers)
subject: Numerical wave tanks
subject: Numerical methods
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: A proper design of offshore and coastal structures requires further knowledge about extreme wave events. Such waves are highly nonlinear and may occur unexpectedly due to diverse reasons. One of these reasons is wave-wave interaction and the wave focusing technique represents one option to generate extreme wave events in the laboratory. The underlying mechanism is the superimposition and phasing of wave components at a predefined location. To date, most of the existing methods to propagate target wave profile backwards to the position of the wave generator apply linear wave theory. The problem is that the generated waves with different frequencies generate new components which do not satisfy the linear dispersion relation. As a result, small changes in the wave board control signal generally induce large and random shifts in the resulting focused wave. This means that iterations are necessary to get the required wave profile at the correct position in the flume. In this study, a Self Correcting Method (SCM) is applied to optimize the control signal of the wave maker in a Numerical Wave Tank (NWT). The nonlinearities are included in the control signal and accurate wave focusing is obtained irrespective of the prevailing seabed topography (horizontal or sloping) and type of structure (reflective or absorbing). The performance of the proposed SCM is numerically investigated for a wide variety of scenarios and validated by scale model tests in the Large Wave Flume (Großer Wellen Kanal, GWK), Hannover, Germany. The strengths and limitations of the proposed SCM are discussed, including the potential for further developments.
Robust model reconstruction for intelligent health monitoring of tunnel structures
Creators: name: Xu, Xiangyang
name: Yang, Hao
Publisher: name: Thousand Oaks : SAGE Publications Inc.
Year: 2020
Subjects: subject: AI-based
subject: B-spline approximation
subject: health monitoring
subject: robust modeling
subject: TLS
subject: Agricultural robots
subject: Efficiency
subject: Intelligent robots
subject: Interpolation
subject: Mean square error
subject: Robotics
subject: Thallium
subject: Artificial intelligence technologies
subject: Automatic health monitoring
subject: Comparative advantage
subject: Health monitoring
subject: Intelligent processing
subject: Robust modeling
subject: Root mean square errors
subject: Structural health monitoring
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Advanced robotic systems will encounter a rapid breakthrough opportunity and become increasingly important, especially with the aid of the accelerated development of artificial intelligence technology. Nowadays, advanced robotic systems are widely used in various fields. However, the development of artificial intelligence-based robot systems for structural health monitoring of tunnels needs to be further investigated, especially for data modeling and intelligent processing for noises. This research focuses on integrated B-spline approximation with a nonparametric rank method and reveals its advantages of high efficiency and noise resistance for the automatic health monitoring of tunnel structures. Furthermore, the root-mean-square error and time consumption of the rank-based and Huber’s M-estimator methods are compared based on various profiles. The results imply that the rank-based method to model point cloud data has a comparative advantage in the monitoring of tunnel, as well as the large-area structures, which requires high degrees of efficiency and robustness.
Emulating lateral gravity wave propagation in a global chemistry-climate model (EMAC v2.55.2) through horizontal flux redistribution
Creators: name: Eichinger, Roland
name: Rhode, Sebastian
name: Garny, Hella
name: Preusse, Peter
name: Pisoft, Petr
name: Kuchar, Aleš
name: Jöckel, Patrick
name: Kerkweg, Astrid
name: Kern, Bastian
Publisher: name: Forschungzentrum Jülich
Year: 2023

description: doi:10.5194/egusphere-2023-270
Validation of an interactive map assessing the potential spread of galba truncatula as intermediate host of Fasciola hepatica in Switzerland
Creators: name: Baggenstos, Rhea
name: Dahinden, Tobias
name: Torgerson, Paul R.
name: Bär, Hansaruedi
name: Rapsch, Christina
name: Knubben-Schweizer, Gabriela
Publisher: name: Pavia : Page Press Publications
Year: 2016
Subjects: subject: Fasciola hepatica
subject: Galba truncatula
subject: Interactive map
subject: Risk modelling
subject: Switzerland
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin

description: Bovine fasciolosis, caused by Fasciola hepatica, is widespread in Switzerland. The risk regions were modelled in 2008 by an interactive map, showing the monthly potential risk of transmission of F. hepatica in Switzerland. As this map is based on a mathematical model, the aim of the present study was to evaluate the interactive map by means of a field survey taking different data sources into account. It was found that the interactive map has a sensitivity of 40.7-88.9%, a specificity of 11.4-18.8%, a positive predictive value of 26.7-51.4%, and a negative predictive value of 13.1-83.6%, depending on the source of the data. In conclusion, the grid of the interactive map (100 x 100 m) does not reflect enough detail and the underlying model of the interactive map is lacking transmission data.
The Unsung Mothers of Négritude: An Examination of the Efforts of Women Behind the Movement
Creators: name: Sheffield, Emily C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: As a result of endemic racism and sexism, the contributions of people of color and women to historical movements remain largely underreported and overlooked despite extensive evidence of their involvement. This reality is particularly striking for women and non-binary individuals of color as individuals who exist at the intersection of these discriminations. In this paper, I examine three black woman scholars – Paulette Nardal, Jane Nardal, and Suzanne Césaire – whose contributions to the Négritude movement, and to the spread of the ideology of black consciousness throughout the African Diaspora, have been undermined by many scholars of Africana studies and overshadowed by the male scholars of their time.
Testing Diagnostics of Nuclear Activity and Star Formation in Galaxies at z>1
Creators: name: Trump, Jonathan R.
name: Konidaris, Nicholas P.
name: Barro, Guillermo
name: Koo, David C.
name: Kocevski, Dale D.
name: Juneau, Stephanie
name: Weiner, Benjamin J.
name: Faber, S. M.
name: McLean, Ian S.
name: Yan, Renbin
name: Perez-Gonzalez, Pablo G.
name: Villar, Victor
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present some of the first science data with the new Keck/MOSFIRE instrument to test the effectiveness of different AGN/SF diagnostics at z~1.5. MOSFIRE spectra were obtained in three H-band multi-slit masks in the GOODS-S field, resulting in two hour exposures of 36 emission-line galaxies. We compare X-ray data with the traditional emission-line ratio diagnostics and the alternative mass-excitation and color-excitation diagrams, combining new MOSFIRE infrared data with previous HST/WFC3 infrared spectra (from the 3D-HST survey) and multiwavelength photometry. We demonstrate that a high [OIII]/Hb ratio is insufficient as an AGN indicator at z>1. For the four X-ray detected galaxies, the classic diagnostics ([OIII]/Hb vs. [NII]/Ha and [SII]/Ha) remain consistent with X-ray AGN/SF classification. The X-ray data also suggest that "composite" galaxies (with intermediate AGN/SF classification) host bona-fide AGNs. Nearly 2/3 of the z~1.5 emission-line galaxies have nuclear activity detected by either X-rays or the classic diagnostics. Compared to the X-ray and line ratio classifications, the mass-excitation method remains effective at z>1, but we show that the color-excitation method requires a new calibration to successfully identify AGNs at these redshifts.
description: 7 pages, 4 figures. Accepted to ApJ Letters
Validation of the EGSIEM GRACE gravity fields using GNSS coordinate timeseries and in-situ ocean bottom pressure records
Creators: name: Chen, Qiang
name: Poropat, Lea
name: Zhang, Liangjing
name: Dobslaw, Henryk
name: Weigelt, Matthias
name: Van Dam, Tonie
Publisher: name: Basel : MDPI AG
Year: 2018
Subjects: subject: Combined solutions
subject: EGSIEM
subject: GNSS time series
subject: GRACE
subject: In-situ OBP records
subject: Validation
subject: Data handling
subject: Geodetic satellites
subject: Global positioning system
subject: Indium compounds
subject: Oceanography
subject: FOS: Earth and related environmental sciences
subject: Risk management
subject: Signal to noise ratio
subject: Time series
subject: Combined solution
subject: Coordinate time series
subject: Global geopotential models
subject: Global Navigation Satellite Systems
subject: Gravity Recovery and Climate Experiment missions
subject: In situ processing
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Over the 15 years of the Gravity Recovery and Climate Experiment (GRACE) mission, various data processing approaches were developed to derive time-series of global gravity fields based on sensor observations acquired from the two spacecrafts. In this paper, we compare GRACE-based mass anomalies provided by various processing groups against Global Navigation Satellite System (GNSS) station coordinate time-series and in-situ observations of ocean bottom pressure. In addition to the conventional GRACE-based global geopotential models from the main processing centers, we focus particularly on combined gravity field solutions generated within the Horizon2020 project European Gravity Service for Improved Emergency Management (EGSIEM). Although two validation techniques are fully independent from each other, it is demonstrated that they confirm each other to a large extent. Through the validation, we show that the EGSIEM combined long-term monthly solutions are comparable to CSR RL05 and ITSG2016, and better than the other three considered GRACE monthly solutions AIUB RL02, GFZ RL05a, and JPL RL05.1. Depending on the GNSS products, up to 25.6% mean Weighted Root-Mean-Square (WRMS) reduction is obtained when comparing GRACE to the ITRF2014 residuals over 236 GNSS stations. In addition, we also observe remarkable agreement at the annual period between GNSS and GRACE with up to 73% median WRMS reduction when comparing GRACE to the 312 EGSIEM-reprocessed GNSS time series. While the correspondence between GRACE and ocean bottom pressure data is overall much smaller due to lower signal to noise ratio over the oceans than over the continents, up to 50% agreement is found between them in some regions. The results fully confirm the conclusions found using GNSS.
title: Phantastische Zeiten?! Frieden- Umwelt- Gerechtigkeit. Ausstellung und Ideenwerkstatt 11. April- 31. Juli 1994 Eppeleinsaal der Nürnberger Burg
Creators: name: Z., J.
Publisher: name: University Library Heidelberg
Year: 2016

description: [nicht vorhanden / not available]
Aplysia japonica G. B. Sowerby II 1869
Creators: name: Golestani, Haleh
name: Crocetta, Fabio
name: Padula, Vinicius
name: Camacho-García, Yolanda
name: Langeneck, Joachim
name: Poursanidis, Dimitris
name: Pola, Marta
name: Yokeş, M. Baki
name: Cervera, Juan Lucas
name: Jung, Dae-Wui
name: Gosliner, Terrence M.
name: Araya, Juan Francisco
name: Hooker, Yuri
name: Schrödl, Michael
name: Valdés, Ángel
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Aplysiida
Aplysiidae
Aplysia
Aplysia japonica

description: APLYSIA JAPONICA G. B. SOWERBY II, 1869
(FIGS 4I–J, 4P–Q, 18–21)
description: Published as part of Golestani, Haleh, Crocetta, Fabio, Padula, Vinicius, Camacho-García, Yolanda, Langeneck, Joachim, Poursanidis, Dimitris, Pola, Marta, Yokeş, M. Baki, Cervera, Juan Lucas, Jung, Dae-Wui, Gosliner, Terrence M., Araya, Juan Francisco, Hooker, Yuri, Schrödl, Michael & Valdés, Ángel, 2019, The little Aplysia coming of age: from one species to a complex of species complexes in Aplysia parvula (Mollusca: Gastropoda: Heterobranchia), pp. 279-330 in Zoological Journal of the Linnean Society 187 on page 314
Urban Challenges, Urban Futures: Digital and/ or sustainable into the urban nature?
Creators: name: Bork-Hueffer, Tabea
name: Bunchuay-Peth, Simon
Publisher: name: Research Group Transient Spaces and Societies
Year: 2023
Subjects: digitisation
urban green spaces
urban development

description: Blog Podcastserie der Vertiefungsrichtung des Masterstudiums Geographie der Universität Innsbruck
The Promise of Peace: UNSC 2098 and 2147 and the Protection of Congolese Civilians
Creators: name: Allyn, Danielle N.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: The Democratic Republic of the Congo (hereafter, the DRC, DR Congo, or “Congo”) remains home to one of the largest humanitarian crises since the Second World War. As the largest and longest-running UN peacekeeping force in the organization’s history, the UN Stabilization Mission in the DR Congo (MONUSCO) boasts a civilian protection record characterized by limited success. During the late 1990s, a series of peacekeeping failures inspired a series of scholarly critiques and UN reforms. International political will coalesced around the Responsibility to Protect (R2P). MONUSCO represents a test case for the operationalization of R2P. This paper analyzes UN Security Council Resolutions 2098 and 2147 and their impact on MONUSCO’s capacity to protect civilians in eastern DRC. Drawing on interviews with UN personnel and Congolese civilians, the paper constructs a case for the limited operational success of UNSC 2098 on measures of civilian protection.
Chaotic dynamics with Maxima
Creators: name: Morante, A.
name: Vallejo, J. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 37D45, 70-04, 70Kxx

description: We present an introduction to the study of chaos in discrete and continuous dynamical systems using the CAS Maxima. These notes are intended to cover the standard topics and techniques: discrete and continuous logistic equation to model growth population, staircase plots, bifurcation diagrams and chaos transition, nonlinear continuous dynamics (Lorentz system and Duffing oscillator), Lyapunov exponents, Poincaré sections, fractal dimension and strange attractors. The distinctive feature here is the use of free software with just one ingredient: the CAS Maxima. It is cross-platform and have extensive on-line documentation.
description: To appear in Electronic Journal of Mathematics and Technology
Using interactive web tools in environmental planning to improve communication about sustainable development
Creators: name: Krätzig, Sebastian
name: Warren-Kretzschmar, Bartlett
Publisher: name: Basel : MDPI AG
Year: 2014
Subjects: subject: Communication
subject: Environmental planning
subject: Internet
subject: Local sustainability
subject: Participatory planning
subject: Social media
subject: Visualization
subject: Web tools
subject: decision making
subject: information technology
subject: land management
subject: livestock farming
subject: public attitude
subject: social network
subject: sustainable development
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::000 | Informatik, Informationswissenschaft, allgemeine Werke
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Public involvement in the landscape planning process is an essential opportunity to communicate the goals and objectives of a sustainable planning. However, it is also important to accommodate citizen's attitudes and perceptions of sustainability on a local or regional scale in the decision-making process. This involvement can be supported by interactive information, discussion, and learning opportunities. This article examines how communication in the context of environmental issues can be supported by modern web tools, social media, and new visualization approaches. Furthermore, the potential of social media to support communication about sustainability on a local scale and the prerequisites for its use in the planning process are discussed. Using a case study about citizens' response to the development of intensive livestock farming in rural setting, we examine what the perception of sustainability on local scale could mean for citizens. Another case study about interactive landscape planning illustrates how such tools can promote communication about environmental issues and local sustainability. Using a framework for the use of social media, we suggest different application levels of social media in participatory planning. Finally, the opportunities to support sustainable decisions with landscape visualization in environmental planning and decision-making issues are discussed.
In-Plane Magnetic Field Tolerance of a Dispersive Aluminum Nanobridge SQUID Magnetometer
Creators: name: Antler, N.
name: Levenson-Falk, E. M.
name: Naik, R.
name: Sun, Y. -D.
name: Narla, A.
name: Vijay, R.
name: Siddiqi, I.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We characterize the flux sensitivity of a dispersive 3D aluminum nanobridge SQUID magnetometer as a function of applied in-plane magnetic field. In zero field, we observe an effective flux noise of 17 n$Φ_0$/Hz$^{1/2}$ with 25 MHz of bandwidth. Flux noise increased by less than a factor of three with parallel magnetic fields up to 61 mT. Operation in higher fields may be possible by decreasing the dimensions of the shunt capacitor in the magnetometer circuit. These devices are thus well suited for observing high-speed dynamics in nanoscale magnets, even in the presence of moderate bias magnetic fields.
title: Зависимость среднеквадратических ошибок пеленгования от частоты и от направления прихода сигнала при размещении четырехэлементной антенной решетки на беспилотном носителе
Creators: name: ., С.А. Антипов – д.ф.-м.н., профессор, кафедра «Общая физика радиоэлектронного профиля», Воронежский государственный технический университет К.А. Разинкин – д.т.н., профессор, кафедра «Системы информационной безопасности», Воронежский государственный технический университет E-mail: kostyr@mail.ru А.С. Самодуров – к.т.н., доцент, кафедра «Конструирование и производство радиоаппаратуры», Воронежский государственный технический университет E-mail: unaxel2000@mail.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы. Основной проблемой, возникающей при разработке антенных решеток мобильного базирования, является проблема учета влияния корпуса носителя на характеристики такой решетки. При анализе такого рода модели це-лесообразно использовать однородную теорию дифракции.
Цель. Рассчитать зависимости СКО пеленга от частоты и от азимутального угла прихода волны, усредненные по всем анали-зируемым углам прихода волны.
Результаты. Рассчитаны зависимости значения СКО от азимутального угла прихода волны для случаев нахождения решетки на носителе и в свободном пространстве, усредненные для всех анализируемых частот сигнала.
Практическая значимость. Для использования антенной решетки совместно с носителем можно рекомендовать к применению более узкий диапазон рабочих частот 50…1300 МГц, СКО в котором не превышает 2°.
The influences of cement hydration and temperature on the thixotropy of cement paste
Creators: name: Link, Julian
name: Sowoidnich, Thomas
name: Pfitzner, Christopher
name: Gil-Diaz, Teba
name: Heberling, Frank
name: Lützenkirchen, Johannes
name: Schäfer, Thorsten
name: Ludwig, Horst-Michael
name: Haist, Michael
Publisher: name: Basel : MDPI AG
Year: 2020
Subjects: subject: Cement paste
subject: Hydration
subject: Opus fluidum futurum
subject: Rheology
subject: Thixotropy
subject: Calcium silicate
subject: Cements
subject: Hydrated lime
subject: Lime
subject: Shear flow
subject: Shear stress
subject: Silicate minerals
subject: Viscosity
subject: Yield stress
subject: Calcium silicate hydrate
subject: Carrier liquid
subject: Cement hydration
subject: Degree of hydration
subject: Dynamic viscosities
subject: Ion composition
subject: Rheological parameter
subject: Rheological property
subject: Structural properties
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: The rheological properties of fresh cement paste are highly influenced by a large number of parameters, among which the most important factors are the applied shear stress, and the shear history, the age of the sample and the temperature. The effects of these parameters on the yield stress (designated as structural limit stress in this work), the viscosity and the structural recovery rate (i.e., the change in dynamic viscosity with time at rest) were studied. In parallel, the changes in ion composition of the carrier liquid, mineral phase content and granulometry were investigated. The results reveal that all investigated rheological parameters exhibit an approximated bi-linear trend with respect to the degree of hydration, with a period of quasi-constant properties until a degree of hydration of approximately 0.07, followed by a non-linear increase. This increase could be attributed to the formation of calcium hydroxide (CH) and calcium-silicate-hydrate (C-S-H) via calorimetry results. With regard to the effect of the shear history of the sample on the rheological properties, the structural limit stress showed a minor dependency on the shear history immediately after the end of shearing, which, however, vanished within the first minute at rest. The same is true for the structural recovery rate. The presented results give detailed insights into the influences of hydration and shear on the rheological properties-especially the thixotropy-of fresh cement pastes.
Intramolecular interactions modulate RNA binding and LLPS of hnRNP A1
Creators: name: Sperotto, Luca
name: Kang, Hyun-Seo
name: Flli, Isabella C.
name: Sattler, Michael
Publisher: name: Zenodo
Year: 2022

description: This poster was presented at ICMRBS 2022 (21st-25th August 2022).
title: Проблемы взаимодействия и совместимости систем «умный дом» с периферийными устройствами
Creators: name: ., А.В. Башкиров – д.т.н., доцент, и.о. зав. кафедрой «Конструирование и производство радиоаппаратуры», Воронежский государственный технический университет E-mail: fabi7@mail.ru С.Ю. Белецкая – профессор, кафедра «Системы автоматизированного проектирования и информационные системы», Воронежский государственный технический университет Я.В. Скитский – бакалавр, Воронежский государственный технический университет E-mail: nauchrab@mail.ru А.Э. Привалова – бакалавр, Воронежский государственный технический университет E-mail: nauchrab@mail.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы. В целях осуществления контроля над компонентами системы «умный дом» используют различные протоколы связи, которые определяют способы соединения и обмена данными.
Цель. Рассмотреть особенности подключения устройств лидирующих систем, преимущества и недостатки различных типов связи и выявить наиболее перспективные проекты для создания и совершенствования систем «умный дом».
Результаты. Представлены наиболее распространенные системы «умный дом» и соответствующие способы управления над совокупностью периферийных устройств.
Практическая значимость. Это направление развития поможет в дальнейшем создавать более сложные сценарии и позволит достигнуть еще большего уровня автоматизации.
Effect of microtubule-associated protein tau in dynamics of single-headed motor proteins KIF1A
Creators: name: Sparacino, J.
name: Farías, M. G.
name: Lamberti, P. W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Intracellular transport based on molecular motors and its regulation are crucial to the functioning of cells. Filamentary tracks of the cells are abundantly decorated with non-motile microtubule-associated proteins, such as tau. Motivated by experiments on kinesin-tau interactions [Dixit et al. Science 319, 1086 (2008)] we developed a stochastic model of interacting single-headed motor proteins KIF1A that also takes into account the interactions between motor proteins and tau molecules. Our model reproduce experimental observations and predicts significant effects of tau on bound time and run length which suggest an important role of tau in regulation of kinesin-based transport.
description: 5 pages, 5 figures
title: Стохастическое итеративное декодирование на факторных графах
Creators: name: ., А.В. Башкиров – д.т.н., доцент, и.о. зав. кафедрой «Конструирование и производство радиоаппаратуры», Воронежский государственный технический университет E-mail: fabi7@mail.ru В.М. Питолин – д.т.н., профессор, кафедра «Электроника», Воронежский государственный технический университет E-mail: pitol@mail.ru И.В. Свиридова – ст. преподаватель, кафедра «Конструирование и производство радиоаппаратуры», Воронежский государственный технический университет М.В. Хорошайлова – ассистент, кафедра «Конструирование и производство радиоаппаратуры», Воронежский государственный технический университет E-mail: pmv2205@mail.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы. Одним из подходов к декодированию турбокодов является создание аналогового декодера путем представления метрик внутреннего декодера в виде непрерывных аналоговых напряжений или токов, а также использование аналоговых схем для выполнения итераций декодирования в непрерывном времени.
Цель. Представить архитектуру итеративного декодирования на основе стохастических вычислительных элементов.
Результаты. Результаты моделирования для кода (7,4) Хемминга показывают потери только на 0,5 дБ относительно декодера, основанного на распространении веры. Критическим путем декодера является одиночный вентиль XOR, позволяющий ему работать на очень высокой скорости.
Практическая значимость. Предлагаемый способ обеспечивает цифровое, независимое от технологии, альтернативное ана-логовому декодированию для приложений цифровой связи с высокой пропускной способностью и низким энергопотреблением.
From Predicting Solar Activity to Forecasting Space Weather: Practical Examples of Research-to-Operations and Operations-to-Research
Creators: name: Steenburgh, R. A.
name: Biesecker, D. A.
name: Millward, G. H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The successful transition of research to operations (R2O) and operations to research (O2R) requires, above all, interaction between the two communities. We explore the role that close interaction and ongoing communication played in the successful fielding of three separate developments: an observation platform, a numerical model, and a visualization and specification tool. Additionally, we will examine how these three pieces came together to revolutionize interplanetary coronal mass ejection (ICME) arrival forecasts. A discussion of the importance of education and training in ensuring a positive outcome from R2O activity follows. We describe efforts by the meteorological community to make research results more accessible to forecasters and the applicability of these efforts to the transfer of space-weather research.We end with a forecaster "wish list" for R2O transitions. Ongoing, two-way communication between the research and operations communities is the thread connecting it all.
description: 18 pages, 3 figures, Solar Physics in press