cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
X-ray Synthesis Based on Triangular Mesh Models Using GPU-Accelerated Ray Tracing for Multi-modal Breast Image Registration
Creators: name: Maul, J.
name: Said, S.
name: Ruiter, N.
name: Hopp, T.
Publisher: name: Springer Verlag
Year: 2021

description: For image registration of breast MRI and X-ray mammography we apply detailed biomechanical models. Synthesizing X-ray mammograms from these models is an important processing step for optimizing registration parameters and deriving images for multi-modal diagnosis. A fast computation time for creating synthetic images is essential to enable a clinically relevant application. In this paper we present a method to create synthetic X-ray attenuation images with an hardware-optimized ray tracing algorithm on recent graphics processing units’ (GPU) ray tracing (RT) cores. The ray tracing algorithm is able to calculate the attenuation of the X-rays by tracing through a triangular polygon-mesh. We use the Vulkan API, which enables access to RT cores. One frame for a triangle mesh with over 5 million triangles in the mesh and a detector resolution of 1080×1080 can be calculated and transferred to and from the GPU in about 0.76 s on NVidia RTX 2070 Super GPU. Calculation duration of an interactive application without the transfer overhead allows real time application with more than 30 frames per second (fps) even for very large polygon models. The presented method is able to calculate synthetic X-ray images in a short time and has the potential for real-time applications. Also it is the very first implementation using RT cores for this purpose. The toolbox will be available as an open source.
title: Методы снижения пик-фактора в радиовещательных передатчиках стандарта DRM
Creators: name: ., А.Л. Бузов – д.т.н., профессор, ген. директор, АО «Самарское инновационное предприятие радиосистем» E-mail: buzov@siprs.ru К.Ю. Морозов – начальник отдела, АО «Самарское инновационное предприятие радиосистем» E-mail: mky@siprs.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы. Благодаря ряду преимуществ OFDM является привлекательной технологией связи для вещателей. Однако основной проблемой систем с OFDM-модуляцией является высокий пик-фактор, вызывающий сильные нелинейные искажения в радиочастотных узлах оборудования DRM.
Цель. Изучить методы снижения пик-фактора в радиовещательных передатчиках стандарта DRM.
Результаты. Рассмотрены существующие методы снижения пик-фактора в системах с OFDM-модуляцией. Определены критерии выбора подходящих методов с учетом ограничений стандарта DRM. Детально рассмотрены метод ограничения пиков (клиппинг) с пре-фильтрацией и пост-фильтрацией, метод с применением оконной функции, метод активного расширения сигнального созвездия.
Практическая значимость. На основе полученных результатов определены пути дальнейших исследований в области сни-жения пик-фактора в радиовещательных передатчиках стандарта DRM. Проанализирована эффективность данных методов, даны рекомендации по особенностям их применения и выбора их параметров.
Environmental effects of irrigation in arid and semi-arid regions
Creators: name: Fernández-Cirelli, Alicia
name: Arumí, Jose Luis
name: Rivera, Diego
name: Boochs, Peter W.
Publisher: name: Chillan : Instituto de Investigaciones Agropecuarias
Year: 2009
Subjects: subject: Agrochemicals
subject: Irrigation
subject: Micropollutants
subject: Soil quality
subject: Water quality
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin

description: This article reviews the state of the art with respect to the environmental effects of irrigated agriculture on water and soil quality in arid and semi-arid regions on a field scale. Information is scarce and fragmentary. Examples in selected areas of other arid and semi-arid regions in the world clearly show the importance of studying the environmental impact of irrigation practices on water and soil quality. Studies mainly refer to waterlogging and salinization. As regards agrochemicals, fertilizers have been taken into account through nitrate leaching. The impact of micropollutants such as pesticides and heavy metals on water and soil quality is studied mainly by modeling. Pharmaceutical compounds emerge as pollutants when wastewater is used for irrigation without any previous treatment, situation which is now the object of new studies. There is an obvious need to study in-depth knowledge related to appropriate technologies for the use, treatment, and reuse of wastewater which is a valuable resource in arid and semi-arid regions.
Implicit stochastic optimization for deriving reservoir operating rules in semiarid Brazil
Creators: name: Celeste, Alcigeimes B.
name: Curi, Wilson F.
name: Curi, Rosires C.
Publisher: name: Rio de Janeiro : Sociedade Brasileira de Pesquisa Operacional
Year: 2009
Subjects: subject: Implicit stochastic optimization
subject: Reservoir operation
subject: Semiarid regions
subject: Dewey Decimal Classification::600 | Technik::670 | Industrielle und handwerkliche Fertigung

description: This paper deals with the application of Implicit Stochastic Optimization (ISO) to determine monthly operating rules for a reservoir system located in the semiarid Northeast of Brazil. ISO employs a deterministic optimization model to find optimal reservoir allocations under several possible inflow scenarios and later constructs the rules by analyzing the ensemble of these optimal releases. The operating policies provide the monthly reservoir release conditioned on the storage at the beginning of the month and the inflow predicted for the month. In addition to the classical regression analysis, this study establishes the rules by a two-dimensional interpolation strategy. After the rules are identified, they are applied to operate the system under new inflow realizations and show ability to produce policies similar to those obtained by deterministic optimization taking the same inflows as perfect forecasts.
Pesin theory and equilibrium measures on the interval
Creators: name: Dobbs, Neil
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We use Pesin theory to study possible equilibrium measures for piecewise monotone maps of the interval. The maps may have unbounded derivative.
description: 9 pages
Malacogaster Bassi 1834
Creators: name: Kundrata, Robin
name: Bocak, Ladislav
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Drilidae
Malacogaster

description: GENUS MALACOGASTER BASSI, 1834: PL. 99
(FIG. 9F, L, W)
Type species: Malacogaster passerinii Bassi, 1834; by monotypy.
Species included: Eleven species: Malacogaster bassii Lucas, 1870, M. holomelas Peyerimhoff, 1949, M. maculiventris Reitter, 1894, M. nigripes Schaufuss, 1867, M. olcesei Pic, 1951, M. parallelocollis Reitter, 1894, M. passerinii Bassi, 1833, M. rubripes Peyerimhoff, 1949, M. rutllanti Alcaide, 1946, M. theryi Pic, 1951, M. tilloides Wollaston, 1864.
Diagnosis: Malacogaster is recognized by the combination of the following characters: frontoclypeal region short and wide; eyes small, their frontal separation 2.20–2.65 times eye diameter; labrum large, subtrapezoidal; mandible with only small tooth medially at incisor; terminal maxillary and labial palpomeres short, gradually narrowed toward apex, apically obliquely truncate; antenna serrate; pronotum subquadrate to subtrapezoidal, about 1.10– 1.40 times as wide as long, with lateral sides almost straight, usually gradually widened towards posterior margin, posterior margin with small arcuate median emargination; lateral carina short, reaching usually no more than half of pronotal length; prosternum (Fig. 9F) with reduced prosternal process; mesoventrite (Fig. 9L) V-shaped, with only indistinctly defined or shallow mesoventral cavity; elytra usually relatively short, dehiscent, with abdomen surpassing the tip of elytra; surface of elytra uneven, without striae or lines of punctures; abdominal ventrites free (Fig. 9W); sternite IX and tergite X typically elongate, about or more than twice as long as wide; paramere with latero-apical projection on inner side.
D i s t r i b u t i o n: S p a i n (C a n a r y I s l a n d s, I b e r i a n Peninsula, Balearic Islands), Italy (Sardinia, Sicily, Italian Peninsula), northern Africa (Morocco, Algeria, Tunisia, Libya).
description: Published as part of Kundrata, Robin & Bocak, Ladislav, 2019, Molecular phylogeny reveals the gradual evolutionary transition to soft-bodiedness in click-beetles and identifies sub-Saharan Africa as a cradle of diversity for Drilini (Coleoptera: Elateridae), pp. 413-452 in Zoological Journal of the Linnean Society 187 on page 441
Scale setting, sigma terms and the Feynman-Hellman theorem
Creators: name: Shanahan, P. E.
name: Thomas, A. W.
name: Young, R. D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The authors recently presented new values for the octet baryon sigma terms. These were extracted using the Feynman-Hellman theorem from a chiral perturbation theory fit to octet baryon mass data from the PACS-CS collaboration. Of particular interest is the precise determination of the strangeness sigma term $σ_s = 21 \pm 6$ MeV. In this work, we elaborate on the critical effect which the choice of scale setting has on this value. We discuss the prospect that the comparison of direct and 'spectrum' determinations of the sigma terms from the lattice can provide insight not only into scale setting on the lattice, but into QCD itself.
description: 7 pages; parallel talk presented at The 30th International Symposium on Lattice Field Theory - Lattice 2012, June 24-29, 2012 Cairns, Australia
Automatic Hint Generation
Creators: name: Jatowt, Adam
name: Gehrer, Calvin
name: Färber, Michael
Publisher: name: Association for Computing Machinery (ACM)
Year: 2023
Subjects: Hint Generation
Question Answering
Question Generation

description: At times when answers to user questions are readily and easily available (at essentially zero cost), it is important for humans to maintain their knowledge and strong reasoning capabilities. We believe that in many cases providing hints rather than final answers should be sufficient and beneficial for users as it requires thinking and stimulates learning as well as remembering processes. We propose in this paper a novel task of automatic hint generation that supports users in finding the correct answers to their questions without the need of looking the answers up. As the first attempt towards this new task, we design and implement an approach that uses Wikipedia to automatically provide hints for any input question-answer pair. We then evaluate our approach with a user group of 10 persons and demonstrate that the generated hints help users successfully answer more questions than when provided with baseline hints.
Identification and characterization of an RRM-containing, ELAV-like, RNA binding protein in Acinetobacter Baumannii
Creators: name: Pérez-Ràfols, Anna
name: Ciani, Caterina
name: Bonomo, Isabelle
name: Micaelli, Mariachiara
name: Esposito, Alfonso
name: Zucal, Chiara
name: Belli, Romina
name: D'Agostino, Vito Giuseppe
name: Bianconi, Irene
name: Calderone, Vito
name: Cerofolini, Linda
name: Fragai, Marco
name: Provenzani, Alessandro
Publisher: name: Zenodo
Year: 2022

description: This poster was presented at the Chianti Workshop "Opening New Doors in Magnetic Resonance" (19th-24th June 2022).
Comparison of gridded and measured rainfall data for basin-scale hydrological studies
Creators: name: Muñoz, Enrique
name: Álvarez, Cesar
name: Billib, Max
name: Arumí, Jose Luis
name: Rivera, Diego
Publisher: name: Chillan : Instituto de Investigaciones Agropecuarias
Year: 2011
Subjects: subject: Flow simulation
subject: Monthly water balance
subject: Surface water hydrology
subject: Water resources
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin
subject: Dewey Decimal Classification::500 | Naturwissenschaften::551 | Geologie, Hydrologie, Meteorologie

description: Global gridded climatological (GGC) datasets, including precipitation and temperature, are becoming more and more precise, accessible, and common, but the utility of these datasets and their limits for hydrological research are still not well determined. In this paper, we compare the performance of two hydrological models that are identical in structure but built with two different inputs: rainfall from rain gauge stations and from a GGC dataset. The objective is to evaluate the utility of gridded datasets in water resource availability studies mainly for hydroelectric and agricultural purposes. The Andean basin of the Laja River, located in south-central Chile, was chosen for this study. It was based on an 18-yr simulation, and it was concluded that i) with gridded climatological datasets in a monthly water balance model, it is possible to reproduce the behavior of an Andean basin with good goodness-of-fit, but with worse results than when using inputs from rain gauges; ii) the amount of rainfall in gridded datasets in the Andean area of the Laja basin is underestimated and damped, an effect which is transferred to the simulated flows; and iii) regarding the main activities in the Laja basin, global gridded datasets are useful for hydrological studies with agricultural purposes prior to a treatment that considers the orographic effect. On the other hand, these datasets are useless for hydroelectric purposes due to the large underestimation of peak flows obtained during the rainy season.
Estimation of the spatial weighting matrix for regular lattice data—An adaptive lasso approach with cross-sectional resampling
Creators: name: Merk, Miryam S.
name: Otto, Philipp
Publisher: name: Chichester, West Sussex : Wiley
Year: 2022
Subjects: subject: abundance estimation
subject: data set
subject: estimation method
subject: matrix
subject: Monte Carlo analysis
subject: nitrogen dioxide
subject: sampling
subject: vector autoregression
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft::333 | Boden- und Energiewirtschaft::333,7 | Natürliche Ressourcen, Energie und Umwelt
subject: Dewey Decimal Classification::600 | Technik::690 | Hausbau, Bauhandwerk

description: Spatial autoregressive models typically rely on the assumption that the spatial dependence structure is known in advance and is represented by a deterministic spatial weights matrix, although it is unknown in most empirical applications. Thus, we investigate the estimation of sparse spatial dependence structures for regular lattice data. In particular, an adaptive least absolute shrinkage and selection operator (lasso) is used to select and estimate the individual nonzero connections of the spatial weights matrix. To recover the spatial dependence structure, we propose cross-sectional resampling, assuming that the random process is exchangeable. The estimation procedure is based on a two-step approach to circumvent simultaneity issues that typically arise from endogenous spatial autoregressive dependencies. The two-step adaptive lasso approach with cross-sectional resampling is verified using Monte Carlo simulations. Eventually, we apply the procedure to model nitrogen dioxide (Formula presented.) concentrations and show that estimating the spatial dependence structure contrary to using prespecified weights matrices improves the prediction accuracy considerably. © 2021 The Authors. Environmetrics published by John Wiley & Sons, Ltd.
On the Propagation of Reaction Fronts in a Sandy Aquifer Over 20+ Years: Lessons From a Test Site in Northwestern Germany
Creators: name: Houben, Georg J.
name: Post, Vincent E. A.
name: Gröger-Trampe, Jens
name: Pesci, María H.
name: Sültenfuß, Jürgen
Publisher: name: [New York] : Wiley
Year: 2021
Subjects: subject: acidification
subject: lithotrophic denitrification
subject: nitrate
subject: reaction front
subject: Agricultural robots
subject: Aluminum
subject: Aquifers
subject: Catchments
subject: Denitrification
subject: Groundwater flow
subject: Groundwater pollution
subject: Groundwater resources
subject: Hydrogeology
subject: Land use
subject: Nitrates
subject: Nitrogen
subject: Pyrites
subject: Soil testing
subject: Sulfur compounds
subject: Aluminum concentration
subject: Ground water protection
subject: Long term monitoring
subject: Nitrate concentration
subject: Reactive transport modeling
subject: Regional groundwater flow
subject: Temporal variability
subject: Vertical distributions
subject: Recharging (underground waters)
subject: aquifer
subject: byproduct
subject: catchment
subject: denitrification
subject: groundwater
subject: groundwater pollution
subject: land use change
subject: reactive transport
subject: recharge
subject: testing method
subject: vertical distribution
subject: Germany
subject: Groningen [Netherlands]
subject: Haren
subject: Netherlands
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Despite reduction measures, nitrate and aluminum concentrations remain high in aquifers in northwestern Europe. To evaluate the effectiveness of groundwater protection policies, the long-term fate of these contaminants in groundwater needs to be understood. The groundwater catchment of the Haren water works, NW Germany, was characterized hydrogeochemically in the late 1990s, which provides an opportunity to study the solute fronts over a two-decade period and conduct a post-audit of the predicted front movement. Results indicate that, despite a significant reduction of the atmospheric acid loads, the acidification of soil and groundwater at the forest site persists. Removal of sorbed aluminum is required to induce a noticeable improvement, which will take at least several decades. The unexpected appearance of nitrate at the site, caused by a land use change in 1998, highlights the need for long-term monitoring. Core data at the agricultural site show that the denitrification front has moved very little between 1998 and 2017, in accordance with previous forecasts. Denitrification by-products, mainly sulfate and nitrogen, have migrated from the upper into the lower aquifer. A reactive transport model demonstrated how the link between the regional groundwater flow, pyrite oxidation, and the temporal variability of the nitrate concentration in recharge water, as reconstructed from age tracers, result in the observed vertical distribution of sulfate and nitrogen. This study demonstrates how long-term monitoring, aided by model-based data interpretation, can be used to successfully study and predict the fate of contaminants in groundwater. © 2021. The Authors.
title: Структурно-функциональные особенности хориоидеи в норме и при патологии зрительной системы. Методы нейрокомпьютерного моделирования и исследования
Creators: name: ., Г. Р. Кудашева – аспирант, врач-офтальмолог, кафедра офтальмологии, факультет дополнительного профессионального образования, РНИМУ им. Н.И. Пирогова E-mail: guzaliya2905@gmail.com
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы. Актуальность проблемы изучения анатомических, физиологических и патофизиологических особенностей хориоидеи вызвана ее основополагающей ролью во многих процессах функционирования и развития глаза и зрения.
Цель. Анализ передовых исследований по изучению структурно-функциональных особенностей хориоидеи в норме и при патологии зрительной системы, а также описание наиболее оптимальных методов исследования хориоидеи.
Результаты. Представлен обзор литературы по фундаментальным и клиническим исследованиям анатомо-физиологи-ческих свойств хориоидеи и механизмов ее иннервации. Рассмотрены уникальные свойства с позиции влияния на толщину сосудистой оболочки. Приведен анализ оптимальных методов исследования, которые, учитывая объект диагностики, можно отнести к нейрокомпьютерным.
Практическая значимость. Хориоидея играет ключевую роль в патогенезе многих заболеваний сетчатки и сосудистой оболочки, и поэтому разработка новых объективных методов ее исследования является основополагающим моментом для эффективного лечения и прогноза патологии глаза.
title: De ernst van het spel: Willem Frederik Hermans en de ethiek van de persoonlijke mythologie
Creators: name: Rutten, Daan
Publisher: name: Verloren
Year: 2016

description: Hoe kwam de cynische schrijver Willem Frederik Hermans, die vond dat literatuur niet meer mocht zijn dan een amorele ‘persoonlijke mythologie’, tot een ethisch gemotiveerde cultuur- en maatschappijkritiek? Om dit mysterie op te lossen zonder onrecht te doen aan de modernistische paradoxen in Hermans’ oeuvre, destilleerde de auteur een culturele spelfilosofie uit het freudiaanse en post-freudiaanse denken (Jacques Lacan en ​Slavoj Žižek). De lezing voert van Hermans’ biografie en essayistiek naar zijn meest surreële verhalen uit verhalenbundel Paranoia, de politiek en ideologiekritiek in de roman Ik heb altijd gelijk, de collaboratie en het verraad van Christiaan (‘King Kong’) Lindemans en Friedrich Weinreb, en de rol van natuurwetenschap en fotografie in Nooit meer slapen en ‘De blinde fotograaf’.
Advanced representation of tubular joints in jacket models for offshore wind turbine simulation
Creators: name: Dubois, Jan
name: Muskulus, Michael
name: Schaumann, Peter
Publisher: name: Amsterdam : Elsevier
Year: 2013
Subjects: subject: jackets
subject: offshore wind turbine simulation
subject: substructuring
subject: tubular joints
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Jacket substructures for offshore wind turbines show strong potentials in water depths from 25 up to 70m. A review of state-of-practice and enhanced state-of-the-art modeling of offshore wind turbine jackets is conducted regarding detailed joint properties. The state-of-the-art approach takes advantage of an accurate description of the local joint behavior by use of superelements, enabling more accurate load simulations. Studies conducted in the past highlighted both strong benefits as well as shortcomings of this approach, whereas the drawbacks were mainly related to the size of superelements and the application of local wave loading. This work develops a smart sizing for detailed joint models taking into account the loading and location of the jacket joints. A concept of local wave loading is presented as well. Advice on recommendable parameters is given and enables an optimized superelement application for jacket substructures. As an example the potential for fatigue load reduction is shown using the NREL offshore 5-MW baseline wind turbine and the OC4 reference jacket. The predicted fatigue lifetime was increased by about 15%.
Classification of landslide activity on a regional scale using persistent scatterer interferometry at the Moselle Valley (Germany)
Creators: name: Kalia, Andre Cahyadi
Publisher: name: Basel : MDPI AG
Year: 2018
Subjects: subject: Landslide
subject: Persistent Scatterer Interferometry
subject: PSI
subject: Sentinel-1
subject: Cluster analysis
subject: Cost effectiveness
subject: Global positioning system
subject: Hazards
subject: Interferometry
subject: Landslides
subject: Losses
subject: Disaster risk reductions
subject: Earth observation techniques
subject: High temporal resolution
subject: Landslide inventories
subject: Persistent scatterer interferometry (PSI)
subject: Spaceborne interferometric synthetic aperture radars
subject: Velocity threshold
subject: Synthetic aperture radar
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Landslides are a major natural hazard which can cause significant damage, economic loss, and loss of life. Between the years of 2004 and 2016, 55,997 fatalities caused by landslides were reported worldwide. Up-to-date, reliable, and comprehensive landslide inventories are mandatory for optimized disaster risk reduction (DRR). Various stakeholders recognize the potential of Earth observation techniques for an optimized DRR, and one example of this is the Sendai Framework for DRR, 2015-2030. Some of the major benefits of spaceborne interferometric Synthetic Aperture Radar (SAR) techniques, compared to terrestrial techniques, are the large spatial coverage, high temporal resolution, and cost effectiveness. Nevertheless, SAR data availability is a precondition for its operational use. From this perspective, Copernicus Sentinel-1 is a game changer, ensuring SAR data availability for almost the entire world, at least until 2030. This paper focuses on a Sentinel-1-based Persistent Scatterer Interferometry (PSI) post-processing workflow to classify landslide activity on a regional scale, to update existing landslide inventories a priori. Before classification, a Line-of-Sight (LOS) velocity conversion to slope velocity and a cluster analysis was performed. Afterwards, the classification was achieved by applying a fixed velocity threshold. The results are verified through the Global Positioning System (GPS) survey and a landslide hazard indication map.
Non-determinism in the limit of nonsmooth dynamics
Creators: name: Jeffrey, Mike R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Discontinuous time derivatives are used to model threshold-dependent switching in such diverse applications as dry friction, electronic control, and biological growth. In a continuous flow, a discon- tinuous derivative can generate multiple outcomes from a single initial state. Here we show that well defined solution sets exist for flows that become multi-valued due to grazing a discontinuity. Loss of determinism is used to quantify dynamics in the limit of infinite sensitivity to initial conditions, then applied to the dynamics of a superconducting resonator and a negatively damped oscillator.
A framework based on reference data with superordinate accuracy for the quality analysis of terrestrial laser scanning-based multi-sensor-systems
Creators: name: Stenz, Ulrich
name: Hartmann, Jens
name: Paffenholz, Jens-André
name: Neumann, Ingo
Publisher: name: Basel : MDPI AG
Year: 2017
Subjects: subject: Calibration
subject: Multi-sensor-systems
subject: Quality analysis
subject: TLS
subject: Laser applications
subject: Quality control
subject: Satellites
subject: Seebeck effect
subject: Steel beams and girders
subject: Surface analysis
subject: Thallium
subject: Uncertainty analysis
subject: Accuracy
subject: Atmospheric conditions
subject: Backward modeling
subject: Common coordinate systems
subject: Environmental conditions
subject: Laser tracker
subject: Terrestrial laser scanning
subject: Surveying instruments
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Terrestrial laser scanning (TLS) is an efficient solution to collect large-scale data. The efficiency can be increased by combining TLS with additional sensors in a TLS-based multi-sensorsystem (MSS). The uncertainty of scanned points is not homogenous and depends on many different influencing factors. These include the sensor properties, referencing, scan geometry (e.g., distance and angle of incidence), environmental conditions (e.g., atmospheric conditions) and the scanned object (e.g., material, color and reflectance, etc.). The paper presents methods, infrastructure and results for the validation of the suitability of TLS and TLS-based MSS. Main aspects are the backward modelling of the uncertainty on the basis of reference data (e.g., point clouds) with superordinate accuracy and the appropriation of a suitable environment/infrastructure (e.g., the calibration process of the targets for the registration of laser scanner and laser tracker data in a common coordinate system with high accuracy) In this context superordinate accuracy means that the accuracy of the acquired reference data is better by a factor of 10 than the data of the validated TLS and TLS-based MSS. These aspects play an important role in engineering geodesy, where the aimed accuracy lies in a range of a few mm or less.
Scleranthus collinus Opiz
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: S. collinus Hornung ex Opiz (S. verticillatus Tausch, S. annuus ssp. polycarpos Thell. p. p., S. a. ssp. biennis [Reuter] Braun-Blanquet et W. Koch) Cat. 148. Unter- und Mittelwallis. Genaue Verbreitung festzustellen.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Developing a micro-simulation tool for autonomous connected vehicle platoons used in city logistics
Creators: name: Haas, Inbal
name: Friedrich, Bernhard
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2017
Subjects: subject: autonomous vehicles
subject: city logistics
subject: connected vehicles
subject: micro-simulation
subject: platooning
subject: Konferenzschrift
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::380 | Handel, Kommunikation, Verkehr

description: The future holds great promise for the use of autonomous vehicles. Many daily activities which require the use of extensive manpower, will soon be performed with much less human interference, if at all. City logistics is an example of one such arena, which will most surely benefit from the introduction of autonomous vehicles. Autonomous vehicles will replace human couriers in the near future, and conduct delivery tasks. Given the current trends in the freight industry, this will probably be integrated with the use of platoons, which has recently gained an increasing interest in the freight sector. In this paper we present an urban freight delivery system, which is based on the use of autonomous connected platoons. In the presented system, autonomous vehicles carry out delivery tasks, traveling from an origin depot to a customer, by joining platoons along the way, which bring them closer to their destination. Many issues can be analysed with respect to the proposed system. In this paper, we choose to focus on the travel time issue. In particular, we examine the effects different platoon configurations (total number of platoons in the network and their size) have on the travel time of the vehicles performing the delivery tasks. In order to examine the proposed system, a traffic microsimulation is used. A case study is presented, demonstrating the effects of varying the platoon number and size on the travel time. The results show a relation between the configuration of platoons and the travel time, especially with respect to the delay in intersections, and the waiting time while switching platoons. © 2017 The Authors. Published by Elsevier B.V.
Automatic derivation of land-use from topographic data
Creators: name: Thiemann, Frank
name: Sester, Monika
name: Bobrich, Joachim
Publisher: name: Göttingen : Copernicus GmbH
Year: 2010
Subjects: subject: Generalization
subject: Aggregation
subject: Processing
subject: Large Vector Data
subject: CORINE Land Cover
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: The paper presents an approach for the reclassification and generalization of land-use information from topographic information. Based on a given transformation matrix describing the transition from topographic data to land-use data, a semantic and geometry based generalization of too small features for the target scale is performed. The challenges of the problem are as follows: (1) identification and reclassification of heterogeneous feature classes by local interpretation, (2) presence of concave, narrow or very elongated features, (3) processing of very large data sets. The approach is composed of several steps consisting of aggregation, feature partitioning, identification of mixed feature classes and simplification of feature outlines. The workflow will be presented with examples for generating CORINE Land Cover (CLC) features from German Authoritative Topographic Cartographic Information System (ATKIS) data for the whole are of Germany. The results will be discussed in detail, including runtimes as well as dependency of the result on the parameter setting.
Regional differences in subduction ground motions
Creators: name: Beauval, Céline
name: Cotton, F.
name: Abrahamson, N.
name: Theodulidis, N.
name: Delavaud, E.
name: Rodriguez, L.
name: Scherbaum, F.
name: Haendel, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: A few ground-motion prediction models have been published in the last years, for predicting ground motions produced by interface and intraslab earthquakes. When one must carry out a probabilistic seismic hazard analysis in a region including a subduction zone, GMPEs must be selected to feed a logic tree. In the present study, the aim is to identify which models provide the best fit to the dataset M6+, global or local models. The subduction regions considered are Japan, Taiwan, Central and South America, and Greece. Most of the data comes from the database built to develop the new BCHydro subduction global GMPE (Abrahamson et al., submitted). We show that this model is among best-fitting models in all cases, followed closely by Zhao et al. (2006), whereas the local Lin and Lee (2008) is well predicting the data in Taiwan and also in Greece. The Scherbaum et al. (2009) LLH method prove to be efficient in providing one number quantifying the overall fit, but additional analysis on the between-event and within-event variabilities are mandatory, to control if median prediction per event and/or variability within an event is within the scatter predicted by the model.
description: 10 pages
title: Методика проектирования полосковых антенн абонентских станций подвижной радиосвязи с учетом особенностей размещения
Creators: name: ., И.А. Герасимов – аспирант, гл. специалист, АО «Самарское инновационное предприятие радиосистем» E-mail: gerasimovia@siprs.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы. С учетом расширение сфер применения систем подвижной радиосвязи все большую популярность при разработке антенн абонентских станций приобретают решения на основе полосковых структур, максимально адаптированных к условиям размещения и эксплуатации.
Цель. Рассмотреть вопросы разработки антенн абонентских станций подвижной радиосвязи полоскового типа.
Результаты. Предложен алгоритм проектирования на основе базовых структур. Приведен пример расчета базовой структуры с целью получения оптимального конструктивно-технического решения с учетом предъявляемых требований.
Практическая значимость. Методика позволяет выполнить разработку антенн, реализующих требуемые характеристики при заданных условиях размещения.
Areal rainfall estimation using moving cars - computer experiments including hydrological modeling
Creators: name: Rabiei, Ehsan
name: Haberlandt, Uwe
name: Sester, Monika
name: Fitzner, Daniel
name: Wallner, Markus
Publisher: name: Göttingen : Copernicus GmbH
Year: 2016
Subjects: subject: geophysics
subject: hydrology
subject: moving cars
subject: rain
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::500 | Naturwissenschaften::551 | Geologie, Hydrologie, Meteorologie

description: The need for high temporal and spatial resolution precipitation data for hydrological analyses has been discussed in several studies. Although rain gauges provide valuable information, a very dense rain gauge network is costly. As a result, several new ideas have been emerged to help estimating areal rainfall with higher temporal and spatial resolution. Rabiei et al. (2013) observed that moving cars, called RainCars (RCs), can potentially be a new source of data for measuring rainfall amounts. The optical sensors used in that study are designed for operating the windscreen wipers and showed promising results for rainfall measurement purposes. Their measurement accuracy has been quantified in laboratory experiments. Considering explicitly those errors, the main objective of this study is to investigate the benefit of using RCs for estimating areal rainfall. For that, computer experiments are carried out, where radar rainfall is considered as the reference and the other sources of data, i.e. RCs and rain gauges, are extracted from radar data. Comparing the quality of areal rainfall estimation by RCs with rain gauges and reference data helps to investigate the benefit of the RCs. The value of this additional source of data is not only assessed for areal rainfall estimation performance, but also for use in hydrological modeling. The results show that the RCs considering measurement errors derived from laboratory experiments provide useful additional information for areal rainfall estimation as well as for hydrological modeling. Even assuming higher uncertainties for RCs as obtained from the laboratory up to a certain level is observed practical.
title: Возможности построения диаграммообразующих схем для многочастотных кольцевых антенных решеток на основе матриц Батлера
Creators: name: ., И.В. Дорощенко – соискатель, Поволжский государственный университет телекоммуникаций и информатики (г. Самара) E-mail: doron292@yandex.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы. Существуют проблемы синтеза многочастотных излучающих систем для антенно-фидерных устройств линейных станций подвижной радиосвязи.
Цель. Рассмотреть варианты построения диаграмоообразующих схем таких антенно-фидерных устройств на основе матриц Батлера.
Результаты. Представлены результаты моделирования различных вариантов построения антенных систем.
Практическая значимость. Проведенные исследования и расчеты показали, что использование ДОС на основе матриц Батлера, настроенной на определенную частоту, в сочетании как с широкополосной, так и узкополосной кольцевой антенной решеткой, позволяют использовать данные системы в широком диапазоне частот либо в нескольких частотных диапазонах при формировании ДН специальной формы.
RESISTIRE factsheet: Addressing Poverty and Social Exclusion: A Feminist Perspective
Creators: name: Ghidoni, Elena
name: Belloso, María López
name: Taramundi, Dolores Morondo
name: Silvestre, María
name: Türker, Nazlı
name: Delaney, Caitriona
Publisher: name: Zenodo
Year: 2023
Subjects: gender+
COVID-19
Policy recommendation
Poverty
inequalities
social exclusion

description: With multiple crises impacting the global economy, more and more people are being pushed or pushed harder into poverty. According to the UN (2022), 1 COVID-19 caused the first increase in poverty rates in decades. Lockdowns introduced at different phases of the pandemic led to job losses and consequent losses of income, accommodation, and financial independence. It has been shown that groups at various intersections of inequality and particularly gender, class, age, and nationality were made even more vulnerable and pushed into deep poverty during the crisis. Civil society organisations (CSOs), feminist organisations, and other initiatives played a key role in reaching out to the margins and supporting vulnerable groups who fell through the cracks of social protection schemes. Their creative strategies for fighting poverty along intersecting inequalities should be harnessed in the future to ensure a feminist and human rights approach.
title: Расчет импедансных характеристик антенной решетки с биизотропным киральным рефлектором
Creators: name: ., Ал.В. Карлов – к.ф.-м.н., начальник лаборатории, АО «Самарское инновационное предприятие радиосистем» E-mail: karlovav@siprs.ru В.Ю. Назин – соискатель, Поволжский государственный университет телекоммуникаций и информатики (г. Самара) E-mail: nv179@yandex.ru А.М. Нещерет – к.ф.-м.н., начальник лаборатории, АО «Самарское инновационное предприятие радиосистем» E-mail: nam@siprs.ru А.В. Шляхов – соискатель, Поволжский государственный университет телекоммуникаций и информатики (г. Самара) E-mail: shlyahov68@mail.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы. Использование киральных метаматериалов позволяет улучшить характеристики излучения антенн, согласование, а также снизить размеры излучателя.
Цель. Привести результаты расчета импедансных характеристик антенной решетки с киральным рефлектором на основе лево- и правосторонних элементов методом сингулярных интегральных уравнений (СИУ) с особенностями Коши.
Результаты. Рассчитаны импедансные характеристики антенной решетки с биизотропным киральным рефлектором. Показано, что в случае использования киральных рефлекторов АР лучше согласована с фидерным трактом. Кроме этого наблюдается увеличение числа резонансов и эффект укорочения.
Практическая значимость. Показано, что использование таких рефлекторов в антенных решетках позволяет улучшить согласование излучателей с фидерным трактом по сравнению с металлическим рефлектором.
An international comparison of individual tree detection and extraction using airborne laser scanning
Creators: name: Kaartinen, Harri
name: Hyyppä, Juha
name: Yu, Xiaowei
name: Vastaranta, Mikko
name: Hyyppä, Hannu
name: Kukko, Antero
name: Holopainen, Markus
name: Heipke, Christian
name: Hirschmugl, Manuela
name: Morsdorf, Felix
name: Næsset, Erik
name: Pitkänen, Juho
name: Popescu, Sorin
name: Solberg, Svein
name: Wolf, Bern Michael
name: Wu, Jee-Cheng
Publisher: name: Basel : MDPI AG
Year: 2012
Subjects: subject: 3D
subject: Airborne laser scanning
subject: Crown delineation
subject: EuroSDR
subject: Individual tree inventory
subject: ISPRS
subject: Tree detection
subject: Tree extraction
subject: Airborne Laser scanning
subject: Individual tree
subject: Experiments
subject: Laser applications
subject: Remote sensing
subject: Forestry
subject: Inventories
subject: Lasers
subject: Remote Sensing
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik

description: The objective of the "Tree Extraction" project organized by EuroSDR (European Spatial data Research) and ISPRS (International Society of Photogrammetry and Remote Sensing) was to evaluate the quality, accuracy, and feasibility of automatic tree extraction methods, mainly based on laser scanner data. In the final report of the project, Kaartinen and Hyyppä (2008) reported a high variation in the quality of the published methods under boreal forest conditions and with varying laser point densities. This paper summarizes the findings beyond the final report after analyzing the results obtained in different tree height classes. Omission/Commission statistics as well as neighborhood relations are taken into account. Additionally, four automatic tree detection and extraction techniques were added to the test. Several methods in this experiment were superior to manual processing in the dominant, co-dominant and suppressed tree storeys. In general, as expected, the taller the tree, the better the location accuracy. The accuracy of tree height, after removing gross errors, was better than 0.5 m in all tree height classes with the best methods investigated in this experiment. For forest inventory, minimum curvature-based tree detection accompanied by point cloud-based cluster detection for suppressed trees is a solution that deserves attention in the future.
title: The role of productivity in collective bargaining
title: Input or output or both?
titleType: AlternativeTitle
Creators: name: Haipeter, Thomas
name: Boewe, Jörn
name: Schulten, Johannes
Publisher: name: DuEPublico: Duisburg-Essen Publications Online, University of Duisburg-Essen, Germany
Year: 2018

description: At a glance ...
Productivity can play a role in collective bargaining both as an input and as an output; as an input it is a benchmark for wage agreements, as an output it is affected by the collective agreements.
Our study of four sectors shows some fundamental differences concerning the role of productivity in collective bargaining agreements in different areas of the economy.
Whereas productivity is still important to define and legitimize wage demands in the metalworking sector, it is no relevant benchmark in the service sectors we analysed.
The recognition of productivity as an input factor seems to be important for regarding it as an output factor as well. It is only in the metalworking sector where productivity as an output has some significance.
There are three collective bargaining issues focusing on productivity: performance based pay, profit sharing and, most explicitly, derogations from collective bargaining agreements.
Comprehensive and highly accurate measurements of crane runways, profiles and fastenings
Creators: name: Dennig, Dirk
name: Bureick, Johannes
name: Link, Johannes
name: Diener, Dmitri
name: Hesse, Christian
name: Neumann, Ingo
Publisher: name: Basel : MDPI AG
Year: 2017
Subjects: subject: Calibration
subject: Cameras
subject: Crane runway survey
subject: Multi sensor system
subject: Profile laser scanner
subject: Crane rails
subject: Crane runways
subject: Railroad tracks
subject: Surveying
subject: Surveys
subject: Crucial parameters
subject: Development process
subject: Highly accurate
subject: International organization for standardizations
subject: Laser scanner
subject: Multi-sensor systems
subject: Rail track inspection
subject: Test measurements
subject: Cranes
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: The process of surveying crane runways has been continually refined due to the competitive situation, modern surveying instruments, additional sensors, accessories and evaluation procedures. Guidelines, such as the International Organization for Standardization (ISO) 12488-1, define target values that must be determined by survey. For a crane runway these are for example the span, the position and height of the rails. The process has to be objective and reproducible. However, common processes of surveying crane runways do not meet these requirements sufficiently. The evaluation of the protocols, ideally by an expert, requires many years of experience. Additionally, the recording of crucial parameters, e.g., the wear of the rail, or the condition of the rail fastening and rail joints, is not regulated and for that reason are often not considered during the measurement. To solve this deficit the Advanced Rail Track Inspection System (ARTIS) was developed. ARTIS is used to measure the 3D position of crane rails, the cross-section of the crane rails, joints and, for the first time, the (crane-rail) fastenings. The system consists of a monitoring vehicle and an external tracking sensor. It makes kinematic observations with the tracking sensor from outside the rail run, e.g., the floor of an overhead crane runway, possible. In this paper we present stages of the development process of ARTIS, new target values, calibration of sensors and results of a test measurement.