cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Simulative Optimierung der Bahnplanung mit mehrfacher Redundanz bei der roboterassistierten Laserosteotomie
Creators: name: Schappler, Moritz
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität
Year: 2013
Subjects: subject: Bahnplanung
subject: mehrfache Redundanz
subject: Robotik
subject: Aufgabenredundanz
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Diese Arbeit beschäftigt sich mit der Weiterentwicklung einer Simulationsumgebung zur roboterassistierten Laserosteotomie um eine Bahnplanung, die die mehrfache kinematische Redundanz eines Roboter-Laser-Systems berücksichtigt. Die Redundanz entsteht durch das Zusammenspiel des an sich bereits redundanten Leichtbauroboters mit den zusätzlichen Freiheitsgraden des Laser-Scanner-Systems. Es werden unterschiedliche Ansätze zur Auflösung vorgestellt, implementiert und anschließend bewertet.
Архитектурная критика в социокультурной среде России 1990–2000-х годов
Creators: name: Данилов Вадим Валерьевич
Publisher: name: Ценности и смыслы
Year: 2024
Subjects: архитектурная критика
глянцевые журналы
медиа
культурное потребление
architectural criticism
glossy magazines
media
cultural consumption

description: На протяжении 1990–2000-х гг. на страницах российских медиа широко распространяется архитектурная критика — её публикуют как в серьёзных деловых изданиях, так и в более легкомысленном «глянце», со временем она охватывает всё более широкие аудитории. Эта критика совсем не похожа на ту, которая печаталась в советской архитектурной периодике, она успешно «сепарировалась» от профессиональной среды, перенеся архитектуру в область культурной повестки. Новая роль критики связана с конструированием специфической интеллектуальной аудитории в изданиях этого периода, тесно связанным с развитием общества потребления, а также процессами смещения «монополии» на экспертное знание. В данной статье рассматриваются основные характерные черты архитектурной критики в медиакультуре 1990–2000-х гг., предпринимается попытка рассмотреть её новые формы как единый культурный феномен, не наследующий архитектурной критике как части советского архитектурного дискурса. Рассматривается связь широкого распространения архитектурной критики с объективными экономическими факторами, а также её роль в формировании массового нарратива о современной российской архитектуре.
description: Throughout the 1990–2000s architectural criticism is widely presented on the pages of the Russian media — it was published both in serious newspapers and business magazines and in more frivolous «glossy» ones, reaching more and more new audiences over time. This criticism is not at all similar to that which was published in Soviet architectural periodicals; it was successfully «separated» from the professional architectural environment, transferring architecture to the cultural agenda. The new role of architectural criticism is associated with the processes of constructing a specific intellectual audience in media of this period, which is closely related to the development of consumer society, as well as the processes of shifting the «monopoly» to expert knowledge. This article examines the main characteristic features of architectural criticism in the media culture of the 1990–2000s, and attempts to consider its new forms as a single cultural phenomenon that does not inherit architectural criticism as part of Soviet architectural discourse. The connection between the widespread dissemination of architectural criticism and objective economic factors, as well as its role in the formation of a mass narrative about modern Russian architecture, is examined.
Experimental visualization of labyrinthine structure with optical coherence tomography
Creators: name: Mohebbi, Saleh
name: Mirsalehi, Marjan
name: Kahrs, Lüder Alexander
name: Ortmaier, Tobias
name: Lenarz, Thomas
name: Majdani, Omid
Publisher: name: Mashhad : Mashhad University of Medical Sciences
Year: 2017
Subjects: subject: Cochlea
subject: Decalcification
subject: Labyrinth
subject: Optical Coherence Tomography
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: Introduction: Visualization of inner ear structures is a valuable strategy for researchers and clinicians working on hearing pathologies. Optical coherence tomography (OCT) is a high-resolution imaging technology which may be used for the visualization of tissues. In this experimental study we aimed to evaluate inner ear anatomy in well-prepared human labyrinthine bones. Materials and Methods: Three fresh human explanted temporal bones were trimmed, chemically decalcified with ethylenediaminetetraacetic acid (EDTA), and mechanically drilled under visual control using OCT in order to reveal the remaining bone shell. After confirming decalcification with a computed tomography (CT) scan, the samples were scanned with OCT in different views. The oval window, round window, and remnant part of internal auditory canal and cochlear turn were investigated. Results: Preparation of the labyrinthine bone and visualization under OCT guidance was successfully performed to a remaining bony layer of 300μm thickness. OCT images of the specimen allowed a detailed view of the intra-cochlear anatomy. Conclusion: OCT is applicable in the well-prepared human inner ear and allows visualization of soft tissue parts.
A new calibration for the Blue Horizontal Branch
Creators: name: Fermani, Francesco
name: Schönrich, Ralph
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We suggest a simple analytic approximation for magnitudes and hence distances of Blue Horizontal Branch (BHB) stars in Sloan colours. Precedent formulations do not offer a simple closed formula, nor do they cover the full dependences, e.g. on metallicity. Further, using BHB star samples from the Sloan Digital Sky Survey (SDSS) we validate our distance calibration directly on field stars instead of globular clusters and assess the performance of other available distance calibrations. Our method to statistically measure distances is sufficiently accurate to measure the colour and metallicity dependence on our sample and can be applied to other sets of stars or filters.
description: accepted for publication in MNRAS 9 pages, 9 figures
Superconformal symmetry and higher-derivative Lagrangians
Creators: name: Van Proeyen, Antoine
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Superconformal methods are useful to build invariant actions in supergravity. We have a good insight in the possibilities of actions that are at most quadratic in spacetime derivatives, but insight in general higher-derivative actions is missing. Recently higher-derivative actions got more attention for several applications. One of these is the understanding of finiteness of loop computations in supergravities. Divergences can only occur if invariant counterterms or anomalies exist. One can wonder whether conformal symmetry might also play a role in this context. In order to construct higher-derivative supergravities with the conformal methods, one should first get more insight in such rigid supersymmetric actions with extra fermionic symmetries. We show how Dirac--Born--Infeld actions with Volkov--Akulov supersymmetries can be constructed in all orders.
description: 22 pages; Contribution to the proceedings of 'Breaking of supersymmetry and Ultraviolet Divergences in extended Supergravity', Frascati, March 2013, to be published as Springer Lecture Notes
Microstructural characterization and simulation of damage for geared sheet components
Creators: name: Gerstein, G.
name: Isik, K.
name: Gutknecht, F.
name: Sieczkarek, P.
name: Ewert, J.
name: Tekkaya, A.E.
name: Clausmeyer, T.
name: Nürnberger, F.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2017
Subjects: subject: Damage
subject: Load path dependence
subject: Microscopy
subject: Microstructure
subject: Sheet metal
subject: Sheet-bulk metal forming
subject: Simulation
subject: Voids
subject: Characterization
subject: Materials testing
subject: Metal forming
subject: Metal testing
subject: Metals
subject: Microscopic examination
subject: Scanning electron microscopy
subject: Void fraction
subject: Load paths
subject: Sheet-Bulk Metal Forming
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The evolution of damage in geared components manufactured from steel sheets was investigated, to analyse the influence of damage caused by the sheet-bulk-metal forming. Due to the inhomogeneous and multi-axial deformation in the investigated parts, different aspects such as the location-dependent shape and size of voids are analysed by means of various microscopic methods. In particular, a method to characterize the state of damage evolution, i. e. void nucleation, growth and coalescence using scanning electron microscopy (SEM) is applied. The investigations reveal a strong dependence of the void area fraction, shape of voids and thus damage evolution on the loading mode. The microstructural analysis is complemented with FEM simulations using material models which consider the characteristics of the void evolution. © Published under licence by IOP Publishing Ltd.
Reducing Food Loss and Waste in Restaurants: Exploring Determinants and Impacts - A Systematic Review
Creators: name: Silva, Alessandro Santos
name: De Almeida, Luciana Florêncio
Publisher: name: Proceedings in Food System Dynamics
Year: 2024

description: Research on Food Loss and Waste (FLW) has mainly focused on quantifying causes, often neglecting strategies for mitigation. This article organizes literature on FLW determinants and effects in restaurants, reviewing 80 selected articles from Scopus and Web of Science. Findings reveal FLW in restaurants, determined by consumer behavior, restaurant management, and public policies, has economic and environmental effects. The study emphasizes the importance of investing in employee training and policies promoting FLW reduction. It also underscores the need for educating consumers on responsible consumption. Implementing these measures will foster sustainable and efficient food systems, minimizing adverse effects of food waste.
description: Proceedings in Food System Dynamics, Proceedings in System Dynamics and Innovation in Food Networks 2024
Vulnerability to Resilience for Smallholder Small Grain Farmers. The Case of Semi-Arid Regions of Southern Zimbabwe
Creators: name: Dube-Takaza, Tryphina
name: Maumbe, Blessing
name: Parwada, Cosmas
Publisher: name: Proceedings in Food System Dynamics
Year: 2024

description: Small grain production provides hope for farmers in regions affected by climate change. This study determined the levels of smallholder small grain farmers’ vulnerability and resilience using data collected from four districts (Binga, Chiredzi, Hwange and Matobo) in Zimbabwe’s agro-ecological regions 1V and V. A mixed method approach was used to collect data from 281 respondents. A multistage sampling approach with purposive selection of districts dominant in small grain production was conducted. For each district, two wards were selected randomly.  Stata version (16) was used to analyse data. Factor analysis and Agricultural drought index (ADRI) were used to quantify farmer vulnerability and resilience. Results show that 46.3% were in the medium vulnerability group while 26% were highly vulnerable. Districts on contract farming were less vulnerable than districts on non-contract. Farmer resilience varied with location with Chiredzi having highest (ADRI 4.56) and the least was Matobo (ADRI 3.32). The study made three recommendations; the production of improved small grain varieties in regions IV and V, the practice of conservation agriculture as an adaptation strategy to climate change, aggressive enforcement of agricultural policies relating to the production of small grain on contract farming.
description: Proceedings in Food System Dynamics, Proceedings in System Dynamics and Innovation in Food Networks 2024
Interaction of Traveling Waves with Mass-With-Mass Defects within a Hertzian Chain
Creators: name: Kevrekidis, P. G.
name: Vainchtein, A.
name: Garcia, M. Serra
name: Daraio, C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We study the dynamic response of a granular chain of particles with a resonant inclusion (i.e., a particle attached to a harmonic oscillator, or a mass-with-mass defect). We focus on the response of granular chains excited by an impulse, with no static precompression. We find that the presence of the harmonic oscillator can be used to tune the transmitted and reflected energy of a mechanical pulse by adjusting the ratio between the harmonic resonator mass and the bead mass. Furthermore, we find that this system has the capability of asymptotically trapping energy, a feature that is not present in granular chains containing other types of defects. Finally, we study the limits of low and high resonator mass, and the structure of the reflected and transmitted pulses.
description: 15 pages, 11 figures
Vulnerability and Critical Control Point Assessment of the Feta Cheese Supply Chain in Greece towards Blockchain Implementation
Creators: name: Vasileiou, Marios
name: Kyriakos, Leonidas Sotirios
name: Kleisiari, Christina
name: Kleftodimos, Georgios
name: Vlontzos, George
Publisher: name: Proceedings in Food System Dynamics
Year: 2024

description: As unique and culturally important commodities, food items designated with Protected Designation of Origin (PDO) play a pivotal role in the food supply chain by safeguarding the authenticity and uniqueness of regional delicacies. Within the PDO realm, Feta cheese, a culturally significant dairy product with strict geographic and production regulations, faces challenges like counterfeit products, threatening its authenticity. This study examines the PDO Feta cheese supply chain, focusing on "Olympos" producer and "Masoutis" retailer in Greece. This evaluation utilizes the Delphi Technique in combination with the design phases of HACCP, VACCP, and TACCP to thoroughly examine operations, vulnerabilities, and critical control points. The findings reveal numerous weaknesses and critical control points in the Feta cheese supply chain that require attention and serve as a foundation for enhancing PDO supply chains. Moreover, Blockchain Technology (BT) is proposed as a solution to enhance traceability. BT, with its decentralized and immutable ledger system, is seen as transformative in data management, fostering trust among stakeholders. It ensures transparent and auditable records throughout the supply chain, providing consumers with unprecedented authenticity transparency. The integration of BT holds promise for enhancing overall integrity and efficiency, benefiting all stakeholders.
description: Proceedings in Food System Dynamics, Proceedings in System Dynamics and Innovation in Food Networks 2024
title: Предисловие Л.Ю.Эренмальма к рукописи о России (1711―1714)
Creators: name: Беспятых, Юрий
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: Л.Ю.Мальм (Malm), он же Эренмальм (Ehrenmalm), изучил состояние Русского государства, которое воевало против Швеции, намереваясь своим сочинением помочь шведским властям лучше узнать силы и возможности противника. Рукопись содержит собранные автором сведения о наиболее важных темах: многочисленности населения, природных богатствах, промышленном производстве, коммерции, доходах, сухопутных и морских силах России, а также о трудностях, с которыми неизбежно столкнется королевство, борющееся против обновленной Петром I страны.
Modeling the transient aerodynamic effects during the motion of a flexible trailing edge
Creators: name: Wolff, T.
name: Seume, J.R.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2016
Subjects: subject: wind turbine
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Wind turbine blades have been becoming longer and more slender during the last few decades. The longer lever arm results in higher stresses at the blade root. Hence, the unsteady loads induced by turbulence, gust, or wind shear increase. One promising way to control these loads is to use flexible trailing edges near the blade tip. The unsteady effects which appear during the motion of a flexible trailing edge must be considered for the load calculation during the design process because of their high influence on aeroelastic effects and hence on the fatigue loads. This is not yet possible in most of the wind turbine simulation environments. Consequently, an empirical model is developed in the present study which accounts for unsteady effects during the motion of the trailing edge. The model is based on Fourier analyses of results generated with Reynolds-Averaged Navier-Stokes (RANS) simulations of a typical thin airfoil with a deformable trailing edge. The validation showed that the model fits Computational Fluid Dynamics (CFD) results simulated with a random time series of the deflection angle.
On the influence of airfoil deviations on the aerodynamic performance of wind turbine rotors
Creators: name: Winstroth, J.
name: Seume, J.R.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2016
Subjects: subject: wind turbine
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The manufacture of large wind turbine rotor blades is a difficult task that still involves a certain degree of manual labor. Due to the complexity, airfoil deviations between the design airfoils and the manufactured blade are certain to arise. Presently, the understanding of the impact of manufacturing uncertainties on the aerodynamic performance is still incomplete. The present work analyzes the influence of a series of airfoil deviations likely to occur during manufacturing by means of Computational Fluid Dynamics and the aeroelastic code FAST. The average power production of the NREL 5MW wind turbine is used to evaluate the different airfoil deviations. Analyzed deviations include: Mold tilt towards the leading and trailing edge, thick bond lines, thick bond lines with cantilever correction, backward facing steps and airfoil waviness. The most severe influences are observed for mold tilt towards the leading and thick bond lines. By applying the cantilever correction, the influence of thick bond lines is almost compensated. Airfoil waviness is very dependent on amplitude height and the location along the surface of the airfoil. Increased influence is observed for backward facing steps, once they are high enough to trigger boundary layer transition close to the leading edge.
On an integrable discretisation of the Ablowitz-Ladik hierarchy
Creators: name: Zullo, Federico
Publisher: name: arXiv
Year: 2013
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: Following the general results on the relationships about Backlund transformations (BTs) and exact discretisation given in a previous work [12], we consider the Ablowitz-Ladik hierarchy and a corresponding family of BTs. After discussing the boundary conditions, we show how to get explicit transformations. The Hamiltonian properties of the maps and of the discrete flows are examined. The conditions on the parameters of the map giving exact discretisations are discussed. Finally, analytical and numerical examples are given.
description: 18 pages, 2 figures. Submitted to Inverse Problems. Supported by an INdAM-COFUND Fellowship
Entwurf einer adaptiven Vorsteuerung für mechatronische Systeme basierend auf differentieller Flachheit
Creators: name: Schappler, Moritz
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität
Year: 2014
Subjects: subject: Zahnriemen-Linearachse
subject: flachheitsbasierte Vorsteuerung
subject: differentielle Flachheit
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Im Rahmen dieser Arbeit werden für einen Linearachsprüfstand modellbasierte Vorsteuerungen vorgestellt, experimentell umgesetzt und mit bestehenden Ansätzen verglichen. Für die modellbasierte Berechnung wird die Methode der differentiellen Flachheit verwendet. Dabei handelt es sich um eine industriell noch nicht weit verbreitete differentialgeometrische Systembetrachtung, die den Entwurf von Vorsteuerungen wesentlich vereinfacht.
Simulation Analysis of Routing Protocols using Manhattan Grid Mobility Model in MANET
Creators: name: Saadi, Youssef
name: Kafhali, Said El
name: Haqiq, Abdelkrim
name: Nassereddine, Bouchaib
Publisher: name: arXiv
Year: 2013
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: A Mobile Ad-hoc Network (MANET) is a self-configuring infrastructure less network of mobile devices connected by wireless links. In this network technology, simulative analysis is a significant method to understand the performance of routing protocols. In this paper three protocols AODV, DSDV and DSR were simulated using Manhattan Grid Mobility Model. The reactive (AODV, DSR) and proactive (DSDV) protocols internal mechanism leads to considerable performance difference. The performance differentials are analyzed using NS-2 which is the main network simulator, NAM (Network Animator), AWK (post processing script) and were compared in terms of Packet Delivery Fraction (PDF), Average end-to-end Delay and Throughput, in different environments specified by varying network load, mobility rate and number of nodes. Our results presented in this research work demonstrate the performance analysis of AODV, DSDV and DSR routing protocols. It has been observed that, under Manhattan Grid mobility model, AODV and DSR performs better than DSDV in terms of PDF and Throughput. However in term of Average end-to-end Delay, DSDV appears to be the best one.
description: 7 pages
Matching persistent scatterers to buildings
Creators: name: Schunert, A.
name: Schack, L.
name: Sörgel, Uwe
Publisher: name: Göttingen : Copernicus GmbH
Year: 2012
Subjects: subject: Interferometer
subject: Matching
subject: Monitoring
subject: SAR
subject: Urban
subject: Deformation
subject: Interferometers
subject: Interferometry
subject: Photogrammetry
subject: Remote sensing
subject: Roofs
subject: Synthetic aperture radar
subject: Atmospheric disturbance
subject: Deformation time-series
subject: Persistent scatterer interferometry (PSI)
subject: Persistent scatterers
subject: Surrounding buildings
subject: Buildings
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Persistent Scatterer Interferometry (PSI) is by now a mature technique for the estimation of surface deformation in urban areas. In contrast to the classical interferometry a stack of interferograms is used to minimize the influence of atmospheric disturbances and to select a set of temporarily stable radar targets, the so called Persistent Scatterers (PS). As a result the deformation time series and the height for all identified PS are obtained with high accuracy. The achievable PS density depends thereby on the characteristics of the scene at hand and on the spatial resolution of the used SAR data. This means especially that the location of PS cannot be chosen by the operator and consequently deformation processes of interest may be spatially undersampled and not retrievable from the data. In case of the newly available high resolution SAR data, offering a ground resolution around one metre, the sampling is potentially dense enough to enable a monitoring of single buildings. However, the number of PS to be found on a single building highly depends on its orientation to the viewing direction of the sensor, its facade and roof structure, and also the surrounding buildings. It is thus of major importance to assess the PS density for the buildings in a scene for real world monitoring scenarios. Besides that it is interesting from a scientific point of view to investigate the factors influencing the PS density. In this work, we fuse building outlines (i.e. 2D GIS data) with a geocoded PS point cloud, which consists mainly in estimating and removing a shift between both datasets. After alignment of both datasets, the PS are assigned to buildings, which is in turn used to determine the PS density per building. The resulting map is a helpful tool to investigate the factors influencing PS density at buildings.
title: Молодой Эйхенбаум и Молодой Толстой: Литература как оформление опыта жизни
Creators: name: Dobrenko, Evgeny
Publisher: name: AvtobiografiЯ
Year: 2013

description: The article analyses Boris Eikhenbaum’s studies related to Mikhail Lermontov and Lev Tolstoy. It demonstrates that Eikhenbaum’s works related to these authors contained many polemical touches with various critics of the 1920s who aspired to appropriate Russian realist mode of writing for the construction of a new type of artistic expression. It suggests that Eikhenbaum’s interest in the literary devices found in the works of Tolstoy was inseparable from the scholar’s concerns about the interaction between life experiences and literary processes in the light of Formalist theories.
Antiradical effect and phytochemical characterisation of the leaves of Parkia platycephala Benth
Creators: name: Costa, Isabella Cristhina Gonçalves
name: Damasceno, Fernando Cruvinel
name: Menegatti, Angela Camila Orbem
name: Júnior, Gerardo Magela Vieira
name: Chaves, Mariana Helena
name: de França Ferreira, Éverton Leandro
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: The objective of this study was to isolate and identify compounds present in the leaves of Parkia platycephala Benth (Leguminosae-Mimosoideae) and evaluate the antiradical potential of the derived extracts and fractions. Seven compounds were successfully isolated from the ethanolic leaf extract, comprising gallic acid, flavonoids, triterpenoids, and phytosteroids. Structural identification was accomplished through comprehensive spectroscopic data analysis, including NMR and mass spectrometry (ESI-MS), and comparison with existing literature. The antiradical efficacy of both the extract and its fractions was determined in vitro through assays measuring 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging and quantifying total phenolics via UV/Vis, revealing notable antioxidant activity in extracts from P. platycephala Benth, especially in the EtOH, EtOAc, and aqueous fractions, attributed to their high phenolic content and prevalence of flavonoids. These findings contribute to a deeper understanding of Parkia’s chemical composition and its potential biological benefits.
Advanced Wear Simulation for Bulk Metal Forming Processes
Creators: name: Behrens, Bernd-Arno
name: Bouguecha, Anas
name: Vucetic, Milan
name: Chugreev, Alexander
Publisher: name: Les Ulis : E D P Sciences
Year: 2016
Subjects: subject: finite-element-analysis
subject: life
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: In the recent decades the finite element method has become an essential tool for the cost-efficient virtual process design in the metal forming sector in order to counter the constantly increasing quality standards, particularly from the automotive industry as well as intensified international competition in the forging industry. An optimized process design taking precise tool wear prediction into account is a way to increase the cost-efficiency of the bulk metal forming processes. The main objective of the work presented in this paper is a modelling algorithm, which allows predicting die wear with respect to a geometry update during the forming simulation. Changes in the contact area caused by geometry update lead to the different die wear distribution. It primarily concerns the die areas, which undergo high thermal and mechanical loads.
Probing Terahertz Metamaterials with Subwavelength Optical Fibers
Creators: name: Girard, Martin
name: Skorobogatiy, Maksim
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Transmission through a subwavelength terahertz fiber, which is positioned in parallel to a frequency selective surface, is studied using several finite element tools. Both the band diagram technique and the port-based scattering matrix technique are used to explain the nature of various resonances in the fiber transmission spectrum. First, we observe that spectral positions of most of the transmission peaks in the port-based simulation can be related to the positions of Van Hove singularities in the band diagram of a corresponding infinite periodic system. Moreover, spectral shape of most of the features in the fiber transmission spectrum can be explained by superposition of several Fano-type resonances. We also show that center frequencies and bandwidths of these resonances and, as a consequence, spectral shape of the resulting transmission features can be tuned by varying the fiber-metamaterial separation.
Larix decidua subsp. europaea Domin
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: L. decidua Miller ssp. europaea (DC.) Domin (L. europaea DC.) Cat. 407. Vgl. HessLit. 1942b. Zur Angabe des Cat.: «rare sur le calcaire, tres commun sur le terrain primitif» ist ergänzend zu bemerken, dass die Lärcheindifferenthinsichtlichder geologischenUnterlage ist, wobeijedoch eine Einschränkungzumachenist:dervon ihrbewohnteBodenmusseinebestimmteMengeTonenthalten (vgl. HESSl. C.). Bis etwa 2900m. l: Vallee de Novel, schweizerischer Teil (Briquet). - 2: Im Gebiet von Branson-Fully bis 2360 m (Garns);obOvronnaz,unterdemNordgratder GrandeGarde (F.). - 3:BeiZermattamGrünsee nochbei2510m (HessLit.1942c,S.56),amUnterrothorn bis etwa2900m (Wille briefl. 1925;vgl. auchWille Lit. 1932,S.355). - 4: Binntal: bis2250m amHirlihorn (Binz). Var. alba (Endl.) SchinzetKeller- l: LesOranges ob Salvan (Oberson); ob Les Marecottes (Coquoz). - 2: Lens-Chätelard (Marietan). - 3: Riddes (J.); Chandolin (nach Schinz und Keller); Turtig-Unterbäch (Wille); Törbel (Stehler); Riffelalp (nach SchinzundKeller).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Influence of Cobalt on the Properties of Load-Sensitive Magnesium Alloys
Creators: name: Klose, Christian
name: Demminger, Christian
name: Mroz, Gregor
name: Reimche, Wilfried
name: Bach, Friedrich-Wilhelm
name: Maier, Hans Jürgen
name: Kerber, Kai
Publisher: name: Basel : Mdpi Ag
Year: 2013
Subjects: subject: physical sensors
subject: magnetic materials
subject: load-sensitive materials
subject: villari effect
subject: magnesium
subject: cobalt
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: In this study, magnesium is alloyed with varying amounts of the ferromagnetic alloying element cobalt in order to obtain lightweight load-sensitive materials with sensory properties which allow an online-monitoring of mechanical forces applied to components made from Mg-Co alloys. An optimized casting process with the use of extruded Mg-Co powder rods is utilized which enables the production of magnetic magnesium alloys with a reproducible Co concentration. The efficiency of the casting process is confirmed by SEM analyses. Microstructures and Co-rich precipitations of various Mg-Co alloys are investigated by means of EDS and XRD analyses. The Mg-Co alloys' mechanical strengths are determined by tensile tests. Magnetic properties of the Mg-Co sensor alloys depending on the cobalt content and the acting mechanical load are measured utilizing the harmonic analysis of eddy-current signals. Within the scope of this work, the influence of the element cobalt on magnesium is investigated in detail and an optimal cobalt concentration is defined based on the performed examinations.
Joint Secured and Robust Technique for OFDM Systems
Creators: name: Al-Dweik
name: Mirahmadi, M.
name: Shami, A.
name: Ding, Z.
name: Hamila, R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This work presents a novel technique for joint secured and robust transmission of orthogonal frequency division multiplexing (OFDM) based communication systems. The proposed system is implemented by developing a new OFDM symbol structure based on symmetric key cryptography. At the receiver side, data detection becomes infeasible without the knowledge of the secret key. For an intruder who tries to detect the data without the knowledge of the key, the signal will be a noise-like signal. In addition to the system security, theoretical and simulation results demonstrated that the proposed system provides time and frequency diversity, which makes the system highly robust against severe frequency-selective fading as well as other impairments such as impulsive noise and multiple access interference. For particular frequency-selective fading channels, the bit error rate (BER) improvements was about 15 dB at BER of 10E-4.
description: This article has been submitted for possible publication at the IEEE ICC 2013
Lopsided dust rings in transition disks
Creators: name: Birnstiel, T.
name: Dullemond, C. P.
name: Pinilla, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context. Particle trapping in local or global pressure maxima in protoplanetary disks is one of the new paradigms in the theory of the first stages of planet formation. However, finding observational evidence for this effect is not easy. Recent work suggests that the large ring-shaped outer disks observed in transition disk sources may in fact be lopsided and constitute large banana-shaped vortices. Aims. We wish to investigate how effective dust can accumulate along the azimuthal direction. We also want to find out if the size- sorting resulting from this can produce a detectable signatures at millimeter wavelengths. Methods. To keep the numerical cost under control we develop a 1+1D method in which the azimuthal variations are treated sepa- rately from the radial ones. The azimuthal structure is calculated analytically for a steady-state between mixing and azimuthal drift. We derive equilibration time scales and compare the analytical solutions to time-dependent numerical simulations. Results. We find that weak, but long-lived azimuthal density gradients in the gas can induce very strong azimuthal accumulations of dust. The strength of the accumulations depends on the Péclet number, which is the relative importance of advection and diffusion. We apply our model to transition disks and our simulated observations show that this effect would be easily observable with ALMA and in principle allows to put constraints on the strength of turbulence and the local gas density.
description: 4 pages, 4 figures, accepted for publication in A&A Letters
Ex-situ and in-situ investigations of thermal anti-oxidation treatments of stainless steels by reflection mode EXAFS
Creators: name: Lützenkirchen-Hecht, D.
name: Wulff, Daniel
name: Wagner, R.
name: Holländer, Ulrich
name: Maier, Hans Jürgen
name: Frahm, R.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2016
Subjects: subject: Atomic physics
subject: Belt conveyors
subject: Oxidation
subject: Vacuum furnaces
subject: X ray absorption
subject: Anti-oxidation
subject: Conveyor belts
subject: High-vacuum environments
subject: In-situ investigations
subject: Inert carrier gas
subject: Metallic state
subject: Reflection modes
subject: Steel surface
subject: Ablation
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Different thermal treatments were performed for the anti-oxidation of steel surfaces, and the processes were investigated ex-situ and in-situ by surface sensitive reflection mode EXAFS experiments at the Cr and Fe K-edges. While the samples for the ex-situ studies were heat-treated in a conveyor belt furnace at temperatures between 600 and 900 °C in inert carrier gases (N2 or Ar) using different additives such as hydrogen (H2) and monosilane (SiH4), the in- situ anti-oxidation treatments have been performed in a high vacuum environment (p < 10-6 mbar). While the ex-situ experiments suggest that SiH4-additives are needed for the reduction of the steel to a metallic state, the in-vacuum treatments appear successful for temperatures above approx. 900 °C.
Coffee Lecture: Mastering the New DFG CV Template for Your Research Proposal
Creators: name: Meyer, Anneke
name: Friedrichs, Annabel
Publisher: name: Zenodo
Year: 2024
Subjects: Research Assessment
Narrative CV
German Research Foundation (DFG)
Contributor Role Taxonomy (CRediT)

description: If you are planning to submit a funding proposal to the German Research Foundation (DFG), you've probably come across the DFG's new mandatory CV template. Unlike traditional CVs, this template requires you to contextualize your scientific achievements and career path in a partially narrative format. This innovative approach may seem unfamiliar at first.In this presentation we cover these aspects:- Understanding the rationale and context of this new format,- Best practices for completing the form, with a focus on optimizing the free text fields,- Personal Insights: Share your experiences and tips if you have already used the new template.

We also provide information on further resources and information material.
Hybrid high-temperature superconductor-semiconductor tunnel diode
Creators: name: Hayat, Alex
name: Zareapour, Parisa
name: Zhao, Shu Yang F.
name: Jain, Achint
name: Savelyev, Igor G.
name: Blumin, Marina
name: Xu, Zhijun
name: Yang, Alina
name: Gu, G. D.
name: Ruda, Harry E.
name: Jia, Shuang
name: Cava, R. J.
name: Steinberg, Aephraim M.
name: Burch, Kenneth S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report the demonstration of hybrid high-Tc-superconductor-semiconductor tunnel junctions, enabling new interdisciplinary directions in condensed matter research. The devices were fabricated by our newly-developed mechanical bonding technique, resulting in high-Tc-semiconductor planar junctions acting as superconducting tunnel diodes. Tunneling-spectra characterization of the hybrid junctions of Bi2Sr2CaCu2O8+δ combined with bulk GaAs, or a GaAs/AlGaAs quantum well, exhibits excess voltage and nonlinearity - in good agreement with theoretical predictions for a d-wave superconductor-normal material junction, and similar to spectra obtained in scanning tunneling microscopy. Additional junctions are demonstrated using Bi2Sr2CaCu2O8+δ combined with graphite or Bi2Te3. Our results pave the way for new methods in unconventional superconductivity studies, novel materials and quantum technology applications.
title: Пассивные формы крестьянского протеста в 1920-е годы (на материалах Новгородской губернии)
Creators: name: Дорофеева, Анастасия
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: Анализируется один из двух типов крестьянского сопротивления отдельным мероприятиям советской власти в годы новой экономической политики — пассивный протест (на материалах Новгородской губернии). На основе неопубликованных документов автор изучил основные формы выражения пассивного протеста, которые явились своеобразным ответом новгородских крестьян на действия властных органов, и пришел к выводу о том, что его сущность заключалась в стремлении крестьянства защитить свои интересы и решать возникавшие конфликты мирными способами.
title: Языковые средства выражения авторской модальности в политических газетных текстах (на материале французского языка)
Creators: name: Богданова, Виктория
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: Современная французская пресса политического содержания отражает не только факты политической жизни, но и является действенным способом манипуляции широкой аудиторией. Исходя из утверждения, что высказывание содержит не только фактическую интерпретацию, но и субъективную оценку, было выдвинуто предположение о том, что реализация интенций автора газетного сообщения напрямую зависит от выбора языковых средств выразительности. Выбор и наделение текста определенными языковыми средствами для усиления эффекта восприятия информации и тем самым выражение собственного отношения определило авторскую модальность. Для выявления способов модализации текста был произведен количественный контент-анализ фрагментов аналитических статей французской ежедневной газеты Le Monde на синтаксическом, стилистическом и грамматическом уровнях. В результате проведенного исследования было доказано, что автор газетного сообщения, используя разнообразные языковые средства, выражает свое личное мнение к сообщаемой политической информации, то есть модализирует текст. Подобная модализация газетного текста является действенным способом влияния на политическую картину мира реципиента, вовлекает его в виртуальный диалог.
Development of a brazing process for the production of water- cooled bipolar plates made of chromium-coated metal foils for PEM fuel cells
Creators: name: Mueller, M.
name: Hoehlich, D.
name: Scharf, I.
name: Lampke, T.
name: Holländer, Ulrich
name: Maier, Hans Jürgen
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2016
Subjects: subject: PEM fuel cells
subject: power source
subject: Polymer Electrolyte Fuel Cell (PEFC)
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Beside lithium batteries, PEM fuel cells are the most promising strategy as a power source to achieve the targets for introducing and increasing the usage of electric vehicles. Due to limited space and weight problems, water cooled, metallic bipolar plates in a fuel cell metal stack are preferred in motor vehicles. These plates are stamped metal sheets with a complex structure, interconnected media-tight. To meet the multiple tasks and requirements in use, complex and expensive combinations of materials are currently in use (carbon fiber composites, graphite, gold-plated nickel, stainless and acid resistant steel). The production of such plates is expensive as it is connected with considerable effort or the usage of precious metals. As an alternative, metalloid nitrides (CrN, VN, W2N, etc.) show a high chemical resistance, hardness and a good conductivity. So this material category meets the basic requirements of a top layer. However, the standard methods for their production (PVD, CVD) are expensive and have a slow deposition rate and a lower layer thicknesses. Because of these limitations, a full functionality over the life cycle of a bipolar plate is not guaranteed. The contribution shows the development and quantification of an alternative production process for bipolar plates. The expectation is to get significant advantages from the combination of chromium electrodeposition and thermochemical treatment to form chromium nitrides. Both processes are well researched and suitable for series production. The thermochemical treatment of the chromium layer also enables a process-integrated brazing.
title: Полемика вокруг открытия ссудных (ростовщических) касс под залог вещей в Новгороде в 70—80-е годы ХIХ века
Creators: name: Васильев, Ярослав
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: Статья посвящена отдельным вопросам деятельности ростовщиков Новгородской губернии в конце ХIХ века. Главным образом рассматривается полемика по поводу открытия ссудных касс под залог вещей, развернувшаяся между городскими властями и содержателями этих касс. Городские власти считали, что таким способом ростовщики стремятся легализовать свой промысел и всячески противились этому. Проблему обостряло отсутствие на тот момент действенной законодательной базы, позволявшей жестко контролировать ростовщичество. В статье затрагивается и проблема борьбы с ростовщичеством, например, попытки внедрения земством специальных складов для залога зерна, учреждение городских общественных ломбардов, кредитных товариществ и потребительских обществ.
Orientation dependence of the shape memory effect and superelasticity in ferromagnetic Co49Ni21Ga30 single crystals with γ'-phase particles
Creators: name: Kuksgauzen, I.V.
name: Kireeva, I.V.
name: Chumlyakov, Y.I.
name: Maier, Hans Jürgen
Publisher: name: London : Institute of Physics Publishing
Year: 2015
Subjects: subject: Cobalt
subject: Elasticity
subject: Ferromagnetic materials
subject: Ferromagnetism
subject: Gallium
subject: Gallium alloys
subject: Hysteresis
subject: Martensitic transformations
subject: Nickel
subject: Precipitation (chemical)
subject: Shape memory effect
subject: Single crystals
subject: Orientation dependence
subject: Phase particles
subject: Reversible strain
subject: Single phase
subject: Stress hysteresis
subject: Superelasticity
subject: Crystal orientation
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: This paper reports on the orientation dependence of the shape memory effect and superelasticity in [001] and [123] single-phase and aged at 623K, 1 hour single crystals of ferromagnetic Co49Ni21Ga30 (at.%) alloy with B2-L10 martensitic transformation. It was demonstrated that in single-phase crystals the values of reversible strain and the values of thermal and stress hysteresis depend on the crystal orientation. Precipitation of γ'-phase particles reduces the value of the shape memory effect and superelasticity and reduces their orientation dependence, increases the thermal and stress hysteresis in comparison with singlephase crystals.