cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
FPGA-Based Implicit-Explicit Real-time Simulation Solver for Railway Wireless Power Transfer with Nonlinear Magnetic Coupling Components
Creators: name: Xu, Han
name: Zeng, Yangbin
name: Zheng, Jialin
name: Chen, Kainan
name: Liu, Weicheng
name: Zhao, Zhengming
Publisher: name: arXiv
Year: 2023
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Railway Wireless Power Transfer (WPT) is a promising non-contact power supply solution, but constructing prototypes for controller testing can be both costly and unsafe. Real-time hardware-in-the-loop simulation is an effective and secure testing tool, but simulating the dynamic charging process of railway WPT systems is challenging due to the continuous changes in the nonlinear magnetic coupling components. To address this challenge, we propose an FPGA-based half-step implicit-explicit (IMEX) simulation solver. The proposed solver adopts an IMEX algorithm to solve the piecewise linear and nonlinear parts of the system separately, which enables FPGAs to solve nonlinear components while achieving high numerical stability. Additionally, we divide a complete integration step into two half-steps to reduce computational time delays. Our proposed method offers a promising solution for the real-time simulation of railway WPT systems. The novelty of our approach lies in the use of the IMEX algorithm and the half-step integration method, which significantly improves the accuracy and efficiency of the simulation. Our simulations and experiments demonstrate the effectiveness and accuracy of the proposed solver, which provides a new approach for simulating and optimizing railway WPT systems with nonlinear magnetic coupling components.
Adaptive Network Dynamics and Evolution of Leadership in Collective Migration
Creators: name: Pais, Darren
name: Leonard, Naomi Ehrich
Publisher: name: arXiv
Year: 2013
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: The evolution of leadership in migratory populations depends not only on costs and benefits of leadership investments but also on the opportunities for individuals to rely on cues from others through social interactions. We derive an analytically tractable adaptive dynamic network model of collective migration with fast timescale migration dynamics and slow timescale adaptive dynamics of individual leadership investment and social interaction. For large populations, our analysis of bifurcations with respect to investment cost explains the observed hysteretic effect associated with recovery of migration in fragmented environments. Further, we show a minimum connectivity threshold above which there is evolutionary branching into leader and follower populations. For small populations, we show how the topology of the underlying social interaction network influences the emergence and location of leaders in the adaptive system. Our model and analysis can describe other adaptive network dynamics involving collective tracking or collective learning of a noisy, unknown signal, and likewise can inform the design of robotic networks where agents use decentralized strategies that balance direct environmental measurements with agent interactions.
description: Submitted to Physica D: Nonlinear Phenomena
title: Основные принципы номинации улиц малого города (на примере Углича)
Creators: name: Казнина, Елена
Publisher: name: Новгородский печатный двор
Year: 2019

description: В статье представлена мотивировочная классификация современных годонимов малого города Углича. Анализ подобных имен собственных дает возможность выявить основные принципы номинации улиц малого города.
Modified methods of stellar magnetic field measurements
Creators: name: Kholtygin, A. F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The standard methods of the magnetic field measurement, based on an analysis of the relation between the Stokes $V$-parameter and the first derivative of the total line profile intensity, were modified by applying a linear integral operator $\hat{L}$ to the both sides of this relation. As the operator $\hat{L}$, the operator of the wavelet transform with DOG-wavelets is used. The key advantage of the proposed method is an effective suppression of the noise contribution to the line profile and the Stokes parameter $V$. The efficiency of the method has been studied using the model line profiles with various noise contributions. To test the proposed method, the spectropolarimetric observations of the A0-type star $α^2\,$ CVn, young O-type star $θ^1$ Ori C and A0 supergiant HD 92207 were used. The longitudinal magnetic field strengths for these stars calculated by our method appeared to be in a good agreement with those determined by other methods.
description: 11 pages, 6 figures
title: Названия-ориентиры в городском онимическом пространстве
Creators: name: Разумов, Роман
Publisher: name: Новгородский печатный двор
Year: 2019

description: Статья посвящена рассмотрению особенностей названий-ориентиров Ярославля. Цель статьи – выявить, какие объекты Ярославля служат ориентирами для горожан, и классифицировать их. Материалом для исследования послужили устные и письменные тексты, собранные и зафиксированные студентами ЯГПУ им. К.Д. Ушинского.
Der Zweite Weltkrieg und Wietzendorf
Creators: name: Lütjen, Andreas
Publisher: name: Lüneburg : Bartels Druck GmbH
Year: 2018
Subjects: subject: Wietzendorf
subject: Weltkrieg <1939-1945>
subject: Gefallener
subject: Gedenken
subject: Zweiter Weltkrieg
subject: Kriegsgefallener
subject: Gedächtnis
subject: Dewey Decimal Classification::900 | Geschichte und Geografie::940 | Geschichte Europas

description: In diesem Beitrag wird der Frage nachgegangen, wie sich der Zweite Weltkrieg in Wietzendorf und auf die dortige Bevölkerung ausgewirkt hat und wie sich das Leben der Einwohnerinnen und Einwohner, bedingt durch die geographische Randlage zwischen den Truppenübungsplätzen Bergen und Munster, durch die räumliche Nähe zum Konzentrationslager Bergen-Belsen sowie nicht zuletzt auch durch das zunächst mit sowjetischen Soldaten und später italienischen Offizieren belegte Kriegsgefangenenlager am Wietzendorfer Ortsrand, von dem in anderen Dörfern der Lüneburger Heide unterschied.
Noise characterization of a single parameter quantized charge pump
Creators: name: Hohls, Frank
name: Maire, Niels
name: Kaestner, B.
name: Pierz, Klaus
name: Schumacher, Hans W.
name: Haug, Rolf J.
Publisher: name: College Park, MD : American Institute of Physics
Year: 2009
Subjects: subject: Quantized charge pump
subject: Shot noise
subject: Single electron effects
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The shot noise of a single parameter quantized charge pump is studied. The pumped current can be varied using a control gate. Quantized current plateaus / = nefp with fp the pumping frequency and e the electron charge are observed. The shot noise is minimal for each current plateau and maximal in between. Interestingly the first expected quantized current plateau at n = 1 is missing for certain control gate voltages. We use the measured shot noise to extract the probabilities for pumping none, one or two electrons at the position of the missing step. These probabilities can be used to characterize the dynamics of the non-adiabatic pumping process. © 2009 American Institute of Physics.
title: Необоснованные урбанонимы (на примере топонимической карты Ульяновска)
Creators: name: Рассадин, Александр
name: Ильин, Вячеслав
Publisher: name: Новгородский печатный двор
Year: 2019

description: На материале топонимики современного Ульяновска проведен анализ образования и функционирования официальных уличных названий в связи с проблемой их не всегда ясной или недостаточной мотивации.
New limits on neutrino magnetic moment through non-vanishing 13-mixing
Creators: name: Guzzo, Marcelo Moraes
name: de Holanda, Pedro Cunha
name: Peres, Orlando Luis Goulart
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The relatively large value of neutrino mixing angle θ_{13} set by recent measurements allows us to use solar neutrinos to set a limit on neutrino magnetic moment involving second and third families, μ_{μτ}. The existence of a random magnetic field in solar convective zone can produce a significant anti-neutrino flux when a non-vanishing neutrino magnetic moment is assumed. Even if we consider a vanishing neutrino magnetic moment involving the first family, electron anti-neutrinos are indirectly produced through the mixing between first and third families and non-vanishing μ_{μτ}. Using KamLAND limits on the solar flux of electron anti-neutrino, we set the limit μ_{μτ} < 0.5e-11 Bohr magneton for a reasonable assumption on the behavior of solar magnetic fields. This is the first time a limit on μ_{μτ} is established in the literature directly from neutrino interaction with magnetic fields, and, interestingly enough, is comparable with the limits on neutrino magnetic moment involving the first family and with the ones coming from modifications on electroweak cross section.
description: discussion of previous limits included, references added
Touching with the alien
Creators: name: Alvarez, Aramo Olaya
Publisher: name: Zenodo
Year: 2023

description: Touching with the alien is an extreme contact lab case study to think of models of successful or unsuccessful communication of minimal messages exchanged between humans and intelligent aliens if physical touch with the alien would take place. The question of touching the alien is a provocation to start speculating about the possible differences and similarities between human Earthling and intelligent alien bodies
A STUDY ON EMPLOYEE ENGAGEMENT INITIATIVES AND ITS IMPACT ON EMPLOYEE MOTIVATION AT LARSEN & TOUBRO, CHENNAI
Creators: name: Jesilin lilly H K
Publisher: name: Zenodo
Year: 2025
Subjects: Employee Engagement, Workforce Retention, Construction, Larsen & Toubro, HR Strategies

description: Employee engagement plays a critical role in workforce retention, particularly in manufacturing industries, where skilled labor is a key asset. This study examines the employee engagement strategies at Larsen & Toubro (L&T) – Construction, Chennai, and their impact on workforce retention. The research employs a descriptive approach, gathering data through surveys and interviews with employees. The findings indicate that recognition programs, career development opportunities, and effective communication significantly enhance engagement levels, leading to higher retention rates. The study also identifies challenges such as work-life balance concerns and limited career progression opportunities. The research concludes with recommendations for improving engagement strategies to foster long-term employee retention.
A Lifetime with Camille: Exploring Authenticity Through Women's Lives in Neo-Nineteenth-Century Fiction
Creators: name: Fryer, Leah Zhuann
Publisher: name: University of Surrey
Year: 2024
Subjects: Camille Doncieux
Neo-Victorian
Claude Monet
Historical Fiction
Nineteenth-Century France
Women's Narratives

description: This thesis contains an original novel titled A Lifetime with Camille. Contemporary character Hannah discovers that she can travel through Claude Monet paintings where she befriends his first wife Camille Doncieux. Though the subject of over thirty paintings by Monet, there is very little known about Camille. After her death, Monet’s second wife disposed of all of Camille’s personal correspondence and possessions, as well as almost all photographs of her – today, only one remains. This novel gives Camille’s narrative a platform in a way that it has not been afforded before. There has been a rise of historical fiction novels centered around women’s narratives, and I examine how some of these works integrate factors of accuracy and authenticity without falsely empowering these women by filling them with anachronisms and feminist thinking from after their time. There is much to be said about accuracy and authenticity in novels that use real figures from history or are considered neo-Victorian or neo-nineteenth-century fiction, actively attempting to amplify marginalized voices. I situate my novel as neo-nineteenth century as it goes beyond the limited definition of neo-Victorian by not working with the colonial implications of the Victorian era. Through studies of nineteenth-century French societal and domestic expectations for women, other neo-nineteenth century fiction, historical fantasy novels, and Camille’s life, I argue that there is room for authors to utilize accuracy and authenticity in various ways that still stay true to both aspects of historical fiction writing while also bolstering women’s voices.
Mechanical properties and formability of en AW-7075 in cold forming processes
Creators: name: Behrens, B.-A.
name: Hübner, S.
name: Vogt, H.
name: Golovko, O.
name: Behrens, S.
name: Nürnberger, F.
Publisher: name: London [u.a.] : Institute of Physics
Year: 2020
Subjects: subject: aluminum alloy
subject: automotive body
subject: W temper state
subject: Portevin Le-Chatelier effect
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Due to a low density and high tensile strength, the aluminum alloy EN AW 7075 T6 offers a high lightweight potential for structural components. Since its formability is limited at room temperature in the T6 temper state, the potential of this alloy for automotive bodies is only utilizable by adapted deep drawing processes. In recent years, process chains suited for warm and hot forming have been researched and developed. However, warm and hot forming solutions require additional process steps and a complex tooling system in comparison to cold forming processes. Alternatively, the forming of such blanks at room temperature in the W temper state is favorable since conventional tools can be used. The W temper state is a heat treatment condition achieved after solution heat treatment and subsequent quenching, which is characterized by an increased ductility. However, this condition is unstable, due to the onset of natural ageing. With increasing time after the quenching step, the strength of the material increases, which leads to a reduction of formability. Another phenomenon that occurs after quenching is the Portevin Le-Chatelier effect. This effect causes the formation of flow lines during cold forming and results in a decrease of ductility. Hence, the objective of the investigations was to determine the formability of EN AW 7075 as a function of the natural ageing time after solution heat treatment and quenching. Therefore, tensile tests of various aged samples were carried out. The results show a relation of the formability to the natural ageing time and a dependency on the quenching rate. Furthermore, a heat treatment strategy for EN AW-7075 was developed, that considers manufacturing processes like the cathodic dip coating. The influence of the quenching rate, ageing time and temperature as well as the influence of temperature of the paint baking process after the cathodic dip coating were considered. Therefore, a design of experiments and tensile tests were carried out. Thus, the deep drawing of EN AW-7075 at room temperature is particularly promoted. © 2020 Published under licence by IOP Publishing Ltd.
Black holes in realistic branes: black string-like objects?
Creators: name: Bazeia, D.
name: da SIlva, J. M. Hoff
name: da Rocha, Roldao
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A realistic model describing a black string-like object in an expanding Universe is analyzed in the context of the McVittie's solution of the Einstein field equations. The bulk metric near the brane is provided analogously to previous solutions for black strings. In particular, we show that at least when the Hubble parameter on the brane is positive, a black string-like object seems to play a fundamental role in the braneworld scenario, generalizing the standard black strings in the context of a dynamical brane.
description: 7 pages, 6 figures, to appear in Phys. Lett. B
Polysialic acid production using Escherichia coli K1 in a disposable bag reactor
Creators: name: De Vries, Ingo
name: Busse, Christoph
name: Kopatz, Jens
name: Neumann, Harald
name: Beutel, Sascha
name: Scheper, Thomas
Publisher: name: Weinheim : Wiley-VCH Verlag
Year: 2017
Subjects: subject: Disposable bag reactor
subject: Escherichia coli K1
subject: Oxygen limitation
subject: Polysialic acid
subject: Stirred tank reactor
subject: Cell membranes
subject: Mixing
subject: Oxygen
subject: Proteins
subject: Tanks (containers)
subject: Degree of polymerization
subject: Exponential growth phase
subject: Regulatory requirements
subject: Stirred tank reactors
subject: Total protein concentration
subject: Escherichia coli
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Polysialic acid (polySia), consisting of α-(2,8)-linked N-acetylneuraminic acid monomers plays a crucial role in many biological processes. This study presents a novel process for the production of endogenous polySia using Escherichia coli K1 in a disposable bag reactor with wave-induced mixing. Disposable bag reactors provide easy and fast production in terms of regulatory requirements as GMP, flexibility, and can easily be adjusted to larger production capacities not only by scale up but also by parallelization. Due to the poor oxygen transfer rate compared to a stirred tank reactor, pure oxygen was added during the cultivation to avoid oxygen limitation. During the exponential growth phase the growth rate was 0.61 h−1. Investigation of stress-related product release from the cell surface showed no significant differences between the disposable bag reactor with wave-induced mixing and the stirred tank reactor. After batch cultivation a cell dry weight of 6.8 g L−1 and a polySia concentration of 245 mg L−1 were reached. The total protein concentration in the supernatant was 132 mg L−1. After efficient and time-saving downstream processing characterization of the final product showed a protein content of below 0.04 mgprotein/gpolySia and a maximal chain length of ∼90 degree of polymerization. This is the peer reviewed version of the following article: de Vries, I.; Busse, C.; Kopatz, J.; Neumann, H.; Beutel, S.; Scheper, T.: Polysialic acid production using Escherichia coli K1 in a disposable bag reactor. In: Engineering in Life Sciences (2017), which has been published in final form at https://doi.org/10.1002/elsc.201600220. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
title: Ктематоним в рекламном тексте (на материале наименований часов российского производства)
Creators: name: Болеста-Врона, Божена
name: Врона, Януш
Publisher: name: Новгородский печатный двор
Year: 2019

description: В работе рассмотрено употребление ктематонимов в текстах, рекламирующих часы российского производства. Проанализированы функции ктематонимов в заголовке и слогане – наиболее информативных элементах рекламного текста. Охарактеризовано место ктематонима в реализуемых моделях заголовка и слогана.
title: Антропоним как элемент образа персонажа (на материале сборника рассказов Ю. Буйды «Прусская невеста»)
Creators: name: Гиржева, Галина
name: Заика, Владимир
Publisher: name: Новгородский печатный двор
Year: 2019

description: В статье представлен результат анализа более трехсот антропонимов, встречающихся в текстах цикла рассказов Юрия Буйды «Прусская Невеста». Определена роль антропонима в структуре образа персонажа с учетом значимости события наименования в сюжете рассказа. Приведена типология антропонимов, описаны особенности мотивировки и подчеркиваемые в прозвище признаки персонажа.
Entwicklung eines Planungssystems zur Erstellung von Stundenplänen an allgemeinbildenden Schulen Deutschlands
Creators: name: Wöllenstein, Christian
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2010
Subjects: subject: Stundenplanerstellung
subject: allgemeinbildende Schulen
subject: gemischtganzzahlige Programmierung
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::370 | Erziehung, Schul- und Bildungswesen

description: [no abstract]
Das ästhetische Betriebsinventar : Entwicklung und Erprobung einer EDV-gestützten Methode zur Erfassung und Bewertung der Beiträge landwirtschaflticher Betriebe zum ästhetischen Wert der Landschaft
Creators: name: Blumentrath, Stefan
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2010
Subjects: subject: Landschaftsästhetik
subject: multifunktionale und nachhaltige Landwirtschaft
subject: GIS
subject: multikriterielle Indikatorensysteme
subject: Bewertungsmethode
subject: Dewey Decimal Classification::700 | Künste, Bildende Kunst allgemein::710 | Landschaftsgestaltung, Raumplanung

description: [no abstract]
Limodorum abortivum
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: L. abortivum (L.) Sw. Cat. 340. Die Angabe vom Col de Cou bezieht sich auf die Savoyer Seite dieses Passes. Bis etwa 1500 m. l: Unter Mayen, nordwestlich Vionnaz, 570-600 m (Defago); Bois Noir (Marietan); Evionnaz (idem); Les Chablets unter Ravoire (F.); Le Rosel (Garns). - 2: Ob Fully, bis 1270 m (Garns); bei Saillon (Garns, Thommen); Foret de la Fada ob Ardon (Marietan, Terretaz, Villaret); zwischen Ayen und der Chapelle du St-Bernard (Villaret und Mlle Kraut); Ufer der Marge zwischen Chäteauneuf und Chätroz (Marietan); ob Daillon beim Font du Diable (Marietan, Thommen); Montorge bei Sitten (IVtarietan); Tal der Sionne (idem); Dröne (idem); unter Grimisuat (idem); Ayent (Besse, M:arietan); Tal der Liene (Marietan); unter Icogne (idem); Flanthey-Lens (Gsell); Valen§on (Besse); bei]V[ontana (Coquoz); Geronde bei Siders (Huber); Salgesch (IVtarietan);ob Leuk (Gsell); Leuk-Albinen (Becherer); Schwingiboden ob Gampel (D. Dutoit); beim Bahnhof Hohtenn und gegen Tatz, bis 1250 m (Zwicky); Tälwald ob Ausserberg, etwa 1500 m (idem). - 3: Sembrancher-Vence, mehrfach (Gsell); Orsieres-Verlonaz am «Torrent des Formis», etwa 940 m (Kleiner); Saxon (Koller); Bramois-Erbioz (Wille); «Niouc-Vissoie» (Schröter); unter Zeneggen östlich der «Grube» (Thommen); «in den Erichen» ob Neubrück (Stehler); Oberstalden (Rikli); östlichVisp (Thommen).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
title: Лингвопрагматический аспект антропонимов в художественном тексте
Creators: name: Хвесько, Тамара
name: Третьякова, Светлана
Publisher: name: Новгородский печатный двор
Year: 2019

description: В статье рассматривается прагматический аспект антропонимов в художественном тексте как один из значимых факторов в прагматике литературного произведения. Имена некоторых персонажей Дж. К. Роулинг позволяют говорить о том, что номинация литературных персонажей мотивирована авторским замыслом и носит креативный характер.
MetisFL: An Embarrassingly Parallelized Controller for Scalable & Efficient Federated Learning Workflows
Creators: name: Stripelis, Dimitris
name: Anastasiou, Chrysovalantis
name: Toral, Patrick
name: Asghar, Armaghan
name: Ambite, Jose Luis
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: A Federated Learning (FL) system typically consists of two core processing entities: the federation controller and the learners. The controller is responsible for managing the execution of FL workflows across learners and the learners for training and evaluating federated models over their private datasets. While executing an FL workflow, the FL system has no control over the computational resources or data of the participating learners. Still, it is responsible for other operations, such as model aggregation, task dispatching, and scheduling. These computationally heavy operations generally need to be handled by the federation controller. Even though many FL systems have been recently proposed to facilitate the development of FL workflows, most of these systems overlook the scalability of the controller. To meet this need, we designed and developed a novel FL system called MetisFL, where the federation controller is the first-class citizen. MetisFL re-engineers all the operations conducted by the federation controller to accelerate the training of large-scale FL workflows. By quantitatively comparing MetisFL against other state-of-the-art FL systems, we empirically demonstrate that MetisFL leads to a 10-fold wall-clock time execution boost across a wide range of challenging FL workflows with increasing model sizes and federation sites.
description: 15 pages, 11 figures, Accepted at DistributedML '23
Die Adsorption argonhaltiger Gasgemische
Creators: name: Scheuch, Sven
Publisher: name: Hannover : Universität
Year: 2002
Subjects: subject: Argon mixtures
subject: adsorption equilibrium
subject: total desorption method
subject: concentration profiles
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Information, Estimation, and Lookahead in the Gaussian channel
Creators: name: Venkat, Kartik
name: Weissman, Tsachy
name: Carmon, Yair
name: Shamai, Shlomo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We consider mean squared estimation with lookahead of a continuous-time signal corrupted by additive white Gaussian noise. We show that the mutual information rate function, i.e., the mutual information rate as function of the signal-to-noise ratio (SNR), does not, in general, determine the minimum mean squared error (MMSE) with fixed finite lookahead, in contrast to the special cases with 0 and infinite lookahead (filtering and smoothing errors), respectively, which were previously established in the literature. We also establish a new expectation identity under a generalized observation model where the Gaussian channel has an SNR jump at $t=0$, capturing the tradeoff between lookahead and SNR. Further, we study the class of continuous-time stationary Gauss-Markov processes (Ornstein-Uhlenbeck processes) as channel inputs, and explicitly characterize the behavior of the minimum mean squared error (MMSE) with finite lookahead and signal-to-noise ratio (SNR). The MMSE with lookahead is shown to converge exponentially rapidly to the non-causal error, with the exponent being the reciprocal of the non-causal error. We extend our results to mixtures of Ornstein-Uhlenbeck processes, and use the insight gained to present lower and upper bounds on the MMSE with lookahead for a class of stationary Gaussian input processes, whose spectrum can be expressed as a mixture of Ornstein-Uhlenbeck spectra.
description: 30 pages, 10 figures, submitted to IEEE Transactions on Information Theory
Dynamics, CO depletion, and deuterium fractionation of the dense condensations within the fragmented prestellar core Orion B9-SMM 6
Creators: name: Miettinen, Oskari
name: Offner, Stella S. R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present APEX observations of C17O(2-1), N2H+(3-2), and N2D+(3-2) towards the subfragments inside the prestellar core SMM 6 in Orion B9. We combined these spectral line data with our previous SABOCA 350-μm dust continuum map of the source. The subfragments are characterised by subsonic internal non-thermal motions (σNT~0.5cs), and most of them appear to be gravitationally bound. The dispersion of the N2H+ velocity centroids among the condensations is very low (0.02 km/s). The CO depletion factors we derive, fD=0.8+/-0.4 - 3.6+/-1.5, do not suggest any significant CO freeze-out but this may be due to the canonical CO abundance we adopt. The fractional abundances of N2H+ and N2D+ with respect to H2 are found to be ~0.9-2.3x10^-9 and ~4.9-9.9x10^-10, respectively. The deuterium fractionation of N2H+, or the N2D+/N2H+ column density ratio, lies in the range 0.30+/-0.07 - 0.43+/-0.09. The detected substructure inside SMM 6 is likely the result of cylindrical Jeans-type gravitational fragmentation. We estimate the timescale for this fragmentation to be ~1.8x10^5 yr. The condensations are unlikely to be able to interact with one another and coalesce before local gravitational collapse ensues. Moreover, significant mass growth of the condensations via competitive-like accretion from the parent core seems unfeasible. The high level of molecular deuteration in the condensations suggests that gas-phase CO should be strongly depleted. It also points towards an advanced stage of chemical evolution. The subfragments of SMM 6 might therefore be near the onset of gravitational collapse, but whether they can form protostellar or substellar objects (brown dwarfs) depends on the local star formation efficiency and remains to be clarified.
description: Accepted to A&A; 12 pages, 3 figures, 5 tables
Untersuchung der Sulfatierung und Desulfatierung von Stickoxidspeichermaterialien für NOx-Speicher-Reduktions-Katalysatoren
Creators: name: Resch, Stefan
Publisher: name: Hannover : Universität
Year: 2002
Subjects: subject: Automotive catalyst
subject: nitrous oxides
subject: sulfur
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
A constrained minimization problem related to two coupled pseudo-relativistic Hartree equations
Creators: name: Wang, Wenqing
name: Zeng, Xiaoyu
name: Zhou, Huan-Song
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 35J50, 35J61, 35R11

description: We are concerned with the following constrained minimization problem: $$e(a_{1},a_{2},β) := \inf\left\{E_{a_{1},a_{2},β}(u_{1},u_{2}): \|u_{1}\|_{L^{2}(\mathbb{R}^{3})} = \|u_{2}\|_{L^{2}(\mathbb{R}^{3})} = 1\right\},$$ where $E_{a_{1},a_{2},β}$ is the energy functional associated to two coupled pseudo-relativistic Hartree equations involving three parameters $a_{1}, a_{2}, β$ and two trapping potentials $V_1(x)$ and $V_2(x)$. In this paper, we obtain the existence of minimizers of $e(a_{1},a_{2},β)$ for possible $a_{1}, a_{2}$ and $β$ under suitable conditions on the potentials, which generalizes the results of the papers [16,17,18] in different senses.
description: 32 pages
How does star formation proceed in the circumnuclear starburst ring of NGC 6951?
Creators: name: van der Laan, T. P. R.
name: Schinnerer, E.
name: Emsellem, E.
name: Hunt, L. K.
name: McDermid, R. M.
name: Liu, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Gas inflowing along stellar bars is often stalled at the location of circumnuclear rings, that form an effective reservoir for massive star formation and thus shape the central regions of galaxies. However, how exactly star formation is proceeding within these circumnuclear starburst rings is subject of debate. Two main scenarios for this process have been put forward: In the first the onset of star formation is regulated by the total amount of gas present in the ring with star forming starting once a mass threshold has reached in a `random' position within the ring like `popcorn'. In the second star formation preferentially takes place near the locations where the gas enters the ring. This scenario has been dubbed `pearls-on-a-string'. Here we combine new optical IFU data covering the full stellar bar with existing multi-wavelength data to study in detail the 580 pc radius circumnuclear starburst ring in the nearby spiral galaxy NGC 6951. Using HST archival data together with Sauron and Oasis IFU data, we derive the ages and stellar masses of star clusters as well as the total stellar content of the central region. Adding information on the molecular gas distribution, stellar and gaseous dynamics and extinction, we find that the circumnuclear ring in NGC 6951 is ~1-1.5 Gyr old and has been forming stars for most of that time. We see evidence for preferred sites of star formation within the ring, consistent with the `pearls-on-a-string' scenario, when focusing on the youngest stellar populations. Due to the ring's longevity this signature is washed out when older stellar populations are included in the analysis.
description: accepted for publication in A&A, 15 pages
Chandra observations of SN 1987A: the soft X-ray light curve revisited
Creators: name: Helder, E. A.
name: Broos, P. S.
name: Dewey, D.
name: Dwek, E.
name: McCray, R.
name: Park, S.
name: Racusin, J. L.
name: Zhekov, S. A.
name: Burrows, D. N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on the present stage of SN 1987A as observed by the Chandra X-ray Observatory. We reanalyze published Chandra observations and add three more epochs of Chandra data to get a consistent picture of the evolution of the X-ray fluxes in several energy bands. We discuss the implications of several calibration issues for Chandra data. Using the most recent Chandra calibration files, we find that the 0.5-2.0 keV band fluxes of SN 1987A have increased by ~6 x 10 ^-13 erg s^-1 cm^-2 per year since 2009. This is in contrast with our previous result that the 0.5-2.0 keV light curve showed a sudden flattening in 2009. Based on our new analysis, we conclude that the forward shock is still in full interaction with the equatorial ring.
description: Accepted for publication by ApJ, 7 pages, 5 figures
The place of the Sun among the Sun-like stars
Creators: name: Shapiro, A. I.
name: Schmutz, W.
name: Cessateur, G.
name: Rozanov, E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context. Monitoring of the photometric and chromospheric HK emission data series of stars similar to the Sun in age and average activity level showed that there is an empirical correlation between the average stellar chromospheric activity level and the photometric variability. In general, more active stars show larger photometric variability. Interestingly, the measurements and reconstructions of the solar irradiance show that the Sun is significantly less variable than indicated by the empirical relationship. Aims. We aim to identify possible reasons for the Sun to be currently outside of this relationship. Methods. We employed different scenarios of solar HK emission and irradiance variability and compared them with available time series of Sun-like stars. Results. We show that the position of the Sun on the diagram of photometric variability versus chromospheric activity changes with time. The present solar position is different from its temporal mean position as the satellite era of continuous solar irradiance measurements has accidentally coincided with a period of unusually high and stable solar activity. Our analysis suggests that although present solar variability is significantly smaller than indicated by the stellar data, the temporal mean solar variability might be in agreement with the stellar data. We propose that the continuation of the photometric program and its expansion to a larger stellar sample will ultimately allow us to constrain the historical solar variability.
description: 10 pages, 5 figures, accepted for publication in Astronomy&Astrophysics
Transkriptomanalyse verschiedener Morphotypen von Pseudomonas aeruginosa, isoliert von Patienten mit Cystischer Fibrose
Creators: name: Götz, Franz Von
Publisher: name: Hannover : Universität
Year: 2003
Subjects: subject: Pseudomonas aeruginosa
subject: small colony variant
subject: cystic fibrosis
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]
title: Quantifying resilience and the risk of regime shifts under strong correlated noise
Creators: name: Heßler, Martin
name: Kamps, Oliver
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2023
Subjects: subject: 530 Physics

description: Early warning indicators often suffer from the shortness and coarse-graining of real-world time series. Furthermore, the typically strong and correlated noise contributions in real applications are severe drawbacks for statistical measures. Even under favourable simulation conditions the measures are of limited capacity due to their qualitative nature and sometimes ambiguous trend-to-noise ratio. In order to solve these shortcomings, we analyze the stability of the system via the slope of the deterministic term of a Langevin equation, which is hypothesized to underlie the system dynamics close to the fixed point. The open-source available method is applied to a previously studied seasonal ecological model under noise levels and correlation scenarios commonly observed in real world data. We compare the results to autocorrelation, standard deviation, skewness, and kurtosis as leading indicator candidates by a Bayesian model comparison with a linear and a constant model. We show that the slope of the deterministic term is a promising alternative due to its quantitative nature and high robustness against noise levels and types. The commonly computed indicators apart from the autocorrelation with deseasonalization fail to provide reliable insights into the stability of the system in contrast to a previously performed study in which the standard deviation was found to perform best. In addition, we discuss the significant influence of the seasonal nature of the data to the robust computation of the various indicators, before we determine approximately the minimal amount of data per time window that leads to significant trends for the drift slope estimations.
description: Finanziert durch den Open-Access-Publikationsfonds der Westfälischen Wilhelms-Universität Münster (WWU Münster).
Magnetism in AV3Sb5 (Cs, Rb, K): Origin and Consequences for the Strongly Correlated Phases
Creators: name: Hasan, Md. Nur
name: Bharati, Ritadip
name: Hellsvik, Johan
name: Delin, Anna
name: Pal, Samir Kumar
name: Bergman, Anders
name: Sharma, Shivalika
name: Di Marco, Igor
name: Pereiro, Manuel
name: Thunstrom, Patrik
name: Oppeneer, Peter M.
name: Eriksson, Olle
name: Karmakar, Debjani
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The V-based kagome systems AV3Sb5 (A = Cs, Rb and K) are unique by virtue of the intricate interplay of non-trivial electronic structure, topology and intriguing fermiology, rendering them to be a playground of many mutually dependent exotic phases like charge-order and superconductivity. Despite numerous recent studies, the interconnection of magnetism and other complex collective phenomena in these systems has yet not arrived at any conclusion. Using first-principles tools, we demonstrate that their electronic structures, complex fermiologies and phonon dispersions are strongly influenced by the interplay of dynamic electron correlations, non-trivial spin-polarization and spin-orbit coupling. An investigation of the first-principles-derived inter-site magnetic exchanges with the complementary analysis of q-dependence of the electronic response functions and the electron-phonon coupling indicate that the system conforms as a frustrated spin-cluster, where the occurrence of the charge-order phase is intimately related to the mechanism of electron-phonon coupling, rather than the Fermi-surface nesting.
description: Accepted in Physical Review Letters
Stellar Diameters and Temperatures III. Main Sequence A, F, G, & K Stars: Additional high-precision measurements and empirical relations
Creators: name: Boyajian, Tabetha S.
name: von Braun, Kaspar
name: van Belle, Gerard
name: Farrington, Chris
name: Schaefer, Gail
name: Jones, Jeremy
name: White, Russel
name: McAlister, Harold A.
name: Brummelaar, Theo A. ten
name: Ridgway, Stephen
name: Gies, Douglas
name: Sturmann, Laszlo
name: Sturmann, Judit
name: Turner, Nils H.
name: Goldfinger, P. J.
name: Vargas, Norm
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Based on CHARA Array measurements, we present the angular diameters of 23 nearby, main- sequence stars, ranging from spectral type A7 to K0, five of which are exoplanet host stars. We derive linear radii, effective temperatures, and absolute luminosities of the stars using HIPPARCOS parallaxes and measured bolometric fluxes. The new data are combined with previously published values to create an Angular Diameter Anthology of measured angular diameters to main-sequence stars (luminosity class V and IV). This compilation consists of 125 stars with diameter uncertainties of less than 5%, ranging in spectral types from A to M. The large quantity of empirical data are used to derive color-temperature relations to an assortment of color indices in the Johnson (BVRIJHK), Cousins (RI), Kron (RI), Sloan (griz), and WISE (W3W4) photometric systems. These relations have an average standard deviation of ~3% and are valid for stars with spectral types A0 to M4. To derive even more accurate relations for Sun-like stars, we also determined these temperature relations omitting early-type stars (Teff > 6750 K) that may have biased luminosity estimates because of rapid rotation; for this subset the dispersion is only ~2.5%. We find effective temperatures in agreement within a couple percent for the interferometrically characterized sample of main sequence stars compared to those derived via the infrared-flux method and spectroscopic analysis.
description: Accepted for Publication in ApJ
Magnetism in AV3Sb5 (A = Cs, Rb, K): Complex Landscape of the Dynamical Magnetic Textures
Creators: name: Karmakar, Debjani
name: Pereiro, Manuel
name: Hasan, Md. Nur
name: Bharati, Ritadip
name: Hellsvik, Johan
name: Delin, Anna
name: Pal, Samir Kumar
name: Bergman, Anders
name: Sharma, Shivalika
name: Di Marco, Igor
name: Thunstrom, Patrik
name: Oppeneer, Peter M.
name: Eriksson, Olle
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have investigated the dynamical magnetic properties of the V-based kagome stibnite compounds by combining the ab-initio calculated magnetic parameters of a spin Hamiltonian like inter-site exchange parameters, magnetocrystalline anisotropy and site projected magnetic moments, with full-fledged simulations of atomistic spin-dynamics. Our calculations reveal that in addition to a ferromagnetic order along the [001] direction, the system hosts a complex landscape of magnetic configurations comprised of commensurate and incommensurate spin-spirals along the [010] direction. The presence of such chiral magnetic textures may be the key to solve the mystery about the origin of the experimentally observed inherent breaking of the C6 rotational symmetry- and the time-reversal symmetry.
description: Accepted In Physical Review B
Untersuchung der differenziellen Genexpression in sensorischen und motorischen Nervenästen des peripheren Nervensystems
Creators: name: Karsak, Meliha
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: PNS
subject: regeneration
subject: differential display
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
Spiranthes spiralis
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: S.spiralis (L.) Chevallier (S. autumnalis [Balbis] Rich.) Cat. 342. l:~Zwischen Choex und Daviaz (Defago 1936) (damit die Angabe von d'Angreville, Fl.Vallais, S.128 [1862] bestätigt); Medettaz bei Salvan (Wurgler 1952).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
title: Ksenija Vinski-Gasparini: Urnenfelderkultur in Nordkroatien (Kultura Polja sa Žarama u Sjevernoj Hrvatskoj). Zadar 1973
Creators: name: Kimmig, Wolfgang
Publisher: name: University Library Heidelberg
Year: 2015

description: Rezension zu: Ksenija Vinski-Gasparini: Urnenfelderkultur in Nordkroatien (Kultura Polja sa Žarama u Sjevernoj Hrvatskoj). Sveučilište u Zagrebu Filozofski Fakultet — Zadar. Monografije 1, 1973. 230 Seiten, 137 Tafeln, 6 Typentafeln und 1 Chronologietabelle.
Großräumige, radarinterferometrische Erfassung von Höhenänderungen außerhalb des prognostizierten Einwirkungsbereiches von aktiven und stillgelegten Steinkohlebergwerken
Creators: name: Busch, Wolfgang
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2019
Subjects: subject: Bodenbewegungen
subject: Radarinterferometrie
subject: Persistent Scatterer Interferometrie
subject: Steinkohlenbergbau
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::624 | Ingenieurbau und Umwelttechnik

description: Im Rahmen eines größeren Untersuchungsprojektes, das durch die Bezirksregierung Arnsberg, Abteilung Bergbau und Energie in NRW, in Auftrag gegeben wurde, hat das IGMC mittels der radarinterferometrischen PSI-Auswertemethode die Bodenbewegungen im Bereich von zwei aktiven und fünf, in jüngerer Zeit stillgelegten Steinkohlenbergwerken der RAG AG untersucht. Die Untersuchungszeiträume erstreckten sich bergwerksspezifisch über 7 – 12 Jahre. Zur Verfügung standen Radarszenen der Satelliten ENVISAT und Radarsat-2. In Summe wurde eine Gesamtfläche von über 2300 km^2 radarinterferometrisch ausgewertet. In diesem Beitrag werden in erster Linie die für die radarinterferometrische Auswertungen relevante Zielsetzung, Vorgehensweise sowie ausgewählte Ergebnisse und Erfahrungen dargestellt. Weitere, darüber hinaus gehende Ergebnisse sind in insgesamt 8 umfangreichen und öffentlich zugänglichen Publikationen (siehe Busch et al. 2018) veröffentlicht.
Differentielle Effekte von Ceramiden auf verschiedene Isoformen der Adenylyl Cyclase
Creators: name: Bösel, Angela
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: Adenylyl cyclase type II
subject: ceramide
subject: phorbolester
subject: ocadaic acid
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]