cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fisheries harvest management procedures under time-varying productivity
Creators: name: Licandeo, Roberto
Publisher: name: University of British Columbia
Year: 2020

description: Fish stocks often show persistent changes in fish production with hypothesized causes including time-varying recruit parameters, natural mortality of mature fish, and somatic growth. Changes in fish productivity can affect biological reference points and the expected robustness of harvest strategies in meeting long-term conservation and economic objectives. Current assessment approaches commonly assume “stationarity” in stock-recruit parameters and implemented harvest strategies commonly lack consideration of changes in fish productivity. This dissertation covers three studies based on statistical analysis and simulation methods that aim to advance understanding of time-varying stock-recruit parameters and harvest control rules (HCRs) to cope with changes in fish production. Chapter 2 examined the performance of a Kalman filter algorithm that estimates dynamic state variables (e.g., changing stock-recruit parameters) from inaccurate observations obtained from stock assessment outputs. In Chapter 3, stochastic optimization in policy space (SOPS) was used to find an optimal HCR that is robust to changes in productivity under closed-loop simulation or management strategy evaluation (MSE). By using SOPS and a simple population dynamics model, this chapter examined optimal HCRs under different types of regime shifts (e.g., changes in carrying capacity and intrinsic growth rates). Chapter 4 examined empirical HCRs in an extreme situation of “non-stationarity” in stock-recruit parameters (i.e., a spasmodic recruitment pattern), using Atlantic redfish stocks as a case-study. The Kalman filter detected the overall trend in the stock-recruit parameters over time. Also, it was found that optimal HCRs depend on the timing of biomass estimates relative to harvest, observation error, intrinsic population growth, and regime shifts types. In the case of spasmodic stocks, it was found that simple HCRs that used data from well-designed fishery-independent resource surveys were capable of handling changes in productivity. The present dissertation shows the importance of well-designed fishery-independent surveys and simple HCRs for tackling changes in productivity and guidelines are provided for developing HCRs that are robust to the occurrence of such changes. The models and findings presented here can be applied to improve the management of other stocks that show persistent changes in fish productivity.
Imprints of anisotropic inflation on the cosmic microwave background
Creators: name: Watanabe, Masa-aki
name: Kanno, Sugumi
name: Soda, Jiro
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the imprints of anisotropic inflation on the CMB temperature fluctuations and polarizations. The statistical anisotropy stems not only from the direction dependence of curvature and tensor perturbations, but also from the cross correlation between curvature and tensor perturbations, and the linear polarization of tensor perturbations. We show that off-diagonal $TB$ and $EB$ spectrum as well as on- and off-diagonal $TT, EE, BB, TE$ spectrum are induced from anisotropic inflation. We emphasize that the off-diagonal spectrum induced by the cross correlation could be a characteristic signature of anisotropic inflation.
description: 5 pages, 2 figures;(v2) references added;(v3) replaced with the version accepted by MNRAS Letters
title: Eine frühe Dokumentation des Holocaust in Ungarn. Die »Untersuchungskommission zur Erforschung und Bekanntmachung der von den Nationalsozialisten und Pfeilkreuzlern verübten Verbrechen« (1945)
Creators: name: Fritz, Regina
name: Zentrum Für Zeithistorische Forschung
Publisher: name: ZZF - Centre for Contemporary History
Year: 2017

description: Zeithistorische Forschungen
Two particle-picking procedures for filamentous proteins: SPHIRE-crYOLO filament mode and SPHIRE-STRIPER
Creators: name: Wagner, Thorsten
name: Lusnig, Luca
name: Pospich, Sabrina
name: Stabrin, Markus
name: Schönfeld, Fabian
name: Raunser, Stefan
Publisher: name: FID GEO
Year: 2020

description: Structure determination of filamentous molecular complexes involves the selection of filaments from cryo-EM micrographs. The automatic selection of helical specimens is particularly difficult, and thus many challenging samples with issues such as contamination or aggregation are still manually picked. Here, two approaches for selecting filamentous complexes are presented: one uses a trained deep neural network to identify the filaments and is integrated in SPHIRE-crYOLO, while the other, called SPHIRE-STRIPER, is based on a classical line-detection approach. The advantage of the crYOLO-based procedure is that it performs accurately on very challenging data sets and selects filaments with high accuracy. Although STRIPER is less precise, the user benefits from less intervention, since in contrast to crYOLO, STRIPER does not require training. The performance of both procedures on Tobacco mosaic virus and filamentous F-actin data sets is described to demonstrate the robustness of each method.
Stokes' theorem, volume growth and parabolicity
Creators: name: Valtorta, Daniele
name: Veronelli, Giona
Publisher: name: arXiv
Year: 2010
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 31C12, 53C43

description: We present some new Stokes' type theorems on complete non-compact manifolds that extend, in different directions, previous work by Gaffney and Karp and also the so called Kelvin-Nevanlinna-Royden criterion for (p-)parabolicity. Applications to comparison and uniqueness results involving the p-Laplacian are deduced.
description: 15 pages. Corrected typos. Accepted for publication in Tohoku Mathematical Journal
Instability of black hole formation in gravitational collapse
Creators: name: Joshi, Pankaj S.
name: Malafarina, Daniele
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider here the classic scenario given by Oppenheimer, Snyder, and Datt, for the gravitational collapse of a massive matter cloud, and examine its stability under the introduction of small tangential stresses. We show, by offering an explicit class of physically valid tangential stress perturbations, that an introduction of tangential pressure, however small, can qualitatively change the final fate of collapse from a black hole final state to a naked singularity. This shows instability of black hole formation in collapse and sheds important light on the nature of cosmic censorship hypothesis and its possible formulations. The key effect of these perturbations is to alter the trapped surface formation pattern within the collapsing cloud and the apparent horizon structure. This allows the singularity to be visible, and implications are discussed.
description: 5 pages
title: Ð¯Ð²Ð»ÐµÐ½Ð¸Ðµ ÑÐ¸Ð½Ñ ÑÐ¾Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð² Ð½ÐµÐ»Ð¸Ð½ÐµÐ¹Ð½ÑÑ ÑÐ¸ÑÑÐµÐ¼Ð°Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Synchronization Phenomenon in Nonlinear Systems
Creators: name: ÐÐ°ÑÑÑÐ°ÐºÐ¾Ð², ÐÐ»ÐµÐºÑÐ°Ð½Ð´Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: ÑÐ²Ð»ÐµÐ½Ð¸Ðµ ÑÐ¸Ð½Ñ ÑÐ¾Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸
ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ðµ Ð°Ð´Ð»ÐµÑÐ°
ÑÑ ÐµÐ¼Ð° simulink
synchronization phenomenon
adler equation
simulink scheme

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¸Ð·Ð»Ð¾Ð¶ÐµÐ½Ð¾ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ðµ ÑÐ²Ð»ÐµÐ½Ð¸Ñ ÑÐ¸Ð½ÑÑÐ¾Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ Ð² Ð½ÐµÐ»Ð¸Ð½ÐµÐ¹Ð½ÑÑ ÑÐ¸ÑÑÐµÐ¼Ð°Ñ, ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ ÑÐ°Ð·Ð½ÑÐµ Ð²Ð°ÑÐ¸Ð°Ð½ÑÑ ÑÐ¸ÑÑÐµÐ¼. ÐÐ°Ð½Ñ Ð¾Ð±ÑÐ¸Ðµ Ð¿Ð¾Ð½ÑÑÐ¸Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÐµÐ¼ÑÑ ÑÐµÑÐ¼Ð¸Ð½Ð¾Ð². ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐ¸ÑÑÐµÐ¼ Ð¸ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð² Ð´Ð»Ñ ÐºÐ¾ÑÑÐµÐºÑÐ½Ð¾Ð³Ð¾ ÑÐµÑÐµÐ½Ð¸Ñ Ð·Ð°Ð´Ð°Ñ.
description: In this paper, a description of the phenomenon of synchronization in nonlinear systems is presented, different versions of systems are considered. General concepts of the terms used are given. The analysis of systems and parameters for the correct solution of problems is carried out.
title: Der (damalige) Geschmack der Bourgeoisie. Eine historische Re-Lektüre von Pierre Bourdieus "Die feinen Unterschiede" (1979)
Creators: name: Reinecke, Christiane
name: Zentrum Für Zeithistorische Forschung
Publisher: name: ZZF - Centre for Contemporary History
Year: 2017

description: Zeithistorische Forschungen
Reduction of Poisson-Nijenhuis Lie algebroids to symplectic-Nijenhuis Lie algebroids with nondegenerate Nijenhuis tensor
Creators: name: De Nicola, Antonio
name: Marrero, Juan Carlos
name: Padron, Edith
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53D17 (Primary) 17B62, 17B66, 37J05, 37J35, 37K10 (Secondary)

description: We show how to reduce, under certain regularities conditions, a Poisson-Nijenhuis Lie algebroid to a symplectic-Nijenhuis Lie algebroid with nondegenerate Nijenhuis tensor. We generalize the work done by Magri and Morosi for the reduction of Poisson-Nijenhuis manifolds. The choice of the more general framework of Lie algebroids is motivated by the geometrical study of some reduced bi-Hamiltonian systems. An explicit example of reduction of a Poisson-Nijenhuis Lie algebroid is also provided.
description: 35 pages, final version to appear in J. Phys. A: Math. Theor
The Canadian outdoors from the perspective of recent immigrants in Metro Vancouver : nature nurtures newcomers
Creators: name: Ono, Aspen Joy
Publisher: name: University of British Columbia
Year: 2020

description: People are increasingly alienated from nature, which can reduce human well-being, pro-environmental behavior, and emotional connection to the natural world (Soga & Gaston, 2016). In an era marked by climate change and ecological collapse, understanding, reinforcing, and facilitating socioecological interactions can support and advance human and environmental well-being. Such a transition requires widespread individual and collective buy-in and action for transformative structural change. Despite this need for widespread environmental protection, immigrants have historically been excluded from natural spaces and from the project of environmental sustainability (Kloek et al., 2015; Kloek et al., 2013). To promote pro-environmental behavior and support the well-being of Metro Vancouver’s immigrant population, it is essential to analyze this population’s relationships to nature, particularly in Canada. Lived experiences, sociocultural norms, and familiarity with nature affect an individual’s relationship to and value of nature and a particular natural space (Chan et al., 2016). Research demonstrates that immigrants from diverse cultural and ethnic backgrounds display unique use patterns and relationships to their host country’s natural spaces (Jay & Schraml 2009; Kloek et al., 2013; Rishbeth & Finney, 2006). Understanding immigrants’ values of and interactions with outdoor spaces requires identifying the meanings, benefits, and capabilities that arise from their socio-ecological interactions. This research aimed to characterize the relationship that some recent immigrants to Metro Vancouver had to the area’s natural spaces. Using 27 qualitative semi-structured interviews and oral background surveys, this study aimed to consider the ways in which recent immigrants used, perceived, and derived value from their relationships with nature in Canada. Respondents emphasized that nature supported a unique set of ecosystem services that facilitated their acculturation, adaptation, and socialization into Canada and Canadian society. These perceived benefits suggest that acculturation may be a new category of cultural ecosystem services that newcomers derive from interactions with their host country’s nature. This research is an initial step towards understanding the web of values and services that immigrant stakeholders have with nature in Metro Vancouver. Such an understanding can facilitate a more inclusive and representative approach to social-ecological system management.
Variability of the Indian Monsoon in the Andaman Sea Across the Miocene-Pliocene Transition
Creators: name: Jöhnck, Janika
name: Kuhnt, Wolfgang
name: Holbourn, Ann
name: Andersen, Nils
Publisher: name: FID GEO
Year: 2020

description: We reconstructed the variability of the Earth's strongest hydrological system, the Indian monsoon, over the interval 6.24 to 4.91 Ma at International Ocean Discovery Program (IODP) Expedition 353 Site U1448 in the Andaman Sea. We integrated high-resolution benthic and planktic foraminiferal carbon and oxygen isotopes with Mg/Ca measurements of the mixed layer foraminifer Trilobatus sacculifer to reconstruct the isotopic composition of seawater (δ18Osw) and the gradient between planktic and benthic foraminiferal δ13C. A prominent increase in mixed layer temperatures of ~4°C occurred between 5.55 and 5.28 Ma, accompanied by a change from precession- to obliquity-driven variability in planktic δ18O and δ18Osw. We suggest that an intensified cross-equatorial transport of heat and moisture, paced by obliquity, led to increased summer monsoon precipitation during warm stages after 5.55 Ma. Transient cold stages were characterized by reduced mixed layer temperatures and summer monsoon failure, thus resembling late Pleistocene stadials. In contrast, an overall cooler background climate state with a strengthened biological pump prevailed prior to 5.55 Ma. These findings highlight the importance of internal feedback processes for the long-term evolution of the Indian monsoon.
Pertinencia de un posgrado
Creators: name: Suing, Abel
Publisher: name: Zenodo
Year: 2022
Subjects: educación
comunicación
posgrado
pertinencia
jóvenes
Universidad
Latinoamérica
desarrollo

description: Publicación en la sección de opinión del diario digital hora 32 https://hora32.com.ec/ que se edita en Loja (Ecuador)
Limit theory for some positive, stationary processes with infinite mean
Creators: name: Aaronson, Jon.
name: Zweimüller, Roland
Publisher: name: arXiv
Year: 2010
Subjects: subject: Dynamical Systems (math.DS)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60F 37A40, 60G10

description: We prove distributional limit theorems and one-sided laws of the iterated logarithm for a class of positive, mixing, stationary, stochastic processes which contains those obtained from non-integrable observables over certain piecewise expanding maps. This is done by extending Darling-Kac theory to a suitable family of infinite measure preserving transformations.
description: more results and examples
External field influence on semiflexible macromolecules: geometric coupling
Creators: name: Bellucci, Stefano
name: Mamasakhlisov, Yevgeny
name: Nersessian, Armen
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We suggested a geometric approach to address the external field influence on the DNA molecules, described by the WLC model via geometric coupling. It consists in the introduction of the effective metrics depending on the potential of the external field, with further re-definition of the arc-length parameter and of the extrinsic curvatures of the DNA molecules. It yields the nontrivial impact of the external field in the internal energy of macromolecules. We give the Hamiltonian formulation of this model and perform its preliminary analysis in the redefinition of the initial energy density.
description: 8 pages; PACS: 87.14.gk, 87.15.-v, 03.65.-w, 02.40.Ky; Keywords: macromolecules, external field, geometric coupling, worm-like chains DNA model, symplectic and Riemann geometry, relativistic quantum mechanics. Conclusions expanded; three references added
Concurrence and entanglement entropy in a dimerized spin-1/2 two-leg ladder
Creators: name: Nemati, Somayyeh
name: Mahdavifar, Saeed
name: Batebi, Saeed
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We consider the isotropic spin-1/2 two-leg ladders with the dominant spatially modulated rung exchanges. We study the effect of a uniform magnetic field on the ground state phase diagram of the model using the perturbation theory and the numerical Lanczos method. The ground state phase diagram consists of two gapless Luttinger liquid (LL) and three gapped phases. Numerically, we calculate the concurrence between two spins and entanglement entropy between legs. Numerical experiment shows that in principle the gapless LL phases are different. In the first LL phase, only spins on rungs are entangled, but in the second LL phase the spins on legs are long-distance entangled. Therefore the concurrence between spins on legs can be considered as a function to distinguish the LL phases.
description: 7 pages, 7 figures
Multimodel Analysis of Future Land Use and Climate Change Impacts on Ecosystem Functioning
Creators: name: Krause, A.
name: Haverd, V.
name: Poulter, B.
name: Anthoni, P.
name: Quesada, B.
name: Rammig, A.
name: Arneth, A.
Publisher: name: FID GEO
Year: 2019

description: Land use and climate changes both affect terrestrial ecosystems. Here, we used three combinations of Shared Socioeconomic Pathways and Representative Concentration Pathways (SSP1xRCP26, SSP3xRCP60, and SSP5xRCP85) as input to three dynamic global vegetation models to assess the impacts and associated uncertainty on several ecosystem functions: terrestrial carbon storage and fluxes, evapotranspiration, surface albedo, and runoff. We also performed sensitivity simulations in which we kept either land use or climate (including atmospheric CO2) constant from year 2015 on to calculate the isolated land use versus climate effects. By the 2080–2099 period, carbon storage increases by up to 87 ± 47 Gt (SSP1xRCP26) compared to present day, with large spatial variance across scenarios and models. Most of the carbon uptake is attributed to drivers beyond future land use and climate change, particularly the lagged effects of historic environmental changes. Future climate change typically increases carbon stocks in vegetation but not soils, while future land use change causes carbon losses, even for net agricultural abandonment (SSP1xRCP26). Evapotranspiration changes are highly variable across scenarios, and models do not agree on the magnitude or even sign of change of the individual effects. A calculated decrease in January and July surface albedo (up to −0.021 ± 0.007 and −0.004 ± 0.004 for SSP5xRCP85) and increase in runoff (+67 ± 6 mm/year) is largely driven by climate change. Overall, our results show that future land use and climate change will both have substantial impacts on ecosystem functioning. However, future changes can often not be fully explained by these two drivers and legacy effects have to be considered.
title: Mode und Film in Ost- und Westdeutschland. »Modell Bianka« (1951) und »Ingrid. Die Geschichte eines Fotomodells« (1955)
Creators: name: Ganeva, Mila
name: Zentrum Für Zeithistorische Forschung
Publisher: name: ZZF - Centre for Contemporary History
Year: 2017

description: Zeithistorische Forschungen
Impacts of a weir and power station on downstream migrating Atlantic salmon smolts in a German river
Creators: name: Havn, Torgeir B.
name: Thorstad, Eva B.
name: Borcherding, Jost
name: Heermann, Lisa
name: Teichert, Maxim A. K.
name: Ingendahl, Detlev
name: Tambets, Meelis
name: Sæther, Stein Are
name: Økland, Finn
Publisher: name: FID GEO
Year: 2020

description: Weirs are barriers built across rivers for a wide range of other purposes than hydropower production. Like hydropower installations, weirs can negatively impact fish migrations. Downstream migration and mortality of Atlantic salmon smolts were studied during passage of a weir and power station by tagging 227 smolts with radio transmitters. Extra loss of smolts due to the weir and adjacent reservoir was 5.2%. Mortality was likely related to physical damage imposed to the smolts and/or increased predation risk. Extra loss of smolts did not differ between the weir and the power station (7.2%). Migration speeds were reduced at the power station but not at the weir. We conclude that mortality at one power station site may differ considerably among years, because the mortality was more than four times higher in a previous year than in this study. Increased river discharge seemed to decrease mortality and increase migration speeds at the power station.
The anti‐inflammatory and antithrombotic properties of bioactives from orange, sanguine and clementine luices and from their remaining by‐products
Creators: name: TSOUPRAS, ALEXANDROS
Publisher: name: University of Limerick
Year: 2023
Subjects: subject: Biological sciences
subject: FOS: Biological sciences
subject: Health sciences
subject: FOS: Health sciences

description: The anti‐oxidant properties of vitamin C and of phenolic compounds of citrus fruits are well established. However, the evaluation of the anti‐inflammatory and antithrombotic potential of both vitamin C and of the more amphiphilic and lipophilic components of citrus fruits needs further attention. In this study, the anti‐inflammatory and antithrombotic properties of vitamin C and of freshly squeezed juices and their lipid bioactives from the Navalina and Sanguine orange varieties and the Clementine variety of mandarins, as well as from their remaining by‐products, were evaluated against the inflammatory and thrombotic pathways of the platelet‐activating factor (PAF) and thrombin in platelets, as well as against PAF‐biosynthesis in leukocytes. The non‐oxidized juices of these citrus fruits and a vitamin C supplement showed stronger anti‐PAF and antithrombin effects than their oxidized versions through their general anti‐oxidant effect in platelets. The total lipids (TLs) and the HPLC‐derived fractions of phenolic compounds and of polar lipid bioactives from both juices and their peels’ by‐products showed a more specific stronger inhibitory effect against the inflammatory and thrombotic pathways of PAF and thrombin in platelets, while these bioactives strongly inhibited also the specific enzyme activities of the main biosynthetic enzymes of PAF in leukocytes. The stronger bioactivity of the dietary bioactives found in the juices of these citrus fruits against specific biochemical pathways of inflammation and thrombosis seems to act with synergy with the anti‐oxidant potential of its vitamin C content, which further supports the notion that these juices are functional foods with anti‐inflammatory and protective health benefits. In addition, the presence of these dietary bioactive phenolic compounds and polar lipid bioactives in the remaining peels’ wastes further enhance the valorization of such food industry by‐products as potential sources of anti‐inflammatory bioactives to be used as ingredients for novel functional products.
Selective Degradation of End-of-Life Poly(lactide) via Alkali-Metal-Halide Catalysis
Creators: name: Alberti, Christoph
name: Damps, Nicole
name: Meißner, Roderich R. R.
name: Hofmann, Melanie
name: Rijono, Desiree
name: Enthaler, Stephan
Publisher: name: FID GEO
Year: 2019

description: Abstract The recycling of poly(lactide) (PLA) is studied. Using methanol and alkali-metal-halides as catalyst, PLA is degraded to produce methyl lactate, which is a suitable chemical for the regeneration of PLA. An excellent degree of degradation (conversions: >99%, yields: >99%) is achieved in less than 20 min utilizing microwave heating. Remarkably, PLA goods are successfully converted into methyl lactate.
Krall-Jacobi commutative algebras of partial differential operators
Creators: name: Iliev, Plamen
Publisher: name: arXiv
Year: 2010
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: We construct a large family of commutative algebras of partial differential operators invariant under rotations. These algebras are isomorphic extensions of the algebras of ordinary differential operators introduced by Grunbaum and Yakimov corresponding to Darboux transformations at one end of the spectrum of the recurrence operator for the Jacobi polynomials. The construction is based on a new proof of their results which leads to a more detailed description of the one-dimensional theory. In particular, our approach establishes a conjecture by Haine concerning the explicit characterization of the Krall-Jacobi algebras of ordinary differential operators.
description: minor changes
X-ray diffraction using focused-ion-beam-prepared single crystals
Creators: name: Weigel, Tina
name: Funke, Claudia
name: Zschornak, Matthias
name: Behm, Thomas
name: Stöcker, Hartmut
name: Leisegang, Tilmann
name: Meyer, Dirk C.
Publisher: name: FID GEO
Year: 2020

description: High-quality single-crystal X-ray diffraction measurements are a prerequisite for obtaining precise and reliable structure data and electron densities. The single crystal should therefore fulfill several conditions, of which a regular defined shape is of particularly high importance for compounds consisting of heavy elements with high X-ray absorption coefficients. The absorption of X-rays passing through a 50 µm-thick LiNbO3 crystal can reduce the transmission of Mo Kα radiation by several tens of percent, which makes an absorption correction of the reflection intensities necessary. In order to reduce ambiguities concerning the shape of a crystal, used for the necessary absorption correction, a method for preparation of regularly shaped single crystals out of large samples is presented and evaluated. This method utilizes a focused ion beam to cut crystals with defined size and shape reproducibly and carefully without splintering. For evaluation, a single-crystal X-ray diffraction study using a laboratory diffractometer is presented, comparing differently prepared LiNbO3 crystals originating from the same macroscopic crystal plate. Results of the data reduction, structure refinement and electron density reconstruction indicate qualitatively similar values for all prepared crystals. Thus, the different preparation techniques have a smaller impact than expected. However, the atomic coordinates, electron densities and atomic charges are supposed to be more reliable since the focused-ion-beam-prepared crystal exhibits the smallest extinction influences. This preparation technique is especially recommended for susceptible samples, for cases where a minimal invasive preparation procedure is needed, and for the preparation of crystals from specific areas, complex material architectures and materials that cannot be prepared with common methods (breaking or grinding).
Using Stellar Densities to Evaluate Transiting Exoplanetary Candidates
Creators: name: Tingley, Brandon
name: Bonomo, Aldo
name: Deeg, Hans-Jörg
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: One of the persistent complications in searches for transiting exoplanets is the low percentage of the detected candidates that ultimately prove to be planets, which significantly increases the load on the telescopes used for the follow-up observations to confirm or reject candidates. Several attempts have been made at creating techniques that can pare down candidate lists without the need of additional observations. Some of these techniques involve a detailed analysis of light curve characteristics; others estimate the stellar density or some proxy thereof. In this paper, we extend upon this second approach, exploring the use of independently-calculated stellar densities to identify the most promising transiting exoplanet candidates. We use a set of CoRoT candidates and the set of known transiting exoplanets to examine the potential of this approach. In particular, we note the possibilities inherent in the high-precision photometry from space missions, which can detect stellar asteroseismic pulsations from which accurate stellar densities can be extracted without additional observations.
description: 33 pages, 9 figures
title: Konfliktverhalten der DDR-Arbeiterschaft und Staatsrepression im Wandel
Creators: name: Hürtgen, Renate
name: Zentrum Für Zeithistorische Forschung
Publisher: name: ZZF - Centre for Contemporary History
Year: 2017

description: Arbeiter im Staatssozialismus. Ideologischer Anspruch und soziale Wirklichkeit
title: Zum industriellen Konflikt in der Tschechoslowakei 1945-1968
Creators: name: Heumos, Peter
name: Zentrum Für Zeithistorische Forschung
Publisher: name: ZZF - Centre for Contemporary History
Year: 2017

description: Arbeiter im Staatssozialismus. Ideologischer Anspruch und soziale Wirklichkeit
title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÐÐÐ¡ Ð²ÑÑÐ¾ÐºÐ¾Ð½Ð°Ð¿Ð¾ÑÐ½Ð¾Ð¹ Ð±ÐµÑÐ¾Ð½Ð½Ð¾Ð¹ Ð¿Ð»Ð¾ÑÐ¸Ð½Ñ Ð¿ÑÐ¸ ÑÐºÑÐ¿Ð»ÑÐ°ÑÐ°ÑÐ¸Ð¾Ð½Ð½ÑÑ Ð½Ð°Ð³ÑÑÐ·ÐºÐ°Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Research of the stress-strain state of a high-pressure concrete dam during operational loads
Creators: name: Ð¡Ð»Ð¾Ð²ÐµÑÐ½ÑÐ¹, ÐÐ»ÑÑ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: Ð±ÐµÑÐ¾Ð½Ð½ÑÐµ Ð³ÑÐ°Ð²Ð¸ÑÐ°ÑÐ¸Ð¾Ð½Ð½ÑÐµ Ð¿Ð»Ð¾ÑÐ¸Ð½Ñ
python
abaqus
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concrete gravity dams
finite elements
isoparametric element
stress-strain state
strength

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° ÐºÐ¾Ð½ÐµÑÐ½Ð¾-ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ½Ð¾Ð¼Ñ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð³Ð»ÑÑÐ¾Ð¹ ÑÐµÐºÑÐ¸Ð¸ Ð²ÑÑÐ¾ÐºÐ¾Ð½Ð°Ð¿Ð¾ÑÐ½Ð¾Ð¹ Ð±ÐµÑÐ¾Ð½Ð½Ð¾Ð¹ Ð¿Ð»Ð¾ÑÐ¸Ð½Ñ Ð½Ð° ÑÐºÐ°Ð»ÑÐ½Ð¾Ð¼ Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ð¸ Ð¿ÑÐ¸ Ð´ÐµÐ¹ÑÑÐ²Ð¸Ð¸ Ð´Ð°Ð²Ð»ÐµÐ½Ð¸Ñ Ð²Ð¾Ð´Ñ Ð²ÐµÑÑÐ½ÐµÐ³Ð¾ Ð±ÑÐµÑÐ° Ð¸ ÑÐ¾Ð±ÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð²ÐµÑÐ° ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ñ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ Ð¿Ð°ÐºÐµÑÐ° SIMULA ABAQUS Ð¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½Ð¾Ð³Ð¾ ÑÐ°ÑÑÑÑÐ½Ð¾Ð³Ð¾ Ð¼Ð¾Ð´ÑÐ»Ñ Ð½Ð° ÑÐ·ÑÐºÐµ Python Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ Ð±Ð¸Ð±Ð»Ð¸Ð¾ÑÐµÐº NumPy, SciPy, Pandas. ÐÐ¾Ð»ÑÑÐµÐ½Ð° ÐºÐ°ÑÑÐ¸Ð½Ð° Ð½Ð°Ð¿ÑÑÐ¶ÑÐ½Ð½Ð¾Ð³Ð¾ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ñ, Ð²Ð¾Ð·Ð½Ð¸ÐºÐ°ÑÑÐµÐ³Ð¾ Ð² Ð¿Ð»Ð¾ÑÐ¸Ð½Ðµ Ð¸ Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ð¸. Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð½ÑÐ¹ ÐºÐ¾Ð½ÐµÑÐ½Ð¾-ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ½ÑÐ¹ Ð¼Ð¾Ð´ÑÐ»Ñ ÑÑÐ°Ð²Ð½Ð¸Ð¼ Ð¿Ð¾ ÑÐºÐ¾ÑÐ¾ÑÑÐ¸ ÑÐ°Ð±Ð¾ÑÑ Ð¸ ÑÐ¾ÑÐ½Ð¾ÑÑÐ¸ ÑÐ°ÑÑÑÑÐ¾Ð² Ñ Ð¿Ð°ÐºÐµÑÐ¾Ð¼ ABAQUS.
description: This work is devoted to finite element modeling of a blind section of a high-pressure concrete dam on a rocky foundation under the action of the upstream water pressure and the own weight of the structure using the SIMULA ABAQUS package and the developed calculation module in Python using the NumPy, SciPy, Pandas libraries. A picture of the stress state arising in the dam and foundation is obtained. The developed finite element module is comparable in terms of speed and accuracy of calculations with the ABAQUS package.
Sources, fractionation and fate of polybrominated diphenyl ethers and polychlorinated biphenyls in the Strait of Georgia, Canada
Creators: name: Sun, Yuanji
Publisher: name: University of British Columbia
Year: 2020

description: The sources, dispersion, fractionation and fate of two persistent organic contaminants, polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs), were studied in the Strait of Georgia (SoG), by measuring dissolved (< 2.2 μm) and particulate (> 2.2 μm) PCBs and PBDEs concentrations in seawater at various Salish Sea stations from 2013 to 2018. Our results show that the primary sources of particulate PBDEs (pPBDEs) into the southern SoG are effluent particles from Vancouver’s main wastewater treatment plant at Iona Island and sediment resuspension in Burrard Inlet. In contrast, dissolved PBDEs (dPBDEs) in the southern SoG are generated from the desorption of PBDEs from these particles during their transport with the SoG water circulation, leading to high dPBDEs and low pPBDEs concentrations. These findings were supported by changes in particulate PBDEs contribution to the total PBDE concentrations at various stations, as well as the systematic fractionation of PBDE congeners during desorption from sewage particles and re-adsorption onto marine particles. In addition, the SoG estuarine circulation (including tides) leads to substantial temporal variability of dPBDEs concentrations in southern SoG and near Bowen Island. Most PBDEs in the SoG are eventually removed to the sediment through particle scavenging, leaving the less brominated congeners in the dissolved phase to be exported to the Pacific Ocean. The box model simulation demonstrated that the Fraser River is an important PBDE source due to its high flow rate, despite its low dPBDEs concentrations. Low modelled dPBDEs concentrations, compared with what we measured, point to unquantified sources or an increase in the PBDEs Iona discharge. PCBs have been banned for decades, and showed very different behaviour to PBDEs in SoG. Our limited data suggest that industrialized areas in Burrard Inlet are the main sources to SoG, and not the Iona outfall. Furthermore, the PCB homologs’ distribution supports preferential removal of the more hydrophobic dissolved PCBs congeners added to SoG from Burrard Inlet by particle scavenging. Once PCB-contaminated seawater and particles have been in contact long enough in SoG there is a clear increasing trend in particulate to dissolved partitioning with the degree of hydrophobicity of the PCB homologs.
Competing Effects of Droplet Sedimentation and Wind Shear on Entrainment in Stratocumulus
Creators: name: Schulz, Bernhard
name: Mellado, Juan Pedro
Publisher: name: FID GEO
Year: 2019

description: The joint effect of droplet sedimentation and wind shear on cloud top entrainment in stratocumulus is investigated with direct numerical simulations. Although it is well understood that droplet sedimentation weakens entrainment while wind shear enhances entrainment, there is no consensus on the magnitude of each process. We find that the entrainment reduction by droplet sedimentation is sufficiently strong to completely compensate the entrainment enhancement by wind shear, and thus, droplet sedimentation and wind shear effects can be equally important for cloud top entrainment. For instance, for the subtropical conditions considered here, droplet sedimentation weakens entrainment by up to 40% while wind shear enhances entrainment by up to 40%. This result implies that the droplet size distribution can substantially affect cloud lifetimes not only because of its effect on rain formation but also because of its effect on cloud top entrainment, which emphasizes the need for a better characterization of droplet size distributions in stratocumulus. A second implication is that entrainment velocity parametrizations should pay equal attention to droplet sedimentation and to wind shear effects.
title: ÐÑÐµÐ½ÐºÐ° ÑÐµÐ»ÐµÑÐ¾Ð¾Ð±ÑÐ°Ð·Ð½Ð¾ÑÑÐ¸ Ð²Ð½ÐµÐ´ÑÐµÐ½Ð¸Ñ Just Walk Out Technology Ð² Ð Ð¾ÑÑÐ¸Ð¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Assessment of performance of implementation of Just Walk Out Technology in Russia
Creators: name: Ð¡Ð¾ÑÑÐ¾Ð½Ð¾Ð²Ð°, ÐÐ»Ð¸Ð½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: just walk out technology
amazon
amazon go
rfid
ÑÐ¸ÑÑÐ¾Ð²Ð°Ñ Ð»Ð¾Ð³Ð¸ÑÑÐ¸ÐºÐ°
ÑÐ¸ÑÑÐ¾Ð²Ð¸Ð·Ð°ÑÐ¸Ñ
Ð¾ÑÐµÐ½ÐºÐ° ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸
digital logistics
digitalization
performance assessment

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð° ÐºÐ¾Ð½ÑÐµÐ¿ÑÐ¸Ñ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ "Just Walk Out", Ð¾Ð¿Ð¸ÑÐ°Ð½Ð° Ð¿ÑÐ°ÐºÑÐ¸ÐºÐ° Ð²Ð½ÐµÐ´ÑÐµÐ½Ð¸Ñ Ð² Ð Ð¾ÑÑÐ¸Ð¸ Ð¸ Ð·Ð° ÑÑÐ±ÐµÐ¶Ð¾Ð¼. ÐÐ° Ð¿ÑÐ¸Ð¼ÐµÑÐµ ÐÐÐ "ÐÐ¾ÑÐ¾Ð´ÑÐºÐ¾Ð¹ ÑÑÐ¿ÐµÑÐ¼Ð°ÑÐºÐµÑ" Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐµÑÐ½Ð¸ÐºÐ¾-ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¸Ñ Ð¿Ð¾ÐºÐ°Ð·Ð°ÑÐµÐ»ÐµÐ¹ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð° Ð¾ÑÐµÐ½ÐºÐ° ÐºÐ¾Ð¼Ð¼ÐµÑÑÐµÑÐºÐ¾Ð¹ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð²Ð½ÐµÐ´ÑÐµÐ½Ð¸Ñ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ "Just Walk Out" Ð² ÐÐÐ "ÐÐ¾ÑÐ¾Ð´ÑÐºÐ¾Ð¹ ÑÑÐ¿ÐµÑÐ¼Ð°ÑÐºÐµÑ".
description: This paper describes the concept of the Just Walk Out Technology, describes the practice of implementation in Russia and abroad. On the example of LLC "Gorodskoy Supermarket" the analysis of technical and economic performance indicators is carried out. The assessment of the commercial efficiency of the implementation of the Just Walk Out Technology in the "Gorodskoy Supermarket" LLC was carried out.
title: Harnblasenkarzinom. Blasenkrebs – Was für Sie wichtig ist
Creators: name: Ärztliches Zentrum Für Qualität In Der Medizin (ÄZQ)
Publisher: name: Bundesärztekammer (BÄK); Kassenärztliche Bundesvereinigung (KBV); Ärztliches Zentrum für Qualität in der Medizin (ÄZQ)
Year: 2017
Subjects: subject: 610 Medical sciences; Medicine

description: Kurzinformation für Patienten
Structure variations within RSi2 and R2Si3 silicides. Part II. Structure driving factors
Creators: name: Nentwich, M.
name: Zschornak, M.
name: Sonntag, M.
name: Gumeniuk, R.
name: Gemming, S.
name: Leisegang, T.
name: Meyer, D. C.
Publisher: name: FID GEO
Year: 2020

description: To gain an overview of the various structure reports on RSi2 and R2TSi3 compounds (R is a member of the Sc group, an alkaline earth, lanthanide or actinide metal, T is a transition metal), compositions, lattice parameters a and c, ratios c/a, formula units per unit cell, and structure types are summarized in extensive tables and the variations of these properties when varying the R or T elements are analyzed. Following the structural systematization given in Part I, Part II focuses on revealing the driving factors for certain structure types, in particular, the electronic structure. Here, concepts of different complexity are presented, including molecular orbital theory, the principle of hard and soft acids and bases, and a Bader analysis based on Density Functional Theory calculations for representatives of the reported structure types. The potential Si/T ordering in different structures is discussed. Additionally, the influences from intrinsic and extrinsic properties (e.g. elemental size and electronics as well as lattice parameters and structure type) are investigated on each other using correlation plots. Thermal treatment is identified as an important factor for the ordering of Si/T atoms.
Characterization of differential throughfall drop size distributions beneath European beech and Norway spruce
Creators: name: Lüpke, Marvin
name: Leuchner, Michael
name: Levia, Delphis
name: Nanko, Kazuki
name: Iida, Shin'ichi
name: Menzel, Annette
Publisher: name: FID GEO
Year: 2019

description: Forest canopies present irregular surfaces that alter both the quantity and spatiotemporal variability of precipitation inputs. The drop size distribution (DSD) of rainfall varies with rainfall event characteristics and is altered substantially by the forest stand properties. Yet, the influence of two major European tree species, European beech (Fagus sylvatica L.) and Norway spruce (Picea abies (L.) H. karst), on throughfall DSD is largely unknown. In order to assess the impact of these two species with differing canopy structures on throughfall DSD, two optical disdrometers, one above and one below the canopy of each European beech and Norway spruce, measured DSD of both incident rainfall and throughfall over 2 months at a 10-s resolution. Fractions of different throughfall categories were analysed for single-precipitation events of different intensities. While penetrating the canopies, clear shifts in drop size and temporal distributions of incoming rainfall were observed. Beech and spruce, however, had different DSD, behaved differently in their effect on diameter volume percentiles as well as width of drop spectrum. The maximum drop sizes under beech were higher than under spruce. The mean ± standard deviation of the median volume drops size (D50) over all rain events was 2.7 ± 0.28 mm for beech and 0.80 ± 0.04 mm for spruce, respectively. In general, there was a high-DSD variability within events indicating varying amounts of the different throughfall fractions. These findings help to better understand the effects of different tree species on rainfall partitioning processes and small-scale variations in subcanopy rainfall inputs, thereby demonstrating the need for further research in high-resolution spatial and temporal properties of rainfall and throughfall.
Some critical remarks on Landau's (macroscopic) phase transitions theory
Creators: name: Iurato, Giuseppe
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: This paper explain the existence of a particular formal model (drew from Theoretical Astrophysics) whose thermodynamical phenomenology shows a possible second order phase transition (according to Landau's Thermodynamical Theory) that seems does not verify the (Birman-Goldrich-Jaric) "chain subduction criterion" and the (Ascher's) "maximality criterion" of Landau's Phenomenological Theory. Therefore, it follows that Landau's Phenomenological Theory is more restrictive than the Landau's Thermodynamical Theory.
description: This work is a part of a communication given at the XCI-th National Congress of the Italian Physical Society (SIF), III-th section: Astrophysics and Cosmic Physics, held to Department of Physics and Astronomy of the University of Catania, September 26 - October 1, 2005
title: Ð­Ð»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ°Ñ ÑÐ°ÑÑÑ ÐÐ­Ð¡ Ñ ÑÐµÐ°ÐºÑÐ¾ÑÐ°Ð¼Ð¸ ÐÐÐ­Ð -1000 Ð¼Ð¾ÑÐ½Ð¾ÑÑÑÑ 3000 ÐÐÑ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Electrical part of a nuclear power plant with VVER-1000 reactors with a capacity of 3000 MW
Creators: name: ÐÑÑÐµÐ¼Ð¾Ð², ÐÐ»ÐµÐºÑÐµÐ¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ»ÐµÐºÑÑÐ¾ÑÑÐ°Ð½ÑÐ¸Ð¸
ÑÐ¾Ðº ÐºÐ¾ÑÐ¾ÑÐºÐ¾Ð³Ð¾ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ñ
ÑÐµÐ»ÐµÐ¹Ð½Ð°Ñ Ð·Ð°ÑÐ¸ÑÐ°
Ð²ÑÐ±Ð¾Ñ ÑÐ»ÐµÐºÑÑÐ¾Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ
power plant design
short-circuit current
relay protection
selection of electrical equipment

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¸Ð·Ð»Ð¾Ð¶ÐµÐ½Ð° ÑÑÑÐ½Ð¾ÑÑÑ Ð¿Ð¾Ð´ÑÐ¾Ð´Ð° Ð¿Ð¾ ÑÐ°ÑÑÐµÑÑ Ð¸ Ð²ÑÐ±Ð¾ÑÑ Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð³Ð¾ Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¿ÑÐ¸ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ð¸ ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¾Ð¹ ÑÐ°ÑÑÐ¸ ÑÐ»ÐµÐºÑÑÐ¾ÑÑÐ°Ð½ÑÐ¸Ð¹ Ð¸ Ð¿Ð¾Ð´ÑÑÐ°Ð½ÑÐ¸Ð¹. ÐÐ°Ð½Ñ Ð¾Ð±ÑÐ¸Ðµ Ð¿Ð¾Ð½ÑÑÐ¸Ñ Ð¾ Ð¼ÐµÑÐ¾Ð´Ð¸ÐºÐµ ÑÐ°ÑÑÐµÑÐ° ÑÐ¾ÐºÐ¾Ð² ÐºÐ¾ÑÐ¾ÑÐºÐ¾Ð³Ð¾ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ñ, Ð²ÑÐ±Ð¾ÑÐ° Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð³Ð¾ Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¸ Ð¿Ð¾Ð½ÑÑÐ¸Ð¹ Ð¿Ð¾ ÑÐµÐ»ÐµÐ¹Ð½Ð¾Ð¹ Ð·Ð°ÑÐ¸ÑÐµ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð² ÑÑÐµÐ¼Ñ. Ð¢Ð°ÐºÐ¶Ðµ Ð¿Ð¾ÐºÐ°Ð·Ð°Ð½Ñ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐ¸ Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð³Ð¾ ÑÐ°ÑÑÐµÑÐ° ÑÐ¾ÐºÐ¾Ð² ÐºÐ¾ÑÐ¾ÑÐºÐ¾Ð³Ð¾ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ñ Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸ÐµÐ¼ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ñ RastrWin.
description: This paper describes the essence of the approach to the calculation and selection of the main equipment in the design of the electrical part of power plants and substations. General concepts about the method of calculating short-circuit currents, selecting the main equipment and concepts for relay protection of circuit elements are given. The possibilities of automated calculation of short-circuit currents using the RastrWin program are also shown.
Structure variations within RSi2 and R2TSi3 silicides. Part I. Structure overview
Creators: name: Nentwich, M.
name: Zschornak, M.
name: Sonntag, M.
name: Gumeniuk, R.
name: Gemming, S.
name: Leisegang, T.
name: Meyer, D. C.
Publisher: name: FID GEO
Year: 2020

description: Here, structural parameters of various structure reports on RSi2 and R2TSi3 compounds [where R is an alkaline earth metal, a rare earth metal (i.e. an element of the Sc group or a lathanide), or an actinide and T is a transition metal] are summarized. The parameters comprising composition, lattice parameters a and c, ratio c/a, formula unit per unit cell and structure type are tabulated. The relationships between the underlying structure types are presented within a group–subgroup scheme (Bärnighausen diagram). Additionally, unexpectedly missing compounds within the R2TSi3 compounds were examined with density functional theory and compounds that are promising candidates for synthesis are listed. Furthermore, a correlation was detected between the orthorhombic AlB2-like lattices of, for example, Ca2AgSi3 and the divalence of R and the monovalence of T. Finally, a potential tetragonal structure with ordered Si/T sites is proposed.
title: "Macht die Betriebe zu Zentren der Kulturarbeit". Gewerkschaftlich organisierte Kulturarbeit in den Industriebetrieben der DDR in den fünfziger Jahren: Sozialhistorisches Novum oder Modifizierung betriebspolitischer Traditionen?
Creators: name: Schuhmann, Annette
name: Zentrum Für Zeithistorische Forschung
Publisher: name: ZZF - Centre for Contemporary History
Year: 2017

description: Arbeiter im Staatssozialismus. Ideologischer Anspruch und soziale Wirklichkeit
Magnetic field induced localization in carbon nanotubes
Creators: name: Marganska, Magdalena
name: del Valle, Miriam
name: Jhang, Sung Ho
name: Strunk, Christoph
name: Grifoni, Milena
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The electronic spectra of long carbon nanotubes (CNTs) can, to a very good approximation, be obtained using the dispersion relation of graphene with both angular and axial periodic boundary conditions. In short CNTs one must account for the presence of open ends, which may give rise to states localized at the edges. We show that when a magnetic field is applied parallel to the tube axis, it modifies both momentum quantization conditions, causing hitherto extended states to localize near the ends. This localization is gradual and initially the involved states are still conducting. Beyond a threshold value of the magnetic field, which depends on the nanotube chirality and length, the localization is complete and the transport is suppressed.
description: 5 pages, 3 figures
Design of a technique to measure the density of ultracold atoms in a short-period optical lattice in three dimensions with single atom sensitivity
Creators: name: Shotter, Martin
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A measurement technique is described which has the potential to map the atomic site occupancies of ultracold atoms in a short-period three-dimensional optical lattice. The method uses accordion and pinning lattices, together with polarization gradient cooling and fluorescence detection, to measure the positions of individual atoms within the sample in three dimensions at a resolution of around half the atomic resonant wavelength. The method measures the site occupancy, rather than the parity of the site occupancy, of atoms in the lattice. It is expected that such measurements hold significant potential for the study of ultracold quantum dynamics.