cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
ANEMIA IN INFANTS AND ITS TREATMENT
Creators: name: Tolipova, Noila
name: Latipova, Shakhnoza
Publisher: name: Zenodo
Year: 2024

description: Anemia is a common hematological condition characterized by a decrease in the number of red blood cells (RBCs) or a deficiency in hemoglobin concentration. In infants, this condition can impair oxygen transport to tissues, leading to developmental delays and other health concerns. Anemia is particularly concerning during infancy because of the rapid growth and developmental needs during this stage. Although the causes of anemia in infants can vary, iron deficiency remains the leading cause. This article explores the various types of anemia in infants, their causes, and the current strategies used in their treatment.
A New Generation of Sustainable Structural Concretes-Design Approach and Material Properties
Creators: name: Müller, H.S.
name: Moffatt, J.S.
name: Haist, M.
name: Vogel, M.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2019
Subjects: subject: Cements
subject: Concrete buildings
subject: Concrete construction
subject: Durability
subject: Fly ash
subject: Intelligent buildings
subject: Slags
subject: Structural properties
subject: Sustainable development
subject: Innovative approaches
subject: Mechanical and durability properties
subject: Physical and chemical properties
subject: Probabilistic methods
subject: Service life prediction
subject: Supplementary cementitious material
subject: Sustainability-potential
subject: Sustainable concretes
subject: Concretes
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Sustainable concretes, also termed eco-concretes or green concretes, produced with a significantly reduced cement content provide a promising alternative for improving concrete sustainability without using supplementary cementitious materials, such as fly ash or slag. However, the production of such eco-concretes is a challenge in view of concrete technology and concrete properties. In particular, new design concepts as well as new admixtures have to be developed and applied to produce concretes with a cement clinker content of approx. 100 kg/m3 while keeping the concrete performance on a level similar to ordinary structural concrete of today. To evaluate the sustainability of these new types of concretes not only the very low ecological impact due to the composition may be regarded, but in addition also their technical performance, i.e. their mechanical, physical and chemical properties have to be taken into consideration. This contribution firstly gives an overview on sustainable approaches for concrete structures, further introduces the Building Material Sustainability Potential as an index, which is applied in combination with the service life prediction for cement-reduced concretes using full probabilistic methods. The composition of these particular structural concretes is discussed and related test results for their performance are presented. The contribution closes with an introduction to graded concrete structures as an innovative approach for the improvement of concrete sustainability on a structural level and presents testing results for mechanical and durability properties of graded bending beams. The paper at hand extends the information given in [1] by looking more closely at the performance of graded concrete structures and here in particular by considering concretes produced from intermixing two concrete types (i.e. eco-concrete and UHPC) in the fresh state.
UVCS/SoHO Catalog of Coronal Mass Ejections from 1996 to 2005: Spectroscopic Proprieties
Creators: name: Giordano, Silvio
name: Ciaravella, Angela
name: Raymond, John
name: Ko, Yuan-Kuen
name: Suleiman, Raid
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Ultraviolet spectra of the extended solar corona have been routinely obtained by SoHO/UVCS since 1996. Sudden variations of spectral parameters are mainly due to the detection of Coronal Mass Ejections (CMEs) crossing the instrumental slit. We present a catalog of CME ultraviolet spectra based upon a systematic search of events in the LASCO CME catalog, and we discuss their statistical properties. Our catalog includes 1059 events through the end of 2005, covering nearly a full solar cycle. It is online available at the URL http://solarweb.oato.inaf.it/UVCS_CME and embedded in the online LASCO CME catalog (http://cdaw.gsfc.nasa.gov/CME_list). The emission lines observed provide diagnostics of CME plasma parameters, such as the light-of-sight velocity, density and temperature and allow to link the CME onset data to the extended corona white-light images. The catalog indicates whether there are clear signatures of features such as shock waves, current sheets, O VI flares, helical motions and which part of the CME structures (front, cavity or prominence material) are detected. The most common detected structure is the cool prominence material (in about 70% of the events). For each event, the catalog also contains movie, images, plots and information relevant to address detailed scientific investigations. The number of events detected in UV is about 1/10 of the LASCO CMEs, and about 1/4 of the halo events. We find that UVCS tends to detect faster, more massive and energetic CME than LASCO and for about 40% of the events events it has been possible to determine the plasma light-of-sight velocity.
description: 19 pages, 16 figure, 3 tables, Accepted by JGR
Science rules! A qualitative study of scientists' approaches to grant lottery
Creators: name: Philipps, Axel
Publisher: name: Oxford : Oxford Univ. Press
Year: 2020
Subjects: subject: grant lottery
subject: peer review
subject: qualitative research
subject: research funding
subject: scientific ethos
subject: scientific field
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::050 | Zeitschriften, fortlaufende Sammelwerke

description: Using peer review to assess the validity of research proposals has always had its fair share of critics, including a more-than-fair-share of scholars. The debate about this method of assessing these proposals now seems trivial when compared with assessing the validity for granting funding by lottery. Some of the same scholars have suggested that the way grant lottery was being assessed has made random allocation seem even-handed, less biased and more supportive of innovative research. But we know little of what researchers actually think about grant lottery and even less about the thoughts of those scientists who rely on funding. This paper examines scientists’ perspectives on selecting grants by ‘lots’ and how they justify their support or opposition. How do they approach something scientifically that is, in itself, not scientific? These approaches were investigated with problem-centered interviews conducted with natural scientists in Germany. The qualitative interviews for this paper reveal that scientists in dominated and dominating field positions are, more or less, open to the idea of giving a selection process by lots a try. Nonetheless, they are against pure randomization because from their point of view it is incompatible with scientific principles. They rather favor a combination of grant lottery and peer review processes, assuming that only under these conditions could randomly allocated funding be an integral and legitimate part of science.
title: Vom Merzbachtal in die Graetheide? - Die Synchronisation der niederländischen Bandkeramik mit der Aldenhovener Platte am Beispiel der Siedlung und des Gräberfeldes von Elsloo
Creators: name: Balkowski, Nadia
name: Hartmann, Stefan
Publisher: name: University Library Heidelberg
Year: 2015

description: Inhalt dieses Artikels ist ein Vergleich der demografischen Entwicklung zweier bandkeramischer Schlüsselregionen Mitteleuropas, der niederländischen Graetheide und der niederrheinischen Aldenhovener Platte. Anhand der demografischen Daten aus Siedlungen und Gräberfeldern wird die Plausibilität einer möglichen Migration am Ende der Bandkeramik von der Aldenhovener Platte in die Graetheide erörtert.
description: The goal of this article is to compare the demographic development of two Bandkeramik key areas in Central Europe, the Dutch Graetheide Region and the Aldenhovener Platte of the Lower Rhine Basin. Based on the demographic data of settlements and graveyards the hypothesis of population movements from the Aldenhovener Platte towards the Graetheide at the end of the Bandkeramik will be discussed.
Do optical quarks exist in free space: scalar treatment?
Creators: name: Volyar, Alexander V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We have considered new type of singular beams with fractional topological charges that were called the optical quarks possessed rather unique properties, their topological charges being half of the integer order. There are four types of optical quarks: even and odd with opposite signs of the topological charges. The sums or difference of the even and odd quarks form the standard vortex (or non-vortex) beams with the integer order topological charges. All quarks in the same beam annihilate, the beam vanishes. The analysis of the quark angular spectra showed that the optical quarks are structurally unstable field forms under the free-space propagation. We have analyzed their propagation properties for different types of the beam envelope including the symmetric beam array with discrete optical quarks. We have discussed the properties of the possible structurally stable quark forms and medium capable to maintain optical quarks
description: 12 pages, 11 figures
title: Denkmalschutz im Grenzgebiet: Eine Analyse der Wissensproduktion und der Praktiken des Denkmalschutzes in der deutsch-dänischen Grenzregion im 19. Jahrhundert
Creators: name: Steigerwald, Jelena
Publisher: name: University Library Heidelberg
Year: 2015

description: Der Denkmalschutz als Institution und Wissenschaft entwickelte sich im 19. Jahrhundert. Gegenstand der Dissertation ist, diese Entstehung transnational in der deutsch-dänischen Grenzregion zu untersuchen. Jelena Steigerwald vergleicht dazu zunächst die Entwicklung der Denkmalschutzstrukturen in Dänemark und Preußen sowie den Herzogtümern Schleswig und Holstein. Sie geht dann der zentralen Frage nach, wie Wissen und Werte im Denkmalschutz generiert und vermittelt worden sind. Dazu wird die Wissensproduktion des Denkmalschutzes anhand der Technologien der Sammlung, Ausgrabung und Zeichnung analysiert. Zuletzt wird von der auf Archivalien basierte Studie die Umsetzung der Denkmalschutzideen und deren Finanzierung unter wechselnden Machtverhältnissen in den Blick genommen.
description: Monument preservation as an institution and science was developed in the 19th century. The dissertation aims to examine this development within the German-Danish border region. Therefore, this investigation compares the establishment of structures of monument preservation in Denmark, Prussia and the duchies of Schleswig and Holstein. Subsequently, the analysis is concerned with the main question on how the creation and transfer of knowledge and values of monument preservation were generated. In order to answer this question, the production of knowledge associated with heritage preservation is analysed through the technologies of collection, excavation and drawing. Furthermore, the study, which is based on archival material, focuses on the implementation of ideas associated with heritage and their funding under varying power relations.
Problems Militating Against Administration of Curriculum Implementation of Entrepreneurship Education in Secondary Schools in Nigeria .pdf
Creators: name: Edeh, Stephen  Olenye
Publisher: name: figshare
Year: 2023
Subjects: Other education not elsewhere classified

description: The study examined the major problems militating against administration of curriculum implementation of entrepreneurship education in secondary schools in Nigeria. The paper discussed the concept of curriculum, curricular development prospects for curriculum development, relevance of curriculum development, the concept of entrepreneurship education and its challenges...
The average GeV-band Emission from Gamma-Ray Bursts
Creators: name: Lange, Johannes
name: Pohl, Martin
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We analyze the emission in the 0.3-30 GeV energy range of Gamma-Ray Bursts detected with the Fermi Gamma-ray Space Telescope. We concentrate on bursts that were previously only detected with the Gamma-Ray Burst Monitor in the keV energy range. These bursts will then be compared to the bursts that were individually detected with the Large Area Telescope at higher energies. To estimate the emission of faint GRBs we use non-standard analysis methods and sum over many GRBs to find an average signal which is significantly above background level. We use a subsample of 99 GRBs listed in the Burst Catalog from the first two years of observation. Although mostly not individually detectable, the bursts not detected by the Large Area Telescope on average emit a significant flux in the energy range from 0.3 GeV to 30 GeV, but their cumulative energy fluence is only 8% of that of all GRBs. Likewise, the GeV-to-MeV flux ratio is less and the GeV-band spectra are softer. We confirm that the GeV-band emission lasts much longer than the emission found in the keV energy range. The average allsky energy flux from GRBs in the GeV band is 6.4*10^-4 erg cm^-2 yr^-1 or only 4% of the energy flux of cosmic rays above the ankle at 10^18.6 eV.
description: Astronomy and Astrophysics, version accepted for publication
The Mass Function of Primordial Rogue Planet MACHOs in quasar nanolensing
Creators: name: Schild, Rudolph E.
name: Nieuwenhuizen, Theo M.
name: Gibson, Carl H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The recent Sumi et al (2010, 2011) detection of free roaming planet mass MACHOs in cosmologically significant numbers recalls their original detection in quasar microlening studies (Schild 1996, Colley and Schild 2003). We consider the microlensing signature of such a population, and find that the nano-lensing (microlensing) would be well characterized by a statistical microlensing theory published previously by Refsdal and Stabel (1991). Comparison of the observed First Lens microlensing amplitudes with the theoretical prediction gives close agreement and a methodology for determining the slope of the mass function describing the population. Our provisional estimate of the power law exponent in an exponential approximation to this distribution is $2.98^{+1.0}_{-0.5}.$ where a Salpeter slope is 2.35.
description: 12 pages, 1 figure
Micronutrient status of recreational runners with vegetarian or non-vegetarian dietary patterns
Creators: name: Nebl, Josefine
name: Schuchardt, Jan Philipp
name: Ströhle, Alexander
name: Wasserfurth, Paulina
name: Haufe, Sven
name: Eigendorf, Julian
name: Tegtbur, Uwe
name: Hahn, Andreas
Publisher: name: Basel : MDPI AG
Year: 2019
Subjects: subject: Nutrient status
subject: Nutrient supply
subject: Recreational athletes
subject: Veganism
subject: Vegetarianism
subject: calcium
subject: cyanocobalamin
subject: ferritin
subject: hemoglobin
subject: homocysteine
subject: magnesium
subject: methylmalonic acid
subject: trace element
subject: transferrin
subject: vitamin D
subject: zinc
subject: adult
subject: Article
subject: atomic absorption spectrometry
subject: B12 deficiency
subject: chemiluminescence immunoassay
subject: controlled study
subject: cross-sectional study
subject: dietary pattern
subject: electrochemiluminescence
subject: female
subject: hematocrit
subject: high performance liquid chromatography
subject: human
subject: human experiment
subject: immunoturbidimetry
subject: iron binding capacity
subject: iron deficiency
subject: iron deficiency anemia
subject: iron metabolism
subject: lactoovovegetarian
subject: liquid chromatography-mass spectrometry
subject: male
subject: mean corpuscular volume
subject: normal human
subject: nutritional status
subject: omnivore
subject: questionnaire
subject: recreation
subject: runner
subject: vegan diet
subject: vegetarian diet
subject: vitamin D deficiency
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: Vegetarian diets have gained popularity in sports. However, few data exist on the status of micronutrients and related biomarkers for vegetarian and vegan athletes. The aim of this cross-sectional study was to compare the micronutrient status of omnivorous (OMN, n = 27), lacto-ovo-vegetarian (LOV, n = 26), and vegan (VEG, n = 28) recreational runners. Biomarkers of vitamin B12, folate, vitamin D, and iron were assessed. Additionally, serum levels of calcium, magnesium, and zinc were examined. Lifestyle factors and supplement intake were recorded via questionnaires. About 80% of each group showed vitamin B12 adequacy with higher levels in supplement users. Mean red blood cell folate exceeded the reference range (>340 nmol/L) in all three groups (OMN: 2213 ± 444, LOV: 2236 ± 596, and VEG: 2354 ± 639 nmol/L; not significant, n.s.). Furthermore, vitamin D levels were comparable (OMN: 90.6 ± 32.1, LOV: 76.8 ± 33.7, and VEG: 86.2 ± 39.5 nmol/L; n.s.), and we found low prevalence (<20%) of vitamin D inadequacy in all three groups. Less than 30% of each group had depleted iron stores, however, iron deficiency anemia was not found in any subject. Our findings suggest that a well-planned, health-conscious lacto-ovo-vegetarian and vegan diet, including supplements, can meet the athlete’s requirements of vitamin B12, vitamin D and iron. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.
Noticing and weighing alternatives in the reflection of regular classroom teaching: Evidence of expertise using mobile eye-tracking
Creators: name: Keller, Lena
name: Cortina, Kai S.
name: Müller, Katharina
name: Miller, Kevin F.
Publisher: name: Dordrecht [u.a.] : Springer Science + Business Media B.V.
Year: 2022
Subjects: subject: Expertise
subject: Mobile eye-tracking
subject: Professional vision
subject: Teacher training
subject: Think-aloud
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::370 | Erziehung, Schul- und Bildungswesen

description: Instructional videos are widely used to study teachers’ professional vision. A new technological development in video research is mobile eye-tracking (MET). It has the potential to provide fine-grained insights into teachers’ professional vision in action, but has yet been scarcely employed. We addressed this research gap by using MET video feedback to examine how expert and novice teachers differed in their noticing and weighing of alternative teaching strategies. Expert and novice teachers’ lessons were recorded with MET devices. Then, they commented on what they observe while watching their own teaching videos. Using a mixed methods approach, we found that expert and novice teachers did not differ in the number of classroom events they noticed and alternative teaching strategies they mentioned. However, novice teachers were more critical of their own teaching than expert teachers, particularly when they considered alternative teaching strategies. Practical implications for the field of teacher education are discussed. © 2021, The Author(s).
Silene conica L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: S. conica L. Adventiv. 2:Sitten,beiderRhonebrücke(Wolf,nachJaccardMskr.; Jahr?).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
On the rate of convergence for central limit theorems of sojourn times of Gaussian fields
Creators: name: Pham, Viet Hung
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: The aim of this paper is to control the rate of convergence for central limit theorems of sojourn times of Gaussian fields in both cases: the fixed and the moving level. Our main tools are the Malliavin calculus and the Stein's method, developed by Nualart, Peccati and Nourdin. We also extend some results of Berman to the multidimensional case.
Mueller matrix-based approach for the ex vivo detection of riboflavin-treated transparent biotissue
Creators: name: Jütte, Lennart
name: Sharma, Gaurav
name: Fricke, Dierk
name: Franke, Maximilian
name: Wollweber, Merve
name: Roth, Bernhard
Publisher: name: Basel : MDPI AG
Year: 2021
Subjects: subject: Biotissue
subject: Ex vivo polarimetry
subject: Mueller matrix
subject: Polarization sensitive detection
subject: Dewey Decimal Classification::600 | Technik

description: Corneal collagen cross-linking is an established procedure for the treatment of certain eye diseases which is applied to enhance the mechanical stability of such biotissue without deteriorating its functionality. However, being transparent, the optical analysis of the outcome of such treatments is cumbersome and relies on relatively expensive experimental equipment. We aim to apply the Mueller matrix polarimetry for the detection of photo-induced collagen cross-linking in transparent biotissue after treatment with riboflavin and UV irradiation. A simple Mueller matrix polarimetry setup could provide a fast and non-invasive analysis of transparent media to sensitively detect small photo-induced cross-linking effects in biotissue. We demonstrated the current capabilities of the approach on non-planar porcine cornea samples ex vivo. We reported the distinction between untreated and riboflavin-treated samples. The differences observed were correlated with the variation of certain Mueller matrix elements and parameters derived from the decomposition. The measurement data show variation in the cross-linked and non-cross-linked samples, although the effect of the UV treatment on the riboflavin-treated samples was not at the same level of significance yet and needs further investigation. The Mueller matrix measurement represents a promising approach for the detection of the effects of corneal collagen cross-linking. Further studies with a larger sample number are required to validate this approach. In the future, this could enable the reliable and non-invasive detection of photo-induced effects in biotissue and open the possibility for in vivo application, e.g., in eye disease treatment or the detection of scar collagen development. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Desmoxya lunata
Creators: name: Morrow, Christine
name: Cárdenas, Paco
name: Boury-Esnault, Nicole
name: Picton, Bernard
name: Mccormack, Grace
name: Soest, Rob Van
name: Collins, Allen
name: Redmond, Niamh
name: Maggs, Christine
name: Sigwart, Julia
name: Allcock, Louise A.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Porifera
Demospongiae
Poecilosclerida
Desmoxyidae
Desmoxya
Desmoxya lunata

description: DESMOXYA LUNATA (CARTER, 1885)
(FIG. 19A–G)
description: Published as part of Morrow, Christine, Cárdenas, Paco, Boury-Esnault, Nicole, Picton, Bernard, Mccormack, Grace, Soest, Rob Van, Collins, Allen, Redmond, Niamh, Maggs, Christine, Sigwart, Julia & Allcock, Louise A., 2019, Integrating morphological and molecular taxonomy with the revised concept of Stelligeridae (Porifera: Demospongiae), pp. 31-81 in Zoological Journal of the Linnean Society 187 on page 70
Die Schrödinger-Newton-Gleichung als Modell selbstgravitierender Quantensysteme
Creators: name: Großardt, André
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2013
Subjects: subject: Schrödinger-Newton equation
subject: quantum mechanics
subject: Schrödinger-Newton-Gleichung
subject: Quantenmechanik
subject: Gravitation
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Distribution of small dispersive coal dust particles and absorbed radioactive chemical elements in conditions of forced acoustic resonance in iodine air filter at nuclear power plant
Creators: name: Ledenyov, Oleg P.
name: Neklyudov, Ivan M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The physical features of distribution of the small dispersive coal dust particles and the adsorbed radioactive chemical elements and their isotopes in the absorber with the granular filtering medium with the cylindrical coal granules were researched in the case of the intensive air dust aerosol stream flow through the iodine air filter (IAF). It was shown that, at the certain aerodynamic conditions in the IAF, the generation of the acoustic oscillations is possible. It was found that the acoustic oscillations generation results in an appearance of the standing acoustic waves of the air pressure (density) in the IAF. In the case of the intensive blow of the air dust aerosol, it was demonstrated that the standing acoustic waves have some strong influences on both: 1) the dynamics of small dispersive coal dust particles movement and their accumulation in the IAF; 2) the oversaturation of the cylindrical coal granules by the adsorbed radioactive chemical elements and their isotopes in the regions, where the antinodes of the acoustic waves are positioned. Finally, we completed the comparative analysis of the theoretical calculations with the experimental results, obtained for the cases of: 1) the experimental aerodynamic modeling of physical processes of the absorbed radioactive chemical elements and their isotopes distribution in the IAF; and 2) the gamma-activation spectroscopy analysis of the absorbed radioactive chemical elements and their isotopes distribution in the IAF. We made the innovative propositions on the necessary technical modifications with the purpose to improve the IAF technical characteristics and increase its operational time at the nuclear power plant (NPP), going from the completed precise characterization of the IAF parameters at the long term operation.
description: 8 pages, 2 figures, http://vant.kipt.kharkov.ua/ARTICLE/VANT_2013_2/article_2013_2_94.pdf
On beta-skeleton automata with memory
Creators: name: Alonso-Sanz, Ramon
name: Adamatzky, Andrew
Publisher: name: arXiv
Year: 2012
Subjects: subject: Emerging Technologies (cs.ET)
subject: Formal Languages and Automata Theory (cs.FL)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: A β-skeleton is a proximity undirected graph whose connectivity is determined by the parameter β. We study β-skeleton automata where every node is a finite state machine taking two states, and updating its states depending on the states of adjacent automata-nodes. We allow automata-nodes to remember their previous states. In computational experiments we study how memory affects the global space-time dynamics on β-skeleton automata.
Towards Semantic Integration of Federated Research Data
Creators: name: Chamanara, Javad
name: Kraft, Angelina
name: Auer, Sören
name: Koepler, Oliver
Publisher: name: Berlin : Springer
Year: 2019
Subjects: subject: Semantic interoperation
subject: Ontology development
subject: (Meta)Data harmonization
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::020 | Bibliotheks- und Informationswissenschaft

description: Digitization of the research (data) lifecycle has created a galaxy of data nodes that are often characterized by sparse interoperability. With the start of the European Open Science Cloud in November 2018 and facing the upcoming call for the creation of the National Research Data Infrastructure (NFDI), researchers and infrastructure providers will need to harmonize their data efforts. In this article, we propose a recently initiated proof-of-concept towards a network of semantically harmonized Research Data Management (RDM) systems. This includes a network of research data management and publication systems with semantic integration at three levels, namely, data, metadata, and schema. As such, an ecosystem for agile, evolutionary ontology development, and the community-driven definition of quality criteria and classification schemes for scientific domains will be created. In contrast to the classical data repository approach, this process will allow for cross-repository as well as cross-domain data discovery, integration, and collaboration and will lead to open and interoperable data portals throughout the scientific domains. At the joint lab of L3S research center and TIB Leibniz Information Center for Science and Technology in Hanover, we are developing a solution based on a customized distribution of CKAN called the Leibniz Data Manager (LDM). LDM utilizes the CKAN’s harvesting functionality to exchange metadata using the DCAT vocabulary. By adding the concept of semantic schema to LDM, it will contribute to realizing the FAIR paradigm. Variables, their attributes and relationships of a dataset will improve findability and accessibility and can be processed by humans or machines across scientific domains. We argue that it is crucial for the RDM development in Germany that domain-specific data silos should be the exception, and that a semantically-linked network of generic and domain-specific research data systems and services at national, regional, and organization levels should be promoted within the NFDI initiative.
An X-ray study of the supernova remnant G20.0-0.2 and its surroundings
Creators: name: Petriella, Alberto
name: Paron, Sergio
name: Giacani, Elsa
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Aims: We study the supernova remnant G20.0-0.2 and its surroundings in order to look for the high energy counterpart of the radio nebula and to find evidence of interaction between the shock front and the interstellar medium. Methods: We used Chandra archival observations to analyze the X-ray emission from the supernova remnant. The surrounding gas was investigated using data extracted from the Galactic Ring Survey, the VLA Galactic Plane Survey, the Galactic Legacy Infrared Midplane Survey Extraordinaire, and the Bolocam Galactic Plane Survey. Results: G20.0-0.2 shows diffuse X-ray emission from the central region of the radio remnant. Although the current data do not allow us to distinguish between a thermal or non-thermal origin for the X-ray diffuse emission, based on the radio properties we suggest a synchrotron origin as the most favorable. The hard X-ray point source CXO J182807.4-113516 appears located at the geometrical center of the remnant and is a potential candidate to be the pulsar powering the nebula. We found a molecular cloud adjacent to the flattest border of G20.0-0.2, indicating a probable interaction between the shock front of the remnant and the molecular gas. Several young stellar object candidates are found located in the brightest region of the molecular emission, and over a millimeter continuum source and a dark cloud. This distribution is an indication of an active star forming region around the supernova remnant.
description: 13 pages, 10 figures, accepted for publication in A&A. Figures degraded to reduce file size
Self-interaction of an arbitrary moving dislocation
Creators: name: Kazinski, P. O.
name: Ryakin, V. A.
name: Sokolov, A. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The action functional for a linear elastic medium with dislocations is given. The equations of motion following from this action reproduce the Peach-Köhler and Lorentzian forces experienced by dislocations. The explicit expressions for singular and finite parts of the self-force acting on a curved dislocation are derived in the framework of linear theory of elasticity of an isotropic medium. The velocity of dislocation is assumed to be arbitrary but less than the shear wave velocity. The slow speed and near-sonic motions of a dislocation are investigated. In the near-sonic limit, the explicit expression for the leading contribution to the self-force is obtained. In the case of slowly moving dislocations, the effective equations of motion derived in the present paper reproduce the known results.
description: 43 pp., some comments added and some terms changed
Thickness uniformity measurements and damage threshold tests of large-area GaAs/AlGaAs crystalline coatings for precision interferometry
Creators: name: Koch, P.
name: Cole, G.D.
name: Deutsch, C.
name: Follman, D.
name: Heu, P.
name: Kinley-Hanlon, M.
name: Kirchhoff, R.
name: Leavey, S.
name: Lehmann, J.
name: Oppermann, P.
name: Rai, A.K.
name: Tornasi, Z.
name: Wöhler, J.
name: Wu, D.S.
name: Zederbauer, T.
name: Lück, H.
Publisher: name: Washington, DC : OSA - The Optical Society
Year: 2019
Subjects: subject: Gallium arsenide
subject: Gravity waves
subject: III-V semiconductors
subject: Interferometers
subject: Interferometry
subject: Ion beams
subject: Laser damage
subject: Reflection
subject: Reflective coatings
subject: Thermal noise
subject: Crystalline coatings
subject: Highly reflective coatings
subject: Laser induced damage thresholds
subject: Sensitive measurement
subject: Small angle scattering
subject: Surface figure error
subject: Thickness uniformity
subject: Thickness variation
subject: Semiconducting gallium
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Precision interferometry is the leading method for extremely sensitive measurements in gravitational wave astronomy. Thermal noise of dielectric coatings poses a limitation to the sensitivity of these interferometers. To decrease coating thermal noise, new crystalline GaAs/AlGaAs multilayer mirrors have been developed. To date, the surface figure and thickness uniformity of these alternative low-loss coatings has not been investigated. Surface figure errors, for example, cause small angle scattering and thereby limit the sensitivity of an interferometer. Here we measure the surface figure of highly reflective, substrate-transferred, crystalline GaAs/AlGaAs coatings with a custom scanning reflectance system. We exploit the fact that the reflectivity varies with the thickness of the coating. To increase penetration into the coating, we used a 1550 nm laser on a highly reflective coating designed for a center wavelength of 1064 nm. The RMS thickness variation of a two inch optic was measured to be 0.41 ± 0.05 nm. This result is within 10% of the thickness uniformity, of 0.37 nm RMS, achieved with ion-beam sputtered coatings for the aLIGO detector. We additionally measured a lower limit of the laser induced damage threshold of 64 MW/cm2 for GaAs/AlGaAs coatings at a wavelength of 1064 nm. © 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Effects of water stress on the growth of spiderplant (Gynandropsis gynandra (L.) Briq.) and African nightshade (Solanum spp.), two traditional leafy vegetables in Kenya
Creators: name: Masinde, Peter Wafula
Publisher: name: Hannover : Universität
Year: 2003
Subjects: subject: Leaf area development
subject: normalized transpiration ratio
subject: osmotic adjustment
subject: Dewey Decimal Classification::500 | Naturwissenschaften::580 | Pflanzen (Botanik)

description: [no abstract]
Probing the Pre-Reionization Epoch with Molecular Hydrogen Intensity Mapping
Creators: name: Gong, Yan
name: Cooray, Asantha
name: Santos, Mario G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Molecular hydrogen is now understood to be the main coolant of the primordial gas clouds leading to the formation of the very first stars and galaxies. The line emissions associated with molecular hydrogen should then be a good tracer of the matter distribution at the onset of reionization of the universe. Here we propose intensity mapping of H2 line emission in rest-frame mid-infrared wavelengths to map out the spatial distribution of gas at redshifts z > 10. We calculate the expected mean intensity and clustering power spectrum for several H2 lines. We find that the 0-0S(3) rotational line at a rest wavelength of 9.66 microns is the brightest line over the redshift range of 10 to 30 with an intensity of about 5 to 10 Jy/sr at z~15. To reduce astrophysical and instrumental systematics, we propose the cross-correlation between multiple lines of the H2 rotational and vibrational line emission spectrum. Our estimates of the intensity can be used as a guidance in planning instruments for future mid-IR spectroscopy missions such as SPICA.
description: 8 pages, 4 figures, 2 tables
title: Unter Glas und Rahmen. Druckgraphik der Romantik aus den Beständen des Landesmuseums Mainz und aus Privatbesitz. Ausstellung im Albrecht-Dürer-Haus Nürnberg vom 2. 7. - 26. 9. 1993
Creators: name: Berninger, Ulrike
Publisher: name: University Library Heidelberg
Year: 2016

description: [nicht vorhanden / not available]
Efficacy of new inhibitors of ethylene perception in improvement of the display quality of miniature potted roses (Rosa hybrida L.)
Creators: name: Buanong, Mantana
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2006
Subjects: subject: ACC synthase
subject: display quality
subject: ethylene
subject: ethylene perception and signal transduction
subject: gene expression
subject: inhibitors of ethylene receptor
subject: Rosa hybrida
subject: senescence
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin

description: [no abstract]
Strong coupling and quark masses from lattice QCD
Creators: name: McNeile, Craig
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: I review lattice QCD calculations of the strong coupling and quark masses.
description: Plenary talk at the International Workshop on Determination of the Fundamental Parameters of QCD. The paper is an extended version of the 10 pages submitted to be published in Mod. Phys. Lett. A
A review and experimental evaluation of deep learning methods for MRI reconstruction
Creators: name: Pal, Arghya
name: Rathi, Yogesh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Following the success of deep learning in a wide range of applications, neural network-based machine-learning techniques have received significant interest for accelerating magnetic resonance imaging (MRI) acquisition and reconstruction strategies. A number of ideas inspired by deep learning techniques for computer vision and image processing have been successfully applied to nonlinear image reconstruction in the spirit of compressed sensing for accelerated MRI. Given the rapidly growing nature of the field, it is imperative to consolidate and summarize the large number of deep learning methods that have been reported in the literature, to obtain a better understanding of the field in general. This article provides an overview of the recent developments in neural-network based approaches that have been proposed specifically for improving parallel imaging. A general background and introduction to parallel MRI is also given from a classical view of k-space based reconstruction methods. Image domain based techniques that introduce improved regularizers are covered along with k-space based methods which focus on better interpolation strategies using neural networks. While the field is rapidly evolving with plenty of papers published each year, in this review, we attempt to cover broad categories of methods that have shown good performance on publicly available data sets. Limitations and open problems are also discussed and recent efforts for producing open data sets and benchmarks for the community are examined.
description: Accepted for publication at the Journal of Machine Learning for Biomedical Imaging 2022:2022:001. pp 1-58 Submitted 09/2021; Published 02/2022
Saxifraga L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: S. Saxifraga L. Cat. 45. Auf etwas feuchten Felsen; auf Kalk. 3: Randa: rechte Talseite (Goudet 1898; vgl. Goudet Lit. 1900, S. 261); linke Talseite zwischen Randa und Täsch an zwei Stellen: Rumelen-Hohlichtgletscher, 1850 m, 1918 und 1920, und Vispufer unterhalb Täsch, 1440 m, 1920 (Huber); bei Zermatt am FUSS des Mettelhorns wieder beobachtet (Rieber 1951); «Saastal» (Besse). - 3a: Laggintal bei Biel; ganzes Gebiet der Gondo- Schluchtvon Gabibis Gondo, links der Doveria aufwärtsnach Alpien gehend, rechts nach Figenen und bis unter den Gipfel des Seehorns, etwa 2200 m (hier Frauenfelder 1941; höchste Stelle der Art im Wallis); mehrfachum Gondo und im unteren Zwischbergental,hier bis oberhalb Belleggen (alles: Becherer).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Chirale Olefin-Phosphinit-Hybridliganden auf Kohlenhydratbasis
Creators: name: Grugel, Holger
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2013
Subjects: subject: Asymmetric synthesis
subject: alkene-phosphinite-hybrid-ligands
subject: carbohydrates
subject: ligand-design
subject: pseudo-enantiomers
subject: catalytic kinetic resolution
subject: Asymmetrische Synthese
subject: Olefin-Phosphinit-Hybridliganden
subject: Kohlenhydrate
subject: Ligandendesign
subject: pseudo-Enantiomere
subject: katalytische kinetische Racematspaltung
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Constraints on Hydrodynamical Subgrid Models from Quasar Absorption Line Studies of the Simulated Circumgalactic Medium
Creators: name: Hummels, Cameron
name: Bryan, Greg
name: Smith, Britton
name: Turk, Matthew
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Cosmological hydrodynamical simulations of galaxy evolution are increasingly able to produce realistic galaxies, but the largest hurdle remaining is in constructing subgrid models that accurately describe the behavior of stellar feedback. As an alternate way to test and calibrate such models, we propose to focus on the circumgalactic medium. To do so, we generate a suite of adaptive-mesh refinement (AMR) simulations for a Milky-Way-massed galaxy run to z=0, systematically varying the feedback implementation. We then post-process the simulation data to compute the absorbing column density for a wide range of common atomic absorbers throughout the galactic halo, including H I, Mg II, Si II, Si III, Si IV, C IV, N V, O VI, and O VII. The radial profiles of these atomic column densities are compared against several quasar absorption line studies, to determine if one feedback prescription is favored. We find that although our models match some of the observations (specifically those ions with lower ionization strengths), it is particularly difficult to match O VI observations. There is some indication that the models with increased feedback intensity are better matches. We demonstrate that sufficient metals exist in these halos to reproduce the observed column density distribution in principle, but the simulated circumgalactic medium lacks significant multiphase substructure and is generally too hot. Furthermore, we demonstrate the failings of inflow-only models (without energetic feedback) at populating the CGM with adequate metals to match observations even in the presence of multiphase structure. Additionally, we briefly investigate the evolution of the CGM from z=3 to present. Overall, we find that quasar absorption line observations of the gas around galaxies provide a new and important constraint on feedback models.
description: 20 pages including 9 figures; Resubmitted to MNRAS; Tabulated data available at http://chummels.org/CGM.html
Aerodynamische Auslegung von Radialverdichtern für aktive kennfelderweiternde Maßnahmen
Creators: name: Fischer, Tore
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2021
Subjects: subject: Turbocharger
subject: Centrifugal compressor
subject: Performance-extending measures
subject: Abgasturbolader
subject: Radialverdichter
subject: Kennfelderweiternde Maßnahmen
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Moderne Ladungswechselstrategien bei Downsizing-Ottomotoren der zweiten Generation steigern die Anforderungen an das Aufladeaggregat zusehends. Neben einer großen stabilen Kennfeldbreite und hohen isentropen Wirkungsgraden im Teillastbereich steigen die erforderlichen Aufladegrade und folglich die Verdichterdruckverhältnisse kontinuierlich. Hierbei ist es notwendig, in den kostengetriebenen Hubraumklassen bis 2 Liter, die Applikation von mehrstufigen Aufladeaggregaten zu vermeiden. Aus diesem Grund wird aktuell der realisierbare Downsizing-Grad, der vom effektiven Mitteldruck bestimmt wird, durch das Aufladesystem begrenzt. In der vorliegenden Arbeit wird eine Auslegungsstrategie entwickelt, um die Anforderungen moderner Downsizing-Ottomotoren hinsichtlich des Ladedrucks, der stabilen Kennfeldbreite und des Teillastwirkungsgrads mit einem einstufigen Aufladeaggregat zu erfüllen. Hierbei wird der Ansatz verfolgt, dass sich die stabile Kennfeldbreite mit einer Querschnittsvariabilität in Form einer Irisblende am Verdichtereintritt und einer Breitenvariabilität des unbeschaufelten Diffusors signifikant erweitern lässt. Hieraus resultieren neue Freiheitsgrade bei der Auslegung der Verdichterstufe. Zusammenfassend wird der Nachweis erbracht, dass die vorgestellte Querschnittsvariabilität eine dimensionslose Kennfeldbreite von 80 % mit unterschiedlichen Verdichterstufen erreicht. Weiterhin wird das Potenzial aufgezeigt, das hierdurch bei der Verdichterentwicklung für Downsizing-Ottomotoren der zweiten Generation entsteht, wenn der Wirkungsgrad und das Stufendruckverhältnis bei der Verdichterauslegung in den Fokus gerückt werden.
Interplay of roughness/modulation and curvature at proximity
Creators: name: Krüger, Matthias
name: Golyk, Vladyslav A.
name: Bimonte, Giuseppe
name: Kardar, Mehran
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We show that roughness or surface modulations change the distance dependence of (power-law) interactions between curved objects at proximity. The modified scaling law is then simply related to the order of the first non-vanishing coefficient of the Taylor expansion of the distribution of separations between the surfaces. The latter can in principle be estimated by scanning measurements, or computed for well characterized modulations, and then used to predict short-distance scaling behavior in disparate experiments. For example, we predict that the radiative heat transfer between a rough sphere and a plate approaches a constant with decreasing separation. Similar saturation is expected for the Casimir force between dielectric or metallic surfaces with appropriate modulations over distinct length scales.
description: 5 pages, 2 figures