cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Piecing together the puzzle of NGC 5253: abundances, kinematics and WR stars
Creators: name: Westmoquette, M. S.
name: James, B.
name: Monreal-Ibero, A.
name: Walsh, J. R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present Gemini-S/GMOS-IFU optical spectroscopy of four regions near the centre of the nearby (3.8 Mpc) dwarf starburst galaxy NGC 5253. This galaxy is famous for hosting a radio supernebula containing two deeply embedded massive super star clusters, surrounded by a region of enhanced nitrogen abundance that has been linked to the presence of WR stars. We detected 11 distinct sources of red WR bump (CIV) emission over a 20" (~350 pc) area, each consistent with the presence of ~1 WCE-type star. WC stars are not found coincident with the supernebula, although WN stars have previously been detected here. We performed a multi-component decomposition of the Hα line across all four fields and mapped the kinematics of the narrow and broad (FWHM = 100-250 km/s) components. These maps paint a picture of localised gas flows, as part of multiple overlapping bubbles and filaments driven by the star clusters throughout the starburst. We confirm the presence of a strong Hα velocity gradient over ~4.5" (~80 pc) coincident with the region of N/O enhancement, and high gas density known from previous study, and interpret this as an accelerating ionized gas outflow from the supernebula clusters. We measure the ionized gas abundances in a number of regions in the outer IFU positions and combine these with measurements from the literature to assess the radial abundance distribution. We find that the O/H and N/H profiles are consistent with being flat. Only the central 50 pc exhibits the well-known N/O enhancement, and we propose that the unusually high densities/pressures in the supernebula region have acted to impede the escape of metal-enriched hot winds from the star clusters and allow them to mix with the cooler phases, thus allowing these freshly processed chemicals to be seen in the optical.
description: 16 pages, accepted to A&A
title: The processor chain for the recycling of low-quality and small sized wood in the conditions of logging enterprises
Creators: name: Shadrin, A.A.
name: Gurba, A.S.
name: Semenkina, E.Yu.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The article is devoted to the creation of a processor chain for the recycling of low-quality wood raw materials for the most complete and comprehensive use and maximum charge of the equipment used. The conveyer scheme of the production of lumber and industrial chips is given.
An Efficient Approximation to the Likelihood for Gravitational Wave Stochastic Background Detection Using Pulsar Timing Data
Creators: name: Ellis, Justin
name: Siemens, Xavier
name: van Haasteren, Rutger
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Direct detection of gravitational waves by pulsar timing arrays will become feasible over the next few years. In the low frequency regime ($10^{-7}$ Hz -- $10^{-9}$ Hz), we expect that a superposition of gravitational waves from many sources will manifest itself as an isotropic stochastic gravitational wave background. Currently, a number of techniques exist to detect such a signal; however, many detection methods are computationally challenging. Here we introduce an approximation to the full likelihood function for a pulsar timing array that results in computational savings proportional to the square of the number of pulsars in the array. Through a series of simulations we show that the approximate likelihood function reproduces results obtained from the full likelihood function. We further show, both analytically and through simulations, that, on average, this approximate likelihood function gives unbiased parameter estimates for astrophysically realistic stochastic background amplitudes.
description: 10 pages, 3 figures
The use of physically constraining tools for grip-specific skill development in racket, stick and club sports: A scoping review
Creators: name: Busuttil, Nicholas
name: Roberts, Alexandra
name: Dunn, M
name: Connolly, Molly
name: Middleton, Kane
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 3202
subject: Clinical sciences
classificationCode: 5201
subject: Applied and developmental psychology
classificationCode: 4207
subject: Sports science and exercise

description: Coaches use physically constraining tools to supplement their coaching when developing sport-specific skills, however, their effectiveness is unknown. This scoping review aimed to understand the efficacy of physically constraining tools used in racket, stick, and club sports for grip-specific skill development. This scoping review followed the Joanna Briggs Institute methodology and PRISMA guidelines. Peer-reviewed research, including quasi-experimental, true-experimental, case studies, and grey literature were considered. Peer-reviewed sources were searched on Web of Science, Medline, and SPORTDiscus until October 6th, 2022. Exclusion criteria were (1) not original peer-reviewed research; (2) disabled participants or used for rehabilitation; or (3) not available in English. Data extracted were the type of tool, research foci, measures, and outcomes of the tool’s efficacy. Zero peer-reviewed sources were identified on the efficacy of using physically constraining tools for grip-specific skill development. Common trends identified from the excluded sources were explored to provide a basis for the importance of using physically constraining tools for grip-specific skill development. Many tools are used in coaching despite their unclear efficacy, however, the current results can guide future work to assess the acute and longitudinal effects of using these tools, specifically within the development and performance of sport-specific skills.
The large D limit of dimensionally continued gravity
Creators: name: Giribet, Gaston
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In a recent paper [arXiv:1302.6382] Emparan, Suzuki, and Tanabe studied general relativity in the limit in which the number of spacetime dimensions D tends to infinity. They showed that, in such limit, the theory simplifies notably. It reduces to a theory whose fundamental objects, black holes and black branes, behave as non-interacting particles. Here, we consider a different way of extending gravity to D dimensions. We present a special limit of dimensionally continued gravity in which black holes retain their gravitational interaction at large D and still have entropy proportional to the mass. The similarities and differences with the limit considered in [arXiv:1302.6382] are discussed.
description: 10 pages
Aplidium fuegiense Cunningham 1871
Creators: name: Sanamyan, Karen
name: Schories, Dirk
name: Sanamyan, Nadya
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Ascidiacea
Enterogona
Polyclinidae
Aplidium
Aplidium fuegiense

description: Aplidium fuegiense Cunningham, 1871
(Figures 5 C,D)
 Material examined: Chile, 10. region: Caleta Yerbas Buenas, 18m, one colony; 4. region: Punta de Choros, Bajo tiburon, 15m, one colony; La gruta, 30m, one colony.
 Remarks. Zooids of the present specimens agree with previous descriptions and colonies have small crowded oval bodies in the superficial layer of the tunic, a very characteristic feature allowing easy identification. In previous accounts, based on preserved material, the shape of colonies was described as extremely variable, and generally no obvious system of zooids could be recognized (Millar, 1960). Indeed, all examined preserved colonies are thick irregular masses without any recognizable systems. However, underwater photographs of the same specimens show that the shape of living colonies is rather characteristic: the surface is raised into several to numerous large conical lobes with a single cloacal siphon on the top of each lobe. Zooids open on the sides of these lobes and arranged along rather wide anastomosing cloacal canals converging to the top of the lobe (Figures 5 C,D).
 The material described by Van Name (1954) from Chile is certainly wrongly identified and consists of several species: reported number of stomach folds (12–24) is too high for A. fuegiense and range is too wide for one species.
description: Published as part of Sanamyan, Karen, Schories, Dirk & Sanamyan, Nadya, 2010, New records of aplousobranch ascidians from Central Chile, pp. 58-68 in Zootaxa 2537 on pages 60-61, DOI: 10.5281/zenodo.196669
Introduction and evaluation of a damping determination method based on the short-term fourier transform and resampling (stfr)
Creators: name: Hentschel, Olaf Peter
name: Panning-Von Scheidt, Lars
name: Wallaschek, Jörg
name: Denk, Markus
Publisher: name: Warszawa : Polish Soc. Theoretical & Applied Mechanics
Year: 2015
Subjects: subject: damping determination
subject: parameter identification
subject: resampling
subject: nonlinear dynamic analysis
subject: wavelet-logarithmic decrement
subject: huang spectral-analysis
subject: system-identification
subject: part 1
subject: modes
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: In the present paper, a frequency domain method for damping determination is presented. The described method is especially developed for low damped systems with well separated eigenfrequencies. Using the Short-Term Fourier transform and Resampling (STFR) of the signal, decay curves of several mode shapes can be identified and amplitude-dependent damping values can be calculated. Additionally, two common methods for damping determination are explained briefly. Finally, the quality of the introduced method is evaluated comparing the variances of the identified damping values by means of different methods. In this context, the damping for beams clamped in a suspended way is analyzed. Stainless steel is used as the specimen material.
title: Relationships Between School, Teacher, and Feature Characteristics and Teachers’ Access to Features Within Digital Curriculum Resources for Mathematics Instruction
Creators: name: Harmon, M. Jill
Publisher: name: Utah State University
Year: 2023

description: In 2019, RAND Corporation asked teachers which digital materials they used. This study expanded on this research by exploring the features contained in these programs. The purpose of this study was to investigate the relationships between teachers’ access to features and school (e.g., grand band, socioeconomic status), teacher (e.g., experience), and feature characteristics (e.g., feature choice). I report a significant regression model to predict the likelihood for a teacher to have access to each of the six features within differing contexts based on the characteristics.
To answer the research questions, I first reported descriptive statistics as percentages of teachers who had access to each of the six features, as well as predicted probabilities for access to each feature calculated from the null model of the multilevel logistical regression. These results showed that practice problems and instructional videos were significantly more likely than interactive scenarios for all grade band/socio- economic status combinations except teachers at high income high schools. This showed that traditional teaching methods (in the form of practice problems and instructional videos) still dominate other methods (e.g., interactive scenarios), even when teachers use digital curricula. Next, I used the final model to explore these probabilities within subgroups of the sample. Key results from this analysis showed that high school teachers were significantly less likely than elementary teachers to have access to all features except create/revise content. This sheds light on differences between elementary and high school curricula choices. Based on these findings, it appears that there is an important need for more high-quality digital programs for high school mathematics content, but these should not be developed at the expense of the ability to create and/or revise content. Last, the study contributed to the field by finding that significant differences in socioeconomic levels do in fact exist regarding digital material use, but only for middle school teachers.
title: ПРАВОВЫЕ ОСНОВЫ ДЕЯТЕЛЬНОСТИ ОБЩЕСТВЕННЫХ СОВЕТОВ В РЕСПУБЛИКЕ БЕЛАРУСЬ
Creators: name: Щербик, Дмитрий
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2019

description: В статье отмечаются проблемы функционирования общественного контроля и деятельности общественных советов в Республике Беларусь.
Evaluation of common tests for fracture characterisation of advanced high-strength sheet steels with the help of the FEA
Creators: name: Peshekhodov, Ilya
name: Dykiert, M.
name: Vucetic, Milan
name: Behrens, Bernd-Arno
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2016
Subjects: subject: Crack initiation
subject: Cracks
subject: Drawing (forming)
subject: Fracture
subject: Plastic deformation
subject: Strain
subject: Strain hardening
subject: Strain rate
subject: Tensile testing
subject: Damage variables
subject: Equivalent plastic strain
subject: Fracture characterisation
subject: Fracture characterization
subject: High strength sheets
subject: Plane strain tension
subject: Strain hardening rate
subject: Uniaxial tensions
subject: High strength steel
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: The paper presents results of evaluation of common tests for fracture characterization of advanced high-strength sheet steels with the help of the FEA. The tests include three in-plane shear tests, two uniaxial tension tests, two plane strain tension tests and two equibiaxial tension tests. Three high-strength steels with different yield loci, strain hardening rates and strengths in three different thicknesses each were used. The evaluation was performed based on the spatial distribution of the equivalent plastic strain and damage variable in the specimen at the moment of crack initiation as well as on the time variation of the stress state at the crack initiation location. For in-plane shear, uniaxial tension and plane strain tension, no test can be unconditionally recommended as disadvantages of all studied tests in these groups cannot be neglected. However, in each of these groups, a test can be chosen, which represents an acceptable compromise between its advantages and disadvantages: the shear test on an IFUM butterfly specimen for in-plane shear, the tensile test on a holed specimen for uniaxial tension and the tensile test on a waisted specimen for plane strain tension. On the contrary, the bulge test on a circular specimen with a punch of Ø 100 mm can be unconditionally recommended for equibiaxial tension. In the future, optimisation of the studied tests for in-plane shear, uniaxial tension and plane strain tension appears to be necessary.
Instability of Walker Propagating Domain Wall in Magnetic Nanowires
Creators: name: Hu, B.
name: Wang, X. R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Stability of the well-known Walker propagating domain wall (DW) solution of the Landau-Lifshitz-Gilbert equation is analytically investigated. Surprisingly, the Walker's rigid body propagating DW mode is not stable against the spin wave/wavepacket emission. In the low field region only stern spin waves are emitted while both stern and bow waves are generated under high fields. In a high enough field, but below the Walker breakdown field, the Walker solution could be convective/absolute unstable if the transverse magnetic anisotropy is larger than a critical value, corresponding to a significant modification of the DW profile and DW propagating speed.
description: 4 pages
title: Theodor Heuss. Politik durch Kultur. Eine Ausstellung des Arbeitskreises selbständiger Kulturinstitute e.V. (ASKI) - 30. 9. bis 18. 11. 1984. Mit einer Sonderabteilung "Heuss und das Germanische Nationalmuseum"
Creators: name: Veit, Ludwig
Publisher: name: University Library Heidelberg
Year: 2015

description: [nicht vorhanden / not available]
Photocatalytic activity and charge carrier dynamics of TiO2 powders with a binary particle size distribution
Creators: name: Sieland, Fabian
name: Schneider, Jenny
name: Bahnemann, Detlef W.
Publisher: name: Cambridge : Royal Society of Chemistry
Year: 2018
Subjects: subject: carrier dynamics
subject: photocatalytic activity
subject: TiO2
subject: titanium dioxide
subject: nitric oxide
subject: NO
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: The effects of the particle size distribution on the charge carrier dynamics and the photocatalytic activity of mixed titanium dioxide (TiO2) powder samples were investigated in this work. Instead of the synthesis of the small semiconductor particles, the binary particle size distributions of the powders were obtained by mixing commercially available TiO2 powders with different particle sizes. The pure anatase samples (average diameters: 7, 20, and 125 nm, respectively) were created via ultrasound treatment and discreet drying. The photocatalytic activity of the powder samples was assessed by the degradation of nitric oxide (NO) and acetaldehyde in the gas phase. Furthermore, the charge carrier kinetics was determined using transient absorption spectroscopy following pulsed laser excitation. Importantly, a recently published model based on fractal dimensions was used to fit the transient signals of the photo generated charge carriers in the TiO2 powder samples. The effects of the particle size on the acetaldehyde degradation could be explained by the formation of agglomerates, which reduce the available surface area of smaller particles. The fast oxidation of acetaldehyde on the surface of TiO2 by direct hole transfer was further independent of the observed charge carrier lifetimes on the microsecond time scale. The photocatalytic NO degradation, on the other hand, increased for samples containing larger amounts of small particles. The corresponding photonic efficiencies correlated well with the charge carrier lifetimes determined by the time-resolved studies. Hence, it was concluded that a long charge carrier lifetime generally leads to higher fractional conversions of NO. The employed fractal fit function was proved to be beneficial for the kinetic analysis of charge carrier recombination in TiO2, in direct comparison with a second order fit function. © 2018 the Owner Societies.
A compact high resolution ion mobility spectrometer for fast trace gas analysis
Creators: name: Kirk, Ansgar T.
name: Allers, Maria
name: Cochems, Philipp
name: Langejuergen, Jens
name: Zimmermann, Stefan
Publisher: name: Cambridge : Royal Society of Chemistry
Year: 2013
Subjects: subject: Ion mobility spectrometry
subject: high resolution
subject: compact
subject: isomers
subject: isotopes
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Drift tube ion mobility spectrometers (IMS) are widely used for fast trace gas detection in air, but portable compact systems are typically very limited in their resolving power. Decreasing the initial ion packet width improves the resolution, but is generally associated with a reduced signal-to-noise-ratio (SNR) due to the lower number of ions injected into the drift region. In this paper, we present a refined theory of IMS operation which employs a combined approach for the analysis of the ion drift and the subsequent amplification to predict both the resolution and the SNR of the measured ion current peak. This theoretical analysis shows that the SNR is not a function of the initial ion packet width, meaning that compact drift tube IMS with both very high resolution and extremely low limits of detection can be designed. Based on these implications, an optimized combination of a compact drift tube with a length of just 10 cm and a transimpedance amplifier has been constructed with a resolution of 183 measured for the positive reactant ion peak (RIP+), which is sufficient to e.g. separate the RIP+ from the protonated acetone monomer, even though their drift times only differ by a factor of 1.007. Furthermore, the limits of detection (LODs) for acetone are 180 ppt(v) within 1 s of averaging time and 580 pptv within only 100 ms.
Aplidium peruvianum Sanamyan & Schories 2004
Creators: name: Sanamyan, Karen
name: Schories, Dirk
name: Sanamyan, Nadya
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Ascidiacea
Enterogona
Polyclinidae
Aplidium
Aplidium peruvianum

description: Aplidium peruvianum Sanamyan & Schories, 2004
(Figure 5 E,F)
 Aplidium peruvianum Sanamyan, Schories, 2004: 193.
 Material examined: Chile, 4. region: Punta de Choros, Rhodymenia, 10m, two colonies; La gruta, 10m, one colony; Bajo tiburon, 17m, one colony; Las Tacas (Coquimbo), several colonies.
 Remarks. Originally described from the coasts of Peru the species is now recorded from Central Chile. It is characterized by hard massive colonies with distinctive circular, oval, or somewhat irregular systems of zooids separated by ridges of the test. The colonies and zooids resemble Atlantic species A. stellatum (Verrill, 1871), see Sanamyan & Schories (2004) and Sanamyan & Gleason (2009) for details.
description: Published as part of Sanamyan, Karen, Schories, Dirk & Sanamyan, Nadya, 2010, New records of aplousobranch ascidians from Central Chile, pp. 58-68 in Zootaxa 2537 on page 61, DOI: 10.5281/zenodo.196669
Impact of resveratrol on glucose control, hippocampal structure and connectivity, and memory performance in patients with mild cognitive impairment
Creators: name: Köbe, Theresa
name: Witte, A. Veronica
name: Schnelle, Ariane
name: Tesky, Valetina A.
name: Pantel, Johannes
name: Schuchardt, Jan Philipp
name: Hahn, Andreas
name: Bohlken, Jens
name: Grittner, Ulrike
name: Flöel, Agnes
Publisher: name: Lausanne : Frontiers Media Sa
Year: 2017
Subjects: subject: Hippocampus
subject: MCI
subject: Memory performance
subject: Resting-state functional connectivity
subject: Resveratrol
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: In healthy older adults, resveratrol supplementation has been shown to improve long-term glucose control, resting-state functional connectivity (RSFC) of the hippocampus, and memory function. Here, we aimed to investigate if these beneficial effects extend to individuals at high-risk for dementia, i.e., patients with mild cognitive impairment (MCI). In a randomized, double-blind interventional study, 40 well-characterized patients with MCI (21 females; 50–80 years) completed 26 weeks of resveratrol (200 mg/d; n = 18) or placebo (1,015 mg/d olive oil; n = 22) intake. Serum levels of glucose, glycated hemoglobin A1c and insulin were determined before and after intervention. Moreover, cerebral magnetic resonance imaging (MRI) (3T) (n = 14 vs. 16) was conducted to analyze hippocampus volume, microstructure and RSFC, and neuropsychological testing was conducted to assess learning and memory (primary endpoint) at both time points. In comparison to the control group, resveratrol supplementation resulted in lower glycated hemoglobin A1c concentration with a moderate effect size (ANOVARM p = 0.059, Cohen's d = 0.66), higher RSFC between right anterior hippocampus and right angular cortex (p < 0.001), and led to a moderate preservation of left anterior hippocampus volume (ANOVARM p = 0.061, Cohen's d = 0.68). No significant differences in memory performance emerged between groups. This proof-of-concept study indicates for the first-time that resveratrol intake may reduce glycated hemoglobin A1c, preserves hippocampus volume, and improves hippocampus RSFC in at-risk patients for dementia. Larger trials with longer intervention time should now determine if these benefits can be validated and extended to cognitive function.
State limits: the boundaries of Victoria and the resolution of boundary uncertainties
Creators: name: Moore, Garry Kenneth
Publisher: name: Monash University
Year: 2016
Subjects: Uncategorized

description: '[T]o prevent every subject of discord, every occasion of quarrel, the limits of territories ought to be marked with clearness and precision'. So wrote the renowned Swiss legal theorist, Emer de Vattel, in 1797. However, a close historical examination of the boundaries of the State of Victoria reveals that the limits of Victorian territory were laid down with anything but clearness or precision. The external boundaries of Victoria are to be found on the southern, western and northern margins of the State. In the south, they extend around Victoria's ocean coastline from Cape Howe in the east to Discovery Bay in the west. The State's western boundary runs from Discovery Bay in the south to the Murray River in the north. Victoria's northern boundaries commence at Cape Howe and proceed in a straight line north westward to the nearest source of the Murray to that Cape. They then follow the Murray as it winds its way downstream to South Australia. This Thesis traces the making and marking of Victoria's boundaries. Although firmly grounded in law, it draws on a range of other disciplines, including history, geography, geomorphology and spatial science. The Thesis examines the boundaries consecutively in the order in which they were first laid down. Commencing with those in the south, it then moves to the western boundary before finally dealing with the State's northern boundaries. Victoria's boundaries find their ongms m a senes of Imperial prescriptions embodied in British legislation and subordinate legislation, and in Colonial Governors' Commission which issued in the exercise of the Royal prerogative. Rather than settling the proper locations of Victoria's boundaries as intended, the Imperial prescriptions have generated both uncertainty and controversy over many years. Notwithstanding a number of important decisions of the Privy Council and the High Court, this Thesis demonstrates that significant uncertainty still surrounds elements in the boundary prescriptions. Uncertainty is not confined to Victoria's boundary prescriptions. It also extends to the location at which much of the State's western boundary is presently marked on the ground, a location which has been widely perceived to have been finally fixed by the decision of the Judicial Committee of the Privy Council in South Australia v Victoria (1914) 18 CLR 115. This uncertainty, too, is explored in detail in the Thesis. Having identified and examined the uncertainties which are still apparent on Victoria's southern, western and northern boundaries, the Thesis concludes by looking at whether the doctrine of prescription and acquiescence may be applied to resolve some or all of them.
Minimal spanning tree algorithm for gamma-ray source detection in sparse photon images: cluster parameters and selection strategies
Creators: name: Campana, R.
name: Bernieri, E.
name: Massaro, E.
name: Tinebra, F.
name: Tosti, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The minimal spanning tree (MST) algorithm is a graph-theoretical cluster-finding method. We previously applied it to gamma-ray bidimensional images, showing that it is quite sensitive in finding faint sources. Possible sources are associated with the regions where the photon arrival directions clusterize. MST selects clusters starting from a particular "tree" connecting all the point of the image and performing a cut based on the angular distance between photons, with a number of events higher than a given threshold. In this paper, we show how a further filtering, based on some parameters linked to the cluster properties, can be applied to reduce spurious detections. We find that the most efficient parameter for this secondary selection is the magnitude M of a cluster, defined as the product of its number of events by its clustering degree. We test the sensitivity of the method by means of simulated and real Fermi-Large Area Telescope (LAT) fields. Our results show that sqrt(M) is strongly correlated with other statistical significance parameters, derived from a wavelet based algorithm and maximum likelihood (ML) analysis, and that it can be used as a good estimator of statistical significance of MST detections. We apply the method to a 2-year LAT image at energies higher than 3 GeV, and we show the presence of new clusters, likely associated with BL Lac objects.
description: 16 pages, 7 figures. Accepted for publication in Astrophysics and Space Science
Insight into the mechanism of modulated syntheses: in situ synchrotron diffraction studies on the formation of Zr-fumarate MOF
Creators: name: Zahn, Gesa
name: Zerner, Philip
name: Lippke, Jann
name: Kempf, Fabian L.
name: Lilienthal, Sebastian
name: Schroeder, Christian A.
name: Schneider, Andreas M.
name: Behrens, Peter
Publisher: name: Cambridge : Royal Society of Chemistry
Year: 2014
Subjects: subject: metal-organic frameworks
subject: x-ray-diffraction
subject: phase-change
subject: crystallization
subject: kinetics
subject: growth
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: In this work, the formation of a Zr-based metal-organic framework (MOF), Zr-fumarate MOF (Zr-fum MOF), is studied in situ by energy-dispersive diffraction. The Zr-fum MOF can be synthesised in DMF as well as in water-based synthesis systems. In both cases, its formation requires modulation, i.e. a monocarboxylic acid which is used as the modulator has to be added to the synthesis mixture. In general, different mechanisms of modulation are possible, for example, deprotonation of the linker molecule (deprotonation modulation) or coordination modulation (wherein the molecules of the modulator compete with the linker molecules for the coordination sites at the inorganic building units). Independently of the specific mechanism, modulation often improves the reproducibility of the MOF synthesis and the crystallinity of the product and may be used to control crystal size and morphology. This study is the first to investigate the kinetics of modulated MOF syntheses with regard to coordination modulation. According to this concept, the addition of a modulator usually decelerates the reaction. Our kinetic investigations show that this is the case for the formation of Zr-fum MOF in the water-based synthesis with formic acid used as a modulator. On the contrary, the addition of formic acid to the DMF-based synthesis results in an accelerating effect. This unexpected effect can be attributed to a small amount of water present in formic acid. Correspondingly, the addition of water to the synthesis mixture also showed an accelerating effect. These investigations emphasise the subtle interplay of the different ingredients in a MOF synthesis. In the case of the Zr-fum MOF, both the modulator formic acid and the water content strongly affect the kinetics of crystallisation. Quantitative evaluation of the kinetic data using the Gualtieri equation provides additional insight into the mechanisms of coordination-modulated MOF formation reactions and excludes the idea of deprotonation modulation.
Heat requirement of greenhouses including latent heat flux = Wärmebedarf von Gewächshäusern unter Berücksichtigung des latenten Wärmetransportes
Creators: name: Tantau, Hans-Jürgen
Publisher: name: Darmstadt : Kuratorium für Technik und Bauwesen in der Landwirtschaft e. V. (KTBL)
Year: 2013
Subjects: subject: Black out system
subject: Energy balance
subject: Greenhouse
subject: Heat demand
subject: Heat transfer coefficient
subject: Latent heat flux
subject: Thermal screen
subject: U-value
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin

description: Unlike buildings, the heat demand of greenhouses is affected also by the evaporation of the respective crop. Due to condensation of water vapour inside the covering material, latent heat is converted into sensible heat and transported outwards through the covering material. The portion of latent heat can increase to more than 50 % of the internal heat transfer and is therefore a significant heat flux, which must be considered in calculations of heat demand. The heat transfer coefficients (U-values), as they are given in literature, are only valid for dry conditions without condensation. In this work, a simplified methodological approach was chosen using heat transfer resistances to consider the latent heat flux and thus, to calculate U-values for greenhouse conditions including condensation.
description: Im Unterschied zu Gebäuden wird der Wärmebedarf eines Gewächshauses auch durch die Evaporation der jeweiligen Kultur beeinflusst. Bei der Kondensation des Wasserdampfes am Bedachungsmaterial wird die latente Wärme wieder in sensible Wärme umgewandelt und durch das Bedachungsmaterial nach außen transportiert. Latente Wärme kann einen Anteil von über 50 % am inneren Wärmeübergang erreichen und ist deshalb ein bedeutender Wärmestrom, der bei Wärmebedarfsrechnungen berücksichtigt werden muss. Die Wärmedurchgangskoeffizienten (U-Werte), wie sie in der Literatur angegeben werden, gelten nur für trockene Bedingungen ohne Kondensation. In der vorliegenden Arbeit wird ein vereinfachter methodischer Ansatz mit Wärmedurchgangs- und Wärmeübergangswiderständen beschrieben, mit dem der latente Wärmetransport berücksichtigt und U-Werte berechnet werden können, die für Gewächshausbedingungen mit Kondensation gelten.
Multimode Phonon Cooling via Three Wave Parametric Interactions with Optical Fields
Creators: name: Agarwal, G. S.
name: Jha, Sudhanshu S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We discuss the possible cooling of different phonon modes via three wave mixing interactions of vibrational and optical modes. Since phonon modes exhibit a variety of dispersion relations or frequency spectra with diverse spatial structures, depending on the shape and size of the sample, we formulate our theory in terms of relevant spatial mode functions for the interacting fields in any given geometry. We discuss the possibility of Dicke like collective effects in phonon cooling and present explicit results for simultaneous cooling of two phonon modes via the anti-Stokes up conversions. We show that the bimodal cooling should be observable experimentally.
Thermodynamic investigations on the laser ablation rate of silicon over five fluence decades
Creators: name: Schütz, V.
name: Stute, U.
name: Horn, A.
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2013
Subjects: subject: Laser ablation
subject: Silicon
subject: Thermodynamics
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Laser ablation of silicon is investigated with a large set of laser parameters to determine the ablation rate over five laser fluence decades. A thermodynamic model approach for the ablation of silicon has been derived. This simplified model determines the achievable ablation depth per pulse as a function of the applied laser fluence ranging from femtosecond to microsecond laser pulse duration. Furthermore different laser wavelengths from near-infrared to ultra-violet are investigated to determine the dependence on the optical penetration depth and on the ablation efficiency. The measured ablation depth per pulse is in agreement to the models predictions with the restrictions made.
Carex echinata
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: C.echinata X foetida - l: Blantzin ob Emaney (Coquoz).- 2:Montagne de Fully (Oberholzer1928). - 4:Alp Auf dem Blatt im Binntal (Kükenthal1899in herb. Basel); unterhalb Gletsch (Kneucker, P). An den drei ersten Stellen in der Kombination C. echinata var. grypos X foetida.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Berlin Universities Publishing (BerlinUP) – A joint diamond open access publisher for Berlin's Universities - presentation at the 3rd AEUP Conference "Publishing in Nervous Times"
Creators: name: Wiese, Robert
Publisher: name: Zenodo
Year: 2023
Subjects: university publishing
diamond OA
open access
academic publishing
scholarly communication

description: A presentation by Robert Wiese about Berlin Universities Publishing (BerlinUP) – A joint diamond open access publisher for Berlin’s Universities presented at the 3rd AEUP Conference "Publishing in Nervous Times" on 16 May 2023 in Tallinn, Estonia.
A novel approach for high deposition rate cladding with minimal dilution with an arc - Laser process combination
Creators: name: Barroi, A.
name: Hermsdorf, J.
name: Prank, U.
name: Kaierle, S.
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2013
Subjects: subject: Arc
subject: Cladding
subject: High-deposition rate
subject: Laser
subject: Low dilution
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: First results of the process development of a novel approach for a high deposition rate cladding process with minimal dilution are presented. The approach will combine the enormous melting potential of an electrical arc that burns between two consumable wire electrodes with the precision of a laser process. Separate test for the plasma melting and for the laser based surface heating have been performed. A steadily burning arc between the electrodes could be established and a deposition rate of 10 kg/h could be achieved. The laser was able to apply the desired heat profile, needed for the combination of the processes. Process problems were analyzed and solutions proposed.
The origin of the helicity hemispheric sign rule reversals in the mean-field solar-type dynamo
Creators: name: Pipin, V. V.
name: Zhang, H.
name: Sokoloff, D. D.
name: Kuzanyan, K. M.
name: Gao, Y.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Observations of proxies of the magnetic helicity in the Sun over the past two solar cycles revealed reversals of the helicity hemispheric sign rule (negative in the North and positive in the South hemispheres). We apply the mean-field solar dynamo model to study the reversals of the magnetic helicity sign for the dynamo operating in the bulk of the solar convection zone. The evolution of the magnetic helicity is governed by the conservation law. We found that the reversal of the sign of the small-scale magnetic helicity follows the dynamo wave propagating inside the convection zone. Therefore, the spatial patterns of the magnetic helicity reversals reflect the processes which contribute to generation and evolution of the large-scale magnetic fields. At the surface the patterns of the helicity sign reversals are determined by the magnetic helicity boundary conditions at the top of the convection zone. We demonstrate the impact of fluctuations in the dynamo parameters and variability in dynamo cycle amplitude on the reversals of the magnetic helicity sign rule. The obtained results suggest that the magnetic helicity of the large-scale axisymmetric field can be treated as an additional observational tracer for the solar dynamo.
description: 9 pages, 5 figures
title: IZ. 10. Mai bis 25. August 1985. Leben und Arbeiten im Industriezeitalter. Eine Ausstellung zur Wirtschafts- und Sozialgeschichte Bayerns seit 1850. Schule um 1900
Creators: name: Henschel, Horst
Publisher: name: University Library Heidelberg
Year: 2015

description: [nicht vorhanden / not available]
Laser-welded Dissimilar Steel-aluminum Seams for Automotive Lightweight Construction
Creators: name: Schimek, M.
name: Springer, A.
name: Kaierle, S.
name: Kracht, D.
name: Wesling, V.
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2012
Subjects: subject: aluminum
subject: dissimilar materials
subject: laser
subject: overlap welding
subject: penetration depth
subject: steel
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: By reducing vehicle weight, a significant increase in fuel efficiency and consequently a reduction in CO 2 emissions can be achieved. Currently a high interest in the production of hybrid weld seams between steel and aluminum exists. Previous methods as laser brazing are possible only by using fluxes and additional materials. Laser welding can be used to join steel and aluminum without the use of additives. With a low penetration depth increases in tensile strength can be achieved. Recent results from laser welded overlap seams show that there is no compromise in strength by decreasing penetration depth in the aluminum.
A Simulation-Based Study of Operational Vulnerabilities and Contingency Planning for Smart Extraterrestrial Habitats
Creators: name: Pritchard, Kenneth A
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Aerospace engineering not elsewhere classified

description: Although decades of experience in human spaceflight have produced and refined a wealth of operational knowledge, the unique challenges posed to long-term extraterrestrial surface habitats will require new approaches to mission design. The key objectives of this thesis are to develop an understanding of 1) how to use simulation to study these habitats and 2) how to make contingency plans for these habitats under complex, changing conditions. In order to accurately represent the challenges posed, we identify the common qualities of mission architectures that are likely to be present in near-future habitats. These qualities are used to formulate sample crew schedules that contribute to developing realistic models for meaningful research. We discuss the development of such models and demonstrate the suitability of simulation to enable the design and study of resilient space habitats. Simulation can be used as a tool to understand the challenges and consequences associated with decision making, as well as the importance of resilient design choices in a hazard-prone environment. We then identify aspects of vulnerability in space habitat mission operations, the subfactors that influence changes in habitat vulnerability, and the effects of each identified category of vulnerability. These ‘vulnerability factors’ are subsystem availability, environmental conditions, safety control options, and recent events. Each vulnerability factor has several subfactors that influence its change during a mission.
 The set of vulnerability factors is significant because each captures some category of behavior in surface habitats that changes over time and impacts the likelihood or consequences of risks to the habitat. We use these vulnerability factors to formulate six research questions which can be addressed via simulation-based research. A simulation set plan is developed to highlight the significant concepts at play in each research question. Finally, we conduct trials and analyses of these questions via simulation by injecting faults into a modular coupled virtual testbed for space habitats. The results of the simulations are used to develop lists of key implications for each vulnerability factor in practice. In addition, the lessons learned over the course of simulation set design and the usage of the simulation tool are discussed to support future simulation-based research efforts. We conclude by summarizing the major findings and potential for future work in the area.
Laser Surface Treatment of Sintered Alumina
Creators: name: Hagemann, R.
name: Noelke, C.
name: Kaierle, S.
name: Wesling, V.
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2012
Subjects: subject: alumina
subject: aluminum oxide
subject: ceramic
subject: laser cladding
subject: laser sintering
subject: rapid manufacturing
subject: remelting
subject: surface treatment
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Sintered alumina ceramics are used as refractory materials for industrial aluminum furnaces. In this environment the ceramic surface is in permanent contact with molten aluminum resulting in deposition of oxidic material on its surface. Consequently, a lower volume capacity as well as thermal efficiency of the furnaces follows. To reduce oxidic adherence of the ceramic material, two laser-based surface treatment processes were investigated: a powder- based single-step laser cladding and a laser surface remelting. Main objective is to achieve an improved surface quality of the ceramic material considering the industrial requirements as a high process speed.
title: IZ. 10. Mai bis 25. August 1985. Leben und Arbeiten im Industriezeitalter. Eine Ausstellung zur Wirtschafts- und Sozialgeschichte Bayerns seit 1850. Zur Gewerbeförderung
Creators: name: Deneke, Bernward
Publisher: name: University Library Heidelberg
Year: 2015

description: [nicht vorhanden / not available]
title: Kinematic analysis of the mechanism of crank-slider press
Creators: name: Dvornikov, L.T.
name: Mazharin, A.V.
name: Khujaev, Khujaev
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The article presents the solution to the problem of constructing a plan of speeds for the flat mechanism of the crank-slider press.
UV-laser ablation of fibre reinforced composites with ns-pulses
Creators: name: Dittmar, H.
name: Gäbler, F.
name: Stute, U.
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2013
Subjects: subject: CFRP
subject: Composites
subject: GFRP
subject: Laser ablation
subject: Ns
subject: UV
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Within this work the ablation behaviour of both carbon and glass fibre reinforced epoxy resin was assessed when ablated by a nanosecond-pulsed laser source emitting radiation in the ultra-violet spectrum. The investigation focussed on the influences of pulse overlap, focus spot diameter and resulting fluence on process quality and machining time. Results showed that ns-pulsed UV-lasers are capable of machining both types of fibre reinforced composites, while achieving good quality surfaces without burn marks or otherwise heat-damaged areas.
Unit spectra of K-theory from strongly self-absorbing C*-algebras
Creators: name: Dadarlat, Marius
name: Pennig, Ulrich
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Topology (math.AT)
subject: K-Theory and Homology (math.KT)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 55N15 55P42 46L80

description: We give an operator algebraic model for the first group of the unit spectrum $gl_1(KU)$ of complex topological K-theory, i.e. $[X, BGL_1(KU)]$, by bundles of stabilized infinite Cuntz C*-algebras $O_{\infty} \otimes \K$. We develop similar models for the localizations of $KU$ at a prime $p$ and away from $p$. Our work is based on the $\mathcal{I}$-monoid model for the units of $K$-theory by Sagave and Schlichtkrull and it was motivated by the goal of finding connections between the infinite loop space structure of the classifying space of the automorphism group of stabilized strongly self-absorbing C*-algebras that arose in our generalization of the Dixmier-Douady theory and classical spectra from algebraic topology.
description: 25 pages