cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Neutrinoless double beta decay
Creators: name: Zuber, K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The physics potential of neutrinoless double beta decay is discussed. Furthermore, experimental considerations are presented as well as the current status of experiments. Finally an outlook towards the future, work on nuclear matrix elements and alternative processes is given.
description: Proceedings Lepton-Photon 2011 Conference, to appear in Pramana, 10 pages
Zur Geschichte der Schiffbauforschung in Hamburg
Creators: name: Krappinger, Odo
Publisher: name: TUHH Universitätsbibliothek
Year: 1990
Subjects: classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: Zur Geschichte der Schiffbauforschung in Hamburg
A Stellar Census Of The 32 Ori Moving Group
Creators: name: Bell, Cameron P. M.
name: Murphy, Simon J.
name: Mamajek, Eric E.
Publisher: name: Zenodo
Year: 2016
Subjects: stars: kinematics
stars: pre-main-sequence
open clusters and associations: individual: 32 Ori
techniques: spectroscopy

description: The 32 Ori moving group was discovered almost a decade ago and despite the fact that it represents the first northern, young (~20 Myr) stellar aggregate within 100 pc of the Sun, a comprehensive characterisation of the stellar content of the group has yet to be performed. We hereby present the first large-scale spectroscopic survey for new (predominantly low-mass K- and M-type) members of the 32 Ori moving group after combining kinematic and photometric data to select candidate members with Galactic space motion and positions in colour-magnitude space consistent with group membership. Final memberships are assigned on the basis of a combination of radial velocity, Hα emission and Li absorption diagnostics. We identify ~25 new members, thereby increasing the number of known 32 Ori moving group members by a factor of ~3. Finally, we demonstrate consistent ages for the group based on isochronal fitting in the colour-magnitude diagram and the location of the Li depletion boundary. This consistency suggests that the group is essentially coeval with the Beta Pictoris moving group with an age in the range 20-25 Myr. In the era of SPHERE, GPI, ALMA, etc. this group therefore represents a benchmark region for direct-imaging studies of circumstellar disc evolution (especially during the epoch of terrestrial planet formation) and, of course, extrasolar planets.
description: Poster #150
description: {"references": ["Bell, Cameron P. M., Mamajek, Eric E. and Naylor, Tim, 2015, MNRAS, 454, 593", "Burgasser, Adam J., Lopez, Mike A., Mamajek, Eric E., et al., 2016, ApJ, 820, 32", "Mamajek, Eric E., 2007, in IAU Symposium, Vol. 237, Triggered Star Formation in a Turbulent ISM, Elmegreen B. G., Palous J., eds., p. 442"]}
Precise abundance analysis of the outer halo globular cluster M 75
Creators: name: Kacharov, Nikolay
name: Koch, Andreas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Globular clusters (GCs) are the oldest stellar systems in the Milky Way. Long time considered as simple stellar populations, nowadays we recognize their complex star formation history through precise abundance analysis of a variety of chemical elements in individual cluster members. Although we do not necessarily see clues for multiple populations in all GC colour-magnitude diagrams, all GCs present significant spreads and certain anticorrelations between their light and alpha element abundances. Furthermore, the heavy element abundances in individual stars of the primordial generation and their comparison to halo field stars and dwarf galaxies could provide us with valuable information about the very first stars that could have formed in GCs. M75 is a unique outer halo (galactocentric distance of ~15 kpc) GC with a peculiar Horizontal Branch morphology. Here we present the first abundance measurements of 16 individual red giants from high resolution spectroscopy. The cluster is metal rich ([Fe/H] = -1.17 +/- 0.02), alpha-enhanced, and shows a marginal spread in [Fe/H] of 0.07 dex, typical of most GCs of similar luminosity. The O-Na anticorrelation is clearly visible, showing at least two generations of stars, formed on a short timescale. We also discuss r- and s-process element abundances in the context of the earliest cluster enrichment phases.
description: 3 pages, FIRST STARS IV conference proceeding
A view of the city : the urban landscape and its architectural imagery in the Ashburnham Pentateuch
Creators: name: Tuttle, Kimberly
Publisher: name: University of British Columbia
Year: 2009

description: Of the surviving eighteen folios illustrating the Genesis and Exodus narratives in the late antique manuscript, the Ashburnham Pentateuch (“AP”), all but a few pages are dominated by elaborate cityscapes. Indeed, as a work of art, the city defines much of the narrative space in the miniatures. It provides an immediate visual contact with the Pentateuch stories through a combination of framing the Old Testament figures within an urban perspective which displays both interior and exterior city views. This imagery of the city is arguably one of the most perplexing features of the AP. It does not reflect the pictorial conventions of cities in the art of this period, nor does it accurately represent the wilderness setting of the biblical text. My thesis proposes that the distinct cityscapes in the manuscript represent what architectural historian William MacDonald calls the “urban armatures” of imperial Roman cities. These armatures (thoroughfares, passageways, and civic buildings) are the essential architectural components of imperial urbanism. Transferred onto parchment, the architecture not only guides the viewer’s navigation of the AP illustrations, it also highlights the “dominant images and functional associations” of the signs and spaces of the imperial Roman city. I argue that this juxtaposition between the Old Testament imagery and the material form and look of a city familiar to a contemporary Roman viewer constitutes a pictorial argument for a new Christian Roman culture in the manuscript. My interpretation positions the AP as part of an exegetical strategy, which sought to link the biblical past with the imperial legacy of Rome. In this sense, the AP was an ecclesiastical tool used by Roman popes to assert the Church of Rome as the Universal Christian church, and for Church fathers to reconcile the non-Christian, Roman pagan past with Christian Rome in late antiquity. This is vividly illustrated in the AP, where the past represented by the Old Testament is incorporated into the general history of the Roman Empire through the presence of the imperial cityscapes. The resulting effect is a powerful visual expression of Rome’s ordained role as the inheritor of the Christian tradition.
On the Lelong-Demailly numbers of plurisubharmonic currents
Creators: name: Ghiloufi, Noureddine
Publisher: name: arXiv
Year: 2011
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: In this note we study the existence of the Lelong-Demailly number of a negative plurisubharmonic current with respect to a positive plurisubharmonic function on an open subset of $\C^n$. Then we establish some estimates of the Lelong-Demailly numbers of positive or negative plurisubharmonic currents.
Deliverable 4.3. Integration with the electrical system
Creators: name: Monclús, Mikel
name: Sánchez, Sergio
name: Morató, Moisès
Publisher: name: Zenodo
Year: 2017
Subjects: electrical grid
smart energy systems
energy storage
scenarios

description: The CHESS SETUP concept aims to achieve an energy efficient system to supply heating and hot water in buildings mainly from renewable sources. The proposed system is based on the optimal combination of solar energy production, heat storage and heat pump use. What this means is that the proposed system will provide flexibility on the energy demand side, balancing fluctuations in demand profiles where possible, and will therefore also have an impact in the electrical grid. In this study, different scenarios will be developed for Corby’s pilot electric grid and at a larger scale for both countries participating with pilot projects (Spain and the UK) to analyse the impact of a major implementation of the system and how can it boost the implantation of new renewable installations (solar photovoltaic and wind power). The focus will be on the residential sector, starting with Corby’s pilot and using the same methodology for Spanish and British electrical grids. A typical summer and winter day will be examined for all scenarios to understand the impact in these very different circumstances both in terms of energy demand and generation.
A New Population of High Redshift, Dusty Lyman-Alpha Emitters and Blobs Discovered by WISE
Creators: name: Bridge, Carrie R.
name: Blain, Andrew
name: Borys, Colin J. K.
name: Petty, Sara
name: Benford, Dominic
name: Eisenhardt, Peter
name: Farrah, Duncan
name: Griffith, Roger L.
name: Jarrett, Tom
name: Stanford, S. Adam
name: Stern, Daniel
name: Tsai, Chao-Wei
name: Wright, Edward L.
name: Wu, Jingwen
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report a new technique to select 1.610^{13-14}L_sun) and warm colors, typically larger than submillimeter-selected galaxies (SMGs) and dust-obscured galaxies (DOGs). These traits are commonly associated with the dust being energized by intense AGN activity. We hypothesize that the combination of spatially extended Lyman-alpha, large amounts of warm IR-luminous dust, and rarity (implying a short-lived phase) can be explained if the galaxies are undergoing strong `feedback' transforming them from an extreme dusty starburst to a QSO.
description: Submitted to ApJ Letters, 6 pages, 4 figures. Comments welcome
The Zak phase and the existence of edge states in graphene
Creators: name: Delplace, P.
name: Ullmo, D.
name: Montambaux, G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We develop a method to predict the existence of edge states in graphene ribbons for a large class of boundaries. This approach is based on the bulk-edge correspondence between the quantized value of the Zak phase Z(k), which is a Berry phase across an appropriately chosen one-dimensional Brillouin zone, and the existence of a localized state of momentum k at the boundary of the ribbon. This bulk-edge correspondence is rigorously demonstrated for a one dimensional toy model as well as for graphene ribbons with zigzag edges. The range of k for which edge states exist in a graphene ribbon is then calculated for arbitrary orientations of the edges. Finally, we show that the introduction of an anisotropy leads to a topological transition in terms of the Zak phase, which modifies the localization properties at the edges. Our approach gives a new geometrical understanding of edge states, it confirms and generalizes the results of several previous works.
description: 14 pages, 19 figures
Diffuse Lyman Alpha Haloes around Lyman Alpha Emitters at z=3: Do Dark Matter Distributions Determine the Lyman Alpha Spatial Extents?
Creators: name: Matsuda, Y.
name: Yamada, T.
name: Hayashino, T.
name: Yamauchi, R.
name: Nakamura, Y.
name: Morimoto, N.
name: Ouchi, M.
name: Ono, Y.
name: Umemura, M.
name: Mori, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Using stacks of Ly-a images of 2128 Ly-a emitters (LAEs) and 24 protocluster UV-selected galaxies (LBGs) at z=3.1, we examine the surface brightness profiles of Ly-a haloes around high-z galaxies as a function of environment and UV luminosity. We find that the slopes of the Ly-a radial profiles become flatter as the Mpc-scale LAE surface densities increase, but they are almost independent of the central UV luminosities. The characteristic exponential scale lengths of the Ly-a haloes appear to be proportional to the square of the LAE surface densities (r(Lya) \propto Sigma(LAE)^2). Including the diffuse, extended Ly-a haloes, the rest-frame Ly-a equivalent width of the LAEs in the densest regions approaches EW_0(Lya) ~ 200 A, the maximum value expected for young (< 10^7 yr) galaxies. This suggests that Ly-a photons formed via shock compression by gas outflows or cooling radiation by gravitational gas inflows may partly contribute to illuminate the Ly-a haloes; however, most of their Ly-a luminosity can be explained by photo-ionisation by ionising photons or scattering of Ly-a photons produced in HII regions in and around the central galaxies. Regardless of the source of Ly-a photons, if the Ly-a haloes trace the overall gaseous structure following the dark matter distributions, it is not surprising that the Ly-a spatial extents depend more strongly on the surrounding Mpc-scale environment than on the activities of the central galaxies.
description: 7 pages, 4 figures, accepted for publication in MNRAS
title: Charakterisierung integriert-optischer Silizium-Wellenleiter
title: Characterizing integrated silicon waveguides
titleType: AlternativeTitle
Creators: name: Müller, Jost
Publisher: name: TUHH Universitätsbibliothek
Year: 2013
Subjects: subject: OFDR
subject: SOI
subject: Silicon
subject: Silicon Photonics
subject: Raman
subject: Integrated Optics
subject: Silizium
subject: Wellenleiter
subject: Optik
subject: Kommunikationstechnik
subject: Messtechnik
subject: Integrierte Optik
subject: Photonik
subject: Reflektometrie
subject: Raman-Effekt

description: Diese Arbeit beschreibt Messtechniken zur Charakterisierung integriert-optischer Wellenleitersysteme auf Basis der SOI-Technologie. Hierbei lag der Schwerpunkt auf der Bestimmung der Wellenleiterdämpfung sowie der Lebensdauer freier Ladungsträger. Neben einem neuartigen Verfahren zur räumlich aufgelösten Bestimmung der Wellenleiterverluste mittels optischer Frequenzbereichsreflektometrie (OFDR) wird ein experimenteller Nachweis über das nichtreziproke Verhalten der Raman-Streuung in Siliziumwellenleitern gezeigt. Weiterhin wird ein DUV-Lithografieverfahren zur Herstellung periodischer Strukturen in Fotolacken auf Siliziumsubstraten vorgestellt, das auf der Verwendung von Beugungsgittern basiert.
description: In this work, measurement techniques for the characterization of integrated optical waveguides based on the SOI-technology are presented. Silicon nanophotonic waveguides are investigated regarding their linear waveguide losses as well as the lifetime of free charge carriers. A novel measurement technique based on optical frequency-domain reflectometry (OFDR) for the evaluation of the longitudinal attenuation profile of silicon waveguides is introduced. The non-reciprocal behaviour of Raman scattering in silicon waveguides is experimentally shown. Furthermore, a technique for the implementation of periodically structured photoresists on silicon substrates based on DUV-lithography with diffraction gratings is demonstrated.
PIFSC report on the American Samoa limited-access longline fishery from 1 January to 30 June 2013
Creators: name: Pacific Islands Fisheries Science Center (U.S.). Fisheries Research And Monitoring Division.
Publisher: name: U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Pacific Islands Fisheries Science Center.
Year: 2016
Subjects: subject: Longlining (Fisheries)--Catch effort--American Samoa--Observations.

description: The following tables represent effort, retained catch (kept) and discards as reported on longline logsheets for the American Samoa limited-access longline fishery. Effort and catch-effort statistics are based on date of longline haul. Effort and catch statistics are based on logbook data submitted to the PIFSC, FRMD and represent an Oracle table LLDS_REPORT_STATS_AS database extraction done on 29 February 2016. When a statistic (number of vessels, trips) can involve dates of haul in 2 summary periods (i.e. years, semi-annual, quarters) the item is counted in both summary periods. Thus, a trip total is for 'partial and completed' trips. As such, these statistics are not additive (i.e. sum of 4 quarters is not the total for the year, etc).
Calcitriol Increases Ceramide, Diacylglycerol, and Expression of Genes Involved in Lipid Packaging in Skeletal Muscle
Creators: name: Jefferson, Grace Elizabeth
Publisher: name: University of Kentucky
Year: 2016
Subjects: subject: Cellular and Molecular Physiology
subject: Exercise Physiology
subject: Laboratory and Basic Science Research

description: Background: Vitamin D is crucial for skeletal muscle function. 25-hidroxyvitamin D (25(OH)D) has been correlated with skeletal muscle mass and intramyocellular lipid (IMCL) content. The purpose of this study was to understand how calcitriol, the active vitamin D metabolite, directly affects myocellular size and lipid partitioning.  Methods: C2C12 myotubes were treated with calcitriol (100nM) or vehicle control for 24 or 96 h. Myotube diameter and protein synthesis rate were measured to determine effects of calcitriol on myocellular size. Intramyocellular triacylglycerol (IMTG), diacylglycerol (DAG), and ceramide content were measured by LC/MS. Expression of genes involved in lipid packaging and lipolysis were measured by RT-PCR. Insulin-stimulated phosphorylated Akt (Thr 308) was determined by western blot.  Results: Calcitriol did not affect myocellular size or protein synthesis rate. Calcitriol increased total DAG and ceramides in a sub-species specific manner. Calcitriol increased IMTG area, but did not affect total IMTG content. Calcitriol reduced mRNA content of diglyceride acyltransferase and increased mRNA content of lipid packaging genes. Calcitriol did not negatively affect insulin-stimulated pAkt.  Conclusions: These results suggest calcitriol directly alters lipid content and packaging in skeletal muscle cells. Altering the expression of lipid packaging genes and increasing IMCL subspecies content may be mechanisms by which vitamin D improves skeletal muscle function in vivo.
Strain-gauge-based measurements of ice loads on ships
Creators: name: Zorn, Till
Publisher: name: TUHH Universitätsbibliothek
Year: 2018
Subjects: subject: strain-gauge-based measurements
subject: ice loads
classificationCode: 620
subject: Ingenieurwissenschaften

description: Design loads are a central element of ship construction, because they influence plate and frame thickness. For the construction of ships that are destined to navigate in cold areas, it is extremely important to take into account the loads of ice impacts and their location on the hull. But ice is a particularly inconsistent material. To measure ice-induced loads, a lot of measurement has been undertaken, many of them used strain gauges. However, long-term strain gauge measurements are rare. In this bachelor’s thesis the state-of-the-art strain-gauge measurements are to be reviewed and problems with strain-gauge measurements will be discussed. Suggestions for improvement on problems like long cable complexity, big measurement setup, complicated installation, external power supply and long-term maintenance by humans while measuring will also be submitted. Therefore, different systems and measurement possibilities should be compared in the context of long-term strain gauge measurements. A feasible solution for the mentioned problems, but also to identify the location and force of ice impact, will be designed.
Supplementary Material - AGILE2023 Short Paper
Creators: name: Hüffer, Phil
name: Degbelo, Auriol
name: Koukouraki, Eftychia
Publisher: name: figshare
Year: 2023
Subjects: Human-computer interaction
Information retrieval and web search

description: Supplementary material for the paper on Designing Search Engines for Interactive Web-based Geovisualizations
Categorical Perception of Species in Infancy
Creators: name: White, Hannah B.
Publisher: name: University of Kentucky
Year: 2016
Subjects: subject: Developmental Psychology

description: Although there is a wealth of knowledge on categorization in infancy, there are still many unanswered questions about the nature of category representation in infancy. For example, it is yet unclear whether categories in infancy have well-defined boundaries or what knowledge about species categories young infants have before entering the lab. Using a morphing technique, we linearly altered the proportion of cat versus dog in images and observed how infants reacted to contrasts between pairs of images that either did or did not cross over the categorical boundary. This was done while equating between-category and within-category similarity. Results indicate that infants’ pre-existing categories of cats and dogs are discrete and mutually exclusive. Experiment 2 found that inversion caused a disruption in processing by 6.5- but not 3.5- month-old infants, indicating a developmental change in category representation. These findings demonstrate a propensity to dichotomize early in life that could have implications for social categorizations, such as race and gender. Furthermore, this work extends previous knowledge of infant categorical perception by demonstrating a priori knowledge of familiar species categories and the boundaries between them.
Comparison of the performance of kindergarten and non-kindergarten children on selected pre-reading tests
Creators: name: Piwowar, Deanna Gaye
Publisher: name: University of Calgary
Year: 1969
Subjects: subject: LB 1139 R4 P58 1969 Microfilm
subject: Reading - Ability testing
subject: Kindergarten

description: Bibliography: p. 103-109.
Relationship of teacher attitude to a social studies unit and pupil progress in critical thinking
Creators: name: Puetz, Darlene Catharine
Publisher: name: University of Calgary
Year: 1969
Subjects: subject: LB 1084 P82 1969 Microfilm
subject: Teachers - Attitudes
subject: Social sciences - Study and teaching
subject: Consumer education - Study and teaching

description: Bibliography: p. 32-35.
Supplementary Information from Seasonal shifts in the competitive ability of macroalgae influence the outcomes of coral–algal competition
Creators: name: Brown, Kristen T.
name: Bender-Champ, Dorothea
name: Hoegh-Guldberg, Ove
name: Dove, Sophie
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Ecology
subject: FOS: Biological sciences

description: Understanding the effects of natural processes on coral–algal competition is an important step in identifying the role of macroalgae in perturbed coral reef ecosystems. However, studies investigating coral–algal interactions are often conducted in response to a disturbance, and rarely incorporate seasonal variability. Here, naturally occurring coral–algal interactions were assessed in situ four times a year over 2 years across eight sites spanning diverse benthic communities. In over 6500 recorded coral–algal interactions, cyanobacteria and turf algae were found to be the most damaging regardless of season, resulting in visible damage to coral in greater than 95% of interactions. Macroalgae that primarily compete using chemical mechanisms were found to be more damaging than those that compete using physical mechanisms (e.g. abrasion), with both groups demonstrating decreased competitive ability in summer. While crustose coralline algae were the least damaging to competing coral, during summer, it became three times more competitive. Our results demonstrate that the competitive ability of macroalgae and the outcomes of coral–algal competition can fluctuate in seasonal cycles that may be related to biomass, production of chemical defences and/or physical toughness. The results of this study have important implications for understanding the trajectory and resilience of coral reef ecosystems into the future.
The third type of fermion mixing in the lepton and quark interactions with leptoquarks
Creators: name: Kuznetsov, A. V.
name: Mikheev, N. V.
name: Serghienko, A. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The low-energy manifestations of a minimal extension of the electroweak standard model based on the quark-lepton symmetry $SU(4)_V \otimes SU(2)_L \otimes G_R$ of the Pati--Salam type are analyzed. Given this symmetry the third type of mixing in the interactions of the $SU(4)_V$ leptoquarks with quarks and leptons is shown to be required. An additional arbitrariness of the mixing parameters could allow, in principle, to decrease noticeably the lower bound on the vector leptoquark mass originated from the low-energy rare processes, strongly suppressed in the standard model.
description: 19 pages, LaTeX, 3 EPS figures, submitted to Int. J. Mod. Phys. A; version 2: typos corrected, references added, presentation improved, the version to be published
Thermoregulation in the leatherback sea turtle (Dermochelys coriacea)
Creators: name: Bostrom, Brian Lee
Publisher: name: University of British Columbia
Year: 2009

description: Adult leatherback turtles (Dermochelys coriacea) exhibit thermal gradients between their bodies and the environment of ≥ 8 °C in sub-polar waters and ≤ 4 °C in the tropics. There has been no direct evidence for thermoregulation in leatherbacks although modelling and morphological studies have given an indication of how thermoregulation may be achieved. Using a cylindrical model of a leatherback I investigated the extent to which heat production by muscle activity during variation of swim speed could be used in a leatherback’s thermal strategy. Drag force of a full scale cast of a leatherback was measured in a low velocity wind tunnel to obtain an estimate of the metabolic cost needed to offset drag. It is apparent, from this modelling, that heat flux from the body and flippers, activity and body and water temperatures are important variables to measure in order to fully classify the thermoregulatory response of live leatherbacks. Using captive juvenile leatherbacks of 16 and 37 kg I show for the first time that leatherbacks are indeed capable of thermoregulation. In cold water (< 25 °C), flipper stroke frequency increased, heat loss through the plastron, carapace and flippers was minimized, and a positive thermal gradient of up to 2.3 °C was maintained between body and environment. In warm water (25 – 31 °C), turtles were inactive and heat loss through their plastron, carapace and flippers increased, minimizing the thermal gradient (0.5 °C). In juvenile leatherbacks, heat gain is controlled behaviourally through activity while heat flux is regulated physiologically, presumably by regulation of blood flow distribution. Using a scaling model, I show that a 300 kg adult leatherback is able to maintain a maximum thermal gradient of 18.2 °C in cold sub-polar waters. Thus, by employing both physiological and behavioural mechanisms, adult leatherbacks are able to keep warm while foraging in cold sub-polar waters and to prevent overheating in a tropical environment, greatly expanding their range relative to other marine turtles.
Der Windkanal des Instituts für Schiffbau der Universität Hamburg
Creators: name: Wieghardt, Karl
Publisher: name: TUHH Universitätsbibliothek
Year: 1955
Subjects: classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: Der Windkanal des Instituts für Schiffbau der Universität Hamburg
THE ISSUE OF THE TRAGEDY OF THE ERA IN THE STORY "POMEGRANATE" BY ABDULLA QAHHOR
Creators: name: Aliyev, Azam
Publisher: name: Zenodo
Year: 2023

description: Abdulla Qahhor's story "Pomegranate" is a work that expresses the tragedy of the social and ideological period of the last century. Various flaws in human nature are criticized in the story.
Die Berechnung hydroelastischer Stöße
Creators: name: Meyerhoff, Wibo Kay
Publisher: name: TUHH Universitätsbibliothek
Year: 1965
Subjects: classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: Die Berechnung hydroelastischer Stöße
Pairing and the Cooling of Neutron Stars
Creators: name: Page, Dany
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this review, I present a brief summary of the impact of nucleon pairing at supra-nuclear densities on the cooling of neutron stars. I also describe how the recent observation of the cooling of the neutron star in the supernova remnant Cassiopeia A may provide us with the first direct evidence for the occurrence of such pairing. It also implies a size of the neutron 3P-F2 energy gap of the order of 0.1 MeV.
description: Contributed chapter in "50 Years of Nuclear BCS", edited by R. A. Broglia and V. Zelevinsky
Selectivity of cyclodextrins as a parameter to tune the formation of pseudorotaxanes and micelles supramolecular assemblies. A systematic SANS study
Creators: name: Lazzara, G.
name: Prevost, S.
name: Gradzielski, Michael
Publisher: name: Technische Universität Berlin
Year: 2011
Subjects: subject: 530 Physik

description: Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
description: This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
description: We studied the formation of polypseudorotaxanes formed with cyclodextrins (CDs) threading a copolymer chain that forms self-assembled structures in water. The size of the CD cavity was chosen such that it is block selective with respect to the formation of inclusion complexes and therefore in terms of altering the structure of the copolymer self-assemblies in a systematic fashion. Small angle neutron scattering (SANS) experiments provide a direct and clear picture of the shape and interactions of the copolymer micelles in the absence and the presence of various CDs. Moreover, the dissolution of copolymer micelles by CD addition was clearly described by a simple model which provides a tool for quantitative predictions. This study suggests the possibility of designing materials with tunable aggregation abilities in water, where the extent of aggregate formation is determined by the amount and type of added cyclodextrin.
Linear Data Structures For Storage Allocation In Attribute Evaluators
Creators: name: Sluiman, F. J.
Publisher: name: Zenodo
Year: 2002
Subjects: computer science
attribute grammars
data structures
storage allocation

description: Practical and theoretical results have been found concerning the use of global storage allocation for the instances of applied occurrences of an attribute.

The practical results focus on the necessary and sufficient conditions to decide at evaluator construction time whether an evaluator can allocate the instances of an applied occurrence to a number of global variables, stacks and queues. Checking these conditions takes polynomial time for a simple multi-visit evaluator and exponential time for an absolutely non-circular evaluator.

The theoretical results are concerned with the data structures that are required for the global storage allocation of the instances of applied occurrences in simple multi-X evaluators, where X ∈ { pass, sweep, visit }. For this purpose, the general class of basic linear data structures is introduced. This class of data structures can also be used to explore the theoretical possibilities and limitations of storage allocation techniques in domains other than attribute grammars.
description: A Dissertation Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy at the University of Twente.
Enhancing SAR Based Oil Spill Detection with GAN Driven Data Augmentation
Creators: name: Scilla, Dario
Publisher: name: KAUST Research Repository
Year: 2025

description: Oil spill detection is crucial for environmental monitoring due to its severe ecological and economic impact. Synthetic Aperture Radar (SAR) imagery is widely used for this task, as oil spills appear smoother than the surrounding ocean. However, accurate detection remains challenging due to the similarity between oil spills and natural phenomena, such as low wind zones or biogenic films. Additionally, the scarcity of publicly available SAR datasets limits the effectiveness of deep learning models.

To address data scarcity, we employ a GAN-based model to generate synthetic SAR oil spill patches using only 17 real SAR image patcehs. GANs, through adversarial training, produce high-quality synthetic images that enhance dataset diversity. However, the generated masks often contain noise, which we mitigate using computer vision techniques to refine binary masks by filtering out artifacts and outliers.

The final synthetic dataset consists of approximately 2,000 image-mask pairs, used to train deep learning segmentation models, including DeepLabV3+ and U-Net++. Despite being trained solely on synthetic data, these models achieve a mean Intersection over Union (mIoU) of ~0.9 on real Sentinel-1 SAR images, demonstrating strong generalization capabilities.

Our results highlight the potential of GANs for data augmentation, expanding limited datasets and improving oil spill detection in SAR imagery. This approach provides a promising solution for training deep learning models in data-scarce scenarios.
Ermittlung der Kentersicherheit lecker Schiffe im Seegang aus Bewegungssimulationen
Creators: name: Mello Petey, Fernando de
Publisher: name: TUHH Universitätsbibliothek
Year: 1988
Subjects: classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: Ermittlung der Kentersicherheit lecker Schiffe im Seegang aus Bewegungssimulation Es wird eine Berechnungsmethode vorgestellt, mit der die Rollbewegung eines leckgeschlagenen Schiffes in natürlichem Seegang simuliert und die Wahrscheinlichkeit des Kenterns während einer gegebenen Zeit bestimmt werden kann. Die FlÜssigkeitsbewegung in Tanks und Leckräumen muß mit simuliert werden. Die mittlere Fahrgeschwindigkeit und der mittlere Kurswinkel werden während der Simulation konstant angesetzt. Durch den Seegang schwanken aber Geschwindigkeit und Kurs, und das Schiff macht Tauch-, Stampf- und Querbewegungen. Die Tauch-, Stampf-, Quer- und Gierbewegung werden nur linearisiert, aber unter Ansatz hydrostatischer und hydrodynamischer Kräfte erfaßt. Nichtlineare Koppluugen zwischen Roll- und Längsbewegung werden berücksichtigt. Der stationäre, kurzkämmige Seegang wird aus einem vorgegebenen Spektrum als Uberlagerung vieler regelmäßiger Wellen Init verschiedener Frequenz und Laufrichtung dargestellt. Für die Berechnung der aufrichtenden Hebelarme im Seegang wird das Grimsche Konzept der effektiven Welle angewendet. Die Position des Schiffes wird in kleinen Zeitabständen bestimmt. Für jeden Zeitschritt werden die Kräfte und Momente, die die bewegte Flüssigkeit innerhalb von Tanks und Leckräumen auf das Schiff ausübt, zu denen infolge äußerer Einflüße wie Wellen, Wind etc. addiert, so daß eine Lösung sowohl fÜr die Schiffsbewegung wie auch für die Flüssigkeitsbewegung in den Räumen (unter Berücksichtigung des Zu- und Abflusses von Leckwasser durch vorhandene Öffnungen in der Schiffsaußenhaut gefunden wird. An einem Beispielschiff werden dann die Kriterien der Bauvorschrift 1033 der Bundesmarine fÜür die Beurteilung der Lecksicherheit von Uberwasserschiffen, bei denen der Seegang nur pauschal berücksichtigt wird, überprüft.
Preferences in the spectrum of electronically reproduced sound, as expressed by learners in grades I to XII
Creators: name: Van De Geer, Gerrit Dirk
Publisher: name: University of Calgary
Year: 1969
Subjects: subject: QP 461 V33 1969 Microfilm
subject: Hearing
subject: Sound - Psychological aspects

description: Bibliography: p. 115-117.
description: The primary focus in this exploratory study was directed at the frequency range students in school grades prefer when they are listening to speech or music being reproduced through electronic reproduction devices. Two hundred forty students from grades one to twelve were encouraged to select volume, bass, and treble settings while listening to (1) speech and (2) music when (1) volume was given and when (2) volume was free. Ten sets of data were recorded for each child and ten null hypotheses were formulated, stating that no differences exist between grades and within grades, in preferred settings. The four treatments were administered in empty classÂ­rooms in three schools. The children selected preferred settings of volume, bass, and treble by manipulating knobs on an electronic sound reproduction device. The first and third treatments were administered while the subject listened to a selection from Winnie-the-Pooh. The second and fourth treatments were administered while the subject listened to the theme of the television program Bonanza. To test the Null hypotheses, aô€ ³ VI Anova 3-factor experiment with repeated measures was used for between-group analysis; a 4-way factorial design was used for within­group analysis. The results show that there is no difference between grades in the selected frequency ranges for speech. However, there is a difference between grades for music. Within grades there are differences in both the selected settings for speech and music.
Optimierungscompiler und Formberechnungsverfahren : Entwicklung und Anwendung im Vorentwurf von RO/RO-Schiffen
Creators: name: Gudenschwager, Hans
Publisher: name: TUHH Universitätsbibliothek
Year: 1988
Subjects: classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: Optimierungscompiler und Formberechnungsverfahren: Entwicklung und Anwendung im Vorentwurf von RO/RO-Schiffen In dieser Arbeit wird ein komplettes Entwurfssystem für einen Typ von RO/RO-Schiffen vorgestellt, das mit dem DELPHI-Optimierungspaket arbeitet. Die Schiffsform wird darin nach einer in der Arbeit ebenfalls beschriebenen Methode berücksichtigt. An Hand dieses Entwurfsystems wird auch gezeigt, auf welche Weise es möglich ist, nichtstetige Funktionsverläufe,wie z.B. die sich sprunghaft ändernden Hauptabmessungen, mit dem DELPHI-Optimierung5paket zu bearbeiten. Beispielrechnungen mit diesem Entwurfssystem. Es wird an Hand zweier verschiedener Schiffsformen die Auswirkung von Variationen der Eingabedaten auf zwei verschiedene Gütekriterien - nämlich das für die Werft wichtige Kriterium des Baupreises und das für die Reederei wichtige Kriterium der Mindestfrachtrate - gezeigt.
Study of the vascularization and innervation of the hypophysis of the Brook Trout, Salvelinus fontinalis (Mitchill)
Creators: name: Jensen, Joanna Maria
Publisher: name: University of Calgary
Year: 1966
Subjects: subject: QL 639.1 J64 1966
subject: Fishes - Physiology
subject: Pituitary body
subject: Brook trout

description: Bibliography: p. 42-44.
Deliverable 4.2. Management Tool Report
Creators: name: Ferrer, Jordi
name: Fàbrega, David
name: Mir, Jordi
name: Sánchez, Sergio
name: Garcia, Susanna
Publisher: name: Zenodo
Year: 2019
Subjects: management tool
user interface

description: This report provides a Tool for managing the technical and economic operation of the system. The monitoring and visualization is a very important component of any system since what is not measured and monitored cannot be managed and improved. This report (D4.2) describes the implemented monitoring and control architecture for the CHESS SETUP and it can be treated as the CMS (Control and Monitoring System) User’s Manual of the HMI (Human Machine Interface) for the system operators and administrators. Chapter 2 describes the eventual implemented hardware and software control and monitoring architecture. Chapter 3, describe the manual for the user interface for all the tasks of system visualization and operation, plotting and data export. The system provides a synoptic end-user simple and friendly view for non-advanced users and, at the same time, highly descriptive and tuneable screens for adjusting all the parameters involved in the system operation. Finally, in chapter 4, the low-level raw database is described to allow expert users obtain raw data from sensors and actuators, and high-level information calculated by the CMS from the low-level data such as performances or energy savings that will help the operators in the system follow up.
The Role of Digital Storytelling in Educational Uses When Staging Shakespeare: a Case Study of a Lecture Performance – Gamlet (Hamlet)
Creators: name: Bjelica, Petra
Publisher: name: Skenè. Journal of Theatre and Drama Studies
Year: 2023

description: This paper investigates the utilisation of digital storytelling in theatre, specifically focusing on its application in staging and adapting Shakespearean plays. By examining the definitions of digital storytelling and lecture performance, the paper explores how an autobiographical approach present in both these genres, can be relevant in today’s educational contexts and remediation of Shakespeare’s works through digitally mediated narratives. The analysis of a lecture performance called Gamlet (a Russian name for Hamlet), that incorporates elements of digital storytelling, illustrates their various applications in theatre. Furthermore, the paper presents arguments that can serve as guiding principles for future student work in this field that might enhance the critical abilities and enrich the sense of self of these students, as it constitutes an educational model that goes against the commodification of knowledge. Keywords: digital storytelling; lecture performance; Shakespeare; Hamlet; Shakespeare in education
description: Skenè. Journal of Theatre and Drama Studies, Vol. 9 No. 1 (2023): Performing the Book of Esther in Early Modern Europe
Automatic liver tumor segmentation on computed tomography for patient treatment planning and monitoring
Creators: name: Moghbel, Mehrdad
name: Mashohor, Syamsiah
name: Mahmud, Rozi
name: Saripan, M. Iqbal Bin
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2016
Subjects: image segmentation
random walker segmentation
CT imaging
liver tumor burden
fuzzy c-means
cuckoo search optimization

description: Segmentation of liver tumors from Computed Tomography (CT) and tumor burden analysis play an important role in the choice of therapeutic strategies for liver diseases and treatment monitoring. In this paper, a new segmentation method for liver tumors from contrast-enhanced CT imaging is proposed. As manual segmentation of tumors for liver treatment planning is both labor intensive and time-consuming, a highly accurate automatic tumor segmentation is desired. The proposed framework is fully automatic requiring no user interaction. The proposed segmentation evaluated on real-world clinical data from patients is based on a hybrid method integrating cuckoo optimization and fuzzy c-means algorithm with random walkers algorithm. The accuracy of the proposed method was validated using a clinical liver dataset containing one of the highest numbers of tumors utilized for liver tumor segmentation containing 127 tumors in total with further validation of the results by a consultant radiologist. The proposed method was able to achieve one of the highest accuracies reported in the literature for liver tumor segmentation compared to other segmentation methods with a mean overlap error of 22.78 % and dice similarity coefficient of 0.75 in 3Dircadb dataset and a mean overlap error of 15.61 % and dice similarity coefficient of 0.81 in MIDAS dataset. The proposed method was able to outperform most other tumor segmentation methods reported in the literature while representing an overlap error improvement of 6 % compared to one of the best performing automatic methods in the literature. The proposed framework was able to provide consistently accurate results considering the number of tumors and the variations in tumor contrast enhancements and tumor appearances while the tumor burden was estimated with a mean error of 0.84 % in 3Dircadb dataset.
description: EXCLI Journal; 15:Doc406; ISSN 1611-2156
Spatiotemporal analysis of wireless internet of things networks
Creators: name: Emara, Mustafa
Publisher: name: TUHH Universitätsbibliothek
Year: 2021
Subjects: subject: Internet of Things
subject: Wireless communication
subject: queueing theory
subject: stochastic geometry
subject: 5G mobile systems
classificationCode: 600
subject: Technik
classificationCode: 620
subject: Ingenieurwissenschaften

description: Diese Arbeit modelliert und analysiert großflächige “Internet of things” Drahtlosnetzwerke bezüglich ihrer Kommunikationsfähigkeit und dem verteilten Rechnen. Um die Kommunikationsfähigkeit zu evaluieren entwickelt diese Arbeit klar definierte Bedingungen für verschiedene Datenmodelle aus einer raumzeitlichen Perspektive. Um eine schnelle und effiziente Auslagerung von Berechnung zu ermöglichen wird Multi-Access-Edge-Computing an den Basisstationen verwendet. Eine Latenzreduzierungen wird in verschiedenen Anwendungsfällen aus der Automobil- und Automatisierungsindustrie demonstriert. Aufgrund der in dieser Arbeit erarbeiteten Ergebnisse ist ein raumzeitlicher Evaluierung der Leistung zukünftiger drahtloser Netzwerke möglich.
description: This thesis models and analyzes large scale wireless internet of things networks from the communication and computation perspectives. For the communication aspect, this thesis develops rigorous frameworks for different traffic models from a spatiotemporal viewpoint. For the computation aspect, this thesis utilizes multi-access edge computing to enable efficient and faster offloaded task execution at the serving base stations. Latency reduction gains are demonstrated through different use-cases within the automotive and the industrial vertical segments. Owing to the reported results throughout this thesis, a spatiotemporal insight on the performance of future wireless networks is feasible.
Coulomb gap triptych in a periodic array of metal nanocrystals
Creators: name: Chen, Tianran
name: Skinner, Brian
name: Shklovskii, B. I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The Coulomb gap in the single particle density of states (DOS) is a universal consequence of electron-electron interaction in disordered systems with localized electron states. Here we show that in arrays of monodisperse metallic nanocrystals, there is not one but three identical adjacent Coulomb gaps, which together form a structure that we call a "Coulomb gap triptych." We calculate the DOS and the conductivity in two- and three-dimensional arrays using a computer simulation. Unlike in the conventional Coulomb glass models, in nanocrystal arrays the DOS has a fixed width in the limit of large disorder. The Coulomb gap triptych can be studied via tunneling experiments.
description: 4+ pages, 3 figures
Stateless Quantum Structures and Extremal Graph Theory
Creators: name: Voracek, Vaclav
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: We study hypergraphs which represent finite quantum event structures. We contribute to results of graph theory, regarding bounds on the number of edges, given the number of vertices. We develop a missing one for 3-graphs of girth 4. As an application of the graph-theoretical approach to quantum structures, we show that the smallest orthoalgebra with an empty state space has 10 atoms. Optimized constructions of an orthomodular poset and an orthomodular lattice with no group-valued measures are given. We present also a handcrafted construction of an orthoalgebra with no group-valued measure; it is larger, but its properties can be verified without a computer
description: reports on mathematical physics, 2020