cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Energy Distribution of Nanoflares in Three-Dimensional Simulations of Coronal Heating
Creators: name: Ng, C. S.
name: Lin, L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Computational Physics (physics.comp-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: In a recent computational campaign [Ng et al., Astrophys. J. 747, 109, 2012] to investigate a three-dimensional model of coronal heating using reduced magnetohydrodynamics (RMHD), we have obtained scaling results of heating rate versus Lundquist number based on a series of runs in which random photospheric motions are imposed for hundreds to thousands of Alfvén time in order to obtain converged statistical values. Using this collection of numerical data, we have performed additional statistical analysis related to the formation of current sheets and heating events, or nanoflares [Parker, Astrophys. J. 330, 474, 1988]. While there have been many observations of the energy distribution of solar flares, there have not been many results based on large-scale three-dimensional direct simulations due to obvious numerical difficulties. We will present energy distributions and other statistics based on our simulations, calculated using a method employed in [Dmitruk & Gómez, Astrophys. J., 484, L83, 1997]. We will also make comparisons of our results with observations.
description: 11th Annual International Astrophysics Conference; submitted to AIPCP
Comparative Analysis of Congestion Control Algorithms Using ns-2
Creators: name: Patel, Sanjeev
name: Gupta, P. K.
name: Garg, Arjun
name: Mehrotra, Prateek
name: Chhabra, Manish
Publisher: name: arXiv
Year: 2012
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In order to curtail the escalating packet loss rates caused by an exponential increase in network traffic, active queue management techniques such as Random Early Detection (RED) have come into picture. Flow Random Early Drop (FRED) keeps state based on instantaneous queue occupancy of a given flow. FRED protects fragile flows by deterministically accepting flows from low bandwidth connections and fixes several shortcomings of RED by computing queue length during both arrival and departure of the packet. Stochastic Fair Queuing (SFQ) ensures fair access to network resources and prevents a busty flow from consuming more than its fair share. In case of (Random Exponential Marking) REM, the key idea is to decouple congestion measure from performance measure (loss, queue length or delay). Stabilized RED (SRED) is another approach of detecting nonresponsive flows. In this paper, we have shown a comparative analysis of throughput, delay and queue length for the various congestion control algorithms RED, SFQ and REM. We also included the comparative analysis of loss rate having different bandwidth for these algorithms.
Report from the Evolving Open Solutions (2) Workgroup
Creators: name: Billings, Marilyn
name: Bobley, Brett
name: McCollough, Aaron
name: Mudditt, Alison
name: Naim, Kamran
name: Pinter, Frances
name: Price, Richard
name: Roche, Tony
name: Sprio, Lisa
name: Vandegrift, Micah
Publisher: name: Open Scholarship Initiative Proceedings
Year: 2016

description: Are the scholarly publishing tools weâ€™re using today still the right ones? Is the monograph still the best format in the humanities? Is the journal article still best in STM? These products can be difficult to produce and edit, nearly impenetrable to read, andâ€”as in the case of clinical research informationâ€”they arenâ€™t necessarily the best-suited formats for capturing every piece of necessary information (like protocols and datasets in medical research) and showing how this information is all connected to other scholarship. What other formats and options are being considered or used? What are the prospects of change? How about the stakeholder universe itself? How are roles, responsibilities and expectations changing (and where might they end up)? Are we â€œsettlingâ€ on half-measures or on the best possible solutions?
description: Open Scholarship Initiative Proceedings, 2016
Physiology and metabolism of imbibed, and dessicated-rehydrated oat grain during germination and growth
Creators: name: Akalehiywot, Teshome
Publisher: name: University of Calgary
Year: 1979
Subjects: subject: SB 191 O2 1979 Fiche
subject: Oats
subject: Germination

description: Bibliography: p. 215-225.
VLBI for Gravity Probe B. VI. The Orbit of IM Pegasi and the Location of the Source of Radio Emission
Creators: name: Ransom, R. R.
name: Bartel, N.
name: Bietenholz, M. F.
name: Lebach, D. E.
name: Lestrade, J. -F.
name: Ratner, M. I.
name: Shapiro, I. I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a physical interpretation for the locations of the sources of radio emission in IM Pegasi (IM Peg, HR 8703), the guide star for the NASA/Stanford relativity mission Gravity Probe B. This emission is seen in each of our 35 epochs of 8.4-GHz VLBI observations taken from 1997 to 2005. We found that the mean position of the radio emission is at or near the projected center of the primary to within about 27% of its radius, identifying this active star as the radio emitter. The positions of the radio brightness peaks are scattered across the disk of the primary and slightly beyond, preferentially along an axis with position angle, p.a. = (-38 +- 8) deg, which is closely aligned with the sky projections of the orbit normal (p.a. = -49.5 +- 8.6 deg) and the expected spin axis of the primary. Comparison with simulations suggests that brightness peaks are 3.6 (+0.4,-0.7) times more likely to occur (per unit surface area) near the pole regions of the primary (|latitude| >= 70 deg) than near the equator (|latitude| <= 20 deg), and to also occur close to the surface with ~2/3 of them at altitudes not higher than 25% of the radius of the primary.
description: Accepted for publication in the Astrophysical Journal Supplement Series
Vergleich verschiedener linearer Algorithmen für Spline-Kurven
Creators: name: Busch, Axel
Publisher: name: TUHH Universitätsbibliothek
Year: 1990
Subjects: classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines

description: Vergleich verschiedener linearer Algorithmen für Spline-Kurven Vergleich verschiedener linearer Algorithmen für Spline-Kurven: Die vorliegende Studienarbeit soll durch emen praktischen Vergleich die Brauchbarkeit verschiedener Spline-Algorithmen untersuchen. Alle hier behandelten Splines sind von nur einem Parameter abhängig, d.h. es sind Kurven, die aber teilweise auch frei im Raum liegen können. Als Maßstab für die Qualität eines Splines werden die folgenden Kriterien berücksichtigt: 1. Die entstehende Kurve soll möglichst glatt sein. 2. Der Rechenaufwand soll gering sein. 3. Der Bedienungsaufwand soll klein sein, d.h. der Spline soll die vorgegebenen Punkte verwirklichen und keine weiteren steuernden Parameter benötigen. Die Flexibilität in speziellen Anwendungen wird nicht untersucht. Je nachdem welche der genannten Kriterien man betont, sind unterschiedliche Spline-Algorithmen zu empfehlen. Ziel ist es, den Spline-Algorithmus zu finden, der alle anfallenden "Punkthaufen" zuverlässig, gut und schnell durch einen interpolierenden Spline verbindet. Spline- Algorithmen, die auf iterativen oder anderen nichtlinearen Verfahren beruhen, werden nicht in diese Betrachtung einbezogen.
Simulation of the Directional Dark Matter Detector (D3) and Directional Neutron Observer (DiNO)
Creators: name: Jaegle, I.
name: Feng, H.
name: Ross, S.
name: Yamaoka, J.
name: Vahsen, S. E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Preliminary simulation and optimization studies of the Directional Dark Matter Detector and the Directional Neutron Observer are presented. These studies show that the neutron interaction with the gas-target in these detectors is treated correctly by GEANT4 and that by lowering the pressure, the sensitivity to low-mass WIMP candidates is increased. The use of negative ion drift might allow us to search the WIMP mass region suggested by the results of the non-directional experiments DAMA/LIBRA, CoGeNT and CRESST-II.
description: Proceedings of the 3rd International conference on Directional Detection of Dark Matter (CYGNUS 2011), Aussois, France, 8-10 June 2011
RVB gauge theory and the Topological degeneracy in the Honeycomb Kitaev model
Creators: name: Mandal, Saptarshi
name: Shankar, R.
name: Baskaran, G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We relate the Z$_2$ gauge theory formalism of the Kitaev model to the SU(2) gauge theory of the resonating valence bond (RVB) physics. Further, we reformulate a known Jordan-Wigner transformation of Kitaev model on a torus in a general way that shows that it can be thought of as a Z$_2$ gauge fixing procedure. The conserved quantities simplify in terms of the gauge invariant Jordan-Wigner fermions, enabling us to construct exact eigen states and calculate physical quantities. We calculate the fermionic spectrum for flux free sector for different gauge field configurations and show that the ground state is four-fold degenerate on a torus in thermodynamic limit. Further on a torus we construct four mutually anti-commuting operators which enable us to prove that all eigenstates of this model are four fold degenerate in thermodynamic limit.
description: 12 pages, 3 figures. Added affiliation and a new section, 'Acknowledgements'.Typos corrected
Clifford Algebras and Euclid's Parameterization of Pythagorean Triples
Creators: name: Kocik, Jerzy
Publisher: name: arXiv
Year: 2012
Subjects: subject: Number Theory (math.NT)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 11A99, 15A66, 11R52, 52C26

description: We show that the space of Euclid's parameters for Pythagorean triples is endowed with a natural symplectic structure and that it emerges as a spinor space of the Clifford algebra $\mathbb{R}_{2,1}$, whose minimal version may be conceptualized as a 4-dimensional real algebra of "kwaternions." We observe that this makes Euclid's parameterization the earliest appearance of the concept of spinors. We present an analogue of the "magic correspondence" for the spinor representation of Minkowski space and show how the Hall matrices fit into the scheme. The latter obtain an interesting and perhaps unexpected geometric meaning as certain symmetries of an Apollonian gasket. An extension to more variables is proposed and explicit formulae for generating all Pythagorean quadruples, hexads, and decuples are provided.
description: 22 pages, 7 figures. The sign convention is fixed, one comment on terminology is added
Metabolism of a desiccation-tolerant and desiccation-sensitive moss during drying and after rehydration: respiration, photosynthesis ATP levels and protein synthesis
Creators: name: Krochko, Joan Elizabeth
Publisher: name: University of Calgary
Year: 1979
Subjects: subject: QK 537 K74 1979 Microfiche
subject: Mosses
subject: Plants - Metabolism

description: Bibliography: p. 153-173.
A graph-based approach to access control migration
Creators: name: Hackelberg, Niklas
Publisher: name: TUHH Universitätsbibliothek
Year: 2018
Subjects: subject: access control
subject: graph theory
subject: access control migration
subject: graph transformation rules
classificationCode: 004
subject: Informatik

description: Der in dieser Arbeit verwendete Ansatz zur Migration der Zugangskontrolle ist die Erstellung eines graphenbasierten Zugriffskontrollmodell als Zwischenschritt im Migrationsprozess.Das Graphenmodell wird als gemeinsames Modell aller beteiligten Mechanismen entworfen und ermöglicht die Migration von Zugriffskontrolle, unabhängig von welchem Mechanismus ein Graph erstellt wurde. Dies ermöglicht die Migration zwischen allen Mechanismen, die durch ein gegebenes Graphenmodell dargestellt werden können und dem Vergleich zwischen den gewährten Zugang bei den verschiedenen Mechanismen.
description: The approach to access control migration used in this thesis is the creation of a graph-based access control model as an intermediate step in the migration process. The graph-model designed to be a common model of all involved mechanisms, enabling access control to be migrated from the graph to another mechanism, independent of which mechanism a graph was created from. This allows for the migration between any mechanisms represented by a given graph-model, but also for the comparison of the access granted by the different mechanisms.
How to optimize nonlinear force-free coronal magnetic field extrapolations from SDO/HMI vector magnetograms?
Creators: name: Wiegelmann, T.
name: Thalmann, J. K.
name: Inhester, B.
name: Tadesse, T.
name: Sun, X.
name: Hoeksema, J. T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The SDO/HMI instruments provide photospheric vector magnetograms with a high spatial and temporal resolution. Our intention is to model the coronal magnetic field above active regions with the help of a nonlinear force-free extrapolation code. Our code is based on an optimization principle and has been tested extensively with semi-analytic and numeric equilibria and been applied before to vector magnetograms from Hinode and ground based observations. Recently we implemented a new version which takes measurement errors in photospheric vector magnetograms into account. Photospheric field measurements are often due to measurement errors and finite nonmagnetic forces inconsistent as a boundary for a force-free field in the corona. In order to deal with these uncertainties, we developed two improvements: 1.) Preprocessing of the surface measurements in order to make them compatible with a force-free field 2.) The new code keeps a balance between the force-free constraint and deviation from the photospheric field measurements. Both methods contain free parameters, which have to be optimized for use with data from SDO/HMI. Within this work we describe the corresponding analysis method and evaluate the force-free equilibria by means of how well force-freeness and solenoidal conditions are fulfilled, the angle between magnetic field and electric current and by comparing projections of magnetic field lines with coronal images from SDO/AIA. We also compute the available free magnetic energy and discuss the potential influence of control parameters.
description: 17 Pages, 6 Figures, Sol. Phys., accepted
Measurement and modeling of the in-plane permeability of oriented strand-based wood composites
Creators: name: Zhang, Chao
Publisher: name: University of British Columbia
Year: 2009

description: The objective of this research is to investigate the effects of panel density and air flow direction on the in-plane permeability of oriented strand-based wood composites. In-plane permeability is a key factor governing the energy consumption and pressing time during manufacture. The result is expected to provide information which could potentially reduce the pressing time. The thick, oriented strand boards of five densities were made of aspen (Populus tremuloides), and pressed in the laboratory. The production procedure yielded a uniform vertical density profile and good strand orientation. The specimens were sealed in a specially designed specimen holder and connected to a permeability measurement apparatus. The permeability values in parallel, perpendicular, and 45° to the strand orientation were obtained. The results showed that permeability values decreased rapidly as the density increased. The permeability was highest in the parallel-to-strand direction, and lowest in the perpendicular-to-strand direction. The permeability value in 45° direction was between the values of parallel- and perpendicular-to-strand directions. A polynomial equation was fitted to the results and an R² was between 0.93 8 and 0.993. To examine the void structure changes during the densification, microscopic techniques were employed. Microscopic slides for each density level were prepared with a typical method widely used for petrography, and then investigated with a fluorescence microscope. The compression of inter-strand and intra-strand voids, including the failure of cell walls, was observed. The compression of cell structures was found and a high variability between regions was observed to occur within one specimen. A model for the permeability in the direction parallel to strand orientation was developed based on the microscopic and macroscopic geometry measurements. The vessel element was considered as the main path for intra-strand fluid transportation and its size development with compression was determined by the microscopic analysis. Permeability was then calculated by the sum of flows occurring intra-strand voids added with the effect of inter-strand voids. The model predictions closely matched the experimental data for densities between 450 and 700 kg/m³.
Investigation of potential roles of Phospholipase D in Arabidopsis thaliana seed oil accumulation
Creators: name: Yu, Yuanyuan
Publisher: name: University of British Columbia
Year: 2009

description: Most plants depend on the production of storage compounds in the seed to provide nutrients during germination. These storage compounds have been exploited by man for a variety of purposes. For example vegetable oil is an important lipid source for cooking and the production of lubricants, inks, paints, and biodiesels. Almost all seed oil is stored in the chemical form of triacylglycerol (TAG), and in mature seed, TAG is stored in densely packed oil bodies. Genetic engineering offers great potential to increase the amount and/or manipulate the type of oil produced. There are two routes to this goal: first, the development of existing plant species that already synthesize the desired novel oil into “alternative oilseed’ crops; second, the engineering of existing crops through the cloning of genes which determine the synthesis of novel oils and their introduction into existing crops such as oilseed rape (Brassica napus) by genetic transformation. Whichever approach is adopted we need to know how storage oil is accumulated in order to optimize yield. My research is part of a broader effort to explore the possibility of increasing oil content in Brassica species using Arabidopsis thaliana as a model system. My specific project examines whether the phospholipase D zeta (PLDZ) enzyme can be used to control oil production in Arabidopsis thaliana. In plants, PLDZ hydrolyzes membrane phospholipids to form phosphatidic acid, which is the branch point for the synthesis of diacyiglycerol that is an immediate precursor of storage oil. In addition, previous research had shown that the PLDZ gene was negatively regulated in the leaves by GLABRA 2 (GL2), a transcription factor that was also known to negatively regulate oil content in the seed. In this thesis I show that the pldzlpldz2 double mutant accumulates 11% less oil in the seed than did wild type, without differences in seed size, plant growth or development. Both PLDZ genes localize to the embryo and funiculus during the later stages of seed development. In the g12 mutant background, PLDZ transcript levels in the seeds are lower than in the wild type; besides the pldz]pldz2gl2 triple mutant shows intermediate oil content which is unlike neither pldzlpldz2 double mutant nor g12 mutant phenotype, suggesting that GL2 is not a negative regulator of PLDZ genes during oil production process.
Ice-induced vibrations of vertical structures
Creators: name: Ziemer, Gesa
Publisher: name: TUHH Universitätsbibliothek
Year: 2021
Subjects: subject: ice-induced vibrations
subject: Ice model testing
subject: Offshore engineering
classificationCode: 620
subject: Ingenieurwissenschaften

description: Vertikale Strukturen können durch driftendes Eis in Schwingung versetzt werden, doch der zugrundeliegende physikalische Prozess ist aktuell noch nicht ausreichend ergründet. Um den Einfluss lokaler Bruchprozesse auf das Auftreten solcher Schwingungen zu untersuchen, wurden Modellversuche durchgeführt, die erstmals eine räumlich hoch aufgelöste Messung von Kontaktdrücken ermöglichen. Die Analyse der erhobenen Daten zeigt einen deutlichen Einfluss der Relativgeschwindigkeit zwischen Eis und Struktur auf die Bruchprozesse und die Kontaktflächenentwicklung. Darauf aufbauend wurden eine Prognosemethode sowie ein Skalierungsansatz für das Auftreten Eis-erregter Schwingungen entwickelt.
description: Vertical structures exposed to drifting level ice can exhibit significant ice-induced vibrations. However, their fundamental physical process is not sufficiently understood to date. Therefore, novel model tests in ice have been conducted utilizing local pressure mapping techniques to assess the influence of local failure processes on the occurrence of ice-induced vibrations. Analysis of the acquired data reveals a significant impact of the relative velocity between ice and structure on the local failure and contact development. Based on this finding, a prediction method and a scaling approach are developed.
A quasi-Newton proximal splitting method
Creators: name: Becker, Stephen
name: Fadili, M. Jalal
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optimization and Control (math.OC)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 90C53, 90C06, 90C25, 90C30, 62J07, 47H05

description: A new result in convex analysis on the calculation of proximity operators in certain scaled norms is derived. We describe efficient implementations of the proximity calculation for a useful class of functions; the implementations exploit the piece-wise linear nature of the dual problem. The second part of the paper applies the previous result to acceleration of convex minimization problems, and leads to an elegant quasi-Newton method. The optimization method compares favorably against state-of-the-art alternatives. The algorithm has extensive applications including signal processing, sparse recovery and machine learning and classification.
Propositions for a high-quality, affordable and sustainable ‘Food Basket’ : scope of cooperation between India & Germany in areas relating to food processing industry
Creators: name: Tiwari, Rajnish
Publisher: name: Consulate General of India, Hamburg
Year: 2017
Subjects: subject: food processing
subject: India
subject: Germany
subject: frugal innovation
subject: organic food
subject: fairtrade
subject: affordable excellence
subject: affordability
classificationCode: 330
subject: Wirtschaft

description: The food processing industry in India is a sunrise industry, which has been growing above-average and is expected to grow further. Even though India has a large agricultural sector, the food processing industry has traditionally played a small role and it is only recently that it has been promoted as a measure to increase food security and generate employment. Germany’s food processing industry is a well-developed industry that is globally competitive. Nevertheless, it is faced with saturation in the domestic market, as far as conventional foods are concerned. Emerging, significant trends in Germany are health and wellness-enhancing and disease-preventing food products that are often organically produced, procured through fair trade and are increasingly plant-based (vegetarian/vegan), which coincides with the increasing popularity of Ayurveda and Yoga. These trends can be seen as areas where India has been traditionally strong. The two countries, thus, have enormous opportunities to collaborate. While German firms can participate in the growing market of India, Indian firms can benefit from the emerging trends in Germany, which play to India’s deep-rooted advantages. Indian companies can also benefit from the vocational trainings and other skill development programmes well-entrenched in the German food processing industry. In addition, India and Germany can engage in collaborative technology development efforts to develop frugal innovations in the food processing industry and in related sectors such as food processing and packaging equipment. Indo-German collaboration in the food processing industry has benefits that go well beyond the geographic limits of the two nations. The joining of forces can enhance the sustainability of the global food security and contribute to the fight against global food wastage & loss, hunger and poverty.
The Chemical and Dynamical Evolution of Isolated Dwarf Galaxies
Creators: name: Pilkington, K.
name: Gibson, B. K.
name: Calura, F.
name: Stinson, G. S.
name: Brook, C. B.
name: Brooks, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using a suite of simulations (Governato et al. 2010) which successfully produce bulgeless (dwarf) disk galaxies, we provide an analysis of their associated cold interstellar media (ISM) and stellar chemical abundance patterns. A preliminary comparison with observations is undertaken, in order to assess whether the properties of the cold gas and chemistry of the stellar components are recovered successfully. To this end, we have extracted the radial and vertical gas density profiles, neutral hydrogen velocity dispersion, and the power spectrum of structure within the ISM. We complement this analysis of the cold gas with a brief examination of the simulations' metallicity distribution functions and the distribution of alpha-elements-to-iron.
description: To appear in the proceedings of the JENAM 2010 Symposium "Dwarf Galaxies: Keys to Galaxy Formation and Evolution" (Lisbon, 9-10 September 2010), P. Papaderos, S. Recchi, G. Hensler (eds.), Springer Verlag (2011), in press
VLBI for Gravity Probe B. VII. The Evolution of the Radio Structure of IM Pegasi
Creators: name: Bietenholz, M. F.
name: Bartel, N.
name: Lebach, D. E.
name: Ransom, R. R.
name: Ratner, M. I.
name: Shapiro, I. I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present measurements of the total radio flux density as well as very-long-baseline interferometry (VLBI) images of the star, IM Pegasi, which was used as the guide star for the NASA/Stanford relativity mission Gravity Probe B. We obtained flux densities and images from 35 sessions of observations at 8.4 GHz (wavelength = 3.6 cm) between 1997 January and 2005 July. The observations were accurately phase-referenced to several extragalactic reference sources, and we present the images in a star-centered frame, aligned by the position of the star as derived from our fits to its orbital motion, parallax, and proper motion. Both the flux density and the morphology of IM Peg are variable. For most sessions, the emission region has a single-peaked structure, but 25% of the time, we observed a two-peaked (and on one occasion perhaps a three-peaked) structure. On average, the emission region is elongated by 1.4 +- 0.4 mas (FWHM), with the average direction of elongation being close to that of the sky projection of the orbit normal. The average length of the emission region is approximately equal to the diameter of the primary star. No significant correlation with the orbital phase is found for either the flux density or the direction of elongation, and no preference for any particular longitude on the star is shown by the emission region.
description: Accepted for publication in the Astrophysical Journal Supplement Series
Numerical modelling and simulation of cavitating marine propeller flows
Creators: name: Gaschler, Maria
Publisher: name: TUHH Universitätsbibliothek
Year: 2017
Subjects: subject: Panel methods
subject: Sheet cavitation
subject: Propeller flows
subject: Potential flow theory
classificationCode: 620
subject: Ingenieurwissenschaften

description: Es wird ein reibungsfreies Randelement-Verfahren zur Simulation der stationären und instationären partiellen Schichtkavitation an Schiffspropellern entwickelt. Das numerische Verfahren wird anhand mehrerer Testfälle validiert und auf die Berechnung von hydrodynamischen Belastungen angewendet, die infolge einer kavitierenden Propellerströmung auf umliegende Strukturen im Hafenbereich induziert werden.
description: A three-dimensional inviscid boundary element method for the simulation of steady and unsteady partial sheet cavitation on marine propellers is developed. The numerical method is validated in several test cases and applied to the calculation of hydrodynamic loads generated by the flow field around and behind a cavitating propeller on the surrounding structures in the port area.
Supplementary materials to Journal of Insects as Food and Feed article JIFF2022.015: Effects of diet on the biological activities and content of functional components of silkworm Bombyx mori and its faeces
Creators: name: Tagawa, Y.
name: Kawahara, T.
name: Kotani, S.
name: Wada, M.
Publisher: name: Brill Online
Year: 2023
Subjects: Animal nutrition
Animal growth and development
Food nutritional balance

description: Silkworm, Bombyx mori, and its faeces are notable healthy foods because of their biologically active components originating from mulberry (Morus spp.) leaves. However, in modern sericulture, silkworms are reared on artificial diet made primarily from defatted soybeans and dried mulberry leaf powder throughout the year. Neither the contents of functional components nor the biological activity of silkworms raised on artificial diet and their faeces has been investigated. Therefore, 1-deoxynojirimycin (DNJ) content, α-glucosidase inhibitory activity, Trolox equivalent antioxidant capacity (TEAC), total phenolic, total flavonoid and chlorophyll content were evaluated in silkworms and their faeces reared on mulberry leaves, artificial diet and then artificial diet switched to mulberry leaf from the fifth instar for four days. The DNJ content of silkworms depended on that in their diet and was significantly lower in silkworms fed with artificial diet than in those fed with mulberry leaves similar to the α-glucosidase inhibitory activity. On the contrary, TEAC, total phenolic content and total flavonoid content were similar in all silkworms regardless of feeding conditions. In the faeces of the artificial diet-reared group, TEAC, total phenolic content and total flavonoid content were significantly higher than those of the mulberry leaf-reared group. Chlorophyll content in faeces depended on the content of diet, whereas that in silkworms was low regardless of the diet type. The biological activities and contents of functional compounds in the artificial diet-reared group were at similar levels with those of the mulberry leaf-reared group when the diet switched to mulberry leaf from the first day of the fifth instar for four days, indicating that the biological activities and content of functional components in silkworms and its faeces are defined by diet and changeable over a short period.
Block type symmetry of bigraded Toda Hierarchy
Creators: name: Li, Chuanzhong
name: He, Jingsong
name: Su, Yucai
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper, we define Orlov-Schulman's operators $M_L$, $M_R$, and then use them to construct the additional symmetries of the bigraded Toda hierarchy (BTH). We further show that these additional symmetries form an interesting infinite dimensional Lie algebra known as a Block type Lie algebra, whose structure theory and representation theory have recently received much attention in literature. By acting on two different spaces under the weak W-constraints we find in particular two representations of this Block type Lie algebra.
description: 30 pages, accepted by Journal of Mathematical Physics
The relationship between serology of hepatitis E virus with liver and kidney function in kidney transplant patients
Creators: name: Zeraati, Abbas Ali
name: Nazemian, Fatemeh
name: Takalloo, Ladan
name: Sahebkar, Amirhossein
name: Heidari, Elahe
name: Yaghoubi, Mohammad Ali
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2016
Subjects: hepatitis E
kidney transplant
creatinine
alanine aminotransferase
aspartate aminotransferase
alkaline phosphatase

description: Although hepatitis E virus (HEV) is well known to cause acute hepatitis, there are reports showing that HEV may also be responsible for progression of acute to chronic hepatitis and liver cirrhosis in patients receiving organ transplantation. In this study, we aimed to evaluate the prevalence of HEV in patients with kidney transplantation. In this study, 110 patients with kidney transplantation were recruited, and anti-HEV IgG, creatinine, alanine transaminase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), and estimated glomerular filtration rate (eGFR) in the first, third and sixth months after renal transplantation were measured. The mean serum anti-HEV IgG titers in the study participants was 1.36 (range 0.23 to 6.3). Twenty-three patients were found to be seropositive for HEV Ab defined as anti-HEV IgG titer > 1.1. The difference in liver and renal function tests (creatinine, eGFR, AST, ALT and ALP) at different intervals was not significant between patients with HEV Ab titers higher and lower than 1.1 (p > 0.05). However, an inverse correlation was observed between HEV Ab and eGFR values in the first (p = 0.047, r = -0.21), third (p = 0.04, r = -0.20) and sixth (p = 0.04, r = -0.22) months after renal transplantation in patients with HEV Ab < 1.1 but not in the subgroup with HEV Ab > 1.1. Also, a significant correlation between age and HEV Ab levels was found in the entire study population (p = 0.001, r = 0.33). Our findings showed a high prevalence of seropositivity for anti-HEV IgG in patients receiving renal transplants. However, liver and renal functions were not found to be significantly different seropositive and seronegative patients by up to 6 months post-transplantation.
description: EXCLI Journal; 15:Doc343; ISSN 1611-2156
Investigating the Death of the Early Paleozoic Moyero River Geomagnetic Superchron: Middle Ordovician Paleomagnetism from Estonia
Creators: name: Grappone, Joseph Michael
Publisher: name: California Institute of Technology
Year: 2016
Subjects: subject: Moyero River superchron
subject: Estonia
subject: Paleomagnetism
subject: Ordovician
subject: limestone
subject: Geophysics
subject: FOS: Earth and related environmental sciences

description: Flat-lying Early and Middle Ordovician limestones exposed on the North margin of Estonia provide key insights into the early Paleozoic biosphere and climatic history of the Baltic Platform, and potentially offer a site for calibrating the duration of the proposed Moyero River Reversed Superchron.  Past paleomagnetic analyses on these rocks have been focused primarily on determining paleomagnetic pole positions and have been hampered by relatively weak remanent magnetizations.  We therefore applied techniques of the Rock and Paleomagnetic Instrument Development (RAPID) consortium using thin-walled, low-noise quartz glass sample holders on an automatic system to enhance magnetostratigraphic resolution.  Our results, based on over 300 oriented core samples spanning the stratigraphic interval from the Volkhov stage, up through the Lasnamägi stage, confirm previous work isolating a stable characteristic magnetization of reversed polarity, and furthermore confirm the presence of an interval of magnetically Reversed polarity spanning an interval of at least 15 million year duration.  In addition, we recognize a magnetic overprint of presumed Normal polarity held in antiferromagnetic phases, of presumed Permian age, based on the apparent polar wander path given by (Plado et al., 2010).
Noether's Symmetry Theorem for Variational and Optimal Control Problems with Time Delay
Creators: name: Frederico, Gastao S. F.
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Dynamical Systems (math.DS)
subject: Classical Analysis and ODEs (math.CA)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 49K05, 49S05

description: We extend the DuBois-Reymond necessary optimality condition and Noether's symmetry theorem to the time delay variational setting. Both Lagrangian and Hamiltonian versions of Noether's theorem are proved, covering problems of the calculus of variations and optimal control with delays.
description: This is a preprint of a paper whose final and definite form will appear in the international journal Numerical Algebra, Control and Optimization (NACO). Paper accepted for publication 15-March-2012
Impact of Protostellar Outflow on Star Formation: Effects of Initial Cloud Mass
Creators: name: Machida, Masahiro N.
name: Matsumoto, Tomoaki
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Star formation efficiency controlled by the protostellar outflow in a single cloud core is investigated by three-dimensional resistive MHD simulations. Starting from the prestellar cloud core, the star formation process is calculated until the end of the main accretion phase. In the calculations, the mass of the prestellar cloud is parameterized. During the star formation, the protostellar outflow is driven by the circumstellar disk. The outflow extends also in the transverse direction until its width becomes comparable to the initial cloud scale, and thus, the outflow has a wide opening angle of >40 degrees. As a result, the protostellar outflow sweeps up a large fraction of the infalling material and ejects it into the interstellar space. The outflow can eject at most over half of the host cloud mass, significantly decreasing star formation efficiency. The outflow power is stronger in clouds with a greater initial mass. Thus, the protostellar outflow effectively suppresses star formation efficiency in a massive cloud. The outflow weakens significantly and disappears in several free-fall timescales of the initial cloud after the cloud begins to collapse. The natal prestellar core influences the lifetime and size of the outflow. At the end of the main accretion phase, a massive circumstellar disk comparable in mass to the protostar remains. Calculations show that typically, ~30% of the initial cloud mass is converted into the protostar and ~20% remains in the circumstellar disk, while ~40% is ejected into the interstellar space by the protostellar outflow. Therefore, a single cloud core typically has a star formation efficiency of 30-50%.
description: 43 pages, 14 figures, Submitted to MNRAS. For high resolution figures see http://jupiter.geo.kyushu-u.ac.jp/machida/arxiv/sfe.pdf
Service provider - customer interactions: key to success of innovative services
Creators: name: Hoffmann, Antje
name: Herstatt, Cornelius
Publisher: name: TUHH Universitätsbibliothek
Year: 2005
Subjects: subject: service provider ; service market ; service marketing ; service purchasing
classificationCode: 85.15
subject: Forschung und Entwicklung
subject: Dienstleistung / Marketing
subject: Dienstleistungsmarkt
subject: Dienstleistung / Management

description: The majority of service providers have recognized the need to develop innovative services that meet sophisticated customer needs on time. Because of structural changes in the market, rising costs and shorter lifecycles of services and technologies this has become a more demanding task than ever before. Most of the existing research focuses on the development of products rather than services. However, research in service related innovation activities is highly rewarding, as the service market is about to become a dominant factor of economic development. The objective of this paper is to provide an overview of the current state of interaction research with special focus on service marketing and service purchasing processes. A short presentation of the most important theoretical results and findings from empirical studies will be given. Furthermore, we will present results from our own case study investigating the IT Service industry. In this context, we have identified three different approaches of successful interactions between service providers and potential buyers during marketing and purchasing processes with innovative results. We will describe these approaches, show their similarities and differences and as a result, provide recommendations for the service industry and potential buyers.
Hydrodynamic flow from RHIC to LHC
Creators: name: Bozek, Piotr
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The hydrodynamic model for the expansion of the fireball in relativistic heavy-ion collisions is presented. Calculations using relativistic hydrodynamics of a fluid with small viscosity yield a satisfactory description of the experimental data on the particle spectra, the elliptic flow or the interferometry radii.
description: Presented at Strangeness in Quark Matter 2011, Sept. 18--24, Cracow, Poland
Admission factors as predictors of job success among graduates of the school of social welfare
Creators: name: Stockman, Thomas J.
Publisher: name: University of Calgary
Year: 1971
Subjects: subject: HV 11 S74 1971
subject: Social work education
subject: Universities and colleges - Admission
subject: Prediction of occupational success
subject: Social workers

description: Bibliography: p. 29-34.
title: Eine Methode zur strategischen Planung modularer Produktprogramme
title: A method for strategic planning of modular product portfolios
titleType: AlternativeTitle
Creators: name: Jonas, Henry
Publisher: name: TuTech Innovation
Year: 2013
Subjects: subject: Produktprogrammplanung
subject: Product Development
subject: Product Planing
classificationCode: 330
subject: Wirtschaft
classificationCode: 600
subject: Technik
classificationCode: 52.00
subject: Maschinenbau, Energietechnik, Fertigungstechnik: Allgemeines
subject: Produktmanagement
subject: Produktentwicklung
subject: Strategische Planung
subject: Methode

description: Durch den Wechsel von Verkäufer- zu Käufermärkten ist es für die meisten Unternehmen erforderlich, eine hohe Varianz individualisierter Produkte anzubieten. Allerdings führt eine hohe Produktvarianz in der Regel zu einer steigenden Komplexität innerhalb des Unternehmens. Ein zentraler Ansatz muss es deshalb sein, die angebotene Vielfalt marktgerecht auszurichten und die angebotene, extern hohe Varianz unternehmensintern zu reduzieren. Im Rahmen dieser Arbeit wird eine neue Methode zur strategischen Planung modularer Produktprogramme vorgestellt. In der ersten Phase der Methode wird das bestehende Produktprogramm zunächst technisch und wirtschaftlich analysiert. Darauf aufbauend werden Szenarien für die zukünftige zusammensetzung des Produktprogrammes entwickelt und visualisiert. In der zweiten Phase werden programmweit Konzepte für Übernahmekomponenten entwickelt und anhand von Kennzahlen bewertet. Die entwickelte Methode bietet eine entscheidende Hilfestellung bei der strategischen Planung modularer Produktprogramme, durch das Vorgehen wird der Entscheidungsprozess transparent und dokumentierbar geführt. Durch das Denken in Szenarien können Unsicherheiten bezüglich der zukünftigen Entwicklung dargestellt und analysiert werden. Die programmweite Konzeption von Übernahmekandidaten erlaubt eine Lösung von der Betrachtung einzelner Produktfamilien zur Entwicklung weitreichender Übernahmekonzepte, um so auf Programmebene die Grundlage zu einer deutlichen Komplexitätsreduzierung zu schaffen.
description: The Change from seller's to buyer's market leads to a high variance of individualized products for most companies. However, a high product variety usually leads to an increased complexity within the company. Therefore a key approach must be to align the offered external variety with market demands and to reduce the internal variety within the company. In this work, a new method for strategic planning of modular product programs is presented. In the first Phase of the method the existing product program is analyzed technically and economically. On this basis, scenarios for the future composition of the product range are developed and visualized. In the second phase concepts for program-wide takeover components are developed and evaluated based on performance indicators.
State masculinities in Siam, 1910-1925
Creators: name: Scalena, Adam Nicholas
Publisher: name: University of British Columbia
Year: 2009

description: This essay examines the crucial role of certain types of gender constructions in the nationalist project. The Siamese state had to reform in the late nineteenth century if it was to survive in an Asia dominated by European imperial powers. The Chakri dynasty created a salaried bureaucracy both for its civilian and military functions, and perhaps more importantly, strictly separated the two functions in the process. This bureaucracy created new problems for the dynasty. How could it ensure loyalty to a hereditary monarch when his position was becoming increasingly superfluous? How could the monarchy maintain its centrality within the state? King Vajiravudh responded to the new challenge by resorting to a gendered strategy; through creating the paramilitary organization, The Wild Tigers Corps, he built up a solidarity among the men staffing this single-sex institution. The king cultivated a warrior ethos among the bureaucrats and positioned himself as the chief warrior. Additionally, through his didactic writings, he encouraged his ‘wild tigers’ to reform their domestic life so that they could serve the state more effectively. Government officials were told to stick to monogamous relationships and be content with a humble Thai wife who could provide a nurturing home life. This analysis of King Vajiravudh’s initiatives demonstrates that changing conceptions of masculinities were intimately linked to the formation of the Siamese nation-state.
Warped Vacuum Statistics
Creators: name: Ahlqvist, Pontus
name: Greene, Brian R.
name: Kagan, David
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the effect of warping on the distribution of type IIB flux vacua constructed with Calabi-Yau orientifolds. We derive an analytical form of the distribution that incorporates warping and find close agreement with the results of a Monte Carlo enumeration of vacua. Compared with calculations that neglect warping, we find that for any finite volume compactification, the density of vacua is highly diluted in close proximity to the conifold point, with a steep drop-off within a critical distance.
description: 30 pages, 2 figures
Bergson's critique of the intellect and its implications for the theory of political obligation
Creators: name: Chudleigh, Myrna Morgan
Publisher: name: University of Calgary
Year: 1976
Subjects: subject: JC 261 B47 C588 1976 Microfiche
subject: Bergson, Henri Louis, 1859-1941 - Political science
subject: Natural obligations
subject: Political participation
subject: State, The

description: Bibliography: p. 58-64.
Relation between civilization and politics in Gandhi's thought
Creators: name: Paragg, Ralph Ramsarup
Publisher: name: University of Calgary
Year: 1971
Subjects: subject: JC 328 P35 1971
subject: Gandhi, Mahatma, 1869-1948
subject: India - Politics and government
subject: Government, Resistance to
subject: State, The
subject: Political ethics
subject: Civilization

description: Bibliography: p. 117-124.