cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A global eddy-resolving ocean forecast system in China – LICOM Forecast System (LFS)
Creators: name: Liu, Hailong
name: Lin, Pengfei
name: Zheng, Weipeng
name: Luan, Yihua
name: Ma, Jinfeng
name: Ding, Mengrong
name: Mo, Huier
name: Wan, Liying
name: Ling, Tiejun
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Inorganic Chemistry

description: A global eddy-resolving forecast system LFS is developed based on a primitive ocean general circulation model. The system's configuration, forecast experiments, and a preliminary evaluation of the preoperational system are shown. In the preoperational stage, since the full data assimilation has not yet been set up for LFS, the initial state is obtained by nudging the ocean temperature and salinity from an ocean analysis dataset. Despite this, the LFS demonstrates a generally good performance in short-term oceanography forecasting, except for sea level anomaly (SLA). The median values of the 1-day forecast leading root mean square error (RMSE) for the sea surface temperature (SST), SLA, upper 2000 m temperature, and salinity are approximately 0.52°C, 0.10 m, 0.57°C and 0.13 psu, respectively. Although there are slight warm biases in the forecasted SST, the forecasts of temperature and salinity in the thermocline by the LFS are comparable with the results of operational oceanography systems under the framework of the Intercomparison and Validation Task Team. However, the forecast SLA has a relatively large RMSE related to the absence of direct observational constraints in the initial state. Further investigations are needed to improve the performance of LFS.
About the tensorial nature of the Christoffel symbols, or lack thereof
Creators: name: Patiño, Leonardo
name: Söhle, Jessica
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: From the first approach to General Relativity we learn about the Christoffel symbols, and it is easy to notice that their coordinated components do not transform as a tensor. It is then confusing to find renowned books on the subject that refer to these symbols as if they were indeed a tensor. A prominent example of such a book is "GeneralRelativity" written by Rober Wald, which has been embraced as a textbook on the matter by a large amount of prestigious institutions around the globe. The simplest alternative would be to think that the books just mentioned present a wrong description of the Christoffel symbols, but this is not the case. Understanding the mathematical foundation of why some authors treat the Christoffel symbols as a tensor provides valuable insight about the nature of the metric connection in General Relativity, and that is why in this paper we dedicate the space to the needed analysis. The discussion provided here is aimed to those that have already taken at least one class in General Relativity, hence some of the theoretical tools will be taken as known by the reader.
description: Body of the paper in Spanish
Spin pumping in strongly coupled magnon-photon systems
Creators: name: Maier-Flaig, Hannes
name: Harder, Michael
name: Gross, Rudolf
name: Huebl, Hans
name: Goennenwein, Sebastian T. B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We experimentally investigate magnon-polaritons, arising in ferrimagnetic resonance experiments in a microwave cavity with a tuneable quality factor. To his end, we simultaneously measure the electrically detected spin pumping signal and microwave reflection (the ferrimagnetic resonance signal) of a yttrium iron garnet (YIG) / platinum (Pt) bilayer in the microwave cavity. The coupling strength of the fundamental magnetic resonance mode and the cavity is determined from the microwave reflection data. All features of the magnetic resonance spectra predicted by first principle calculations and an input-output formalism agree with our experimental observations. By changing the decay rate of the cavity at constant magnon-photon coupling rate, we experimentally tune in and out of the strong coupling regime and successfully model the corresponding change of the spin pumping signal. Furthermore, we observe the coupling and spin pumping of several spin wave modes and provide a quantitative analysis of their coupling rates to the cavity.
description: 7 pages, 4 figures
title: Walther Schaffer
title: Ehrenpräsident des Verbandes Schweizer. Schreinermeister und Möbelfabrikanten, geboren am 19. Mai 1876, gestorben den 16. März 1943 in Burgdorf
titleType: Subtitle
Creators: name: (:Unkn) Unknown
Publisher: name: Zentralbibliothek Zürich
Year: 1943
Subjects: subject: 330 Wirtschaft
subject: 920 Biografien, Genealogie, Insignien
subject: Nachruf

description: Enthält: Beitrag von F. Huonder; Zum Tod Walther Schaffers, von Alb. Lienhard, Zentralpräsident; Abschied von unserem ehem. Zentralpräsidenten, von den angestellten des Zentralverbandes; Abschied des Kant.-bern. Gewerbeverbandes von Walther Schaffer, von P.B.; die Trauerfeier: Ansprachen bei der Trauerfeier im Krematorium in Bern: Traueransprache von Hr. Pfarrer A. Schläfli, Burgdorf, an der Kremation in Bern; Die Abschiedsworte von Zentralpräsident Albert Lienhard, Zürich, im Krematorium, Bern; Abdankungsansprache von Nationalrat Hs. Müller, Präsident des Kantonal-bernischen Gewerbeverbandes. Dank für alle Kondolenzen beim Hinschied von Ehrenpräsident des VSSM, Walther Schaffer, vom Zentralsekretariat, Gedicht "Mein lieber Freund!" von W. Hoyermann
Links and Legibility: Making Sense of Historical U.S. Census Automated Linking Methods
Creators: name: Ghosh, Arkadev
name: Hwang, Sam Il Myoung
name: Squires, Munir
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy
subject: Computational Biology

description: How does handwriting legibility affect the performance of algorithms that link individuals across census rounds? We propose a measure of legibility, which we implement at scale for the 1940 U.S. Census, and find strikingly wide variation in enumeration-district-level legibility. Using boundary discontinuities in enumeration districts, we estimate the causal effect of low legibility on the quality of linked samples, measured by linkage rates and share of validated links. Our estimates imply that, across eight linking algorithms, perfect legibility would increase the linkage rate by 5–10 percentage points. Improvements in transcription could substantially increase the quality of linked samples.
Links and legibility: Making sense of historical US Census automated linking methods *
Creators: name: Ghosh, Arkadev
name: Hwang, Sam Il Myoung
name: Squires, Munir
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy
subject: Computational Biology

description: How does handwriting legibility affect the performance of algorithms that link individuals across census rounds? We propose a measure of legibility, which we implement at scale for the 1940 US Census, and find strikingly wide variation in enumeration-district-level legibility. Using boundary discontinuities in enumeration districts, we estimate the causal effect of low legibility on the quality of linked samples, measured by linkage rates and share of validated links. Our estimates imply that, across eight linking algorithms, perfect legibility would increase the linkage rate by 5 to 10 percentage points. Improvements in transcription could substantially increase the quality of linked samples.
Diffusion of a Brownian ellipsoid in a force field
Creators: name: Aurell, Erik
name: Bo, Stefano
name: Dias, Marcelo
name: Eichhorn, Ralf
name: Marino, Raffaele
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We calculate the effective long-term convective velocity and dispersive motion of an ellipsoidal Brownian particle in three dimensions when it is subjected to a constant external force. This long-term motion results as a "net" average behavior from the particle rotation and translation on short time scales. Accordingly, we apply a systematic multi-scale technique to derive the effective equations of motion valid on long times. We verify our theoretical results by comparing them to numerical simulations.
Pathophysiological role of nerve growth factor in arthritis
Creators: name: Lindsay., Mandy
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
A Lagrangian view on complete integrability of the two-component Camassa-Holm system
Creators: name: Eckhardt, Jonathan
name: Grunert, Katrin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: Primary 37K10, 34B05, Secondary 35Q53, 37K15

description: We show how the change from Eulerian to Lagrangian coordinates for the two-component Camassa-Holm system can be understood in terms of certain reparametrizations of the underlying isospectral problem. The respective coordinates correspond to different normalizations of an associated first order system. In particular, we will see that the two-component Camassa-Holm system in Lagrangian variables is completely integrable as well.
description: 12 pages
Emergence and Maintenance of Excitability: Kinetics over Structure
Creators: name: Marom, Shimon
Publisher: name: arXiv
Year: 2016
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: Emergence and maintenance of excitability is often phrased in terms of arriving at and remaining about a manifold of 'solutions' embedded in a high dimensional parameter space. Alongside studies that extend traditional focus on control-based regulation of structural parameters (channel densities), there is a budding interest in self-organization of kinetic parameters. In this picture, ionic channels are continually forced by activity in-and-out of a large pool of states not available for the mechanism of excitability. The process, acting on expressed structure, provides a bed for generation of a spectrum of excitability modes. Driven by microscopic fluctuations over a broad range of temporal scales, self-organization of kinetic parameters extends the metaphors and tools used in the study of development of excitability.
Path computation in multi-layer networks: Complexity and algorithms
Creators: name: Lamali, Mohamed Lamine
name: Fergani, Nasreddine
name: Cohen, Johanne
name: Pouyllau, Hélia
Publisher: name: arXiv
Year: 2016
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Carrier-grade networks comprise several layers where different protocols coexist. Nowadays, most of these networks have different control planes to manage routing on different layers, leading to a suboptimal use of the network resources and additional operational costs. However, some routers are able to encapsulate, decapsulate and convert protocols and act as a liaison between these layers. A unified control plane would be useful to optimize the use of the network resources and automate the routing configurations. Software-Defined Networking (SDN) based architectures, such as OpenFlow, offer a chance to design such a control plane. One of the most important problems to deal with in this design is the path computation process. Classical path computation algorithms cannot resolve the problem as they do not take into account encapsulations and conversions of protocols. In this paper, we propose algorithms to solve this problem and study several cases: Path computation without bandwidth constraint, under bandwidth constraint and under other Quality of Service constraints. We study the complexity and the scalability of our algorithms and evaluate their performances on real topologies. The results show that they outperform the previous ones proposed in the literature.
description: IEEE INFOCOM 2016, Apr 2016, San Francisco, United States. To be published in IEEE INFOCOM 2016, \
A new mass scale, implications on black hole evaporation and holography
Creators: name: Burikham, Piyabut
name: Dhanawittayapol, Rujikorn
name: Wuthicharn, Taum
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider a new mass scale $M_{T}=(\hbar^{2}\sqrtΛ/G)^{1/3}$ constructed from dimensional analysis by using $G$, $\hbar$ and $Λ$ and discuss its physical interpretation. Based on the Generalized Uncertainty Relation, a black hole with age comparable to the universe would stop radiating when the mass reaches a new mass scale $M'_{T}=c(\hbar/G^{2}\sqrtΛ)^{1/3}$ at which its temperature corresponds to the mass $M_{T}$. Black hole remnants could have masses ranging from a Planck mass to a trillion kilograms. Holography persists even when the uncertainty relation is modified to the Minimum Length Uncertainty Relation~(MLUR). The remnant black hole entropy is proportional to the surface area of the black hole in unit of the Planck area in arbitrary noncompact dimensions.
description: 17 pages, 3 figures
Recrafting futures: Post-material transformations toward clothing longevity
Creators: name: Maione, Donna
Publisher: name: Carnegie Mellon University
Year: 2023
Subjects: subject: 120306 Textile and Fashion Design
subject: FOS: Arts (arts, history of arts, performing arts, music)

description: Like most modern consumer products, clothing relies on a global supply of extractive and linear materials. This economic model leads to exponential growth in waste across every stage in the supply chain. As of 2018, the United States Environmental Protection Agency reported that over eleven million tons of textiles were sent to landfills. Aligned with their projections, these numbers continue to increase. The growing trend toward sustainable solutions is embedded in the existing capitalist paradigm of exponential economic growth on a finite planet. This "business as usual" approach is problematic as the depletion of resources is beyond the point of sustaining to the point of repair. My research is positioned as a radical alternative, focusing on individuals in domestic and community spaces, leveraging the power of craft as a reparative practice for clothing as a means of breaking away from capitalist notions of the future. Sustainable fashion research examines the complexities of social norms and attitudes, examines the vitality of craft, and suggests people engage more with their clothing to deepen their attachment and promote longevity. Amateurs, enthusiasts, and emerging designers are moving away from fast fashion in favor of small, local practices, demonstrating how social forces can have a significant impact. These communities of practice engage a broader population, lowering the barrier to entry and making it easier to pivot and adapt to changing circumstances. My research explores radical alternatives to fashion through slow, small, and local DIY mending and recrafting practices. Through prototyping and ethnographic experiential methods, this body of work sits between a personal and collective experience of recrafting clothing while extending a model to consider an ontology for sustained care and repair for clothing. Using Transition Design and design activism approaches, I seek to uncover equitable and sustainable pathways in the short term and long term by engaging with the clothing we already own. To disrupt the current system of taking, making, and wasting, this dissertation explores new ways of imagining plural futures for clothing systems through practices of craft and remaking.
title: The Legacy of Colonization and Civil Societies in South Africa
Creators: name: Frydenlund, Erika
name: Miller-Felton, Melissa
name: Ayankojo, Bolu
Publisher: name: Old Dominion University Libraries
Year: 2023

description: This research analyzes the unique ways that civil societies operate in Sub-Saharan Africa in the context of post-apartheid Cape Town, South Africa. Decades after the demise of apartheid, remnants of inequality remain without the promise of actionable change. We used a computational modeling approach to understand the dynamics of migrants in the receiving community as derived from qualitative interviews conducted with 24 stakeholders in Cape Town, South Africa between 2020 and 2021. Our findings show that the presence of NGOs can promote access to resources and reduce xenophobia if they can have the right influence on government policies.
Long term brain dynamics extend cognitive neuroscience to timescales relevant for health and physiology
Creators: name: Wang, Maxwell B.
Publisher: name: Carnegie Mellon University
Year: 2023
Subjects: subject: Neuroscience
subject: 10109 Ordinary Differential Equations, Difference Equations and Dynamical Systems
subject: FOS: Mathematics

description: In medicine, we define and treat diseases based on their causes. We classify infections as viral, fungal, parasitic, or bacterial with specialized treatments for each class. We define and treat tumors according to which genetic abnormalities allow them to proliferate uncontrollably. This tenet underlies almost every field of medicine except for the brain where many diseases are largely defined by their symptoms. As a result, with a few notable exceptions, we define treatments of the brain around which symptoms to use them for rather than what root cause they solve. But what if we could peer inside somebody’s brain, identify the pathological circuits and activity that drives a patient’s disease, and then gear our treatment towards that? While past attempts at this have shown initial promise, they have been limited by small sample sizes and difficulty in selecting appropriate study populations. In this thesis, I explore how both these problems can be addressed by a paradigm shift to study neural activity over very long timescales. In medicine, we define and treat diseases based on their causes. We classify infections as viral, fungal, parasitic, or bacterial with specialized treatments for each class. We define and treat tumors according to which genetic abnormalities allow them to proliferate uncontrollably. This tenet underlies almost every field of medicine except for the brain where many diseases are largely defined by their symptoms. As a result, with a few notable exceptions, we define treatments of the brain around which symptoms to use them for rather than what root cause they solve. But what if we could peer inside somebody’s brain, identify the pathological circuits and activity that drives a patient’s disease, and then gear our treatment towards that? While past attempts at this have shown initial promise, they have been limited by small sample sizes and difficulty in selecting appropriate study populations. In this thesis, I explore how both these problems can be addressed by a paradigm shift to study neural activity over very long timescales.
Robophysical study of jumping dynamics on granular media
Creators: name: Aguilar, Jeffrey
name: Goldman, Daniel I.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Characterizing forces on deformable objects intruding into sand and soil requires understanding the solid and fluid-like responses of such substrates and their effect on the state of the object. The most detailed studies of intrusion in dry granular media have revealed that interactions of fixed-shape objects during free impact (e.g. cannonballs) and forced slow penetration can be described by hydrostatic and hydrodynamic-like forces. Here we investigate a new class of granular interactions: rapid intrusions by objects that change shape (self-deform) through passive and active means. Systematic studies of a simple spring-mass robot jumping on dry granular media reveal that jumping performance is explained by an interplay of nonlinear frictional and hydrodynamic drag as well as induced added mass (unaccounted by traditional intrusion models) characterized by a rapidly solidified region of grains accelerated by the foot. A model incorporating these dynamics reveals that added mass degrades the performance of certain self-deformations due to a shift in optimal timing during push-off. Our systematic robophysical experiment reveals both new soft matter physics and principles for robotic self-deformation and control, which together provide principles of movement in deformable terrestrial environments.
description: 36 pages, 6 figures, 3 extended data figures, supplementary info include, captions to supplementary movies included
Multi-beaming propertieis of reflector antennas used in radio telescopes with wide field of view
Creators: name: Iupikov, O.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The given work is devoted to the modern developments in the field of radio astronomy instrumentation. In particular, the sensitivity of the multi-beam reflector radio telescope which is fed by phased array (PAF) is considered. Using PAF as reflector feed allows obtaining wide and continuous field of view (FOV) of the telescope. This has several advantages with compare to horn-cluster feeds which are described in this work. The sensitivity inside whole FOV was computed using three different beamforming schemes.
description: (in Russian)
Semiparametric stationarity and fractional unit roots tests based on data-driven multidimensional increment ratio statistics
Creators: name: Bardet, Jean-Marc
name: Dola, Béchir
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: In this paper, we show that the central limit theorem (CLT) satisfied by the data-driven Multidimensional Increment Ratio (MIR) estimator of the memory parameter d established in Bardet and Dola (2012) for d $\in$ (--0.5, 0.5) can be extended to a semiparametric class of Gaussian fractionally integrated processes with memory parameter d $\in$ (--0.5, 1.25). Since the asymptotic variance of this CLT can be estimated, by data-driven MIR tests for the two cases of stationarity and non-stationarity, so two tests are constructed distinguishing the hypothesis d \textless{} 0.5 and d $\ge$ 0.5, as well as a fractional unit roots test distinguishing the case d = 1 from the case d \textless{} 1. Simulations done on numerous kinds of short-memory, long-memory and non-stationary processes, show both the high accuracy and robustness of this MIR estimator compared to those of usual semiparametric estimators. They also attest of the reasonable efficiency of MIR tests compared to other usual stationarity tests or fractional unit roots tests. Keywords: Gaussian fractionally integrated processes; semiparametric estimators of the memory parameter; test of long-memory; stationarity test; fractional unit roots test.
description: arXiv admin note: substantial text overlap with arXiv:1207.2453
GUIA DE BOLSO PARA: MANEJO DA SÍFILIS EM GESTANTES E PARCEIRO (S)
Creators: name: Leal, Tamilis Feitosa
name: Almeida, Camilo Eduardo Pereira
name: Santos, Felipe Valino dos
name: Silva, André Vilhena da
name: Fernandes, Samara Costa
name: Oliveira, Manuela Furtado Veloso de
name: Souza, Arilson Silva dos Santos
name: Dias, Caroline Prudente
name: Barbosa, Jássica Valente
name: Santos, Evelyn Rafaela de Almeida dos
name: Oliveira, Luiza Thamiris Braga de
name: Santos, Joaquim Gabriel Lima
name: Soares, Monike Karina Macedo
Publisher: name: Zenodo
Year: 2023

description: Este é um guia de bolso voltado para o manejo da sífilis em gestantes e para o tratamento do(s) parceiro (s)
Circular Free Spectrahedra
Creators: name: Evert, Eric
name: Helton, J. William
name: Klep, Igor
name: McCullough, Scott
Publisher: name: arXiv
Year: 2016
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 47L07, 52A05 (Primary), 46N10, 46L07, 32F17 (Secondary)

description: This paper considers matrix convex sets invariant under several types of rotations. It is known that matrix convex sets that are free semialgebraic are solution sets of Linear Matrix Inequalities (LMIs); they are called free spectrahedra. We classify all free spectrahedra that are circular, that is, closed under multiplication by exp(i t): up to unitary equivalence, the coefficients of a minimal LMI defining a circular free spectrahedron have a common block decomposition in which the only nonzero blocks are on the superdiagonal. A matrix convex set is called free circular if it is closed under left multiplication by unitary matrices. As a consequence of a Hahn-Banach separation theorem for free circular matrix convex sets, we show the coefficients of a minimal LMI defining a free circular free spectrahedron have, up to unitary equivalence, a block decomposition as above with only two blocks. This paper also gives a classification of those noncommutative polynomials invariant under conjugating each coordinate by a different unitary matrix. Up to unitary equivalence such a polynomial must be a direct sum of univariate polynomials.
description: 29 pages; includes a table of contents and an index
Small angle neutron scattering contrast variation reveals heterogeneities of interactions in protein gels
Creators: name: Banc, A
name: Charbonneau, C
name: Dahesh, M
name: Appavou, M-S
name: Fu, Z
name: Morel, M-H
name: Ramos, L
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The structure of model gluten protein gels prepared in ethanol/water is investigated by small angle X-ray (SAXS) and neutrons (SANS) scattering. We show that gluten gels display radically different SAXS and SANS profiles when the solvent is (at least partially) deuterated. The detailed analysis of the SANS signal as a function of the solvent deuteration demonstrates heterogeneities of sample deuteration at different length scales. The progressive exchange between the protons (H) of the proteins and the deuteriums (D) of the solvent is inhomogeneous and 60 nm large zones that are enriched in H are evidenced. In addition, at low protein concentration, in the sol state, solvent deuteration induces a liquid/liquid phase separation. Complementary biochemical and structure analyses show that the denser protein phase is more protonated and specifically enriched in glutenin, the polymeric fraction of gluten proteins. These findings suggest that the presence of H-rich zones in gluten gels would arise from the preferential interaction of glutenin polymers through a tight network of non-exchangeable intermolecular hydrogen bonds.
description: Soft Matter, Royal Society of Chemistry, 2016
The Sizes of Globular Clusters as Tracers of Galactic Halo Potentials
Creators: name: Zonoozi, Akram Hasani
name: Rabiee, Malihe
name: Haghi, Hosein
name: Kuepper, Andreas
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present $N$-body simulations of globular clusters, exploring the effect of different galactic potentials on cluster sizes, $r_h$. For various galactocentric distances, $R_G$, we assess how cluster sizes change when we vary the virial mass and concentration of the host galaxy's dark-matter halo. We show that sizes of GCs are determined by the local galactic mass density rather than the virial mass of the host galaxy. We find that clusters evolving in the inner haloes of less concentrated galaxies are significantly more extended than those evolving in more concentrated ones, while the sizes of those orbiting in the outer halo are almost independent of concentration. Adding a baryonic component to our galaxy models does not change these results much, since its effect is only significant in the very inner halo. Our simulations suggest that there is a relation between $r_h$ and $R_G$, which systematically depends on the physical parameters of the halo. Hence, observing such relations in individual galaxies can put a new observational constraint on dark-matter halo characteristics. However, by varying the halo mass in a wide range of $10^{9}\leq M_{vir}/\msun \leq10^{13}$, we find that the $r_h-R_G$ relationship will be nearly independent of halo mass, if one assumes $M_{vir}$ and $c_{vir}$ as two correlated parameters, as is suggested by cosmological simulations.
description: 15 pages, 10 figures, 4 tables, Accepted for publication in ApJ
Erzeugung und Charakterisierung metallischer Nanostrukturen auf n-Si(111):H Einkristalloberflächen
Creators: name: Hugelmann, Martin
Publisher: name: KIT Scientific Publishing
Year: 2004
Subjects: Elektrochemie
Halbleiter
Barrierenhöhe
Raster-Tunnel-Mikroskop
Nanostruktur

description: Zyklische Voltammetrie und elektrochemisches Rastertunnelmikroskop (STM) wurden dazu verwendet die Eignung der Metalle Co, Pb, Cu und Au zur lokalisierten Elektrodeposition auf n-Si(111):H Einkristalloberflächen zu untersuchen. Dabei konnten auf atomar glatten n-Si(111):H Oberflächen abgeschiedene Co, Cu und Au Cluster mittels STM abgebildet werden. Die in situ Charakterisierung elektrochemisch gewachsener makroskopischer Co/n-Si(111):H, Pb/n-Si(111):H, Cu/n-Si(111):H und Au/n-Si(111):H-Kontakte erlaubte das elektronische Kontaktverhalten zu bestimmen. Mit Hilfe der gewonnen Erkenntnisse konnten 0D und 1D Pb-Nanostrukturen auf n-Si(111):H-Oberflächen lokalisiert aufgewachsen werden. Zur in situ Charakterisierung von Nanostrukturen wurden die Distanz-Tunnel-Spektroskopie (DTS) und die Kontakt-Spektroskopie (CS) eingesetzt. Im System Au(111)-Substrat/Au-Spitze erlaubte eine modifizierte DTS-Annäherungsroutine den Abstandsnullpunkt zwischen Oberfläche und STM-Spitze mit einer Genauigkeit von 1/3 Monolage zu bestimmen und Oszillationen der Barrierenhöhe in Abhängigkeit des Abstands zu messen. In situ Strom/Spannungs-Messung an 1D Goldpunktkontakten wiesen auf ein rein ohmsches Verhalten hin. Unterdessen spiegelten CS-Untersuchungen an Au/n-Si(111):H-Nanodioden gleichrichtendes Kontaktverhalten wider, wobei im Vergleich zu makroskopischen Au/n-Si(111):H-Kontakten eine um fünf Dekaden höhere Stromdichte ermittelt werden konnte.
Beitrag zur modellbasierten Regelung von Verbrennungsprozessen
Creators: name: Zipser, Stephan
Publisher: name: KIT Scientific Publishing
Year: 2004
Subjects: Modellierung
Regelungstechnik
Verbrennungsanalyse
Technikumsanlage

description: Verbrennungsprozesse sind meist mit der Emission von Schadstoffen verbunden, weshalb sie möglichst schadstoffarm und energieeffizient geführt werden müssen. Bei den bislang dominierenden primären Brennstoffen sind aufgrund der gleichbleibenden Brennstoffeigenschaften langfristig optimierte Technologien und feste Regelungen einsetzbar. Zunehmend werden jedoch sekundäre Brennstoffe wie Prozessabgase oder Biomasse genutzt. Sie haben stark veränderliche chemisch-physikalische Eigenschaften und bewirken so einen veränderlichen Verbrennungsablauf der schwierig beherrschbar ist. Eine optimale Verbrennung lässt sich dann nur durch eine an den Verbrennungszustand und die Brennstoffe adaptierte modellbasierte Prozessregelung erreichen, die noch nicht Stand der Technik ist. Die Arbeit widmet sich im ersten Schwerpunkt dem modellbasierten Reglungsentwurf. Die theoretische Modellierung und der modellbasierte Entwurf adaptiver Regelungen für die Temperatur und die Sauerstoffkonzentration im Abgas wird am Beispiel einer halbtechnischen Brennkammer für veränderliche Brenngase analysiert. Berücksichtigt wird dabei das für Verbrennungen typische vorhaltbehaftete Regelstreckenverhalten. Der zweite Schwerpunkt bildet die online Messung und die rechnerba-sierte Auswertung von Zustandsgrößen am Beispiel der infrarotbasierten Temperaturmessung bei einem Feststoffbrennbett. Es werden neue Auswerteverfahren entwickelt, die sich u.a. auch bei der Regelung industrieller Verbrennungen bewährt haben.
Die partielle Oxidation von Propan zu Acrylsäure. Bestimmung der Reaktionskinetik und in-situ Charakterisierung des Katalysators unter Betriebsbedingungen
Creators: name: Grißtede, Ina
Publisher: name: KIT Scientific Publishing
Year: 2004
Subjects: Propan
Acrylsäure
Reaktionskinetik
Katalytische Oxidation
Chemische Reaktion / Katalyse
Selektive Oxidation

description: Gegenstand der vorliegenden Arbeit ist die partielle einstufige Oxidation von Propan zu Acrylsäure an einem oxidischen Multikomponentenkatalysator mit der Zusammensetzung Mo1V0,33Nb0,17Te0,25Ox. In der vorliegenden Arbeit stehen zwei Gesichtspunkte im Mittelpunkt: grundlegende Untersuchungen zur Reaktionskinetik und die in-situ Charakterisierung des Katalysators unter Betriebsbedingungen mittels Festkörperelektrolypotentiometrie. Die Reaktion sollte mit Hilfe eines möglichst einfachen Reaktionsnetzes und einfacher kinetischer Ansätze qualitativ und quantitativ beschrieben werden. Dabei war neben dem Einfluss der Temperatur, der Einfluss der Eingangsmolenbrüche von Propan, Sauerstoff und Wasser zu untersuchen und zu quantifizieren. Parallel wurde der Einfluss der Gasphasenzusammensetzung auf die Sauerstoffaktivität unter Betriebsbedingungen untersucht. Dabei wurde erwartet mit Hilfe der simultanen potentiometrischen und kinetischen Messungen Rückschlüsse auf die Wirkungsweise des Katalysators ziehen zu können.
Model based detection and reconstruction of road traffic accidents
Creators: name: Hiemer, Marcus
Publisher: name: KIT Scientific Publishing
Year: 2005
Subjects: Modelling
Side Slip Angle
Accident Reconstruction
Accident Detection

description: This thesis describes the detection and reconstruction of traffic accidents with event data recorders. The underlying idea is to describe the vehicle motion and dynamics up to the stability limit by means of linear and non-linear vehicle models. These models are used to categorize the driving behavior and to freeze the recorded data in a memory if an accident occurs. Based on these data, among others the vehicle trajectory is reconstructed with fuzzy data fusion. The side slip angle which is a crucial quantity describing the vehicle stability is estimated with non-linear state observers and Kalman-Filters. The methodologies presented may lead from accident reconstruction considered here to accident avoidance.
Food Wisdom through Design: A transdisciplinary approach for sustainability transitions
Creators: name: Juri, Silvana
Publisher: name: Carnegie Mellon University
Year: 2023
Subjects: subject: 129999 Built Environment and Design not elsewhere classified
subject: FOS: Civil engineering

description: Food, coalescing a multitude of our societal sustainability challenges, has the ontological power to make or mar the future of life on Earth. While calls to urgently and radically transform our globalized food systems abound, we struggle to discern how such systemic change processes should unfold in praxis, in ways that are appropriate for each context and across multiple scales. The plural and value-full expressions of purpose behind food practices and their transitions open and close different types of future worlds. Our challenge rests not just on knowing what could be done (system knowledge), but on deliberating and acting on why and how it should be realized (praxis). This transdisciplinary orientation demands different knowledges and a pragmatic capacity for moving from judgement to action— practical wisdom. The idiosyncratic and non-linear nature of this task transcends the rational, analytical and universalizable approaches inherited from the Enlightenment and resembles processes of synthesis, creativity, reflection and action akin to design. Emergent design practices that aim to intentionally transition societies to sustainability suggest that it is possible to leverage designerly creative, dialogical, and emergent capacities for imagining and realizing desirable transitions. However, while many frameworks and theories to support intentional food-system reconfigurations exist, there is a lack of case studies that report how these processes are designed and developed. This is even more pronounced in those that integrate design-informed approaches such as Transition Design and that are situated in Global South contexts. Through a three-layered case study developed in the context of Uruguay, this work advances a novel framework that can help design for the complex and fluid nature of these transdisciplinary processes. ‘Food Wisdom’ emerges a novel theory applicable for food system ‘transitions-in-the-making’ from a pluriversal standpoint. The framework reaffirms the contributions of designerly methods and skills, together with the central role that creativity must have when planning for collective processes of learning and change. The six principles that the framework identifies can be used to help nurture wise transitions by design, while still using food’s pedagogical and seductive power for approaching other sustainability-related complex problems.
Magneto--Coriolis waves in a spherical Couette flow experiment
Creators: name: Schmitt, Denys
name: Cardin, Philippe
name: La Rizza, Patrick
name: Nataf, Henri-Claude
Publisher: name: arXiv
Year: 2016
Subjects: subject: Geophysics (physics.geo-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The dynamics of fluctuations in a fast rotating spherical Couette flow experiment in the presence of a strong dipolar magnetic field is investigated in detail, through a thorough analysis of the experimental data as well as a numerical study. Fluctuations within the conducting fluid (liquid sodium) are characterized by the presence of several oscillation modes, identified as magneto-Coriolis (MC) modes, with definite symmetry and azimuthal number. A numerical simulation provides eigensolutions which exhibit oscillation frequencies and magnetic signature comparable to the observation. The main characteristics of these hydromagnetic modes is that the magnetic contribution has a fundamental influence on the dynamical properties through the Lorentz forces, although its importance remains weak in an energetical point of view. Another specificity is that the Lorentz forces are confined near the inner sphere where the dipolar magnetic field is the strongest, while the Coriolis forces are concentrated in the outer fluid volume close to the outer sphere.
description: European Journal of Mechanics - B/Fluids, Elsevier, 2013
Biomasse in Baden-Württemberg - ein Beitrag zur wirtschaftlichen Nutzung der Ressource Holz als Energieträger
Creators: name: Wolff, Folke
Publisher: name: KIT Scientific Publishing
Year: 2005
Subjects: Biomasse
Bioenergie
Energieträger
Holz
Ressourcen

description: Die Nutzung der erneuerbaren Energiequelle Holz bringt ökologische Vorteile mit sich: Es werden Kohlendioxid-Emissionen eingespart und der Verbrauch fossiler Energiequellen verringert. Zugleich muss jedoch mit erhöhten Schadstoffemissionen, dem Problem der Ascheentsorgung sowie häufig mit erhöhten Energiebereitstellungskosten gerechnet werden. In dieser Arbeit werden die Chancen und Risiken der Energieressource Holz am konkreten Beispiel des Landes Baden-Württemberg unter der Berücksichtigung technischer, ökologischer und ökonomischer Gesichtspunkte bewertet, um eine Grundlage zu politischer Entscheidungsunterstützung zu geben. Neben einer Potenzialanalyse wird anhand konkreter Anlagenbeispiele eine Prozesskettenanalyse durchgeführt, in der kumulierter Energieaufwand, Kohlendioxid-Emissionen, Schadstoffemissionen sowie Kosten bilanziert werden. Die Wirtschaftlichkeit und Konkurrenzfähigkeit der energetischen Holznutzung im Gesamtkontext des bestehenden Energiesystems wird anhand einer systemanalytischen Bewertung mit dem Energiesystemmodell PERSEUS-Reg² untersucht. Abgerundet wird das Bild durch die Bilanzierung der Emissionen kanzerogener Spurenstoffe aus Holzfeuerungsanlagen für Baden-Württemberg, sowie die Darstellung der Möglichkeiten eines Beitrags zur Nachhaltigkeit Anhand eines konkreten Projekts im Rahmen der Lokalen Agenda 21.
Elektrochemische Herstellung und Charakterisierung von Nanostrukturen - Entwicklung ultrascharfer STM-Spitzen als Nanoelektroden
Creators: name: Hugelmann, Philipp
Publisher: name: KIT Scientific Publishing
Year: 2005
Subjects: Nanostruktur
Rastertunnelmikroskopie
Elektrochemische Herstellung
STM-Spitzen
Nanoelektroden

description: In der vorliegenden Arbeit wurde ein elektrochemisches Raster-Sonden-Mikroskop dazu benutzt, gezielt Nanostrukturen herzustellen und zu charakterisieren. Das elektrochemische Umfeld bietet gegenüber den sonst angewandten Techniken den Vorteil, dass die Über- und Untersättigung an den beiden Arbeitselektroden frei eingestellt werden kann. Diese Methode erlaubt es lokal Nanostrukturen definierter Größe herzustellen. Mittels einer selbst aufgebauten UHV-Apparatur konnten Präparationstechniken zur reproduzierbaren Herstellung von geometrisch hoch definierten STM-Spitzen für nahezu jedes Metall entwickelt werden. Derart qualitativ hochwertige STM-Spitzen ermöglichten erstmals einen Strommessbereich von 10-6 bis10-12 Ampere abzudecken. Die entwickelten Instrumente konnten zur Untersuchung der Systeme Co bzw. Ni auf Au(111)-Substraten eingesetzt werden. Das Verfahren zur Erzeugung magnetischer Nanostrukturen wurde optimiert und erste spektroskopische Messungen an der Fest-/ Flüssiggrenzfläche konnten durchgeführt werden.
Language structures are unique but comparative grammar is nevertheless useful
Creators: name: Haspelmath, Martin
Publisher: name: Zenodo
Year: 2023

description: That it is useful to compare language structures may sound trivial, but it has sometimes been regarded as problematic or dangerous, because in describing one language, we may be unduly influenced by what we know from some other language(s). In the worst case, we overlook our prejudices and impose a procrustean bed onto another language. Especially the structuralist movement emphasized the uniqueness of each language and made a point of describing each language in its own terms, with its own categories. In this talk, I begin with the observation that the uniqueness perspective is actually well-motivated, and I note that a rigorous approach to language structures can hardly get around it: Describing language structures with general terms (rather than with language-particular terms) may lead to strange or ethnocentric analyses. But on the other hand, it is also clear that languages exhibit many similarities that are worth highlighting, and many linguists find comparative and universalist frameworks satisfying even when they focus on a single language. Perhaps surprisingly, I will propose that the relation between language-particular analyses and the study of cross-linguistic contrasts is best seen not as mutual dependency (let alone as unilateral dependency of analytic proposals on comparative work), but as relative independence: Unique language structures can be analyzed without much concern with universals, and the study of universals does not depend on the correctness of specific analyses. I will provide examples from a range of (mostly European) languages, from a range of different domains of grammar.
Comparison of the Microbiota of the Reproductive Tract and the Mammary Gland of Cows with and without Inflammation Using 16S rRNA Sequencing
Creators: name: O.V. Sokolova, N.?. Bezborodova, ?.V. Bytov, V.D. Zubareva, I.?. Shkuratova, ?.S. Zaitseva, N.?. Martynov
Publisher: name: TuEngr Group
Year: 2022
Subjects: 16S rRNA
metagenomics
Holstein cattle
microbiota
mammary gland
reproductive tract

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 13, 6, 13A6C: 1-12
Mehrphasige Personalentwicklungsplanung für Fertigungssysteme auf Basis des Technologiekalender-Konzeptes
Creators: name: Rottinger, Sven
Publisher: name: KIT Scientific Publishing
Year: 2005
Subjects: Personalplanung
Personalplanung / Strategische Planung
Humanvermögen / Personalentwicklung
Technologiemanagement

description: Aktuelle Erzeugnis- und Fertigungstechnologieentwicklungen müssen möglichst schnell in den Produktionsbetrieben umgesetzt werden, um langfristige Wettbewerbsfähigkeit zu garantieren. Betroffen davon ist vor allem der Fertigungsbereich von Produktionsunternehmen. Gerade hier müssen die personellen und maschinellen Ressourcen permanent an die technologischen Veränderungen angepasst werden. Dabei wird immer wieder betont, dass menschliche Ressourcen im Gegensatz zu den meisten maschinellen vor allem in qualitativer Hinsicht (z.B. hinsichtlich der Beherrschung von Arbeitsaufgaben) flexibel anpassungsfähig sind. Darüber hinaus bleibt der Mensch - zumindest in positiven bis neutralen konjunkturellen und strukturellen Situationen - dem Unternehmen vielfach über einen sehr langen Zeitraum erhalten. Um die Potenziale der menschlichen Ressourcen angemessen in diese Veränderungsprozesse einzubeziehen, wird ein Planungswerkzeug vorgestellt, das eine wirkungsvolle Unterstützung der langfristigen Personalentwicklung darstellt. Die Funktionsweise des entwickelten Verfahrens wird anhand zweier praktischer Fälle vorgestellt.
Skin Disease Stratification based on Regression with Fuzzy C-mean Adversarial Tunicate Algorithm (RFAT)
Creators: name: Ravinder Reddy Baireddy, R.Nagaraja
Publisher: name: TuEngr Group
Year: 2022
Subjects: Cluster algorithm
Benchmark function
Stratification of skin disorder
Adversarial Tunicate Swarm Algorithm (ATSA)
Mean Square Deviation (MSD)
Dunn Index (DI)
Tunicate Swarm Algorithm (TSA)
Fuzzy clustering algorithm
En-ABC
Oppositional Tunicate Swarm Algorithm (OPTSA)
ANN, LR-HID, ML-IDS
Synthetic dataset
NIB (IBRL)
NSL-KDD dataset.

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 13, 6, 13A6D: 1-15
Social Capital and Competitive Advantage: Empirical Evidence from Travel and Tourism Industries in Saudi Arabia
Creators: name: Al-Hazmi, Nabil Mohemmed
Publisher: name: TuEngr Group
Year: 2022
Subjects: Competitive Advantage
Social Capital
Tourism industry
internal marketing

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 13, 6, 13A6E: 1-8