cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Le paysage, une démarche de projet pour accompagner la transition énergétique des territoires
Creators: name: Giorgis, Sebastien
Publisher: name: University of Massachusetts Amherst
Year: 2019

description: Comme toutes grandes transformations économiques, culturelles et techniques, la transition énergétique transforme les territoires, générant de nouveaux paysages qui peuvent parfois heurter certains et en lesquels les habitants peuvent ne plus se reconnaitre.

Les questions contemporaines auxquelles sont confrontées les collectivités, les acteurs économiques, les associations ou les services des États, résident dans la manière de concilier ces transformations territoriales rendues nécessaires et urgentes face aux changements climatiques en cours (par le développement des énergies renouvelables par exemple) tout en en préservant les qualités intrinsèques : produire des paysages contemporains de qualité.

Mais sur quels fondements théoriques et pratiques pouvons-nous nous appuyer pour nous assurer que l’on met en œuvre des projets de transformation des paysages actuels qui répondent bien à des « objectifs de qualité paysagère ». L’exposé tendra à présenter une démarche de projet de paysage appuyée sur la définition du paysage telle que proposée par la Convention européenne du paysage ( Convention de Florence, 2000) : « Paysage : partie de territoire telle que perçue par les populations »

Les trois termes de cette définition constituent la base de cette méthode de projet pour un paysage de la transition énergétique de qualité :

- la « PARTIEde territoire » représente la dimension physique du paysage, sa morphologie particulière héritée de la géographie et de l’histoire. C’est la part du paysage que l’on désigne, dans sa diversité, sous le vocable « d’Unité de Paysage »

- « telle que perçue » fait état de la dimension sensible (c’est à dire telle que perçue par les sens) de la notion de paysage, et plus particulièrement, celle du sens de la vue.

- « PARLES populations » : nous entrons ici dans la part dite « subjective » (liée aux « sujets », dans leur diversité) du paysage, les deux autres dimensions étant tout à fait objectivables.

Ces trois niveaux d’analyse sont mobilisés pour concevoir tout projet contemporain fondé sur les caractéristiques paysagères d’un territoire, sur ses valeurs et sur ses enjeux culturels et sociaux.
title: Global Entrepreneurship Monitor. Unternehmensgründungen im weltweiten Vergleich : Länderbericht Deutschland 2008
title: Global Entrepreneurship Monitor Unternehmensgründungen im weltweiten Vergleich: Länderbericht Deutschland 2008
titleType: AlternativeTitle
title: Global Entrepreneurship Monitor Unternehmensgründungen im weltweiten Vergleich: Länderbericht Deutschland 2008
titleType: AlternativeTitle
Creators: name: Sternberg, Rolf
name: Brixy, Udo
name: Hessels, Jolanda
name: Hundt, Christian
name: Stüber, Heiko
Publisher: name: Hannover ; Nürnberg : Institut für Wirtschafts- und Kulturgeographie, Leibniz Universität Hannover ; Institut für Arbeitsmarkt- und Berufsforschung (IAB)
Year: 2009
Subjects: subject: Entrepreneurship
subject: Global Entrepreneurship Monitor
subject: Gründungen
subject: Unternehmensgründungen
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft

description: Der Länderbericht Deutschland im Rahmen des Global Entrepreneurship Monitors gibt seit 1999 jährlich Auskunft über die Gründungsaktivitäten, -motive und -einstellungen in der deutschen Bevölkerung. Er wird vom deutschen Team des GEM unter Leitung von Prof. Rolf Sternberg herausgegeben.
description: The country report of Germany of the Global Entrepreneurship Monitor (GEM) provides a yearly analysis of entrepreneurship activities, motives, and attitudes in the German population, since 1999. It is published by the German team of the GEM under the lead of Prof. Rolf Sternberg.
title: Environnement du patrimoine rural
Creators: name: Cornu, Claire
Publisher: name: University of Massachusetts Amherst
Year: 2019

description: En fournissant la chimie à l’agriculture, les matériaux pour la construction, et en produisant la mécanisation des cultures comme celles des terrassements, l’industrie des « trente glorieuses » en France effaçait des siècles de pratiques et d’organisation des espaces de vie et de travail, qui optimisaient les ressources naturelles locales et humaines. La maçonnerie en pierre sèche, son agriculture en terrasse, son élevage en enclos, ses cabanes des champs, ses espaces d’accompagnement des jardins, des maisons, des villages, des rivières, des chemins, des routes, sombraient dès lors dans la désuétude. Lorsqu’en 1999 nous avons démarré cette démarche de renaissance d’une filière professionnelle, les terrasses étaient abandonnées, les pierres des enclos concassées, le métier de murailler avait disparu. C’est lors d’inondations meurtrières (comme celle de Vaison la romaine :47 morts et 34 disparus en 1992) que les terrasses fossilisées des collines environnantes, dévorées par une urbanisation insouciante, ont pointé du doigt le rôle majeur de ces murs drainants pour lutter contre l’érosion. Ces ouvrages subtils pour apprivoiser la pente, gérer le ruissellement collinaire, générer un microclimat propice aux cultures du fait de l’inertie thermique des pierres, constituent un écosystème pour la biodiversité. Ils sont des solutions alternatives modernes. Notre attachement à nos racines revendique le maintien de ces paysages uniques, de cet art paysan et de cette pratique durable, non délocalisable, non industrialisable, qui repositionne l’homme au cœur du processus. Initiée en France en 2011, l’Art de la construction en pierre sèche, savoir-faire et techniques, est une candidature à huit pays portée par Chypre, qui vient d’entrer dans la Liste représentative du Patrimoine culturel immatériel de l’humanité (UNESCO 28 novembre 2018). Forts de cette distinction, nous souhaitons convaincre d’autres pays de la pertinence de la pierre sèche et leur transmettre savoirs, outils et méthodes pour reconsidérer ces pratiques constructives et agricoles, comme sources de qualités pour leur paysage et leur environnement.
title: Le paysage rural patrimonial, outil et projet au service de la lutte contre le réchauffement climatique
Creators: name: Ambroise, Regis
Publisher: name: University of Massachusetts Amherst
Year: 2019

description: This intervention makes reference to the paragraph of resolution 19GA 2017/30 of the International Council of Monuments and Sites stating that "the 19th General Assembly of ICOMOS ... welcomes the adoption of the Paris Agreement and encourages all members of the ICOMOS to strengthen their efforts to support its implementation and to identify responses that build on heritage or cultural landscapes ... " She takes the example of how terrace landscapes have been approached in recent years in three different situations: in France, in Guizhou in China and in the Priorat in Spain.

In France, farms growing on terraces according to traditional systems served as a reference when it was necessary to define the principles of agroecology adapted to the challenge of sustainable development and global warming.

In China, during student exchanges, Guizhou minority farmers were surveyed to understand the principles of spatial organization that allow them to feed a large population without the use of chemical inputs or fossil resources.

In the Priorat region of Catalonia, winemakers have succeeded, by taking inspiration from the knowledge of their traditional terraces, to invent new ways of producing and to train the whole population to define and follow the values of a sustainable and harmonious development adapted to the singularities of their situation.

Thus these terraces territories "rely on heritage or cultural landscapes given the need for a rapid and massive reduction of emissions, in order to keep the rise in temperatures well below 2 ° C". They demonstrate that attention must be paid to the preservation or evolution of techniques as much as to the forms of social organization at the origin of this heritage.
Groups in which every non-cyclic subgroup contains its centralizer
Creators: name: Delizia, Costantino
name: Jezernik, Urban
name: Moravec, Primož
name: Nicotera, Chiara
Publisher: name: arXiv
Year: 2013
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20D15, 20F16, 20E32

description: We study groups having the property that every non-cyclic subgroup contains its centralizer. The structure of nilpotent and supersolvable groups in this class is described. We also classify finite $p$-groups and finite simple groups with the above defined property.
description: 10 pages
title: Global Entrepreneurship Monitor. Unternehmensgründungen im weltweiten Vergleich : Länderbericht Deutschland 2009
title: Global Entrepreneurship Monitor Unternehmensgründungen im weltweiten Vergleich: Länderbericht Deutschland 2009
titleType: AlternativeTitle
Creators: name: Sternberg, Rolf
name: Brixy, Udo
name: Hundt, Christian
Publisher: name: Hannover ; Nürnberg : Institut für Wirtschafts- und Kulturgeographie, Leibniz Universität Hannover ; Institut für Arbeitsmarkt- und Berufsforschung (IAB)
Year: 2010
Subjects: subject: Entrepreneurship
subject: Global Entrepreneurship Monitor
subject: Gründungen
subject: Unternehmensgründungen
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft

description: Der Länderbericht Deutschland im Rahmen des Global Entrepreneurship Monitors gibt seit 1999 jährlich Auskunft über die Gründungsaktivitäten, -motive und -einstellungen in der deutschen Bevölkerung. Er wird vom deutschen Team des GEM unter Leitung von Prof. Rolf Sternberg herausgegeben.
description: The country report of Germany of the Global Entrepreneurship Monitor (GEM) provides a yearly analysis of entrepreneurship activities, motives, and attitudes in the German population, since 1999. It is published by the German team of the GEM under the lead of Prof. Rolf Sternberg.
Solid-phase assisted synthesis of glycoconjugates, and synthesis of 15N-labelled aminoglycosides
Creators: name: Jaunzems, Janis
Publisher: name: Hannover : Universität
Year: 2003
Subjects: subject: Glycoconjugates
subject: glycosidation
subject: polymer-assisted synthesis
subject: olefin metathesis macrocyclisation
subject: aminoglycosides
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
The magnetization plateaus of the ferro and anti-ferro spin-1 classical models with $S_z^2$ term
Creators: name: de Souza, S. M.
name: Thomaz, M. T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study in detail the exact thermodynamics of the one-dimensional standard and staggered spin-1 Ising models with a single-ion anisotropy term in the presence of a longitudinal magnetic field at low temperatures. The results are valid for the ferromagnetic and anti-ferromagnetic (AF) models and for positive and negative values of the crystal field for $T>0$. Although the excited states of the ferro and anti-ferro models are highly degenerate, we show that the temperature required for reaching the first excited state in the classical spin-1 ferro model gives a scale of temperature that permits fitting the z-component of the magnetization only by the contribution of two ground states of the model. This approximation is not true for the equivalent AF function due to the fact that the AF model is gapless along the lines separating the phases in its phase diagram at T=0. We relate the number of plateaus in the magnetization of each model to their respective phase diagrams at T=0. The specific heat per site of the AF model distinguishes, at low temperature, the transitions $\mbox{A} \rightleftharpoons \mbox{E}$ and $\mbox{G} \rightleftharpoons \mbox{E}$ as the external magnetic field is varied. The exact Helmholtz free energy of the classical spin-1 model is mapped onto the equivalent function of the ionic limit of the 1D extended Hubbard model by proper transformations.
Performance Analysis of Heterogeneous Feedback Design in an OFDMA Downlink with Partial and Imperfect Feedback
Creators: name: Huang, Yichao
name: Rao, Bhaskar D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Current OFDMA systems group resource blocks into subband to form the basic feedback unit. Homogeneous feedback design with a common subband size is not aware of the heterogeneous channel statistics among users. Under a general correlated channel model, we demonstrate the gain of matching the subband size to the underlying channel statistics motivating heterogeneous feedback design with different subband sizes and feedback resources across clusters of users. Employing the best-M partial feedback strategy, users with smaller subband size would convey more partial feedback to match the frequency selectivity. In order to develop an analytical framework to investigate the impact of partial feedback and potential imperfections, we leverage the multi-cluster subband fading model. The perfect feedback scenario is thoroughly analyzed, and the closed form expression for the average sum rate is derived for the heterogeneous partial feedback system. We proceed to examine the effect of imperfections due to channel estimation error and feedback delay, which leads to additional consideration of system outage. Two transmission strategies: the fix rate and the variable rate, are considered for the outage analysis. We also investigate how to adapt to the imperfections in order to maximize the average goodput under heterogeneous partial feedback.
description: To appear in IEEE Trans. on Signal Processing
Sedum purpureum L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: L. purpureum L. Cat. 289. Bisher bekannte oberste Stelle die alte TissiEREsche: Gr. St.Bernhard, «dans les terre-pleins (jar- dins) le long de l'aqueduc, pres de l'hospice», ohne Höhe (Tissiere, Guide, S.75 [1868]); Höhe des Hospizes: 2469 m. Ob hier noch?
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Solubility of H2O and CO2 and diffusion of CO2 in rhyolitic melts : an experimental study = Löslichkeit von H2O und CO2 und Diffusion von CO2 in rhyolitischen Schmelzen : eine experimentelle Untersuchung
Creators: name: Tamic, Nathalie
Publisher: name: Hannover : Universität
Year: 2002
Subjects: subject: Rhyolitic melts
subject: solubility
subject: diffusion
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: [no abstract]
Somatic embryogenesis and transformation studies in Schlumbergera and Rhipsalidopsis
Creators: name: Al-Ramamneh, Ezz Al-Dein Muhammed
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2006
Subjects: subject: Christmas cactus
subject: Easter cactus
subject: genetic transformation
subject: transgene
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin

description: [no abstract]
Pressure suppression of spin-density-wave gap in the optical conductivity of SrFe2As2
Creators: name: Okamura, H.
name: Shoji, K.
name: Miyata, M.
name: Sugawara, H.
name: Moriwaki, T.
name: Ikemoto, Y.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Optical reflectance R(w) of a pressure-induced superconductor SrFe2As2 has been measured under external pressure to 6 GPa and at temperatures to 8 K. Optical conductivity s(w) has been derived from the measured R(w). At ambient pressure, in the antiferromagnetic state below T_N=198 K, a pronounced feature develops in s(w) due to the opening of a spin density wave (SDW) gap, as already reported in the literature. With increasing pressure, the SDW gap feature in s(w) is progressively suppressed. At 4 GPa, where the sample is superconducting, the SDW gap feature in s(w) is strongly reduced than that at ambient pressure, but is still clearly observed. At 6 GPa, the SDW gap is completely suppressed. The pressure evolutions of the SDW gap magnitude and the spectral weight closely follow the pressure evolution of T_N.
description: 6 pages, 4 figures
Squeezed light and laser interferometric gravitational wave detectors
Creators: name: Chelkowski, Simon
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2007
Subjects: subject: Gravitational wave detector
subject: OPA
subject: frequency-dependent squeezed light
subject: squeezed-light-enhanced dual-recycled Michelson interferometer
subject: low-frequency squeezing
subject: GEO-HF
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Spectral triples on Carnot manifolds
Creators: name: Hasselmann, Stefan
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2014
Subjects: subject: Spectral triple
subject: Carnot-Carathéodory metric
subject: hypoellipticity
subject: Spektrales Tripel
subject: Carnot-Carathéodory Metrik
subject: Hypoelliptizität
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: [no abstract]
Condensed Matter Applications of Entanglement Theory
Creators: name: Schuch, Norbert
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: These are lecture notes from the 44th IFF Spring School "Quantum Information Processing" in Juelich, discussing applications of entanglement theory in condensed matter. The focus of the notes is on tensor network states, in particular Matrix Product States (MPS) and Projected Entangled Pair States (PEPS), which provide an efficient description of many-body states based on their entanglement structure; both numerical and analytical aspects of tensor networks are being covered. The notes close with a brief introduction to quantum complexity, which allows to assess the limitations to our ability to simulate quantum many-body systems.
description: Lecture notes for the 44th IFF Spring School "Quantum Information Processing" in Juelich, 2013. 29 pages
Anatomical MRI with an atomic magnetometer
Creators: name: Savukov, I.
name: Karaulanov, T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Medical Physics (physics.med-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Ultra-low field (ULF) MRI is a promising method for inexpensive medical imaging with various additional advantages over conventional instruments such as low weight, low power, portability, absence of artifacts from metals, and high contrast. Anatomical ULF MRI has been successfully implemented with SQUIDs, but SQUIDs have the drawback of cryogen requirement. Atomic magnetometers have sensitivity comparable to SQUIDs and can be in principle used for ULF MRI to replace SQUIDs. Unfortunately some problems exist due to the sensitivity of atomic magnetometers to magnetic field and gradients. At low frequency, noise is also substantial and a shielded room is needed for improving sensitivity. In this paper, we show that at 85 kHz, the atomic magnetometer can be used to obtain anatomical images. This is the first demonstration of any use of atomic magnetometers for anatomical MRI. The demonstrated resolution is 1.1x1.4 mm2 in about six minutes of acquisition with SNR of 10. Some applications of the method are discussed. With several measures it is also possible to increase sensitivity to reach resolution 1x1 mm2, which is typical in medical imaging.
Dicke Quantum Spin and Photon Glass in Optical Cavities: Non-equilibrium theory and experimental signatures
Creators: name: Buchhold, Michael
name: Strack, Philipp
name: Sachdev, Subir
name: Diehl, Sebastian
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the context of ultracold atoms in multimode optical cavities, the appearance of a quantum-critical glass phase of atomic spins has been predicted recently. Due to the long-range nature of the cavity-mediated interactions, but also the presence of a driving laser and dissipative processes such as cavity photon loss, the quantum optical realization of glassy physics has no analog in condensed matter, and could evolve into a "cavity glass microscope" for frustrated quantum systems out-of-equilibrium. Here we develop the non-equilibrium theory of the multimode Dicke model with quenched disorder and Markovian dissipation. Using a unified Keldysh path integral approach, we show that the defining features of a low temperature glass, representing a critical phase of matter with algebraically decaying temporal correlation functions, are seen to be robust against the presence of dissipation due to cavity loss. The universality class however is modified due to the Markovian bath. The presence of strong disorder leads to an enhanced equilibration of atomic and photonic degrees of freedom, including the emergence of a common low-frequency effective temperature. The imprint of the atomic spin glass physics onto a "photon glass" makes it possible to detect the glass state by standard experimental techniques of quantum optics. We provide an unambiguous characterization of the superradiant and glassy phases in terms of fluorescence spectroscopy, homodyne detection, and the temporal photon correlation function $g^{(2)}(τ)$.
description: 25 pages, 12 figures
title: Integrative Management Planning Framework for Sustainable Development of Sub-Saharan African World Heritage Cultural Landscapes
Creators: name: Malijani, Oris
Publisher: name: University of Massachusetts Amherst
Year: 2019

description: Sub-Saharan African World Heritage cultural landscapes are adversely impacted by various development pressures, which calls for a holistic and integrated approach in their management. Coordinating and harmonizing development in World Heritage cultural landscapes is one of the most common challenges affecting the management and conservation of most Sub-Saharan African World Heritage properties. A study was carried out as part of a PhD in Heritage Studies research programme using two case studies Mount Mulanje Cultural Landscape in Malawi, a site on the UNESCO tentative list; and Mapungubwe World Heritage Cultural landscape of South Africa. The main aim of the research was to contribute to the methodological gap in cultural landscape planning by developing and applying an integrated strategic management planning methodological framework which has proposed strategic solutions to challenges faced when managing Sub-Saharan African World Heritage cultural landscapes that are threatened by various development activities. The study used two case studies as an effective comparative research strategy in the investigation of the conflicting issues of development pressure against the conservation of the significant cultural and natural attributes of cultural landscapes. The developed framework has provided a comprehensive level of technical support for decision-making in the management and conservation of Sub-Saharan African World Heritage cultural landscapes. The methodological tool has proposed long-term and holistic management planning strategies of integrating development into the management planning processes of African cultural landscapes. In order to facilitate the potential integration of cultural landscape conservation and development, the framework has suggested that all key stakeholders need to be committed to a collaborative approach to land use planning, decision-making, natural and cultural resource management, socio-economic development and stakeholder engagement.
State-insensitive dynamic polarizabilities of the polar molecules NaK and RbCs in optical lattices
Creators: name: She, Wuying
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2020
Subjects: subject: State-insensitive
subject: heteronuclear molecules
subject: rotational states
subject: optical lattices
subject: heteronukleare Moleküle
subject: Rotationszustände
subject: optische Gitter
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: In this thesis, we determine the formalism of the dynamic polarizability of diatomic molecules. This approach is then applied to investigate the eﬀect of a DC ﬁeld on the dynamic polarizability of a few rotational states of RbCs and NaK molecules at a wavelength of 1064 nm. We demonstrate the dependence of the dynamic polarizability on the DC ﬁeld strength and ﬁnd that at a certain DC ﬁeld strength, two lowest rotational states of the molecules have identical dynamic polarizabilities. This magic ﬁeld strength is veriﬁed to be independent of the light polarization. Besides this, we also investigate the angle dependence of the polarizabilities when the light is linearly polarized as a function of the relative angle with respect to the DC ﬁeld. There exists a magic angle which is independent of the DC ﬁeld strength. This state-insensitive polarizabilities ﬁnding can provide great advantages to the development of experiments where polar molecules trapped in optical lattices are ideal tools for quantum computing and simulations.
title: Estimating Total and Bioavailable Nutrient Loading to Utah Lake from the Atmosphere
Creators: name: Brahney, Janice
Publisher: name: Utah State University
Year: 2019

description: Anthropogenic activities have led to increases in the emission, atmospheric transport, and deposition of key nutrients. In addition, climate change along with anthropogenic soil disturbance has led to recent increases in the mobilization and transport of soils and other particles through the atmosphere, collectively described here as dust. These increased emissions have led to growing interest and concern over the composition of atmospheric deposition and total loading of nutrients to aquatic systems. In the last several decades, much effort has been directed towards the measurement and modeling of nitrogen deposition through wet and aerosol deposition. Less is known about the capacity for regional dusts to transport nutrients in meaningful quantities in space and time. This paper summarizes the state of knowledge on dust deposition, composition, and potential effects on aquatic ecosystems. More specifically, this paper focuses on the potential for atmospheric aerosol, dust, and wet deposition to contribute phosphorus and nitrogen to Utah Lake in Provo, Utah. As part of this effort this paper, a) summarizes recent estimates of dust deposition from Utah and elsewhere in the Great Basin, b) summarizes current knowledge on total and soluble phosphorus loading from dusts, and c) summarizes atmospheric deposition rates of nitrogen from wet, gaseous, and particulate sources. The above information is used to generate estimates of total (urban + regional) nutrient loading to Utah Lake based on local bootstrapped measurements and three attenuation scenarios. Based on the compiled information of observed deposition rates, 80% of estimates fell between 2 and 9 metric tons of Total Phosphorus (TP) deposition to Utah Lake per year. The annual deposition rate of the bioavailable fraction, here defined as the soluble plus organic fraction of phosphorus, is estimated at a minimum of 0.5 to a maximum of 7.9 metric tons, with probable deposition rates between 2-2.5 metric tons per year. Because there is an interest in determining the maximum possible deposition flux of P to Utah Lake, we determined the maximum loads based on the maximum measured deposition rates and phosphorus concentrations applied over the full year, and, extended the urban zone of influence to 2 and 3 times that observed at other large lakes as part of these estimates. Total nitrogen loading is estimated between 153 and 288 metric tons per year base on measurements and models produced elsewhere. Recommendations on best practices for the measurement of particulate deposition onto a large lake are also provided.
Complexity of Creative Telescoping for Bivariate Rational Functions
Creators: name: Bostan, Alin
name: Chen, Shaoshi
name: Chyzak, Frédéric
name: Li, Ziming
Publisher: name: arXiv
Year: 2013
Subjects: subject: Symbolic Computation (cs.SC)
subject: FOS: Computer and information sciences
subject: 33F10

description: The long-term goal initiated in this work is to obtain fast algorithms and implementations for definite integration in Almkvist and Zeilberger's framework of (differential) creative telescoping. Our complexity-driven approach is to obtain tight degree bounds on the various expressions involved in the method. To make the problem more tractable, we restrict to bivariate rational functions. By considering this constrained class of inputs, we are able to blend the general method of creative telescoping with the well-known Hermite reduction. We then use our new method to compute diagonals of rational power series arising from combinatorics.
description: 8 pages
Squeezed light for gravitational wave astronomy
Creators: name: Vahlbruch, H.
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2008
Subjects: subject: Gravitational wave detector
subject: squeezed light generation
subject: low frequency squeezing
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Stabilization of flows through porous media
Creators: name: Feng, Zhaoyong
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2006
Subjects: subject: Moving boundaries
subject: flow through porous media
subject: Darcy's law
subject: fully nonlinear evolution equations
subject: analytic semigroups
subject: maximal regularity
subject: stability of equilibria
subject: stabilization
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Recursion Relations for Tree-level Amplitudes in the SU(N) Non-linear Sigma Model
Creators: name: Kampf, Karol
name: Novotny, Jiri
name: Trnka, Jaroslav
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is well-known that the standard BCFW construction cannot be used for on-shell amplitudes in effective field theories due to bad behavior for large shifts. We show how to solve this problem in the case of the SU(N) non-linear sigma model, i.e. non-renormalizable model with infinite number of interaction vertices, using scaling properties of the semi-on-shell currents, and we present new on-shell recursion relations for all on-shell tree-level amplitudes in this theory.
description: 4 pages, 2 figures
A new scheme of signature extraction for iris authentication
Creators: name: Akrout, Belhassen
name: Kallel, Imen Khanfir
name: Amar, Chokri Ben
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Iris recognition, a relatively new biometric technology, has great advantages, such as variability, stability and security, thus is the most promising for high security environment. Iris recognition is proposed in this report. We describe some methods, the first one is based on grey level histogram to extract the pupil, the second is based on elliptic and parabolic HOUGH transformation to determinate the edge of iris, upper and lower eyelids, the third we used 2D Gabor Wavelets to encode the iris and finally we used the Hamming distance for authentication.
description: 7 pages, 13 figures,International Multi-Conference on Systems Signals and Devices
X-ray quantum optics with Mössbauer nuclei embedded in thin film cavities
Creators: name: Heeg, K. P.
name: Evers, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: A promising platform for the emerging field of x-ray quantum optics are Mössbauer nuclei embedded in thin film cavities probed by near-resonant x-ray light, as used in a number of recent experiments. Here, we develop a quantum optical framework for the description of experimentally relevant settings involving nuclei embedded in x-ray waveguides. We apply our formalism to two settings of current experimental interest based on the archetype Mössbauer isotope 57Fe. For present experimental conditions, we derive compact analytical expressions and show that the alignment of medium magnetization as well as incident and detection polarization enable the engineering advanced quantum optical level schemes. The model encompasses non-linear and quantum effects which could become accessible in future experiments.
description: 13 pages, 6 figures
Die Terra-Sigillata-Töpferei von Nürtingen, Lkr. Esslingen
Creators: name: Luik, Martin
name: Beck, Erwin
name: Daszkiewicz, Małgorzata
name: Schneider, Gerwulf
Publisher: name: Fundberichte aus Baden-Württemberg
Year: 2016

description: [nicht vorhanden / not available]
description: Fundberichte aus Baden-Württemberg, Bd. 32, Nr. 2 (2012): Fundberichte aus Baden-Württemberg
Correlation-stability approach to elasticity mapping in OCT: comparison with displacement-based mapping and \textit{in vivo} demonstrations
Creators: name: Zaitsev, Vladimir Yu.
name: Matveev, Lev A.
name: Gelikonov, Grigory V.
name: Matveyev, Aleksandr L.
name: Gelikonov, Valentin M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Medical Physics (physics.med-ph)
subject: Biological Physics (physics.bio-ph)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: A variant of compression optical coherence elastography for mapping relative tissue stiffness is reported. Unlike conventionally discussed displacement-based (DB) elastorgaphy, in which the decrease in the cross-correlation is a negative factor causing errors in mapping displacement and strain fields, we propose to intentionally use the difference in the correlation stability (CS) for deformed tissue regions with different stiffness. We compare the parameter ranges (in terms of noise-to-signal ratio and strain) in which the conventional DB- and CS-approaches are operable. It is shown that the CS approach has such advantages as significantly wider operability region in terms of strain and is more tolerant to noises. This is favorable for freehand implementation of this approach. Examples of simulated and real CS-based elastographic OCT images are given.
description: 4 pages, including 3 pages of the body text and 1 page with full-form references, 3 figures
Slow dynamics of spin pairs in random hyperfine field: Role of inequivalence of electrons and holes in organic magnetoresistance
Creators: name: Roundy, R. C.
name: Raikh, M. E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: In an external magnetic field B, the spins of the electron and hole will precess in effective fields b_e + B and b_h + B, where b_e and b_h are random hyperfine fields acting on the electron and hole, respectively. For sparse "soft" pairs the magnitudes of these effective fields coincide. The dynamics of precession for these pairs acquires a slow component, which leads to a slowing down of recombination. We study the effect of soft pairs on organic magnetoresistance, where slow recombination translates into blocking of the passage of current. It appears that when b_e and b_h have identical gaussian distributions the contribution of soft pairs to the current does not depend on B. Amazingly, small inequivalence in the rms values of b_e and b_h gives rise to a magnetic field response, and it becomes progressively stronger as the inequivalence increases. We find the expression for this response by performing the averaging over b_e, b_h analytically. Another source of magnetic field response in the regime when current is dominated by soft pairs is inequivalence of the g-factors of the pair partners. Our analytical calculation indicates that for this mechanism the response has an opposite sign.
description: 16 pages, 8 figures
Stochastic forecasting in demography and social insurance
Creators: name: Vanella, Patrizio
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2020
Subjects: subject: Demography
subject: FOS: Sociology
subject: Social Insurance
subject: Forecasting
subject: Stochastics
subject: Multivariate Methods
subject: Time Series Analysis
subject: Demografie
subject: Sozialversicherung
subject: Prognostik
subject: Stochastik
subject: Multivariate Methoden
subject: Zeitreihenanalyse
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft

description: Die Prognose demografischer Prozesse ist in vielen Bereichen von großer Bedeutung, um sich auf diese Entwicklungen im Rahmen von Planungsprozessen frühzeitig einstellen zu können. In den meisten Fällen werden dafür anstelle echter Prognosen deterministische Projektionen herangezogen. Diese unterliegen einigen Limitationen, welche im Verlaufe dieser Dissertation diskutiert werden. Die Arbeit stellt ein Rahmenwerk für die stochastische Prognose demografischer Prozesse und darauf aufbauender Probleme, wie die Versicherungsnachfrage, dar. Der Fokus der Arbeit liegt dabei auf der demografischen Entwicklung in Deutschland und ihrer Konsequenzen für die gesetzliche Rentenversicherung und die Pflegeversicherung. Der Beitrag besteht aus sie-ben Kapiteln, die für sich genommen wissenschaftliche Papiere darstellen, die individuell entweder bereits in wissenschaftlichen Fachzeitschriften oder –büchern publiziert wurden o-der sich derzeit im Begutachtungsverfahren befinden. Nichtsdestotrotz ist die Zusammenstel-lung und Anreihung der einzelnen Kapitel dergestalt, dass diese schlüssig verbunden und lo-gisch aufeinander aufbauend sind. Die Zielgruppen dieser Arbeit sind sowohl Bevölkerungswissenschaftler und Forscher in an-grenzenden Disziplinen, als auch Abteilungen in Statistikämtern oder Lebensversicherungsun-ternehmen, die Prognosen für die Bevölkerung oder Subpopulationen erstellen. Insbesondere sollen den Lesern die beiden Primärmethoden Hauptkomponentenanalyse und Zeitreihenana-lyse nähergebracht werden, die außerhalb der akademischen Forschung selten praktische An-wendung finden, insbesondere für Prognosen. Das mag darauf zurückzuführen sein, dass Mo-dellierer die Methoden entweder überhaupt nicht kennen oder ihnen die praktische Erfahrung in der Anwendung dieser auf reale Daten fehlt. Die Dissertation adressiert diese Probleme, da das besondere Augenmerk auf einer verständli-chen und nachvollziehbaren Illustration der methodischen Anwendung und der Betonung der Anwendungsmöglichkeiten liegt, ohne dass die Arbeit zu technisch wird. Dennoch dürften die konkreten Prognosen auch für diejenigen von Interesse sein, die an der zukünftigen Ent-wicklung der Bevölkerungsstruktur und der daraus entstehenden Herausforderungen für das Sozialversicherungssystem interessiert sind. Auch Prognostiker aus anderen Disziplinen könn-ten an der Dissertation Gefallen finden, da viele Probleme in der Prognostik realer Prozesse genereller Natur sind und nicht nur in der Demografie auftreten.
Stochastic mortality modelling with cointegrated vector autoregressive processes and characterizations of logistic-type hazard rate distributions
Creators: name: Salfeld, Thomas
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2019
Subjects: subject: stochastic mortality modelling
subject: cointegrated vector autoregressive processes
subject: logistic hazard rate functions
subject: stochastische Mortalitätsmodelle
subject: kointegrierte vektorautoregressive Prozesse
subject: logistische Hazard-Raten-Modelle
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: This thesis is devoted to stochastic mortality modelling. The first part considers the popular family of GAPC models and identifies several conceptual difficulties of most well-established models. The GAPC models are embedded in the framework of generalized linear models. However, the vast majority of the literature only considers the canonical link function and by that omits an important modelling factor. In our study, we also incorporate a non-canonical link function and demonstrate its advantages on the fitting performance. While the first part focuses on the static component of the modelling approach, where the main objective is to identify the influencing factors that drive the mortality structure, the second part is devoted to the dynamical part of the modelling approach. For the proposed model we identify appropriate multivariate stochastic processes for the dynamics of the involved stochastic factors. We study cointegration relations between the individual components and compare the forecasting performance with the common GAPC approach. The last part of this thesis can be considered independently of the previous content. There, we provide an extensive characterization of the lifetime distribution which is induced by logistic-type hazard rates of the proposed Kannisto model. Furthermore, we reveal multiple connections to other well-known lifetime distributions.
Spectral Analysis by the Method of Consistent Constraints
Creators: name: Prokof'ev, Nikolay
name: Svistunov, Boris
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Two major challenges of numeric analytic continuation---restoring the spectral density, $s(ω)$, from the corresponding Matsubara correlator, $g(τ)$---are (i) producing the most smooth/featureless answer for $s(ω)$ without compromising the error bars on $g(τ)$ and (ii) quantifying possible deviations of the produced result from the actual answer. We introduce the method of consistent constraints that solves both problems.
description: 4 pages, 5 figures
Effect of Self-Magnetic Fields on the Nonlinear Dynamics of Relativistic Electron Beam with Virtual Cathode
Creators: name: Hramov, A. E.
name: Kurkin, S. A.
name: Koronovskii, A. A.
name: Filatova, A. E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The report is devoted to the results of the numerical study of the virtual cathode formation conditions in the relativistic electron beam under the influence of the self-magnetic and external axial magnetic fields. The azimuthal instability of the relativistic electron beam leading to the formation of the vortex electron structure in the system was found out. This instability is determined by the influence of the self-magnetic fields of the relativistic electron beam and it leads to the decrease of the critical value of the electron beam current (current when the non-stationary virtual cathode is formed in the drift space). The typical dependencies of the critical current on the external uniform magnetic field value were discovered. The effect of the beam thickness on the virtual cathode formation conditions was also analyzed.
description: 19 pages, 8 figures
Multiple non-negative solutions of systems with coupled nonlinear BCs
Creators: name: Infante, Gennaro
name: Pietramala, Paolamaria
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: Primary 45G15, secondary 34B10, 34B18, 47H30

description: Using the theory of fixed point index, we discuss the existence and multiplicity of non-negative solutions of a wide class of boundary value problems with coupled nonlinear boundary conditions. Our approach is fairly general and covers a variety of situations. We illustrate our theory in an example all the constants that occur in our theory.
Stoichiometry of the photocatalytic fuel production by the reformation of aqueous acetic acid
Creators: name: Hamid, Saher
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2018
Subjects: subject: photocatalysis
subject: acetic acid
subject: co-catalyst loaded TiO2
subject: surface charge
subject: H/D exchange reaction
subject: solar fuel
subject: Photokatalyse
subject: Essigsäure
subject: Cokatalysator-beladenes TiO2
subject: Oberflächenladung
subject: H/D-Austauschreaktion
subject: Solarbrennstoff
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: In recent years, photocatalytic reaction systems gained much attention to address both energy and environmental issues. One of these photocatalytic reactions involve the conversion of aqueous organic pollutants resulting from industrial waste into value added fuels (i.e., H2, and hydrocarbons) by means of solar-light. However, less understanding about reaction mechanism limits the practical realization of such vital process. Therefore, fundamental research in this field is very important to improve the photocatalytic efficiency of these systems. This work is an assessment for the simultaneous molecular hydrogen production and organic pollutant degradation. Acetic acid (CH3COOH) has been used as a model organic pollutant and co-catalyst loaded TiO2 as the photocatalyst.
Mittelalterliche Kunst der Sammlung Kofler-Truniger, Luzern (Ausstellungsbericht)
Creators: name: Grimme, Ernst Günther
Publisher: name: Aachener Kunstblätter
Year: 2016

description: -
description: Aachener Kunstblätter, Bd. 32 (1966): Aachener Kunstblätter
Using Energy Peaks to Count Dark Matter Particles in Decays
Creators: name: Agashe, Kaustubh
name: Franceschini, Roberto
name: Kim, Doojin
name: Wardlow, Kyle
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study the determination of the symmetry that stabilizes a dark matter (DM) candidate produced at colliders. Our question is motivated per se, and by several alternative symmetries that appear in models that provide a DM particle. To this end, we devise a strategy to determine whether a heavy mother particle decays into one visible massless particle and one or two DM particles. The counting of DM particles in these decays is relevant to distinguish the minimal choice of Z_2, from a Z_3, stabilization symmetry, under which the heavy particle and the DM are charged and the visible particle is not. Our method is novel in that it chiefly uses the peak of the energy spectrum of the visible particle and only secondarily uses the M_T2 endpoint of events in which the heavy mother particles are pair-produced. We present new theoretical results concerning the energy distribution of the decay products of a three-body decay, which are crucial for our method. To demonstrate the feasibility of our method in investigating the stabilization symmetry, we apply it in distinguishing the decay of a bottom quark partner into a b quark and one or two DM particles. The method can be applied generally to distinguish two- and three-body decays, irrespective of DM.
description: 25 pages, 5 figures
Status of women with respect to selected nutrients : a nationwide cross-sectional study
Creators: name: Gellert, Sandra
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2017
Subjects: subject: Nutrient status
subject: women
subject: Germany
subject: Nährstoffstatus
subject: Frauen
subject: Deutschland
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]