cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Post-processing of polymer foam tissue scaffolds with high power ultrasound: a route to increased pore interconnectivity, pore size and fluid transport
Creators: name: Watson, N J
name: Johal, R K
name: Reinwald, Y
name: White, L J
name: Ghaemmaghami, A M
name: Morgan, S P
name: Rose, F R A J
name: Povey, M J W
name: Parker, N G
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We expose thick polymer foam tissue scaffolds to high power ultrasound and study its effect on the openness of the pore architecture and fluid transport through the scaffold. Our analysis is supported by measurements of fluid uptake during insonification and imaging of the scaffold microstructure via x-ray computed tomography, scanning electron microscopy and acoustic microscopy. The ultrasonic treatment is found to increase the mean pore size by over 10%. More striking is the improvement in fluid uptake: for scaffolds with only 40% water uptake via standard immersion techniques, we can routinely achieve full saturation of the scaffold over approximately one hour of exposure. These desirable modifications occur with no loss of scaffold integrity and negligible mass loss, and are optimized when the ultrasound treatment is coupled to a pre-wetting stage with ethanol. Our findings suggest that high power ultrasound is a highly targetted and efficient means to promote pore interconnectivity and fluid transport in thick foam tissue scaffolds.
description: 14 pages, 7 figures
Integrating passive ubiquitous surfaces into human-computer interaction
Creators: name: Schrapel, Maximilian
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2022
Subjects: subject: Ubiquitous Computing
subject: Surface Computing
subject: Augmented Reality
subject: Ubiquitäres Computing
subject: Oberflächen Computing
subject: Erweiterte Realität
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Mobile technologies enable people to interact with computers ubiquitously. This dissertation investigates how ordinary, ubiquitous surfaces can be integrated into human-computer interaction to extend the interaction space beyond the edge of the display. It turns out that acoustic and tactile features generated during an interaction can be combined to identify input events, the user, and the surface. In addition, it is shown that a heterogeneous distribution of different surfaces is particularly suitable for realizing versatile interaction modalities. However, privacy concerns must be considered when selecting sensors, and context can be crucial in determining whether and what interaction to perform.
description: Mobile Technologien ermöglichen den Menschen eine allgegenwärtige Interaktion mit Computern. Diese Dissertation untersucht, wie gewöhnliche, allgegenwärtige Oberflächen in die Mensch-Computer-Interaktion integriert werden können, um den Interaktionsraum über den Rand des Displays hinaus zu erweitern. Es stellt sich heraus, dass akustische und taktile Merkmale, die während einer Interaktion erzeugt werden, kombiniert werden können, um Eingabeereignisse, den Benutzer und die Oberfläche zu identifizieren. Darüber hinaus wird gezeigt, dass eine heterogene Verteilung verschiedener Oberflächen besonders geeignet ist, um vielfältige Interaktionsmodalitäten zu realisieren. Bei der Auswahl der Sensoren müssen jedoch Datenschutzaspekte berücksichtigt werden, und der Kontext kann entscheidend dafür sein, ob und welche Interaktion durchgeführt werden soll.
Beiträge zur chemischen Diversität der Cephalostatine
Creators: name: Fleßner, Timo
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: Cephalostatins
subject: pyrazines
subject: Heck reaction
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Spreading and vanishing in nonlinear diffusion problems with free boundaries
Creators: name: Du, Yihong
name: Lou, Bendong
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We study nonlinear diffusion problems of the form $u_t=u_{xx}+f(u)$ with free boundaries. Such problems may be used to describe the spreading of a biological or chemical species, with the free boundary representing the expanding front. For special $f(u)$ of the Fisher-KPP type, the problem was investigated by Du and Lin [8]. Here we consider much more general nonlinear terms. For any $f(u)$ which is $C^1$ and satisfies $f(0)=0$, we show that the omega limit set $ω(u)$ of every bounded positive solution is determined by a stationary solution. For monostable, bistable and combustion types of nonlinearities, we obtain a rather complete description of the long-time dynamical behavior of the problem; moreover, by introducing a parameter $σ$ in the initial data, we reveal a threshold value $σ^*$ such that spreading ($\lim_{t\to\infty}u= 1$) happens when $σ>σ^*$, vanishing ($\lim_{t\to\infty}u=0$) happens when $σ
Vouer pour se distinguer, vouer pour s'associer : les vœux du faisan et la propagande de Philippe le Bon (1454 - 1464).
Creators: name: Royer-Quesnel, Gabriel
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2023
Subjects: Voeux
Bourgogne

description: Cette thèse a pour objectif de revisiter un texte plutôt bien connu - les vœux du faisan, émis par l'aristocratie bourguignonne au milieu du XVe siècle - et de proposer une redéfinition de leur signification qui, jusqu'à présent, a été essentiellement cantonnée dans le champ sémantique ou interprétatif de la croisade. S'ils sont relativement bien documentés, et ont notamment fait l'objet d'une étude complète il y a vingt ans, le rôle et l'usage des vœux au sein du milieu aristocratique bourguignon reste énigmatique. L'échec du projet de croisade qu'ils annonçaient rend bien difficile la tâche de leur attribuer une signification qui dépasse la prise de croix. Le titre Vouer pour se distinguer, vouer pour s'associer donne un indice sur l'angle d'approche de cette thèse : extirper les vœux du faisan de leur association presque symbiotique à la croisade et les considérer comme une forme de discours socialisant, duquel la croisade ne constitue pas le cœur. Cette thèse est divisée en trois chapitres, le premier se penche sur les manuscrits qui contiennent les vœux, le deuxième sur le sens de ces vœux et le troisième sur le rôle sociopolitique de la croisade. Il en ressort une nouvelle notion, celle du vœu de service, plus adéquate pour étudier ces textes que ne l'a été celle du vœu de croisade. Cette thèse a également pour objectif secondaire de proposer et de défendre la notion de vœux de service comme forme de sociabilité propre à l'époque médiévale.
Epitokartierung monoklonaler Antikörper gegen den humanen 46 kDa Mannose-6-phosphat Rezeptor, die die Ligandbindung hemmen
Creators: name: Trotte, Bettina
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: Mannose 6-phosphate receptor
subject: epitop mapping of monoclonal antibodies
subject: ligand binding site
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]
A Grammatical Inference Approach to Language-Based Anomaly Detection in XML
Creators: name: Lampesberger, Harald
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cryptography and Security (cs.CR)
subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: False-positives are a problem in anomaly-based intrusion detection systems. To counter this issue, we discuss anomaly detection for the eXtensible Markup Language (XML) in a language-theoretic view. We argue that many XML-based attacks target the syntactic level, i.e. the tree structure or element content, and syntax validation of XML documents reduces the attack surface. XML offers so-called schemas for validation, but in real world, schemas are often unavailable, ignored or too general. In this work-in-progress paper we describe a grammatical inference approach to learn an automaton from example XML documents for detecting documents with anomalous syntax. We discuss properties and expressiveness of XML to understand limits of learnability. Our contributions are an XML Schema compatible lexical datatype system to abstract content in XML and an algorithm to learn visibly pushdown automata (VPA) directly from a set of examples. The proposed algorithm does not require the tree representation of XML, so it can process large documents or streams. The resulting deterministic VPA then allows stream validation of documents to recognize deviations in the underlying tree structure or datatypes.
description: Paper accepted at First Int. Workshop on Emerging Cyberthreats and Countermeasures ECTCM 2013
Menschliche Skelettreste aus der eisenzeitlichen Höhensiedlung auf der Achalm, Stadt Reutlingen – Archäologischer Befund und anthropologische Untersuchungen
Creators: name: Fiedler, Sven
name: Veit, Ulrich
name: Wahl, Joachim
Publisher: name: Fundberichte aus Baden-Württemberg
Year: 2016

description: [nicht vorhanden / not available]
description: Fundberichte aus Baden-Württemberg, Bd. 30 (2009): Fundberichte aus Baden-Württemberg
Untersuchungen zur Steuerung von heterogen katalysierten Reaktionen: Reaktionen der Autoabgaskatalyse an Pt(100) und an mikrostrukturierten Pt/Rh-Einkristalloberflächen
Creators: name: Schütz, Eckart
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: NO reduction
subject: Pt
subject: Rh
subject: composite surfaces
subject: periodic forcing
subject: automotive catalytic converter
subject: chemical waves
subject: segregation
subject: surface diffusion
subject: photoemission electron microscopy
subject: PEEM
subject: scanning photoemission microscopy microstructured surfaces
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Orobanche loricata Rchb.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: O. loricata Rchb. Cat. 283. Bis 1450m. 2: Gampel (Wilczek); Niedergestehi (Christ). - 3: Stalden (Vispertal) (A. Keller, Koch); «Wüste» bei Törbel, 1450 m (Stebler); Oberstalden-Visperterminen (Villaret); Visperterminen (Beauverd, Thellung). - 4: Ausserbinn (Bernoulli); Binn-Imfeld (idem).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Ein adeliger Christ aus Freiberg-Geisingen
Creators: name: Engels, Christoph
name: Wahl, Joachim
Publisher: name: Fundberichte aus Baden-Württemberg
Year: 2016

description: [nicht vorhanden / not available]
description: Fundberichte aus Baden-Württemberg, Bd. 30 (2009): Fundberichte aus Baden-Württemberg
Optical properties of Au colloids self-organized into rings via copolymer templates
Creators: name: Lamarre, S.
name: Sarrazin, A.
name: Proust, J.
name: Yockell-Lelièvre, H.
name: Plain, J.
name: Ritcey, A. M.
name: Maurer, T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The investigation of the Localized Surface Plasmon Resonance for plasmonic nanoparticles has opened new perspectives for optical nanosensors. Today, an issue in plasmonics is the development of large scale and low cost devices. We focus here on the Langmuir-Blodgett technique to self-organize gold nanoparticles (~ 7 nm) into rings (~ 60 nm) via polystyrene-b-polymethylmethacrylate templates. In particular, we investigated the optical properties of organized gold nanoparticle rings over large areas and report experimental evidence for plasmon resonances of both individual nanoparticles and collective modes. This paves the way for designing devices with multiple resonances in the visible-Infra-red spectrum and developing optical sensors.
Untersuchung instationärer Strömungsvorgänge in hochbelasteten Radialverdichtern
Creators: name: Shi, Lixin
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: Rotating stall
subject: internal flow structure
subject: early recognition of stalls
subject: Dewey Decimal Classification::600 | Technik

description: [no abstract]
The Effect of Arm Swing and Asymmetric Walking on Gait Kinetics in Young Adults
Creators: name: Bisson, Nicholas
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2023
Subjects: Dynamic Stability
Gait
Arm Swing
Symmetry
Joint Moment Impulse
Ground Reaction Forces

description: Introduction: Asymmetric gait is prevalent among older adults as well as in people with gait pathologies (e.g., Parkinson’s disease, following a stroke) and has been linked to a higher risk of falls. While a certain level of gait asymmetry is present in healthy young adults, the simulation of larger asymmetry in this population provides information about efficient strategies to regulate dynamic stability. Research investigating gait asymmetry has described spatiotemporal and kinematic strategies. However, limited information is available regarding changes in gait kinetics. Research objectives: This thesis aims to determine the gait control strategies utilized by young adults to regulate simulated gait asymmetry combined with different arm movement amplitude. We hypothesized that the hip joint would be the most affected by different arm swing conditions and asymmetric gait. We also hypothesized that asymmetric gait and active arm swing would lead to increased variability in the lower-limb movements. Methods: Fifteen healthy young adults (23.4±2.8 years, 7 Females) walked with three arm swing conditions (held, normal, and active) during symmetric and asymmetric walking conditions. The CAREN-extended System (Motek Medical, Amsterdam, NL) was used for data collection. Outcome measures included step length and width mean and variability (meanSD), vertical ground reaction forces, and lower-limb joint moment impulse mean and variability (meanSD) in the sagittal and frontal planes. Results: When comparing arm swing conditions, the active arm swing led to an increase in step width variability, vertical ground reaction forces, hip and knee variability in the sagittal plane, ankle abduction moment for the fast leg, as well as in knee variability in the frontal plane. As for gait symmetry, the asymmetric condition led to increased step width for the fast and slow legs and increased vertical ground reaction forces for the slow leg. The asymmetric condition further prompted adjustments in the frontal and sagittal planes, particularly at the ankle and hip joints during the braking phase, and in the knee joint during the propulsion phase phases when compared to the symmetric walking condition. Conclusion: Findings suggest that participants increased hip activity to control the effect of arm motion on the trunk to minimize adaptations in the lower-limb joints. The asymmetry condition demonstrated that participants searched for flexible lower-limb strategies aimed at minimizing bilateral differences between the fast and slow legs during asymmetric walking.
Collapsible Pushdown Graphs of Level 2 are Tree-Automatic
Creators: name: Kartzow, Alexander
Publisher: name: arXiv
Year: 2013
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Formal Languages and Automata Theory (cs.FL)
subject: Logic (math.LO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: F.4.1

description: We show that graphs generated by collapsible pushdown systems of level 2 are tree-automatic. Even if we allow epsilon-contractions and reachability predicates (with regular constraints) for pairs of configurations, the structures remain tree-automatic whence their first-order logic theories are decidable. As a corollary we obtain the tree-automaticity of the second level of the Caucal-hierarchy.
description: Journal version of arXiv:0912.4110, accepted for publication in LMCS
A natural correspondence between quasiconcave functions and fuzzy norms
Creators: name: Sánchez, Javier Cabello
name: González, Daniel Morales
Publisher: name: arXiv
Year: 2024
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: In this note we show that the usual notion of fuzzy norm defined on a linear space is equivalent to that of quasiconcave function, in the sense that every fuzzy norm $N:X\times\mathbb{R}[0,1]$ defined on a (real or complex) linear space X is uniquely determined by a quasiconcave function $f:X\to[0, 1]$. We explore the minimum requirements that we need to impose to some quasiconcave function $f:X\to[0, 1]$ in order to define a fuzzy norm $N:X\times\mathbb{R}[0,1]$. Later we use this equivalence to prove some properties of fuzzy norms, like a generalisation of the celebrated Decomposition Theorem.
PT symmetric lattices with a local degree of freedom
Creators: name: Vemuri, Harsha
name: Joglekar, Yogesh N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Recently, open systems with balanced, spatially separated loss and gain have been realized and studied using non-Hermitian Hamiltonians that are invariant under the combined parity and time-reversal ($\mathcal{PT}$) operations. Here, we model and investigate the effects of a local, two-state, quantum degree of freedom, called a pseudospin, on a one-dimensional tight-binding lattice with position-dependent tunneling amplitudes and a single pair of non-Hermitian, $\mathcal{PT}$-symmetric impurities. We show that if the resulting Hamiltonian is invariant under exchange of two pseudospin labels, the system can be decomposed into two uncoupled systems with tunable threshold for $\mathcal{PT}$ symmetry breaking. We discuss implications of our results to systems with specific tunneling profiles, and open or periodic boundary conditions.
description: 4 pages. 3 figures
WSLD operators II: the new fourth order difference approximations for space Riemann-Liouville derivative
Creators: name: Chen, Minghua
name: Deng, Weihua
Publisher: name: arXiv
Year: 2013
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: High order discretization schemes play more important role in fractional operators than classical ones. This is because usually for classical derivatives the stencil for high order discretization schemes is wider than low order ones; but for fractional operators the stencils for high order schemes and low order ones are the same. Then using high order schemes to solve fractional equations leads to almost the same computational cost with first order schemes but the accuracy is greatly improved. Using the fractional linear multistep methods, Lubich obtains the $ν$-th order ($ν\leq 6$) approximations of the $α$-th derivative ($α>0$) or integral ($α<0) [Lubich, SIAM J. Math. Anal., 17, 704-719, 1986], because of the stability issue the obtained scheme can not be directly applied to the space fractional operator with $α\in(1,2)$ for time dependent problem. By weighting and shifting Lubich's 2nd order discretization scheme, in [Chen & Deng, arXiv:1304.7425] we derive a series of effective high order discretizations for space fractional derivative, called WSLD opeartors there. As the sequel of the previous work, we further provide new high order schemes for space fractional derivatives by weighting and shifting Lubich's 3rd and 4th order discretizations. In particular, we prove that the obtained 4th order approximations are effective for space fractional derivatives. And the corresponding schemes are used to solve the space fractional diffusion equation with variable coefficients.
description: 22 pages, 2 figures
Voltage and Energy-Delay Performance of Giant Spin Hall Effect Switching for Magnetic Memory and Logic
Creators: name: Manipatruni, Sasikanth
name: Nikonov, Dmitri E.
name: Young, Ian A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this letter, we show that Giant Spin Hall Effect (GSHE) MRAM can enable better energy- delay and voltage performance than traditional MTJ based spin torque devices at scaled nanomagnet dimensions (10-30 nm). Firstly, we derive the effect of dimensional scaling on spin injection efficiency, voltage-delay and energy-delay of spin torque switching using MTJs and GSHE and identify the optimum electrode geometry for low operating voltage (<0.1 V), high speed (>10 GHz) operation. We show that effective spin injection efficiency >100 % can be obtained using optimum spin hall electrode thickness for 30 nm nanomagnet widths. Finally, we derive the energy-delay trajectory of GSHE and MTJ devices to calculate the energy-delay product of GSHE and MTJ devices with an energy minimum at the characteristic time of the magnets. Optimized GSHE devices when combined with PMA can enable MRAM with scaled nanomagnets (30 nm X 60 nm), ultra-low voltage operation (< 0.1 V), fast switching times (10 ps) and switching energy as low as 100 aJ/bit.
description: 16 pages, 5 figures
Studien zur Chemie der Cinchona Alkaloide
Creators: name: Braje, Wilfried Martin
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: Alkaloids
subject: conformational analysis
subject: asymmetric catalysis
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]
Padus vulgaris L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: P. vulgaris L. Cat. 296und 430. l: Pissevachebei Vernayaz (J.). - 2: Ob Saviese (Villaret und R.Rüegger); ob Ayent (Marietan); Lötschental (J.). - 3: Mont Clou (F.); Riddes (P.); Val des Dix (J.); Turtmanntal (J.); Stalden (Vispertal) (P.); Törbel (Stebler); Zermatt (Wilczek). Ssp. leptoceras (Rchb.) Are. (P. leptoceras Rchb., P.grandiflora auct. mult. [etiam Jaccard], non Lam.) - Anscheinendbis 3005m: bei der Gandegghütte ob Zermatt (Thellung 1922; in Frucht beobachtet und darum vom Finder mit Vorbehalt hierher gestellt); eine weitere hohe Stelle ist: beimRiffelsee ob Zermatt, 2750m (Braun-Blanquet1919).- 2:Guggistafel(Lötschental),1920 m (IVtarietan).- 3: ObFionnay (J., Zwicky); Col de Torrent (Beauverd); ob Zinal (Marietan); ob Törbel (Stehler); Riedgletscher ob Grächen (Koch); Visperterminen (P.); Bistinenpass (J.). - 3a: Pianezza-Corvetsch ob Gondo (Becherer). - 4: Aletschreservat (Marietan, Lüdi); Binntal, vielfach (Binz, Schmidu. a.);]V[ünstigertal (Zwicky). Var. vallesiaca Beauverd (var. variegata Saint-Lager subvar. vallesiaca Beauverd) - Von Beauverd angegeben von «tous les glaciers des Alpes lepontiennes et pennines» (insbesondere: Turtmanntal, Simplonpasshöhe,Gletsch). (Rasse von zweifelhaftersystematischer Wertigkeit:Verf.) Var. fisso-calcarata Beauverd - Von Beauverd angegeben aus dem Lötschental. (Gleiche Bemerkung.)
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
GRHydro: A new open source general-relativistic magnetohydrodynamics code for the Einstein Toolkit
Creators: name: Moesta, Philipp
name: Mundim, Bruno C.
name: Faber, Joshua A.
name: Haas, Roland
name: Noble, Scott C.
name: Bode, Tanja
name: Loeffler, Frank
name: Ott, Christian D.
name: Reisswig, Christian
name: Schnetter, Erik
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present the new general-relativistic magnetohydrodynamics (GRMHD) capabilities of the Einstein Toolkit, an open-source community-driven numerical relativity and computational relativistic astrophysics code. The GRMHD extension of the Toolkit builds upon previous releases and implements the evolution of relativistic magnetised fluids in the ideal MHD limit in fully dynamical spacetimes using the same shock-capturing techniques previously applied to hydrodynamical evolution. In order to maintain the divergence-free character of the magnetic field, the code implements both hyperbolic divergence cleaning and constrained transport schemes. We present test results for a number of MHD tests in Minkowski and curved spacetimes. Minkowski tests include aligned and oblique planar shocks, cylindrical explosions, magnetic rotors, Alfvén waves and advected loops, as well as a set of tests designed to study the response of the divergence cleaning scheme to numerically generated monopoles. We study the code's performance in curved spacetimes with spherical accretion onto a black hole on a fixed background spacetime and in fully dynamical spacetimes by evolutions of a magnetised polytropic neutron star and of the collapse of a magnetised stellar core. Our results agree well with exact solutions where these are available and we demonstrate convergence. All code and input files used to generate the results are available on http://einsteintoolkit.org. This makes our work fully reproducible and provides new users with an introduction to applications of the code.
description: 58 pages, 20 figures
Enhancing Multiclass Image Classification Accuracy through Transfer Learning: A Study on Convolutional Neural Network
Creators: name: Ren, Bingyin
name: Islam, Md Mesbah-ul
Publisher: name: Zenodo
Year: 2023

description: Deep convolutional neural network (CNN) architectures play a crucial role in enhancing image classification performance, particularly when dealing with complex foregrounds and similarities between images from different classes. While deep neural networks have proven effective in practical applications requiring high accuracy and low regression coefficients, they cannot entirely replace human involvement. This research paper aims to increase the accuracy of multiclass image classification by leveraging transfer learning in conjunction with fine-tuning techniques to enhance the performance of respective CNN models. Specifically, the VGG19, ResNet50, InceptionV3, and Xception CNN architectures are evaluated for image classification tasks. Our proposed approach focuses on optimizing pretrained CNN models using a preprocessing technique that involves image enhancement. Mean normalization and resizing techniques are applied to images from each class, which are further augmented using diverse data augmentation methods. To prevent overfitting, dropout regularization and an early stopping function are employed. The ADAM (Adaptive Moment Estimation) optimizer is used across all models, with a learning rate of 0.001 and a batch size of 30. SoftMax classifier is employed for predicting the respective image classes. A comparison is made with the accuracy of the chosen pretrained models. The results demonstrate that our fine-tuned models exhibit higher accuracy in both training and testing, as well as overall accuracy. The proposed fine-tuned InceptionV3 and Xception models achieve the highest accuracies of 99.25% and 99.16%, respectively, for the GHIM10K and Plant seedling datasets.
Analyse der RS,cis/trans-Tocotrienole
Creators: name: Drotleff, Astrid M.
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: Tocotrienols
subject: Rs,cis/trans isomers
subject: HPLC
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Covariance inflation in the ensemble Kalman filter: a residual nudging perspective and some implications
Creators: name: Luo, Xiaodong
name: Hoteit, Ibrahim
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Optimization and Control (math.OC)
subject: Statistics Theory (math.ST)
subject: Chaotic Dynamics (nlin.CD)
subject: Methodology (stat.ME)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: This note examines the influence of covariance inflation on the distance between the measured observation and the simulated (or predicted) observation with respect to the state estimate. In order for the aforementioned distance to be bounded in a certain interval, some sufficient conditions are derived, indicating that the covariance inflation factor should be bounded in a certain interval, and that the inflation bounds are related to the maximum and minimum eigenvalues of certain matrices. Implications of these analytic results are discussed, and a numerical experiment is presented to verify the validity of our analysis.
description: Accepted by Monthly Weather Review
Charakterisierung eines Schutzfaktors aus Spinat (Spinacia oleracea) in kupfer- und zinkabhängigen biochemischen Modellreaktionen und dessen Nachweis als Metallkomplexator
Creators: name: Wiechmann, Frank
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: Spinach
subject: copper
subject: chelator
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Binnengewässer – eine unterschätzte Nahrungsressource. Stabile Kohlenstoff-, Stickstoff- und Schwefelisotope aus dem Kollagen menschlicher und tierischer Knochenreste aus der urnenfelderzeitlichen Nekropole von Neckarsulm
Creators: name: Nehlich, Olaf
name: Wahl, Joachim
Publisher: name: Fundberichte aus Baden-Württemberg
Year: 2016

description: [nicht vorhanden / not available]
description: Fundberichte aus Baden-Württemberg, Bd. 31 (2010): Fundberichte aus Baden-Württemberg
Cystein-reiche sekretorische Proteine (CRISPs) des männlichen Genitaltrakts von Pferd und Schwein
Creators: name: Schambony, Alexandra
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: CRISP
subject: male genital tract
subject: fertilization
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
Neue Untersuchungen an zwei Bohrkernen aus dem Steeger See: Pollenanalysen, Sedimentologie und multivariate Statistik
Creators: name: Lechterbeck, Jutta
Publisher: name: Fundberichte aus Baden-Württemberg
Year: 2017

description: [nicht vorhanden / not available]
description: Fundberichte aus Baden-Württemberg, Bd. 33 (2013): Fundberichte aus Baden-Württemberg
Entwicklung des Arbeitsfeldes betriebliche Suchtprävention und Bedingungen seiner Professionalisierung : USA und Bundesrepublik Deutschland
Creators: name: Wienemann, Elisabeth
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: Addiction prevention
subject: health problems at workplaces
subject: employee assistance programs
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie

description: [no abstract]
Parabolic equations in simple convex polytopes with time irregular coefficients
Creators: name: Dong, Hongjie
name: Kim, Doyoon
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We prove the $W^{1,2}_p$-estimate and solvability for the Dirichlet problem of second-order parabolic equations in simple convex polytopes with time irregular coefficients, when $p\in (1,2]$. We also consider the corresponding Neumann problem in a half space when $p\in [2,\infty)$. Similar results are obtained for equations in a half space with coefficients which are measurable in a tangential direction and have small mean oscillations in the other directions.
description: 31 pages, submitted
Kultivierungen mit einem Hochleistungsstamm von Acremonium chrysogenum in komplexen und synthetischen Medien : Strategien zur Produktivitätssteigerung unter Berücksichtigung der Enzymaktivitäten der Cephalosporin C-Biosynthese
Creators: name: Seidel, Guido
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: Cultivations
subject: cephalosporin C
subject: enzyme activities
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]
Numerical Analysis of the Effects of Grooved Stator Vanes in a Radial Turbine Operating at High Pressure Ratios Reaching Choked Flow
Creators: name: Galindo, José
name: Tiseira, Andrés
name: Navarro, Roberto
name: Inhestern, Lukas Benjamin
name: Echavarría, Juan David
Publisher: name: Technische Universität Berlin
Year: 2023
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::620 Ingenieurwissenschaften::620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: choked flow
subject: shock waves
subject: sonic conditions
subject: CFD
subject: grooved survace
subject: pressure profile

description: The flow through the stator vanes of a variable geometry turbocharger turbine can reach supersonic conditions and generates a shock wave on the stator vanes, which has a potential impact on the flow loss as well as on unsteady aerodynamic interaction. The shock wave causes a sudden increase in pressure and can lead to boundary separation and strong excitation force, besides pressure fluctuation in the rotor blades. Thus, in this study, the flat surface of the vanes of a commercial variable geometry turbocharger turbine has been modified to analyze the effects of two grooved surfaces configuration using CFD simulations. The results reveal that the grooves change the turbine efficiency, especially at higher speed, where the increase in the efficiency is between 2% and 6% points. Additionally, the load fluctuation around the rotor leading edge can be reduced and minimize the factors that compromise the integrity of the turbine. Furthermore, the grooves reduce the supersonic pocket developed on the suction side of the vane and diminish the shock wake intensity. Evaluating the effectiveness of the available energy usage in the turbine, on the one hand, at lower speed, the fraction of energy at the inlet destinated to produce power does not change significantly with a grooved surface on the stator vanes. On the other hand, at higher speed and higher pressure ratio with 5 grooves occurs the most effective approach of the maximum energy.
Collision-Induced Dissociation Studies on Fe(O2)n+ (n=1-6) Clusters: Application of a New Technique Based on Crossed Molecular Beams
Creators: name: Velegrakis, Michalis
name: Mihesan, Claudia
name: Jadraque, Maria
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: Gas-phase oxygen-rich iron oxide clusters Fe(O2)n+ (n=1-6), are produced in a molecular beam apparatus. Their stability and structure are investigated by measuring the fragmentation cross sections from collision-induced-dissociation experiments. For this purpose, two different techniques have been employed. The first one relies on the measurement of the fragments resulting after collisional activation and subsequent dissociation of mass selected cluster ions in a molecular beam passing through a cell filled with noble gas atoms. The second one is a new approach that we introduce and is based on crossed molecular beams to measure the fragmentation cross sections, in a more efficient manner without mass selection of the individual clusters. The cross sections obtained with the different techniques are compared with each other as well as with theoretical ones resulting from the application of a simple geometrical projection model. Finally, the general trends observed are compared with results for other Fe-molecule clusters available in the literature.
description: 5 figures, 40 references
Synthese und inhibitorische Eigenschaften von Peptidyl-Pyridinium-Methylketon-Derivaten : Studien zur spezifischen Inhibierung prolinspezifischer Peptidasen
Creators: name: Schmidt, Jörn
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: Dipeptidyl-peptidase IV (DP IV
subject: E.C:3.4.14.5)
subject: prolyl endopeptidase (PEP
subject: E.C: 3.4.21.26)
subject: peptidyl pyridinium methyl ketone
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
Biotechnologie von Aromastoffen : Transformation von [alpha]-Pinen mit Pseudomonas fluorescens NCIMB 11671 und Trennverfahren mit Zeolithen
Creators: name: Latza, Elke
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: Biotransformation
subject: Pseudomonas
subject: terpenes
subject: adsorption
subject: zeolite ZSM-5
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Observation of magnetically hard grain boundaries in double-perovskite Sr$_{2}$FeMoO$_{6}$
Creators: name: Takahashi, Y.
name: Verma, V. K.
name: Shibata, G.
name: Harano, T.
name: Ishigami, K.
name: Yoshimatsu, K.
name: Kadono, T.
name: Fujimori, A.
name: Tanaka, A.
name: Chang, F. -H.
name: Lin, H. -J.
name: Huang, D. J.
name: Chen, C. T.
name: Pal, B.
name: Sarma, D. D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Unusual low temperature magneto-resistance (MR) of ferromagnetic Sr$_{2}$FeMoO$_{6}$ polycrystals has been attributed to magnetically hard grain boundaries which act as spin valves. We detected the different magnetic hysteresis curves for the grains and the grain boundaries of polycrystalline Sr$_{2}$FeMoO$_{6}$ by utilizing the different probing depths of the different detection modes of x-ray absorption spectroscopy (XAS) and x-ray magnetic circular dichroism (XMCD), namely, the total electron yield (TEY) mode (probing depth $\sim$5 nm) and the total fluorescence yield (TFY) mode (probing depth $\sim$100 nm). At 20 K, the magnetic coercivity detected in the TEY mode ($H_{\rm c,TEY}$) was several times larger than that in the TFY mode ($H_{\rm c,TFY}$), indicating harder ferromagnetism of the grain boundaries than that of the grains. At room temperature, the grain boundary magnetism became soft and $H_{\rm c,TEY}$ and $H_{\rm c,TFY}$ were nearly the same. From line-shape analysis of the XAS and XMCD spectra, we found that in the grain boundary region the ferromagnetic component is dominated by Fe$^{2+}$ or well-screened signals while the non-magnetic component is dominated by Fe$^{3+}$ or poorly-screened signals.
description: 4 pages, 3 figures
Untersuchungen zum mittellatènezeitlichen Gräberfeld von Giengen an der Brenz, Lkr. Heidenheim
Creators: name: Jäger, Silke
Publisher: name: Fundberichte aus Baden-Württemberg
Year: 2017

description: [nicht vorhanden / not available]
description: Fundberichte aus Baden-Württemberg, Bd. 33 (2013): Fundberichte aus Baden-Württemberg
Die Bedeutung zytoprotektiver Enzyme für den Schutz insulinproduzierender Zellen gegenüber einer Schädigung durch Sauerstoffradikale, NO und Zytokine
Creators: name: Lortz, Stephan
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: Diabetes mellitus
subject: cytoprotective enzymes
subject: gene therapy
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Padus vulgaris L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: U. vulgaris L. Fehlt im Wallis. Die Angaben im Cat. 296 beziehen sich auf die folgende Art.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Generalized interaction in multigravity
Creators: name: Duplij, Steven
name: Kotvytskiy, Albert
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A general approach to description of multigravity models in D-dimensional space-time is presented. Different possibilities of generalization of the invariant volume are given. Then a most general form of the interaction potential is constructed, which for bigravity coincides with the Pauli-Fierz model. A thorough analysis of the model along the 3+1 expansion formalism is done. It is shown that the absence of ghosts the considered bigravity model is equivalent in the weak field limit to the massive gravity (the Pauli-Fierz model). Thus, on the concrete example it is shown, that the interaction between metrics leads to nonvanishing mass of graviton.
description: 12 pages (in Russian), accepted for publication in May 2013, to appear in "Theoretical and Mathematical Physics" (in Russian and English)
Wirbellosenreste aus einem mittellatènezeitlichen Brunnen im Bereich der Viereckschanze in Mengen am Oberrhein (Gem. Schallstadt-Wolfenweiler, Lkr. Breisgau-Hochschwarzwald)
Creators: name: Schmidt, Edith
Publisher: name: Fundberichte aus Baden-Württemberg
Year: 2017

description: [nicht vorhanden / not available]
description: Fundberichte aus Baden-Württemberg, Bd. 33 (2013): Fundberichte aus Baden-Württemberg
Bioprozeßanalytik mit zweidimensionaler Fluoreszenzspektroskopie
Creators: name: Marose, Stefan
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 1999
Subjects: subject: Two-dimensional fluorescence spectroscopy
subject: on-line bioprocess monitoring
subject: optical sensor
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Topological Approaches to Chromatic Number and Box Complex Analysis of Partition Graphs
Creators: name: Refahi, Behnaz
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2023
Subjects: Simplicial complex
Box Complex
Graph
Bipartite Subgraph
Morse Theory
Partition Graph
Topology
Chromatic Number

description: Determining the chromatic number of the partition graph P(33) poses a considerable challenge. We can bound it to 4 ≤ χ(P(33)) ≤ 6, with exhaustive search confirming χ(P(33)) = 6. A potential mathematical proof strategy for this equality involves identifying a Z2-invariant S4 with non-trivial homology in the box complex of the partition graph P(33), namely Bedge(︁P(33))︁, and applying the Borsuk-Ulam theorem to compute its Z2-index. This provides a robust topological lower bound for the chromatic number of P(33), termed the Lovász bound. We have verified the absence of such an S4 within certain sections of Bedge(︁P(33))︁. We also validated this approach through a case study on the Petersen graph. This thesis offers a thorough examination of various topological lower bounds for a graph’s chromatic number, complete with proofs and examples. We demonstrate instances where these lower bounds converge to a single value and others where they diverge significantly from a graph’s actual chromatic number. We also classify all vertex pairs, triples, and quadruples of P(33) into unique equivalence classes, facilitating the derivation of all maximal complete bipartite subgraphs. This classification informs the construction of all simplices of Bedge(︁P(33)). Following a detailed and technical exploration, we uncover both the maximal size of the pairwise intersections of its maximal simplices and their underlying structure. Our study proposes an algorithm for building the box complex of the partition graph P(33) using our method of identifying maximal complete bipartite subgraphs. This reduces time complexity to O(n3), marking a substantial enhancement over brute-force techniques. Lastly, we apply discrete Morse theory to construct a simplicial complex homotopy equivalent to the box complex of P(33), using two methods: elementary collapses and the determination of a discrete Morse function on the box complex. This process reduces the dimension of the box complex from 35 to 12, streamlining future calculations of the Z2-index and the Lovász bound.
Grundlagenuntersuchungen zur Entstickung und Entschwefelung von Rauchgasen durch Calciumcyanamid
Creators: name: Jänisch, Nicole
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: Calciumcyanamide
subject: NO removal
subject: SO2 removal
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Symmetrien des N=2 Strings
Creators: name: Jünemann, Klaus
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: string theory
subject: BRST-quantisation
subject: non-local symmetries
subject: PACS: 11.10.Lm
subject: 11.25.-w
subject: 11.25.HF
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Creation of Helical Dirac Fermions by Interfacing Two Gapped Systems of Ordinary Fermions
Creators: name: Wang, Z. F.
name: Yao, Meng-Yu
name: Ming, Wenmei
name: Miao, Lin
name: Zhu, Fengfeng
name: Liu, Canhua
name: Gao, C. L.
name: Qian, Dong
name: Jia, Jin-Feng
name: Liu, Feng
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Topological insulators (TIs) are a unique class of materials characterized by a surface (edge) Dirac cone state of helical Dirac fermions in the middle of bulk (surface) gap. When the thickness (width) of TIs is reduced, however, interaction between the surface (edge) states will open a gap removing the Dirac cone. Using density function theory calculation, we demonstrate the creation of helical Dirac fermions from interfacing two gapped TI films, a single bilayer Bi grown on a single quintuple layer Bi2Se3 or Bi2Te3. The theoretical prediction is directly confirmed by experiment. We further show that the extrinsic helical Dirac fermions consists of predominantly Bi bilayer states, which are created by a giant Rashba effect due to interfacial charge transfer. Our findings provide a promising new method to create novel TI materials by interface engineering.
description: 18 pages and 4 figures
Gegraben und wieder zugeschüttet – Wirbellosenreste aus einem römischen Brunnen aus Riegel
Creators: name: Schmidt, Edith
Publisher: name: Fundberichte aus Baden-Württemberg
Year: 2017

description: [nicht vorhanden / not available]
description: Fundberichte aus Baden-Württemberg, Bd. 33 (2013): Fundberichte aus Baden-Württemberg
Bleispeziierung in Hüttenprodukten
Creators: name: Kielhorn, Christian
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: Lead speciation
subject: quantitative X-ray powder diffraktion
subject: chemical speparation
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]