cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Torus Knots and the Topological Vertex
Creators: name: Jockers, Hans
name: Klemm, Albrecht
name: Soroush, Masoud
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: Geometric Topology (math.GT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We propose a class of toric Lagrangian A-branes on the resolved conifold that is suitable to describe torus knots on S^3. The key role is played by the SL(2,Z) transformation, which generates a general torus knot from the unknot. Applying the topological vertex to the proposed A-branes, we rederive the colored HOMFLY polynomials for torus knots, in agreement with the Rosso and Jones formula. We show that our A-model construction is mirror symmetric to the B-model analysis of Brini, Eynard and Marino. Comparing to the recent proposal by Aganagic and Vafa for knots on S^3, we demonstrate that the disk amplitude of the A-brane associated to any knot is sufficient to reconstruct the entire B-model spectral curve. Finally, the construction of toric Lagrangian A-branes is generalized to other local toric Calabi-Yau geometries, which paves the road to study knots in other three-manifolds such as lens spaces.
description: harvmac, 42 pages, v2: comments and references added
Evolution of Yukawa couplings and quark flavour mixings in 2UED models
Creators: name: Abdalgabar, Ammar
name: Cornell, A. S.
name: Deandrea, Aldo
name: Tarhini, Ahmad
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The evolution equations of the Yukawa couplings and quark mixings are derived for the one-loop renormalization group equations in the two Universal Extra Dimension Models (UED), that is six-dimensional models, compactified in different possible ways to yield standard four space-time dimension. Different possibilities for the matter fields are discussed, such as the case of bulk propagating or localised brane fields. We discuss in both cases the evolution of the Yukawa couplings, the Jarlskog parameter and the CKM matrix elements, and we find that, for both scenarios, as we run up to the unification scale, significant renormalization group corrections are present. We also discuss the results of different observables of the five-dimensional UED model in comparison with these six-dimensional models and the model dependence of the results.
description: 20 pages, 9 figures
BSDEs under partial information and financial applications
Creators: name: Ceci, Claudia
name: Cretarola, Alessandra
name: Russo, Francesco
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: In this paper we provide existence and uniqueness results for the solution of BSDEs driven by a general square integrable martingale under partial information. We discuss some special cases where the solution to a BSDE under restricted information can be derived by that related to a problem of a BSDE under full information. In particular, we provide a suitable version of the Föllmer-Schweizer decomposition of a square integrable random variable working under partial information and we use this achievement to investigate the local risk-minimization approach for a semimartingale financial market model.
On quantum effects in the dynamics of macroscopic test masses
Creators: name: Müller-Ebhardt, Helge
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2009
Subjects: subject: Gravitationswellendetektor
subject: Laserinterferometrie
subject: makroskopische Quantenmechanik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Real-space study of the growth of magnesium on ruthenium
Creators: name: Herranz, Tirma
name: Santos, Benito
name: McCarty, Kevin F.
name: de la Figuera, Juan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The growth of magnesium on ruthenium has been studied by low-energy electron microscopy (LEEM) and scanning tunneling microscopy (STM). In LEEM, a layer-by-layer growth is observed except in the first monolayer, where the completion of the first layer in inferred by a clear peak in electron reflectivity. Desorption from the films is readily observable at 400 K. Real-space STM and low-energy electron diffraction confirm that sub-monolayer coverage presents a moiré pattern with a 1.2 nm periodicity, which evolves with further Mg deposition by compressing the Mg layer to a 2.2 nm periodicity. Layer-by-layer growth is followed in LEEM up to 10 ML. On films several ML thick a substantial density of stacking faults are observed by dark-field imaging on large terraces of the substrate, while screw dislocations appear in the stepped areas. The latter are suggested to result from the mismatch in heights of the Mg and Ru steps. Quantum size effect oscillations in the reflected LEEM intensity are observed as a function of thickness, indicating an abrupt Mg/Ru interface.
description: 21 pages, 10 figures
Euphorbia dulcis L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: E. dulcis L. Cat. 315. In der var. purpurata (Thuillier) Koch (var. incompta [Cesati] Hegi et Beger). l: Epinassey (Gams); Evionnaz (Mariétan); Miéville (Coquoz); Charavex (idem); Outre-Rhône (Gams). - 3: Ob Charrat (F., Gams); La Vouarda ob Bieudron (Villaret und Closuit). - 3a: Gondoschlucht unterhalb Gabi; Umgebung von Gondo; Zwischbergental (alles: Becherer). Forma chloradenia Boissier - l: Rhonetal unterhalb St-Maurice (J.).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
On simple zeros of the Riemann zeta-function
Creators: name: Steuding, Jörn
Publisher: name: Hannover : Universität
Year: 1999
Subjects: subject: Riemann zeta-function
subject: mean square
subject: Levinson's method
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: [no abstract]
The method of freezing as a new tool for nonlinear reduced basis approximation of parameterized evolution equations
Creators: name: Ohlberger, Mario
name: Rave, Stephan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65M08, 35B06, 35L60

description: We present a new method for the nonlinear approximation of the solution manifolds of parameterized nonlinear evolution problems, in particular in hyperbolic regimes with moving discontinuities. Given the action of a Lie group on the solution space, the original problem is reformulated as a partial differential algebraic equation system by decomposing the solution into a group component and a spatial shape component, imposing appropriate algebraic constraints on the decomposition. The system is then projected onto a reduced basis space. We show that efficient online evaluation of the scheme is possible and study a numerical example showing its strongly improved performance in comparison to a scheme without freezing.
description: 6 pages, 2 figures
INTELIGÊNCIA EMOCIONAL NO CONTEXTO ORGANIZACIONAL
Creators: name: CLAUDIA, CLAUDIA RIBEIRO DE LIMA
name: Cleusa Joana de Lima Martins
name: Bianca Christofoli Freitas Queiroz
name: Ana Cláudia de Faria Lima
name: Kaio José Silva Maluf Franco
name: Márcio Marino Navas Filho
name: Vânia Gomes Cardoso
name: Eloíza Romeiro Cunha
name: Pedro Vinícius Barreto
name: Jaquelinne de Sousa Silva Ferreira
name: Daniela Soares Rodrigues
name: Bianca Christofoli Freitas Queiroz
name: Tales Gabriel Barros e Bittencourt
name: Márcio Marino Navas Filho
name: Vânia Gomes Cardoso
name: Cláudia Ribeiro de Lima
Publisher: name: Zenodo
Year: 2023
Subjects: Emoções; Desenvolvimento pessoal; Vida social.

description: A inteligência emocional (IE) é fruto de pesquisas sobre como as emoções refletem no jeito que o ser humano pensa e se comporta, esses estudos tiveram início nos anos noventa com Mayer, DiPaolo e Salovey. Mas foi o psicólogo norte americano Daniel Goleman que trouxe mais evidência ao tema quando escreveu o livro'' inteligência emocional''. A IE constitui-se em uma série de atributos adquiridos e desenvolvidos no caráter humano que facilita sua forma de pensar de modo que o indivíduo desenvolve a capacidade de usar suas emoções a seu favor, favorecendo a sua vida pessoal, social e profissional. Este artigo vai abordar a IE no contexto organizacional. Chiavenato em seus estudos propõe que certos atributos adquiridos através da IE podem gerar não só saúde física e emocional para o colaborador, mas rendimentos monetários para as organizações. Por isso as instituições de trabalho têm investido cada vez mais para que seus colaboradores desenvolvam a IE. Este trabalho é uma revisão bibliográfica qualitativa e objetiva esclarecer o que é IE e como desenvolve-la e evidenciar seus benefícios dentro da organização.
title: Prioritizing Areas for Future Seafloor Mapping, Research, and Exploration Offshore of California, Oregon, and Washington
Creators: name: Costa, Bryan M.
name: Buja, Ken
name: Kendall, Matthew S.
name: Williams, Bethany
name: Kraus, Jennifer
Publisher: name: National Centers for Coastal Ocean Science (U.S.)
Year: 2019

description: NOAA Technical Memorandum NOS NCCOS ; 264
On solving nonlinear variational inequalities by p-version finite elements
Creators: name: Krebs, Andreas
Publisher: name: Hannover : Universität
Year: 2004
Subjects: subject: Variational inequalities
subject: hp-finite element methods
subject: a posteriori error estimators
subject: large-scale minimization
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: [no abstract]
MYOCARDIAL INFARCTION ARTICLE MODERN VIEWS
Creators: name: Aliev, Jamshid
Publisher: name: Zenodo
Year: 2023

description: Myocardial infarction (MI), colloquially known as "heart attack," is caused by decreased or complete cessation of blood flow to a portion of the myocardium. Myocardial infarction may be"silent," and go undetected, or it could be a catastrophic event leading to hemodynamic deterioration and sudden death. Most myocardial infarctions are due to underlying coronary artery disease, the leading cause of death in the United States. With coronary artery occlusion, the myocardium is deprived of oxygen. Prolonged deprivation of oxygen supply to the myocardium can lead to myocardial cell death and necrosis. Patients can present with chest discomfort or pressure that can radiate to the neck, jaw, shoulder, or arm. In addition to the history and physical exam, myocardial ischemia may be associated with ECG changes and elevated biochemical markers such as cardiac troponins. This activity describes the pathophysiology, evaluation, and management of myocardial infarction and highlights the role of the interprofessional team in improving care for affected patients.
On supertwistor geometry and integrability in super gauge theory
Creators: name: Wolf, Martin
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2006
Subjects: subject: Supertwistor geometry
subject: supersymmetric gauge theories
subject: integrability
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Access vs. Bandwidth in Codes for Storage
Creators: name: Tamo, Itzhak
name: Wang, Zhiying
name: Bruck, Jehoshua
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Maximum distance separable (MDS) codes are widely used in storage systems to protect against disk (node) failures. A node is said to have capacity $l$ over some field $\mathbb{F}$, if it can store that amount of symbols of the field. An $(n,k,l)$ MDS code uses $n$ nodes of capacity $l$ to store $k$ information nodes. The MDS property guarantees the resiliency to any $n-k$ node failures. An \emph{optimal bandwidth} (resp. \emph{optimal access}) MDS code communicates (resp. accesses) the minimum amount of data during the repair process of a single failed node. It was shown that this amount equals a fraction of $1/(n-k)$ of data stored in each node. In previous optimal bandwidth constructions, $l$ scaled polynomially with $k$ in codes with asymptotic rate $<1$. Moreover, in constructions with a constant number of parities, i.e. rate approaches 1, $l$ is scaled exponentially w.r.t. $k$. In this paper, we focus on the later case of constant number of parities $n-k=r$, and ask the following question: Given the capacity of a node $l$ what is the largest number of information disks $k$ in an optimal bandwidth (resp. access) $(k+r,k,l)$ MDS code. We give an upper bound for the general case, and two tight bounds in the special cases of two important families of codes. Moreover, the bounds show that in some cases optimal-bandwidth code has larger $k$ than optimal-access code, and therefore these two measures are not equivalent.
description: This paper was presented in part at the IEEE International Symposium on Information Theory (ISIT 2012). submitted to IEEE transactions on information theory
Parameterizing neural networks for disease classification
Creators: name: Bahra, Guryash
name: Wiese, Lena
Publisher: name: Hoboken, NJ : Blackwell Publishing Ltd
Year: 2019
Subjects: subject: artifical neural network
subject: disease classification
subject: MIMIC-III
subject: supervised machine learning
subject: Decision support systems
subject: Diagnosis
subject: Hyperbolic functions
subject: Machine learning
subject: Metadata
subject: Supervised learning
subject: Activation functions
subject: Artifical neural networks
subject: Disease classification
subject: Health care application
subject: Neural network model
subject: Run-time efficiency
subject: Supervised machine learning
subject: Multilayer neural networks
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Neural networks are one option to implement decision support systems for health care applications. In this paper, we identify optimal settings of neural networks for medical diagnoses: The study involves the application of supervised machine learning using an artificial neural network to distinguish between gout and leukaemia patients. With the objective to improve the base accuracy (calculated from the initial set-up of the neural network model), several enhancements are analysed, such as the use of hyperbolic tangent activation function instead of the sigmoid function, the use of two hidden layers instead of one, and transforming the measurements with linear regression to obtain a smoothened data set. Another setting we study is the impact on the accuracy when using a data set of reduced size but with higher data quality. We also discuss the tradeoff between accuracy and runtime efficiency.
Optimal metabolic strategies for microbial growth in stationary random environments
Creators: name: Muntoni, Anna Paola
name: De Martino, Andrea
Publisher: name: arXiv
Year: 2022
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Molecular Networks (q-bio.MN)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: In order to grow in any given environment, bacteria need to collect information about the medium composition and implement suitable growth strategies by adjusting their regulatory and metabolic degrees of freedom. In the standard sense, optimal strategy selection is achieved when bacteria grow at the fastest rate possible in that medium. While this view of optimality is well suited for cells that have perfect knowledge about their surroundings (e.g. nutrient levels), things are more involved in uncertain or fluctuating conditions, especially when changes occur over timescales comparable to (or faster than) those required to organize a response. Information theory however provides recipes for how cells can choose the optimal growth strategy under uncertainty about the stress levels they will face. Here we analyse the theoretically optimal scenarios for a coarse-grained, experiment-inspired model of bacterial metabolism for growth in a medium described by the (static) probability density of a single variable (the `stress level'). We show that heterogeneity in growth rates consistently emerges as the optimal response when the environment is sufficiently complex and/or when perfect adjustment of metabolic degrees of freedom is not possible (e.g. due to limited resources). In addition, outcomes close to those achievable with unlimited resources are often attained effectively with a modest amount of fine tuning. In other terms, heterogeneous population structures in complex media may be rather robust with respect to the resources available to probe the environment and adjust reaction rates.
Oncogenic analysis of TRF2 in the murine hematopoietic system
Creators: name: Begemann, Sebastian
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2007
Subjects: subject: TRF2
subject: hematopoietic
subject: oncogenic
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]
International students' experiences of English language learning in their home countries and Australia
Creators: name: Lee, Kyonghee
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: This study explores the language learning experiences of international students in Australia by examining and comparing their experiences both in Australia and their home countries. The aim of the study is to look at the language learning ecology in which international students learn as they complete their degree programs in Australia to understand why students experience success or challenges. Language learning ecology is used as the theoretical framework, and three key elements are analysed in depth which are settings, affordances and interactions. These elements are examined by comparing past and current experiences as well as how participants adjust to the new environment. The study involved five international student participants and three different data sources (i.e., interviews, diaries and assessment feedback) gathered over a four-week period so as to examine how participants adjusted to the learning environment. A qualitative methodology was employed using a ‘case study’ design to illustrate how participants experienced English language learning through using the settings, affordances and interactions in their environment. The findings indicated there were two significant themes in relation to the differences between the past and current learning environments. These were prior language learning experiences of students and pedagogical practices used in their home countries. In addition, there were three main themes affecting their adaptation to the Australian learning environment which were motivation, affordances and learning strategies. Students that engaged in more social interactions demonstrated a high degree of intrinsic motivation and employed more affordances as well as learning strategies that focused on cooperation and interacting with native speakers. In addition, pedagogical practices such as employing tasks that included social interaction were a marked difference to student’s past experience and assisted with their language development. The study provides insights on how students and teachers can maximize relevant affordances and interactions in their environment.
Betula verrucosa
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: E. verrucosa L. em. Jacq. Cat. 315. l: Massongex (Mariétan 1922). Die Angabe aus dem vorderen Zwischbergental (Distr. 3a; Favre in Cat. ist zweifelhaft: der Verfasser suchte die Art dort wiederholt vergeblich.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
title: An Experimental and Analytical Investigation of the Iosipescu Shear Test for Composite Materials
Creators: name: Spigel, Barry Stuart
Publisher: name: Old Dominion University Libraries
Year: 1984

description: Mechanical properties of composite materials under shear loading are difficult to determine. The Iosipescu Shear test, originally proposed for metals, has in recent years been applied to composites. It has the advantages of small specimen size, simple loading and a reasonably uniform shear stress in the test section.

The purpose of this work is to study the validity of the Iosipescu test method for measuring the shear modulus and shear strength of composites. Finite element analyses indicate that optimum specimen geometry and load locations depend upon the degree of orthotropy of the composite. Test results for a quasi-isotropic graphite/epoxy laminate show that modifications in the notch geometry aimed at improving stress distributions result in unexpected changes in the failure mode. Thus, while the Iosipescu Shear test is valid for some composites with a suitable choice of test parameters, its validity for other composites, especially with a higher orthotropy, is doubtful.
Extending a system in the calculus of structures with a self-dual quantifier
Creators: name: Roversi, Luca
Publisher: name: arXiv
Year: 2012
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: We recall that SBV, a proof system developed under the methodology of deep inference, extends multiplicative linear logic with the self-dual non-commutative logical operator Seq. We introduce SBVQ that extends SBV by adding the self-dual quantifier Sdq. The system SBVQ is consistent because we prove that (the analogous of) cut elimination holds for it. Its new logical operator Sdq operationally behaves as a binder, in a way that the interplay between Seq, and Sdq can model β-reduction of linear λ-calculus inside the cut-free subsystem BVQ of SBVQ. The long term aim is to keep developing a programme whose goal is to give pure logical accounts of computational primitives under the proof-search-as-computation analogy, by means of minimal, and incremental extensions of SBV.
description: 29 pages
Ground-based Optical Transmission Spectroscopy of the Nearby Terrestrial Exoplanet LTT 1445Ab
Creators: name: Diamond-Lowe, Hannah
name: Mendonça, João M.
name: Charbonneau, David
name: Buchhave, Lars A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Nearby M dwarf systems currently offer the most favorable opportunities for spectroscopic investigations of terrestrial exoplanet atmospheres. The LTT~1445 system is a hierarchical triple of M dwarfs with two known planets orbiting the primary star, LTT~1445A. We observe four transits of the terrestrial world LTT~1445Ab ($R=1.3$ R$_\oplus$, $M=2.9$ M$_\oplus$) at low resolution with Magellan II/LDSS3C. We use the combined flux of the LTT~1445BC pair as a comparison star, marking the first time that an M dwarf is used to remove telluric variability from time-series observations of another M dwarf. We find H$α$ in emission from both LTT~1445B and C, as well as a flare in one of the data sets from LTT~1445C. These contaminated data are removed from the analysis. We construct a broadband transit light curve of LTT~1445Ab from 620--1020 nm. Binned to 3-minute time bins we achieve an rms of 49 ppm for the combined broadband light curve. We construct a transmission spectrum with 20 spectrophotometric bins each spanning 20 nm and compare it to models of clear, 1$\times$ solar composition atmospheres. We rule out this atmospheric case with a surface pressure of 10 bars to $3.2 σ$ confidence, and with a surface pressure of 1 bar to $3.1 σ$ confidence. Upcoming secondary eclipse observations of LTT~1445Ab with JWST will further probe the cases of a high mean molecular weight atmosphere, a hazy or cloudy atmosphere, or no atmosphere at all on this terrestrial world.
description: Accepted for publication in AJ
Dependence of the microwave surface resistance of superconducting niobium on the magnitude of the rf field
Creators: name: Romanenko, A.
name: Grassellino, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Utilizing difference in temperature dependencies we decoupled BCS and residual components of the microwave surface resistance of superconducting niobium at all rf fields up to $B_\mathrm{rf}\sim110$ mT. We reveal that the residual resistance decreases with field at $B_\mathrm{rf} \lesssim$ 40 mT and strongly increases in chemically treated niobium at $B_\mathrm{rf} > 80$ mT. We find that BCS surface resistance is weakly dependent on field in the clean limit, whereas a strong and peculiar field dependence emerges after $120^\circ$C vacuum baking.
Generation of multiphoton entangled quantum states by means of integrated frequency combs
Creators: name: Reimer, Christian
name: Kues, Michael
name: Roztocki, Piotr
name: Wetzel, Benjamin
name: Grazioso, Fabio
name: Little, Brent E.
name: Chu, Sai T.
name: Johnston, Tudor
name: Bromberg, Yaron
name: Caspari, Lucia
name: Moss, David J.
name: Morandotti, Roberto
Publisher: name: Washington D.C. : American Association for the Advancement of Science
Year: 2016
Subjects: subject: optical photon states
subject: entangled quantum states
subject: quantum mechanics
subject: Kerr frequency combs
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Complex optical photon states with entanglement shared among several modes are critical to improving our fundamental understanding of quantum mechanics and have applications for quantum information processing, imaging, and microscopy. We demonstrate that optical integrated Kerr frequency combs can be used to generate several bi- and multiphoton entangled qubits, with direct applications for quantum communication and computation. Our method is compatible with contemporary fiber and quantum memory infrastructures and with chip-scale semiconductor technology, enabling compact, low-cost, and scalable implementations. The exploitation of integrated Kerr frequency combs, with their ability to generate multiple, customizable, and complex quantum states, can provide a scalable, practical, and compact platform for quantum technologies.
Random walk with priorities in communication-like networks
Creators: name: Bastas, Nikolaos
name: Maragakis, Michalis
name: Argyrakis, Panos
name: ben-Avraham, Daniel
name: Havlin, Shlomo
name: Carmi, Shai
Publisher: name: arXiv
Year: 2013
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study a model for a random walk of two classes of particles (A and B). Where both species are present in the same site, the motion of A's takes precedence over that of B's. The model was originally proposed and analyzed in Maragakis et al., Phys. Rev. E 77, 020103 (2008); here we provide additional results. We solve analytically the diffusion coefficients of the two species in lattices for a number of protocols. In networks, we find that the probability of a B particle to be free decreases exponentially with the node degree. In scale-free networks, this leads to localization of the B's at the hubs and arrest of their motion. To remedy this, we investigate several strategies to avoid trapping of the B's: moving an A instead of the hindered B; allowing a trapped B to hop with a small probability; biased walk towards non-hub nodes; and limiting the capacity of nodes. We obtain analytic results for lattices and networks, and discuss the advantages and shortcomings of the possible strategies.
description: 12 pages, 11 figures
title: Hikurangi Ocean Bottom Investigation of Tremor and Slow Slip (HOBITTS IV)
Creators: name: Wallace, Laura M.
name: TAN1705 Science Party
Publisher: name: GNS Science
Year: 2019

description: HOBITSS IV was a 12-day (24 June–5 July 2017) Wellington to Wellington R/V Tangaroa voyage (TAN1705). Objectives of TAN1705 were to (1) undertake seafloor geodetic instrument deployments, recoveries, and surveys offshore Gisborne and Mahia, and (2) acquire multicores along the Hikurangi margin and offshore the north-eastern South Island to evaluate the extent of turbidite deposition following the November 2016 Kaikōura earthquake. The seafloor geodetic aims involve using Bottom Pressure Recorders (BPRs) to determine the cm level vertical movement (upward or downward) of the seafloor during slow slip events, as well as to survey an existing seafloor transponder array using GPS-Acoustic methods to track cm level horizontal tectonic motion of the seafloor. The offshore Gisborne and Mahia region are targeted due to the large and frequent slow slip events that occur there. 5 Bottom Pressure Recorders (BPRs) belonging to Tohoku University were recovered during the voyage. These BPRs were deployed in June 2016 (on TAN1607), and recorded data for one year. 5 BPRs belonging to Kyoto University, and 4 BPRs belonging to the University of Texas were deployed on the voyage (for a total of 9 deployments); these will be retrieved on a voyage planned for later in 2018. A GPS-A survey of a transponder array offshore Gisborne was undertaken for 30 hours, which will result in a position for the array accurate to within a few cm. The second phase of the voyage (commencing July 30th) involved multicore sample acquisition at 26 sites, spanning from offshore Hawke Bay to Pegasus Bay. The multicoring builds on results from an earlier piston coring and multicoring campaign1 November 2016 that was interrupted by the Kaikōura earthquake. All voyage objectives underpin research funded by an MBIE Endeavour fund programme: “Diagnosing peril posed by the Hikurangi subduction zone: New Zealand’s largest plate boundary fault.” (auth)
The Scattering amplitude for one parameter family of shape invariant potentials related to Xm Jacobi polynomials
Creators: name: Yadav, Rajesh Kumar
name: Khare, Avinash
name: Mandala, Bhabani Prasad
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider the recently discovered, one parameter family of exactly solvable shape invariant potentials which are isospectral to the generalized Pöschl-Teller potential. By explicitly considering the asymptotic behaviour of the Xm Jacobi polynomials associated with this system (m = 1, 2, 3, ...), the scattering amplitude for the one parameter family of potentials is calculated explicitly.
description: 8 Pages, No Figures
One dimensional 4-component alkali fermions
Creators: name: Jaramillo Salazar, Juan Diego
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2014
Subjects: subject: Ultracold atoms
subject: alkali metals
subject: strong correlations
subject: Ultrakalte Atome
subject: Alkalimetalle
subject: starke Korrelationen
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Hit-and-run for numerical integration
Creators: name: Rudolf, Daniel
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We study the numerical computation of an expectation of a bounded function with respect to a measure given by a non-normalized density on a convex body. We assume that the density is log-concave, satisfies a variability condition and is not too narrow. We consider general convex bodies or even the whole $\R^d$ and show that the integration problem satisfies a refined form of tractability. The main tools are the hit-and-run algorithm and an error bound of a multi run Markov chain Monte Carlo method.
Isospin transport in 84Kr + 112,124Sn collisions at Fermi energies
Creators: name: Barlini, S.
name: Piantelli, S.
name: Casini, G.
name: Maurenzig, P. R.
name: Olmi, A.
name: Bini, M.
name: Carboni, S.
name: Pasquali, G.
name: Poggi, G.
name: Stefanini, A. A.
name: Bougault, R.
name: Bonnet, E.
name: Borderie, B.
name: Chbihi, A.
name: Frankland, J. D.
name: Gruyer, D.
name: Lopez, O.
name: Neindre, N. Le
name: Parlog, M.
name: Rivet, M. F.
name: Vient, E.
name: Rosato, E.
name: Spadaccini, G.
name: Vigilante, M.
name: Bruno, M.
name: Marchi, T.
name: Morelli, L.
name: Cinausero, M.
name: Degerlier, M.
name: Gramegna, F.
name: Kozik, T.
name: Twarog, T.
name: Alba, R.
name: Maiolino, C.
name: Santonocito, D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Isotopically resolved fragments with Z<=20 have been studied with high resolution telescopes in a test run for the FAZIA collaboration. The fragments were produced by the collision of a 84Kr beam at 35 MeV/nucleon with a n-rich (124Sn) and a n-poor (112Sn) target. The fragments, detected close to the grazing angle, are mainly emitted from the phase-space region of the projectile. The fragment isotopic content clearly depends on the n-richness of the target and it is a direct evidence of isospin diffusion between projectile and target. The observed enhanced neutron richness of light fragments emitted from the phase-space region close to the center of mass of the system can be interpreted as an effect of isospin drift in the diluted neck region.
description: 8 pages, 7 figures
Quantum Transport With Two Interacting Conduction Channels
Creators: name: White, Alexander J.
name: Migliore, Agostino
name: Galperin, Michael
name: Nitzan, Abraham
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The transport properties of a conduction junction model characterized by two mutually coupled channels that strongly differ in their couplings to the leads are investigated. Models of this type describe molecular redox junctions (where a level that is weakly coupled to the leads controls the molecular charge, while a strongly coupled one dominates the molecular conduction), and electron counting devices in which the current in a point contact is sensitive to the charging state of a nearby quantum dot. Here we consider the case where transport in the strongly coupled channel has to be described quantum mechanically (covering the full range between sequential tunneling and co-tunneling), while conduction through the weakly coupled channel is a sequential process that could by itself be described by a simple master equation. We compare the result of a full quantum calculation based on the pseudoparticle non-equilibrium Green function method to that obtained from an approximate mixed quantum-classical calculation, where correlations between the channels are taken into account through either the averaged rates or the averaged energy. We find, for the steady state current, that the approximation based on the averaged rates works well in most of the voltage regime, with marked deviations from the full quantum results only at the threshold for charging the weekly coupled level. These deviations are important for accurate description of the negative differential conduction behavior that often characterizes redox molecular junctions in the neighborhood of this threshold.
description: 6 pages, 5 figures
Optical AC coupling in the gravitational wave detection band
Creators: name: Kaufer, Steffen
Publisher: name: Hannover : Insititutionelles Repositorium der Leibniz Universität Hannover
Year: 2018
Subjects: subject: shot noise
subject: Optical AC coupling
subject: Gravitational waves
subject: active laser power stabilization
subject: Schrotrauschen
subject: Gravitationswellen
subject: Laserleistungsstabilisierung
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Active laser power stabilization is essential to meet the high laser power stability demands of second generation gravitational wave detectors. To achieve a sufficient shot noise limited performance high optical power needs to be detected in traditional stabilization schemes. This leads to technical complications, for example, those caused by the thermal loads induced in the sensors. Therefore, novel detection schemes for laser power noise become desirable. One of these is Optical AC coupling, which reduces the amount of optical power that needs to be detected in order to reach a certain shot noise limited sensitivity by placing the photodetector in reflection of an optical resonator. To investigate the potential for implementing Optical AC coupling in gravitational wave detectors, different experiments were performed in the 0.3Hz to 60 kHz frequency range, thereby covering the gravitational wave detection band. A dedicated laboratory experiment was designed and set up, allowing for an Optical AC coupling based power stabilization at previously unattained sensitivity. At the core of this experiment is a 1m long, high Finesse optical resonator with a corner frequency of 2 kHz. Detailed noise investigations including effects due to non perfect mode matching were crucial in obtaining the final performance. Furthermore, the potential to increase the power stability of light injected into full scale gravitational wave detectors via Optical AC coupling was explored. For the first time, measurements of the so called Optical AC coupling transfer function of the coupled cavities, formed by the power recycling mirror and the main interferometer, of the Advanced LIGO Livingston and the GEO600 detectors are presented. Experiments towards an implementation of the Optical AC coupling technique into the power stabilization feedback control scheme of GEO600 provided valuable insight into the specific challenges that arise with such an implementation at gravitational wave detectors.
On the reinforcement of rubber by fillers and strain-induced crystallization
Creators: name: Plagge, Jan
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2018
Subjects: subject: rubber reinforcement
subject: static gas adsorption
subject: filler-polymer interaction
subject: constitutive modeling
subject: strain-induced crystallization
subject: Elastomer-Verstärkung
subject: Füllstoff-Polymer Wechselwirkung
subject: konstitutive Modellierung
subject: dehnungsinduzierte Kristallisation
subject: statische Gasadsorption
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: This thesis is dedicated to reinforcement mechanisms in filled and strain-crystallizing elastomers. First of all, a constitutive model for filled elastomers is presented. It is based on the non-affine tube model whose length measure is heterogeneously constraint by the filler particles. The model successfully describes a variety of compounds for different deformation modes, speeds and temperatures. When increasing crosslink density or amount of filler systematically, the parameters evolve in a physically reasonable manner. Moreover an extension and simplification of the model is presented, greatly improving its performance in Finite-Element applications. To further support the modeling hypothesis the interaction of different industrial grade carbon blacks and silicas with polymer-analogue gases is analyzed by means of static gas adsorption. The isotherms are deconvolved into a surface energy distribution using a specifically designed algorithm. Probing the samples with different gases reveals the different polar- and dispersive interaction capabilities of silica and carbon black. Chain desorption from the fillers surface is identified as a possible origin of mechanical hysteresis at large strains. Self reinforcement due to strain-induced crystallization (SIC) in natural rubber is analyzed by comparing the measured temperature increase upon deformation with a hypothetical temperature calculated from the mechanical response. The difference of both temperatures is attributed to crystallization. The method is applied to differently crosslinked and filled compounds and is shown to deliver fast, easy and reproducible results. Incorporation of filler changes the behavior of crystallization in accordance with the assumption of heterogeneous strain amplification. Cyclic loading at elevated strains reveals vanishing hysteresis in the degree of crystallinity, which is indicative of a different crystallization mechanism. Additionally, a theory of SIC is derived which relates mechanical response, crystal size and degree of crystallization using a minimal set of parameters. It takes into account the entropy loss due to attaching a chain to a crystal and naturally explains the constant crystal length and constant crystallization strain onset observed by many authors. The reinforcing effect of SIC is attributed to an intrinsic strain regulation mechanism.
Der sequenzielle Bilderbogen des 19. Jahrhunderts
Creators: name: Auringer, Julian Peter Friedrich
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2019
Subjects: subject: Catchpenny prints
subject: Literary illustration
subject: Literary adaptation
subject: Bilderbogen
subject: Comic
subject: Literaturillustration
subject: Literaturadaption
subject: Dewey Decimal Classification::800 | Literatur, Rhetorik, Literaturwissenschaft

description: Das Medium Bilderbogen wird unzutreffend zum Vorläufer der Comics erklärt. Dass es sich beim Bilderbogen jedoch um ein eigenständiges Trägermedium handelt, ein Medium also, das nicht nur comicähnliche Bildgeschichten, sondern auch Ankleidepuppen aus Papier, Bastelbogen, Drucke, Tagesgeschehen, Weltpolitik uvm. beinhaltet, wird zumeist ignoriert. Der Fokus dieser Dissertation liegt indes ganz auf den sequenziellen Bildergeschichten der Bilderbogen. Eine korpusgestützte Analyse von 630 Bogen jeglichen Inhalts untersucht das Medium auf das Vorkommen von sequenziellen, nicht-sequenziellen und seriellen Bogen. Die sequenziellen/seriellen Fundstücke werden ferner anhand von 71 Analysen auf comicrelevante Strukturen untersucht und in einer Auswertung strukturell verglichen. Es wird so möglich, allgemeingültige Aussagen über die sequenziellen Bogen, ihr prozentuales Vorkommen und Ähnlichkeiten zu frühen, einseitigen Comicseiten (die in späteren Analysen noch untersucht werden müssen) zu treffen. Ziel der Analyse ist es nicht, den sequenziellen Bilderbogen als Comicvorgänger zu definieren, sondern den Einfluss auf den Comic bzw. die strukturellen Ähnlichkeiten nachzuweisen.
description: The German Bilderbogen (a specific form of the catchpenny print) is incorrectly defined as the equivalent of today’s comics. Sometimes they are even seen as comic predecessors. However, the fact that the Bilderbogen is an independent carrier medium, a medium that contains not only comic-like picture stories, but also dressing dolls made of paper, handicraft sheets, art prints, current events, world politics and much more, is mostly ignored. The focus of this doctoral thesis, however, is entirely on the sequential picture stories of the Bilderbogen. A corpus-based analysis of 630 sheets of any content examines the medium for the occurrence of sequential, non-sequential and serial sheets. The sequential/serial objects are further examined for comic-relevant structures by means of 71 analyses and compared structurally and content wise in an evaluation. This allows to make generally valid statements about the sequential arcs, their percentage occurrence and their structural similarities to early, one-page comic pages (which still need to be further investigated in later analyses). The aim of the analysis is not to define the picture sheet as a comic predecessor, but to prove the influence and/or the structural similarities.
Rapid and robust endoscopic content area estimation: A lean GPU-based pipeline and curated benchmark dataset
Creators: name: Budd, Charlie
name: Garcia-Peraza-Herrera, Luis C.
name: Huber, Martin
name: Ourselin, Sebastien
name: Vercauteren, Tom
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Endoscopic content area refers to the informative area enclosed by the dark, non-informative, border regions present in most endoscopic footage. The estimation of the content area is a common task in endoscopic image processing and computer vision pipelines. Despite the apparent simplicity of the problem, several factors make reliable real-time estimation surprisingly challenging. The lack of rigorous investigation into the topic combined with the lack of a common benchmark dataset for this task has been a long-lasting issue in the field. In this paper, we propose two variants of a lean GPU-based computational pipeline combining edge detection and circle fitting. The two variants differ by relying on handcrafted features, and learned features respectively to extract content area edge point candidates. We also present a first-of-its-kind dataset of manually annotated and pseudo-labelled content areas across a range of surgical indications. To encourage further developments, the curated dataset, and an implementation of both algorithms, has been made public (https://doi.org/10.7303/syn32148000, https://github.com/charliebudd/torch-content-area). We compare our proposed algorithm with a state-of-the-art U-Net-based approach and demonstrate significant improvement in terms of both accuracy (Hausdorff distance: 6.3 px versus 118.1 px) and computational time (Average runtime per frame: 0.13 ms versus 11.2 ms).
description: Presented at AE-CAI MICCAI workshop
Anisotropy of Cosmic Acceleration
Creators: name: Zhao, W.
name: Wu, P. X.
name: Zhang, Y.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this paper, we study the anisotropy of cosmic acceleration by dividing the Union2 Type Ia supernova dataset into 12 subsets according to their positions in Galactic coordinate system. In each region, we derive the deceleration parameter $q_0$ as the diagnostic to quantify the anisotropy level in the corresponding direction, and construct $q_0$ anisotropic maps by combining these $q_0$ values. In addition to the monopole component, we find the significant dipole effect in the $q_0$-maps with the amplitude $A_1=0.466^{+0.255}_{-0.205}$, which deviates from zero at more than 2-$σ$ level. The direction of the best-fit dipole is ($θ=108.8^{\circ}$, $ϕ=187.0^{\circ}$) in Galactic system. Interesting enough, we find the direction of this dipole is nearly perpendicular to the CMB kinematic dipole, and the angle between them is $95.7^{\circ}$. The perpendicular relation is anomalous at the 1-in-10 level.
description: 6 pages, 5 figures, 1 table, IJMPD accepted
Optical frequency transfer via telecommunication fiber links for metrological applications
Creators: name: Droste, Stefan
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2014
Subjects: subject: Fiber link
subject: frequency transfer
subject: atomic clock
subject: Faserverbindung
subject: Frequenztransfer
subject: Atomuhr
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]