cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Exciton Dissociation Dynamics in Model Donor-Acceptor Polymer Heterojunctions: I. Energetics and Spectra
Creators: name: Bittner, Eric R.
name: Ramon, John Glenn Santos
name: Karabunarliev, Stoyan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this paper we consider the essential electronic excited states in parallel chains of semiconducting polymers that are currently being explored for photovoltaic and light-emitting diode applications. In particular, we focus upon various type II donor-acceptor heterojunctions and explore the relation between the exciton binding energy to the band off-set in determining the device characteristic of a particular type II heterojunction material. As a general rule, when the exciton binding energy is greater than the band off-set at the heterojunction, the exciton will remain the lowest energy excited state and the junction will make an efficient light-emitting diode. On the other hand, if the off-set is greater than the exciton binding energy, either the electron or hole can be transferred from one chain to the other. Here we use a two-band exciton to predict the vibronic absorption and emission spectra of model polymer heterojunctions. Our results underscore the role of vibrational relaxation and suggest that intersystem crossings may play some part in the formation of charge-transfer states following photoexcitation in certain cases.
Brownian motion in a truncated Weyl chamber
Creators: name: König, Wolfgang
name: Schmid, Patrick
Publisher: name: Weierstrass Institute
Year: 2010
Subjects: subject: Weyl chamber
subject: non-colliding Brownian motions
subject: Karlin-McGregor formula
subject: non-colliding probability
subject: non-exit probability
subject: eigenvalue expansion
subject: réduite
subject: 60J65
subject: 60F10

description: We examine the non-exit probability of a multidimensional Brownian motion from a growing truncated Weyl chamber. Different regimes are identified according to the growth speed, ranging from polynomial decay over stretched-exponential to exponential decay. Furthermore we derive associated large deviation principles for the empirical measure of the properly rescaled and transformed Brownian motion as the dimension grows to infinity. Our main tool is an explicit eigenvalue expansion for the transition probabilities before exiting the truncated Weyl chamber.
Nuclear Superfluidity in Exotic Nuclei and Neutron Stars
Creators: name: Sandulescu, Nicolae
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Nuclear superfludity in exotic nuclei close to the drip lines and in the inner crust matter of neutron stars have common features which can be treated with the same theoretical tools. In the first part of my lecture I discuss how two such tools, namely the HFB approach and the linear response theory can be used to describe the pairing correlations in weakly bound nuclei, in which the unbound part of the energy spectrum becomes important. Then, using the same models, I shall discuss how the nuclear superfluidity can affect the thermal properties of the inner crust of neutron stars.
description: Invited lecture given at the International Summer School on "Collective Motion and Phase Transitions in Nuclear Systems", Predeal, Romania, September 2006. To appear in World Scientific
Sharp converse results for the regularization error using distance functions
Creators: name: Flemming, Jens
name: Hofmann, Bernd
name: Mathé, Peter
Publisher: name: Weierstrass Institute
Year: 2010
Subjects: subject: regularization
subject: smoothness
subject: distance function
subject: distribution function
subject: 47A52
subject: 65J20

description: In the analysis of ill-posed inverse problems the impact of solution smoothness on accuracy and convergence rates plays an important role. For linear ill-posed operator equations in Hilbert spaces and with focus on the linear regularization schema we will establish relations between the different kinds of measuring solution smoothness in a point-wise or integral manner. In particular we discuss the interplay of distribution functions, profile functions that express the regularization error, index functions generating source conditions, and distance functions associated with benchmark source conditions. We show that typically the distance functions and the profile functions carry the same information as the distribution functions, and that this is not the case for general source conditions. The theoretical findings are accompanied with examples exhibiting applications and limitations of the approach.
Localization of Bulk Fields on AdS_4 Brane in AdS_5
Creators: name: Oda, Ichiro
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the localization of various bulk fields on an $AdS_4$ brane in $AdS_5$. In this case, for a small brane cosmological constant, all the bulk fields ranging from scalar to graviton are naturally confined to the brane only through the gravitational interaction. In particular, for the vector field we can find an interesting zero mode solution which satisfies the box boundary condition. In the cases of spin 1/2 spinor and 3/2 gravitino fields, the form of zero modes is very similar to as in a flat Minkowski brane, but they are trapped on the $AdS_4$ brane even without introducing a mass term with a 'kink' profile.
description: 9 pages, LaTex 2e, minor corrections (to appear in Phys. Lett. B)
Astrometry of the Omega Centauri Hubble Space Telescope Calibration Field
Creators: name: Mighell, Kenneth J.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Astrometry, on the International Celestial Reference Frame (epoch J2000.0), is presented for the Walker (1994, PASP, 106, 828) stars in the Omega Centauri (= NGC 5139 = C1323-1472) Hubble Space Telescope Wide Field/Planetary Camera (WF/PC) calibration field of Harris et al. (1993, AJ, 105, 1196). Harris et al. stars were first identified on a WFPC2 observation of the omega Cen HST calibration field. Relative astrometry of the Walker stars in this field was then obtained using Walker's CCD positions and astrometry derived using the STSDAS METRIC task on the positions of the Harris et al. stars on the WFPC2 observation. Finally, the relative astrometry, which was based on the HST Guide Star Catalog, is placed on the International Celestial Reference Frame with astrometry from the USNO-A2.0 catalog. An ASCII text version of the astrometric data of the Walker stars in the omega Cen HST calibration field is available electronically in the online version of the article.
description: 9 pages (LaTeX+aaspp4.sty), 6 tables (LaTeX+apjpt4.sty) and 1 figure (PostScript format). The PostScript version of the paper, the full-resolution color figure, and tables are available at http://www.noao.edu/staff/mighell/wcen/ To appear in the August 2000 issue of the Publications of the Astronomical Society of the Pacific
Most stable structure for hard spheres
Creators: name: Koch, Hans
name: Radin, Charles
name: Sadun, Lorenzo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The hard sphere model is known to show a liquid-solid phase transition, with the solid expected to be either face centered cubic or hexagonal close packed. The difference in free energy between the two structures is very small and various attempts have been made to determine which one is the more stable. We contrast the different approaches and extend one.
description: 5 pages, 1 embedded figure, to appear in Phys Rev E
Stochastic models in kinetic theory
Creators: name: Wagner, Wolfgang
Publisher: name: Weierstrass Institute
Year: 2010
Subjects: subject: Kinetic equations
subject: stochastic models
subject: finite number of states
subject: fluctuations
subject: 60J28
subject: 82C40

description: The paper is concerned with some aspects of stochastic modelling in kinetic theory. First, an overview of the role of particle models with random interactions is given. These models are important both in the context of foundations of kinetic theory and for the design of numerical algorithms in various engineering applications. Then, the class of jump processes with a finite number of states is considered. Two types of such processes are studied, where particles change their states either independently of each other (mono-molecular processes), or via binary interactions (bi-molecular processes). The relationship of these processes with corresponding kinetic equations is discussed. Equations are derived both for the average relative numbers of particles in a given state and for the fluctuations of these numbers around their averages. The simplicity of the models makes several aspects of the theory more transparent.
Threshold meson production and cosmic ray transport
Creators: name: Norbury, John W.
name: Townsend, Lawrence W.
name: Norman, Ryan B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: Astrophysics (astro-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: An interesting accident of nature is that the peak of the cosmic ray spectrum, for both protons and heavier nuclei, occurs near the pion production threshold. The Boltzmann transport equation contains a term which is the cosmic ray flux multiplied by the cross section. Therefore when considering pion and kaon production from proton-proton reactions, small cross sections at low energy can be as important as larger cross sections at higher energy. This is also true for subthreshold kaon production in nuclear collisions, but not for subthreshold pion production.
description: 9 pages, 1 figure
On the Role of Minor Galaxy Mergers in the Formation of Active Galactic Nuclei
Creators: name: Corbin, Michael R.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The large scale (~ 100 kpc) environments of Seyfert galaxies are not significantly different from those of non-Seyfert galaxies. In the context of the interaction model of the formation of active galactic nuclei (AGN), it has been proposed that AGN form via "minor mergers" of large disk galaxies with smaller companions. We test this hypothesis by comparing the nuclear spectra of 105 bright nearby galaxies with measurements of their R or r band morphological asymmetries at three successive radii. We find no significant differences in these asymmetries between the 13 Seyfert galaxies in the sample and galaxies having other nuclear spectral types (absorption, H II-region like, LINER), nor is there strong qualitative evidence that such mergers have occured among any of the Seyferts or LINERs. Thus either any minor mergers began > 1 Gyr ago and are essentially complete, or they did not occur at all, and AGN form independently of any type of interaction. Support for the latter interpretation is provided by the growing evidence that supermassive black holes exist in the cores of most elliptical and early-type spiral galaxies, which in turn suggests that nuclear activity represents a normal phase in the evolution of the bulges of massive galaxies. Galaxy mergers may increase the luminosity of Seyfert nuclei to the level of QSOs, which could explain why the latter objects appear to be found in rich environments and in interacting systems.
description: 13 pages, 2 figures, to appear in Astrophysical Journal Letters
title: Industrial fishing, sandeels, and predatory fish condition
Creators: name: Engelhard, Georg H.
name: Blanchard, Julia L.
name: Righton, David A.
name: Mackinson, Steven
Publisher: name: ASC 2007 - Theme session O
Year: 2024
Subjects: Fisheries and aquaculture

description: No abstracts are to be cited without prior reference to the author.• Various predatory fish species have better condition in years/sites of high sandeel numbers; hence better condition apparently linked to high sandeel consumption • Sandeels are crucial prey to predatory fishes, including ‘human consumption’ species • Condition – useful indicator for monitoring and managing fisheries in ecosystem context
Simulation of conditional diffusions via forward-reverse stochastic representations
Creators: name: Bayer, Christian
name: Schoenmakers, John G. M.
Publisher: name: Weierstrass Institute
Year: 2013
Subjects: subject: Forward-reverse representations
subject: pinned diffusions
subject: conditional diffusions
subject: Monte Carlo simulation
subject: 65C05
subject: 65C30

description: In this paper we derive stochastic representations for the finite dimensional distributions of a multidimensional diffusion on a fixed time interval, conditioned on the terminal state. The conditioning can be with respect to a fixed point or more generally with respect to some subset. The representations rely on a reverse process connected with the given (forward) diffusion as introduced in Milstein et al. [Bernoulli, 10(2):281-312, 2004] in the context of a forward-reverse transition density estimator. The corresponding Monte Carlo estimators have essentially root-N accuracy, hence they do not suffer from the curse of dimensionality. We provide a detailed convergence analysis and give a numerical example involving the realized variance in a stochastic volatility asset model conditioned on a fixed terminal value of the asset.
On rational singularities and counting points of schemes over finite rings
Creators: name: Glazer, Itay
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 14B05, 14G05

description: We study the connection between the singularities of a finite type $\mathbb{Z}$-scheme X and the asymptotic point count of X over various finite rings. In particular, if the generic fiber $X_{\mathbb{Q}}=X\times_{\mathrm{Spec}\mathbb{Z}}\mathrm{Spec}\mathbb{Q}$ is a local complete intersection, we show that the boundedness of $\frac{\left|X(\mathbb{Z}/p^{n}\mathbb{Z})\right|}{p^{n\mathrm{dim}X_{\mathbb{Q}}}}$ in p and n is in fact equivalent to the condition that $X_{\mathbb{Q}}$ is reduced and has rational singularities. This paper completes a result of Aizenbud and Avni.
description: 17 pages
A Mean Value Result for a Product of GL(2) and GL(3) L-Functions
Creators: name: Balkanova, Olga
name: Bhowmik, Gautami
name: Frolenkov, Dmitry
name: Raulf, Nicole
Publisher: name: arXiv
Year: 2017
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F12 (Primary), 33C05, 34E05, 34E20 (Secondary)

description: In this paper various analytic techniques are com- bined in order to study the average of a product of a Hecke L- function and a symmetric square L-function at the central point in the weight aspect. The evaluation of the second main term relies on the theory of Maaß forms of half-integral weight and the Rankin-Selberg method. The error terms are bounded using the Liouville-Green approximation.
Feel the heat: Nonlinear electrothermal feedback in organic LEDs
Creators: name: Fischer, Axel
name: Koprucki, Thomas
name: Gärtner, Klaus
name: Tietze, Max L.
name: Brückner, Jacqueline
name: Lüssem, Björn
name: Leo, Karl
name: Glitzky, Annegret
name: Scholz, Reinhard
Publisher: name: Weierstrass Institute
Year: 2013
Subjects: subject: Organic light emitting diodes
subject: Joule self-heating
subject: negative differential resistance
subject: device temperature
subject: luminance
subject: 82D37
subject: 80A20
subject: 81.05.Fb
subject: 85.60.Jb
subject: 72.80.Le

description: For lighting applications, Organic light-emitting diodes (OLED) need much higher brightness than for displays, leading to self-heating. Due to the temperature-activated transport in organic semiconductors, this can result in brightness inhomogeneities and catastrophic failure. Here, we show that due to the strong electrothermal feedback of OLEDs, the common spatial current and voltage distribution is completely changed, requiring advanced device modeling and operation concepts. Our study clearly demonstrates the effect of negative differential resistance (NDR) in OLEDs induced by self-heating. As a consequence, for increasing voltage, regions with declining voltages are propagating through the device, and even more interestingly, a part of these regions show even decreasing currents, leading to strong local variation in luminance. The expected breakthrough of OLED lighting technology will require an improved price performance ratio, and the realization of modules with very high brightness but untainted appearance is considered to be an essential step into this direction. Thus, a deeper understanding of the control of electrothermal feedback will help to make OLEDs in lighting more competitive.
Limit cycles of piecewise polynomial perturbations of higher dimensional linear differential systems
Creators: name: Llibre, Jaume
name: Novaes, Douglas Duarte
name: Zeli, Iris de Oliveira
Publisher: name: arXiv
Year: 2018
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 34A36, 34C25, 34C29, 37G15

description: The averaging theory has been extensively employed for studying periodic solutions of smooth and nonsmooth differential systems. Here, we extend the averaging theory for studying periodic solutions a class of regularly perturbed non-autonomous $n$-dimensional discontinuous piecewise smooth differential system. As a fundamental hypothesis, it is assumed that the unperturbed system has a manifold $\mathcal{Z}\subset\mathbb{R}^n$ of periodic solutions satisfying $\dim(\mathcal{Z})
Simulation of multi-frequency-induction-hardening including phase transitions and mechanical effects
Creators: name: Hömberg, Dietmar
name: Liu, Qingzhe
name: Montalvo-Urquizo, Jonathan
name: Nadolski, Dawid
name: Petzold, Thomas
name: Schmidt, Alfred
name: Schulz, Alwin
Publisher: name: Weierstrass Institute
Year: 2014
Subjects: subject: induction surface hardening
subject: multi field problem
subject: thermomechanics
subject: TRIP
subject: finite element simulation
subject: 35K55
subject: 35Q61
subject: 74F05
subject: 74F15

description: Induction hardening is a well known method for the heat treatment of steel components. With the concept of multi-frequency hardening, where currents with two different frequency components are provided on a single inductor coil, it is possible to optimize the hardening zone to follow a given contour, e.g. of a gear. In this article, we consider the simulation of multi-frequency induction hardening in 3D. The equations to solve are the vector potential formulation of Maxwell's equations describing the electromagnetic fields, the balance of momentum to determine internal stresses and deformations arising from thermoelasticity and transformation induced plasticity, a rate law to determine the distribution of different phases and the heat equation to determine the temperature distribution in the workpiece. The equations are solved using adaptive finite element methods. The simulation results are compared to experiments for discs and for gears. A very good agreement for the hardening profile and the temperature is observed. It is also possible to predict the distribution of residual stresses after the heat treatment.
Optimal Sobolev regularity for linear second-order divergence elliptic operators occurring in real-world problems
Creators: name: Disser, Karoline
name: Kaiser, Hans-Christoph
name: Rehberg, Joachim
Publisher: name: Weierstrass Institute
Year: 2014
Subjects: subject: Second-order divergence operators
subject: elliptic regularity
subject: mixed boundary conditions
subject: discontinuous coefficients
subject: 35J25
subject: 35R05
subject: 35B65

description: On bounded three-dimensional domains, we consider divergence-type operators including mixed homogeneous Dirichlet and Neumann boundary conditions and discontinuous coefficient functions. We develop a geometric framework in which it is possible to prove that the operator provides an isomorphism of suitable function spaces. In particular, in these spaces, the gradient of solutions turns out to be integrable with exponent larger than the space dimension three. Relevant examples from real-world applications are provided in great detail.
title: Random effects modeling in fisheries science using AD Model Builder
Creators: name: Skaug, Hans J.
name: Fournier, David A.
Publisher: name: ASC 2007 - Theme session O
Year: 2024
Subjects: Fisheries and aquaculture

description: No abstracts are to be cited without prior reference to the author.Statistical modeling and estimation form an integral part of fisheries science. Heterogeneity in parameters arises in almost every study, along the axes of time, space and possibly other dimensions. Examples include: Mortality changing over time in mark-recapture studies (Maunder et al, 2007), abundance varying spatially (Skaug et al 2004). Key question How much heterogeneity to allow? In practice this means estimating a variance parameter. Typically there exist no prior information about the amount of heterogeneity, so the variance must be estimated from data along with the other parameters of the model.
title: New methodology for studying large valuable fish in data poor situations:commercial mark-recapture of meagre Argyrosomus regius in the southern coastof Portugal
Creators: name: Prista, N.
name: Costa, J.L.
name: Costa, M.J.
name: Jones, C.M.
Publisher: name: ASC 2007 - Theme session O
Year: 2024
Subjects: Fisheries and aquaculture

description: No abstracts are to be cited without prior reference to the author.Life history parameters of several valuable marine fish remain unstudied in European waters. Such situations frequently arise because fishery-independent sampling methods are logistically difficult and/or costly to undertake initially given the scarcity of available biological knowledge, and so adequate and cost-effective surveys cannot be designed. In such cases, fishery-dependent sampling can provide representative samples while simultaneously keeping the costs per sample low. We developed a new fishery-dependent sampling methodology that combines representative sampling of fishery landings with economically feasible market sampling, and thus is capable of providing life history information on previously unstudied marine resources. This new methodology, termed “Commercial Mark- Recapture”, involves tagging landed fish and the subsequent recapture of their body parts in the marketplace. As a case study, we applied this method to meagre (Argyrosomus regius), the largest and most expensive sciaenid landed from European waters. Little is known about its age, growth and reproduction even though it is economically important to local fleets of the Portuguese, Spanish, and French Atlantic coasts. Our results show that “Commercial mark-recapture” is highly effective, allowing a significant number of samples to be obtained, at low cost, with quantifiable spatial, temporal, size and gear coverage of landings. The conditions and assumptions required for the successful application of this methodology are discussed, as well as its applicability to the study of life history and fishery details of other European marine fish.
The Heterotic Dyonic Instanton
Creators: name: Eyras, E.
name: Townsend, P. K.
name: Zamaklar, M.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The static Yang-Mills-Higgs dyonic instanton is shown to have a non-vanishing, but anti-self-dual, angular momentum 2-form with skew eigenvalues equal to the electric charge; for large charge the angular momentum causes the instanton to expand into a hyper-spherical shell. A class of exact multi dyonic instantons is then found and then generalized to a new class of 1/4 supersymmetric, non-singular, stationary, exact solutions of the ten-dimensional supergravity/Yang-Mills theory. These self-gravitating dyonic instantons yield new heterotic string solitons, to leading order in the inverse string tension.
description: 18 pages, LaTeX, no figures. Previous revision was to include exact multi-solitons. Third version corrects typos and ADM energy formula
Dimensional Deception from Noncommutative Tori: An alternative to Horava-Lifschitz
Creators: name: Lizzi, Fedele
name: Pinzul, Aleksandr
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Operator Algebras (math.OA)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study the dimensional aspect of the geometry of quantum spaces. Introducing a physically motivated notion of the scaling dimension, we study in detail the model based on a fuzzy torus. We show that for a natural choice of a deformed Laplace operator, this model demonstrates quite non-trivial behaviour: the scaling dimension flows from 2 in IR to 1 in UV. Unlike another model with the similar property, the so-called Horava-Lifshitz model, our construction does not have any preferred direction. The dimension flow is rather achieved by a rearrangement of the degrees of freedom. In this respect the number of dimensions is deceptive. Some physical consequences are discussed.
description: 20 pages + extensive appendix. 3 figures
Correction Four-Component Dirac-Coulomb Using Gaussian Basis-Set and Gaussian Model Distribution for Super Heavy Element (Z=115)
Creators: name: Jasim, Bilal K.
name: Al-Ani, Ayad A.
name: Abood, Saad N.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: In this paper, we consider the Dirac-Coulomb equation for many-particles, to describe the interaction between electrons in the system having many electrons. The four-component wave function will expanding into a finite basis-set, using Gaussian basis function technique, in order to describe the upper and lower two components of the 4-spinors, respectively. Gaussian basis-set type dyall.v2z has been adopted to describe the correlation and polarization of 4-component wave function. The small component Gaussian basis functions have been generated from large component Gaussian basis functions using kinetic balance relation. The considered techniques have been applied for super heavy element 115 Uup, in which the nuclei has large charge and the inner spinors s 1/2 is strongly contracted. To solve the problem resulted from singularity at the origin for the 1s 1/2 spinors. We adopting the Gaussian charge distribution model to describe the charge of nuclei. To calculate accurate properties of the atomic levels, we used Dirac-Hartree-Fock method, which have more flexibility through Gaussian basis-set to treat relativistic quantum calculation for system has many-particle.
Local Cooperativity Mechanism in the DNA Melting Transition
Creators: name: Ivanov, Vassili
name: Piontkovski, Dmitri
name: Zocchi, Giovanni
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We propose a new statistical mechanics model for the melting transition of DNA. Base pairing and stacking are treated as separate degrees of freedom, and the interplay between pairing and stacking is described by a set of local rules which mimic the geometrical constraints in the real molecule. This microscopic mechanism intrinsically accounts for the cooperativity related to the free energy penalty of bubble nucleation. The model describes both the unpairing and unstacking parts of the spectroscopically determined experimental melting curves. Furthermore, the model explains the observed temperature dependence of the effective thermodynamic parameters used in models of the nearest neighbor (NN) type. We compute the partition function for the model through the transfer matrix formalism, which we also generalize to include non local chain entropy terms. This part introduces a new parametrization of the Yeramian-like transfer matrix approach to the Poland-Scheraga description of DNA melting. The model is exactly solvable in the homogeneous thermodynamic limit, and we calculate all observables without use of the grand partition function. As is well known, models of this class have a first order or continuous phase transition at the temperature of complete strand separation depending on the value of the exponent of the bubble entropy.
description: Extended version of Phys. Rev. E paper
Preparing the Researchers of Tomorrow: Data Literacy and Undergraduate Posters
Creators: name: Marchant, Maggie
name: Belliston, Jeff
Publisher: name: Zenodo
Year: 2024

description: At universities, research involving data is often regarded as the domain of graduate students and faculty. Undergraduate students also work with data within the research process, and it can be a core experience to prepare for future education and careers. Research products from undergraduate students can also demonstrate the extent of their data literacy skills and understanding, which are becoming central to success in graduate work and the business world. Since one main way undergraduate students share research is through posters, this session will examine undergraduate posters in the context of data literacy skills.During the session we will define data literacy and discuss why it is important for undergraduate students to develop. We will review the structure of undergraduate poster competitions and other opportunities for undergraduate research. Finally, we will share results on the strengths and gaps in data literacy, followed by suggestions for supporting and encouraging undergraduate research and data literacy development beyond the traditional area of data analysis.
A gradient structure for reaction-diffusion systems and for energy-drift-diffusion systems
Creators: name: Mielke, Alexander
Publisher: name: Weierstrass Institute
Year: 2010
Subjects: subject: Gradient structure
subject: reversible mass action reactions
subject: free energy functional
subject: entropy functional
subject: energy balance equation
subject: van Roosbroeck equations
subject: 35K45
subject: 35Q92
subject: 35Q80

description: In recent years the theory of Wasserstein distances has opened up a new treatment of the diffusion equations as gradient systems, where the entropy takes the role of the driving functional and where the space is equipped with the Wasserstein metric. We show that this structure can be generalized to closed reaction-diffusion systems, where the free energy (or the entropy) is the driving functional and further conserved quantities may exists, like the total number of chemical species. The metric is constructed by using the dual dissipation potential, which is a convex function of the chemical potentials. In particular, it is possible to treat diffusion and reaction terms simultaneously. The same ideas extend to semiconductor equations involving the electron and hole densities, the electrostatic potential, and the temperature.
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IV, Cart. 188 (11 H 73), f. 0212r
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IV, Archives départementales de la Côte-d'Or, Cart. 188 (11 H 73), f. 0212r, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome IV, Archives départementales de la Côte-d'Or, Cart. 188 (11 H 73), f. 0212r, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Electronic structure of ultralong-range Rydberg pentaatomic molecules with two polar diatomic molecules
Creators: name: Aguilera-Fernández, Javier
name: Sadeghpour, H. R.
name: Schmelcher, Peter
name: González-Férez, Rosario
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We explore the electronic structure of ultralong-range pentaatomic Rydberg molecules from a merger of a Rydberg atom and two ground state heteronuclear diatomic molecules. Our focus is on the interaction of Rb($23s$) and Rb($n=20$, $l\ge 3$) Rydberg states with ground and rotationally excited KRb diatomic polar molecules. For symmetric and asymmetric configurations of the pentaatomic Rydberg molecule, we investigate the metamorphosis of the Born-Oppenheimer potential curves, essential for the binding of the molecule, with varying distance from the Rydberg core and analyze the alignment and orientation of the polar diatomic molecules.
description: 12 pages, 12 figures
Traveling wave modeling, simulation and analysis of quantum-dot mode-locked semiconductor lasers
Creators: name: Radziunas, Mindaugas
name: Vladimirov, Andrei G.
name: Viktorov, Evgeny A.
Publisher: name: Weierstrass Institute
Year: 2010
Subjects: subject: quantum dots
subject: semiconductor laser
subject: saturable absorber
subject: mode-locking
subject: optical mode
subject: 78A60
subject: 35Q60
subject: 35B30
subject: 42.55.Px
subject: 85.35.Be
subject: 73.63.Kv
subject: 42.60.Fc

description: We analyze the dynamics of a mode-locked quantum-dot edge-emitting semiconductor laser consisting of reversely biased saturable absorber and forward biased amplifying sections. To describe spatial non-uniformity of laser parameters, optical fields and carrier distributions we use the traveling wave model, which takes into account carrier exchange processes between wetting layer and quantum dots. A comprehensive parameter study and an optical mode analysis of operation regimes are presented.
Charmonium dynamics in nucleus-nucleus collisions at SPS and FAIR energies
Creators: name: Linnyk, O.
name: Bratkovskaya, E. L.
name: Cassing, W.
name: Stoecker, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Charmonium production and suppression in In+In and Pb+Pb reactions at SPS energies is investigated with the HSD transport approach within the 'hadronic comover model' as well as the 'QGP threshold scenario'. The results of the transport calculations for J/Psi suppression and the Psi prime to J/Psi ratio are compared with the recent data of the NA50 and NA60 Collaborations. We find that the comover absorption model - with a single parameter |M_0|^2 for the matrix element squared for charmonium-meson dissociation - performs best with respect to all data sets. The 'threshold scenario' - within different assumptions for the melting energy densities - yields a reasonable suppression for J/Psi but fails in reproducing the Psi prime to J/Psi ratio for Pb+Pb at 158 A GeV. Predictions for Au+Au reactions are presented for a bombarding energy of 25 A GeV in the different scenarios which will allow for a clear distinction between the models from the experimental side at the future FAIR facility.
description: 22 pages, 10 figures. v2: comments added according to referee suggestions; references updated; Nucl. Phys. A, in press
Relative stability of multipeak localized patterns
Creators: name: Vladimirov, Andrei G.
name: Lefever, René
name: Tlidi, Mustapha
Publisher: name: Weierstrass Institute
Year: 2010
Subjects: subject: Localized structures
subject: Lyapunov functional
subject: stability
subject: 35B99
subject: 37L15
subject: 45.70.Qj
subject: 05.45.-a
subject: 42.65.Pc

description: We study relative stability properties of different clusters of closely packed one- and two-dimensional localized peaks of the Swift-Hohenberg equation. We demonstrate the existence of a 'spatial Maxwell' point where clusters are almost equally stable, irrespective of the number of pes involved. Above (below) the Maxwell point, clusters become more (less) stable with the increase of the number of peaks.
Singularities of the Seiberg-Witten map
Creators: name: Bytsko, Andrei G.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct an explicit solution of the Seiberg-Witten map for a linear gauge field on the non-commutative plane. We observe that this solution as well as the solution for a constant curvature diverge when the non-commutativity parameter theta reaches certain event horizon in the theta-space. This implies that an ordinary Yang-Mills theory can be continuously deformed by the Seiberg-Witten map into a non-commutative theory only within one connected component of the theta-space.
description: 8 pages, LaTeX
Properties of the steady state distribution of electrons in semiconductors
Creators: name: Muscato, Orazio
name: Wagner, Wolfgang
name: Di Stefano, Vincenza
Publisher: name: Weierstrass Institute
Year: 2010
Subjects: subject: Boltzmann-Poisson equation
subject: semiconductors
subject: electron transport
subject: steady state distribution
subject: Monte Carlo algorithm
subject: 82D37
subject: 65C05

description: This paper studies a Boltzmann transport equation with several electron-phonon scattering mechanisms, which describes the charge transport in semiconductors. The electric field is coupled to the electron distribution function via Poisson's equation. Both the parabolic and the quasi-parabolic band approximations are considered. The steady state behaviour of the electron distribution function is investigated by a Monte Carlo algorithm. More precisely, several nonlinear functionals of the solution are calculated that quantify the deviation of the steady state from a Maxwellian distribution with respect to the wave-vector. On the one hand, the numerical results illustrate known theoretical statements about the steady state and indicate possible directions for future studies. On the other hand, the nonlinear functionals provide tools that can be used in the framework of Monte Carlo algorithms for detecting regions in which the steady state distribution has a relatively simple structure, thus providing a basis for domain decomposition methods.
title: Applying ZooScan imaging system for automated counting and identification of pelagic fish eggs from a continuous underway sampling in the North Sea
Creators: name: Antajan, Elvire
name: Shmitz, Antonin
name: Lelièvre, Stéphanie
name: Picheral, Marc
name: Gasparini, Stéphane
name: Gorsky, Gabriel
name: Vaz, Sandrine
Publisher: name: ASC 2007 - Theme session O
Year: 2024
Subjects: Fisheries and aquaculture

description: No abstracts are to be cited without prior reference to the author.Since the late 90’s, changes in abundance of important commercial fish species have been reported in the North Sea due to climate change and/or overexploitation of resources. In this context, studying spatial extent and location of spawning habitats is critical for understanding and forecasting fisheries recruitment evolution and will support ecosystem-based management. One of the main problems confronting modeling of spawning habitats is low sampling resolution, both spatial and temporal. Although it is widely recognized that small scale sampling would be relevant to increase model accuracy, the work involved in fish egg sample analysis has made it impossible to sample at very high resolution in most programs. To some extent, the lack of sampling capability has been resolved using a continuous underway fish egg sampler (CUFES), but the analysis of such amount of samples is still a very time consuming and laborious task. Recently, the development of a new laboratory imaging system, the ZooScan, capable of obtaining relatively good resolution images makes possible automated taxonomic identification using supervised learning algorithms. We apply this new approach on fish egg samples collected by the CUFES during the winter campaign International Bottom Trawl Survey (IBTS-2006) in the Southern North Sea. Automatic recognition of seven fish egg species was compared with results of the visual identification in order to validate the method of training
A Merger Scenario for the Dynamics of Abell 665
Creators: name: Gomez, Percy L.
name: Hughes, John P.
name: Birkinshaw, Mark
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present new redshift measurements for 55 galaxies in the vicinity of the rich galaxy cluster Abell 665. When combined with results from the literature, we have good velocity measurements for a sample of 77 confirmed cluster members from which we derive the cluster's redshift z=0.1829 +/- 0.0005 and line-of-sight velocity dispersion of 1390 +/- 120 km/s. Our analysis of the kinematical and spatial data for the subset of galaxies located within the central 750 kpc reveals only subtle evidence for substructure and non-Gaussianity in the velocity distribution. We find that the brightest cluster member is not moving significantly relative to the other galaxies near the center of the cluster. On the other hand, our deep ROSAT high resolution image of A665 shows strong evidence for isophotal twisting and centroid variation, thereby confirming previous suggestions of significant substructure in the hot X-ray--emitting intracluster gas. In light of this evident substructure, we have compared the optical velocity data with N-body simulations of head-on cluster mergers. We find that a merger of two similar mass subclusters (mass ratios of 1:1 or 1:2) seen close to the time of core-crossing produces velocity distributions that are consistent with that observed.
description: 30 pages and 7 figures. Accepted by the Astrophysical Journal Full resoultion figures 1 and 3 available in postscript at http://www.physics.rutgers.edu/~percy/A665paper.html
Random block operators
Creators: name: Kirsch, Werner
name: Metzger, Bernd
name: Müller, Peter
Publisher: name: Weierstrass Institute
Year: 2010
Subjects: subject: Bogoliubov-de Gennes equations
subject: random Schrödinger operators
subject: integrated density of states
subject: Wegner estimates
subject: 82B44
subject: 82D55

description: We study fundamental spectral properties of random block operators that are common in the physical modelling of mesoscopic disordered systems such as dirty superconductors. Our results include ergodic properties, the location of the spectrum, existence and regularity of the integrated density of states, as well as Lifshits tails. Special attention is paid to the peculiarities arising from the block structure such as the occurrence of a robust gap in the middle of the spectrum. Without randomness in the off-diagonal blocks the density of states typically exhibits an inverse square-root singularity at the edges of the gap. In the presence of randomness we establish a Wegner estimate that is valid at all energies. It implies that the singularities are smeared out by randomness, and the density of states is bounded. We also show Lifshits tails at these band edges. Technically, one has to cope with a non-monotone dependence on the random couplings.
Baryonic Effect on chi_cJ Suppression in Au+Au Collisions at RHIC Energies
Creators: name: Peng, Ru
name: Xu, Xiao-Ming
name: Zhou, Dai-Cui
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We predict that initially produced chi_cJ mesons at low transverse momentum in the central rapidity region are almost dissociated by nucleons and antinucleons in hadronic matter produced in central Au+Au collisions at RHIC energies sqrt {s_{NN}}= 130 and 200 GeV. In calculations the nucleon and antinucleon distributions in hadronic matter are results of evolution from their freeze-out distributions which well fit the experimental p_T spectra of proton and antiproton. Any measured chi_cJ mesons at low p_T are generated from deconfined matter and give an explicit proof of regeneration mechanism (recombination mechanism).
description: 10 pages, 3 figures, Latex, a discussion added to the reference
There is an effective one-step cofinal reduction strategy for combinators
Creators: name: Statman, Richard
Publisher: name: Carnegie Mellon University
Year: 1995
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Abstract: "In this note we shall construct an effective one-step reduction strategy for combinators. The construction clearly does not work for lambda calculus since it depends on the parallel residual property for combinators. Residuals of redexes are disjoint. However, it holds for a variety of combinatory reduction systems."
title: Development of an ovigerous lobster (Hommarus gammarus) curve model from data collected by a fisherman. Analysis of an annual variation and seasonal evolution of the curve
Creators: name: Martial, Laurans
name: Spyros, Fifas
name: Sébastien, Demanech
name: Daniel, Latrouite
name: Brérette, Stéphane
name: Brother, Debec's
Publisher: name: ASC 2007 - Theme session O
Year: 2024
Subjects: Fisheries and aquaculture

description: No abstracts are to be cited without prior reference to the author.In France, the lobster fishery is developed all along the coast. Some local places are more important considering the total landings. Aiming to assessing the trend of this fishery, l’Ifremer has established some privileged contacts with a pool of fishermen who declare more precisely their fishing efforts and landings. One of them from the Croisic, performs in addition the measure of all the lobsters he catches, for the females we know the status, ovigerous or not. We used these data to determine the functional maturity curve of lobster in south Brittany. Having the data from over a long continued period of the year, we developed a logistic model including yearly and monthly effects on maturity ogive. Previously an analysis of the catchability allows to express some assumptions.
NLO radiative corrections for Forward-Backward and Left-Right Asymmetries at a B-Factory
Creators: name: Aleksejevs, A.
name: Barkanova, S.
name: Miller, C.
name: Roney, J. M.
name: Zykunov, V.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This paper presents the first calculations of the parity-violating polarization asymmetry and forward-backward asymmetry of the $e^- e^+ \rightarrow μ^+ μ^- (γ)$ process at a center-of-mass energy of 10.58 GeV with up to one-loop electroweak radiative corrections. The calculations are relevant for future precision electroweak measurements at the Belle~II experiment, which is now collecting data at the SuperKEKB $e^- e^+$ collider with a center-of-mass energy at the mass of the $Υ(4S)$ resonance. In this paper we take under full control the bremsstrahlung process at the conditions of Belle II/SuperKEKB, and the possibilities for a soft photon approach are discussed. The scale of the obtained relative corrections to the parity-violating and forward-backward asymmetries is significant and the scattering angle dependencies of the asymmetries is non-trivial. As an additional validation cross-check using an independent formulation, the calculated asymmetries are compared to results from the KK Monte Carlo generator.
description: Fixed few typos in the text