cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Arbeitsgemeinschaft: Percolation
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2007
Subjects: subject: Konferenzschrift
subject: 510

description: Abstract. Percolation as a mathematical theory is more than fifty years old. During its life, it has attracted the attention of both physicists and mathematicians. This is due in large part to the fact that it represents one of the simplest examples of a statistical mechanical model undergoing a phase transition, and that several interesting results can be obtained rigorously. In recent years the interest in percolation has spread even further, following the introduction by Oded Schramm of the Schramm-Loewner Evolution (SLE) and a theorem by Stanislav Smirnov showing the conformal invariance of the continuum scaling limit of two-dimensional critical percolation. These results establish a new, powerful and mathematically rigorous, link between lattice-based statistical mechanical models and conformally invariant models in the plane, studied by physicists under the name of Conformal Field Theory (CFT). The Arbeitsgemeinschaft on percolation has attracted more than thirty participants, most of them young researchers, from several countries in Europe, North America, and Brazil. The main focus has been on recent developments, but several classical results have also been presented.
Points on the grid
Creators: name: Bowering, George
Publisher: name: University of British Columbia
Year: 2011

description: The thesis comprises an essay and a collection of poems written in an attempt to define my perception of the external world, and my reaction to that world. The essay seeks to explain a recent development in my poetic theory. In the essay, "Universal And Particular," I begin by describing my first awareness of the simultaneous and uncontradictory phenomena of universality and particularity as they appear in nature. From there I state that this awareness informs the poet's view of nature and his position in nature. To this end I go to the works and statements of several poets principally my three chief personal influences, Ezra Pound, William Carlos Williams, and Charles Olson and assess them in terms of the awareness of universality and particularity as apprehended by each poet. My main point is that the poem emerges from a moment when both phenomena are most intensely present to the poet. I then proceed to discuss my own poems from the basis of my poetic stand. "Points On The Grid: Part One Of The Poems," is a collection of poems with which I hope both to state and demonstrate my premise as stated in the essay. "The Husband: Part Two Of The Poems," is a later collection, in which I am no longer didactic, but have, I hope, assimilated what I believe about universality and particularity, directly into the action of the poems, which then become an attempt on the larger matter of poetic form.
Mathematical Theory of Water Waves
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2006
Subjects: subject: Konferenzschrift
subject: 510

description: The water-wave problem is the study of the two- and threedimensional irrotational flow of a perfect fluid bounded above by a free surface subject to the forces of gravity and surface tension. It is a paradigm for most modern methods in nonlinear functional analysis and nonlinear dispersive wave theory. Its mathematical study calls upon many different approaches, as iteration methods, bifurcation theory, dynamical systems theory, complex variable methods, PDE methods, the calculus of variations, positive operator theory, topological degree theory, KAM theory, and symplectic geometry.
The Sensitivity of Respondent-driven Sampling Method
Creators: name: Lu, Xin
name: Bengtsson, Linus
name: Britton, Tom
name: Camitz, Martin
name: Kim, Beom Jun
name: Thorson, Anna
name: Liljeros, Fredrik
Publisher: name: arXiv
Year: 2010
Subjects: subject: Applications (stat.AP)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Researchers in many scientific fields make inferences from individuals to larger groups. For many groups however, there is no list of members from which to take a random sample. Respondent-driven sampling (RDS) is a relatively new sampling methodology that circumvents this difficulty by using the social networks of the groups under study. The RDS method has been shown to provide unbiased estimates of population proportions given certain conditions. The method is now widely used in the study of HIV-related high-risk populations globally. In this paper, we test the RDS methodology by simulating RDS studies on the social networks of a large LGBT web community. The robustness of the RDS method is tested by violating, one by one, the conditions under which the method provides unbiased estimates. Results reveal that the risk of bias is large if networks are directed, or respondents choose to invite persons based on characteristics that are correlated with the study outcomes. If these two problems are absent, the RDS method shows strong resistance to low response rates and certain errors in the participants' reporting of their network sizes. Other issues that might affect the RDS estimates, such as the method for choosing initial participants, the maximum number of recruitments per participant, sampling with or without replacement and variations in network structures, are also simulated and discussed.
description: 21 pages, 17 figures, 1 table
Missing baryons in shells around galaxy clusters
Creators: name: Prokhorov, Dmitry
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The cluster baryon fraction is estimated from the CMB-scattering leptonic component of the intracluster medium (ICM); however, the observed cluster baryon fraction is less than the cosmic one. Understanding the origin of this discrepancy is necessary for correctly describing the structure of the ICM. We estimate the baryonic mass in the outskirts of galaxy clusters which is difficult to observe because of low electron temperature and density in these regions. The time scale for the electrons and protons to reach equipartition in the outskirts is longer than the cluster age. Since thermal equilibrium is not achieved, a significant fraction of the ICM baryons may be hidden in shells around galaxy clusters. We derive the necessary condition on the cluster mass for the concealment of missing baryons in an outer baryon shell and show that this condition is fulfilled because cluster masses are comparable to the estimated characteristic mass $M=e^4/(m^3_{p} G^2)=1.3x10^{15}$ solar masses. The existence of extreme-ultraviolet emission haloes around galaxy clusters is predicted.
description: 6 pages, 4 figures, A&A in press
Oscillations of magnetization and conductivity in anisotropic Fulde-Ferrell-Larkin-Ovchinnikov superconductors
Creators: name: Konschelle, François
name: Cayssol, Jérôme
name: Buzdin, Alexandre I.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We derive the fluctuational magnetization and the paraconductivity of Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superconductors in their normal state. The FFLO superconducting fluctuations induce oscillations of the magnetization between diamagnetism and unusual paramagnetism which originates from the competition between paramagnetic and orbital effects. We also predict a strong anisotropy of the paraconductivity when the FFLO transition is approached in contrast with the case of a uniform BCS state. Finally building a Ginzburg-Levanyuk argument, we demonstrate that these fluctuation effects can be safely treated within the Gaussian approximation since the critical fluctuations are proeminent only within an experimentally inaccessible temperature interval.
Heavy Quark Potential at Finite Temperature in AdS/CFT
Creators: name: Albacete, Javier L.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A calculation of the heavy quark potential at finite temperature at strong coupling based on the AdS/CFT correspondence is presented. The calculation relies on the method of complex string trajectories and on the introduction of a modified renormalization subtraction. The obtained potential is smooth, negative definite for all quark-antiquark separations, and develops an imaginary part for r > r_c =0.870/πT . At large separations the real part of the potential does not exhibit the exponential Debye falloff expected from perturbation theory and instead falls off as a power law, proportional to 1/r^4.
description: 4 pages, 1 figure. Contribution to the proceedings of the 21st International Conference on Ultra-Relativistic Nucleus-Nucleus collisions (QM09), March 30 April 4 2009, Knoxville (TN)
Dimensional Reduction of the Heterotic String over nearly-Kaehler manifolds
Creators: name: Chatzistavrakidis, Athanasios
name: Zoupanos, George
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Our aim is to derive the effective action in four dimensions resulting by reducing dimensionally the ten-dimensional ${\cal N}=1$ heterotic supergravity coupled to ${\cal N}=1$ super Yang-Mills over manifolds admitting a nearly-Kähler structure. Given the fact that all six-dimensional nearly-Kähler manifolds are included in the class of the corresponding non-symmetric coset spaces plus a group manifold, our procedure amounts in applying the Coset Space Dimensional Reduction scheme using these coset spaces as internal manifolds. In our examination firstly the rules of the reduction of the theory over a general six-dimensional non-symmetric manifold are stated and subsequently a detailed case by case analysis is performed for all the three non-symmetric coset spaces. For each case the four-dimensional scalar potential is derived and the corresponding nearly-Kähler limit is obtained. Finally, we determine the corresponding supergravity description of the four-dimensional theory employing the heterotic Gukov-Vafa-Witten formula and results of the special Kähler geometry.
description: version published in JHEP, minor corrections, added references
Feasibility of classical biological control of Sonchus oleraceus in Australia
Creators: name: Lesieur, Vincent
name: Jourdan, Mireille
name: Thomann, Thierry
name: Ollivier, Mélodie
name: Tavoillot, Johannes
name: Morin, Louise
name: Raghu, S.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: Sonchus oleraceus L. (Asteraceae), an annual species native to Eurasia and northern Africa, is among the most widely distributed plant species on Earth. In Australia, S. oleraceus, is a common weed in disturbed areas such as crop fields, pastures, gardens and roadsides. In agricultural settings, it can dominate fallows and cultivated fields where it uses stored soil moisture and reduces crop yield. This weed has also developed herbicide resistance, predicating the need for alternative management solutions. In this context, we undertook field surveys and preliminary host range studies in the native range of S. oleraceus to determine the feasibility of developing classical biological control solutions for Australia. Fifty-nine phytophagous arthropod species were recorded and nine pathogenic fungi were recovered from disease symptoms. Four arthropod species were selected for initial host-specificity testing based on information available in the literature. Preliminary host-specificity tests were also performed with representative isolate(s) of six of the pathogenic fungi. All these candidate agents were shown in the tests to affect key native species in Australia in the same subtribe as S. oleraceus (i.e. Sonchus hydrophilus and Actites megalocarpus). The results of our investigations suggest that classical biological control may not be a feasible option for the management of S. oleraceus in Australia, and that alternative integrated weed management tactics may need to be pursued to mitigate the impacts of this weed.
Computational Electromagnetism and Acoustics
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2007
Subjects: subject: Konferenzschrift
subject: 510

description: It is a moot point to stress the significance of accurate and fast numerical methods for the simulation of electromagnetic fields and sound propagation for modern technology. This has triggered a surge of research in mathematical modeling and numerical analysis aimed to devise and improve methods for computational electromagnetism and acoustics. Numerical techniques for solving the initial boundary value problems underlying both computational electromagnetics and acoustics comprise a wide array of different approaches ranging from integral equation methods to finite differences. Their development faces a few typical challenges: highly oscillatory solutions, control of numerical dispersion, infinite computational domains, ill-conditioned discrete operators, lack of strong ellipticity, hysteresis phenomena, to name only a few. Profound mathematical analysis is indispensable for tackling these issues. Many outstanding contributions at this Oberwolfach conference on Computational Electromagnetism and Acoustics strikingly confirmed the immense recent progress made in the field. To name only a few highlights: there have been breakthroughs in the application and understanding of phase modulation and extraction approaches for the discretization of boundary integral equations at high frequencies. Much has been achieved in the development and analysis of discontinuous Galerkin methods. New insight have been gained into the construction and relationships of absorbing boundary conditions also for periodic media. Considerable progress has been made in the design of stable and space-time adaptive discretization techniques for wave propagation. New ideas have emerged for the fast and robust iterative solution for discrete quasi-static electromagnetic boundary value problems.
Dark Matter as a Guide Toward a Light Gluino at the LHC
Creators: name: Feldman, Daniel
name: Kane, Gordon
name: Lu, Ran
name: Nelson, Brent D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Motivated by specific connections to dark matter signatures, we study the prospects of observing the presence of a relatively light gluino whose mass is in the range ~(500-900) GeV with a wino-like lightest supersymmetric particle with mass in the range of ~(170-210) GeV. The light gaugino spectra studied here is generally different from other models, and in particular those with a wino dominated LSP, in that here the gluinos can be significantly lighter. The positron excess reported by the PAMELA satellite data is accounted for by annihilations of the wino LSP and their relic abundance can generally be brought near the WMAP constraints due to the late decay of a modulus field re-populating the density of relic dark matter. We also mention the recent FERMI photon constraints on annihilating dark matter in this class of models and implications for direct detection experiments including CDMS and XENON. We study these signatures in models of supersymmetry with non-minimal soft breaking terms derived from both string compactifications and related supergravity models which generally lead to non-universal gaugino masses. At the LHC, large event rates from the three-body decays of the gluino in certain parts of the parameter space are found to give rise to early discovery prospects for the gaugino sector. Excess events at the 5 sigma level can arise with luminosity as low as order 100 pb^{-1} at a center of mass energy of 10 TeV and less than ~ 1 fb^{-1} at a center of mass energy of 7 TeV.
description: 2 columns, 9 pages, 5 figure captions
Mesoscale dynamics on the Sun's surface from HINODE observations
Creators: name: Roudier, T.
name: Rieutord, M.
name: Brito, D.
name: Rincon, F.
name: Malherbe, J. M.
name: Meunier, N.
name: Berger, T.
name: Frank, Z.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Aims: The interactions of velocity scales on the Sun's surface, from granulation to supergranulation are still not understood, nor are their interaction with magnetic fields. We thus aim at giving a better description of dynamics in the mesoscale range which lies between the two scales mentioned above. Method: We analyse a 48h high-resolution time sequence of the quiet Sun photosphere at the disk center obtained with the Solar Optical Telescope onboard Hinode. The observations, which have a field of view of 100 \arcsec$\times$ 100 \arcsec, typically contain four supergranules. We monitor in detail the motion and evolution of granules as well as those of the radial magnetic field. Results: This analysis allows us to better characterize Trees of Fragmenting Granules issued from repeated fragmentation of granules, especially their lifetime statistics. Using floating corks advected by measured velocity fields, we show their crucial role in the advection of the magnetic field and in the build up of the network. Finally, thanks to the long duration of the time series, we estimate that the turbulent diffusion coefficient induced by horizontal motion is approximately $430 \mathrm{km}^2 \mathrm{s}^{-1}$. Conclusions: These results demonstrate that the long living families contribute to the formation of the magnetic network and suggest that supergranulation could be an emergent length scale building up as small magnetic elements are advected and concentrated by TFG flows. Our estimate for the magnetic diffusion associated with this horizontal motion might provide a useful input for mean-field dynamo models.
description: to appear in A&A - 8 pages, 13 figures (degraded quality) - Full resolution version available @ http://www.ast.obs-mip.fr/users/rincon/hinode_roudier_aa09.pdf
Stability and Distributed Power Control in MANETs with Outages and Retransmissions
Creators: name: Giovanidis, Anastasios
name: Stanczak, Slawomir
Publisher: name: arXiv
Year: 2009
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: In the current work the effects of hop-by-hop packet loss and retransmissions via ARQ protocols are investigated within a Mobile Ad-hoc NET-work (MANET). Errors occur due to outages and a success probability function is related to each link, which can be controlled by power and rate allocation. We first derive the expression for the network's capacity region, where the success function plays a critical role. Properties of the latter as well as the related maximum goodput function are presented and proved. A Network Utility Maximization problem (NUM) with stability constraints is further formulated which decomposes into (a) the input rate control problem and (b) the scheduling problem. Under certain assumptions problem (b) is relaxed to a weighted sum maximization problem with number of summants equal to the number of nodes. This further allows the formulation of a non-cooperative game where each node decides independently over its transmitting power through a chosen link. Use of supermodular game theory suggests a price based algorithm that converges to a power allocation satisfying the necessary optimality conditions of (b). Implementation issues are considered so that minimum information exchange between interfering nodes is required. Simulations illustrate that the suggested algorithm brings near optimal results.
description: 25 pages, 6 figures, 1 table, submitted to the IEEE Trans. on Communications
Reassessing the Paradigms of Statistical Model-Building
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2007
Subjects: subject: Konferenzschrift
subject: 510

description: Statistical model-building is the science of constructing models from data and from information about the data-generation process, with the aim of analysing those data and drawing inference from that analysis. Many statistical tasks are undertaken during this analysis; they include classification, forecasting, prediction and testing. Model-building has assumed substantial importance, as new technologies enable data on highly complex phenomena to be gathered in very large quantities. This creates a demand for more complex models, and requires the model-building process itself to be adaptive. The word “paradigm” refers to philosophies, frameworks and methodologies for developing and interpreting statistical models, in the context of data, and applying them for inference. In order to solve contemporary statistical problems it is often necessary to combine techniques from previously separate paradigms. The workshop addressed model-building paradigms that are at the frontiers of modern statistical research. It tried to create synergies, by delineating the connections and collisions among different paradigms. It also endeavoured to shape the future evolution of paradigms.
The synthesis of isomeric nucleoside polyphosphates
Creators: name: Ward, David C.
Publisher: name: University of British Columbia
Year: 2011

description: The complete lack of experimental evidence concerning the chemical and biological properties of nucleoside-2' and -3' polyphosphates led to the synthesis and characterization of some of these compounds, as reported in this thesis. Since the deoxyribonucleoside-3' polyphosphates were chemically analogous to their 5'-isomers,, the synthesis of deoxycytidine-3' di-, tri- and tetraphosphates and thymidine-3' di-, tri- and tetraphosphates were readily achieved in good yields. The isomeric 2'- and 3'-ribonucleoside polyphosphates were, on the other hand, expected to be much more labile than the corresponding ribonucleoside-5' polyphosphates because of the presence of a cis vicinal hydroxyl group, which facilitates the formation of nucleoside-2',-3' cyclic phosphates. Attempts to synthesize adenosine-3' polyphosphates by way of diacetylated or dipyranylated nucleotide intermediates were without success for the conditions required to remove the protecting groups resulted in concomitant degradation of the pyrophosphate linkages. Investigation of the reaction of adenosine-(2'),3' monophosphate with phosphoramidic acid, as an approach to the synthesis- of adenosine-(2'),3'-polyphosphates, surprisingly revealed that phosphoramidic acid, under certain conditions, not only formed pyrophosphate bonds, as expected, but also esterified free hydroxyl groups. The maximal rate of ester formation occurred in a neutral or mildly alkaline media, with preferential esterification of secondary hydroxyl functions. Attempts to extend this phosphorylation reaction to the synthesis of phospho-diesters were without success as mono- or dialkylated phosphoramidates did not exhibit phosphorylative properties. Although the 2'-and 3'-isomers of adenosine di- and triphosphates were identified as products of the reaction of adenosine-(2'),3' monophosphate with phosphoramidic acid, only adenosine-2' -diphosphate was fully characterized. The latter compound when treated with strong alkali underwent a rearrangement reaction which was unique in the field of nucleotide chemistry. If this alkaline rearrangement is found to be characteristic of all isomeric 2'- and 3'-nucleoside polyphosphates, it will be of considerable practical synthetic value.
Fermi Discovery of Gamma-ray Emission from the Globular Cluster Terzan 5
Creators: name: Kong, A. K. H.
name: Hui, C. Y.
name: Cheng, K. S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report the discovery of gamma-ray emission from the Galactic globular cluster Terzan 5 using data taken with the Fermi Gamma-ray Space Telescope, from 2008 August 8 to 2010 January 1. Terzan 5 is clearly detected in the 0.5-20 GeV band by Fermi at ~27σlevel. This makes Terzan 5 as the second gamma-ray emitting globular cluster seen by Fermi after 47 Tuc. The energy spectrum of Terzan 5 is best represented by an exponential cutoff power-law model, with a photon index of ~1.9 and a cutoff energy at ~3.8 GeV. By comparing to 47 Tuc, we suggest that the observed gamma-ray emission is associated with millisecond pulsars, and is either from the magnetospheres or inverse Compton scattering between the relativistic electrons/positrons in the pulsar winds and the background soft photons from the Galactic plane. Furthermore, it is suggestive that the distance to Terzan 5 is less than 10 kpc and > 10 GeV photons can be seen in the future.
description: 4 pages, 2 figures; accepted for publication in ApJL
Modulformen
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2007
Subjects: subject: Konferenzschrift
subject: 510

description: The meeting brought together 24 mathematicas working on some of the many aspects of modular forms. The main focus was on holomorphic modular forms (mainly in many variables). This theory is very rich in explicit structures. Central themes were explicit liftings and their properties and the detailed study of modular forms for GSp(4), as well as relations to arithmetic and algebraic geometry.
Amplification of azimuthal modes with odd wave numbers during dynamical bar-mode growth in rotating stars
Creators: name: Kojima, Yasufumi
name: Saijo, Motoyuki
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Nonlinear growth of the bar-mode deformation is studied for a differentially rotating star with supercritical rotational energy. In particular, the growth mechanism of some azimuthal modes with odd wave numbers is examined by comparing a simplified mathematical model with a realistic simulation. Mode coupling to even modes, i.e., the bar mode and higher harmonics, significantly enhances the amplitudes of odd modes, unless they are exactly zero initially. Therefore, other modes which are not axially symmetric cannot be neglected at late times in the growth of the unstable bar-mode even when starting from an almost axially symmetric state.
description: 10 pages with 5 figures, revtex4.cls. Accepted for publication in the Physical Review D
Decentralized Scheduling of Discrete Production Systems with Limited Buffers
Creators: name: Zimmermann, Olaf
Publisher: name: KIT Scientific Publishing
Year: 2023
Subjects: Produktionsplanung
Dezentral
Limitierte Puffer
Ablaufplanung
Multi-Agenten-System
Production Planning
Decentral
Limited Buffer
Scheduling
Multi-Agent System

description: Modern production systems have become more flexible and agile. For them, a suitable control and planning method is needed. Agent-based systems offer the required characteristics. The contributions of these work are a remodeling of the Shifting Bottleneck heuristic to include limited buffers, the development of a decentralized multi-agent system for production planning, and the adaptation of the heuristic to the agent system. It concludes with evaluations of real-world production systems.
Professional Development of Mathematics Teachers - Research and Practice from an International Perspective
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2007
Subjects: subject: Konferenzschrift
subject: 510

description: The Oberwolfach Workshop on “Teachers Professional Development” gathered a wide spectrum of topics of international research and practice in the field of mathematics education. Well-known researchers from all over the world explored the theme from various angles and with different emphasis ranging from theoretical and conceptual perspectives to empirical interventions.
An analysis of the thyroid role in juvenile steelhead (Salmo Gairdneri Richardson) and factors responsible for its seasonal fluctuation in activity.
Creators: name: Eales, John Geoffrey
Publisher: name: University of British Columbia
Year: 2011

description: Investigation of factors controlling seasonal changes in thyroid activity of juvenile steelhead trout (Salmo gairdneri Richardson) in fresh water revealed positive correlations between temperature and radioiodine assessments of thyroid activity. Temperature and thyroid epithelial height, however, showed negative correlations. These correlations were verified experimentally. In yearlings the thyroid was refractory to increasing photoperiod (January to July) but two-year-old potential migrants showed a positive response at the same season. Thus, the high smolt thyroid activity is induced by the combined influence of rising temperature and increasing spring photon period. Body mass (logarithm) was inversely related to various I¹³¹parameters (logarithm), so that small fish had higher thyroid activities than large fish. Precocious sexual maturation of two-year-old male parr, increased swimming exercise and increased salinity were associated with higher thyroid activity Increase in ambient I¹²⁷ depressed thyroid activity and indicated that the activity of the gland (assessed by current methods) is partly a compensation for low l¹²⁷ availability. The high thyroid activity of the smolt may be due partly to endemic goitre. Since low temperature and 8-hour daylength inhibited the thyroid activity of potential migrants but did not prevent silvering, the role of thyroxin in guanine deposition under natural conditions is doubted. Possible radiohormone catabolic sites were located in metabolically active tissues including gut, kidney, liver and brain. These findings suggest a general rather than a tissue-specific role of thyroxin in metabolism. It is concluded that thyroxin may have no stimulatory role in smoltification but reflects instead the total metabolic demands on the tissues.
Photon exchange and correlations transfer in atom-atom entanglement dynamics
Creators: name: León, Juan
name: Sabín, Carlos
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze the entanglement dynamics of a system composed by a pair of neutral two-level atoms that are initially entangled, and the electromagnetic field, initially in the vacuum state, within the formalism of perturbative quantum field theory up to the second order. We show that entanglement sudden death and revival can occur while the atoms remain spacelike-separated and therefore cannot be related with photon exchange between the atoms. We interpret these phenomena as the consequence of a transfer of atom-atom entanglement to atom-field entanglement and viceversa. We also consider the different bi-partitions of the system, finding similar relationships between their entanglement evolutions.
description: 6 pages, 8 figures
Mini-Workshop: Theory and Numerics of Fluid-Solid Interaction
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2007
Subjects: subject: Konferenzschrift
subject: 510

description: This volume contains the abstracts of a series of talks given at a mini-workshop in Oberwolfach on the theory and numerics of continuum mechanical fluid-solid/structure interaction. The characteristics of these coupled multi-field problems are that the displacement of the solid/structure has a direct influence on the surrounding flow and vice versa. This interaction is generally nonlinear making the modeling complicated. The mathematical analysis concentrates on the well-posedness of the models in order to provide a rigorous explanation of fundamental experiments. Various competing numerical approaches are discussed based on different variational formulations and mainly using finite element methods.
Optimum estimation via gradients of partition functions and information measures: a statistical-mechanical perspective
Creators: name: Merhav, Neri
Publisher: name: arXiv
Year: 2009
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In continuation to a recent work on the statistical--mechanical analysis of minimum mean square error (MMSE) estimation in Gaussian noise via its relation to the mutual information (the I-MMSE relation), here we propose a simple and more direct relationship between optimum estimation and certain information measures (e.g., the information density and the Fisher information), which can be viewed as partition functions and hence are amenable to analysis using statistical--mechanical techniques. The proposed approach has several advantages, most notably, its applicability to general sources and channels, as opposed to the I-MMSE relation and its variants which hold only for certain classes of channels (e.g., additive white Gaussian noise channels). We then demonstrate the derivation of the conditional mean estimator and the MMSE in a few examples. Two of these examples turn out to be generalizable to a fairly wide class of sources and channels. For this class, the proposed approach is shown to yield an approximate conditional mean estimator and an MMSE formula that has the flavor of a single-letter expression. We also show how our approach can easily be generalized to situations of mismatched estimation.
description: 21 pages; submitted to the IEEE Transactions on Information Theory
Mini-Workshop: Surface Modeling and Syzygies
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2007
Subjects: subject: Konferenzschrift
subject: 510

description: The problem of determining the implicit equation of the image of a rational map φ : P2 99K P3 is of theoretical interest in algebraic geometry, and of practical importance in geometric modeling. There are essentially three methods which can be applied to the problem: Gröbner bases, resultants, and syzygies. Elimination via Gröbner basis methods tends to be computationally intensive and, being a general tool, is not adapted to the geometry of specific problems. Thus, it is primarily the latter two techniques which are used in practice. This is an extremely active area of research where many different perspectives come into play. The mini-workshop brought together a diverse group of researchers with different areas of expertise.
COVID-X D1.4 – Recommendation to health authorities and systems
Creators: name: AUSTRALO
Publisher: name: Zenodo
Year: 2022

description: This deliverable presents an overview of the legal challenges associated with the medical device industry and the proposed recommendations for policymakers to tackle them. The insights presented in this document have been derived within close collaboration with the teams involved in the Covid-X project as well as industry experts; relevant literature has been used to highlight the issues at hand and to offer a look at the current status quo. This deliverable serves as a reference point and action plan for policymakers on a national as well as European level and advises on future steps that ought to be taken to better facilitate the implementation of novel medical solutions; this is especially relevant for the healthcare industry that has had to transform and adapt in the last 2 years due to the Covid-19 pandemic and is looking for ways to use the newest technology to improve the current processes.
Mini-Workshop: Arithmetik von Gruppenringen
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2007
Subjects: subject: Konferenzschrift
subject: 510

description: The theory of group rings has many connections to other mathematical areas, such as number theory, K-theory, topology, representation theory, homological algebra and of course the theory of finite and infinite groups, and ring theory. This mini workshop focussed on the arithmetics of integral group rings, particularly their multiplicative structure and unit groups. The central topics were the recent developments in connection with the first Zassenhaus conjecture, constructive descriptions of units and subgroups of units, cohomological and representation theoretical methods, a complete description of the units of integral group rings of some classes of finite groups, and interactions with semigroup rings and orders.
Specialist plant-animal interactions in fire-prone ecosystems identified from the literature from The influence of changing fire regimes on specialised plant-animal interactions
Creators: name: Charles, Felicity E
name: Reside, April
name: Smith, Annabel
Publisher: name: The Royal Society
Year: 2025
Subjects: classificationCode: 310399
subject: Ecology not elsewhere classified

description: Table S1 Specialist plant-animal interactions identified from the literature. For each interaction, information was compiled on the ecosystem service, interaction type, plant post-fire reproductive mode, ecosystem type, country and the database(s) and/or literature source(s) for this information. Categorisation of reproductive mode follows Pausas et al. [1]: R = ability to resprout (+) or not (-); P = propagules persist during fire (+) or not (-); and ? = unknown. Some species included in our review had undergone binomial nomenclature revisions since publication, and we included the current name while listing the basionym for the original publication. Similar interaction types and ecosystem services are grouped together in the order which they appear in the paper. The numbers in multi-faceted interactions relate to the plant and animal species involved in the interaction type and the ecological process, as not all animals or plants in the interaction were involved in all ecological processes. The plant-post fire reproductive mode in multi-faceted interactions with more than one plant species involved is listed by species in the same order as the plant column. For mistletoe species that are family specific, the post-fire reproductive mode for the host is based on the species which it was most often seen to parasitise.
Coding Theory
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2007
Subjects: subject: Konferenzschrift
subject: 510

description: Coding theory lies naturally at the intersection of a large number of disciplines in pure and applied mathematics: algebra and number theory, probability theory and statistics, communication theory, discrete mathematics and combinatorics, complexity theory, and statistical physics. The workshop on coding theory covered many facets of the recent research advances.
Tropical Geometry
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2007
Subjects: subject: Konferenzschrift
subject: 510

description: Tropical Geometry is a new and rapidly developing discipline that touches upon many branches of modern mathematics. It is characterized by the transition of algebro-geometric objects to piecewise-linear ones, thereby retaining much of the algebro-geometric data while unveiling novel sets of techniques for outstanding problems. The workshop provided an invaluable communication platform as the subject develops into a field of its own.
Probing the terminator region atmosphere of the Hot-Jupiter XO-1b with transmission spectroscopy
Creators: name: Tinetti, G.
name: Deroo, P.
name: Swain, M. R.
name: Griffith, C. A.
name: Vasisht, G.
name: Brown, L. R.
name: Burke, C.
name: McCullough, P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report here the first infrared spectrum of the hot-Jupiter XO-1b. The observations were obtained with NICMOS instrument onboard the Hubble Space Telescope during a primary eclipse of the XO-1 system. Near photon-noise-limited spectroscopy between 1.2 and 1.8 micron allows us to determine the main composition of this hot-Jupiter's planetary atmosphere with good precision. This is the third hot-Jupiter's atmosphere for which spectroscopic data are available in the near IR. The spectrum shows the presence of water vapor (H2O), methane (CH4) and carbon dioxide (CO2), and suggests the possible presence of carbon monoxide (CO). We show that the published IRAC secondary transit emission photometric data are compatible with the atmospheric composition at the terminator determined from the NICMOS spectrum, with a range of possible mixing-ratios and thermal profiles; additional emission spectroscopy data are needed to reduce the degeneracy of the possible solutions. Finally, we note the similarity between the 1.2-1.8 micron transmission spectra of XO-1b and HD 209458b, suggesting that in addition to having similar stellar/orbital and planetary parameters the two systems may also have a similar exoplanetary atmospheric composition.
description: ApJ accepted, 4 figures
$B\to S$ Transition Form Factors in the PQCD approach
Creators: name: Li, Run-Hui
name: Lü, Cai-Dian
name: Wang, Wei
name: Wang, Xiao-Xia
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Under two different scenarios for the light scalar mesons, we investigate the transition form factors of $B(B_s)$ mesons decay into a scalar meson in the perturbative QCD approach. In the large recoiling region, the form factors are dominated by the short-distance dynamics and can be calculated using perturbation theory. We adopt the dipole parametrization to recast the $q^2$ dependence of the form factors. Since the decay constants defined by the scalar current are large, our predictions on the $B\to S$ form factors are much larger than the $B\to P$ transitions, especially in the second scenario. Contributions from various light-cone distribution amplitudes (LCDAs) are elaborated and we find that the twist-3 LCDAs provide more than a half contributions to the form factors. The two terms of the twist-2 LCDAs give destructive contributions in the first scenario while they give constructive contributions in the second scenario. With the form factors, we also predict the decay width and branching ratios of the semileptonic $B\to Sl\barν$ and $B\to Sl^+l^-$ decays. The branching ratios of $B\to Sl\barν$ channels are found to have the order of $10^{-4}$ while those of $B\to Sl^+l^-$ have the order of $10^{-7}$. These predictions can be tested by the future experiments.
description: 20 pages, 31 figures
Generalized particle dynamics: modifying the motion of particles and branes
Creators: name: Das, Sudipta
name: Ghosh, Subir
name: van Holten, Jan-Willem
name: Pal, Supratik
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct a generalized dynamics for particles moving in a symmetric space-time, i.e. a space-time admitting one or more Killing vectors. The generalization implies that the effective mass of particles becomes dynamical. We apply this generalized dynamics to the motion of test particles in a static, spherically symmetric metric. A significant consequence of the new framework is to generate an effective negative pressure on a cosmological surface whose expansion is manifest by the particle trajectory via embedding geometry \cite{bwg,embed2,embed,pal}. This formalism thus may give rise to a source for dark energy in modeling the late accelerating universe.
description: 17 pages, 2 figures. Minor revisions. To appear in JHEP
Mini-Workshop: Statistical Methods for Inverse Problems
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2006
Subjects: subject: Konferenzschrift
subject: 510

description: Inverse problems appear naturally in a broad range of applications. Numerical analysis and statistics have – often independently – developed methods for regularisation and inversion. The aim of this mini-workshop is to bring together these methods and to consider their use in applications, with a focus on mathematical finance.
Effect of K Doping on Phonons in Ba1-xKxFe2As2
Creators: name: Lee, Chul-Ho
name: Kihou, Kunihiro
name: Horigane, Kazumasa
name: Tsutsui, Satoshi
name: Fukuda, Tatsuo
name: Eisaki, Hiroshi
name: Iyo, Akira
name: Yamaguchi, Hirotaka
name: Baron, Alfred Q. R.
name: Braden, Markus
name: Yamada, Kazuyoshi
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The lattice dynamics of Ba1-xKxFe2As2 (x = 0.00, 0.27) have been studied by inelastic X-ray scattering measurement at room temperature. K doping induces the softening and broadening of phonon modes in the energy range E = 10-15 meV. Analysis with a Born-von Karman force-constant model indicates that the softening results from reduced interatomic force constants around (Ba,K) sites following the displacement of divalent Ba by monovalent K. The phonon broadening may be explained by the local distortions induced by the K substitution. Extra phonon modes are observed around the wave vector q = (0.5,0,0) at E = 16.5 meV for the x = 0.27 sample. These modes may arise either from the local disorder induced by K doping or from electron-phonon coupling.
description: J. Phys. Soc. Jpn. (in press)
Material Theories
Creators: name: (:Unkn) Unknown
Publisher: name: Zürich : EMS Publ. House
Year: 2007
Subjects: subject: Konferenzschrift
subject: 510

description: The workshop reviewed classical and recent trends in the modeling of material behavior using a wide spectrum of mathematical tools (stochastic processes, calculus of variations, pde’s). Among the topic covered, the following figured prominently: biology and biophysics, mechanics of nanostuctures, crystal plasticity, self-organized criticality, non equilibrium statistical mechanics, quantum mechanics, wetting phenomena, electronic transport in semiconductors, dislocation mechanics, kinetic theory, bucking in structural mechanics.
Configuration Complexities of Hydrogenic Atoms
Creators: name: Dehesa, J. S.
name: Lopez-Rosa, S.
name: Manzano, D.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The Fisher-Shannon and Cramer-Rao information measures, and the LMC-like or shape complexity (i.e., the disequilibrium times the Shannon entropic power) of hydrogenic stationary states are investigated in both position and momentum spaces. First, it is shown that not only the Fisher information and the variance (then, the Cramer-Rao measure) but also the disequilibrium associated to the quantum-mechanical probability density can be explicitly expressed in terms of the three quantum numbers (n, l, m) of the corresponding state. Second, the three composite measures mentioned above are analytically, numerically and physically discussed for both ground and excited states. It is observed, in particular, that these configuration complexities do not depend on the nuclear charge Z. Moreover, the Fisher-Shannon measure is shown to quadratically depend on the principal quantum number n. Finally, sharp upper bounds to the Fisher-Shannon measure and the shape complexity of a general hydrogenic orbital are given in terms of the quantum numbers.
description: 22 pages, 7 figures, accepted in