cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Franz Bömer, P. Ovidius Naso. Metamorphosen. Kommentar von Franz Bömer †. Addenda, Corrigenda, Indices. Teil I: Addenda und Corrigenda. Aufgrund der Vorarbeiten von Franz Bömer zusammengestellt durch Ulrich Schmitzer
Creators: name: Dräger, Paul
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Franz Bömer, P. Ovidius Naso. Metamorphosen. Kommentar von Franz Bömer †. Addenda, Corrigenda, Indices. Teil I: Addenda und Corrigenda. Aufgrund der Vorarbeiten von Franz Bömer zusammengestellt durch Ulrich Schmitzer. Wissenschaftliche Kommentare zu griechischen und lateinischen Schriftstellern. Heidelberg: Winter 2006, 352 S., 2 Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 9 (2006): Göttinger Forum für Altertumswissenschaft
Note on massless bosonic states in two-dimensional field theories
Creators: name: Fukaya, Hidenori
name: Hayakawa, Masashi
name: Kanamori, Issaku
name: Suzuki, Hiroshi
name: Takimi, Tomohisa
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: In a wide class of $G_L\times G_R$ invariant two-dimensional super-renormalizable field theories, the parity-odd part of the two-point function of global currents is completely determined by a fermion one-loop diagram. For any non-trivial fermion content, the two-point function possesses a massless pole which corresponds to massless bosonic physical states. As an application, we show that two-dimensional $\mathcal{N}=(2,2)$ supersymmetric gauge theory without a superpotential possesses $U(1)_L\times U(1)_R$ symmetry and contains one massless bosonic state per fixed spatial momentum. The $\mathcal{N}=(4,4)$ supersymmetric pure Yang-Mills theory possesses $SU(2)_L\times SU(2)_R$ symmetry, and there exist at least three massless bosonic states.
description: 17pages, 4 figures, uses PTPTeX.cls and feynMF, added an appendix
Additional file 2 of Revealing taxon-specific heavy metal-resistance mechanisms in denitrifying phosphorus removal sludge using genome-centric metaproteomics
Creators: name: Lin, Yuan
name: Wang, Liye
name: Xu, Ke
name: Li, Kan
name: Ren, Hongqiang
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Ecology
subject: Astronomical and Space Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. Supplementary information.
Relativistic Diskoseismology. III. Low-Frequency Fundamental p-Modes
Creators: name: Ortega-Rodriguez, Manuel
name: Silbergleit, Alexander S.
name: Wagoner, Robert V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We extend our investigation of the normal modes of small adiabatic oscillations of relativistic barotropic thin accretion disks to the inertial-pressure (p) modes. We focus here on the lowest frequency fundamental p-modes, those with no axial or vertical nodes in their distribution. Through a variety of analyses, we obtain closed-form expressions for the eigenfrequencies and eigenfunctions. These depend on the luminosity and viscosity parameter of the disk as well as the mass and angular momentum of the black hole via detailed formulae for the speed of sound. The effect of a torque on the inner edge of the disk is also included. We compare the p-mode properties to those of the g- and c-modes.
description: 42 pages, 15 figures
Effective field theory versus UV-complete model: vector boson scattering as a case study
Creators: name: Lang, Jannis
name: Liebler, Stefan
name: Schäfer-Siebert, Heiko
name: Zeppenfeld, Dieter
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Effective field theories (EFT) are commonly used to parameterize effects of BSM physics in vector boson scattering (VBS). For Wilson coefficients which are large enough to produce presently observable effects, the validity range of the EFT represents only a fraction of the energy range covered by the LHC, however. In order to shed light on possible extrapolations into the high energy region, a class of UV-complete toy models, with extra SU(2) multiplets of scalars or of fermions with vector-like weak couplings, is considered. By calculating the Wilson coefficients up to energy-dimension eight, and full one-loop contributions to VBS due to the heavy multiplets, the EFT approach, with and without unitarization at high energy, is compared to the perturbative prediction. For high multiplicities, e.g. nonets of fermions, the toy models predict sizable effects in transversely polarized VBS, but only outside the validity range of the EFT. At lower energies, dimension-eight operators are needed for an adequate description of the models, providing another example that dimension-eight can be more important than dimension-six operators. A simplified VBFNLO implementation is used to estimate sensitivity of VBS to such BSM effects at the LHC. Unitarization captures qualitative features of the toy models at high energy but significantly underestimates signal cross sections in the threshold region of the new particles.
description: 39 pages, 13 figures
Cosmology with Light Axions from Technicolor
Creators: name: Davoudiasl, Hooman
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider cosmological consequences of the spontaneous breaking of a global symmetry that is anomalous under technicolor interactions, leading to the emergence of a light axion-like particle. Avoiding overclosure of the universe by such axions yields the upper bound $f_a \lsim 10^{10}$ GeV on the symmetry breaking scale, corresponding to keV-scale axions. However, diffuse x-ray background data typically require larger values of $f_a$. The overclosure and x-ray bounds can be reconciled if the axion initial amplitude of oscillations $A_i \sim f_a/10$. In this case, a viable axionic dark matter candidate with a mass in the 50-100 eV range emerges. The detection of this type of dark matter may pose a challenge.
description: RevTex, 5 pages. Expanded and modified abstract and introduction, results and conclusions unchanged
Jens-Olaf Lindermann, Aulus Gellius: Noctes Atticae, Buch 9. Kommentar
Creators: name: Pausch, Dennis
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Jens-Olaf Lindermann, Aulus Gellius: Noctes Atticae, Buch 9. Kommentar. Berlin: Weißensee Verlag 2006, 421 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 9 (2006): Göttinger Forum für Altertumswissenschaft
Ulrike Riemer, Die römische Germanienpolitik. Von Caesar bis Commodus
Creators: name: Matijević, Krešimir
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Ulrike Riemer, Die römische Germanienpolitik. Von Caesar bis Commodus. Darmstadt: Wissenschaftliche Buchgesellschaft 2006, 167 S., 17 s/w-Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 9 (2006): Göttinger Forum für Altertumswissenschaft
Basic notions of Poisson and symplectic geometry in local coordinates, with applications to Hamiltonian systems
Creators: name: Deriglazov, Alexei A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Symplectic Geometry (math.SG)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: This work contains a brief and elementary exposition of the foundations of Poisson and symplectic geometries, with an emphasis on applications for Hamiltonian systems with second-class constraints. In particular, we clarify the geometric meaning of the Dirac bracket on a symplectic manifold and provide a proof of the Jacobi identity on a Poisson manifold. A number of applications of the Dirac bracket are described: applications for the proof of the compatibility of a system consisting of differential and algebraic equations, as well as applications for the problem of reduction of a Hamiltonian system with known integrals of motion.
description: 35 pages, matches with published version, typos fixed
Energy stable and accurate coupling of finite element methods and finite difference methods
Creators: name: Dao, Tuan Anh
name: Mattsson, Ken
name: Nazarov, Murtazo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: G.1.8
subject: 34A45

description: We introduce a hybrid method to couple continuous Galerkin finite element methods and high-order finite difference methods in a nonconforming multiblock fashion. The aim is to optimize computational efficiency when complex geometries are present. The proposed coupling technique requires minimal changes in the existing schemes while maintaining strict stability, accuracy, and energy conservation. Results are demonstrated on linear and nonlinear scalar conservation laws in two spatial dimensions.
Aspects of the seed Biology of orchard-produced sitka spruce seeds
Creators: name: Chaisurisri, Kowit
Publisher: name: University of British Columbia
Year: 2008

description: Biological aspects of orchard-produced Sitka spruce (Picea sitchensis (Bong.) Carr.) seeds were studied for one seed orchard located on the Saanich Peninsula of Vancouver Island, B.C. These aspects include: the determination the level of genetic diversity in the orchard population and its comparison to the species' range estimates, the estimation of the degree of inbreeding in the orchard, seed and cone crop parental balance over t w o crop years, the genetic control of germination parameters and seed size , the impact of simulated long-term storage on the genetic constitution of bulk seed crops , and the relationships between seed size and genetic origin on their seedling attributes. It was found that: (1 ) Most of the polymorphic allozyme markers investigated segregated according to the expected Mendelian ratio, and no linkage between any pair of these loci was observed; (2) The level of genetic diversity present in the seed orchard population indicated that phenotypic selection of parent trees did not reduce the level of diversity; (3) Significant rates of outcrossing were detected in the seed orchard population ( t „ = 0 . 8 7 5 ) . Most of this inbreeding occurred in lower branches; (4) Parental imbalance was found for the two crops investigated, however, improvement over time was observed, indicating an age effect; (5) Germination parameters (GC, P V and GV) and seed size were under genetic control with estimates of broad-sense heritabilities of 0 . 74 - 0.78 and 0.36 , respectively; (6) Artificial aging of seed (i.e., accelerated aging) indicated that reduction in rates of germination were clone-specific; and (7) Seed size showed no effect on seedling attributes, but a significant effect on germination speed was observed.
Thomas Schirren, Philosophos Bios. Die antike Philosophenbiographie als symbolische Form. Studien zur 'Vita Apollonii' des Philostrat
Creators: name: Schorn, Stefan
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Thomas Schirren, Philosophos Bios. Die antike Philosophenbiographie als symbolische Form. Studien zur 'Vita Apollonii' des Philostrat. Bibliothek der Klassischen Altertumswissenschaft n.F. II 115. Heidelberg: Winter 2005, X + 372 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 9 (2006): Göttinger Forum für Altertumswissenschaft
Valerius Flaccus. Argonautiques. Introduction, texte et traduction rythmée, notes et index par Jean Soubiran
Creators: name: Dräger, Paul
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Valerius Flaccus. Argonautiques. Introduction, texte et traduction rythmée, notes et index par Jean Soubiran. Bibliothèque d’études classiques 33. Louvain, Paris, Dudley/Ma: Peeters 2002, 352 S. (69-203 mit Doppelzählung)
description: Göttinger Forum für Altertumswissenschaft, Bd. 9 (2006): Göttinger Forum für Altertumswissenschaft
Phase Transition to Exact Susy
Creators: name: Clavelli, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The anthropic principle is based on the observation that, within narrow bounds, the laws of physics are such as to have allowed the evolution of life. The string theoretic approach to understanding this observation is based on the expectation that the effective potential has an enormous number of local minima with different particle masses and perhaps totally different fundamental couplings and space time topology. The vast majority of these alternative universes are totally inhospitable to life, having, for example, vacuum energies near the natural (Planck) scale. The statistics, however, are assumed to be such that a few of these local minima (and not more) have a low enough vacuum energy and suitable other properties to support life. In the inflationary era, the "multiverse" made successive transitions between the available minima until arriving at our current state of low vacuum energy. String theory, however, also suggests that the absolute minimum of the effective potential is exactly supersymmetric. Questions then arise as to why the inflationary era did not end by a transition to one of these, when will the universe make the phase transition to the exactly supersymmetric ground state, and what will be the properties of this final state.
description: To appear in Proceedings of Susy06, the 14th International Conference on Supersymmetry and the Unification of Fundamental Interactions, Ed. Jonathon L. Feng, American Institute of Physics, 2007
Power-law Parameterized Quintessence Model
Creators: name: Rahvar, Sohrab
name: Movahed, M. Sadegh
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We introduce a power-law parameterized quintessence model for the dark energy which accelerate universe at the low redshifts while behaves as an ordinary matter for the early universe. We construct a unique scalar potential for this parameterized quintessence model. As the observational test, the Supernova Type Ia (SNIa) Gold sample data, size of baryonic acoustic peak from Sloan Digital Sky Survey (SDSS), the position of the acoustic peak from the CMB observations and structure formation from the 2dFGRS survey are used to constrain the parameters of the quintessence model. The best fit parameters indicates that the equation of state of this model at the present time is less than one $(w_0
description: 11 pages, 17 figures, submitted to Phys. Rev. D
Thermal Trigger for Solar Flares I: Fragmentation of the Preflare Current Layer
Creators: name: Ledentsov, Leonid
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We consider the effects of the heat balance on the structural stability of a preflare current layer. The problem of small perturbations is solved in the piecewise homogeneous MHD approximation taking into account the viscosity, the electrical and thermal conductivity, and the radiative cooling. Solution of the problem allows the formation of an instability of a thermal nature. There is no external magnetic field inside the current layer in equilibrium state, but it can penetrate inside when the current layer is disturbed. Formation of a magnetic field perturbation inside the layer creates a dedicated frequency in a broadband disturbance subject to thermal instability. In the linear phase, the growth time of the instability is proportional to the characteristic time of radiative cooling of plasma and depends on the logarithmic derivatives of the radiative cooling function with respect to the plasma parameters. The instability results in transverse fragmentation of the current layer with a spatial period of 1-10 Mm along the layer in a wide range of coronal plasma parameters. The role of that instability in the triggering for the primary energy release in solar flares is discussed.
description: This is a post-peer-review, pre-copyedit version of an article published in Solar Physics
Three-dimensional Magnetohydrodynamic Simulations of Cold Fronts in Magnetically Turbulent ICM
Creators: name: Asai, Naoki
name: Fukuda, Naoya
name: Matsumoto, Ryoji
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Steep gradients of temperature and density, called cold fronts, are observed by Chandra in a leading edge of subclusters moving through the intracluster medium (ICM). The presence of cold fronts indicates that thermal conduction across the front is suppressed by magnetic fields. We carried out three-dimensional magnetohydrodynamic (MHD) simulations including anisotropic thermal conduction of a subcluster moving through a magnetically turbulent ICM. We found that turbulent magnetic fields are stretched and amplified by shear flows along the interface between the subcluster and the ambient ICM. Since magnetic fields reduce the efficiency of thermal conduction across the front, the cold front survives at least 1 Gyr. We also found that a moving subcluster works as an amplifier of magnetic fields. Numerical results indicate that stretched turbulent magnetic fields accumulate behind the subcluster and are further amplified by vortex motions. The moving subcluster creates a long tail of ordered magnetic fields, in which the magnetic field strength attains plasma beta < 10.
description: 17 pages, 9 figures, accepted for publication in ApJ. For a version with high quality figures, see http://www.astro.phys.s.chiba-u.ac.jp/~asai/astro-ph-apj07.html
„Aus dem Freund ein Sohn“. Theodor Mommsen und Ulrich von Wilamowitz-Moellendorff. Briefwechsel 1872-1903. Herausgegeben und kommentiert von William M. Calder III und Robert Kirstein
Creators: name: Dräger, Paul
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: „Aus dem Freund ein Sohn“. Theodor Mommsen und Ulrich von Wilamowitz-Moellendorff. Briefwechsel 1872-1903. Herausgegeben und kommentiert von William M. Calder III und Robert Kirstein. Hildesheim: Weidmann 2003, 2 Bde., 763 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 9 (2006): Göttinger Forum für Altertumswissenschaft
Effects of orbital occupancies on the neutrinoless beta-beta matrix element of 76Ge
Creators: name: Suhonen, J.
name: Civitarese, O.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this work we use the recently measured neutron occupancies in the 76Ge and 76Se nuclei as a guideline to define the neutron quasiparticle states in the 1p0f0g shell. We define the proton quasiparticles by inspecting the odd-mass nuclei adjacent to 76Ge and 76Se. We insert the resulting quasiparticles in a proton-neutron quasiparticle random-phase approximation (pnQRPA) calculation of the nuclear matrix element of the neutrinoless double beta (0-nu-beta-beta) decay of 76Ge. A realistic model space and effective microscopic two-nucleon interactions are used. We include the nucleon-nucleon short-range correlations and other relevant corrections at the nucleon level. It is found that the resulting 0-nu-beta-beta matrix element is smaller than in the previous pnQRPA calculations, and closer to the recently reported shell-model results.
description: To appear in Physics Letters B
Guaranteed $\mathcal{H}_\infty$ performance analysis and controller synthesis for interconnected linear systems from noisy input-state data
Creators: name: Steentjes, Tom R. V.
name: Lazar, Mircea
name: Hof, Paul M. J. Van den
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The increase in available data and complexity of dynamical systems has sparked the research on data-based system performance analysis and controller design. Recent approaches can guarantee performance and robust controller synthesis based on noisy input-state data of a single dynamical system. In this paper, we extend a recent data-based approach for guaranteed performance analysis to distributed analysis of interconnected linear systems. We present a new set of sufficient LMI conditions based on noisy input-state data that guarantees $\mathcal{H}_\infty$ performance and have a structure that lends itself well to distributed controller synthesis from data. Sufficient LMI conditions based on noisy data are provided for the existence of a dynamic distributed controller that achieves $\mathcal{H}_\infty$ performance. The presented approach enables scalable analysis and control of large-scale interconnected systems from noisy input-state data sets.
Identity dynamics and the emergence of new organizational arrangements: A multi-level study
Creators: name: Dosi, Clio <1986>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: ING-IND/35 Ingegneria economico-gestionale

description: Organizational and institutional scholars have advocated the need to examine how processes originating at an individual level can change organizations or even create new organizational arrangements able to affect institutional dynamics (Chreim et al., 2007; Powell & Colyvas, 2008; Smets et al., 2012). Conversely, research on identity work has mainly investigated the different ways individuals can modify the boundaries of their work in actual occupations, thus paying particular attention to ‘internal’ self-crafting (e.g. Wrzesniewski & Dutton, 2001). 
Drawing from literatures on possible and alternative self and on positive organizational scholarship (e.g., Obodaru, 2012; Roberts & Dutton, 2009), my argument is that individuals’ identity work can go well beyond the boundaries of internal self-crafting to the creation of new organizational arrangements.

In this contribution I analyze, through multiple case studies, healthcare professionals who spontaneously participated in the creation of new organizational arrangements, namely health structures called Community Hospitals. 
The contribution develops this form of identity work by building a grounded model.

My findings disclose the process that leads from the search for the enactment of different self-concepts to positive identities, through the creation of a new organizational arrangement. I contend that this is a particularly complex form of collective identity work  because it requires, to be successful, concerted actions of several internal, external and institutional actors, and it also requires balanced tensions that – at the same time - enable individuals’ aspirations and organizational equilibrium. I name this process organizational collective crafting.
Moreover I inquire the role of context in supporting the triggering power of those unrealized selves.

I contribute to the comprehension of the consequences of self-comparisons, organizational identity variance, and positive identity.
The study bears important insights on how identity work originating from individuals can influence organizational outcomes and larger social systems.
Making Leaps in Scientific Productivity through Scalable Computation and Data
Creators: name: Evans, Ben
Publisher: name: Zenodo
Year: 2018

description: Through NCRIS programs, we have established a large collection of reference datasets next to NCI’s peak computing capability so to provide a significant improvement to the accessibility of climate, weather, geophysics and environmental data in a form suitable for HPC modelling and modern high performance data analysis. These FAIR datasets and services have since become a central infrastructure which is used by the climate community, many NCRIS capabilities (e.g, IMOS, TERN, AuScope, AAL), and government programs (e.g., weather prediction, Digital Earth Australia). As a result there are now significant successes in productivity of scientific outcomes through adoption of these national investment in HPC and data products. The colocating of scientific datasets with HPC computational infrastructure has a long and steady timeline with deepening alignment to demonstrate the success of the approach. Furthermore, the historical disconnect in approaches between the sciences with large volume data and that of the long tail of data are also now steadily closing. The standards for interoperability and interconnectivity between scientific fields have been slowly maturing, and in many cases transdisciplinary science is now a reality. The technical infrastructure for underpinning science is no longer advancing according to Moore’s law (and equivalents) and is evolving in unexpected ways - affecting both HPC models and data. These have required us to consider our software and algorithms, increasing our effort for improvements and maintainability, and reconsidering some old assumptions of data precision and reproducibility. In this talk I will discuss the journey so far and challenges ahead.
Algebraic statistical models
Creators: name: Drton, Mathias
name: Sullivant, Seth
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Many statistical models are algebraic in that they are defined in terms of polynomial constraints, or in terms of polynomial or rational parametrizations. The parameter spaces of such models are typically semi-algebraic subsets of the parameter space of a reference model with nice properties, such as for example a regular exponential family. This observation leads to the definition of an `algebraic exponential family'. This new definition provides a unified framework for the study of statistical models with algebraic structure. In this paper we review the ingredients to this definition and illustrate in examples how computational algebraic geometry can be used to solve problems arising in statistical inference in algebraic models.
On estimating redshift and luminosity distributions in photometric redshift surveys
Creators: name: Sheth, Ravi K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The luminosity functions of galaxies and quasars provide invaluable information about galaxy and quasar formation. Estimating the luminosity function from magnitude limited samples is relatively straightforward, provided that the distances to the objects in the sample are known accurately; techniques for doing this have been available for about thirty years. However, distances are usually known accurately for only a small subset of the sample. This is true of the objects in the Sloan Digital Sky Survey, and will be increasingly true of the next generation of deep multi-color photometric surveys. Estimating the luminosity function when distances are only known approximately (e.g., photometric redshifts are available, but spectroscopic redshifts are not) is more difficult. I describe two algorithms which can handle this complication: one is a generalization of the V_max algorithm, and the other is a maximum likelihood approach. Because these methods account for uncertainties in the distance estimate, they impact a broader range of studies. For example, they are useful for studying the abundances of galaxies which are sufficiently nearby that the contribution of peculiar velocity to the spectroscopic redshift is not negligible, so only a noisy estimate of the true distance is available. In this respect, peculiar velocities and photometric redshift errors have similar effects. The methods developed here are also useful for estimating the stellar luminosity function in samples where accurate parallax distances are not available.
description: 9 pages, 6 figures, submitted to MNRAS
The relationships between the ecological site quality and the site index and stem form of red alder in southwestern B.C.
Creators: name: Courtin, P. J.
Publisher: name: University of British Columbia
Year: 2008

description: Site, soil, tree form, vegetation and foliar data were collected from thirty-seven natural stands of red alder (Alnus rubra Bong.) from three biogeo climatic subzones on Vancouver Island and the adjacent mainland of British Columbia. Based on temperature and precipitation normals, three subzones of the Coastal Western Hemlock zone are suggested as being the most suitable for the growth of red alder. The results of quantitative analyses between different site variables indicate that a major factor accounting for the majority of variance in the data is soil reaction. When the stands were divided into two groups based on pH, the majority of variation in site index was explained for both soil and foliar nutrient variables. Other variables had weak correlations with site index. Soil morphological and physical data were not sufficient to predict site index, and the use of soil moisture and nutrient regimes as categorical variables in site index regressions gave insignificant results. Diagnostic criteria applied to the understory vegetation of the stands could not differentiate site classes nor were stands differentiated on the basis of soil reaction group which seemed to dominate the separation of both soil and foliar variables. This is due to red alder's N-fixing ability, which tends to promote species having nutrient rich indicative value regardless of site. Tentative vegetation associations are proposed but the irrecognition needs further testing. The relationship between four measures of tree form of red alder with other variable domains did not indicate meaningful results. The hypothesis that form of alder differs with site cannot be accepted based on these data. The synthesis of a qualitative site assessment for estimating the potential productivity of red alder was approached from the recognition of soil parent materials while incorporating soil physical and morphological properties already in use infield guides.
Friedhelm Prayon, Die Etrusker. Jenseitsvorstellungen und Ahnenkult
Creators: name: Steinhart, Matthias
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Friedhelm Prayon, Die Etrusker. Jenseitsvorstellungen und Ahnenkult. Zaberns Bildbände zur Archäologie. Mainz: Philipp von Zabern 2006, IV, 124 S., 87 Farb-, 18 Schwarzweiß- und 19 Strichabbildungen.
description: Göttinger Forum für Altertumswissenschaft, Bd. 9 (2006): Göttinger Forum für Altertumswissenschaft
Exemplars can Reciprocate Principal Components
Creators: name: Greer, Kieran
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: This paper presents a clustering algorithm that is an extension of the Category Trees algorithm. Category Trees is a clustering method that creates tree structures that branch on category type and not feature. The development in this paper is to consider a secondary order of clustering that is not the category to which the data row belongs, but the tree, representing a single classifier, that it is eventually clustered with. Each tree branches to store subsets of other categories, but the rows in those subsets may also be related. This paper is therefore concerned with looking at that second level of clustering between the other category subsets, to try to determine if there is any consistency over it. It is argued that Principal Components may be a related and reciprocal type of structure, and there is an even bigger question about the relation between exemplars and principal components, in general. The theory is demonstrated using the Portugal Forest Fires dataset as a case study. The Category Trees are then combined with other Self-Organising algorithms from the author and it is suggested that they all belong to the same family type, which is an Entropy-style of classifier.
Dirk Steuernagel, Kult und Alltag in römischen Hafenstädten. Soziale Prozesse in archäologischer Perspektive
Creators: name: Rieger, Anna-Katharina
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Dirk Steuernagel, Kult und Alltag in römischen Hafenstädten. Soziale Prozesse in archäologischer Perspektive. (= Potsdamer Altertumswissenschaftliche Beiträge, Band 11, herausgegeben von Pedro Barceló, Peter Riemer, Jörg Rüpke und John Scheid). Stuttgart: Franz Steiner Verlag 2004, 287 S., 26 Abb., 12 Tafeln.
description: Göttinger Forum für Altertumswissenschaft, Bd. 9 (2006): Göttinger Forum für Altertumswissenschaft
Reheating Metastable O'Raifeartaigh Models
Creators: name: Craig, Nathaniel J.
name: Fox, Patrick J.
name: Wacker, Jay G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In theories with multiple vacua, reheating to a temperature greater than the height of a barrier can stimulate transitions from a desirable metastable vacuum to a lower energy state. We discuss the constraints this places on various theories and demonstrate that in a class of supersymmetric models this transition does not occur even for arbitrarily high reheating temperature.
description: 21 pages, 1 figure. Typos corrected and some references added
Adolf Hoffmann (Hrsg.), Ägyptische Kulte und ihre Heiligtümer im Osten des Römischen Reiches
Creators: name: Steuernagel, Dirk
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Adolf Hoffmann (Hrsg.), Ägyptische Kulte und ihre Heiligtümer im Osten des Römischen Reiches. Internationales Kolloquium 5./6. September 2003 in Bergama (Türkei). Byzas 1. Istanbul: Ege Yaynlar 2005, 283 S., zahlreiche s/w-Abb.
description: Göttinger Forum für Altertumswissenschaft, Bd. 9 (2006): Göttinger Forum für Altertumswissenschaft
Peter van Nuffelen, Un héritage de paix et de piété. Etude sur les histoires ecclésiastiques de Socrate et de Sozomène
Creators: name: Bleckmann, Bruno
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Peter van Nuffelen, Un héritage de paix et de piété. Etude sur les histoires ecclésiastiques de Socrate et de Sozomène. Orientalia Lovaniensia Analecta 142. Leuven/Paris/Dudley, MA: Uitgeverij Peeters 2004, LXXX + 583 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 9 (2006): Göttinger Forum für Altertumswissenschaft
Can a single molecule trap the electron?
Creators: name: Shkrob, Ilya A.
name: Schlueter, John A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We suggest that it might be possible to trap the electron in a cavity of a macrocycle molecule, in the same way this trapping occurs cooperatively, by several solvent molecules, in hydroxylic liquids. Such an encapsulated electron is a "molecular capacitor," in which the excess electron is largely decoupled from valence electrons in the trap. A specific design for such a trap that is based on calix[4]cyclohexanol is discussed in detail. It is shown theoretically, by ab initio and density functional theory (DFT) modeling, that one of the conformations of this molecule forms the optimum tetrahedral trap for the electron. The resulting "encapsulated electron" strikingly resembles the solvated electron in alcohols and water.
description: 13 pages 2 tables 5 figures, submitted to Chem Phys Lett
Dissipative stabilization of squeezing beyond 3 dB in a microwave mode
Creators: name: Dassonneville, R.
name: Assouly, R.
name: Peronnin, T.
name: Clerk, A. A.
name: Bienfait, A.
name: Huard, B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: While a propagating state of light can be generated with arbitrary squeezing by pumping a parametric resonator, the intra-resonator state is limited to 3 dB of squeezing. Here, we implement a reservoir engineering method to surpass this limit using superconducting circuits. Two-tone pumping of a three-wave-mixing element implements an effective coupling to a squeezed bath which stabilizes a squeezed state inside the resonator. Using an ancillary superconducting qubit as a probe allows us to perform a direct Wigner tomography of the intra-resonator state. The raw measurement provides a lower bound on the squeezing at about $6.7 \pm 0.2$ dB below the zero-point level. Further, we show how to correct for resonator evolution during the Wigner tomography and obtain a squeezing as high as $8.2 \pm 0.8$ dB. Moreover, this level of squeezing is achieved with a purity of $-0.4 \pm 0.4$ dB.
Quark-Gluon Bags with Surface Tension
Creators: name: Bugaev, Kyrill
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The temperature and chemical potential dependent surface tension of bags is introduced into the gas of quark-gluon bags model. This resolves a long standing problem of a unified description of the first and second order phase transition with the cross-over. Such an approach is necessary to model the complicated properties of quark-gluon plasma and hadronic matter from the first principles of statistical mechanics. The suggested model has an exact analytical solution and allows one to rigorously study the vicinity of the critical endpoint of the deconfinement phase transition. The existence of higher order phase transitions at the critical endpoint is discussed. In addition, we found that at the curve of a zero surface tension coefficient there must exist the surface induced phase tranition of the 2$^{nd}$ or higher order, which separates the pure quark gluon plasma (QGP) from the cross-over states, that are the mixed states of hadrons and QGP bags. Thus, the present model predicts that the critical endpoint of quantum chromodynamics is the tricritical endpoint.
description: 10 pages, 5 figures
William W. Fortenbaugh, Stephen A. White (eds.), 'Aristo of Ceos: Text, Translation, and Discussion'
Creators: name: Volt, Ivo
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: William W. Fortenbaugh, Stephen A. White (eds.), 'Aristo of Ceos: Text, Translation, and Discussion'. RUSCH (Rutgers University studies in classical humanities), vol. 13. New Brunswick and London: Transaction Publishers, 2006, X + 373 p.
description: Göttinger Forum für Altertumswissenschaft, Bd. 9 (2006): Göttinger Forum für Altertumswissenschaft
Deformed relativistic Hartree-Bogoliubov model for exotic nuclei
Creators: name: Zhou, Shan-Gui
name: Meng, Jie
name: Ring, Peter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A deformed relativistic Hartree-Bogoliubov (DRHB) model is developed aiming at a proper description of exotic nuclei, particularly deformed ones with large spatial extension. In order to give an adequate description of both the contribution of the continuum and the large spatial distribution in exotic nuclei, the DRHB equations are solved in a Woods-Saxon basis in which the radial wave functions have proper asymptotic behaviors at large distance from the nuclear center which is crucial for the formation of halo. The formalism and the numerical procedure of the DRHB model in a Woods-Saxon basis are briefly presented.
description: 7 pages, 1 EPS figure; to be published by World Scientific Publisher in the Proceedings of International Symposium on the Physics of Unstable Nuclei (ISPUN07), Jul. 3-7, 2007, Hoi An, Vietnam
Chromospheric and coronal heating and jet acceleration due to reconnection driven by flux cancellation. II. Cancellation of two magnetic polarities of unequal flux
Creators: name: Syntelis, P.
name: Priest, E. R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context. Recent observations have shown that magnetic flux cancellation occurs at the photosphere more frequently than previously thought. Aims. In order to understand the energy release by reconnection driven by flux cancellation, we previously studied a simple model of two cancelling polarities of equal flux. Here, we further develop our analysis to achieve a more general setup where the two cancelling polarities have unequal magnetic fluxes and where many new features are revealed. Methods. We carried out an analytical study of the cancellation of two magnetic fragments of unequal and opposite flux that approach one another and are located in an overlying horizontal magnetic field. Results. The energy release as microflares and nanoflares occurs in two main phases. During phase 1a, a separator is formed and reconnection is driven at it as it rises to a maximum height and then moves back down to the photosphere, heating the plasma and accelerating plasma jets in the process. During phase 1b, once the separator moves back to the photosphere, it bifurcates into two null points. Reconnection is no longer driven at the separator and an isolated magnetic domain connecting the two polarities is formed. During phase 2, the polarities cancel out at the photosphere as magnetic flux submerges below the photosphere and as reconnection occurs at and above the photosphere and plasma jets and a mini-filament eruption can be produced.
description: 12 pages, 10 figures
Mn incorporation in as-grown and annealed (Ga,Mn)As layers studied by x-ray diffraction and standing-wave uorescence
Creators: name: Holy, V.
name: Matej, Z.
name: Pacherova, O.
name: Novak, V.
name: Cukr, M.
name: Olejnik, K.
name: Jungwirth, T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A combination of high-resolution x-ray diffraction and a new technique of x-ray standing wave uorescence at grazing incidence is employed to study the structure of (Ga,Mn)As diluted magnetic semiconductor and its changes during post-growth annealing steps. We find that the film is formed by a uniform, single crystallographic phase epilayer covered by a thin surface layer with enhanced Mn concentration due to Mn atoms at random non-crystallographic positions. In the epilayer, Mn incorporated at interstitial position has a dominant effect on lattice expansion as compared to substitutional Mn. The expansion coeffcient of interstitial Mn estimated from our data is consistent with theory predictions. The concentration of interstitial Mn and the corresponding lattice expansion of the epilayer are reduced by annealing, accompanied by an increase of the density of randomly distributed Mn atoms in the disordered surface layer. Substitutional Mn atoms remain stable during the low-temperature annealing.
description: 9 pages, 9 figures
Dorothee Gall, Die Literatur in der Zeit des Augustus
Creators: name: Sigismund, Marcus
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Dorothee Gall, Die Literatur in der Zeit des Augustus. Klassische Philologie Kompakt. Darmstadt: Wissenschaftliche Buchgesellschaft 2006, VI + 184 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 9 (2006): Göttinger Forum für Altertumswissenschaft
Complete $α^7\,m$ Lamb shift of helium triplet states
Creators: name: Patkóš, Vojtěch
name: Yerokhin, Vladimir A.
name: Pachucki, Krzysztof
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have derived the complete formula for the $α^7\,m$ contribution to energy levels of an arbitrary triplet state of the helium atom, performed numerical calculations for the $2^3S$ and $2^3P$ states, and thus improved the theoretical accuracy of ionization energies of these states by more than an order of magnitude. Using the nuclear charge radius extracted from the muonic helium Lamb shift, we obtain the theoretical prediction in excellent agreement with the measured $2^3S - 2^3P$ transition energy [X.~Zheng et al., Phys. Rev. Lett. {\bf 199}, 263002 (2017)]. At the same time we observe significant discrepancies with experiments for the $2^3S- 3^3D$ and $2^3P - 3^3D$ transitions.
description: 10 pages, added a few references
Troubled cosmic flows: turbulence, enstrophy and helicity from the assembly history of the intracluster medium
Creators: name: Vallés-Pérez, David
name: Planelles, Susana
name: Quilis, Vicent
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Both simulations and observations have shown that turbulence is a pervasive phenomenon in cosmic scenarios, yet it is particularly difficult to model numerically due to its intrinsically multiscale character which demands high resolutions. Additionally, turbulence is tightly connected to the dynamical state and the formation history of galaxies and galaxy clusters, producing a diverse phenomenlogy which requires large samples of such structures to attain robust conclusions. In this work, we use an adaptive mesh refinement (AMR) cosmological simulation to explore the generation and dissipation of turbulence in galaxy clusters, in connection to its assembly history. We find that major mergers, and more generally accretion of gas, is the main process driving turbulence in the intracluster medium. We have especially focused on solenoidal turbulence, which can be quantified through enstrophy. Our results seem to confirm a scenario for its generation which involves baroclinicity and compression at the external (accretion) and internal (merger) shocks, followed by vortex stretching downstream of them. We have also looked at the infall of mass to the cluster beyond its virial boundary, finding that gas follows trajectories with some degree of helicity, as it has already developed some vorticity in the external shocks.
description: 19 pages, 12 figures; accepted for publication in MNRAS
Umberto Roberto (Hrsg.), Ioannis Antiocheni Fragmenta ex Historia chronica. Introduzione, edizione critica e traduzione
Creators: name: Bleckmann, Bruno
Publisher: name: Göttinger Forum für Altertumswissenschaft
Year: 2021

description: Rezension zu: Umberto Roberto (Hrsg.), Ioannis Antiocheni Fragmenta ex Historia chronica. Introduzione, edizione critica e traduzione. Berlin Brandenburgische Akademie der Wissenschaften. Texte und Untersuchungen zur Geschichte der altchristlichen Literatur 154. Berlin/New York: Walter de Gruyter 2005, CCXI + 661 S.
description: Göttinger Forum für Altertumswissenschaft, Bd. 9 (2006): Göttinger Forum für Altertumswissenschaft
Cosmology in two-dimensional dilaton gravity theories
Creators: name: Ahmed, M. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study some aspects of classical & quantum cosmology in the context of two-dimensionsal dilaton gravity theories with matter being described by a perfect fluid. We derive the classical equations obeyed by the metric function & the dilaton field. An impicit solution for the metric function is obtained & used to discuss possible expansion & contraction scenarios for the universe. Quantization is carried out & finite norm exact solutions of the Wheeler-DeWitt equation are obtained.
description: 19 pages