cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ormoceras heckeri Teichert 1930
Creators: name: Kröger, Björn
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Cephalopoda
Actinoceratida
Ormoceratidae
Ormoceras
Ormoceras heckeri

description: Ormoceras heckeri Teichert, 1930
Fig. 8E
Ormoceras heckeri Teichert, 1930: 290, pl. 7 fig. 21.
Ormoceras heckeri – Balashov 1953a: 211. ― Stumbur 1956: 176. ― Flower 1957: 11.
Diagnosis
Straight shell with circular cross section; siphuncular position subcentral, siphuncular segments barrel-shaped, approximately as high as long (SCR ca 1); septal necks very short and adnate to adoral surface of septa (Nybyoceras -like).
Material examined
ESTONIA • 2 specs; Paope quarry; Kõrgessaare Formation, Vormsi Regional Stage; TUG 1745-280, TUG 1745-281 • 1 spec.; Vormsi Island, Saxby shore; Kõrgessaare Formation, Vormsi Regional Stage; TUG 1680-19.
Type locality and horizon
Niibi, Estonia; Adila Formation, Pirgu Regional Stage.
Description
Specimen TUG 1680-19 (Fig. 8E) is a short fragment of the phragmocone without external characters preserved, with circular conch cross section and a diameter of 36 mm, the septa are ca 7 mm apart (RCL = 0.19), and the siphuncle is eccentrically positioned (RSP = 0.34). The septal necks are short adnate and the connecting ring forms barrel-shaped segments with a height of 8 mm (SCR = 1.14).
Specimen TUG 1745-281 is a fragment of a phragmocone 28 mm long, and increasing in diameter 20–23.5 mm (angle of expansion = 7°). The conch surface is not preserved. The sutures are directly transverse and straight with an RCL of 0.26. The septal foramen is nearly centrally positioned (RSP = 0.48) and has a diameter of 2 mm where the conch diameter is 22 mm. The septal necks are very short adnate, the connecting ring is not preserved.
Remarks
The species was described in detail by Teichert (1930). The new data suggest an ontogenetic change of the position of the siphuncle from central in early growth stages to eccentric in later growth stages.
description: Published as part of Kröger, Björn, 2025, The Lyckholm acme of cephalopods - Review of the late Katian (Vormsi-Pirgu regional stages) Ordovician cephalopods of Estonia, pp. 1-169 in European Journal of Taxonomy 978 on pages 20-21, DOI: 10.5852/ejt.2025.978.2801, http://zenodo.org/record/14988376
Mass ratio, the hills mechanism, and the galactic centre S-stars
Creators: name: Generozov, Aleksey
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Galactic centre contains several young populations within its central parsec: a disk between $\sim$0.05 and 0.5 pc from the centre, and the isotropic S-star cluster extending an order of magnitude further inwards in radius. Recent observations (i.e. spectroscopy and hypervelocity stars) suggest that some S-stars originate in the disk. In particular, the S-stars may be remnants of tidally disrupted disk binaries. However, there is an apparent inconsistency in this scenario: the disk contains massive O and Wolf--Rayet stars while the S-stars are lower mass, B stars. We explore two different explanations for this apparent discrepancy: (i) a built-in bias in binary disruptions, where the primary star remains closer in energy to the centre-of-mass orbit than the secondary and (ii) selective tidal disruption of massive stars within the S-star cluster. The first explanation is plausible. On the other hand, tidal disruptions have not strongly affected the mass distribution of the S-stars over the last several Myr.
description: This is a pre-copyedited, author-produced PDF of an article accepted for publication in MNRAS following peer review. The version of record [Generozov 2021, MNRAS 501 3088] is available online at: https://academic.oup.com/mnras/article-abstract/501/2/3088/6043223?redirectedFrom=PDF
Traditional Maize Storage Systems and Staple-Food Security in Ghana
Creators: name: Armah, Paul W.
name: Asante, Felix A.
name: Armah, Paul W.
name: Asante, Felix A.
Publisher: name: Unknown
Year: 2006
Subjects: Food Security and Poverty

description: Ghana is self-sufficient in the production of maize, the major staple food for many low-income Ghanaians, yet staple maize-availability projections in Ghana do not include insecurity problems in the post-harvest season caused by poor storage, distribution difficulties, and high prices. This study uses the concept of food "security-storage" relationships or an "availability-gap" to refer to the ability of poor Ghanaians to access stored maize in the post-harvest season. This estimated "availability-gap" measures available maize needed to raise food consumption of the poorest Ghanaians to the minimum nutritional requirement during the post-harvest season. However, maize price is usually highest in the post-harvest season when maize is not easily available. As a result, Ghanaians with increased poverty levels have insufficient purchasing power to access a minimally healthy maize diet in the post-harvest season. Therefore, ensuring easy availability of maize to the poor can scarcely be accomplished without sufficient maize stored in the post-harvest season to stabilize prices. This study evaluates how traditional maize storage efficiencies contribute to food security in Ghana by examining the economics of maize-storing systems. There is no standard method for appraising the efficiencies of the traditional maize-storage systems. As a result, this collaborative study between ASU and ISSER uses both direct and indirect analyses to allow cross-checking with each other. The systematic data-collection phase involves interviewing and observing traditional maize farmers and traders as they handle maize in Ghana. Images of traditional maize storage and distribution systems and policy recommendations are presented using visual media and digital technologies.
About one characteristic of set of linear differential systems with non-negative coefficients
Creators: name: Kopshaev, I.
name: Sultanbekova, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 34D08

description: The families of morphisms of vector fibre bundle (\cite{Mill1}) defined by the linear systems of differential equations with non-negative coefficients is considered. Authors proved that the specified families of morphisms is not saturated (\cite{Mill2}).
description: 1 page
Rural youth in transition : growing up in Williams Lake, British Columbia, 1945-1975
Creators: name: Arruda, Antonio Filomeno
Publisher: name: University of British Columbia
Year: 2009

description: Histories o f childhood and youth have generally focused upon social policy toward young people. This dissertation chronicles the actual experiences of youth growing up in and around Williams Lake in the Cariboo-Chilcotin region of British Columbia, a "western" community surrounded by open spaces, ranches, and Aboriginal reservations. Williams Lake underwent economic, demographic, spatial as well as social transformation in the first three decades following the Second World War. Forty-three oral interviews with two sets o f subjects who were adolescents in the study area furnished the bulk of the primary evidence. Most of the first "generation" were bom in the Great Depression and were teens sometime between 1945 and 1955. The second generation are "baby-boomers" bom between 1947 and 1962 who were teens between 1965 and 1975. This joint narrative details select aspects o f their lives at school, at paid and unpaid labour, with friends, and at leisure. It suggests changes and continuities in the experience of local youth between 1945 and 1975. First generation non-Aboriginal subjects grew up with a somewhat coherent peer group albeit with relatively little physical and social contact with Aboriginal youth. Gendered domestic labour around home and property honed work skills and dispositions from an early age. The emergence of local sawmills greatly expanded work options for males but not females. Males also enjoyed comparatively more spatial and temporal freedom throughout their youth. Second generation subjects grew up in a context of greater urbanization and access to mass culture. The merger of regional youth in the high school along with natural population growth, demographic change including the enrollment of first Aboriginal and then Indo-Canadian youth encouraged factions as well as cultural gulfs among youth in the school and community. Their leisure was comparatively less divided, at least on the basis of gender, as many non-Aboriginal parents eased traditional restrictions upon daughters. With notable exceptions this generation contributed less labour to their household and directed part- and full-time earnings into satisfying their own personal interests. The author suggests the pattern of youths' recreational use of hinterlands during the period reflects common practice in many Canadian communities located in similar rural and isolated settings. He illustrates how factors such as family affluence and circumstances, gender, "race" and ethnicity continued to mediate the experience of growing up in this post-war period. He concludes many more local accounts of the experiences of youth are needed before any attempt is made at an inclusive national historical synthesis of growing up in Canada after the Second World War.
title: Plate reverberators with adjustable features – concept of study and test stand
Creators: name: Korytkowski, Adam
name: Olszewski, Ryszard
name: Pluta, Marek
Publisher: name: Publishing House of Poznan University of Technology
Year: 2023

description: Vibrations in Physical Systems, 34(2), 2023204-1 - 2023204-9
U.S. Public Awareness and Knowledge of and Interest in Biotechnology: A Principal Component Factor Analysis
Creators: name: Onyango, Benjamin M.
name: Govindasamy, Ramu
name: Hallman, William K.
name: Onyango, Benjamin M.
name: Govindasamy, Ramu
name: Hallman, William K.
Publisher: name: Unknown
Year: 2006
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Unlike earlier surveys based studies on public attitudes and perceptions of biotechnology, this study investigates the importance of consumers' awareness and knowledge of and interest in biotechnology. Results suggest that Americans are largely unaware of both of the presence in their lives of GM food and of its wide application in food production. In view of this, many Americans would like to see more GM media coverage. Additionally, most Americans are unfamiliar with the laws and safety testing regarding GM food.
[Hupa audio recording]
Creators: name: Bright, William
name: Jackson, Ned
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2015
Subjects: subject: hup
subject: Hupa language

description: Wordlist with animals, common objects, seasons, numbers, cardinal directions, etc., as well as some minimal and near minimal pairs. Digital asset is higher quality than LA 12.001.
Broad-band spectra of Cyg X-1 and correlations between spectral characteristics
Creators: name: Ibragimov, Askar
name: Poutanen, Juri
name: Gilfanov, Marat
name: Zdziarski, Andrzej A.
name: Shrader, Chris R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of spectral analysis of 42 simultaneous broad-band Ginga--OSSE and RXTE--OSSE observations of Cyg X-1 carried out in 1991 and 1996--1999. The hardest spectra in our sample in the energy range from 3 to \~1000 keV can be well described by thermal Comptonization model with reflection from the cold disc, while the rest of the spectra are more complex and require an additional component below 10 keV. We consider a number of physically realistic models to describe the shape of the E<10 keV excess. The additional soft component can result from thermal Comptonization by electrons with a low Compton parameter, or can be a part of a nonthermal, power-law like emission extending above 1 MeV. We study correlations between parameters obtained from the spectral fits with different models. We confirm a general correlation between the photon index $Γ$ and the amplitude of reflection R. We find that simple phenomenological models (like power-law plus Compton reflection) applied to the narrow band (3--20 keV) data overestimated the values of R and $Γ$, although the simple models did rank correctly the spectra according to R and $Γ$. The dynamic corona model provides a satisfactory description of the observed correlation, while the hot inner disc models have problems in reproducing it quantitatively. We do not find significant correlation between the electron temperature and other spectral parameters, while the optical depth of the hot medium seems to decrease when the spectrum becomes softer. It is also shown that spectral parameters are well correlated with the timing characteristics of the source.
description: 17 pages, 11 figures, accepted to MNRAS. Changes to v2: added N_H notes, improved discussion on timing, new calibration used
Boltzmann bias grand canonical Monte Carlo
Creators: name: Garberoglio, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We derive an efficient method for the insertion of structured particles in grand canonical Monte Carlo simulations of adsorption in very confining geometries. We extend this method to path integral simulations and use it to calculate the isotherm of adsorption of hydrogen isotopes in narrow carbon nanotubes (2D confinement) and slit pores (1D confinement) at the temperatures of 20 K and 77 K, discussing its efficiency by comparison to the standard path integral grand canonical Monte Carlo algorithm. We use this algorithm to perform multicomponent simulations in order to calculate the hydrogen isotope selectivity for adsorption in narrow carbon nanotubes and slit pores at finite pressures. The algorithm described here can be applied to the study of adsorption of real oligomers and polymers in narrow pores and channels.
description: 12 pages, 6 figures. Accepted for publication in The Journal of Chemical Physics
A new model with solitary waves: solution, stability and quasinormal modes
Creators: name: Basak, Surajit
name: Roy, Poulami Dutta
name: Kar, Sayan
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct solitary wave solutions in a $1+1$ dimensional massless scalar ($ϕ$) field theory with a specially chosen potential $V(ϕ)$. The equation governing perturbations about this solitary wave has an effective potential which is a simple harmonic well over a region, and a constant beyond. This feature allows us to ensure the stability of the solitary wave through the existence of bound states in the well, which can be found by semi-analytical methods. A further check on stability is performed through our search for quasi-normal modes (QNM) which are defined for purely outgoing boundary conditions. The time-domain profiles of the perturbations and the parametric variation of the QNM values are presented and discussed in some detail. Expectedly, a damped oscillatory temporal behaviour (ringdown) of the fluctuations is clearly seen through our analysis of the quasi-normal modes.
description: Matches published version in European Physical Journal Plus
Exchange Rates and Interest Rates: where to now? Implications for Farmers, Miners and Manufacturers
Creators: name: Kerin, John
name: Kerin, John
Publisher: name: Unknown
Year: 1988
Subjects: Agricultural Finance

description: These pages constitute the proceedings of the Policy Forum organised by the A.C.T. Branch of the Australian Agricultural Economics Society, held in Canberra on 30 September, 1987. (Contributions have not been revised following the stock market collapse of October, 1987; see the Forum article on this collapse by John Freebairn in this issue of the Review).
Fish-tail Effect and Irreversibility Field of (Cu,C)Ba$_{2}$Ca$_{3}$Cu$_{4}$O$_{x}$-(LiF)$_{y}$ superconductor
Creators: name: Badica, P.
name: Sandu, V.
name: Aldica, G.
name: Iyo, A.
name: Kito, H.
name: Hirai, M.
name: Tanaka, Y.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Addition of (LiF)$_{y<0.15}$, and of proper amount of (AgO)$_{z=0.45-0.8}$ as oxidizing agent, to (Cu,C)Ba$_{2}$Ca$_{3}$Cu$_{4}$O$_{10+d}$ superconductor is useful to control and shift the doping characteristics (hole density and distribution, and level of disorder) into the region where the irreversible properties, i.e. fish-tail effect (FTE) and irreversibility field H$_{irr}$, are improved. Among notable effects are the development of the second magnetization peak with a higher amplitude J$_{c}$, max and the enhancement of H$_{irr}$ at high temperatures, above a certain value T* which depends on both y$_{LiF}$ and z$_{AgO}$. The best results are obtained for the sample with y$_{LiF}$=0.1 and z$_{AgO}$=0.73. This sample preserves its single phase Cu,C-1234 composition. The influence on the FTE and H$_{irr}$ of the interplay between doping characteristics, controlled by LiF and AgO content, is discussed.
description: 28 pages, accepted to J. Supercond
Implications of Grain Size Distribution and Composition for the Correlation Between Dust Extinction and Emissivity
Creators: name: Zelko, Ioana A.
name: Finkbeiner, Douglas P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the effect of variations in dust size distribution and composition on the correlation between the spectral shape of extinction (parameterized by $R_{\textrm{V}}$) and far-infrared dust emissivity (parameterized by the power-law index $β$). Starting from the size distribution models proposed by Weingartner & Draine (2001), using the dust absorption and emission properties derived by Laor & Draine (1993) for carbonaceous and silicate grains, and by Li & Draine (2001) for PAH grains, we calculate the extinction and compare it with the reddening vector derived by Schlafly et al. (2016). An optimizer and an MCMC are used to explore the space of available parameters for the size distributions. We find that larger grains are correlated with high $R_{\textrm{V}}$. However, this trend is not enough to explain the emission-extinction correlation observed by Schlafly et al. (2016). For the $R_{\textrm{V}}-β$ correlation to arise, we need to impose explicit priors for the carbonaceous and silicate volume priors as functions of $R_{\textrm{V}}$. The results show that a composition with higher ratio of carbonaceous to silicate grains leads to higher $R_{\textrm{V}}$ and lower $β$. A relation between $E(\textrm{B}-\textrm{V})/τ_{353}$ and $R_{\textrm{V}}$ is apparent, with possible consequences for the recalibration of emission-based dust maps as a function of $R_{\textrm{V}}$.
description: Published in The Astrophysical Journal. 28 pages, 27 figures, 3 Tables; updated to correct some typos identified in the proof reading stage of the journal
Frustration-induced emergent Hilbert space fragmentation
Creators: name: Lee, Kyungmin
name: Pal, Arijeet
name: Changlani, Hitesh J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Although most quantum systems thermalize locally on short time scales independent of initial conditions, recent developments have shown this is not always the case. Lattice geometry and quantum mechanics can conspire to produce constrained quantum dynamics and associated glassy behavior, a phenomenon that falls outside the rubric of the eigenstate thermalization hypothesis. Constraints "fragment" the many-body Hilbert space due to which some states remain insulated from others and the system fails to attain thermal equilibrium. Such fragmentation is a hallmark of geometrically frustrated magnets with low-energy "icelike manifolds" exhibiting a broad range of relaxation times for different initial states. Focusing on the highly frustrated kagome lattice, we demonstrate these phenomena in the Balents-Fisher-Girvin Hamiltonian (easy-axis regime), and a three-coloring model (easy-plane regime), both with constrained Hilbert spaces. We study their level statistics and relaxation dynamics to develop a coherent picture of fragmentation in various limits of the XXZ model on the kagome lattice.
Antwort an Rolf Scheffbuch
Creators: name: Benz, Gerhard
name: Fischer, Hildegund
name: Schmid, Anne-Lore
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 24 Nr. 4 (1975): Ökumenische Rundschau, Band 24, Heft 4
trackerFCT – um sistema para monitorizar e gerir a conformidade com as políticas de Ciência Aberta da FCT
Creators: name: Pardelha, Filipa
name: Graça, Paulo
name: Laranjeira, Cátia
name: Pereira, Filipa
name: Novais, Joana
name: Lopes, Paula
name: Antunes, António
name: Cardoso, Elsa
name: Mendes Moreira, João
Publisher: name: Zenodo
Year: 2024

description: Apresentação realizada na sessão “O meu Póster em 1 minuto”, da 15ª Conferência Lusófona de Ciência Aberta, na Escola Superior de Enfermagem do Porto (ESEP), de 01 a 04 de outubro de 2024.
Consistent discretization and canonical classical and quantum Regge calculus
Creators: name: Gambini, Rodolfo
name: Pullin, Jorge
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We apply the ``consistent discretization'' technique to the Regge action for (Euclidean and Lorentzian) general relativity in arbitrary number of dimensions. The result is a well defined canonical theory that is free of constraints and where the dynamics is implemented as a canonical transformation. This provides a framework for the discussion of topology change in canonical quantum gravity. In the Lorentzian case, the framework appears to be naturally free of the ``spikes'' that plague traditional formulations. It also provides a well defined recipe for determining the measure of the path integral.
description: 8 pages, Dedicated to Rafael Sorkin on his 60th birthday, to appear in Proceedings of the Puri Conference, special issue of IJMPD
Data-Driven Stabilization of Periodic Orbits
Creators: name: Bramburger, Jason J.
name: Kutz, J. Nathan
name: Brunton, Steven L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: Optimization and Control (math.OC)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Periodic orbits are among the simplest non-equilibrium solutions to dynamical systems, and they play a significant role in our modern understanding of the rich structures observed in many systems. For example, it is known that embedded within any chaotic attractor are infinitely many unstable periodic orbits (UPOs) and so a chaotic trajectory can be thought of as `jumping' from one UPO to another in a seemingly unpredictable manner. A number of studies have sought to exploit the existence of these UPOs to control a chaotic system. These methods rely on introducing small, precise parameter manipulations each time the trajectory crosses a transverse section to the flow. Typically these methods suffer from the fact that they require a precise description of the Poincaré mapping for the flow, which is a difficult task since there is no systematic way of producing such a mapping associated to a given system. Here we employ recent model discovery methods for producing accurate and parsimonious parameter-dependent Poincaré mappings to stabilize UPOs in nonlinear dynamical systems. Specifically, we use the sparse identification of nonlinear dynamics (SINDy) method to frame model discovery as a sparse regression problem, which can be implemented in a computationally efficient manner. This approach provides an explicit Poincaré mapping that faithfully describes the dynamics of the flow in the Poincaré section and can be used to identify UPOs. For each UPO, we then determine the parameter manipulations that stabilize this orbit. The utility of these methods are demonstrated on a variety of differential equations, including the Rössler system in a chaotic parameter regime.
description: Minor edits after review process. Current version is accepted to IEEE Access
The effect of crop rotation on soil health in the north-western Free State region, South Africa
Creators: name: de Bruyn, Melanie
name: Nel, Andre
name: van Niekerk, Johan
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Plant Biology

description: Soil health is an important aspect of sustainable agriculture. By maintaining soil health, crop yields can be consistently successful without negatively affecting the environment. The objective of this study was to evaluate the effects that different cropping systems have on soil health in the north-western Free State region. The cropping systems focused on maize production, with soybean and cover crop included as rotational crops and monitored for three consecutive seasons. Soil samples were taken seasonally and their physical, chemical and biological properties, as well as the subsequent soil health score, were measured using the Haney Soil Health Test (HSHT). Results from the HSHT were statistically analysed and showed that there was no statistically significant interaction effect between cropping systems and season on soil properties, nor on the subsequent soil health score. These findings suggest that soybean and cover crop rotations with maize have the potential to naturally maintain soil health in a condition similar to those subjected to an artificially fertilised monoculture of maize. In addition, season variation influenced soil health irrespective of cropping system. Therefore, including soybean and cover crops in cropping systems with maize can be a means of promoting sustainable agriculture in the north-western Free State region, when seasonal variation and inherent soil properties are considered.
The pi -> pi pi process in nuclei and the restoration of chiral symmetry
Creators: name: Grion, N.
name: Bregant, M.
name: Camerini, P.
name: Fragiacomo, E.
name: Piano, S.
name: Rui, R.
name: Gibson, E. F.
name: Hofman, G.
name: Mathie, E. L.
name: Meier, R.
name: Sevior, M. E.
name: Smith, G. R.
name: Tacik, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The results of an extensive campaign of measurements of the pi -> pi pi process in the nucleon and nuclei at intermediate energies are presented. The measurements were motivated by the study of strong pi pi correlations in nuclei. The analysis relies on the composite ratio C_{pi pi}^A, which accounts for the clear effect of the nuclear medium on the (pi pi) system. The comparison of the C_{pi pi}^A distributions for the (pi pi)_{I=J=0} and (pi pi)_{I=0,J=2} systems to the model predictions indicates that the C_{pi pi}^A behavior in proximity of the 2m_pi threshold is explainable through the partial restoration of chiral symmetry in nuclei.
description: accepted for publication in Nucl. Phys. A
Important outcomes of success : a team building program
Creators: name: Pachal, Janet Mary
Publisher: name: University of British Columbia
Year: 2009

description: There is little information about how the criteria or outcomes used to judge a program varies between stakeholders. When organizational development initiatives such as team building programs are designed, the expected results or outcomes are often pre-determined by those responsible for the programs. Consequently, the views of individuals directly affected by the initiative are often not considered. Therefore, the intent of this study is to determine which outcomes males and females at various positions within an organization identify as most important in judging the success of a team building program. A questionnaire was distributed to a sample of individuals employed at a large public sector organization. From the results it was determined that the outcomes both employees and managers consider important include increasing trust and support in supervisors, improving communication and working relationships between co-workers and increasing leadership/management effectiveness. In terms of differences in important outcomes, the male managers place importance on outcomes related to increasing productivity, female managers value improving culture, male employees are interested in increasing job satisfaction and female employees are interested in improved respect from co-workers. By being aware of all of the outcomes various individuals consider important in judging the success of a program, senior officials and program managers can adapt initiatives that better meet the needs of the individuals within the organization.
The role of conformational diffusion in ion channel gating
Creators: name: Goychuk, Igor
name: Hanggi, Peter
Publisher: name: arXiv
Year: 2006
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We consider an exactly tractable model of the Kramers type for the voltage-dependent gating dynamics of single ion channels. It is assumed that the gating dynamics is caused by the thermally activated transitions in a bistable potential. Moreover, the closed state of the channel is highly degenerate and embraces the whole manifold of closed substates. Opening of the ion channel is energetically prohibited from most of the closed substates and requires a special conformation where the voltage sensor can move along an activation pathway and trigger the transition into the open conformation. When the corresponding activation barrier towards the channel's opening is removed by the applied voltage, the statistics of non-conducting time intervals become strongly influenced by the conformational diffusion. For the corresponding supra-threshold voltages, our model explains the origin of the power law distribution of the closed time intervals. The exponential-linear dependence of the opening rate on voltage, often used as an experimental fit, is also reproduced by our model.
Resolving nonuniform temperature distributions with single-beam absorption spectroscopy. Part II: Implementation from broadband spectra
Creators: name: Malarich, Nathan
name: Rieker, Greg
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Several past studies have described how absorption spectroscopy can be used to determine spatial temperature variations along the optical path by measuring the unique, nonlinear response to temperature of many molecular absorption transitions and performing an inversion. New laser absorption spectroscopy techniques are well-suited to this nonuniformity measurement, yet present analysis approaches use only isolated features rather than a full broadband spectral measurement. In this work, we develop a constrained spectral fitting technique called E"-binning to fit an absorption spectrum arising from a nonuniform environment. The information extracted from E"-binning is then input to the inversion approach from the previous paper in this series (Malarich and Rieker, JQSRT 107455) to determine the temperature distribution. We demonstrate this approach by using dual frequency comb laser measurements to resolve convection cells in a tube furnace. The recovered temperature distributions at each measurement height agree with an existing natural convection model. Finally, we show that for real-world measurements with noise and absorption model error, increasing the bandwidth and the number of measured absorption transitions may improve the temperature distribution precision. We make the fitting code publicly available for use with any broadband absorption measurement.
description: This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Gamma-ray burst spectra from continuously accelerated electrons
Creators: name: Poutanen, Juri
name: Stern, Boris E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss here constraints on the particle acceleration models from the observed gamma-ray bursts spectra. The standard synchrotron shock model assumes that some fraction of available energy is given instantaneously to the electrons which are injected at high Lorentz factor. The emitted spectrum in that case corresponds to the spectrum of cooling electrons, F_ν~ ν^{-1/2}, is much too soft to account for the majority of the observed spectral slopes. We show that continuous heating of electrons over the life-time of a source is needed to produce hard observed spectra. In this model, a prominent peak develops in the electron distribution at energy which is a strong function of Thomson optical depth τ_T of heated electrons (pairs). At τ_T>1, a typical electron Lorentz factor γ~ 1-2 and quasi-thermal Comptonization operates. It produces spectrum peaking at a too high energy. Optical depths below 10^{-4} would be difficult to imagine in any physical scenario. At τ_T =10^{-4}-10^{-2}, γ~ 30-100 and synchrotron self-Compton radiation is the main emission mechanism. The synchrotron peak should be observed at 10--100 eV, while the self-absorbed low-energy tail with F_ν~ ν^2 can produce the prompt optical emission (like in the case of GRB 990123). The first Compton scattering radiation by nearly monoenergetic electrons peaks in the BATSE energy band and can be as hard as F_ν~ ν^1 reproducing the hardness of most of the observed GRB spectra. The second Compton peak should be observed in the high-energy gamma-ray band, possibly being responsible for the 10-100 MeV emission detected in GRB 941017. A significant electron-positron pair production reduces the available energy per particle, moving spectral peaks to lower energies as the burst progresses.
description: 4 pages, 1 figure, Il nuovo cimento C, in press. Proceedings of the 4th Workshop Gamma-Ray Bursts in the Afterglow Era, Rome, 18-22 October 2004
title: A model system to investigate microbiome effects on age-related health in C. elegans
Creators: name: Kudzminskaite, Brigita
Publisher: name: University of Kent
Year: 2024

description: With the advancement of modern medicine, our aging population is rising sharply. In recent years there has been more focus in increasing healthspan, as well as lifespan, to improve the quality of life of older adults. The microbiome has been shown to play a huge role in human biological functions in both health and disease. This study focuses on two major healthcare concerns (a) Alzheimer’s disease and (b) Sarcopenia, using the model organism Caenorhabditis elegans. The research aims to investigate a microbiome approach towards treatment or prevention of these diseases. When using a C. elegans AD model, an experimental microbiome (EM) diet was shown to be protective against Aβ toxicity. From this EM, one bacterial species – Stenotrophomonas sp.Myb57 – became a focus due to its significant protective effects. It was found that this protection was genus-specific, with some species releasing a compound in its cell-free media which elicits this effect. Further study will hopefully allow us to isolate the gene or compound that is causing the protection, as a potential for an Alzheimer’s disease treatment. C. elegans was additionally used as a model for aging muscles. When testing the effects of an experimental microbiome on muscles, results showed that it made no difference to the body wall muscle cell morphology in early adulthood or the muscle contractability throughout aging. When muscle function was assessed, however, it seems that worms fed the EM had lower muscle strength in early adulthood, but were much more able to maintain this strength as they aged compared to the control. Overall, there is very promising evidence that the microbiome may be great source of research for therapeutic techniques against Alzheimer’s disease, Sarcopenia and many more.
Quantum state tomography with informationally complete POVMs generated in the time domain
Creators: name: Czerwinski, Artur
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The article establishes a framework for dynamic generation of informationally complete POVMs in quantum state tomography. Assuming that the evolution of a quantum system is given by a dynamical map in the Kraus representation, one can switch to the Heisenberg picture and define the measurements in the time domain. Consequently, starting with an incomplete set of positive operators, one can obtain sufficient information for quantum state reconstruction by multiple measurements. The framework has been demonstrated on qubits and qutrits. For some types of dynamical maps, it suffices to initially have one measurement operator. The results demonstrate that quantum state tomography is feasible even with limited measurement potential.
Bayesian Econometrics and How to Get Rid of Those Wrong Signs
Creators: name: Griffiths, William E.
name: Griffiths, William E.
Publisher: name: Unknown
Year: 1988
Subjects: Research Methods/ Statistical Methods

description: In many instances, Bayesian Econometrics offers a more natural interpretation of the results of a statistical investigation than does the sampling theory approach. Furthermore, the Bayesian approach provides a formal framework for incorporating prior information which is frequently available from economic theory. Despite these advantages of the Bayesian approach, applied econometric work has generally been dominated by the sampling theory approach. A simple regression example with one coefficient is used to describe the Bayesian approach using three different priors: a natural conjugate informative prior, a non informative prior, and a prior with inequality restrictions on the sign and possibly magnitude of the coefficient. The differences between the sampling theory and Bayesian approaches are highlighted. Some practical problems with the first two priors are suggested as possible reasons for the non adoption of the Bayesian approach; it is argued that the inequality restricted prior provides a practical and meaningful alternative which is likely to increase the appeal of the Bayesian approach. The implications are outlined of extending the simple one coefficient model to one where the error variance is unknown and then one where there is an unspecified number of coefficients. An example is provided of how to compute Bayesian inequality restricted estimates using the econometric computer program SHAZAM.
Mechanistische Studien an katalytischen Reaktionen in der Elektrosynthese
Creators: name: Rösel, Arend Falko
Publisher: name: Universität Rostock
Year: 2020
Subjects: subject: 540 Chemistry & allied sciences

description: In dieser Arbeit wurden Kombinationen elektrochemischer und katalytischer Reaktionen aus einer mechanistischen Sichtweise an vier Beispielen untersucht. Die ersten beiden Beispiele behandeln die elektrokatalytische Reduktion von Kohlenstoffdioxid durch einen mangan- und einen eisenbasierten Komplex. Im dritten Beispiel wird die elektrochemische Variante der Newman-Kwart-Umlagerung als elektrochemisch katalysierte Reaktion untersucht. Im vierten Beispiel werden die nötigen Schritte zur Überführung eines Aryliodids als Mediator von einem Ex-cell in einen katalytischen In-cell-Prozess beleuchtet.
Optimizing photon indistinguishability in the emission from incoherently-excited semiconductor quantum dots
Creators: name: Troiani, F.
name: Perea, J. I.
name: Tejedor, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Most optical quantum devices require deterministic single-photon emitters. Schemes so far demonstrated in the solid state imply an energy relaxation which tends to spoil the coherent nature of the time evolution, and with it the photon indistinguishability. We focus our theoretical investigation on semiconductor quantum dots embedded in microcavities. Simple and general relations are identified between the photon indistinguishability and the collection efficiency. The identification of the key parameters and of their interplay provides clear indications for the device optimization.
Quantum Broadcast Channels with Cooperating Decoders: An Information-Theoretic Perspective on Quantum Repeaters
Creators: name: Pereg, Uzi
name: Deppe, Christian
name: Boche, Holger
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Theory (cs.IT)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Communication over a quantum broadcast channel with cooperation between the receivers is considered. The first form of cooperation addressed is classical conferencing, where Receiver 1 can send classical messages to Receiver 2. Another cooperation setting involves quantum conferencing, where Receiver 1 can teleport a quantum state to Receiver 2. When Receiver 1 is not required to recover information and its sole purpose is to help the transmission to Receiver 2, the model reduces to the quantum primitive relay channel. The quantum conferencing setting is intimately related to quantum repeaters, as the sender, Receiver 1, and Receiver 2 can be viewed as the transmitter, the repeater, and the destination receiver, respectively. We develop lower and upper bounds on the capacity region in each setting. In particular, the cutset upper bound and the decode-forward lower bound are derived for the primitive relay channel. Furthermore, we present an entanglement-formation lower bound, where a virtual channel is simulated through the conference link. At last, we show that as opposed to the multiple access channel with entangled encoders, entanglement between decoders does not increase the classical communication rates for the broadcast dual.
Interstate Trade in Market Milk
Creators: name: Small, Annette M.
name: Small, Annette M.
Publisher: name: Unknown
Year: 1988
Subjects: subject: Marketing
subject: FOS: Economics and business

description: Interstate trade has been a feature of the policy debate for several agricultural products in Australia, including wheat, eggs and dairy products. Interstate trade in market milk has been an on-going policy issue since the early 1970s, but has largely been prevented by informal agreements and threats of retaliation. Formal arrangements preventing free interstate trade are unlawful, being contrary to Section 92 of the Australian Constitution. Due to recent changes in the marketing arrangements for manufacturing milk, interstate trade in market milk now has the potential to rapidly deregulate the whole Australian dairy industry, with the consequent problems of resource dislocation and adjustment The potential impacts of interstate trade in market milk are discussed below, commencing with a description of the background and situation as 31 December 1987.
Supplemental figures & tables from Allometric analysis of brain cell number in hymenoptera suggests ant brains diverge from general trends
Creators: name: Godfrey, Rebekah Keating
name: Swartzlander, Mira
name: Wulfila Gronenberg
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Neuroscience
subject: Evolutionary Biology
subject: FOS: Biological sciences

description: Includes figures and tables referenced in main text and provides greater detail regarding methods, data summaries, and analyses.
The Share Market Crash and Australian Agriculture
Creators: name: Freebairn, John W.
name: Freebairn, John W.
Publisher: name: Unknown
Year: 1988
Subjects: Agricultural Finance

description: The 20 to 45 per cent fall in indexes of share market prices in mid-October 1987 was a worldwide phenomenon. It represented a sharp reversal to a five-year period of sustained increases in stock prices. It is important to assess the implications of the crash for Australian agriculture in the context of the world scene, because of the worldwide stock market crash, because of the interdependence of world financial markets and because of Australian agriculture's dependence on world markets for 60 per cent of its sales. This note looks at the likely implications of the stock market crash on Australian agriculture in terms of direct effects on land prices; direct effects on world economic activity; effects of lower economic activity on commodity markets; and some associated implications for the stance of government policies.
Ormoceras undefined-A
Creators: name: Kröger, Björn
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Cephalopoda
Actinoceratida
Ormoceratidae
Ormoceras
Ormoceras undefined-A

description: Ormoceras sp. A
Fig. 8H
Material examined
ESTONIA • 1 spec.; Salu; Pirgu Regional Stage; TUG 1745-239.
Description
Specimen TUG 1745-239 is a ca 113 mm long fragment of a phragmocone with a conch height of 23– 45 mm (angle of expansion = 11°) which is slightly deformed. The conch surface is apparently smooth. The RCL varies between 0.23–0.24 and at a conch height of 27 mm the RSP is ca 0.3. The septal necks are short adnate, and the connecting ring forms barrel-shaped siphuncular segments with a height of 5.8 mm where the length is 6.5 mm (SCR = 0.89). Incipient, symmetric endosiphuncular annuli occur where the conch height is 25 mm.
Remarks
The specimen differs from O. heckeri in having a less expanded siphuncle (SCR = 0.89 in specimen TUG 1745-239 compared with SCR> 1 in O. heckeri) at comparable conch diameters. However, this single, fragmentarily preserved specimen does not allow for species level determination and detailed comparison with other, e.g., North American species of the genus.
description: Published as part of Kröger, Björn, 2025, The Lyckholm acme of cephalopods - Review of the late Katian (Vormsi-Pirgu regional stages) Ordovician cephalopods of Estonia, pp. 1-169 in European Journal of Taxonomy 978 on page 21, DOI: 10.5852/ejt.2025.978.2801, http://zenodo.org/record/14988376