cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Elliptical Galaxies with Emission Lines from the Sloan Digital Sky Survey
Creators: name: Zhao, Ying-He
name: Gu, Qiu-Sheng
name: Peng, Zhi-Xin
name: Shi, Lei
name: Luo, Xin-Lian
name: Peng, Qiu-He
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of 11 elliptical galaxies with strong nebular emission lines during our study of star formation history along the Hubble sequence. After removing the dilution from the underlying old stellar populations by use of stellar population synthesis model, we derive the accurate fluxes of all emission lines for these objects, which are later classified with emission line ratios into one Seyfert 2, six LINERs and four HII galaxies. We also identify one HII galaxy (A1216+04) as a hitherto unknown Wolf-Rayet galaxy from the presence of the Wolf-Rayet broad bump at 4650 Å. We propose that the star-forming activities in elliptical galaxies are triggered by either galaxy-galaxy interaction or the merging of a small satellite/a massive star cluster, as already suggested by recent numerical simulations.
Intra-Industry Trade in Horizontally and Vertically Differentiated Agri-Food Products between Hungary and the EU
Creators: name: Ferto, Imre
name: Hubbard, Lionel J.
name: Ferto, Imre
name: Hubbard, Lionel J.
Publisher: name: Unknown
Year: 2002
Subjects: subject: International Relations/Trade
subject: intra-industry trade
subject: product differentiation
subject: Hungary

description: Intra-industry trade in agri-food products between Hungary and the EU is shown to be low and dominated by vertically rather than horizontally differentiated products, suggesting higher economic adjustment costs. Following recent empirical studies, we then test econometrically for the determinants of this trade using different measures of horizontal and vertical trade, and employing an array of popular explanatory variables. Results suggest that separating the measure of intra-industry trade into vertical and horizontal provides for better estimation and supports the contention that the determinants may differ by type of trade. In the regression analysis, the level of intra-industry trade is found to serve as a better dependent variable than the degree or share of intra-industry trade.
Estimates of random walk exit probabilities and application to loop-erased random walk
Creators: name: Kozdron, Michael J.
name: Lawler, Gregory F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60F99 (Primary), 60G50, 60J45, 60J65 (Secondary)

description: We prove an estimate for the probability that a simple random walk in a simply connected subset A of Z^2 starting on the boundary exits A at another specified boundary point. The estimates are uniform over all domains of a given inradius. We apply these estimates to prove a conjecture of S. Fomin in 2001 concerning a relationship between crossing probabilities of loop-erased random walk and Brownian motion.
description: 26 pages, 0 figures
Optimization of laser stabilization via self-injection locking to WGM microresonator
Creators: name: Galiev, Ramzil R.
name: Kondratiev, Nikita M.
name: Lobanov, Valery E.
name: Matsko, Andrey B.
name: Bilenko, Igor A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Self-injection locking is a dynamic phenomenon representing stabilization of the emission frequency of an oscillator with a passive cavity enabling frequency filtered coherent feedback to the oscillator cavity. For instance, self-injection locking of a semiconductor laser to a high-quality-factor (high-Q) whispering gallery mode (WGM) microresonator can result in multiple orders of magnitude reduction of the laser linewidth. The phenomenon was broadly studied in experiments, but its detailed theoretical model allowing improving the stabilization performance does not exist. In this paper we develop such a theory. We introduce five parameters identifying efficiency of the self-injection locking in an experiment, comprising back-scattering efficiency, phase delay between the laser and the high-Q cavities, frequency detuning between the laser and the high-Q cavities, the pump coupling efficiency, the optical path length between the laser and the microresonator. Our calculations show that the laser linewidth can be improved by two orders of magnitude compared with the case of not optimal self-injection locking. We present recommendations on the experimental realization of the optimal self-injection locking regime. The theoretical model provides deeper understanding of the self-injection locking and benefits multiple practical applications of self-injection locked oscillators.
Direct dark matter search by observing electrons produced in neutralino-nucleus collisions
Creators: name: Moustakidis, Ch. C.
name: Vergados, J. D.
name: Ejiri, H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Exotic dark matter and dark energy together seem to dominate in the Universe. Supersymmetry naturally provides a candidate for the dark matter constituents via the lightest supersymmetric particle (LSP). The most important process for directly detecting dark matter is the LSP-nucleus elastic scattering by measuring the energy of the recoiling nucleus. In the present work we explore a novel process, which has definite experimental advantages, that is the detection of the dark matter constituents by observing the low energy ionization electrons. These electrons, which are produced during the LSP-nucleus collision, may be observed separately or in coincidence with the recoiling nuclei. We develop the formalism and apply it in calculating the ratio of the ionization rate to the nuclear recoil rate in a variety of atoms including Ne-20, Ar-40, Ge-76, Kr-78 and Xe-132 employing realistic Hartree-Fock electron wave functions. The obtained ratios are essentially independent of all parameters of supersymmetry except the neutralino mass, but they crucially depend on the electron energy cut off. These ratios per electron tend to increase with the atomic number and can be as high as 10 per cent. Based on our results it is both interesting and realistic to detect the LSP by measuring the ionization electrons following the-LSP nuclear collisions.
description: 20 LaTex pages, 6 figures
Vicedom, Georg F., Die Mission stellt sich der Kritik unserer Zeit ...
Creators: name: Wieske, Günter
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 10 Nr. 2 (1961): Ökumenische Rundschau, Band 10, Heft 2
Additional file 6 of Knowledge, attitude and practice towards cervical cancer prevention among mothers of girls aged between 9 and 14 years: a cross sectional survey in Zimbabwe
Creators: name: Zibako, Petmore
name: Tsikai, Nomsa
name: Manyame, Sarah
name: Ginindza, Themba G.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 6: Attitude and Practice frequency distribution.
Additional file 7 of Knowledge, attitude and practice towards cervical cancer prevention among mothers of girls aged between 9 and 14 years: a cross sectional survey in Zimbabwe
Creators: name: Zibako, Petmore
name: Tsikai, Nomsa
name: Manyame, Sarah
name: Ginindza, Themba G.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 7: Vaccination related questions.
Public Policies and the Demand for Vegetables
Creators: name: Gustavsen, Geir Waehler
name: Rickertsen, Kyrre
name: Gustavsen, Geir Waehler
name: Rickertsen, Kyrre
Publisher: name: Unknown
Year: 2002
Subjects: subject: Demand and Price Analysis
subject: vegetables
subject: demand
subject: segmentation
subject: household types
subject: policies

description: Increased consumption of vegetables may reduce obesity and the prevalence of cardiac diseases and cancer. Norwegians consume less vegetables than nutrition experts recommend and the per capita consumption is lower than in most European countries. To investigate the causes of low consumption, a two-step approach is used to estimate the demand segmented by nine different household types. In the first step, a probit model is estimated to investigate the decision whether to purchase traditional vegetables, salad vegetables, and industrially processed vegetables. Conditional on purchase, an almost ideal demand model is used to model how much to purchase. The own-price elasticities and total expenditure elasticities are high for traditional and industrially processed vegetables for most household types. Especially households with children have elastic demand. Lower value added tax or lower import tariffs for traditional and industrially processed vegetables will increase the demand for these vegetables, while reducing the price of salad vegetables seem to have a limited effect. For households with children, increased incomes have large effects on the demand for traditional and industrially processed vegetables indicating that, for example, increased child support will result in increased vegetable consumption.
Computation-distortion optimized DCT-based video coding
Creators: name: Ismaeil, Ismaeil-Ragab
Publisher: name: University of British Columbia
Year: 2009

description: The rapidly expanding field of multimedia communications has fueled significant research and development work in the area of real-time video encoding. Dedicated hardware solutions have reached maturity and cost-efficient hardware encoders are being developed by several manufacturers. However, software solutions based on general purpose processors or programmable digital signal processors (DSPs) have significant merits. Towards this objective, we have developed a flexible framework for video encoding that yields very good computation-performance tradeoffs. The proposed framework consists of a set of optimized core components: motion estimation, the Discrete Cosine Transform (DCT), quantization, and mode selection. Each of the components can be configured to achieve a desired computation-performance tradeoff. The components can be assembled to obtain encoders with varying degrees of computational complexity. Computation control has been implemented within the proposed framework to allow the resulting algorithms to adapt to the available computational resources. The proposed framework was applied to MPEG-2 and H.263 encoding using Intel's Pentium/MMX desktop processor. Excellent speed-performance tradeoffs were obtained.
Vertical Price Leadership on Local Maize Markets in Benin
Creators: name: Kuiper, W. Erno
name: Lutz, Clemens
name: Van Tilburg, Aad
name: Kuiper, W. Erno
name: Lutz, Clemens
name: Van Tilburg, Aad
Publisher: name: Unknown
Year: 2002
Subjects: subject: Demand and Price Analysis
subject: Vertical price leadership
subject: Marketing channels
subject: Cointegration
subject: Common Factor
subject: Benin

description: This paper considers vertical price relationships between wholesalers and retailers on five local maize markets in Benin. We show that if the common factor and the long-run disequilibrium error are not explicitly taken into account in testing the channel model, one can easily be wrong about how restrictions on the error-correction structure must be interpreted in terms of economic power in the channel. The empirical results show interesting differences between markets and reveal that retailers play a more prominent role in the price formation process than generally assumed in the literature. Retailers in the two major towns do not allow wholesalers to behave as vertical price leaders, but in the two larger rural centers, wholesalers involved in arbitrage among urban markets are able to influence price formation.
The Morphology - Density Relation in z ~ 1 Clusters
Creators: name: Postman, M.
name: Franx, M.
name: Cross, N.
name: Holden, B.
name: Ford, H.
name: Illingworth, G.
name: Goto, T.
name: Demarco, R.
name: Rosati, P.
name: Blakeslee, J.
name: Tran, K. -V.
name: Benitez, N.
name: IDT, the ACS
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We measure the morphology--density relation (MDR) and morphology-radius relation (MRR) for galaxies in seven z ~ 1 clusters that have been observed with the Advanced Camera for Surveys on board the Hubble Space Telescope. Simulations and independent comparisons of ourvisually derived morphologies indicate that ACS allows one to distinguish between E, S0, and spiral morphologies down to zmag = 24, corresponding to L/L* = 0.21 and 0.30 at z = 0.83 and z = 1.24, respectively. We adopt density and radius estimation methods that match those used at lower redshift in order to study the evolution of the MDR and MRR. We detect a change in the MDR between 0.8 < z < 1.2 and that observed at z ~ 0, consistent with recent work -- specifically, the growth in the bulge-dominated galaxy fraction, f_E+SO, with increasing density proceeds less rapidly at z ~ 1 than it does at z ~ 0. At z ~ 1 and density <= 500 galaxies/Mpc^2, we find = 0.72 +/- 0.10. At z ~ 0, an E+S0 population fraction of this magnitude occurs at densities about 5 times smaller. The evolution in the MDR is confined to densities >= 40 galaxies/Mpc^2 and appears to be primarily due to a deficit of S0 galaxies and an excess of Spiral+Irr galaxies relative to the local galaxy population. The Elliptical fraction - density relation exhibits no significant evolution between z = 1 and z = 0. We find mild evidence to suggest that the MDR is dependent on the bolometric X-ray luminosity of the intracluster medium. Implications for the evolution of the disk galaxy population in dense regions are discussed in the context of these observations.
description: 30 pages, 18 figures. Accepted for publication in ApJ. Full resolution versions of figs 2,3,6,8 are available at http://www.stsci.edu/~postman/mdr_figures
Statistical modeling of primary Ewing tumours of the bone
Creators: name: Malakar, Sreepurna
name: Smarandache, Florentin
name: Bhattacharya, Sukanto
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Biological sciences

description: This short technical paper advocates a bootstrapping algorithm from which we can form a statistically reliable opinion based on limited clinically observed data, regarding whether an osteo-hyperplasia could actually be a case of Ewing's osteosarcoma. The basic premise underlying our methodology is that a primary bone tumour, if it is indeed Erwing's osteosarcoma, cannot increase in volume beyond some critical limit without showing metastasis. We propose a statistical method to extrapolate such critical limit to primary tumour volume. Our model does not involve any physiological variables but rather is entirely based on time series observations of increase in primary tumour volume from the point of initial detection to the actual detection of metastases.
description: 12 pages
Multi-scale three-domain approach for coupling free flow and flow in porous media including droplet-related interface processes
Creators: name: Ackermann, Sina
name: Bringedal, Carina
name: Helmig, Rainer
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Drops on a free-flow/porous-medium-flow interface have a strong influence on the exchange of mass, momentum and energy between the two macroscopic flow regimes. Modeling droplet-related pore-scale processes in a macro-scale context is challenging due to the scale gap, but might be rewarding due to relatively low computational costs. We develop a three-domain approach to model drop formation, growth, detachment and film flow in a lower-dimensional interface domain. A simple upscaling technique allows to compute the drop-covered interface area fraction which affects the coupling fluxes. In a first scenario, only drop formation, growth and detachment are taken into account. Then, spreading and merging due to lateral fluxes are considered as well. The simulation results show that the impact of these droplet-related processes can be captured. However, extensions are necessary to represent the influence on the free flow more precisely.
description: 19 pages, 18 figures
Holsten, Walter (Hrsg.), Neue Begegenung von Kirche und Islam
Creators: name: Althausen, Johannes
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 10 Nr. 2 (1961): Ökumenische Rundschau, Band 10, Heft 2
How to Approach a Market? A Theoretical Concept for Defining and Describing Land Markets
Creators: name: Hurrelmann, Annette
name: Hurrelmann, Annette
Publisher: name: Unknown
Year: 2002
Subjects: subject: Land Economics/Use
subject: New Institutional Economics
subject: Land Markets
subject: Sharecropping
subject: Land Reform
subject: Land Titling

description: Land markets have received a considerable amount of attention in economic literature. Since the treatment of the topic covers various approaches, areas, and questions, it seems desirable to attempt an overview of the results. This paper devises a way in which to present a complete picture of the land market by drawing together the various contributions. The first step is to establish a method by which a market in its entirety can be defined. It is suggested that the application of Oliver Williamson's "Four levels of social analysis" is an appropriate approach to be used in this endeavour. In the second step, the contributions to land market research are reviewed, according to Williamson's scheme, within four broad categories: (1) embeddedness, (2) institutional environment, (3) governance and (4) resource allocation. The topics covered include cropshare tenancy, land titling and registration, communal land ownership, farmland policies, credit access and land reform. The paper closes with some proposals for further research and a discussion of the value of the approach used.
Chaos in opinion-driven disease dynamics
Creators: name: Götz, Thomas
name: Krüger, Tyll
name: Niedzielewski, Karol
name: Pestow, Radomir
name: Schäfer, Moritz
name: Schneider, Jan
Publisher: name: arXiv
Year: 2024
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Dynamical Systems (math.DS)
subject: Physics and Society (physics.soc-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: During the COVID-19 pandemic, it became evident that the effectiveness of applying intervention measures is significantly influenced by societal acceptance, which, in turn, is affected by the processes of opinion formation. This article explores one among the many possibilities of a coupled opinion-epidemic system. The findings reveal either intricate periodic patterns or chaotic dynamics, leading to substantial fluctuations in opinion distribution and, consequently, significant variations in the total number of infections over time. Interestingly, the model is exhibiting the protective pattern.
description: 18 pages, 9 figures
The order conjecture fails in S
Creators: name: Bishop, Christopher J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 30D15, 30C62, 37F10

description: We construct an entire function $f$ with only three singular values whose order of growth can change under a quasiconformal equivalence. This is a counterexample to the Order Conjecture in the Speiser class ${\mathcal S}$ of entire functions.
description: 23 pages, 18 figures
Risk and De-Collectivisation: Evidence from the Czech Republic
Creators: name: Bezemer, Dirk J.
name: Bezemer, Dirk J.
Publisher: name: Unknown
Year: 2002
Subjects: subject: Risk and Uncertainty
subject: transition
subject: agriculture
subject: structural change
subject: risk
subject: survey data

description: The replacement of wage-labour farms by family farms in Central and Eastern Europe during the transformation has been more limited than was initially expected. In this paper a formal framework is developed in order to analyse the behaviour of family farms and socialist-style farms in the presence of risk, given the typical post-socialist environment. Management incentives, ownership structure, lump-sum transfers and consumption choices are shown to have the potential to limit the size of family farms relative to socialist-style farms. The hypotheses are tested with survey data collected by the author in the Czech Republic.
Additional file 2 of Primary health care facility readiness to implement primary eye care in Nigeria: equipment, infrastructure, service delivery and health management information systems
Creators: name: Aghaji, Ada
name: Burchett, Helen E. D.
name: Oguego, Ngozi
name: Hameed, Shaffa
name: Gilbert, Clare
Publisher: name: figshare
Year: 2021
Subjects: Medicine
Biotechnology
Cancer
Science Policy

description: Additional file 2. Framework for semi structured interviews.
Additional file 8 of Immune-complex glomerulonephritis with a membranoproliferative pattern in Frasier syndrome: a case report and review of the literature
Creators: name: Matsuoka, Daisuke
name: Noda, Shunsuke
name: Kamiya, Motoko
name: Hidaka, Yoshihiko
name: Shimojo, Hisashi
name: Yamada, Yasushi
name: Miyamoto, Tsutomu
name: Kandai Nozu
name: Kazumoto Iijima
name: Tsukaguchi, Hiroyasu
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Marine Biology
subject: Cancer

description: Additional file 8: Fig. S7. Immunofluorescence images of the third renal biopsy at age 8. Dense and diffuse IgM deposition observed predominantly along the glomerular capillary. Complement proteins (C3, C1q, and C4) co-deposited with IgM in the tufts, suggesting non-specific entrapping of macromolecules due to a gradual loss of glomerular structural integrity.
Higher Criticism Statistic: Detecting and Identifying Non-Gaussianity in the WMAP First Year Data
Creators: name: Cayon, L.
name: Jin, J.
name: Treaster, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Higher Criticism is a recently developed statistic for non-Gaussian detection, proposed in Donoho & Jin 2004. We find that Higher Criticism is useful for two purposes. First, Higher Criticism has competitive detection power, and non-Gaussianity is detected at the level 99% in the first year WMAP data. We find that the Higher Criticism value of WMAP is outside the 99% confidence region at a wavelet scale of 5 degrees (99.46% of Higher Criticism values based on simulated maps are below the values for WMAP). Second, Higher Criticism offers a way to locate a small portion of data that accounts for the non-Gaussianity. Using Higher Criticism, we have successfully identified a ring of pixels centered at (l\approx 209 deg, b\approx -57 deg), which seems to account for the observed detection of non-Gaussianity at the wavelet scale of 5 degrees. Note that the detection is achieved in wavelet space first. Second, it is always possible that a fraction of pixels within the ring might deviate from Gaussianity even if they do not appear to be above the 99% confidence level in wavelet space. The location of the ring coincides with the cold spot detected in Vielva et al. 2004 and Cruz et al. 2005.
description: submitted to MNRAS
Inclusive nucleon emission induced by quasi-elastic neutrino-nucleus interactions
Creators: name: Nieves, J.
name: Valverde, M.
name: Vicente-Vacas, M. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A previous model on inclusive charged-current quasi-elastic nuclear reactions is extended to include neutral- and charged-current nucleon emission reactions. The problem of outgoing nucleon propagation is treated by means of a Monte Carlo simulation.
description: 3 pages, 3 figures, to appear in the proceedings of NuFact'05
Preliminary Results of a Survey of Farm Animal Biodiversity Conservation Actions in Europe Under the Framework of Agenda 2000
Creators: name: Signorello, Giovanni
name: Pappalardo, Gioacchino
name: Signorello, Giovanni
name: Pappalardo, Gioacchino
Publisher: name: Unknown
Year: 2002
Subjects: subject: Livestock Production/Industries
subject: farm animal biodiversity
subject: Agenda 2000
subject: Rural Development Plans.

description: In this paper we report on preliminary results of a research aimed to examine the content of farm animal biodiversity conservation actions currently under implementation in the European Union in the framework of EU Agenda 2000. In particular, we surveyed sixty-three Rural Development Plans (RDPs) set up in twelve countries in application of EEC regulations 1257/99 and 1750/99. Our analysis focused on endangered breeds of six major livestock species included in the RDPs. This analysis, which is based on the comparison with the indicator's status of the DAD-IS FAO database, allowed to identify priorities in conservation efforts in each country, and estimate the level of expected public expenditure needed to ensure the moving of breeds from at-risk (of extinction) status to not-at-risk status over the period 2000-2006.
Farm-Specific Factors Affecting the Choice Between Conventional and Organic Dairy Farming
Creators: name: Gardebroek, Cornelis
name: Gardebroek, Cornelis
Publisher: name: Unknown
Year: 2002
Subjects: subject: Livestock Production/Industries
subject: organic dairy farming
subject: expected utility maximisation
subject: technology choice
subject: farmspecific variables
subject: random effects probit model

description: Organic dairy farming in the Netherlands is a growing sector. This paper investigates the impact of a number of economic and farm-specific variables on the choice between conventional and organic farming. Based on expected utility maximisation, a theoretical framework is developed that explicitly accounts for the impact of non-economics variables like age and education level and unobserved characteristics. The model is estimated with an unbalanced panel of Dutch dairy farms using a random effects probit specification.
Confinement of an alkaline-earth element in a grating magneto-optical trap
Creators: name: Sitaram, A.
name: Elgee, P. K.
name: Campbell, G. K.
name: Klimov, N. N.
name: Eckel, S.
name: Barker, D. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We demonstrate a compact magneto-optical trap (MOT) of alkaline-earth atoms using a nanofabricated diffraction grating chip. A single input laser beam, resonant with the broad $^1$S$_0\,\rightarrow \,^1$P$_1$ transition of strontium, forms the MOT in combination with three diffracted beams from the grating chip and a magnetic field produced by permanent magnets. A differential pumping tube limits the effect of the heated, effusive source on the background pressure in the trapping region. The system has a total volume of around 2.4 L. With our setup, we have trapped up to $5 \times 10^6$ $^{88}$Sr atoms, at a temperature of approximately $6$ mK, and with a trap lifetime of approximately 1 s. Our results will aid the effort to miniaturize optical atomic clocks and other quantum technologies based on alkaline-earth atoms.
description: 6 pages, 6 figures
COBRA: Compression via Abstraction of Provenance for Hypothetical Reasoning
Creators: name: Deutch, Daniel
name: Moskovitch, Yuval
name: Rinetzky, Noam
Publisher: name: arXiv
Year: 2020
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Data analytics often involves hypothetical reasoning: repeatedly modifying the data and observing the induced effect on the computation result of a data-centric application. Recent work has proposed to leverage ideas from data provenance tracking towards supporting efficient hypothetical reasoning: instead of a costly re-execution of the underlying application, one may assign values to a pre-computed provenance expression. A prime challenge in leveraging this approach for large-scale data and complex applications lies in the size of the provenance. To this end, we present a framework that allows to reduce provenance size. Our approach is based on reducing the provenance granularity using abstraction. We propose a demonstration of COBRA, a system that allows examine the effect of the provenance compression on the anticipated analysis results. We will demonstrate the usefulness of COBRA in the context of business data analysis.
Additional file 1 of Prevalence of BRCA1 and BRCA2 pathogenic sequence variants in ovarian cancer patients in the Gulf region: the PREDICT study
Creators: name: Azribi, Fathi
name: Abdou, Ehab
name: Dawoud, Emad
name: Ashour, Mohamed
name: Kamal, Amgad
name: Al Sayed, Mohamed
name: Burney, Ikram
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Additional file 1: Table 1. Family history of Cancer.
Higher-spin conserved currents in supersymmetric sigma models on symmetric spaces
Creators: name: Evans, J. M.
name: Young, C. A. S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Local higher-spin conserved currents are constructed in the supersymmetric sigma models with target manifolds symmetric spaces $G/H$. One class of currents is based on generators of the de Rham cohomology ring of $G/H$; a second class of currents are higher-spin generalizations of the (super)energy-momentum tensor. A comprehensive analysis of the invariant tensors required to construct these currents is given from two complimentary points of view, and sets of primitive currents are identified from which all others can be constructed as differential polynomials. The Poisson bracket algebra of the top component charges of the primitive currents is calculated. It is shown that one can choose the primitive currents so that the bosonic charges all Poisson-commute, while the fermionic charges obey an algebra which is a form of higher-spin generalization of supersymmetry. Brief comments are made on some implications for the quantized theories.
description: 40 pages; LaTeX
Determinants of Quality Management Efficiency in Polish Food Processing Industry
Creators: name: Zalewski, Romuald I.
name: Skawinska, Eulalia
name: Zalewski, Romuald I.
name: Skawinska, Eulalia
Publisher: name: Unknown
Year: 2002
Subjects: Agribusiness

description: A questionnaire method has been used to collect the empirical data on the food processing enterprises. Data were collected for 36 out of 68 enterprises having ISO 9001 / 2 (April 2000). Value chain as a modelling power of competitive advantage, determinants of quality management system efficiency, participation of knowledge and skills in formation of firm competence were discussed.
Efficient and robust layered video coding
Creators: name: Gallant, Michael David
Publisher: name: University of British Columbia
Year: 2009

description: Layered coding and transport has become an attractive method for enabling video communications over the current non-uniform and sub-optimal network infrastructure. In this dissertation, we present video encoding algorithms for efficient and robust layered video encoding and transport in error-free and error-prone networks. In the first part of this dissertation, error-free layered video encoding is considered. We evaluate the effectiveness of key technical features of a layered approach to video encoding. We then determine an upper bound on the rate-distortion performance of a layered approach to video encoding. Finally, a general formulation for efficient error-free layered video encoding is presented, based on the concept of operational rate-distortion optimization. This algorithm is demonstrated to achieve significant improvement in rate-distortion performance. In the second part, we address complexity issues of this algorithm. Our goal is to find good tradeoffs between rate-distortion performance and computational complexity. We first motivate the need to make simplifications to an operational rate-distortion optimization framework. We then propose a model to control the operating mode of the layered video encoder. This model permits the encoder to compute a priori the rate-distortion optimized parameters such that a target bit rate can be achieved. The third part considers layered video encoding and transport in lossy packet-switched networks. A complete coding and transport framework is developed, including a packetization scheme, decoder error concealment method, and prioritization mechanism. We then introduce the general formulation for an efficient and robust layered video encoding algorithm for error-prone environments. This algorithm is also based on the concept of operational rate-distortion optimization and can be viewed as a generalization of the algorithm introduced for error-free environments. The algorithm incorporates a statistical distortion measure that considers the channel conditions, error recovery capability of the channel codec and error concealment capability of the source decoder to optimize the video encoding mode selection. Then, for a given layered bitstream and given channel conditions, optimal channel protection code rates are determined. This framework is shown to produce substantial improvement in reconstructed video quality for a wide range of packet loss rates. Moreover, it is demonstrated to yield graceful degradation of reconstructed video quality with increasing packet loss rate.
Spectroscopic metallicities for planet-host stars: extending the samples
Creators: name: Santos, N. C.
name: Israelian, G.
name: Mayor, M.
name: Bento, J. P.
name: Almeida, P. C.
name: Sousa, S. G.
name: Ecuvillon, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present stellar parameters and metallicities for 29 planet-host stars, as well as for a large volume-limited sample of 53 stars not known to be orbited by any planetary-mass companion. These stars add to the results presented in our previous series of papers, providing two large and uniform samples of 119 planet-hosts and 94 ``single'' stars with accurate stellar parameters and [Fe/H] estimates. The analysis of the results further confirms that stars with planets are metal-rich when compared with average field dwarfs. Important biases that may compromise future studies are also discussed. Finally, we compare the metallicity distributions for single planet-hosts and planet-hosts in multiple stellar systems. The results show that a small difference cannot be excluded, in the sense that the latter sample is slighly overmetallic. However, more data are needed to confirm this correlation.
description: Accepted for publication in A&A; Replaced by new version on 19/04/2005: corrections in Tables 1 and 2
A linear implicit Euler method for the finite element discretization of a controlled stochastic heat equation
Creators: name: Benner, Peter
name: Stillfjord, Tony
name: Trautwein, Christoph
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 65M12 (Primary) 65C30, 49N10 (Secondary)

description: We consider a numerical approximation of a linear quadratic control problem constrained by the stochastic heat equation with non-homogeneous Neumann boundary conditions. This involves a combination of distributed and boundary control, as well as both distributed and boundary noise. We apply the finite element method for the spatial discretization and the linear implicit Euler method for the temporal discretization. Due to the low regularity induced by the boundary noise, convergence orders above 1/2 in space and 1/4 in time cannot be expected. We prove such optimal convergence orders for our full discretization when the distributed noise and the initial condition are sufficiently smooth. Under less smooth conditions, the convergence order is further decreased. Our results only assume that the related (deterministic) differential Riccati equation can be approximated with a certain convergence order, which is easy to achieve in practice. We confirm these theoretical results through a numerical experiment in a two dimensional domain.
An Analysis of the Impact of Alternative EU Dairy Policies on the Size Distribution of Dutch Dairy Farms: an Information Based Approach to the Non-Stationary Markov Chain Model
Creators: name: Jongeneel, Roelof A.
name: Jongeneel, Roelof A.
Publisher: name: Unknown
Year: 2002
Subjects: subject: Agribusiness
subject: Farm size structure
subject: dairy
subject: milk quota
subject: policy
subject: maximum entropy

description: This paper analyses the impact of the dairy quota scheme on the size distribution of the Dutch dairy industry. A non-stationary Markov model approach is use, where the transition probabilities are explained by a set of exogenous (policy) variables. Using an information theoretical approach, a model is estimated for The Netherlands and used to simulate the impacts of alternative EU dairy policies. Several results emerged: a) There is an autonomous over time decline in farm numbers (implying increase in farm size). b) The dairy quota regime positively influences 'small' and 'medium' farm sizes; c) Abolition of the dairy quota will negatively affect the total number of active farms and favours further increase of farm scale. d) Targeting support according to needs increases the number of active dairy farms as compared with the status quo.
WINGS: a WIde-field Nearby Galaxy-cluster Survey. I - Optical imaging
Creators: name: Fasano, G.
name: Marmo, C.
name: Varela, J.
name: D'Onofrio, M.
name: Poggianti, B. M.
name: Moles, M.
name: Pignatelli, E.
name: Bettoni, D.
name: Kjaergaard, P.
name: Rizzi, L.
name: Couch, W.
name: Dressler, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This is the first paper of a series that will present data and scientific results from the WINGS project, a wide-field, multiwavelength imaging and spectroscopic survey of galaxies in 77 nearby clusters. The sample was extracted from the ROSAT catalogs with constraints on the redshift (0.0420). The global goal of the WINGS project is the systematic study of the local cosmic variance of the cluster population and of the properties of cluster galaxies as a function of cluster properties and local environment. This data collection will allow to define a local 'Zero-Point' reference against which to gauge the cosmic evolution when compared to more distant clusters. The core of the project consists of wide-field optical imaging of the selected clusters in the B and V bands. We have also completed a multi-fiber, medium resolution spectroscopic survey for 51 of the clusters in the master sample. In addition, a NIR (JK) survey of ~50 clusters and an H_alpha + UV survey of some 10 clusters are presently ongoing, while a very-wide-field optical survey has also been programmed. In this paper we briefly outline the global objectives and the main characteristics of the WINGS project. Moreover, the observing strategy and the data reduction of the optical imaging survey (WINGS-OPT) are presented. We have achieved a photometric accuracy of ~0.025mag, reaching completeness to V~23.5. Field size and resolution (FWHM) span the absolute intervals (1.6-2.7)Mpc and (0.7-1.7)kpc, respectively, depending on the redshift and on the seeing. This allows the planned studies to get a valuable description of the local properties of clusters and galaxies in clusters.
description: 24 pages, 15 figures, Accepted by Astronomy and Astrophysics
An X-ray emission line spectrum of Nova V382 Velorum 1999
Creators: name: Ness, J. -U.
name: Starrfield, S.
name: Jordan, C.
name: Krautter, J.
name: Schmitt, J. H. M. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on the analysis of an X-ray grating spectrum of the Classical Nova V382 Vel (1999), obtained with the LETG+HRC-S instrument on board CHANDRA, which shows emission lines dominating over any continuum. Lines of Si, Mg, Ne, O, N, and C are identified, but no Fe lines are detected. The total luminosity in the lines is 4x10^27erg/s (corrected for N_H=1.2x10^21cm^-2). The lines have broad profiles with FWHM corresponding to a velocity 2900+-200km/s. Some structure is identified in the profiles, but for different elements we find different profile structures. While lines of O show a broadened Gaussian profile, those of Ne are double-peaked, suggesting a fragmented emitting plasma. Using the emission measure distribution we derive relative element abundances and find abundances of Ne and N that are significantly enhanced relative to that of O, while Fe is not over-abundant. The lack of any source emission longwards of 50A and the OVIII Ly_alpha/Ly_beta line ratio support previous values of the hydrogen column-density. We find weak continuum emission from the white dwarf, consistent with a black-body spectrum with an upper limit to the temperature of T=3x10^5K, assuming a source radius of 6000km. The upper limit for the integrated black-body luminosity is 2x10^36erg/s. The BeppoSAX and Chandra ACIS observations of V382 Vel show that the nova was bright and in the Super Soft phase as late as 1999 December 30. Our LETG observation obtained 6 weeks later, as well as all subsequent X-ray observations, showed a remarkable fading to a nearly pure emission line phase which suggests that nuclear burning on the white dwarf had turned off by February. In the absence of a photoionizing source the emission lines were formed in a collisionally ionized and excited expanding shell.
description: 11 pages, 8 figures, accepted for MNRAS
Timely NextG Communications with Decoy Assistance against Deep Learning-based Jamming
Creators: name: Costa, Maice
name: Sagduyu, Yalin E.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences
subject: H.1.1
subject: 6006

description: We consider the transfer of time-sensitive information in next-generation (NextG) communication systems in the presence of a deep learning based eavesdropper capable of jamming detected transmissions, subject to an average power budget. A decoy-based anti-jamming strategy is presented to confuse a jammer, causing it to waste power when disrupting decoy messages instead of real messages. We investigate the effectiveness of the anti-jamming strategy to guarantee timeliness of NextG communications in addition to reliability objectives, analyzing the Age of Information subject to jamming and channel effects. We assess the effect of power control, which determines the success of a transmission but also affects the accuracy of the adversary's detection, making it more likely for the jammer to successfully identify and jam the communication. The results demonstrate the feasibility of mitigating eavesdropping and jamming attacks in NextG communications with information freshness objectives using a decoy to guarantee timely information transfer.
description: 6 pages, 8 figures
Additional file 1 of How robust are findings of pairwise and network meta-analysis in the presence of missing participant outcome data?
Creators: name: Spineli, Loukia M.
name: Kalyvas, Chrysostomos
name: Papadimitropoulou, Katerina
Publisher: name: figshare
Year: 2021
Subjects: subject: Statistics
subject: FOS: Mathematics

description: Additional file 1. Reference list of analysed pairwise meta-analyses from Cochrane systematic reviews.
Transferring the Benefits of Water Quality Enhancements in Small Catchments
Creators: name: Black, Andrew
name: Colombo, Sergio
name: Hanley, Nick
name: Tinch, Dugald
name: Aftab, Ashar
name: Bergmann, E. Ariel
name: Black, Andrew
name: Colombo, Sergio
name: Hanley, Nick
name: Tinch, Dugald
name: Aftab, Ashar
name: Bergmann, E. Ariel
Publisher: name: Unknown
Year: 2006
Subjects: Resource /Energy Economics and Policy

description: The Water Framework Directive (WFD) sets targets of "Good Ecological Status" for water bodies across the EU. Environmental regulatory authorities must undertake economic analysis of all water bodies as part of the process of drawing up catchment management plans. In this paper, we test the transferability of benefit estimates across the kinds of smaller catchments where original benefits estimation is unlikely to be undertaken on grounds of costs. This is done in a context where agricultural-source nonpoint pollution and irrigation water abstraction are the main threats to ecological status.
Order Parameters in XXZ-Type Spin 1/2 Quantum Models with Gibbsian Ground States
Creators: name: Skrypnik, Wolodymyr
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A class of general spin 1/2 lattice models on hyper-cubic lattice $Z^d$, whose Hamiltonians are sums of two functions depending on the Pauli matrices $S^1$, $S^2$ and $S^3$, respectively, are found, which have Gibbsian eigen (ground) states and two order parameters for two spin components $x$, $z$ simultaneously for large values of the parameter $α$ playing the role of the inverse temperature. It is shown that the ferromagnetic order in $x$ direction exists for all dimensions $d\geq 1$ for a wide class of considered models (a proof is remarkably simple).
description: Published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Two-Component Spinorial Formalism using Quaternions for Six-dimensional Spacetimes
Creators: name: Venâncio, Joás
name: Batista, Carlos
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this article we construct and discuss several aspects of the two-component spinorial formalism for six-dimensional spacetimes, in which chiral spinors are represented by objects with two quaternionic components and the spin group is identified with $SL(2;\mathbb{H})$, which is a double covering for the Lorentz group in six dimensions. We present the fundamental representations of this group and show how vectors, bivectors, and 3-vectors are represented in such spinorial formalism. We also complexify the spacetime, so that other signatures can be tackled. We argue that, in general, objects built from the tensor products of the fundamental representations of $SL(2;\mathbb{H})$ do not carry a representation of the group, due to the non-commutativity of the quaternions. The Lie algebra of the spin group is obtained and its connection with the Lie algebra of $SO(5,1)$ is presented, providing a physical interpretation for the elements of $SL(2;\mathbb{H})$. Finally, we present a bridge between this quaternionic spinorial formalism for six-dimensional spacetimes and the four-component spinorial formalism over the complex field that comes from the fact that the spin group in six-dimensional Euclidean spaces is given by $SU(4)$.
description: 47 pages