1,987 research outputs found
Beta-Stacy survival regression models
No full textThis paper introduces a class of survival models for discrete time-to-event data with random right censoring. Flexible distributions for the
survival times are constructed by modelling the random survival functions as discrete-time beta-Stacy processes (DBS) and by introducing
the regression effects via their prior means. Identifiability is attained
by defining the DBS precision parameters as appropriate functions of
the regression coefficients. By the conjugacy of the beta-Stacy process
with respect to random right censoring, marginal posterior inferences
for all model parameters can be efficiently approximated using the
standard Gibbs sampler. The latter also yields a Monte Carlo approximation for the predictive distributions of the survival probabilities for
future covariate profiles. We provide three clinical applications of the
DBS survival regression framework comparing its estimates with those
of parametric, semiparametric and non-parametric survival models
POLA KALIMAT PADA KUMPULAN DONGENG GADIS KOREK API KARYA H.C. ANDERSEN (SUATU KAJIAN SINTAKSIS)
No full textThis study described syntactic structure on fairy-tale collection of Gadis Korek Api by H.C. Andersen. The study which seen from syntactic structure is sentence pattern based on function category, category, and syntactic role. This study aimed to describe syntactic structure on fairy-tale collection of Gadis Korek Api by H.C. Andersen and it’s distribution towardh Indonesian language. This research used qualitative method and note method was employed for collecting the data. In analysing the data, the researcher used Agih method by applying Immediate Constituent Analysis technique (ICA) as a basic technique. A book entitled Gadis Korek Api and others fairy-tale are the work of danish author, H.C. Andersen that used Indonesian standard. The analysis showed syntactic structure of fairy-tale language which form of sentence pattern based on the user, the pattern of imperative sentence, sentence pattern contains conjunction, and sentence pattern of complex sentences. Keywords: Sentence Pattern; Fairy-tale; Syntactic.</p
Martin Andersen Nexø
No full textThis is a short presentation of the main works of the Danish author Martin Andersen Nexø
A class of neutral to the right priors induced by superposition of beta processes
No full textA random distribution function on the positive real line which belongs to the class of neutral to the right priors is defined. It corresponds to the superposition of independent beta processes at the cumulative hazard level. The definition is constructive and starts with a discrete time process with random probability masses obtained from suitably defined products of independent beta random variables. The continuous time version is derived as the corresponding infinitesimal weak limit and is described in terms of completely random measures. It takes the interpretation of the survival distribution resulting from independent competing failure times. We discuss prior specification and illustrate posterior inference on a real data example.Bayesian nonparametrics; beta process; beta-Stacy process; completely random measures; neutral to the right priors; survival analysis
The Andersen Aerobic Fitness Test: reliability and validity in 10-year-old children
No full text© 2014 Aadland et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.Background: High aerobic fitness is consistently associated with a favorable metabolic risk profile in children. Direct measurement of peak oxygen consumption (VO2peak) is often not feasible, thus indirect tests such as the Andersen test are required in many settings. The present study seeks to determine the reliability and validity of the Andersen test in 10-year-old children.
Methods: A total of 118 10-year-old children (67 boys and 51 girls) were recruited from one school and performed four VO2peak tests over three weeks: three Andersen tests (indirect) and one continuous progressive treadmill test (direct). Of these, 104 children provided valid data on all Andersen tests and 103 children also provided valid data on the direct treadmill test. Reliability and validity were assessed using Bland Altman plots and linear regression analysis.
Results: Bias (mean change) and random error (limits of agreement) were 26.7±125.2 m for test 2 vs. test 1 (p<.001 for mean difference) and 3.9±88.8 m for test 3 vs. test 2 (p = .514 for mean difference). The equation to estimate VO2peak suggested by Andersen et al. (2008) showed a poor fit in the present sample; thus, we suggest a new equation: VO2peak = 23.262+0.050*Andersen distance –3.858*gender –0.376*body weight (R2 = 0.61, standard error of the estimate = 5.69, p<.001, boys = 0, girls = 1).
Conclusions: The Andersen test provided reliable and valid data on a group level. However, a substantial degree of individual variability was found for estimates of VO2peak. Researchers should be aware of the amount of noise in indirect tests that estimate aerobic fitness.Seksjon for idrettsmedisinske fag / Department of Sports Medicin
Did Houston clients of Arthur Andersen recognize publicly available bad news in a timely fashion?
No full textDespite the allegations of audit failure and the enormous publicity surrounding Arthur Andersen’s indictment, there is no systematic empirical evidence on characteristics of accounting information of clients of Arthur Andersen vis-à-vis other Big Six auditors. I examine whether earnings of Andersen’s Houston-based clients are timely in reporting bad news about future cash flows. I find that relative to a control group consisting of Houston-based clients audited by other Big Six auditors, earnings of Andersen clients are less timely in reporting bad news. Further, it appears that operating accruals of clients of Andersen are less effective in accelerating the timely recognition of bad news than operating accruals of non-Andersen clients. The findings suggest that the clients of Andersen’s Houston office engaged in aggressive accounting practices, including delayed recognition of publicly available bad news
Domain-Oriented Conversation with H. C. Andersen
No full textThis paper describes the first running prototype of a system for domain-oriented spoken conversation with life-like animated fairy tale author Hans Christian Andersen. Following a brief description of the system architecture, we present our approach to the highly interrelated issues of making Andersen life-like, capable of domain-oriented conversation, and affective. The paper concludes with a brief report on the recently completed first user test
A. P. Andersen - Saga of a Danish Immigrant
No full textPastor Ove Nielsen, retired assistant director of Lutheran World Relief, provided the initiative for this biography when he wrote to the author and suggested that research be done and a biography be written for The Bridge on Anders Peder Andersen. Andersen, a Danish immigrant and farmer in Montana, was knighted by the King of his native land at which time attention was called to his many accomplishments
A. P. Andersen - Saga of a Danish Immigrant
No full textPastor Ove Nielsen, retired assistant director of Lutheran World Relief, provided the initiative for this biography when he wrote to the author and suggested that research be done and a biography be written for The Bridge on Anders Peder Andersen. Andersen, a Danish immigrant and farmer in Montana, was knighted by the King of his native land at which time attention was called to his many accomplishments
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