Results 91 to 100 of about 114,350 (225)

Analysis of possible systematic errors in the Oslo method

, 2011
In this work, we have reviewed the Oslo method, which enables the simultaneous extraction of level density and gamma-ray transmission coefficient from a set of particle-gamma coincidence data.
Betak, E., Bürger, A., Guttormsen, M., Görgen, A., Krticka, M., Larsen, A. C., Nyhus, H. T., Rekstad, J., Schiller, A., Siem, S., Toft, H. K., Tveten, G. M., Voinov, A. V., Wikan, K.   +13 more
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Extracting a Robust U.S. Business Cycle Using a Time-Varying Multivariate Model-Based Bandpass Filter [PDF]

In this paper we investigate whether the dynamic properties of the U.S. business cycle have changed in the last fifty years. For this purpose we develop a flexible business cycle indicator that is constructed from a moderate set of macroeconomic time ...
Drew Creal, Eric Zivot, Siem Jan Koopman
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Gamma-ray strength function and pygmy resonance in rare earth nuclei

, 2000
The gamma-ray strength function for gamma energies in the 1-7 MeV region has been measured for 161,162-Dy and 171,172-Yb using the (3-He,alpha gamma) reaction. Various models are tested against the observed gamma-ray strength functions.
A. Bohr, A. Gilbert, A. Schiller, A. Schiller, A. Schiller, A. Voinov, A.V. Ignatyuk, A.V. Ignatyuk, D. Bohle, E. Melby, E. Melby, E. Ramakrishnan, F. Bec̆vář, G.A. Bartholomew, G.M. Gurevich, I. Bergqvist, J. Kopecky, J. Kopecky, J. Rekstad, J.M. Blatt, L. Henden, M. Guttormsen, M. Guttormsen, M. Guttormsen, M. Guttormsen, M. Guttormsen, M. Igashira, N. Dinh Dang, O.T. Grudzevich, O.T. Grudzevich, Osman Yilmaz, P. Axel, R.F. Barrett, S. Joly, S. Siem, S.F. Mughabghab, S.F. Mughabghab, S.G. Kadmenskiĭ, S.S. Dietrich, Satoshi Mizuno, T.S. Tveter, W.E. Ormand, W.E. Ormand, Yu.P. Popov   +43 more
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A General Framework for Observation Driven Time-Varying Parameter Models [PDF]

We propose a new class of observation driven time series models that we refer to as Generalized Autoregressive Score (GAS) models. The driving mechanism of the GAS model is the scaled likelihood score. This provides a unified and consistent framework for
Andre Lucas, Drew Creal, Siem Jan Koopman   +2 more
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An analysis of poverty and aquatic resources use - focusing especially on the livelihoods of the poor - in Cambodia [PDF]

, 2000
The main objectives of this report, which is based on the current literature and key informant interviews, is to assess and analyse the nature and distribution of poverty and aquatic resources use, focusing especially on the livelihoods of the poor.

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High survival and treatment success sustained after two and three years of first‐line ART for children in Cambodia

Journal of the International AIDS Society, 2010
Background Long‐term outcomes of antiretroviral therapy (ART) in children remain poorly documented in resource‐limited settings. The objective of this study was to assess two‐and three‐year survival, CD4 evolution and virological response among children ...
Petros Isaakidis, Marie‐Eve Raguenaud, Vantha Te, Chhraing S Tray, Kazumi Akao, Varun Kumar, Sopheak Ngin, Eric Nerrienet, Rony Zachariah   +8 more
doaj   +1 more source

Multivariate Convex Approximation and Least-Norm Convex Data-Smoothing [PDF]

The main contents of this paper is two-fold.First, we present a method to approximate multivariate convex functions by piecewise linear upper and lower bounds.We consider a method that is based on function evaluations only.However, to use this method ...
Hertog, D. den, Hoffmann, A.L., Siem, A.Y.D.   +2 more
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A youth advisory group on health and health research in rural Cambodia

Global Bioethics
Engaging young people in health research has been promoted globally. We explored the outcomes of youth advisory group on health and research engagement (YAGHRE) in rural Cambodia.
Mom Ean, Rupam Tripura, Phann Sothea, Uch Savoeun, Thomas J. Peto, Sam Bunthynn, James J. Callery, Ung Soviet, Lek Dysoley, Phaik Yeong Cheah, Bipin Adhikari   +10 more
doaj   +1 more source

The Correct Kriging Variance Estimated by Bootstrapping [PDF]

The classic Kriging variance formula is widely used in geostatistics and in the design and analysis of computer experiments.This paper proves that this formula is wrong.Furthermore, it shows that the formula underestimates the Kriging variance in ...
Hertog, D. den, Kleijnen, J.P.C., Siem, A.Y.D.   +2 more
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Evidence for the pair-breaking process in 116,117Sn

, 2009
The nuclear level densities of 116,117Sn below the neutron separation energy have been determined experimentally from the (3He,alpha gamma) and (3He,3He gamma') reactions, respectively. The level densities show a characteristic exponential increase and a
A. C. Larsen, A. Gilbert, A. Schiller, A. Voinov, G. E. Mitchell, M. Guttormsen, R. Chankova, R. Firestone, S. F. Mughabghab, S. G. Kadmenskii˘, S. G. Kadmenskii˘, S. Siem, U. Agvaanluvsan   +12 more
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