Identification of the age-period-cohort model and the extended chain-ladder model (2008)
Kuang, D., Nielsen, B., Nielsen, J. P.
We consider the identification problem that arises in the age-period-cohort models as well as in the extended chain-ladder model. We propose a canonical parameterization based on the accelerations of...
Forecasting with the age-period-cohort model and the extended chain-ladder model (2008)
Kuang, D., Nielsen, B., Nielsen, J. P.
We consider forecasting from age-period-cohort models, as well as from the extended chain-ladder model. The parameters of these models are known only to be identified up to linear trends. Forecasts...
Valuation Of Currency Options In Target Zone Models With Cox Realignments (2007)
Steen Jørgensen, Kristian R. Miltersen, Lene B. Nielsen, B. Nielsen
We develop a model to price currency options in a Krugman (1991) exchange rate target zone model with realignment risk. We adapt the realignment scenario of Dumas, Jennergren, and Naslund (1995) with...
Planteudtræk virksomt mod skurv (2006)
Nielsen, B., Hockenhull, J., Bengtsson, M.V.
Planternes forsvarssystem mod bakterier og svampe udgøres af en række barrierer, herunder stoffer som tanniner og saponiner – bitre stoffer, der findes i blade, bark eller grene og som...
Welfare, health and product quality in organic beef production - a Danish perspective (2005)
Organic beef production in Europe is based on grazing in the summertime and feeding of minimum 60% of roughage during the whole year. Although these recommendations were intended to improve health...
Nielsen, Dr. B., Thamsborg, Professor S.M., Andersen, Dr. H.R., Kristensen, Dr. T.
The objective of this study was to estimate herbage intake in Danish Friesian and Danish Jersey steers at an age of 8-9 months on ryegrass / white clover pasture. The steers were turned out on...
Nielsen, Dr. B., Thamsborg, Dr. S.M., Andersen, Dr. H.R., Kristensen, Dr. T.
The objectives of this study were (1) to estimate herbage intake in spring and late summer in Danish Friesian steers during their first grazing season on ryegrass / white clover pasture and (2) to...
Shot Noise in Negative-Differential-Conductance Devices (2002)
Song, W., Mendez, E. E., Kuznetsov, V., Nielsen, B.
We have compared the shot-noise properties at T = 4.2 K of a double-barrier resonant-tunneling diode and a superlattice tunnel diode, both of which exhibit negative differential-conductance (NDC) in...
Conditional test for rank in bivariate canonical correlation analysis (2001)
The likelihood ratio test for the hypothesis that the smaller of two canonical correlations is zero is nonsimilar; the distribution of the test statistic depends on the value of the largest canonical...
The likelihood-ratio test for rank in bivariate canonical correlation analysis (1999)
The likelihood-ratio test for the hypothesis that the smallest of two canonical correlations is zero is Bartlett adjustable. This theoretical property says that the moments of the test criterion and...
Diabetic kidney disease: the role of growth factors (1998)
Flyvbjerg, A, Grobaek, H, Bak, M, Nielsen, B, Christiansen, T, Hill, C, ...
C. Nicolle, T. Ross, G. Burnett, A. Stahl, J. Petzall, ...
of ATT systems in relatioN to elderly and disabled travellers
Bartlett correction of the unit root test in autoregressive models (1997)
The usual conditions for a Bartlett correction are not fulfilled when testing for a unit root in a Gaussian autoregressive model. However, by expanding the moments of the likelihood ratio statistic...
Coatings Probed by Positrons (1995)
Nielsen, B., Hulett, L., Wallace, S., Xu, J., Szeles, C., Lynn, K., ...
Thin film coatings such as TiN and polymers (paint) have been studied using positrons. Positrons provide information on defect structure. It is shown how the positron response is related to...
Image Quality Tests for Dental X Ray Equipment (1993)
Three different phantoms are introduced to cover all modalities within dental X ray techniques: standard dental imaging, cephalostat imaging and panoramic imaging. Comparisons of different imaging...
Image Quality Tests of Conventional and Digital Radiographic Equipment (1993)
The optimisation of image quality and at the same time the reduction of the absorbed dose to the patient is a main task for physicists and engineers involved in diagnostic radiology. A necessity for...
Jensen, C.H., Teisner, B., Højrup, P., Rasmussen, H.B., Madsen, O.D., Nielsen, B., ...
Fetal antigen 1 was purified from second trimester human amniotic fluid by immunospecific affinity chromatography followed by reversed-phase chromatography. Fetal antigen 1 is a single chain...
Design and performance of the DELPHI data acquisition system (1992)
Adam, W, Adye, T, Albert, JN, Beneteau, L, Bouquet, B, Buytaert, J, ...
Age determination of sediment cores from the Panama Basin (1991)
Pedersen, Thomas F, Nielsen, B, Pickering, Mark
High-resolution percent Corg and delta18Oforam records obtained from Panama Basin core Atlantis II 54-25PC and additional data from nearby core P7 show that enhanced burial of organic carbon has...