Declining reproductive performance is a serious breeding concern in many countries. To reveal the situation in Norwegian cattle, trends in reproductive performance were studied using insemination reports from 1985 to 2005 and data based on herd recording files from 1989 to 2005. The total number of first services was 469.765 in 1985 declining to 335.712 in 2005. The number of recorded herds and...

The response of twenty acid-sensitive headwater catchments in Nova Scotia to acidic deposition was investigated for the period 1850–2100 using a dynamic hydrochemical model (MAGIC: Model of Acidification of Groundwater in Catchments). To ensure robust model simulation, MAGIC was calibrated to the long-term chemical trend in annual 5 lake observations (13–20 years). Model simulations indicated t...

Forests cover about 56% of the land area in Sweden and forest damage due to strong winds has been a recurring problem. In this paper we analyse recorded storm damage in Swedish forests for the years 1965–2007. During the period 48 individual storm events with a total damage of 164 Mm3 have been reported with the severe storm on 8 to 9 January 2005, as the worst with 70 Mm3 damaged forest. For t...

Prevalence is of essential importance in biomedical and public health research. In the “classic” paradigm it has been studied for each disease individually. Accumulating evidence shown that diseases can be “correlated.” Joint analysis prevalence potentially provide important insights beyond individual-disease but not well pursued. this study we take advantage unique Taiwan National Health Insur...

A general discrete-time stochastic control model is developed which encompasses many wellknown economic models. In the context of the general model, sufficient conditions are derived for the equivalence and approximate equivalence of myopic (sequential single-period) and global (simultaneous multi-period) expected return maximization. A bound provided for the global return loss resulting from m...