As the size of livestock farms in The Netherlands is on the increase for economic reasons, an important question is how disease introduction risks and risks of onward transmission scale with farm size (i.e. with the number of animals on the farm). Here we use the epidemic data of the 1997-1998 epidemic of Classical Swine Fever (CSF) Virus in The Netherlands to address this question for CSF risk...

With the continuing pressure on Australia’s water resources and interand intra-annual rainfall variability, farmers, especially in rainfed agricultural and pastoral zones, have been developing farm dams as a mean of providing additional water sources for irrigation and stock. The density of farm dams has increased over time, and an accurate knowledge of the spatial distribution of farm dams is ...

This study assesses the reported farm income crisis in Canada and uses farm financial data to illustrate the importance and impact that management skills and practices have on farm income and net worth. For grain and oilseed farms, large farms produce higher revenues per hectare and achieve economies of scale on operating expenses, interest and depreciation, making them significantly more profi...

The economic well-being of most U.S. farm households depends on income from both onfarm and off-farm activities. Consequently, for many farm households, economic decisions (including technology adoption and other production decisions) are likely to be shaped by the allocation of managerial time among such activities. While time allocation decisions are usually not measured directly, we observe ...

Algorithmic skeletons intend to simplify parallel programming by providing a higher level of abstraction compared to the usual message passing. Task and data parallel skeletons can be distinguished. In the present paper, we will consider several approaches to implement one of the most classical task parallel skeletons, namely the farm, and compare them w.r.t. scalability, overhead, potential bo...

The STAR level-3 trigger is a MYRINET interconnected ALPHA processor farm, performing online tracking of N 53!#, 58000 particles (N 10*/5 445 per track) with a design input rate of R"100 Hz. A large-scale prototype system was tested in 12/99 with laser and cosmic particle events. ( 2000 Published by Elsevier Science B.V. All rights reserved.

To the careless observer and general critic the making of a law is a very easy thing. But to the actual lawmaker who meets the usual difficulties and encounters the practical obstacles it is a very different matter, and it may be of interest to many to follow the course of a bill from beginning to end. In the first place it may be said that the legislature is only the "machine" through which la...

CONTEXT Crash fatality and injury rates are higher on rural roadways than other roadway types. Although slow-moving farm vehicles and equipment are risk factors on rural roads, little is known about the characteristics of crashes with farm vehicles/equipment. PURPOSE To describe crashes and injuries for the drivers of farm vehicles/equipment and non-farm vehicles involved in an injury crash. ...

Sunny Day Farm was the home of the highest producing registered Jersey herd in the world at the time this study was conducted. The cows are housed in a freestall barn and manure is removed from the barn using a flush system. The manure treatment system on this farm includes the following components in series: an inclined stationary screen separator, a two–chambered settling basin, and a lagoon....