Researchers estimate farms are responsible for about 13% of total global emissions, making it the world's second-largest source, after energy production.
To detect a 3 fold difference in risk between exposed and unexposed sows with 95% confidence and 80% power given a 10% prevalence of disease in the unexposed sows, with an estimated farm intracluster correlation coefficient of 0.1, a sample size of approximately 250 sows was required.
By some estimates farms and forests could offset as much as a billion tons of CO2 emissions annually, nothing to sneeze at.
One analogous situation where this approach has been used is in estimating farm-to-farm reproduction numbers in the 2001 UK foot-and-mouth virus epidemic [27].
We analyse data from four recent outbreaks of highly pathogenic avian influenza (HPAI) in commercial poultry to estimate the farm-to-farm reproductive number for HPAI.
In this paper, we analyse published data from four outbreaks of HPAI in commercial poultry in industrialised countries to estimate the farm-to-farm reproductive number of HPAI to explore the extent to which different intervention measures implemented during these outbreaks reduce the reproductive number.
In this study, the adaptive neuro-fuzzy inference system (ANFIS) is designed and adapted to estimate wind farm efficiency according to turbines number in wind farm.
The study was undertaken to estimate the farm energy savings in terms of fuel and time by using GPS guidance and/or autosteering systems in farm vehicles in the Upper-Midwest region of the USA.
Experts estimate the farm bill, signed by President Bush last spring, could increase federal spending on agriculture by 70percentt over the next six years, to as much as $180 billion, potentially violating limits for farm support set during the last round of global trade talks, but Mr. Zoellick's office disputed that.
According to one estimate, every farm worker employed in the U.S. supports 3.5 additional jobs off the farm jobs that would disappear if the grower moved operations to another country.
