Recognizing these individual personality differences is important to ensure animals are treated well, says professor Marina von Keyserlingk, who led the research team from UBC's animal welfare program in the faculty of land and food systems. 'Sometimes we are tempted to see only the herd, even though this herd consists of different individuals who cope differently with stressful events,' said von Keyserlingk. 'It's important to consider the individual's perspective, because even if conditions are good, on average, some animals may still suffer.' To gauge optimism and pessimism, the researchers set up an experiment involving 22 calves.
Before they started the experiment, they trained the calves to understand which of their choices would lead to a reward. In the training, each calf entered a small pen and found a wall with five holes arranged in a horizontal line, two-and-a-half feet apart. The hole at one end contained milk from a bottle, while the hole at the opposite end contained only an empty bottle and delivered a puff of air in calves' faces. The calves learned quickly which side of the pen held the milk reward. Once calves were trained, researchers presented bottles in one of the three intermediate holes, so that calves couldn't be sure if they would be rewarded with milk. The researchers predicted that the most optimistic calves would approach the bottle even if it were positioned close to the location that earlier gave them an empty bottle and puff of air.
Nov 14, 2017 Why hot water freezes faster than cold water Spanish researchers have discovered this effect in granular media, opening the door to the theoretical understanding of the Mpemba effect. Dairy calves are natural optimists or pessimists, just like us Date: February 8, 2018. Dairy calves are natural optimists or pessimists, just like us. Retrieved February 26, 2019.
In contrast, the most pessimistic calves would avoid approaching a bottle in the intermediate holes, even if it were close to the rewarded location. The calves varied in their responses, but individual calves remained consistent in their outlook and made similar choices three weeks apart. Creative inspire 61 6600 drivers. Researchers concluded that pessimism was a consistent individual trait, not just the result of temporary moods or emotions. The study also assessed fearfulness through standard personality tests that monitor how calves react to unfamiliar situations, such as the presence of a stranger or a foreign object.
Fearfulness and pessimism turned out to be closely related. 'Calves that were more fearful were also more likely to view the glass as half empty,' said von Keyserlingk. Research has shown that optimism and pessimism are also personality traits in humans, but little work has been done to investigate such personality differences in farm animals. 'The next step in our research will be to understand what type of rearing conditions help ensure that an individual animal has a good life,' added von Keyserlingk. 'For example, more pessimistic calves may require different types of housing and management than we currently provide.'
Energy Information Administration, based on Evaluate Energy Note: Hedging is a financial risk-reduction strategy that market participants can use to lock in future prices. The decline in crude oil prices since last summer has had a direct impact on oil producers' sales revenue, but hedging strategies have lessened the effects of lower prices on some producers' total revenue. Oil producers who adopt hedging strategies can reduce their price risk and generate smoother financial outcomes in unstable markets.
A common hedging practice is to sell futures and swaps to lock in desired prices for future production, a practice that can shield producers' revenue from decreasing prices. Analysis of hedging can be difficult because not all producers consistently report their hedging activity. In general, producers are not required to report hedge effectiveness in regulated financial statements. However, 32 U.S. Oil producers have consistently reported their hedge results in their financial statements. The portfolio of these producers shows a 22% decline in oil sales revenue, down $2.4 billion from $10.9 billion in third-quarter 2014 to $8.6 billion in fourth-quarter 2014. Vilama lakshmi komiks torrent.
But because of $1.3 billion from hedging activities, the combined sales and hedge revenue in fourth-quarter 2014 had a milder decrease of $1.1 billion. Principal contributors: Richard Yan, Jozef Lieskovsky, Jeff Barron.