The MIT Campus Police are in the constant position of figuring out whether or not to put a stop to the pranks, or to let them happen as long as everyone is kept safe.

FORBES: MIT Mourns 26-Year-Old Cop Killed By Boston Bombers

This is where money management is key: position-sizing requires constant adjustment, especially during periods of wide variance.

FORBES: When Blackjack Smarts Come to Wall Street

This tells you how much information is present at each position: variable positions contain little information while constant positions contain lots.

ECONOMIST: How (and why) to find a needle in a haystack | The

Despite their positive position in the sport, Clare admits funding is a constant problem for the GB women's team, who have just appointed a new coach in Dan McCaffrey.

BBC: Women face anxious wait

The software in the four-seater Piper Warrior light plane will allow Mr Cunningham to receive constant updates on the plane's height, position and speed at the touch of a button.

BBC: NEWS | UK | England | Oxfordshire | Blind pilot on target for record

Dennis has worked with organizations in that smug, apathetic position that follows continued success, and companies in the erratic, frantic state caused by the constant rise of new threats and the continual shift of focus.

FORBES: 5 Tips for Getting Complacent Employees Urgent

With Deacon off, Hull's former Wakefield half-back Sam Obst was a constant thorn in Wigan's side with his elusive running and his break set up the position for second rower Westerman to force his way over for an equalising try.

BBC: Wigan Warriors 14-12 Hull FC