Reforming Barriers
How to optimize the traffic efficiency with given structures of the road networks?
- What if, in a city, when most of the road networks are constructed, where you cannot widen the streets, but you still want to optimize the traffic efficiency in some way?
Algorithms
Dissolution
Friendships end for many different reasons. Sometimes friends move away from each other and the relationship wanes due to the distance. Digital technology has however made geographic distance less of an obstacle to maintaining a friendship. Sometimes divorce causes an end to friendships, as people drop one or both of the divorcing people. For young people, friendships may end as a result of acceptance into new social groups.
Friendships may end by fading quietly away or may end suddenly. How and whether to talk about the end of a friendship is a matter of etiquette that depends on the circumstances.