4.6 • 32K Ratings
🗓️ 25 October 2011
⏱️ 27 minutes
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0:00.0 | Okay, my name is Gert Jan Olster. |
0:05.3 | My last name is Olster. |
0:06.7 | Spellt is OLSDER. |
0:09.6 | My 1867, which in the Netherlands means Jardiett. |
0:14.8 | Before he retired, here Jan Olster was a university professor in applied mathematics. |
0:21.6 | In 1975, Olster was 31 years old. |
0:25.2 | He and his colleagues at 20 university were very bright. |
0:30.8 | They thought they could do anything. |
0:35.6 | It simply popped up suddenly. |
0:37.4 | Why don't we work on population planning? |
0:41.1 | Of course. |
0:41.9 | Population planning. |
0:43.0 | What else should a mathematician be working on? |
0:45.8 | Olster's crew imagined an island nation with no emigration or immigration, |
0:51.3 | just births and deaths. |
0:53.2 | It looked like a nice mathematical problem. |
0:55.5 | The essential riddle was this. |
0:57.5 | As the population aged and as longevity increased, what was the right birth rate to prevent |
1:03.7 | the island from becoming overpopulated? |
1:06.8 | Olster and his colleagues worked hard on the problem, and they came up with an elegant |
1:11.0 | equation. |
1:12.4 | Their research paper was called Population Planning, a distributed time optimal control |
... |
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