Recommender systems for learning: Building user and expert models through long-term observation of application use.

TEK is a deeply empirical scientific approach and is based on long-term observation.

All of this makes the area one of the best spots on Earth for long-term astronomical observation.

However, precise long-term observations show that the constellations change shape, albeit very slowly, and that each star has an independent motion.

Satellites enable us to provide consistent, long-term observations, 24 hours a day, 7 days a week.

April 8 - The first "long-term" observation of cloud dynamics in Saturn's atmosphere were published by mission scientists.

Earlier plans to ferry live sheep to the island for long-term observation were apparently scrapped.

The evidence is based on long-term observations and very complicated procedures and of course there are some doubters, some scientists who have a different opinion.

All of them were undergoing long-term observation.

The goal of its implementation is to provide future long-term observations of temperature and precipitation to be used to measure climate change.