duration

Children’s Mental Health is Affected by Sleep Duration [sciencedaily.com]

science daily

Mathematics in Vietnam and Korea were mostly associated with the professional court paperwork of mathematicians and astronomers, whereas in Japan it was extra prevalent in the realm of personal faculties. Even after European arithmetic started to flourish through the Renaissance, European and Chinese arithmetic had been separate traditions, with vital Chinese mathematical output in decline from the thirteenth century onwards. Jesuit missionaries similar to Matteo Ricci carried mathematical ideas backwards and forwards between the 2 cultures from the sixteenth to 18th centuries, though at this level far more mathematical ideas had been getting into China than leaving. The excessive-water mark …