after Schulkin solicited bids from 23 stores in the area to find the business that would promise to spend the highest percentage of Carrotmob profits on more energy-efficient lighting. The crowd spent more than $9,200 at the K&D Market, which then fulfilled its pledge to plow 22% of the day’s revenue into greener lighting.Since then, Carrotmobs have branched out to 10 other U.S. cities-with ...
평점을 두고 있다.PMV지표는 1천3백명의 피험자를 통해 얻은 자료를 바탕으로 PPD(Predicted Percentage Dissatisfied)를 제시한다. PPD란 PMV값이 주어지면 전체의 몇%가 불쾌하게 느끼는가를 알려주는 예측치다.PMV에 의한 쾌적성 예측 방식은 최근의 에어컨 제어에 유용하게 사용되고 있다. 쾌적한 온열 환경을 ...
the minerals as hydroxyl. The mantle's rocks are now thought to have as much water, in the form of hydroxyl, as a good percentage of the oceans, and seem to be an important part of the recycling of water through the top layers of Earth. Recent studies also indicate that the hydrogen in the hydroxyl may contribute to the mantle's electrical conductivity. Beneath the mantle is the planet's core ...
'프로'를 확대 연역한 '프로테이지'(protage)까지 만들어 쓰고 있는데 이것은 '퍼센테이지'(percentage)가 옳은 표현이다.만일 퍼센트 퍼밀이 외래어라서 마땅하지 않다면 퍼센트는 푼(分), 퍼밀은 이(厘)로 하는 것이 어떨까. 우리는 전래로 1할(割)은 1/10, 1푼(分)은 1/100, 1리(厘)는 1/1,000로 써왔기 때문이다 ...
As they receded, the light they emitted shifted in the direction of lowenergy red light.This meant that a large percentage of the light emitted by the stars might be shifted to such an extent that their energy content grew very low and they were not capable of lighting up the sky. There it was—the sky was black because the universe was expanding. This was so attractive a suggestion that in ...
동아사이언스
디라이브러리
DS스토어
팝콘플래닛
