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Courtesy of Society for Science & the Public. At age 12, Audrey Glende has found a way to help save lives — fish lives. Glende realized that fish waste produces the toxic chemical ammonia that ...
A science fair or engineering fair is an event hosted by a school that offers students the opportunity to experience the practices of science and engineering for themselves. In the United States, the Next Generation Science Standards makes experiencing the practices of science and engineering one of the three pillars of science education.
The best part of the science fair, Recio said, is testing out experiments. Third grade student William Kim admires a winning science fair project on ants at Miller High School on Friday, Jan. 19 ...
The Regeneron International Science and Engineering Fair (ISEF) is an annual science fair in the United States. [1] It is owned and administered by the Society for Science, [2] a 501(c)(3) non-profit organization based in Washington, D.C. [3] Each May, more than 1800 students from roughly 75 countries and territories compete in the fair for scholarships, tuition grants, internships, scientific ...
For example, when there is a single house and two people, every allocation of the house will be unfair to one person. Therefore, several common approximations have been studied, such as maximin-share fairness (MMS) , envy-freeness up to one item (EF1), proportionality up to one item (PROP1), and equitability up to one item (EQ1).
Gender-based price discrimination is the practice of offering identical or similar services and products to men and women at different prices when the cost of producing the products and services is the same. [52] In the United States, gender-based price discrimination has been a source of debate. [53]
For example, if the fertilizer was spread by a tractor but no tractor was used on the unfertilized treatment, then the effect of the tractor needs to be controlled. A scientific control is an experiment or observation designed to minimize the effects of variables other than the independent variable (i.e. confounding variables ). [ 1 ]
Product differences are the root cause of manufacturers' monopoly, but because the differences between products in the same industry are not so large that products cannot be replaced at all, and a certain degree of mutual substitutability allows manufacturers to compete with each other, so mutual substitution is the source of manufacturer ...