The point where the total sum of a pressure field acts in a body is called Center of pressure. A force acts through that point that causes no moment about that point. The value of the integrated vectorial pressure field tells about the total force vector acting at the center of pressure. The resultant force and center of pressure location produce equivalent force and moment on the body as the original pressure field.
The impact factor of journal provides quantitative assessment tool for grading, evaluating, sorting and comparing journals of similar kind. It reflects the average number of citations to recent articles published in science and social science journals in a particular year or period, and is frequently used as a proxy for the relative importance of a journal within its field. It is first devised by Eugene Garfield, the founder of the Institute for Scientific Information. The impact factor of a journal is evaluated by dividing the number of current year citations to the source items published in that journal during the previous two years.
Last date updated on July, 2014