Any material used for construction purpose is called as building material. To construct a building naturally we use clay, wood, leaves, sand, rocks etc. and these all comes under naturally occurring materials. Man-made products are also used in building materials. Insulation, plumbing, roofing work, carpentry works comes under manufacturing of building materials. By using building materials make-up of habitats and structures like homes are provided.
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 June, 2014