|Sustainable development means different things to different people. The definition is intentionally vague to increase the possibility of compromise on hot issues on which reasonable people may differ. To those reduced toward balancing economic and environmental goals .The development says economic growth, and sustainable implies full consideration of environmental factors. It is becoming abundantly clear, however, that to others the term implies virtually no additional economic development. The second position is made with great emotion but insufficient facts and analysis that the path of development is unsustainable because the planet is about to show on humanity's wastes and there is not enough land to meet everyone's demands. Even though that faction, inherently suspicious of technological change and economic growth, was unable to obtain all that it wanted, it is today much closer to its goal.
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.