Any kind of injury that occurs to the scalp or skull can be defined as head trauma. There are four types of head trauma and they are neuronal injuries, hemorrhages, vascular injuries and cranial nerve injuries. Symptoms of head trauma are leaking of cerebrospinal fluid, which can again lead to brain infection, depression in the head, an eye that is drifted to one side, wound/bruises on the scalp and skull fractures.
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