It is a column of nervous tissue that is connected to the brain and lies in the vertebral column. From this spinal nerves emerges. It consists of nerve fibers that transmit impulse to and from brain. It helps in transfer of sensory and motor nerve impulses. It is cushioned by cerebrospinal fluid which acts as shock absorber. Spinal cord and brain constitutes the nervous system. It mainly acts as a center for reflex actions.
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.
Last date updated on September, 2014