JCR implies Journal Citation Reports provides a systematic, objective means to evaluate the world’s leading research journals. It offers a unique perspective for journal evaluation and comparison by accumulating and tabulating citation and article counts from virtually all specialties in the sciences, social sciences, and technology fields.
The JCR lists the most outstanding publications of academics. These may help you excel in your field and make new contributions in respective fields of your interest. Simply said, its a database of worlds best journals.