|A small electronic device inserted into the ear of deaf whose capability level of hearing is null. It can be placed behind the ear or inside the ear through surgical procedure. It has a microphone, speech processor, transmitter and an electrode array. It is different from hearing aid and cannot restore normal hearing. Scholarly journal is a peer-reviewed journal in which scholarship relating to a particular academic discipline is published. Scholarly journals serve as forums for the introduction and presentation for scrutiny of new research, and the critique of existing research. Content typically takes the form of articles presenting original research, review articles, and book reviews. The term Scholarly journal applies to scholarly publications in all fields; this article discusses the aspects common to all academic field journals.