A document is a document directly produced by people on the basis of their own practical experience in production, scientific research and social activities. It is also often called an original document (or a kind of document), and its recorded knowledge and information are novel, concrete and detailed.
Primary literature is the largest, most diverse, freshest, most widely used and most influential literature in the whole literature, such as periodical papers, patent documents, scientific and technological reports, conference proceedings, dissertations and so on. These documents are obviously innovative, practical and academic.
The second article
The product of document processing is a kind of document form, such as catalogue, abstract magazine (including short retrieval publications), which records the external characteristics of a disordered document, such as title, author, source and so on. , or compress its content into a brief introduction, abstract or abstract, and sort it according to a certain discipline or specialty. They can all be used as document retrieval tools to comprehensively and systematically reflect the document clues of a certain discipline, specialty or theme within a certain time and space, and are effective means to accumulate, report and retrieve documents.
Three documents
According to the given topic, the relevant first-level literature is analyzed and synthesized by using secondary literature, such as summary report, summary report, research report, technical forecast, data manual, first-level literature bibliography, second-level literature bibliography and index, and a special report or monograph is compiled. It is systematic, comprehensive and knowledgeable. It summarizes the scientific and technological knowledge of a certain field that human beings have mastered at a certain stage, and has the function of inheriting and accumulating the knowledge of predecessors and summing up experiences and lessons. It is convenient to systematically grasp the current level and trend of scientific and technological development and predict the prospect of scientific and technological development, so as to provide decision-making basis for making scientific research plans or economic development plans, determining research topics, proposing technical plans or construction plans, introducing advanced technologies and developing new products.