Some Estimates of Labor Contribution for Creating Digital Libraries

One of the main directions of modern technological development is the digitalization of various areas of activity. In the science, this forms integrated digital libraries include various digital objects, including digital copies of printed publications, 3D models of museum items, digitized images, audio and film materials. Scientific digital libraries are characterized by high requirements for the quality of digital copies of printed scientific sources, since any ambiguity or contamination within chemical formulas or mathematical expressions can lead to erroneous perception or misunderstanding of the meaning. Special requirements for digital copies are also imposed when digitizing rare editions and archival documents that are of scientific and historical value not only in their content, and in the notes of scientists in the margins of a book or archival document. Requirements for the quality of digitized materials determine the significant labor intensity of preparation; it is necessary to evaluate it when planning work on filling scientific libraries. This article contains a calculation methodology of span time for creating integrated digital scientific libraries using the example of the technology of forming a digital library "Scientific Heritage of Russia" (DL SHR). DL SHR contains detailed information about scientists, their most important publications (digital copies of full texts), related archival documents, as well as 3D models of museum items related to their activities. The developed methodology includes the decomposition of the entire technological process into a number of operations performed by specialists of a certain profile (librarians, editors, scan-operators, etc.). Each stage is divided into several operations, for each of which the time spent on the execution of works assigned to the unit within this operation is estimated. Such units can be a page of a book, an entire book, a biography of a scientist, etc. Span time estimation is carried out either from the published standards, or, in their absence, from the analysis of the experience of performing this operation. The article provides data on the calculation of time costs for individual operations, the formation of digital objects and their collections in relation to DL SHR based on Russian standards and 10 years of experience.