Tunneling and Underground Excavation Coding Manual,

摘要

The Tunneling and Underground Excavation (TUNEX) Coding Manual contains detailed directives on transcription of data from relevant documents. It includes nearly all elements of the Interagency Committee on Excavation Technology Activity Classification in excavation technology and covers more than 90percent of all key words listed in the U.S. Geological Survey's Thesaurus of Index Words in Excavation Technology. The entire coding scheme is designed for machine storage and retrieval of data. The transcription scheme is designed to provide two basic types of information related to any document:an index of data content of the document for generation of computer abstracts and bibliographic listings;and storage and retrieval of the numerical and other hard data of the document. Coding of the document for indexing is done by using three forms designated T1, T2,and Z. Cards T1and T2comprise more than half of the manual and include indexing and sight characterization. Detailed data transcription is done using the free field format (FFF) forms included in the manual. An example of a step by step procedure is presented for coding data sets as tables rather than standard FFF. Card Z,containing bibliographic data,includes information on publication characteristics and transcription logistics of the data sets.