The technique for machine-aided indexing developed at the Defense Documentation Center (DDC) is illustrated on a randomly chosen abstract. Additional text is provided in coded form so that the reader can more fully explore this technique. (2 references) (Author)

Groups of middle-aged and elderly women were compared on problem solving behavior. Results indicated a decline in the use of classification skills among the elderly and an inability to use constraint-seeking questions. (ST)

This paper describes how the problem of resolution of syntactic ambiguities is approached in the parser PHRASE, developed for use in experiments in automatic indexing and extracting. PHRASE is a multi-level parser for declarative sentences, in which the syntactic structure is built up in four stages. (10 references) (Author)

A method of constructing a check digit for nonconventional chemical codes is described. (5 references) (Author)

A system of automatic indexing based on Baye's theorem is described briefly. (18 references) (Author)

The author describes a method of automatic indexing using the assignment of priority to verbs which may also be viewed as a simulation of how a person classifies documents. (15 references) (Author/SJ)

The need to provide reliable information on the properties of substances and materials has led to the proposed establishment of a numerical data system. The problems this poses, the most urgent of which is that of developing basic methodological principles underlying the data system processes, are discussed. (32 references) (Author/KE)

Because of an absence of theory, rules and conventions for thesaurus construction and maintenance, an investigation of how thesauri are actually updated was conducted. Two concepts crucial to any theoretical foundation of thesauri and two techniques for systematic updating of a thesaurus are presented for consideration. (46 references) (Author/KE)

There are six major studies of the effect of indexing depth on retrieval performance. They differ in purpose, methodology, measures, indexing language, field of study, and data base--nevertheless, all have found depth of indexing to have the same effect upon information retrieval. (13 references) (Author/NH)

The adaptability of the theory of integrative levels to a generalised classification scheme is questioned in that its hypotheses have not been adequately developed and confirmed. It is suggested that not enough cognisance has been taken of twentieth century relativistic thinking in which space-time is treated as a continuum. (14 references)…

The impact of the specialist researcher on archives has removed them from the category of repositories for the records of a corporate body and transformed them into dynamic information centers. It is in the wide dissemination of vast historical information that the future of archives lies. (Author/SJ)

This research tests an information-processing model that can be applied to various systems composed of individuals, groups and different organizations. (LN)

The author provides a summary of research on channel capacity. Much of this research can be interpreted as contradictory to opinions in certain quarters that would restrict information input because of channel capacity and multiple stimulus modes due to channel interference." Appended are approximately 100 references. (Editor/AK)