Research librarians should be literate in locating government resources at both federal and state levels. Although assistance with policy research may not be as frequently requested as other subjects, librarians need to be knowledgeable in this subject area. Policy resources produced by federal and state legislative and executive agencies can be challenging to locate and interpret. This article examines congressional and other governmental sources of policy information using an environmental catastrophe, the Tennessee Valley Authority (TVA) Coal Ash Spill in Kingston, Tennessee, as a case study to illustrate an approach to researching environmental policy information. Information on the Coal Ash Spill is an example of a request that might be received at any research assistance desk employing a cadre of librarians with specialization in various disciplines, including science and technology. [ABSTRACT FROM AUTHOR]

This paper addresses two of the problems commonly associated with LR parsing and syntax directed translation schemes, namely grammar stratification and excessively large table size, A solution is discussed which can eliminate stratification of the grammar by allowing the designer to embed semantics directly within the LR table (i.e., at shift and error entries instead of just at reduce entries) and to use global context to determine what semantics should be performed. The non‐stratified grammar can produce a significantly smaller LR table than the corresponding stratified grammar. The compatibility of this scheme with commonly used table compaction techniques is also discussed.

No abstract

No abstract

No abstract