FREE OPERATIONS.

Grouping Operations in Free RecallZ

In free recall, Ss search for stable groupings of the list words, which groups become functional recall units. The experiments reported show that recall suffers if S is forced to adopt groupings differing from those used previously. Although such regroupings disrupt retrieval processes in recall, they do not reduce recognition memory for the list words, presumably because recognition depends on...

Quantifier-free definable graph operations preserving recognizability

We show that an operation on graphs, and more generally, on relational structures that has an inverse definable by a monadic secondorder transduction preserves the family of recognizable sets.

Derivative-Free Optimization for Oil Field Operations

A variety of optimization problems associated with oil production involve cost functions and constraints that require calls to a subsurface flow simulator. In many situations gradient information cannot be obtained efficiently, or a global search is required. This motivates the use of derivative-free (non-invasive, blackbox) optimization methods. This chapter describes the use of several deriva...

Free Space Optical Communication for Tactical Operations

Schedule-free high-frequency transit operations

High-frequency transit systems are essential for the socioeconomic and environmental well-being of large and dense cities. The planning and control of their operations are important determinants of service quality. Although headway and optimization-based control strategies generally outperform schedule-adherence strategies, high-frequency operations are mostly planned with schedules, in part be...