Abstract A novel trajectory tracking strategy is developed for a double actuated swing in a hydraulic construction robot.Specifically, a nonlinear hydraulic dynamics model of a double actuated swing is established, and a parameter adaptive sliding mode control strategy is designed to enhance the trajectory tracking performance.When an object is gra
Spatial factors as contextual qualifiers of information seeking
Introduction.This paper investigates the Mat ways in which spatial factors have been approached in information seeking studies.The main attention was focused on studies discussing information seeking on the level of source selection and use.Method.Conceptual analysis of about 100 articles and books thematizing spatial issues of information seeking.