We utilize the situation calculus to develop a logical model of hypertext systems. The work builds upon the earlier work of Bieber and Kimbrough in the logical modeling of hypertext systems. In our presentation, a particular version of the situation calculus (which includes a language for programming complex actions) developed for the modeling of dynamic worlds and for the control of robotic ag...

Mathematical models for the electrical activity in cardiac cells are normally formulated as systems of ordinary differential equations (ODEs). The equations are nonlinear and describe processes occurring on a wide range of time scales. Under normal accuracy requirements, this makes the systems stiff and therefore challenging to solve numerically. As standard implicit solvers are difficult to im...

Water quality management policies on a river basin scale are of special importance in order to prevent and/or reduce environmental pollution caused by human sources. Industrial effluents are a priority issue particularly in Urban Wastewater Systems (UWS) that receive mixed household and industrial wastewaters, apart from rainfall water. In this paper, we present an analysis and implementation o...

Shapiro et al. [2005; 2006], presented a framework for representing goal change in the situation calculus. In that framework, agents adopt a goal when requested to do so (by some agent reqr ), and they remain committed to the goal unless the request is cancelled by reqr . A common assumption in the agent theory literature, e.g., [Cohen and Levesque, 1990; Rao and Georgeff, 1991], is that achiev...

The present research explores situations that demonstrate enhancing effects on motivation based on the amount of choice seen by individuals. Individuals who are intrinsically motivated see more choice in certain academic settings, including those that foster self-regulation and autonomy. Extrinsically motivated individuals are predicted to see more promise in reward and external regulation stra...

In the present investigation a series of experiments was run in an attempt to simulate: one aspect of food based behavior, satiation, during self-stimulation, and to replicate behavior peculiar to the self-stimulation situation with a food reward. For the first experiment a swivel was developed for concurrent intraorganismic fluid injection and intracranial electrical stimulation of the unrestr...

PURPOSE The purpose of this study is to find what medical students think the reward for their future work should be and whether they would keep their ideals or abandon them for prestige and wealth by analyzing the book reports of Cronin's The Citadel. METHODS Participants were 50 medical students of junior class. A month before the classroom lecture, the book and digital video disk were provi...

OBJECTIVES The association between depressive symptoms and psycho-organisational work environment has been established in the literature. Some studies have evaluated depressive symptoms in healthcare workers, but little research has been carried out among nurse managers. The aim of the study is to evaluate the depressive symptoms prevalence among nurse managers' population and work environment ...

Remembering information is a fundamental aspect of cognition present in numerous natural systems. It allows adaptation the behavior as function previously encountered situations. For instance, many living organisms use memory to recall if given situation incurred penalty or reward and rely on that avoid reproduce situation. In groups, commonly studied case where individual members are themselve...

Excessive lying is generally considered to be a hallmark of psychopathy. Meanwhile, the empirical evidence for association between psychopathy and somewhat limited. In present study, non-clinical volunteers completed measure psychopathy, were then brought in an experimental situation (a puzzle task) which they could opt lie potential personal gain (i.e. monetary reward). Findings suggest that 1...