The Supervisory Control Theory is applied to a manufacturing cell commanded by a programmable logic controller (PLC). By means of local modular approach a methodology that exploits modularity of the plant and of the behavioral specifications models optimal supervisors are obtained without state-space explosion. For the purpose of simplifying the ladder diagram implementation in the PLC, reduced...

This paper presents an approach for reducing computational efforts in the synthesis of modular supervisors for discrete event systems. Most of large scale systems are represented by the composition of several smaller subsystems. To avoid the design on a single, often large plant, modular supervisors are synthesized on local models, which are constructed from those subsystems that are related to...

We examined the attitude and knowledge of 40 supervisors and trainees as well as the impact of workshops on statistical thinking and analytical processes in a medical facility in Pakistan: 45% thought that statistics and epidemiology should be left to professional statisticians; 86% of the trainees and 58% of the supervisors, however, thought that statistics should be taught as a full-time subj...

Supervision based on place invariants (SBPI) is an efficient technique for the supervisory control of Petri nets. In this paper we propose extensions of the SBPI to a decentralized control setting. In our setting, a decentralized supervisor consists of local supervisors, each controlling and observing a part of the Petri net. We consider both versions of decentralized control, with communicatio...

Thesis supervison can bring to light unresolved and new psychological issues for both supervisors and students. What makes thesis supervision especially difficult is that supervisors have no officiai mandate to deal with disruptive psychological processes. In fact, there are prohibitions against such interpersonal involvement. Those supervisors who move beyond the borders of traditional, ration...

Few studies have examined the practice wisdom of expert supervisors. This study addresses this gap by exploring how experienced supervisors manage difficulties in supervision in the context of the supervisory relationship. The supervisors were a purposive sample of 16 senior members of the profession with considerable expertise in supervision. In-depth interviews were first conducted with the s...

BACKGROUND Conservation of resources theory assumes loss of resources as a cause of job strain. In hospital work, conflicts with supervisors are tested to predict lower resources, that is, supervisory social support, participation possibilities, and appreciation. All three resources are expected to predict, in turn, experienced stress (job strain) and lower job satisfaction, lower affective com...

In primary prevention efforts to reduce the incidence of work-related musculoskeletal disease (MSD), many employers will use supervisor or worker assessments for initial evaluation of MSD risk factors. This cross-sectional study examined the ability of supervisors and workers to accurately assess the presence of MSD risk factors at four work sites in four different industries, examining five jo...

BACKGROUND We have performed this research to assess the effect of work-place based assessment (WBA) practice on medical students' learning approaches. METHODS The research was conducted at the King Saud bin Abdulaziz University for Health Sciences, College of Medicine from 1 March to 31 July 2012. We conducted a qualitative, phenomenological research utilizing semi-structured individual inte...