We hypothesized that being promoted to a supervisory position leads to a reduction in subsequent absence spells and time lost in absences, and that the higher the supervisory level, the more pronounced its negative effect on subsequent absence behaviour. We tested our hypotheses by analysing the government records of 51,974 school teachers in the years 2000 and 2001. Controlling for potential c...

Recently, optical differential phase shift keying (DPSK) has attracted much interest in high-speed optical transmission systems. It features constant intensity and thus is less vulnerable to the fiber nonlinearities. In addition to high-speed data transmission, it is desirable to carry relatively low-speed supervisory information simultaneously to facilitate the system monitoring and network ma...

Abstract The U.S. financial markets faced an unprecedented rapid decline and recovery on May 6, 2010, known as the 6 flash crash. Roughly one trillion $ market value in less than thirty minutes vanished with biggest one-day point history of DJIA at time. Since events took place electronic markets, algorithmic trading high-frequency trading, parts FinTech, played significant roles, we handle cra...

This article presents an experiential group model of supervision constructed for both group and individual therapy presentations, emphasizing concepts from object relations theory and group-as-a-whole dynamics. It focuses on intrapsychic, interpersonal, and systems processes, and stresses the group aspect of the supervisory process. Its central thesis is that material presented in a group super...

We consider discrete-state plants represented by controlled Petri nets (CtlPN’s), where a subset of transitions can be prevented from firing by a supervisor. A transition in a CtlPN can fire at a marking if there are sufficient tokens in its input places and it is permitted to fire by the supervisor. A CtlPN is live if it is possible to fire any transition from every marking that is reachable u...

An elevator group supervisory controller is a control system that manages systematically two or more elevators in order to serve passengers as required. The elevator cars are assigned accordingly in response to hall calls, so as to optimize waiting time, riding time, power consumption, passengers’ comfort, etc. In this paper, the simplicity of ordinal structure fuzzy logic in making crucial sup...

A supervisory scheme is proposed that implements Stepwise Safe Switching Logic. The functionality of the supervisory scheme is organized in the following eight functional units: StepWise Safe Switching unit, Common controllers design unit, Experimentation unit, Simulation unit, Identification unit, Trajectory cruise unit, Operating points unit and Expert system unit. The supervisory scheme orch...

INTRODUCTION The paper presents three intervention studies designed to modify supervisory monitoring and rewarding of subordinates' safety performance. METHOD Line supervisors received weekly feedback concerning the frequency of their safety-oriented interactions with subordinates, and used this to self-monitor progress toward designated improvement goals. Managers higher up in the organizati...

An ecological analysis of the supervisory activity of 31 New Zealand school psychologists examined simultaneously the theories of school psychology, supervision practices, and the contextual qualities that mediated participants' supervisory actions. The findings indicated that the school psychologists worked to achieve the supervision goals of support, knowledge, and accountability through reci...

due to the changes which may occur in their parameters, systems are usually demonstrated by some subsystems for different conditions. this paper employs modified petri nets (mpn) to model theses subsystems and makes it simple to analyze them. in this method, first, the continuous transfer function is converted to a discrete transfer function and then, by mpn, system is modeled and analyzed. all...