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A human-built system with complex behavior is often organized as a hierarchy. For example, a command hierarchy has among its notable features the organizational chart of superiors, subordinates, and lines of organizational communication. Hierarchical control systems are organized similarly to divide the decision making responsibility.
Use interim controls: If more time is needed to implement long-term solutions, the hierarchy of controls should be used from the top down as interim controls in the meantime. Avoid introducing new hazards: Keep in mind is that the selected controls should never directly or indirectly introduce new hazards.
The network will have a hierarchy of main and sub-control stations with varying degrees of access. The network can be designed such that the controls for this system can be on an established timeline, or controlled in real time by astronomical clocks, audio/motion/IR sensors, or various means of user interface (buttons, touch-pads, consoles).
A process flow diagram describing the construction of a structure chart by a so-called Subject Matter Experts (SME). [2]According to Wolber (2009), "a structure chart can be developed starting with the creating of a structure, which places the root of an upside-down tree which forms the structure chart.
PERA Reference model: Decision-making and control hierarchy, 1992. Purdue Enterprise Reference Architecture (PERA), or the Purdue model, is a 1990s reference model for enterprise architecture, developed by Theodore J. Williams and members of the Industry-Purdue University Consortium for Computer Integrated Manufacturing.
Image credits: thewifeaquatic1 #2 I Found Millie Next To A Dead Dog And A Smashed Dog Crate And Now Look At Her
Global efforts to address climate change will be dealt a severe blow if U.S. President-elect Donald Trump again pulls the country out of the Paris Agreement, the EU's head of climate change policy ...
Natural gas futures surged 24% with a cold spell expected across the eastern half of the US. Forecasts call for below-average temperatures on the East Coast and parts of the Midwest for January.