Analysis of the Human Performance and Communication Effects on the Operator Tasks of Military Robot Vehicles by Using Extended Petri Nets

2017 ◽  
Vol 22 (2) ◽  
pp. 162-171
Author(s):  
SangYeong Choi ◽  
Ji Hyeon Yang
Keyword(s):  
Petri Nets ◽  
Human Performance ◽  
Communication Effects ◽  
Extended Petri Nets ◽  
Operator Tasks

scholarly journals Multi-Event Modeling and Recognition Using Extended Petri Nets

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 37879-37890
Author(s):  
Ji Qiu ◽  
Lide Wang ◽  
Yin Wang ◽  
Yu Hen Hu
Keyword(s):  
Petri Nets ◽  
Event Modeling ◽  
Extended Petri Nets

Workload Thresholds for Human Performance Models

2017 ◽  
Vol 61 (1) ◽  
pp. 781-785
Author(s):  
Dick Steinberg ◽  
Dan Donohoo ◽  
Laura Strater ◽  
Alice Diggs
Keyword(s):  
Human Performance ◽  
Food Service ◽  
Design Decisions ◽  
Service Workers ◽  
Loss Of Life ◽  
Maximum Time ◽  
Operator Tasks ◽  
Food Service Workers ◽  
The Times

Human performance modeling (HPM) can be an effective tool to use for determining crew designs. Crew design includes determining the number of operators needed, the role of automation, and member task responsibilities required to operate a system. Without effective measures of performance and thresholds for assessing success, design decisions from HPM will be erroneous. Operator tasks can be assigned and allocated to crew members in a simulation to estimate the workload for each operator during a period of performance. The methods for determining when an operator exceeds workload thresholds create challenges for those using HPM for crew design. Some types of analysis have more clearly defined thresholds. For example, if a military operator has too many tasks to complete to effectively initiate countermeasures between the times they receive a warning until the time the threat arrives, they are overloaded and cannot complete their mission. However, many missions do not have such a severe penalty for not completing the tasks within a given time. For example, pharmacists, satellite managers, traffic managers, food service workers do not have such stringent task timing completion thresholds. For example, the penalty for a food service provider to be overloaded is typically extended wait times rather than risk of a loss of life. For these types of operational situations, determining overload is much more challenging. This paper describes a new workload thresholds for operator workflow models. It incorporates the vigilance effort, the maximum time a crew member will be fully loaded, and determining the maximum time worked without a break.

Extremely Fast Heuristic Event-Driven Job Shop Scheduler With a New Class of Extended Petri Nets

2021 ◽  
pp. 512-539
Author(s):  
Alexander Kostin
Keyword(s):  
Petri Nets ◽  
Petri Net ◽  
Dynamic Models ◽  
Job Shop ◽  
Scheduling System ◽  
New Class ◽  
Extended Petri Nets ◽  
Close Cooperation ◽  
Single Processor ◽  
Unique Mechanism

A very fast scheduling system is proposed and experimentally investigated. The system consists of a job shop manager and dynamic models of machines. A schedule is created in the course of a close cooperation with models of the machines that generate driving events for the scheduler. The system is implemented with a new class of extended Petri nets and runs in the environment of the Petri-net tool WINSIM. The scheduler creates a schedule sequentially, without any form of enumerative search. To investigate the scheduler performance, a large number of experiments were conducted with the use of few strategies. Due to a unique mechanism of monitoring of triggering events in the Petri net, the developed scheduler runs at least hundreds of times faster than any known single-processor job shop scheduler.

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