Cognitive and functional (COLFUN) framework forenvisioning and assessing high-demand situations

The human role in complex task environments will more and more focus on handling non-routine situations with increasing information velocity and ubiquity. This paper presents a generic Cognitive and Functional (COLFUN) framework for envisioning and assessing such high-demand situations in order to realize an adequate human resource deployment....

Effects of head-slaved navigation and the use of teleports on spatial orientation in virtual environments

The type of navigation interface in a virtual environment (VE) - head slaved or indirect - determines whether or not proprioceptive feedback stimuli are present during movement. In addition, teleports can be used, which do not provide continuous movement but, rather, discontinuously displace the viewpoint over large distances. A two-part...

Cognitive task load and support on a ship's bridge: Design and evaluation of a prototype user interface

Recently, four cognitive support concepts were developed, that should help to handle high-y demand situations. These concepts are based on a cognitive task load model and can be realised with a specific method for cognitive task load analysis. The model and method describe task load in terms of three behavioural factors: the percentage time...

Navigation in Virtual Environments

Spatial orientation in a Virtual Environment (VE) depends on visual recognition and on path integration meaning that the traversed path is integrated from feedback stimuli (visual, vestibular, and kinesthetic). Which stimuli are available, depends on whether an immersive interface is used with head-slaved movement or a non-immersive interface is...

Function and Task analysis: Atomos IV, Work Package 2, Task 2.1.4 8 December 2000

Fault management in supervisory control: The effect of false alarms and support

Automation has changed the role of human operators from direct manual control to supervision. Their main task is to monitor whether system performance remains within pre-specified ranges and intervention is only required in unusual situations. One of the consequences is a loss of situation awareness, which significantly affects performance in...

Interface Concepts for Command & Control Tasks

This paper addresses new interface concepts for information visualisation and manipulation in Command and Control. These concepts focus on the use of multiple views on the tactical situation to enhance situational awareness and to improve situation assessment. Topics covered include the application of 3D perspective and stereoscopic displays.

The effect of a superimposed display on navigational performance

A simulator experiment was conducted to investigate the potential benefits of a maritime Superimposed Information Display (SID). Participants were requested to cross a traffic separation scheme with a high-speed vessel. Two display types were used: (i) standard Automatic Radar Plotting Aid (ARPA) navigation display information with advanced...

The effects of proprioceptive and visual feedback on geographical

To effectively use a Virtual Environment (VE) for applications such as training and design evaluation, a good sense of orientation is needed in the VE. "Natural" human geographical orientation, when moving around in the world, relies on visual as well as proprioceptive feedback. However, the present navigation metaphors that are used to move...

Situation awareness in process control; designing the human interface

Through the introduction of process automation, the supervision of multiple functions becomes more and more the role of a single human operator, the 'process manager', assisted by a process information and control system. Consequently, the level of direct involvement of the human operator with the actual process is decreasing, with possible...

Effect of path prediction on navigational performance

A simulator experiment was conducted to determine the potential benefits of path prediction on the navigational performance of channel-bound vessels. Channel pilots had to sail an approach channel under critical conditions in a deep-draught vessel. For the navigation task, basic radar information was used, supplemented by three different path...

The effect of path prediction on navigational performance during deep channel navigation

A simulator experiment was conducted to determine the potential benefits of path prediction on the navigation performance with channel-bound vessels. Six pilots had to sail an approach channel by a deep draught vessel under critical conditions. For navigation, a basic ARPA radar system was used, supplemented by three types of path predictors....

The effect of a priori probability and complexity on decision making in a supervisory control task

In the present study we investigated how monitoring and fault management in a ship control task are affected by complexity and a priori probability of disturbances. Partici-pants were required to supervise four independent shipping subsystems and to adjust the subsystems whenever deviations occurred. However, in order to apply the correct action...

De rol van de mens op de scheepsbrug van de toekomst [The human role on the future ship bridge]

The search for more efficient and safe ship operation has increased over the last decade. Extending automatic control cannot only reduce operational costs, but also provides the opportunity to modify the ship's bridge into an operational centre from which both navigational and platform functions can be fulfilled. As a result, the human task will...

An adaptive track predictor for ships; realization and results

An adaptive track predictor for ships