This paper applies Work Domain Analysis (WDA) to the aviation domain. We developed a two-dimensional work domain model of the Harvard aircraft as the primary phase of our Ecological interfacedesign (EID) process. In ...
This paper applies Work Domain Analysis (WDA) to the aviation domain. We developed a two-dimensional work domain model of the Harvard aircraft as the primary phase of our Ecological interfacedesign (EID) process. In contrast to previous work, we modelled the entire aircraft as the work domain. The work domain analysis was followed by an instrumentation availability analysis. We developed a model for the variables derived from the WDA to classify the state of those variables according to their availability and measurement. We also have the opportunity, in our future work, to flight test the ecological displays, something that has not occurred before.
We studied the impact of Ecological interfacedesign (EID) displays on mental models using the DURESS II simulator. To assess mental models we used a card sorting exercise, a network building exercise based on the Abs...
We studied the impact of Ecological interfacedesign (EID) displays on mental models using the DURESS II simulator. To assess mental models we used a card sorting exercise, a network building exercise based on the Abstraction Hierarchy, and a system behavior prediction exercise. Participants in the EID condition performed significantly better on the card sorting and network building exercises, but poorer on the prediction exercise. Our results are mixed, suggesting that EID may improve the understanding of means- end links and yet, not improve the ability to predict system behavior. The relatively limited experience of participants with the interface as well as our selection of knowledge elicitation techniques may have influenced these results. More research is needed to fully evaluate the impact of EID on mental models.
This paper describes Work Domain Analysis (WDA) applied to the domain of automated midair collision detection and avoidance as a first step in the design of improved ecological interfaces for automated traffic alertin...
This paper describes Work Domain Analysis (WDA) applied to the domain of automated midair collision detection and avoidance as a first step in the design of improved ecological interfaces for automated traffic alerting displays. Three abstraction hierarchies (AH) modelling the aircraft, collision environment, and a traffic alerting system are presented, and the challenges of adapting the AH to enhanced displays will be examined. It will be shown that WDA is a feasible framework for establishing information requirements of flight and automated collision dynamics. Ecological interfacedesign (EID) can then be applied to develop displays that invoke a greater trust in the automation.
This study explored how to inform the design of information systems for medication therapy management, in the context of the southwestern Ontario health system. The data collection comprised document analysis, intervi...
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This paper introduces a methodology for integrating Cognitive engineering into information System Analysis and design (SAD). Work Domain Analysis (WDA) in CE is used to analyze and capture a large amount data and comp...
This paper introduces a methodology for integrating Cognitive engineering into information System Analysis and design (SAD). Work Domain Analysis (WDA) in CE is used to analyze and capture a large amount data and complex relationships in a work domain. In SAD, Data Flow Diagrams (DFD) and Entity-Relationship (ER) approaches are two important tools. Based on the captured data and relationships in the WDA model, DFD method is employed to further analyze data, data processing, and their relationships from the point of data flow. On the basis of creating WDA and DFD models, Entity-Relationship analysis methods uses normalization principles to optimize table structures, create the relationships among tables, and finally to create an Entity-Relationship Diagram. By applying the integrated methodology to the SAD of a database for health information, we created a system structure diagram, a work domain model, a DFD model, and an ER model. The methodology should emphasize human factors in Information System development, enhance the reliability of SAD and database integrity, and reduce system development time. The database is based on a three-tiered client/server system architecture and running on Oracle9i.
A limitation of Optical Coherence Tomography (OCT) image segmentation is the poor signal-to-noise ratio of the imaging process, particularly because images are sampled quickly, at high resolutions, and in-vivo. Furthe...
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In order to extract accurate 3D models from uncalibrated image data it is necessary to upgrade the generated projective reconstructions to a metric space, a process known as auto calibration. The key challenge associa...
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Computer networks are pervasive and critical to the operation of today's businesses. While most of us take computer networks for granted, network managers who must configure, operate, and fix faults in computer ne...
Computer networks are pervasive and critical to the operation of today's businesses. While most of us take computer networks for granted, network managers who must configure, operate, and fix faults in computer networks face a daunting task that becomes more complex everyday. Ecological interfacedesign has been shown to be a promising approach for complex systems such as power plants or petrochemical systems. Computer networks are a very different work domain characterized by rapid technological change, extreme decentralization, and the existence of “soft” components. This paper presents the first work domain analysis of this new domain creating an abstraction hierarchy for general signal transfer systems and general computing networks. It shows how the abstraction hierarchy can be applied to this new domain and presents the initial work on an ecological interfacedesign for network management.
Data quality is an important and costly topic in modern society, and data quality and contextual data quality are important components of the human-computer relationship. As a long-term design imperative, the user int...
Data quality is an important and costly topic in modern society, and data quality and contextual data quality are important components of the human-computer relationship. As a long-term design imperative, the user interface needs to be improved to support better data quality. To design for better data quality, this exploratory study characterizes physicians’ opinions on their own data and the data produced by their colleagues. Through a regional survey and semi-structured interviews, the issue of data style and medical record personality was a dominant theme. A record’s personality impacts an individual user’s willingness to accept the data it contains. Future work will incorporate these results into modeling the data quality problem with cognitive work analysis, and will explore design elements to support the design for better data quality.
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