Development of an ecological interfacedesign (EID) for addressing social problem of gambling is presented. Although physiology of gambling addiction cannot be influenced by EID but it is a promising step in improving...
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Development of an ecological interfacedesign (EID) for addressing social problem of gambling is presented. Although physiology of gambling addiction cannot be influenced by EID but it is a promising step in improving decision making processess of gamblers. Different project visualizations and evaluation of the design are also presented.
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.
Although advances in computing power have greatly improved computer chess playing, human chess players still rival their computer counter-parts. Computer algorithms typically use a strategy of exhaustive search, which...
Although advances in computing power have greatly improved computer chess playing, human chess players still rival their computer counter-parts. Computer algorithms typically use a strategy of exhaustive search, which is unlikely to be used by human players. We hypothesized that human chess players recognize higher order properties of the game and use these properties to limit their need for exhaustive move searching. We used graph theoretic modeling to quantitatively determine three possible higher order properties. We then conducted an experiment by using the higher order properties to preselect moves for a typical exhaustive search chess engine. We played the enhanced chess engine against its unenhanced version in six games. The enhanced version won all six games, regardless of color played, suggesting that pre-selection of moves based on higher order properties of the game is indeed a viable strategy.
In designing large ecological displays, designers are faced with the question of how to display multiple levels of abstract information. Previous research has shown that people may perform better, in terms of diagnosi...
In designing large ecological displays, designers are faced with the question of how to display multiple levels of abstract information. Previous research has shown that people may perform better, in terms of diagnosis speed and accuracy, if multiple levels of information are presented in an integrated format (Burns, 2000). We repeated the study of Burns (2000) which looks at providing abstract information in three formats - one level at a time, windowed and integrated. We collected eye tracking data at intervals throughout the experiment. Our eye-tracker was able to collect pupil diameter measures and changes. Results showed no notable difference in pupil diameter measures between the integrated condition and the one level at a time condition, but notably higher increases in pupil diameter when abstract information was in separate windows. Furthermore, pupil diameters increased over time in the windowed condition, suggesting that workload with this display may have been increasing. These preliminary data suggest that separating levels of abstract information may increase the mental workload of operators.
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.
We propose a new shape-based, query-by-example, image database retrieval method that is able to match a query image to one of the images in the database, based on a whole or partial match. The proposed method has two ...
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In this paper, a new graph data structure for 2-D shape representation is proposed. The new structure is called a concavity graph, and is an evolution from the already known "concavity tree". Even though a c...
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In this paper, a new graph data structure for 2-D shape representation is proposed. The new structure is called a concavity graph, and is an evolution from the already known "concavity tree". Even though a concavity graph bears a fundamental resemblance to a concavity tree, the former is able to describe the shape of multiple objects in an image and their spatial configuration, and is hence inherently more complex. The aim of concavity graphs is two-fold: first we want to analyze the patterns in a multi-object image in a way that will (1) provide better representation of their shapes, and (2) convey useful information about how they "interact" together. Second, we want our analysis technique to facilitate similarity matching between two images. This paper introduces the new structure and outlines how it can be used for shape representation as well as similarity matching.
In this paper we combine a novel set of image features called virtual circles with edge direction, to provide an efficient alignment algorithm for image registration under similarity transformations. Virtual circles c...
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In this paper we combine a novel set of image features called virtual circles with edge direction, to provide an efficient alignment algorithm for image registration under similarity transformations. Virtual circles can be extracted efficiently from many types of images with the help of the distance transform. They can also have extra information, such as their radius and the dominant edge direction in the neighborhood, which can be used for efficient registration. An heuristic called the smoothness criterion is used to choose virtual circles which are less likely to be corrupted by background noise, and to increases the efficiency of the algorithm. Experimental results have shown that this method is highly automatic and has linear complexity in terms of the number of virtual circles extracted.
Image quality evaluation by human observers is heavily subjective in nature. Individual observers judge the image quality differently. In previous works, an observer-dependent system for subjective image enhancement, ...
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Image quality evaluation by human observers is heavily subjective in nature. Individual observers judge the image quality differently. In previous works, an observer-dependent system for subjective image enhancement, which is based on fusion of different algorithms, was introduced. In this paper, the system configuration for sharpness/smoothness is discussed and experimental results are provided.
In this paper, a new graph data structure for 2-D shape representation is proposed. The new structure is called a concavity graph, and is an evolution from the already known "concavity tree". Even though a c...
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