Number of co-authors:13
Number of publications with 3 favourite co-authors:Ram R. Bishu:8David J. Cochran:5Raymond A. Carpenter:2
Michael W. Riley's 3 most productive colleagues in number of publications:Ram R. Bishu:21Joseph H. Goldberg:19David J. Cochran:9
Civilization advances by extending the number of important operations which we can perform without thinking of them.
-- Alfred North Whitehead
Read the fascinating history of Wearable Computing, told by its father, Steve Mann
Read Steve's chapter !
Michael W. Riley
Publications by Michael W. Riley (bibliography)
Moore, Benny J., Solipuram, Sudheer R. and Riley, Michael W. (1995): The Effects of Latex Examination Gloves on Hand Function: A Pilot Study. In: Proceedings of the Human Factors and Ergonomics Society 39th Annual Meeting 1995. pp. 582-585.
Over the last decade the use of latex examination gloves by dental professionals has increased significantly. The proliferation in latex glove use is primarily due to recommendations and guidelines established by both the Centers for Disease Control and the Occupational Safety and Health Administration. Because a significant number of dental professionals are wearing latex examination gloves, it is important to understand the limitations and restrictions associated with wearing these gloves. This study investigated the effects of hand condition on three-jaw chuck pinch strength, power grip strength and manual dexterity. Hand condition consisted of three levels: (1) bare hand, (2) hand with a normal sized latex examination glove and (3) hand with a tight fitting latex examination glove. The results of the study indicated that latex examination gloves do not have an effect on three-jaw chuck pinch strength or power grip strength. However the study suggested that ill-fitting latex examination gloves significantly reduce manual dexterity.
© All rights reserved Moore et al. and/or Human Factors Society
Kamal, Abdul H. and Riley, Michael W. (1995): Median Nerve Latencies of Dental Hygienists and Wrist Size. In: Proceedings of the Human Factors and Ergonomics Society 39th Annual Meeting 1995. p. 959.
Dental hygienists who are licensed to practice in Southeastern Nebraska were solicited by mail and telephone to participate in a comprehensive study aimed at assessing the prevalence rate of upper extremity neuropathies in dental hygienists. The study involved, in part, nerve conduction testing and wrist measurements. Conflicting reports were found in the literature linking wrist size to elevated median nerve motor or sensory latencies which are typically indicative of upper extremity neuropathies including carpal tunnel syndrome. Sixty-four practicing dental hygienists had bilateral nerve conduction tests. Wrist thickness and wrist depth at both the distal and proximal wrist creases were measured. Wrist ratios (depth to thickness) for the dominant and nondominant hand at the proximal and distal wrist creases were determined. The wrist ratios were not statistically significantly different due to measurement site, hand dominance, subject reported hand/arm numbness, tingling, pain or motor impairment, or measured median nerve motor or sensory nerve latencies. Wrist ratios could not be used to predict subject reported symptoms of upper extremity neuropathies or electro-diagnosed upper extremity neuropathies.
© All rights reserved Kamal and Riley and/or Human Factors Society
Zhan, Ping, Bishu, Ram R. and Riley, Michael W. (1993): Screen Layout and Semantic Structure in Iconic Menu Design. In: Proceedings of the Fifth International Conference on Human-Computer Interaction 1993. pp. 146-151.
Past research on menu interfaces has been mostly concerned with textual menus. This paper is intended to address typical issues in iconic menu design, such as screen layout and semantic structure of multiple level iconic menus. Two types of iconic menu screen layouts were studied: circular and rectangular screen layouts. The semantic structures of these menus were characterized by: 2 menu sizes x 2 directions x 2 levels of depth. The design of the menus was based on existing iconic menus. In testing, subjects studied a target icon, searched for a "matching" icon by navigating through the menu structure, and finally selected the matching icon at the lowest level of the menu. Study time, response time, and error rate were used to measure user performance. Results indicate that screen layout and semantic structure of iconic menus significantly affect user performance, in a way that is similar to textual menus. With the same screen space, circular screen layout was superior to rectangular screen layout. It is suggested that iconic menu designers should probably consider to use results obtained from textual menus as references, with care taken for the differences between textual and iconic menus. Further studies need to investigate these differences before making any sound conclusions.
© All rights reserved Zhan et al. and/or Elsevier Science
Zhan, Ping, Bishu, Ram R. and Riley, Michael W. (1993): The Learning Curves in Multiple Level Iconic Menu Navigation. In: Proceedings of the Fifth International Conference on Human-Computer Interaction - Poster Sessions: Abridged Proceedings 1993. p. 139.
Goldberg, Joseph H., Champney, Paul C., Karn, Keith S., Riley, Michael W. and Peacock, Brian (1992): First Course in Human Factors Engineering: What Should be Taught?. In: Proceedings of the Human Factors Society 36th Annual Meeting 1992. pp. 561-562.
Industry and academia often have differing desires in the introductory Human Factors education of engineering students. Industry seeks solutions to current problems, whereas academia can communicate state-of-the-art concepts without immediate application. This panel session united members of academia and industry for discussion of what topics and structure should underlie a one-semester, introductory, survey course in Human Factors Engineering. Each panel member expressed his opinion of what should be in such a course, followed by discussion aimed at achieving consensus of opinions.
© All rights reserved Goldberg et al. and/or Human Factors Society
Carpenter, Raymond A., Bishu, Ram R. and Riley, Michael W. (1990): User Characteristics: Are Personality Types and Psychometric Factors Good Predictors?. In: D., Woods, and E., Roth, (eds.) Proceedings of the Human Factors Society 34th Annual Meeting 1990, Santa Monica, USA. pp. 351-355.
The objective of this investigation was to experimentally evaluate possible relationships among personality types, selected psychometric factors, and categories of cognitive activity, with an intent to develop user behavioral models for interface design. Twenty subjects (10 novice and 10 experienced) participated in an interactive scheduling task with two levels of task complexity. The task involved navigation through ten action alternatives, with each alternative being represented by a screen, to allocate resources. The subjects were administered with Myers-Briggs Type Indicator (MBTI) tests and a battery of psychometric tests. Cognitive time, total number of menu selections, total number of assignments, and the distribution of cognitive time into intelligence, design and choice activities were the performance measures. Variables derived from measurements of personality traits and psychometric factors were evaluated as predictive measures of performance. The personality trait for sensing/knowing was significant in predicting overall performance, as were psychometric factors for induction, integrative processing, and spatial scanning. The personality trait of extrovert/introvert was found to be significant in predicting the distribution of screen use times, as were derived factors for locus of control, memory ability, and personality. These results can form the basis for examining the usefulness of personality types and psychometric factors as variables in models of user characteristics.
© All rights reserved Carpenter et al. and/or Human Factors Society
Chen, Yuxiang, Cochran, David J., Bishu, Ram R. and Riley, Michael W. (1989): Glove Size and Material Effects on Task Performance. In: Proceedings of the Human Factors Society 33rd Annual Meeting 1989. pp. 708-712.
Two experiments were conducted to measure the effect of glove size and material on task performance. The first experiment tested the glove size and material effects on a maximum torque exertion task while the second experiment tested the glove size and material effect on a small parts assembly task. The results of the first experiment showed that for the maximum exertion task, the glove size had no significant effect while the glove material did have a significant effect. For the assembly task the results indicated that glove size and material combination may be important to performance.
© All rights reserved Chen et al. and/or Human Factors Society
Bishu, Ram R., Carpenter, Raymond A., Riley, Michael W. and Cochran, David J. (1989): Rule Identification in Knowledge Engineering: A Study of an Interactive Resource Allocation Task. In: Proceedings of the Third International Conference on Human-Computer Interaction 1989. pp. 775-782.
Identification of rules has been recognized as an important human factors issue in knowledge engineering. The intent of this research was to determine if solution patterns could be identified in an interactive and decision making task and if a metric could be designed linking subjects to their respective solution patterns. Twenty subjects (10 experts and 10 novices) participated in an experiment involving an interactive resource scheduling task. Two levels of task complexity were used and the task involved navigating through a set of action alternatives, each of which was presented as a separate screen. A set of measures were used to measure the solution patterns. Results show a large range in the number of transitions among subjects and a variety of distributions of the transitions. Task level appears to have a dominant effect on the solution strategy. The merits of pattern score, as a metric for measuring solution patterns is discussed.
© All rights reserved Bishu et al. and/or Lawrence Erlbaum Associates
Riley, Michael W., Cochran, David J. and Bishu, Ram R. (1987): Unreasonably Dangerous. In: Proceedings of the Human Factors Society 31st Annual Meeting 1987. pp. 600-604.
Human factors specialists need to assess products and situations to determine a level of dangerousness. This paper outlines the factors of such an analysis and suggests a procedure to use. Aspects of human behavior, environmental conditions, potential for encountering sources of energy and good manufacturing practices are addressed. The key elements of human capability and expectation are outlined. Products and activities that have inherent danger are discussed. Human errors and the factors influencing dangerous situations are discussed.
© All rights reserved Riley et al. and/or Human Factors Society
Cochran, David J., Bishu, Ram R. and Riley, Michael W. (1987): The Effects of Gloves on Maximum Holding Time. In: Proceedings of the Human Factors Society 31st Annual Meeting 1987. pp. 894-897.
Considerable work is now done while wearing gloves on tasks that require that considerable grip forces be exerted and maintained for extended times. The primary objective of this research was to evaluate the effects of two common working gloves on the time a person can exert a constant grip force as a function of that person's maximum grip force. A simple endurance experiment was conducted to verify that the same relationship between holding time and grip force (as a percentage of maximum grip force under the same conditions) is valid for grip with gloves as is present in other muscular exertions. Subjects were first evaluated for maximum grip force on a standard hand dynamometer with bare hands and while wearing each of the gloves. They then participated in trials to evaluate grip endurance at 20, 40, 60, 80, and 100% of the maximum grip for each condition (bare hand, a leather glove, and a cotton glove). Analysis of variance was used to evaluate the data gathered to determine if the holding time differed for bare hand or glove conditions. This analysis showed no differences between the conditions. This study shows that the effect of a glove on endurance can be predicted by the effect of that glove on the maximum grip force that can be exerted. This will be of value to those persons who design or evaluate work tasks where gloves are required.
© All rights reserved Cochran et al. and/or Human Factors Society
Bishu, Ram R., Batra, Sanjay, Cochran, David J. and Riley, Michael W. (1987): Glove Effect on Strength: An Investigation of Glove Attributes. In: Proceedings of the Human Factors Society 31st Annual Meeting 1987. pp. 901-905.
A number of human performance capabilities are compromised with gloves. Explanations for the strength decrements with gloves have ranged from lack of tactile feedback when wearing gloves, to improper fit, to individual and task differences. An attempt has been made in this investigation to develop a predictive relationship between strength decrements and glove characteristics. Fifteen subjects participated in an experiment involving a grip and a grasp task with three gloves and a bare handed condition. Tenacity, snugness, suppleness and the material thickness were objectively measured as glove attributes. Significant Task and Glove effects were found. Results suggest that the glove size may not matter much in performance whereas resistance to sliding is an important performance determinant when using gloves. The results suggest that the strength decrements are complex functions of a number of glove attributes.
© All rights reserved Bishu et al. and/or Human Factors Society
Show this list on your homepage
Join the technology elite and advance:
Changes to this page (author)26 Feb 2010: Modified29 Jun 2007: Added
28 Jun 2007: Added
28 Jun 2007: Added
27 Jun 2007: Added
27 Jun 2007: Added
26 Jun 2007: Added
26 Jun 2007: Added
26 Jun 2007: Added
25 Jun 2007: Added
25 Jun 2007: Added
25 Jun 2007: Added
Page maintainer: The Editorial Team