The Effects Of Object Weight And Three Dimensional Movement On Human Movement Time And Fitts Law PDF Download

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The Effects of Object Weight and Three-dimensional Movement on Human Movement Time and Fitts' Law

The Effects of Object Weight and Three-dimensional Movement on Human Movement Time and Fitts' Law
Author: Kyle T. Hagadorn
Publisher:
Total Pages: 138
Release: 2004
Genre: Human engineering
ISBN:
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"The speed and accuracy of movement depend on several factors that have been previously identified including target size and movement amplitude. According to Fitts' Law these variables comprise an Index of Difficulty that is directly relate to the movement time. This principle of human performance has been studied extensively over a wide array of settings and contexts. The objective of this thesis was to investigate human movement time for tasks requiring precision placement of weighted objects, a task frequently encountered in industrial and occupational settings. Specifically, this thesis evaluated the effects of object weight, complexity of movement, and handedness on movement time. Complex movement in three dimensions and use of the dominant hand was found to significantly decrease movement time. It was also found that as probe weight increased, movement time increased in a logarithmic pattern. Fitts' Law in its original form was found to be an accurate predictor of overall movement time for the data obtained in this study. However, Fitts' original equations were improved by incorporating a term that accounted for the weight of the probe. The theoretical and practical implications of these results are discussed"--Abstract.

Three-dimensional Analysis of Human Movement

Three-dimensional Analysis of Human Movement
Author: Paul Allard
Publisher: Champaign, IL : Human Kinetics
Total Pages: 392
Release: 1995
Genre: Education
ISBN:
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Researchers, graduate students, and practitioners alike will benefit from this state-of-the-art reference. It's the first book to explain in a single volume the essential components of three-dimensional analysis of human movement. Readers will gain a fundamental understanding of methods and technology used to capture, reconstruct, and process 3-D data; concepts and techniques of mechanical and neuromuscular modeling, including robotics; and the application of 3-D analysis. The editors have brought together contributions from international experts to create a technical manual that demonstrates the possibilities and potential pitfalls of 3-D analysis of human movement. More than 140 tables, diagrams, and photos throughout the book illustrate essential content.

Extension of Fitts' Law in Three-dimensional Space with Coordinated Hand Mnovements

Extension of Fitts' Law in Three-dimensional Space with Coordinated Hand Mnovements
Author: Xiaolu Zeng
Publisher:
Total Pages: 124
Release: 2012
Genre:
ISBN:
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Fitts' Law is a powerful model of human movements that predicts the time that it takes to move to targets of different widths and at different distances. It has been widely used in the field of human-computer interaction and in the design of the Graphical User Interface (GUI), and it is often a measure of the ergonomic acceptability of a cursor-positioning device. When first proposed in 1954 it was applied to one-dimensional (1D) and twodimensional (2D) pointing tasks. Since that time numerous researchers have verified and extended Fitts' law to include three-dimensional (3D) tasks. Various modifications have been proposed for a variety of situations. Factors that might have an effect on the model have also been studied. The extension of Fitts' law to 2D space has been well documented, however research on the extension to 3D space has been restricted due to limitations of input device designs. The recent development of 3D input devices, such as the Kinect system launched in 2010, allow accurate gesture recognition and 3D gesture control of a computer interface. This research was conducted to test the application of Fitts' law to coordinated hand movements in a 3D response space. A laboratory experiment was conducted in which 20 participants performed pointing tasks involving varying target distances, target sizes and approach angles using both Left Hand Move and Right Hand Click (LMRC) and Right Hand Move and Left Hand Click (RMLC). Quantitative measures of movement time and qualitative measures of fatigue etc. were gathered. Video recordings of the participants' movements from three directions were used to analyze posture. Results confirmed that Fitts' law applies to coordinated hand movements in 3D space. No significant gender difference was found for either the movement time or the response postures. Participants mainly reported that the tasks were fatiguing. The main limitation of this study was that the software used in the experiment caused noticeable cursor vibration. Software that can provide a more stable display might be an improvement. In the future, more appropriate gestures and tasks could be found for testing the usability of 3D gesture control of computer interfaces.

Human Factors Engineering and Ergonomics

Human Factors Engineering and Ergonomics
Author: Stephen J. Guastello
Publisher: CRC Press
Total Pages: 504
Release: 2013-12-19
Genre: Computers
ISBN: 1466560096
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Although still true to its original focus on the person–machine interface, the field of human factors psychology (ergonomics) has expanded to include stress research, accident analysis and prevention, and nonlinear dynamical systems theory (how systems change over time), human group dynamics, and environmental psychology. Reflecting new developments in the field, Human Factors Engineering and Ergonomics: A Systems Approach, Second Edition addresses a wide range of human factors and ergonomics principles found in conventional and twenty-first century technologies and environments. Based on the author’s thirty years of experience, the text emphasizes fundamental concepts, systems thinking, the changing nature of the person-machine interface, and the dynamics of systems as they change over time. See What’s New in the Second Edition: Developments in working memory, degrees of freedom in cognitive processes, subjective workload, decision-making, and situation awareness Updated information on cognitive workload and fatigue Additional principles for HFE, networks, multiple person-machine systems, and human-robot swarms Accident analysis and prevention includes resilience, new developments in safety climate, and an update to the inventory of accident prevention techniques and their relative effectiveness Problems in "big data" mining Psychomotor control and its relevance to human-robot systems Navigation in real-world environment Trust in automation and augmented cognition Computer technology permeates every aspect of the human–machine system, and has only become more ubiquitous since the previous edition. The systems are becoming more complex, so it should stand to reason that theories need to evolve to cope with the new sources of complexity. While many books cover traditional topics and theory, they to not focus on the practical problems students will face in the future. With broad coverage that ranges from physical ergonomics to cognitive aspects of human-machine interaction and includes dynamic approaches to system failure, this book increases the number of methods and analytical tools that are available for the human factors researcher.

Cumulated Index Medicus

Cumulated Index Medicus
Author:
Publisher:
Total Pages: 1840
Release: 2000
Genre: Medicine
ISBN:
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Mapping Human Sensory-Motor Skills for Manipulation onto the Design and Control of Robots

Mapping Human Sensory-Motor Skills for Manipulation onto the Design and Control of Robots
Author: Matteo Bianchi
Publisher: Frontiers Media SA
Total Pages: 134
Release: 2019-03-25
Genre:
ISBN: 2889457958
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Humans are endowed with extraordinary sensory-motor capabilities that enable a successful interaction with and exploration of the environment, as is the case of human manipulation. Understanding and modeling these capabilities represents an important topic not only for neuroscience but also for robotics in a mutual inspiration, both to inform the design and control of artificial systems and, at the same time, to increase knowledge on the biological side. Within this context, synergies -- i.e., goal-directed actions that constrain multi DOFs of the human body and can be defined at the kinematic, muscular, neural level -- have gained increasing attention as a general simplified approach to shape the development of simple and effective artificial devices. The execution of such purposeful sensory-motor primitives on the biological side leverages on the interplay of the sensory-motor control at central and peripheral level, and the interaction of the human body with the external world. This interaction is particularly important considering the new concept of robotic soft manipulation, i.e. soft, adaptable yet robust robotic hands that can deform with the external environment to multiply their grasping and manipulation capabilities. Under this regard, a preeminent role is reserved to touch, being that skin isour primary organ to shape our knowledge of the external world and, hence, to modify it, in interaction with the efferent parts. This Research Topic reports results on the mutual inspiration between neuroscience and robotics, and on how it is possible to translate neuroscientific findings on human manipulation into engineering guidelines for simplified systems able to take full advantage from the interaction and hence exploitation of environmental constraints for task accomplishment and knowledge acquisition.