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Articles 1 - 3 of 3
Full-Text Articles in Computer and Systems Architecture
Effect Of Glance Duration On Perceived Complexity And Segmentation Of User Interfaces, Yifei Dong, Chen Ling, Lesheng Hua
Effect Of Glance Duration On Perceived Complexity And Segmentation Of User Interfaces, Yifei Dong, Chen Ling, Lesheng Hua
Dr. Chen Ling
Computer users who handle complex tasks like air traffic control (ATC) need to quickly detect updated information from multiple displays of graphical user interface. The objectives of this study are to investigate how much computer users can segment GUI display into distinctive objects within very short glances and whether human perceives complexity differently after different durations of exposure. Subjects in this empirical study were presented with 20 screenshots of web pages and software interfaces for different short durations (100ms, 500ms, 1000ms) and were asked to recall the visual objects and rate the complexity of the images. The results indicate that …
Precis: A Usercentric Word-Length Optimization Tool, Mark Chang, Scott Hauck
Precis: A Usercentric Word-Length Optimization Tool, Mark Chang, Scott Hauck
Mark L. Chang
Translating an algorithm designed for a general-purpose processor into an algorithm optimized for custom logic requires extensive knowledge of the algorithm and the target hardware. Precis lets designers analyze the precision requirements of algorithms specified in Matlab. The design time tool combines simulation, user input, and program analysis to help designers focus their manual precision optimization efforts.
System Dynamics Implementation Of An Extended Brander And Taylor-Like Easter Island Model, Takuro Uehara, Yoko Nagase, Wayne W. Wakeland
System Dynamics Implementation Of An Extended Brander And Taylor-Like Easter Island Model, Takuro Uehara, Yoko Nagase, Wayne W. Wakeland
Wayne W. Wakeland
We provide a system dynamics implementation of a dynamic ecological economics model. Dynamic economic models are often constrained to use functions, such as the Cobb-Douglas function, chosen “conveniently” to allow for analytic solutions. The C-D function, however, suffers from its fixed elasticity that does not allow for the substitutability between man-made capital and natural capital to change, which is vital for economic sustainability. Using system dynamics removes this constraint and enables more realistic ecological economics models containing functions not amenable to analytic solution. The base model is the natural resource and population growth model developed by Brander and Taylor (1998) …