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Full-Text Articles in Mechanical Engineering
Diversified Users' Satisfaction With Advanced Mobile Phone Features, Chen Ling, Wonil Hwang, Gavriel Salvendy
Diversified Users' Satisfaction With Advanced Mobile Phone Features, Chen Ling, Wonil Hwang, Gavriel Salvendy
Dr. Chen Ling
Mobile phones are widely used all over the world, and with their increasing number of value-added features, they are becoming far more than a mere mobile voice communication device. Rather, they provide a powerful platform for accessing information universally. This paper reports a study which scrutinized users’ preference levels with five new mobile phone design features facilitating universal information access through mobile phones: camera, colour screen, voice-activated dialing, Internet browsing, and wireless connectivity (e.g. Bluetooth, infrared, etc.). The survey study involved college students and investigated the degree to which each of the above features impacts the users’ overall satisfaction and …
Validating Information Complexity Questionnaires Using Travel Web Sites, Chen Ling, Miguel Lopez, Jing Xing
Validating Information Complexity Questionnaires Using Travel Web Sites, Chen Ling, Miguel Lopez, Jing Xing
Dr. Chen Ling
With the prevalent use of visual interfaces and the increasing demand to display more information, information complexity becomes a major concern for designers. Complex interfaces affect the system effectiveness, efficiency, and even safety. Researchers at the Federal Aviation Administration have developed two sets of psychometric questionnaires to evaluate information complexity of air traffic control displays. This study adapted the questionnaires for commercial visual interfaces and validated them with directed and exploratory tasks on three travel websites. The results confirmed that both complexity questionnaires have satisfactory reliability, validity, and sensitivity. But questionnaire B demonstrated higher sensitivity than Questionnaire A.
A Comparison Between Single And Dual Monitor Productivity And The Effects Of Window Management Styles On Performance, Alex Stegman, Chen Ling, Randa Shehab
A Comparison Between Single And Dual Monitor Productivity And The Effects Of Window Management Styles On Performance, Alex Stegman, Chen Ling, Randa Shehab
Dr. Chen Ling
Several research studies have been published on user opinion and productivity of using dual monitor systems. These studies found that users typically enjoy using multiple monitors, but none found a strong increase in performance and productivity. Other researchers have focused on improving multiple monitor usability, but often without any statistical framework. This study compared single and dual monitor productivity measures: task time, cursor movement, and number of window switches. Additionally, window management styles (WMS) were studied in order to help designers understand user behavior better. WMS were broken into two categories, toggler and resizer, and then compared to the WMS …
Effect Of Aircraft Datablock Complexity And Exposure Time On Performance Of Change Detection Task, Chen Ling, Lesheng Hua
Effect Of Aircraft Datablock Complexity And Exposure Time On Performance Of Change Detection Task, Chen Ling, Lesheng Hua
Dr. Chen Ling
Air traffic controllers constantly perform tasks of monitoring traffic situation and searching for conflict between aircrafts. One requirement for these tasks is being able to detect any changes in the aircraft status presented by aircraft datablock. In this study, we investigated the effects of aircraft datablock complexity and exposure time on the change detection task performance. Two types of datablock, six field datablock (6F-DB) and nine field datablock (9F-DB), were artificially designed. Ten participants learned the change detection taskwith aircraft datablocks for four days. Our results showed that datablock complexity and exposure time in the change detection task had direct …
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 …
Users' Attitude And Strategies In Information Management With Multiple Computers, Guangfeng Song, Chen Ling
Users' Attitude And Strategies In Information Management With Multiple Computers, Guangfeng Song, Chen Ling
Dr. Chen Ling
This article reports the result of a survey study on how users utilize multiple computers in personal information management tasks. Two hundred ninety-five experienced computer users answered questions regarding the selective use of computers in three usage scenarios in managing multiple types of information: files, bookmarks, and e-mails. Results showed that users pursue simple computing environment by simplifying multiple computer configurations, avoiding distribution of information among multiple computers, and avoiding conceptual distinction of multiple computers. Selective use of a computer was based on the characteristics of the computers and the tasks to be performed. Information retrieval was still primarily done …