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Full-Text Articles in Mechanical Engineering

Diversified Users' Satisfaction With Advanced Mobile Phone Features, Chen Ling, Wonil Hwang, Gavriel Salvendy Apr 2015

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 ...


The Roles Of Profession And Gender In Some Pim Tasks, Guangfeng Song, Chen Ling Apr 2015

The Roles Of Profession And Gender In Some Pim Tasks, Guangfeng Song, Chen Ling

Dr. Chen Ling

In this paper, the roles of selected individual difference factors were examined in some personal information management (PIM) tasks. A questionnaire was completed by 295 participants regarding their personal characteristics, retrieval of previously saved information, and selective use of multiple computers. Clustering of individual difference factors suggested further analysis of profession and gender as classifiers. Profession seemed to modulate the behaviors and attitudes of users in these PIM tasks. And certain gender difference in PIM tasks could be explained by different expectations or standards.


Optimizing Heuristic Evaluation Process In E-Commerce: Use Of The Taguchi Method, Chen Ling, Gavriel Salvendy Apr 2015

Optimizing Heuristic Evaluation Process In E-Commerce: Use Of The Taguchi Method, Chen Ling, Gavriel Salvendy

Dr. Chen Ling

The heuristic evaluation method, a commonly used usability evaluation method, suffers from variability in evaluation results (Nielsen, 1993). Taguchi's quality-control method was applied to the heuristic evaluation process, and the robust condition of conducting heuristic evaluation that was insensitive to differences in an evaluator's cognitive styles was derived. Three control factors—task type, heuristic set, and evaluation mode—were used in the Taguchi analysis. The noise factor studied was the evaluator's cognitive style. The result of Taguchi analysis showed that if evaluators conducted the evaluations in pairs with the help of e-commerce-specific heuristics, the variability in the ...


Usability Evaluation Of A Paratransit Mobile Application, Elizabeth Argyle, Chen Ling, Randa Shehab Apr 2015

Usability Evaluation Of A Paratransit Mobile Application, Elizabeth Argyle, Chen Ling, Randa Shehab

Dr. Chen Ling

TransitMobile is a mobile application that provides logistic information to drivers in Oklahoma community-based paratransit operations. Passenger reservation information is transferred from the home agency to in-vehicle mobile devices to notify the drivers as reservations are made in real-time. In this study, user testing and a questionnaire were used to evaluate the usability of the application. Task completion times and subjective measures from the questionnaire pointed to areas of the system design that caused errors. The effects of practice revealed the importance of training for drivers in the field. While TransitMobile is a promising application, the system in which it ...


Prioritising Usability Considerations On B2c Websites, Chen Ling, Gavriel Salvendy Apr 2015

Prioritising Usability Considerations On B2c Websites, Chen Ling, Gavriel Salvendy

Dr. Chen Ling

Business-to-Consumer (B2C) websites are widely used nowadays. The success of B2C websites could be directly affected by their usability. A survey study was conducted to investigate and prioritize the importance of 19 usability considerations with respect to users’ purchase intentions on B2C websites. Responses from 287 web users were obtained and analyzed. Factor analysis reveals that users’ purchase intention on B2C websites is affected, in descending order of importance, by the following five usability factors: trustworthiness, shopping support, information access efficiency, ease of comprehension and hedonic quality. Some interesting differences among ethnic (American and Chinese), gender (men and women) and ...


Designing And Evaluating A Stem Teacher Learning Opportunity In The Research University, Patricia Hardré, Chen Ling, Randa Shehab, Jason Herron, Mark Nanny, Ulli Nollert, Hazem Refai, Christopher Ramseyer, Ebisa Wollega Apr 2015

Designing And Evaluating A Stem Teacher Learning Opportunity In The Research University, Patricia Hardré, Chen Ling, Randa Shehab, Jason Herron, Mark Nanny, Ulli Nollert, Hazem Refai, Christopher Ramseyer, Ebisa Wollega

Dr. Chen Ling

This study examines the design and evaluation strategies for a year-long teacher learning and development experience, including their effectiveness, efficiency and recommendations for strategic redesign. Design characteristics include programmatic features and outcomes: cognitive, affective and motivational processes; interpersonal and social development; and performance activities. Program participants were secondary math and science teachers, partnered with engineering faculty mentors, in a research university-based education and support program. Data from multiple sources demonstrated strengths and weaknesses in design of the program's learning environment, including: face-to-face and via digital tools; on-site and distance community interactions; and strategic evaluation tools and systems. Implications are ...


Validating Information Complexity Questionnaires Using Travel Web Sites, Chen Ling, Miguel Lopez, Jing Xing Apr 2015

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 Apr 2015

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 ...


Educational Apps: Using Mobile Applications To Enhance Student Learning Of Statistical Concepts, Chen Ling, Drew Harnish, Randa Shehab Apr 2015

Educational Apps: Using Mobile Applications To Enhance Student Learning Of Statistical Concepts, Chen Ling, Drew Harnish, Randa Shehab

Dr. Chen Ling

This research sought to understand whether the use of mobile applications (e.g., iPhone apps) had an impact on students’ learning of new statistical concepts. A control group (n = 12) was compared against a group that used a statistical mobile app (n = 13) during a simulated statistics lecture on the topic of normal distribution. Students received a classroom lecture followed by a period of either pencil-and-paper only or technology-assisted examples. They then took a quiz on the material. The overall quiz results showed that the app group outperformed the control group. When learning through examples with the mobile app, students ...


A Survey Of What Customers Want In A Cell Phone Design, Chen Ling, Wonil Hwang, Gavriel Salvendy Apr 2015

A Survey Of What Customers Want In A Cell Phone Design, Chen Ling, Wonil Hwang, Gavriel Salvendy

Dr. Chen Ling

The cell phone is an information appliance that has been widely used. It provides instant access to information and makes people more ‘connected’. The objective of our study is to investigate the relationship among the design features of the cell phone and identify the most important design features and design factors. In our survey study, we asked 1,006 college students using a 7-point Likert scale structured questionnaire to evaluate their preference of the design features and overall satisfaction of their current cell phone. Nine design factors were derived. Ten cell phone design features and five design factors that significantly ...


Effects Of Age And Psychomotor Ability On Kinematics Of Mouse-Mediated Aiming Movement, Yuenkeen Cheong, Randa Shehab, Chen Ling Apr 2015

Effects Of Age And Psychomotor Ability On Kinematics Of Mouse-Mediated Aiming Movement, Yuenkeen Cheong, Randa Shehab, Chen Ling

Dr. Chen Ling

The objective of this research is to understand the influence of age and age-related psychomotor ability on the process of mouse-mediated aiming movement. It is premised on the notions that (1) mouse-mediated aiming movements can be better understood via studying its kinematics and (2) age is a surrogate variable in kinematic differences, and that age-influenced fundamental factors such as psychomotor ability may have a more direct effect. As expected, age kinematic differences were detected. However, when comparing with age, age-influenced psychomotor ability (i.e. manual dexterity) contributed more substantially to the variances of kinematics in the ballistic phase. For homing ...


Effect Of Aircraft Datablock Complexity And Exposure Time On Performance Of Change Detection Task, Chen Ling, Lesheng Hua Apr 2015

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 ...


Engineering A Dynamic Science Learning Environment For K-12 Teachers, Patricia Hardré, Mark Nanny, Hazem Refai, Chen Ling, Janis Slater Apr 2015

Engineering A Dynamic Science Learning Environment For K-12 Teachers, Patricia Hardré, Mark Nanny, Hazem Refai, Chen Ling, Janis Slater

Dr. Chen Ling

The present study follows a cohort of 17 K-12 teachers through a six-week resident learning experience in science and engineering, and on into the planning and implementation of applications for their classrooms. This Research Experiences for Teachers (RET) program was examined using the strategic approach of design-based research, with its fluid, adaptive management of the complexity of authentic learning "in situ" and its attentive documentation of expected and unexpected events, in process and products, to capture the richness of teachers' and mentors' experiences. Research on effective teacher professional development, adult learning, situated cognition, and learning transfer were utilized to inform ...


Effect Of Glance Duration On Perceived Complexity And Segmentation Of User Interfaces, Yifei Dong, Chen Ling, Lesheng Hua Apr 2015

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 Apr 2015

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 ...


Teachers In An Interdisciplinary Learning Community: Engaging, Integrating, And Strengthening K-12 Education, Patricia Hardré, Chen Ling, Randa Shehab, Mark Nanny, Ulli Nollert, Hazem Refai, Christopher Ramseyer, Jason Herron, Ebisa Wollega Apr 2015

Teachers In An Interdisciplinary Learning Community: Engaging, Integrating, And Strengthening K-12 Education, Patricia Hardré, Chen Ling, Randa Shehab, Mark Nanny, Ulli Nollert, Hazem Refai, Christopher Ramseyer, Jason Herron, Ebisa Wollega

Dr. Chen Ling

This study examines the inputs (processes and strategies) and outputs (perceptions, skill development, classroom transfer, disciplinary integration, social networking, and community development) of a yearlong, interdisciplinary teacher learning and development experience. Eleven secondary math and science teachers partnered with an interdisciplinary team of university engineering mentors in a yearlong engineering education and project implementation program. It consisted of a 6-week on-site resident professional development and collaboration experience, with an ongoing support and follow-up including digital systems. Mixed-method, multisource data indicate that teachers engaged with motivations combining personal, intrinsic interest and classroom integration goals. They formed and sustained an active community ...


The General Public’S Weather Information-Seeking And Decision-Making Behavior During Tornado Outbreaks In The Oklahoma City Metroplex In May 2013, Chen Ling, Michelle Madison, Jessica Adams, Kevin Warren, Michael Mudd, Kim Graves Wolfinbarger, Lans Rothfusz Apr 2015

The General Public’S Weather Information-Seeking And Decision-Making Behavior During Tornado Outbreaks In The Oklahoma City Metroplex In May 2013, Chen Ling, Michelle Madison, Jessica Adams, Kevin Warren, Michael Mudd, Kim Graves Wolfinbarger, Lans Rothfusz

Dr. Chen Ling

Severe weather impacts the lives of many people. Today's technology allows weather information to be distributed to the general public in many ways. However, it is not clear how people obtain information regarding severe weather, and how they make decisions based on the information. This study surveyed people in the Oklahoma City metroplex about their weather information–seeking and decision-making behaviors during the May 2013 tornado outbreaks. The preliminary results based on 124 survey responses show that people used and trusted television news most to obtain the severe weather information, followed by siren, weather radio, radio, looking at the ...