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Articles 1 - 8 of 8
Full-Text Articles in Engineering
Predicting Public Bicycle Adoption Using The Technology Acceptance Model, Benjamin T. Hazen, Robert E. Overstreet, Yacan Wang
Predicting Public Bicycle Adoption Using The Technology Acceptance Model, Benjamin T. Hazen, Robert E. Overstreet, Yacan Wang
Faculty Publications
Bicycle sharing programs provide a sustainable mode of urban transportation. Although cities across the globe have developed these systems for their citizens and visitors, usage rates are not as high as anticipated. This research uses the technology acceptance model as the basis to understand one’s intention to adopt bicycle sharing programs. Using survey data derived from 421 participants in Beijing, China, the proposed covariance-based structural equation model consisting of perceived quality, perceived convenience, and perceived value is found to predict 50.5% of the variance in adoption intention. The findings of this research contribute to theory and practice in the burgeoning …
Connecting Self-Efficacy And Nature Of Science Shifts In Undergraduate Research Experiences, Gina Quan
Connecting Self-Efficacy And Nature Of Science Shifts In Undergraduate Research Experiences, Gina Quan
Faculty Publications
Undergraduate research can support students’ more central participation in physics. We present analysis of one way this participation may shift: changes in their beliefs about the Nature of Science coupled to changes in a sense of ability to contribute to authentic research. Students in the study worked with faculty and graduate student research mentors on research projects and also participated in a seminar where they learned about research and reflected on their experiences. In videotaped interviews, we asked students to describe their experiences in research. Students developed nuanced views about how the research process works coupled to shifts in their …
Tensions In The Productivity In Design Task Tinkering – Fundamental, Gina Quan, Ayush Gupta
Tensions In The Productivity In Design Task Tinkering – Fundamental, Gina Quan, Ayush Gupta
Faculty Publications
Tensions in the Productivity in Design Task TinkeringTinkering is an ad-hoc approach to a problem and involves the practice of manipulating objectsto characterize and build knowledge about a particular system in an exploratory way, often withthe goal of getting some product/idea to produce desired behavior (e.g. Turkle & Papert, 1991;Berland, 2013; Roth, 1996). Tinkering thus contrasts with more deliberate activity towardsunderstanding how some phenomenon works or towards achieving conceptual understanding.Some researchers have argued that tinkering is an unproductive process because it does notalways lead to progress and/or conceptual learning (Law, 1998; Yeshno & Ben-Ari, 2001).Others view it as productive for …
Impact Of Prognostic Uncertainty In System Health Monitoring, Robert M. Vandawalker, David R. Jacques, Jason K. Freels
Impact Of Prognostic Uncertainty In System Health Monitoring, Robert M. Vandawalker, David R. Jacques, Jason K. Freels
Faculty Publications
Across many industries, systems are exceeding their intended design lives, whether they are ships, bridges or military aircraft. As a result failure rates can increase and unanticipated wear or failure conditions can arise. Health monitoring research and application has the potential to more safely lengthen the service life of a range of systems through utilization of sensor data and knowledge of failure mechanisms to predict component life remaining. A further benefit of health monitoring when combined across an entire platform is system health management. System health management is an enabler of condition based maintenance, which allows repair or replacement based …
Toward Agent-Based Modeling Of The U.S. Department Of Defense Acquisition System, Karl Schwenn, John M. Colombi, Theresa Wu, Kyle F. Oyama, Alan W. Johnson
Toward Agent-Based Modeling Of The U.S. Department Of Defense Acquisition System, Karl Schwenn, John M. Colombi, Theresa Wu, Kyle F. Oyama, Alan W. Johnson
Faculty Publications
The systems development, procurement and sustainment of a nation's military equipment is vital to its national interests, but the process is complex, constantly changing and highly adaptive, as well as time consuming and costly. The U.S. Department of Defense (DoD) expends both large amounts of capital and manpower to equip its armed forces. This research seeks to identify opportunities to gain better insight into the functioning of the defense acquisition system, building on previous simulations. A case is made that the DoD Requirements, Planning Acquisition, Technology and Logistics System is a complex adaptive system that has characteristics appropriate for exploration …
Bus Rapid Transit (Brt) Toolbox: Brt Person Throughput-Vehicle Congestion Tradeoffs, Li Jingquan, H.-S. Jacob Tsao, Ching-Yao Chan, Kun Zhou, Wei-Bin Zhang
Bus Rapid Transit (Brt) Toolbox: Brt Person Throughput-Vehicle Congestion Tradeoffs, Li Jingquan, H.-S. Jacob Tsao, Ching-Yao Chan, Kun Zhou, Wei-Bin Zhang
Faculty Publications
This report documents a research effort to understand the current practice and issues associated with Bus Rapid Transit (BRT) planning and deployment. It reviewed the design options incorporated into existing BRT deployments across California and the nation. The project team interviewed practitioners of California Department of Transportation (Caltrans) Districts and transit agencies to understand the BRT project approval decision-making process, the impacts of BRT implementation and the Measures of Effectiveness (MOEs) for transit and non-transit system performance. The studies revealed that though Caltrans and transit agencies do use a similar set of MOEs for the evaluation of BRT projects, the …
A General Intuitive Design Pattern For Optimally Sequencing Treatment Combinations In 2k Factorial Experiment And A Simple Estimation Algorithm, H.-S. Jacob Tsao, Minnie Patel
A General Intuitive Design Pattern For Optimally Sequencing Treatment Combinations In 2k Factorial Experiment And A Simple Estimation Algorithm, H.-S. Jacob Tsao, Minnie Patel
Faculty Publications
The number of model parameters of a 2k factorial design grows exponentially. When the number of factors is large, numerous higher-order interactions constitute a vast majority of the model parameters while many of them do not exist or are insignificant. The classic methods of fractional factorial designs, Plackett–Burman designs, Taguchi designs, etc. seek an already developed and often cataloged design that fits exactly the problem being tackled or select a design that fits it the most. Most, if not all, of these designs were developed in absence of convenient computation tools and enjoy computational simplicity. The necessary number of treatment …
A Human-Centered Credit-Banking System For Convenient, Fair And Secure Carpooling Among Members Of An Association, H.-S. Jacob Tsao, Magdalini Eirinaki
A Human-Centered Credit-Banking System For Convenient, Fair And Secure Carpooling Among Members Of An Association, H.-S. Jacob Tsao, Magdalini Eirinaki
Faculty Publications
This paper proposes an unconventional carpool-matching system concept that is different from existing systems with four innovative operational features: (F1) The proposed matching system will be used by members of an association and sponsored by the association, e.g., the employees of a company, members of a homeowner association, employees of a shopping center. This expands the scope beyond commute trips. Such associations can also voluntarily form alliances to increase the number of possible carpool partners and geographical reach. (F2) Service provided by a driver or received by a rider incurs credit or debt to a bank centrally and fairly managed …