David Hastie | University of Wollongong (original) (raw)
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Papers by David Hastie
Particulate Science and Technology, 2015
In an effort to improve learning outcomes in a second year Engineering Fluid Mechanics subject, t... more In an effort to improve learning outcomes in a second year Engineering Fluid Mechanics subject, the first author has developed and piloted a series of online multiple choice quizzes (MCQ) as formative assessment tools. This paper describes the development and implementation of these quizzes and the evaluation of their effect on students' results in a formal written mid-session exam and also final exam. Students' perception of the quizzes is also captured and discussed through the use of a brief, in class survey. The effect of these MCQs was investigated for two main cohorts of students, those who voluntarily attempted the MCQs and those that did not participate at all. Student participation has been compared against mid-session and final examination results as well as Weighted Average Marks (WAM) (or Grade Point Averages (GPA)) and demographic information. It has been found that there was a noticeable increase in exam marks for students who attempted the MCQs. In addition, f...
Faculty of Engineering Papers, 2005
Particulate Sci Technology, 2007
This article presents three sensing methods developed for the nonintrusive monitoring of importan... more This article presents three sensing methods developed for the nonintrusive monitoring of important flow parameters in dense-phase pneumatic conveying. With the optical measurement system, images of the flow are acquired and an image analysis is used to determine the sequence, length, and velocity of slugs for given materials and operating conditions. The conveying parameters of interest are also monitored with a capacitive sensor by means of exploiting electrical properties of the flowing media. The charge-based measurement system uses a field meter to determine the electric field strength caused by charged particles and provides information about the sequence and regularity of the moving slugs. The noninvasive principle of all three methods avoids concerns about particle contact effects (e.g., wear of the measurement equipment or interference with the flow). All three prototype sensors have been tested under slug flow conditions. A comparison of the three sensing methods against key requirements in pneumatic conveying reveals that capacitive sensing seems to be best suited for reliable flow determination in slug flow.
Monday, 24 April 2006 - 9:40 AM 12f. Remote Monitoring of Slug Sequence and Flow Stability in Den... more Monday, 24 April 2006 - 9:40 AM 12f. Remote Monitoring of Slug Sequence and Flow Stability in Dense-Phase Pneumatic Conveying. Anton Fuchs 1 , Peter W. Wypych 2 , David B. Hastie 2 , and Ian Frew 2 . (1) Institute of Electrical ...
2014 IEEE International Conference on Industrial Engineering and Engineering Management, 2014
Particulate Science and Technology, 2015
In an effort to improve learning outcomes in a second year Engineering Fluid Mechanics subject, t... more In an effort to improve learning outcomes in a second year Engineering Fluid Mechanics subject, the first author has developed and piloted a series of online multiple choice quizzes (MCQ) as formative assessment tools. This paper describes the development and implementation of these quizzes and the evaluation of their effect on students' results in a formal written mid-session exam and also final exam. Students' perception of the quizzes is also captured and discussed through the use of a brief, in class survey. The effect of these MCQs was investigated for two main cohorts of students, those who voluntarily attempted the MCQs and those that did not participate at all. Student participation has been compared against mid-session and final examination results as well as Weighted Average Marks (WAM) (or Grade Point Averages (GPA)) and demographic information. It has been found that there was a noticeable increase in exam marks for students who attempted the MCQs. In addition, f...
Faculty of Engineering Papers, 2005
Particulate Sci Technology, 2007
This article presents three sensing methods developed for the nonintrusive monitoring of importan... more This article presents three sensing methods developed for the nonintrusive monitoring of important flow parameters in dense-phase pneumatic conveying. With the optical measurement system, images of the flow are acquired and an image analysis is used to determine the sequence, length, and velocity of slugs for given materials and operating conditions. The conveying parameters of interest are also monitored with a capacitive sensor by means of exploiting electrical properties of the flowing media. The charge-based measurement system uses a field meter to determine the electric field strength caused by charged particles and provides information about the sequence and regularity of the moving slugs. The noninvasive principle of all three methods avoids concerns about particle contact effects (e.g., wear of the measurement equipment or interference with the flow). All three prototype sensors have been tested under slug flow conditions. A comparison of the three sensing methods against key requirements in pneumatic conveying reveals that capacitive sensing seems to be best suited for reliable flow determination in slug flow.
Monday, 24 April 2006 - 9:40 AM 12f. Remote Monitoring of Slug Sequence and Flow Stability in Den... more Monday, 24 April 2006 - 9:40 AM 12f. Remote Monitoring of Slug Sequence and Flow Stability in Dense-Phase Pneumatic Conveying. Anton Fuchs 1 , Peter W. Wypych 2 , David B. Hastie 2 , and Ian Frew 2 . (1) Institute of Electrical ...
2014 IEEE International Conference on Industrial Engineering and Engineering Management, 2014