OSIT
OSIT
Related references
1. Lu, C. Y., Kao, C., Kang, S. C., Lai, J. S. and Lee, T. H. (2010). "A generalized procedure to develop a virtual environment for the conducting of hydraulics laboratory experiments," Proceedings of The International Conference on Computing in Civil and Building Engineering (ICCCBE) 2010, Nottingham, UK. 2. 盧巧昀、高凱玲、康仕仲、李天浩、賴進松（2009），「虛擬實驗儀器系統化製作步驟－以虛 擬水利實驗為例」， 電腦與網路科技在教育上的應用研討會，台灣新竹。 3. Lu, C. C., Kang, S. C., Hsieh, S. H. and Shiu, R. S. (2009). "Improvement of a Computer-Based Surveyortraining Tool Using a User-Centered Approach," Advanced Engineering Informatics, vol. 23, 81-92. 4. Kang, S. C., Chan, Y. C., Lu, C. Y., Lai, J. S., and Lee, T. H.. The Development of Virtual Equipment– A Case Study of Venturi Tube Experiment,” Journal of Professional Issues in Engineering Education and Practice. (reviewing) 5. Chan, Y. C., Chen, Y. H., Kang, S. C. and Lee, T. H. (2008). "Development of Virtual Equipment for a Hydraulic Mechanics Experiment." Tsinghua Science and Technology, Vol. 13, Suppl. 1, 261-265.
OSIT 虛擬實驗儀器系統化製作步驟－以虛擬水利實驗為例 本研究主要討論製作虛擬水利實驗儀器的步驟方法。流體力學實驗是土木及水利工程等領域的核心學習內容。 然而，這些實驗儀器費用相當昂貴，許多學校無法負擔如此龐大的費用。使得學生必須分組輪流練習。為此， 許多研究製作較低成本的虛擬實驗儀器來輔助現實實驗課程的進行。然而，製作虛擬儀器需要將真實世界的實 驗步驟轉換至虛擬實境中，而且流體力學的實驗過程繁複 虛擬儀器設計者必須解決虛擬環境的限制。本研究 提出了一個廣義的製作步驟，應用於製作虛擬多步驟性實驗儀器。此步驟包含：（1）觀察－Observation、（2 ）分鏡－Storyboard、（3）執行－Implementation及（4）使用者測試－User Test，簡稱OSIT步驟。為了驗證 OSIT步驟之有效性，我們在台灣大學以OSIT步驟完成虛擬水利實驗儀器－強制渦流實驗儀器。 研究結果顯示，OSIT步驟，應用於步驟式實驗虛擬實驗儀器的製作，提供實驗教學者以及虛擬儀器設計者之間 有效率的溝通管道，減少協調與溝通的時間，並整合實驗理論需求以及虛擬儀器程式設計的概念，提高製作的 效率，減少虛擬儀器製作過程的錯誤修正與嘗試。此系統化步驟統一並簡化了虛擬儀器之製作過程，降低虛擬 儀器之開發困難，並且提高虛擬儀器之發展效率。
Figure xx Flowchart of OSIT procedure Actual World Observation
Storyboard
Experiment
Script
Video/Image taking
Storyboarding
3D modeling
Implementation
User Test
User Interface
Scenario design
Logic Programming
"User " errors
Print Screen Virtual World
Single direction workflow dual direction workflow Optional
A generalized procedure to develop a virtual environment for the conducting of hydraulics laboratory experiments Laboratory experiment is very basic and important course for engineering student. But the laboratory equipment are expensive and therefore school can afford to buy limited number of equipment. To make up this deficiency many researchers try to develop Virtual equipment to substitute the real equipment. However most experimental courses in engineering classes are procedural-based. It is difficult to transform from the physical world to virtual world and hard to switch the complicated experiment procedure, with continuous timing, to the virtual world, which operates on discrete timing. We have research has proposed a generalized procedure for developing virtual equipment from procedure-based experiments. The procedure has 4 main phases: (1) observation, (2) storyboarding, (3) implementation and (4) user testing; or OSIT in short. To validate OSIT, We have research team use the OSIT procedure to develop and implement a virtual equipment called the force vortex experiment. The research demonstrated that OSIT procedures applied in the developing of the virtual laboratory experiment can promote the efficiency and decrease the trial and correction of mistakes. OSIT procedures provide an effective communication channel between the laboratory teacher and virtual equipment designer and reduce the time wasted in coordination and communication and significantly reduced the total elapsed time of communication. OSIT also delivered software that better matches users’ needs. In the future, the OSIT procedure and our experiences can be reused to develop other types of virtual equipment。
Figure xx Forced Vortex Experiment equipment
Figure xx Virtual Forced Vortex Experiment equipment
OSIT Table 1 Job description in OSIT procedure Professor
Participants Teaching Assistant
Designer
Observation
theory and contents of laboratory course
operating process of the experiment
3D Modeling of equipment
Storyboard
physical phenomena of experiment
user interfaces
concept of interactive techniques
Phase
develop virtual equipment
Implementation User Test
Students
observe user test
test virtual equipment
Figure XX Storyboard phase- comparison of 3D models before and after discussion
Before discussion
After discussion
Improvement
Add the link between the Major screen and the screws in the 4 sub-screens(Red point and the characters)
Add a ruler, counterpoise and pipe to the tank
Change the operation method of the valves
Add the sub-screen of the inlet and outlet valves
Add the test data input blank for the player
Add a stopwatch
Add a comparison of the player’s test data and the standard data
Shih-Chung Jessy Kang sckang@ntu.edu.tw sckang.caece.net