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10th IASTED International Conference on Computers and Advanced Technology in Education

作者： Saksiri, Benjaporn Greenstein, Joel S. Ruenwongsa, Pintip Institute for Innovation and Development of Learning Process Mahidol University Thailand Dept. of Industrial Engineering Clemson University United States

ISBN: (纸本)9780889866997

A Virtual Sign Animated Pedagogical Agent (VSAPA) is developed as an educational tool for d/Deaf students. This paper investigates the design issues addressed in the development of the tool and its associated learning environment. A usability testing methodology is proposed to evaluate and refine the resulting instructional system.

关键词： Teaching

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Applying Symmetries of Common Objects to help Students Understand Stereoselectivity for Apparently Symmetric Substrates

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Bioscience Education 2008年第1期12卷

作者： Piyachat Jittam Pintip Ruenwongsa Bhinyo Panijpan Institute for Innovation and Development of Learning ProcessDepartment of Biochemistry Faculty of Science Mahidol University Bangkok Thailand Department of Biochemistry Faculty of Science Mahidol University Bangkok ThailandInstitute for Innovation and Development of Learning Process Institute for Innovation and Development of Learning Process

We have found it an effective way of teaching symmetry in the context of stereoselectivity, to use common everyday objects with the same point groups as the substrates involved. This has helped students to distinguish between those symmetry elements which allow for stereospecificity and those which preclude it. Two symmetry elements, the simple rotation axis and the mirror plane, are needed to explain the equivalence (or its absence) between atoms or groups in the substrate while interacting with the chiral enzyme. We have used familiar objects such as blackboard erasers, scissors and purses to illustrate the point group symmetry of substrates such as ethanol, citrate, succinate and fumarate and the interaction between the EcoRI restriction enzyme and the EcoRI-DNA palindromic complex.

关键词： enzyme mirror plane rotation axis symmetry symmetric substrate

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Problems Encountered In Teaching/learning Integrated Photosynthesis: A Case of Ineffective Pedagogical Practice?

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Bioscience Education 2008年第1期12卷

作者： Bhinyo Panijpan Pintip Ruenwongsa Namkang Sriwattanarothai Institute for Innovation and Development of Learning Process Mahidol University Rama VI Road Bangkok Thailand

In this article we recount our experiences of teaching photosynthesis in an integrated way to secondary school students and teachers, science undergraduates and postgraduates. Conceptual questions were posed to investigate learners’ fundamental understanding of simple light-dependent and light-independent processes taught to most students at secondary level and beyond. We found that students did not grasp main concepts and could not apply basic knowledge to answer simple questions about photosynthesis even after multiple exposures to the topics. We attribute these shortcomings to rote learning and master-disciple relationship generally practised in Thailand. We propose here a change of emphasis from teaching to learning, especially, self-learning, collaborative learning, self-reflection and integration of knowledge by self. Corrective suggestions are given about changing the common practices of teaching/learning with a cognizance of the present and future era of easy access to electronic information and globalization where life-long learning, problem solving skills, originality and creativity hold keys to success.

关键词： photosynthesis conceptual problems secondary school undergraduate student-centred learning

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A simple apparatus for demonstrating how light rays emanate from a point source

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Physics Teacher 2009年第4期47卷 243-245页

作者： Kaewkhong, Kreetha Emarat, Narumon Arayathanitkul, Kwan Mazzolini, Alex Institute for Innovation and Development of Learning Process Mahidol University Thailand Department of Physics Faculty of Science Mahidol University Thailand Faculty of Engineering and Industrial Sciences Swinburne University of Technology Australia

A point source of light sends out light rays in all directions and in straight lines. This is an important concept for all students who study elementary optics at the high school level. Most physics textbooks discuss this topic only briefly.^1-6 They usually explain the concept by using two-dimensional diagrams even though a three-dimensional discussion may be more instructive. Much of the commercial demonstration equipment that can be used to explain this concept is very expensive (e.g., the optics kit from Suksapan Panit Company⁷ in Thailand costs approximately $70 U.S.). This and similar optics kits show that light propagates in straight lines but do not represent where the light beams come from. Because it is an abstract idea, most students still have considerable misunderstanding about this concept.^8-F14 This paper describes an effective but inexpensive (approximately $20 U.S.) apparatus to illustrate the behavior of light rays emitted isotropically from a point source of light. The apparatus is simple and is intelligible to students.

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Guided Inquiry learning Unit on Aquatic Ecosystems for Seventh Grade Students

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Journal of Natural Resources and Life Sciences Education 2009年第1期38卷 106-114页

作者： Jongdee To-im Pintip Ruenwongsa Institute for Innovative Learning (formerly Institute for Innovation and Development of Learning Process) Mahidol University Rama 6 Road Bangkok 10400 Thailand

Using mini-aquaria experiments, a learning unit on the effects of light period on aquatic ecosystems was developed for 7th grade students. This guided inquiry unit was aimed at helping students understand basic ecological principles involved in relationships among physical, chemical, and biological components in aquatic ecosystems. It involved asking guiding questions to direct students’ investigations and experimental designs, providing experimental data for analysis and interpretation, and facilitating students’ construction of explanations. The students’ achievements were assessed through a questionnaire, written documents, interviews, and classroom observation. In this study, students were encouraged to ask questions throughout the learning sequence, in which they did ask more intelligent questions, generate fruitful ideas, and finally develop their own understanding. Students gradually accumulated conceptual understanding through the designed learning activities, and both students and teachers had a positive attitude toward the learning unit. The minimum and maximum values of the students’ perceptions on the learning unit were found to be 4.14 and 4.65 (on a 5-point scale). The mean and standard deviation of the 15 items on perception were 4.41 and 0.41, indicating a moderate level of approval. One advantage of this learning unit is in its low cost for implementation while producing effective learning activities, especially in schools with budgetary and time constraints. This study should inspire teachers to adapt and adopt the proposed activities to enhance students’ understanding of the ecosystems.

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Reordering: A stepping-stone to perfect Thai sign generation

Reordering: A stepping-stone to perfect Thai sign generation

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3rd IASTED International Conference on Computational Intelligence, CI 2007

作者： Dangsaart, Srisavakon Cercone, Nick Naruedomkul, Kanlaya Sirinaovakul, Booncharoen Institute for Innovation and Development of Learning Process Mahidol University Bangkok Thailand Department of Science York University Toronto ON Canada Department of Mathematics Mahidol University Bangkok Thailand Department of Computer Engineering King Mongkut's University of Technology Thonburi Bangkok Thailand

ISBN: (纸本)9780889866713

We proposed the Sign Code Reordering approach (SCR) for reordering the intermediate sign codes (ISC) to Sign code script (SCS) generation. SCR uses language structure matching techniques to reduce complicated grammar rules, provide efficient results. SCR comprises three steps: extraction, reordering and integration. The distinction between source and target language in both grammar and vocabulary is concerned in each processing step to ensure the accuracy of reordering. SCR focuses on accurate and acceptable reordering that are not conforming to the original structure. SCR was designed to capture linguistic differences such as phrase, sentence and multi-sentence structures, no matter how long the input sentence is. The SCR prototype system was implemented and tested to reorder a number ISCs. The test results have been proved that SCR arranges ISCs successfully. SCR can be augmented into any NLP application which requires ISC arrangement e.g., T3STS. T3STS translates Thai text into Thai Sign language. Thai Sign language is the language of the Deaf in Thailand.

关键词： Codes (symbols)

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TSTMT: Step towards an accurate thai sign translation

TSTMT: Step towards an accurate thai sign translation

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ICMLA 2005: 4th International Conference on Machine learning and Applications

作者： Ditcharoen, Thammanoon Gereone, Nick Naruedomkul, Kanlaya Tipakorn, Bundit Institute for Innovation and Development of Learning Process Mahidol University Bangkok Thailand Department of Computer Science Dalhousie University Halifax Canada Department of Mathematics Mahidol University Bangkok Thailand Department of Computer Engineering King Mongkut's University of Technology Thonburi Bangkok Thailand

ISBN: (纸本)0769524958

We propose Thai Sign to Thai Machine Translation (TSTMT), an alternative approach to machine translation which is used for translating from Thai sign language into Thai text, TSTMT performs the translation by recognizing an image sequence of signs as sign words and synthesizing a target sentence from those sign words, TSTMT represents a hybrid of image recognition and natural language processing techniques. This approach is comprised of seven modules which are straightforward and extendable. The applications of TSTMT can be used to facilitate learning in deaf people and to help them to communicate with hearing people via their own language. In this paper the idea and initial experiment are presented. © 2005 IEEE.

关键词： Natural language processing systems

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Thai Intelligent Tutor with Information Retrieval

Thai Intelligent Tutor with Information Retrieval

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International Conference on Integration of Knowledge Intensive Multi-Agent Systems (KIMAS)

作者： N. Rattanawongchaiya S. Sonamthiang K. Naruedomkul Institute for Innovation and Development of Learning Process Mahidol University Thailand Department of Mathematics Faculty of Science Mahidol University Bangkok Thailand

Thai Intelligent Tutor with Information Retrieval (TITIR) is a multi-component intelligent tutor system. TITIR borrows interesting ideas from many fields including natural language processing, information retrieval, and intelligent tutoring system, TITIR facilitates students' learning and communicating with the tutor via their own language in order to allowing student express their requirements or their needs better and easier. Personalized information retrieval is embedded in the system to retrieve the appropriate contents for each student by taking their personality into account.

关键词： Information retrieval Natural languages Intelligent systems Mathematics Artificial intelligence Computer aided instruction Logic Content based retrieval Ontologies USA Councils

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PKIP: feature selection in text categorization for item banks

PKIP: feature selection in text categorization for item bank...

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International Conference on Tools for Artificial Intelligence (ICTAI)

作者： A. Nuntiyagul K. Naruedomkul N. Cercone D. Wongsawang Institute for Innovation and Development of Learning Process Mahidol University Thailand Computer Science Department Faculty of Computer Science Dalhousie University Canada Department of Mathematics Faculty of Science Mahidol University Thailand

We propose an alternative approach to text categorization for item banks. An item bank is a collection of textual data in which each item consists of short sentences and has only a few relevant words for categorization; some items could be categorized into many categories. The traditional categorization techniques cannot provide sufficiently accurate results because of a "lack of words" problem. From this observation, items in the same category always have the same group of terms (or keywords) and the similar locations of these terms in phrases suggest that the items have a high probability to be in the same category. Our new methodology PKIP, patterned keywords in phrase, is proposed to improve categorization accuracy and recover from the "lack of words "problem. The k-highest weight order words are selected as the keywords from each category and their patterns are mapped for feature selection. The value of k affects the classification result. The item bank categorization process is based on a supervised machine learning technique. The sample of the item bank that is used in this research is the collection of Thai primary mathematics problems item bank and we use SVM in the Weka machine learning software package as our classifier. The result of the classification shows that our approach produces acceptable classification results and the highest classification result is given when k = 12

关键词： Text categorization Mathematics Educational institutions Computer science Machine learning Testing Chemistry Technological innovation Support vector machines Support vector machine classification

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A handheld LED coloured-light mixer for students to learn collaboratively the primary colours of light

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Physics Education 2009年第2期44卷 123-128页

作者： Nopparatjamjomras, Suchai Chitaree, Ratchapak Panijpan, Bhinyo Institute for Innovation and Development of Learning Process Mahidol University Bangkok 10400 Rama VI Road Thailand Department of Physics Mahidol University Bangkok 10400 Rama VI Road Thailand

To overcome students' inaccurate prior knowledge on primary additive colours, a coloured-light mixer has been constructed to enable students to observe directly the colours produced and reach the conclusion by themselves that the three primary colours of light are red, green, and blue (NOT red, yellow, and blue). Three closely packed tiny light-emitting diodes (LEDs) producing primary colours are combined with green intensity varying circuitry to generate the standard colour-triangle secondary colours and various shades ranging from yellow to orange and pale blue to cyan. In the laboratory, students worked collaboratively, predicting, observing and explaining, and finally discussing until there was a consensus. © 2009 IOP Publishing Ltd.

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