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Service based E-Learning System Model using IRT Hae-Gill Choi1, Hwa-Young Jeong2 1 Dept. of Information and Communication, Kyung Hee Cyber University, Hoegi-dong, Seoul, 130-701, Korea 2 Humanitas College, Kyung Hee University, 1 Hoegi-dong, Dongdaemun-gu, Seoul, 130-701, Republic of Korea ahgchoi@khcu.ac.kr, bhyjeong@khu.ac.kr (Corresponding author) Keywords: Learning materials, E-learning system, Learning system model, IRT, Web service.
This work is to support learning materials to user who is students or learner by service based learning process on the internet.
And all of learning process logic from the learning provider can support their material using the internet as WSDL and SOAP forms.
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This paper reports the efforts to develop a direct strain measurement system for micro/nano scale thin film materials.
Introduction Thin film materials are the basis of microelectronics devices and MEMS fabrication processes.
This is because the governing mechanisms for mechanical behavior of thin films often differ from those of bulk materials.
While tensile test has proven to be a universal method for extracing mechanical properties of materials, it has become difficult to monitor the applied load and displacement in such small scales.
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Activated Carbons Prepared from Natural and Synthetic Raw Materials with Potential Applications in Gas Separations Isabel P.P.
The performance of different materials as CMS is normally evaluated in terms of the kinetics of adsorption of different gases.
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Progress in Materials Science 92 (2018) 112-224
Journal of Mechanical Science and Technology 32(10) (2018) 4883-4892
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CIRP Journal of Manufacturing Science and Technology 35 (2021) 361-370
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In general, the pH value of composting materials or in the initial fermentation was weakly acidic to neutral.
Moreover, earthworm activities in substrate materials accelerated the mineralization of materials, and therefore contribute effciently in reduction of the wastes materials[19].
These indicated the role of earthworm in accelerating the mineralization and decomposition of materials
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