• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2001.05a
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• pp.234-238
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• 2001

This study aims to review the present conditions of domestic laboratory test facilities for measuring impact sound insulation. The result will be useful to establish the new Korean Standard to coincide with ISO 140-6.

• English Language & Literature Teaching
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• no.3
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• pp.43-54
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• 1997

According to Asher(1972) listening skill must be taught before any other skills. Despite such an importance of listening skill, listening tests taken at the secondary schools depend on simple multiple choice method. So more various method such as Task-Based Listening Test need suggesting. This study aims at (1) three step listening material development (2) and advancement of listening ability through the materials.

• Journal for History of Mathematics
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• v.13 no.2
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• pp.23-32
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• 2000

Using some units of length, weight and time, human beings have constructed their own cultures in many regions on earth. This paper aims to study the applied methods of Ching and Pil, i.e. the units of length and weight in the Chosun dynasty and to investigate their meanings.

• The Academic Congress of Korean Shoulder and Elbow Society
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• 1997.05a
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• pp.24-27
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• 1997

$\cdot$ aims for open stabilization: anatomic restoration optimal stabilization $\cdot$ open stabilization: predictable results acceptable recurrence rates few complications good range of motion $\cdot$ wide eye for open, narrow eye for scopy

• Journal of the Korean Crystal Growth and Crystal Technology
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• v.9 no.4
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• pp.381-383
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• 1999

First topic of this paper aims to clarify how oxygen and heat transfer in silicon melt under cusp-shaped magnetic fields. We obtained asymmetric temperature distribution by using time dependent and three-dimensional calculation. Second topic is study on molecular dynamics simulation, which was carried out to estimate diffusion constants of oxygen in silicon melt.

• Proceedings of the KIPE Conference
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• 1998.10a
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• pp.91-96
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• 1998

This study aims to realize high precision repetitive positioning control of the linear servo motor. The authors have previously improved the repeatability positioning precision by employing a two-degree-of-freedom PID controller in the positioning control, rather than equal distance positioning, and investigates the repeatability positioning precision.

• Proceedings of the KSPS conference
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• 2000.07a
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• pp.75-85
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• 2000

Koreans and English have different phonotactic constraints and phonological rules. It causes Korean learners to have difficulty in pronouncing certain English consonant clusters correctly. This paper aims to discuss what English consonant clusters are difficult for Korean learners to learn and why this difficulty arises by comparing phonotactic constraints and phonological rules of English and Korean.

• Journal for History of Mathematics
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• v.14 no.2
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• pp.69-76
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• 2001

This paper aims to show an inner, basic harmony between metaphysics and current directions in mathematics and in the philosophy of mathematics. In this attempt, the general truths of metaphysics and the truths particularly relevant to the nature of mathematical abstraction serve as speculative guides in ordering the content and discussing the nature of the multiple questions lie between and disputed frontiers of metaphysics and mathematics.

• Journal for History of Mathematics
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• v.14 no.2
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• pp.1-12
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• 2001

Considering the four arithmetical operations, the operations over some problems in the second half periods of Chosun Dynasty were dealt in the different dimensions were not reasonable and tile units of the dimensions were neglected. This paper aims to introduce some questionable solved problems related to tile equations higher than tile second degree.

• Journal for History of Mathematics
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• v.12 no.2
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• pp.99-118
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• 1999

This study aims to find the significance of the ancient Egyptian arithmetic in mathematics education and to analyze the educational value by practical teaching of the Egyptian multiplication. In this study, we confirmed that application of historical materials in mathematics instruction enable students to awaken their interest, to offer the opportunities of exploration, and furthermore to develop their mathematical thinking ability.