• The Journal of the Korea Contents Association
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• v.18 no.4
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• pp.567-574
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• 2018

This paper investigates how Korean newly-composed pieces (Changjak Gukak) can be used as good cultural contents to publicize a characteristic and nowness of Korean culture in the era of globalization, focusing on the works of composer Seong-Cheon Lee. LEE Seong-Cheon is a typical Changjak Gukak composer who academically and creatively speculated Korean tradition and identity. In his works, traditional ones, natural-thematic ones, nationalistic ones, and Korean literary-thematic ones are the works which have a possibility to use cultural contents with respect to the Korean traditional culture and identity. This study dealt with the fact that newly-composed pieces based on traditional music can play a significant role in expanding Korean cultural contents between tradition and modern.

• Journal of Korean Ophthalmic Optics Society
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• v.14 no.4
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• pp.59-63
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• 2009

Purpose: This study was designed to compare the relative accommodation, the accommodative facility, and the addition whose 40's initial presbyopia divided into five occupations (driver, official worker, housewife, field worker, teacher). Methods: We measured the values of near point convergence (NPC), positive relative accommodation (PRA), negative relative accommodation (NRA), accommodative facility, and addition. Results: Official worker group had lower PRA, higher NRA, and lower accommodative facility compared with them of the other groups. The average of addition was as follows: official worker > driver > field worker > housewife > teacher. Conclusions: Because the difference of working environment based on occupation affects the accommodative functions and addition, it is important to consider the patient's occupation when opticians measure the addition for near vision of initial presbyopia.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.7
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• pp.245-255
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• 2016

Consumer expectation is divided into rational and emotional components with regard to the experience of products or services. The purpose of this study is to investigate the relationship between these two types of expectations and consumer satisfaction. For the theoretical framework, we use the dual expectation theory with respect to the should-expectation and will-expectation, and verify their effects on consumer satisfaction. The findings of this study imply that under rational expectation, consumer satisfaction increases when the result of their experience exceeds their expectation and the impact is stronger when the will-expectation is satisfied. Under emotional expectation, consumer satisfaction increases when the should-expectation exceeds the result of the actual performance, but decreases when there is disaccord between the will-expectation and performance. For emotional-based expectation, the impact on consumer satisfaction is stronger for should-expectancy disconfirmation than for will-expectancy disconfirmation.

• Applied Chemistry for Engineering
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• v.7 no.1
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• pp.129-135
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• 1996

The entrapping capacity of the single hydrocarbons and the entrapping equilibrium data for binary mixtures of the $C_6$ to $C_9$ hydrocarbons on the activated thiourea have been investigated. The entrapping capacity of single component varied irregularly with molecular size and was independent of temperature. In the liquid phase entrapping from binary system, the lower molecular weight hydrocarbon was entrappe preferentially. In the liquid phase entrapping from trimethylbenzene isomer and ethyltoluene isomer, selectivity was found to be related to the relative position of methyl groups in the molecules and hence the electronic configuration. Pseudocumene of a purity of 99.5wt% may be obtained from $C_9$ aromatic raffinate found in naphtha cracking center. Activated thiourea was more efficient than distillation, extractive crystallization and adductive crystallization in terms of separation factor.

• Phonetics and Speech Sciences
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• v.11 no.4
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• pp.19-33
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• 2019

This paper examines the perception of Korean phonemes by Egyptian learners of Korean and presents the learnability gradient of Korean consonants and vowels through High Variability Phonetic Training (HVPT). 50 Egyptian learners of Korean (27 low proficiency learners and 23 high proficiency learners) participated in 10 sessions of HVPT for Korean vowels, word initial and final consonants. Participants were tested on their identification ability of Korean vowels, word initial consonants, and syllable codas before and after the training. The results showed that both low and high proficiency groups did benefit from the training. Low proficiency learners showed a higher improvement rate than high proficiency learners. Based on the HVPT results, a learnability gradient was established to give insights into priorities in teaching Korean sounds to Egyptian learners.

• Journal of the Korean Institute of Telematics and Electronics C
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• v.35C no.11
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• pp.11-20
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• 1998

Testability analysis computes controllabilities and observabilities of all lines of a circuit and then evaluates fault coverage. The values of controllability and observability as well as fault coverage produced by testability analysis are used for applications of testability analysis. ITEM was evaluated as a fault coverage tool. But the values of controllability and observability at all lines of circuits must be estimated as a performance measure of testability tools for another application such as partial scan. In this paper, partial scan method based on sensitivity analysis which estimates relative improvement of detectability of circuits after scanning a flip-flop is used for performance evaluation of ITEM. Performance of ITEM, with respect to testability values on each net, has been measured by comparing ITEM and STAFAN. Partial scan performance achieved by ITEM is very similar to that of STAFAN, but ITEM takes less CPU time. Therefore ITEM is very efficient for partial scan application because ITEM runs faster for very large circuits in which execution time is critical.

• Applied Chemistry for Engineering
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• v.18 no.1
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• pp.36-40
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• 2007

The study on the isomerization reaction of endo-tetrahydrodicyclopentadiene and endo-tetrahydrodi(methylcyclopentadiene) using heteropolyacid catalyst was carried out. Exo compound was prepared from endo compound through isomerization reaction. To improve the problem of aluminum chloride as an isomerization catalyst, application of heteropolyacid was attempted. In use of Keggin type heteropolyacid, catalytic activity was extremely high at cesium substitution instead of 2.5 hydrogen atoms of $H_3PW_{12}O_{40}$. Using the cesium substituted heteropolyacid, isomerization reaction rate was faster than aluminum chloride and the effect of reaction temperature and times on reactivities were compared in isomerization of tetrahydrodicyclopentadiene and tetrahydrodi(methylcyclopentadiene).

• Applied Chemistry for Engineering
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• v.21 no.3
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• pp.337-342
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• 2010

The interaction of monochlorophenol isomers with the micellar system of TTAB (tetradecyltrimethylammonium bromide) was studied by the UV/Vis spectrophotometric method. The solubilization constants ($K_s$) of monochlorophenol isomers into this micellar system have been measured with the change of temperature. Various thermodynamic parameters (${\Delta}G^{\circ}_s$, ${\Delta}H^{\circ}_s$, and ${\Delta}S^{\circ}_s$) have been calculated and analyzed from the dependence of $K_s$ values on the temperature. The results show that the values of ${\Delta}G^{\circ}_s$ and ${\Delta}H^{\circ}_s$ are all negative but the values of ${\Delta}S^{\circ}_s$ are all positive for the solubilizations of all isomers within the measured temperature range. The effects of additives (n-butanol and NaCl) on the solubilization of monochlorophenol isomers by the same surfactant system have been also measured. There was a great change on the values of $K_s$ and CMC simultaneously with these additives. From these changes we can postulate the solubilization sites of each isomer in the micellar system of TTAB.

• Journal of the Korean Chemical Society
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• v.54 no.4
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• pp.374-379
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• 2010

The interaction of dichlorophenol isomers with the micellar system of TTAB (tetradecyltrimethylammonium bromide) was studied by the UV/Vis spectrophotometric method. The solubilization constants ($K_s$) of dichlorophenol isomers into the micellar system have been measured with the change of temperature and the various thermodynamic parameters have been calculated and analyzed from these changes. The results show that the values of ${\Delta}G^{\circ}_s$ and ${\Delta}H^{\circ}_s$ are all negative within the measured temperature range. The effects of additives (n-butanol and NaCl) on the solubilization of dichlorophenol isomers have been also measured. There was a great change on the values of $K_s$ and CMC simultaneously with these additives. From these changes we can postulate the solubilization sites of each isomers in the micellar system of TTAB.

• Journal of the Korean Chemical Society
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• v.53 no.2
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• pp.137-143
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• 2009

Liquid chromatographic enantiomer separation of N-tert-butoxycarbonyl (BOC) $\alpha$-amino acids and their ethyl esters was performed on covalently immobilized chiral column (Chiralpak IC) derived from polysaccharide derivative. The solvent versatility of the covalently immobilized Chiralpak IC in enantiomer separation of N-BOC $\alpha$-amino acid ethyl ester derivatives was shown and the chromatographic parameters of their enantioselectivities and resolution factors were greatly influenced by the nature of the mobile phase. Also the effect on the dissolving solvent for these analytes on the enantiomer separation using the same mobile phase and the examples of preparative enantiomer separation on analytical column were shown.