수산용 항생제의 사용실태와 절감방안

정태성,Jeong, Tae-Seong 대한수의사회 2006 대한수의사회지 Vol.42 No.1

방재정보분석센터 종합재난정보관리시스템

정태성,양동민,장대원,최계운,Jeong, Tae-Seong,Yang, Dong-Min,Jang, Dae-Won,Choe, Gye-Un 한국방재안전학회 2008 한국방재안전학회 논문집 Vol.1 No.4

소하천 재해위험도 경감에 대한 평가 및 재해예방사업의 효율적 운영전략

정태성,Jeong, Tae-Seong 한국방재협회 2011 방재저널 Vol.13 No.2

저장대모형의 변수결정방법에 관한 연구

정태성,서일원,Jeong, Tae-Seong,Seo, Il-Won 한국수자원학회 2000 한국수자원학회논문집 Vol.33 No.1

B20 결정구조와 MnGe와 MnSi의 전자구조 및 자기적 특성

정태성,Jeong, Tae Seong 한국재료학회 2019 한국재료학회지 Vol.29 No.8

The magnetic properties and electronic structures of the B20 crystal structure MnGe and MnSi were investigated using the density functional theory with local density approximation. The low symmetry of the B20 crystal structure plays a very important role to make electromagnetic characteristics of these materials. The important result of the calculations is that it can be observed the appearance of a pair of gaps in the density of states near the Fermi level in both compounds. These features are results from d-band splitting by the low symmetry of the crystal field from B20 crystal structure. It can be seen that there is half-metallic characteristics from the density of states in both compounds. The calculation shows that the value of magnetic moment of MnGe is 5 times bigger than that of MnSi even though they have same crystal structure. The electronic structures of paramagnetic case have a very narrow indirect gap just above the Fermi level in both compounds. These gaps acquire some significance in establishing the stability of the ferromagnetic states within the local density approximation. Calculation shows that the Mn 3d character dominates the density of states near the Fermi level in both materials.

헤비페르미온계 CeNi₂Ge₂의 자기 및 열적 특성

정태성,Jeong, Tae Seong 한국재료학회 2019 한국재료학회지 Vol.29 No.7

The electromagnetic and thermal properties of a heavy fermion $CeNi_2Ge_2$ are investigated using first-principle methods with local density approximation (LDA) and fully relativistic approaches. The Ce f-bands are located near the Fermi energy $E_F$ and hybridized with the Ni-3d states. This hybridization plays important roles in the characteristics of this material. The fully relativistic approach shows that the 4f states split into $4f_{7/2}$ and $4f_{5/2}$ states due to spin-orbit coupling effects. It can be found that within the LDA calculation, the density of states near the Fermi level are mainly of Ce-derived 4f states. The Ni-derived 3d states have high peaks around -1.7eV and spreaded over wide range around the Fermi level. The calculated magnetic of $CeNi_2Ge_2$ with LDA method does not match with that of experimental result because of strong correlation interaction between electrons in f orbitals. The calculations show that the specific heat coefficient underestimates the experimental value by a factor of 19.1. The discrepancy between the band calculation and experiment for specific heat coefficient is attributed to the formation of a quasiparticle. Because of the volume contraction, the exchange interaction between the f states and the conduction electrons is large in $CeNi_2Ge_2$, which increases the quasiparticle mass. This will result in the enhancement of the specific hear coefficient.

헤비 페르미온 CePd₂Si₂의 전자기적 특성

정태성,Jeong, Tae Seong 한국전기전자재료학회 2019 전기전자재료학회논문지 Vol.32 No.5

The electromagnetic properties of heavy fermion $CePd_2Si_2$ are investigated using density functional theory using the local density approximation (LDA) and LDA+U methods. The Ce f-bands are located near the Fermi energy and hybridized with the Pd-3d states. This hybridization plays an important role in generating the physical characteristics of this compound. The magnetic moment of $CePd_2Si_2$ calculated within the LDA scheme does not match with the experimental result because of the strong correlation interaction between the f orbitals. The calculation shows that the specific heat coefficient underestimates the experimental value by a factor of 5.98. This discrepancy is attributed to the formation of quasiparticles. The exchange interaction between the local f electrons and the conduction d electrons is the reason for the formation of quasiparticles. The exchange interaction is significant in $CePd_2Si_2$, which makes the quasiparticle mass increase. This enhances the specific heat coefficient.

태권도장 학부모가 지각한 관계혜택이 고객만족 및 충성도에 미치는 영향

정태성(Jeong, Tae-Seong) 한국체육과학회 2016 한국체육과학회지 Vol.25 No.1

The purpose of this study was to examine the relationship among relationship benefits, customer satisfaction, and loyalty of taekwondo training centers. The subjects were parents of Taekwondo trainees from ten Taekwondo training centers, and 300 data were collected and 293 of them were chosen as for final data analysis. Data processing was done for frequency analysis, exploratory factor analysis, correlation analysis, cronbach’s α test and regression analysis using SPSSWIN Ver. 22.0. Based on the above study method and procedures, the result of the study are summarized as follows. First, relationship benefits had significant influence on customer satisfaction. Second, relationship benefits had significant influence on loyalty. Third, customer satisfaction had significant influence on loyalty.

오미자 물 추출물을 이용한 물김치의 품질특성

정태성(Tae-Seong Jeong),정은주(Eun-Ju Jeong),이신호(Shin-Ho Lee) 한국식품영양과학회 2008 한국식품영양과학회지 Vol.37 No.10

건 오미자 1%, 2%, 3% 첨가하여 침출시킨 오미자 물 추출물을 담금 용수로 하여 물김치를 제조하여 발효 중 이화학적 미생물학적 특성을 대조구와 비교하였다. pH는 초기 대조구 6.53, 오미자 물김치의 농도별 pH는 각각 3,63, 3.29, 3.17이었으며, 발효가 진행됨에 따라 대조구는 낮아지고 오미자 물김치는 다소 높아졌다. 물김치의 산도 변화는 pH와 유사한 경향을 나타내었다. 발효 과정 중 총 균수와 젖산균수의 변화는 유사하였으며, 오미자 물김치에서 대조구에 비해 생균수는 적었으며, 오미자 농도가 증가함에 따라 생균수는 감소하였다. 조직감은 발효 기간 동안 경도, 씹힘성, 응집성, 탄력성이 감소하였으며, 1% 오미자 물김치의 경우 대조구에 비해 유의적으로 높은 값을 유지하였다. 오미자 물 추출물로 담근 물김치는 전자공여능은 오미자 추출물의 농도가 증가함에 따라 증가하였으며, 3% 오미자 물김치가 62.7%로 가장 높았다. 아질산염 소거능 역시 오미자 추출물의 농도가 증가함에 따라 증가하였으며, 숙성 12일째 가장 높은 소거능을 나타내었다. 기호성 검토결과, 맛과 종합적 기호도에서 1% 오미자물 추출물로 담금 김치가 가장 우수하였다. The physiological and microbiological characteristics of various mul-kimchis prepared with omija (Schiznadra chinensis) water extract (1, 2, 3 v/w%) (omija mul-kimchi) or water (control) were investigated during fermentation for 21 days at 10℃. The pH of omija mul-kimchi was lower than that of control and lowered with increasing the concentration of omija between 1% and 3%. The pH did not change significantly during fermentation in omija mul-kimchi compared with control. The changes in titratable acidity were similar in pH. The change of total microbs and lactic bacteria during fermentation was similar in various mul-kimchis and the viable cell numbers in omija mul-kimchi were lower than in control. The viable cell of mul-kimchi decreased with increasing the concentration of omija water extract. The texture of various mul-kimchi such as hardness, cohesiveness, chewiness and springiness, was decreased but the texture of 1% omija mul-kimchi was maintained significantly higher than that of control during fermentation. The DPPH radical and nitrite scavenging activity of omija mul-kimchi were higher than those of control and the activities increased with increasing concentrations of omija water extract. The sensory quality of 1% omija mul-kimchi showed the highest value in taste and overall acceptability among the tested mul-kimchis.

태권도 품새의 무도성과 실전성 및 겨루기 연관성에 관한 연구

정태성(Jeong, Tae-Seong) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.5

The purpose of this study is inherent in the practice of Taekwondo Poomsae practice martial arts, and four people on the subjects of discussion about Taekwondo Poomsae targets were identified in the inherent worth. First, as the mother of Taekwondo Training courses to focus away from the winner Process-oriented characterisdc castle has been deschbed martial arts. In the end the essence of Taekwondo Poomsae the dimensions of the martial art Taekwondo practical purposes or to be beyond the technical level of training that exist in nature and the universe through the day, and acquire the principles and the means to pursue life, and this blend of discrepancies were not "self-completion of life" can be called the martial arts and are subject to availability. Second, the practice of Poomse Taekwondo Poomsae Poomse the framework of thediscipline and the practice is capable of breaking off when it caught were common comments. Poomsae in the narrow space using lean technology is characterized by the ability to respond. That is a relative advantage and kicks away from the punch faces separately from the price, elbows, knees, etc. Sparring stroke technology can not be used as an emergency despite the hands-on grappling techniques to be used is also the great advantage of Poomsae practice. The results of the draw and practice the martial arts star is effective in explaining the value inherent in Poomse found out that he can do.