• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.15 no.4
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• pp.57-61
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• 2001

The {111}<112> deformation torture, which originated from the {110}<00l> texture near the surface of hot bands, is not prerequisite for the recrystallized {110}<001> Goss texture. During final annealing, surface-energy-induced selective growth of grains urn at the strip surface of 3%Si-Fe alloys containing 6ppm bulk content of sulfur. With decreasing final reduction, the probability that Goss grains survive under the highly segregated sulfur atmosphere and have a chance for later surface-energy-induced selective growth becomes higher, resulting in high magnetic induction.

• Korean Journal of Materials Research
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• v.9 no.11
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• pp.1049-1054
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• 1999

Two-step growth method is suggested to enhance the alignment of highly oriented diamond films. (100) Si wafers are pretreated with negative biasing of - 200 V at $850^{\circ}C$ for 20 min with 4 % methane in hydrogen plasma. The pretreated wafers are grown under the lst-step growth conditions(2 % CH$_4$ in H$_2$, $810^{\circ}C$) from 2 hr to 35 hr, in order to obtain <100> textured films. The 2nd-step growth(2 % CH$_4$ in H$_2$, $850^{\circ}C$) is carried out to make diamond films having (100) growth planes, which are parallel to the substrate. The alignment of the films after the 1st-step growth, has been analyzed by {111} X-ray pole figure, which is improved abruptly with increasing film thickness. However, the pyramidal surface morphology is inevitable. These morphology is flattened after the 2nd-step growth by developing the (100) facets parallel to the substrate. The alignment of the highly oriented textured films after the two-step growth depends on the thickness of the 1st-step growth film.

• Polymer(Korea)
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• v.39 no.3
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• pp.412-417
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• 2015

A critical element in tissue engineering approaches is a control of the mechanical properties of polymer scaffolds to regulate cell phenotype, which may lead to clinically successful tissue regeneration. In this study, we hypothesized that gel stiffness could be a key factor to manipulate adhesion and proliferation of different types of cells. RGD-modified alginate gels with various mechanical properties were prepared and used as a substrate for MC3T3-E1 and H9C2 cells. Adhesion and growth rate of MC3T3-E1 cells in vitro were increased in parallel with an increase of gel stiffness. In contrast, those of H9C2 cells were decreased. This approach to control the mechanical properties of polymer scaffolds depending on the cell types may find useful applications in the tissue engineering.

• Journal of Digital Convergence
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• v.19 no.1
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• pp.23-28
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• 2021

This research emphasized that the importance of ERG elements such as existence needs, relatedness needs, and growth needs. Moreover, it focused on verifying the effects of these three elements on organizational attachment through person job fit. In addition, the mediating role of person job fit was clearly identified as a key variable that can lead to organizational attachment. To verify this, an empirical analysis was conducted on workers engaged in state-owned company, service, manufacturing, and distribution industries in Korea. Through empirical analysis, it was found that all three elements of ERG improve person job fit. Furthermore, person job fit was found to increase the level of organizational attachment. Thus, it was found that person job fit played a partial mediating role in the relationship between the three elements of ERG and organizational attachment. This research also identified which element has the strongest influence on person job fit. Through these results, practical implications were presented and future research directions were discussed.

• Survey Research
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• v.6 no.2
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• pp.75-101
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• 2005

This study introduces and analyzes the data from Directory of Korean NGOs, which was published in 1997 and again in 200, to conduct a quantitative research on the growth of civic organization in South Korea. This paper focus on the information on membership size and founding year which are essential indicators for the growth of organizations. Missing rates on those two indicators are checked to evaluate the quality of data. We examine the changes in membership size between the two time periods, 1996 and 1999. It shows that there is a considerable decrease in the membership size for civic and advocary organizations that are oriented to national issues. It suggests the competition among the organizations over limited resources, which is consistent with an assumption of ecological theory of organization on non-linear growth pattern. Using founding year data from 1945 to 1996, we estimate pseudo growth curves of civic organizations based on logistic growth curve model to discuss different growth patterns of organizations across areas of activities.

• Proceedings of the Korean Society of Computer Information Conference
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• 2010.07a
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• pp.381-384
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• 2010

이 연구에서는 민간부문에서 선행되어진 조직학습에 관한 연구들을 고찰하여 경찰공무원의 조직학습에 대한 전략모형을 정립하고 그 실천적 과제를 도출하고자 하였다. 조직학습은 개인이나 조직 내 특정집단이 자신이나 다른 조직으로부터 지식창출, 지식공유, 지식저장, 지시 폐기하는 순환과정을 통해서 일어난다고 하였다. 특히 경찰조직에서의 조직학습은 외부 환경변화에 대한 변동대응능력 확보와 경찰조직의 내적인 성장발전능력을 재고시킬 수 있는 효과를 얻을 수 있다.

• Korean Journal of Materials Research
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• v.4 no.1
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• pp.97-106
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• 1994

The dependence of the electrical resistivity on the eutectic composition and growth rates was investigated in the unidirectionally solidified Sb-InSb and Sn-Bi eutectic alloy systems, which were generally classified into the groups of f-f and nf-f eutectic system. Sb-InSb alloys containing 26-34wt.% In and Sn-Bi alloys containing 53-65wt.%Bi were prepared in vacuum sealed in a silica tube, and then these were unidirectionally solidified. Electrical resistivity of the specimens prepared by cutting the crystal section in parallel with the transverse direction and by cutting in longitudinal direction was measured. As the growth rate increased, the Sb-InSb and Sn-Bi eutectic alloys showed that the resistivity of longitudinal to the growth direction was increased but that of transverse to the growth direction was decreased. In the case of Sb-InSb eutectic alloy, increas~ng the phase boundary area and decreasing the fiber directionallity caused to increase the $p \; \parallel$ , while increasing the phase boundary area increased the $p \; \\perp$ As expected, the eutectic microstructure could be analysed well in terms of electrical resistivity.

• Management & Information Systems Review
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• v.31 no.4
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• pp.237-260
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• 2012

Purposes of this paper are focused on researching that employees in small and medium-sized construction company embraced green growth policy by Korean government's strong will and they have try to improve it to take advantage of strengths. Specifically, the purpose of this study includes: Firstly, to examine the effects of employee's cognition of green growth policy and their organizational commitment. Secondly, to examine the mediating and moderating effect of the policy trust and company trust between employee's cognition of green growth policy and organizational commitment. In addition, th examine the facilitating effect of employee's self-efficacy between company trust and organizational commitment. In order to verify the relationship, moderating and mediating effects, data were collected from 168 individuals in 19 small and medium sized company to test theoretical model and its hypotheses. Findings are as followed: first, the relationship between the cognition of green growth policy and organizational commitment is positively related. Second, the employee's company trust played as a partial mediator and moderator on the relationship between cognition of green growth policy and organizational commitment. Finally, employee's self-efficacy also played as a partial mediator on the relationship between company trust and organizational commitment. This study contributes to deepen our understanding of employee's organizational commitment by suggesting an alternative theoretical model regarding how the cognition of green growth policy and organizational commitment work to relate employee's company trust, and how the company trust and organizational commitment work to facilitate employee's self-efficacy. These results reveal that the study contributed to combining variables of employee's cognition of green growth policy, company trust, self-efficacy and organizational commitment, and expanded it.

• Proceedings of the Korean Society of Developmental Biology Conference
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• 2003.10a
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• pp.94-94
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• 2003

Rotavirus는 유아나 어린아이들에게 가장 일반적으로 나타나는 심한 위장염의 원인자이며 설사로 인한 심한 탈수 증세를 일으켜 급속히 성장하는 유아의 균형적인 영양 공급을 방해함으로써 유아들의 발육과 성장 그리고 심하면 생명에 커다란 영향을 미치게 된다. 한편 모유로 키운 유아들은 설사병의 낮은 발병율과 연관이 있었다. 특히 모유의 뮤신 복합체는 rotavirus에 특이적으로 결합하여 항 바이러스활동을 보여주는 것으로 나타났다. 이러한 배경에서 본 연구는 human breast tissue로부터 lactadherin의 cloning 및 sequence 분석을 통하여 유전자의 다양성을 조사하기로 하였다. 한국 여성 9명의 유두 근처 조직에서 lactadherin을 cloning하여 그 sequence를 보고 된 서양여성의 염기서열과 비교 분석결과 여러 곳에서 single nucleotide variation이 발견되었고 본 연구에서 클론한 lactadherin(31bp-1518bp)의 염기서열과 보고된 서양여성 lactadherin gene의 SNP와 비교하였을 때 8개의 SNP중 3부분만이 일치한다는 것을 확인하였다. 또한 같은 조직중 정상 조직과 암 조직 부분에서 각각 lactadherin을 클론하여 염기서열을 비교 분석하였는데 정상 조직에서 2곳의 silent mutation있었고 암조직에서 2곳의 mutation과 1곳의 silent mutation을 발견하였으며 전체 적으로 정상조직과 암 조직 부분에서 lactadherin을 clone하여 염기서열을 분석해본 결과 암조직일수록 유전자의 변이 비율이 높다는 것을 알 수 있었다. 그리고 동일한 염기서열 상에서 많은 변이가 일어났는데 286dp(A->C), 1418dp(G->C)은 mutation이었고 327dp (A->G), 454(C->T)은 silent mutation이었다. 그 외 DNA상에서 여러 부근에 변이가 존재하였는데 이 결과로 보아 coding region에 위치한 cSNP 중 amino acid 변화를 일으켜 protein structure 또는 function에 영향을 줄 수 있는 non-synonymous cSNP 일 것으로 예상되어지며 natural selection의 영향을 받고 있음을 암시하고 있다. 본 연구에서 관찰되어진 각각의 염기 서열의 변이는 한국 사람이 가지는 lactadherin gene의 cSNP의 일부라고 판단하였다.

• Proceedings of the KWS Conference
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• 2010.05a
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• pp.19-19
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• 2010

Mo 변화에 따른 Cr-Mo 강의 미세조직 및 물성병화를 알아보기 위해 새로 디자인된 용접봉을 사용하여 Flux cored arc welding(FCAW) 공정으로 용접하였다. 또한 고온에서의 용접부 물성을 알아보기 위하여 각각의 시편을 $400^{\circ}C$, $500^{\circ}C$, $600^{\circ}C$, $700^{\circ}C$에서 24시간 동안 열처리 하였다. 용접부의 미세조직은 미세한 베이나이트 및 침상 페라이트로 구성되었으며 Mo의 함량이 높아질수록 베이나이트 조직이 증가하여 경도 및 강도가 증가하였다. 높은 항복강도와 인장강도를 가지며 연신율이 매우 낮음을 관찰하였다. 열처리후의 미세조직은 $400^{\circ}C$, $500^{\circ}C$는 템퍼드 베이나이트 조직이 나왔으나 $600^{\circ}C$에서 베이나이트 조직이 성장하였다. $700^{\circ}C$ 로 갈수록 베이나이트가 감소하고 페라이트로 미세조직이 변태 하였으며 탄화물의 석출 및 성장이 관찰되었다. 이로 인하여 경도값이 $400^{\circ}C$, $;500^{\circ}C$ 에서 증가하였고 $600^{\circ}C$는 소폭 감소하였으며 $700^{\circ}C$의 경우 완전 페라이트 조직의 형성으로 경도가 크게 감소하고 Mo 함량에 따른 경도 차이 또한 보이지 않았다.