• 한국조경학회지
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• 제20권2호
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• pp.90-105
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• 1992

the purpose of this study is to suggest objective basic daa for park management proposal through the quantitative analysis of users' behaviours and satisfaction for the actual conditions of management in Chonju neiborhood parks. For this, users' behaviors and socio-ecnomic characteristics have been anlyzed. Specificaly, it atempts to investigate users' anticipation and degree of satisfaction applied Expectancy Theory by Likert scale. And users' satisfaction for the actual conditions of management had been analyzed by using the multiple regression. Results of this study can be summarized as follow; From the aspect of utilization reality, the male usage was slightly higher than female usage, and the usage rate among the young and students such as high school students or university students also appeared slightly higher than the norm. Due to the fact, subject park had been neighborhood parks, walking usage was predominant, and the length of stay to be less than an hour. Generally, the values of users' post occupancy evaluation were lower than those of anticipated, in well known parks. In landscape satisfaction level, the parks with harmonious visual element had high landscape evaluation, and each category showed diversity depending on the park. Seasonableness, formation of physical elements, visual uniqueness, cozy atmosphere appeared as main explicatory variables having positive effects on the satisfaction level for the landscape. According to the multiple regression analysis, the major variables to the satisfaction for the actual condition of vegetation managements were harmony with facilities, recovery of artificial injury. In the park facilities and operation, the major variables related to the satisfaction were conditions of management of rest equip, facilities and guidance of use, observe the rules, respectively.

• 지식경영연구
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• 제10권2호
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• pp.85-103
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• 2009

Web 2.0, characterized as openness, sharing, and participation, has enabled Internet users to easily generate a variety of contents, and to share them through Web 2.0 services. Knowledge search service (KSS) is positioning itself as one of typical Web 2.0 services. Yet, few studies have sharpened our understanding of users' knowledge sharing behavior in the KSS environment. In order to address this knowledge void, this paper attempts to explore antecedents of their usage behavior in the KSS environment. Typically, they utilize stored knowledge and share their knowledge simultaneously. Considering this characteristic, our study regards service usage intention and knowledge sharing intention as final dependent variables. This study advances a research model based on Bhattacherjee's expectation-confirmation model, which is expanded by incorporating trust belief. Because of the openness of KSS, trust belief is believed to play a critical role in forming users' service usage intention and knowledge sharing intention. Furthermore, this study examines the difference of the antecedents' effects in terms of users' gender. We collected data from 275 respondents who have experience in using KSS. PLS (partial least squares) was employed for the analysis of the data. Analysis results confirm the important role of user satisfaction and trust belief in the formation of users' service usage intention and knowledge sharing intention. More importantly, trust belief has a more salient effect on knowledge service usage intention than user satisfaction. This study also shows the moderating role of users' gender. Finally, this paper provides managerial guidance on strategic planning aimed at improving users' service usage intention and knowledge sharing intention in the KSS environment.

• 대한치과보철학회지
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• 제46권3호
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• pp.227-237
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• 2008

STATEMENT OF PROBLEM: Zirconium oxide can be a substitute to titanium as implant materials to solve the esthetic problems of dark color in the gingival portion of implant restorations. PURPOSE: This study was performed to define attachment and growth behavior of osteoblast- like cells cultured on grooved surfaces of zirconium oxide and evaluate the genetic effect of zirconium oxide surfaces using the reverse transcriptase-polymerase chain reaction (RT-PCR). MATERIAL AND METHODS: MC3T3-E1 cells were cultured on (1) commercially pure titanium discs with smooth surface (T group), (2) yttrium-stabilized tetragonal zirconia polycrystal (Y-TZP) with machined surface (ZS group), and (3) Y-TZP with $100{\mu}m$ grooves (ZG group). Cell proliferation activity was evaluated through MTT assay and cell morphology was examined by SEM. The mRNA expression of Runx2, alkaline phosphatase, osteocalcin, TGF-${\beta}1$, IGF-1, G3PDH in E1 cells were evaluated by RT-PCR. RESULTS: From the MTT assay, after 48 hours of adhesion of MC3T3-E1 cells, the mean optical density value of T group and ZG group significantly increased compared to the ZS group. SEM images of osteoblast-like cells showed that significantly more cells were observed to attach to the grooves and appeared to follow the direction of the grooves. After 24 hours of cell adhesion, more spreading and flattening of cells with active filopodia formation occurred. Results of RT-PCR suggest that T group, ZS group, and ZG group showed comparable osteoblast-specific gene expression after 24 hours of cell incubation. CONCLUSION: Surface topography and material of implants can play an important role in expression of osteoblast phenotype markers. Zirconia ceramic showed comparable biological responses of osteoblast-like cells with titanium during a short-time cell culture period. Also, grooves influence cell spreading and guide the cells to be aligned within surface grooves.

• 한국융합학회논문지
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• 제9권10호
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• pp.407-414
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• 2018

본 연구는 중학교 2학년 남학생의 문제행동에 미치는 영향을 주는 요인을 확인하고자 시도되었다. 연구대상은 J도 Y시에 위치한 중학교의 중학생 116명이었으며, 연구도구로는 일반적 특성과 한국형 소아우울척도, 학업 스트레스 검사, 청소년 문제행동 질문지를 포함한 구조화된 설문지가 사용되었다. 자료수집은 17년 9월부터 10월까지 이루어졌으며, 자료분석을 위해 기술통계, independent t-test, one-way ANOVA, Pearson correlation coefficient, 그리고 multiple regression이 사용되었다. 본 연구결과 중학교 2학년 남학생의 문제행동에 대한 주요 예측요인은 성적, 부모와의 관계, 친구관계임이 확인되었다. 이는 중학교 2학년 남학생들의 문제행동과 관련하여 관계적인 측면의 중요성을 의미하는 것으로, 따라서 본 연구는 청소년의 건강한 인간관계의 경험 및 형성을 위한 지도방안, 교육방침, 프로그램 개발 등의 필요성을 제시하고자 한다.

• 대한한방종양학회지
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• 제9권1호
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• pp.53-63
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• 2003

This study was analyzed the effects of blood-activating and stasis-eliminating herbs on anti-tumor and hematogenic metastasis. The metastasis and recurrence of tumor was the basis of yudok(yudu) on remained tumor cell and stagnation of blood, thermotoxo, phlegm, asthenia of healthy enerngy, stagnation of vital energy. Malignant tumor is caused by carcinogen and go through the progress of initiation, promotion, progression, it is closely related with Eohyul$(y{\grave{u}}xi {\breve{e}})$. Symptoms of blood stasis disease are purplish tongue, mass, fixed stabbing pain, ecchymosis of nail, hypodermic petechia, dermal thesaurismosis, melena, ecchymoma, disturbance of circulation. Effects on the therapy of activating blood circulation and congestion are anti-tumor, anti-coagulation, anti-hemolysis, anti-solution, anti-inflammation, anti-infection, control of blood circulations, control of connective tissue metabolism and control of immunity. They can directly kill the cancer cells entering the blood circulation, inhibit the formation of tumor embody and reduce the blood hyperviscosity. It is suggested that these herbs can be used to prevent and treat blood metastasis of cancer under the guidance of syndrome differentiation.

• 한국생활과학회지
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• 제5권2호
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• pp.37-52
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• 1996

The purpose of this study was to explore the nature of parent education programs for fathers with children aged 1 through 5 year-old. One-Hundred forty-four fathers were answered using questionaire designed to elicit their perception of fathering, the details of domain parent education, and parent education program. Data were analyzed quantitatively and qualitatively to determine the contents of parent education program as perceived by the fathers. The results of this study were as follows; 1. Fathers perceived about parent education as 'The training of living behavior', 'The education about essential method of living manners and the guidance for children.' Also, fathers commented some difficult points of raising children as; 'children' sickness', 'Parents' permission or control', and 'Childrens' stubborness'. Many fathers pointed their shortages; 'to be a model of habit and behavior', 'Lacking of enough experience and imagination to their children', and 'Limiting parent's patience to their children'. 2. On the domain of parent education, six subscales of requisite degree was very high. The highest requisite domains like three questions of 34 subordinate question was; 'to encourage their children their children', knowledge about how to develop children' emotions', 'knowledge of their influence to their children' humanity'. 3. Fathers answered that a parent education was needed in infant period. They choose suitable time and place, from p.m.6 to p.m. 9 on a day and once in a week in the kindergarten. Also, the contents of parent education program were needed in order as follows; 'Communication method with a child', 'Formation of living behavior'. Moreover, 77.6% of fathers wanted to participate in the parent education program.

• 한국문헌정보학회지
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• 제43권1호
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• pp.161-187
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• 2009

오늘날은 자신에게 필요한 지식정보를 적절하게 취사선택하여 읽고 이것을 자기 것으로 만들 수 있는 능력이 요구되는 지식정보화 사회이다. 정보에 능동적으로 대처할 수 있는 능력은 창의적 비판적 사고와 자기주도적 학습을 바탕으로 한 독서지도에 의해 이루어진다. 이 연구의 목적은 청소년기 학생들의 독서태도를 긍정적으로 변화시키고 자아개념의 긍정적인 형성에 기여할 수 있는 주제중심 독서지도 방법을 제시하는 데 있다. 이를 위해 독서 전과 독서 후 검사를 실시하였다. 그 결과 주제중심 독서지도는 학생들의 독서태도를 긍정적으로 변화케 하였으며, 자아개념 형성과 학생들의 자기주도적 학습력 향상에 기여하였다.

• 대한소아치과학회지
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• 제31권4호
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• pp.598-604
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• 2004

하악 제 1대구치 매복의 발생 빈도는 전체 인구의 0.01%로 드물게 나타난다. 매복의 원인으로는 맹출 공간의 부족, 과잉치, 치성 종양이나 낭과 같은 맹출로상의 장애물, 유전적 요인, 내분비 질환, 외상 등이 있다. 하악 제 1대구치의 매복으로 인해 하안면 고경의 감소, 낭의 형성, 치관 주위염, 인접치의 치근 흡수, 부정 교합 등의 부작용이 생길 수 있으며, 치료 방법으로는 외과적 노출술, 교정적 견인, 외과적 재위치술, 발거 등이 있다. 다음의 두 증례는 하악 제 1대구치의 미맹출을 주소로 내원한 환아에게 외과적 노출술을 시행하여 원심 경사 매복된 하악 제 1대구치의 자발적 맹출을 유도한 증례들이다.

• 대한소아치과학회지
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• 제32권3호
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• pp.543-549
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• 2005

상악 견치는 가장 긴 치근을 가지며 저작기능과 함께 하악의 측방운동을 유도하고 심미적으로도 치열궁의 구각부위에 위치하여 교합관계의 조화와 대칭을 유지하는 등의 중요한 기능을 수행한다. 상악 견치는 발육기간이 가장 길며 형성되어 맹출하기까지 복잡한 경로를 갖기 때문에 다른 치아보다 매복의 빈도가 높다. 이러한 매복치를 치료하기 위해 임상의는 관찰을 하거나 외과적 노출과 교정적 견인, 자가치아이식, 발치 등 다양한 치료방법을 고려할 수 있다. 외과적 노출과 교정치료는 견치를 교합선상에 배치할 수 있기 때문에 가장 이상적인 접근으로 생각할 수 있다. 본 증례 보고는 구개측으로 매복된 상악 견치를 외과적 노출과 교정적 치아이동을 통해 기능적, 심미적으로 양호한 결과를 얻었다.

• The Korean Journal of Physiology and Pharmacology
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• 제12권5호
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• pp.225-230
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• 2008

Netrins are secreted molecules and involved in axon guidance, cell migration and tumor development. Recent studies revealed that netrins perform novel functions in such processes as epithelial development and angiogenesis without operating through the classical netrin receptors, DCC (Deleted in Colorectal Cancer) and Unc5h. In the present study, we investigated the roles of netrin-1 and its receptors in cell spreading of human glioblastoma cells, and found that netrin-1 haptotactically enhanced fibronectin-induced cell spreading and focal adhesion formation in U373 glioblastoma cells. Netrin-1 binding to the U373 cell membrane was blocked by an antibody against ${\alpha}v$ integrin subunit, but not by an anti-DCC or anti-Unc5h antibody. In addition, enhancement of the fibronectin response by netrin-1 was abrogated by a function blocking antibody against integrin ${\alpha}v{\beta}3$. Since the ${\alpha}v$ subunit of the integrin family plays an important role in the pathophysiological aspects of cell migration, including tumor angiogenesis and metastasis, our data provide important insight into the molecular mechanism of netrin function.