• The korean journal of orthodontics
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• v.30 no.5 s.82
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• pp.521-533
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• 2000

This study was investigated to evaluate the morphologic characteristics of openbite and deep bite in Class I malocclusion patients and to find skeletodental factors which contributed to vertical discrepancy in Class I malocclusion. The subjects were consisted of 40 control subjects (male 20, female 20) and 40 Class I openbite patients and 40 Class I deep bite patients. Lateral cephalograms in centric occlusion were taken, traced and digitized lot each subjects. The computerized statistical analysis were carried out with SPSS program. The results were as follows. 1. The pattern of vortical discrepancy in Class I malocclusion is mainly influenced by the skeletodental factors under palatal plane. 2. In openbite group, vortical discrepancy is prominent on anterior lower face and is closely related with skeletal factors such as mandibular form and inclination. 3. In deep bite group, dental factors such as ewe of Spee, vertical height of maxillary molar and skeletal factor such as articular angle were contributed to the vertical discrepancy. 4. The multiple regression analysis showed that overbite in Class I molar relationship was determined mainly by dental factors such as lower incisor to occlusal plane angle, curve of Spee, interincisal angle, and ODI.

• Journal of the Korea Convergence Society
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• v.8 no.12
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• pp.265-274
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• 2017

This paper examines the problems of big data analysis education and suggests ways to solve them. Big data is a trend that the characteristic of big data is evolving from V3 to V5. For this reason, big data analysis education must take V5 into account. Because increased uncertainty can increase the risk of data analysis, internal and external structured/semi-structured data as well as disturbance factors should be analyzed to improve the reliability of the data. And when using opinion mining, error that is easy to perceive is variability and veracity. The veracity of the data can be increased when data analysis is performed against uncertain situations created by various variables and options. It is the node analysis of the textom(텍스톰) and NodeXL that students and researchers mainly use in the analysis of the association network. Social network analysis should be able to get meaningful results and predict future by analyzing the current situation based on dark data gained.

• Journal of Korean Home Economics Education Association
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• v.15 no.4
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• pp.67-86
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• 2003

The purpose of this study was to understand on management and problems in the instruction of the subject of Technology and Home Economics, and to suggest the effective implementation schemes under 7th national curriculum guideline. The major results of this study were as follows. First, the teachers perceived the first reason why the subject of Technology and Home economics is being more unpopular is because the subject becomes not to include in the subjects of the national examinations for the Universities. Second. the teachers regarded the main problem in the present instruction of the subject of Technology and Home economics under 7th curriculum as the incorporation of the subject between Technology and Home economics, namely, no relation and organization with two majors. Third, which the teachers regarded as important tasks for effective management of the subject of Technology and Home economics were to lesser the extra charges except instruction related work of the teachers, and to increase the supply of the teachers itself.

• Proceedings of the Korean Aquaculture Society Conference
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• 2004.05a
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• pp.425-426
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• 2004

• Proceedings of the Zoological Society Korea Conference
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• 1999.10b
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• pp.123.2-123
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• 1999

• International Journal of Highway Engineering
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• v.13 no.1
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• pp.1-11
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• 2011

This study is aimed at suggesting a plan for creating a landscape environment by grasping a landscape preference according to the change of middle span and sag ratio which is a consideration factor when designing the suspension bridge representing long-span bridges and image property of the bridge while applying SD method to a relation between landscape preference and image factor, and a connection of design element with image factor. An analysis on landscape preference about the bridge landscape showed from what the longer the length of middle span, the extent of sag ratio of preference decreased, the longer the middle span low sag ratio was preferred and the higher the landscape preference became. In landscape preference and image factor, the attribute of sag ratio with high landscape preference was all positively correlated with "stability", "plasticity", and "aesthetic" but an influence of "plasticity" was insignificant. In the relation between design element and image factor, the factor of middle span and sag ratio was more related to the factor of "stability" and the lower the sag ratio and the longer the middle span, the higher the "stability" was rated. This result showed the image property of "plasticity" was insignificant among the one of preference in landscape and to highlight the one of "plasticity" a complementary experiment was done with a change in balance and symmetry elements not in proportional element of middle span and sag ratio. The result showed the image property of "plasticity" was more highlighted in the suspension bridge of 3-tower and different bilateral symmetry at sag, and when designing the landscape of suspension bridge later on, the elements of balance and symmetry as well as the proportional element should be considered and reflected in the design.

• Korean Journal of Environment and Ecology
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• v.15 no.2
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• pp.186-192
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• 2001

본 연구는 전라남도 광양만의 6개 임해매립지 식재지반의 토양환경 특성을 조사분석하였다. 토심이 깊어짐에 따른 토양성질의 수직적 특성은 각 식재지반별로 다르게 나타났다. 토양성질의 수직적 특성에 영향을 미치는 요인은 개토와 준설토의 이질서, 토양의 물리. 화학성의 교란, 지반하부에 잔존하는 염류의 이동, 유기물의 이동과 강우나 가뭄 등이었다. 수목생 상 유리한 식재지반은 식재지반의 높이가 낮은 곳보다 높은 성토지역이었으며, 이것은 토양의 물리. 화학적 교란과 지하부의 염류로부터 안전성이 높기때문이었다. 조경식물의 생육상 불리한 토양성질들은 토성의 이질서, 토양의 경화, 알칼리성 염류토양, 높은 ECe, Na, K. 저농도의 Ca, Mg, T-C등이었으며, 이러한 토양성질들은 표토보다는 지하의 근권부에 주로 분포하여 있었다. 따라서 임해매립지 식재지반 조성시에는 토양의 성질이 교란되지 않은 방법이 모색되어야 하며, 조경수목의 생육에 관련된 토양환경조사는 지하근권부 이하까지 정밀하게 조사. 분석하여야 할 것으로 사료되었다. 사료되었다.

• Culinary science and hospitality research
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• v.17 no.2
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• pp.18-34
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• 2011

This research was conducted to analyze structural relationships comparatively between job stress, job burnout and turnover intention that school dietitians, school nutrition teachers and school foodservice employees have. The target group is school dietitians and nutrition teachers who work in 180 elementary, middle and high schools and foodservice employees in 50 schools. The survey is limited to the schools which operate school meals directly or indirectly in Seoul and Gyeonggi province. As a result, job demand and lack of rewards were found the most significant factors in the dimensions of job stress. The quantitative expansion of school meals is important; however, it is necessary to reduce stress in the work environment for dietitians, nutrition teachers and employees in school foodservices to perform their duties with dignity and satisfaction.

• The Journal of Korean Association of Computer Education
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• v.13 no.6
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• pp.23-34
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• 2010

The PCK of teachers about informatics subject, which is viewed as one of required subjects in today's information society, is linked to what and how to teach, and that is very significant in terms of academic education. However, there are currently no efforts to develop items geared toward evaluating the PCK of teachers about informatics subject or to make a factor analysis of those items, though the importance of that subject in information society has been discussed. The purpose of this study was to develop and validate an instrument to size up the PCK of preservice elementary teachers about informatics subject. The finalized instrument consisted of 39 items regarding five factors that involved knowledge of curriculum, knowledge of expression, knowledge of content, knowledge of evaluation and knowledge of teaching methods.

• The Korean Journal of Financial Management
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• v.11 no.1
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• pp.97-122
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• 1994

시장균형상태(市場均衡狀態)의 조건(條件)하에서 주식의 기대수익률을 설명할 수 있는 가격결정(價格決定) 요인(要因)이 무엇을 의미하는가를 규명하는 일은 증권시장을 설명하기 위한 중요한 과제이다. 본 논문의 연구 목적은 재정가격결정모형(栽定價格決定模型)을 적용하여 주식수익률에 대한 요인(要因)을 분석(分析)하고, 최적 포트폴리오 구성 주식수와 유의적인 가격결정 요인 및 이들이 설명하는 경제적(經濟的) 의미(意味)를 찾는데 있다. 특히 ML방식의 요인분석 과정에서 헤이우드 상황(狀況)(Heywood case)을 확인하고 정밀한 요인(要因)의 추정을 위하여 이를 제거하였으며, 헤이우드 상황(狀況)이 미치는 영향을 분석하였다. 실증분석(實證分析) 결과(結果) 요인분석에서 최적 포트폴리오 구성 주식수는 35개이며, 이때의 가격결정(價格決定) 요인수(要因數)는 $2{\sim}3$개 정도이다. 그리고 주식의 가격결정요인으로 일관성 있게 설명하는 경제변수(經濟變數)로는 종합주가지수, 산업생산성지수, 실업률지수, 기업소규모지수 등이다. 그리고 Heywood case 발생 표본은 균형모형 설정에 교란요인이 됨을 검증하였다.