• The Journal of the Korea Contents Association
• /
• v.21 no.8
• /
• pp.258-270
• /
• 2021

This study aimed to investigate the effects of the virtual reality simulation for malocclusion examination for dental education. A 4-step modeling procedure was applied to develop a tooth model with a realistic level in order to be held and observed in detail. Eighty-six participants used HMDs to examine the developed virtual dental simulation to identify their perception according to expertise levels. The independent variable, expertise group, included three levels: 29 juniors, 29 seniors, and 28 dentists, respectively. The dependent variables, that were task-load and usability, were measured through two cases. Results showed that the junior group perceived a higher level of mental demands and embarrassment than the dentist group. It indicated that the perceived task load varies according to the expertise levels in the simulation task. However, the senior group perceived a higher level of ease of use than the dentist group. This study presented the implications for the development of virtual reality simulation in detail.

• Journal of the Korea institute for structural maintenance and inspection
• /
• v.2 no.4
• /
• pp.224-232
• /
• 1998

구조물에 손상이 발생하게 되면 동적특성이 변하게 된다. 그러므로 이와 같은 특성을 계측하여 구조물의 손상된 정도를 평가하게 되면 이를 상시감시에 활용할 수가 있다. 대표적인 손상기술들을 제작된 모형교량에 서로 다른 경계조건을 구현하여 손상도를 Simulation을 이용하여 결정하고 가장 적법한 방법과 대책을 연구했다. 모형교량은 I-DEAS의 Normal Mode Dynamic Solver를 이용하여 분석 제작되어 계측과 비교평가 되어 손상기술에 적용되었다. 24개의 가속도 감지기를 이용하여 데이터를 획득하였고, Residue법으로 모달인자를 추출하였다. 추출된 동적인자가 상시감시에 적용하도록 구조물의 손상검출기술을 제안한다

• Journal of the Korea institute for structural maintenance and inspection
• /
• v.3 no.1
• /
• pp.103-111
• /
• 1999

구조물에 손상이 발생하게 되면 동적특성이 변하게 된다. 그러므로 이와 갈은 특성을 계측하여 구조물의 손상된 정도를 평가하게 되면 이를 상시감시에 활용할 수가 있다. 대표적인 손상기술들을 제작된 모형교량에 서로 다른 경계조건을 구현하여 손상도를 Simulation을 이용하여 결정하고 가장 적법한 방법과 대책을 연구했다. 모형교량은 I-DEAS의 Normal Mode Dynamic Solver를 이용하여 분석 제작되어 계측과 비교평가 되어 손상기술에 적용되었다. 24개의 가속도 감지기를 이용하여 데이터를 획득하였고, Residue법으로 모달인자를 추출하였다. 추출된 동적인자가 상시감시에 적용하도록 구조물의 손상검출기술을 제안한다

• Journal of the Korea Institute of Information Security & Cryptology
• /
• v.25 no.3
• /
• pp.691-701
• /
• 2015

Recently, with the growing number of services using personal information, government offices' tasks have become more dependent to personal information. Various policies and systems have been made and managed for the safe use of personal information in the circumstances that inevitably require the use of personal information, but the personal information privacy incidents and their scale are on a constant increase. Thus, Korea has been implementing personal information protection management system since 2008 to examine whether public organizations observe the personal information protection act and to how well they manage the personal information, and to improve what is insufficient in the process. However, despite high scores of the outcomes of the system, questions about the effectiveness of the outcomes and about the actual manage level are being raised. Thus, this study seeks to analyze public organizations' activities to protect personal information and the effectiveness of their foundation efforts for them by using the DEA model, and to propose a new model to enhance the effectiveness of the outcomes of personal information protection management system by reflecting them into the outcomes of system, using the derived effectiveness.

• The Korean Journal of Financial Management
• /
• v.14 no.1
• /
• pp.75-105
• /
• 1997

최근 수년사이 우리나라 경제의 근간을 이루고 있는 중소기업의 부도사태가 갈수륵 확산되는 양상을 보이고 있다. 이로 인해 귀중한 경제자원이 사장되는가 하면 종업원이 실직을 당하고 부도기업과 거래해온 계열 및 하청업체들도 연쇄부도에 휩싸임으로써 연관산업은 물론 지역경제 및 국가경제에까지 큰 손실을 끼치고 있다. 따라서 어떻게 중소기업의 부도를 예방하고 그 피해를 최소화할 수 있느냐 하는 문제는 초미의 관심사로 대두됐다. 본 연구는 이같은 관점에서 중소기업부실화의 효율적인 예방대책마련에 필수적인 근거자료를 제시하는데 초점을 맞추고 있다. 이를 위해 설문조사를 실시하고 정책의 우선순위결정을 위한 통계적 모형인 AHP(analytical hierarchy process)모형을 이용해 설문조사내용을 분석한바, 부실화원인간의 계층적 구조가 파악되고 원인별 영향도가 계량화되고 있다. 이러한 연구결과는 부실화예방을 위한 정책의 우선순위결정이 가능함을 보여주는 것이다. 또 부실화연구에 새로운 접근방법을 구사한 점도 특기할만하다.

• Proceedings of the Korean Statistical Society Conference
• /
• 2002.11a
• /
• pp.299-304
• /
• 2002

본 연구에서는 자궁 내 태아의 발육지연이 주산기 사망률 및 이환율을 증가시키는 고위험 임신의 한 예로써, 태아 발육제한증과 관련한 비선형적인 자료를 통계적인 방법으로 접근하는데 초점을 두었다. 이에 정상태아와 발육제한증 태아를 판별하기 위한 분석을 실시함에 있어 신경망 이론 중 하나인 다층 퍼셉트론 모형으로 예측하고자 하였다.

• Science of Emotion and Sensibility
• /
• v.2 no.1
• /
• pp.53-60
• /
• 1999

EEG 생리신호의 분석은 국내에서도 최근에 활발하게 연구가 진행되고 있으나, 시계열을 이용한 분석법은 통계학의 전문적인 지식을 요구하고 있기 때문에 연구에 많은 어려움이 있다. 그러므로 감성과학 연구자들이 보다 쉽게 이해하고 분석할 수 있는 Tool의 개발이 절실히 요구되고 있다. 본 논문에서는 EEG 생리신호 분석을 위한 모형분석 시스템과 생리신호 분류를 위한 판별분류 시스템을 구축하였다. 이 시스템에서는 신호분석을 위한 그래프 작성, 자극 신호에 대한 모형식별 방법의 제시, 모형에 대한 추정 및 진단 기준에 따른 최적의 모형선정 방법 등을 지원한다. 또한 선정된 모형에 이해 모수를 추정하고 이를 이용하여 통계에 대한 지식이 없이도 쉽게 각 뇌파 신호들을 판별 분류할 수 있다.

• Journal of Agricultural Extension & Community Development
• /
• v.21 no.4
• /
• pp.1149-1189
• /
• 2014

Nowadays, many farmers use online management diagnosis tool developed by Rural development agency(RDA) for the purpose of self-diagnosis of their farm management. Database(DB) was created using the diagnosis results and has been used for agri-firm management consulting. However, the amount of diagnosis data in the DB has been decreasing year by year. This means that the diagnosis tool of RDA did not reach farmers' expectation. Therefore it is necessary to develop a practical consulting tool which is applicable for various types of agri-firm management. This study introduces a management diagnosis tool and consulting method based on multi-contingency organization theory and value chain model for the purpose of improving existing tools and methods. The consulting method based on multi-contingency organization theory shows the core strategy of agri-firms by two different ways such as "efficiency-oriented" direction and "effectiveness-orientated" direction. Also, this method emphasizes that the performance of firm can be achieved when subelements of firm activities follow the same direction with the orientation of core strategy. The important thing is the right firm management activity fitted to its strategic direction. Through this action, limited firm resources can be optimized. In order to make itself understand, this study shows a practical example applied by this method from actual agri-firms.

• Journal of The Korean Association For Science Education
• /
• v.36 no.4
• /
• pp.643-655
• /
• 2016

The purpose of this study is to figure out the characteristics of teacher's scaffolding that can promote the social construction of scientific models by analyzing a teacher's scaffolding that actually promoted the social construction in a real classroom context, so that we can better understand the teacher's scaffolding. For this study, a total of 32 middle school students and their science teacher in Seoul were observed and videotaped. The level of social construction were categorized in four stages. We divided the teacher's scaffolding by whether the level of social construction has changed or not, and analyzed teacher's scaffolding in each group. Teacher's scaffolding were categorized based on its object, purpose and means. The object were categorized into two types; small-group and individual. The purpose were categorized into two types; process-help and product-help. The means were coded into Diagnostic strategies(Reading, Listening, Questioning), Checking diagnosis and Intervention strategy(Instruct, Explain, Hint, Confirm). The result show that teacher's scaffolding is helpful in the social construction of scientific models when it supports small-groups more than individuals, and process-help more than product-help. It also shows that in diagnostic strategies, questioning and listening are effective. Finally, using checking diagnosis promoted interactions among students and a 'confirm' intervention strategy should be avoided because it has no positive effect on changes in the level of social construction. This study provides the features of the teacher's scaffolding that promotes social construction of scientific models in middle school classes.

• The Journal of the Korea Contents Association
• /
• v.17 no.8
• /
• pp.570-578
• /
• 2017

This study aims to develop suitable and appropriate support models for ADHD children to provide effective and efficient support for the target children. The diverse characteristics of target area, educational, social conditions, and supporting organization and delivery systems have been comprehensively considered. Domestic and overseas literature review has been performed to analyze the status of support services for ADHD children to develop the model. The FGI was adapted to identify eligibility and expectations for the qualification of ADHD children and the awareness and expectations of relevant professionals. Based on the theoretical rationale and empirical analysis results derived from these systematic procedures, suitable and appropriate support models were developed for ADHD children as a special educational subjects. The support model includes the development of individualized support programs for the needs of the entire ADHD student population, which require screening and assessment of the entire student population and requiring support for special needs. Support methods were developed in a system that supports family support, educational support, medical assistance, and medical support.