• The Journal of Korean Academy of Prosthodontics
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• v.30 no.3
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• pp.401-410
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• 1992

The purpose of this study was to investigate the dimensional changes and surface morphology of dentures processed by various polymerization conditions. The measurements were done by taking radiograph and using vernier calipers and each specimen was observed on scanning electron microscope. Results obtained were as follows. 1. The difference of dimensional stability was not recognized between various polymerization conditions(heat-cured resin, pour-type resin, microwave-cured resin, and injection molding resin). 2. There were expansion and shrinkage in the occlusal dimension, shrinkage in the frontal dimension, and expansion in the lateral dimension. 3. Scanning electron microscope pictures of heat-cured resin showed dense and regular surface morphology. 4. Microwave-cured resin surface appeared more regular and smooth than pour-type resin but less dense and more irregular than heat-cured resin. 5. Scanning electron microscope pictures of pour-type resin with the lowest dimensional change showed the most irregular surface morphology.

• Annual Conference of KIPS
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• 2014.11a
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• pp.33-36
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• 2014

철도로 인한 소음 문제는 최근 국민의 정온한 환경에 대한 권리의식 증대와 삶의 질에 대한 높은 관심으로 철도 소음에 대한 민원이 급증하여 지역 갈등을 초래하고 막대한 사회적 비용 부담으로 철도 산업을 저해하는 요소이다. 이에 따라, 철로 부근의 진동 및 소음에 대한 모니터링 시스템의 필요성이 증대되고 있으나, 레일의 조도상태 및 방진재 사양 등 철도진동소음에 영향을 주는 인자를 충분히 포함하지 못하고 있으며, 측정 및 분석 데이터의 체계적인 관리, 축적 구조를 갖지 못하는 문제가 있다. 또한, 연구기관의 인위적인 데이터 양식의 사용으로 실용적이고 개방적인 구조를 갖추지 못해 실제 엔지니어링 현장에서 활용하기 어렵다. 이에, 본 논문에서는 실제 엔지니어들이 현장에서 취득하는 정보를 체계적이고 지속가능한 형태로 데이터베이스화 하는 일체의 시스템 구축에 대해 논한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2019.01a
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• pp.459-460
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• 2019

본 논문에서는 최근 유아대상으로 무분별한 스마트폰 기기 노출 등으로 인한 피해의 심각성을 알고 유아교육에서 인터넷 윤리 및 스마트폰 기기의 올바른 사용이 제대로 이루어 질수 있도록 교육 방법을 제안하는 것이다. 제 4차 산업혁명으로 인하여 연령과 상관없이 과도하게 스마트기기에 많이 노출되고 있다. 따라서, 유아기때부터 올바른 정보 윤리 의식 및 적절한 컴퓨터 사용을 할 수 있는 교육이 이루어지며, 유아 스마트폰 증후군을 예방하여 건전하고 안전한 사이버 세상이 이루어지도록 해야 한다. 그러나 아직까지 유아교육분야에서 정보 윤리 및 스마트폰 중독에 대한 프로그램이 특강형태로 이루어지고 교재교구들이 부족하며, 다양한 활동이 개발되어지지 않고 있는 실정이다. 따라서, 본 연구는 정부차원에서 각 센터와 기관들과 잘 협업이 이루어지도록 유도하며, 전문가들에 의해 다양한 활동이 개발되고 교재교구가 제작될 수 있는 방안을 제안하고자 한다.

• Proceedings of the Korean Society for Information Management Conference
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• 2013.08a
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• pp.185-188
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• 2013

전시 중심의 단기적 활용을 벗어나 일종의 문화유산으로 시각예술 아카이브를 관리하려는 움직임이 국가단위 또는 주요 기관간 컨소시엄의 형태로 활발히 진행 중인 해외 문화선진국의 사례와는 달리 국내 시각예술계는 아카이브 기반 전시나 프로젝트의 인기를 넘어서지 못하는 단편적 접근방식으로 아직 국가차원의 종합적인 비전이나 장기적인 전략을 창출해내지 못하고 있는 것이 우리의 현실이다. 국내 디지털 인프라의 선진성에 의지한 공공기관 주도 디지털 아카이브 사업에 대한 낙관적 전망도 몇몇 기관의 디지털 아카이브 구축 및 운영 경험을 통해 그 불투명성 및 위험성이 노출된 바 있다. 새 정부 출범 이후 국가정책을 지배하고 있는 창조경제 화두를 관통하는 핵심 키워드 중의 하나로서 시각예술 콘텐츠 자산의 근간인 국내 시각예술 아카이브의 경쟁력은 전면적으로 검토될 필요가 있다.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2023.11a
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• pp.141-142
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• 2023

소규모 건설 사업장에서는 한 사람이 과도하게 많은 관리영역에 대해서 책임을 져야하므로 특정 영역에 대해 집중적인 관리가 불가능하다. 실제로 이와 같은 소규모 프로젝트는 작은 규모로 인해서 정부의 관리 통제에서 면제되고 있는 바, 이는 소규모 건설 사업장에서의 안전관리와 안전관리에 대한 의식 수준이 낮은 주된 이유 중 하나이다. 정부는 그간 전국적 사고 발생 건수를 줄이기 위해 지속적으로 노력하고 있지만 매년 백여 명이 넘는 근로자가 건설현장에서 사망하고 있다. 이는 그간의 관리 방법으로는 일정 수준의 목표를 달성하고자 함에 있어 상당한 한계가 있다는 것을 시사한다. 건설 사업장에서 발생하는 각종 안전사고는 건축물의 대형화 복잡화함에 따라 다양한 형태로 발생되며 그 중 대형건설사는 지속적인 안전관리를 통해 안전관리 수준이 향상되었고 상대적으로 소규모 건설 사업장과는 안전수준의 격차는 커지고 있다. 따라서 본 연구에서는 상대적으로 안전 관리가 미흡하고 전체사고의 반 이상을 차자하는 소규모 건설현장의 문제점을 파악하고 이에 대한 개선방안을 제시하고자 한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.1
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• pp.288-293
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• 2011

This study was conducted to investigate the elementary school students' consciousness of safety, activities to prevent their accidents and factors causing such accidents. For this aim, a research was conducted from Nov. 19 through Dec. 22, 2007 by means of questionnaires distributed to 800 students enrolled in the 5th and 6th grades of 4 elementary schools in a urban-rural combined city. Out of the questionnaires distributed, 785 were collected and put to analysis by using SPSS 13.0 program to determine t-test, ANOVA, logistic regression, etc. 1. The maximum scores of safety consciousness revealing relatively high level of safety consciousness. There was, however, statistically significant difference by grade, type of residence, school life and academic achievements. In detail, 5th graders featured higher level of safety consciousness and those who live in apartments, lead a pleasant life at school and get better academic scores tended to keep higher level of safety consciousness. 2. The subjects of the high scored of activities to prevent accidents, with a statistically significant difference by gender, grade and individual personality. Females, 5th graders and active students were found to be more conscious of preventive activities for accidents. 3. In general, 6th graders and active students turned out to have experienced more accidents. 4. The main factors exerting influence on occurrence of accidents on the part of elementary school students are known to be preventive actions and consciousness of traffic safety in the category of safety consciousness. The significant variable in preventive actions was preventive actions of traffic accidents, burns and intoxication by category of accidents, but individual personality by category of general characters. Sixth graders and male students experienced more accidents, without significantly significant difference, though. As a result, From the above findings, prevention of safety accidents is found to be very important for elementary school students. It is therefore suggested that schools as well as homes should continue to conduct practical education to prevent accidents with priority placed on familiarizing students with preventive activities in daily life in consideration of their personal characters.

• (The)Study of the Eastern Classic
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• no.56
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• pp.267-295
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• 2014

The purpose of this paper was to introduce the material status of women's epistolary literature published in modern study materials for writing letters in Chinese in 1920~30s and analyze gender consciousness shown in them. To this end, five kinds of representative modern study materials for writing letters in Chinese in 1920~30s were selected and 55 women's letters published in them were summarized. Through this, it was pointed out that the subjects of women's epistolary literature are mainly 'males' of families and the form of 'reply.' This implies that the authors of modern study materials for writing letters in Chinese recognized women's Chinese letters as a secondary means to prepare for inevitable communication with men rather than the leading medium of communication. The first aspect of gender consciousness shown in women's epistolary in modern study materials for writing letters in Chinese is to reaffirm the traditional gender order by calling and resetting women as the position and role in the family. The second aspect of gender consciousness is that female education materials which seemed to reflect the modern gender order are actually mentioned under the very skeptical view. The third characteristic aspect of gender consciousness is that the motif of 'discipline about economic activity' is only noticeable in women's epistolary published in modern study materials for writing letters. This setting was regarded as a means that the authors of modern study materials for writing letters in Chinese transferred the responsibilities of maintaining livelihood and managing household to women. Women's epistolary in modern study materials for writing letters in Chinese is the material which is noticeable in terms of showing the possibility of female Chinese Writing in modern times but according to the analysis of this paper, it is the text showing female form and women's writing judged within thoroughly male-centered imagination. That is, women's epistle text has a significance that allows us to read conservative reentry of modern study materials for writing letters in Chinese more clearly.

• Journal of Navigation and Port Research
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• v.37 no.1
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• pp.23-28
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• 2013

The ocean education in Korea is very weak even though Korea is the $5^{th}$ strongest country in maritime fields. This research figured out the ocean education status of Korea and some educationally advanced foreign countries, and developed modular ocean education programs to handle ocean education systematically and efficiently. Especially, the research presented the modular ocean education programs which are focused on Busan metropolitan city. Also, this suggested the ocean education courses which are composed of the correlated education modules to enhance the effectiveness and efficiency of the ocean education. These results are expected to be important motives to make the foundation for follow-up business of ocean education as well as contribute to foster ocean consciousness and revitalize the ocean education by expanding the ocean education from Busan to whole country.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.10
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• pp.4869-4876
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• 2012

This study was performed to propose a improvement guide for the region of Seosan located at the north-west part of Chungnam province. Thus, this study recognizing that urban revitalization design of Seosan should be established based on inheritance of regional history and traditional culture. This study was processed with following procedures and methods. First, this study drew the recent trends and effective ways as proportion system of urban revitalization design through collecting and analyzing literatures. Second, performed to the survey of the consciousness consider urban environmental settlement of residents in Seosan using a statistical method. Third, carried out case studies as urban revitalization design of central area in Seosan.

• Journal of Dental Rehabilitation and Applied Science
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• v.31 no.1
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• pp.45-49
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• 2015

In this clinical report, a simple and convenient conversion of a fractured metal-ceramic surveyed crown into a complete contour zirconia surveyed crown by using computer-aided design and computer-aided manufacturing technology for an existing partial removable dental prosthesis is described. The duplication of the original contours, morphology, and the rest seat of the existing metal-ceramic surveyed crown, into a complete contour zirconia surveyed crown under anticancer treatments were reported.