• 복식문화연구
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• 제18권6호
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• pp.1261-1273
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• 2010

The advent of various arts and remarkable development of mass media since 1980s accelerate fashion photographs' advancement. The expression of fashion through photographs can represent characteristics of ages, societies, cultures, traits of designers and techniques of photographers. In addition, that is the tool which contains economical role as a product and artistic role as photos. Therefore, this study examines hyprt-reality images in editorial fashion photographs. Hyper-reality means the reproduction which represents the reality of life more actually. Hyper-reality through photographs elevates reality of virtual things and creates the confused situation which haunts the boundary between reality and reproduction. This study classifies the hyper-reality in editorial fashion photographs into three groups by their external traits, ideal reality, collapse of reality, and restoration of reality. First, ideal reality is represented as harmony among fashion, characters, and space, causality of fashion with time and circumstances, positive will, and melting with nature. Second, collapse of reality is expressed as in harmony between fashion and situation, violence, fetishism and symbol of death. Third, restoration of reality is shown as recurrence to nature and images of utopia to express dignity of life.

• 한국환경복원기술학회지
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• 제8권1호
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• pp.100-107
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• 2005

As a result of this study, vitality of natural monuments (large trees) looks relatively good but they require continuous management. Also, the management for condition recovery and condition maintenance, and minimum measures are needed at least to avoid natural calamity. Major points induced are as follows : The first, although most of natural monument large trees showed favorable growth environment, most of them are aged and have dense twigs with requirement for weed trimming to remove complicated and unnecessary branches. In addition, as most of large trees grow alone in a large space with potential natural calamity, thus, minimum measures are required at least. Secondly, change in electric resistance in surveyed large trees was relatively favorable, however, large trees with soil covering showed high electric resistance and were found to have low vitality. As shown, this study was conducted to find out the measurement techniques of natural monuments, Basic foundation is suggested through the measurement of electric resistance, and the vitality of natural monuments; more accurate investigation will be remained for further discussion.

• 대한소아치과학회지
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• 제24권2호
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• pp.383-404
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• 1997

In this study, we tried to compare the effect of glass inserts on marginal leakage of composite resin restoration by comparing with that of several filling methods. The results obtained from this experiment were as follows ; 1. The degree of microleakage measured in glass inserts group was generally lower than that of the other groups. Statistical analysis showed significant intergroup difference between glass inserts and one complete unit, pre-polymerized composite resin ball(P<.05), but no significant difference between groups of glass inserts and increments(P>.05). 2. Scanning electron microscopic observation showed relatively large gap around resin-tooth interface in specimens restored the method of using the one complete unit and pre-polymerized composite resin ball whereas a denser and tighter was observed in increments and glass inserts group. Generally the gingival margin was shown to have better bonds than the occlusal margin in specimen of all groups. 3. In the present experiment, methods using the techniques of glass inserts and increments were evaluated to be superior to those of one complete unit, pre-polymerized composite resin ball in the aspect of microleakage. However, the result of this study could not determine the superiority of the use of glass inserts over incremental method. Besides the physical properties observed in this study, the practical aspect of clinical convenience should be considered in determining the selection of material.

• 대한치과의사협회지
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• 제16권2호통권105호
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• pp.123-128
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• 1978

Sometimes in clinic, we have found that cast crown construction is necessary to fit the existing partial denture clasp, when the abutment is involved with caries, a failing restoration, periodontal disease, or fracture. This is important not only to protect the abutment tooth from missing, but to restore retention, bracing and support for partial denture. For constructing the cast crown, several methods have been reported by many of previous authors. The number of techniques reported during the past are ideal but have uncertain results However, with more improved and practical technic developed by me, the problem becomes more successful. One method in which does not need the laboratory technecian is the wax pattern has been made in chairside waxing by doctor himself. The other in which requires the laboratory technician is to use special impression method and articulator for laboratory waxing. In one case of the reported here, we have successful results in restoring the abutment with cast crown for original denture clasp.

• 한국환경복원기술학회지
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• 제26권2호
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• pp.47-59
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• 2023

This study investigated and analyzed the effects of vegetation on the roadside slopes at the expressway construction sites in order to evaluate the vegetation recovery regarding soil type and revegetation technique. We selected two study sites with an area of 1,000 m² located in the construction sites of the Korea Expressway Corporation, named Hwado-Yangpyeong Expressway Section 3 and Saemangeum-Jeonju Expressway Section 7. The revegetation was monitored in three plot groups (earth, soft rock, and hard rock slopes), and scored based on the guideline of the Ministry of Land, Transport and Maritime Affairs. The revegatation was generally lower in the Hwado-Yangpyeong site than that of the Saemangeum-Jeonju site. The field monitoring indicated that the revegetation varied with slope aspect and environmental characteristics between plots. the Saemangeum-Jeonju site showed a high overall evaluation score, but there was a slight difference in the score for each plot. This seems to be due to the differences in geographical conditions, construction methods, and site environment between two sites. This study can provide basic information to understand the short-term effects of revegetation techniques in the roadside slopes.

• 방송공학회논문지
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• 제2권2호
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• pp.169-181
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• 1997

초고속압축률, 내용기반 부호화, 객체 단위의 계층적 구조로 대표되는 MPEG-4, 비디오의 화질 개선 기술에 관하여 논의한다. 화질 개설은 크게 두 가지로 나누어 압축과정에서 발생하는 화질 열화(degradation) 요인을 제거하고, 제한되어 있는 공간 및 시간적 해상도를 향상시키는 기술을 제안한다. 첫째 화질 열화의 제거를 위해서, 다시 MPEG-4 비디오 압축 기술을 크게 MPEG-2와 공통되는 부분과 차별되는 부분으로 나눈 후, 전자에 대해서는 이미 개발되어 있는 화질 개선을 적용하고, 후자에 대해서는 새로운 수학적 모델을 제시하여 복원이 가능하게 한다. 둘째 공간적 해상도 향상을 위해서는 다채널 영상보건(multichannel interpolation) 기법의 구현을 위한 일반화된 구조를 제안하고, 시간 해상도 향상을 위해서는 기존의 프레임률 향상 기법을 정리한다. MPEG-4 표준 제정 단계에서 매우 다양한 고려가 이루어지고 있지만, 가장 중요한 화질에 대해서는 상대적으로 제약이 많지 않기 때문에, 사용화 단계에서 화질 개선 기술의 추가가 매우 중요할 것으로 예상된다.

• 한국인터넷방송통신학회논문지
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• 제14권3호
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• pp.155-162
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• 2014

본 논문에서는 이동차량 양상 안정화를 위한 효율적인 흔들림 보정 기법을 제안한다. 제안된 흔들림 보정 기법은 입력으로 받은 영상 이미지 프레임의 색상 분리를 통한 변환 및 분리정보에 대한 누적 히스토그램을 계산하였고, 흔들리는 차량용 영상 이미지를 보정한 결과에서 색상 정보를 맞추기 위해 히스토그램 매칭을 하였다. 본 논문에서 제안된 흔들림 보정 기법은 기존 차량 영상 안정화 기술과 비교하였을 때, 휘도 및 컬러 레벨의 비교를 통해 노이즈가 가장 적고 영상의 자연스러움이 더 뛰어난 복원 결과를 얻을 수 있었다. 또한, 흔들림 보정 기법은 메모리를 사용하지 않고 실시간으로 처리를 통해 다른 방법과 비교하여 효율성을 입증하였다.

• 대한치과보철학회지
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• 제51권4호
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• pp.323-331
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• 2013

고정성 국소의치를 이용한 수복 시 보철물 자체의 심미성뿐 아니라 보철물과 조화로운 주변 연조직의 형성 또한 중요한 요소이며, 임시보철물을 이용하여 조화로운 연조직의 형태를 형성할 수 있다. 임시보철물을 통해 형성한 연조직의 형태는 적절한 형태를 갖는 최종 수복물을 제작하는데 필요한 정보를 제공할 수 있도록 최종모형으로 정확하게 복제되어야 한다. 그러나, 임시보철물 주위 연조직의 형태는 인상과정 또는 인상재의 압력 등으로 최종 모형으로의 복제가 어렵다. 따라서, 임시보철물을 이용하여 형성한 구강내의 연조직 형태를 모형으로 복제하여 연조직과 조화로운 최종 수복물을 제작하는 서로 다른 2가지 방법을 본 증례보고에서 소개한다.

• 대한치과보철학회지
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• 제33권2호
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• pp.198-209
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• 1995

In order to evaluate the fitness and the degree of rounding of porcelain margins in collarless metal cermic restorations, collarless metal ceramic restorations were fabricated with shoulder margins of 90 and 120 degress, each consisting of ten specimens, on master dies through the direct lift technique. And ten metal ceramic restorations with a shoulder 90 degrees were fabricated. All specimens were embedded in resin and sectioned longitudinally. The sections were observed under a stereomicroscope and photographed(${\times}$200). The labial marginal gap between the die and the porcelain margin were measured with a scale. The space between the porcelain margin and the die, that is formed from marginal rounding and cementation were calculated with a computer coordinating area curvimeter. The following results were obtained. 1. There was no statistical difference between the fitness of porcelain margin of collarless metal ceramic restorations and marginal fitness of metal ceramic restoration. 2. There was no statistical difference between a shoulder of 90 and 120 degrees in the fitness of porcelain margin of collarless metal ceramic resorations. 3. Collarless metal ceramic restorations with a shoulder of 90 degrees and 120 degrees showed significantly more labial marginal rounding than metal ceramic restorations. 4. There was no statistical difference between a shoulder of 90 and 120 degrees in rounding of porcelain margin of collarless metal ceramic restorations. According to the results, rounding of porcelain margins can be observed in collarless metal ceramic restorations. Thus, there is a need for improvement in dental materials and techniques to minimize this problem, Furthermore, care should be exercised during the clinical procedure.

• Journal of Periodontal and Implant Science
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• 제33권4호
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• pp.705-715
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• 2003

Procedures for treatment of molar furcation invasion defects range from open flap debridement, apically repositioned flap surgery, hemisection, tunneling or extraction, to regenerative therapies using bone grafting or guided tissue regenerative therapy, or a combination of both. Several clinical evaluations using regenerative techniques have reported the potential for osseous repair of treated furcation invasions. Regenerative treatment of maxillary molars are more difficult due to the multiple root anatomy and multiple furcation entrances therefore, purpose of this study was to evaluated histologically compomer and Ketac Silver as a barrier in the treatment of a bi-furcated maxillary premolar. Five adult beagle dogs were used in this experiment. With intrasulcular and crestal incision, mucoperiostcal flap was elevated. Following decortication with 1/2 high speed round bur, furcation defect was made on maxillary premolar. 2 month later one premolar was filled with compomer and the other premolar was filled with Ketac Silver. After 4, 8 weeks, the animals were sacrificed by vascular perfusion. Tissue block was excised including the tooth and prepared for light microscope with H-E staining. Results were as follows. 1. Compomer & Ketac Silver restoration were encapsulated fine connective tissue. 2. In 4 weeks, compomer & Ketac Silver restoration slightly infiltrated inflammatory cells but not disturb the new bone or new cementum formation. 3. In 8 weeks, compomer & Ketac Silver restoration were less infiltrated iflammatory cell and encapsulated fine connective tissue. 4. Therefore, compomer & Ketac Silver filling to the grade III maxillary furcations with multiple root anatomy and multiple furcation entrances is possible clinical method and this technique is useful method for maxillary furcation involvement but it is thought that periodic maintenance should be needed