• 대한본초학회지
• /
• 제27권4호
• /
• pp.73-80
• /
• 2012

Objectives : Under normal condition melanin protects the skin from extracellular stimuli including ultraviolet (UV)-induced oxidative skin damages, but excess production and accumulation of melanin can induce hyperpigmentation causing esthetic problems. Therefore, in this study we tried to search for natural skin whitening materials from marine natural resources. Methods : Water and ethanol extracts of marine natural resources were prepared from Porphyra thalli (PT), Laminariae thallus (LT), Ostreae concha (OC), Sargassum thallus (ST), Undaria thallus (UT), Codium thalli (CT), Enteromorpha thalli (ET), Syngnathoides biaculeatus (SB), and Hippocampus coronatus (Hc). Their effects against UVB and ${\alpha}$-melanocyte stimulating hormone (${\alpha}$-MSH)-induced melanogenesis were investigated based on melanin formation in B16 mouse melanoma cells. The mRNA and protein expression of enzymes involved in the melanogenic process were further examined by reverse transcriptase-polymerase chain reaction (RT-PCR) and Western blot analysis, respectively. Results : Water extract of Ostreae concha (OCW/E) effectively inhibited UVB and ${\alpha}$-MSH-induced melanin production in B16 melanocytes, which seemed to be mediated by inhibition of mRNA expression of tyrosinase and tyrosinase-related protein 1 (TRP-1). In another experiment, ethanol extracts from Porphyra thalli (PTE/E), Laminariae thallus (LTE/E), Sargassum thallus (STE/E), Undaria thallus (UTE/E), Codium thalli (CTE/E), Syngnathoides biaculeatus (SBE/E), and Hippocampus coronatus (HcE/E) significantly suppressed UVB and ${\alpha}$-MSH-induced melanin formation. Furthermore, ethylacetate fraction isolated form LTE/E (LTE/EEt) decreased UVB and ${\alpha}$-MSH-elevated extracellular melanin levels via inhibition of tyrosinase protein expression. Conclutions : These results suggest that marine natural resources such as Porphyra thalli, Laminariae thallus, Ostreae concha, Sargassum thallus, Undaria thallus, Codium thalli, Syngnathoides biaculeatus and Hippocampus coronatus have anti-melanogenic effects, thereby exhibiting high potentials to be utilized as one of the ingredients for the development of new whitening functional cosmetics.

• 디지털융복합연구
• /
• 제15권6호
• /
• pp.353-359
• /
• 2017

우리나라는 현재 공공디자인에 많은 관심을 가지며 다양한 공공기관에서 다양한 디자인 정책을 펼치고 있다. 이에 본 연구에서는 공공디자인과 사용자 경험이 어떠한 관계에 있는지 알아보는 데 목적을 둔다. 공공디자인과 경험에 대한 문헌연구를 통해 이론적 배경을 이해하였으며, 관련 연구 및 선행연구 사례를 통하여 본 연구를 위한 공공디자인의 평가 항목을 도출해 낼 수 있었다. 한국 공공디자인협회에서 언급한 사례를 바탕으로, Shedroff의 경험요소와 사용자 경험요소를 통한 분석을 시행하였다. 또한, 설문조사를 통하여 해당 사례 유(有)경험자들의 응답만 모아 실증연구를 진행하였다. 연구결과, 공공디자인 요소인 접근성, 지역정체성이 사용자 경험요소인 Pleasurable, Meaningful과 밀접한 관계가 있었고, 사용자들의 만족도는 5점 만점에 2.64점이 나왔다. 공공디자인에 있어 심미적인 측면도 중요하지만, 그것을 보고 쓰는 사용자가 누구인지, 또 그들이 어떻게 이해하고 받아들이는지를 먼저 파악해야 할 것이다.

• 한국융합학회논문지
• /
• 제11권1호
• /
• pp.169-174
• /
• 2020

사이드 볼스터는 자동차 시트에서 탑승자가 시트에 착석하였을 때, 더욱 안정성을 줄 수 있도록 옆에서 탑승자의 몸을 잡아주는 부품이다. 본 연구에서는 A, B 두 가지의 모델을 가지고 자동차 시트에서 사이드 볼스터에 대한 구조 및 피로해석을 수행하였다. 하중이 많이 실리는 부분과 자동차 운행 시 피로로 인한 파손 및 구조에 따른 내구성의 차이를 연구하였고 응력, 변형량의 분포 및 피로 수명을 알아보았으며 또한 그 강도 및 내구성을 검토하였다. 본 연구 결과는 사이드 볼스터의 설계에 따라 피로 파손을 줄이고 그 피로 수명 및 내구성을 증가할 수 있는 데 기여가 될 것으로 사료된다. 그리고 본 결과를 자동차 사이드 볼스터의 설계를 실제적으로 적용함으로서 제품을 향상시킬 수 있고 본 연구결과를 미적 감각을 가진 융합 연구에 응용하는 것이 유리하다고 사료된다.

• 대한치과보철학회지
• /
• 제54권4호
• /
• pp.451-457
• /
• 2016

보철 치료계획 결정과정은 임상정보에 대한 치과의사의 분석과 환자와의 상호소통을 통하여 이루어진다. 치아의 상실이나 치관부 결손으로 인해 발생한 공간으로 반대악 치아가 정출된 경우, 구강기능을 회복시키는데 있어 적절한 치료방법 선택 및 예후를 예측하는데 혼란이 야기될 수 있다. 치아의 정출로 인한 교합평면의 심한 부조화가 나타난 경우, 신중한 평가가 필요하며, 필요 시 교합평면을 재설정 해야 한다. 본 증례는 심한 정출에 의한 불균일한 교합평면과 class III 악간관계로 인한 비심미성 및 저작불편을 주소로 내원한 환자로, 체계적인 진단과정을 통한 치료계획의 수립으로 교합평면 재설정을 통한 전악수복으로 심미적이고 기능적인 결과를 얻었기에 보고하는 바이다.

• 복식
• /
• 제52권2호
• /
• pp.1-17
• /
• 2002

The Traditional Look, a class of fashion, represents image based on British aristocratic authenticity and cultural heritage as unchangeable and lasting classic fashion style. And recently, it keeps up with the trend of modern and young consumers' desire by putting various images. The purpose of the study is to investigate the concept, image and present market condition and to analyze degree of consumers' brand awareness of Traditional brand in pursuit of developing new market and ensuring power between competitive brands. From above work, surveyed on degree of brand awareness and interest, preference, associable image and purchase factors coming from consumers. 606 data were analyzed with SPSS package. Frequency, Factor analysis, one-way ANOVA, Multiple response, and correlation were applied. The results of this study were as follows. 1. Traditional brand has a high degree at consumers' brand awareness but comparatively lower at interest in it. In band name, while the Burberry has the highest brand awareness, the Polo and the Hunt take first and second position in a purchasing rate. Brand preference has tendency to be concentrated on certain brands showing the outstanding highest degree like the Polo in the 20s, and the Burberry in the 50s in aspect of age structure. 2. In associable image of Traditional brand, it is associate with noble image as dignified, classical and intellectual with itself strongly among practical, individuality, confidential and noble image. 3. As the purchase factors of traditional brand products, it depends on mainly the reliability and esthetic factors like design and quality rather than ostentatious and practical factors. 4. Associable image except individuality image is correlated with the purchase factors of traditional brand.

• 대한치과기공학회지
• /
• 제28권1호
• /
• pp.67-81
• /
• 2006

This research has been attempt to examine closely factors that high cost and value to overall satisfaction state for dental implant prosthesis, re-utilization intention, inducement intention of the general hospital dental service user and provide basis data necessary to establish competitive general hospital dentistry management strategy. Collected data using own recording way questionnaire from April 17, 2004 to May 15, 2004 choosing 142 people that agree on this research and question of 361 people that dental implant prosthetic treatment finished from March 1, 1999 to March 1, 2004 for this. Major analyzation consequences are as follows : First, general satisfaction, re-utilization intention, inducement intention for implant prosthesis that highly correlation variables are kindness, explanation, medical treatment level and appreciation of the aesthetic. Second, correlation is high relatively between re-utilization intention, inducement intention in the 3 variables such as general satisfaction re-utilization intention, inducement intention. Third, the result of multiple regression analysis showed that most significant effective factors are satisfaction with explanation of dental implant prosthesis between the 3 dependant variables such as general satisfaction, re-utilization intention, inducement intention. In looking into these consequence, how to improve that raise satisfaction about dental implant prosthetic treatment and to establish patient focused care service system for dental implant prosthesis, it is consider that explain enough about implant prosthesis and raise quality of medical examination and treatment level, including satisfied with fabrication of good esthetic dental implant prosthesis.

• The Journal of Advanced Prosthodontics
• /
• 제12권5호
• /
• pp.265-272
• /
• 2020

PURPOSE. The aims of this study were to investigate mechanical properties and hydrothermal degradation behaviour of the cubic-containing translucent yttrium oxide stabilized tetragonal zirconia polycrystal (Y-TZP). MATERIALS AND METHODS. Four groups of Y-TZP (T, ST, XT, and P), containing different amount of cubic crystal, were examined. Specimens were aged by autoclaving at 122℃ under 2 bar pressure for 8 h. Phase transformation was analyzed using X-ray diffraction (XRD) to measure phase transformation (t→m). Kruskal-Wallis test was used to determine the difference. Surface hardness, biaxial flexural strength, and fracture toughness in values among the experimental groups and verified with Wilcoxon matched pairs test for hardness values and Mann Whitney U for flexural strength and fracture toughness. RESULTS. XRD analysis showed no monoclinic phase in XT and P after aging. Only Group T showed statistically significant decreases in hardness after aging. Hydrothermal aging showed a significant decrease in flexural strength and fracture toughness in group T and ST, while group XT and P showed no effect of aging on fractural strength and fracture toughness with P<.05. CONCLUSION. Hydrothermal aging caused reduction in mechanical properties such as surface hardness, biaxial flexural strength, and fracture toughness of Y-TZP zirconia. However, cubic-containing zirconia (more than 30% by volume of cubic crystal) was assumed to have high resistance to hydrothermal degradation. Clinical significance: Cubic-containing zirconia could withstand the intraoral aging condition. It could be suggested to use as a material for fabrication of esthetic dental restoration.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• 제35권2호
• /
• pp.94-100
• /
• 2009

Purpose: As the interest and demand for esthetics grow up with medical development, the number of patients who want to correct dentofacial deformities by orthognathic surgery has increased. And the success of orthognathic surgery is dependent upon satisfaction of patients in great measure. Therefore the purpose of this study is to examine functional disability, sensory disturbance and esthetic satisfaction of the patients after orthognathic surgery. Material and methods: Among 89 patients who orthognathic surgery was performed at Seoul National University Bundang Hospital during the period from July 2003 to July 2008, 46 patients were considered in the study. Patients were surveyed with questionnaires and visual analogue scale(VAS) which author has designed. The analysis and comparison were performed according to gender, follow up span, and type of surgery based on answer of questionnaires. Results and conclusions: Total satisfaction rate was 76%. And there was statistical significant difference between subjective evaluation of facial esthetics before the surgery and that of after surgery(p<0.05). Differences in occurrence of functional disability, sensory disturbance between groups were not observed. In conclusion, the operator should understand the postoperative self-satisfaction of the patients and complications. If we can communicate with the patients before operation. patients' satisfaction rate will increase after operation.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• 제43권4호
• /
• pp.239-246
• /
• 2017

Objectives: This paper proposes Han's ratio as an objective and quantitative comparative result obtained from pre and postoperative data in patients with a mandibular angle reduction. Materials and Methods: Thirty patients, 12 men and 18 women, who visited the Department of Oral and Maxillofacial Surgery with the chief complaints of skeletal mandibular prognathism and prominent mandibular angle were selected. The subjects were classified into 3 groups according to the types of surgical procedures involved. Group A consisted of patients who underwent mandibular angle resection and mandibular setback. Group B was comprised of patients with mandibular angle resection, mandibular setback and genioplasty. Group C consisted of patients with mandibular angle resection, mandibular setback, Le Fort I osteotomy, and genioplasty. The landmarks placed in pre and postoperative frontal photographs were used to obtain the Han's ratio in each group. The Han's ratios were compared pre- and postoperation and according to the surgical techniques applied. Results: Of the 3 groups who had undergone a mandibular angle resection, all showed a statistically significant increase in Han's ratio. On the other hand, there was no statistically significant difference based on the surgical techniques used. Conclusion: The ratio of the lateral lower face proposed in this study is a potential indicator of postoperative esthetic enhancement in mandibular angle reduction surgery.

• 한국콘텐츠학회논문지
• /
• 제15권6호
• /
• pp.499-508
• /
• 2015

본 연구는 Pine and Gilmore가 제안한 엔터테인먼트 체험, 현실도피 체험, 미적 체험, 교육체험인 4가지 체험영역을 바탕으로 테마파크 방문객의 몰입에 어떤 영향을 미치는지, 그리고 몰입경험이 테마파크 재방문 및 구전의도에 어떠한 영향을 미치는지 살펴보고자 한다. 실증분석을 위해 테마파크를 방문한 고객을 대상으로 설문조사를 실시하였다. 연구가설을 검증하기 위해 SPSS 18.0과 AMOS 18.0 프로그램을 활용하여 통계분석을 실시하였다. 연구결과를 요약하면 다음과 같다. 첫째, 테마파크 내 미적 체험요소, 교육 체험요소, 엔터테인먼트 체험요소, 현실도피체험요소는 방문객의 몰입에 영향을 미치고 있었다. 둘째, 체험에 대한 방문객의 몰입경험이 증가할수록 재방문/구전의도에 긍정적 영향을 미치는 것으로 나타났다. 셋째, 체험요소는 몰입을 통해 재방문/구전의도에 간접적인 영향을 미치고 있었다. 이런 연구결과를 바탕으로 테마파크가 일회성 방문이 아닌 재방문객을 꾸준히 유치하기 위해서는 테마파크에서의 체험의 극대화를 통한 방문객의 몰입도 제고에 더욱 신경 써야 함을 알 수 있다.