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Hering의 대립색에 해당하는 심리적 고유색을 확인하기 위하여 색상비율평정에 기초한 두 개의 실험을 실시하였다. 최근에 색편선택과제를 사용하여 고유색을 확인하고자 한 오경기 등 (2003)과 박현수 등(2005)의 국내 연구결과는 유사한 과제를 사용한 Kuehni(200la)의 영어권 연구결과와 일부 색상에서 불일치하였다. 따라서 본 연구에서는 그러한 불일치가 실험과제의 차이 때문인지 아니면 언어에 따른 고유색 본래의 심리적 표상의 차이 때문인지를 알아보기 위하여 다른 실험과제들을 사용하였다. 실험 1에서는 단색광을 이용한 고유색 연구에서 많이 사용되었던 단일색상 비율평정을 실험과제로 사용하였고, 실험 2에서는 Hering의 대립색 이론을 잘 반영한다고 할 수 있는 이중색상 비율평정을 실험과제로 사용하였다. 선행연구들과 마찬가지로 먼셀 색편을 실험자극으로 사용한 본 연구의 실험결과들은 Kuehni(200la)의 연구결과보다는 오경기 등(2003)과 박현수 등(2005)의 연구결과에 더 가까웠다. 그러한 결과는 상이한 언어사용자들이 보이는 고유색 판단의 차이가 실험과제의 부산물이 아니라 심층 표상수준에서 비롯되었음을 시사한다. 상이한 언어사용자들에서 나타난 심리적 고유색의 불일치가 갖는 이론적 함의들을 논의하였다. Two experiments based on hue scaling were conducted to identify the psychological unique hues corresponding to the opponent colors of Hering (1878)`s theory. Recently, Kuehni (2001a) used a color-chip selection task to identify the unique hues of English speakers and found different results from those of Oh et al. (2003) and Pak et al. (2005) where similar tasks were used with Korean speakers. The present set of experiments used different experimental tasks to ascertain whether the discrepancy between previous results was caused by task differences or genuinely different psychological representations of unique hues in speakers of different languages. Experiment 1 adopted a single-hue scaling paradigm frequently used in similar studies and Experiment 2 used a double-hue scaling paradigm that reflects Hering`s opponent theory. Munsell color-chips were used in both tasks and the results supported the findings of Oh et al.(2003) and Pak et al.(2005) rather than those of Kuehni (2001a). The findings suggest that differences in unique hue judgments between speakers of different languages lie at a deep representational level and are not an artefact of the experimental task methodology. Theoretical implications of discrepant psychological Unique hues across speakers of different languages are discussed.
Background : Amino acid Filaggrin based Antioxidants(AFAs) is a recently invented peeling agent and the clinical report of the effects of AFAs peeling is insufficient. Objective : The purpose of this study was to investigate the efficacy of peeling with AFAs. Methods : This is a retrospective case study for the 41 patients treated with AFAs peeling at Sanggye Paik Hospital between January, 2002 to April, 2003. The therapeutic efficay was evaluated by the degree of satisfaction of both the patients and practitioners, regarding the number of peelings and the concentration of AFAs. Adverse effects were also evaluated. Results : The results of this study were as follows. 1. Of the 41 patients, 20 were acne, 14 were melasma, 4 were freckle, 2 were postinflammatory hyperpigmentation, and the other was an acne scar patient. 2. The satisfaction rates of the patients were excellent(≥70% improved) 17, good(50-70%) 11, fair(30-50%) 8, and poor(<30%) 5 out of 41 cases. And those of the practitioners were respectively 18, 14, 4, and 5 out of 41 cases. 3. The satisfaction rates tended to increase as the number of peelings increased, while the concentration of AFAs showed little relation with the therapeutic effect. 4. The adverse effects were immediate vesiculation probably due to allergic reaction(3/41), persistent erythema(2/41), persistent irritation(2/41), pigmentation(1/41), and tingling sensation(1/41). Conclusion : AFAs peeling is an effective treatment modality in Korea and several repeelings improve the therapeutic effect. But futher studies on the adverse effects of this procedure are necessary. (Korean J Dermatol 2003;41(11) : 1487∼1493)
본 연구는 세 매체(TV/PC/Mobile)에 집행된 광고의 통합 노출 효과를 추정하는 데 있어서 핵심적으로 활용되는 싱글소스 데이터를 학문적으로 검토하고, 실무에서 활용 가능한 세 매체의 통합 도달률 예측모델을 구축하는 것에 목적을 두고 있다. 이러한 연구목적을 위해 본 연 구는 이제까지 진행된 관련 학술 연구들에서는 최대 규모의 싱글소스 데이터를 취합하여 연구를 진행하였다. 연구는 매체 간 중복 노출의 연도별 변화가 존재하는지, 샘플데이터인 싱글소스데이 터와 실제 매체사 제공 노출 데이터 간에는 얼마나 괴리가 존재하는지를 검토하고, 대규모 싱글 소스 데이터를 활용한 3-Screen 통합도달률 예측모형을 구축, 실용 가능성을 확인하였다. 연구 결과, 첫째로 시간이 지남에 따라 TV매체의 광고집행량은 상대적으로 감소하고, 모바일을 중심 으로 한 중복노출이 증가하고 있는 것이 확인되었다. 둘째로 실제 광고캠페인 중 46%가량에서 매체사 제공 노출량과 싱글소스 데이터 제공 노출량 간의 괴리가 크게 나타나는 점을 확인하였 다. 마지막으로 3,000개 이상의 대규모 싱글소스 데이터를 바탕으로 신뢰도 높은 3-screen 통 합 도달률 예측모형을 구축하여 제시하였다. 이러한 결과를 통해 본 연구는 국내 광고 시장의 3 스크린 통합 노출 효과의 현황을 학문적으로 진단하고 실무적 차원에서 통합 광고 노출 효과 분 석을 활용하는 데 고려해야 할 시사점과 실제 적용 방법론에 대한 가이드라인을 제공하고 있다. The main purpose of this study is to academically review single-source data, which are key used in estimating the integrated advertising exposure effects, and to construct an integrated 3-screen reach prediction model that can be used in practice. This study collected and analyzed single source data from three media such as TV, internet, & mobile at the largest scale in related academic studies in Korea so far. The study examines whether there is a change in estimating exposure between media, how far there is a gap between single source data, which is sample data, and real exposure data provided by actual media companies, and how a 3-screen integrated prediction model using large-scale of single source data is constructed. Results shows that the amount of TV advertising is relatively decreasing over time, and that exposure duplication on mobile is increasing. It was confirmed that the gap between the exposure estimation provided by the single source data and the real exposure is quite large. Finally, based on actual cases more than 3,000 large-scale single source data, a reliable 3-screen integrated prediction model was constructed. This study provides guidelines for forecasting the integrated advertising effects of 3-screen at a practical level in Korea.
Background : Diseases of the lips are common, however the clinical investigations of the labial lesions are not sufficient. Objective : The purpose of this study was to investigate the epidemiological aspects of the labial diseases with the brief review of the common labial diseases. Methods : We retrospectively reviewed the data on 117 patients biopsied for the labial lesions at Sanggye Paik Hospital between August, 1989 and May, 2003. Results : The ratio of male to female was 1:1.54(46:71). The general age distribution was relatively even, however the age distribution was quite different in earh disease. The frequent labial diseases were mucocele, pyogenic granuloma, actinic cheilitis, Fordyce's condition, hemangioma, squamous cell carcinoma, verruca, venous lake, etc., in order of frequency. Vascular disorders and the diseases associated with ultraviolet radiation, such as actinic cheilitis and squamous cell carcinoma, are relatively frequent. Among 117 cases, 29 cases(24.8%), 78 cases(66.7%), and 9 cases(7.7%) involved upper lip, lower lip, and both lips, respectively. And the frequency of the diseases varied according to the locations. Conclusion : The result of our study was different from others and we consider the discrepancy resulted from the regional and racial difference. Further investigations of a wider and larger nature are necessary to understand the epidemiology of labial diseases. (Korean J Dermatol 2003;41(9) : l187~l192)
n this study, a new efficiency improvement method by means of air injection into Pelton turbine jet is presented. In order to analyze air injected jet performance, firstly, micro size 5kW Pelton turbine was designed and analyzed. Similarly the analysis was carried out on a small size 100kW turbine. For the 100kW Pelton turbine, 5kW model was scaled up based on the jet diameter and rotational speed. 5kW performance analysis was performed under several rotational speed. After achieving optimized rotational speed. Air injected jet analysis was performed for rated rotational speed condition. Air injection rate was 1%, 5%, 10%, 15% of the water volume flow rate. Efficiency increase rate was reliable. The 100kW turbine was designed in two types, one jet and two jets systems. Air injection rate was made same and also found to have a reliable increase in efficiency.
Oral implants must fulfill certain criteria arising from special demands of function, which include biocompatibility, adequate mechanical strength, optimum soft and hard tissue integration, and transmission of functional forces to bone within physiological limits. And one of the critical elements influencing the long-term uncompromise functioning of oral implants is load distribution at the implant- bone interface, Factors that affect the load transfer at the bone-implant interface include the type of loading, material properties of the implant and prosthesis, implant geometry, surface structure, quality and quantity of the surrounding bone, and nature of the bone-implant interface. To understand the biomechanical behavior of dental implants, validation of stress and strain measurements is required. The finite element analysis (FEA) has been applied to the dental implant field to predict stress distribution patterns in the implant-bone interface by comparison of various implant designs. This method offers the advantage of solving complex structural problems by dividing them into smaller and simpler interrelated sections by using mathematical techniques. The purpose of this study was to evaluate the stresses induced around the implants in bone using FEA, A 3D FEA computer software (SOLIDWORKS 2004, DASSO SYSTEM, France) was used for the analysis of clinical simulations. Two types (external and internal) of implants of 4.1 mm diameter, 12.0 mm length were buried in 4 types of bone modeled. Vertical and oblique forces of lOON were applied on the center of the abutment, and the values of von Mises equivalent stress at the implant-bone interface were computed. The results showed that von Mises stresses at the marginal. bone were higher under oblique load than under vertical load, and the stresses were higher at the lingual marginal bone than at the buccal marginal bone under oblique load. Under vertical and oblique load, the stress in type I, II, III bone was found to be the highest at the marginal bone and the lowest at the bone around apical portions of implant. Higher stresses occurred at the top of the crestal region and lower stresses occurred near the tip of the implant with greater thickness of the cortical shell while high stresses surrounded the fixture apex for type N. The stresses in the crestal region were higher in Model 2 than in Model 1, the stresses near the tip of the implant were higher in Model 1 than Model 2, and Model 2 showed more effective stress distribution than Model.