• ETRI Journal
• /
• 제38권1호
• /
• pp.149-158
• /
• 2016

In the field of augmented reality technologies, commercial optical see-through-type wearable displays have difficulty providing immersive visual experiences, because users perceive different depths between virtual views on display surfaces and see-through views to the real world. Many cases of augmented reality applications have adopted eyeglasses-type displays (EGDs) for visualizing simple 2D information, or video see-through-type displays for minimizing virtual- and real-scene mismatch errors. In this paper, we introduce an innovative optical see-through-type wearable display hardware, called an EGD. In contrast to common head-mounted displays, which are intended for a wide field of view, our EGD provides more comfortable visual feedback at close range. Users of an EGD device can accurately manipulate close-range virtual objects and expand their view to distant real environments. To verify the feasibility of the EGD technology, subject-based experiments and analysis are performed. The analysis results and EGD-related application examples show that EGD is useful for visually expanding immersive 3D augmented environments consisting of multiple displays.

• 복식문화연구
• /
• 제14권6호
• /
• pp.1042-1055
• /
• 2006

The purpose of this study is to consider the formative characteristics of dance sports from such points of view as shapes, colors, material and decorations, and to examine artistic characteristics that are expressed through those elements. As a result, this study shows five artistic characteristics as follows; First, rhythmic characteristic is expressed with repeat of lines that is formed by pleats, shirring or gather, with duplication of ruffle's wave, with gradation of colors, with Moire-effect that is generated with overlap of see-through material, with glossy material that reflects lights to a great extent, with fringe. Second, bodily characteristic emphasizes the beauty of human bodies through direct or indirect body exposure by way of cut-and-open, see-throughness or close adhesion. Third, decorative characteristic is shown with beads, fringe, ruffle, embroidery, shirring, binding, or feather. Fourth, the beauty of female body is manifested to express eroticism, which is culminated by body exposure, body consciousness, use of illuminating or see-through material or colorful trimming. Finally, elegant characteristic is revealed through feminity, sophistication, and harmony that are expressed with black and white colors, see-through material, or bead trimmings.

• 한국태양에너지학회 논문집
• /
• 제29권1호
• /
• pp.1-10
• /
• 2009

This study was carried out to evaluate the Life Cycle Cost(LCC) of three types of RTPV(Building Integrated Photovoltaic) systems-Glass plus Granite. Crystalline BIPV and See through Amorphous BIPV-which were vertically installed to generate the same power output(76 kW level). Initial investment costs. cost. savings and maintenance costs had been predicted during the period of analysing the LCC of three types of BIPV(Building Integrated Photovoltaic) systems installed for the purpose of evaluating the LCC. In case of cost savings, it had been analyzed by measuring the amount of electric power generated, reduction in lighting load and heat & cooling loads through simulation. From this analysis, it was predicted that the See-through amorphous BIPV offering cost saving advantages demonstrated the economical efficiency similar to the Class plus Granite when it is backed by more than 20 years of durability.

• Communications for Statistical Applications and Methods
• /
• 제28권5호
• /
• pp.425-445
• /
• 2021

A generalization of the log-logistic (LL) distribution called exponentiated log-logistic (ELL) distribution on lines of exponentiated Weibull distribution is considered. In this paper, based on progressive type-II censored samples, we have derived the maximum likelihood estimators and Bayes estimators for three parameters, the survival function and hazard function of the ELL distribution. Then, under the balanced squared error loss (BSEL) and the balanced linex loss (BLEL) functions, their corresponding Bayes estimators are obtained using Lindley's approximation (see Jung and Chung, 2018; Lindley, 1980), Tierney-Kadane approximation (see Tierney and Kadane, 1986) and Markov Chain Monte Carlo methods (see Hastings, 1970; Gelfand and Smith, 1990). Here, to check the convergence of MCMC chains, the Gelman and Rubin diagnostic (see Gelman and Rubin, 1992; Brooks and Gelman, 1997) was used. On the basis of their risks, the performances of their Bayes estimators are compared with maximum likelihood estimators in the simulation studies. In this paper, research supports the conclusion that ELL distribution is an efficient distribution to modeling data in the analysis of survival data. On top of that, Bayes estimators under various loss functions are useful for many estimation problems.

• Toxicological Research
• /
• 제17권
• /
• pp.251-256
• /
• 2001

The expression of phase II detoxifying enzymes is affected by a variety of compounds and the induction of the enzymes plays an essential role in chemoprevention. A variety of phytochemicals such as sulfur-containing chemoprotective agents (SCC) may trigger cellular signals and activate phase II gene expression through ARE activation. see induces glutathione S-transferases. Studies were conducted to investigate the role of mitogen-activated protein (MAP) kinase and phosphatidylinositol 3-kinase (PI3-kinase) in the induction of GST (e.g. rGSTA2) by sec. We also studied the MAP kinase pathway responsible for the GST expression by see and compared that with the pathway activated by oxidative stress as a result of sulfur amino acids deprivation (SAAD). see inhibited phosphorylation of ERK1/2 although the effect of see on JNK and p38 MAP kinase was minimal. Wortmannin and LY294002. PI3-kinase inhibitors. abolished the increases in rGSTA2 mRNA and protein levels by SCC. Deprivation of cystine and methionine caused oxidative stress in H4IIE cells. as evidenced by a decrease in the reduced glutathione and an increase in prooxidant production. Electrophoretic mobility shift assay revealed that the ARE complex consisting of Nrf-1/2 and Maf proteins was activated 12~48 h. The rGSTA2 mRNA and protein levels were increased by SAAD. Activation of ARE and induction of rGSTA2 were both completely inhibited by PI3-kinase inhibitors. Inhibition of p38 MAP kinase by SB203580 prevented the ARE-mediated rGSTA2 induction. The results of this study showed that PI3-kinase might play an essential role in the ARE-mediated rGSTA2 induction by see or SAAD and that the dual MAP kinase pathways were responsible for the enzyme induction.

• 정보교육학회논문지
• /
• 제20권2호
• /
• pp.189-196
• /
• 2016

PATROL은 디지털교과서를 활용하여 플립클래스룸을 적용한 교수학습모형으로서 계획, 실행, 추적, 추천, 요구, 안내 단계로 구성되어 있다. 현재의 디지털교과서는 서책형교과서의 내용과 함께 추가적인 멀티미디어 자료를 보여주는 기능을 중심으로 개발되었기 때문에 교사들이 학생들의 가정 학습 결과를 파악하기가 어렵다. 따라서 본 연구에서는 학생들의 학습 상황을 분석하고, 진단하고, 처치할 수 있도록 PATROL 모형 기반의 디지털교과서 기능을 설계하였다. 디지털교과서 기반의 학습 분석 기능은 관계 분석, 평가 분석, 예측 분석, 적응 분석, 정보 분석 등 5단계로 구성하였으며, 이 기능을 SEE-PAD라 명명하였다. 또한, 단계별 기능을 구체화하기 위해 Use Case 다이어그램과 시퀀스 다이어그램을 제시하였다.

• 항공우주시스템공학회지
• /
• 제17권6호
• /
• pp.9-15
• /
• 2023

재난 및 재해를 효과적으로 예방하고 대응하기 위하여 투시형 HMD를 착용한 조종사가 무인항공기에서 전송되는 영상을 이용하여 재난 및 재해 관련 구조 작업을 수행하는 기법들이 개발되어 왔다. 그러나 투시형 HMD를 착용한 조종사는 현장 전체를 통합적으로 인지할 수 없기 때문에 현장 상황에 적합한 작업들을 신속하게 결정하고 실행하기에는 한계가 존재한다. 이러한 문제점을 극복하기 위해 본 논문에서는 투시형 HMD를 착용한 구조요원이 무인항공기를 효율적으로 운용할 수 있는 증강현실 기반의 인터페이스 기법을 제안한다. 모의실험 결과는 시야가 확보되는 상황에서 투시형 HMD를 착용한 구조요원이 손가락 제스처를 기반으로 짐벌과 무인항공기의 비행을 고속으로 제어할 수 있음을 보여준다.

• Anatomy and Cell Biology
• /
• 제56권2호
• /
• pp.259-267
• /
• 2023

Stature is an essential component of biological profile analysis since it determines an individual's physical identity. Long bone dimensions are generally used to estimate the stature of skeletal remains; however, non-long bones such as the sternum, cranium, and sacrum may be necessary for some forensic situations. This study aimed to generate a regression equation for stature estimation of the skeletal remains in the Thai population. Ten measurements of the sacrum were measured from 200 dry sacra. The results revealed that the maximum anterior breadth (MAB) provided the most accurate stature prediction model among males (correlation coefficient [r]=0.53), standard error of estimation (SEE=5.94 cm), and females (r=0.48, SEE=6.34 cm). For the multiple regression model, the best multiple regression models were stature equals 41.2+0.374 (right auricular surface height [RASH])+1.072 (anterior-posterior outer diameter of S₁ vertebra corpus [APOD])+0.256 (dorsal height [DH])+0.417 (transverse inner diameter of S₁ vertebra corpus [TranID])+0.2 (MAB) with a SEE of 6.42 cm for combined sex. For males, stature equals 63.639+0.478 (MAB)+0.299 (DH)+0.508 (APOD) with a SEE of 5.35, and stature equals 75.181+0.362 (MAB)+0.441 (RASH)+0.132 (maximum anterior height [MAH]) with a SEE of 5.88 cm for females. This study suggests that regression equations derived from the sacrum can be used to estimate the stature of the Thai population, especially when a long bone is unavailable.

• 운동과학
• /
• 제21권2호
• /
• pp.231-242
• /
• 2012

본 연구의 목적은 운동부하검사에서 일반적으로 많이 사용하는 Bruce protocol을 이용한 최대하 운동의 대사반응, 주요 시점의 심박수 기록 및 1,200 m 달리기 기록을 이용하여 최대산소섭취량을 추정하는 모형을 개발하고 모형간 추정의 타당도를 분석하는 데 있다. 연구대상은 성인 남성 255명(1,200 m 달리기는 133명)이며 Bruce protocol을 이용하여 최대운동부하검사를 실시하였고, 3분인 1단계와 6분인 2단계 종료 시점의 대사반응을 측정하였다. 측정항목은 VO₂(㎖㎖/kg/min), VCO₂(㎖/kg/min), VE(L/min) 및 HR(bpm), HR가 150 bpm과 170 bpm에 도달하는 시간, Bruce protocol 6분과 3분 심박수 차이, 1,200 m 달리기 기록 등이었다. 신체자료와 최대하 운동 중 대사반응을 이용하여 최대산소섭취량을 산출하는 모형을 개발하기 위하여 다중회귀분석을 실시하였다. 모든 변수를 동시투입법으로 분석한 전체모형의 R은 0.642이고(p<.01) 추정의 표준오차(SEE)는 4.38 ㎖/kg/min, 변동계수(CV)는 10.8%이었으나(p<.01), 다중공선성이 나타났다. 단계별분석법으로 분석한 3분모형1과 모형2의 R은 0.341과 0.461이고, SEE는 6.05와 5.72 ㎖/kg/min, CV는 14.9와 14.1%로 나타났고(p<.01), 다중공선성이 나타나지 않았다. 6분모형1과 모형2의 R은 0.350과 0.456이었고(p<.01), SEE는 6.03과 5.74 ㎖/kg/min, 변동계수(CV)는 14.9와 14.2%로 나타났으며(p<.01), 다중공선성이 나타나지 않았다. 6분HR-3분HR 모형의 R은 0.150, HR150모형은 0.151, HR170모형은 0.154로 나소 낮게 나타났고, SEE는 6.36~6.37 ㎖/kg/min으로 유사하게 나타났고, CV도 15.7%로 유사하게 나타났다. 1,200 m 달리기 모형의 R은 0.444이고, SEE는 4.82 ㎖/kg/min, CV는 11.9%로 나타났다. 결론적으로 Bruce protocol을 이용하여 실시한 최대산소섭취량 추정 방법 중 실용적인 유용성과 간편성을 고려하면 대사반응을 이용한 6분모형과 3분모형이 적합한 모형으로 나타났고, 심박수 모형과 달리기 모형은 추정의 정확도가 다소 낮게 나타났다.

• 수산경영론집
• /
• 제31권1호
• /
• pp.13-32
• /
• 2000

This study tries to give an insight for fisheries policy makers to prepare policy proposals for Early Voluntary Sectoral Liberalization(EVSL) in the fisheries sector of APEC. To do so, the paper assesses the impact of EVSL on the fisheries sector, especially, Korean Deep-See Fisheries in quantitative way using the partial equilibrium analysis of Feenstra(1995). For the use of simple analysis, the paper focuses on the impact on trade flows and welfare of the elimination of tariffs on Korean Deep-See Fisheries among several measures of EVSL. The results from the quantitative analysis of the impact of EVSL on the Korean Deep-Sea Fisheries indicate that the increase of export is moderately higher than that of import and the total welfare effect is positive, even though a certain Deep-Sea Fisheries confronts a reduction of domestic supply basis.