• 한국콘텐츠학회논문지
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• 제12권10호
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• pp.148-158
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• 2012

글로벌화라는 세계적인 흐름 속에 각국의 도시들은 각 도시의 인지도와 이미지를 제고시키기 위해 도시경관의 정체성을 확립하고자 노력을 기울이고 있으며 이러한 흐름 속에 서울도 도시경관의 정체성을 확보하기 위한 다양한 연구가 진행되고 있다. 그러나 일부 도시경관의 문제점 파악과 그 개선방향에 대한 연구가 주류를 이루고 있어 현재 구축된 도시경관 자체의 정체성을 확보하는 연구는 아직 미진한 실정이다. 이에 본 연구에서는 인터넷 설문조사를 수행하여 인지도 및 인식 차이를 기반으로 도시경관을 분석하고 이를 시각화하는 분석틀을 제안한다. 본 분석틀의 가장 핵심이 되는 도시경관에 대한 인식 및 인지도 차이 분석은 설문조사의 응답에서 추출한 정답률과 명답률에 의해 이루어지며 시각화는 이들의 상관관계를 통해 도출되는 정확률을 도식화하는 방법으로 수행된다.

• 한국한의학연구원논문집
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• 제16권2호
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• pp.193-198
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• 2010

Objectives : The directional supplementation and draining and twirling supplementation and draining have been used widely in oriental medical clinic. The aim of this study is to compare the effects between directional supplementation and draining method and twirling supplementation and draining. Methods : Clinical experiment was performed with 21 students of oriental medical college of Daegu Haany university. Acupuncture was applied at left Hapgok (LI4) with directional supplementation and twirling supplementation respectively, and the thermographic change was checked using DITI (Digital Infrared Thermographic Image). Results and Conclusion : A significant thermographic change was observed at bilateral Igan (LI2), Yanggye (LI5), Gokji (LI11), and Yeonghyang (LI20) in directional supplementation. A significant thermographic change was observed at bilateral Igan (LI2), Yanggye (LI5), and Yeonghyang (LI20) in twirling supplementation. Based on the thermographic change, it could be demonstrated that directional supplementation is more effective that twirling supplementation.

• 정보처리학회논문지B
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• 제15B권5호
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• pp.391-396
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• 2008

동영상에서 객체의 움직임은 동영상의 내용을 분석하는데 중요한 요소로 작용한다. 따라서 움직임 정보를 이용하여 동영상 내용을 분석하고 검색하기 위한 많은 방법들이 제안되었다. 그러나 대부분의 방법들은 객체 자체의 동작 보다는 움직임의 방향이나 경로를 분석하는 쪽으로 치중되었다. 본 논문에서는 객체의 움직임에 의한 모양 변화를 이용하여 객체의 동작을 표현하고 비교하기 위한 모양 시퀀스 기술자(descriptor)를 제안한다. 객체의 움직임 정보는 입력된 이미지 시퀀스에서 객체 영역을 추출하여 연속된 2차원 모양 정보로 표현되고, 각각의 2차원 모양 정보는 모양 기술자를 이용하여 1차원 모양 특징 값으로 변환된다. 순서에 따라 배열된 모양 기술자들을 시간 축으로 주파수 변환한 후 저주파영역의 계수를 취하여 모양 시퀀스 기술자를 얻게 된다. 실험을 통하여 제안된 방법이 객체의 동작 정보를 매우 효과적으로 표현 및 비교 가능하여 내용 기반 동영상 검색, 동작 인식 등의 인지적 관점의 움직임 분석 응용에 적용 가능함을 보였다.

• 한국방사선학회논문지
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• 제12권4호
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• pp.511-518
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• 2018

이 연구는 뇌동맥자루의 임상적 진단에 사용되는 3차원 디지털 혈관조영술과 3차원 디지털 감산 혈관조영술을 동일 부위에 시행한 환자 53명의 영상에서 뇌동맥자루 경부 직경, 최대 직경, 최대 면적 및 체적을 측정하고, 각 검사법의 영상 노이즈와 피폭선량을 분석하여 뇌동맥자루 진단검사에서의 임상적 진단 차이를 비교하였다. 3차원 디지털 혈관조영술과 3차원 디지털 감산 혈관조영술에서 뇌동맥자루의 경부직경, 최대직경, 최대면적, 체적, 노이즈를 비교한 결과가 일치하거나 아주 미세한 차이로 나타났다. 하지만, 방사선피폭선량은 3차원 디지털 감산 혈관조영술에 비하여 3차원 디지털 혈관조영술이 현저히 낮게 발생하였다. 따라서 뇌동맥자루의 임상적 진단을 목적으로 시행하는 경우에는 환자의 피폭선량을 감소를 위해 3차원 디지털 혈관조영술이 우선적으로 사용되어야 할 것이다.

• 디자인학연구
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• 제6권1호
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• pp.47-72
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• 1993

Nowadays conmpetltlOn of developing new products is getting keen. We can notice that the role and importance of design are emphasized more than ever.The main cause of this tendency is that technical power is no more a factor which secures the superiority in products competition, as technology is gneneralized in the world. Therefore, design is recognized intensely as a competitive strategy to promote competitive power of products. It is an already known fact that the design for both rational function and charming form to satisfy consumer's desires is a short cut to success, when a company develops a new product to promote competitive power in market. The design which plays a leading role in the activity of developing more cnovenient, more economical and more aesthetic products is called 'Competitive Edge' or 'New Corporate Weapon'. Judging form each company's case of developing products, we can guess that it has its own plan and process of developing new products with defferdnl interest and effort. The strategy of developing products is considered as the most important factor that affects the very existence of rhe company. This thesis is composed of six chapters in all. In the firstchapter, I describe the purpose, method, and scope of study.The second chapter includes the image of form in oil fan heater market in nearby Japan and that of interior in our domestic home and shops, and the trend of word life cycle by analyzing circumstances. The third chapter focuses on consumer's attitude. In the fourth chapter, I compare and test current products of competitive companies including Samsung, Daewoo, Shinilwith those of Gold STar. The trend of products, technique, and design which resulted form this comparison is described. In the fifth chapter I explain the strategy, and process of design of oil fan heater in 1992. The last conclusive chapter presents the major point drawed form the case study, but not includes an estimation of products and the condition of market. In this thesis, I reconsider the general understanding of design and designing process and the value of design as a main factor in the strategy of management by investigating the development of products and the strategy of design, and the process of design.

• 복식문화연구
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• 제18권3호
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• pp.423-435
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• 2010

The purpose of this study was to observe the current consumption of bedding products, purchase behavior, and to compare between purchase criteria and degree of satisfaction after the purchase. Independent variables are age, consumer's knowledge and involvement about the bedding materials. This study can contribute for bedding product marketing strategies and design development. We used questionnaires that were distributed to 500 females aged in 20s to 50s, using stratified sampling method. Only 457 reliable questionnaires were selected for statistical analysis. Data were analyzed statistically through frequencies, paired t-test, ANOVA, Dunnett T3, Chi-test, using SPSS (Version 12.0). The results of this study are as follows. The types of bedroom was significantly associated with age variables. Women in 20's to 30's were using the mixture of Ondol and bed(chimdaie), while 40's to 50's women were using bed for all their rooms. The usage of filling material for the comforter(ibul) was significantly associated with the age group. 20's to 30's age group preferred synthetic fibers for the filling, while 40 to 50's women preferred cotton fibers. Generally, the most of people used quilted comforter and they used cotton material as filling materials of comforters. As to purchase behavior, the most frequent place of purchase was specialty store of bedding products, and the highest percentage of motivation for purchase was "deformation after the use/throwing away". Purchase motivation for bedding was related with the age variable and the clusters based on the knowledge of bedding materials. We analysed the comparison test purchase criteria and satisfaction. In all attributes except brand image, people evaluated lower in satisfaction after purchase than in criteria before purchase.

• 천문학회지
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• 제52권6호
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• pp.217-225
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• 2019

We apply a modified Convolutional Neural Network (CNN) model in conjunction with transfer learning to predict whether an active region (AR) would produce a ≥C-class or ≥M-class flare within the next 24 hours. We collect line-of-sight magnetogram samples of ARs provided by the SHARP from May 2010 to September 2018, which is a new data product from the HMI onboard the SDO. Based on these AR samples, we adopt the approach of shuffle-and-split cross-validation (CV) to build a database that includes 10 separate data sets. Each of the 10 data sets is segregated by NOAA AR number into a training and a testing data set. After training, validating, and testing our model, we compare the results with previous studies using predictive performance metrics, with a focus on the true skill statistic (TSS). The main results from this study are summarized as follows. First, to the best of our knowledge, this is the first time that the CNN model with transfer learning is used in solar physics to make binary class predictions for both ≥C-class and ≥M-class flares, without manually engineered features extracted from the observational data. Second, our model achieves relatively high scores of TSS = 0.640±0.075 and TSS = 0.526±0.052 for ≥M-class prediction and ≥C-class prediction, respectively, which is comparable to that of previous models. Third, our model also obtains quite good scores in five other metrics for both ≥C-class and ≥M-class flare prediction. Our results demonstrate that our modified CNN model with transfer learning is an effective method for flare forecasting with reasonable prediction performance.

• 한국정보과학회논문지:소프트웨어및응용
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• 제36권1호
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• pp.54-61
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• 2009

피부색 정보는 비전 기반 시스템에서 인체 인식에 널리 쓰이는 중요한 정보이다. 그러나 기존의 픽셀 단위의 피부색 분할 방법은 피부색 영역 내부와 외부에 발생하는 오분할로 인해 여러 가지 피부색 관련 시스템의 인식률을 저해시키는 요인이 된다. 본 논문에서는 양자화 영역 정보로부터 프레임 간에 근접한 유사 피부색의 영역별 분할을 통한 피부색 분할 방법을 제안한다. 제안하는 방법은 피부색 영역분할을 위해 JSEG 알고리즘을 통해 영상의 칼라를 양자화하여 영역을 분할한다. 분할된 영역으로부터 근접한 유사 피부 영역의 후보를 결정하고, 각 영역의 히스토그램 비교를 통해 피부색 영역을 결정한다. 이렇게 결정된 영역으로부터 피부색 표본을 추출하여 다음 프레임을 위한 피부색 모델을 갱신한다. 성능 평가를 위해 ECHO 데이타베이스와 조명이 변화하는 환경에서 실제 촬영한 영상을 이용하여 기존 연구의 분류 방법 비교 실험을 실시하였고, 기존보다 향상된 영역 분할 및 조명 적응 성능을 보였다.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1998년도 추계학술대회
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• pp.281-282
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• 1998

Recently, there has been growing interest in the assessment of physiological parameters on brain perfusion that provide more information than pure morphologic diagnosis. Quantification of parameters that characterize cerebral micro-circulation with magnetic resonance imaging is of great relevance for clinical application. We determine the local tissue concentration by exponential relationship between the relative signal reduction S(t)/$S_0$ and local tissue concentration of contrast material $C_m(t)$ in dynamic susceptibility contrast enhanced MR imaging. And then we made relative regional blood volume map by calculating the area under the measured concentration-time curves $C_m(t)$ during first pass of paramagnetic contrast material as a preliminary step for perfusion map. These images make it possible to compare the rCBV in different brain regions in one individual at a time. We have it in contemplation to obtain arterial and brain signal time curves simultaneously to make absolute rCBV and perfusion (rCBF) map. These maps may provide the method of comparative investigations of different patients having strong variation in AIF.

• 패션비즈니스
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• 제16권4호
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• pp.107-122
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• 2012

This thesis takes it an aim to analyze and compare the visual images which results from attaching the voluminous changes of the waist gathering to the basic Sarrouel pants, one of the Islamic costume, and also from the three body type influenced by these changes. The method of the investigation was to select basic designs of the Sarrouel pants, then the three pieces of the experimental clothes called pattern 1(50%), pattern 2(100%), and pattern 3(150%) were made respectively. The 3 types of the adult women were selected as models in a way to represent the S(S1), M(S2), L(S3) the female body indices of the K. S. The models wearing the 3 types of experimental clothes were taken pictures from the front, side and back, which the pictures were used for the evaluations for the visual effects. For the evaluation, the questionaire from 12 to 18, associated with the body types and images respectively were completed and collected in an investigative way. The visual effects by the waist gathering and body size are composed body and image emerged the four factors. Conclusively, the volume of the waist gathering gives a benefit only in terms of the appropriateness in which the voluminous gatherings compensate for the defects of the body type while too much gathering leads to the negative effects. The visual effects from the increased gathering gives the impressions of the more activity with the snugness as it decreases the feminine effects. The evaluation indices like the stiffness or the masculine images might be more or less predominant in this case. This might be ascribed to the fact that the Sarrouel pants were originated from the men's trousers in a real sense.