• 전자공학회논문지CI
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• 제48권2호
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• pp.66-77
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• 2011

본 논문은 특징을 효과적으로 병합하여 계층적 색인구조를 적용하는 광고영상의 분류기법에 대한 체계적 방법을 제안한다. 본 방법은 온라인 및 오프라인 상의 광고 영상 정보 관리를 위한 효과적인 응용으로써, 특별히 광고 영상정보의 추적을 위한 전처리 과정을 제공한다. 이를 위하여 전체 영상에 대한 일반적 정보를 포함하는 전역특징과 영상의 지역적 특성에 기반하는 지역특징을 고려한다. 고안된 지역특징은 영상 회전, 스케일링, 잡음추가, 빛의 변화에 불변하여 아핀(Affine) 변환에 의한 화면 차 영상에 대하여도 신뢰성 높은 매칭 도를 얻을 수 있고 동질의 영상 쌍을 검색하는데 있어서도 높은 정확도를 보여준다. 제안 방법은 우선 전역특징으로 전체영상자료에서 다수의 영상 쌍들로 개략적인 영상 군을 구성한 후에, 영상군안에서 지역특징에 의한 동질 영상 쌍들 즉 정밀한 영상 군들로 분리하는 정밀 매칭을 실행한다. 실행시간을 단축하기 위해 전형적인 클러스터링으로 전역특성이 유사한 영상들끼리 그룹화 함으로서 지역특징에 의한 동질 영상 쌍 간 과도한 매칭 시간의 문제점을 극복한다.

• 한국실내디자인학회논문집
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• 제27권2호
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• pp.118-127
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• 2018

To complete the appropriate pattern language as a planning tool for suburban houses in Korea, this study reviews the characteristics in applying the pattern language to suburban houses in Korea by creating the pattern application examination chart regarding 110 patterns in architecture and evaluating and analyzing 24 examples in terms of the applicability of the patterns, the results of which are as set forth below. Firstly, when grouping the upper 31 patterns by similar characteristics, it was distinguished by the characteristics relating to (i) securing of lighting and viewing; (ii) placing of buildings and space and adjustment of inside and outside privacy through such placing; (iii) placing of proper motion line and functions of adjacent space according to such motion line; and (iv) determining of important space such as personal room, area for couple or children, staircase, entrance, hallway, etc. Secondly, when analyzing the reasons that the lower 41 patterns have not been applied, it was characterized by (i) the work space not suitable for suburban houses or the patterns suitable for commercial space; (ii) the patterns not suitable in Korea due to cultural differences; and (iii) the patterns whose applicability cannot be confirmed due to the limitation of examples and materials used in this study. Thirdly, the analysis of each pattern group (A through M) revealed that the pattern groups D and G are rarely related to suburban houses and J and M are patterns whose applicability cannot be determined in this study. Another characteristics is that the pattern groups B, E, F, I and L which obtain high scores in applicability are importantly reflected in planning for suburban houses in Korea. Fourthly, this study renders the average score of applicability, and the applicability rate, of the examples and confirms the number of the patterns applied in confirmity, patterns partially or potentially applied and patterns not applied at all.

• 한국의류산업학회지
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• 제19권5호
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• pp.635-645
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• 2017

The industry of character toys is increasing and new characters are constantly being developed. However, the development of 2D cover patterns for toys is time-consuming due to frequent pattern modifications made through trial and error. Studies are now underway to obtain 2D clothing patterns from 3D body data, however, little research has been done on 2D pattern of character toys. This study suggests efficient guidelines to develop 2D cover patterns with a reasonable accuracy and processing time. Two 3D models of a dog and rabbit were used to develop 2D cover patterns. Independent variables of this study are set as 3 levels of triangle area (small, medium, and large) that influence the efficacy of 3D and 2D pattern development. The determination of the appropriate triangular area was based on the area and shape change of the 2D pattern. A medium or large triangle area was shown to be suitable for a character dog with a smooth curved surface. However, the appropriate triangle area was small if the characteristics of the curved surface are complicated as in the case of rabbit. The head of a dog (a double-curved surface) and the curved forepaw of a rabbit (a triangular area) should be small when the characteristics of the curved surface (such as the hind leg of a rabbit having a large convex surface and a small surface area) are complicated. Grouping by 3D surface characteristics could be a suitable guideline for the triangle area selection.

• 디자인학연구
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• 제19권5호
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• pp.243-254
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• 2006

매니아는 트렌드와 소비의 주체라는 점에서 마케팅의 파급력이 크다. 그렇기 때문에 매니아들의 심리적 동인인 니즈와 원츠를 읽어내고 세그먼트를 찾아내는 것이 무엇보다도 먼저 실행되어야 한다. 본 연구는 디지털 제품 매니아 시장세분화에 대한 통찰력을 얻기 위한 탐색적 연구로 혁신적 소비자에 관한 선행연구 스케일들을 이용하여 국내 매니아 커뮤니티의 이용자들이 어떤 성향을 갖는지, 선행연구와 어떤 차이를 보이는지, 그들의 구매우선순위와 가치항목은 무엇인지를 알아낸다. 이를 토대로 매니아 유저를 심층면접한 후 분석하여 새로운 매니아 세그먼트를 발견하고 분류하는 데 연구의 초점을 두었다. 우리나라의 디지털 매니아들이 소비자로서 어떤 구매행태를 보이고, 어떻게 구매로 이르는 의사결정을 하는지, 매니아들의 잠재 니즈는 무엇인지를 해석하고 새로운 매니아 세그멘트를 발견함으로써 디지털 매니아의 성향 및 실태에 대해 접근할 수 있으며 추후에 이뤄질 매니아 타켓 마케팅과 디자인의 전략적 단서를 제시하고자 한다.

• 한국연초학회지
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• 제22권2호
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• pp.184-189
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• 2000

This study was conducted to develop the objective evaluation method for tobacco smoke. The evaluation was carried out by using the data of cut or blended tobacco components, smoke components, electric nose system (ENS), and sensory test. By using the statistical methods, such as cluster analysis, discriminant analysis, factor analysis, correlation analysis, and multiple regression analysis, the relationship among the data of tobacco, smoke, ENS, and sensory evaluation was studied. By the results of cluster analysis, the data from smoke analysis by GC and ENS were able to select the difference of tobacco leaf characteristics. As the results of discriminant analysis, grouping by the components of tobacco leaves and smoke was possible and the results of GC analysis of smoke could be used for discrimination of tobacco leaves. In the results of factor analysis, nicotine, tar, CO, puff No and pH in the smoke were the factors effecting on the tobacco leaf characteristics. From the correlation analysis, aroma, taste, irritation, and smoke volume of sensory test had high relation to tar, p-cresol threonolatone, levoglucosane, and quinic acid- ${\gamma}$ -lactone of smoke. The ENS data showed high efficiency for discriminant analysis and cluster analysis, but it was not good for factor analysis, and correlation analysis. It was possible to estimate tobacco leaves and their blending characteristics by the analytical data of tobacco leaves, smoke, ENS, and sensory test results. By the multiple regression analysis, some correlation among selected chemical components and sensory evaluation were found. This study strongly indicated that the some chemical analysis data was available for the objective evaluation of tobacco sensory attributes.

• 한국주거학회논문집
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• 제21권1호
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• pp.53-65
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• 2010

Apartment buildings represent the most typical patterns of housing in Korea. The present plans are very different from the previous ones when they appeared for the first time. Although apartment unit plans has changed drastically, they can be classified into several categories. Apartment unit plans reflects the demands of living activities and space dimensions of unit plans have the characteristics of diachronic continuity and carry the values of living culture. Thus this study aims to provide the statistical dimensional data of each room that can be actually used for the design of unit plans by sub-grouping typical unit plans. The statistical data of this study showed that apartment unit plans are shifting from 2bay/3room type to 3bay/3room type in 1990s. It is very peculiar that the typical unit plan of $60\;m^2$ area becomes to resemble that of $85\;m^2$ area. The space arrangement of typical unit plans of both $60\;m^2$ and $85\;m^2$ area is almost identical while only their space dimensions differ slightly. As the mean/mode/median values of space dimensions in a typical unit plan are converging into a range of narrow margin, space dimensions of typical unit plan are contended to be strictly regular. The statistical numeric data of various space dimensions provided in this paper can be applied practically to the design of apartment unit plans for low income class people who are disprivileged in the society.

• 한국융합학회논문지
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• 제11권7호
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• pp.169-180
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• 2020

본 연구는 국가 간 이동이 발생한 지오트윗 사용자를 이동거리평균과 이동거리표준편차에 따라 그룹화하여, 국가 간 이동과 자국 내 이동에서 나타나는 특징을 발견하고 연구의 의의를 찾고자 하였다. 데이터마트를 구축 후 국가 간 이동과 자국 내 이동이 발생한 지오트윗을 분리하였고, 해버사인공식을 이용해 사용자의 이동거리를 측정하였다. 국가 간 이동 집단에서는 동일한 언어를 사용하며 생활방식이 비슷한 국가 사이에서 많이 이동하였고, 자국 내 이동에서는 인프라가 잘 구축된 선진국 위주의 국가에서 많은 이동이 발생하였다. 본 연구는 사용자별 이동거리를 계산하여 공통된 특징을 도출하고자 하였으며, 사용자의 이동거리 특성에 따라 그룹화하였다. 본 연구에서 분석한 21개국은 국가별 경제력이나 나이, 직업 등에서 차이가 커 많은 제반 사항이 고려되어야 정밀한 분석이 가능할 것이다. 향후에는 현실적인 사항을 추가한 연구가 진행되어야 할 것이다.

• 대한인간공학회지
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• 제31권6호
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• pp.733-740
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• 2012

Objective: The present study systematically analyzed the characteristics of ergonomic layout optimization methods by a comprehensive literature survey. Background: Although layout design methods for ergonomic placement of controls and displays on a console have been developed, understanding of their characteristics is lacking. Method: The present study analyzed layout optimization papers published past 20 years from the following four aspects: optimization model, optimization algorithm, design principle, and constraint/assumption. Results: The existing layout optimization methods based on various optimization techniques consider only a partial set of four layout principles(importance, frequency of use, sequence of use, and functional grouping) and two ergonomic criteria(visibility and reach). In addition, the existing methods oversimplify components in various sizes, shapes, and angles by assuming the equality of the components in size and shape. Conclusion: A more effective layout optimization method is needed which considers the layout principles and ergonomic criteria in a comprehensive manner and reflect the diversity of components in size and shape. Application: The identified characteristics on the existing layout optimization methods can be applicable to development of a better ergonomic console layout design method.

• 한국환경과학회지
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• 제9권3호
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• pp.241-252
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• 2000

Twenty-two water samples(fifteen groundwater and seven geothermal water samples) were collected to elucidate chemical characteristics of the ground and geothermal waters in the Haeundae hot spring area and its vicinity. Major and honor elements were analyzed for ground and geothermal water samples. The concentrations of $K^+$, Na+$, $Ca^{2+}$, $SO_4^{2-}$, $Cl^-$, ^F^-$ and $SiO_2$ were higher in the geothermal water samples than the groundwater samples except $HCO_3^- and Mg^{2+}$ ions. Based on the contents of Fe, Zn, Cu, Al, Mn and Pb, some of the ground and geothermal water samples are contaminated by anthropogenic sources. The ground waters shown on the Piper diagram belong to $Ca-HCO_3$ type, while the geothermal waters Na-Cl type. The graphs of $Cl^-$ versus $Na^+$, $Ca^{2+}, Mg^{2+}, K^+, SO_4^{2-} and HCO_3^-$ indicate that the groundwater is related partly with mineral-water reaction and partly with anthropogenic contamination, while the geothermal water is related with saline water. On the phase stability diagram, groundwater and thermal water mostly fall in the field of stability of kaolinite. This indicates that the ground and geothermal waters proceed with forming kaolinite. Factor and correlation analyses were carried out to simplify the physicochemical data into grouping some factors and to find interaction between them. Based on the Na-K, Na-K-Ca and Na-K-Ca-Mg geothermometers and silica geothermometers, the geothermal reservoir is estimated to have equilibrium temperature between 125${$\mid$circ}C$ and 160${$\mid$circ}C$.

• 한국정보과학회논문지:데이타베이스
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• 제35권4호
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• pp.319-332
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• 2008

OLAP의 다차원 데이타 모델인 데이타 큐브는 많은 다차원 데이타 분석에 성공적으로 적용되었으며, 데이타 스트림 분석에도 적용하려는 많은 연구가 진행되고 있다. 데이타 스트림은 실시간에 지속적으로 방대하게 생성되며, 데이타의 분포적 특성이 빠르게 변한다는 특징을 가지며, 제한된 메모리 및 처리능력 때문에 한번만 검사하여 처리하는 것을 기본으로 한다. 때문에 데이타 스트림을 메모리에 모두 저장하는 것은 불가능하다. 또한 사용자는 모든 속성 값에 대하여 관심을 두기보다는 일정 지지율 이상을 가진 속성 값에 더욱 관심을 가지게 된다. 본 논문에서는 이러한 데이타 스트림 환경에서 데이타 큐브를 효과적으로 적용하기 위한 동적 데이타 큐브를 제안한다. 동적 데이타 큐브는 속성 값의 지지율에 따라 사용자 관심 영역을 지정하고, 속성 값을 동적으로 그룹화하여 관리한다. 이를 통해 메모리 및 처리시간을 절약하게 된다. 또한 동적으로 지지율이 높은 속성에 대한 분석 상세도를 높여주기 때문에 사용자의 관심영역을 효과적으로 보여준다. 마지막으로 실험을 통하여 제한된 메모리에서 동적 데이타 큐브가 효율적으로 동작함을 검증하였다.