• 한국정보시스템학회지:정보시스템연구
• /
• 제26권3호
• /
• pp.91-118
• /
• 2017

Purpose The purpose of this research is to investigate the effect of social capitals on organizational knowledge sharing characteristics and individual innovation activities in community of practice (CoP) of manufacturing company. Design/methodology/approach For this purpose, we divide social capitals as three dimensions, i.e. structural, relational, and cognitive dimension. Structural dimension also consists of closure and Brokerage. Relational social capital is defined as trust about colleagues, superior authorities, and organization. Then, cognitive social capital is defined as a shared understanding among individuals, such as a shared language and codes within CoP. Knowledge Sharing is defined as quantity and quality of shared knowledge. We also defines the cause and effect relationships among social capitals, organizational knowledge sharing characteristics, and individual innovation activities in CoP of manufacturing company as follows. The social capitals will have positive effects on quality of shared knowledge. Then the quality of shared knowledge will have positive effects on the individual innovation activities. This paper tested the validity of these hypothesized casual effects and the sub-hypothesized causal relationships. For the purpose, we used the Partial Least Squares (PLS) for analyzing the causal relationships. Findings Our empirical results show that social capitals of CoP mostly have effects on organizational knowledge sharing characteristics (quantity and quality of shared knowledge) and knowledge sharing activities also have effects on individual innovative activities in the workplace. In this study, these result have a significant implication that a private company will be able to gain organizational innovative performance much better by strengthening CoP supporting activities.

• 한국의류학회지
• /
• 제16권4호
• /
• pp.485-493
• /
• 1992

Three kinds of tight skirts, slim type, straight type, and semi-tight type were investigated to obtain necessary information about the size of the back slit. Fourteen college students put on these experimental clothes and walked on the flat floor, going up and down the stairs. The dimensions of the back slit were measured by width and length. The stride length was taken from the record of footprints of walking. The correlation between the body measurement, stride length and the size of the back slit was studied. As a result of this experiment, the findings are as follows: 1. The size of the back slits differed from each skirt type at the level of p<0.001. In the case of walking on the floor, the average dimension of the back slit was 14.0 cm long 5.0 cm wide for the slim type,9.5 cm long 2.8 cm wide for the straight type and 2.1 cm long 0.5 cm wide for the semi-tight type. 2. In the case of walking on the stairways, the average dimension of the back slit was 16.0 cm long 5.8 cm wide for the slim type, 12.4 cm long 3.9 cm wide for the straight type and 3.1 cm long 1.1 cm wide for the semi-tight type. 3. The correlation between the height (stature, waist height, knee height) and the size of back slit was 0.3 to 0.6. The correlation between the girth (waist, hip) and the size of back slit was 0.3 to -0.5. 4. The correlation between the stride length and the size of back slit was 0.76 for the slim skirt, 0.56 for the straight skirt, 0.28 for the semitight skirt.

• 대한방사선기술학회지:방사선기술과학
• /
• 제42권6호
• /
• pp.435-440
• /
• 2019

This is to study the accuracy of the actual size according to the TOD(table object distance; TOD) change when measuring blood vessels using angiography equipment, and to help the optimal selection of the device used accordingly. Balls similar to the size of common vessels were calibrated with TOD using 30 mm, 20 mm, 10 mm, 5 mm and acrylic phantoms, catheter calibration from 0 cm to 10 cm, 20 cm and 30 cm, respectively. It was measured whether there was a change in the measured value according to the change. The equipment used was GE Innova 3131 IQ equipment, and the image reconstruction method was GE AW4.7 post processing program. Two radiotechnologists were scanned three times by catheter calibration method and 3DRA(3dimension rotational angiography; 3DRA) volume rendering method. The independent sample T-test showed 0.981 (p> 0.05) to verify the significance between the two observers. As a result, in case of catheter calibration, the error rate at TOD 0 mm and 10 mm is within ± 10%, but when the TOD is changed to 20 mm and 50 mm respectively, the tolerance is ± 10% except for 30 mm ball exceeded. On the other hand, 3DRA was included within the tolerance range of ± 10% overall even when the TOD was changed from 0 mm to 50 mm. In the catheter calibration method, the larger the TOD, the larger the error range, and the 3DRA method was able to measure vascular vessels accurately close to the actual measurement without any consideration of the TOD.

• 생태와환경
• /
• 제33권2호통권90호
• /
• pp.69-79
• /
• 2000

Fractal geometry has become one of prospective research approaches as the complex structure of natural entities is not easily characterized by traditional Euclidean geometry. With the fractal geometry, we can better decipher the complex structure and identify natural and anthropogenic agents of landscape patterns occurring at different spatial scales. The usefulness of fractal, however, has not been fully appreciated among Korean academic societies, especially in ecological and limnological fields. We attempt to address three points in this study. First, we introduce the concept and dimension of fractal and review relevant research approaches, especially with respect to ecological and limnological phenomena. Second, we explore possible applications of fractal to some aspects of geography and land use characteristics in South Korea. For the analyses of fractal dimensions, we used data published in other studies previously and collected for this study. Data were analyzed by a perimeter/area method of fractal dimension for the spatial distribution of global solar radiation and leaf area index, and the movement of wild boars in forested landscapes of mid-eastern Korea. The same approach was also applied to the water channel of a hypothetical river and the shape of reservoirs in Yongin, Kyunggi Province. Finally, we discuss the results and key issues to consider when a fractal approach is employed in ecology and limnology.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제14권7호
• /
• pp.2769-2784
• /
• 2020

This paper aims to compare the scenic images of four ancient Chinese cities including Lijiang, Pingyao, Huizhou and Langzhong, so as to provide specific development strategies for the ancient cities. In this paper, the ancient cities' scenic images are divided into three sub-indexes and eight evaluation dimensions. Based on this, the study first uses Python software to collect tourists' online comments on the four ancient cities. Then, the social network analysis method is used to build a high-frequency keywords matrix of tourist comments and the R language is used to generate a visual network graph. After this, the entropy weight method is used to determine the weights and values of eight evaluation dimensions. Finally, the tourists' overall satisfaction indexes of the four ancient cities are calculated accordingly. The results show that (1) the overall satisfaction of Lijiang is the highest, while that of Huizhou is the lowest; (2) from the weight of each evaluation dimension, it can be seen that tourists care more about the national culture and historical culture; (3) from tourists' satisfaction index on each evaluation dimension of the four ancient cities, we can find that the four ancient cities has their own advantages and disadvantages in tourism development. (4) local tourism-related institutions should strengthen their advantages and improve their deficiencies so as to enhance tourists' overall image of the ancient city.

• 과학교육연구지
• /
• 제34권1호
• /
• pp.164-174
• /
• 2010

이 연구의 목적은 중학교 과학 생물영역의 총괄 평가 문항의 평가 목표를 블룸의 신 교육목표분류체계에 따라 분류하여 평가 목표의 특성을 파악하는 것이다. 대구지역 중학교 25개교로부터 총 1,711개의 총괄 평가 문항을 수집하여 블룸의 신 교육목표분류체계에 따라 각 문항의 평가 목표를 분석하였다. 총괄 평가 문항을 지식과정 차원의 목표분류틀로 분석한 결과, 사실적 지식에 대한 평가를 목표로 하는 문항이 대부분(67.6%)을 차지하였다. 인지과정 차원에서 표본 문항의 평가 목표는 기억하는가를 평가하는 것이 가장 우세하였다(76.1%). 문항의 주된 평가 목표들이 블룸의 신교육목표 분류체계 중 특정 영역에 치우쳐 있었고, 동일한 분류체계로 수업 목표를 분류했던 이전의 연구 결과와 비교했을 때, 수업목표와 평가 목표의 분포에 차이가 있었다. 학년별 문항의 평가 목표 수준을 분석한 결과, 학년이 올라감에 따라 변하는 인지 수준을 고려하여, 평가 목표를 선정하여야 함에도 불구하고 문항의 평가 목표에서 학년별 차이는 발견할 수 없었다.

• 대한전자공학회논문지SP
• /
• 제43권4호
• /
• pp.87-95
• /
• 2006

본 논문에서는 얼굴 영상의 에너지 분포 특성을 이용한 새로운 특정추출 방법을 제안한다. 제안된 방법은 얼굴 영상의 에너지 확률과 에너지 랩을 이용해서 데이터 차원이 축소된 유효정보의 추출 및 유효정보의 LDA 해석에 기반을 둔다. 일반적으로, 얼굴 영상은 고유한 에너지 분포 특성을 가지고 있다. 그러나 기존의 많은 DCT 기반 방법들은 이러한 얼굴 영상의 특성을 효과적으로 이용하지 못하는 단점이 있다. 제안된 방법은 이러한 기존 방법의 단점을 개선하기 위해 다음의 3단계 방법을 사용한다. 먼저, DCT 도메인에서 얼굴의 에너지 확률 개념을 정의하고, 이러한 에너지 확률로부터 얼굴의 에너지 맵을 생성한다. 마지막으로, 에너지 확률 지도에 위치한 주파수 계수들에 대한 LDA 적용 및 해석을 통하여 특정 벡터 추출 및 인식을 수행한다. 제안된 방법은 ETRI 데이터베이스에서 96.8%, ORL 데이터베이스에서 100%의 인식률을 보인다. 실험을 통하여 인식 성능의 개선뿐만 아니라, 특정 벡터의 차원 축소에도 효과가 있음을 알 수 있다.

• 한국정보통신학회논문지
• /
• 제15권3호
• /
• pp.700-712
• /
• 2011

현대의 인간은 시간과 공간에 상관없이 정보기기를 이용하여 네트워크에 접근할 수 있는 환경에 노출되어 있다. 이러한 환경에서 사용자들은 다수의 온라인 정보 기기들을 통해 정보를 수신, 입력, 가공이 가능하다. 하지만, 현대에 널리 사용되는 마우스, 조이스틱, 트랙볼 등과 같은 포인팅 시스템은 휴대가 불편하고, 사용시 손이 자유롭지 않기에 유비쿼터스 환경에서 사용하기 어렵다. 본 논문에서는 휴대 및 설치가 간편하고, 사용시 사용자의 손이 자유로운 무선 센서기반의 다차원 사용자 움직임 탐지 시스템을 구현하였다. 본 시스템은 사용자 팔 움직임을 감지하여 수신기로 전달하는 입력기와 입력기로부터 받은 데이터를 응용프로그램으로 전달하는 수신기, 수신한 데이터를 처리하여 명령을 수행하는 응용프로그램으로 구성된다. 실험을 통하여 제안된 시스템이 사용자의 팔 움직임을 정확히 탐지하고, 해당된 입력 요구사항을 충분히 수행함을 보인다.

• 한국지역사회생활과학회지
• /
• 제16권1호
• /
• pp.135-148
• /
• 2005

This study was conducted to investigate the bioavailability of calcium derived from starfish as a new calcium source. Four-week old Sprague-Dawley female rats were divided 6 groups. The rats were received experimental diets containing two kinds of Ca sources, CaCO₃ or starfish, and three levels of Ca, low (0.1 %), medium (0.5%) and high (1.0%), respectively, for 6 weeks. The parameters which related to Ca bioavailability were measured : Serum Ca concentration, Alkaline phosphatase(ALP) and GOT activities ; tissue Ca contents, bone dimension and Ca, P, Mg contents; Ca retention and apparent absorption. Starfish Ca-fed rats did not show any difference from CaCO₃-fed rats in terms of growth, food intake and FER. Serum Ca, ALP and GOT activities as well as tissue Ca contents were not different between CaCO₃- and starfish Ca-fed groups. Although dimension of femur and lumbar was not different between CaCO₃- and starfish Ca-fed rats, ash content was high in starfish Ca-fed rats. Ca and P contents of femur and lumbar were not different between both groups. Starfish Ca-fed groups showed higher Mg contents than CaCO₃-fed groups in both femur and lumbar. Ca absorption rate and retention rate were significantly higher in starfish Ca-fed rats. These results indicate that Ca derived starfish did not show any negative effect on growth and Ca metabolism of rats compared to calcium carbonate. Starfish Ca can be recommended as a good Ca source on the basis of higher Ca absorption and bioavailability.

• 디지털융복합연구
• /
• 제11권1호
• /
• pp.139-144
• /
• 2013

본 논문은 고객만족도 조사가 지니고 있는 현실적인 문제점의 개선 방법에 관한 탐색적 연구다. 고객만족도 수준이 높아질수록 만족고객의 비율이 높아지는 것은 당연한 현상이라 할 수 있는데, 실제 조사 측면에서는 만족응답으로의 쏠림현상이 두드러져, 데이터 분석의 구조적 한계와 함께 고객만족 개선안 도출의 유용성이 낮아지고 있다. 이러한 문제점을 해결하기 위해서는 만족고객을 재분류하여 보다 전략적인 의미를 도출하고 만족 고객의 불만족 요인을 찾아내기 위한 연구가 필요하다. 본 연구에서는 만족고객을 재분류를 위한 3가지 방법인 세부속성의 복합점수를 이용하는 방법, 만족/불만족 2차원 모형을 적용하는 방법, 만족 고객을 세분화하는 방법을 사례연구를 통하여 서로 비교분석하였다. 사례연구결과, 본 연구결과는 향후 고객만족도 조사가 다양하고 입체적으로 분석되어 고객만족조사의 활성화는 물론, 고객만족경영 향상을 위한 유용한 자료로 활용되리라 기대한다.