• 정보처리학회논문지B
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• 제15B권4호
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• pp.269-274
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• 2008

본 논문에서는 스테레오 영상(stereo image)을 이용하여 스네이크 기반 객체 추출 방법들이 강력한 외부 에너지(external energy)를 생성할 수 있도록 새로운 스테레오 일치화 방법을 제안한다. 제안하는 방법의 첫 번째 단계로 한 쌍의 스테레오 영상에서 다중 레벨 에지 지도를 만들고 상관관계를 파악하여 에지 기반의 변위 지도(disparity map)를 만든다. 이때 비슷한 세기를 가진 에지를 정합(matching)에 이용한다. 이 후 영상 내에서 추출하고자 하는 객체의 에지 지도를 얻기 위하여 다음의 과정을 거친다. 왼쪽 영상에서의 관심 영역의 에지 패턴을 얻고 다시 오른쪽에서도 똑같이 패턴을 얻어낸 후 두 패턴을 정합하여 객체의 변위(disparity)를 얻어낸다. 이렇게 얻어진 에지 지도를 이용하여 스네이크에서 사용될 외부 에너지를 만든다. 제안하는 방법을 이용하여 두 종류의 스네이크 모델에서 테스트를 한 결과 기존의 방법에 비해 더 나은 결과를 얻게 되었다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.2042-2047
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• 2005

Many service robots which is interacting with human at home and in buildings have been developed. Few of them are shown in of the United States and of Japan. These robots are supposed to have a powerful indoor navigation performance in places where human beings live and work. The overall capability of service robots to move around in this environment is called environment correspondence, in which localization problem to find the accurate position and orientation is the most critical problem. While users set up a proper or a best environment for industrial robots, but for services robots at home and in buildings, it is very difficult to change the environment for robots. The expanded workspace due to mobility is difficult to be covered by means of those used for industrial robots because the cost increases and human beings do not want their environment to be changed for robots. This fact has made many researchers study efficient and effective environment correspondence problems. Among these problems, localization is the most difficult. Goal of localization study includes (1) Accurate detection of position and orientation (2) Minimum cost of the additional devices (3) Minimum change of human environment. In this study, as a solution of the above, we propose "Artificial Stars" which are attached on room ceiling as landmarks. In addition, we solve an adoption problem raised when a robot is delivered to a customer site and before it can perform its full navigation capability. We call this as "Initialization Problem" of service robots. We solve the initialization problem for both cases of environment with the map and without map. The proposed system is experimented and has shown how well it handles the initialization problem.

• 산업경영시스템학회지
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• 제17권30호
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• pp.185-192
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• 1994

The complexity and consistency are important factors that affect human information processing in use of product. In this study, complexity and consistency of product(remote controller) are measured by Task Action Grammar(TAG) model. Also, new design alternative of the user interface is presented and evaluated. The results show that the consistent system and the good correspondence between hierarchical structure of system and user's mental model lead to the reduction of errors and enhanced user's performance.

• 한국보건간호학회지
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• 제18권1호
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• pp.119-131
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• 2004

This study was the research of health promoting behavior of the 6th grade students of elementary school and general characteristics, health related characteristics and health promoting behavior following the health education were analysed. The performance of health promoting behavior related to the prevention of infectious diseases showed the highest score above all. The school, which received health education by the scheduled education course, home correspondence, and health broadcasting education, showed higher health promoting behavior performance after the health education. On the basis of the results of this study, health promotion program development is required to accomplish health promoting behavior among the elementary school students.

• Smart Structures and Systems
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• 제15권3호
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• pp.665-682
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• 2015

Structural identification or St-Id is 'the parametric correlation of structural response characteristics predicted by a mathematical model with analogous characteristics derived from experimental measurements'. This paper describes a St-Id exercise on Humber Bridge that adopted a novel two-stage approach to first calibrate and then validate a mathematical model. This model was then used to predict effects of wind and temperature loads on global static deformation that would be practically impossible to observe. The first stage of the process was an ambient vibration survey in 2008 that used operational modal analysis to estimate a set of modes classified as vertical, torsional or lateral. In the more recent second stage a finite element model (FEM) was developed with an appropriate level of refinement to provide a corresponding set of modal properties. A series of manual adjustments to modal parameters such as cable tension and bearing stiffness resulted in a FEM that produced excellent correspondence for vertical and torsional modes, along with correspondence for the lower frequency lateral modes. In the third stage traffic, wind and temperature data along with deformation measurements from a sparse structural health monitoring system installed in 2011 were compared with equivalent predictions from the partially validated FEM. The match of static response between FEM and SHM data proved good enough for the FEM to be used to predict the un-measurable global deformed shape of the bridge due to vehicle and temperature effects but the FEM had limited capability to reproduce static effects of wind. In addition the FEM was used to show internal forces due to a heavy vehicle to to estimate the worst-case bearing movements under extreme combinations of wind, traffic and temperature loads. The paper shows that in this case, but with limitations, such a two-stage FEM calibration/validation process can be an effective tool for performance prognosis.

• 간호행정학회지
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• 제16권3호
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• pp.286-294
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• 2010

Purpose: The purpose of this study was to identify the effects of nursing competency of nurses on job satisfaction and nursing performance. Method: Using a structured questionnaire, data were collected from 368 nurses. Descriptive statistics, t-test, ANOVA, Scheffe test and pearson correlation coefficient with SAS package were used for data analysis. Results: The total mean score for nursing competency was 2.65, with scores for subcategories as follows: ethical competency 2.74, personal competency 2.65, esthetical competency 2.64, and scientific competency 2.61. The mean score of total job satisfaction was 3.18 on a 5 point scale, and nursing performance was 2.97 on a 4 point scale. Total nursing competency and total subcategories of nursing competency perceived by nurses were positively related to job satisfaction and nursing performance. Conclusion: In conclusion, nursing competency of nurses influence job satisfaction and nursing performance. With these result, it is necessary to concentrate on improving nursing competency of nurses to increase job satisfaction and nursing performance.

• 방송공학회논문지
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• 제17권2호
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• pp.305-315
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• 2012

두 카메라 혹은 다수의 카메라에서의 컬러 보정은 이후 알고리즘의 성능 향상 및 양안식 3D 카메라에서 매우 중요한 기술이다. 최근 컬러 보정 방법들이 다수 제안되었지만 이 방법들의 결과에 대한 정확한 측정 방법이 많지 않으며 기존의 측정 방법은 두 영상이 카메라의 위치에 따른 서로 다른 장면을 가지고 있을 경우 적합하지 않을 수 있다. 본 논문에서는 컬러 보정을 위한 컬러 간의 차이 측정 기법을 제안한다. 이 기법은 대상이 되는 두 영상의 장면이 일치하지 않는 경우를 고려하여 대응점 검색을 통해 두 장면간의 같은 컬러를 가져야 하는 대응점을 찾고 이 대응점 주위의 영역으로부터 통계치를 계산하여 컬러의 차이를 계산한다. 이 경우 두 영상의 위치 변화를 하나의 기하학적 변환으로 설명하는 기존 방법에서 생길 수 있는 대응점간의 불일치를 고려할 수 있다. 또한 대응점들이 영상의 모든 영역을 포함하지 않을 수 있기 때문에 전체 영상의 통계치를 계산하여 컬러의 차이를 측정한다. 최종적인 컬러의 차이는 대응점 기반과 전체 영상 기반의 컬러 차이의 가중치의 합으로 결정되며 이 가중치는 대응점 기반의 컬러 비교가 영상 내의 얼마만큼의 영역을 포함하는지에 따라서 결정된다.

• 수산경영론집
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• 제47권4호
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• pp.15-30
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• 2016

Changes in marketing environment have made it feasible for functions and roles of marketing subjects who participated in marketing routes to be changed. However, there has not been a study to prove it or to deal with newly required functions. Hereupon, this study has specifically investigated and analyzed marketing functions and performance on marketing associates for seafood in Busan in order to identify how marketing functions influenced on marketing performance. Marketing function might differently influence on the performance depending on the difference of business type. Results of verifying the hypothesis are as follows. As for variables that influenced on wholesaler groups, marketing, product development+investment, information-sharing, and trade functions turned out to be influential. Among wholesaler groups, marketing, sorting, collection, market frontier+product development, integral distribution, information-sharing, and finance functions turned out to be influential. In addition to these basic results, another difference industries, restrictive range of activities, the differences in handling goods, such as by correspondence of the results to changes in the distribution environment, from the results of the present study it is possible to guess.

• 대한기계학회논문집B
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• 제22권8호
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• pp.1173-1182
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• 1998

A throughflow analysis program for axial flow turbines is constructed, which can handle not only the two-dimensional multi-streamline (streamline curvature) method but also the one-dimensional mean line method. Calculations are performed for single stage and multi-stage axial flowturbines. For a wide operating range, the performance and flow field calculated by the present streamline curvature method are close enough to the test data. It is also revealed for the single stage turbine that the present analysis leads to far better correspondence with the experiment than other researchers" throughflow analyses. A special focus is put on the comparison of the results between the streamline curvature analysis and the mean line analysis. It is found that the mean line analysis can not predict the performance for highly off-designed conditions as accurately as the streamline curvature method, which shows the importance of considering the spanwise variation of loss and flow.

• The Journal of the Acoustical Society of Korea
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• 제14권2E호
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• pp.65-72
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• 1995

주파수 응답 특성에 근거하여 스피커의 주관적인 성능을 평가하는 알고리듬을 제시하였고, 이 알고리듬에 의한 평가를 청취 실험과 비교하여 보았다. 청취 실험과 비교한 결과, 본 알고리듬에 의한 평가가 주관적 평가에 상당히 근접한 것을 볼 수가 있었다.