• 한국학교ㆍ지역보건교육학회지
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• 제7권
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• pp.1-17
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• 2006

Background: School is a primary health education setting for adolescents and the continuous support should be provided to renew school health education curriculum correspondent to cultural changes in Korean society. Objectives: This study was conducted to identify the principals and teachers' health education needs for their students and to analyze their conceptual map for health education curriculum at school. Methods: The sample size of the preliminary study was 321 of the teachers in elementary, middle, and high school, and that of the main study was 355 middle school principals and teachers over the country. The self-administered mailing survey was conducted to collect the available health education topics in the preliminary study, to identify the factor structure of the health education topics and to analyze the conceptual properties on health education with exploratory factor analysis and multidimensional scaling analysis in SPSS 12.0. Results: A total of 21 health education topics were collected from the preliminary survey and 31 topics were, comprehensively, generated for the main survey. In exploratory factor analysis, seven factors were generated in 1.0 or greater Eigen value standard. The seven factors were 'life health promotion,' 'disease prevention and drug control,' 'bulling and aggression prevention,' 'injury and sexual harassment prevention,' human-efficacy and regulation,' 'health protection for adolescence,' and 'alcohol and tobacco control.' The educational need scores were the highest in 'human-efficacy and regulation' and 'injury and sexual harassment prevention.' The two-dimensional cooperates were generated for the 31 health education topics and the two dimensional properties which divided the conceptual space were 'health-safety' for one and 'public/environmental-individual/personal' for the other. That is, middle school principals and teachers primarily, understand the health education curriculum in the sense of 'health vs. safety' and 'public/environmental vs individual/personal.' Conclusions: Health education curriculum and textbook should be developed based on teachers' needs and conditions for health education in school fields. The field-based health education programs or textbook would make more possible problem-solving health education for youth in real school fields.

• 한국농림기상학회지
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• 제18권4호
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• pp.320-326
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• 2016

기후-스마트 농업의 관점에서 농업 부문의 온실가스 배출량을 감축하기 위해서는 그 양을 정확히 산정하는 것이 갈수록 중요해지고 있다. 농업 부문 배출량의 상당 부분을 차지하는 논에서 발생하는 메탄 배출량의 정확한 산정을 위해 2010년 농림어업총조사의 전수자료와 수정된 물관리보정인자 산정법 및 그 계산 프로그램을 이용하였다. 그 결과를 이해하기 쉽도록 ArcGIS 소프트웨어를 사용하여 지도화하였다. 이와 같은 방식으로 계산된 값을 현장의 실측 자료와 비교하였을 때 큰차이가 없었으며, 이러한 결과는 이 연구를 더욱 확대할 필요성이 충분함을 보여준다. 본 연구에서 제작된 행정구역별 메탄 배출량 지도를 통해 지역적으로 나타나는 차이를 명확히 인식할 수 있으며, 주요 조절 인자에 대한 분석은 실질적인 메탄 저감 대책을 마련하는 데 중요한 과학적 근거를 제공할 것으로 기대된다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2004년도 Proceedings of ISRS 2004
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• pp.344-346
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• 2004

IKONOS 1m satellite imagery is particularly well suited for 3-D feature extraction and 1 :5,000 scale topographic mapping. Because the image line and sample calculated by given RPCs have the error of more than 11m, in order to be able to perform feature extraction and topographic mapping, rational polynomial coefficients(RPCs) camera model that are derived from the very complex IKONOS sensor model to describe the object-image geometry must be refined by several Ground Control Points(GCPs). This paper presents a quantitative evaluation of the geometric accuracy that can be achieved with IKONOS imagery by refining the offset and scaling factors of RPCs using several GCPs. If only two GCPs are available, the offsets and scale factors of image line and sample are updated. If we have more than three GCPs, four parameters of the offsets and scale factors of image line and sample are refined first, and then six parameters of the offsets and scale factors of latitude, longitude and height are updated. The stereo images acquired by IKONOS satellite are tested using six ground points. First, the RPCs model was refined using 2 GCPs and 4 check points acquired by GPS. The results from IKONOS stereo images are reported and these show that the RMSE of check point acquired from left images and right are 1.021m and 1.447m. And then we update the RPCs model using 4 GCPs and 2 check points. The RMSE of geometric accuracy is 0.621 m in left image and 0.816m in right image.

• 대한지하수환경학회지
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• 제5권4호
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• pp.215-222
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• 1998

지하수 세균 군집에 미치는 환경요인의 영향을 분석하기 위하여, 서울 시내에서 음용수로 사용하는 2개 정점과 음용수외 생활용수로 사용하고 있는 8개 정점을 대상으로 조사하였다. 물리.화학적 환경요인과 중금속의 농도, 및 세균 군집의 분포 등 40개 변수를 분석한 결과, 음용수로 사용하는 정점을 제외한 나머지 정점에서 질산성 질소와 암모니아가 용수목적별 수질기준의 기준치 이상으로 측정되었다. 총세균은 5.1~41.4$\times$$10^{5}$cells/ml 범주로, 종속영양세균과 기능성 세균군집은 0.01~29.6$\times$$10^4$cfu/ml의 범주로 조사되었다. 세포외 효소의 활성도는 0.005~11.3$\mu$M/l/hr 의 범주로 나타났고, lipase, phophatase, $\beta$-glucosidase, cellulase, chitinase, amylase 순으로 활성도가 나타났다. 정점별로 조사된 세균 군집에 미치는 환경요인의 상호관계는 대응분석(correspondence analysis)과 다차원 척도법 분석(multidimensional scaling; MDS)으로 하였으며, 그 결과 4개의 집단으로 구분되었으며, 세균 군집에 미치는 주요한 환경요인은 정점별 잠재오염원과 일치하는 양상을 보였다.다.

• 산업기술연구
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• 제20권B호
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• pp.155-162
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• 2000

Although Fuzzy Logic Controller(FLC) adopted three terms as input gives better performance, FLC is in general composed of two-term control because of the difficulty in the construction of fuzzy rule base. In this paper, a three-term FLC which is similar to PID control but acts as a nonlinear controller is proposed. To reduce the complexity of the rule base design and to increase efficiency. a simplified fuzzy PID control is induced from a hybrid velocity/position type PID algorithm by sharing a common rule base for both fuzzy PI and fuzzy PD parts. It is simple in structure, easy in implementation, and fast in calculation. The phase plane technique is applied to obtain the rule base for fuzzy two-term control and the resultant rule base is Macvicar-Whelan type. And the membership function is a Gaussian function. The frequency response information is used in tuning of the membership functions. Also a tuning strategy for the scaling factors is proposed based on the relationship between PID gain and the scaling factors. Simulation results show better performance and the effectiveness of the proposed method.

• 유통과학연구
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• 제21권2호
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• pp.35-43
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• 2023

Purpose: As Thailand seeks to become a regional startup hub, Thai startups have been acquiring growth and scalability in the last ten years. Hence, this paper examines influential factors in Thailand's growth of logistics tech startups. The conceptual framework incorporates sensing user needs, sensing technological options, conceptualizing, scaling, and stretching, co-producing, and orchestrating, business strategy, strategic flexibility, and startup growth. Research design, data, and methodology: The quantitative method was applied to distribute the questionnaire to 500 managers and above in logistics tech startups in Thailand. The sampling techniques involve judgmental, convenience, and snowball samplings. Before the data collection, The Item Objective Congruence (IOC) Index and pilot test (n=45) were employed for content validity and reliability. The data were mainly analyzed by Confirmatory Factor Analysis (CFA) and Structural Equation Model (SEM). Results: The findings revealed that sensing technological options, scaling, and stretching, co-producing, and orchestrating, and business strategy significantly influence the growth of startups in Thailand. Nevertheless, sensing user needs, conceptualizing, and strategic flexibility have no significant relationship with startup growth. Conclusions: For Thailand to accelerate its digital economy driven by tech startups, firms must emphasize influential factors to accelerate growth by providing the right tech solutions for people's lives.

• 대한한의진단학회지
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• 제15권2호
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• pp.141-148
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• 2011

Objectives: In comparison with functional dyspepsia, food accumulation is known to have wider concept. On this study, we will make a proposal on the concept of food accumulation by a statistical comparison between pyungweesan questionnaire and health related questionnaires. Methods: We studied the similarities between six factors of pyungweesan questionnaire and four health related questionnaires(Rome II criteria of functional dyspepsia, subjective symptoms of fatigue test, beck depression inventory, state-trait anxiety inventory, etc.) using multidimensional scaling. Results and Conclusions: 1. Physical-emotional axis and acute-chronic axis were labelled in a two-dimensional scaling solution. 2. Seup-dam(濕痰) factor and sik-che(食滯) factor of food accumulation were closely related to fatigue. 3. Bi-seup(脾濕) factor of food accumulation was closely related to depression and anxiety. 4. The findings suggest that a concept of food accumulation reflects some aspects of physical fatigue and emotional depression as well as dyspepsia.

• 한국추진공학회지
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• 제25권1호
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• pp.12-18
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• 2021

본 연구에서는 MT30 가스터빈 엔진의 성능 모델링을 수행하였다. 설계점을 결정하고, 상용 프로그램에서 제공하는 스탠다드 맵을 이용한 스케일링 기법으로 구성품 성능 맵을 생성하였다. 생성된 성능 모델로 탈-설계점 성능 해석을 수행하여 그 결과를 엔진 성능 덱 데이터와 비교하였다. 한 점 스케일링 기법으로 생성된 성능 모델이 성능 덱 데이터와 다소 오차가 있음을 확인하고, 성능 모델의 정확성을 높이기 위한 보정이 필요하다고 판단하였다. 따라서 고압 스풀 회전수에 따른 작동점(탈-설계점) 별 스케일링 계수를 구하는 방식으로 보정 성능 모델을 생성하여 탈-설계점 해석을 수행하였다.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 1997년도 추계학술대회발표논문집; 홍익대학교, 서울; 1 Nov. 1997
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• pp.63-66
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• 1997

This paper is concerned with the current status and the prospectus of environmental investments in the manufacturing sector. A questionnaire survey was made to identify the concentrated fields of the investments. The collected data were analyzed by a multidimensional scaling method in order to provide a reasonable interpretation on the major factors which characterize the current situation and the prospectus of the investments as well as the relative position of each respondent company in a spatial map. The result tells us most respondents tend to concentrate their attention on end-of-pipe solutions due to technological tangibility and economic efficiency, etc.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2000년도 추계종합학술대회
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• pp.480-484
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• 2000

컴퓨터 시뮬레이션을 통하여 Si-기반 n 채널 MOSFET의 채널길이에 따른 영향을 조사하였다. 이차원 유체역학적 모델을 사용하여, 다양한 게이트 길이를 가진 소자들을 실험하였다. LDD MOSFET 소자 모델을 사용하여 전류, 전압, 전계 및 임팩트 이온화를 조사·분석하였다. 이러한 소자들은 다양한 scaling 인수로 scaling되었다. 채널 길이에 따른 I-V 특성과 임팩트이온화의 효과를 분석하였다.