• 한국강구조학회 논문집
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• 제22권1호
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• pp.99-108
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• 2010

본 연구는 구조상세설계와 모델링 단계에서 활용 가능한 철골 접합부 모델링 자동화 모듈의 개발을 목적으로 한다. 이를 위해 접합부의 구조해석 결과를 3D 모델링의 입력 변수와 표준접합상세지침을 고려하여 라이브러리 D/B로 구축하였다. 구축된 라이브러리 D/B를 접합부 3D 모델링 단계에서 활용하기 위하여 상용 S/W에서 제공하는 OpenAPI 함수를 이용하여 접합부 자동 생성 모듈을 개발하였다. 개발된 모듈을 검증하기 위해 6층 규모의 철골 오피스 구조물을 대상으로 접합부 모델링을 수행하였으며, 접합부 모델링 과정에 대해 기존 프로세스와 연구 프로세스의 비교를 통해 적용성과 효율성을 검증하였다.

• 한국치위생학회지
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• 제3권1호
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• pp.45-57
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• 2003

The purpose of this study is to identify the factors affecting job stress and relationship between dental hygienists personal characteristics and them. Final purpose of this study provides the basic data of dental hygienists interventions to help dental hygienists' job stress reduction program. Data were drawn from a convenient sample of 401 dental hygienists who were working for dental clinic, general hospitals, and university hospitals in Seoul and Kyungi areas. The results were analyzed with spsswin 10.0 and the conclusion is as follow: 1. General special quality distribution of dental hygienist is 25-59 and respondent who work in the dentist's office by maiden less than was most. 2. The dental hygienists' job stress was 2.68, it indicates considerably high compare to normal another groups. 3. 'By work, feel fatigue' appeared highest by 3.60 in 5 points full marks from item of business amount connection stress. 4. Only business amount connection stress was expose that is significant in relation with job stress and individual character type. 5. Age, dependent's number, faith, character type variable appeared to keep in mind for connection factor which influence in job stress. 6. Job stress connection factor by character type was expose by variable savages significant thing 'that do work year all as dental hygienist' in A type.

• 한국강구조학회 논문집
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• 제27권3호
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• pp.299-310
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• 2015

일반적인 CFT구조는 구조적 거동이 우수함에도 불구하고 폐단면으로 인한 제작 및 가공의 번거러움, 충전성 등의 문제를 가지고 있다. 이 연구는 CFT구조의 충전성을 개선한(보의 상플랜지에는 관통다이아프램, 하플랜지에는 외측다이아프램을 적용) 기둥-단순보의 접합부에서 외측 다이아프램의 치수에 따른 구조적 거동을 살펴보았다. 변수해석을 실시하여 EP-T 타입 접합부내력 영향을 주는 이유를 찾았다. 결과적으로 원형CFT기둥-보접합부에 대한 실험 및 해석을 통하여 원형 CFT구조의 구조적 거동을 조사했다.

• Journal of the Korean Wood Science and Technology
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• 제43권5호
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• pp.652-660
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• 2015

To study the bearing characteristics of glass fiber reinforced glulam for structural design, bearing strength tests were performed. Bearing loads were applied in the direction parallel to the grains, and the holes were prepared in such a way that the bolts would bear and support all the layers. The yield bearing strengths of the glass fiber reinforced glulam were found to be similar to those of the non-reinforced glulam, and were almost constant regardless of increases in bolt diameter. The ratio of the experimental yield bearing strength to the estimated bearing strength according to the suggested equation of the Korea Building Code and National Design Specification was 0.91~1.03. For the non-reinforced glulam and the sheet glass fiber reinforced plastic glulam, the maximum bearing load was measured according to the splitting fracture of specimens under bolt. The textile glass fiber reinforced glulam underwent only an embedding failure caused by the bearing load. The failure mode of reinforced glulam according to bearing load will influence the failure behavior of bolted connection, and estimating the shear yield strength of the bolted connection of the reinforced glulam is necessary, not only by using the bearing strength characteristics but also using the fracture toughness of the reinforced glulam.

• 한국학교보건학회지
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• 제30권3호
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• pp.306-316
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• 2017

Purpose: The purpose of this study was to investigate the operational status and operational problems of health promoting model schools, particularly of the large-sized elementary schools in urban areas. Methods: The study analyzed the data of 14 large-sized elementary schools in urban areas selected from 85 health promoting model schools, an initiative led by the Ministry of Education from 2012 to 2014. Results: The study examined the operation process of health promoting schools in five stages; system development, needs survey & current status survey, school health policy development, program development & execution, and evaluation. In addition, the study discovered three key factors in operating health promoting schools and examined the status of each factor; connection with the curriculum, connection with the community, and consensus among members. Four problems were identified as operational problems: lack of research on faculty health issues, school physical environment and community resources, inadequate presentation of performance indicators, no close coordination in core task development and lack of linkage with the curriculum. Conclusion: It turned out the concept of health promoting school suggested by WHO was relatively faithfully realized in this study. Compared to small-sized elementary schools in rural areas, health promoting schools in this study showed better aspects overall. The connection with the community was good, but the connection with the curriculum was poor.

• Structural Engineering and Mechanics
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• 제88권1호
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• pp.43-52
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• 2023

This paper handles the results of an extensive parametric study on the rotational stiffness of the flexible base connection using ABAQUS program. The results of the parametric study show the relation between the applied moment and the relative rotation for 96 different base connections. The configurations of the studied connections considered different numbers, diameters, and spacing of the anchor bolts along with different thicknesses of the base plate to investigate the effect of these parameters on the rotational stiffness behavior. The results of the previous parametric research used through the whale optimization algorithm (WOA) to detect different equation formulation of the moment-rotation (M-Ɵ_r) equation to detect optimum equation simulates the general nonlinear rotational behavior of the flexible base connection considering all variables used in the parametric study. WOA is a relatively new promising algorithm, which is used in different types of optimization problems. For more verification, the classical genetic algorithm (GA) is used to make a comparison with WOA results. The results show that WOA is capable of getting an optimum equation of the M-Ɵ_r relation, which can be used to simulate the actual rotational stiffness of the flexible base connections. The rotational stiffness at H/150 can be calculated using WOA (1) method and be used as a design aid for engineering design.

• 한국운동역학회지
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• 제18권2호
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• pp.29-39
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• 2008

본 연구는 평행봉 티펠트 기술에 대한 훈련 프로그램을 개발하여 8주간 적용하고 프로그램 전과 후의 차이를 3차원 영상분석법을 사용, 운동학적으로 비교 분석을 통해 기술별 동작의 향상도 및 특성을 규명하고자 하였다. 훈련 프로그램은 다운스윙 보강운동, 업스윙 보강운동, 다운스윙과 업스윙을 연결하는 보강운동으로 구성하여 실시하였으며, 견관절을 신전시켰다가 가슴을 오목하게 빠르게 모아주는 다운스윙의 훈련으로 견관절을 신전시켜 신체중심을 후방으로 크게 하강하는 모습으로 개선되었다. 수직방향으로 빠르게 다리를 차주면서 상체를 세워주는 업스윙의 훈련결과 신체중심이 전방으로 흐르지 않으면서 수직방향으로 신체중심을 빠르게 상승시키는 모습으로 개선되었다. 업스윙의 훈련 시 상승하면서 전방으로 신체중심이 크게 이동하지 않도록 통제하면서 봉의 탄성을 이용하면서 고관절을 빠르게 신전시켜 상체를 튕겨 주는듯한 느낌으로 상승하도록 지도하여야 한다. 다운스윙에서 업스윙으로의 동작을 연결하는 훈련에서는 신체중심을 후방으로 크게 하강하였다가 빠르게 수직 상승하여 체공시간을 확보하면서 다리가 굽혀지지 않도록 지도하여야 하며, 훈련결과 체공시간의 증가로 안정된 동작으로 동작이 완성되는 모습으로 개선되었다.

• 한국통신학회:학술대회논문집
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• 한국통신학회 2004년도 하계종합학술발표회논문초록집
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• pp.274-274
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• 2004

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1989년도 한국자동제어학술회의논문집; Seoul, Korea; 27-28 Oct. 1989
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• pp.520-523
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• 1989

MAP(Manufacturing Automation Protocol), Network Protocol for FA has 7 Layer Structure of OSI. Being an Application Layer Protocol for Communication Interfaced with the Actual Programmable Devices, MMS(Manufacturing Message Specification) Consists of Three Factors of Services, Interfaces, and Protocol. For Details, It Classifies with the Followings ; Connection/Context Management, Remote Variable Access, Semaphore Management, File transfer and Management, Program UP/DOWN Load, Remote Program Fxecution. In this Paper Designing MAP Network Station of Programmable Device, we Analyze the Protocol of MMS, and Realize the State Diagram of each Services and Propose the Model of MMS Function Call Instructions.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 심포지엄 논문집 정보 및 제어부문
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• pp.417-419
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• 2007

In this paper we have designed a monitoring and controlling system, which rainwater harvests. Atmega 128 microprocessor family is used for the monitoring and controlling of the system. Through the Internet, the rainwater bank system can be monitored and controlled by using JAVA program. Monitoring and controlling of the system are also possible without Internet connection.