• 한국자동차공학회논문집
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• 제11권1호
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• pp.128-136
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• 2003

In today's design trend of vehicle structure, crush zone is fiequently reinforced by adding a box-shaped sub-frame in order to avoid an excessive deformation against a high-speed offset barrier such as EU Directive 96/97 EC, IIHS offset test. That kind of vehicle structure design results in a relatively monotonic crash pulse for airbag ECU(Electronic Control Unit) located at non-crush zone. As for an angular crash event, the measured crash signal using a single-axis accelerometer in a longitudinal direction is usually weaker than that of frontal barrier crash. Therefore, it is not so easy task to achieve a satisfactory crash discrimination performance for offset and angular crash events. In this paper, we introduce a new crash discrimination algorithm using an electronic X-Y 2-axis accelerometer in order to improve crash discrimination performance especially for those crash events. The proposed method uses a crash signal in lateral direction(Y-axis) as well as in longitudinal direction(X-axis). A crash severity measure obtained from Y-axis acceleration is used to improve the discrimination between fire and no-fire events. The result obtained by the proposed measure is logically ORed with an existing algorithm block using X-axis crash signal. Simulation and pulse injection test have been conducted to verify the performance of proposed algorithm by using real crash data of a 2,000cc passenger vehicle.

• 산업경영시스템학회지
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• 제17권29호
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• pp.63-78
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• 1994

Today, the problem of interrational competition has been strongly appeared and as the deflation is deep occasionally, it is sure that granting autonomous motivation of businessman or importance of self development is proposed especially. Then, which subject is included in granting autonomous motivation as that\ulcorner We must study about that subject first. First, we should study about essence of granting autonomous motivation. Granting autonomous motivation is the course of accompli¬shment of ideal human individually. Secondly, we will divide that into goal, desire and positive attitude subjectly and will study about those respectively. Contents of this theory are as below. 1. Proposal of problem 2. Basic structure of granting autonomous motivation and ability 2-1 Consideration of granting autonomous motivation 2-2 Basic structure of ability 3. The method of granting autonomous motivation 3-1 Simulation of granting autonomous motivation 3-2 Establishment of subject on granting autonomous motivation 4. Granting autonomous motivation by utilization of opportunity 4-1 Utilization of opportunity 4-2 Self-development by reading 4-3 Self development by writing 4-4 Self-development by discussion 4-5 Self development by control of health 4-6 Self-development by making the time 5. Conclusion This theory will be developed by classification as above. Reflecting many times and experiencing a skill for himself, he should teach his men the skill. There are some men not to be able to talk with, but a businessman should make his surroundings cheerful with granting autonomous motivation. If he understands the men of his surroundings with his positive attitude, all tasks of him will be achieved. Formation of question consciousness that he can study always, is needed on which is the important task in himself.

• 한국해양환경ㆍ에너지학회지
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• 제16권1호
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• pp.17-24
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• 2013

해양레저 산업의 후발주자인 국내 해양레저 산업이 국내 시장 및 세계시장에 경쟁력을 가지기 위해서는 기획, 설계, 계획과 준비 등 제품 개발 및 제조의 각종 업무에 소요되는 시간과 비용을 단축시켜 높은 수준의 시장 적응력을 확보해야 한다. 위 사항들을 만족하기 위해서는 해양레저 산업 전반을 관리 할 수 있는 통합 시스템 구축이 절대 적으로 필요한 상황이다. 유관 산업 시스템간의 유기적 연결고리를 찾아서 요구되는 통합 정보를 확보하고 이를 단순 순차적 정보의 흐름이 아닌 통합적 정보 흐름과 객체 지향적 정보 분류체계를 확보하는 것이 주요 연구 핵심 사안이다. 이를 위하여 다른 유사 산업에서 실재 정보 체계를 활용한 사례 및 산업생산에 적용된 제품수명주기관리(PLM), 제품 데이터 관리(PDM), 가상 생산(DM)과 같은 방법론을 검토 하고 이를 구성 및 적용하여 실질적으로 활용되고 있는 정보 체계 및 작업분류체계(WBS)의 사례를 연구하여 비교 한다. 이를 통하여 해양레저산업을 위한 기본적인 작업분류체계 구성을 추진하며 실재 업체에서 현재 활용중인 정보를 입력, 대입을 통하여 실증적으로 검증하고 해양 레저 산업의 고유한 영역을 추가하여 해양레저 작업 분류 체계(MLWBS)를 완성한다. 본 해양레저 작업 분류 체계를 바탕으로 여러 가지 정보체계 및 제품, 설계, 엔지니어링, 생산, 구매, 영업, 마케팅, AS, 고객지원 등에 다양한 형태의 활용이 가능 하도록 할 수 있을 것이다.

• 제어로봇시스템학회논문지
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• 제8권9호
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• pp.776-787
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• 2002

Automation of welding process in shipyards is ultimately necessary, since the welding site is spatially enclosed by floors and girders, and therefore welding operators are exposed to hostile working conditions. To solve this problem, a welding mobile robot that can navigate autonomously within the enclosure has been developed. To achieve the welding task in the closed space, the robotic welding system needs a sensor system for the working environment recognition and the weld seam tracking, and a specially designed environment recognition strategy. In this paper, a three-dimensional laser vision system is developed based on the optical triangulation technology in order to provide robots with 3D work environmental map. Using this sensor system, a spatial filter based on neural network technology is designed for extracting the center of laser stripe, and evaluated in various situations. An environment modeling algorithm structure is proposed and tested, which is composed of the laser scanning module for 3D voxel modeling and the plane reconstruction module for mobile robot localization. Finally, an environmental recognition strategy for welding mobile robot is developed in order to recognize the work environments efficiently. The design of the sensor system, the algorithm for sensing the partially structured environment with plane segments, and the recognition strategy and tactics for sensing the work environment are described and discussed with a series of experiments in detail.

• Journal of the Korean Wood Science and Technology
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• 제23권1호
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• pp.42-48
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• 1995

The purpose of this study is to evaluate the efficacy of metabolites produced form Streptomyces rimosus in controlling the growth of sapwood - inhabiting fungi. In order to carry out this task, the following specific fungi were tested : sapstain fungi - Ceratocystis pilifera, Ceratocystis piceae, and Aureobasidium pullulans ; mold fungi - Trichoderma hazianum, Trichoderma viride, Penicillium cirtrinum, and Aspergillus niger. Based on the tests, the following observations can be drawn. 1. The conidial germination of sapstain and mold fungi was completely inhibited leaving a clear zone around the paper disc treated with metabolites. The best inhibition was observed in A. pullulans plate and the least in T. viride. 2. Concentration of SB medium for the production of metabolites from St, rimosus affected antifungal activity of metabolites against sapwood - inhabiting fungi. Metabolites prepared from 1/3${\times}$SB medium showed the best activity and the least activity was observed in metabolites form 1/4${\times}$medium. 3. in vivo and in vitro test using wood blocks, treatment of pine sapwood blocks with metabolites also inhibited conidial germination and thus prevented discoloration. 4. Treatment with metabolites did not change the macroscopic structure of wood and did not cause the discoloration of the surface of wood by pigments produced form St. rimosus. In conclusion the results of this study indicate that antifungal metabloites of St, rimosus could be used for the biological control of sapstain and mold fungi.

• Physical Therapy Rehabilitation Science
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• 제6권2호
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• pp.96-104
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• 2017

Objective: The purpose of this study was to investigate the effect of the hip joint strengthening exercises using proprioceptive neuromuscular facilitation (PNF) on the clinical symptoms and the treatment effects in balance, sit to stand, and gait abilities in patients with TBI. Design: A single case study. Methods: A 13-year-old adolescent with quadriplegia and hip joint control impairment participated in this four-week training intervention. The patient, diagnosed with TBI, wastreated with hip joint strengthening exercises using PNF. In the first week, we focused on strengthening the body, relaxing the hip flexors and activating the hip extensor muscles in order to solve the patient's physical function and body structure. From the 2nd and 4th week, we improved the motivation through the task-oriented method, and then weight-bearing training of the right lower extremity was proceeded by kicking a soccor ball with the left lower extremity. The exercises were performed for 4 weeks, 5 days a week, for 60 minutes with the exercise intensity gradually increased according to the subject's physical abilities. Results: As a result of the study, the patient demonstrated improvements in the physical examination, which were evaluated before and after intervention and included the manual muscle test, modified Ashworth scale, sensory assessment, coordination assessment, Berg balance scale, 5-time sit to stand test, and the 10 meters walk test. Conclusions: The results of this case suggest that a hip joint strengthening exercise program using PNF may improve hip control ability, balance, sit to stand and gait ability in a patient with TBI.

• 한국학교ㆍ지역보건교육학회지
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• 제15권1호
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• pp.105-119
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• 2014

Objectives: This study investigates the factors influencing values on life-respect among middle school students. Methods: The participants in this study were 126 students from S middle school and Y middle school, both located in Gyeongnam province. The experimental group consisted of 40 students from S middle school, Control group-Iconsisted of 39 students from S middle school, and Control group-II consisted of 47 students from Y middle school. The experimental group was provided with 12 incidences of the life-respect education program from April 1st to June 29th. One period took 45 minutes and proceeded according to a structure of introduction, development, and consolidation. The experimental group received a life-respect education program, Control group-I received health teaching, but Control group-II didn't receive any special education except what was regularly part of their curriculum. The content of the life-respect education program included the following topics: value of life-respect, respect for human life and ethics, life-respect campaign, having a healthy mind, suicide prevention, dealing with crisis, prevention of school violence, abortion and life-respect, social weak minority consideration, death, brain death, euthanasia, life cycle and task, and forest activities. Questionnaires were administered as pre and post-tests which consisted of questions regarding death anxiety, suicide risk, and values on life-respect. The pre and post-tests were analyzed with t-tests, paired t-tests, ANOVAs, and factor analyses using SPSS 18.0. Results: 1. There was a statistically significant increase in the experimental group(p<.0001) and control group-I(p<0.05) in value and attitude about life-respect. On the other hand, it was shown that there was no difference between pre and post-test in control group-II. 2. The result of examining the differences between pre and post-tests after education on values and attitudes toward life-respect using ANCOVA showed, there was a statistically significant difference (p<0.001) among the three groups. Conclusion: the life-respect education program which was conducted over 12 meeting with middle school students had an positive effect, which can be used as basic data for fostering values on life-respect. These findings indicate that the life-respect education program this study used is effective for fostering value of life-respect and decreasing suicide risk.

• 한국산학기술학회논문지
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• 제20권9호
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• pp.451-458
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• 2019

무기체계 개발 및 운용과정에서의 신뢰도는 시스템이나 구성요소가 지정된 기간 동안 지정된 조건에서 필요한 기능을 수행하는 능력의 핵심 척도이며 임무달성의 평가를 위한 임무신뢰도는 전투의 승패를 좌우하는 중요한 지표이다. 임무신뢰도는 특정 기간 동안 주어진 임무가 이벤트나 환경상황에서 성공과 실패할 확률을 나타내며, 신뢰도 산출시 장비의 동작여부만을 고려하는 것이 아니라 시스템의 임무를 물리적 및 기능적으로 구분하여 임무의 수행 신뢰도를 산출하게 된다. 기존의 임무신뢰도는 임무에 따른 물리적인 연결만을 가지고 신뢰도 블록선도를 작성한 후 신뢰도를 산출하였다. 하지만, 현대 무기체계들은 발전하여 고도화되면서 장비 구조가 복잡해져 기능적 또는 물리적 연결에 따른 임무 구분이 필요한 경우 임무 연관성 표현이 불가하다. 이에 본 연구에서는 설계구조행렬과 인터페이스 매트릭스 기법을 사용하여 물리적 구조와 기능적 구조의 연관성을 표현하여 함정 전투체계 시스템 중 한 부분인 함포통제 시스템에 대하여 임무신뢰도를 산출하였다. 본 연구결과를 바탕으로 임무신뢰도 검증자료로 활용되기를 기대한다.

• 동남아시아연구
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• 제28권4호
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• pp.161-196
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• 2018

이 글의 목적은 미얀마 민간정부의 정치발전 양상을 결손민주주의 개념에서 분석하고, 정치발전을 지체 또는 정체시킨 주체들과 주체들 간의 상관관계를 규명하는 것이다. 나아가 이 글에서는 현재와 같은 정치구도와 행태를 돌파하여 긍정적인 정치발전을 위해 요구되는 과제를 제시하고자 한다. 2016년 민간정부가 출범했으나 권력 행사와 의사결정구조에 있어서 정부의 행동 양식은 군부 권위주의의 행태를 탈피하지 못함으로써 긍정적인 정치발전의 성과를 달성하지 못했다. 정부 차원에서 특정 인물 1인이 모든 권력을 장악하고 각 권력기관에 대한 수평적 책임을 지지 않으므로 위임민주주의와 후견민주주의가 강화된다. 국방과 치안에서 지분을 장악한 군부는 버마족 중심의 배타적 민주주의와 군부가 제정한 비민주적 헌법을 수호하며 비자유적 민주주의를 추구한다. 결손민주주의가 나타나는 근본적인 원인은 장기간 군부통치로 인해 민주적 제도를 운영할 집단의 부재, 민간에 의한 군부통제라는 민간우위의 원칙을 지킬 수 없는 권력구도의 한계로 요약된다. 따라서 미얀마 정치발전의 과제는 군부의 병영 복귀와 권위주의적 질서에 길들여진 민간정부의 권력구도와 정치행태를 민주적으로 전환하는 것이다.

• 대한토목학회논문집
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• 제32권3D호
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• pp.259-267
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• 2012

건설자동화 시스템 개발은 건설업이 당면하고 있는 여러 가지 어려움을 해결하고 급변하고 있는 건설환경을 위한 대응책으로 설득력 있는 해결책 중의 한가지로 제안되고 있다. 2006년부터 지능형 굴삭시스템 개발을 위한 연구가 진행되었다. 지능형 굴삭시스템은 작업환경 센싱, 3D 모델링, 작업계획, 작업경로계획, 무인조정 및 정보관리를 위한 다양한 기능을 갖고 있다. 본 논문에서는 지능형 굴삭시스템을 실제 현장에 적용하기 위하여 필요한 요소기술 중의 하나인 작업계획 및 작업경로계획 기능구현을 위한 공간정보모델과 작업경로 시뮬레이터를 제시하고자 한다. 기존의 자료구조인 쿼드트리나 옥트리 구조가 갖고 있는 단점을 보완하기 위하여 토공작업을 위한 새로운 자료구조를 제시하였다. 작업경로 시뮬레이터는 작업환경에 관한 정보, 토공장비에 관한 정보를 제공하며 작업자의 휴리스틱을 고려하여 효과적인 작업경로를 생성할 수 있다. 시뮬레이터에 의하여 생성된 작업경로와 굴삭기 운전자가 제안하고 있는 작업경로를 서로 비교하였다.