• Journal of rehabilitation welfare engineering & assistive technology
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• v.7 no.2
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• pp.91-99
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• 2013

The purpose of this study was to investigate the muscular activity and muscle strength for swing track of upper limbs during rowing exercise. Subject was all twenty healthy adults and they were divided into linear exercise group and elliptical exercise group in random. Subjects performed rowing exercise 3-times for a week and performed all 8-weeks. We measured realtime-surface EMG. Also we measured joint torque of elbow, ankle and lumbar in subjects using BIODEX. The result showed that when rowing exercise, elliptical track exercise had higher muscular activity in trapezius, deltoid, erector spinae, rectus femoris, biceps femoris, gastronemius than linear track exercise on more many muscle of upper and lower limbs. Also elbow joint torque and lumbar joint torque was more higher too. but linear exercise also had higher muscular activity in multifidus, tibilalis anterior than elliptical track exercise. According to this experiment, we found out that elliptical track was more efficient than linear track.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.34 no.11
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• pp.1575-1580
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• 2010

Recently, the development of bio-mimetic underwater vehicles that can emulate the characteristic movements of marine fish and mammals has attracted considerable attention. In this study, the motion of the batoid (i.e., cownose ray) fin that facilitates excellent cruising and maneuvering during underwater movement has been studied. The velocity achieved and distance covered with each fin movement are numerically studied. A fluid-structure interaction method is used to perform 3D time-dependent numerical analysis, wherein an adaptive mesh is employed to account for the large deformation of a fin interacting with a fluid. The results of a preliminary study show that the thrust of a ray fin is highly dependent on the frequency. Further, once the fin amplitude required for generating a given thrust is evaluated for the conditions experienced by an actual ray, the frequency and amplitude values for achieving better thrust are determined.

• Korean Journal of Social Welfare
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• v.58 no.3
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• pp.195-221
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• 2006

The present study has a goal of investigating the effects of self-efficacy and facet Job Satisfaction on global job satisfaction in the Workers of Residential Facilities. As a result of analyzing the data of 269 participants, we obtained three factors of self-efficacy: competence, self confidence, and propulsion. Significant 7 factors of global job satisfaction are social recognition, job itself, relationship of clients, salary, relationship of superiors, working condition, and propulsion. And both facet job satisfaction and turnover intention are influenced upon social recognition, salary, and relationship of superiors. Also, facet job satisfaction is affected by job itself and relationship of clients, but turnover intention is affected by working condition and propulsion. This article concluded with a discussion of implications of job satisfaction on quality of welfare service along with current research imitations and future research themes and tasks.

• Proceedings of the KSR Conference
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• 2009.05a
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• pp.1498-1508
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• 2009

Recently, the expansion of roads are necessary because the population and vehicles have rapidly increased, but those are restricted because of the limited site. JES(Jointed Element Structure) method is the method of the new cross-structure, which is element-traction method which draws and excavates elements under the existing structure with high accuracy within a short time. Also JES(Jointed Element Structure) method has a facility of the economical execution, a small effect on the train-service during construction period and no limit of the crossing length under the trade In this study, the tractive force and settlement are compared with the upper element, side wall element and the lower element respectively in the section which the JES method is applied In the case of element located at left side wall, the tractive force measured by a guage is double or more than the tractive force calculated by a formula. It is expected that many boulder contented in the ground contrary to the site investigation data cause high tractive force. For comparison of the settlement, the settlement as excavating the upper element is the largest in all steps. It is expected that this is the same as the cause of high tractive force. Also in this study, the practical use of the JES method when some under pass structures are extended in the future is studied.

• Proceedings of the CALSEC Conference
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• 2000.08a
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• pp.385-401
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• 2000

◆ 최고경영층의 관심과 적극적인 지원 ▶ 추진력 부여와 투자지원 ◆ 지식경영 추진을 위한 충분한 자원확보 ▶ 충분한 인력 및 예산 확보 ◆ 팀장 및 임직원의 적극적인 참여 유도 ▶ TFTeam ＋ XXXX팀＋XXX팀 ▶"XXXX가 주체"라는 의식 필요 ◆ 지식 공유 및 활용에 우호적인 조직 분위기 조성 ;KM활성화 방안(Change managing program) ▶ 홍보 및 교육확대 ▶ 신바람 나는 평가와 보상 ◆ 시스템이 아니라 지식중심으로(중략)

• The Microorganisms and Industry
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• v.16 no.3
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• pp.32-35
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• 1990

구강 미생물에 관한 연구의 추진력은 2개의 가장 빈번한 질병인 치아우식(우식 또는 충치)과 치주질병이 치아균태(치태)(dental bacterial plaque)와 연관이 있다는 발견에서 나오게 되었다. 이 질병들은 일상 음식물, 구강의 상주균, 그리고 숙주사이의 복잡한 상호작용 등으로 생긴다. 따라서 이 질병들의 발병과정을 연구하기 위해서 구강 생태학의 이해는 필수적이다.

• The Science & Technology
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• v.33 no.1 s.368
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• pp.12-13
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• 2000

우리의 첨단기술은 선진국과는 다르다. 다른 나라에서 수입하는 모든 기술을 우리의 첨단기술이라 할 수 있다. 우리의 모든 발전과 계획의 전제는 '수출'에서 출발해야하며 이것이 국가정책의 기본전제요 출발점이기도 하다. 우리의 과학기술 정책도 이러한 기본 전제와 출발점의 핵심에 서서 그 강력한 추진력의 역할을 해야한다.

• 전기의세계
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• v.43 no.5
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• pp.30-35
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• 1994

리니어모터의 추진력만을 이용하고, 지지 및 안내는 차륜에 의하는 차륜지지식 리니어모터카는 회전형에 비해 모터의 높이가 상대적으로 낮아지는 점 등의 장점에 의해, 지하철 및 신교통시스템에의 적용을 목적으로 개발되어, 외국에서는 이미 실용화 단계에 들어서 있다[8-10]. 이하에서는 차륜지지식 리니어모터카의 특징 및 개발동향 등에 대해 설명한다.

• 프린팅코리아
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• s.16
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• pp.110-113
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• 2003

21세기 디지털시대에 즈음하여 인쇄출판분야에는 과거의 아날로그 제작시스템에서 미래지향적 디지털 커뮤니케이션 서비스로 이행하는 거대한 변혁이 발생하고 있다. 이러한 구조적 변화는 테크놀로지, 인프라, 시장, 비즈니스 조직, 프로세스, 기술(skill) 등에 직접적인 영향을 미치고 있다. 특히 경제적 추진력이 이러한 전환을 강력하게 밀어붙이고 있는데, 이는 과거 데스크탑이 창출한 혁명보다 더한 충격으로 다가오고 있다.

• Defense and Technology
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• no.9 s.163
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• pp.51-57
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• 1992

국내 항공산업의 진흥을 위해서는 내수시장의 확대와 개발사업추진, 미래기술개발에의 투자와 동시에 산업구조에 대한 일관성있는 정책의 유지와 장기계획에 의한 강력한 추진력이 요구됩니다. 또한 이와함께 기술개발기금의 조성문제와 기술인력 양성, 항공산업정책 전담부서의 설치 등이 현안 주요과제 입니다