• 한국콘텐츠학회논문지
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• 제12권3호
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• pp.171-180
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• 2012

이 연구의 목적은 대학 무용전공자의 셀프리더십과 인지적 유연성과의 관계를 분석하고, 이러한 결과를 무용지도 현장에 유용한 정보를 제공하는데 있다. 연구의 대상은 전국의 4년제 대학 무용학과에 재학 중인 무용전공자들이며, 최종분석에는 256개의 자료가 사용되었다. 가설검증을 위한 분석 방법은 다중회귀분석을 통하였으며, 유의수준은 ${\alpha}$=.05 수준에서 실시하였다. 그 결과 다음과 같은 결론을 얻었다. 첫째, 셀프리더십의 하위요인 중 건설적 사고패턴 셀프리더십은 인지적 유연성의 하위요인인 다양성선호 유연성에 긍정적인 영향을 미쳤다. 그러나 행위중심, 자연적 보상 셀프리더십은 다양성선호 유연성에 영향을 미치지 않았다. 둘째, 셀프리더십의 하위요인 중 자연적 보상과 건설적 사고패턴 셀프리더십은 인지적 유연성의 하위요인인 복잡성선호 유연성에 긍정적인 영향을 미치며, 특히 건설적 사고패턴 유연성이 매우 강한 영향력을 행사하는 것으로 나타났다. 그러나 행위중심 셀프리더십은 복잡성선호 유연성에 영향을 미치지 않았다.

• Structural Engineering and Mechanics
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• 제13권5호
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• pp.557-568
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• 2002

For the evaluation of the capability of a tubular member of an offshore structure to absorb the collision energy, a simple method can be employed for the collision analysis without performing the detailed analysis. The most common simple method is the rigid-plastic method. However, in this method any characteristics for horizontal movement and rotation at the ends of the corresponding tubular member are not included. In a real structural system of an offshore structure, tubular members sustain a certain degree of elastic support from the adjacent structure. End fixity has influences in the behaviors of a tubular member. Three-dimensional FEM analysis can include the effect of end fixity fully, however in viewpoints of the inherent computational complexities of the 3-D approach, this is not the recommendable analysis at the initial design stage. In this paper, influence of end fixity on the behaviors of a tubular member is investigated, through a new approach and other approaches. A new analysis approach that includes the flexibility of the boundary points of the member is developed here. The flexibility at the ends of a tubular element is extracted using the rational reduction of the modeling characteristics. The property reduction is based on the static condensation of the related global stiffness matrix of a model to end nodal points of the tubular element. The load-displacement relation at the collision point of the tubular member with and without the end flexibility is obtained and compared. The new method lies between the rigid-plastic method and the 3-demensional analysis. It is self-evident that the rigid-plastic method gives high strengthening membrane effect of the member during global deformation, resulting in a steeper slope than the present method. On the while, full 3-D analysis gives less strengthening membrane effect on the member, resulting in a slow going load-displacement curve. Comparison of the load-displacement curves by the new approach with those by conventional methods gives the figures of the influence of end fixity on post-yielding behaviors of the relevant tubular member. One of the main contributions of this investigation is the development of an analytical rational procedure to figure out the post-yielding behaviors of a tubular member in offshore structures.

• 산업경영시스템학회지
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• 제20권43호
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• pp.1-16
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• 1997

This paper improves the autonomy for supplier's schedule and the flexibility of the final assembly line. The final assembly line is a single work station and each product taking different assembly time is considered. In the assembly schedule, the heuristic method based on the goal chasing method is used. Consequently, suppliers can independently determine their output rates and thus, change their workload pattern according to their needs and priorities. Moreover, this flexibility can help to avoid expensive final-assembly-line stoppages in case of sudden part supply disruptions. The sequencing method can be easily implemented into an existing just-in-time system. In addition, the mathematical model was formulated and the algorithm was explained through the flow chart. The numerical example was given and the efficiency of this method is shown through the analysis of computational results of that example.

• 대한간호학회지
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• 제26권2호
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• pp.372-386
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• 1996

Recently, the ratio of elderly in the population are fast growing due to socio-economical development and the better medical service. Proportionally, the health problems in elderly are increasing, too. Medical professionals must try so that the elderly have the better life through health promotion and disease prevention as well as disease treatment. This study evaluated the effect of walking exercise program on the cardiorespiratory function and the flexibility in the elderly women. The design of research was one group pretest-posttest design. The subjects were eleven elderly women over sixty years old to live in K-city, Kyonggi-do. The type of exercise was walking, which was the most popular exercise in questionnaire. The exercise intensity was 40％∼60％ of the target heart-rate by Karvonen's method and maintained by the heart-rate monitor. The exercise period was five weeks and the exercise frequency was three times per week. The exercise duration was forty minutes at first and gradually increased up to an hour. In order to evaluate the effect of walking exercise, we measured VO/sub₂ max, resting heart -rate, systolic/diastolic blood pressure, FVC, FEV/sub₁, the flexibility before and after the five week's exercise program. The data are analyzed by the paired t-test and Wilcoxon signed rank test using SAS package. The results are as follows : 1) The hypothesis that cardiorespiratory function will be improved was partly supported. In VO/sub₂ max（p＝0.0001）, resting heart-rate（p＝0.0030）, systolic/diastolic blood-pressure（p＝0.0387／ p＝0.0024）, there was significant difference. FVC and FEV/sub₁ were increased after the exercise, but there were no significant difference. 2) The hypothesis that the flexibility will be improved was supported. There was significant difference in the flexibility（p＝0.0140）. As the further study, it is necessary to reevaluate the effect with more refined design. We also need to try meta-analysis about the results of previous studies obtained in the experimental setting and compare our result obtained in the field setting with them.

• 한국융합학회논문지
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• 제11권2호
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• pp.281-288
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• 2020

본 연구의 목적은 청소년 선수들의 긍정적 사고와 대처유연성 및 소진의 구조적 관계를 검증하는 것이다. 연구대상은 청소년 선수 333명이었다. 자료처리는 SPSS 20.0과 AMOS 20.0을 이용하여 전체연구 단위의 적합도 검증을 확인한 후 가설검정을 실시하였으며, 그에 따른 결과는 다음과 같았다. 첫째, 청소년 선수들의 긍정적 사고는 대처유연성의 하위요인 모두에 유의한 영향을 미치는 것으로 나타났다. 둘째, 대처유연성의 지각된 대처자원과 대처행동 유연성은 소진에 부적인 영향을 미치는 것으로 나타났다. 셋째, 긍정적 사고는 소진에 유의미한 영향을 미치지 않는 것으로 나타났다. 결론적으로 긍정적 사고가 개인 내면의 정보에 토대하는 변인임에도 불구하고 긍정적 사고가 심리적 소진에 직접적인 영향을 미치지는 않았지만 대처유연성을 통해 소진이 예방될 수 있음을 확인하였다.

• 한국임상보건과학회지
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• 제4권3호
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• pp.644-651
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• 2016

Purpose. This study was to investigate the change of dynamic balance and flexibility for normal group, using skater and sprinter exercise program of PNF pattern. Method. In this study it was participated twenty-one subjects. Experimental group worked skater and sprinter pattern exercise with Thera-band or without Thera-band each 40 times. Evaluation of dynamic balance and flexibility(using the Functional Reach Test and Fingertrip To Floor Test) were carried out before and after the exercise. Result. In dynamic balance it was observed to significant change except first measure and flexibility was observed to all measures significantly(p<.05). Conclusion. Skater and Sprinter pattern exercise is effective to improve for dynamic balance and flexibility. However, the experimental group is small sample size of normal adult. therefore, It should be carefully considered in generalizing the results to disabled person.

• 한국운동역학회지
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• 제30권3호
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• pp.275-283
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• 2020

Objective: The purpose of this study was to investigate the effect pf flexibility of hip flexor muscles on a conventional deadlift movement. Method: Eighteen healthy male were participated in this study and were divided into normal group (NG: age: 24.0±1.8 yrs, height: 174.5±2.37 cm, body mass: 74.4±5.5 kg, 1RM: 138.0±23.8 kg) and restricted group (RG: age: 24.6±1.7 yrs, height: 171.5±5.3 cm, body mass: 74.0±5.7 kg, 1RM: 137.5±18.3 kg) by Thomas test, which measure flexibility of hip flexor muscles. A 3-dimensional motion analysis with 8 infrared cameras and 3 channels of EMG was performed in this study. A two-way ANOVA (group x load) with repeated measure was used for statistical verification. The significant level was set at α=.05. Results: RG revealed significantly increased muscle activation in erector spinae on 70% and 90% of 1RM and decreased muscle activation in gluteus maximus on 90% of 1RM compared to NG (p<.05). For the muscle activation ratio for agonist to synergist, erector spinae showed the difference in 90% of 1RM while hamstring was observed differences in all loads (p<.05). Conclusion: Our results indicated that hip flexibility affects conventional deadlift movement. Therefore, it is necessary to assess the flexibility of the hip flexor muscles before performing the movement and, as needed, to train to address the lack of flexibility.

• 한국건설관리학회논문집
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• 제10권2호
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• pp.84-92
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• 2009

최근 가변성능에 관하여 공간, 재료, 구조, 공법 등 건설 산업 전반에 걸쳐 많은 연구가 진행 중이며, 이와 더불어 공동주택의 노후화 문제로 인하여 건축요소기술의 개발이 가속화되고 있다. 이에 따라 본 연구에서는 최근 사회적으로 부각되고 있는 가변성능에 관한 공동주택의 요소기술 선정 및 대상사례를 중심으로 한 설문조사와 전문가 의견을 거쳐 건축요소기술의 평가항목을 1차적으로 선정하고자 한다. 그리고 선정된 건축요소기술 항목 중에서 타당성 및 객관성 검증절차를 통하여 건축요소기술을 재정립 및 분류하고, 최종적으로 적용 가능한 다양한 건축요소기술 가운데 우선순위가 높은 항목들을 결정하여 분석 및 평가함으로써 향후 장수명 공동주택의 가변성능향상을 위한 지침을 제시하고자 한다.

• 대한산업공학회지
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• 제5권2호
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• pp.15-20
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• 1979

Information on the future availability of invested funds provides a decision maker with additional insight into the characteristics of alternatives in sequential investment analysis. The flexibilty to pursue newly emergent investment opportunities is an important property of decision alternatives that describes the future mobility of invested funds. The primary purpose of this paper is to propose a method for measuring flexibility using the concept of negative project balance with project abandonment option.

• The Journal of the Acoustical Society of Korea
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• 제20권2E호
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• pp.51-58
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• 2001

Equations of motion of an engine mount system including foundation flexibility are derived. Forced vibration analysis is carried out for the given engine mount system excited with the unbalanced force and moment. A new optimal design method for the engine mount system is proposed, in which vibration characteristics of the chassis frame structure are considered as design parameters.