• 전력전자학회:학술대회논문집
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• 전력전자학회 2001년도 Proceedings ICPE 01 2001 International Conference on Power Electronics
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• pp.321-325
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• 2001

Servo drives with microcomputer control provide the possibility of using modem and sophisticated control algorithms. As an additional feature it is possible to implement parallel and/or redundant software and hardware structures to realise safe motion or similar security functions. Unfortunately microcomputer control also has some impact on the behaviour of servo drives. Control algorithm, cycle time, sensors and interface have to be perfectly synchronised. Special control schemes are necessary on the line side (power supply) to meet the actual requirements concerning EMC. This contribution presents experiences and results obtained from a modem digital drive system pointing out the influences of low and high accuracy position sensors and the interdependencies mentioned above.

• 아동학회지
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• 제34권1호
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• pp.161-173
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• 2013

This study explored the relationships between parenting behavior, preschooler's effortful control, and social adjustment. The subjects were 351 preschoolers(174 boys, 177 girls) and their parents. The major results of this study were as follows. First, there were significant relationships among the factors analyzed in this research, namely, affectionate parenting behavior, preschooler's effortful control, and social adjustment. Second, preschooler's effortful control mediated the effects of affectionate parenting behavior upon preschooler's social adjustment. In conclusion, this study revealed that parents' affectionate parenting behavior and a preschooler's effortful control make a significant impact on the level of the preschooler's social adjustment. Based on th findings of this investigation, the implications of the preschooler's effortful control were also discussed.

• 수산해양기술연구
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• 제33권2호
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• pp.141-148
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• 1997

This paper is concerned with the vibration control of multi-layer structure for ultra-tall buildings and main tower of large bridge etc. We have modeled the multi-layer structure with the distributed mass system as the lumped mass system of two-degree-of-freedom structure and made experimental equipment. The LQ optimal control theory is applied to the design of the control system. The designed control system is simulated by computer. As a result, the LQ regulator showed good vibration control performance with impact excitation.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2011년도 제37회 추계학술대회논문집
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• pp.254-257
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• 2011

지상시험 모델용 달착륙선에 사용되는 추진시스템은 기체의 착륙 속도를 감소시키기 위한 Descent Control Thruster (DCT) 와 착륙 과정에서의 자세제어를 위한 Attitude Control Thruster (ACT) 등 두 종류의 추력기 모듈이 장착 되어 진다. 본 논문에서는 수치해석을 이용하여 착륙선의 특성상 좁은 공간에서 배치된 DCT 간에 발생 될 수 있는 플룸의 간섭 효과에 의한 영향과 지면에 근접 할 경우 발생 될 수 있는 영향에 대해 분석 하였다.

• 아동학회지
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• 제36권1호
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• pp.47-64
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• 2015

The purpose of this study was to examine the relationships between parents' affectionate parenting behavior, preschooler's effortful control, and conscience. In this study, the subjects consisted of 335 preschoolers ($M_{month}=65.86$) and their parents. The major results of this study were as follows. First, there were positive correlations between parents' affectionate parenting behavior, preschooler's effortful control, and conscience. Second, preschooler's effortful control mediated the effects of affectionate parenting behavior upon preschooler's conscience. Third, preschooler's effortful control(Time 1) had effects upon conscience(Time 2). In conclusion, this study revealed that parents' affectionate parenting behavior and preschooler's effortful control can have a significant impact on the level of preschooler's conscience.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 1997년도 춘계학술대회논문집; 경주코오롱호텔; 22-23 May 1997
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• pp.293-300
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• 1997

This paper is concerned with the vibration control of multi-layer structure for ultra-tall buildings and main tower of large bridge etc. We have modeled the multi-layer structure with the distributed mass system as the lumped mass system of two-degree-of-freedom structure and made experimental equipment. The H$_{\infty}$ control theory is applied to the design of the control system. The designed control system is simulated by computer. As a result, the designed H$_{\infty}$ controller showed good vibration control performance to impact excitation and the good frequency response.e.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 추계학술대회 논문집
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• pp.1327-1332
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• 2008

Nowadays, the technology development of communication and system engineering should impact on the Train Control System(TCS). The one of main developments in TCS is the Communication Based Train Control(CBTC), which does not depend on the track circuit. Currently, there are the project to modernize TCS as CBTC system from the track circuit system around the world. In Korea, there are the new CBTC system revenue projects such as Busan-Gimhae LRT, Sin-Bundang Line, and so on. There is also Government project called Maglev Line in Daejeon, which is applied CBTC system. Through the examples of world TCS renovation, it is expected to modernize the track circuit TCS system as CBTC system in Korea. Therefore, we would express the advantage of developing from the traditional TCS system to CBTC TCS system.

• PNF and Movement
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• 제13권4호
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• pp.203-213
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• 2015

Purpose: Deficits in lower-extremity function and trunk control ability have a negative impact on individuals with hemiplegia. This case report aimed to describe the effect of trunk stability exercises using proprioceptive neuromuscular facilitation (PNF) on trunk control ability, balance, and gait in a patient with hemiplegia. Methods: A 77-year-old man with hemiplegia and trunk and lower extremity impairment participated in this four-week training intervention. Results: The patient demonstrated improvements in trunk control ability, balance, and gait performance. Outcome measures (Fugl-Meyer Assessment Lower Extremity (FMA-LE), Trunk Control Test, Berg Balance Scale, Timed Up and Go test, 10 Meter Walk test) were measured before and after the training program. Conclusion: The results of this case suggest that a trunk stability exercise using a PNF program may improve trunk control ability, balance, and gait in a patient with hemiplegia.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2024년도 제69차 동계학술대회논문집 32권1호
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• pp.213-214
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• 2024

본 연구는 국내 금융(보험)영업조직을 대상으로 영업조직의 통제유형에 따라 조직구성원들의 조직몰입과 지식공유 및 활용, 경영성과에 어떠한 영향을 주는지를 살펴보고자 하는 실증연구이다. 본 연구에서는 통제를 산출통제(Output Control), 과정통제(Process Control), 사회통제(Social Control)로 구분하여 통제유형에 따라 금융영업조직 내 구성원들의 조직몰입과 조직 내 지식공유 및 활용, 경영성과에 어떠한 유의한 영향을 미치는지 실증분석을 통하여 알아보고자 한다.

• International Journal of Advanced Culture Technology
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• 제12권3호
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• pp.250-256
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• 2024

This study aims to examine the impact of perceived control on individuals' state boredom. We hypothesized that perceived control is negatively correlated with state boredom and is anticipated to be a significant predictor of state boredom after controlling for pre-task boredom. An experiment was conducted with 98 university students. All participants engaged in an identical task designed to induce boredom, with only participants in the experimental group given a choice during the task to enhance their perceived control. Correlational analysis revealed a significant negative relationship between perceived control and state boredom. Hierarchical regression analysis demonstrated that perceived control remained a significant predictor of post-task boredom even after controlling for pre-task boredom. The study concludes with a discussion of the limitations, the implications of the findings, and suggestions for future research.