• Title/Summary/Keyword: Change Control

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The Effects of Senior Simulation Programs on Elderly Care Facilities Employees' Attitudes for Elderly Care, Understanding of the Aged, Job Satisfaction, and Job Performance (노인유사 체험이 노인요양시설 종사자의 노인돌봄태도, 노인에 대한 이해도, 업무만족도 및 직무수행에 미치는 영향)

  • Joung, Hye-Young;Hyun, Hye-Jin
    • Research in Community and Public Health Nursing
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    • v.23 no.2
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    • pp.222-230
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    • 2012
  • Purpose: This research is to understand the effects of senior simulation on employees of elderly care facilities and utilize it in their job training. Methods: This research is a nonequivalence control group pre-to-post quasiexperiment research. 18 employees who have experienced senior simulation are set as test group and 18 other employees who have not experienced senior simulation are set as control group. Results: The hypothesis that 'the test group which has experienced senior simulation will show a positive change in their attitude on elderly care, compared to the control group' and 'the test group which has experienced senior simulation will show a positive change in understanding of elders, compared to the control group' was supported. The hypothesis that 'the test group which has experienced senior simulation will show a positive change in job satisfaction and performance of duties, compared to the control group' was dismissed. Conclusion: The senior simulation seems to contribute to elderly care facilities employees' change in their viewpoints of elders and broaden their understanding of them. The senior simulation was meaningful to provide basic help with implementing job training programs.

Sensorless Speed Control of Induction Motor using Am and FMRLC (ANN과 FMRLC를 이용한 유도전동기의 센서리스 속도제어)

  • Nam Su-Myeong;Lee Jung-Chul;Lee Hong-Gyun;Lee Young-Sil;Part Bung-Sang;Chung Dong-Hwa
    • Proceedings of the KIPE Conference
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    • 2004.07a
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    • pp.38-41
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    • 2004
  • Artificial intelligence control that use Fuzzy, Neural network, genetic algorithm etc. in the speed control of induction motor recently is studied much. Also, sensors such as Encoder and Resolver are used to receive the speed of induction motor and information of position. However, this control method or sensor use receives much effects in surroundings environment change and react sensitively to parameter change of electric motor and control Performance drops. Presume the speed and position of induction motor by ANN in this treatise, and because using FMRLC that is consisted of two Fuzzy Logic, can correct Fuzzy Rule Base through teaming and save good response special quality in change of condition such as change of parameter.

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Effects of Neck Stabilizing Exercise on Muscle Characteristics, Muscle Activity and Posture in Patients with Cervicogenic Headache (목 안정화 운동이 경추성두통 환자의 근육특성과 근활성도 및 자세에 미치는 영향)

  • Park, Seungkyu;Yoon, Jonghyuk
    • Journal of The Korean Society of Integrative Medicine
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    • v.7 no.4
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    • pp.301-309
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    • 2019
  • Purpose : The purpose of this study was to provide an effective method of exercise therapy for patients with cervicogenic headache. Methods : The subjects were divided into the following two groups according to the intervention received: cervical stretch exercise (n=15, control group) cervix-stabilizing exercise (n=15, experimental group) tone (Hz) and stiffness (N/m) of the suboccipital and upper trapezius muscles were measured. T1 slope angle and neck tilt angle were measured. After the exercise program intervention, a greater amount of change in muscle tone and stiffness of suboccipital and upper trapezius muscles was found in the experimental group, as compared to the control group. Greater amount of change in posture was found in the experimental group, as compared to the control group (p<0.05). Results : After the exercise program intervention, a greater amount of change in muscle tone and stiffness of suboccipital and upper trapezius muscles was found in the experimental group, as compared to the control group. Greater amount of change in posture was found in the experimental group, as compared to the control group (p<0.05). Conclusion : The neck-stabilizing exercise were shown to be effective in decreasing the tone of the cervical muscles by stabilizing the cervical bone and improving muscle activity, and in improving the posture by decreasing muscle tone and stiffness.

A Study of Stage of Change of Exercise in Young Adults (초기성인기의 운동변화단계에 따른 변화과정)

  • Byun Young-Soon
    • Journal of Korean Academy of Fundamentals of Nursing
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    • v.10 no.2
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    • pp.138-144
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    • 2003
  • Purpose: The purpose of this study was to identify the change processes for exercise behaviors in each stage. Method: Participants for this study were randomly selected from adults between the ages of 20-44. Data were collected using questionnaires over a 2 week period at the end of May, 2003. The instrument, Stages of exercise behavior change developed by Marcus et al. (1992b), and the instrument, Changing phases of exercise behaviors developed by Nigg et al. (1999) and translated by Kwon (2002) were used to investigate the behaviors. Result: 1. Related to stage of exercise behavior change of participants, it was found that 55.2% of participants exercised regularly. 2. Among the change processes according to stage of change showed that dramatic relief was the most frequently used process for all stages. Environmental reevaluation and social liberation were used most in the contemplation stage, while environmental reevaluation and stimulus control were used most in the preparation stage. In addition, scores for stimulus control and environmental reevaluation were high in the action stage. In the maintenance stage, social liberation and counter-conditioning were used most frequently. 3. The process of exercise behavior change which differentiates the stages of exercise behavior change were shown to be counter-conditioning, which was an influential factor that differentiates the contemplation stage and maintenance stage. Conclusion: The results suggest that change process management should be the focus to enhance the stage of change for exercise in this group.

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Development of fuzzy control algorithm for servo systems (Servo system에 대한 fuzzy control algorithm의 연구)

  • 이수흠;정원용;이현우;박창대
    • 제어로봇시스템학회:학술대회논문집
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    • 1991.10a
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    • pp.563-566
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    • 1991
  • This paper discusses the possibility of applying fuzzy logic controller in a microprocessor - based servomotor controller, such as servomotor position controller, which requires faster and more accurate response compared with other industrial processes. According to the fuzzy control rule made by tie analysis of error and error change, one Look-up table that contains various quantized step is made and appropriate initial error change is selected to the good responses.

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A Driving Method and Precise Repetitive Control of BLDC Motor (BLDC 모터의 구동방법과 정밀 반복제어)

  • 이충환
    • Journal of Advanced Marine Engineering and Technology
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    • v.22 no.6
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    • pp.928-934
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    • 1998
  • This paper describes a fully digitalized driver for BLDC motors which is realized by a single chip microprocessor. The speed change can be done by using the signal obtained from the position detecting sensor and adjusting the pulse width at the input channel of power module. In order to establish a speed control system a repetitive control method is adopted to track a periodic refer-ence change in the BLDC motor system. The experimental results show accurate reference track-ing performance under the given periodic reference in the repetitive controller design.

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A Fuzzy Logic Controller Using Error, Change of Error, and Control Input

  • Lee, Jihong;Seog Chae
    • Proceedings of the Korean Institute of Intelligent Systems Conference
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    • 1993.06a
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    • pp.956-959
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    • 1993
  • We propose a new PI FLC which utilizes the error(e), change of error( e), and previous control(u(k-1)). It is shown by simulation that the proposed scheme gives better performance in steady state than the conventional PI FLC.

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Fuzzy-Sliding Mode Control for SCARA Robot Based on DSP (DSP를 이용한 스카라 로봇의 퍼지-슬라이딩 모드 제어)

  • Go, Seok-Jo;Lee, Min-Cheol
    • Journal of Institute of Control, Robotics and Systems
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    • v.6 no.4
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    • pp.285-294
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    • 2000
  • This paper shows that the proposed fuzzy-sliding mode control algorithm for a SCARA robot could reduce the chattering due to sliding mode control and is robust against a change of payload and parameter uncertainties. That is, the chattering can be reduced by changing control input for compensating disturbances into a control input by fuzzy rules within a pre-determined dead zone. The experimental results show that the chattering can be reduced more effectively by the fuzzy-sliding mode control algorithm than the sliding mode control with two dead zones. It is proved experimentally that the proposed control algorithm is robust to a change of payload. The proposed control algorithm is implemented to the SCARA robot using a DSP(board) for high speed calculations.

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Studies of CheongSimYeonJaTang that get weight, hematology, biochemistry change by Wistar rat's aging (청심연자탕(淸心蓮子湯)이 Wistar rat의 노화에 따른 체중, 혈액학적 및 혈청 생화학적 변화에 관한 실험적(實驗的) 연구(硏究))

  • Ju, Lip-San;Ahn, Taek-Won
    • Journal of Haehwa Medicine
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    • v.13 no.2
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    • pp.337-345
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    • 2004
  • Using aged Wistar rat living body change by aging CheongSimYeonJaTang was each orally administrated and achieved research about aging control. In Wistar rat 10, 30, 50 week and 40 week CheongSimYeonJaTang between 10 weeks form condition change of weight, change of intestine weight, hematology, blood chemistry, research result about serum content following conclusion get. 1. Observed gain in weight than control group form of CheongSimYeonJaTang to aged Wistar rat. 2. Is thought to promote activation of living body action gaining intestine weight along with gain in weight. 3. Displayed decrease of MDA's content of serum than control group form of CheongSimYeonJaTang to aged Wistar rat. 4. Change that is Wistar rat's hematological value by aging according to 10, 30, 50 week WBC, RBC, Hgb, monocytes, eosinophil etc. increase, and HCT, PLT etc. showed tendency that decrease according to old-week, and observed improvement that is hematological value than control group form of CheongSimYeonJaTang. 5. Change that is Wistar rat's biochemical value by aging was measured highest in 50 week because ALT, AST, BUN, CRN, T-bili., T-chol, TG, TP, ALB, A/G, P etc. increase according to 10, 30, 50 week, and observed improvement that is biochemical value than control group form of CheongSimYeonJaTang. Is considered by being effect that CheongSimYeonJaTang living body function decline by aging by this result.

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Parallel Operation Control Method of Grid-connected Inverters with Seamless Transfer for Energy Storage System in Microgrid (마이크로그리드에서 에너지 저장시스템을 위한 무순단 절체 기능을 갖는 계통연계형 인버터의 병렬운전 제어기법)

  • Park, Sung-Youl;Kim, Joo-Ha;Jung, Ah-Jin;Choi, Se-Wan
    • The Transactions of the Korean Institute of Power Electronics
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    • v.21 no.3
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    • pp.200-206
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    • 2016
  • In the microgrid, inverters for energy storage system are generally constructed in a parallel structure because of capacity expandability, convenience of system maintenance, and reliability improvement. Parallel inverters are required to provide stable voltage to the critical load in PCC and to accurately share the current between each inverter. Furthermore, when islanding occurs, the inverters should change its operating mode from grid-connected mode to stand-alone mode. However, during clearing time and control mode change, the conventional control method has a negative impact on the critical load, that is, severe fluctuating voltage. In this study, a parallel operation control method is proposed. This method provides seamless mode transfer for the entire transition period, including clearing time and control mode change, and has accurate current sharing between each inverter. The proposed control method is validated through simulation and experiment.