• Korean Journal of Childcare and Education
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• v.3 no.1
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• pp.39-56
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• 2007

The purpose of this study was to examine difference of Young Children's Self-Regulation by Mother's Verbal Control. To do so, The subject was composed of 146 3-, 4-, 5-year-old recruited from 5 child care centers in I city area And it utilized questionnaires to ask 146 mothers concerning Mother's Verbal Control and Young Children's Self-Regulation. The findings of this study were : First, the age and the gender of young children didn't affect the mother's verbal control. Second, the age of young children positively affected self decision and total self regulation total that is the subordinate area of self regulation. Third, use degree of mother's order and humanity verbal control divided high and low group up to the standard average value. As a result a low rank distribution of mother's verbal control positively affected. Forth, a result a low rank distribution of mother's verbal control positively affected self decision and behavior restrain and emotion and total self regulation total that is the subordinate area of self regulation.

• The Transactions of the Korean Institute of Electrical Engineers P
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• v.63 no.3
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• pp.169-177
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• 2014

Operation and control system has been installed and tested to use energy storage system(ESS) for frequency regulation at 4MW class of ESS demonstration facility installed at Jeju island, Korea in 2013. Simulation tests were performed by programing language C# for power system of Jeju island to develop control algorithm. Site simulation tests were performed in control system itself without connecting power system and energy storage system. Control algorithm was coded, modified and tested to load to controller and communication system and human-machine interface were developed and tested in the process of simulation tests. After similar results to that of simulation tests by programing language were obtained, power system and energy storage system demonstration facility were connected to control system by communication system. Energy storage system for frequency regulation was tested for actual frequency and simulation frequency. The site tests showed the similar results to that of simulation tests and the control systems is possible to be operated for frequency regulation. Faster response of energy storage system for frequency regulation, less costs and less capacity of energy storage systems which cover for frequency regulation of power plants. It is expected that more studies for time-reduction and time-delay elements can make less capacity of energy storage system cover more role of frequency regulation of power plants.

• Journal of Korean Academy of Rural Health Nursing
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• v.6 no.1
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• pp.33-43
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• 2011

Purpose: This study was done to verify the effects of a self-regulation program for management of hypertension. Method: Thirty patients with hypertension registered in a community health center were selected as the experiment group, and control group were patients in another community health center, matched for age and gender. The self-regulation program included daily blood pressure checks, periodic counseling, and health education. A self-check digital device with instructions was provided for self-monitoring of blood pressure, and the participants were interviewed before they took part in the program. Results: The first hypothesis was supported: There will be a greater reduction in both systolic and diastolic blood pressure for patients with hypertension who participate in the self-regulation program compared to patients in the control group. The second hypothesis was also supported: Patients with hypertension who participate in the self-regulation program will perform self-care activities better than those in the control group. Conclusion: The findings indicate that a self-regulation program reduces systolic and diastolic blood pressure and improves self-care in patients with hypertension. It is recommended that this self-regulation program be used in community health clinics for management of hypertension and prevention of complications.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.4
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• pp.169-176
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• 2019

This study investigated the effects of mother's psychological control and of teacher-child interaction on young children's self-regulation. Data were collected by surveying 358 young children, their mothers and their 28 teachers. Data were analyzed with statistics using the SPSS Win 18.0 version. The study results are as follows. Mother's psychological control and teacher-child interaction had a significant effect on infant self-regulation. Between them, the child-teacher interaction had a greater effect than the mother's psychological control, affecting emotional regulation more than behavioral regulation. The study results confirmed the mother's psychological control and the interaction of the child-teacher as the variables affecting the children's self-regulation. These results highlight the necessity of continuing education on mother's discipline and teacher's interaction and development of educational program for early childhood pre-service teachers.

• Child Health Nursing Research
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• v.27 no.1
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• pp.24-33
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• 2021

Purpose: This study aimed to evaluate the effects of a rational emotive behavior therapy (REBT)-based emotional regulation program for mothers of premature infants in the neonatal intensive care unit (NICU). Methods: The study utilized a nonequivalent control group pretest-posttest design. Seventeen mothers were recruited for the experimental group and 21 mothers for the control group. Data were collected from July 9, 2018, to Oct 12, 2018 from mothers of premature infants in the NICU regarding parental stress, state anxiety, depression, and maladaptive cognitive emotion regulation. The experimental group received eight sessions of the REBT-based emotional regulation program for 3~4 weeks, and the control group only received standard nursing care. Results: Significant differences were found between the two groups in maladaptive cognitive emotion regulation (Z=-3.88, p<.001), stress (Z=-2.76, p=.006), state anxiety (Z=-3.72, p<.001), and postpartum depression(Z=-2.62, p=.009) after the intervention in the experimental group. Conclusion: The REBT-based emotional regulation program for mothers of premature infants was effective for reducing maladaptive cognitive emotion regulation, stress, anxiety, and postpartum depression. Therefore, it may be necessary to provide an REBT-based emotional regulation program for mothers of premature infants in the NICU in clinical practice.

• Journal of Electrical Engineering and Technology
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• v.11 no.6
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• pp.1556-1570
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• 2016

In the process of virtual inertia control (VIC), the frequency regulation capability of the directly-driven wind turbine with permanent-magnet synchronous generator (D-PMSG) on wind farm is related to its rotor kinetic energy and capacity margin. This paper proposes the method for assessing the D-PMSG frequency regulation capability and defining its coefficient according to the operating state of wind power generators. In addition, the calculating method of parameters in VIC is also discussed according to the principles of primary frequency regulation and inertia response of synchronous generators. Then, by introducing the capability coefficient into the proportion-differential virtual inertia control (PD-VIC) for power coordination, a coordinated virtual inertia control (C-VIC) strategy is developed, with the consideration of the difference in frequency regulation capability between wind power generators. The proposed control method can not only give full play to the frequency regulation capability of wind power generators, decrease the movements of the pitch angle control system but also bring some self-coordination capability to different wind power generators thus to avoid a secondary drop in system frequency. The simulations and experiments prove the proposed method to be effective and practicable.

• Journal of Power Electronics
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• v.16 no.5
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• pp.1802-1812
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• 2016

Cross regulation is a key technical issue of single-inductor multiple-output (SIMO) DC-DC converters. This paper investigates the cross regulation in single-inductor dual-output (SIDO) Buck converters with continuous conduction mode (CCM) operation. The expressions of the DC voltage gain, control to the output transfer function, cross regulation transfer function, cross coupled transfer function and impedance transfer function of the converter are presented by the time averaging equivalent circuit approach. A small signal model of a SIDO CCM Buck converter is built to analyze this cross regulation. The laws of cross regulation with respect to various load conditions are investigated. Simulation and experiment results verify the theoretical analysis. This study will be helpful for converter design to reduce the cross regulation. In addition, a control strategy to reduce cross regulation is performed.

• The Journal of the Korea Contents Association
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• v.18 no.10
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• pp.236-246
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• 2018

This study aimed to analyse the effects of a self-regulation group counselling program on self-esteem and self-control in adolescents on probation. In respect to sub-areas of the effects the self-regulation group counselling program had on self-esteem in adolescents, there were statistically significant differences in general self-esteem, social self-esteem and family self-esteem. Also, there were statistically significant differences in all the areas including impulse control and emotional control as sub-areas of self-control. Such results experimentally showed that the self-regulation group counselling program had a significant effect on self-esteem and self-control in adolescents on probation. Therefore, it is expected that the probability of repeating their crimes will decrease greatly if the subjects have self-esteem and self-control enhanced through the group counselling program. It is suggested further studies on the self-regulation group counselling program and its practical use are needed to enhance self-esteem and self-control in adolescents on probation.

• Journal of Educational Research in Mathematics
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• v.12 no.3
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• pp.371-388
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• 2002

The purpose of this study is to analyze the effects of interaction based on contingent regulation between teacher and underachiever in elementary mathematics. For this purpose, research questions are established as follows; (1) Is there any difference between contingent regulation and natural regulation in mathematics achievement\ulcorner (2) Is there any difference between contingent regulation and natural regulation in affectionate perspective\ulcorner (3) Is there any difference between contingent regulation and natural regulation in adult regulation\ulcorner Two classes of fifth grade Children(10 children) were sampled from an elementary school in city of Daegu. One of them was assigned to the contingent regulation group and the other to natural regulation group. An experiment was conducted for 7 weeks. Two kinds of test instruments were used : pre-test and post-test. The pre-test scores guaranteed that both groups were homogeneous. Post-test was used to identify two effects(research questions (1) & (2)) and the post-test scores were analyzed by t-test. The results were as follows. (1) There was significant difference between contingent regulation and natural regulation in mathematics achievement. This means that experiment group was higher than control group and the interaction effect of contingent regulation was higher in post-test. The self-control indicated in experiment group. (2) There was slightly significant difference between contingent regulation and natural regulation in affectionate perspective. This means that experiment group turned to slightly positioner in post-test. (3) There was significant difference between contingent regulation and natural regulation in adult regulation. In other words, level of contingent regulation changed depending on underachievers' ability but level of natural regulation didn't change. Therefore, I suggest that contingent regulation based on Vygotsky theory would provide effective mathematics education for underachievers in elementary mathematics.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.16 no.8 s.113
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• pp.864-871
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• 2006

In the development of electricity generating wind turbines for wind farm application, only two types have survived as the methods of power regulation; stall regulation and full span pitch control. The main purpose of this paper is to experimentally identify the characteristics of noise emission of wind turbines according to the power regulation types. The sound measurement procedures of IEC 61400-11 are applied to field test and evaluation of noise emission from each of 1.5 MW and 660 kW wind turbines (WT) utilizing the stall regulation and the pitch control for the power regulation, respectively. Apparent sound power level, wind speed dependence, third-octave band levels and tonality are evaluated for both of WTs. It is observed that equivalent continuous sound pressure levels (ECSPL) of the stall control type of WT continue to increase with increasing wind speed whereas those of the pitch control type of WT show less correlation with wind speed. These observed characteristics are believed to be due to the different airflow patterns around the blade between the stall regulation and the pitch control types of WT; the airflow on the suction side of blade in the stall types of WT are separated at the high wind speed. It is also found that the 1.5 MW WT using the stall control emits lower sound power than 660 kW one using the pitch control at wind speeds below 8m/s, whereas sound power of the former becomes higher than that of the latter in the wind speed over 8m/s. This wind-speed dependence of sound power leads to the very different noise omission characteristics of WTs depending on the seasons because the average wind speed in summer is lower than 8m/s whereas that in summer is higher. Based on these experimental observations, it is proposed that, in view of environmental noise regulation, the developer of wind farm should give enough considerations to the choice of power regulation of their WTG based on the weather conditions of potential wind farm locations.