Lee, Soon Hang;Ahn, So Hyun;Lee, Eun Ji;Bang, Hee Jeong
Korean Journal of Child Studies
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v.35
no.5
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pp.37-61
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2014
The purpose of the present study was to conduct a preliminary study for developing a Korean version of the Fine Motor Scale of the Bayley Scales of Infant and Toddler Development, $3^{rd}$ Edition(Bayley-III). The subjects for this study included 313 Korean infants and toddlers aged from 16 days to 42 months and 15 days. The results of this study were as follows. Firstly, the analysis of the degree of item difficulty indicated that the arrangement of the items corresponded with child development by age. Secondly, the analysis of the inter-item consistency, the test-retest reliability and the inter-rater reliability revealed a high degree of reliability of the scale. Thirdly, the Fine Motor Scale of K-Bayley-III score showed a significant high correlation with the Motor composite score but a significant moderate correlation with the Language composite score, providing evidence of its convergent and discriminant validity. This study demonstrated that the preliminary version of the K-Bayley-III Fine Motor Scales can be applied to assess the development of fine motor skills of Korean infants and toddlers.
Purpose : This study investigated how gross motor and fine motor development are influenced by sleep position. Methods : From December, 2003 to September, 2005, for a year and 9 months, 800 children aged from 3 months to 16 months, who visited the Presbyterian Medical Center, Chonju, Korea were surveyed for motor development scale, sleep position and body weight. Results : The sleep position came in order : 79.3 percent of supine position, 10.0 percent prone position and 10.7 percent side position. Gross motor scale and fine motor scale were not connected with sex. The prone position indicated remarkable increase on gross motor scale from 5-6 months, but stayed the same after 7 months. Fine motor scale was not related to age and sleep position. Gross motor scale and fine motor scale were higher on group weighing more than under average weight group. Conclusion : This study showed that prone position did not influence gross motor scale after 7 months, affecting children of 5-6 months only. Hence, It is not recommended to use the prone position for a baby's fast gross motor development.
The Journal of Korean Academy of Sensory Integration
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v.16
no.1
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pp.25-34
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2018
Objective : This study aims to figure out the effect that sensory integration group therapy has on the fine motor, social interaction and playfulness of preschool children with intellectual disability. Methods : Participants were four children from three to five years old who were diagnosed with intellectual disabilities and they participated in twelve sessions of sensory integration group therapy, sixty minutes per session and once a week. Sensory integration group therapy was composed of parallel and peer play-centered gross motor activities, art activities and sensory plays that were related to each theme. Erhardt Developmental Prehension Assessment (EDPA), Penn Interactive Peer Play Scale (PIPPS) and Test of Playfulness (ToP) were used to evaluate participants' fine motor, social interaction and playfulness before and after the intervention. Results of fine motor, social interaction and playfulness before and after the intervention were compared using Wilcoxon matched-pair signed rank test. Results : After sensory integration group therapy intervention, the fine motor skills of participants did not show significant increases, but social interaction and playfulness showed significant increases (p< .05). Conclusion : Although sensory integration group therapy with preschool children with intellectual disability did not show positive improvement in fine motor skills, it showed positive effect on social interaction and playfulness. Group sensory integration therapy might be an intervention approach for all children with disabilities.
Park, Kee Jeong;Kweon, Kukju;Lee, Saejeong;Lim, Yun Shin;Joung, Yoo Sook;Kim, Hyo-Won
Journal of the Korean Academy of Child and Adolescent Psychiatry
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v.28
no.4
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pp.244-251
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2017
Objectives: The objective of this study was to investigate the effect of pharmacological treatments for attention-deficit hyperactivity disorder (ADHD) on motor coordination, using the Developmental Coordination Disorder Questionnaire (DCDQ). Methods: The participants were recruited from April 2015 to November 2016 from the Department of Psychiatry of Asan Medical Center and were treated for 3 months with methylphenidate or atomoxetine. The illness severity at baseline and 3 months were scored using the ADHD Rating Scale (ARS), Clinical Global Impression-Severity Scale (CGI-S) and/or Clinical Global Impression-Improvement Scale (CGI-I). A total of 39 children with ADHD (age $8.0{\pm}1.4years$, 36 boys) completed the Advanced Test of Attention (ATA) and their parents completed the DCDQ at baseline and 3 months. The paired t-test, mixed between-within analysis of variance and correlation analysis were used. Results: The CGI-S (p<0.001), ARS (p<0.001), and fine motor/hand writing (p=0.005) on the DCDQ were significantly changed between pre-treatment and post-treatment. When the participants were divided into those who were suspected of having developmental coordination disorder (DCD) (n=23) and those who probably did not (n=16), the control during movement, fine motor/hand writing and general coordination scores on the DCDQ showed the main effects for group (p<0.001, p<0.001 and p<0.001, respectively). The fine motor/hand writing on the DCDQ has a significant main effect for time [F(1,37)=7.31, p=0.010, ${\eta}^2=0.405$] and the interaction effect between group and time was also significant [F(1,37)=4.63, p=0.038, ${\eta}^2=0.111$]. The baseline visual commission error on the ATA is significantly correlated with the changes in the DCDQ total scores (r=0.330, p=0.040). Conclusion: Our results provide preliminary evidence that pharmacological treatment for ADHD improves not only the core symptoms of ADHD, but also the motor coordination. Further studies are needed to confirm the effect of the pharmacological treatment for ADHD on the motor coordination.
The purpose of this study was to examine the effects of sensory integration therapy (SIT) on sensory' motor development and adaptive behavior of cerebral palsy children. The design of this study was quasi experiments with a non-equivalent pre- and post-test control design. Subjects of the study were arbitrarily chosen based on predetermined selection criteria among the cerebral palsy children who were treated as out-patients at two rehabilitation hospitals one in Seoul, and the other in Kyunggi-do. The study was conducted between early April and late July in 2000. Fifteen children were in the experimental group and eleven in the control group. The allocation was done based on ease of experimental treatment. A five-step SIT program was devised from a combination of SIT programs suggested by Ayres(1985) and Finks(1989), and an author-designed SIT program for cerebral palsy children. The experimental group was subjected to 20 to 30 minutes of SIT per session. two sessions a week for ten -week period. The effects of SIT were measured with respect to 9 sub-areas that can be administered to cerebral palsy children out of a total of 17 sub-areas in the Southern California Sensory Integration Test (SCSIT) developed by Ayres (1980). In addition. the scale developed by Russell (1993) for Gross Motor Function Measure (GMFM). and Perception Motor Development Test developed by 中司利一 et al.(1987) were also applied. Adaptive behavior was analyzed using guidelines in two unpublished documents - School-Age Checklist for Occupational Therapy by the Wakefield Occupational Therapy Associates, and the OTA-Watertown Clinical Assessment by the Watertown Occupational Therapy Associates-, and an author-developed Adaptive Behavior Checklist. Collected data were statistically analyzed by SPSS PC for chi square test, Mann-Whitney test, Wilcoxon signed rank test, and paired t-test. The results were as follows: 1. In sensory development, the experimental group exhibited a score increase compared to the control group, but the difference was not statistically significant, Although the experimental group showed improvements in all. 9 sub-areas compared to the control group, only right-left discrimination exhibited statistically significant change. 2. In gross motor development, the experimental group showed improvements in score compared to the control group, but it was not statistically significant. In fine motor development, the experimental group exhibited statistically significant improvements compared to the control group. In sub-area analysis, figure synthesis showed positive change. 3. In adaptive behavior development, post-experimental adaptive behavior scores were higher compared to pre-experimental scores with statistical significance. Furthermore, sub-areas emotional behavior, perception behavior, gross-fine motor function, oral-respiration function, motor behavior, motor planning, and adaptive response exhibited higher scores after SIT. In conclusion SIT was found to be partially effective in sensory and fine motor development, effective in all adaptive behavior areas, and not effective in gross motor development. Thus, this study has shown that SIT is an effective intervention for sensory development, fine motor development, and adaptive behavior for cerebral palsy children. But, for the effectiveness of SIT on gross motor development, further studies employing longer-time experiments are recommended.
Ultrasonic motors provide high torques and quick responses compared to their magnetic counterparts; therefore, they are widely used in small-scale applications such as mobile phones, microrobots, and auto-focusing modules in digital cameras. To determine the feasibility of lead-free piezoceramics for ultrasonic motor applications, we fabricated a ring-type piezoceramic with a KNN-based lead-free piezoceramic (referred to as CZ5), intended for use in an auto-focusing module of a digital camera. The vibration of the lead-free stator was observed at 45.1 kHz. It is noteworthy that the fully assembled lead-free ultrasonic motor exhibited a revolution speed of 5-7 rpm, even though impedance matching with neighboring components was not considered. This result suggests that the tested KNN-based piezoceramic has great potential for use in ultrasonic motor applications, requiring minimal modifications to existing lead-based systems.
Kim K.H.;Choi Y.M.;Kim J.J.;Lee M.G.;Lee S.W.;Gweon D.G.
Proceedings of the Korean Society of Precision Engineering Conference
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2005.06a
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pp.1883-1886
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2005
In this paper, a decoupled dual servo (DDS) stage for ultra-precision scanning system with large working range is introduced. In general, dual servo systems consist of a fine stage for short range and a coarse stage for long range. The proposed DDS also consists of a $XY\theta$ fine stage for handling and carrying workpieces and one axis coarse stage. Its coarse stage consists of air bearing guide system and a coreless linear motor with force ripple. The fine has four voice coil motors(VCM) as its actuator. According to a VCM's nature, there are no mechanical connections between coils and magnetic circuits. Moreover, VCM doesn't have force ripples due to imperfections of commutation components of linear motor systems - currents and flux densities. However, due to the VCM's mechanical constraints the working range of the fine is about $25mm^2$. To break that hurdle, the coarse stage with linear motors is used to move the fine about 500mm. Because of the above reasons, the proposed DDS can achieve higher precision scanning than other stages with only one servo. With MATLAB's Sequential Quadratic Programming (SQP), the VCMs are optimally designed for the highest force under conditions and constraints such as thermal dissipations due to its coil, its size, and so on. And for their movements without any frictions, guide systems of the DDS are composed of air bearings. To get precisely their positions, a linear scale with 5nm resolution are used for the coarse stage's motion and three plane mirror laser interferometers with 5nm for the fine's $XY\theta$ motions. With them, on scanning the two stages have same trajectories. The control algorithm is named Parallel method. The embodied ultra-precision scanning system has sub 100nm following error and in-positioning stability.
Proceedings of the Korean Society of Precision Engineering Conference
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2005.06a
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pp.104-107
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2005
Recently, according to the development of semiconductor industry, needed to high-integration and high-functionality. These changes are required for silicon wafer of large scale diameter and precision of TTV (Total Thickness variation). So, in this research, suggest that the method of monitoring system is using motor current. This method is needed for observation of silicon wafer grinding process. Motor current sensor is consisted of hall sensor. Hall sensor is known to catching of change of current. Received original signal is converted to the diginal, then, it is calculated RMS values, and then, it is analysed in computer. Generally, the change of force is relative to the change of current, So this reason, in this research tried to monitoring of motor current change, and then, it will be applied to analysis for silicon wafer grinding process. using motor current sensor.
Journal of the Korean Academy of Child and Adolescent Psychiatry
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v.1
no.1
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pp.161-171
/
1990
The study was to examine the effectiveness of the educational program for the parents of autistic children in promoting the development and amelioration of psychopathology. Behavioral pathology and developmental function of autistic children of two parent groups, parents who participated in educational program and parents who did not participate in that program, were compared before and after partent education program. For these purpose, the data were collected from 30 subjects(15 for participant group and 15 for non-participant group) who were diagnosed as Autism according to DSM-III at Child-Psychiatry of Seoul National University Hospital during May 16, 1987 through April 30, 1988. Pre and post tests by Schopler's Psycho-Educational Profile scale were performed for all of the subjects and the data were analyzed by Wilcoxon Rank Sum test, Wilcoxon Sign Rank test and $X^2-test.$ The results obtained were as follows ; 1) The autistic children of participant group were significantly higher than those of non-participant group after education on Imitation, Gross motor and Eye-hand Integration scale of developmental function area (p<0.05) 2) After education, the autistic children of participant group were significantly improved in Affect and Language scale of behavioral pathology area (p<0.05). 3) After education, the autistic children of participant group were significantly improved in developmental function, such as perception, Fine motor, Gross motor, Eye-hand Integration, Cognitive Performance, Cognitive Language (p<0.05). 4) The autistic children of non-participant group were significantly improved in Relating behavior and developmental functions such as Perception, Fine motor and Eye-hand Integration at post test in comparison to pre test (p<0.05). From these results, it might be concluded that the autistic children of participant group were improved much more, and obtained higher score in developmental function area than those of non-participant group. It is suggested that this kind of education program helped and supported the parents to do some more appropriate approach for the development of their children.
Kim, Bo-Ram;Kim, Kyeong-Mi;Chang, Moon-Young;Hong, Eunkyoung
The Journal of Korean Academy of Sensory Integration
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v.19
no.3
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pp.32-43
/
2021
Objective : This study aimed to verify the construct validity of the Korean version of the Peabody Developmental Motor Scale-2 (K-PDMS-2) and its test-retest reliability for children with cerebral palsy (CP) and typical children. Method : To ascertain the construct validity, the K-PDMS-2 evaluation was conducted on 42 children with cerebral palsy and 42 typical children of similar age and gender. Construct validity was proved through comparison with standard scores. Ten of the children with CP were re-evaluated after two weeks to determine test-retest reliability. Results : There was a statistically significant difference in gross motor and fine motor development according to five subtests between the group of children with CP and the typical group (p = .000). For test-retest reliability, the correlation coefficient of the total frequency score was .989, representing very high temporal stability. Conclusion : This study confirmed that K-PDMS-2 is an evaluation tool of high reliability and validity, and a potentially useful future measure for domestic clinical sites and research.
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