• Title/Summary/Keyword: motor

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하계 전기, 전자연합학술회의 및 산학협동 심포지엄 초록

  • 대한전기학회
    • 전기의세계
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    • v.27 no.5
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    • pp.33-54
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    • 1978
  • (차례) 1.산학협동심포지업 (1)우리나라에서의 연구개발과 산학협동 (2)산학협동과 산업계의 역할 (3)산학협동의 현황과 진로 2.학술회의A (1)전력게통의 계층구조와 협조원리에 관한 연구 (2)2중층괴상회전자 유도전동기의 이론해석 (3)초고주파가열장치에 사용하는 철공진변압기의 해석적 설계 (4)한국전기기시험연구소 대전력단락 시험설비설계 (5)직류전동기제어를 위한 Thyristor Chopper정류회로에 관한 연구 (6)선로의 개폐정보를 포함하는 전력계통의 상태추정 (7)단일신경세포에 대한 ITEM 신호 특성 3.학술회의B (1)MMM-1 Computer System의 설계 및 제작 (2)Adaptive Delta Modulation System의 성능비교 연구 (3)6GHZ FMD마이크로파 무선전송장치의 개발 (4)적선도에 의한 회로망함수의 결정 (5)동맥혈압의 해석과 그의 전기적 유사모델 (6)피부감각의 정보전달 특성에 관하여 (7)선형직접회로의 공정설계 및 그 특성 조성 (8)DH L.D의 전기적포화현상에 관한 이론적 해석 (9)Potocoupler를 이용한 Isolator 4.학술회의C (1)Al-Al$_{2}$O$_{3}$ -Al박막구조의 전기적 특성 (2)이종금속에 샌드위치된 고분자물질의 단락전조 (3)유전체가 일부체워진 직 6면체의 캐비티의 다중모오드 해석 (4)반도체 가스 검지소자의 제조 및 그의 전기적 특성 (5)실리콘 산화공정에 대한 실험적 고찰 (6)진공증착법에 의한 InSb 박막제도에서 열처리효과 (7)(Ba$_{1}$-xBix) Tio$_{3}$ PTC thermistor의 첨가량의 최적건안 (8)금속박막증착시 두께조절 5.특별강연회 (1)일본에 있어서의 절력계통공학연구 (2)Linear Motor의 최근개발동향량도 높았다. valine과 leucine 및 aspartic acid, glycine과 glutamic acid, leucine과 aspartic acid 간에는 고도의 정상관, glycine과 serine, valine과 phenylalanine, threonine과 proline, phenylalanine과 arginine, methionine과 glutamic acid, histidine과 lysine 간에는 유의 정상관, 그리고 isoleucine과 lysine 간에는 유의한 부상관이 있었다. 4. lysine 함량은 단백질 함량과 정산곤, isoleucine 함량은 단빅질 함량과 부상관을 보였으며, alanine, valine, leucine 함량은 지방함량과 각각 유의한 정산관을 보였다. 5. 대두 단백질은 7.5% acrylamide gel 전기영동에 의해 품종에 따라 12~16개의 구성분으로 분리되었으며, 이들중 주구성분들은 상대이동도가 0.06(a), 0.14(b). 0.24(d) 이었고, 구성분 b의 함량이 품종간에 가장 변이가 컸으며, 구성분 b는 그밖의 주요 구성분들의 함량과 부의 상관이 있었고, 구성분 a는 단백질 함량과 정상관이 있었다. 6. 종실단백질 구성분들의 조합 특성 면에서 공시 86품종은 11개 유형군으로 분류되었으며, 우리나라와 일본품종은 미국품종에 비해 단백질구성분 조성이 훨씬 다양하였다. 7. 이동도가 매우 빠른 단백질 구성분 o(Rm 0.77) p(Rm 0.81)를 모두 갖고 있는 품종은 3품종, 모두 갖고 있지 않은 품종은 1품종이었고, 나머지 82품종은 o나 p중 한 구성분을 갖고 있었으며 그 분포율은 30 : 65 이었는데 미국계 품종은 우리나라 품종에 비해 구성분 o를 간고 있는 비율이 현저히 적었다. 8. 대두 종실은 개화후 22일까지 완만히, 그 이후 20~30일간 급속히

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Transgenic Mice Overexpressing Cocaine-Amphetamine Regulated Transcript in the Brain and Spinal Cord (뇌와 척수에서 Cocaine-Amphetamine Regulated Transcript를 과발현하는 형질전환 생쥐)

  • Choi, S.H.;Lee, J.W.;Park, H.D.;Jahng, J.W.;Chung, K.S.;Lee, H.T.
    • Korean Journal of Animal Reproduction
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    • v.25 no.4
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    • pp.389-397
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    • 2001
  • Cocaine-amphetamine regulated transcript (CART), a satiety factor regulated by leptin, is associated with food intake and motor behavior. In knock out studies, Leu34Phe mutation of human CART gene resulted in obese phenotype but mice carrying a targeted deletion of the CART gene exhibited no dramatic increase of body weight on normal fat diet. To establish a new transgenic mouse model for determining the function of CART on feeding behavior in vivo, we constructed the fusion gene, CART gene under the control of neurofilament light chain promoter, which regulates gene expression at the stage of neuronal differentiation. Transgenic mice were generated by microinjection method and screened by PCR and Southern blot analyses. In these transgenic mice, overexpression of CART was detected by in situ hybridization in spinal cords and brains at 13.5 days post-coitum embryos. At six weeks of age, RT-PCR analysis showed that exogenous CART mRNA was expressed strongly in brains and spinal cords, but not much in other tissues. Our results suggest that these transgenic mice provide a new model to investigate the function of CART gene in neuronal network associated with feeding behavior.

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Effects of Aquatic Exercise on Upper Extremity Function and Postural Control During Reaching in Children With Cerebral Palsy

  • Yongjin Jeon;Hye-Seon Jeon;Chunghwi Yi;Ohyun Kwon;Heonseock Cynn;Duckwon Oh
    • Physical Therapy Korea
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    • v.30 no.2
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    • pp.128-135
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    • 2023
  • Background: Despite the fact that aquatic exercise is one of the most popular alternative treatment methods for children with cerebral palsy (CP), there are few research regarding its effectiveness. Objects: The purpose of this study was to examine the effects of aquatic exercise on upper extremity function and postural control during reaching in children with CP. Methods: Ten participants (eight males and two females; 4-10 years; Gross Motor Function Classification System levels II-IV) with spastic diplegia were recruited to this study. The aquatic exercise program consisted of four modified movements that were selected from the Halliwick 10-point program to enhance upper extremity and trunk movements. The participants attended treatment two times a week for 6 weeks, averaging 35 minutes each session. The Box and Block Test (BBT), transferring pennies in the Bruininks-Oseretsky Test (BOT), and pediatric reaching test (PRT) scores were used as clinical measures. Three-dimensional motion analysis system was used to collect and analyze kinematic data. Differences in BBT and BOT values among pre-treatment, post-treatment, and retention (after 3 weeks) were analyzed using a Friedman test. In addition, the PRT scores and variables (movement time, hand velocity, straightness ratio, and number of movement units) from the three-dimensional motion analysis were tested using a Wilcoxon signed-rank test. The significance level was established at p < 0.05. When the results appeared to be statistically significant, a post-hoc test for multiple comparisons was performed with the Wilcoxon signed-rank test. Results: All clinical measures, which included BBT, transferring pennies of BOT, and PRT, were significantly increased between pre-intervention and post-intervention scores and between pre-intervention and retention scores after treatment (p = 0.001). Three-dimensional motion analysis mostly were significantly improved after treatment (p = 0.001). Conclusion: Aquatic exercise may help to improve body function, activity, and participation in children with varying types of physical disabilities.

A Novel Pyrazolo[3,4-d]pyrimidine Induces Heme Oxygenase-1 and Exerts Anti-Inflammatory and Neuroprotective Effects

  • Lee, Ji Ae;Kwon, Young-Won;Kim, Hye Ri;Shin, Nari;Son, Hyo Jin;Cheong, Chan Seong;Kim, Dong Jin;Hwang, Onyou
    • Molecules and Cells
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    • v.45 no.3
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    • pp.134-147
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    • 2022
  • The anti-oxidant enzyme heme oxygenase-1 (HO-1) is known to exert anti-inflammatory effects. From a library of pyrazolo[3,4-d]pyrimidines, we identified a novel compound KKC080096 that upregulated HO-1 at the mRNA and protein levels in microglial BV-2 cells. KKC080096 exhibited anti-inflammatory effects via suppressing nitric oxide, interleukin1β (IL-1β), and iNOS production in lipopolysaccharide (LPS)-challenged cells. It inhibited the phosphorylation of IKK and MAP kinases (p38, JNK, ERK), which trigger inflammatory signaling, and whose activities are inhibited by HO-1. Further, KKC080096 upregulated anti-inflammatory marker (Arg1, YM1, CD206, IL-10, transforming growth factor-β [TGF-β]) expression. In 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridinetreated mice, KKC080096 lowered microglial activation, protected the nigral dopaminergic neurons, and nigral damage-associated motor deficits. Next, we elucidated the mechanisms by which KKC080096 upregulated HO-1. KKC080096 induced the phosphorylation of AMPK and its known upstream kinases LKB1 and CaMKKbeta, and pharmacological inhibition of AMPK activity reduced the effects of KKC080096 on HO-1 expression and LPS-induced NO generation, suggesting that KKC080096-induced HO-1 upregulation involves LKB1/AMPK and CaMKKbeta/AMPK pathway activation. Further, KKC080096 caused an increase in cellular Nrf2 level, bound to Keap1 (Nrf2 inhibitor protein) with high affinity, and blocked Keap1-Nrf2 interaction. This Nrf2 activation resulted in concurrent induction of HO-1 and other Nrf2-targeted antioxidant enzymes in BV-2 and in dopaminergic CATH.a cells. These results indicate that KKC080096 is a potential therapeutic for oxidative stress-and inflammation-related neurodegenerative disorders such as Parkinson's disease.

Study in the Development of Motion Recognition Tap-water using Ultrasonic Sensors (초음파 센서를 이용한 모션 인식 수도꼭지 개발 및 연구)

  • Kim, Dong-Hyun;Ryu, Jae-Hoo;Ju, Jong-Soo;Ahn, Jong-Pil;Kim, Jae-Wook
    • The Journal of the Korea institute of electronic communication sciences
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    • v.17 no.2
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    • pp.309-316
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    • 2022
  • Advances in technology have improved people's lives comfortably and have developed more easily, safely and simply. We usually turn on hot water to set the temperature of the water in the bathroom and gradually adjust the temperature to find the temperature we want with our skin. In this situation, I thought, "What if there is a device that can see the temperature of water with my eyes and help with the interior of the bathroom while including a safe system," and tried to create a system that values stability. For example, if a child accidentally changes the temperature of the water to high temperature while washing, he or she can get burned. And the biggest purpose is to secure better safety by adding LCDs and LEDs so that we can visually know the temperature before feeling it tactilely. As a result of the experiment, there was no error between the temperature detected by the water temperature sensor and the temperature displayed on the LCD, and no error occurred up to 27 cm in the distance measurement experiment using the ultrasonic sensor. There has been an error of about 2% since 28cm or older, but there is no significant inconvenience in using it within the category of faucets.

The Research On the Energy Storage System Using SuperCapacitor (슈퍼커패시터를 적용한 에너지 저장시스템 설계에 관한 연구)

  • Kim, IL-Song
    • Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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    • v.8 no.11
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    • pp.215-222
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    • 2018
  • In this paper, the research on the energy storage system adapting super-capacitor has been performed. The most advanced features compared to the conventional lead-acid battery systems is that it can obtain high power capability due to the super capacitor power characteristics. The suggested system can attain high power in short times and achieve high power quality improvements. The application areas are power quality improvement system, motor start power which requires high power during transient times. The energy conversion system consists of bi-directional converter and inverter and advantages of high speed, high power charging and discharging performances. The design steps for the two loop controller of the bi-directional inverter are suggested and verified by the experiment and manufacturing. The two loop controller design starts from linearized transfer function which is calculated from the state averaging model including state decoupling method. The current controller requirements are 20% overshoot and settling time and voltage controller are no overshoot and settling time which is 10 times longer than current controller. The design is verified from the step input response. The designed controllers have unity power factor characteristics and thus can improve the power quality of the grid. It also has fast response time and zero steady state error.

A literatual study on the acupuncture and moxibustion for hemiparesis of stroke in Euibujipsung (중풍 후 운동 장애에 대한 『의부집성(醫部集成)』의 침구치료 고찰)

  • Jeong, Dong-won;Min, In-kyu;Moon, Sang-kwan;Park, Seong-uk;Jung, Woo-sang;Park, Jung-mee;Ko, Chang-nam;Cho, Ki-ho;Bae, Hyung-sup;Kim, Young-suk
    • The Journal of the Society of Stroke on Korean Medicine
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    • v.7 no.1
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    • pp.34-39
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    • 2006
  • Objectives and methods : The Euibujipsung is the one of the huge-scale encyclopedias about Oriental Medicine. To investigate the most frequently used acupoints for hemiparesis after stroke, we used Euibujipsung CR-ROM database with several key words concerned with motor weakness (半身不遂 不遂不隨 癱瘓 中臟 中腑 風痱, etc.). Results : In the result, we found five popular acupoints (GV20, LI11, LI15, ST36 and GB39), and four meridians (Stomach, Gall bladder, Large intestine and Small intestine). We also found that the Yang meridians were cited more frequently than the Yin. Conclusion : Therefore we think that these findings can give further ideas to clinical practice and research fields for stroke rehabilitation in Oriental medicine.

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A Comparison of Combination Therapy with Western and Oriental Medical Treatment versus Mono Therapy with Western Medical Treatment for Functional Recovery in Acute Ischemic Stroke Patients (급성기 뇌경색환자를 대상으로 한양방 병행치료군과 양방 단독치료군간 기능회복도 비교연구)

  • Woo, Su-kyung;Hyun, Sang-ho;Lee, Eun-chan;Kwak, Seung-hyuk;Park, Joo-young;Jung, Woo-sang;Moon, Sang-kwan;Cho, Ki-ho;Kim, Young-suk
    • The Journal of the Society of Stroke on Korean Medicine
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    • v.13 no.1
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    • pp.1-12
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    • 2012
  • Object : This is a study of ischemic stroke patients designed for comparison Combination therapy of western medical treatment and oriental medical treatment. and western medical treatments alone. Methods : 45 patients were diagnosed by Br-MRI scan as having suffered ischemic stroke. They had entered Kyung-Hee Medical hospital within ten days of attack, between March 2011 and October 2012. Patients were divided into two groups; a group treated with Combination therapy of western medical treatment and oriental medical treatment and other group treated with Western medical treatments. Scandinavian stroke scale and Motricity Index score was checked at admission, 2 weeks or 3 weeks later to assess neurologic improvement and motor function recovery. Results : Comparing the Scandinavian stroke scale and Motricity Index score between baseline and 2 or 3 weeks later, the combination therapy group and western medical treatment group had improved but there was no significance. Conclusions : Combination therapy have more beneficial effect on acute stage of stroke.

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A Ukulele Playing Intervention for Improving the Hand Function of Patients With Central Nervous System Damage: A TIMP Case Study (중추신경계 손상 성인 대상 손 기능 향상을 위한 우쿨렐레 활용 치료적 악기연주(TIMP) 사례)

  • Joo, Ye-Eun;Park, Jin-Kyoung
    • Journal of Music and Human Behavior
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    • v.19 no.2
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    • pp.81-103
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    • 2022
  • The effects of therapeutic instrumental music performance (TIMP) using a ukulele were examined in adults with central nervous system damage and impaired hand functions. The participants were three adults with neurological damage who participated in 30-min sessions twice a week over 6 weeks. Changes in hand function was measured by the Box and Block Test (BBT), the 9-Hole Peg Test (9-HPT), and the Jebsen-Taylor Hand Function Test (JTHFT). Following the intervention, all three participants showed increases in the BBT and 9-HPT scores, indicating positive changes in fine motor coordination and dexterity. In terms of the JTHFT, all three participants showed increases in the "writing" and "card flipping" subtask scores, indicating that the intervention was effective in improving more coordinated finger movements. All participants reported the satisfaction with the intervention. They also pointed out that they were motivated to play the ukulele and that following the intervention used their affected hand more frequently in daily activities. These findings suggest that TIMP with a ukulele for patients with central nervous system damage can have positive effects on their functional hand movements and motivate these patients to practice their rehabilitation exercises.

Effect of Virtual Reality-based Occupational Therapy Interventions for Disabled Children and Adolescents: A Systematic Review (장애 아동 및 청소년에게 가상현실(VR) 기반 작업치료 중재가 미치는 영향: 체계적 고찰)

  • Kim, Man-Je;Gil, Young-Suk;Kang, Set-Byul;Lee, Jae-Shin
    • The Journal of Korean Academy of Sensory Integration
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    • v.21 no.1
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    • pp.34-46
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    • 2023
  • Objective : The purpose of this study was to systematically analyze the methods by which virtual reality (VR)-based occupational therapy interventions are applied to disabled children and adolescents and to assess their effectiveness. Methods : The RISS, DBpia, KCI, Science Direct, and CINAHL MEDLINE databases were searched for relevant literature from January 2012 to August 2022. The main search terms used were "virtual reality," "work therapy," "youth," "virtual reality," "occupational therapy," "child," and "adolescent." A total of 16 documents were selected for analysis by the 4th stage of the PRISMA flowchart. Results : In the 16 selected studies, VR-based occupational therapy when used with children and adolescents with disabilities and was shown to have meaningful effects. Among the types of cerebral palsy covered in the studies, the most common was hemiplegia, and the evaluation tools used for measurement of the VR effect were daily activities, cognition, exercise technology, social-interaction technology, and visual-perception evaluation. Nintendo wii and Microsoft Kinect produced the VR tools most commonly used to improve motor skills and daily life. Conclusion : The results of this study indicate that VR interventions can be used effectively in clinical practice. In the future, they may assist in the diagnosis of disabled children and adolescents, in helping to select VR tools that are suitable for the purposes of intervention, and in the presentation of specific methods.