고유수용성신경근촉진법이 경추추간판탈출증 환자의 통증 및 손의 악력에 미치는 효과

김재용,김민수,김좌준,Kim, Jae-Young,Kim, Min-Soo,Kim, Jwa-Jun 대한고유수용성신경근촉진법학회 2015 PNF and Movement Vol.13 No.3

Purpose: The current study aims to identify the effects of proprioceptive neuromuscular facilitation (PNF) on pain and grip strength in patients with cervical herniated intervertebral disc (HIVD) and provide effective interventions for such patients. Methods: Included in this study were 20 subjects (10 men, 10 women) in their 30s-50s who had been diagnosed with cervical HIVD. Intervention methods included PNF neck patterns, dynamic reversal of antagonists, and a combination of isotonics. The visual analogue scale (VAS) was used to measure pain and dynamometers were used to measure grip strength. Results: After four weeks of muscle strengthening exercises, neck pain was significantly reduced, and hand grip strength significantly increased. Conclusion: PNF can be utilized as an effective intervention to reduce the pain of patients with cervical HIVD and to increase grip strength.

남북의 문학적 통합과 북한문학으로서의 재월북 작가 연구

김재용(Kim, Jae-yong) 국어국문학회 2014 국어국문학 Vol.- No.168

Korea writers who choose North Korea after emancipation is very important in the unification of North and South Korea. Especially the poet Baik-suk and Novelist Han-Sulya is very important because they spent so long years in North Korea and can not write freely. The poet Imhwa and Novelist Lee-taejun spent so short time in North Korea after escaping from South Korea. So, they are not important in contrast to Baik-Suk and Han-Sulya. The poet Lee-Yongak and the novelist Lee-Kiyoung spent all their life in North Korea aftner emancipation. they had no tension with North Korean state regime. They followed the polictics of government without tension and conflict. Considering these situations, Baik-Suk and Han-Sulya is very important in literary unification of South and North Korea. But there are so many problems in studying these writers in South Korean literary study scene. Now So many scholars who study the poem of Bai-Suk do not want to study the poems of North-Korea because they are the result of state control and censorship of North Korea government. So many scholars who study the work s of Han-Sulya interpret that his works that represent anti-japanese activity of Kim ?Ilsung in Manchuria under the Japanese Empire is the result of personal cult. These kind of attitudes are originated from the consciousness of cold war. To know poet Baik-Suk, we should study all his poems from Japanese Empire period to North-Korea period. It is very ridiculous for scholar to select and study only poems produced in Japanese Empire period. To know novelist Han-Sulya, we should consider historical situation of his work’s production. His works that deal with anti-japanese movement of Kim-Ilsung was created to evoke the historical facts which is concealed from Japanese censorship. It is very different from the works of personal cult that is created from 1967 based on idea of Juche. To study the Korean writers who choose North Korea after emancipation is very important in the process of literary unification. It is very important for scholar to free from cold war consciousness.

시각적 바이오피드백 균형 훈련이 뇌졸중 환자의 균형 회복에 미치는 영향

김재용,김대경,Kim, Jae-Yong,Kim, Dae-Kyung 대한고유수용성신경근촉진법학회 2017 PNF and Movement Vol.15 No.2

Purpose: The purpose of this study is to determine the effects of visual biofeedback training on the recovery of balance function in stroke patients. Methods: A total of 30 patients with stroke were chosen as the subjects of this study. The subjects were randomly divided into either the visual biofeedback balance training group (experimental group; n=15) or the general balance training group (control group; n=15). The visual biofeedback balance training and general balance training were implemented for 30 minutes a day, three times a week, for a total of four weeks. The subjects' balance ability was measured before and after the interventions. Results: The shift length and surface area of the center of the body decreased in both the experimental group and the control group, with the difference being statistically significant. The shift length and surface area of the center of the body both decreased more in the experimental group than in the control group, and there was a statistically significant between-group difference. Conclusion: The experimental group showed a greater improvement in terms of the balance ability of patients with stroke than the control group. Therefore, we believe that visual biofeedback balance training can be effectively applied for the improvement of balance ability in patients with stroke.

우울증에 대한 예측모형

김재용,민병주,이재훈,장재승,하태현,하규섭,박태성,Kim, Jaeyong,Min, Byungju,Lee, Jaehoon,Chang, Jae Seung,Ha, Tae Hyon,Ha, Kyooseob,Park, Taesung 한국통계학회 2014 응용통계연구 Vol.27 No.2

양극성 장애는 조증 삽화(manic episode)와 주요 우울삽화(major depressive episode)를 특징으로 하는 정신질환이다. 주요 우울삽화 시기에는 양극성 장애 환자들의 810%가 자살하는 것으로 알려져 있다. 그러므로 양극성 장애 환자를 치료할 때, 우울증상의 정도를 측정하는 것이 중요하다. 우울증상의 정도를 측정하기 위해 가장 많이 사용하는 검사법은 해밀턴 우울평가 척도(Hamilton depression rating scale)이다. 본 논문에서는 해밀턴 우울평가척도 점수를 이용하여 환자들의 치료 효과를 예측하기 위해 선형혼합효과모형(linear mixed effects model)과 전이모형(transition model)을 제시하였다. 예측을 위해 사용된 자료는 분당서울대학교병원을 방문하여 초진일 당시의 해밀턴 우울평가 척도 점수가 8 점 이상인 환자들의 정보를 사용하였다. 첫 조사시점부터 6개월, 12개월 후 세 차례에 걸쳐 관측된 해밀턴 우울평가 척도 점수를 선형혼합효과모형과 전이모형에 적합시켰다. 그 결과를 토대로 특정시점의 해밀턴 우울평가 척도 점수를 예측하였다. 첫 조사시점부터 6개월, 12개월 후의 해밀턴 우울평가 척도 점수를 사용해 선형혼합효과모형과 전이모형에 적합 시켰다. 이 모델들을 이용해 조사시점부터 24개월 후의 해밀턴 우울평가 척도 점수를 예측한다. 이 예측모델은 조사된 24개월 후의 점수와 예측된 24개월의 후의 점수를 비교하여 평가하였다. Bipolar disorder is a psychopathy characterized by manic and major depressive episodes. It is important to determine the degree of depression when treating patients with bipolar disorder because 810% of bipolar patients commit suicide during the periods in which they experience major depressive episodes. The Hamilton depression rating scale is most commonly used to estimate the degree of depression in a patient. This paper proposes using the Hamilton depression rating scale to estimate the effectiveness of patient treatment based on the linear mixed effects model and the transition model. Study subjects were recruited from the Seoul National University Bundang Hospital who scored 8 points or above in the Hamilton depression rating scale on their first medical examination. The linear mixed effects model and the transition model were fitted using the Hamilton depression rating scales measured at the baseline, six month, and twelve month follow-ups. Then, Hamilton depression rating scale at the twenty-four month follow-up was predicted using these models. The prediction models were then evaluated by comparing the observed and predicted Hamilton depression rating scales on the twenty-four month follow-up.

반도체 테스트 핸들러 측정점간의 온도 편차 감소

김재용,조수영,강태삼,이호준,고광일,Kim, Jae-Yong,Cho, Su-Young,Kang, Tae-Sam,Lee, Ho-Joon,Koh, Kwang-Ill 대한전자공학회 1998 電子工學會論文誌, S Vol.s35 No.10

The temperature difference occurs at the test points of chamber, because the traditional Test Handler consists of a heater and a fan. To reduce the temperature variation at different points in the chamber, we divided the heater to three parts which are controlled independently. First, we identified the chamber's parameter and then designed a LQG controllers by the identification model. RTD sensors and VME system were used to construct the temperature control system. In our experiment for the proposed control system, the temperature variation was reduced from ${\pm}1.5^{\circ}C$ to ${\pm}0.35^{\circ}C$ at 50$^{\circ}C$ ${\cdot}$ 80$^{\circ}C$ and 120$^{\circ}C$. 기존의 테스트 핸들러는 단일 히터와 팬을 사용하여 항온조내의 IC 테스트점들 사이에 온도 편차가 발생한다. 본 논문에서는 온도 분포가 중간 부분과 가장자리 부분의 온도 오차가 심한 문제에 착안하여, 기존의 히터를 3등분하여 3지점의 온도를 각각 제어함으로써 측정점의 위치에 따라 온도 편차를 줄이는 방안을 제시하였으며, 온도 챔버의 파라미터의 식별과 식별된 모델에 기초하여 LQG 제어기를 설계하였다. 항온조의 온도를 일정하게 유지하기 위하여 RTD 센서와 VME 시스템을 이용하였다. 실험 결과 챔버의 위치에 따른 온도 편차를 50$^{\circ}C$ ${\cdot}$ 80$^{\circ}C$와 120$^{\circ}C$에서 기존의 ${\pm}1.5^{\circ}C$에서 ${\pm}0.35^{\circ}C$로 줄임으로써 그 성능을 개선하였다.

Gas Adsorption Studies of Ar Molecules on a High-Energy-Beam Irradiated MgO Surface

김재용,Euikwon Kim,이정길,이윤만,Jaekyun Jeon,이상화,신혜민 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.5

Gas adsorption studies are useful to investigate the ne structure of a surface on an atomic scale. A meso-sized MgO (100) powder surface prepared by using the RF-induction method was irradiated by using an electron beam with energy of 2 MeV. The amount of electron beam dosage was varied from 20 kGy to 1000 kGy. By measuring the Ar gas adsorption data recorded below the triple point (83.78 K), we analyzed the surface changes in the MgO powder before and after the electron beam irradiation. X-ray and TEM investigations revealed that the surface structure was not affected by the irradiation with an electron beam. Calculated values of the 2-dimensional compressibility and the isosteric heat of adsorption coherently showed that a stronger interaction of Ar molecules existed for the electron-irradiated MgO powders than for the pure samples. These results imply the possibility of local surface modification due to bombardments with external electrons.

청소년 운동몰입과 스마트폰 중독에 대한 융합연구

김재용,Kim, Jae-Yong 한국융합학회 2021 한국융합학회논문지 Vol.12 No.4

본 연구는 청소년 스마트폰 중독을 경감하는 것으로 알려진 스포츠 활동을 토대로, 운동몰입과 스마트폰 중독간의 구조적 인과관계를 규명하고자 한다. 먼저, 선행연구를 바탕으로, 청소년의 운동몰입이 사회적 지지 및 자아탄력성을 통해 스마트폰 중독 경감에 효과가 있음을 밝히고, 이러한 인과관계가 성별에 따라 유의한 차이가 있음을 제시하고자 한다. 이를 위해 605명의 중고등학생을 대상으로 설문조사를 실시한 후, SPSS 25.0와 AMOS 23.0프로그램을 이용한 구조방정식 모형을 분석하여 설정된 잠재변인간의 구조 관계를 분석하였다. 분석 결과, 청소년의 운동몰입은 스마트폰 중독에 부적 영향을 미치는 것으로 나타났으며, 위 두 변인의 관계에서 사회적 지지와 자아탄력성은 매개효과를 나타내는 것으로 확인되었다. 또한, 이러한 결과는 성별로 유의한 차이를 보였다. 본 연구는 스마트폰 중독과 스포츠의 융합연구 분야에 있어 참여시간, 기간, 강도 등을 이용한 기존 연구와는 달리 심리적 인식 변인인 운동몰입과의 관계를 밝힘으로써 연구 영역을 확장하였으며 개인적 특성 변인과의 구조적 관계와 성별로 차별화된 접근이 중요함을 제시하였다. 이를 통해 청소년의 스마트폰 중독문제에 있어 심층적인 융합연구와 및 성별로 차별화된 프로그램 개발을 위한 기초자료를 제공하였다는데 그 의의가 있다. Based on sports known to reduce adolescents' smartphone addiction, this study aims to identify the structural causal relationship between sport commitment and smartphone addiction. First of all, based on prior studies, it was intended to show that adolescents' sport commitment is effective in reducing smartphone addiction through social support and ego-resilience, and that such causal relationships vary significantly depending on gender. To this end, a survey of 605 middle and high school students was conducted, and the structural relationship between the four established latent variables was analyzed by analyzing the structural equation model using the SPSS 25.0 and AMOS 23.0 programs. According to the analysis, adolescents' sport commitment was found to have an adverse effect on smartphone addiction, and social support and ego-resilience in the relationship between the two variables were found to have a mediated effect. In addition, these results showed significant differences in gender. This study expanded the field of smartphone addiction and sports convergence study by revealing the relationship between sport commitment as psychological recognition variable and addiction Unlike previous studies using a participation time, duration, and intensity, and suggested that structural relationships with personal characteristic variables and gender-specific approaches are important. Through this, it is meaningful that it provided basic data for in-depth convergence study in the smartphone addiction and development of gender-specific programs.

함정사업 시험평가의 효율적 수행방안에 관한 연구

김재용,최원석,홍석윤,정현균,송지훈,임우석,권현웅,Kim, Jaeyong,Choi, Woensug,Hong, Sukyoon,Chung, Hyungyun,Song, Jeehun,Im, Wooseok,Kwon, Hyunwung 한국군사과학기술학회 2016 한국군사과학기술학회지 Vol.19 No.6

The purposes of this study is to identify the problems arising from current Test & Evaluation process of the naval ship acquisition program and to suggest methods to increase the acquisition efficiency. Considering that the present rule of developmental test &evaluation(DT&E) and operational test & evaluation(OT&E) has caused an inefficiency effect on the acquisition procedures due to the limited practices on it, the DT&E and OT&E procedures through test & evaluation master plan(TEMP) is proposed based on the selective practices of the defense instruction articles. Also, considering characteristics of naval ship acquisitions, efficient procedure systems are derived through case analysis results by comparing each performances of the system. The suggested methods are able to meet the requirements of the changed acquisition environments and also increase efficiency of acquisition systems by adoption of DT&E and OT&E combined test scheme.

Comparison of Bonding Strength by Cleaning Method of Pediatric Zirconia Crown Contaminated with Saliva or Blood

김재용,박호원,이주현,서현우,Kim, Jaeyong,Park, Howon,Lee, Juhyun,Seo, Hyunwoo Korean Academy of Pediatric Dentistry 2018 大韓小兒齒科學會誌 Vol.45 No.2

The objective of this study was to compare the shear bonding strength of zirconia after cleaning the crown contaminated by saliva or blood and determine the effect of thermocycling. 180 specimens were embedded in acrylic resin. 20 Specimens in the positive control group were bonded with resin cement without contamination. 20 Specimens in the negative control group were washed with water for 20 seconds and then dried for 10 seconds. 120 Specimens contaminated by saliva or blood were cleaned by using three cleaning methods: 37% phosphoric acid gel, commercial cleanse, and 2.5% NaOCl. All samples were bonded with resin cement and divided into two subgroups: One was not aged, and the other was tested with 30,000 thermocycling. In both groups contamination by saliva and blood, no statistically significant difference was not found in control, groups cleansed by commercial cleanser and 2.5% NaOCl. When the groups cleansed with water and 37% phosphate gel were compared with the control, significantly low shear bond strength was shown. Thermocycling group showed statistically significantly low shear bond stress compared to the groups without thermocycling. When zirconia was contaminated by saliva or blood, its original shear bond strength could be obtained if it was cleaned with commercial cleanser or 2.5% NaOCl. 본 연구의 목적은 타액이나 혈액에 오염된 유치 지르코니아 기성관의 내면을 다양한 세척 방법으로 세척 한 뒤, 레진 시멘트와의 결합력을 비교하고, 열 순환이 결합력에 미치는 효과를 평가하였다. 지르코니아 기성관의 내면과 유사한 상태의 지르코니아 절편($5mm{\times}3mm$)을 아크릴릭 레진에 매몰하였다(n=180). 이 중 160개의 시편을 무작위로 두 군으로 나누어 타액 오염과 혈액 오염을 시행하였다. 양성 대조군은 오염 과정을 거치지 않고 resin cement로 접착을 시행하였고, 음성 대조군은 오염 후 dental unit chair 상의 물로 20초간 세척 후 10초간 건조를 시행하였다. 타액 오염된 시편과 (n=60) 혈액 오염된 시편(n=60)은 각각 세 가지 방법의 세척을 시행하였다. 37% 인산 젤, 상용 세척제(Ivoclean), 2.5% NaOCl을 각 시편에 20초간 적용 후 10초간 물로 세척하고 건조를 시행하였다. 이 후 모든 시편(n=160)에 접착을 시행하였다. 대조군과 각 실험군을 모두 절반으로 나누어 절반은 바로 전단응력을 측정하였고, 절반은 열 순환 과정 후 전단응력을 측정하였다. 타액오염과 혈액오염을 시행한 군 모두에서, 양성 대조군과 상용 세척제, 2.5% NaOCl으로 세척한 군에서 통계학적으로 유의한 차이는 존재하지 않았다. 음성 대조군과 37% 인산 젤로 세척한 군의 전단 결합 강도는 양성 대조군과 비교하였을 때, 유의하게 감소하였다. 열 순환 시행 시 타액 오염을 시행한 군과 혈액 오염을 시행한 모든 군에서 열 순환을 시행하지 않은 군보다 통계적으로 유의하게 낮은 전단 응력 간도를 나타내었다. 유치 지르코니아 기성관 내부의 타액 오염이나 혈액 오염 시, 상용 세척제나 2.5% NaOCl로 세척을 시행하면 원래의 전단응력 값을 얻을 수 있다. 열 순환 시행 시 모든 군에서 유의하게 낮은 전단 응력 값을 보였다.

생간건비탕(生肝健脾湯)이 HepG2 cell의 증식, 세포사멸 및 활성조절 신호전달계에 미치는 영향

김재용,김영철,이장훈,우홍정,Kim, Jae-Yong,Kim, Young-Chul,Lee, Jang-Hoon,Woo, Hong-Jung 대한한방내과학회 2006 大韓韓方內科學會誌 Vol.27 No.1

Objectives: This study was done to evaluate the effects of Saengkankunbi-tang on cell-viability, proliferation, cell-cycle, apoptosis and DNA replication on HepG2 cell and to find out by which molecular-biological mechanism by which Saengkankunbi-tang operates. Methods : The MTT assay, cell counting assay, [3H]-thymidine incorporation assay, flow cytometric analysis, tryphan blue exclusion assay, western blot analysis, quantative RT-PCR were taken. Results : Saengkankunbi-tang had no effect on proliferation, cell-cycle and DNA replications of HepG2 cells, while it improved cell viability and reduced apoptosis, and it activated Akt and NFKB. But, it did not produce an effect on cell viability and apoptosis when P13K/Akt pathway was blocked by LY294002 nor when $NF{\kapa}B$ activation was blocked by DN-$I{\kapa}B$. Conclusion : These results suggests that Saengkankunbi-tang improves cell viability and reduces apoptosis of HepG2 cells, by activating $NF{\kapa}B$ through PI3K/Akt pathway.