커패시턴스 센싱을 통한 섬유 입력 인터페이스 설계와 동작성 연구

정재훈,Jeong, Jae Hoon 한국섬유공학회 2015 한국섬유공학회지 Vol.52 No.6

This study proposes a fabric-type input device that provides mobility by using a weighted value based on the movement velocity between 16 individual capacitors composed of conductive textile. In addition, the proposed device measures the rate of change of dielectric permittivity based on pressure or touch and provides the function like a mouse. A capacitor is composed of a conductive material ($37m{\Omega}/sq$), where a coating of copper and nickel is applied to polyester, and the area of the capacitor is $10mm(W){\times}10mm(L)$. The lower layer is composed of non-conductive fabric having a thickness of 1.36 mm, and the interval between each capacitor is 8 mm with four columns and four rows. Before touch, the capacitance was 120 pF and after touch, the capacitance increased up to 820 pF. In a monitor having a resolution of $1920{\times}1080$, it was observed that the average mobility of a mouse was 60.89 mm and the standard deviation was 0.92 mm, while for a fabric interface, the average mobility was 965.77 mm and the standard deviation was 7.37 mm.

승보사찰 송광사

정재훈,Jeong, Jae-Hun 한국자연공원협회 1998 한국자연공원 Vol.70 No.-

특허확대경 - 사례를 통해 본 정정요건

정재훈,Jeong, Jae-Hun 한국발명진흥회 2011 發明特許 Vol.36 No.3

원전 해체 종합 검토 - 한국전력기술(주)의 원전 해체 준비 현황

정재훈,Jeong, Jae-Hun 한국원자력산업회의 2017 원자력산업 Vol.37 No.12

한국 성인에서 주관적 인지저하를 동반한 우울증의 특성과 삶의 질 : 제 7기 국민건강영양조사를 중심으로

정재훈,김성진,정도운,문정준,전동욱,김연수,최현석,이민주,전경수,Jeong, Jae-Hoon,Kim, Sung-Jin,Jung, Do-Un,Moon, Jung-Joon,Jeon, Dong-Wook,Kim, Yeon-Sue,Choi, Hyeon-Seok,Lee, Min-Joo,Jeon, Gyeong-Su 한국정신신체의학회 2021 정신신체의학 Vol.29 No.1

Objectives : This study aimed to investigate quality of life, severity of depression, suicidality, subjective health and subjective stress of depression with subjective cognitive decline in Korean adults. Methods : We used the 7th KNHANES data to enroll 415 participants with a score of 10 or higher on Patient Health Questionnaire-9 (PHQ-9), aged 20-64. Depression was divided into two groups based on the presence/absence of subjective cognitive decline. Demographic and psychological characteristics were compared between two groups. Correlation analysis of subjective cognitive decline, quality of life, depression, suicidal idea was carried out. To detect which variables influenced quality of life, a multiple regression analysis was carried out. Results : Among the 415 participants, 98 had depression with subjective cognitive decline. We identified significant differences in age, marital status, education, employment between the two groups. After adjusting for these variables, depression with subjective cognitive decline had lower EuroQol-5D index scores, more severe depressive symptoms without cognition and worse subjective health than depression without cognitive decline. There was a significant correlation between subjective cognitive decline and quality of life (r=-0.236, p<0.001), suicidal idea (r=0.182, p<0.001), depression score without cognition (r=0.108, p=0.028). Through multiple regression analysis, subjective cognitive decline was predictor of reduced quality of life (β=-0.178, p<0.001). Conclusions : Depression with subjective cognitive decline has poor quality of life and severe depression. Cognitive decline should be considered to improve treatment result in depression. 연구목적 국내의 성인을 대상으로 주관적 인지 저하를 동반한 우울증에서 삶의 질, 우울의 심각도, 자살 관련 특성, 주관적 건강 상태 및 스트레스 인지에 대해 조사하고자 하였다. 방 법 국민건강영양조사 제 7기 자료를 이용하여 Patient Health Questionnaire (PHQ-9)에서 10점 이상인 인구 415명을 대상으로 하였다. 주관적 인지 저하 유무에 따라 두 군의 특성 차이를 비교했다. 주관적 인지 저하와 삶의 질, 우울, 자살사고의 상관성을 보기 위해 상관분석 및 회귀 분석을 실시했다. 결 과 주관적 인지 저하를 동반한 우울증 집단이 삶의 질과 주관적 건강이 더 좋지 않았고 우울의 심각도가 심했다. 주관적 인지 저하와 삶의 질은 음의 상관관계, 자살사고와 우울은 양의 상관관계를 보였다. 회귀 분석을 통해 주관적 인지 저하가 삶의 질에 부정적 영향을 미치는 것을 확인했다. 결 론 주관적 인지 저하를 동반한 우울증은 삶의 질을 저해하고 우울의 심각도가 심하며 삶의 질, 자살사고 및 우울을 악화시키는 것으로 확인되었다.

휘담식 진동기 골반수기로 개선된 급성 요통 증후군으로 인한 보행장애 증례

정재훈,필감매,나삼식,Jeong Jae hun,Gam Mai Pil,Sam Sik Na 대한의료기공학회 2022 醫療氣功 Vol.21 No.1

Objective : The purpose of this study is to report the results of treating patients with acute low back pain syndrome who are difficult to walk with Whidam's Vibrator Pelvic Sugi Therapy. Methods : We used combinations of korean medicine such as herbal medicine, acupuncture, cupping therapy, and thermal therapy. At the same time, the patient was treated with Whidam's Vibrator Pelvic Sugi Therapy. The first period of hospitalization was 14 days and the second period was 54 days. At the second hospitalization, back pain recurred and was unable to walk. At the first hospitalization, L5-S1 HIVD and L4-5 Mild HIVD were diagnosed on lumbar MRI, and there was no abnormality in blood tests. Results : By relieving muscle tension and restoring the weakened muscle elasticity with herbal treatment and Whidam's Vibrator Pelvic Sugi Therapy, back pain decreased and the inability to walk gradually improved, making it possible to walk on its own. Conclusions : The results of standing and walking on one's own were obtained by relieving muscle tension and restoring weakened muscle elasticity in acute back pain syndrome with gait disturbance diagnosed with lumbar herniated intervertebral disc through korean medicine treatment and Whidam's Vibrator Pelvic Sugi Therapy. Whidam's Vibrator Pelvic Sugi Therapy is thought to help acute back pain by restoring muscle elasticity and strengthening muscle strength. In the future, it is expected that additional clinical studies will be conducted on various pain diseases with Whidam's Vibrator Pelvic Sugi Therapy.

개화기 사과 '후지'와 '홍로'의 품종간 저온 피해율, 호르몬과 유리당 분석

정재훈,한점화,류수현,조정건,이슬기,Jeong, Jae Hoon,Han, Jeom Hwa,Ryu, Suhyun,Cho, Jung Gun,Lee, Seul-Ki 한국생물환경조절학회 2021 생물환경조절학회지 Vol.30 No.4

최근 지구온난화에 의한 이상기상으로 겨울철 한파와 봄철 저온에 의한 농작물 피해가 심각하게 발생하고 있다. 특히 과수의 개화기 저온피해는 꽃눈의 생육단계에 따라 차이가 있으며 발육이 진전될수록 내한성이 약해져 개화 직전부터 낙화 후 1주까지 한계온도가 다르게 발생한다. 따라서 개화기가 빠른 사과 '홍로'가 '후지'보다 피해가 심각한 것이 일반적이나 2020년 4월 저온피해는 개화기가 늦은 '후지'의 피해가 심하게 발생하여그 원인을 분석하고자 본 연구를 수행하였다. 충북 보은군 사과나무 '후지'와 '홍로'를 동시에 재배하는 2농가를 대상으로 품종 간 피해율 실태조사를 실시하였다. 또한 정확한 품종 간 비교 분석을 위하여 생육단계가 동일한 시료를 선택하여 인위적으로 저온처리(-2.0℃, -4.0℃)를 하여 피해 정도를 조사하고, 원인 분석을 위해 조직 내 유리당과 호르몬 함량을 분석하였다. 실태조사 결과 2농가 모두 '후지'가 '홍로'보다 피해율이 높았으며, 특히 B농가(저지대, 평지) '후지'의 경우 피해율이 60.5%로 가장 높았다. 또한 동일한 생육단계의 시료를 사용한 인위적 저온 처리 시험결과에서도 '후지'와 '홍로' 품종 간 피해율에 유의한 차이가 있었다. 유리당 함량은 저온 피해율이 낮았던 '홍로'가'후지'보다 높았으며, 호르몬 분석 결과 정상 꽃눈보다 손상된 조직에서 ABA, IAA와 SA 함량이 높게 나타났다. 따라서 본 연구 결과 조직내 유리당 함량이 높으면 저온 피해율이 낮은 것을 확인할 수 있었으며, 특히 저온 피해율은 sorbitol 함량과 부의 상관관계를 이루고 있다. Freezing damage to fruit trees is frequently occurring due to cold in winter and low temperature in spring to abnormal weather caused by global warming. In particular, the freezing injury of deciduous fruit trees is highly dependent on the developmental stages of the flower buds. And the cold resistance is weakened as the growth progresses, so it is most vulnerable period from flowering to petal fall(post-bloom). Therefore, this study was conducted to analyze the cause of the freezing injury caused by severe low temperature to 'Fuji', which has a late flowering period more than 'Hongro' in April 2020. We investigated freezing injury rate in 'Fuji' and 'Hongro' apple trees damaged by natural low temperature at Boeun-gun, Chungbuk province in Korea. In addition, flower buds in the same developmental stage (tight cluster) were treated artificially low temperature to investigate the injury rate for accurate comparative analysis between varieties, and to analyze the soluble sugar and hormone contents in the flower buds. As a result of survey in natural low temperature, 'Fuji' had a higher injury rate than 'Hongro' in both orchards, and in particular, B orchard 'Fuji' had the highest injury rate of 60.5%. Also there were significantly difference in the freezing injury rate between 'Fuji' and 'Hongro' in artificially low temperature treatments. As a result of analyzing the soluble sugar contents in 'Hongro' was higher than 'Fuji'. Also ABA, IAA and SA contents were more increased in the damaged tissue than in the normal flower buds by low temperature treatments. Consequently, it was assumed that the freezing injury was closely related to soluble sugar contents in the flower buds. In particular, the freezing injury rate was negatively correlated with the sorbitol contents.

전자상거래의 패러다임과 우리의 대응

정재훈,Jeong, Jae-Hun 대한석유협회 2000 석유와 에너지 Vol.2000 No.3

포스코건설-해운대 아델리스 신축현장

정재훈,Jeong, Jae-Hun 한국건설안전협회 2005 建設 安全技術 Vol.33 No.-

최첨단 해양 관광 도시로 그 당당한 위상을 자랑하는 부산 수영만, 그곳에 우뚝 서는 초고층 대형 주거 공간, 출렁이는 해운대 푸른 바다의 아름다운 자연 경관이 펼쳐지는 포스코 건설 the# 해운대 아델리스 현장을 소개한다.

키드 증후군의 안과적 증상과 조직학적 특징

정재훈,전연숙,이수현,정행선,김재찬,Jae Hoon Jeong,M,D,Yeoun Sook Chun,M,D,Ph,D,Soo Hyun Lee,Ph,D,Haeng Sun Jeong,Ph,D,Jae Chan Kim,M,D,Ph,D 대한안과학회 2008 대한안과학회지 Vol.49 No.9

Purpose: Keratitis-ichthyosis-deafness (KID) syndrome is a congenital ectodermal disorder presenting the triad of vascularizing keratitis, erythrokeratoderma, and sensorineural deafness. Ocular manifestations such as hyperkeratinization of the eyelids, loss of eyelashes, keratoconjunctivitis sicca, corneal erosions, ulceration, neovascularization, and scarring opacity may be absent or mild, but if present and severe, they can lead to major visual loss. We report a patient with KID syndrome with severe ocular manifestations and the histologic characteristics of a corneal lesion. Case summary: A 5-year-old boy was referred to the Ophthalmology Department for bilateral hyperkeratinization of eyelids, bare eyelashes, and corneal opacity. He showed hyperkeratotic skin lesions and sensorineural hearing loss. Molecular analysis showed a mutation in the GJB2 gene and confirmed the diagnosis of KID syndrome. Initial conservative treatment did not preserve ocular surface integrity, and instead it was maintained by surgical procedures including superficial lamellar keratectomy with amniotic membrane transplantation. The histologic characteristics of corneal lesions are abnormal epithelial differentiation, absence of connexin 26 expression, and partial destruction of the basement membrane. J Korean Ophthalmol Soc 2008;49(9):1532-1538