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이향석(Hyang-Seok Lee),김연하(Yeon-Ha Kim),김순희(Soon-Hee Kim) 한국생활환경학회 2015 한국생활환경학회지 Vol.22 No.6
The purpose of this study was to investigate the risk factors of suicidal behavior(suicidal ideation – plan–attempt) among adolescents. The data of the 10<SUP>th</SUP> (2014) Korea Youth Risk Behavior Web-based Survey was analyzed by x²-test and multiple logistic regression. The risk factors of suicidal behavior were grade, school performance, perceived social economic status, residence type, perceived health status, perceived happiness, stress, depression, alcohol, smoking and drug experience. Therefore it is necessary to develop suicide prevention program that can control those influencing factors. In addition, intervention program that can enhance the ability of managing the crisis is urgent in priority of female students.
단일 ㄱ형강의 블록전단 파단 및 전단지체 현상 -고력볼트 3개 또는 4개로 접합된 단일 ㄱ형강-
이향하,심현주,이은택,Lee, Hyang Ha,Shim, Hyun Ju,Lee, Eun Taik 한국강구조학회 2004 韓國鋼構造學會 論文集 Vol.16 No.5
본 연구는 볼트개수 3개 또는 4개로 접합된 인장력을 받는 ㄱ형강의 블록전단 파단시, 전단지체 효과를 분석하여 AISC의 블록전단식과 순단면파단식을 비교 검토하였다. 볼트 3개 또는 4개로 접합된 실험체의 경우 순단면 파단과 같은 블록전단, 순단면 형태의 파단으로 파단되었다. 실험결과는 블록전단에 영향을 미치는 접합길이, 실험체의 두께, 감소계수 등을 변수로 분석하였다. 실험결과에 따라, 블록전단내력 산정시 Kulak의 제안한 감소계수 U를 계산해서 적용하는 것이 필요한 것으로 판단된다. The purpose of this paper was to investigate the block shear and the fracture in the net section, according to AISC Specifications, by analysing the shear lag effect in the block shear rupture of the single angle with three or four bolt connection. Specimen with three or four bolt connections showed that failure generally went from block shear with some net section failures to classic net section failures. From the test results, showed that the connection length, the thickness of angle, and reduction factor, which affect the block shear rupture, were investigated. According to the test results, it is suggested that the calculation of the net section rupture capacity by using the reduction factor of U, that was suggested by Kulak, is needed.
하정식 ( Ha Jeong Sig ),정인배 ( Jeong In Bae ),조주형 ( Jo Ju Hyeong ),이향아 ( Lee Hyang A ),엄민섭 ( Eom Min Seob ),박광화 ( Park Gwang Hwa ) 대한산부인과학회 2003 Obstetrics & Gynecology Science Vol.46 No.11
Intramural pregnancy is one of the rarest forms of ectopic pregnancy. The pathologic diagnosis of the intramural ectopic pregnancy requires that the myometrium surrounds the products of conception separated from the endometrial cavity or fallopian tubes.
단일 ㄱ형강의 블록전단 파단 및 전단지체현상 - 고력볼트 2개로 접합된 단일 ㄱ형강 -
이은택(Lee Eun-Taik),김진호(Kim Jin-Ho),박지영(Park Ji-Young),이향하(Lee Hyang-Ha) 대한건축학회 2004 大韓建築學會論文集 : 構造系 Vol.20 No.11
The purpose of this paper is to compare with the property of block shear design code according to the limit state design of steel structures and AISC Specifications by analysing the shear lag effect in the block shear rupture of the tension joints. From the results of this experimental program, the connection length, thickness of angle and reduction factor which affect the block shear rupture were investigated. According to the test results, it is suggested that the calculation of the block shear capacity by using the shear length due to the real rupture line and the reduction factor of U that was suggested by Epstein is needed. Also, in the single angle two bolt connection, the ratio of the width and connection length is small. In this case, reduction factor(0.75) is closer to the experimental values when reduction factor(Ue = 1 - (X/L)) is compared with U=0.75.
뇌전증 소아청소년 환아의 자아개념에 영향을 미치는 요인에 대한 연구
하수희(Su Hee Ha),최희연(Hee-Yeon Choi),이향운(Hyang Woon Lee),김의정(Eui-Jung Kim) 대한소아청소년정신의학회 2017 소아청소년정신의학 Vol.28 No.4
Objective: The purpose of this study was to investigate the impact of clinical and psychological factors on the self-concept of children and adolescents with epilepsy. Methods: Children and adolescents with epilepsy (n=60; age range=9–17 years) completed questionnaires about their epilepsy-related variables, self-concept, depressive symptoms, anxiety, family functions, and behavioral problems. The T-test and one-way analysis of variance were used to examine the variables affecting the total self-concept scores. To determine the independent variables by adjusting the significant variables, a stepwise regression analysis was performed. Results: In the correlational analysis, age, depressive symptoms, anxiety, social problems, attention problems, and internalizing problems had significantly negative correlations with self-concept. On the other hand, IQ and family functions showed positive correlations with self-concept. Age (β=–0.177, p=0.015), depressive symptoms (β=–0.487, p<0.001), anxiety (β=–0.298, p=0.008), and attention problems (β= –0.138, p=0.048) were analyzed as independent factors to assess their impact on self-concept, and were found to account for 78.3% of the variance in self-concept by stepwise regression analysis. Conclusion: Parents and clinicians should pay attention to improving the self-concept of children and adolescents with epilepsy, especially if they have problems with depression, anxiety, or attention.
이지연 ( Ji Yeon Lee ),신승호 ( Seung Ho Shin ),하중규 ( Joong Gyu Ha ),최성권 ( Song Kwon Choi ),이승구 ( Seung Koo Lee ),나성훈 ( Sung Hoon Na ),이향아 ( Hyang Ah Lee ),이동헌 ( Dong Heon Lee ),황종윤 ( Jong Yun Hwang ) 대한산부인과학회 2010 Obstetrics & Gynecology Science Vol.53 No.11
Isolated tubal torsion is a rare disease that causes acute lower abdominal pain. In most of cases, the ovary and the fallopian tube are together twisted due to an ovarian tumor, but the fallopian tube alone is rarely twisted. Tubal torsion mainly occurs in fertile women, and it rarely occurs prior to menarche and during menopause. We experienced a case where isolated tubal torsion occurred in a perimenopausal female with total abdominal hysterectomy, while the findings showed a normal ovary. We report this case with a brief review of related literature.
Electroencephalogram Power Spectra in Thioacetamide-induced Hepatic Encephalopathy
김지희,최원진,박정숙,이향이,하정희,이만기,Lee, Chi-Hui,Choi, Won-Jin,Park, Jung-Sook,Lee, Hyang-Yi,Ha, Jeoung-Hee,Lee, Maan-Gee The Korean Society of Pharmacology 1996 대한약리학잡지 Vol.32 No.3
흰쥐에 thioacetamide(TAA)를 투여하면 간성뇌장애가 유발된다. 두가지 행동 상태(꼬리 접촉자극 및 미자극)와 세 단계의 신경학적 이상의 단계(정상, 약한 운동실조, 심한 운동실조)별로 뇌파를 기록하였고, 뇌파 스펙트럼 및 대역 분석을 통하여 간성뇌장애 진행동안 뇌파의 정량적인 변동을 관찰하였다. 정상 쥐에서 자극은 $theta(3.5{\sim}8\;Hz)$ 및 $gamma(30{\sim}50\;Hz)$ 대역의 power을 증가시켰다. 운동실조가 있는 쥐에서 이러한 변화가 일어나지 못하였다. 꼬리 자극을 하는 상태에서 theta 대역의 변화는 gamma 대역의 변화 보다 더욱 일찍 관찰되었다. 신경학적 행동 단계가 심해짐에 따라서 $beta3(21{\sim}30\;Hz)$ 및 gamma 대역에서 power가 점차적으로 감소하였다. 또한 간성뇌장애의 신경학적 증상은 benzodiazepine계 물질에 의하여 야기된다는 가설이 있으므로 beta power의 증가가 관찰될 것으로 기대하였으나 이 연구에서는 관찰하지 못하였다. 이 결과들로 미루어 볼때 이 연구에 사용된 스펙트럼 및 대역 분석이 간성뇌장애동안 신경학적 증상의 정도를 정량화 할 수 있다고 생각된다. During the development of hepatic encephalopathy after thioacetamide (TAA) injection to rat, EEG was recorded at two different states: without or with tactile stimulation of tail at regular intervals. Calculations based on the spectral and band analysis were used. The changes in the power spectra and bands were examined in 3 different behavioral stages: normal, mild ataxia and severe ataxia. In normal rats, the stimulation produced the increase in the power of the theta $(3.5{\sim}8\;Hz)$ and the gamma $(30{\sim}50\;Hz)$ bands. These changes could not be produced in rats with the mild and severe ataxia. The changes in the power of the theta band occurred earlier than those of the beta3 and the gamma bands in the stimulated state. Gradual decreases in the spectral power of the beta3 $(21{\sim}30\;Hz)$ and the gamma bands were correlated with the progress of the stages from normal condition to mild to severe ataxia in both unstimulated and stimulated states. The results indicate that the spectral and band analysis used in this study can quantify the severity of the neurological malfunction during HE.
이성태 ( Sung-tae Lee ),이향아 ( Hyang-ha Lee ),이창욱 ( Chang-wook Lee ),오근탁 ( Guan-tak Oh ),이윤배 ( Yun-bae Lee ) 한국정보처리학회 2004 한국정보처리학회 학술대회논문집 Vol.11 No.1
원격 교육에서 실습 관련 교과목에 대한 이해 접근 방법은 시각적인 학습을 통해 이루어지는 것이 보다 효율적이고 능률적이다. 그러나 사이버 강의에서 실습관련 교과목 피드백 시 직면하게 되는 가장 대표적인 문제점은 설명하기 어렵거나 이해하기 어려운 상황에 대해 학습자는 문자로서만 교수자에게 전달해야 하고, 교수자는 그 상황을 유추해서 응답 해주어야 한다는 사실이다. 따라서 학습 매체로써 탄력적인 수업이 이루어지기 위해서는 다양한 형태의 피드백으로 강의 컨텐츠를 개발하고 이를 적용하여, 교수자가 학습자의 실습 내용을 실시간으로 볼 수 있는 프로그램과 시스템의 개발이 필요하다. 본 연구에서는 여기에 초점을 맞추어 실습과목의 효과적인 피드백을 구현할 수 있는 방법을 제안하고 검증하였다.