출산에 따른 그레이브스병의 재발 및 관련이자

임창훈,최현아,한승석,김해성,이창욱,정호연,한기옥,장학철,박원근,윤현구,한인권 대한내분비학회 2002 Endocrinology and metabolism Vol.17 No.2

Background: Pregnancy affects the course of Graves' Disease (GD), and patients who initially maintain euthyroid function into their middle trimester with minimum doses of antithyroid drugs become exacerbated after delivery. Even patients who are completely cured, requiring no treatment during pregnancy, can relapse after delivery. In this study, we examined the postpartum changes in the thyroid functions of patients with GD, and attempted to determine the factors contributing to these changes. Methods: The study subjects were recruited from pregnant women visiting our outpatient clinic for routine prenatal evaluations. 45 women previously diagnosed with GD, who had been treated and cured with hyperthyroidism, and were no longer taking any thyroid medications, were evaluated for 1 year post delivery. Results: Among 45 patients, 20 (44.4%) developed thyroid disorders following delivery. Postpartum thyroiditis (PPT) developed in 8 patients (17.8%), and GD developed in 12 (26.0%). The onset of the PPT disease 3.1 ± 1.4 months following delivery, which was significantly earlier than the 6.7 ± 2.7 months required for the post delivery onset of GD (p=0.003). The TBII values, measured during the thyrotoxic state in each womaen, were negative in women with PPT and positive in 71.4% of women with GD (p=0.030). The duration of treatment for hyperthyroidism prior or pregnancy, the number of recurrences, and the time interval without treatment, were not associated with the development of postpartum thyroid disorders. Whereas, the mean number of past pregnancies for women who developed PPT was 3.9 ± 2.1, and was significantly higher than the 2.2 ± 1.7 for women developing no thyroid dysfunctions (p=0.044). In 13 women their initial onset of GD occurred within one year postpartum, 7 (53.8%) having had a recurrence, which was significantly higher than in women whose disease onset occurred unrelated to delivery (5 of 32 women: 15.6%). Conclusion: Women with GD developed postpartum thyroid dysfunctions in 44.4% of cases. Women whose initial disease onset occurred within one year postpartum had higher recurrences of GD, and women who developed PPT had a history of higher gravidity compared to the euthyroid women postpartum. Therefore, if women with GD develop postpartum thyroid dysfunctions, the diagnosis should be made, and a treatment modality planned, following careful considerations of the patients' past obstetric history, changes in clinical manifestations and the TBII values

옴니채널 커머스에 대한 소비자의 지각된 가치와 만족이 쇼핑 채널 전환의도에 미치는 영향에 관한 연구

장창권(Chang-Kwon Jang),지영수(Yong-Shou Chi),강문영(Moon-Young Kang),한경석(Kyeong-Seok Han) 한국인터넷전자상거래학회 2016 인터넷전자상거래연구 Vol.16 No.4

Thanks to the rapid growth of smart phone distribution rate, the consumers are using different shopping channels at once or aim an optimum shopping experience through on-time channel changes. However, the current multi or cross channels have limits to satisfy the consumers becoming ‘smarter’ everytime so it is essential the appearance and application of omni-channel which is more suitable in the current shopping environment. Although the omni-channel commerce throughout the world is just in its initiatives, Asian countries are not very active in introduction or development of omni-channel related services and it lacks the research on this field compared to the Occident. Therefore, this study investigated the relationship among perceived value, satisfaction and shopping channel switching intention of consumers to promote the omni-channel activation plan.

하상변동 예측을 위한 1차원 컴퓨터 모형 개발에 관한 연구

김재한,정관수,장창래 忠南大學校 産業技術硏究所 1998 산업기술연구논문집 Vol.13 No.2

The behavior and characteristics of rivers are highly complex and depend on the numerous environmental changes. Predicting and analyzing the river bed changed in the long term are important to river planning and management. River bed changes have widely influenced river and watershed managements in short and long term. So, many computer models for the channel and sediment flows due to these problems have been developed to predict river characteristics. But these models have required a lot of data and handing works. In this study a simplified mathematical computer model for a generalized river reach is developed to improve these one-dimensional models and predict unmeasured and straightened rivers, and this computer model is compared with one-dimensional model, HEC-6, and quasy-two-dimensional model, GSTARS2.0. The results of this computer model show reasonable agreements with these of HEC-6 and GSTARS2.0

하저를 통과하는 철도 쉴드 터널 설계시 고려사항에 대한 연구

주광수(Kwang-Sue Jue),심동현(Dong-Hyun Sim),김기창(Ki-Chang Kim),장선종(Sun-Jong Jang),최창림(Chang-Rim Choi),한석희(Seok-Hee Han) 한국철도학회 2012 한국철도학회 학술발표대회논문집 Vol.2012 No.5

최근 국가기간 철도망의 도심지 통과시 민원 및 환경, 기존 노선과의 접속 등의 이유로 구조물 근접, 하저, 퇴적층~경암의 복합지반 등 점점 더 가혹한 현장조건에서도 터널공법의 적용이 요구되어 지고 있으며, 이들 조건에서도 안전하게 시공이 가능한 쉴드(Shield) TBM에 대한 적용이 증가하고 있다. 본 고에서는 대곡~소사 복선전철 민간투자시설사업 구간 중 한강 하저를 횡단하는 철도 쉴드(Shield) TBM 터널 설계시 주요 고려사항에 대해 기술하고자 한다. 특히, 하저구간 통과시의 고수압 조건과 한강 하류지역의 지질학적 특성으로 인한 풍화대 심도가 불규칙한 복합지반, 다수의 단층파쇄대, 퇴적층 등의 불량한 지반조건을 통과하기 위한 쉴드 TBM의 검토사항과 터널안정성 확보를 위한 주요 설계 방안을 중점적으로 다루고자 한다. Recently, despite of the harsh conditions such as adjacent structures, underwater tunnel, and complex grounds, tunnel construction has been performed inevitably in underground metropolitan area because of civil complaint, environment and connection with existing railway. Thus, it has been increasingly demanded to be constructed by Shield TBM excavation method that can be a safe way under these adverse conditions. In this paper, we would like to introduce the major considerations about the shield tunnel design for passing through under the Han-River among the BTL Project of double-track electrification in the Deagok~Sosa section. Especially, Focus on key design strategies are discussed in Shield TBM and securing the tunnel stability for passing through under the river, such as high water pressure, complexity ground, many fault fractured zone, sedimentary layer

태권도 선수들의 운동 만족이 정신건강 및 생활 만족에 미치는 영향

한권상,손창남,임상호,류경희,장지현,김태우 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.4

The purpose of this study is to determine how a Taekwondo player's athletic satisfaction affects his/her psychological health and overall personal happiness. A questionnaire survey was carried out on a sample group of 200 students attending colleges located in Seoul and Gyeonggi Province. Then, 23 questionaries deemed not trustworthy were eliminated, leaving 178 questionaries for analysis. The questionnaire, which contained total 128 questions, showed the confidence level falling between .5241 and .8945 (Cronbach's alpha). The study, which relied on frequency analysis, t-test, One-way ANOVA, and Scheffe test, produced the following results. First, athletic satisfaction showed a statistically significant difference (5% range) depending on sex, school year or athletic experience. Second, psychological health resulted in a statistically significant difference (5% range) depending on sex or athletic experience while no difference was noticed regarding school year. Third, happiness in life showed a statistically significant difference (5% range) depending on sex or school year while no difference was noticed with regard to athletic experience.

만성중이염 수술전·후의 골도청력역치의 변화에 대한 연구

한장환,전일권,조창건,박선태,방진현 대한이비인후과학회 2001 대한이비인후과학회지 두경부외과학 Vol.44 No.7

Plyometric Training 박스의 높이 차이가 남자 핸드볼 선수의 점프력에 미치는 영향

장창현,김승권,한주욱 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

Twenty four male middle school and high school handball players were involved an adapted Plyometric Training program which was composed of depth jump and box jump, 3 days a week for B weeks. The jump ability factor before and after the training was analyzed, and the following conclusions were drawn 1. The group trained with higher box showed greater increase in their vertical jump ability than the group trained with lower box for both middle and high school players. 2. The group trained with higher box showed greater increase in their vertical running jump ability than the group trained with lower box for both Middle and high school players. 3. The group trained with higher box showed greater increase in the ability of staying in the air than the group trained with lower box for both middle and high school players. 4. The middle school players showed greater increase in the jump ability than the high school students.

2급 응급구조사의 성인외상환자에 대한 처치의 적절성 평가

장문수,어은경,김상현,김창섭,송근정,박한규,유지영,최동섭 대한응급의학회 1995 대한응급의학회지 Vol.6 No.2

In Korea, EMT have two classified subgroup of first and second degree : EMT-P, and EMT. For the beginning, authorization of the first EMT was made in this year through the EMT educational program. There are 8 items which EMT can perform the treatment without the supervision by a physician. But there was no previous report of pertinent assesment of treatment performed by the EMT. There upon authors have conducted review of assessment done by the EMT in EC setting, and proposed the following treatment application can be used by EMT at the field of accident. The study materials include adult trauma patient older than 15 years, and sustained trauma within 48 hours before visiting Ewha University DongDaeMoon Hospital Emergency Deparment. The duration of study was from Apr. 1 1995 to Aug. 31 1995. the study was conducted by 5 certified EMT. The EMT's performance was evaluated by the attending Emergency Medicine physician. The result were as followings ; 1. Among the total 5532 ED visiting patients during the study period, 1267 were adult trauma patients who recieved treatment within 48 hours of injury. 2. Among 1222 out of 1267 patients have completed performed survey. 3. Male to female ratio was 2.6 : 1, age distribution was from 15 to 87 years old and mean age was 34.6 years old. 4. The MOI showed : MVA (33.1%), blunt trauma (29.9%), slip down (16.8%), penetrating injury(15.4%), and miscellaneous (5.7 %), burn (3.1%), falling down injury(2.9 %), bite injury(1.1%) in order. 5. There were 437 cases of survey completed by the EMT. For assessment of mental status of 3 different method : AVPU, 5 scale mental status and GCS, were correlated with EM physician with 99.1%, 98.6%, 97.7 %, respectively. 6. For 320 out of 437 cases of survey completed, 319 patients recieved treatment by the EMT within 30 minute and 1 patient between 30 to 60 minute of an ED arrival. 7. For those 437 cases of survey completed, 266 patient (60.9%) had adequate treatment and 54 patients (12.4%) had inadequate treatment. 67 patient (15.3%) did not received treatment but it was adequate inway, and 50 patients (11.9%) did not received treatment even though patient required treatment. In cases of adult trauma patients, EMT's mental status assessment was correlated with EM physician's assessment. But treatment done by EMT without the supervision of EM physician was adequate only in 76.2 %. Therefore, continuous education and assessment of treatment performed by EMT in needed to improve field treatment by EMT future.

片面補剛平板의 剛性硏究

韓秉基,張昌訓 弘益大學校 1985 弘大論叢 Vol.17 No.2

A new structural model is presented for the analysis of the rigidity of eccentrically stiffened plate with rectangular cross-sectional stiffeners. The following postulations are employed for the derivation of rigidity: (1) The orthogonally stiffened plate element is constructed of two parts; the secured part composed of stiffener and plate attached to the stiffener, and the pure plate part without stiffener. (2) The continuity condition should be satisfied at the interface between the secured part and the plate part to from them into a monolithic structure. Several existing theories for the rigidity of stiffened plates are computed and compared with the present theory. In the present theory, the bending rigidity are almost same with the existing theories. The torsional rigidity, however, shows significant difference between present theory and existing theories. The experiment on the torsional rigidity is performed to check the accuracy of the theories. By the result the present theory shows the good accuracy for the torsional rigidity.

주름잡힌 板의 剛性에 대한 理論解析과 實驗的 硏究(山型)

韓秉基,張昌訓,宋東浩 弘益大學校 1986 弘大論叢 Vol.18 No.2

In this paper, the triangular-wave type corrugated plate, which is a kind of the stiffened plate-structures for increasing the load-carrying ability and optimizing the economy, is investigated. On the base of small displacement theory, analysis method for the theoretical investigation of such a plate is proposed, and using the aluminium specimen which is bend-formed to triangular-wave type, four point bending experiment and three point supporting-one point loading torsional experiment are carried out. Good experimental confirmation of the validity of the proposed analysis method is found.