정수기 냉온수 탱크 원통형 드로잉 제품의 재질 변화에 따른 두께 변화에 관한 연구

장은정,이춘규,Jang, Eun-Jeong,Lee, Chun-Kyu 한국금형공학회 2021 한국금형공학회지 Vol.15 No.3

In plate forming technology, cylindrical drawing process is widely used in industry due to technological development. In this study, we used stainless steel 3042B and stainless steel 304J1, which are the most commonly used materials in the production of cold and hot water tanks for water purifiers, among cylindrical drawing products. Under the same conditions, the thickness of the sidewall of the product formed by drawn experiment was studied. As a result of the experiment, the bottom thickness of stainless steel 304J1 was considered to be thick. It is judged that the defect rate can be reduced by changing the breaking phenomenon of the floor surface of the cold and hot water bottles to the material of stainless steel 304j1. Stainless steel 304 2B material shows a sharp change in thickness from punch corner R to sidewall position, while stainless steel 304J1 material showed a uniform change from punch corner R to sidewall position. Stainless steel 304J1 material is considered to improve the clamping of the product in the process of extracting the product after hand drawing. The appearance of stainless steel 3042B products is considered to produce more wrinkles in the flange, which exerts greater tensile force on the sidewall during molding, resulting in uneven sidewall thickness.

The Efficacy of Letrozole in Women with a Poor Endometrial Response to Clomiphene Citrate

장은정,지병철,Jang, Eun-Jeong,Jee, Byung-Chul The Korean Society for Reproductive Medicine 2010 Clinical and Experimental Reproductive Medicine Vol.37 No.1

목 적: 클로미펜을 이용한 배란유도 주기에서 불량한 자궁내막 발달을 보이는 불임 여성에서 레트로졸의 효용성을 알아보고자 하였다. 연구방법: 2004년 3월부터 2009년 8월까지 분당서울대학교병원에서 클로미펜을 이용한 배란유도 주기에서 자궁내막 두께가 6.5 mm 이하여서 다음 주기에 레트로졸을 사용하였던 18명의 불임 여성을 선정하였다. 환자들의 평균 연령은 $30.7{\pm}2.8$세, 불임 기간은 $33.1{\pm}26.6$개월이었다. 불임의 인자는 자궁내막증이 1명, 다낭성난소증후군이 5명, 원인불명의 불임증이 12명이었다. 레트로졸은 2.5 mg의 용량으로 월경 3~5일 사이에 시작하여 5일간 투여하였다. 결 과: 이전 클로미펜 사용시와 비교하였을 때 레트로졸 주기에서 우성난포의 개수는 더 적었으나 ($1.1{\pm}0.3$ vs. $2.2{\pm}1.5$, p=0.011) 자궁내막 두께는 유의하게 증가하였으며 ($8.4{\pm}1.7$ mm vs. $5.8{\pm}0.5$ mm, p<0.001) 자궁내막 패턴 중 type C의 빈도는 이전 클로미펜 주기에서 50%이었던 것이 레트로졸 사용시 94.4%로 유의한 증가를 보였다 (p=0.036). 레트로졸을 이용한 배란 유도 주기에서 임신율은 11.1%였다. 결 론: 얇은 자궁내막 발달을 보였던 클로미펜 주기에 비해 레트로졸 사용시 자궁내막이 좀 더 두꺼워지고 패턴이 호전되는 것으로 보아 클로미펜에 불량한 자궁내막을 보이는 여성에서 이차 선택약제로 레트로졸의 사용은 유용한 방법으로 사료된다. Objective: To examine the efficacy of letrozole in infertile women showing a poor endometrial development at previous ovulation induction cycle by using clomiphene citrate. Methods: Eighteen infertile women were selected who showed a poor endometrial development (endometrial thickness$\leq$6.5 mm) after clomiphene treatment (50~100 mg) as ovulation induction for timed coitus. The mean age of the patients was $30.7{\pm}2.8$ years old and the mean duration of infertility was $33.1{\pm}26.6$ months. The infertility factors were identified as corrected endometriosis (n=1), polycystic ovary syndrome (n=5) and unexplained (n=12). Letrozole was given orally in a dose of 2.5 mg for 5 days starting 3~5 of menstrual cycle. Results: The number of follicles was significantly lower in the letrozole cycle when compared with previous clomiphene cycle ($1.1{\pm}0.3$ vs. $2.2{\pm}1.5$, p=0.011). The endometrial thickness (mm) at the time of triggering or LH surge was significantly greater in the letrozole cycle ($8.4{\pm}1.7$ vs. $5.8{\pm}0.5$, p<0.001). The endometrial pattern 'type C' was significantly higher in the letrozole cycle (94.4% vs. 50%, p=0.036). The pregnancy was achieved in 11.1% of the letrozole cycle. Conclusion: Use of letrozole was associated with more thick and improved endometrium than previous clomiphene cycles in which thin endometrium was identified. Use of letrozole appears to be an effective strategy for second-line treatment in women with inadequate endometrial response to clomiphene.

Comparison of Oral Micronized Progesterone and Dydrogesterone as a Luteal Support in Intrauterine Insemination Cycle

장은정,지병철,김상돈,이정렬,서창석,Jang, Eun-Jeong,Jee, Byung-Chul,Kim, Sang-Don,Lee, Jung-Ryeol,Suh, Chang-Suk The Korean Society for Reproductive Medicine 2010 Clinical and Experimental Reproductive Medicine Vol.37 No.2

Objective: To compare the clinical outcomes between oral micronized progesterone and dydrogesterone as a luteal phase support in stimulated intrauterine insemination (IUI) cycles. Methods: A retrospective analysis was performed in 183 IUI cycles during January 2007 to August 2009. Superovulation was achieved by using gonadotropins combined with or without clomiphene citrate. The luteal phase was supported by oral micronized progesterone 300 mg/day (n=136 cycles) or dydrogesterone 20 mg/day (n=47 cycles) from day of insemination. Results: There were no significant differences in clinical characteristics such as age of female, infertility factors, number of mature follicles ($\geq$16 mm), total motile sperm counts, and endometrial thickness on triggering day between the two groups. The clinical pregnancy rates per cycle were similar between the two groups (21.3% in the micronized progesterone group vs. 19.1% in the dydrogesterone group, p=0.92). The clinical miscarriage rate tended to be 3-fold higher in the micronized progesterone group (34.5% vs. 11.1%, p=0.36). Conclusion: Supplementation of oral dydrogesterone as a luteal support has similar clinical outcomes compared with oral micronized progesterone. Large-scaled randomized study would be required to confirm our findings. 목 적: 과배란유도 후 자궁강내 인공수정 시술시 황체기 보강으로서 경구 미분화 프로게스테론 투여법과 경구 디드로게스테론 투여법의 임상적 효용성을 비교하고자 하였다. 연구방법: 2007년 1월부터 2009년 8월까지 시행된 과배란유도 후 자궁강내 인공수정 시술 183주기를 후향적으로 분석하였다. 과배란유도는 성선자극호르몬 단독 또는 클로미펜과 성선자극호르몬의 병합요법을 사용하였다. 136주기에서는 황체기 보강으로서 경구 미분화 프로게스테론을 하루 300 mg으로 투여하였고 47주기에서는 디드로게스테론을 일일 20 mg으로 투여하였다. 결 과: 여성의 연령, 불임 인자, 성숙난포수 ($\geq$16 mm), 총운동성정자수, triggering 날의 자궁내막 두께는 두 군간 유의한 차이가 없었다. 자궁내 태낭이 확인되는 임상적 임신율은 미분화 프로게스테론 투여군에서 21.3%, 디드로게 스테론 투여군에서 19.1%로 차이가 없었다 (p=0.92). 유산율은 미분화 프로게스테론 투여군에서 다소 높은 경향을 보였으나 통계학적인 차이는 없었다 (34.5% vs. 11.1%, p=0.36). 결 론: 황체기 보강으로서 경구 디드로게스테론 투여법은 경구 미분화 프로게스테론 투여에 비하여 비슷한 임신율과 유산율을 보였다. 그러나 상대적으로 디드로게스테론 투여군의 수가 적어 좀더 많은 환자를 대상으로 한 전향적 연구가 필요하다.

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장은정,서안나,이선재,박지영,Eun Jeong Jang,An Na Seo,Sun-Jae Lee,and Ji-Young Park,Ph.D. 대한갑상선-내분비외과학회 2011 The Koreran journal of Endocrine Surgery Vol.11 No.1

연안 환경에서 클러터에 강인한 능동소나 탐지 알고리듬

장은정,권성철,오원천,이정우,신기철,김주호,Jang, Eun Jeong,Kwon, Sungchur,Oh, Won Tcheon,Lee, Jung Woo,Shin, Keecheol,Kim, Juho 한국음향학회 2019 韓國音響學會誌 Vol.38 No.6

연안 환경에서 소형 표적의 탐지에는 고주파 능동소나가 적합하다. 연안 환경에서 고주파 능동소나를 사용할 경우 해양 생물 소음, 선박 소음, 항적 등에 의한 클러터로 인하여 오경보율이 매우 높다. 본 논문에서는 연안 환경에서 능동 소나에서 클러터에 강인한 탐지 알고리듬을 제안한다. 제안된 알고리듬은 측정치 추출 시 신호의 통계적인 특징을 이용하는 Constant False Alarm Rate(CFAR)와 클러스터링 알고리듬을 이용하여 클러터 제거율을 높인다. 제안 된 탐지 알고리듬은 해상 시험을 통하여 검증하였으며, 약 96 % 이상의 클러터를 제거하였다. High frequency active sonar is appropriate for detecting small targets such as a diver in coast environment. In case of using high frequency active sonar in shallow coastal environment, a false alarm rate is high due to clutters caused by marine biological noise, ship noise, wake, etc. In this paper, we propose an algorithm for target detection which is robust against clutter in active sonar system in shallow coastal environment. The proposed algorithm increases the rate of reduction clutter using calculation of statistical characteristics of signal and a clustering method. The algorithm is evaluated and analysed with sea trial data, as a result, that shows the rate of reducing rate of clutter of 96 % and over.

대만 중소기업 청년창업지원 법제에 관한 고찰

장은정(Jang, eun jeong) 충북대학교 법학연구소 2015 法學硏究 Vol.26 No.1

The current Korean government has set up ‘creative economy’ as a strategic goal from the beginning, put forward job creation, economic renewal and growth as part of overcoming youth unemployment, and positively provides governmental and non-governmental supports to vitalize youth foundation, but still has a long way to go in terms of effectiveness. Thus, this study introduces the relevant legislation of Taiwan where the small and medium enterprise-based foundation is in high spirits. Korea and Taiwan traditionally lack resources and have a similar industrial structure such as the export-oriented economic structure and high level of dependence on foreign sectors, but Korea has grown as the conglomerate-centric economic structure, while Taiwan has driven development policies highly regarding the stable growth of economy and national welfare and achieved the small and medium enterprise-centric growth of economy. Taiwanese young people are also difficult to get a job, and although they are employed, their wage is not enough. In this reality, the Taiwanese government often holds events related to foundation such as the foundation idea contest to encourage youth’s foundation, and moreover, the government opens the age of one-man business and solidifies their realization of foundation by supporting them with policies and legislation. In addition, it thoroughly classifies the required items and very concretely and minutely prescribes targets for foundation fund, principal sum of loan, interest rate, redemption period, scale of startup business and targets of ban, to help youth found companies actively. Besides these, it helps successfully lead foundation through a variety of education programs from the process of preparation for foundation to after foundation, all of which are conducted on the basis of the one-stop system and managed thoroughly by the Small and Medium Enterprise Administration of the Economic Ministry. As the investment funds in the internationalization of strategies for foundation and R&D are also properly subsidized by government under the name of the foundation loan, the door of application for foundation fund is also widely opened. Furthermore, by finding and citing for excellent startup businesses, it more raises the heat of youth’s foundation and increases effectiveness of foundation policies. As the world economy recovers recently, our conglomerates are also achieving hugh business performances. However, these performances are realistically considered as the feast only for conglomerates, there is the public uproar over the win-win relation between conglomerates and smaller enterprises. Therefore, for young people living in this land called as the sampo generation (generation who gives up courtship, marriage and childbirth) and in the high rate of youth unemployment, if we consult Taiwan, which is known as the paradise for small and medium enterprises with government’s positive support and the heat of foundation added under the small and medium-centric economic structure, Taiwanese policy for the small and medium business promotion, such as the support for youth’s foundation and the relevant laws, would provide good implications for us to help young people found a business, grow as strong and healthy businesses, raise the rate of employment and contribute to the economic growth.

한·중 FTA 관련 중국 정부조달시장 개방에 관한 중국정부조달법(政府采構法) 연구 및 대응방안 모색

張銀淨(Eun Jeong Jang) 중앙법학회 2012 中央法學 Vol.14 No.3

These days when globalization and localization coexist, FTA with China, a country actively interacting in local, economical, cultural ways in new international economic order`s flow, has been in the middle of arguments in industrial, educational, governmental research for several years, and due to the effort, both countries tap their economical, tactical interests that lead to official announcement of the start of FTA negotiation on May 2nd2012. At this point, the crucial assignment for Korea related to our country`s national interest, is to think of a way to carry out the FTA negotiation well strategically. A setup of a clear purpose of the FTA with China, detailed tactics, and counter plan are needed, and it seems like opening of government procurement market is going to be discussed just as it was during Korean-United States`` FTA negotiation. Chinese government procurement market has a short history since the first introduction of government procurement law in 1998, but it has a massive scale and a fast rate of growth based on its domestic market that has unlimited potential and foreign exchange reserves of three trillion dollars along with increased income level due to rapid growth. Since the Chinese government procurement market is the last closed market, and the size of it is tremendous, and that the market strongly affects our companies`` expansion, the opening of Chinese procurement market is an accomplishment we must achieve. In order to do so, the research and detailed analysis of Chinese government procurement law are necessities. Through this paper, I wish to analyze the legal system related to the government procurement and its problems, and to analyze of its differences with WTO GPA to suggest a direction towards the government procurement negotiation with China.

아웃도어 여성소비자의 소비가치가 관계품질 및 장기관계지향성에 미치는 영향

장은정 ( Eun-jeong Jang ),이은진 ( Eun-jin Lee ) 한국의류학회 2017 한국의류학회지 Vol.41 No.1

This study analyzed the effects of consumption value of outdoor female consumers on relationship quality and long-term relationship orientation as well as differences in consumption value, relationship quality and long-term relationship orientation by demographic characteristics. A survey was conducted from May 15-22, 2016; subsequently, 336 responses were used in the analysis. Statistical analysis methods consisted of fre-quency analysis, factor analysis, reliability analysis, t-test, ANOVA, and regression analysis. The results in-dicate that the consumption value of outdoor female consumers was composed of functional value, emotion-nal value, epistemic value, situational value, and social value. Relationship quality was composed of satis-faction, commitment, and trust. Consumption value (functional value, emotional value, epistemic value, sit-uational value, and social value) of outdoor female consumers positively affected satisfaction. Emotional value, epistemic value and situational value positively affected commitment; in addition, functional value and emotional value positively affected trust. Satisfaction, commitment, and trust about outdoor brand also positively affected the long-term relationship orientation; in addition, consumption value positively affected long-term relationship orientation. There were significant differences in the consumption value and relation-ship quality by age and marital status. The study results provide useful information for the marketing strate-gies of outdoor brands that consider female consumers.

Single port Laparoscopic surgery with a wound retractor(초)

장은정 ( Eun Jeong Jang ),( Jung Ryeol Lee ),( Sang Don Kim ),( Hye Jin Chang ),( Byung Chul Jee ),( Chang Suk Suh ) 대한산부인과학회 2009 대한산부인과학회 학술대회 Vol.95 No.-

대한간학회지 제8차 춘계학술대회 초록집 : 구연 ; 만성 B형 간염환자에서의 Nucleoside Analogue인 Clevudine(L-FMAU-102)의 28일 투약에 따른 안전성, 내약성 및 항 바이러스 효과의 평가

장은정 ( Jang Eun Jeong ),이효석 ( Lee Hyo Seog ),김경아 ( Kim Gyeong A ),유병철 ( Yu Byeong Cheol ),김정룡 ( Kim Jeong Lyong ) 대한간학회 2002 Clinical and Molecular Hepatology(대한간학회지) Vol.8 No.2(S)