UV 검출기 제작을 위한 $8{\times}8$ ReadOut IC에 관한 연구

김주연,김태근,Kim, Joo-Yeon,Kim, Tae-Geun 대한전자공학회 2005 電子工學會論文誌 IE (Industry electronics) Vol.42 No.3

산업용, 의학용 및 군사용, 환경감시용 등 다양한 분야에서 UV 카메라가 이용되고 있다. 높은 분해능과 고효율을 가진 GaN 계열의 III-V족 질화물 반도체를 이용하여 제작한 UV 센서인 포토다이오드로 부터 최적의 자외선 응답을 읽어낼 수 있는 ROIC(ReadOut IC)를 개발 했다. FPA(Focal Plane Array)용 UV $8{\times}8$ ReadOut IC(ROIC)를 설계를 위하여 포토다이오드 타입 센서 소자를 커패시터로 모델링하였다. ROIC는 검출되는 신호를 받아 이를 증폭하고 잡음제거 필터링을 거쳐 픽셀 단위로 순차적으로 출력하는 기능을 수행하도록 하였다. ROIC는 $0.5{\mu}m$ 2Poly, 3Metal N-well CMOS process를 이용하여 제작되었으며, 이방성 전도성 페이스트 (Anisotropic Conductive Paste:ACP)를 사용하는 gold stud bumping 공정으로 ROIC와 포토다이오드 어레이를 하이브리드 패키지 (package)한 후 PC에서 자외선 영상으로 확인함으로써 ROIC의 동작을 검증하였다. A UV camera is being used in various application regions such as industry, medical science, military, and environment monitoring. A ROIC(ReadOut IC) is developed and can read the responses from UV photodiode sensors which are made with III-V nitride semiconductors of GaN series haying high resolution and high efficiency. To design FPA(Focal Plane Array) UV $8{\times}8$ ROIC, the photodiode type sensor devices are modeled as the capacitor type ones. The ROIC reads out signals from the detector at)d outputs sequentially pixel signals after amplifying and noise filtering of them. The ROIC is fabricated using the $0.5{\mu}m$ 2Poly 3Metal N-well CMOS process. And then, it and photodiode array are hybrid bonded by gold stud bumping process using ACP(Anisotropic Conductive Paste). After the packaging, UV images appearing on PC verified the operations of the ROIC.

2018 대한부정맥학회 심실빈맥 전극도자 절제술 가이드라인 Part 2

김주연,김성환,Yoo Ri Kim,김윤년,김준,김태훈,남기병,노승영,박경민,박형섭,박희남,배은정,오세일,윤남식,이만영,조영진,진은선,조용근,차태준,최종일 대한부정맥학회 2018 International Journal of Arrhythmia Vol.19 No.2

The recommendations outlined constitute the first clinical practice guidelines of the Korean Heart Rhythm Society regarding catheter ablation of ventricular arrhythmias (VA). This is a guideline PART 2, which includes VA in the structurally normal heart, inherited primary arrhythmia syndromes, VA related to congenital heart disease, as well as VA and sudden cardiac death observed in specific populations. In the structurally normal heart, treatment is guided by the occurrence of symptoms or the frequency of arrhythmias that cause ventricular dysfunction over time. Catheter ablation can be recommended in patients in whom anti-arrhythmic medications are ineffective. The sites of origin of arrhythmic activity are known to be the outflow tract, fascicles, papillary muscle, or the annulus. Specific cardiac channelopathies include congenital long QT and Brugada syndrome. This guideline discusses the diagnostic criteria, risk stratification, and treatment of these syndromes. We have included recommendations for adult congenital heart disease. Moreover, we have discussed the management of VA occurring in specific populations such as in patients with psychiatric and neurological disorders, pregnant patients, those with obstructive sleep apnea or drug-related pro-arrhythmias, athletes, and elderly patients.

국가기록원의 소장기록물 저작권 요청 사례 분석

김주연,최재황,Kim, Joo Yeon,Choi, Jae Hwang 한국도서관정보학회 2014 한국도서관정보학회지 Vol.45 No.2

국가기록원은 소장기록물의 저작권을 보호하기 위하여 현재 '소장기록물 저작권 운영지침'과 '열람실 운영규정'을 마련하여 운영 중이다. 그러나 국가기록원 '소장기록물 저작권 운영지침'과 '열람실 운영규정'은 저작권법의 준용 또는 국가기록원 내부의 저작권 관리 원칙만을 규정하고 있을 뿐 소장기록물에 대한 기록물 유형별 저작권 문제는 제시하지 못하고 있다. 이미 수집된 소장기록물의 이용 활성화를 위해서는 기록의 각 유형별 저작물의 판단 기준이나 원칙을 제시하여, 이용자들이 쉽게 저작권 문제에 접근할 수 있도록 별도의 상세한 세부지침이 마련되어야 하며, 향후 소장기록물 수집을 위해서도 저작재산권이나 저작인격권에 대한 세부사항을 규정할 필요가 있다. 본 연구는 이를 위한 사전분석이다. 향후 소장기록물과 관련된 저작권 측면의 활발한 논의와 운영 방안이 모색되어야 할 것이다. The National Archives of Korea(NAK) has arranged and operated 'Guidelines on Operating Copyright for Archives' and 'Regulations on Operating Reference Room' to protect the copyright for archives. However, the Guidelines and the Regulations only provide application to the Copyright Act and principles on internal managing copyright without presenting copyright issues for each type of archives. Therefore, additional detailed guidelines have to be arranged for the users to access to copyright issues easily by presenting them the standards of judgement or principles on copyright issues for each type of the archives to facilitate the use of archives collected already. We also need to define the details on Copyright Act and Moral Rights Act to collect archives. This study is an prior analysis for that purpose. Lively discussion and way of operation in an aspect of the copyright in relation to private records should be sought in the future.

포도막염에 의한 이차개방각녹내장에서 마이토마이신 섬유주절제술과 아메드밸브삽입술의 임상성적

김주연,심형섭,김황기,손용호.Joo Yeon Kim. MD. Hyoung Sub Shim. MD. Hwang Ki Kim. MD. Yong Ho Sohn. MD. PhD 대한안과학회 2010 대한안과학회지 Vol.51 No.4

Purpose: To assess and compare the clinical outcomes of primary trabeculectomy with mitomycin C and Ahmed valve implantation for secondary open-angle glaucoma following uveitis. Methods: This study was conducted retrospectively on 30 eyes of 25 patients with open-angle glaucoma secondary to uveitis that had undergone trabeculectomy with mitomycin C and 33 eyes of 24 patients that had undergone Ahmed valve implantation. The clinical outcome indicators used in this study were intraocular pressure (IOP), number of anti-glaucoma agents, surgical success rate and occurrence of complications. Results: Mean IOP and surgical success rate in patients who had undergone trabeculectomy with mitomycin C after a 12 month postoperative period were 14.0±8.2 mmHg and 76.7%, respectively, while those of patients with Ahmed valve implantation were 13.2±7.7 mmHg and 81.8%. The data did not show clinical significance. There was greater risk of surgical failure in patients at a younger age and/or with diabetes mellitus in cases of having gone through trabeculectomy with mitomycin C. Conclusions: Both trabeculectomy with mitomycon C and Ahmed valve implantation can be considered as primary surgical treatments for patients with open-angle glaucoma secondary to uveitis. However, trabeculectomy with mitomycin C should only be applied to a limited extent in patients that are young and/or have diabetes mellitus. J Korean Ophthalmol Soc 2010;51(4):575-580

Ectopic cervical thymic squamous cell carcinoma misdiagnosed as thyroid cancer: a case report

김주연,정은정,Kim Jae-Myung,Lee Han Shin,박태진,정상호,Jeong Chi-Young,주영태 대한종양외과학회 2022 Korean Journal of Clinical Oncology Vol.18 No.2

Ectopic thymic neoplasm, particularly ectopic thymic carcinoma, is a rare disease that presents as a neck mass. Here, we present a case of ectopic thymic squamous carcinoma in a 65-year-old man who presented with persistent hoarseness. After fine needle aspiration cytology, the patient underwent total thyroidectomy with lymph node dissection. The final histopathological examination revealed the ectopic thymic squamous carcinoma. The patient was discharged without any postoperative complications. The patient received adjuvant radiation therapy and did not progress during the 1-year follow-up period.

Sn-CU계 다원 무연솔더의 미세구조와 납땜특성

김주연,배규식,Kim Ju-Youn,Bae Kyoo-Sik 한국재료학회 2005 한국재료학회지 Vol.15 No.9

To develope new lead-free solders with the melting temperature close to that of Sn-37Pb$(183^{\circ}C)$, Sn-0.7Cu-5Pb-1Ga, Sn-0.7Cu-5Pb-1Ag, Sn-0.7Cu-5Pb-5Bi-1Ag, and Sn-0.7Cu-SBi-1Ag alloys were composed by adding low-netting elements such as Ga, Bi, Pb, and Ag to Sn-0.7Cu. Then the melting temperatures, microstructures, wettability, and adhesion properties of these alloys were evaluated. DSC analysis showed that the melting temperature of Sn-0.7Cu-SPb-1Ga was $211^{\circ}C$, and those of other alloys was in the range of $192\~200^{\circ}C$. Microstructures of these alloys after heat-treatment at $150^{\circ}C$ for 24 hrs were basically composed of coarsely- grown $\beta-Sn$ grains, and $Cu_6Sn_5$ and $Ag_3Sn$ intermetallic precipitates. Sn-0.7Cu-5Pb-1Ga and Sn-0.7Cu-5Pb-5Bi-1Ag showed excellent wettability, while Sn-0.7Cu-5Bi-1Ag and Sn-0.7Cu-5Pb-5Bi-1Ag revealed good adhesion strength with the Cu substrates. Among 4 alloys, Sn-0.7Cu-5Pb-5Bi-1Ag with the lowest melting temperature $(192^{\circ}C)$ and relatively excellent wettability and adhesion strength was suggested to be the best candidate solder to replace Sn-37Pb.

갑상선 결절에 대한 세침흡인 세포검사에서 비진단적 검체의 특징과 치료 전략

김주연,정은정,정상호,주영태,정치영,이영준,홍순찬,최상경,하우송,박순태,Ju-Yeon Kim,Eun-Jung Jung,Sang-Ho Jeong,Young-Tae Ju,Chi-Young Jeong,Young-Joon Lee,Soon-Chan Hong,Sang-Kyeong Choi,Woo-Song Ha,and Soon-Tae Park 대한갑상선-내분비외과학회 2010 The Koreran journal of Endocrine Surgery Vol.10 No.4

테라비트급 나노 스케일 SONOS 플래시 메모리 제작 및 소자 특성 평가

김주연,김문경,김병철,김정우,서광열,Kim, Joo-Yeon,Kim, Moon-Kyung,Kim, Byung-Cheul,Kim, Jung-Woo,Seo, Kwang-Yell 한국전기전자재료학회 2007 전기전자재료학회논문지 Vol.20 No.12

To implement tera bit level non-volatile memories of low power and fast operation, proving statistical reproductivity and satisfying reliabilities at the nano-scale are a key challenge. We fabricate the charge trapping nano scaled SONOS unit memories and 64 bit flash arrays and evaluate reliability and performance of them. In case of the dielectric stack thickness of 4.5 /9.3 /6.5 nm with the channel width and length of 34 nm and 31nm respectively, the device has about 3.5 V threshold voltage shift with write voltage of $10\;{\mu}s$, 15 V and erase voltage of 10 ms, -15 V. And retention and endurance characteristics are above 10 years and $10^5$ cycle, respectively. The device with LDD(Lightly Doped Drain) process shows reduction of short channel effect and GIDL(Gate Induced Drain Leakage) current. Moreover we investigate three different types of flash memory arrays.

흰쥐에서 녹차의 섭취가 ¹⁴C-Benzo[a]pyrene의 조직 분배 및 잔류에 미치는 영향

김주연,노상규,Kim, Ju-Yeon,Noh, Sang-K. 한국식품영양과학회 2011 한국식품영양과학회지 Vol.40 No.6

잔류성이 강하고 높은 지용성질을 가지는 식품오염물질인 benzo[a]pyrene(BaP)은 녹차 섭취에 의해서 소장에서 흡수가 억제되고 총담관으로의 배출이 증가되는 것으로 최근에 보고하였다. 이번 연구는 흰쥐를 이용해서 $^{14}C$-BaP를 복강주사한 후, 사람과 비교해서 1잔에 해당하는 녹차추출물을 4주간 매일 지속적으로 공급하였을 때, $^{14}C$-BaP의 조직분배 및 잔류에 미치는 영향을 조사하였다. 27.4 kBq $^{14}C$-BaP를 복강주사한 후 표준식이와 증류수만 공급된 동물군을 대조군, 표준식이와 녹차추출물(4.7 mg catechins/day)을 공급받은 동물군을 녹차군으로 하여 4주간 사육하였다. 그리고 4주째에 심장, 간장, 뇌, 비장, 신장, 후복막지방, 고환, 부고환지방 조직을 적출하여 무게를 측정하고 각 조직에 잔류하는 $^{14}C$-BaP의 방사선 활성도를 측정하였다. 대조군과 녹차군 모두 연구 시작부터 종료 시까지 지속적으로 체중이 증가하였으나 동물군 간에 유의적인 차이는 없었다. 장기의 무게 또한 각 조직 모두 동물군 간에 유의적인 차이가 없었다. 조직 g당 $^{14}C$-BaP의 잔류량은 심장에서 가장 높았고 다음으로 뇌, 부고환지방, 비장, 신장, 간장, 후복막지방, 고환 순으로 높았으며, 조직 전체의 $^{14}C$-BaP의 잔류량은 부고환지방에서 가장 높았고 다음으로 간장, 후복막지방, 심장, 뇌, 신장, 고환, 비장 순으로 나타났다. 녹차 섭취에 의해서 조직 g당 $^{14}C$-BaP의 방사선 활성도와 조직 전체 당 $^{14}C$-BaP 방사선 활성도 모두 심장, 간장, 뇌, 비장, 부고환지방에서 급격하게 감소된 것으로 나타났다. 이상의 실험결과들을 종합해 볼 때, 4주 동안 하루 1잔에 해당하는 녹차추출물 섭취가 BaP의 조직 분배를 유의적으로 감소시켜 조직 잔류에 영향을 미치는 것을 이 실험을 통해서 확인할 수 있었다. Recently, we showed that green tea extract (GTE) markedly lowers the intestinal absorption of $^{14}C$-benzo[a]pyrene ($^{14}C$-BaP) and enhances its secretion into the biliary route, suggesting a protective role for GTE against body burden. These findings indicate that green tea could be used as an effective dietary means against the toxicity of BaP. The present study, therefore, was designed to investigate if green tea intake could affect the tissue distribution and deposition of $^{14}C$-BaP in rats. Male Sprague-Dawley rats had free access to a nutritionally adequate AIN-93G diet and deionized water. At ~340 g of weight, the rats were injected intraperitoneally with 27.4 kBq of [4-$^{14}C$]-BaP and 5.0 mg of BaP dissolved in $300\;{\mu}L$ of olive oil and then assigned randomly to the following two groups: one group (GTE) of rats was fed the AIN-93G diet with GTE via drinking water at approx. 4.7 mg of catechins/d, whereas the other was fed the same diet but without GTE (control). At 4 wk of dietary treatment with GTE, animals were euthanized and heart, liver, brain, spleen, kidney, retroperitoneal fat, testis, and epididymal fat were collected, weighed, and analyzed for tissue $^{14}C$-BaP. Both the control and GTE groups continuously gained weight throughout the study, but there was no significant difference between the groups. No significant differences were observed in the weights of heart, liver, brain, spleen, kidney, retroperitoneal fat, testis, and epididymal fat. However, the radioactivities of $^{14}C$-BaP, expressed in dpm/g, were significantly lower in the heart, liver, brain, spleen, and epididymal fat of rats receiving GTE as compared to their respective controls. These data indicate that green tea intake markedly lowers tissue accumulation of $^{14}C$-BaP. Taken together, these findings suggest that the decreased tissue levels of BaP by GTE intake may be associated with lowered intestinal absorption of BaP and its enhanced secretion into the bile.

대학생 개인정보보호 인식조사를 통한 교육 개선방안 연구

김주연,Kim, Ju-yeon 한국정보통신학회 2019 한국정보통신학회논문지 Vol.23 No.3

개인정보의 수집과 사용이 지속적으로 증가하고 있는 추세에서, 개인정보를 보호하기 위한 법적 근거가 마련되고 각종 정책과 제도가 시행되고 있지만, 개인정보보호에 관한 교육과 그 효과에 대한 분석이 부족한 상황이다. 이에 본 연구에서는 대학생들의 개인정보보호에 인식정도와 실제 인지수준에 대해 분석하고, 개인정보보호 교육의 만족도를 조사하였다. 분석결과에서 학생들의 개인정보보호에 대한 관심이나 개인정보 노출 염려는 매우 높은 편이었으나, 실제 개인정보보호를 위한 노력이나 개인정보보호를 위한 권리 및 제도에 대한 인지수준은 매우 낮은 것으로 분석되었다. 또한 정보보호 교육을 받은 경험 및 만족도도 매우 낮은 것으로 조사되었다. 학생들은 개인정보보호 교육의 필요성은 크게 공감하였고, 일회성 교육보다는 정기적이고 지속적인 교육을 선호하는 것으로 분석되었다. In the trend of continuously increasing collection and use of personal information, there are legal grounds for protecting personal information and various policies and systems are implemented, but there is insufficient analysis about education and its effect of personal information protection. In this study, we surveyed and analyzed the degree of awareness and actual perception level in the protection of personal information of college students, and investigated the satisfaction of personal information protection education. The results of the analysis showed that students' interest in privacy protection and concern about personal information exposure was very high, but the efforts to protect personal information and the perception level of rights and systems for protecting personal information was very low. In addition, the experience and satisfaction of education for personal information protection were found to be very low. Students felt that the necessity of education for personal information protection was strongly agreed and preferred regular and continuous education rather than one-time education.