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나선형 인덕터의 디임베드 검증을 통한 CMOS LNA 설계 및 제작
李?瑩(Han-Young Lee),劉英吉(Young-Kil Yoo) 대한전기학회 2008 전기학회논문지 Vol.57 No.12
This paper examined the simulation results after applying not only spiral inductor's 3D EM simulation but also de-embedding technique to reduce the pad's RF effects. When calculating standard deviation with measurement results not only the gain at 0.5㎓~4㎓ but also noise figure at 1.8㎓~4㎓, the simulation results includes de-embedded inductor model improved gain deviation by 0.171 and noise figure deviation by 0.151 than the results from simulation with foundry inductor equivalent circuit models.
3-D field 해석을 통한 온칩 나선형 인덕터 제작
李?瑩(Han-Young Lee),李雨哲(Woo-Cheol Lee) 대한전기학회 2007 전기학회논문지 Vol.56 No.11
In this paper, we verified basic forms and equivalent circuits of spiral inductors and various kinds of parasitics of equivalent circuits by using HFSS and Nexxim program that were 3-D EM analysis tools, and fabrication on-chip spiral inductors using Hynix's 0.25㎛ 1-poly and 5-metal CMOS process. Comparing with PGS(patterned ground shield) and NPGS(non patterned ground shield) of spiral inductors of 3.5 turn, 4.5 turn and 5.5 turn, etc, the application of PGS could improve maximum Q value by 8-12%.
박천규(Chun-gyu Park),이 영(Young Lee) 한국주택학회 2010 주택연구 Vol.18 No.1
이 연구의 목적은 신혼부부의 자녀출산과 주택소비와의 관계를 분석하는 것이다. 즉 결혼 후 3년 이내 자녀출산이 상대적으로 주택소비량을 줄이거나 내 집 마련을 제약하는 효과가 있는지를 분석하고자 한다. 첫째, 신혼부부 자녀출산과 주택점유형태 선택과의 관계를 분석하였다. 분석 결과 결혼 후 3년 이내의 자녀 출산은 자가선택확률을 감소시키는 효과가 있는 것으로 나타났다. 둘째, 결혼 후 3년 이내의 출산이 최초 구입 주택소비에 미치는 영향을 실증분석하였다. 결혼 후 3년이내 자녀 출산은 최초 구입 주택소비를 줄이는 것으로 나타났다. 즉 결혼 후 3년 이내 출산은 약 5.3% 주택소비를 줄이는 효과가 있다. 셋째, 결혼 후 3년 이내 출산이 현재의 주택소비와 어떠한 관계가 있는지를 분석하였다. 결혼 후 3년 이내 출산은 현재 자가주택면적을 약 4.2%, 차가주택면적을 4.5% 작아지게 하는 효과가 있는 것으로 분석되었다. 분석 결과에서 보는 것과 같이 결혼 후 3년 이내의 출산은 주택소비를 감소시키는 영향을 주는 것으로 나타났다. 또한 신혼부부가 일찍 자녀를 출산하는 경우 이는 자가선택확률을 감소시키는 것으로 나타났다. 이는 정부가 시행 중인 신혼부부 특별 주택공급프로그램의 주 정책대상인 결혼 후 3년 이내 출산 신혼부부의 주택소비가 3년 이내 출산 이외 여타 조건이 같다면 다른 가구에 비해 불리한 상황에 있다는 것을 의미한다. The study aims to analyze the effects of the newly married couples' childbearing on the housing consumption. In other words, we analyze the effects of the childbearing between 3 years after the marriage on the housing consumption. The married couples who have given birth between 3 years after their marriages are an important policy target group to whom the government primarily provides the housing. The main results of the study are the following: First, we analyzed the effects of newly married couples' childbearing on the owneroccupation. The probit estimates for analyzing the effect of the childbearing between 3 years after the marriage on the probability of owner-occupation indicate that households who became parents between 3 years after their marriages are less likely to become homeowners. Second, the effects of the newly married couples' childbearing on the first housing consumption after their marriages were analyzed. The childbearing between 3 years after the marriage reduces the first housing consumption by 5.3%. Third, we empirically analyzed the effects of newly married couples' childbearing on the current housing consumption. The childbearing between 3 years after the marriage reduces the current housing consumption of the homeowner by 4.2% and reduces the current housing consumption of the tenant by 4.5%.
이 시 진(Si-Jin Lee),이 은 영(Eun-Young Lee,이 혜 진(Hey-Jin Lee) 대구보건대학 2008 대구보건대학 論文集 Vol.28 No.-
The study which shows sith theoretical data presented the client schedule of facility about Long-term Care insurance of Japan. And the process of service and the part of facility showed with the photograph. On the other side, the contents which executes from facility of Korea introduced. Also the founndation goal of korean facility and key note of Long-Term Care of Japan presented. Like this things leads, the study is will smoothly contribute for the settlement which the Long-Term Care Insurance System is enforced from Korea. The worker which does a best safely from day-service of Japan leads the service of direction adout Long-Term Care of korea. That becomes the big help. Finally, in camparison with Long-Term Care Insurance Korea and Japan, inorder to develop Long-Term Care System of Korea honestly, the study desires the central operating body does the fundamental self-govening body and National Health Insurance Corporation Supports with the setup.
김형래 ( Hyeong Rae Kim ),임은화 ( Eun Wha Lim ),이 영 ( Young Lee ),서영준 ( Young Joon Seo ),이증훈 ( Jeung Hoon Lee ),임 명 ( Myung Im ) 대한피부과학회 2014 大韓皮膚科學會誌 Vol.52 No.1
Aseptic subcutaneous abscesses are characterized by deep, round lesions histologically consisting of neutrophils, without evidence of microorganisms on culture. Although these are sometimes reported in healthy individuals, most are reported in patients with inflammatory bowel disease, including Crohn's disease and ulcerative colitis. A 79-year-old man without underlying disease presented with multiple skin-colored nodules and masses on his face and extremities 4 years ago. All of the microbiology studies for bacteria and fungi were negative and he did not respond to antibiotics. However, the lesions improved markedly after systemic prednisolone treatment. We diagnosed his lesions as aseptic subcutaneous abscesses. Further studies to evaluate inflammatory bowel disease were negative. Here, we report a case of multiple aseptic subcutaneous abscesses without an underlying disease. (Korean J Dermatol 2014;52(1):44∼47)
이 덕 영 대구대학교 산업기술연구소 2009 産業技術硏究 Vol.20 No.1
To get the natural frequencies of an automobile turbocharger wheel, impact hammer and accelerometer are usually used. But an impact hammer must be handled carefully to avoid double hit and an accelerometer chosen as light as possible not to add weight on the turbocharger. In this paper, a new vibration test method using steel ball and microphone are suggested to get the natural frequencies of the turbocharger. The steel ball can hit the turbine wheel into arbitrary directions avoiding double hit and a microphone is free of weight increase problem. Another advantage is that the system can be cheaply set up because Adobe Audition is used for signal analyzer. So it is looking forward to adopt this system easily in automotive parts industries.