기후변화로 인한 고온의 미래 사망부담 추정

양지훈,하종식,Yang, Jihoon,Ha, Jongsik 한국환경보건학회 2013 한국환경보건학회지 Vol.39 No.1

Objectives: Elevated temperatures during summer months have been reported since the early 20th century to be associated with increased daily mortality. However, future death impacts of high temperatures resulting from climate change could be variously estimated in consideration of the future changes in historical temperature-mortality relationships, mortality, and population. This study examined the future death burden of high temperatures resulting from climate change in Seoul over the period of 2001-2040. Methods: We calculated yearly death burden attributable to high temperatures stemming from climate change in Seoul from 2001-2040. These future death burdens from high temperature were computed by multiplying relative risk, temperature, mortality, and population at any future point. To incorporate adaptation, we assumed future changes in temperature-mortality relationships (i.e. threshold temperatures and slopes), which were estimated as short-term temperature effects using a Poisson regression model. Results: The results show that climate change will lead to a substantial increase in summer high temperature-related death burden in the future, even considering adaptation by the population group. The yearly death burden attributable to elevated temperatures ranged from approximately 0.7 deaths per 100,000 people in 2001-2010 to about 1.5 deaths per 100,000 people in Seoul in 2036-2040. Conclusions: This study suggests that adaptation strategies and communication regarding future health risks stemming from climate change are necessary for the public and for the political leadership of South Korea.

지중 환경의 정의에 대한 정책적 고찰

양지훈,유근제,황상일,Yang, Jihoon,Yoo, Keunje,Hwang, Sang Il 한국지하수토양환경학회 2016 지하수토양환경 Vol.21 No.1

Many improper development action were performed at subsurface environment, because there were not any definition about subsurface environment in Korea. The purpose of this study was to establich a definition on subsurface environment. Subsurface environment could be divided by subsurface natural environment and subsurface living environment. The soil, groundwater, ecosystems, landscapes, underground space (naturally occurred) were included in subsurface natural environment. And space and facilities used by human were classified as subsurface living environment.

지중환경관리 법제도에 대한 고찰

양지훈,유근제,황상일,Yang, Jihoon,Yoo, Keunje,Hwang, Sang Il 한국지하수토양환경학회 2016 지하수토양환경 Vol.21 No.1

Many legislations have been implemented in order to manage the subsurface environment in Korea. However, there was no control tools for managing subsurface environment so effectively. In this study, many laws and regulations were analyzed for extracting Korean subsurface environment management plan. Korean government need to 1) establish the basic paradigm for building the subsurface space, 2) establish the clear subsurface environment management systems, 3) establish the regulations related with subsurface space compensation, 4) prepare the human health and ecosystem related legislations.

LQ-PID 제어기 동조-시간영역에서의 접근

양지훈,서병설,Yang Ji Hoon,Suh Byung Suhl 대한전자공학회 2004 電子工學會論文誌-SC (System and control) Vol.41 No.1

This paper proposes an optimal robust LQ-PID controller design method for the second order systems to satisfy the design specifications in time domain. The tuning parameters of LQ-PID controller are determinated by the relationships between the design parameters of the overshoot and the settling time which are design specifications in time domain, and the weighting factors Q and R in LQR. we can achieve the performance-robustness in time domain as well as the stability-robustness. 본 논문은 2차 시스템에서 시간영역의 설계 사양을 만족하는 최적 강인 LQ-PID 제어기 설계방법을 제안한다. LQ-PID제어기 동조파라미터들은 시간영역의 설계사양인 오버슈트와 정착시간의 설계파라미터들과 LQR의 가중치요소 Q와 R의 관계에 의해서 설계될 수 있었다. 그래서 안정도-강인성뿐만 아니라 시간영역에서의 성능-강인성을 이룰 수 있었다.

냉간압연가공에 따른 Al-5.5Mg-2.9Si계와 Al-7Mg-0.9Zn계 합금의 압연가공성 및 기계적 특성 차이

양지훈,이성희,Yang, Ji-Hun,Lee, Seong-Hee 한국재료학회 2016 한국재료학회지 Vol.26 No.11

The cold rolling workability and mechanical properties of two new alloys, designed and cast Al-5.5Mg-2.9Si and Al-7Mg-0.9Zn alloys, were investigated in detail. The two alloy sheets of 4 mm thickness, 30 mm width and 100 mm length were reduced to a thickness of 1 mm by multi-pass rolling at ambient temperature. The rolling workability was better for the Al-7Mg-0.9Zn alloy than for the Al-5.5Mg-2.9Si alloy; in case of the former alloy, edge cracks began to occur at 50% rolling reduction, and their number and length increased with rolling reduction; however, in the latter alloy, the sheets did not have any cracks even at higher rolling reduction. The mechanical properties of tensile strength and elongation were also better in the Al-7Mg-0.9Zn alloy than in Al-5.5Mg-2.9Si alloy. Work hardening ability after cold rolling was also higher in the Al-7Mg-0.9Zn alloy than in the Al-5.5Mg-2.9Si alloy. At the same time, the texture development was very similar for both alloys; typical rolling texture developed in both alloys. These differences in the two alloys can primarily be explained by the existence of precipitates of $Mg_2Si$. It is concluded that the Al-7Mg-0.9Zn alloy is better than the Al-5.5Mg-2.9Si alloy in terms of mechanical properties.

콤비네이션 컨버터 모드를 이용한 고효율 태양광 충전기

양지훈(Ji-Hoon Yang),이상훈(Sang-Hun Lee),홍정표(Yeng-Pyo Hong),송현직(Hyun-Jig Song),박성준(Sung-Jun Park) 전력전자학회 2014 전력전자학술대회 논문집 Vol.2014 No.7

보험수익자 변경의 의사표시가 상대방 없는 단독행위인지 여부에 대한 법적 검토

양지훈(Yang Ji hoon) 계명대학교 사회과학연구소 2020 한국사회과학연구 Vol.39 No.3

혁신적 기술 발달은 인간 평균수명을 획기적으로 증가시켰고, 사회를 더욱 복잡하게 변화시키고 있으며, 예측하기 어려운 위험을 증가시키고 있다. 이러한 위험으로부터 경제적 안정을 담보하기 위한 제도인 보험의 수요와 중요성은 꾸준히 증가하고 있고, 특히 타인의 생명을 보험사고로 하는 타인을 위한 생명보험 계약에서 분쟁이 지속적으로 발생하고 있다. 타인을 위한 생명보험이 다른 보험계약과 다른 점은 보험수익자가 존재한다는 것이다. 당연하게도 보험사고 발생 시 보험금을 수령 할 보험수익자 (변경)지정이 중요한데, 현행 상법은 보험계약자가 보험수익자를 지정 또는 변경하는 데 필요한 요건을 따로 규정하고 있지 않고, 형성권으로써 단지 보험계약자가 변경 의사표시를 한 것으로 보험수익자 지위가 변경된 것으로 보고 있다. 물론 보험수익자 변경사실을 보험자에게 통지하여야 하지만, 이는 대항요건으로 통지 시기는 그리 중요하지 않다. 이러한 이유로 진정한 보험수익자가 누구인지에 대한 분쟁이 있는 것이다. 최근 선고된 ‘대법원 2020.2.27.선고 2019다204869 판결’에서도 1심은 보험수익자 변경 의사표시가 상대방 있는 의사표시로 보았으나, 2심과 법원은 상대방 없는 의사표시로 보는 등 보험수익자 변경 의사표시에 대한 견해가 상반되기도 하였다. 본고에서는 보험수익자 변경 의사표시의 성질을 살펴보고, 이에 따른 효력 발생시점 검토를 진행하였다. 이를 통해 보험수익자 변경의 의사표시를 상대방 있는 행위로 변경하여 보험계약자의 보험수익자 변경의 의사표시가 보험자에게 도달한 시점부터 비로소 변경의 효력이 나타나는 것으로 보는 것이 계약의 원칙에 부합하고 계약의 또 다른 당사자인 보험자 보호, 불안정한 보험수익자의 지위를 조금이나마 보장할 수 있는 방안이 될 것이며, 이를 위해 상법 등 관련 법령과 약관을 개정할 필요가 있어 보인다. Innovative technological advances have dramatically increased human life expectancy, making society more complex, and increasing unpredictable risks. The demand and importance of insurance, a system to ensure economic stability from these risks, is steadily increasing, and disputes continue to arise, especially in life insurance contracts for others whose lives are insurance accidents. What makes life insurance for others different from other insurance contracts is that there is an insurance beneficiary. Naturally, it is important to designate an insurance beneficiary (change) to receive insurance money in the event of an insurance accident, and the current commercial law does not separately prescribe the requirements for the policyholder to designate or change the policyholder, but merely because the policyholder expressed its intention to change. Of course, the insurer should be notified of the change in the beneficiary, but this is a counter-requisite and the timing of the notification is not very important. For this reason, there is a dispute over who the true insurance beneficiary is. In the recently sentenced Supreme Court 2020.2.27. Sentencing 2019da 204869, the first trial saw insurance beneficiary change expression as a representation of the other party, but the second trial and the Supreme Court saw it as a representation of the other party"s intention to change insurance beneficiary. This treasury examined the nature of the indication of intention to change the beneficiary of insurance and reviewed the time of effectiveness accordingly was reviewed. It is deemed necessary to change the expression of the beneficiary"s intention to the other party"s actions, but to minimize the inherent infringement of the policyholder"s rights, it is necessary to seek the safety and swiftness of the insurance transaction and to have a contract.

마이크로 그리드용 원격 전력계측기 개발

양지훈(Ji-Hoon Yang),이정환(Jung-Hwan Lee),레동부(Tuan-Vu Le),홍성문(Sung-Mun Hong),박성미(Seong-Mi Park),박성준(Sung-Jun Park) 전력전자학회 2017 전력전자학술대회 논문집 Vol.2017 No.7

절연체(CeO₂ / Si)위에 성장된 실리콘 박막의 특성 연구

양지훈(Ji Hoon Yang),문병식(Byung-Sik Moon),김관표(Kwan Pyo Kim),김종걸(Chong Geol Kim),정동근(Donggeun Jung),노용한(Yonghan Roh),박종윤(Chong-Yun Park) 한국진공학회(ASCT) 1999 Applied Science and Convergence Technology Vol.8 No.3(2)

CeO₂/Si 표면에 실리콘의 성장 과정을 연구했다. 실리콘 박막은 전자빔 증착 방법을 사용해 증착되었다. CeO₂ (111) 박막은 700℃의 증착 온도, 5×10^(-5) Torr의 산소 부분압에서 (111)방향의 실리콘웨이퍼 위에 적층 성장하였다. CeO₂/Si위의 실리콘 박막의 적층 성장 조건을 조사하기 위해 여러 온도에서 실리콘을 증착했다. 상부 실리콘은 x-ray diffraction(XRD), double crystal x-ray diffraction(DCXRD), 그리고 transmission electron microscopy(TEM)으로 분석하였다. 690℃보다 높은 증착 온도에서는 CeO₂에서 해리된 산소와 실리콘이 화학적 반응을 일으켜 Si/CeO₂의 계면에서 SiO₂층이 성장하는 것을 관찰했다. 620℃에서 CeO₂/Si 표면에 실리콘을 증착 했을 때 실리콘 박막이 (111)방향을 따라 적층 성장하였다. We have investigated the growing process of a silicon film on the CeO₂/Si surface. The silicon was deposited by using electron beam deposition method. The CeO₂ (111) film was grown on a (111)-oriented silicon substrate at 700℃ at oxygen partial pressure of 5×10^(-5) Torr. To investigate the condition of epitaxial growth of Si films on the CeO₂/Si substrate, we deposited Si at various temperatures. The overlayer silicon was characterized by using x-ray diffraction (XRD), double crystal x-ray diffraction (DCXRD), and transmission electron microscopy (TEM). At temperature higher than 690℃, SiO₂ layer was observed at the Si/CeO₂ interface, which was formed by chemical reaction with silicon and oxygen dissociated from CeO₂. When silicon was deposited on the CeO₂/Si at 620℃, silicon grew epitaxially along the (111)-direction.

환경영향평가 시 토양 관련 평가 항목에 대한 고찰

양지훈 ( Jihoon Yang ),박선환 ( Sun Hwan Park ),김태흠 ( Tae Heum Kim ),황상일 ( Sang Il Hwang ) 한국환경영향평가학회 2016 환경영향평가 Vol.25 No.1

Environmental impact assessment has been implemented for more than 30 years in Korea. During that period, various amendments were carried out about target plan and assessment factors. However, in current environmental impact assessment act, only a few factors has been considered for soil environment assessment. This study analyzes the national and foreign environmental impact assessment guidelines on soil related factors and figures out the problems and implications of Korean environmental impact assessment. In Korea, water quality, topography and geology, hydraulics and hydrology, and soil contamination were analyzed as a soil related factors. The main assessment targets were pollution related factors such as soil pollution levels, amount of rainfall runoff, and non-point sources. However, in the case of foreign guidelines, soil compaction, soil sealing, and soil salinization is being analyzed for evaluating function and quality of soil environment. The revision of soil-related factors are needed for sustainable development of Korea.