http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김재이,고영권,전숙희 東新大學校 1999 論文集 Vol.11 No.-
In this paper, various emission patterns of vacuum cleaners were investigated. The typical models of each marker were selected in the study. The frequency and included voltage of EMI(electromagnetic interference) from each vacuum cleaners were measured by using electromagnetic receptor. As the result, we were found that the vertical deflection frequency and induced voltage is about 1~8[㎒] and 6~20[㏈㎶] respectively.
새만금 간척지에서 토양특성별 제염 및 재염화특성에 관한 연구
송재도 ( Jae Do Song ),손재권 ( Jae Gwon Son ),최진규 ( Jin Kyu Choi ),장태일 ( Tae Il Jang ),조재영 ( Jae Young Cho ),한평희 ( Pyeong Hee Han ),우혜진 ( Hye Jin Woo ) 한국농공학회 2014 한국농공학회 학술대회초록집 Vol.2014 No.-
새만금 간척사업은 1991년 11월 방조제공사가 착공되었으며, 2006년 4월 방조제 끝물막이 공사로 그 모습이 드러나게 되었다(농어촌공사, 2000). 본 사업을 통해 간척 토지 면적 28,300 ha와 담수호 면적 11,800 ha를 조성하여 전체 개발면적 40,100 ha를 계획하고 있다(농어촌공사, 1998). 새만금 간척지중 농업용지에 대한 내부개발 공사는 새만금 첨단농업시험단지, 농어업회사 부지 등이 포함된 농업용지 5공구를 대상으로 이루어지고 있는 상황이다. 그러나, 간척지 내부개발공사가 완료된 이후 본격적인 영농작업을 실시할 경우 간척지 토양 내 함유된 염분에 대한 종합적인 관리대책이 필요할 것으로 여겨진다. 이에 본 연구에서는 현재 공사가 진행중에 있는 새만금 농업용지5공구지역의 대표적인 토양이라 할 수 있는 미사질양토, 사양토, 양질사토 토양을 대상으로 제염 및 재염화에 대한 라이시미터시험을 실시하였다. 초기 제염시 미사질양토 토양은 지속적인 용수를 공급하였음에도 불구하고 토양침출이 이루어지지 않고 있었으나, 사양토와 양질사토 토양에서는 초기 전기전도도(EC)가 각각 6.9dS/m, 9.3dS/m였다가 초기 제염용수 300mm공급시 토양심도 60cm까지 2dS/m수준으로 제염이 이루어지고 있었다. 또한, 초기 제염이후 무관개, 간단관개, 상시관개 등 관개방식을 달리하여 적용한 결과 무관개시에는 사양토, 미사질양토, 양질사토 순으로 토양염분 상승이 이루어졌고, 간단관개나 상시관개에서는 재염화에 대한 방지효과가 있었다. 따라서, 향후 새만금 간척지에서 작물재배시에는 작물생육특성과 더불어 간척지 토양특성을 감안하여 제염방식이나 관개방식 적용이 필요할 것으로 판단된다.
학술 논문 : 차량 개발 단계의 친환경설계 프로세스에 대한 연구
권재수 ( Jae Soo Gwon ),이준하 ( Joon Ha Lee ),홍성준 ( Sung Joon Hong ),조희욱 ( Hee Wook Cho ),홍병권 ( Byoeng Kwon Hong ),홍존희 ( John Hee Hong ) 한국전과정평가학회 2011 한국전과정평가학회지 Vol.12 No.1
Recently the environmental regulations require automobile makers not only to set up the open loop resource recycling system by promoting the material recycling and remanufacturing in disposal phase, hut also to apply Eco-design to their products in design phase. Hyundai Motor Group applies DfD(Design for Disassembly) and DfR(Design for Recycling) from conceptual design stage to production stage with the aspect of concurrent engineering. Eco-design guideline helps engineering designers to understand the necessity of Eco-design. The recyclability check sheets that include detailed design ideas classified by the polymer parts enable each designer to verify the product design by oneself. Furthermore, virtual recyclability inspection is performed in the digital product inspection stage which handles the virtual 3D modeling of products. All these activities became the official procedure in product development process. The DOROSY(Design fOr Recycling Optimizing SYstem) which is developed to help designers evaluate and modify their 3D design to generate the redesign alternatives and finally analyze the effect of environmental design change within a short time. Because DOROSY is based in CATIA which is familiar to engineering designers using the parametric designed template, engineering designer can apply the Eco-friendly idea to product design efficiently.
Oh, Gyung-Jae,Moon, Jiyoung,Lee, Yu-Mi,Park, Hyeung-Keun,Park, Ki Soo,Yun, Yong-Woon,Kang, Gilwon,Kim, Byoung-Gwon,Seo, Jae-Hee,Lee, Heeyoung,Lee, Won Kyung,Lee, Kun Sei,Kim, Hee-Sook,Lee, Young-Hoon The Korean Academy of Medical Sciences 2016 JOURNAL OF KOREAN MEDICAL SCIENCE Vol.31 No.11
<P>The aim of this study was to investigate time trends in the public awareness of stroke and its predicting factors. The target population was 9,600 community-dwelling adults, aged 19–79 years, in 16 metropolitan cities and provinces in Korea. The survey samples in 2012 and 2014 were selected separately (entirely different sets of subjects) using a proportionate quota sampling method. Information concerning knowledge of stroke and demographics was collected by trained telephone interviewers using random digit dialing. After excluding subjects with a non-response or refusal to answer any question, the analyses included 8,191 subjects in 2012 and 8,127 subjects in 2014. Respondents’ awareness of stroke warning signs (numbness or weakness, difficulty speaking or understanding speech, dizziness, visual impairment, and severe headache) was highest for difficulty speaking or understanding speech (80.9% in 2012 and 86.4% in 2014). There were significant increases in the proportion of respondents understanding the appropriate action (i.e., calling an ambulance) at the time of stroke occurrence (59.6% to 67.1%), and in the proportion aware of the general need for prompt treatment (86.7% to 89.8%). In multivariable logistic regression analysis, older age, higher education level, higher household income, current non-smoking, exposure to stroke-related public relations materials, and experience of stroke education were significantly associated with both high knowledge of stroke warning signs and awareness of the need for prompt treatment. Between 2012 and 2014, the public’s awareness of stroke increased significantly. More specialized interventions, including public relations materials and education, should focus on subgroups who have lower stroke knowledge.</P>
간척지의 토지이용 현상과 문제점 파악 및 발전방향 - 충남, 전북, 전남 지역 지자체 및 한국농어촌공사 지사 대상 설문조사 -
손재권 ( Son Jae-gwon ),정찬희 ( Jeong Chan-hee ),이동호 ( Lee Dong-ho ),고승환 ( Go Seung-hwan ),송재도 ( Song Jae-do ),이기성 ( Lee Gi-sung ),박종화 ( Park Jong-hwa ) 한국농촌계획학회 2020 농촌계획 Vol.26 No.3
The purpose of this study was to determine the problems of reclamation sites and the prospects of farming in reclamation areas seen by local governments and the KRC branches in Chungnam, Jeonbuk, and Jeonnam provinces. A mail survey method was used. The survey items were set for 15 items regarding the reclamation site situation, problems, and prospects. Seventy-five copies of the questionnaire were distributed to the local government, and 90 copies were sent to the KRC 165 copies in total. In response to the questionnaire, 72 recipients of the local governments responded, showing a 96% response rate, and 74 (82.2%) of the KRC responded. The overall response rate was 88.5%. The opinions on the rental method of the reclaimed land were found to differ according to the geographic conditions of the reclaimed land, the construction conditions, and the time. Regarding the survey on crops preferred for cultivation, rice was highest in both local governments (61%) and KRC (46%). When cultivating field crops in reclaimed land, 56% of local governments and 57% of KRC considered salinity a s t he most problematic or resolvable problem. Regarding growing other field crops in reclaimed land, salt and drainage problems were recognized as the biggest obstacles in all reclaimed land. As for technologies that need to be applied first for the future agriculture of reclamation land, KRC responded with automatic water management (48%) and local governments responded with unmanned agricultural machinery (32%). In order to diversify the land use in the reclamation area, it is necessary to reduce salt damage and ensure systematic maintenance, employing, for example, automatic water management facilities and drainage improvement methods. The results of this study can set a land use direction for reclamation sites and provide useful information for use in various forms.
Jae-Hak Choi,Sung-Jin Gwon,Joon-Yong Shon,Chan-Hee Jung,Young-Eon Ihm,Youn-Mook Lim,Young-Chang Nho 한국공업화학회 2008 Journal of Industrial and Engineering Chemistry Vol.14 No.1
Polystyrene-grafted poly(vinylidene fluoride) (PVDF-g-PS) membranes were prepared by simultaneous g-irradiation-induced graft polymerization. The morphological changes of the prepared membranes were investigated by scanning electron microscopy. The degree of grafting (DOG) increased with increasing absorption doses. The degree of crystallinity upon grafting was found to decrease due to the formation of amorphous polystyrene layer. The grafted membranes showed better electrolyte uptake and retention ability compared to the ungrafted membrane. The ionic conductivity of the membrane with LiClO4/g-butyrolactone-based electrolyte increased with the increase in the DOG and reached 2.50 mS/cm for the highest sample. # 2007 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
Jae Sung Shin,Ki-Hee Song,Gwon Lim,Seong Y. Oh 한국방사성폐기물학회 2023 한국방사성폐기물학회 학술논문요약집 Vol.21 No.1
Laser cutting has many advantages, including high-speed cutting potential, no reaction forces, narrow kerf widths, ease of remote control, and more. This makes it the next generation cutting technology for nuclear decommissioning. For this reason, various groups in countries with nuclear power plants have been working on applying laser cutting to nuclear decommissioning. Our group has also been developing in-air and underwater laser cutting technologies. Previous research has focused on efficiently cutting thicker steels. To accomplish this, a cutting head with a long focusing element with a focal length of 600 mm was utilized. A long focusing head is advantageous for cutting thick objects at high speeds because it can maintain a high power density over a long distance. However, with such a long focused beam, the residual laser power that remains after passing through the target object can cut or damage other unwanted objects located behind the target. Utilizing a short focused element can solve this problem, but if the focal length is too short, the cutting capability will be reduced. In this work, we developed and applied a cutting head that utilizes a focused element with a short focal length of 300 mm. Cutting tests with this head allowed us to cut 10-60 mm thick stainless steel plates at a laser power of 6 kW. We also obtained the maximum cutting speed and kerf width for each thickness while increasing the laser power by 1 kW from 1 to 6 kW. The results obtained in this work are expected to be utilized for safe cutting in future nuclear decommissioning applications.