초소형 비행체에서 리블렛을 이용한 표면마찰항력 감소에 관한 연구

황성민,정진택 한국항공우주학회 2004 한국항공우주학회 학술발표회 논문집 Vol.- No.-

다리에 발생한 습진모양 잠행백선

황성민,서무규,김동민,하경임,김정란 대한의진균학회 2011 대한의진균학회지 Vol.16 No.2

Tinea incognito is the dermatophytosis of atypical clinical presentation that induced by topical and systemic corticosteroid treatment or new class of topical non-steroidal agent such as tacrolimus or pimecrolimus. We report a case of eczema-like tinea incognito in a 15-year-old girl. The lesions were manifested by pruritic to tender, scaly well-demarcated erythematous macules and patches with pustules on the lateral side of right shin. She had been treated with topical corticosteroid and pimecrolimus for 6months. Direct microscopic examination of the lesion was positive for hyphae and fungal culture revealed colonies of Trichophyton(T.) rubrum. Histopathologic examination of the skin lesion showed mild perivascular inflammation with presence of fungal hyphae in the horney layer of the epidermis. The patient was treated with 250 mg of terbinafine daily for 1 month and topical lanoconazole application. Skin lesions improved one month after the treatment, and no recurrence was observed.

오이 뿌리혹선충병에 대한 효율적인 저항성 검정법 확립

황성민,최경자,장경수,최용호,김진철 한국식물병리학회 2014 식물병연구 Vol.20 No.2

Root-knot nematodes represent a significant problem in cucumber, causing reduction in yield and quality. To develop screening methods for resistance of cucumber to root-knot nematode Meloidogyne incognita, development of root-knot nematode of four cucumber cultivars (‘Dragonsamchuk’, ‘Asiastrike’, ‘Nebakja’ and ‘Hanelbakdadaki’) according to several conditions such as inoculum concentration, plant growth stage and transplanting period was investigated by the number of galls and egg masses produced in each seedling 45 days after inoculation. There was no difference in galls and egg masses according to the tested condition except for inoculum concentration. Reproduction of the nematode on all the tested cultivars according to inoculum concentration increased in a dose-dependent manner. On the basis of the result, the optimum conditions for root-knot development on the cultivars is to transplant period of 1 week, inoculum concentration of 5,000 eggs/plant and plant growth stage of 3-week-old in a greenhouse (25 ± 5°C). In addition, under optimum conditions, resistance of 45 commercial cucumber cultivars was evaluated. One rootstock cultivar, Union was moderately resistant to the root-knot nematode. However, no significant difference was in the resistance of the others cultivar. According to the result, we suggest an efficient screening method for new resistant cucumber to the root-knot nematode, M. incognita.

Si1-xGex Positive Feedback Field-effect Transistor with Steep Subthreshold Swing for Low-voltage Operation

황성민,김형진,권대웅,이종호,박병국 대한전자공학회 2017 Journal of semiconductor technology and science Vol.17 No.2

The most prominent challenge for MOSFET scaling is to reduce power consumption; however, the supply voltage (VDD) cannot be scaled down because of the carrier injection mechanism. To overcome this limit, a new type of field-effect transistor using positive feedback as a carrier injection mechanism (FBFET) has been proposed. In this study we have investigated the electrical characteristics of a Si1-xGex FBFET with one gate and one-sided Si3N4 spacer using TCAD simulations. To reduce the drain bias dependency, Si1-xGex was introduced as a low-bandgap material, and the minimum subthreshold swing was obtained as 2.87 mV/dec. This result suggests that a Si1-xGe¬x FBFET is a promising candidate for future low-power devices.

고추 풋마름병에 대한 효율적인 저항성 검정법 확립

황성민,장경수,최용호,김헌,최경자 한국식물병리학회 2017 식물병연구 Vol.23 No.4

Bacterial wilt caused by Ralstonia solanacearum is an important disease in cultivation of chili pepper, causing plant death and significant yield losses. Cultivation of disease-resistant varieties is the most suitable measure to control bacterial wilt of chili pepper. To establish an efficient screening method for resistant chili pepper to R. solanacearum, six resistant or susceptible cultivars to the R. solanacearum were selected and the development of bacterial wilt on the cultivars according to several conditions was investigated. Drenching bacterial suspension into the cut roots using a scalpel was more simple and effective to distinguish resistant and susceptible cultivars than inoculation methods of root-dipping or soil-drenching without wounding. A resistant pepper, ’MC4’ to R. solanacearum showed high resistance under the developed conditions which were 21- to 28-day-old pepper inoculated with 1×108 cfu/ml of bacterial suspension. On the other hands, the susceptible cultivars represented high disease severity under the conditions. These results indicated that we developed an efficient method to evaluate resistance of chili pepper cultivars against bacterial wilt. In addition, we successfully evaluated resistance degree of 140 commercial chili pepper cultivars to R. solanacearum using the developed method.

Complex-Periodic Cardiac Spiral Waves and Their Multi-Stability in Populations of Rat Ventricle Cells

황성민,이경진,김태윤 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.48 No.II

Dynamics and instabilities of reentrant spiral waves in excitable cardiac tissues are important in understanding various forms of cardiac arrhythmias such as ventricular tachycardia and fibrillations. However, they are still a subject far from being well understood. Here, we present complex-periodic cardiac spiral waves arising in a cultured monolayer tissue of rat ventricle cells. An interesting sequence of spontaneous transitions is observed. We demonstrate that this unusual phenomenon is driven by an intricate interplay between the spiral core and neighboring localized (absolute and partial) conduction blocks, to which the spiral core is entrained.

교통상황별 인지특성을 고려한 교통정보 방송멘트의 분류에 관한 연구

황성민,이병주,서승환,성수련,남궁문 한국ITS학회 2010 한국ITS학회논문지 Vol.9 No.3

교통방송에서 제공하는 교통정보는 방송매체의 특성상 정성적인 교통정보 방송멘트를 사용하고 있기 때문에 도로 상에서 정보 이용자가 공감할 수 있는 교통정보를 제공하기 위해서는 제보자와 정보 제공자의 판단 기준을 이용자 측면에서 명확한 정립이 필요하다. 이에 본 연구에서는 교통방송에서 명확한 구분 없이 임의적으로 사용되고 있는 교통정보 방송멘트에 대한 기준을 제안하고자 통신원, 교통방송 종사자, 운전자들이 동일하게 느끼는 교통상황 판단 기준과 교통정보 방송멘트에 대한 인지특성을 조사하고 분석하였다. 그 결과, 교통상황별로 인지 차이가 거의 없는 평균 통행속도를 기준으로 한 정보 제공이 이루어져야 하며, 통행속도를 기준으로 한 교통상황은 원활 상태가 60km/h 이상, 서행 상태가 40~60km/h 미만, 정체 상태가 40km/h 미만으로 분류됨을 알 수 있었다. 그리고 35개의 교통정보 방송멘트를 교통상황별로 분류해 본 결과, 원활 상태는 8개, 정체 상태는 9개로 명확하게 분류되었으나 18개 멘트는 애매하게 인지하고 있어 서행 상태를 표현하는데 적절하지 않음을 알 수 있었다. 따라서 ‘원활’, ‘서행’, ‘정체’라는 단어를 포함한 멘트를 직접 사용하는 것이 좋을 것으로 판단되었다. 향후 연구과제로는 차량 동적시뮬레이터 등을 통해 실제와 동일한 교통흐름을 재현하고 교통정보 방송멘트를 제공하고 운전자의 인지 반응을 조사하여 보다 명확한 기준을 정립해야겠다. Traffic broadcasting is using a usual traffic information announcement when giving its information to users on the road and for the provision of information useful to drivers, a clear criteria of how to judge with information from informers needs to be established from the perspective of users. In this study, to give some available criteria for current announcement which often causes confusion, cognitive characteristics were investigated and analyzed based on judgment criteria which are commonly felt by correspondents, participants in traffic broadcasting and drivers. The result requires the provision of information that is relied on an average speed where drivers feel little cognitive difference and found a classification where a smooth traffic flow is more than 60km/h, going slow 40~60km/h and congested state less than 40km/h respectively. And from the study of 35 traffic information announcement for different traffic situations, 8 cases of smooth state and 9 cases of congested state were clearly classified but the rest 18 cases of comment were ambiguously perceived by drivers and which requires the necessity of a announcement that uses directly the word of ‘smooth’, ‘slow’, and ‘congestion’ in the actual expression of slow driving. The future study should be focused on the establishment of more definite criteria by representation of nearly real traffic flow, provision of traffic information announcement and the analysis of cognitive response through car dynamic simulators and the kinds.

Validation of analytical methods for organochlorine pesticide detection in shellfish and cephalopods by GC–MS/MS

황성민,이행운,김정복,정명섭 한국식품과학회 2020 Food Science and Biotechnology Vol.29 No.8

This study validated the analysis oforganochlorine pesticides (OCPs) in shellfish and cephalopodsusing a gas chromatograph equipped with a massspectrometry (GC–MS/MS), and monitored residual pesticidelevels. The QuEChERS method was used to analyzeOCPs and was validated by checking the linearity, limit ofdetection (LOD), limit of quantitation (LOQ), accuracy,and precision. Octopus minor and Venerupis philippinarum,were purchased from four cities in the SouthKorean peninsula. The LOD values were 0.10–0.80 ng/g inshellfish and 0.21–0.77 ng/g in cephalopods, while theLOQ values were 0.31–2.41 ng/g in shellfish and0.63–2.33 ng/g in cephalopods. Accuracy ranged from 83.5to 117.4% and 79.8 to 118.4%, and precision ranged from0.3 to 27.5% and 1.2 to 27.9%, in shellfish and cephalopods,respectively, conforming to the Codex AlimentariusCommission guidelines. Although residual OCP levelswere below detection limits, the QuEChERS method maybe effective for analyzing the OCPs in shellfish andcephalopods.

스마트폰에 대한 긴급압수⋅수색의 효력 범위에 관한 고찰

황성민 단국대학교 법학연구소 2020 법학논총 Vol.44 No.3

The importance of forensic evidence derived from digital equipment such as smartphones, tablet PCs and smartwatches has been growing day by day in the recent investigative environment. In particular, smartphones are always carried around in almost every daily process, so there may be conclusive evidence to prove any criminal charges, such as messages, location information, Internet search data, photos and videos, voice materials, various memos, phone numbers, phone calls, and payment details. In addition, mobile devices, such as smartphones, are often confiscated under the warrant’s exception rules, such as search and seizure at the scene of arrest and search for 24 hours after emergency arrest, due to their characteristics that they are always carried and easily transported to the human body. Therefore, it may be questionable whether the emergency seizure will take effect even on electronic information stored in the smartphone, if it is urgently confiscated under the warrant’s exception rules without receiving a prior warrant. In my opinion, the above emergency seizure should be considered effective for the information that investigators can visually verify without any special technical measures during the natural use of the smartphone itself, which was urgently confiscated without a prior warrant. Therefore, in this case, only a post-warrant for the smartphone itself will be required. However, once the smartphone is urgently seized and it is sent back to the Digital Forensics Center to restore the information files, it is considerable to obtain additional warrant for the information file that has been e xtracted throu gh d igital f orensics, because i t is n ot t he d ata that c an be verified from the natural use of the smartphone itself. 최근 수사환경에서 스마트폰, 태블릿PC, 스마트워치 등 디지털 장비에서 도출되는 포렌직 증거의 중요성은 나날이 커지고 있다. 특히 스마트폰의 경우거의 모든 일상생활 과정에서 항상 휴대하게 되기 때문에 메시지, 위치정보, 인터넷검색 자료, 사진 및 동영상, 음성자료, 각종 메모, 전화번호, 통화내역, 결제내역 등 사생활 전반에 관한 무수한 정보가 함축되어지고 이로써 어떤 범죄혐의 입증에 결정적인 증거가 나올 확률이 높다. 더불어 스마트폰 등 모바일기기의 경우 사람의 신체에 항상 휴대되고 손쉽게 운반된다는 특성 때문에, 체포현장에서의 압수수색, 긴급체포 이후의 24시간 동안의 압수수색 등 영장주의 예외 규정을 통해 압수되어지는 경우가 많을 수 있다. 그렇다면 위와 같이 스마트폰의 편리한 휴대성으로 인하여 사전 압수수색영장을 발부 받지 아니한 상태에서 형사소송법상 영장주의의 예외 조항에 의하여 긴급하게 압수되었을 경우에, 스마트폰 내에 저장된 전자정보에까지도해당 긴급압수수색의 효력이 미칠 것인지가 문제될 수 있다. 생각건대, 영장 없이 긴급 압수된 스마트폰 자체의 자연적인 이용과정에서수사기관이 특별한 기술적 조치 없이 육안으로 확인할 수 있는 정보내용에 대해서는 위 긴급압수의 효력이 미친다고 보아야 한다. 따라서 이 경우는 스마트폰 자체에 대한 사후영장만 발부받으면 될 것이다. 그러나 일단 스마트폰을압수한 뒤에 이를 다시 디지털 포렌직 센터로 보내어 분석을 마친 후 디지털포렌직 센터에서 보내온 정보파일을 확인하여 그 과정에서 유효한 증거파일을확보하는 경우에는, 이미 스마트폰 자체의 자연적 사용을 통하여 축출할 수있는 자료가 아니므로, 해당 스마트폰 자체에 대한 사후 압수수색영장을 발부받음과 별도로 디지털 포렌직을 통해 축출한 정보파일에 대하여 추가로 사전압수수색 영장을 발부받도록 함이 상당하다.

BT인으로 성장시켜 준 사람들

황성민 한국생물공학회 2021 BT NEWS Vol.28 No.2