가을철 한반도의 기압계 유형과 안개발생에 관한 연구

민경덕,김동정 경북대학교 환경과학연구소 1990 環境科學硏究所論文集 Vol.4 No.1

Meteorological status for Autumn fog at 14 observing stations for the period 19801985 were studied to understand the relationships between pressure patterns and fog-occurrences over Korean peninsular. The relationships between pressure pattern and fog-occurrences were established using weather maps. Predominent pressure patterns for favorable fog-occurrences are divided into four types, which are front and trough pattern (3396), migratory tonal belt type anticyclone pattern(306), migratory meridional belt type anticyclone pattern(1596) and transformed anticyclone pattern(156).

Three-Point 전극(電極) 배열법(配列法)을 이용(利用)한 전기(電氣) 비저항탐사(比抵抗探査) 모형연구(模型硏究)

민경덕,김종미,Min, Kyung Duck,Kim, Chong Mi 대한자원환경지질학회 1981 자원환경지질 Vol.14 No.3

This study is a model analysis for an effective application of the geophysical prospecting to the investigation of geological structures or useful resources, and the purpose of it is to research a property of the electrical resistivity prospecting, especially by using a Three-Point electrode array method. In using the Three-Point electrode array method, it is theoretically assumed to choose the infinite for a distance between the two current electrodes, however it is impossible in applying to the practical field prospecting. Therefore this study was conducted for determination and presentation of a minimum appropriate distance between the two current electrodes by making a study on prospecting effect in the variation of distance between both the electrodes. In case that the ratios of the distance between the two current electrodes to that between the two potential electrodes are respectively chosen for 40, 400, 5,000, the experimental data of this study showed that the minimum appropriate distance between the two current electrodes is forty times as much as that between two potential electrodes. In order to make clear a problem about prospecting depth which is essential to the data processing, it had been chosen equally to the distance between two potential electrodes. As a result of it, it was shown that the anomaly is appeared along the position of an assumed ore body. Consequently it was found out that the prospecting depth of the Three-Point electrode array method is the same as the distance between the two potential electrodes. From the model experiment on the sheeting ore body(or linear structure) of horizontal, dipping of $30^{\circ}$, $60^{\circ}$ and vertical on the basis of above experimental condition, it was found out that the position and dip of assumed ore body could be inferred from the aspects of the equiresistivity curve. In consequence of performing out the simultaneous Normal and Reversal electrode movement, it was shown that the electrode movement of the Reversal forms the anomaly more clearly than that of Normal when the sheeting ore body is situated obliquely, therefore it could be ascertained that the electrode movement have to be performed simultaneously in the manner of Normal and Reversal. It was also exhibited that the aspect of the equiresistivity curve forms symmetrically when an assumed ore body (or linear structure) is situated horizontally or vertically, that is, symmetrically, and moreover that the aspect of the equiresistivity curve forms unsymmetrically when an assumed ore body (or linear structure) is situated obliquely. On the basis of these experimental analysis it is thought that it can be inferred from the aspect of equiresistivity curve whether an assumed ore body is obliquely situated or not.

포항 및 장기분지에 대한 고지자기, 층서 및 구조 연구; 중력탐사에 의한 홍해 및 형산강지역의 지질구조

민경덕,윤혜수,문희수,이현구,김인수,Min, Kyung Duck,Yun, Hyesu,Moon, Hi-Soo,Lee, Hyun Koo,Kim, In-Soo 대한자원환경지질학회 1992 자원환경지질 Vol.25 No.3

The gravity measurement has been conducted at 327 station with an interval of 25 m along the survey lines of 1.6 km and 1.7 km traversing Hyungsan river and of 2.35 km and 2.42 km running N-S direction near Heunghae-eup in Pohang basin. Bouguer gravity anomalies were obtained, and geologic structure along four survey lines were interpreted by applying Fourier series and Talwani methods for two demensional body. A fault is in existence along the Hyungsan river, and northern block of it is displaced down by 150 m to 200 m relative to southern one. The thicknesses of Yeonil Group vary from 250 m to 550 m and from 150 m to 300 m in the northern and southern blocks of the fault, respectively. Another fault is in existence running E-W direction near Heunghae-eup, and its southern block is displaced down by about 250 m relative to its northern block. The thicknesses of Yeonil Group vary from 200 m to 400 m and from 500 m to 700 m in the southern and northern blocks of the fault, respectively. Above two faults are normal faults and make a graben structure, which results the age of rocks in the central region between the faults is younger than those of outside regions. This result coincides with that of paleontological study.

Scoping Review of Machine Learning and Deep Learning Algorithm Applications in Veterinary Clinics: Situation Analysis and Suggestions for Further Studies

민경덕 한국임상수의학회 2023 한국임상수의학회지 Vol.40 No.4

Machine learning and deep learning (ML/DL) algorithms have been successfully applied in medical practice. However, their application in veterinary medicine is relatively limited, possibly due to a lack in the quantity and quality of relevant research. Because the potential demands for ML/DL applications in veterinary clinics are significant, it is important to note the current gaps in the literature and explore the possible directions for advancement in this field. Thus, a scoping review was conducted as a situation analysis. We developed a search strategy following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. PubMed and Embase databases were used in the initial search. The identified items were screened based on predefined inclusion and exclusion criteria. Information regarding model development, quality of validation, and model performance was extracted from the included studies. The current review found 55 studies that passed the criteria. In terms of target animals, the number of studies on industrial animals was similar to that on com- panion animals. Quantitative scarcity of prediction studies (n = 11, including duplications) was revealed in both industrial and non-industrial animal studies compared to diagnostic studies (n = 45, including duplications). Qualitative lim- itations were also identified, especially regarding validation methodologies. Con- sidering these gaps in the literature, future studies examining the prediction and validation processes, which employ a prospective and multi-center approach, are highly recommended. Veterinary practitioners should acknowledge the current limitations in this field and adopt a receptive and critical attitude towards these new technologies to avoid their abuse.

칼슘길항제 Nifedipine의 실험적 심근경색 예방에 관한 조직학적 연구

민경덕 中央大學校 醫科大學 1986 中央醫大雜誌 Vol.11 No.1

과학적 사고의 학습지도와 평가

민경덕 경북대학교 과학교육연구소 1989 科學敎育硏究誌 Vol.13 No.-

Estimating the Effectiveness of Non-pharmaceutical Interventions on COVID-19 Control in Korea

민경덕,강희원,이주연,Jeon Seonghee,조성일 대한의학회 2020 Journal of Korean medical science Vol.35 No.35

Background: The coronavirus disease 2019 (COVID-19) pandemic has posed significant global public health challenges and created a substantial economic burden. Korea has experienced an extensive outbreak, which was linked to a religion-related super-spreading event. However, the implementation of various non-pharmaceutical interventions (NPIs), including social distancing, spring semester postponing, and extensive testing and contact tracing controlled the epidemic. Herein, we estimated the effectiveness of each NPI using a simulation model. Methods: A compartment model with a susceptible-exposed-infectious-quarantined- hospitalized structure was employed. Using the Monte-Carlo-Markov-Chain algorithm with Gibbs' sampling method, we estimated the time-varying effective contact rate to calibrate the model with the reported daily new confirmed cases from February 12th to March 31st (7 weeks). Moreover, we conducted scenario analyses by adjusting the parameters to estimate the effectiveness of NPI. Results: Relaxed social distancing among adults would have increased the number of cases 27.4-fold until the end of March. Spring semester non-postponement would have increased the number of cases 1.7-fold among individuals aged 0–19, while lower quarantine and detection rates would have increased the number of cases 1.4-fold. Conclusion: Among the three NPI measures, social distancing in adults showed the highest effectiveness. The substantial effect of social distancing should be considered when preparing for the 2nd wave of COVID-19.

Prevalence of endoparasite infection on stray dogs in Chungbuk province

민경덕,김당영,강봉수,윤재선,설자경,윤자선,정재황,남상윤,윤영원,김종수,이범준 한국예방수의학회 2013 예방수의학회지 Vol.37 No.1

As the companion animal industry has shown rapid development in Korea, the number of stray animals has increased. This phenomenon has become a social issue in terms of animal welfare, as well as public health-related problems. However, the authorities have difficulty in coping with the problems, because the number of research studies on stray animals is insufficient. In this study, 49 feces of stray dogs were examined in three animal shelters located in Chung-buk province,in order to establish baseline data for parasite distributions on stray dogs. The zinc-sulfate flotation and formalin-ether sedimentation methods were used for parasite isolation. The examined dogs consisted of 26 males and 23 females, and they were categorized as three groups, including puppies (<1y), juveniles (1-3y), and adults (>3y). On microscopic examination,28 feces were considered as infected (57.14%). The isolated parasite eggs were composed of 11 different species. The most frequent species was Ancylostoma caninum (28.57%), followed by Isospora canis (24.49%), Trichuris vulpis (10.20%),Toxocara leonina (6.12%), etc. The older dogs had a higher prevalence rate, however, no significant relevance were observed between sex and prevalence. All cases of Toxocara leonina infection (n=3) belonged to the male group, and all cases of Trichuris vulpis infection (n=5) belonged to the juvenile group. Infection of A. caninum and I. canis were identified as the most frequent case of co-infection. A. caninum and I. canis were the parasites showing the greatest infestation in Chungbuk. In addition, as zoonotic parasites were identified, a proper surveillance system should be required.

이중도플러 레이다에 의한 중규모 대류계의 강수 및 바람장 분석

민경덕 慶北大學校 基礎科學硏究所 1996 慶北大學敎 基礎科學硏究所 硏究論文集 Vol.17 No.2

하이브리드 자동차용 엔진 최적화

민경덕 한국자동차공학회 2007 한국자동차공학회 Workshop Vol.2007 No.-