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韓國 行政區域의 歷史地理에 關한 硏究 : 「道」에 對하여 A Case of "DO"(道)
李聖學 경북대학교 사회과학대학 1982 社會科學 Vol.1 No.-
1) "DO" (道), one of the Korean administrative districts, originated from the "Gu-Ju" (九州) system, imitating that of China. And it improved "Sip-Do"(十道) system, "O-Do-Yang-Ge"(五道兩界) system of Ko-Ryeo(高麗) and "Pal-Do"(八道) system and "Sip-Sam-Do"(十三道) system of Jo-Sun(朝鮮). 2) A border each "DO" is established by the natunal conditions and each of "DO" has its own geographical and historical traits. 3) Although there were every types of administrative districts names, (Gyeong-京·Bu-府·Mok-牧·Kun-郡·Hyun-縣), under the "Do" system. And the institution and character of administrative districts are varied by the times. 4) The name of "DO" is taken after the name of "Eup"(邑) and it is modified by the doscent and ascent of the "Eup" level. 5) Government-area of "DO" originated from the "0-Do-Yang-Ge" system of Ko-Ryeo is varied by the times and it accomplished today's "DO"-area.
Systemic Plasmacytosis - A Case Report with a Review of the Literature -
이성학,유창영,정지한,유진영,강석진,강창석 대한병리학회 2011 Journal of Pathology and Translational Medicine Vol.45 No.6
Systemic plasmacytosis is an uncommon disorder characterized by widely disseminated macular skin eruptions composed of polyclonal lymphoplasmacytic infiltrates associated with variable extracutaneous involvement. An aggressive clinical course has been observed in a small number of patients, but most cases have followed chronic and benign clinical course without spontaneous remission. Previously reported cases of this entity have been described almost exclusively in Japanese patients. We recently experienced a case of systemic plasmacytosis in a 48-year-old Korean female patient. Initial skin biopsy specimen revealed patchy perivascular and periadnexal infiltrates of mature plasma cells. Serum immunoelectrophoresis revealed polyclonal hypergammaglobulinemia, and polyclonal plasmacytosis was noted on the subsequent biopsy specimens of left supraclavicular and axillary lymph nodes. Multiple tiny pulmonary nodules appeared six years after the initial cutaneous presentation and were found to be of the same histologic appearance. We herein report a rare case of systemic plasmacytosis with a review of the literature.
직접퀀칭된 Cu 함유 고강도강의 미세조직과 기계적 성질
이성학,주웅용,유장용,황근철 대한금속재료학회(대한금속학회) 1998 대한금속·재료학회지 Vol.36 No.2
The present study is concerned with the processing of copper-bearing high strength steels by direct quenching and tempering (DQ&T) processes. Two DQ&T steels were rolled at different finish rolling temperatures, and their microstructures and mechanical properties such as strength and impact energy were compared with those of a reheat quenching and tempering(RQ&T) steel. The microstructural analyses indicated that the as-quenched microstructure of the DQ steels consisted of refined lath martensite including a number of dislocations, which acted as preferred precipitation sites for NbC or ε-Cu particles during tempering. These fine precipitates were not coarsened much up to the tempering temperature of about 650℃ and thus played a role in improving the tempering resistance. Especially in the DQ&T steel quenched at 760℃ and tempered at 660℃, yield strength reached 1050㎫ and Charpy impact energy at -18℃ showed 140J, indicating the potent effect of the DQ&T process. These findings suggest that copper-bearing low carbon alloy steels with high strength and toughness can be made by the DQ&T process.
地域 硏究의 計量的 方案과 實際 : 主로 土地의 垂直的 利用度 硏究
李聖學 경북대학교 교육대학원 1970 논문집 Vol.1 No.-
⑴ This study suggests quantitative method whch helps to know the limited height of crop-cultivation in land-utilization, and apply it to area. ⑵ The measurement method of crop-culivation in land-utilization. ① Limited Height=(A-B)/R×100 A: Average temperature of the region B: Cultultivation-condition of aptitude temperature of Crop-cultivation R: Lapse rate ⑶ Regression equation of temperature on latitude and its correlation and regional differences, as follow: (See Figure 7 and pp.11∼12) ⑷ The slope of Regression line is small when the Regnession-coefficient is small, and this is same ration of regional differences of temperature, therefore differences of crop-cultivation are smaller in annual crops than perannual crops. ⑸ Regression Equation of Y on X in Korea ◁표 삽입▷ (원문을 참조하세요)
李聖學 慶北大學校 1980 論文集 Vol.30 No.-
1. The administrative boundary of Korea in largely established by its topograpical condition, and its social background. However, its administrative districts are analogous to the hexagonal region model of Christraller and Lo¨sch's central place theory as the mean contact number of boundaries is 5 to 6. 2. The correlation coefficient between the contact number of the administrative boundaries and an index of boundary flexure, an index of shape, and area size which are concerned with the contact number is 0.5 respectively on the average. In boundary, and a rank of area size is about 0.8, we find that it applies to the so called "Magnetic Domain Theory". 3. I'll explain later the correlation between the contact of administrative boundary and a transportation sphere, a cultural sphere, and an economic sphere respectively.
축산농장 배출 가스상 대기오염물질과 기상인자간 상관관계 분석
이성학,김혜승,주흥수 한국냄새환경학회 2020 실내환경 및 냄새 학회지 Vol.19 No.4
The correlation among gaseous air pollutants (odorous compounds, greenhouse gases) and meteorological parameters was analyzed in-depth using measurement data at a barn and ambient in a naturally ventilated dairy farm. Both concentration and emission data (loading rate and emission rate), which more accurately express the actual pollutant emissions, were used in the correlation analysis. Gaseous air pollutants (ammonia, hydrogen sulfide, carbon dioxide, nitrous oxide, methane) and meteorological factors (relative humidity, temperature, wind speed, solar strength) were measured for one week in July 2013. The upper and lower outliers of measured data by inducing 1.5 times the interquartile range (IQR) were eliminated. After eliminating the outliers and grouping according to data magnitude, the correlation analysis among gaseous compounds and meteorological factors was conducted using the average values of each group. In the correlation analysis, data for the emission rate (barn) and the loading rate (ambient) showed a better correlation than concentration data. Gaseous air pollutants except for hydrogen sulfide in the barn showed a good correlation. Hydrogen sulfide might not be produced from manure or animal origin. Rather, the compound may be produced by flushing water, which was flushed at periodical times (every six hours). Ammonia emissions increased with increasing temperature, and this increase can be affected from greater exertion of feces by frequent water drinking in a high-temperature condition. In the ambient, the correlation for all gaseous air pollutants was better than that in the barn, because those air pollutants from manure, animals, and flushing water origins were sufficiently mixed in the atmosphere. Wind speed also showed a good correlation with all gaseous air pollutants.