THERRESTRIAL IMPACT CRATERING CHRONOLOGY: A PRELIMINARY ANALYSIS

Moon, Hong-Kyu,Mi, Byung-Hee,Fletcher, Andre-B.,Kim, Bong-Gyu The Korean Space Science Society 2001 Journal of Astronomy and Space Sciences Vol.18 No.3

We have recently compiled a database of the properties of 192 impact craters, which supercedes previous compilations. Using our database, the impact structures found in North America, Europe and Australia have been examined; these cratonic areas have been relatively stable for considerably long geological periods, and thus have been best preserved. It is confirmed that there is a close correlation between the geological epoch boundaries, the epochs of mass extinctions, antral the "timing" of impacts. In addition, the terrestrial cumulative flux of objects >20km is found to be $1.77{\times}10^{-15}km^{-2}yr^{-1}$, over the last 120 Myr, which is much smaller than the published values in McEwen et al. (1997) and Shoemaker (1998) ($5.6{\pm}2.8{\times}10^{-15}km^{-2}yr^{-1}$. For terrestrial impact structures with D> 50 km, the apparent cumulative flux over the last 2450 Myr is ~50 times smaller than the corresponding value for the Moon. If we assume that the Earth and the Moon suffered the same level of bombardment over this time, this would mean that the actual flux of impacting bodies, capable of making craters with D)50 km, was ~ 50 times larger than the apparent flux estimated from the currently known terrestrial records.

국어 성조 체계의 ‘말(馬)’-형 선호 경향과 그 의의

이문규(Lee, Moon-Kyu) 한국어문학회 2018 語文學 Vol.0 No.141

Among several tone patterns in the Korean tone system, there is a tendency for the ‘mal(馬)’-pattern to have the strongest preference. This is based on the following several tonal phenomena: 1) All three replacements of tonal patterns that are common in the middle Korean and the modern Korean tone dialects aim the ‘mal(馬)’-pattern. And these replacements have been expanded with time. 2) The ‘mal(馬)’-pattern is the common tonal pattern of all the symbolic words in both the middle Korean and the modern Korean tone dialects. 3) The ‘mal(馬)’-pattern shows a significantly higher share in the tonal patterns of Sino-Korean family names than in the sound of Chinese characters used for other words. 4) The ratio of the ‘mal(馬)’-pattern has diachronically increased in the tonal patterns of Sino-Korean words. It is reasonable to assume that the preference for the ‘mal(馬)’-pattern should go back to the period when the pattern was with the initial-low-tone since it is phonetically the most unmarked tonal pattern. Furthermore, it can also be assumed that the tone systems of the middle Korean and the Hamgyeong-dialect group with the ‘mal(馬)’-pattern in the initial-low-tone, are the closest to the proto-Korean tone system.

‘말(語)-류’ 성조형의 방언 간 대응 양상과 의의

이문규(Lee, Moon-kyu) 한국어문학회 2015 語文學 Vol.0 No.128

This study examines the correspondence aspects of ‘mal(語)-pattern’ and direction of change of tonal system in the Korean tone dialects. The correspondence aspects of the surface tonal patterns of ‘mal(語)-class’ in middle Korean and several modern tone dialects are may be summarized as follows. [표참조] After considering the aspects, we can realize the fact that there is a tendency for ‘mal(語)-pattern’ to be integrated into ‘mal(斗)-pattern’ or ‘mal(馬)-pattern’ in Korean tonology. The ‘mal(語)-pattern’ [HLLL] of Yukjin dialects is the result of the change ‘[RLLL] >[HLLL]’. And ‘mal(語)- pattern’ [HHLL] of the young generation of Daegu dialect is the the result of the change ‘[RHLL] > [HHLL]’. Both [HLLL] and [HHLL] are ‘mal(斗)- pattern’ in those dialects. On the other hand, [LHLL] of Jinju dialect is ‘mal (馬)-pattern’. At the pitch system level, this integrating phenomenon of ‘mal(語)-class’ is the process in which ‘rising’ or ‘lowest’ pitch extinct because of their articulatory difficulties. And at complexity class of tonal system, this phenomenon implicate that three-tonal patterns system of Korean tonal dialects changes to two-tonal patterns systems, and ultimately these dialects are changing to non-tone language.

플라비아닌산을 이용한 클로르프마진의 용매추출 분광광도법

정문모,남수자,이미나,이지연,허문회,안문규 慶星大學校 1998 論文集 Vol.19 No.2

성조형 실현 규칙의 임의화와 16세기 말엽의 성조 체계

이문규(Lee, Moon-Kyu) 한국어문학회 2017 語文學 Vol.0 No.137

The Incapacitation of the actualization rules of the tonal pattern (TP) reveals the remarkable changes since the “side-dot” began to be used in the documents in the history of Korean tonal system. It is noted that no other significant changes occurred in the level of morphemic TP or combination of TP in the same period. The actualization rules of TP consists of the “pitch-assignment rules” and the “pitch-adjustment rules.” These actualization rules in Korean were gradually incapacitated toward the end of the sixteenth century. During the mid-fifteenth century, the surface TP of a phonological word was aligned with the actualization rules of TP. However, it brought the changes at the end of sixteenth century, affected by the incapacitation of the pitch-assignment rules and the pitch-adjustment rules. The incapacitation of the actualization rules of TP has blurred the distinction between tonal patterns and pitches. Additionally, this phenomenon is interpreted to cause the dephonologizing of Korean tones. In conclusion, the incapacitation of the actualization rules of TP shows that the second stage of tonological changes of Korean language had already appeared in the end of the sixteenth century. It seems reasonable to argue that the tonal system in the sixteenth century should be distinct from that of the mid-fifteenth century. Until the sixteenth century the incapacitation of the actualization has been complete, as the source materials maintain the morphemic TP system and the first stage of tonological pattern in the fifteenth century.

달 탐사선의 발사 요구조건 및 임무궤도 사례연구

석병석(Suk, Byong-suk),민승용(Min, Seung-yong),권재욱(Kwon, Jae-wook),김창균(Kim, Chang-kyoon),문상만(Moon, Sang-man),최수진(Choi, Su-jin),구철회(Koo, Cheol-hea),김인규(Kim, In-kyu),류동영(Ryu, Dong-young) 한국항공우주연구원 2015 항공우주산업기술동향 Vol.13 No.2

시험용 달 궤도선의 발사 요구조건 사전 분석 단계로 최근 외국에서 발사한 달 탐사선의 발사 요구조건을 분석하였다. 일반적으로 달 탐사선의 발사 요구조건은 달 임무 궤도를 결정하는 중요한 요소이며, 또한 지구, 달, 태양의 상대적인 운동으로 인해 임무궤도 요구조건을 만족하는 발사 가능 시간이 주기적으로 반복되는 경향이 있다. 분석 결과 설정된 발사 요구조건들로부터 달 궤도선의 주 임무가 달의 남/북극 지역의 광학 관측 임을 간접적으로 알 수 있었다. 향후 우리나라 달 궤도선 발사 요구 조건 설정에 본 논문이 도움이 되길 기대한다. In the preliminary study on launch window requirement for Korea Path-finder Lunar Orbiter(KPLO), the recent foreign lunar orbiter’s lauch window requirement was analyzed. Normally, the launch requirements depends on the mission orbit. Based on the relationship between Moon, Earth, and Sun, the launch time will be available periodically to meet requirements. In this paper, it is understood that the launch window requirements come from payload mission requirements to take picture each poles of Moon. This paper might be a practical example to derive KPLO launch requirements in the future.

小兒 急性絲述體腎炎에 있어서 血淸 免疫글로불린에 關한 硏究

文松洙,韓圭炯,明槿哲,文炅來,羅昌洙 조선의대 1984 The Medical Journal of Chosun University Vol.9 No.1

거골에 발생한 거대세포종 : 증례 보고 Report of 1 Case

문명상,이규성,변상태 최신의학사 1986 最新醫學 Vol.29 No.6

身體部位가 體力에 미치는 影響

文圭鎭 釜山敎育大學 1983 부산교육대학 논문집 Vol.19 No.1

The purpose of this Study is to find what part of a human body affects physical fitness. For this study: 1. The subjects was arandom election of 100 students in B High School. 2. The correlation coefficient of part of a human body and physical fitness, and the mean, standard deviation of each items were figured out. 3. The items testedare: length of lower limb, length of lower thigh, length of upper thigh, length of upper limb, length of upper arm, length of fore arm, Girth of upper arm, Girth of fore arm, girth of thigh girth of calf, and 100m dash, ball throwing, standing broad Jump, sit up, chinning the bar as physical fitness factors. The following conclusion has been drived from the fore going results through analyses and observations. 1. girth of upper arm, girth of fore arm, girth of thigh, and girth of calf have an effects on 100m dash and ball throwing, but don't have an effects on standing broad jump, chinning the bar and sit up. 2. length of upper limb has an effects on every physical fitness factors except sit up. 3. length of upper arm has only a little effects on 100m dash and chinning the bar, but has a considerable influence on standing broad jump. 4. length of fore arm has an influence on 100m dash, Ball throwing and chinning the bar. 5. length of lower limb has a considerable influence on standing broad jump, chinning the bar, sit up 6. length of lower thigh has an effect on standing broad jump, chinning the bar, and length of upper thigh has a considerable influence on chinning the bar item only. 7. 100m das and Ball throwing are evenly effected all parts of human body, and standing broad jump and chinning the bar chiefly are affected by length of upper and lower limb, and sit-up item is influenced chiefly by the length of lower limb.

TMCP 강재를 사용한 용접 H형강 보-기둥의 특성에 관한 연구

문태섭,김규석,김동규,김덕재 서울市立大學校 1993 論文集 Vol.27 No.-

This paper is the experimental study on the behavior of welded H-shape beam-column using TMCP steel. The purpose of this paper is to evaluate the elasto-plastic behavior of TMCP steel as it applies beam-column members. In the test, H-188 ×188 ×30 ×30 shape beam-column was loaded monotonic and cyclic by parameter "e"(eccentricity). The structural behavior of specimen under the eccentric loading have been evaluated by moment-curvature relationship and load-deflection relationship. Their load carrying capacities from the result of the test are compared with the theoretical load capacities based on P-M interaction curve.