On the regularity of weak solutions of partial differential equations

김정수 釜山大學校 1964 論文集 Vol.5 No.1

[가상인터뷰 : 박두진을 만나다] 어떻게 당신은 이길 수가 있었는가?

김정수,김정수 새가정사 2016 새가정 Vol.685 No.-

우리시대 사진의 상황 : 무제 8 ( 김정수 )

김정수 현대사진영상학회 1998 우리시대 사진의 상황 Vol.- No.-

10대 카누 선수의 철분영양상태 조사

김정수,김선효,권용헌 한국운동과학회 2002 운동과학 Vol.11 No.2

김정수, 김선효, 권용헌. 10대 카누선수의 철분영양상태 조사. 운동과학 제11권 제2호, 535-550, 2002. 이 연구는 남녀 중·고등학교 카누선수를 preseason 중에 18명, season 중에 12명을 대상으로 식이 조사와 혈액검사를 통해 카누 선수의 스포츠 빈혈 요인을 분석하였다. Preseason과 season 중 남녀 카누 선수의 평균 연령은 15.3세, 평균신장은 173.3㎝, 평균체중은 64.9㎏이었으며, 평균체질량 지수(BMI)는 21.7로 표준 체중에 속하였다. 식이 조사는 24시간 기억법(24-hour recall method)과 CAN프로그램(computer aided nutritional analysis program; 한국영양학회개발)을 이용하여 조사된 내용을 한국인 영양 권장량(Korean RDA)과 비교하였다. 혈청 철, 혈철 페리틴, TIBC, TS, 헤마토크리트 그리고 헤모글로빈 등 철 영양상태에 대해 분석하였다. 연구결과 식이를 통한 하루 영양소 섭취량은 preseason보다 season동안에 남녀 선수 모두 높았으며, 남자선수에 비해 여자선수의 철 섭취량이 양호하였다(p<0.05). Preseason 중에 철 섭취량은 권장량의 63.7%로 낮았으며, season 중에는 권장량의 93.6%로 권장량고 거의 유사하였다(p<0.01). 끼니별 영양소 섭취 비율에서 preseason과 season 동안 아침, 점심, 저녁식사와 간식을 통한 영양소 섭취 비율은 남자선수의 경우는 양호하였으나, 여자선수의 경우 아침식사를 통한 영양소 섭취비율이 낮고 간식을 통한 영양소 섭취비율이 높아 바람직하지 못하였다. Preseason과 season 동안 동물성 식품과 식물성 식품을 통한 철의 섭취 비율은 남녀 모두 식물성 식품에서 2/3정도 섭취하고 있어, 연구대상자의 철의 주요 급원은 식물성 식품으로 나타났다. 전체 대상자의 heme 철과 nonheme 철 섭취량은 preseason 보다 season 동안이 2배정도 높았으나(p<0.05), 가상적인 철 흡수율은 season에서 낮았다. 이는 preseason에 비해 season에서 철 유용도가 낮은 식사를 하는 비율이 높았기 때문으로 생각된다. 혈청 철 농도와 transferrin 포화도는 preseason 보다 season에서 높았으나(p<0.05), ferritin을 제외한 혈청 철 영양 상태 분석 지표는 두 기간간에 차이가 없고 대부분이 정상범위에 속해 있었다. Preseason과 season에서 전체 대상자의 혈청 ferritin 농도와 혈청 중의 다른 철 영양 상태를 나타내 주는 지표들간의 상관관계는 혈청 ferritin 농도와 혈청 TS간에는 유의적인 양의 상관관계가 있었으나(p<0.05), 다른 지표간에는 유의성이 나타나지 않았다. 빈혈 발생 요인은 preseason에서 혈청 ferritin 44.4%, 철 농도 50%, TS 44.4% 그리고 Hb 13.3%, Hct 6.7%로 나타났으며, season에서는 33.3%, 25.0%, 25.0% 그리고 8.3%, 8.3%로 각각 나타났다. 연구 대상자의 식이를 통한 철 섭취량은 preseason에서는 불량하고 season에는 양호하여, 두 기간간에 차이가 있어 철 영양섭취가 평소에 고르게 이루어지지 않고 있음을 보여주었다. 그러나 season의 경우에도 철 유용도를 높일 수 있는 MPF나 비타민 C의 섭취가 적절히 이루어지지 못해, 철 흡수율을 떨어뜨릴 수 있는 등 철 섭취의 질적인 문제도 인식할 수 있었다. 따라서 preseason과 season의 구분 없이 철의 양적, 질적인 섭취를 고려한 균형 잡힌 식사와 함께, 개개인의 체력에 맞는 적절한 운동량 조절이 이루어져야 할 것이다. 또한 남녀 대상자 모두 흡수율이 낮은 nonheme 철을 주로 섭취하고 있으므로 육류의 붉은 살코기, 가금류 및 생선류 등을 주로 섭취하고 철의 흡수율을 높이는 데에 기여하는 비타민 C의 섭취도 충분히 해야할 것이다. 아울러 운동선수의 합리적인 영양관리를 위한 영양교육과 체력에 맞는 운동조절이 함께 이루어져야 카누선수들의 빈혈 발생률을 줄일 수 있을 것이다. Kim, J. S., Kim, S. H. and Kwon, Y. H. A Study on the Nutrition Status of Iron among Teenage Canoe Players in Korea Exercise Science, 11(2): 535-550, 2002. This study was carried out to compare the nutrition status of iron(Fe) among teenage canoe players in Korea between the periods of preseason and season, based upon dietary nutrient intakes and serum indices of Fe nutrition status. Subjects were composed of 18 and 12 students including male and females, in preseason and season, respectively. Blood was collected for all subjects after 15 hour fasting in preseason and in season, respectively. Serum Fe concentration, ferritin concentration, total Fe binding capacity(TIBC), transferrin saturation(TS), hematocrit(Hct) and hemoglobin(Hb) values were determined. As a result, dietary nutrient intakes were lower in preseason than in season. Daily dietary Fe intake of subjects was 63.7% during preseason, and that was 93.6% of the Korean PDA during season; thus Fe intake was significantly lower in preseason than in season (p<0.01). However, apparently absorption ratio of Fe was higher in preseason than in season as food source of iron tended to be better in preseason than did in season. Serum Fe concentration and TS were significantly lower in preseason than in season (p<0.05), other indices of serum Fe nutrition status were not different between in two periods except serum ferritin. Serum ferritin and TS had significantly positive correlation in two period (p<0.05),respectively. For the prevalence of anemia in preseason, 44.4%, 50.0%, 44.4%, 13.3% and 6.7% by determining serum ferritin concentration, Fe concentration, transferrin saturation, Hb and Hot, respectively. In case of season, the prevalence of anemia evaluated by serum ferritin, Fe concentration, transferrin saturation, Hb and Hct was 33.3%, 25.0%, 25%, 8.3% and 8.3%, respectively. As a consequence, canoe players should increase the intakes of foods containing heme-Fe such as red lean meat and also increase intake of vitamin C as an increasing factor of bioavailability of vitamin C in order to prevent the sport anemia by enhancing the nutrition status of Fe, and they should manage their meals evenly through preseason and season.

2000 년도 추계총회 및 연구논문 발표회를 마치고

김정수 한국고분자학회 2000 고분자 과학과 기술 Vol.11 No.5

신갈천의 조류분포

김정수,구태회 경희대학교 환경연구소 1998 環境硏究 論文集 Vol.8 No.-

This is a report on the birds recorded from May 1995 to April 1996 in Shingal stream and reservoir. During the investigation period was observed a total 41 species and 7,932 individuals. The most dominant species was Anas poecilorhyncha 59.20%(4,696 individuals), followed by Passer montanus 14.12%(1,120 individuals), Anas platyrhynchos 5.50%(436 individuals) and Pica pica 5.02%(398 individuals). The index of species diversity and no. of equally common species were each 1.608, 4.991. Monthly of the most species and individuals were investigated at February that were 18 species and 2,475 individuals. The highest species diversity and no. of equally common species were 1.827, 6.215 respectively at June 1995. Seasonally the most species and individuals were watched in winter that were 28 species and 4,760 individuals. The highest species diversity and no. of equally common species were each 1.671, 5.322 at spring.

그레이 코드화된 안테나 순서의 차등 공간 변조

김정수,이문호,Kim, Jeong-Su,Lee, Moon Ho 한국인터넷방송통신학회 2017 한국인터넷방송통신학회 논문지 Vol.17 No.5

In this paper, we propose a gray code order of antenna index permutations for differential spatial modulation (DSM). To facilitate the implementation, the well-known Trotter-Johnson ranking and unranking algorithms are adopted, which result in similar computational complexity to the existing DSM that uses the lexicographic order. The signal-to-noise ratio gain achieved by the proposed gray code order over the lexicographic order is also analyzed and verified via simulations. Based on the gray coding framework, we further propose a diversity-enhancing scheme named intersected gray (I-gray) code order, where the permutations of active antenna indices are selected directly from the odd (or even) positions of the full permutations in the gray code order. From analysis and simulations, it is shown that the I-gray code order can harvest an additional transmit diversity order with respect to the gray code order. 본 논문은 차등공간변조(DSM)를 위한 안테나 인덱스 순열들의 그레이 코드 오더를 제안한다. 실행하기 위해서 계산 복잡도(Computational complexity)와 사전 편찬식 오더를 사용하는 기존 DSM 이 둘의 유사성을 도출한 Trotter-Johnson의 유명한 Ranking & Unranking 알고리즘들을 차용했다. 사전 편찬식 오더를 넘어선 그레이코드로 얻어낸 신호 대비 잡음비는 시뮬레이션들을 통해 성능이 분석되었다. 그레이 코딩 프레임워크를 기초로, 그레이 코드 오더에 속한 완전 순열들의 예상되지 않는 위치들에서 직접적으로 선택된 액티브 안테나 지수들의 순열들이 있는 인터섹티드 그레이 코드(I-code) 오더로 명칭된 다양성-강화 기법를 제안한다. 분석과 시뮬레이션들에서, I-Gray 코드 오더가 그레이 코드 오더에 대한 추가적인 다이버시티 차수를 만들어 내 성능이 우수했다.

"단원 김홍도 화집(畵集)에 나타난 국악기"

김정수 용인대학교 조형연구소 2000 조형논총 Vol.5 No.-

It's well known that Kim hong Do, whose pen name is Danwon, produced genre paintings according to the order from King Jeongjo. King Jeongjo who was as great as King Sejong might well have interest in the lives of the people. He had Danwon paint their lives because it's not possible for him to observe how individual people lived. Every genre paintings of Danwon gives very realistic description of the grass roots in daily living. The fact the grass roots, not the noblemen, were the main object in the genre paintings is very worth noting. In addition, Danwon painted multiple royal events upon the order from the King, which are categorized into parade painting or banquet painting. On the other hand, the classical musical instruments included in Kim Hong Do paintings show the musical customs in the late Chosen Age. We can detect the learned men's refined entertainment culture from a picture of Bipa(Korean mandolin) on the wall of a room where a scholar learns how to play the Geomungo(Korean Harp with six strings) Some paintings depict a boy or an unworldly man who plays the Danso(small notched bamboo vertical flute) or Sangwhang(free-reed mouth organ). Others showed in which way Samhyeon Yukgak were organized for the grass roots dancing party, and a military band appears in parade painting that described royal events. But the comparison of the classical instruments in Kim Hong Do book of paintings and current ones is beyond my artistic capabilities. There is a need for a closer joint researches among music, art and related academic circles.

농구수행에 관련된 개인의 심리적 변인이 팀응집력에 미치는 영향

김정수,이용현 세명대학교 2000 世明論叢 Vol.8 No.-

The purpose of this study was to examine the effect on the team cohesion in psychological factors with basketball which required team cohesion. subject(N=226) were consist of middle and high school athletes(male) which were located in S and K area. The questionnaire designed for this study included: 1) competitive state anxiety-18items, 2) motivation climate-13items, 3) state self-confidence-13items, 4) team cohesion-22items. The statistical methodologies to analyze the data were descriptive statistics, one way ANOVA, correlation analysis and regression analysis. The result of this study by the process and the data mentioned above shows the followings: First, there are significant difference between exercise career and the team cohesion. Second, there are significant relationships between exercise career and the team cohesion. Third, there are effect on team cohesion and task cohesion with competitive state anxiety, cognitive state anxiety and somatic state anxiety. Fourth, there are effect on team cohesion with motivation climate. Fifth, there are effect on team cohesion with state self-confidence. Sixth, there are effect on team cohesion with competitive state anxiety, motivation climate and state self-confidence. This thesis shoes that the competitive state anxiety affects, especially, the task cohesion negatively, and that the motivation climate and the state self-confidence are important in maximizing the team cohesion. In conclusion, I suggest that coaches should establish the effective strategies in order to overcome athletes' anxieties, to stimulate their motivation and to increase their self-confidence.

고분자 신합성법

김정수 한국고분자학회 1997 고분자 과학과 기술 Vol.8 No.4