明治維新 前後史의 再解析 : '海洋에토스'의 發現 過程을 中心으로

홍정기 西江大學校 1991 국내석사

일개 병원 건강증진센터에 내원한 여성에서 대사증후군과 고밀도 유방과의 관련성

홍정기 충남대학교 보건대학원 2012 국내석사

Background: Metabolic syndrome and dense breast are well known as breast cancer risk factor, however there have been few studies about them. therefore we evaluated association between them among Korean female population Methods: We recruited 6,108 healthy women who underwent screening for mammography in Daejun Sun health promotion center from january to december, 2010. On the basis of ACR BI-RADS breast composition, we analyzed each metabolic abnormalities of metabolic syndrome and dense breast and estimated odds ratio and 95% confidence interval with logit regression analysis. Results: The mean age and BMI were 46.1 years, 22.6 kg/m2. 615 women had metabolic syndrome and 4,056 women had density breasts. Odds ratio for metabolic syndrome to dense breast was 0.549 (p<0.01). Conclusion: The metabolic syndrome was not correlated with density breast in healthy Korean women. Our findings suggested that metabolic syndrome did not increase breast cancer risk by density breast.

옥수수의 裁培環境要因과 出絲期 遮光이 生理生態的 特性 및 不稔에 미치는 影響

홍정기 江原大學校 大學院 1993 국내박사

Studies were conducted to determine the effects of cultural ennvironment and low light intensity at silking stage on physiological and morphological traits associated with occurrence of barren ear in corn ( Zea mays L.). The occurrence rate of barren ear, and aspects of barren ear formation under different cultural envi- ronment were investigated in fields where barren ears were occurred in 1983. Also, relationships among the occurrence rate of barren ear, planting date, and planting density were determined. Under artifical shading during silking stages, the effects of shading duration and light intensity on physiological and morphological traits of corn were determined, Also, the occurrence rate of barren ear under artifical shading was compared to occurrence rate of barren ear under natural lights. The results were as follows; 1. Barren ears occurred in the corn field in 1983 were not related with varities, field location, and fertilization practice. However, the highest rate of barren ear occurrence was observed in the field where late planting and high planting density were practiced. This was attributed to a continuous light deficiency (2. 5hour) over 9 days at silking stage. 2. Differnces in barren ear occurrence rate were recognized to be dependent on region and planting date. This result was considered to be caused by light deficiency at silking stage, because the shorter exposure to lights resulted in the higher occurrence rate of barren ear. 3. The occurrence rate of barren ear increased as planting density was increased. The occurrence rate of barren ear increased from 15% in 44, 000plants/ha to 55% in 55, 000 plants/ha. Increased rate of barren ear occurrence in higher planting density was considered to be caused by low light acceptance rate of corn. 4. Under shading conditions during ear development and silking stages the occurrence rate of barren ear was 100%. However, the shading after silking date did not influence the the occurrence of barren ear, From the these result, it was found that barren ear occurrence was determineed primarily at ear development and silking stages. 5. Under the shading during 15 days in silking stage, 10days before and 5 days after the silking date, it was found the barren ears were started below 31 Klux. However, the occurrence of barren ear was 100% below 19 Klux. 6. The occurrence rate of barren ear under 30 Klux for 6, 9, and 12 days during silking stages were 25, 35-65, 65-75%, respectively. 7. Corn plant of barren ears caused by artificial shading at silking stage showed a poor partition of^(14)C in ear, decrease of chlorophyll content in leaves, increase of NO_(3) -N, and decrease of NH_(4)-N and amino acid contents in plants. These result indicated an impediment of nitrogen and carbon metabolism and poor transportation products to ear 8. Development and emergence of tassels was not blocked by 15 days of shading during silking stage, and pollens formed under this condition was normally fertile. However, silks ware not elongated and emerged because of lack of ear formation and growth. Although silk was emerged, it was not fertilized because pollen was dissipated. 9. Shading during the vegetative growth stages of corn resulted in short plant height, reduced number of brace roots, and lodged plant. Shading after silking promoted the leaves to mature and resulted in reduced weight of 100 grains weight and grain yield. 10. The level of light intensity that can induce normal silking and fertilization was over 40 Klux. However, below this level the grain yield decreased significantly as light intensity decreased. It was difficult to expect any grain yield below 31 Klux. Based on the meteorological data obtained during the past 31 years, it was found that such a low level of light intensity occurred every 10 to 15 years.

고속거리계전 알고리즘의 하드웨어 검증

홍정기 명지대학교 대학원 2002 국내석사

본 논문은 실제의 하드웨어 보드(DSP : Digital Signal Processor 보드)를 이용한 거리계전기의 구현에 대해 다루고 있다. 계전기의 동작 시간을 최소화하기 위해 최소 데이터 윈도우에 의해 사고를 추출할 수 있는 최소자승법을 계전 알고리즘으로 사용하였으며 최소 과도 응답시간을 가지는 최소정착 시간 필터를 사용하였다. 실험 대상으로 사용한 계전기는 DSP(TMS320C32)를 메인 프로세서로 사용하고 있으며, 아날로그 신호의 분해능을 높이기 위해 14bit의 ADC(Analog to Digital Converter)를 사용하였다. 본 논문에서 제시한 알고리즘인 최소자승법에 의한 계전기 알고리즘의 성능을 보이고자 직교변환법에 의한 계전기 알고리즘과 차단 시간을 비교하였으며, 계전기 알고리즘이 탑재된 실제 하드웨어에 의한 계전기의 동작 성능을 보이기 위해 소프트웨어 시뮬레이션 결과와 비교하였다. In this paper a method for implementing a digital distance relay using an actual hardware circuit board (DSP: Digital Signal Processor) is introduced. To minimize the relay's operation time, a relay algorithm based on least mean squared error method to extract faults within a minimal data window is used A new design concept for a low-pass filter is also proposed to minimize the transient response time. For the main processor of the relay used in the experiment, a DSP chip (TMS320C32) is used A 14 bit ADC (Analog to Digital Converter) is used to increase the resolution of the analog signal. This paper describes the analysis of the high speed digital distance relaying algorithm in comparison with the Discrete Fourier Transform method and proposes its implementation method using hardware in an actual digital relay.

엽록체 DNA 염기서열에 의한 한국산 백합목(Liliales)의 분자계통

홍정기 대전대학교 대학원 2010 국내석사

Liliales is comprised up to 1300 species of 76 genera from 10 families in the world. Approximately 50 species of 18 genera from 4 families are distributed in Korea. Liliales is generally recognized as well supported monophyletic group by glands in perianth and extrose anthers. This study aims to define the phylogenetic relationships of Liliales and to confirm the monophyly of Liliales based on chloroplast DNA sequences data. Among the taxa of Liliales, Colchicaceae, Liliaceae, Melanthiaceae, Smilacaceae are monophyletic. And Liliales has grouped by three members in this study such as (1) Liliaceae+Smilacaceae+Rhipogonaceae+Philesiaceae clade (2) Melanthiaceae clade, and (3) Colchicaceae+Alstroemeriaceae+Luzuriagaceae+ Campynemataceae clade. Aletris which has been involved in Melanthiaceae(Melanthiales) by Dahlgren et al. (1985) is needed to be recircumscribed into Nartheciaceae(Dioscoreales) based on this study. And Trillium and Paris (Trilliaceae) which were regarded as independent family by Farmer (2006) are needed with Melanthiaceae s. l. by Fuse and Tamura (2000) and this study. And Tricyrtis and Streptopus are included in Liliaceae. The matK and rbcL genes were useful to resolve the phylogenetic relationships in Liliales, but rpoC1 1F-4R region was not useful to resolve the phylogenetic relationship in Liliales. The atpF-H intergenic spacer was less useful to resolve the phylogenetic relationship in Liliales. But the atpF-H intergenic spacer might be useful to resolve the phylogenetic relationships among the families in Liliales. The trnH-psbA intergenic spacer might be useful to resolve the phylogenetic relationship under family or subfamily levels.

교육대학교 체육 심화과정 학생들의 관심사

홍정기 경인교육대학교 교육대학원 2005 국내석사

Dunaliella tertiolecta의 지방산 조성에 미치는 이산화탄소의 영향

홍정기 인하대학교 대학원 2012 국내석사

미세조류를 배양하는 것은 온실가스를 절감하고 화석연료 부족 문제를 해결할 수 있는 기회를 준다. 미세조류의 성장에는 빛에너지, pH, 이산화탄소, 그리고 영양분 공급과 같은 다양한 인자가 영향을 미친다. 이러한 인자들 중, 이산화탄소는 미세조류가 이용할 수 있는 유일한 탄소원이며 광합성을 하는데 이용된다. 이산화탄소는 수용액에 용해된 형태로 미세조류가 섭취므로 광생물배양기에서 이산화탄소를 효율적으로 전달하는 것은 매우 중요하다. Dunaliella tertiolecta는 해양 녹색 편모충류이며 성장 속도가 빠르며 바이오 디젤을 생산할 수 있다. 다양한 이산화탄소 농도와 이산화탄소 공급속도를 변화시켜 Dunaliella tertiolecta UTEX LB 999를 배양하였다. 낮은 공급 속도와 낮은 이산화탄소 농도에서 더 높은 이산화탄소 흡수율을 보였다. D. tertiolecta의 성장속도에는 별다른 차이를 보이지 않았으나 이산화탄소는 미세조류의 성장기에 가장 많은 양을 흡수하였다. Palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid는 이산화탄소의 공급속도와 농도에 따라 영향을 받았다. 이산화탄소의 농도가 1%와 2% 일 때에는 지방산의 조성이 비슷하였으나 이산화탄소의 농도가 0.5%, 5% 일 때 지방산 조성의 변화를 보였다. 0.5% 이산화탄소의 농도에서 공급속도가 낮을 때 stearic acid의 비율이 높았고 5%의 이산화탄소 농도에서 palmitic acid의 비율이 linolenic acid의 비율보다 높았다. Cultivation of microalgae provides an opportunity to solve the risk of fossil fuel utilization and to decrease the greenhouse gas. The growth of microalgae is affected by various environmental factors such as light energy, pH, CO2, and nutrient supply. Among these factors, CO2 is the only carbon source for the growth of microalgae. Carbon dioxide serves as a source of carbon for photosynthetic cell culture. However, it must reside in the aqueous phase prior to uptake. This causes the change in pH of the media for microalgae cultivation. Consequently, the efficient delivery of carbon dioxide to the microalgae in photobioreactor is very important. Dunaliella tertiolecta is a marine green flagellate and fast growing alga. Dunaliella tertiolecta UTEX LB 999 was cultivated at various CO2 concentrations and flow rates. The carbon dioxide concentrations were 0.3%, 0.5%, 1%, 2% and 5%. The CO2 concentrations were decreased during the cultivation of D. tertiolecta. At low flow rate CO2 concentration of culture media was lower than that of high flow rate. The high flow rate of CO2 did not affect the growth rate of D. tertiolecta significantly. The CO2 was consumed more at exponential growth phase. The composition of fatty acid was affected by CO2 concentration and flow rate. The composition of fatty acid was similar at 1% and 2% CO2 concentrations. However, there was change in the composition of fatty acid at different CO2 concentrations. The fraction of palmitic acid in D. tertiolecta increased while that of linolenic acid decreased at 5% CO2 concentration.

초등학교의 교육본위 수업활동 탐색

홍정기 전남대학교 2006 국내박사

학교는 교육이 이루어지는 공간이어야 한다. 그러나 지금의 학교에서는 본질적인 교육현상이 점점 사라지고 있다. 학교의 비 교육화는 우리 교육의 발전에 저해가 될 것이다. 따라서 이 연구는 범위를 학교의 중심인 수업활동에 초점을 맞추어 현행 초등학교 수업이 갖고 있는 교육적 한계를 밝혀내고, 새로이 제안되고 있는 교육본위론의 관점에서 교육본위 수업활동을 탐색하고 그 사례를 찾아서 이를 근거 삼아 '초등학교 수업의 교육화' 를 위한 대안을 모색해 보려고 하였다. 기존의 수업활동은 기능주의 교육관, 심리학적 접근방법, 실증주의 인식론의 영향으로 인해 수업에서 교육의 본질이 사라지게 하는 결과를 초래하였다. 즉 기능주의 교육관은 학교에서 교육의 외재적 가치에 더 비중을 두고 교육을 전개하게 하였고, 교실 수업에 대한 심리학적 접근은 수업을 심리 현상으로 간주하게 하였으며, 현행 공교육의 특징인 실증주의 인식론과 이를 뒷받침하고 있는 객관주의 지식관은 수업을 학업 성취 위주의 주입식 교육으로 변화시켰다. 이러한 기존의 수업활동은 학생들로 하여금 비 교육적인 경험을 계속 반복하게 하였고, 심지어 교육의 각 주체들마저도 교육을 가치 없게 바라보게 하는 인식의 출발점 역할을 하였다. 이러한 현행 초등학교 수업의 문제점 극복을 위한 대안으로 연구자는 이용남(2005)이 제안한 '내재적 교육목적 및 목표, 상구자의 특성, 교육본위 교육활동, 교육본위 교육평가' 모형에 '교육소재의 선정과 배열' 과정을 첨가하여 좀 더 세분화 된 교육본위 수업활동 모형을 제안하였다. 그리고 그에 앞서 상황학습이론, 구성주의 교수이론, 의사소통이론, 교화의 철학을 새로운 대안적 모형의 이론적 근거로 제시하였다. 또한 새로운 교육본위 수업활동 모형 적용을 위한 실천적 정당성과 그 가능성을 확인하기 위해 현행 초등학교 수학과, 체육과 교육과정에 편성된 교육소재인 자연수의 덧셈과 뺄셈, 기계체조 운동에서 나타날 수 있는 교육본위 수업활동을 탐색하였다. 그 결과, 초등학교 수업활동의 핵심적 요소들을 재 구조화할 수 있었다. 그리고 연구자는 이 핵심적 요소들을 바탕으로 수업활동 당사자들의 역할에 대해서도 제시하였다. 먼저, 교육본위 수업활동의 첫 번째 요소인 '내재적 교육목적과 목표' 설정 단계에서는 교육의 내재적 목적과 가시 목표 설정의 중요성을 확인할 수 있었다. 그리고 두 번째 요소인 '교육소재의 선정과 배열' 단계에서는 실생활과 관련된 흥미로운 교육소재의 선정과 순차적 배열의 중요성을 확인하였다. 또한 세 번째 요소인 '상구자의 특성' 파악 단계에서는 상구 열정 및 상구자 현품의 중요성에 대하여 알 수 있었다. 여기에서는 상구 열정을 발현시키고 유지하는 방법과 상구자의 현품 파악을 위한 중간 목표 달성도 진단법 및 문항에 대한 상호 면접을 제안하였다. 네 번째 요소인 '교육본위 수업활동' 단계에서는 교육소재를 통한 상구 활동과 하화 활동이 어우러진 협동교육의 중요성을 알 수 있었다. 이 단계에서는 상구와 하화 활동의 길잡이 역할을 하는 교과교육의 중요성도 포함시킬 수 있었다. 마지막 다섯 번째 요소인 '교육본위 교육평가' 단계에서는 각 교육 주체의 자증과 타증에 의한 스스로의 주관적 평가의 중요성을 확인하였다. 결론적으로, 이 연구 결과의 가치는 교육 주체들의 적용 및 실천 여부에 달려 있다. 교육의 당사자들이 교육본위 수업활동 모형을 교실 수업에 적용시켜 나간다면 이 논문의 지향점인 초등학교 수업의 교육화는 더 가깝게 다가올 것이다. The school should be the place where education takes place. However, educational phenomena have disappeared due to influences of areas other than education in the present school conditions. Therefore, this study reveals educational limitations of current elementary classroom instruction and explores education-oriented activities from the views of the education-oriented intrinsic principles which are newly suggested. The functionalistic view of education in the existing classroom instruction focuses on the extrinsic value of education, and the psychological approach to classroom instruction considers classes as psychological phenomena. And the positivistic epistemology which is the greatest characteristic of current public education and objectivistic paradigm supporting it changes our classroom instruction into a cramming system of education. Such an existing classroom instruction makes students repeat non-educational experiences, and it makes the starting point of considering education as valueless by each educational subject. This study suggests a new model of instruction which consists of 'intrinsic educational goals and objectives, selection and arrangement of educational materials, grasping ascending educator's characteristics, intrinsic education-oriented activities, and intrinsic education-oriented evaluation' as an alternative of the current classroom instruction. This study draws validity of the alternative model from situated learning theory, constructivistic instructional theory, current communication theory, philosophy of edification. In addition, this study is applied to cases from mathematics and physical education of elementary school in order to get practical validity of applying the alternative model. It also suggests the roles of the ascending educator and the descending educator who are two participants of intrinsic education-oriented activities. Results of this study are suggested as follows; First, the intrinsic goals and visible objectives(ends-in-view) take the first place of intrinsic education-oriented activities. Following is the selection and arrangement of educational materials. The next important elements are ascending educator's passion and his or her present transtalent. The cooperative education harmonizing ascending and descending activities with educational materials follows. Subjective evaluation by each educational participant is the last important element. In conclusion, the value of research results depends on application and practice of educational subjects. That is, if educational subjects apply intrinsic education-oriented activities to classroom lesson, 'the educationalization of elementary classroom instruction' which is the orientation of this study will be achieved sooner or later.

問題行動豫防策으로 免疫效果

홍정기 全南大學校 敎育大學院 1984 국내석사

The purpose of this research is to investigate the inoculation effect as a way of preventing middle school students' problem behavior. According to the result of investigation into attitude of male students in the secondary grade toward the electronic game room, 110 students who responded negatively were randomly assigned to the inoculation group (n=20), supportive information group (n=20), self-training group (n=20), comparison group (n=25), control group (n=25), and their attitudes toward the electronic games room were measured on 21 pint scace before and after the treatments, when immunity group was provided with immunity information, they had to refute the information for themselves, and they wrote down the contents of their refutation on papers, and self-training group considered why they should not go to the electronic game rooms and wrote down the reason, and supporting group was provided with the supporting information and arranged it. In three days after the experiment was conditioned respective of each groups, three experiment groups and a comparative group were provided with strong refutation information about their earlier condition, and in two days the attitude of each group toward the electronic game room was measured in term of 21 mean criteria. The homogeneity of five groups was recognized by analysis of covariance, and statistically the result of T tests for post-test means represented more significant increase of supporting group and self-training group than of immunity group in attitude toward the electronic game room. This fact suggests that immunity group is more controlled than supporting and self-training group in preventing problem behavior. However, as the attitude quantity of immunity group was compared with comparative groups, there was not significant difference between them. The significance of this research consists in trying to apply the research of McGuire and papageorgis into the immunity effect to preventing the problem behavior of students.

웨이트 트레이닝이 프로농구선수의 슬관절과 요부관절의 근기능에 미치는 영향

홍정기 한국체육대학교 1999 국내석사