有機性 廢棄物이 田土壤改良 및 大豆와 大麥收量에 미치는 影響

金武成,盧泳德,許奉九 慶熙大學校 1987 論文集 Vol.16 No.-

A field experiment was carried out to find out the effects of various organic matter resources on the improvement of soil physico-chemical properties and crop yields. Rice straw, compost and byproduct amino acid fermentation were applied to sandy loam and silty clay loam. Barley and soybean were cultivated under different fertilizer levels, conventional and integrated improvement. and several soil physico-chemical properties and crop growth were investigated. Soil physical properties such as bulk density, hardness and air permeability were improved by organic resources application. Soil organic matter increased with application of rice straw, compost and byproduct amino acid fermentation at silty clay loam and sandy loam. Yields of soybean and barley were highly correlated with porosity, bulk density, hardness, air permeability and water stable aggregates of the soils. Soybean yield was increased by 13-20% at sandy loam, 33-67% at silty clay loam respectively. Barley yield was also increased by 1-13% at sandy loam, 4-20% at silty clay loam respectively.

산술에서 대수로의 이행 과정에서 나타나는 장애에 관한 연구

송영무,양두례 順天大學校 師範大學 附屬 科學敎育硏究所 1996 科學과 敎育 Vol.4 No.-

A variety of difficulties in the learning of algebra are caused by overlooking obstacles emerging in the process of shifting from arithmetic to algebra. However, the studies focused on the transition from arithmetic to algebra are not so many, although children's earlier experiences of arithmetic play an important role in their studying mathematics in high school. There is a fundamental relation between the difficulties that students feel in the learning of algebra and the experiences that they acquire in the learning of arithmetic. There are some arithmetic knowledges that give rise to obstacles in the learning of algebra, although the greater part of them are useful. From this point of view, in this paper, we set up seven types of obstacles that emerge in the transition from arithmetic to algebra, and present teaching methods about these types of obstacles.

도시지역 지하수 오염취약성 평가방법의 적용성 연구

함세영,김무진,강래수,정재열,차용훈,장성 부산대학교 환경문제연구소 2003 環境硏究報 Vol.21 No.-

According to favorable water quality, groundwater is used as subsitutive water resources for surfare water. However, groundwater is contaminated more and more due to industrialization and population increase. This study assesses groundwater vulnerability to contaminants in 12 dongs (administrative districe) of Changwon city using with DRASTIC. DRASTIC was originally applied to the situations that contamination sources are on ground surface, and contaminants flow into groundwater with infiltration of rainfall. In addition to DRASTIC factors, groundwater contamination in urban area is also related with overpumping and with lowering of water level. Correlation coefficient between mumimum values of DRASTIC index and unfitness rate to drinking water quality for 10 dongs is low as 0.40. On the contrary, the correlation coefficient between minimum values of DRASTIC index and groundwater discharge rate and that between minimum values of DRASTIC index and well distribution density are 0.70 and 0.87, respectively. Thus, to evaluate the potential of groundwater contamination in urban areas, it is necessary to consider other factors such as groundwater abstraction rate and well density per unit area with ratings and weights as well as existing six DRASTIC factors.

有機性 廢棄物이 田土壤改良 및 大豆와 大麥收量에 미치는 影響

金武成,盧泳德,許奉九 경희대학교 부설 식량자원개발연구소 1987 硏究論文集 Vol.8 No.-

廢棄 有機物資源인 生藁, 堆肥 및 有機質粕을 砂壤土와 微砂質 埴壤土에 施肥水準을 달리하여 大麥과 大豆를 栽培하면서 土壤의 物理化學性 變化와 作物生育을 調査하였다. 有機物資源 施用으로 土壤의 假比重, 孔隙率, 硬度, 通氣性 等 物理性이 對照區에 비하여 改善되었으며 試驗後 土壤의 有機物含量은 有機物資源 施用으로 增加되었는데 그 效果는 生藁區와 堆肥區에서 顯著하였고 土性別로는 砂壤土보다 微砂質 埴壤土에서 높았다. 大豆와 大麥의 收量은 土壤의 孔隙率, 假比重, 硬度, 通氣性 및 耐水性 粒團 等과 높은 相關이 있었으며 有機物 施用으로 大豆 收量은 砂壤土에서 134-20%, 微砂質 埴壤土에서 33-67% 增收 되었고 大麥 收量은 砂壤土에서 1-13%, 微砂質 埴壤土에서는 4-20% 增收되었다. A field experiment was carried out to find out thA field experiment was carried out to find out the effects of various organic matter resources on the improvement of soil physico-chemical properties and crop yields. Rice straw, compost and byproduct amino acid fermentation were applied to sandy loam and silty clay loam. Barley and soybean were cultivated under different fertilizer levels, conventional and integrated improvement, and several soil physico-chemical properties and crop growth were investigated. Soil physical properties such as bulk density, porosity, hardness and air permeability were improved by organic resources application. Soil organic matter increased with application of rice straw, compost and byproduct amino acid fermentation at silty clay loam and sandy loam. Yields of soybean and barley were highly correlated with porosity, bulk density, hardness, air permeability and water stable aggregates of the soils. Soybean yield was increased by 13-20% at sandy loam, 33-67% at silty clay loam respectively. Barley yield was also increased by 1-13% at sandy loam, 4-20% at silty clay loam respectively. e effects of various organic matter resources on the improvement of soil physico-chemical properties and crop yields. Rice straw, compost and byproduct amino acid fermentation were applied to sandy loam and silty clay loam. Barley and soybean were cultivated under different fertilizer levels, conventional and integrated improvement, and several soil physico-chemical properties and crop growth were investigated. Soil physical properties such as bulk density, porosity, hardness and air permeability were improved by organic resources application. Soil organic matter increased with application of rice straw, compost and byproduct amino acid fermentation at silty clay loam and sandy loam. Yields of soybean and barley were highly correlated with porosity, bulk density, hardness, air permeability and water stable aggregates of the soils. Soybean yield was increased by 13-20% at sandy loam, 33-67% at silty clay loam respectively. Barley yield was also increased by 1-13% at sandy loam, 4-20% at silty clay loam respectively.

轉換社債 發行의 情報效果에 관한 硏究 : 韓國 株式市場에서의 實證分析

金永茂 조선대학교 경영경제연구소 1996 經營經濟硏究 = Management and economics research Vol.19 No.1

라그랑즈 정리의 역에 관하여

송영무,한상진 순천대학교 과학교육연구소 2000 科學과 敎育 Vol.8 No.-

One of the most important combinatorial results in finite group theory is the theorem of Lagrange that says the order of any subgroup divides the order of the group. The full converse to Lagrange's Theorem is not true, but there is a partial converse which holds for arbitrary finite groups. In this note, we shall try to give a sound understanding of the meaning of the converse of Lagrange's Theorem and some examples of its application.

여대생 선수와 비선수의 신체조성 및 호흡순환기능에 관한 연구

백영호,황영성,이광무 釜山大學校 附設 體育科學硏究所 1993 體育科學硏究所 論文集 Vol.9 No.-

The purpose of this study was to evaluate a study on body composition and cardiorespiratory function in female university athlete and non-athlete. The subjects were included 2 groups(each group n=8): athlete group, non-athlete group. Body weight, skinfold thickness, body fat%, breath frequency, ventilation, and oxygen uptake were measured for the value of measurement. The conclusion of this study was as follows: 1. Body composition 1) No significant difference on body weight was found between athlete group and non-athlete group. 2) Athlete group marked significantly low triceps and suprailiac skinfold, % fat and fat mass values when comparing with non-athlete group(p<0.05). 3) Athlete group marked significantly high lean body mass values when comparing with non-athlete group(p<0.05) 2. Cardiorespiratory Function 1) Athlete group marked significantly how heart rate at rest when comparing with non-athlete group(p<0.05). 2) No significant difference on heart rate at recovery, breath frequency and ventilation was found between athlete group and non-athlete group. However athlete group marked significantly high oxygen uptake(ml/kg/min) when comparing with non-athlete group(p<0.01). 3) Athlete group significantly marked low heart rate and breath rate at recovery when comparing with non-athlete group(p<0.05), but no significant difference was found between athlete group and non-athlete group on ventilation, oxygen uptake at recovery.

공업계 고등학교에서의 수학교과와 전문교과와의 연계성에 관하여 : 7차 교육과정을 중심으로 Focusing on the 7th mathematics curriculum

宋英武,崔現植 順天大學校 師範大學 附屬 科學敎育硏究所 2002 科學과 敎育 Vol.10 No.-

It seems that it is critical to comprehend mathematics as a tool subject in order to understand a number of calculations in the professional subjects in th Industrial or Vocational Highschool. But, 'Math' subject in the industrial high school has not done very well for the followings; In the industrial high school, 1. So far, professional subjects and 'Mathematics' subject have been carrying out differently. 2. 'Mathematics' subject has been focused on entering the higher academic system, rather college or university as the normal high schools. 3. Industrial highschool students were by far poorer in Math's grades when they were in middle schools than those of the normal high schools. 4. The new 'Math' textbook of 7th educational reform curriculum is not considered in the light of relationship with professional subjects. For these reasons, it seems that a new attempt is necessary to study 'Math' subject while it maintains with relationship with professional subjects. In this study, we do analyze the relationship between professional subjects and 'Math' subject in the Industrial or vocational High school. In the end, we suggest that we should make new 'Math' textbook which reflects the reality and needs of the present Industrial or vocational high school students. In doing so, we hope that Industrial or Vocational high school students can get better grade of Math by identifying learning factors relating with 'Math' in the professional subjects, and that this study can help them learn professional subjects more efficiently.

남대 농구, 배구선수들의 훈련기간중 운동 피로가 뇨(尿)성분 변화에 미치는 영향

백영호,황영성,이광무 釜山大學校 附設 體育科學硏究所 1992 體育科學硏究所 論文集 Vol.8 No.-

The purpose of this study was to examine the effect of exercise fatigue during training terms on urine composition in male university basketball and volleyball athletes. Researchers took athletes' urine when he gets up, before A.M. exercise, after A.M. exercise, before P.M. exercise, after P.M. exercise and measured the urine composition through the experimental measurement. The results of this experiment were as follow: 1) In the urine pH, there was significant change for daily exercise in basketball and volleyball athletes(P<0.01). 2) In the urine glucose, there was no significant change for daily exercise. 3) In the urine protein, there was significant change for daily exercise in basketball and volleyball athletes(P<0.01). 4) In the urine occult blood, there was no significant change for daily exercise. 5) In the urine ketone body, there was no significant change for daily exercise. 6) In the urine bilirubin, there was no significant change for daily exercise. 7) In the urine urobilinogen, there was no significant change for daily exercise. 8) In the urine pH, occult blood, ketone body and bilirubin, there were no significant change for training terms. 9) In the athletes' urine glucose, there was significant change at before A.M. exercise for training terms(P<0.05). 10) In the athletes' urine protein, there was significant change at wake up and after P.M. exercise for training terms(P<0.05). 11) In the athletes' urine urobilinogen, there was significant change at wake up for training terms(P<0.05).

PDLC의 상 변환 특성

김영식,이영재,조무희 단국대학교 1996 論文集 Vol.30 No.-

Phase separated liquid crystal in PDLC(polymer dispersed liquid crystal) has a characteristic behavior of alignment by the external electric field. There are three kinds of methods for fabrication of PDLCs, PIPS(polymerization induced phase separation), TIPS(thermally induced phase separation),and SIPS(solvent induced phase separation). We have made PDLC samples by using the TIPS method and studied the characteristics of phase separation, We have used 5CB(K15), 8CB(K24), and 10CB(K30) as liquid crystal, and PMMA and PVEM as polymer. Phase separation characteristics according to the rate of temperature cooling were observed by a polarization microscope, and quantitatively measured by light scattering method.