봉지종류 및 괘대시기가 ‘원황’ 및 ‘화산’ 배 과실의 수확기 품질에 미치는 영향

정억근,이욱용,안영직,이혁재,황용수,천종필 충남대학교 농업과학연구소 2013 농업과학연구 Vol.40 No.2

We tested fruits quality and skin coloration of two pear cultivar ‘Wonhwang’ and ‘Whasan’ produced by bagging with different kinds of paper bags in the Cheonan area, Chungnam Province, Korea. The fruits were bagged at 35, 45, 55 or 65 days after full bloom (DAFB) with 3 kinds of double layer paper bag which consisted of grey color, yellow color and newspaper for outer layer. The great extent of light interruption was observed in grey colored outer paperbag among three kinds of paperbag which showed only 0.46% of lowest light transmittance when compared with 43.7% and 40.0% of yellow paper and newspaper, respectively. The development of skin redness (a*) increased with the delay of bagging time in two pear cultivars. But the fruits treated at 65 DAFB showed uneven coloration and excessive development of redness which represented low fruit external appearance value. Uniform flesh firmness was attained at the fruits bagged with grey outer color paperbag regardless of bagging time, although the fruit quality indices including soluble solids and titratable acidity did not change significantly by using different kind of fruit bags and bagging time in two pear cultivar. Based on our results, it was explained that the grey-colored fruit bag had positive effect on the development of skin coloration without any detrimental effect on fruit quality factors in ‘Wonhwang’ and ‘Whasan’ pears.

Spring鋼의 熱處理가 疲勞强度에 미치는 影響에 關한 硏究

李龍鎬,李榮根 弘益大學校 1984 弘大論叢 Vol.16 No.2

The SUP-9A steel had got its untempered martensite structure by oil quenching after austenitizing at 850℃, 40min. The writer, then, examined the effect of tempering temperature on the mechanical properties and the fatigue limits in SUP-9A steel at each tempering temperature 100℃, 200℃, 300℃, 400℃, 500℃, and 600℃. The results from this examination were as follows: (1) Hardness and tensile strength were decreased as tempering temperature increased, and the more tempering tempreature increased, the more its impact absorbed energy and elongation did. (2) Fracture in tensile-test specimens produced the curved radial marks as tempering temperature increased, and the final fatigue fracture region moved toward the center of the section as the nominal stress increased. (3) Microstructure took spherical and coarse form of carbide particles as tempering temperature increased. (4) Full width of half maximum intensity of martensite(211) plane was decreased by increasing the tempering temperature. (5) The highest fatigue limit appeared at the tempering temperature 400℃.

칠게(Macrophthalmus (Mareotis) japonicus De Haan)의 腸上皮의 徵細構造 및 組織化學的 硏究

延近聖,盧鏞泰 建國大學校基礎科學硏究所 1987 理學論集 Vol.12 No.-

칠게(Macrophthalmus(Mareotis) japonicus De Haan)의 腸上皮에 대한 走査電子顯微鏡, 透過電子顯微鏡的 觀察과 粘液質에 대한 性狀을 組織化學的으로 밝히고자 Haematoxylin-Eosin 염색, Periodic acid-Schiff 반응, Alcian blue pH 2.5와 0.4염색, Aldhyde fuchsin pH 1.7염색 및 Aldehyde fuchsin pH 1.7-Alcian blue pH 2.5염색을 시행하고 분석한 결과 다음과 같은 결론을 얻었다. 1. 中腸과 後腸의 길이의 대비는 약 1:4정도였다. 2. 中腸에는 얇은 粘液層이 덮인 가운데 上皮細胞의 頂端面은 細胞膜의 많은 灣入을 이룬 내측에는 미토콘드리아가 집중적으로 밀집하고 있었으며 가끔 全分泌細胞의 분비현상이 나타나고 있다. 3. 後腸에는 두꺼운 키틴질층이 腸腔에 면하고 있는 上皮表面을 덮고 있으며 키틴질의 表層에서는 2μm∼15μm에 이르는 돌기들이 部位에 따라 수와 분포양상을 달리하며 모두 뒷쪽을 향해 나있어 後腸壁에 발달한 근육층의 운동에 의한 물질의 後送을 도와주는 것으로 보였다. 4. 後腸上皮의 頂端細胞膜에서는 다소 작으나마 細胞膜의 많은 灣入과 그 내측에 밀집된 미토콘드리아의 분포가 막의 활발한 투과력을 보여주었으며 많은 분비과립의 분비를 볼 수 있었다. 5. 幽門胃壁을 덮고 있는 粘液質은 表層에 中性粘液質과 약간의 sialomucin을 포함한 sulfomucin으로 되어 있었고 內層은 약간의 中性粘液質에 sialomucin으로 되어 있었으며 內層 粘液質은 中性粘液質과 sialomusin만으로 되어있다. 6. 中腸은 中性粘液質에 약간의 sulfomucin이 섞인 상태이며 sialomucin은 전체적으로 나타나지 않았다. 7. 後腸은 中性粘液質이 sulfomucin보다 우세하게 섞여있는 상태였고 sialomucin은 역시 나타나지 않았다. The study on the ultrastructure, scanning electron microscopy and histochemical analysis was performed to the shore crab (Macrophthalmus (Mareotis) japonicus De Haan)(Crustacea, Decapoda). For the chemical study, haematoxylin-eosin staining, periodic acid-Schiff reaction, alcian blue pH 2.5 and pH 0.4 staining, aldehyde fuchsin pH 1.7 staining and aldehyde fuchsin pH 1.7-alcian blue pH 2.5 staining were carried out. The general types of mucosubstances detected were identified as neutral mucosubstance, sulfomucin and sialomucin. The results were as follows. 1. The length of midgut was approximately one-fifth of the total length of the mid and hind gut. 2. The midgut epithelium was covered with thin layer of mucosubstance. The epithelium in the apical border formed striated border under which the mitochondria(M) concentrated with high density. Holocrine cells could often be seen. 3. Hindgut epithelium lined by a chitinous layer which had a number of spines grouped linear arrangement numbered from a few to about thirty extruding from the upper part of the lining which directed posteriorly. The spines seemed to make the fecal substances move afterward easily by the densely distributed muscular movement of the gut. 4. The apical border of the hindgut epithelial cells appeared striated short under which the concentrated mitochondria were seen. Secretory granules scattered outside the cell membrane. 5. The upper chitinous layer of the epithelium of the pyloric stomach contained neutral mucosubstance and sulfomucin with a little amount of sialomucin. The lower chitinous layer of the epithelium consisted of a neutral mucosubstance and sialomucin. Sulfomucin was absent. 6. The midgut epithelium covered with a thin mucous layer consisted of a neutral mucosubstance with a some sulfomucin. Sialomucin couldn't be identified. 7. The chitinous layer of the hindgut epithelium showed a strong PAS positivity and fuchsinophility, and no alcianophility. It appeared to had a mixture of neutral mucosubstance and sulfomucin.

통일언어철학을 어떻게 세울 것인가?

고영근 경희대학교 민속학연구소 2000 한국의 민속과 문화 Vol.3 No.-

Before the Liberation, Korea had a language policy conforming to the hermeneutic language philosophy. South Korea kept the same philosophy after the Liberation, but it was different in North Korea. They accepted a new language philosophy tuned to Marx's dialectical materialism and have controlled the language policy based on Chuche language philosophy since late 1960's. With Chung-Il Kim as a new leader it remains almost the same. The only difference is that in the Sung-Il Kim age they were affected by materialism and took the language for the tools for construction and revolution while they now regard it as rules which reconstruct men as well as the society and nature. The hermeneutic language philosophy and Chuche language philosophy cannot be easily compatible, since idealism and materialism are confronted concepts. But if they step aside for coordination, they might result in a unified language philosophy. Generally speaking, South Korea has mainly been interested in theoretical problems rather than practical problems. On the other hand, North Korea gave priority to practical problems and made considerable achievement in the language purification. But there were some schools of South interested in the language purification and North Korea also had an experience of digging into theoretical problems till mid 1960's. If north and South accept each other's merits and integrate dialectically, we can frame a unified language philosophy. Meanwhile North and South have neglected the Chinese characters thus far. I think this is undesirable for the inheritance of tradition and the independent development of the Korean language. It may be emphasized that before we frame a unified language philosophy we should have Chinese characters and English alphabets coexit together at the subordinating position while we prioritize the Korean language and writing system.

신경회로망 제어기를 이용한 스마트 구조물의 능동 진동제어

박용군,차일남 서울産業大學校 1995 논문집 Vol.42 No.1

본 논문에서는 압전필름을 특징으로 하는 스마트 구조물의 동적 모델링과 능동 진동제어를 수행하였다. 먼저, 압전필름을 복합재료판의 상하면에 각각 액튜에이터와 센서로 부착하여 스마트 구조물을 제작하였다. 그리고 동적 모델링을 압전필름의 액튜에이팅 특성과 구조물의 에너지를 적용하여 실시한 후, 신경망회로와 슬라딩모드 제어 개념을 연계한 신경 슬라이딩모드 제어기를 제안하였다. 한편, 시물레이션과 실험적 구현을 통해 과도진동과 강제진동에 대한 능동 진동제어를 수행하여 제시된 동적 모델링과 제어방법론의 타당성을 입증하였다. This paper presents dynamic modeling and vibration control of smart structures featuring piezoelectric films(PFs). A smart structure is firstly constructed by perfectly bonding two PFs on the upper and lower surfaces of host material structures (glass/epoxy) as an actuator and a sensor, respectively. Adoption Hamilton's principle with PF actuating dynamics, a governing equation for the lateral motion and associated boundary conditions are obtained. Furthermore, a neural network controller so called neuro-sliding mode controller(NSC) is fabricated to perform vibration control of the smart structure. The effectiveness of the methodology on dynamic model and control strategy is demonstrated by achieving vibration performances through numerical simulations and experimental implementations in both the transient and forced vibrations.

전두부 골절 환자의 임상적 연구

조용민,이동근,오승환,장관식,한대희,민승기 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.1

Fracture of frontal bone is infrequent, but may have serious complications because of their proximity to the brain, eyes and noses. Fractures of the frontal area range from 5% to 15% of all facial bone fracture and include supraorbital rim and frontal sinus. As frontal bone fractures most frequently occur in the multiply injured patient, a thorough clinical and radiological examination of the patient is required before diagnosis and treatment plans are established. Sometimes coorperative treatment with other department is requried. It is specially considered that incision for access to frontal region and surgical methods for open reduction, cranialization, cannulization, sinus obliteration. After surgical or conservative treatment, it may have complication. Complication of frontal bone injury vary in severity and may occur at several years after the incidents. The major types of complications are those that occur directly at the time of injury, infection and chronic problems. This is clinical study on 31 patients with frontal bone fracture, at department of oral and maxillofacial surgery in dental hospital of Wonkwang university during past ten years. The results were as follows : 1. The sex ratio of all patients is 29 (94%) male to 2 (6%) female, the average age is 33 and the prominent groups are 2nd, 3rd decade age. 2. The causative factors are mostly traffic accident 22 cases (70%) and fall dawn, industrial accidents, so on. 3. The 17 cases has shown alert mental status, but neurologic problems is in 14 (45%) cases in initial accessment. 4. Associated facial bone fractures are prominent in the maxilla (42%) and panfacial fracture (39%). 5. Involved general problems are in department of neurologic surgery problems (65%), orthopaedic problems (23%) and ophthalmologic problems (19%) in order. 6. Open reduction has done in 15 cases and 16 cases with conservative management. 7. Postoperative complications are chronic headache (42%), esthetic problems (39%) and ophthalmologic problems (35%)in order.

골프지도자의 직무특성이 직무만족도에 미치는 영향

이종근,지용석,정희석 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.20 No.1

The purpose of this study is to examine the job satisfaction of the job characteristics of golf instructors and to investigate the important factors affected by that. To achieve this purpose, 300 leaders who are certified semi-pro among golf leaders throughout the country are selected as the population, but the questionnaires from 274 subjects are adopted for the data of the final analysis. And this thesis attempts to use the way of Correlation Analysis and Covariance Structure Analysis using LISREL, as a statistical method to verify an established hypothesis. The results have processed through the analysis are summarized as follows. First, the determinative variables, such as the challenge for job, the suitableness for job, the security for work, the utility expected for job and the variables satisfying expectation have had a positive influence on the occupational commitment of golf instructors, but job challenge, amount of duty, and the need for achievement have had a negative effect on that. Second, the determinative variables, such as job suitableness, job security and expected utility, and the variables satisfying expectation have had a positive influence on the occupational contentment, but job challenge, amount of duty, and the need for achievement have not affected on that. On the other hand, the control variable which is their marital status also has been exercised a positive influence on the job satisfaction.

자생 차(Camellia sinensis L.)의 육묘 방법에 관한 연구

이용호,이종성,강남대,송근우,강동주,고영옥,정대수 동아대학교 2001 大學院論文集 Vol.26 No.-

These experiments were conducted to studies on methods raising seedling in Native Tea Trees(Camellia sinensis L.). this experiment was conducted for 2years from 1999 to 2000 in Kyeongnam Provincial Rural Development Administration(R.D.A) The results were summarized as follows: 1. Germination percentage, mature seedling percentage, tiller, leaf number, leaf length and dry weight become higher Cup Pot Φ16cm treatment plot, plant height and leaf area was high some Net Pot Φ15cm treatment plot. 2. The growth of underground and aboveground show a good result all Cup Pot Φ16cm treatment plot. 3. The T/R rate of Cup Pot Φ16cm treatment plot were found 100% and Cup Pot Φ15cm treatment plot were found 114%. 4. The economic gains become higher Cup Pot Φ16cm.

學習障碍 槪念에 대한 理論的 接近

李槿溶 大邱大學校特殊敎育硏究所 1985 特殊敎育硏究 Vol.12 No.-

Though “learning disabillities”was lately established as an area of special education, the concepts of it are not new and the term has been used in applying to many other disabilities. The comprehensive and significant concepts of LD have not been established, and many theoretical approaches to the concepts of LD have been criticized for their lack of well-defined concepts. The weakness of the theoretical roles have been criticized in aspects of (1) the single factor or concept of LD (2) the different views among LD specialists and (3) the narrow-mindedness and isolation of the theories. Many theories of LD have been presented to established precise concepts. Adelman (1971) presented the interactional model and emphasized interactional functions among strengths, weakness and limitation including specific learning situational factors. Senf's information-integration theory is based on the cognitive psychology. The importance of this theorty has been accepted because it explains the complicated cognitions of human beings by means of information-processing approach. Satz and Nostrand focused on the change of the development of children's abilities, linguistic abilities and reading achievement. Ross (1976) inferred that the abilities of selective attention are the major factors to discriminate learning disabled children from normal children. Torgesen (1975) presumed that learning disabled children are inactive learners, and vellutino (1977) hypothesised that poor readers are not able to use linguistic cues because they are lack of the information about the labeling of words. Wiener and Cromer (1967) presented hieratical modle and explained reading disabilities with the hieratical causal relations. Because the characteristics of LD are very complicated, it is very difficult to establish the concepts of LD solely with a specific theory. We should concern about the cause of LD to prevent and to treat it, and should plan efficient programs on the basis of their behavioral characteristics. Presently, many Specialists are trying to approach the cognition-behavior psychological aspects of LD. It is believed that we'll be able to obtain concrete concepts of LD, when we approach it under a multidisciplinary system and try to combine them efficiently into connection with psychological areas.

문제해결과 문제설정수업

김용기,김용균 동국대학교 교육연구원 2000 교육문제연구 Vol.15 No.-

In view of the result of this study, when we try to adapt the to adapt the method of 'Problem Posing", we can find it is desirable to teach the students by different methods according to students' learning ability. The reason for the necessity of the teaching-learning of the teaching-learning of problem posing is as follow First, teaching-learning by problem posing can stimulate the students' interest in Mathematics and them have the self-confidence if ti, Secondly, teaching-learning of problem posing is helpful to raise the mathematical ability by having the chance to think, on the other hand we can suppose many advantages like this; 1)Problem posing class gives the students the chance to evaluate themselves. 2)By seeing the other's presenting, the students themselves can take part in class without having burden from the positive response to know the unthinking part. 3)The students will be able to feel some what self-confidence and find by themselves worth things by truing to solve problems, we will have to lead the students to change a problem style in to more generalized one. or to set a series of studying in order to solve many problems for themselves in a new situation. this problem posing class could be said with more positive effectiveness than present explanatory class. the students will have to take a problem posing lesson, trying to make the problems on the basis of the mathematical thinking. Among these classified problems, several effective problems are picked up in order to ask and discuss in a class. Through having a series of learning process like this, the students will be interested in learning, and have to motive to learning of mathematics. We can find the desirable aspects leading the interest toward mathematics study and the improvement in grades.