전자계산기구조 학습을 위한 ITS 학습자 모듈의 설계

오필우,김도윤,김명렬 한국컴퓨터교육학회 2005 컴퓨터교육학회 논문지 Vol.8 No.2

미술 감상학습을 위한 웹기반 3D 시스템의 설계 및 구현

오필우,정상목,김명렬 한국정보교육학회 2005 정보교육학회논문지 Vol.9 No.4

7차 교육과정에서 추구하는 초등미술교육은 모든 학생이 화가가 되기를 바라는 것이 아니라 아름다움을 보고 느끼고 생활에 적용하여 보다 아름다운 생활을 가꾸어 갈 수 있는 심미적 인간 을 기르고자 하는 것이다. 즉, 감상활동의 중요성이 나타나 있다고 할 수 있다. 그러나 교육현장 특히 학원가를 중심으로 감상영역 보다는 테크닉 위주의 학습이 행해지고 있는 것이 현실이며 도서․벽지의 학생들이 갤러리와 같은 물리적 공간에서 감상학습을 한다는 것은 더욱이 어렵고, 기존의 감상 자료들이 텍스트 기반으로 소수의 학생들만이 공유할 수 있다는 단점을 해결하고자 본 논문에서는 인간 감각 형태와 가장 비슷하다고 할 수 있는 웹 기반의 3차원적 학습 패턴을 기본으로 하는 갤러리 형태의 감상 학습 자료를 제공하는 시스템을 설계 및 구현하였다. The art education in elementary schools pursued by the 7th education course is to nurture more aesthetic human who can live a more beautiful life by applying the beauty they felt and saw, rather than wishing all students to become artists. In other words, it emphasizes on the importance of appreciation activity. However, the reality is that technique-oriented learning is the main in the education field, especially around the academies, and appreciation learning is even more difficulty for students at physical spaces such as galleries who live inisland or distant countries. This study designs and materializes a system providing appreciation learning data in the form of gallery based on 3 dimensional learning pattern, which is similar to form of human senses, to solve the demerits of former appreciation resources being shared around a small number of students.

잣파종기고안시험

오필우 한국양묘협회 1983 韓國養苗協會誌 Vol.11 No.-

학생임원 선출 방법의 개선을 위한 모바일 전자투표 시스템

오필우,신수범,김명렬,Oh, Pill-Woo,Shin, Soo-Bum,Kim, Myeong-Ryeol 한국정보교육학회 2006 정보교육학회논문지 Vol.10 No.1

This paper is designed to search the new alternatives to supplement the inconvenience of the traditional written ballot method which is executed every early semester to select the class board at the school. It is prepared on the based the results of the design and implement of the wired/wireless inter-working mobile electronic voting system where the students can participate in the real-time class board selection and the decision-making utilizing the mobile phones, PDA and PC they commonly have. It is time when we should consider introducing the electronic voting system, to minimize the students' inconvenience and the subsequent missing class, having to wait in the long line in the designated place to select the class board at every election season. This system enables the students to participate wherever they are other than the common place as well. Further, this research will provide the opportunity to think over the new school election culture in line with the age of Ubiquitous, as well as the useful means in the field to promote the active participation of the parents and students in the students' self-administration, decision-making necessary at the schools.

학교 현장의 인권교육 실천 사례: 학생자치활동을 통한 갈등해결과 소통문화 만들기

이필우 한국법과인권교육학회 2010 한국법과인권교육학회 학술대회 Vol.2010 No.1

양버즘나무 ( Platanus occidentalis L . ) 팽장조직의 해부학적 특성

이필우(Phil Woo Lee),정연집(Youn Jib Chung) 한국산림과학회 1993 한국산림과학회지 Vol.82 No.1

The swollen tissue of wound origin formed after nailing c-shaped fastener to a stem of Platanus occidentalis L. was compared with normal tissue in the qualitative and quantitative anatomical aspects. The swollen tissue appeared to differ from normal tissue in irregular cell orientation, occurrence of tyloses in vessel element, less common appearance of pore multiples, narrower and shorter vessel element, lower vessel frequency, shorter and highly thick-walled wood fiber, greater number of bars per scalariform perforation plate in vessel element, larger ray frequency, larger ray width and lower ray height.

요소 및 석탄산수지 (石炭酸樹脂) 합판의 토란증량에 (土卵增量) 관한 연구

이필우,배영수 ( Phil Woo Lee,Young Soo Bae ) 한국산림과학회 1982 한국산림과학회지 Vol.57 No.1

This study was carried out to examine the possibility to replace imported wheat flour with taro. Taro and wheat flour were used for the extenders after oven drying(100±3℃)and pulverized into 80-100mesh minute powder by laboratory willey mill. Urea- and phenol-fromaldehyde resin adhesives were used for plywood manufacture, and the extending materials mixed with the extension at the ratio of 10, 20, 30, and 50% to each resin solution. The results obtained at this study were summarized as follows; 1) In dry and wet shear strength of urea-formaldehyde resin adhesive, taro showed very excellent bonding strength compared with wheat flour in all extending ration. Therefore taro showed the possibility that be usable to taro in place of wheat flour 2) In dry and wet shear strength of phenol-formaldehyde resin adhesive, in general, wheat flour showed higher bonding strength than taro. But in dry shear strength, taro showed higher shear strength than wheat flour in 30 and 50% extension.

졸참나무 지재 (枝材) 섬유에 관한 연구

이필우,엄영근 ( Phil Woo Lee,Young Guen Eom ) 한국산림과학회 1983 한국산림과학회지 Vol.60 No.1

According to the worldwide decreasing tendency in raw materials and increase in wood demands since 1970, the efficient utilization of raw materials was required internationally. Therefore this study dealt with the dimensional characteristics of branchwood fiber of Ouercus serrata Thunb for the complete utilization of whole tree. According to the branch individuals, parts and positions within a tree, fiber length, width and wall-thickness were measured. The results obtained are as follows: 1) As the height of individual branchwood increases from ground toward, fiber length and width, and wall-thickness decreased linearly and their regression equations obtained, were Y=770.03-22.643X, Y=27.444-0.71385X and Y=12.308-0.57320X respectively 2) From the main stem to branch in distal direction, fiber length, width and wall-thickness linearly decreased and their regression equations obtained were Y=752.70-0.6724X, Y=26.152-0.0084867X and Y=11.258-0.006205X, respectively. 3) As the radial direction from pith to hark increases, fiber length, width and wall-thickness increased linearly and their regression equations obtained were Y=679.73+11.231X Y=25.382+0.0925X and Y=10.521+0.11787X, respectively. 4) Mean value of fiber length, width and wall-thickness were 625-765, 26 and 11㎛, respectively.

내화처리 (耐火處理) 파티클보오드의 COMPLY 접착이 휨강도와 전단강도에 미치는 영향

이필우,권진헌 ( Phil Woo Lee,Jin Heon Kwon ) 한국산림과학회 1984 한국산림과학회지 Vol.64 No.1

This research was conducted to examine the effect of bonding on the bending and shear strength of COMPLY-board when used with meranti face veneer and fire retardant treated particle-board core. For ammonium sulfate, modulus of rupture (MOR) of COMPLY-board increased with increasing chemical concentration up to 10 percent and then decreased after that concentration. However, Minalith showed reverse effect to the result for ammonium sulfate. Modulus of elasticity (MOE) of COMPLY-hoard decreased with increasing chemical concentration and its differences were not significant between concentration. Shear strength was shown better when treated with ammonium sulfate than with Minalith. Wood failure of COMPLY increased with increasing chemical concentration up to 15 percent and then decreased after that concentration, The products of parallel and cross veneer laminated were better than those of COMPLY composed of fire retardant treated particleboard core. Nontreated particle-board was the least in strength. MOE of fire retardant treated COMPLY increased by 136 percent and its MOE by 170 percent as compared with non treated particle-board.

리기다소나무 ( Pinus rigida Miller ) 의 목재해부학적 및 물리학적성질에 관한 연구 - 간 (幹) , 지 (枝) , 근 (根) , 소두목의 (소頭木) 특성을 중심으로 -

이필우 ( Phil Woo Lee ) 한국산림과학회 1972 한국산림과학회지 Vol.16 No.1

Pitch pine (Pinus rigida Miller) in Korea has become one of the major silvicultural species for many years since it was introduced from the United States of America in 1907. To attain the more rational wood utilization basical researches on wood properties are primarily needed, since large scale of timber production from Pitch Pine trees has now been accomplishing in the forested areast hroughout the country. Under the circumustances, this experiment was carried out to study the wood anatomical, physical and mechanical properties of Pitch Pine grown in the country. Materials used in this study had been prepared by cutting the selected pitch pine trees from the Seoul National University Forests located in Suwon. To obtain and compare the anatomical and physical properties of the different parts of tree such as stem, branch, top and rootwood, this study had been divided into two categories (anatomical and physical) . For the anatomical study macroscopical and microscopical features such as annual ring, intercellular cannal, ray, tracheid, ray trachid, ray parenchyma cell and pit etc. were observed and measured by the different parts (stem, branch, root and topwood) of tree. For the physical and mechanical properties the moisture content of geen wood, wood specific gravity, shrinkage, compression parallel to the grain, tension parallel and perpendicular to the grain, radial and tangential shear, bending, cleavage and hardness wree tested. According to the results this study may be concluded as follows: 1. The most important comparable features in general properties of wood among the different parts of tree were distinctness and width of annual ring, transition from spring to summerwood, wood color, odor and grain etc. In microscopical features the sizes of structural elements of wood were comparable features among the parts of tree. Among their features, length, width and thickness of tracheids, resin ducts and ray structures were most important. 2. In microscopical features among the different parts of tree stem and topwood were shown simillar reults in tissues. However in rootwood compared with other parts on the tangential surface distinctly larger ray structures were observed and measured. The rnaximum size of unseriate ray was attained to 27 cell (550μ) height in length and 35 microns in width. Fusiform rays were formed occasionally the connected ray which contain one or several horizontal cannals. Branchwood was shown the same features like stemwood but the measured values were very low in comparing with other parts of tree. 3. Trachid length measured among the different parts of tree were shown largest in stem and shortest in branchwood. In comparing the tracheid length among the parts the differences were not shown only between stem and rootwood, but shown between all other parts of tree. Trachid diameters were shown widest in rootwood and narrowest in branchwood, and the differences among the different parts were not realized. Wall thickness were shown largest value in rootwood and smallest in branchwood, and the differences were shown between root and top or branchwood, and between stem and branch or top wood, but not shown between other parts of tree. 4. Moisture contents of green wood were shown highest in topwood and lowest in heartwood of stem. The differences among the different parts were recognized between top or heartwood and other parts of tree, but not between root and branchwood or root and sapwood. 5. Wood specific gravities were shown highest in stem and next order root and branchwood, but lowest in topwood. The differences were shown clearly between stemwood and other parts of tree, but not root and branchwood. However the significant difference is realized as most lowest value in topwood. 6. In compression strength parallel to the grain compared among the different parts of tree at the 14 percent of moisture content, highest strength was appeared in stem, next order branch and rootwood, but lowes