• Life and Agrochemicals
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• v.29 no.9
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• pp.33-35
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• 2008

• Life and Agrochemicals
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• v.28 no.1 s.224
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• pp.58-61
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• 2007

• Life and Agrochemicals
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• v.28 no.9 s.232
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• pp.33-35
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• 2007

• Life and Agrochemicals
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• s.279
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• pp.18-21
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• 2012

• Life and Agrochemicals
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• v.27 no.6 s.219
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• pp.56-59
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• 2006

「농약∙비료가격표시제」개정, 전격 시행/ 신임 농해수위 위원장에 권오을 의원/ 경농, 잎집무늬마름병 전문약「영그네」출시/ 농림부, 농약잔류허용기준 73개 추가/ 신젠타, 도열병∙잎집무늬마름병약「필리아」출시/ 농진청, 「제초제 저항성잡초의 발생과 관리」국제 심포지엄 개최/ 아리스타, 「친환경농업인 쉼터」개소식 가져/ 한국작물보호協, 「2006농약혼용정보」책자 발행/ 영일케미컬, 「개혁방향 모색 위한 특강」실시/

• Journal of the Korean Society of Costume
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• v.51 no.1
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• pp.97-104
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• 2001

본 연구의 목적은 양탄자 시대 Navajo 직물의 특징을 살펴보고, 특히 시간의 흐름에 따른 양탄자의 발달을 고찰하는데 있다. 연구방법은 양탄자 스타일의 특징 및 변화에 대한 문헌을 중심으로 조사하였고, 아리조나 주립박물관과 역사박물관을 견학하였으며 박물관 안에 있는 전문가들의 조언을 듣고 연구의 자료를 보완하였다. 또한 Navajo 직물 전시회에서 실제로 직물을 관찰하였고 주요직물들을 시각적 자료로 제시하였다. 양탄자시대는 20세기 초에 서구인들의 요구에 따라 새로운 형태의 Navajo 직물이 출현하면서 시작되었고 초기, 부흥기, 지역적 스타일시대로 구분되며 1940년대 이후 지금까지 지역적 스타일 양탄자시대에 해당한다. 즉 현재 Navajo인들은 거주 지역에 따라 스타일, 색상, 염색 방법, 디자인이 서로 다른 양탄자를 생산하며 대표적인 것으로는 Crystal, Chinle. Wide Ruin, Two Grey Hills, Tees Nos Pos. Ganado, Storm Pattern 양탄자의 일곱 가지를 들 수 있다.

• Life and Agrochemicals
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• s.278
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• pp.26-31
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• 2012

선도 11개사 순위변동은 없고, 신젠타 농약 매출 100억 달러 넘어 농약 산업계 1위 자리를 고수, 아리스타라이프사이언스 2011년 최대 매출 실적 달성, 몬산토 매출 실적 회복 등 선도회사별 현황을 알아본다.

• Journal of Space Technology and Applications
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• v.3 no.2
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• pp.118-143
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• 2023

Space is becoming more commercialized. Despite of its delayed start-up, space activities in Korea are attracting more nation-wide supports from both investors and government. May 25, 2023, KSLV II, also called Nuri, successfully transported, and inserted seven satellites to a sun-synchronous orbit of 550 km altitude. However, Starlink has over 4,000 satellites around this altitude for its commercial activities. Hence, it is necessary for us to constantly monitor the collision risks of these satellites against resident space objects including Starlink. Here we report a quantitative research output regarding the conjunctions, particularly between the Nuri satellites and Starlink. Our calculation shows that, on average, three times everyday, the Nuri satellites encounter Starlink within 1 km distance with the probability of collision higher than 1.0E-5. A comparative study with KOMPSAT-5, also called Arirang-5, shows that its distance of closest approach distribution significantly differs from those of Nuri satellites. We also report a quantitative analysis of collision-avoiding maneuver cost of Starlink satellites and a strategy for Korea, being a delayed starter, to speed up to position itself in the space leading countries. We used the AstroOne program for analyses and compared its output with that of Socrates Plus of Celestrak. The two line element data was used for computation.

• Cartoon and Animation Studies
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• s.42
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• pp.25-52
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• 2016

Animation documentary is a hybrid genre that is newly highlighted with opposite properties. The actual world is reproduced with an unrealistic method in documentary aspect, but the objectivity of documentaries cannot be guaranteed as the boundary of actual pictures and digital images has become ambiguous. As the animation documentary by Ari Folman succeeded in 2008, the focus of this study is on 'how can fictional animations prove the authenticity of documentaries?' in which the study is mainly conducted in documentary aspect. For this, the researcher considers visual style research has important role in understanding and developing a new video genre, and asserts the necessity of research on reproduction image that is produced by the characteristics of animation which is produced in frame units. This paper has contents on the visual style of animation documentaries with pictorial reproduction methods in which animation images were classified into 3 styles based on previous research on animation documentary style. Visual styles are classified into actual image that is based on similarity with reality to deliver objective facts, image that is transformed through emphasis and omission which are factors of animations, and surrealistic image that reproduces non-visual regions such as illusions and the inner side of characters. Through this study that analyzes visual style types and characteristics, animation documentaries are expected to position as a hybrid genre that illustrates reality with a new method instead of being included in the existing reproduction method of documentaries.

• Journal of the Korean Society of Earth Science Education
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• v.10 no.2
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• pp.214-225
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• 2017

The first accurate estimate of the Earth's circumference was made by the Hellenism scientist Eratosthenes (276-195 B.C.) in about 240 B.C. The simplicity and elegance of Eratosthenes' measurement of the circumference of the Earth by mathematics abstraction strategies were an excellent example of ancient Greek ingenuity. Eratosthenes's success was a triumph of logic and the scientific method, the method required that he assume that Sun was so far away that its light reached Earth along parallel lines. That assumption, however, should be supported by another set of measurements made by the ancient Hellenism, Aristarchus, namely, a rough measurement of the relative diameters and distances of the Sun and Moon. Eratosthenes formulated the simple proportional formula, by mathematic abstraction strategies based on perfect sphere and a simple mathematical rule as well as in the geometry in this world. The Earth must be a sphere by a logical and empirical argument of Aristotle, based on the Greek word symmetry including harmony and beauty of form. We discuss the justification of these three bold assumptions for mathematical abstraction of Eratosthenes's experiment for calculating the circumference of the Earth, and justifying all three assumptions from historical perspective for mathematics and science education. Also it is important that the simplicity about the measurement of the earth's circumstance at the history of science.