• KOREAN JOURNAL OF CROP SCIENCE
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• v.30 no.1
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• pp.84-92
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• 1985

This experiment was carried out to study the morphological traits, yield and yield components of barley cultivars - Kangbori, Olbori and Suwon 18 - on different seeding dates. It appeared generally rapid development of young spike from late stage of floret differentiation (X stage) to complete it at heading stage. Young spike appeared more influencials by the different seeding dates rather than years and cultivars. Stem started the development from late stage of spikelet differentiation (VII stage) to early stage of floret differentiation (IX stage), indicating the continuing development from basal to upper internodes. Number of spikes per unit area showed more effect in seeding date rather than cultivar and year. However, number of kernels per spike and 1,000 kernel weight affected more due to years rather than cultivar and seeding date. It was significantly difference in grain yield according to different seeding dates.

• Journal of The Korean Society of Grassland and Forage Science
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• v.7 no.1
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• pp.63-69
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• 1987

This field experiment was undertaken to assess the effectiveness of magnesium- and boronenriched complex fertilizer ($N-P_2O_5-K_2O-MgO-B_2O_3$ : 8-25-7-3-0.2) compared with some straight fertilizers on the hilly pasture establishment. This second part was concerned with the changes in the forage yields, yield components, botanical and chemical compositions in a mixed grassclover sward (orchardgrass, tall fescue, Kentucky bluegrass, and ladino clover). The results from a two-year experiment are summarized as follows: 1. Dry matter yields of whole mixed forages were significantly reduced in control by 54.5% and the NK-plot ($P_o$ by 35.0%, compared with the normal NPK-plots. 2. The yields of oversown grasses were significantly reduced in control by 79.7% and the NKplot ($P_o$) by 52.196, compared with the normal NPK applications. At the normal NPK applications, the oversown grasses were lowest in the yields when provided with double superphosphate with no significant differences. The yields of weeds were not significantly influenced by the treatments. 3. The significant differences in the legume yields (relative yield, %) were laid in the follow. ing increasing order; complex fertilizer (178.5%) > NPK-fused superphosphate (139.5%) > NPK-double superphosphate (100.0%) = control > NK (51.1%). The legume yield was much more depressed in the NK-plot ($P_o$) than in control ($N_oP_oK_o$). 4. The rate of oversown grasses and whole forages were increased by the normal NPK applications, showing little difference among the kinds of fertilizers. It was recognized that the application of complex fertilizer contributed to the increasing of legume rate in the mixed sward. This contribution turned out to be due to the rather enhanced performance and yield-increase of legume, compared with the straight fertilizers. 5. With the NK-treatment ($P_o$) the P concentration in mixed forages dropped below the critical level (0.2%). The Mg concentrations in mixed forages were lower in all the plots than the critical level (0.2%). Therefore, a sufficient amount of Mg was desirably to be applied It is recommended that, in relation to its effectiveness and simplification of fertilizer application, the application of this complex fertilizer for pasture establishment be carried out. The change of the constituent ratio of complex fertilizer to the standard of "8 - 15-20 - 7 - 5-10 - 0.2" considering the need of sufficient Mg supply and the continuous accumulation of P in the top-surface soil is possibly recommended.commended.

• Journal of Gifted/Talented Education
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• v.25 no.2
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• pp.183-194
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• 2015

In this study, we identified the elements of teachers'expertise for the science gifted in science high school, and examined teacher perceptions of expertise. Through previous studies and expert consultations, 5 categories such as subject knowledge, inquiry teaching, pedagogical knowledge, student guidance and school work were derived. Based on these 5 categories and sub-element, a questionnaire was constructed. Total 284 mathematics and science teachers from 19 science high schools across the country responded to the survey. The desirable level of expertise and current level of responding teachers' own expertise were examined and compared to each other, and group comparisons were accomplished according to teacher career, type of degree and final degree. Some implications are suggested for the professional development for teachers of the science gifted.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.34 no.5
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• pp.471-478
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• 2016

This paper proposes the results of analysis of correlation between satellite geometry elements for an effective use of satellite images. To achieve accurate positional information, stereo images have normal range of convergence and BIE (BIsector Elevation) angles which are greatly influenced by azimuth and elevation angle of individual image. In this paper, the variations of convergence and BIE angles are estimated according to azimuth angle differences between two images and each elevation angle. The analysis provided strong support for predicting stereo geometry without complex analysis of epiploar geometry or mathematics. The experiment results showed that more than 150°, 130°, and 100° azimuth angle differences need to be constructed when elevation angle of two images is 50°, 60°, and 70°, respectively, in order to make the convergence and BIE angle within normal range. The results are expected to be fully used for various application using stereo images.

• Journal of the Korean Wood Science and Technology
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• v.36 no.4
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• pp.11-18
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• 2008

Anatomical characteristics of volumetric composition, fiber length, vessel diameter, and crystalline properties of cellulose in kenaf (Hibiscus cannabinus L.) planted in the reclaimed land of Buan-si, Korea were examined to understand the growth characteristics using a light microscopy and an X-ray diffraction method. The samples of kenaf were taken from six positions (3 cm, 35 cm, 70 cm, 105 cm, 280 cm, and 320 cm) of each stem over the growth period (July, August, September, and October) after seeding in the mid-May. In the kenaf stem, phloem constituted 10 to 15 %, xylem 66 to 82%, and pith 7 to 19%. The ray, bast fiber, and remainder comprised 50%, 20%, and 30% of the phloem, respectively. The volume of vessel, ray, and fiber in the xylem was approximately 10, 15, and 75%, respectively. The proportion of cell wall was 30.92% at the base of stem and 46.40% at the top of stem, respectively. The average length of bast fiber and xylem fiber was about 2.8 mm and 0.9 mm, respectively. Radial and tangential diameters of vessel increased with the increase of growth period, while they decreased with increasing the stem height. Relative crystallinity ranged from 70 to 79% in phloem and from 50 to 56% in xylem. Cellulose crystallite width was about 3 nm both in the phloem and xylem. Thus, the volumetric composition and cell dimensions in the phloem and xylem appeared to be varied with the growth period and the stem height.

• Annual Conference on Human and Language Technology
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• 1990.11a
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• pp.57-64
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• 1990

문장을 이루는 문장 구성성분 사이에는 다른 정도의 운율적 친밀성 (운율적 구성성분관계)와 상대적이며 계층적인 운율적 강도관계가 존재하며, 이를 바탕으로 문장의 운율구조를 세울 수 있으며, 운율구조는 나무그림으로 나타내는 것이 가장 효과적이다. 운율구조는 대응하는 통사구조가 보여주는 통사적 구성성분 관계 (constituency)와 계층적 지배관계와 대부분 일치하지 않지만, 문장의 운율구조는 먼저 구단위로 운율구조를 부과하고, 그 다음 단계에서 각 구들의 운율구조를 연결하여 완성해야 하며, 통사구조가 같은 구(phrase)도 구성요소들 사이에 존재하는 의미구조의 차이에 의해서 다른 운율구조를 가질 수도 있다. 그리고 문장의 일부만이 초점을 받으면, 초점받은 부분이 가장 강한 운율강도를 갖게되어 전체초점을 받을 때의 운율적 구성성분 관계와 계층적인 운율적 강도관계가 변할 수 있다.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.104-107
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• 2011

의료정보시스템에서 처리하는 데이터 크기가 급속하게 늘어남에 따라 대용량 데이터 처리에 대한 필요성이 갈수록 증가되고 있다. 최근 몇 년 동안 의료정보시스템을 구성하는 요소 중 디스크의 성능 향상 및 발전 속도가 중앙처리장치에 비해 둔화되고 있으며, 이와 같은 성능차이로 인해 디스크 장치가 시스템의 병목지역이 되어 전체 성능을 저하시키는 주된 요인이 되고 있다. 의료정보시스템은 주로 관계형 데이터베이스를 이용하여 저장하기 때문에 서버의 데이터 접근 처리방식과 I/O에 대한 부분이 성능을 크게 좌우한다. 따라서 본 논문에서는 의료정보시스템의 특성에 따른 하드웨어 RAID 디스크 구성 최적화 방안을 알아봄으로써 본 논문의 연구 결과가 시스템 구성 초기에 최적화된 I/O 를 위한 구성정보로 활용될 수 있도록 하고자 한다.

• Proceedings of the Korean Information Science Society Conference
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• 2003.10a
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• pp.475-477
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• 2003

HW 와 SW L4 스위치를 이용하여 구성된 웹 클러스터 시스템의 특성을 다양한 부하 상황에서 나타나는 성능 결과를 이용하여 비교를 하였다. 성능 평가 단위로 초당 처리하는 Request 들의 수와 각 시스템에서의 스피드업을 이용하였으며, 그 결과는 사용한 L4 스위치와 부하의 특성에 따라 성능의 안정성이나 스피드업의 차이로 나타난다. 적은 크기의 다량의 요청이 있는 부하 상황에서는 HW L4 스위치를 사용하는 것이 뛰어난 성능을 보였고, 서버에 부하를 많이 주는 Request 상황에서는 HW 와 SW의 성능 차이가 줄어들게 되었다. 이런 요소를 고려할 때 비용 대 성능 비의 효과적인 웹 클러스터 시스템을 구성할 때 어떠한 스위치를 사용하는 것이 좋을 지에 대한 결정에 주요한 실험 결과를 제공을 하였다.

• Proceedings of the Safety Management and Science Conference
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• 2001.11a
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• pp.15-19
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• 2001

80년대 골드랫 박사에 의해 이론이 소개된 이후, 북미와 유럽 지역에서 많은 학자와 기업가들에 의해 연구, 현장에 적용되면서 오늘날 경영혁신 기법들을 주도하는 이론으로 자리잡은 제약이론(Theory of Constraints)은 최근에야 비로소 국내에 소개되고 있는 실정이다. 하지만 소개된 대부분의 연구가 TOC를 구성하는 여러 엔진 중 DBR에 국한된 것들이며, DBR 스케줄링 역시 아직은 이론적 연구에 그치고 있다. 본 연구에서는 기존의 여러 DBR 스케줄링 연구에서 보여진 한계, 즉 제약자원을 선정하는 데 있어, 자원이 가진 부하비율(부하/능력)만을 선정의 기준으로 고려하는 것에서 벗어나 실제 생산현장에 존재할 수 있는 여러 요소를 고려한 스케줄링 방법을 제시하였다. 각 제약자원들의 중요도를 고려하는데 있어서, 객관적 요소와 주관적 요소를 분류한 후 여러 전문가가 각각의 주관적 요소에 부여된 값을 다구찌 기법에서 이용하는 SN비로 계산하고 그 값들을 정규화 하였고, 주관적 요소와 객관적 요소를 위한 가중치 또한 SN비로 계산하고 그 값들을 정규화하는 방법을 제시하였다. 이 방법은 여러 요소들을 고려한 제약자원의 결정에 있어서 다른 요소들에 대한 다수의 전문가의 의견 통합을 시도하였고, 동시에 제약자원 결정에 있어서 임의의 요소에 전문가들이 부여한 값들의 평균이 크고 그 값들이 차이가 적은 즉, 거의 일치한 평가를 내리는 자원을 제약으로 선정하고 스케줄링하는 방법을 시도하였다.

• Archives of design research
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• v.17 no.1
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• pp.329-338
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• 2004

This study did derive a characteristic of a cover design through considering a concept, a function and components of a cover design based on a literature study and through analyzing cases of the best-seller cover designs for the literature section from 1999 to 2002. In terms of a reader's preference for a cover design according to an age and sex of a reader, it tried to suggest a condition and a method of a book-cover design through a questionnaire survey and the image evaluation. In a survey of the preference for a cover design, there was the difference of interest degree in a kind of a book, a place to buy a book and a cover design according to an age and sex. In addition, it was shown that a woman prefers the stylish typography, and both a man and a woman prefer the cool color. However, except these two, the reason why there is no difference in preference for visual elements are that a cover design is an integrative image comprising several elements. Accordingly, through the Semantic Differential Method, it carried out the evaluation as to a cover design as an integrative image. As a result of that, an abstract image was shown to be difficult to convey a meaning because of its fall in clarity. Further, a cover design mainly comprising the stylish typography gained the high evaluation in unique and clarity. It is thought to be attributable to the easiness to achieve a goal of seeing and reading in a cover design in which an image and the typography are balanced, rather than the excessive visual. Even though the visual is excellent, there was difference from what having been excellent in conveying a meaning, which is a functional aspect. This study tried to examine, limiting it only to a visual element. It will be hereafter required to proceed with a study on the influence on a reader's preference according to material, bookbinding and a form of book which are elements comprising a cover design.