• 제목/요약/키워드: seed line

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Robust Road Detection using Adaptive Seed based Watershed Segmentation (적응적 Seed를 기초로한 분수계 분할을 이용한 차도영역 검출)

  • Park, Han-dong;Oh, Jeong-su
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2015.10a
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    • pp.687-690
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    • 2015
  • Forward collision warning systems(FCWS) and lane change assist systems(LCAS) need regions of interest for detecting lanes and objects as road regions. Watershed segmentation is effective algorithm that classify the road. That algorithm is split results appear differently depending on Watershed line with local minimum in the early part of the seed. If not road regions or vehicles combined the road's seed, It segment road with the others. For compensate the that defect, It has to adaptive change by road environment. The method is that image segmentate the several of regions of interest. Then It is set in a straight line that is detected in regions of interest. If It was detected cars on seed, seed is adjusted the location. And If It wasn't include the line, seed is adjusted the length for final decision the seed. We can detect the road region using the final seed that selected according to the road environment.

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Characteristics of F$_2$Hybrids from Crosses between Korean Cultivars and Canadian Cultivars in Buckwheat(Fagopyrum esculentum Moench.)

  • Yoon, Kyoung-Min;Hong, Soon-Kwan;Park, Cheol-Ho
    • Plant Resources
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    • v.5 no.1
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    • pp.45-50
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    • 2002
  • Korean cultivars of buckwheat(Fagopyrum esculentum Moench.) was crossed with Canadian cultivars in order to improve seed yield as well as leaf production of buckwheat for using as food and medicine. The agronomic characteristics and rutin contents of F$_2$ hybrids are investigated for further selection of superior lines. Dry weight per plant was the highest in a line 1110(6.71g) and leaf weight per plant was the highest in a line 1110(1.91g). Hybrid seeds were 0.55 - 0.70cm long and 0.37 - 0.47cm wide on average. 100 seeds weight ranged from 2.57g to 3.58g. Line 1076 produced the longest seeds(0.70cm) and line 1186 was the longest in seed width. Line 1196 showed the highest 100 seeds weight(3.58g). The highest frequency of the LWR(length/width rate) was 0.66~0.70, indicating that seed shape of the hybrids was mostly oval. Line 1087 showed the highest contents of rutin(77.26ppm). Lines 1090 and 1181 contained respectively rutin of 54.76ppm and 54.35ppm in the seeds. From the yield and rutin point of view, the most superior lines was line 1087 among the lines used for this study.

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A Study on Fabrication of Conductor Patterns on AlN Ceramic Surface by Laser Direct Writing (레이저 직접묘화법에 의한 AlN 기판상의 전도성 패턴 제작에 관한 연구)

  • Lee, Je-Hoon;Seo, Jung;Han, Yu-Hee
    • Laser Solutions
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    • v.3 no.2
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    • pp.25-33
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    • 2000
  • One of perspective direction of microfabrication is direct laser writing technology that allows to create metal, semiconductive and dielectric micropatterns on substrate surface. In this work, a two step method, the combination of seed forming process, in which metallic Al seed was selectively generated on AlN ceramic substrate by direct writing technique using a pulsed Nd : YAG laser and subsequent electroless Ni plating on the activated Al seed, was presented. The effects of laser parameters such as pulse energy, scanning speed and pulse frequency on shape of Alseed and conductor line after electroless Ni plating were investigated. The nature of the laser activated surface is analyzed from XPS data. The line width of this metallic Al and Ni is analyzed using SEM. As a results, Al seed line with 24㎛ width and 100㎛ isolated line space is obtained. Finally, laser direct writing can be applied in the field between thin and thick film technique in electronic industry.

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Development of an Automatic Seeding System Using Machine Vision for Seed Line-up of Cucurbitaceous Vegetables (기계시각을 이용한 박과채소 종자 정렬파종시스템 개발)

  • Kim, Dong-Eok;Cho, Han-Keun;Chang, Yu-Seob;Kim, Jong-Goo;Kim, Hyeon-Hwan;Son, Jae-Ryoung
    • Journal of Biosystems Engineering
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    • v.32 no.3
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    • pp.179-189
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    • 2007
  • Most of the seeds of cucurbitaceous rootstock species used for grafting were mainly sown by hand. This study was carried out to develop an on-line discriminating algorithm of seed direction using machine vision and an automatic seeding system. The seeding system was composed of a supplying device, feeding device, machine vision system, reversing device, seeding device and system control section. Machine vision was composed of a color CCD camera, frame grabber, image inspection chamber, lighting and personal computer. The seed image was segmented into a region of seed part and background part using thresholding technique in which H value of HSI color coordinate system. A seed direction was discriminated by comparing position between the center of circumscribed rectangle to a seed and the center of seed image. It took about 49ms to identify and redirect seed. Line-up status of seed was good the more than 95% of a sowed seed. Seeding capacity of this system was shown to be 10,140 grains per hour, which is three times faster than that of a typical worker.

Basic Seed Stock Maintenance and Multiplication in Indian Tropical Tasar Silkworm Antheraea mylitta Drury-A Strategic Approach

  • Reddy, Rangareddygari Manohar;Suryanarayana, Nagabathula;Ojha, Nand Gopal;Hansda, Ganga;Rai, Suresh;Prakash, Nanjappa Basappa Vijaya
    • International Journal of Industrial Entomology and Biomaterials
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    • v.18 no.2
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    • pp.69-75
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    • 2009
  • Daba ecorace of Antheraea mylitta Drury (Lepidoptera: Saturniidae), the semi domesticated Indian tropical tasar silkworm being reared outdoor; the egg and silk yields are dependent of genotype environment interaction. The insufficient maintenance and multiplication of its P4 seed stock need a coherent as well as scientific strategy to safeguard breed potential, being commercially applied ecorace. The sort-out lines of P4 stock studied over five generations highlighting on commercial trait up gradation suits for a tropical crop season, revealed enhanced performance. The line with high pupal parents (T2) shown improved fecundity (12.9%) and the line with high shell parents (T3) recorded higher shell weight (40.0%) and silk ratio (24.1%). While, the line of high pupal female and high shell male (T4) reveal enhancement in fecundity (9.0%), egg hatching (14.1%), shell weight (50.0%), silk ratio (35.2%) and absolute silk yield (52.0%) indicating the need and role of varied basic seed stock lines. The approach could improve economically vital egg fecundity and cocoon shell weights besides balancing them in same line for commercial operation. The progressive show of lines (T1 to T4) along successive generations (G1 to G5), in spite of passing through seed crop (Jul-Aug) and commercial crop (Sep-Nov) seasons emphasize their compatibility. The study infers that the strategic plan of combining preferred parental phenotypes, methodical selection for desired commercial trait(s) through generations with best possible genotype environment interaction has enriched P4 stock with elevation in needy trait(s) besides assuring choice of suitable lines for seasons and regions and timely replenishment of basic seed of Daba ecorace.

Evaluation and Seed Increase of Sources of Resistance to Phytophthora capsici in Pepper (고추 역병 저항성 재료의 특성평가와 종자 증식)

  • Kim, Dong-Woo;Kim, Byung-Soo;Bae, Su-Yeon;Han, Jeong-Hye
    • Current Research on Agriculture and Life Sciences
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    • v.20
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    • pp.83-90
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    • 2002
  • Resistance to Phytophthora Capsici and horticultural characteristics of selections from the resistance sources such as PI123469, PI201234, PI201232, AC2258 (=Line 29), CM334, KC268, KC358, KC820, KC821, KC822, KC823 (Line 29), KC462, KC463, KC464 were evaluated and recorded in the process of seed increase. Selections of PI123469, PI201234, PI201232, AC2258, KC823 (Line 29 = AC2258) of them showed the highest level of resistance. A considerable difference in the level of resistance was observed between lines selected from the same sources. The variation between selections derived from the same source was thought to be attributable to natural cross-pollination that may have occurred during the seed increase. Therefore, securing self-pollinated seed by wrapping the flower buds before anthesis would be necessary to obtain genetically pore resistant lines. The next alternative would be to increase the seed in small net houses for single line or field cage.

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A Study on the Improvement Methods for Hybrid Sorghum Seeds Production

  • Ji-Young Kim;Sang-ik Han;Seok-bo Song;Byeong-won Lee;Ji-ho Chu;Young-kwang Ju;Chung Song Kim
    • Proceedings of the Korean Society of Crop Science Conference
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    • 2022.10a
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    • pp.205-205
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    • 2022
  • Sorghum (Sorghum bicolor L.) is a major cereal grain crop of the world and It can be cultivated under high temperature and dry condition with high adaptability to the adverse environment. It is usually eaten with rice in korea and most of domestic sorghum cultivars have been developed by pure line selection and cross breeding. In prior studies, Hybrid cultivar (F1 seed) was known to improve 30-40% in yield and resist to disease and pest than pure line varieties due to hybrid vigor. Therefore, study on the hybrid sorghum is continuously necessary. In korea, hybrid sorghum cultivar have been developed, so we need to find methods seed production technology for supply and commercialization of hybrid seed cultivar. Female inbred line(A-line) and male inbred line(R-line) are needed for hybrid seed production. This study was carried out to investigate growth characteristics and yield of hybrid sorghum according to the seedling period and planting rate between female inbred line(YSA1) and male inbred line (Sodamchal, Miryang 19). When the flowering period of two inbred groups in the process of hybrid seed production is coincides, hybrid seed production is increase. The female inbred line and male inbred lines were cultivated at Daegu in 2021. Two inbred lines were sown at intervals of 3 days and 7days and were evaluated flowering period. As a result, the flowering period of the female inbred line and male inbred lines were matched at the 7days interval. To find out optimal planting rate, two inbred lines were cultivated under different plating rate (4:2, 5:2, 6:2). Yield of YSA1/Sodamchal(F1) was the highest 130(kg/10a) in the 4:2 ratio and yield of YSA1/Miryang 19 was the highest quantity of 139(kg/10a) in the 6:2 ratio. The results of this study could be helpful for hybrid Sorghum seeds production.

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The Effects of Increase in the Oyster Hatchery on Fishermen's Income (굴 인공종묘배양장의 육성이 어가소득에 미치는 영향)

  • 박영병
    • The Journal of Fisheries Business Administration
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    • v.29 no.2
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    • pp.143-161
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    • 1998
  • The objective of this study is to analyze the effects of increase in the oyster hatchery on fishermen's income. The results of the analysis are as follows : \circled1 The necessary quantities of oyster seed are 18,000 thousand hanging line. The 29.4%, of that has been applied by ana-seed collection and 29.1% of that has been applied by proseed collection. The demage of oyster aquaculture business is estimated about 35 billion won or 83 billion won. \circled2 The production cost per hanging line of the oyster hatchery is 1,974 won. And if it is sold by 2,500 won, return on investment will be 31.9%. Therefore profitability of the oyster hatchery is very good. \circled3 There are four important determinant variables of profitability to the oyster hatchery. In the order of their effects, it is operation number, seed price, production cost, and quantity of production. \circled4 If differences of price between the artificial hardening oyster seed and the natural hardening oyster seed are more less 1,430 won, the former is better. \circled5 The necessarily quantities of the oyster hatchery are estimated 160 units in the scale of 10,000 hanging line production to one operation. \circled6 The effect of increasing income of fishermen are estimated about 85.3 billion won or 124.5 billion won from increase in the oyster hatchery.

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Y2BaCuO4 Segregarion , a Possibility of Multi-Seeding and the Origin of Diagonal Line in YBa2Cu3O7-$\delta$ Superconductor Single Crystal (YBa_{2}Cu_{3}O_{7-\delta} 고온초전도체 단결정에서의 Y_{2}BaCuO_{5} 편석과 Multi-Seeding의 가능성, 대각선 흔적의 형성 원인)

  • 성현태
    • Progress in Superconductivity and Cryogenics
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    • v.1 no.1
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    • pp.1-6
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    • 1999
  • The microstructures of top seed mult processde $\textrm{YBa}_2\textrm{Cu}_3\textrm{O}_7$.$\delta$ single crystal were studied. Although shape of the seed was not faceted. the growth shape of Y123 single crystal was faceted. It was observed that Y211 phases were trapped in specific spaces of the faceted region. From the microstructural investigation. it was suggested that the segregation of Y211 is due to the difference of growth rates in crystal direction. When a single crystal was grown by the single seed with stepped multi surfaces. a microstrue was grown from multi-seed. The microstructure show the possibility of multi-seed growth. Corn kernel like structure without Y211 phase was observed and seemed to be formed by the diffusion reaction between Y211 phase in crystal and liquid wetted on the crystal. the diagonal line on Y123 crystal was observed that it was formed by the corn kernel like structure.

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Comparison in Rutin Content of Tartary Buckwheat(Fagopyrum tataricum) (쓴메밀(Fagopyrum tataricum) 유전자원의 루틴 함량 비교)

  • Park Byoung Jae;Park Jong In;Chang Kwang Jin;Park Cheol Ho
    • Korean Journal of Plant Resources
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    • v.18 no.2
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    • pp.246-250
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    • 2005
  • This study carried out to compared a rutin content in seed and plant of tartary buckwheat(Fagopyrum tataricum) to collect in the world. Rutin content in seed and plant parts of tartary buckwheat is higher than F. esculentum and F. cymosum. Rutin contents in plant parts of 3 species was higher with order of flower> leaf> seed> stem> root and that of tartary buckwheat was higher about 3.2 times in flower and about 3.1 times in stem and about 65 times in seed of F. esculentum. Compared to rutin contents for seed color and shape of tartary buckwheat 50 lines, seed color was higher with order of dark gray>black>brown and seed shape was higher with order of Slender> Notched> Round. Rutin content in plant parts of cultivated lines was higher than wild lines. Compared to rutin contents in plant parts of tartary buckwheat collected at the different region, Bhutan line had much higher than other lines. Rutin contents were lower than in the leaf and stem of Pakistan line and in the seed of India line.