• Title/Summary/Keyword: Y Block

Search Result 12,758, Processing Time 0.045 seconds

A Study on the Printed Books of Ch'un-ch'iu(春秋) Commentary in Chosun Dynasty Period (조선시대에 간인(刊印)된 "춘추(春秋)" 판본(板本)에 관한 서지적(書誌的) 연구)

  • Yeom, Chong-Il;Song, Il-Gie
    • Journal of the Korean Society for Library and Information Science
    • /
    • v.41 no.4
    • /
    • pp.331-346
    • /
    • 2007
  • The purpose of this study is to research into the characteristics of the printed hooks of ${\ulcorner}$Ch'un-ch'iu(春秋)${\lrcorner}$ commentary in Chosun dynasty by analyzing the types and forms of the existing printed books through the investigation of the bibliographic records of the books. To achieve this purpose, this study selected some of the 'Chak-pan' catalog(冊板目錄) printed in Chosun dynasty which has relatively clear and accurate history and investigated the block printing's condition of the printed books of ${\ulcorner}$Ch'un-ch'iu(春秋)${\lrcorner}$ commentary. In addition. a comprehensive book catalog of ${\ulcorner}$Ch'un-ch'iu(春秋)${\lrcorner}$ commentary was created by retrieving old book catalog from databases by several authoritative information centers and university libraries. Based on this catalog, this research created a new 'Union Catalog(綜合書目)' which contains bibliographies of the ${\ulcorner}$Ch'un-ch'iu(春秋)${\lrcorner}$ commentary through field investigations by identifying, picture-taking. and copying the real books. The new union catalog functions as the basis of the bibliographic analysis of this research.

Verification of Spatial Resolution in DMC Imagery using Bar Target (Bar 타겟을 이용한 DMC 영상의 공간해상력 검증)

  • Lee, Tae Yun;Lee, Jae One;Yun, Bu Yeol
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
    • /
    • v.30 no.5
    • /
    • pp.485-492
    • /
    • 2012
  • Today, a digital airborne imaging sensor plays an important role in construction of the numerous National Spatial Data Infrastructure. However, an appropriate quality assesment procedure for the acquired digital images should be preceded to make them useful data with high precision and reliability. A lot of studies therefore have been conducted in attempt to assess quality of digital images at home and abroad. In this regard, many test fields have been already established and operated to calibrate digital photogrammetric airborne imaging systems in Europe and America. These test fields contain not only GCPs(Ground Control Points) to test geometric performance of a digital camera but also various types of targets to evaluate its spatial and radiometric resolution. The purpose of this paper is to present a method to verify the spatial resolution of the Intergraph DMC digital camera and its results based on an experimental field testing. In field test, a simple bar target to be easily identified in image is used to check the spatial resolution. Images, theoretically designed to 12cm GSD(Ground Sample Distance), were used to calculate the actual resolution for all sub-images and virtual images in flight direction as well as in cross flight direction. The results showed that the actual image resolution was about 0.6cm worse than theoretically expected resolution. In addition, the greatest difference of 1.5cm between them was found in the image of block edge.

Studies on the N , $P_2O_5$ and $K_2O$-Application in the Mixed Sward of Alfalfa-Grass I. Effect of nitrogen fertilization on dry mixed sward of alfalfa-grasses (Alfalfa-Grass 혼파초지에 대한 3요소 시비 연구 I. 질소질비료의 시용수준이 alfalfa-grass 혼파초지의 건물 및 양분수량에 미치는 영향)

  • 박근제;최기준;이필상;김영진
    • Journal of The Korean Society of Grassland and Forage Science
    • /
    • v.15 no.3
    • /
    • pp.169-174
    • /
    • 1995
  • To investigate the effects of nitrogen(N) fertilization levels on the dry matter(DM) yield, nutrition yield, and N efficiency of forages in mixed sward of alfalfa-grasses, a field experiment arranged by randomized complete block design with five treatments(0, 70, 140, 210 and 280kg N/ha) was conducted at Livestock Experiment Station in Suwon, September, 1990 to February, 1993. During two years, average DM yields of forage increased as N fertilization level was increased, but no significant difference was found between DM 10,266kg of N 210kgha and DM 10,845kg of N 280kgha. Crude protein and energy productivity of forages increased as N fertilization level was increased, and the increasing degree was highest between N 140kg and 210kg/ha fertilization. With increasing N fertilization, mineral contents tended to decrease in P and K/Ca+ Mg equivalent ratios, to increase in Mg, but not to be regular in the other elements. Efficiency of N was highest at N 210kg/ha fertilization, which produced DM 21.6kg, net energy lactation 129.3 MJ, starch equivalent 12.3kStE and total digestible nutrients 14.5kg per Ikg N.

  • PDF

Effect of N Application Rate on Fixation and Transfer from Vetch to Barley in Mixed Stands. (질소시용수준이 베치-보리 혼파 사초의 질소고정 및 베치에서 보리로 질소이동에 미치는 영향)

  • Lee Hyo Won;Kim Won Ho;Park Hyung Soo;Ko Han Jong;Kim Su Gon
    • Journal of The Korean Society of Grassland and Forage Science
    • /
    • v.25 no.1
    • /
    • pp.1-6
    • /
    • 2005
  • With recent interest organic farming the use of legumes including vetch and clover to provide N to adjacent crops is increasing in Korea. In the present studies, we conducted a trial to investigate the effects of the application of N rate on nitrogen fixation and transfer from vetch to barley in mixed stands. The experiment was arranged in a randomized complete block design with three replications. Four different N rates(0, 75, 113 and 150/ha) was used and vetch+barley was broadcasted manually on 1.5 $\times$2 m plot in Oct. 2001. Half of urea and K$_{2}O, 200 Phosphate and 75 kg potash per ha were applied as basal dressing md half of N md 75 potash were used for topdressing to soil surface on MarctL 2002. The equivalent of 1kg ha$^{-1}$ at($^{15}$NH$_{4}$)$_{2}$SO$_{4}$ solution at 99.8 atom $\%$$^{15}$N excess was applied to the microplot in mid April. Forage was harvested from each plot at ground level and separated into barley and vetch. Total N content and It values of samples were determined using a continuous flow stable isotope ratio mass spectrometry(IsoPrime-EA. Micromass, UK.). The percentage of legume H fixed from atmospheric N2 were 95.0, 93.8, 94.4 and $84.8\%$ with increment of N levels. The percentage of N transfer from vetch to barley by N-difference method with increment of N fertilizer were from 58 to$49\%$ while 39 to $23\%$ in $^{15}$N-dilution method. The amount of transfer from vetch to barley were 87 to 68 kg/ ha with N level by N-difference moth여 and 58 to -56/ha with N application levels by $^{15}$N dilution method. The amount of nitrogen fixation per ha were from 150 kg / ha to 219 kg / ha by different method, but on the other side 49 to 105kg/ha by N$^{15}$-dilution.

Effect of Cutting Times according to Growth Stage in Sorghum X Sudangrass Hybrid on Frequence of Use, Growth Characteristics, Forage Production and Crude Protein Yield (생육단계별 예취 시기가 수수 X 수단그라스 교잡종의 이용회수, 생육특성, 수량 및 조단백질수량에 미치는 영향)

  • Jeon Byong Tae;Lee Sang Moo
    • Journal of The Korean Society of Grassland and Forage Science
    • /
    • v.25 no.1
    • /
    • pp.33-42
    • /
    • 2005
  • A field experiment was conducted to evaluate growth characteristics, forage production and crude protein yield according to cutting time of Soghum ${\times}$ Sudangrass Hybrid, and decide ideal harvesting time for use of soiling and silage. Experiment design was arranged with 7 different treatment T1(150 m), T2(200 cm), T3(boot), T4(heading), T5(milk), T6(dough) and T7(yellow stage), as a randomized block design. The results were as fellows : Cutting times of utilization during the course of a year was 4 times at T1 and T2, 3 times at T3 and T4, and 2 times at T5, T6 and T7. Accumulative plant length was the highest at T2(666cm), but T3 was the lowest as 402 cm. Mean Leaf length was the highest at T5(82.1 m) and lowest at T7(T1.8 m). Mean leaf width was the highest at T2 and lowest at T6. Stem diameter was orderly ranked as T3(10.7 mm)>T1(9.5)>T2, T5(9.3>T6(8.9)>T7(8.6)>T4(8.5). Stem hardness was orderly ranked as $T7(3.2 kg/cm^2$>T5, T6(2.3)>T3, T4(1.5)> T2(0.6)>T7(8.6)>T1(0.5). Mean of leaf number and leaf ratio was the highest at $T3(8.1\%)$ and $T2(45.3\%)$, respectively. The highest yield of fresh and dry matter was obtained at T4 and T6 as 113,246 and 24,249 kg/ha, respectively(P<0.05), and e lowest at T7 and T1 as 82,675 and 13,006 kg/ha, respectively(P<0.05). Crude protein yield was highest at T6(1.456 kg/ha) and lowest at T3 as 1,189 kg/ha. As mentioned above the result T1, T2 and T3 could be recommended as use of soiling, and T5, T6 and T7 as silage.

Effect of Different Seeding Dates on Agronomic Characteristics and Productivity of Sudangrass hybrid and Oat in Cropping After Corn for Silage in Kyeongbuk (경북지역에서 옥수수 후작 수단그라스간 교잡종 및 귀리의 파종시기가 생육특성 및 수량성에 미치는 영향)

  • Shin, Chung Nam;Ko, Ki Hwan;Kim, Jong Duk
    • Journal of The Korean Society of Grassland and Forage Science
    • /
    • v.34 no.2
    • /
    • pp.81-86
    • /
    • 2014
  • This study was conducted to evaluate the effect of different seeding dates on agronomic characteristics, forage quality, dry matter (DM) and dry matter digestible (DDM) yields of sudangrass hybrid (Sorghum bicolor(L.) Moench) and oat (Avena sativaL.) at Seongju in Kyeongbuk from 2012 to 2013. The experiment was arranged in randomized complete block design with three replications. Sudangrass was seeded five times seeding dates of 10 days interval ranging from $1^{th}$ August to $10^{th}$ September in 2012 and 2013. Oat was seeded three times seeding dates of 10 days interval ranging from $20^{th}$ August to $10^{th}$ September in 2013. Sudangrass was harvested on $26^{th}$ October, 2012 and $2^{nd}$ November, 2013. Plant length and DM content decreased with delaying seeing date. The DM and DDM yields of sudangrass were higher (P<0.05) in first seeding date than all other seeding dates and decreased with delaying seeding dates (P<0.05). The DM and DDM yields of oat were higher (P<0.05) in first and second seeding dates than third seeding date. The results of this study indicated that early seeding of sudangrass would be a recommended than late seeding after $20^{th}$ of August, and late seeding of oat after $30^{th}$ August would be recommened for DM and DDM yields in the Southern Korea.

Agronomic Characteristics and Productivity of Introduced Common Vetch (Vicia sativa) Cultivars and Korean Wild Common Vetch in Kyeongbuk (경북에서 도입 콤먼베치 및 자생종의 생육특성과 수량)

  • Shin, Chung Nam;Ko, Ki Hwan;Kim, Jong Duk
    • Journal of The Korean Society of Grassland and Forage Science
    • /
    • v.33 no.2
    • /
    • pp.117-122
    • /
    • 2013
  • This experiment was conducted to evaluate agronomic characteristics, forage quality, and dry matter (DM) yield of hairy vetch 'Cold green', common vetch 'Maxivesa', 'Wild common', 'Rasina', 'Morava', and 'Blanchefleur', at Seongju in Kyeongbuk from 2010 to 2012. The experiment was arranged in randomized complete block design with three replications. Vetchs were seeded on the 10th of Oct. 2010 and on the 3rd of Oct. 2011. Vetch plants were harvested on the 4th of May 2011 and on the 10th of May in 2012. 'Cold green' and 'Wild common' exhibited greater cold tolerance than other cultivars. Fifty percent-flowering of 'Cold green' occurred on the 22nd of Apr., whereas that of 'Wild common' occurred on the 26th of Apr. and those of 'Rasina' and 'Blanchefleur' occurred on 28th of Apr. and that of 'Maxivesa' occurred on 17th of May. The DM yield of 'Cold green' was higher (p<0.05) than all other cultivars, whereas the DM yield of 'Wild common' was higher (p<0.05) than those of the remaining 4 cultivars. According to the results obtained from this study, it is suggested 'Wild common' vetch is be recommendable for cultivation where increased DM production is sought.

Growth Characteristics and Nutritional Composition of Italian Ryegrass (Lolium multiflorum Lam.) Cultivars Grown in a Paddy Field (논토양에 이탈리안 라이그라스 재배 시 품종별 생육특성 및 영양성분 비교 연구)

  • Lee, Sang Moo;Kim, Eun Joong
    • Journal of The Korean Society of Grassland and Forage Science
    • /
    • v.37 no.2
    • /
    • pp.183-188
    • /
    • 2017
  • This study investigated the comparative growth characteristics, yield, chemical compositions, and nutritive yield of Italian ryegrass cultivars harvested in a paddy field. The experimental design was a randomized block design with three replicates. The treatments consisted of seven Italian ryegrass cultivars (Kogreen, Kowinmaster, Hwasan 101, Kowinnearly, Kospeed, Sahalie select, and Strike). The planting date was October 21, 2009 and the sample harvest was occurred on May 21, 2010. Dry matter yield was higher in Kowinnerary and Kogreen than in the other varieties (p<0.05). Crude protein and ether extract contents were highest in Hwasan 101 and lowest in Kospeed. The content of total digestible nutrients did not differ among the Italian ryegrass varieties. The amino acid contents were in the order Hwasan 101 > Strike > Kowinnearly > Kogreen > Sahalie select > Kospeed > Kowinnearly (p<0.05). Fructose content was highest in Kospeed, while glucose and sucrose contents were highest in Hwasan 101. The results of this study indicate that Kowinnearly, in terms of dry matter yield, and Hwasan 101, in terms of feed value (chemical composition and free sugar content), may be recommended for forage production in a paddy field.

A Real-Time Multiple Circular Buffer Model for Streaming MPEG-4 Media (MPEG-4 미디어 스트리밍에 적합한 실시간형 다중원형버퍼 모델)

  • 신용경;김상욱
    • Journal of KIISE:Computing Practices and Letters
    • /
    • v.9 no.1
    • /
    • pp.13-24
    • /
    • 2003
  • MPEG-4 is a standard for multimedia applications and provides a set of technologies to satisfy the needs of authors, service providers and end users alike. In this paper, we suggest a Real-time Multiple Circular Buffer (M4RM Buffer) model, which is suitable for streaming these MPEG-4 contents efficiently. M4RM buffer generates each structure of the buffer, which matches well with each object composing an MPEG-4 content, according to the transferred information, and manipulates multiple read/write operations only by its reference. It divides the decoder buffer and the composition buffer, which are described in the standard, by the unit of frame allocated to minimize the range of access. This buffer unit of a frame is allocated according to the object description. Also, it processes the objects synchronization within the buffer and provides APIs for an efficient buffer management to process the real-time user events. Based on the performance evaluation, we show that M4RM buffer model decreases the waiting time in a buffer frame, and so allows the real-time streaming of an MPEG-4 content using the smaller size of the memory block than IM1-2D and Window Media Player.

A Global Buffer Manager for a Shared Disk File System in SAN Clusters (SAN 환경에서 공유 디스크 파일 시스템을 위한 전역 버퍼 관리자)

  • 박선영;손덕주;신범주;김학영;김명준
    • Journal of KIISE:Computing Practices and Letters
    • /
    • v.10 no.2
    • /
    • pp.134-145
    • /
    • 2004
  • With rapid growth in the amount of data transferred on the Internet, traditional storage systems have reached the limits of their capacity and performance. SAN (Storage Area Network), which connects hosts to disk with the Fibre Channel switches, provides one of the powerful solutions to scale the data storage and servers. In this environment, the maintenance of data consistency among hosts is an important issue because multiple hosts share the files on disks attached to the SAN. To preserve data consistency, each host can execute the disk I/O whenever disk read and write operations are requested. However, frequent disk I/O requests cause the deterioration of the overall performance of a SAN cluster. In this paper, we introduce a SANtopia global buffer manager to improve the performance of a SAN cluster reducing the number of disk I/Os. We describe the design and algorithms of the SANtopia global buffer manager, which provides a buffer cache sharing mechanism among the hosts in the SAN cluster. Micro-benchmark results to measure the performance of block I/O operations show that the global buffer manager achieves speed-up by the factor of 1.8-12.8 compared with the existing method using disk I/O operations. Also, File system micro-benchmark results show that SANtopia file system with the global buffer manager improves performance by the factor of 1.06 in case of directories and 1.14 in case of files compared with the file system without a global buffer manager.