http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
클라이언트-서버 DBMS를 위한 멀티미디어 확장 SQL CLI의 개발
강은지(Eunji Kang),이재성(JaeSung Lee),장한울(HanWool Chang),김지현(Jihyun Kim),강현철(Hyunchul Kang),전성택(Sungtaeg Jun) 한국정보과학회 1997 정보과학회 컴퓨팅의 실제 논문지 Vol.3 No.4
본 논문은 망 환경의 클라이언트-서버 DBMS를 위한 멀티미디어 확장 SQL Call Level Interface(CLI)의 개발을 기술한다. SQL CLI는 클라이언트-서버 환경에 적합한 데이타베이스 응용 프로그래밍 인터페이스로서, 현재의 표준 사양에는 멀티미디어 데이타의 처리 기능이 충분히 명시되어 있지 않다. 본 논문에서는 첫째, CLI의 멀티미디어 확장을 제안하고 평가한다. 본 확장은 현재의 CLI 표준 사양에 멀티미디어 데이타에 대한 분할전송 연산, 부분연산, 그리고 유출/유입 연산을 수행하는 새로운 함수들의 추가로 구성된다. 둘째, 제안된 멀티미디어 확장 CLI를 한국전자통신연구원에서 개발한 바다-II DBMS 상에 개발한 결과를 기술한다. This paper describes the development of the SQL Call Level Interface(CLI) with multimedia extension for a client-server DBMS in the network environment. The SQL CLI is a database application programming interface for the client-server environment, whose current standard specification lacks the multimedia data handling capability. In this paper, we first propose and evaluate the multimedia extension of the CLI. New functions are added to the current CLI standard specification to support segment transfer, partial, and export/import operations of the multimedia data. Secondly, we describe the development of the extended CLI on top of BADA-II DBMS developed at ETRI.
Jin Kyo Jung,Bo Yoon Seo,Sungtaeg Kang,Siwoo Lee 한국응용곤충학회 2018 한국응용곤충학회 학술대회논문집 Vol.2018 No.04
Development and fecundity of the foxglove aphid, Aulacorthum solani (Hemiptera: Aphididae) were investigated at ten constant temperatures (photoperiod: 15L:9D) from 2.5 to 30℃ on soybean (Glycine max) leaves. The nymphs couldn’t emerge to adults at 2.5 and 30℃. The lower development temperature threshold and thermal constant of development completion estimated with a linear development model in nymph were 5.02℃ and 131.2 degree-days. The lethal temperatures were estimated as 33.9 and 32.5℃ with Lactin 2 and Logan 6 non-linear models, respectively. Mean generation time (from 78.4 to 11.8 d) decreased with increasing temperatures (from 7.5 to 27.5℃). The highest net reproductive rate (77.4) was observed at 20℃. The highest intrinsic rates of population increase (0.282) and shortest population doubling times (2.07 d) were recorded at 25℃.
Management of fall armyworm, Spodoptera frugiperda on Nigeria maize field to attain Food Security
Samuel A. Fasusi,Ji-Min Kim,Sungtaeg Kang 한국국제농업개발학회 2022 한국국제농업개발학회 학술대회 Vol.2022 No.09
Maize is an important cereal crop widely grown in all of Nigeria’s agroecology based on its economic and food values. This has led to its optimum production with Nigeria ranking top 12th maize producer in the world. Presently, the fall armyworm (FAW), Spodoptera frugiperda is considered a potential threat to food security in Nigeria due to its devastating feeding pattern on maize and its wide host range. Its invasive and high dispersal nature enhances its spread from its first reported state (Oyo) in early 2016 to the entire 36 states of Nigeria by the year 2018. It accounts for averagely an estimated 34% or more yield reduction in Nigeria’s maize field, hence, a need for an efficient management approach. Although most farmers rely on the use of insecticide, it is found ineffective because of the inaccessible location of FAW in maize. This study was carried out to investigate the different management approaches adopted in Nigeria to control FAW and its impact on the insect pest population. Conventional measures such as planting improved seeds, avoidance of late planting, and polyculture to increase the natural enemy’s population have been used but with limited control of FAW. Maize lines with aflatoxin resistance or transgenic Bt-maize are found resistant to FAW. Botanicals such as neem extract lowered the percentage of leaf area damage, incidence of FAW larva infestation, and the number of larvae. It is difficult to curtail the menace of FAW through one control method, hence, the need for an integrated approach
Xu, Jiu Liang,Shin, Jeong-Sook,Park, Soo-Kwon,Kang, Sungtaeg,Jeong, Soon-Chun,Moon, Jung-Kyung,Choi, Yongsoo Elsevier Science B.V., Amsterdam. 2017 Vol. No.
<P>Wild soybeans are considered a potential resource for soybean domestication and an important source of genetic diversity for soybean crop improvement. Understanding metabolite-caused bioactivity differences between cultivated and wild soybeans is essential for designing a soybean with enhanced nutritional traits. In this study, the non-targeted metabolic profiling of 26 soybean varieties, 15 wild black soybeans (WBS) and 11 cultivated black soybeans (CBS), using liquid chromatography-mass spectrometry (LC-MS) in combination with multivariate analysis revealed significant differences in 25 differential metabolites. Among these, the soyasaponins Ab and Bb were found to be characteristic metabolites expressed more substantially in CBS than in WBS. Three different antioxidant assays and correlation analysis identified major and minor antioxidants that contributed to WBS having an antioxidant activity 4- to 8-fold stronger than that of CBS. Epicatechin, procyanidin B2, and cyanidin-3-O-glucoside were identified by both association analysis and the online LC-ABTS radical scavenging assay as being major antioxidants.</P>
Fine mapping the UV-B resistance gene in soybean using 180K Axiom SoyaSNP assay
Sungmin Kim,Ju Seok Lee,Sumin Park,Kyungryun Kim,Mijung Cho,Eunsil Kim,Bo-Keun Ha,Sungtaeg Kang 한국육종학회 2015 한국육종학회 심포지엄 Vol.2015 No.07
The depletion of stratospheric ozone has resulted in increased amount of ultraviolet-B radiation (UV-B: 280-320 nm) reaching the Earth’s surface and could cause significant biological effect in plants. In this study, putative quantitative trait loci (QTL), which is responsible to UV-B resistance in soybean, was identified using recently developed high-density 180K Axiom SoyaSNP genotyping array. A population of 115 recombinant inbred lines (RILs) derived from a cross between susceptible Keunolkong and resistant Iksan 10 was analyzed. A total 8,970 polymorphic SNP markers were used to construct linkage map. The both parents and RILs were grown with supplemental UV-B radiation in a greenhouse condition. Three categories of UV-B induced morphological damage, degree of leaf chlorosis, leaf shape change, and total plant damage were evaluated. Using composite interval mapping analysis, one major QTL associated with all of the phenotypic traits was detected on 7.7cM of soybean chromosome 7 with 22 of LOD score accounting for about 60% of phenotypic variance. Also, the allele from Iksan 10 were responsible for the UV-B resistance. Thus, the UV-B resistance QTL on chromosome 7 from Iksan 10 was designated to qUVBR1, corresponding to 30kb on the Williams 82 genome assembly (Glyma2.0) including 7 candidate genes. This result could be useful in breeding for new foxglove aphid resistant soybean cultivars. In addition, these results provided useful information not only for marker-assisted selection for UV-B resistance soybean, but also for the future identification of putative candidate genes, responsible for UV-B resistance in soybean.