DGS-200(DAMA-SCPC Ground System) 위성통신 시스템에서의 신호 서비스 구성에 관한 연구 및 구현

김내수(Nae Soo Kim) 한국통신학회 1994 한국통신학회 학술대회논문집 Vol.1994 No.11

유전 및 육종 : 한우의 유전체 표지인지 활용 개체 혈연관계 추정

김내수 ( Nae Soo Kim ),이득환 ( Deuk Hwan Lee ),조충일 ( Chung Il Cho ) 한국동물자원과학회 ( 구 한국축산학회 ) 2010 한국축산학회지 Vol.52 No.5

한우의 유전체 전장의 정보를 Illumina BeadArrayTM Bovine SNP50 assay를 이용하여 단일염기다형 현상을 조사한 결과, 유전적 다양성을 보이는 좌위가 약 32,567 좌위 이상에서 다양성을 보이고 있었으며 약 5,554 좌위에서 다양성이 조사되지 않았다. 이는 조사된 자료의 가계집단의 수가 크게 제한되었기 때문에 기인될 수 있으며 또 다른 원인으로는 한우 종축집단의 크기가 작을 수 있다는 현상을 반증한다고 사료된다. 유전분석의 기초가 되는 혈통기록에 의한 개체간 혈연관계를 유전체 정보에 의한 혈연관계와 비교하여 본 결과, 유전체 정보에 의한 혈연관계의 크기가 혈통기록에 의한 혈연관계보다 좀 더 정확하게 추정될 수 있다는 장점이 있으며 혈통기록상의 오류로 그릇된 혈연관계의 크기를 유전체 정보를 통하여 보완할 수 있다는 장점이 있다. 이러한 장점을 활용하면 유전체정보를 이용한 유전능력 평가의 정확성을 크게 향상시킬 수 있을 것으로 사료되었다. The emergence of next-generation sequencing technologies has lead to application of new computational and statistical methodologies that allow incorporating genetic information from entire genomes of many individuals composing the population. For example, using single-nucleotide polymorphisms (SNP) obtained from whole genome amplification platforms such as the Ilummina BovineSNP50 chip, many researchers are actively engaged in the genetic evaluation of cattle livestock using whole genome relationship analyses. In this study, we estimated the genomic relationship matrix (GRM) and compared it with one computed using a pedigree relationship matrix (PRM) using a population of Hanwoo. This project is a preliminary study that will eventually include future work on genomic selection and prediction. Data used in this study were obtained from 187 blood samples consisting of the progeny of 20 young bulls collected after parentage testing from the Hanwoo improvement center, National Agriculture Cooperative Federation as well as 103 blood samples from the progeny of 12 proven bulls collected from farms around the Kyong-buk area in South Korea. The data set was divided into two cases for analysis. In the first case missing genotypes were included. In the second case missing genotypes were excluded. The effect of missing genotypes on the accuracy of genomic relationship estimation was investigated. Estimation of relationships using genomic information was also carried out chromosome by chromosome for whole genomic SNP markers based on the regression method using allele frequencies across loci. The average correlation coefficient and standard deviation between relationships using pedigree information and chromosomal genomic information using data which was verified using a parentage test andeliminated missing genotypes was 0.81±0.04 and their correlation coefficient when using whole genomic information was 0.98, which was higher. Variation in relationships between non-inbred half sibs was 0.22±0.17 on chromosomal and 0.22±0.04 on whole genomic SNP markers. The variations were larger and unusual values were observed when non-parentage test data were included. So, relationship matrix by genomic information can be useful for genetic evaluation of animal breeding.

위성통신 시스템에서 S/Aloha 프로토콜 구현을 위한 추계적 페트리 네트 모델링

김내수(Nae-Soo, Kim),김기원(Gi-Weon Kim),송정길(Jung-Gil, Song) 한국통신학회 1998 한국통신학회 학술대회 및 강연회 Vol.1998 No.7

전동기 구동 시스템에서의 적분기 포화 방지를 위한 새로운 안티-와인드업 기법

조내수(Nae-Soo Cho),김우현(Woo-Hyun Kim) 대한전기학회 2009 전기학회논문지 P Vol.58 No.3

In a high performance motor driving system, PI controller which is simple implementation is frequently used. But, PI controller has various problems because of an integrator saturation. Therefore, the various methods of an anti-windup have been studied to solve such problems. But, conventional anti-windup methods have still problem with large overshoot and long settling time in the driving conditions. In this paper, to improve such problem, it is proposed a new anti-windup strategy. Using LPF and PI controller, it is improved an overshoot and reduced settling time. Simulation results have verified usefulness of the proposed method using MATLAB/Simulink.

표고 재배(栽培) 폐재(廢材)의 사료화(飼料化)에 관(關)한 연구(硏究)

김법회,이택원,민두식,김내수,Kim, Bub-Whoe,Lee, Teck-Won,Min, Du-Sik,Kim, Nae-Soo 한국목재공학회 1978 목재공학 Vol.6 No.1

In order to determine the feeding value of t:1e waste wood of Lentinus eddodes, the waste wood was milled and treated with $Ca(OH)_2$ and cellulase, then raw waste wood and the treated waste wood were fed to broiler chicken and Korean native goates. The results obtained were as follows; 1. The chemical composition of the waste wood was c. protein 2.26%. c. fat 2.57%. c. fiber 44.60 and c. ash 5.58%. No differences were detected between the raw waste wood and $Ca(OH)_2$ or cellulase treated waste wood in chemical composition. 2. In amino acid composition. no cystine and methionine was showed, but trace amount of Vitamin A, $B_1$, and $B_2$, and cholin chloride were detected. 3. Trichoderma viride SANK. No. 16374 was used to decompose the cellulose. 4. In broiler performance, when waste wood meal was subsituted for 5% wheat bran, no adverse effect was showed on weight gain, feed in take and feed efficiency. But $Ca(OH)_2$ and cellulase treated waste wood meal could be subsituted for 8% wheat bran. 5. In Korean native goat performance, feeding waste wood meal subsituted by 50% various bran (25% defatted rice bran and 25% barley bran) had no adverse effect on growth and feed efficiency. 6. Considering the above results, though the waste wood meal could be replaced to part of various bran, there was a bottle-neck to process the waste wood. The waste wood of Lentinus edodes was little feeding value on bed of ruminant.

위성 ATM 망에서의 전송성능 개선 방안 및 지구국 구조

김내수(Nae-soo Kim),최동준(Dong-jun Choi),채종석(Jong-suk Chae) 한국통신학회 1997 한국통신학회 학술대회논문집 Vol.1997 No.11

사료자원 개발에 관한 연구 ( 효모에 의한 발효우분의 사료화에 관한 연구 )

김법회,이택원,김내수 ( Bub Hoe Kim,Taeck Won Lee,Nae Soo Kim ) 한국축산학회 1979 한국축산학회지 Vol.21 No.6

As a series of the research for converting animal excreta into feedstuffs, feed substitutes by fermenting cattle waste was processed as follows: Active Dry Yeast and Yellow Koji were purchased at market, from which strains were separated. Dried cattle wastes mixed with same amount of corn flour were boiled with steam, inoculated with Active Dry Yeast and Yellow Koji, fermented at 30℃ for 48 hours and then dried in shade. In order to observe the optimum level of this feed substitute for mixed brans (barley bran and wheat bran was mixed at same rate in weight), 16 heads of rearing fattening piglets (12 of Landrace and 4 of tri-hybrids) were fed 4 different levels of experimental feed, such as 0, 10, 20 and 30 % by weight, for 4 months. The results obtained were summarized as follows: 1. Active Dry Yeast was classified as Saccharomyces cerevisiae and Yellow Koji as Aspergillus oryzae. 2. One gram of experimental feed was contained 5 to 6 × 10^9 cells of yeast. 3. Comparing the contents of raw cattle waste, the fermented experimental feed was shown increasing value of crude protein, crude fiber and crude ash while nitrogen free extract was decreased. 4. Fermented cattle waste contained more amino acid than that of raw material, especially lysine, methionine, histidine and arginine were doubled. 5. The weight of raw material was reduced by 5 - 6% during the process of fermentation. 6. During the first half period of fattening, substitution with experimental feed showed no bad effects upon fattening up to 30%. However 20 or 30% substitution of experimental feed showed remarkable decreasing value of body weight gain (p$lt;0.01) during the later half period of fattening. 7. No significance difference was observed in the amount of feed intake among the experimental lots. This seem to he that the fermented cattle waste had fair palatability for pig. 8. 10% substitution of experimental feed was observed better feed efficiency than that of control, bat 20% or 30% substitution was worse than control. Considering the above results, the fermented cattle waste could be substituted for various bran during the first period of fattening up to 30%, and later half period by 10%.

차세대 위성방송 DVB-S2 기술 및 시장 전망

김내수(Nae-Soo Kim) 한국통신학회 2004 한국통신학회 학술대회논문집 Vol.2004 No.11

위성 ATM 망에서 TCP/IP 트래픽의 전송성능 및 품질평가

김내수(Nae Soo Kim),송정길(Jung Gil Song) 한국정보처리학회 2000 정보처리학회논문지 Vol.7 No.8

In order to provide the TCP/IP based applications over satellite ATM network, more detailed affects and analysis for the transmission performance according to the long propagation delay and burst error characteristics of satellite link are required. And its performance objectives should be proposed. In this paper, we implemented the real terrestrial/satellite ATM LANE(LAN Emulation) using 2Mbps KOREASAT link, and analyzed and evaluated the affects of transmission performance of TCP/IP traffic and FTP with changing the Eb/No of satellite channel, TCP socket buffer size and the sending message size. In addition we performed the analysis of transmission quality and the transfer message characteristics for IPoA(IP over ATM) videoconference service. From this study, we can see that TCP total performance is also increased when TCP socket buffer size is increased, but the real maximum transmission rate can not reach to a theoretical object value because of the limited maximum window size and the error characteristic of satellite channel. Also TCP/IP over ATM services are almost impossible because the maximum transmission performance is dropped to 50% below at Eb/No=6dB over 2Mbps satellite link. In case of FTP with the small size of file, we can also see that the slow start mechanism of TCP/IP is not proper in point of the efficiency of bandwidth utilization because file transfer is completed before to reach at the maximum transmission rate. Furthermore we can see that the video image of IPoA videoconference service is almost frozen at Eb/No=6.5dB below, and the mean message transfer time is exceeded to the required ITU objectives, which is impossible to provide the service.

야생식생군락 생태계 모니터링을 위한 사물인터넷 기반의 저전력 무선 센서네트워크 시스템에 관한 연구

김내수(Nae Soo Kim),이계선(Kye seon Lee),류재홍(Jae hong Ryu) 한국IT서비스학회 2015 한국IT서비스학회지 Vol.14 No.1

This paper presents a study on the Internet of Things based low-power wireless sensor networks for remote monitoring of wildlife ecosystem due to climate change. Especially, it is targeting the wild vegetation communities ecological monitoring. First, we performed a pre-test and analysis for selecting the appropriate frequency for the sensor network to collect and deliver information reliably in harsh propagation environment of the forest area, and selected for sensors for monitoring wild vegetation communities on the basis of considerations for selecting the best sensor. In addition, we have presented the platform concept and hierarchical function structures for effectively monitoring, analyzing and predicting of ecosystem changes, to apply the Internet of Things in the ecological monitoring area. Based on this , this paper presents the system architecture and design of the Internet of Things based low-power wireless sensor networks for monitoring the ecosystem of the wild vegetation communities. Finally, we constructed and operated the test-bed applied to real wild trees, using the developed prototype based on the design.