유전 및 육종 : 홀스타인 젖소의 주요 경제형질에 대한 보증종모우와 후보종모우의 능력 비교

최유림 ( You Lim Choi ),조광현 ( Kwang Hyun Cho ),전병순 ( Byeong Soon Jeon ),백광수 ( Kwang Soo Baek ),박병호 ( Byoung Ho Park ),임현주 ( Hyun Joo Lim ),김효선 ( Hyo Sun Kim ),조주현 ( Joo Hyun Cho ),안병석 ( Byeong Seog Ahn ) 한국동물자원과학회 ( 구 한국축산학회 ) 2009 한국축산학회지 Vol.51 No.2

머신러닝을 활용한 전기차 충전기 입지선정 최적화

최유림(You-Lim Choi),임성현(Seung-Hyeon Im),정한수(Han-Soo Jung),김승모(Seung-Mo Kim),남재원(Jae-Won Nam) 대한전자공학회 2023 대한전자공학회 학술대회 Vol.2023 No.6

Electric vehicles (EVs) are considered a great alternative for reducing carbon emissions, and South Korea is striving to increase the penetration rate of EVs through supportive policies. However, the number of EV chargers is insufficient compared to the increasing penetration rate of EVs. Given the high cost and the requirement for high voltage, selecting an accurate installation location is crucial. Therefore, we propose a machine learning-based approach to predict the appropriate location for EV chargers using data that influences the selection of charger locations on Jeju Island. Additionally, we present a method for adjusting various machine learning conditions to enable precise selection of EV charger locations with high prediction accuracy.

집단에너지설비의 최적운영을 반영한 신재생에너지원의 열적투입한계용량 산정

임태훈(Tae-Hun Lim),이혜선(Hye-Seon Lee),정재훈(Jea-Hoon Jung),최유림(You-Rim Choi),한상화(Sang-Hwa Han),김용하(Yong-Ha Kim) 한국조명·전기설비학회 2020 조명·전기설비학회논문지 Vol.34 No.1

In response to recent energy and environmental issues, countries around the world have announced climate change policies and are working to reduce greenhouse gases. As a result, many investments are being made to expand renewable energy. Considering domestic and foreign policies and changes in the environment, it is considered to be the most popular in the future, and district heating and cooling facility that combines the energy facilities of existing groups and renewable energy sources. Therefore, in this paper, considering the optimal operation of the heat load of the energy equipment of the existing group, when new thermal load is introduced and is in charge of supplying the heat load from the existing district heating and cooling facility, renewable thermal limit capacity algorithm for calculating the heat input limit capacity is presented.

미시적 접근법을 이용한 국내 업종별 정전비용 산정

임태훈(Tae-Hun Lim),정복만(Bok-Mahn Jung),정재훈(Jea-Hoon Jung),최유림(You-Rim Choi),김용하(Yong-Ha Kim) 한국조명·전기설비학회 2019 조명·전기설비학회논문지 Vol.33 No.11

Estimation of interruption costs is indispensable to determine the optimal facility investment scale and optimum reliability level at the time of distribution system planning. For this, in this paper, we calculate interruption costs by microscopic method, which reflects the pattern of power consumption by customers. For continuity with past research results, based on “Assessment of Interruption Costs on the Industry Load through Using the Microscopic Method”[1], we conducted a direct visit survey on five industries that are practically applied in NDIS(New Distribution Information System) of KEPCO: industry, commercial companies, companies and institutions, agricultural fishery products, and houses. We obtained 2,500 valid data and performed Tobit Regression based on this data to calculate domestic interruption costs in and significant data was produced when compared with the results of the interruption costs in 2008 and 2013.

유전 및 육종 : 국내 두록종 농장간 유전적 연결성 추정

조충일 ( Chung Il Cho ),최재관 ( Jae Kwan Choi ),박병호 ( Byoung Ho Park ),김시동 ( Si Dong Kim ),권오섭 ( Oh Sub Kwon ),최유림 ( You Lim Choi ),최연호 ( Yun Ho Choy ) 한국동물자원과학회(구 한국축산학회) 2012 한국축산학회지 Vol.54 No.5

돼지에서 농장간 유전적 연결성은 다른 농장간 추정 육종가의 비 교를 위해 매우 중요한 지표이다. 본 연구에서는 유전적 연결고리 가 존재하는 6개의 두록 농장에서 수집된 24,971두의 90 kg 도달 일령에 대한 검정자료 및 456,697두의 혈통정보를 이용하였으며, 농장간 연결성은 연결율 수식에 의해 계산하였다. 분석 결과, 두록 농장간 교류를 위하여 총 8두에서 생산된 정액이 사용된 것으로 나타났다. A 농장은 8두의 종돈을 통하여 나머지 5개 농장과 모두 종돈 교류가 이루어졌으며, B-E 농장의 경우 F 농장을 제외한 나머 지 4개 농장과의 종돈 교류가 있었으며, F 농장은 오직 A농장과 혈연적인 연결이 존재하는 것으로 나타났다. 그러나 F 농장은 A농 장과의 연결을 통하여 나머지 다른 농장과 연결성을 갖게 되어 두 록 6개 농장간 연결성이 존재하는 것으로 나타났다. 또한 농장간 연결율이 가장 높은 값은 A농장과 C 농장간의 91.7%로 6개의 두 록 농장 중 농장간 연결율이 가장 높았으며, 반대로 D농장과 F 농 장에서 65.1%로 가장 낮은 연결율을 나타냈다. 국내 6개 두록 종 돈장간 연결율은 65% 이상으로 고도의 유전적 연결성이 존재하는 것으로 나타나 단일 집단의 개념에서 유전평가가 가능하며, 이를 이용하여 농장내외 개체간 상대적 비교를 통해 우수 종축을 선발할 수 있을 것으로 사료된다. The genetic connectedness between herds is an essential requirement to make robust across-herd estimation of the breeding values of the animals. In this study, genetic connectedness between herds was evaluated by a connectedness rating method. A total of 24,971 records of days to 90 kg (D90KG) of the pigs on performance testing programs collected from six herds (labeled from ``A`` to ``F``) of Duroc breed along with pedigree information comprising 456,697 families were used. Results showed that a total of eight boars were used for semen exchange programs among participant farms. Herds ``A`` through ``E`` were found strongly connected among them. But ``F`` herd was genetically connected strongly only with ``A`` herd. The highest average connectedness rating was 91.7% between ``A`` herd and ``C`` herd. The lowest average connectedness rating was 65.1% between ``D`` and ``F``. The concept of a single genetic group comprising six Duroc herds studied is meaningful due to high connectedness rates among them. Therefore, with this high genetic ties between participant Duroc farms, the more accurate genetic evaluation would be possible.

재래흑염소와 교잡종 염소의 Monomorphic SNP 분석을 통한 유전적 다양성과 집단구조의 비교 및 검증

김관우(Kwan-Woo Kim),이진욱(Jinwook Lee),이은도(Eun-Do Lee),이성수(Sung-Soo Lee),최유림(You-Lim Choi),임현태(Hyun-Tae Lim),김유삼(Yousam Kim),이상훈(Sang-Hoon Lee) 한국생명과학회 2020 생명과학회지 Vol.30 No.11

본 연구는 우리나라 고유의 재래흑염소 집단인 당진, 장수, 통영 및 경상대 계통과 교잡종 염소 계통 또는 해외품종의 개체 식별을 위한 유전적 다양성과 관계 조사 및 검증을 위해 수행하였다. 각 염소 집단에 존재하는 Monomorphic SNP를 수집한 이후 공통적으로 존재하는 SNP 133개를 선발하여 분석에 이용하였다. Monomorphic SNP 133개를 통한 재래흑염소와 교잡종 염소의 유전적 구조 차이를 나타냈으며, 주성분 분석 결과 재래흑염소와 교잡종 염소가 명확히 구분되는 것으로 나타났다. 또한, 참조집단 이외의 70두(Native Korean goat = 24, Cross breed = 46)로 구성된 검증집단을 분석한 결과 국내 재래흑염소 계통의 참조집단과 동일한 유전적 구조를 나타냈으며, 교잡종 염소의 경우 참조집단의 일부 유전적 구성을 공유하는 것으로 나타났다. 국내 재래흑염소의 경우는 하나의 군집을 형성한 반면 해외 품종 및 교잡종 계통의 경우 재래흑염소 계통에 비해 넓게 퍼져 군집을 형성하는 것으로 나타났다. 따라서, 본 연구 결과는 국내 재래흑염소 유전자원 집단을 보존을 위한 기초자료로 활용하고 추후 유전적 다양성을 고려한 염소의 개량을 위한 기초자료로 유용하게 활용 할 수 있을 것으로 판단된다. This study was conducted to analyze the genetic diversity and relationships that discriminate between Korean native black goat populations (Dangjin, Jangsu, Tongyoung, and Gyeongsang National University strains) and crossbred goats. Monomorphic single nucleotide polymorphisms (SNPs) in each strain were collected, and 133 common SNPs were selected for analysis. These 133 monomorphic SNPs showed differences in the genetic structure of the Korean native black goat and crossbred goats, and results from the principal component analysis (PCA) showed that the two can be clearly separated. Furthermore, analysis of the validation population comprising 70 individuals (Korean native black goats, n = 24; crossbred goats, n = 46) with the reference population showed that Korean native black goat strains and the reference population have the same genetic structure, and the crossbred goats shared only part of the genetic structure with the reference population. The result of the PCA analysis showed that the Korean native black goat strains form one population, whereas the foreign strains form another population which is more widely dispersed than the Korean native black goat strains. Thus, the results from this study can be used as baseline data for the conservation of genetic resources of Korean native black goat communities through utilization of monomorphic SNPs and for the introduction of exotic species for further improvement in genetic diversity. This study can also help reduce unnecessary inbreeding and gene flow between native strains.

주파수 안정도 측면에서 풍력 및 태양광발전 투입을 위한 ESS 용량 산정에 관한 연구

김용하(Yong-Ha Kim),박종민(Jong-Min Park),이혜선(Hye-Seon Lee),한상화(Sang-Hwa Han),정재훈(Jea-Hoon Jung),최유림(You-Rim Choi),임태훈(Tae-Hun Lim) 한국조명·전기설비학회 2019 조명·전기설비학회논문지 Vol.33 No.2

In the future, wind power and solar power, which are major renewable energy sources in Korea, have intermittent output characteristics. Accordingly, if the proportion of renewable energy sources input to the power system increases, various problems arise in adjusting power supply and demand in real time, and the quality of electric power may also be degraded. Therefore, the capacity of an energy storage device (ESS) was calculated in this paper to accommodate all planned new and renewable energy sources to solve problems that may arise in the power system under the premise of “A Study on the Wind &Solar Power Acceptable Capacity of Korea Electric Power System on Frequency Stability”, “A Study on the Local Characteristics by Wind&Solar Power on Korea Electric Power System”, and “A Study on the Wind &Solar Power Acceptable Capacity of Korea Electric Power System according to System Operation Reserve”.

생쥐에 있어서 單一害球가 分離된 受精卵의 移植에 의한 새끼生産에 관한 硏究

崔有林,全益秀,金宣宜,崔光洙,朴修奉,辛明宰 慶北大學校農業科學技術硏究所 1991 慶北大農學誌 Vol.9 No.-

本 연구는 생쥐의 4細胞期胚에서 하나의 割球를 뽑아내는 새로운 割球分離技術인 biopsy에 대한 효율성과 分離된 受精卵과 分離한 割球의 생존성 및 새끼생산율을 검토한 結果이다. 그 結果를 要約하면 다음과 같다. 1. 4細胞期胚에서 分離한 單一割球와 4細胞期胚를 M2 배양액에 배양한 結果, 單一割球는 82.6%가 영양배엽을 형성한 割球로 發生하였고 4細胞期胚로 89.5%가 胚盤胞期胚로 發生하였다. 2. 4細胞期胚를 biopsy하여 하나의 割球가 分離된 受精卵과 대조구인 4細胞期胚를 M2배양액에서 배양한 결과 각각 83.3%와 90.4%가 胚盤細胞胚로 發生하였다. 3. Biopsy하여 4細胞期胚에서 分離한 單一割球와 대조구인 4細胞期胚에서 4개의 割球로 분리한 單一割球를 M2 배양액에서 배양한 결과 각각 80.8%와 83.3%가 영양배엽을 형성한 割球로 發生하였다. 4. 4細胞期胚에서 하나의 割球를 뽑아낸 受精卵과 대조구인 4細胞期胚를 수란생쥐에 이식한 결과 각각 36.0%와 48.6%의 새끼쥐 생산率을 얻었다. The study was carried out to investigate the viability and the offspring production rate of single blastomeres and biopsied 4-cell mouse embryos and, also to examine the efficiency of biopsy. The results obtained are summerised as follows : 1. The separated blastomeres from 4-cell embryos and intact 4-cell embryos which were cultured in Medium 2 were developed to trophoblastic vesicle and blastocyst embryo by 82.6% and 89.5%, respectively. 2. The biopsied embryos from 4-cell embryos and intact 4-cell embryos which cultured in Medium 2 were developed to blastocyst embryo by 83.3% and 90.4%, respectively. 3. The biospied blastomeres and the separated blastomeres from 4-cell embryos which were cultured in Medium 2 were developed to trophoblastic vesicle by 80.8% and 83.3%, respectively. 4. The biopsied embryos from 4-cell embryos and intact 4-cell embryos were transferred to recipients, and the offspring rate was 36% and 48.6%, respectively.