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RISS 인기검색어
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FOM 시스템을 활용한 제조현장 에너지·성과 데이터 통합 수집 구조 설계 및 적용 사례
이상훈(S. H. Lee),김수영(S. Y. Kim) 한국생산제조학회 2025 한국생산제조학회 학술발표대회 논문집 Vol.2025 No.7
본 연구는 제조현장에서의 에너지 효율성과 운영 성과를 동시에 향상시키기 위한 통합 데이터 수집 구조를 제안한다. 기존의 공장에너지관리시스템(FEMS)은 주로 전기사용량의 실시간 모니터링에 초점을 맞추고 있으나, 생산성, 매출, 환경성과와의 연계 수준은 아직 미흡한 단계에 머물러 있다. 이를 보완하기 위해 본 연구는 FOM(Factory Operation Management) 시스템을 기반으로 전기사용량, 전력사용요금, 이산화탄소 배출량, 생산량, 매출액의 다섯 가지 항목을 재정의하고 통합 분석 구조를 설계하였다. 특히 본 연구의 핵심은 4M1E(Man, Machine, Material, Method, Energy) 분석 체계를 적용하여, 각 항목을 해당 운영 영역에 연계함으로써 에너지 사용과 공장 성과 간의 상호작용을 다차원적으로 해석할 수 있도록 한 점이다. 실제 사례로 S산업㈜의 2024 년 월별 데이터를 분석한 결과, 생산성 저하, 에너지 비효율, 탄소 배출 과다 등의 문제를 정량적으로 도출할 수 있었으며, 항목 간 상관분석과 원단위 비교를 통해 개선 방향을 제시할 수 있었다. 분석 결과는 FOM 시스템이 단순한 생산성 관리 도구를 넘어, 에너지 및 지속가능성을 고려한 통합 운영 플랫폼으로서의 확장 가능성을 보여준다. 제안된 프레임은 향후 제조현장의 에너지 최적화 및 운영 개선 전략 수립을 위한 실용적인 기반이 될 수 있다.
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이인혁(I-H Lee),송성근(S-G Song),이상훈(S-H. Lee),박성준(S-J Park),남해곤(H-G Nam),정해덕(H-D Chung),장영학(Y-H Chang) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-
In this paper, we proposed the electric circuit using one common arm of H-Bridge Inverters to reduce the number of switching component in multi-level PWM inverter combined with H-Bridge Inverters and Transformers. and we proposed the switching method that can be same rate of usage at each transformer. Also, we tested the proposed prototype inverter to clarify the proposed electric circuit and reasonableness of control signal.
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PCR 기법을 이용한 한국재래산양의 α s2-casein 유전자의 특성
상병찬(B . C . Sang),김지애(J . A . Kim),이상훈(S . H . Lee),서길웅(G . W . Seo),한성욱(S . W . Han) 한국축산학회 2000 한국축산학회지 Vol.42 No.4
This study was performed to provide the basic data for preservation and improvement of genetic resources according to finding genetic construction obtained from the analysis of genetic characteristics of α_(S2-) casein gene in Korean Native goat using PCR-RFLP. This study confirmed the amplified product of 1.3kb fragment obtained from the amplification of a α_(S2-)casein loci by PCR. The frequency of a α_(S2-)casein genotype in Korean Native goat was 100% for AA type and the frequencies of a α_(S2-)casein genotype in Saanen were 80 and 20% for AA and AB genotypes. The frequency of a α_(S2-)casein A allele was 1.000 in Korean Native goat, and the frequencies of a α_(S2-)casein A and B alleles were 0.900 and 0.100 in Saanen, respectively. The nucleotide sequence of a α_(S2-)casein gene of Korean Native goat was 99.0% homology with 12 nucleotide sequences difference of that of goat reported in GeneBank(AJ238965.1, AJ238967.1) and was 95.0% homology with 57 nucleotide sequences difference of that of Holstein reported in Gene Bank(M94327). Therefore, this study of molecular genetic characteristics by the analysis of genetic polymorphisms and sequences for a α_(S2-)casein gene should be used as basic data for preservation and improvement of genetic resources in Korean Native goat breeding.
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저장벽 양자우물구조와 비태칭 패브리 - 페로 공명기 구조에 의한 고성능 2×4 S-SEED Array 구현
권오균(O. K. Kwon),최영완(Y. W. Choi),김광준(K. J. Kim),이일항(E. H. Lee),이상훈(S. H. Lee),원용협(Y. H. Won),유형모(H. M. Yoo) 한국광학회 1994 한국광학회지 Vol.5 No.1
GaAs/Al_(0.04)Ga_(0.96)As 다중양자우물 구조를 이용한 반사형 PIN 다이오우드 S-SEED의 설계에 있어 낮은 동작전압, 높은 포화에너지 및 높은 반사율 on/off 강도비를 얻고자 저장벽 양자우물구조와 비대칭 페브리-페로 공명구조를 결합하였다. 2×4 array를 구성하는 S-SEED들은 역방향 동작전압 5V에서 평균적으로 13 이상의 반사율 on/off 강도비 (CR)와 약 24%의 반사율차 (ΔR) 및 91% 이상의 광쌍안정폭 (Δ)을 나타내었다. 공명구조를 이용함으로서 PIN 다이오우드 진성영역내의 양자우물의 주기수를 줄일 수 있어 외부동작전압 없이도 CR~4.7, R~9.2%, ~22%의 향상된 무전압 광쌍안정 동작특성을 얻었다. We designed and fabricated a 2×4 symmetric self electro-optic effect device array using GaAs/Al_(0.04)Ga_(0.96)As extremely shallow quantum wells grown by a molecular beam epitaxy. By employing ESQW and asymmetric Fabry-Perot cavity structure simultaneously, we improved the performances of S-SEED such as on/off contrast ratio (CR), reflectivity change (ΔR), and optical bistability loop width (Δ). The average values of the elements of the 2×4 S-SEED array were CR~13.1, R~24%, and Δ~91%. It was found that the AFP cavity structure enhances the self-biased optical bistability in ESQW-SEED under no external bias. That is due to the decreased intrisic region thickness in AFP-SEED structures, and which increases the built-in electric fields. The zero-biased S-SEED showed CR of ~4.7, R~9%, and Δ~22%.
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RAPD기법을 이용한 축우의 유전적 다형성과 유사도 분석
이상훈,서길웅,권일,성창근,김선균,상병찬,Lee, S.H.,Seo, K.W.,Kwon, I.,Sung, C.K.,Kim, S.K.,Sang, B.C. 충남대학교 농업과학연구소 1999 Korean Journal of Agricultural Science Vol.26 No.2
This study was carried out to investigate the difference and genetic similarity at the level of molecular genetics. Genomic DNA was extracted from blood of Holstein, Korean cattle, Charolais, and hybrid between Korean cattle and charolais and RAPD(random amplified polymorphic DNAs) was analyzed by PCR(polymerase chain reaction). After genetic similarity value from different breeds are analyzed, genetic similarity was estimated by UPGMA(unweighted pair-group method using average). The results obtained from this study can be summarized as follows: 1. When genomic DNA which was extracted from different breeds was subjected to electrophoresis on 1.5% agarose gel, bigger than 12.2kb was appeared. Ratio by absorbance of $A_{260}/A_{280}$ was 1.75~2.10, indicating that genomic DNA was quite pure for RAPD analysis. 2. Different band patterns by RAPD were appeared according to the breeds in cattle. The best primer used to distinguish Holstein from other breeds was 5'-GAC CGC TTG T-3'. 3. A 340bp fragment was amplified in $33.0^{\circ}C$ of annealing temperature for the Holstein and Charolais breeds, but any amplification was not occurred in this annealing temperature for Korean cattle and hybrid. In addition, a 340bp fragment was amplified in $37.5^{\circ}C$ of annealing temperature for the Holstein and Korean cattle, but any amplification was not occurred in this annealing temperature for Charolais and hybrid. For the reaction of PCR. $37.5^{\circ}C$ and $33.0^{\circ}C$ of annealing temperature was shown to be best for genetic marker identification from Holstein, Charolais, and hybrid between Korean cattle and Charolais. 4. When genetic similarity from different breeds are analyzed at the both temperature of $33.0^{\circ}C$ and $37.5^{\circ}C$, the genetic similarity value of Holstein and Korean cattle, Holstein and Charolais, Korean cattle and Charolais, and Korean cattle and hybrid were 0.666~0.777, 0.615~0.666, 0.400~0.461 and 0.857~0.888, respectively. 5. It could be concluded that different breeds are capable of distinguishing by RAPD used random primer 5'-GAC CGC TTG T-3', genetic similarity from different breeds was appeared the higher genetic similarity value of Korean cattle and Charolais than that of Holstein between Korean cattle and Charolais by UPGMA.
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