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천연가스 민간 직도입 확대에 따른 석유화학산업의 도시가스 소비 변화 연구
강병욱 산업연구원 2022 산업연구(JIET) Vol.6 No.1
본 논문은 석유화학산업의 천연가스 민간 직도입 확대가 기존 도시가스 수요함수에미치는 영향을 분석한다. 강병욱(2019), 박철웅·박철호(2019a, 2019b) 등 산업용 도시가스 수요함수에 관한 주요 선행연구에서 특징적인 부분은 2010년대 중반 이후 석유화학산업 도시가스 수요함수의 상대가격 탄력도가 상당히 상승했다는 것이다. 이에 대한 주요 요인으로 지목된 것은 석유화학업 내의 듀얼보일러 보급 확대와 원료용 도시가스소비 확대였다. 본 논문에서 분석한 결과에서도 석유화학산업 도시가스 수요의 상대가격 탄력도는 2010년 즈음까지 1 정도에 머물렀으나 2010년 중반을 지나면서 탄력도는3 정도까지 대폭 상승했다. 그러나 새롭게 발견된 것은 2018년 이후 석유화학업의 직도입 천연가스 소비 급증과 함께 상대가격 탄력도는 다시 0.3 이하로 급격히 하락했다는점이다. 이는 석유화학산업 내에서 가격탄력도가 높은 성격의 도시가스 소비 물량이 직도입 천연가스로 대체되었기 때문으로 분석된다. 따라서 도시가스 소비에 있어서 가격민감도가 높은 소비처의 경우, 기존 도시가스 소비를 민간 직도입 천연가스로 대체하면전체 도시가스 수급 안정성을 높일 수 있을 것으로 판단된다.
姜秉旭 영남이공대학 1978 論文集 Vol.7 No.-
The architectures of various logic circuits utilized in computer and other devices have become more complex. Because of considerable probability of consequent errors, it is necessary to adapt self correction technique in other to maintain reliabity of logic circuits. For the purpose of this, redundancy technique is generally used and LSr makes possible to realize it. In this paper a synthesis procedure for designing a single-failure-tolerant shift register, which is one of basic parts in arithmetic units of computer, is. presented. In addition to failure-tolerant function, parallel data input-output.. shift-right and left functions are also encountered.
강병욱,손상균,문준호,채이수,김종광,이수정,김원석,이제중,이세련,박건욱,이호섭,이원식,원종호,박무림,곽재용,김민경,김효정,오성용,강혜진,서철원 대한혈액학회 2014 Blood Research Vol.49 No.1
BackgroundWe investigated the clinical features and treatment outcomes of patients with mantle cell lymphoma (MCL) in Korea. MethodsWe retrospectively analyzed the clinical characteristics and prognosis of 131 patients di-agnosed with MCL between January 2004 and December 2009 at 15 medical centers in Korea; all patients received at least 1 chemotherapeutic regimen for MCL.ResultsThe median age for the patients was 63 years (range, 26‒78 years), and 77.9% were men. A total of 105 patients (80.1%) had stage III or IV MCL at diagnosis. Fifty-two patients (39.7%) were categorized with high- or high-intermediate risk MCL according to the International Prognostic Index (IPI). Eighteen patients (13.7%) were in the high-risk group according to the simplified MCL-IPI (MIPI). The overall incidence of extranodal involve-ment was 69.5%. The overall incidence of bone marrow and gastrointestinal involvements at diagnosis was 41.2% and 35.1%, respectively. Cyclophosphamide, doxorubicin, vin-cristine, prednisolone, and rituximab were used frequently as the first-line treatment (41.2%). With a median follow-up duration of 20.0 months (range, 0.2‒77.0 months), the overall survival (OS) at 2 years was 64.7%, while the event-free survival (EFS) was 39.7%. Multivariate analysis showed that the simplified MIPI was significantly associated with OS. However, the use of a rituximab-containing regimen was not associated with OS and EFS. ConclusionSimilar to results from Western countries, the current study found that simplified MIPI was an important prognostic factor in Korean patients with MCL.
姜秉旭 嶺南大學校 工業技術硏究所 1988 연구보고 Vol.16 No.2
In this paper, the Gauss-Seidel method, a representative method solving linear simultaneous equations by iteration, is studied. The importance of pivoting to improve computing speed is analyzed and an efficient pivoting algorithm is proposed. The algorithm is implemented with FORTRAN77 to analyze it's performance and tested with two experimental systems. The experimental results show that the number of iteration is greatly reduced by introducing the pivoting algorithm which needs only the number of operations for one Gauss-Seidel iteration.