• 한국건축시공학회지
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• 제5권4호
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• pp.91-98
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• 2005

This paper illustrates a comparative analysis on the economic efficiency of remodeling method that is one of major factors in totting more desirable standards and proposes to utilize LCC calculation techniques in generating a required budget for more effective quantity-based analysis that is both objective and effect. Rather than comparing only the initial lost of two different methods, it seems through to compare their entire life cycle cost that includes any repair and reconstruction/ remodeling expenses, thus generate overall quantitative analysis in objective perspective

• 한국자동차공학회논문집
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• 제6권2호
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• pp.178-190
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• 1998

We have developed a planar impact model with a capability of reverse calculation to reconstruct various types of automobile collisions. This topic is the main part of what is referred to as accident reconstruction. The model uses the principle of impulse and momentum, and introduces a restitution coefficient and an impulse ratio at the impact center. Based on the car-to-car collision test results, we present how to estimate the restitution coefficient and the impulse ratio from some impact conditions. To validate the model and improve its reliability in accident analysis, the collision analysis has been performer with the estimated parameters. The analysis and experimental results agree well in the kinetic energy loss and the post-impact velocity.

• 디지털콘텐츠학회 논문지
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• 제12권2호
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• pp.157-164
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• 2011

유방암중 관상피내암으로 진단 받은 환자를 대상으로 조영제 주입전, 후의 감산된 영상과 3차원 재구성된 영상을 정량적으로 비교 분석하여 재구성된 영상의 효과와 유용성을 고찰 해보고자 한다. 조직학적으로 관상피 내암으로 진단 받은 환자 20명을 대상으로 3.0T MR scanner를 이용하여 감산된 영상과 3차원 재구성한 영상을 획득하였다. 분석 결과 감산 영상과 재구성한 영상에서 신호대 잡음비는 병변, 유관조직, 지방조직에서 재구성한 영상에서 높은 신호대 잡음비를 보였으며 두 영상에서의 대조 도대 잡음비는 차이를 보이지 않았다.

• Journal of Microbiology and Biotechnology
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• 제22권8호
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• pp.1059-1065
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• 2012

Biocatalytic transfer of oxygen in isolated cytochrome P450 or whole microbial cells is an elegant and efficient way to achieve selective hydroxylation. Cytochrome P450 CYP105P2 was isolated from Streptomyces peucetius that showed a high degree of amino acid identity with hydroxylases. Previously performed homology modeling, and subsequent docking of the model with flavone, displayed a reasonable docked structure. Therefore, in this study, in a pursuit to hydroxylate the flavone ring, CYP105P2 was co-expressed in a two-vector system with putidaredoxin reductase (camA) and putidaredoxin (camB) from Pseudomonas putida for efficient electron transport. HPLC analysis of the isolated product, together with LC-MS analysis, showed a monohydroxylated flavone, which was further established by subsequent ESI/MS-MS. A successful 10.35% yield was achieved with the whole-cell bioconversion reaction in Escherichia coli. We verified that CYP105P2 is a potential bacterial hydroxylase.

• Journal of Electrical Engineering and Technology
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• 제13권2호
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• pp.781-789
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• 2018

This paper proposes a new approach utilizing empirical mode decomposition (EMD) reconstruction to process vibration signals of a transformer under DC bias caused by high voltage direction transmission (HVDC), which is the potential cause of additional vibration and noise from transformer. Firstly, the Calculation Method is presented and a 3D model of transformer is simulated to analyze transformer deformation characteristic and the result indicate the main vibration is produced along axial direction of three core limbs. Vibration test system has been built and test points on the core and shell of transformer have been measured. Then, the signal reconstruction method for transformer vibration based on EMD is proposed. Through the EMD decomposition, the corrupted noise can be selectively reconstructed by the certain frequency IMFs and better vibration signals of transformer have been obtained. After EMD reconstruction, the vibrations are compared between transformer in normal work and with DC bias. When DC bias occurs, odd harmonics, vibration of core and shell, behave as a nonlinear increase and the even harmonics keep unchanged with DC current. Experiment results are provided to collaborate our theoretical analysis and to illustrate the effectiveness of the proposed EMD method.

• 대한정형외과스포츠의학회지
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• 제8권2호
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• pp.76-82
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• 2009

목적: 아킬레스 동종건을 이용한 관절경적 후방십자인대 재건술을 시행한 환자군에 대해 임상적 결과를 평가하고 보행분석을 시행하고자 하였다. 대상 및 방법: 2004년 3월에서 2005년 3월 까지 후방십자인대 손상에 대해 신선 동결 아킬레스 동종건을 이용한 관절경적 재건술을 시행 받은 환자들 중, 저자들이 지시한 재활 프로그램에 순응한 12명의 환자를 대상으로 하였다. 모든 환자에서 수술후 추시 36개월에 임상적 결과 평가와 보행분석을 시행하였다. 임상적 결과는 관절 운동 범위, Lysholm knee score, Tegner Activity Score, IKDC score, 후방 전위 검사, Telos stress arthrometer를 이용한 후방 전위를 측정하여 평가하였고 보행검사는 3차원적 보행분석기를 이용하여 분석하였다. 결과: 모든 임상적 결과 평가 항목에 있어서 술 전과 비교하여 후방십자인대 재건술 후 통계학적으로 유의한 만족할 만한 결과를 보였다. 보행분석 결과 환측과 건측 슬관절에 굴곡각 및 내반각의 약간의 차이를 보였지만 통계적으로 유의성을 보이지 않았으며, 전반적으로 양쪽 슬관절의 유의한 보행의 차이는 관찰되지 않았다. 결론: 후방십자인대 손상 슬관절에서 관절경적 재건술을 시행한 환자 중 재활프로그램에 순응한 환자를 대상으로 평가한 결과 술 전과 비교하여 의미있게 증가된 임상적 결과와 건측과 비교하여 차이를 보이지 않는 보행분석 결과를 얻은바 후방십자인대 재건시 체계적이고 엄격한 재활치료가 중요할 것으로 사료된다.

• Journal of Biosystems Engineering
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• 제43권1호
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• pp.45-58
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• 2018

Background: Metabolic modeling has been an essential tool in metabolic reconstruction, which has dramatically advanced in the last decades as a part of systems biology. At present, the protocol for metabolic reconstruction has been systematically established, and it provides the basis for the analysis of complex systems, which has been limited in the past. Therefore, metabolic reconstruction can be adapted to analyze agricultural systems whose metabolic data has been accumulated recently. Purpose: The aim of this review is to suggest the suitability of metabolic modeling for understanding agricultural metabolic data and to encourage the potential use of this modeling in the field of agriculture. Review: We reviewed the procedure of metabolic reconstruction using computational modeling with applicable strategies and software tools. Additionally, we presented the initial attempts of metabolic reconstruction in the field of agriculture and proposed further applications.

• 한국음향학회지
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• 제18권5호
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• pp.83-90
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• 1999

본 논문에서는 초음파 회절 토모그라피를 위한 FBP와 BFP 영상복원 알고리즘에 관한 분해능을 연구하였다. 고정좌표계를 사용한 수정된 FBP 영상복원 알고리즘과 평면구조물에 적합한 BFP 영상복원 알고리즘을 이용하여 복원할 수 있는 토모그라픽 영상에 대한 분해능을 분석할 수 있는 모호함수를 유도하고 모의실험을 통하여 얻은 측방향 및 축방향 분해능을 분석하였다. 분석결과, FBP 영상복원 알고리즘에 대한 측방향 및 축방향의 3dB분해능은 각각 0.27파장, 0.70파장을 얻었으며, 또한 BFP 영상복원 알고리즘에 대한 측방향 및 축방향 분해능도 각각 0.39파장과 0.98파장으로 정량적으로 결정하였다. 따라서 본 연구를 통하여 수정된 FBP 영상복원 알고리즘과 BFP 영상복원 알고리즘은 회절 토모그라피를 위한 영상복원에 유용하게 이용할 수 있음을 확인하였다.

• Molecules and Cells
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• 제22권2호
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• pp.154-162
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• 2006

The entire gene cluster involved in the biosynthesis of angucyclines Sch 47554 and Sch 47555 was cloned, sequenced, and characterized. Analysis of the nucleotide sequence of genomic DNA spanning 77.5-kb revealed a total of 55 open reading frames, and the deduced products exhibited strong sequence similarities to type II polyketide synthases, deoxysugar biosynthetic enzymes, and a variety of accessory enzymes. The involvement of this gene cluster in the pathway of Sch 47554 and Sch 47555 was confirmed by genetic inactivation of the aromatase, including a portion of the ketoreductase, which was disrupted by inserting the thiostrepton gene.

• Archives of Plastic Surgery
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• 제49권3호
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• pp.339-345
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• 2022

Background Patients that undergo mastectomy for breast cancer with reconstruction may be prone to prolonged opioid use. As risk factors are not well-established, this article sought to better understand the risk factors that may be associated with this. Methods Patients that underwent breast reconstruction between 2010 and 2018 were identified in PearlDiver, a national insurance claims database. Patient demographics and comorbidities were elucidated, and various complications were then identified. Descriptive statistics as well as a multivariate analysis was used to evaluate the association of risk factors and complications. Results Breast reconstruction patients of 24,765 were identified from this database. Obesity, tobacco use, benzodiazepine use, and anticonvulsant use were all associated with prolonged opioid prescriptions greater than 90 days after both alloplastic and autologous reconstruction. Conclusion Prolonged opioid use continues to remain a topic of concern, and particularly in cancer patients that undergo breast reconstruction. Providers should be aware of potential risk factors for this to reduce this chance following breast reconstruction surgery.