• 전기학회논문지
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• 제57권11호
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• pp.1897-1904
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• 2008

In this paper, the method for effective stability analysis of Jeju power system in 2011 is proposed. The stability analysis of Jeju power system was carried out by using proposed method In case of Jeju power system with wind turbine generators or without wind turbine generators, including CSC HVDC or VSC HVDC. The steady-state stability is validated by SCR and ESCR, PV curve, QV curve. And the transient stability is analyzed by CCT(Critical Clearing Time). VSC HVDC has more advantages than CSV HVDC on the stability. Also, Jeju power system without wind turbine generators has more advantages than Jeju power system with Wind Turbine Generators on the stability.

• 경영과학
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• 제12권1호
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• pp.51-60
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• 1995

This paper presents a workload based model and cell design support system (CDSS) in manufacturing cell design. The proposed model consider manufacturing factor such as machine capacity, production volume, process time, and cell size. Based on those information, workload is calculated and according to the workload, the relationship between machine and part is represented by the workload matrix. To form the manufacturing cell, correlation similarity coefficient (CSC) among machines are calculated and a pair of machines that has the highest value of CSC is assigned to a machine cell. Repeat the above steps until the desired manufacturing cells are obtained. Finally, a cell design support system that could increase the efficiency in the application of a proposed model is developed. The proposed model and CDSS are illustrated by a numerical example.

• 한국가시화정보학회:학술대회논문집
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• 한국가시화정보학회 2007년도 추계학술대회
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• pp.63-65
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• 2007

The paper reports on a new type of combinatorial chaotic and serpentine micromixer. Such a new and novel micromixer is simple to fabricate and easy to use. The micromixer is characterized and visualized with the help of the Micro-LIF technique. The new micromixer will e further applied to lab-on-chip device. The mixing capabilities of this mixer is about 30-33%.

• Asian Pacific Journal of Cancer Prevention
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• 제16권17호
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• pp.7491-7496
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• 2015

Background: Biomarkers in breast neoplasms provide invaluable information regarding prognosis and help determining the optimal treatment. We investigated the possible correlation between cancer stem cell (CSC) markers (CD133, and ALDH1) in invasive ductal breast carcinomas with some clinicopathological parameters. Aim: To assess the correlation between expression of cancer stem cell (CSC) markers (CD133, and ALDH1) and clinicopathological parameters of invasive ductal breast carcinomas. Materials and Methods: Immunohistochemical analysis of CD133 and ALDH1 was performed on a series of 120 modified radical mastectomy (MRM) specimens diagnosed as invasive ductal breast carcinoma. Results: Expression of both CD133 and ALDH1 was significantly changed and related to tumor size, tumor stage (TNM), and lymph node metastasis. A negative correlation between CD133 and ALDH1 was found. Conclusions: Detecting the expression of CD133 and ALDH1 in invasive ductal breast carcinomas may be of help in more accurately predicting the aggressive properties and determining the optimal treatment.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2003년도 가을 학술발표논문집 Vol.30 No.2 (2)
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• pp.262-264
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• 2003

다목적실용위성 2호에 탑재 되어 있는 탑재소프트웨어는 위성의 자세, 전력, 열 제어 및 지상 명령 수신, 측정 데이터 수집 등 여러 개의 소프트웨어 모듈로 구성되어 있으며, 각 소프트웨어 모듈은 실시간 운용체제인 VRTX에 의해서 제어된다. 다목적실용위성 2호에서 사용하는 탑재소프트웨어는 일반적인 소프트웨어와 달리 고도의 신뢰성과 안정성을 보장해야 하며 지상과의 통신이 없는 상태에서도 위성을 정상적으로 운용할 수 있어야 하며, 위성 시스템의 장애가 발생시 위성을 안전 모드로 전환 할 수 있어야한다. 본 논문에서는 다중프로세서 구조를 갖는 다목적실용위성 2호의 탑재소프트웨어 초기화 및 태스크를 관리하며 위성의 Health 관리를 담당하는 Executive CSC(Computer Software Component)의 설계와 구현에 대하여 설명한다.

• Korean Journal of Radiology
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• 제23권6호
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• pp.625-637
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• 2022

With regard to the indolent clinical characteristics of prostate cancer (PCa), the more selective detection of clinically significant PCa (CSC) has been emphasized in its diagnosis and management. Magnetic resonance imaging (MRI) has advanced technically, and recent international cooperation has provided a standardized imaging and reporting system for prostate MRI. Accordingly, prostate MRI has recently been investigated and utilized as a triage tool before biopsy to guide tissue sampling to increase the detection rate of CSC beyond the staging tool for patients in whom PCa was already confirmed on conventional systematic biopsy. Radiologists must understand the current paradigm shift for better PCa diagnosis and management. This article reviewed the recent literature, demonstrating the diagnostic value of pre-biopsy prostate MRI with targeted biopsy and discussed unsolved issues regarding the paradigm shift in the diagnosis of PCa.

• 한국유전체학회:학술대회논문집
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• 한국유전체학회 2006년도 The 15th Korean Genome Organization Conference KOGO 2006 Annual Meeting
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• pp.44-44
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• 2006

• 한국연초학회지
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• 제30권2호
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• pp.109-116
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• 2008

Mutagenicity of cigarette smoke is one of the major health concerns related to smoking. Reduction of the components comprising mutagenic activity in cigarette mainstream smoke can be expected to bring about reduced risk of smoking. The purpose of this study is to isolate mutagenic compounds and to investigate the relative contribution to allover mutagenicity of smoke to find clues for the effective elimination of the components. Cigarette smoke condensate (CSC) was obtained from total particulate matter (TPM) of mainstream smoke, and several fractions fractionated from CSC were made by combination of cation exchange chromatograph and reverse-phase chromatography. The mutagenic activity of these fractions was assessed using Salmonella mutagenicity assay with S. typimurium TA98 strain in the presence of metabolic activation system (S-9). The fractions isolated by cation exchange and reverse-phase column showed relatively high mutagenic activity. The basic and hydrophilic fraction 9 showed approximately 33% of mutagenic activity of CSC and its specific activity was 2,459 revertants/mg TPM. These results suggest that hydrophilic cation exchanger and/or other adsorbents possessing similar properties may be used to remove the mutagenic compounds from mainstream smoke.

• Journal of the Korean Wood Science and Technology
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• 제44권6호
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• pp.842-851
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• 2016

The objective of this study was to improve physical and mechanical properties of soft-inner part of oil palm trunk (S-OPT) after impregnation with phenol formaldehyde (PF) resin and densification by close system compression (CSC) method. Effect of different methods of PF resin impregnation (i.e., no vacuum-pressure, vacuum, and vacuum-pressure) was evaluated. The results showed that PF resin impregnation and CSC significantly improved the physical and mechanical properties of S-OPT up to: (1) 176% in density; (2) 309% in modulus of rupture (MOR); (3) 287% modulus of elasticity (MOE); and (4) 191% in the compressive strength. Physical and mechanical properties of S-OPT showed their best performances when PF resin impregnated with vacuum-pressure method as shown by higher weight gain, density, MOR, MOE, compressive strength, and lower recovery of set due to better penetration of PF resin into S-OPT. Combining PF resin impregnation and densification by CSC method could be a good method to improve physical and mechanical properties of S-OPT.

• 한국약용작물학회지
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• 제19권5호
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• pp.380-387
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• 2011

This study was carried out to investigate the inhibitory effect of Angelicae Dahuricae Radix (ADR) extract on chronic obstructive pulmonary disease (COPD) induced by cigarette smoke condensate (CSC) and lipopolysaccharide (LPS) in mice. COPD was induced by intratracheal instillation of LPS and CSC 5 times for 12 days; this increased airway hyperresoponsiveness (AHR) and inflammatory cells in bronchoalveolar lavage fluid (BALF). ADR extract was administered orally at a dose of 50 and 200 mg/kg. The concentration of imperatorin, a major component of ADR and therefore used as a measure of quality control, was $0.098%{\pm}0.018%$. Treatment of the mice with ADR extract (50 and 200 mg/kg) alleviated AHR and reduced inflammatory cell counts. Treatment with cyclosporin A (CSA; 10 mg/kg) also modulated AHR and reduced inflammatory cells effectively. Compared with CSA treatment, treatment with ADR (50 mg/kg) extract reduced neutrophil and $CD4^+/CD3^+$ cell counts by 22.67% and 44.92%, respectively. In addition, compared with CSA treatment, treatment ADR 200 mg/kg reduced neutrophils, $CD4^+/CD3^+$ cells and $CD8^+/CD3^+$ cells, by 32.10%, 83.17% and 82.11%, respectively. These results indicate that ADR extract may have an inhibitory effect on COPD induced by LPS and CSC in mice.