• Molecules and Cells
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• v.40 no.4
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• pp.314-314
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• 2017

• Proceedings of the KIEE Conference
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• 1979.08a
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• pp.94-103
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• 1979

A 16-bit computer system, called X77, is designed and constructed using bit-slice micro-slice microprogrammable. A cross-assembler/simulator software has been implemented and used to debug the entire system design including actual microcodes prior to hardware realizations. Prototypes of X77 CPU, I/O processing subsystem and their interconnections have been constructed and are in the process of being debugged.

• Journal of the Korean Vacuum Society
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• v.1 no.3
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• pp.336-340
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• 1992

포항가속기 저장링 진공시스템의 성능을 예견하기 위하여, 초도품 진공 챔버를 제 작, 조립 및 테스트를 하였다. 비휘발성 흡착펌프와 이온펌프로 구성되어 있는 다섯대의 혼 합펌프와 한 대의 터보펌프를 사용하였다. 그 결과 낮은 10-10Torr을 얻음으로서 설계된 진 공도를 성취하였다.

• Proceedings of the International Microelectronics And Packaging Society Conference
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• 2007.04a
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• pp.129-146
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• 2007

[ ${\square}$ ] A mathematical model has been developed and used to analyze the limits of He fine leak test. ${\square}$ Uncertainties inherent in using the MIL-STD-883 guidelines for hermeticity evaluation of small packages have been demonstrated. ${\square}$ A new methodology to quantitatively characterize hermeticity has been developed.

• Journal of Information Technology Services
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• v.18 no.5
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• pp.193-207
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• 2019

In recent years, Digital Social Innovation has been emerging at home and abroad and new solutions are being proposed by the perspective of User using digital technology in order to solve social and economic problems of the city. In addition, Living Labs which is an innovative tools and space enable to solve problems doing activities with various participants led by users. Therefore, this study aims to systematically manage the activities of Living Lab in Digital Social Innovation and improves the Living Lab sustainability using the performance indicators which are going to be developed. Furthermore, construct the appropriate indicator of each project process and take test at real Living Labs. As a result, performance indicator was derived from each procedure in the Living Lab project, and proved validity and reliability of the indicators through qualitative and quantitative methods by interviews and the questionnaire from the participants of Living Labs.

• Biomedical Science Letters
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• v.11 no.3
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• pp.311-318
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• 2005

Grp78, discovered as one of the putative target genes of Hoxc8, is a highly conserved stress protein and functions as a molecular chaperone in the endoplasmic reticulum (ER). In order to see the stage-specific expression pattern of Grp78 during development, mouse embryos from day 7.5 to 17.5 p.c. were isolated, and RT-PCR as well as in situ hybridization was performed. When RT-PCR was performed using Grp78 specific primers, periodic expression pattern was detected. And also a region-specific expression pattern was detected with a strong expression in the trunk part of day 11.5 p.c. embryo, like that of Hoxc8. When in situ hybridization was performed, Grp78 was revealed to be expressed in the endoderm, somite, neuroepithelium cells of neural tube in early embryos. In the case of late embryos, Grp78 expression was detected in the liver, segmental bronchus within cranial lobe of lung, ossification center within the cartilage primordium of rib and vertebra, submandibular gland, as well as metanephros. These expression patterns are very much similar to those of Hoxc8. Since Hoxc8 has been reported to regulate apoptosis during organogenesis, it might be possible that the apoptotic function could have been conveyed through the expression of Grp78, implying that the Grp78 is one of the Hoxc8 downstream target genes.

• Proceedings of the Korean Magnestics Society Conference
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• 2005.06a
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• pp.27-27
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• 2005

• Journal of the Korean Society of Propulsion Engineers
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• v.21 no.1
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• pp.84-90
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• 2017

It is observed that chemical characteristics of HTPB(Hydroxyl Terminated Polybutadiene) binder such as OH index, molecular weight and functionality and so on, can be different with synthetic batch, which can affect curing reaction of binder in itself or propellant. Finally this reaction can also affect mechanical properties of propellant. And the results suggest that proper degree of curing reaction is necessary to obtain better mechanical properties of propellant.

• Journal of the Korea Institute of Military Science and Technology
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• v.22 no.1
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• pp.11-19
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• 2019

The waveguide slotted active phased array radar is characterized in that the beam is tilt in a specific direction when the feeding position of the antenna is not in the center of the antenna. If the beam deflection phenomenon is not properly compensated, error bias is generated in the target information collected by the radar, and the target accuracy is lowered. In this paper, we describe a technique to compensate the error of the target information that is collected in the active phased array radar of the waveguide slot type instead of the center of the antenna.

• Biomedical Science Letters
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• v.15 no.3
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• pp.249-255
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• 2009

All living things have been developed efficient strategies to cope with external and internal environmental changes via a process termed 'homeostasis'. However, chronic prenatal maternal stress may significantly contributes to pregnancy complications by disturbing hypothalamic-pituitary-adrenal (HPA) axis and the automatic nervous system (ANS), and results in unfavorable development of the fetus. Dysregulation of these two major stress response systems lead to the increased secretion of the glucocorticoids (GCs) which are known to be essential for normal development and the maturation of the central nervous system. As Hox genes are master key regulators of the embryonic morphogenesis and cell differentiation, we aimed to determine the effects of dexamethasone, a potent synthetic glucocorticoid, on gene expression in mesenchymal stem cell C3H10T1/2. Analysis of 39 Hox genes based on reverse transcription PCR (RT-PCR) method revealed that the expression patterns of Hox genes were overall upregulated by long dexametasone treatment. These results indicate that maternal stress may have a deleterious effect on early developing embryo through the stress hormone, glucocorticoid.