• 한국항공운항학회지
• /
• 제18권1호
• /
• pp.11-18
• /
• 2010

GNSS(Global Navigation Satellite System) Ground Station performs GNSS signal acquisition and processing. This system generates error correction information and distributes them to GNSS users. GNSS Ground Station consists of sensor station which contains receiver and meteorological sensor, monitoring and control subsystem which monitors and controls sensor station, control center which generates error correction information, and uplink station which transmits correction information to navigation satellites. Monitoring and control subsystem acquires and processes navigation data from sensor station. The processed data is transmitted to GNSS control center. Monitoring and control subsystem consists of data acquisition module, data formatting and archiving module, data error correction module, navigation determination module, independent quality monitoring module, and system maintenance and management module. The independent quality monitoring module inspects navigation signal, data, and measurement. This paper introduces independent quality monitoring and performs the analysis using measurement data.

• 생명과학회지
• /
• 제7권1호
• /
• pp.66-72
• /
• 1997

The term of apoptosis, programmed cell death, was firstly coined to distinguish with necrosis, pathologic cell death, by Kerr in 1972. Although various pathogenic factors are able to occur apoptosis, ti is essential process for normal development and physiology in the animals. Recently in the field of medicine, apoptosis researeh is especially focused in serveral Kind of pathopoiesis problems including cancer, immunodeficiency associated HIV and other virus, autommunity, alzheimer and congenital anormality. The information obtained from the animal model system for apoptosis should be directly applicable to both life science for understanding of development and medicine for practical the rapy. To know the common mechanism of apoptosis, it is prerequisite that the genes and factors responsible for apoptosis should be defined and characterized on the molecular level. The study of apoptosis should contribute largely to biology inculuding cell physiology and development, and both basic and clinical medicine to understand cause of diseases for therapy as well as congenital defect.