Airport management, in common with others involved in the operation of elements of the civil air transportation system, are required to take measures that will provide a high level of protection of buildings and equipment (including aircraft), in addition to ensuring the safety and personal security of passengers and staff using the system. This must be done in manner that disturbs the normal ope
systematic problems. Only in this way, by employing an analytical approach, can a security system's strengths and weaknesses be evaluated. Alterations in major policy direction are by a continuous situation assessment of the changing security climate. Factors that can radically alter the security threat in a particular country or at a particular airport are political agitation or unrest and wides
Space Segement), 사용자부문(User Segement), 및 제어부문(Control Segement)으로 구분할수 있다.
우주부분은 NAVSTAR(Navigation System with Time and Range)라고 불리우는 지구의 주위를 선회하는 6개의 궤도면에 24개의 인공위성(고도 20,200km, 경사각 55도, 주기 12시간)으로 구성되며 시간신호, 위성의 위치, 위성의 상태, 시간보
and the lots of systems which promote users participation are based. For example, Wikipedia, Amazon, ebay, and intellectual knowledge search service at never let us to share our knowledge and information.
On the other hand, people who does not educated information ethics, information can be abused and have malfunctions like non-professionalism and possibility of luring for the wrong purposes.
Image of the universal family
-Living with family in the kinship of couples, parents, children, brother, and contact is made by the community or members
-Groups to share special feelings with other groups that are separated
-Family transcend time and space exist on the fundamental group and universal social institution