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
system—without needing a person to be involved.
A typical RFID tag consists of a microchip attached to a radio antenna mounted on a substrate. The chip can store as much as 2 kilobytes of data. For example, information about a product or shipment—date of manufacture, destination and sell-by date—can be written to a tag.
To retrieve the data stored on an RFID tag, you need
II. How is CBM formed
Coalbed methane (CH4) forms in one of two ways. During the earliest stage of coalification (the process that turns plant detritus into coal), biogenic methane is generated as a by-product of bacterial respiration. Aerobic bacteria (those that use oxygen in respiration) first metabolize any free oxygen left in the plant remains and the surrounding sediments. In fresh water
1.1.3. Prevent Vibration in Ships
선박에서의 주요 진동 문제는 main engine 및 프로펠러에 의해 발생된다. 프로펠러에 의한 exciting force는 surface force나 bearing force, thrust force를 발생시키며, 발생된 force들은 hull girder 진동을 일으킨다.
다른 종류의 진동으로는 wave force로 인한 whipping 및 springing이 있으며, 다음 장