With the purpose of research of ATM's support ability to IP and circuit emulation business, this thesis begins with the background of its birth and technique merits, and elaborates the classification of broadband multimedia business as well as ATM's various supplementary business as CBR, ABR, VBR and UBR .
The Passive Optical Network based on Asynchronous Transfer Mode (APON) will be an ideal fiber access technique in 21st century because of its low cost and flexibility, which incorporates the support ability of ATM's multiple services and multiple bit ratios and the PON's transparent broadband transfer ability.
Tourism competitiveness is the comprehensive reflection of resources advantage,market-abilities,development potentiality and support ability of tourism industry,it is very important to realize the sustainable development of tourism industry.
The first class indexs of forming the competence of customer knowledge management are customer knowledgeacquisition abilities, efficiencies of customer knowledge sharing, customer knowledge application ability, the level of customer knowledge innovation, the attention degree of the senior, support abilities of organization, the support ability of the manpower capital, the level of the information technology.
But, to view from support ability of city nodes and relation intensity of axes, this 'node-axis structure' is elementary and not faultiness, their comprehensive strength look weak, to bring along whole northwest region developing.
Using the methods of physical strength measurement, questionnaire and mathematical statistics, and from the aspects of single-foot support ability and shaking volume of center of gravity, the study inquired into the effect of Taijiquan exercise on middle and old-aged persons' static balance ability.