Hidenobu Matsumoto

Competitive Position of Primary Airports in the Asia-Pacific Rim

This paper measures and compares the network performance and hub competitive position of primary airports in the Asia-Pacific rim, taking into account the quantity and quality of both direct and indirect connections. The results reveal that Tokyo has the best network performance and hub competitive position. The most striking growth of network development is found at Chinese airports, while network performance deteriorates at Oceanian airports. Finally, the results show that the position of Oneworld and Star Alliance is stronger in this region, whereas SkyTeam has an innegligible position especially at Japanese airports, owing to the fifth and sixth freedom rights.

Higashi Ajia shuyou kokusai kūkou ni okeru kyousouteki chii no hyouka to hikaku

This paper presents typical data on the internal friction of twelve single crystals of zinc oscillating longitudinally. The measurements of decrement were made at frequencies of 41 kc and 57 kc. (a) Zinc of three grades of purity was used. The behavior of decrement as a function of stress amplitude for these different materials was found to depend less on the purity of the metal than has been reported previously (see references 1 and 2). (b) For one crystal the decrement showed little rise from its initial value of 2×10−5 at very low stress amplitudes up to stress amplitudes nearly three times the static elastic limit. Considerable similarity of behavior of the decrement as a function of stress amplitude resolved into the basal plane has been found for a number of crystals with a wide range of orientation. The obtaining of these consistent results depended on the use of appropriate annealing and etching techniques. (c) The decrement of a well annealed crystal increased with rising temperature at all stres...