• The KIPS Transactions:PartC
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• v.15C no.5
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• pp.419-428
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• 2008

IEEE 802.15.4 reserves transmission time to support real-time transport by sending GTS request packets to the PAN coordinator in advance. This paper introduces GTS-FAT technique to reduce the reservation time by giving a higher sending priority to GTS request packets than data packets. Differently from the conventional scheme where these two kinds of packets share a single transmission queue, GTS-FAT scheme allocates two queues with two different contention window sizes like IEEE 802.11e. This paper also proposes an analytical GTS delay model by combining the two legacy models for 802.15.4 and 802.11e to accurately predict the GTS-FAT delay over a given network topology. Our analysis shows that GTS-FAT reduces GTS service delay by up to 50% at the expense of the data delay by only up to 6.1% when GTS request packets four times outnumber data packets.

• The Journal of Korean Medicine
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• v.30 no.1
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• pp.17-25
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• 2009

Objectives: This study was on the pharmaceutical components in purified ginseng total saponin (GTS), coisis semen (CS), the combination of these drugs, and the major component of coicis coixol for the prevention and treatment of obesity. Methods: In this study, to evaluate the effect on the suppression of obesity, high fat diet-induced obese rats were treating with the drugs, the effects on the balance of energy and diet activity were examined, and the change of weight, the change of the intake of diet, body fat rate, etc. were assessed. Results: The results demonstrate that in high fat diet-induced obese white rats, the combination treatment of ginseng total saponin and coicis was effective in suppression of weight gain, reduction of intake of food, and reduction of body fat. Conclusions: The results suggest that a combination treatment with major components of red ginseng total saponin and coicis may be used therapeutically for the suppression and treatment of obesity.