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Accident Analysis and Prevention, 2006
Driving safety has become an extremely severe problem in China due to rapid motorization. Unless ... more Driving safety has become an extremely severe problem in China due to rapid motorization. Unless more effective measures are taken, the fatality risk and the total fatalities due to road traffic accidents are expected to continue to increase. Therefore, focus group discussions were conducted to explore driver attitudes and safe driver characteristics. The results were then compared with a similar study conducted with US drivers. Although similarities were found, differences were of more importance. The Chinese drivers concentrate more on driving skills and capabilities, whereas the US drivers concentrate more on practical safe driving guidelines. Then direct field observations were conducted for the Chinese drivers to empirically investigate the issues discovered. The use of safety belts, running lights, headlights, and turn signals were observed to investigate the drivers' behaviors. Results show that the safety belt use ratio is about 64%, running light use is nearly zero during rainy and snowy weather, headlights use after sunset is substantially delayed, and only about 40% of drivers use turn signals to indicate their intention to change lanes. These findings indicate that the authorities need to take appropriate countermeasures to change the views of the Chinese drivers regarding driving safety and their unsafe driving behaviors. Improvement of training content and methods as well as police enforcement would be recommended.
IEEE Transactions on Power Systems, 1998
... Problems with A Novel Data Structure Hua Wei H. Sasaki J. Kubokawa Member IEEE ... A noveldat... more ... Problems with A Novel Data Structure Hua Wei H. Sasaki J. Kubokawa Member IEEE ... A noveldata structure is proposed which can reduce fill-ins by about 50% compared with conventionaldata structure and reduce CPU time by about 15% for large scale systems. ...
Biomaterials, 2006
To achieve a combination of spatial specificity in a passive manner with a stimuli-response targe... more To achieve a combination of spatial specificity in a passive manner with a stimuli-response targeting mechanism, a temperatureresponsive polymeric micelle was prepared using block copolymers of poly(N-isopropylacrylamide-b-methyl methacrylate) (PNIPAAmb-PMMA). The critical micelle concentration of amphiphilic block copolymers in aqueous solution was determined by fluorescence spectroscopy using pyrene as a fluorescence probe. Transmission electron microscopy images showed that these nanoparticles were regularly spherical in shape. Micelle size determined by size analysis was around 190 nm. The micelles showed reversible dispersion/ aggregation in response to temperature cycles through an outer polymer shell lower critical solution temperature (LCST) for PNIPAAm at around 33 1C, observed by optical absorbance measurements and dynamic light scattering (DLS). The anti-inflammation drug prednisone acetate was loaded as the model drug in the polymeric nanoparticles. In vitro release behavior of prednisone acetate was investigated, which showed a dramatic thermoresponsive fast/slow switching behavior according to the temperature-responsive structural changes of a micellar shell structure. The reversible and sensitive thermoresponse of this micelle might provide opportunities to construct a novel drug delivery system in conjunction with localized hyperthermia. r
Accident Analysis and Prevention, 2006
Driving safety has become an extremely severe problem in China due to rapid motorization. Unless ... more Driving safety has become an extremely severe problem in China due to rapid motorization. Unless more effective measures are taken, the fatality risk and the total fatalities due to road traffic accidents are expected to continue to increase. Therefore, focus group discussions were conducted to explore driver attitudes and safe driver characteristics. The results were then compared with a similar study conducted with US drivers. Although similarities were found, differences were of more importance. The Chinese drivers concentrate more on driving skills and capabilities, whereas the US drivers concentrate more on practical safe driving guidelines. Then direct field observations were conducted for the Chinese drivers to empirically investigate the issues discovered. The use of safety belts, running lights, headlights, and turn signals were observed to investigate the drivers' behaviors. Results show that the safety belt use ratio is about 64%, running light use is nearly zero during rainy and snowy weather, headlights use after sunset is substantially delayed, and only about 40% of drivers use turn signals to indicate their intention to change lanes. These findings indicate that the authorities need to take appropriate countermeasures to change the views of the Chinese drivers regarding driving safety and their unsafe driving behaviors. Improvement of training content and methods as well as police enforcement would be recommended.
IEEE Transactions on Power Systems, 1998
... Problems with A Novel Data Structure Hua Wei H. Sasaki J. Kubokawa Member IEEE ... A noveldat... more ... Problems with A Novel Data Structure Hua Wei H. Sasaki J. Kubokawa Member IEEE ... A noveldata structure is proposed which can reduce fill-ins by about 50% compared with conventionaldata structure and reduce CPU time by about 15% for large scale systems. ...
Biomaterials, 2006
To achieve a combination of spatial specificity in a passive manner with a stimuli-response targe... more To achieve a combination of spatial specificity in a passive manner with a stimuli-response targeting mechanism, a temperatureresponsive polymeric micelle was prepared using block copolymers of poly(N-isopropylacrylamide-b-methyl methacrylate) (PNIPAAmb-PMMA). The critical micelle concentration of amphiphilic block copolymers in aqueous solution was determined by fluorescence spectroscopy using pyrene as a fluorescence probe. Transmission electron microscopy images showed that these nanoparticles were regularly spherical in shape. Micelle size determined by size analysis was around 190 nm. The micelles showed reversible dispersion/ aggregation in response to temperature cycles through an outer polymer shell lower critical solution temperature (LCST) for PNIPAAm at around 33 1C, observed by optical absorbance measurements and dynamic light scattering (DLS). The anti-inflammation drug prednisone acetate was loaded as the model drug in the polymeric nanoparticles. In vitro release behavior of prednisone acetate was investigated, which showed a dramatic thermoresponsive fast/slow switching behavior according to the temperature-responsive structural changes of a micellar shell structure. The reversible and sensitive thermoresponse of this micelle might provide opportunities to construct a novel drug delivery system in conjunction with localized hyperthermia. r