Takao Sakurai

  • Citations Per Year
Learn More
This study evaluated the population pharmacokinetics (PK) of entecavir in Japanese patients with chronic hepatitis B infection enrolled in 2 Japanese phase IIb clinical trials and compared them to non-Japanese patients enrolled in global phase II trials. The objectives were to identify significant and clinically meaningful covariate effects on entecavir(More)
Position sensorless speed control of super high-speed permanent magnet (PM) motor for micro gas turbine generation system is described. Mechanically robust surface PM (SPM) generator is installed in a turbine system. This generator is used as the starting motor. The sensorless control of the synchronous generator/motor is done by using voltage/frequency(More)
A novel field sensing method for concentrated acid solutions was developed. The sensor is composed of a dye, Oil Red O, and florisil as a support for the dye. When the dye is supported on the florisil surface, its color change properties against the acid solution drastically changes compared to in solution, and the sensor is applicable to sensing for acids(More)
Interleaved modular multiplication is widely used to implement public-key cryptosystems. Multipliers followed this method can be best implemented using SRT division algorithm. This paper evaluates the time/area of two implementation of such multipliers. The first is implemented with radices higher than four, which is a typical radix found in conventional(More)
Hardware organized modular multiplication based on division algorithm is one of the effective methods used for RSA encryption/decryption. This paper generalizes the hardware organization of the modular multiplication based on the higher-radix SRT division algorithm, and describes the area/time trade-off of the organization. For the number representation we(More)
The color-changing phenomenon of hydrophobic bisazo dye, Sudan III in an acetonitrile solution against the addition of concentrated sulfuric acid has been discovered and the chromic properties investigated. Based on observations, a novel quantification method of concentrated sulfuric acid has been developed. Sudan III changes its color from orange to blue(More)
Recently, methods for monitoring and analyzing office workers' business activities are in demand to improve their efficiency. This paper discusses about methods to analyze office workers' procedures. Some methods have been proposed for monitoring business activities as following: time-study methods, PC-operation-log methods and sensor-log methods. However(More)