The number of Japanese elderly people is increasing every year and the demand for life monitoring systems is also increased. Accidents in bathroom such as heat shock, slipping and falling become particularly serious in recent years. Therefore, this paper proposes an anomaly detection system in bathroom using a temperature sensor array and machine learning. The proposed system extracts the feature values of human region and detects various abnormal behaviors by One-Class SVM. In addition, the effect of improved One-Class SVM with virtual outliers is also verified. Some experiments to demonstrate the effectiveness of the proposed anomaly detection system are conducted and the results show that the high detection accuracy of at least about 90% can be realized in both the washing place and bathtub.

Coronary artery bypass grafting devices using integrated low-level energies adhesion has been developed. A prototype device was developed to establish device operating procedure for quick vascular adhesion and to indicate feasibility of anastomosis with the proposed mechanism. A cylinder part which has a nichrome winding is located at a tip of the prototype device to fix the position of a bypass graft on a coronary with vacuum and to give heat energy to the vessels. The sequence of the suction was suitably selected because the air flow due to suction deteriorated a heating capacity in the temperature measurement test. The prototype device successfully demonstrated the ability of vascular adhesion under blood flow environment. Then, an improved device with a compact cylinder and modified arms which has integrated heating and pressurizing mechanism was developed to easier access to the coronary and to prevent the heater from contacting to surrounding tissues was developed. An anastomosis success rate of the improved device is 83%. In addition, the improved device indicates sufficient tensile force which is 1.4 times higher than that of the prototype device and can withstand a blood pressure of 350 mmHg.

A novel core-shell ion-exchange filler composed of an ion-exchange porous shell layer formed on a hard polymer core was prepared for application to HPLC. We examined the effect of the thick shell of ion-exchange filler St-80 controlled by the weight ratio of the monomer for the core and shell (20:80) on the retention time and the theoretical plate number (N) in the separation of saccharides. A mixed aqueous sample of inositol, glucose, fructose and sucrose was well separated under alkaline conditions (100 and 150 mmol/L NaOH) at flow rates of 0.3-0.9 mL/min. The St-80 filler provides good chromatographic separation of saccharides, a good degree of separation between glucose and fructose and a high number of theoretical plates for saccharides.