Abstract: An open market is made up of numerous dealers, and each dealer is allowed to freely set selling and buying prices. Dealers tend to predict prices while being affected by recent price changes, and to determine trading prices such as selling prices and buying prices accordingly. Also, in the overall trading market, there is a price at which the selling prices and buying prices decided by each dealer are balanced, i.e., a virtual equilibrium price. While trading prices can be observed in a real trading market, the virtual equilibrium price cannot be observed. The present Inventors have transcendentally reached the two following properties in the open market; that trading prices change in the direction of narrowing the gap with the virtual equilibrium price, and that the virtual equilibrium price fluctuates according to the nature of dealers which is that dealers are affected by recent price changes.

Abstract: Two photodetectors output electric signals based on the detection of light at light receiving sections mutually spaced apart. The output signal of one of the photodetectors is delayed and a first pulse signal is generated, and second pulse signal having no delay is generated according to based on the detection signal of the other of the two photodetectors. A detection signal is output when the pulse signals overlap. According to whether the detection signal is output, a movement direction and speed of a moving body that moves between the light receiving sections are detected.

Abstract: A unique-currency control method and system defines a unique currency unit for maintaining gross assets of a company, the assets being owned in a plurality of countries, i.e., in a plurality of currencies, despite foreign exchange rate fluctuations. Introduction of the unique currency makes accounting independent of exchange rate fluctuations, thus minimizing losses caused by exchange rate fluctuations. By linking the unique currency unit with a point system which aims at locking in customers or by issuing the unique currency in the form of electronic money which can be exchanged for existing currencies, it is possible to start a new type of financial business in which effects of exchange rate fluctuations are eliminated.

Abstract: Two photodetectors are formed which output electric signals based on the detection of light at light receiving sections disposed apart in space. The output signal of one of the photodetectors is delayed and a first pulse signal is generated. A second pulse signal having no delay is generated according to the detection signal of the other of the photodetectors. A signal is output when the pulse signals are input overlappingly. According to whether the signal is output, the movement direction and speed of a moving body which moves between the light receiving sections are detected.

Abstract: A unique-currency control method and system defines a unique currency unit for maintaining gross assets of a company, the assets being owned in a plurality of countries, i.e., in a plurality of currencies, despite foreign exchange rate fluctuations. Introduction of the unique currency makes accounting independent of exchange rate fluctuations, thus minimizing losses caused by exchange rate fluctuations. By linking the unique currency unit with a point system which aims at locking in customers or by issuing the unique currency in the form of electronic money which can be exchanged for existing currencies, it is possible to start a new type of financial business in which effects of exchange rate fluctuations are eliminated.