Abstract: Provided is a method for producing a positive electrode active material for an alkali ion secondary battery, the positive electrode active material containing a large amount of a transition metal and enabling operation of the battery. In the method for producing a positive electrode active material for an alkali ion secondary battery, in which the positive electrode active material contains 34 mol % or more of CrO+FeO+MnO+CoO+NiO, the method includes: a step of preparing a positive electrode active material precursor containing crystals; and a step of irradiating the positive electrode active material precursor with light to melt the crystals and amorphize at least a portion of the positive electrode active material precursor.

Abstract: A procurement data management system to judge environmental suitability of portions in design stages and product recycling. In this system, data of purchased items used in products, parts, and materials or chemical substances of purchased items are registered. A purchased item database manages registered data in a hierarchical relationship of purchased items, component parts of each purchased item, component materials of each part, and contained chemical substances of each material. An environmental standard database manages environmental standard data for chemical substances. The system utilizes the hierarchical relationship among purchased items between chemical substances to extract parts unsuitable for environmental standards among the parts in each product.

Abstract: The present invention provides a display apparatus and a display method and an advertisement method using the display apparatus which may realize an innovative image that has never been realized by a hardware structure that is extremely easy and costless and in which an excellent advertisement effect is expected as, for example, a poster advertisement. It is composed of a sequential scanning circuit for signal converting a jump scanning type image signal into a sequential scanning type and a signal turning unit for turning the signal through 90 degrees to make it possible to feed the image signal turned through 90 degrees in real time.

Abstract: A photo receiver branches a data signal obtained by photoelectric conversion and supplies the signal to a signal cutoff detector. Depending on the degree of an autocorrelation of a data signal obtained by an autocorrelation detector, the signal cutoff detector detects abnormality/normality. Depending on a level of a control signal to a VCO contained in a frequency phase-locked loop for use in clock generation, an out-of-synchronization detector makes determination of abnormality/normality. Outputs of both the detectors are ORed at an alarm processor and when at least one of the detectors detects abnormality, the detector generates an alarm.

Abstract: The present invention provides an automatic identification level control circuit, an identification level control method, an automatic identification phase control circuit, an identification phase control method, and an optical receiver, capable of stably setting an optimal identification level or identification phase. An automatic identification level control circuit of the present invention includes a coupling capacitor, an identification circuit, a level fluctuation detection circuit, an identification voltage control circuit, and a low-pass filter. The identification circuit includes limiter amplifiers and flip flops. The level fluctuation detection circuit includes exclusive OR circuits.

Abstract: A photo receiver branches a data signal obtained by photoelectric conversion and supplies the signal to a signal cutoff detector. Depending on the degree of an autocorrelation of a data signal obtained by an autocorrelation detector, the signal cutoff detector detects abnormality/normality. Depending on a level of a control signal to a VCO contained in a frequency phase-locked loop for use in clock generation, an out-of-synchronization detector makes determination of abnormality/normality. Outputs of both the detectors are ORed at an alarm processor and when at least one of the detectors detects abnormality, the detector generates an alarm.