Abstract: A power supply device including a converter having a switch circuit to which an input voltage is supplied and a coil coupled between the switch circuit and an output end from which an output voltage is output; and a control circuit comparing between a feedback voltage and a reference voltage, and on/off controls the switch circuit according to a comparison result; wherein, the control circuit includes a current gradient detection circuit performs detection of a gradient of a coil current flows thorough the coil during an off period of the switch circuit and generates a slope voltage according to a result of the detection; and an adder circuit performs one of generating the feedback voltage by adding the slope voltage to a voltage according to the output voltage and generating the reference voltage by adding the slope voltage to a standard voltage that is set according to the output voltage.

Abstract: Disclosed are systems, methods and computer program products for classifying users of antivirus software based on user's level of expertise in the field of computer security. In one example, the system receives from antivirus software deployed on a user's computer information about security of the computer and history of user's usage of the software. The system categorizes the received information into categories based on (i) a number of computer threats detected by the user, (ii) a frequency of malware infections of the user's computer, and (iii) a level of user's proficiency with the antivirus software. The system then selects condition-action rules for each category of information and applies the selected rules to the categorized information to determine user's level of expertise in computer security. Finally, the system classifies the user as one of an expert or typical user based on the user's level of expertise.

Abstract: Use of flat surfaces comprising perfluorinated polymers in the determination of the binding constant of two interacting molecular species by using measurements of reflected light intensity, said surface comprising at least one molecule with the receptor function adsorbed or immobilized on said surface, and at least one ligand which interacts with the receptor.

Abstract: A novel imaging apparatus capable of correcting a focus state by an AF detection value both simply and surely has been disclosed. The imaging apparatus comprises an auto-focus drive section for moving a lens, an AF processing section for calculating an AF detection value indicating the focus state from imaging data, a luminance processing section for calculating a luminance value from the imaging data, a correction section for calculating a corrected AF detection value by correcting the calculated AF detection value by the calculated luminance value, and a control section for controlling the auto-focus drive section based on the calculated corrected AF detection value. The imaging data is data not having been subjected to auto-exposure processing.