摘要:
A lawn mower including an engine having an output shaft, an air impeller, a plurality of cutter blades, and a driven shaft having the air impeller and the cutter blades connected thereto. The driven shaft is connected to the output shaft of the engine through a centrifugal clutch having a drum, and a brake band is located in a path of air drawn by suction by the air impeller for clamping against the outer periphery of the drum of the centrifugal clutch to interrupt rotation of the driven shaft.
摘要:
To create signature data which certifies the time when information existed and add it to the information more efficiently than before. A time certification system for certifying the time when information existed, comprising: an identity certification data acquisition section for acquiring identity certification data generated based on the information to certify the identity of the information; a time certification data generation section for observing a target object changing with time elapse from the outside and generating time certification data based on observation data obtained as a result of the observation, in response to an instruction received from a user; a signature data generation section for generating signature data indicating that the information existed at the time when the target object was observed, based on combination of the identity certification data and the time certification data; and an information recording section for recording the signature data in association with the information.
摘要:
Multiple two dimensional graphs are combined into a single two dimensional graph wherein correlations between dimensions are maintained. Dimensions in the graph can be superimposed on each other and displayed while maintaining the two dimensional format. This enables the two dimensional graph to be converted to three or more dimensions while maintaining the format and presentation in a two dimensional visual display.
摘要:
To distribute Web contents, while ensuring security without increasing a burden imposed on users. The present invention comprises a distribution server for distributing a web content, which is composed of a plurality of digital media associated with each other and has key data for removing a digital watermark embedded in a predetermined digital medium appended to another digital medium as an invisible watermark, and a receiving terminal for receiving and rendering the Web content distributed from the distribution server. The receiving terminal includes a watermark removal control means for extracting key data from a digital medium of a Webcast content, a decorder, for removing a digital watermark embedded in another digital medium corresponding to the digital medium from which the key data is extracted, and a browser for rendering the digital medium from which the digital watermark has been removed.
摘要:
A number of potential customers for a product or service are segmented into a number of clusters organized over a number of dimensions by one or more attributes of the potential customers. Each potential customer is segmented into no more than one cluster. No data exists regarding the potential customers as to purchase of the product or service. A number of initial clusters are selected. The success factor of each of these initial clusters is determined. For the initial cluster having the highest success factor, one or more subsequent clusters are selected that are located near this initial cluster. The success factor of each of these subsequent clusters is then determined. For the subsequent cluster having the highest success factor, the potential customers segmented into this cluster are solicited as the most likely customers of the product or service in question.
摘要:
Multiple two dimensional graphs are combined into a single two dimensional graph wherein correlations between dimensions are maintained. Dimensions in the graph can be superimposed on each other and displayed while maintaining the two dimensional format. This enables the two dimensional graph to be converted to three or more dimensions while maintaining the format and presentation in a two dimensional visual display.
摘要:
To distribute Web contents, while ensuring security without increasing a burden imposed on users. The present invention comprises a distribution server for distributing a web content, which is composed of a plurality of digital media associated with each other and has key data for removing a digital watermark embedded in a predetermined digital medium appended to another digital medium as an invisible watermark, and a receiving terminal for receiving and rendering the Web content distributed from the distribution server. The receiving terminal includes a watermark removal control means for extracting key data from a digital medium of a Webcast content, a decorder, for removing a digital watermark embedded in another digital medium corresponding to the digital medium from which the key data is extracted, and a browser for rendering the digital medium from which the digital watermark has been removed.
摘要:
A method for die-casting a magnesium alloy comprises the step of casting a die cast product free of any hot tearing, shrinkage tearing and shrinkage cavity starting from a magnesium alloy comprising i) 1 to 10% by weight of aluminum; ii) at least one member selected from the group consisting of 0.2 to 5% by weight of a rare earth metal, 0.02 to 5% by weight of calcium and 0.2 to 10% by weight of silicon; and iii) not more than 1.5% by weight of manganese, and the balance of magnesium and inevitable impurities, using a cold chamber type die-casting machine, wherein a) the temperature of the molten magnesium alloy is maintained at 650 to 750°C.; b) the charging velocity of the molten metal is set at {fraction (1/100)} to {fraction (10/100)} second; and c) the intensified pressure after the charging is set at a level of not less than 200 kgf/cm2. Thus, a die cast product free of any hot tearing, shrinkage tearing and shrinkage cavity can be produced by appropriately specifying injection conditions, mold conditions, conditions for melting a magnesium alloy and mold plan in the cold chamber type die-casting machine, or by appropriately controlling the temperature of the molten metal from the molten metal-accommodating pot to the gate portion of the machine.
摘要:
A radius of a rotating grindstone is specified by a new means with a simple structure out of contact with the rotating grindstone. In a grinding machine that numerically controls a feed shaft (x-axis) of a wheel spindle stock, a device comprises a non-contact detector to detect a rotating grindstone on the wheel spindle stock reaching two different fixed positions in a feed direction of the feed shaft, and an arithmetic means to compute a radius “r” of the rotating grindstone by data detected from the non-contact detector.
摘要:
A motor drive system comprises a motor driven by a variable frequency power supply and a machine driven by the motor, which are mechanically connected by the drive shaft of the motor and the shaft of the machine via bearings. A stationary portion of the motor and the frame of the machine are electrically connected by a low-impedance conductor, so that a current can be caused to flow at least partially between the stationary portion of the motor and the frame of the machine.