Abstract: A watercraft can include seats having hip supports for the riders including an operator and/or passengers thereof. Additionally, the watercraft can include a handlebar cover that is configured to prevent water from entering a steering mechanism. For example, the handlebar cover can include a lower portion and an upper portion extending downwardly over the lower portion.

Abstract: A strip-rolling cemented carbide composite roll comprising an inner layer made of steel or iron, and an outer layer of cemented carbide bonded to an outer surface of the inner layer, wherein a thermal shock coefficient R represented by R=?c(1??)/E? is 400 or more in the outer layer, wherein ?c is a four-point bending strength at room temperature, ? is a Poisson's ratio at room temperature, E is a Young' modulus at room temperature, and ? is an average thermal expansion coefficient between room temperature and 800° C.

Abstract: A fluorescence detection apparatus irradiates a sample with an excitation light having different wavelengths, spectrally detects fluorescence from the sample, and includes: a comparison unit for comparing the wavelength of the excitation light with the starting wavelength of a fluorescent spectrum detection bandwidth; and a determination unit for determining an excitation light irradiation timing such that the irradiation of the excitation wavelength is stopped when the wavelength of the excitation light is longer than the starting wavelength.

Abstract: A watercraft can include seats having hip supports for the riders including an operator and/or passengers thereof. Additionally, the watercraft can include a handlebar cover that is configured to prevent water from entering a steering mechanism. For example, the handlebar cover can include a lower portion and an upper portion extending downwardly over the lower portion.

Abstract: A watercraft includes an improved engine control system that eases watercraft operation. The watercraft includes a propulsion device, such as a jet propulsion unit, and an engine that powers the propulsion unit. The engine control system is configured to limit engine speed under certain conditions.

Abstract: A watercraft has an engine that is controlled by an electronic control unit and the watercraft includes a security system. The security system includes a portable transmitter unit, and also includes a mounted receiver. The portable unit is waterproof and is buoyant. The portable unit includes a housing of transparent material that allows a user to see whether water has entered the portable unit. The security system has an antenna that provides improved reception between the portable transmitter unit and the mounted receiver.

Abstract: A scan target is scanned to acquire scan data that includes tone values for each color component in a plurality of pixels; there are acquired scan profiles indicating association relationships between the aforementioned tone values and color values, which profiles specify a said association relationship for each of a plurality of scan locations in the aforementioned image scanning program code; and for scan data acquired by means of the aforementioned image scanning step, the aforementioned tone values are converted to color values with reference to the scan profile corresponding to each scan location.

Abstract: A watercraft has an engine that is controlled by an electronic control unit and the watercraft includes a security system. The security system comprises a portable transmitter and a mounted receiver. A predetermined mounting location on the watercraft of a receiver of the security system allows for improved serviceability and improved reception between the transmitter and a corresponding receiver.

Abstract: A watercraft includes an improved engine control system that eases watercraft operation. The watercraft includes a propulsion device, such as a jet propulsion unit, and an engine that powers the propulsion unit. The engine control system is configured to limit engine speed under certain conditions.

Abstract: The present invention mainly relates to an ion accelerator with significantly simplified construction, for accelerating an much larger amount of ions, wherein that a plasma-generating target 12, a vacuum chamber 16 for extracting ions from plasma generated from the plasma-generating target 12, and an ion linac 30 are connected in series, the vacuum chamber 16 is installed near an ion entrance of the ion linac 30, the ion accelerator also has a high voltage power supply boosting the vacuum chamber 16 to a desired voltage, and ions are directly injected from the vacuum chamber 16 to the ion linac 30.

Abstract: A throttle control system eases operation of the throttle lever on a small watercraft to improve rider comfort. The small watercraft includes an internal combustion engine within an engine compartment and a steering mechanism for steering the watercraft. The steering mechanism includes a handlebar assembly. The engine includes an air induction system that supplies air to the engine and includes a throttle device configured for controlling the amount of air supplied to the engine. The control system includes a throttle operator, an operator position sensor, a controller and an actuator. The throttle operator is located on the handlebar assembly and the operator position sensor and the actuator are located within the engine compartment. The operator position sensor is configured to detect the position of the throttle operator and to communicate with the controller. The actuator is configured to adjust the throttle device in response to the controller.

Abstract: A watercraft includes an improved engine control system that eases watercraft operation. The watercraft includes a propulsion device, such as a jet propulsion unit, and an engine that powers the propulsion unit. The engine control system is configured to limit engine speed under certain conditions.

Abstract: A throttle control system eases operation of the throttle lever on a small watercraft to improve rider comfort. The small watercraft includes an internal combustion engine within an engine compartment and a steering mechanism for steering the watercraft. The steering mechanism includes a handlebar assembly. The engine includes an air induction system that supplies air to the engine and includes a throttle device configured for controlling the amount of air supplied to the engine. The control system includes a throttle operator, an operator position sensor, a controller and an actuator. The throttle operator is located on the handlebar assembly and the operator position sensor and the actuator are located within the engine compartment. The operator position sensor is configured to detect the position of the throttle operator and to communicate with the controller. The actuator is configured to adjust the throttle device in response to the controller.

Abstract: There is generated a virtual tile set which virtually covers color planes of an original image without any clearance or overlap by combination of Penrose-type virtual tiles to be non-periodically provided on the planes. The respective tiles are subjected to raster conversion in accordance with predetermined gradation levels, thereby generating a raster image. Since the virtual tiles can be laid non-periodically, iteration of the same dot pattern on the raster image can be prevented.

Abstract: A small watercraft hull defines a vertically oriented, central longitudinal plane of the watercraft. The hull has an engine compartment with an internal combustion engine disposed therein. The engine has an engine body comprising a crankcase, a cylinder block and a cylinder head and includes at least one cylinder bore defining a cylinder axis. An air induction system is provided to guide air into a combustion chamber of the engine. The air induction system includes a plenum chamber. An exhaust system is also provided for guiding exhaust gases from the combustion chamber to the atmosphere. The exhaust system includes an exhaust conduit. The cylinder axis is canted with respect to the central plane and the exhaust conduit is disposed substantially on a side of the central plane to which the cylinder axis is canted.

Abstract: A throttle control system eases operation of the throttle lever on a small watercraft to improve rider comfort. The small watercraft includes an internal combustion engine and a steering mechanism for steering the watercraft. The steering mechanism includes a handlebar assembly. The engine includes an air induction system that supplies air to the engine and includes a throttle device configured for controlling the amount of air supplied to the engine. The control system includes a throttle operator, an operator position sensor, a controller and an actuator. The throttle operator is located on the handlebar assembly. The operator position sensor is configured to detect the position of the throttle operator and to communicate with the controller. The actuator is configured to adjust the throttle device in response to the controller.

Abstract: A watercraft having a water propulsion unit driven by an impeller shaft which is powered by a four-cycle internal combustion engine is disclosed. The engine has a crankshaft which drives, via a transmission, the impeller shaft. The transmission is arranged so that the crankshaft of the engine does not contact lubricant in a lubricant reservoir of a lubricating system of the engine. In a first arrangement, the four-cycle engine includes an oil reservoir positioned at a lower portion of the engine. In this arrangement, a crankshaft of the engine extends along an axis above an axis along which the impeller shaft rotates, where the crankshaft and impeller shaft are in driving relation via a gear-type transmission. In a second arrangement, the engine is provided with a dry-sump type lubricating system with an oil reservoir positioned remote of the bottom of the engine, such as on the hull.

Abstract: A watercraft has a mid-deck storage compartment. The storage compartment is mounted between a forward portion of the seat and a control mast. The storage compartment inclines rearward and partially overhangs an access opening into an engine compartment that is disposed beneath the seat. A box that is detachably connected to a deck of the watercraft defines the compartment. A cup holder can be disposed within the compartment with storage areas being defined around the cup holder and any cup or can that might be secured by the cup holder. The compartment also expands laterally as it increases in depth.

Abstract: A watercraft having a cooling system for the lubrication system of the engine, the cooling system including a reservoir, at least a portion of the reservoir being cooled by ambient water flowing through a cooling jacket in contact with the reservoir. Also disclosed is a watercraft having a cooling system for the lubrication system of the engine, the cooling system including a reservoir, at least a portion of the reservoir being cooled by direct and/or thermal contact with ambient water in which the watercraft floats.

Abstract: When a screen for halftoning of N×N pixel size is realized, gamma conversion cells, the number of which is N, are prepared for converting a pixel value of one pixel into a dot signal. When these N gamma conversion cells are repeatedly applied to N×N pixels by a predetermined order pattern, dots are respectively grown round N growing cores on the screen of N×N pixels.