Abstract: The present invention discloses a vessel tracking and monitoring system and operating method thereof. Specifically, the vessel tracking and monitoring system comprises at least one camera, a processing module and a storage module. On the other hand, the processing module may keep the water object which is detected and recognized by the at least one camera in the center area of a monitoring screen. Therefore, the present invention may track and recognize the type of the at least one water object, assisting areas such as ports in managing and tracking water object arrivals and departures under various environmental conditions.

Abstract: A communication device includes a metal mechanism element, a feeding radiation element, a tuning radiation element, and a dielectric substrate. The metal mechanism element has a closed slot. The feeding radiation element extends across the closed slot. The feeding radiation element has a feeding point. The tuning radiation element extends across the closed slot. The first end of the tuning radiation element is coupled to the metal mechanism element. The second end of the tuning radiation element is adjacent to the metal mechanism element or is coupled to the metal mechanism element. The dielectric substrate is adjacent to the metal mechanism element. The feeding radiation element and the tuning radiation element are both disposed on the dielectric substrate. An antenna structure is formed by the feeding radiation element, the tuning radiation element, and the closed slot of the metal mechanism element.

Abstract: An antenna structure includes a first ground element, a feeding element, a shorting element, a parasitic tuning element, a second ground element, a first parasitic element, a second parasitic element, and a dielectric substrate. The feeding element is coupled through the shorting element to the first ground element. The parasitic tuning element is coupled to the first ground element. The parasitic tuning element is at least partially surrounded by the feeding element, the shorting element, and the first ground element. The second ground element is adjacent to the feeding element. The first parasitic element and the second parasitic element are coupled to the second ground element. The feeding element, the shorting element, the parasitic tuning element, the first parasitic element, the second parasitic element, and at least one of the first ground element and the second ground element are disposed on the dielectric substrate.

Abstract: A communication device includes a metal mechanism element, a feeding radiation element, a tuning radiation element, and a dielectric substrate. The metal mechanism element has a closed slot. The feeding radiation element extends across the closed slot. The feeding radiation element has a feeding point. The tuning radiation element extends across the closed slot. The first end of the tuning radiation element is coupled to the metal mechanism element. The second end of the tuning radiation element is adjacent to the metal mechanism element or is coupled to the metal mechanism element. The dielectric substrate is adjacent to the metal mechanism element. The feeding radiation element and the tuning radiation element are both disposed on the dielectric substrate. An antenna structure is formed by the feeding radiation element, the tuning radiation element, and the closed slot of the metal mechanism element.

Abstract: An apparatus for modularly adjusting a shock absorber includes a base, a plurality of pins, and a selecting mechanism. The pins are connected to the base. The selecting mechanism can select at least one of the pins to control at least one valve of the shock absorber.

Abstract: An adjusting method and a structure for a seat post of a bicycle are provided. The structure of the seat post includes an adjusting tube, four pulleys, a pushing member, a main tube, an elastic member, and a cord. The adjusting tube is coaxially movably disposed in the main tube, while the pushing member is coaxially movably disposed in the adjusting tube and coaxially fixed with the main tube. One of the pulleys is pivotally disposed in the adjusting tube, and the other pulleys are pivotally disposed in the pushing member. Two of the pulleys inside the pushing member are movable along the pushing member. The cord is wound around the four pulleys. The elastic member is disposed in the pushing member and can push the pulleys to move. Pulleys moving along the pushing member push the adjusting tube moving outwardly form the main tube.

Abstract: An adjusting method and a structure for a seat post of a bicycle are provided. The structure of the seat post includes an adjusting tube, four pulleys, a pushing member, a main tube, an elastic member, and a cord. The adjusting tube is coaxially movably disposed in the main tube, while the pushing member is coaxially movably disposed in the adjusting tube and coaxially fixed with the main tube. One of the pulleys is pivotally disposed in the adjusting tube, and the other pulleys are pivotally disposed in the pushing member. Two of the pulleys inside the pushing member are movable along the pushing member. The cord is wound around the four pulleys. The elastic member is disposed in the pushing member and can push the pulleys to move. Pulleys moving along the pushing member push the adjusting tube moving outwardly form the main tube.

Abstract: A seat post is disclosed. The seat post includes a pneumatic cylinder, a hollow pneumatic piston, a gap, a seal, a hydraulic cylinder, a hollow hydraulic piston, and a valve. The gap exists between the pneumatic cylinder and the pneumatic piston and communicates with the inside of the pneumatic piston. The seal is disposed at the pneumatic cylinder for sealing the gap. The hydraulic cylinder is disposed in the pneumatic piston and communicates with the inside of the pneumatic piston. One end of the hydraulic piston passes through pneumatic piston and is inserted into the hydraulic cylinder. The other end is disposed in the pneumatic cylinder and communicates with the inside of the pneumatic cylinder. The valve connects the pneumatic piston and the hydraulic cylinder for opening or closing the communication between the pneumatic piston and the hydraulic cylinder.

Abstract: A seat post is disclosed. The seat post includes a pneumatic cylinder, a hollow pneumatic piston, a gap, a seal, a hydraulic cylinder, a hollow hydraulic piston, and a valve. The gap exists between the pneumatic cylinder and the pneumatic piston and communicates with the inside of the pneumatic piston. The seal is disposed at the pneumatic cylinder for sealing the gap. The hydraulic cylinder is disposed in the pneumatic piston and communicates with the inside of the pneumatic piston. One end of the hydraulic piston passes through pneumatic piston and is inserted into the hydraulic cylinder. The other end is disposed in the pneumatic cylinder and communicates with the inside of the pneumatic cylinder. The valve connects the pneumatic piston and the hydraulic cylinder for opening or closing the communication between the pneumatic piston and the hydraulic cylinder.

Abstract: An apparatus for modularly adjusting a shock absorber includes a base, a plurality of pins, and a selecting mechanism. The pins are connected to the base. The selecting mechanism can select at least one of the pins to control at least one valve of the shock absorber.