Abstract: A multi-purpose precision machine tool is provided, which has main structures including a machine tool body, and a first workpiece fixing mechanism, a second workpiece fixing mechanism, and a tool mechanism provided on the machine tool body. The first workpiece fixing mechanism and the second workpiece fixing mechanism respectively include an internally expanding clamp and a soft-jaw chuck for clamping a workpiece, so as to not only drive the workpiece to rotate, and but also drive the workpiece to perform horizontal and vertical linear displacement. Therefore, the internally expanding clamp can first clamp the workpiece to machine one end of the workpiece, and then the soft-jaw chuck clamps the other end of the workpiece to machine the other end of the workpiece.

Abstract: This invention discloses a damping hinge that includes a first clamp plate and a second clamp plate, wherein one or more damping mechanisms are arranged on the first clamp plate and/or the second clamp plate. The damping mechanism includes a fixed pressure block, a movable pressure block which is able to move in the vertical direction, and a damper which is arranged vertically and has two ends connected to the fixed pressure block and the movable pressure block respectively. A first inclined surface of the movable pressure block is in abutting connection with a second inclined surface on the other clamp plate. This invention drived the damper to compress and retract vertically and improved the damping effect and service life of the damper.

Abstract: An antenna apparatus and a terminal, where the antenna apparatus includes an antenna body and at least one stub, where a feed terminal is disposed on the antenna body, one end of the stub is electrically coupled to a coupling point between the feed terminal and a first open-circuit end of the antenna body, and the other end of the stub is an open-circuit end, and an antenna body length between the coupling point and the feed terminal is a half of a wavelength corresponding to a specified operating frequency, and a length of the stub is one quarter of the wavelength corresponding to the specified operating frequency.

Abstract: An electronic device includes a printed circuit board (PCB). The PCB includes first and second grids disposed at a top surface and a bottom surface of the PCB, respectively. Each grid includes a plurality of footprint pins, and a plurality of vias extending through the PCB to the top and bottom surfaces. Each footprint pin includes a connecting end and a free end that opposes the connecting end. Each via includes a contact end located at one of grids and is in electrical contact with the connecting end of one of the footprint pins, and each via further includes a non-contact end that is located at the other of the grids and is not in electrical contact with any of the footprint pins. First and second connectors are mounted to the PCB top and bottom surfaces and connect with the footprint pins of the first and second grids.

Abstract: An antenna includes a radiator, where the radiator includes three parts separated by a gap, an end of a second part proximate to a first part is a first end, and an end of the second part proximate to a third part is a second end, a medium-high frequency feeder, electrically coupled to the radiator at a first coupling point, a low frequency feeder electrically coupled to the radiator, a first ground cable electrically coupled to the radiator at a second coupling point, where an adjustable component for controlling conduction of the first ground cable is disposed on the first ground cable, a length from the second coupling point to an end that is in the first end and the second end and that is further from the first coupling point is a quarter of a wavelength corresponding to a resonance frequency.

Abstract: A method for enforcing a number of context model based policies with forward chaining comprising applying a policy set including a plurality of policies to an instantiated context model which includes a set of referenced instance documents in XML format, determining whether the instantiated context model should be updated, if the instantiated context model should be updated, executing an updating operation, re-generating a new instantiated context model according to the updated instance documents and the instantiated context model, and applying the policy set to the new instantiated context model, and wherein the policies include a condition part and an action part.

Abstract: An antenna of a mobile terminal is provided. At least two slots are disposed in a metal bezel of the mobile terminal, and the two slots divide the metal bezel into a first metal section, a second metal section, and a third metal section. A radiating element of the antenna includes the second metal section located between the two slots, a first conductor, and a second conductor. The first conductor and the second conductor are separately connected to the second metal section. A feed point is connected to the first conductor by using a matching network. A ground point is connected to the second conductor to form a loop antenna. An electrical length path of current from the feed point to the second metal section is not equal to an electrical length path of current from the ground point to the second metal section.

Abstract: An antenna system and a terminal device. The, where the antenna system includes a first feed point, a first ground point, a second feed point, a second ground point, a third ground point, a fourth ground point, a first radiator, a second radiator, a first resonance structure, and a second resonance structure, where the first feed point is coupled to the first radiator, the second feed point is coupled to the second radiator, the first radiator is coupled to the first ground point, and the second radiator is coupled to the second ground point, the first resonance structure is electromagnetically coupled to the first radiator at a first distance from the first radiator, and the second resonance structure is electromagnetically coupled to the second radiator at a second distance from the second radiator.

Abstract: A fold rear-view mirror assembly (100) for motor vehicles is disclosed. It comprises a base member (120) to be mounted on a motor vehicle, a mirror housing (110), a shaft (140) for rotation of the mirror housing (110) to the base member (120) between operative and folded conditions, an elastic element (160) associated with the shaft (140) for applying a force on the base member (120) and the mirror housing (110), and a retaining mechanism (200) comprising a locking member (260) carrying a retaining element (250) clamped therein such that it can be moved to the locking member (260) between a release position where it can be moved to the shaft (140), and a lock position where it is received in a shaft recess (142) causing the retaining element (250) to be locked to the shaft (140) so that the elastic element (160) is axially retained against the locking member (260).

Abstract: An electronic device includes a printed circuit board (PCB). The PCB includes first and second grids disposed at a top surface and a bottom surface of the PCB, respectively. Each grid includes a plurality of footprint pins, and a plurality of vias extending through the PCB to the top and bottom surfaces. Each footprint pin includes a connecting end and a free end that opposes the connecting end. Each via includes a contact end located at one of grids and is in electrical contact with the connecting end of one of the footprint pins, and each via further includes a non-contact end that is located at the other of the grids and is not in electrical contact with any of the footprint pins. First and second connectors are mounted to the PCB top and bottom surfaces and connect with the footprint pins of the first and second grids.

Abstract: At least one XML document to be validated is parsed, and XML data in the at least one XML document is represented as data objects in at least one data object model in a memory. At least one rule document is parsed and a rule object model that includes rule objects is created in the memory. At least part of the data objects are extracted from the at least one data object model and at least part of rule objects are extracted from the rule object model. Partial validation is performed in a corresponding execution context that validates the extracted at least part of the data objects based upon the extracted at least part of the rule objects.

Abstract: At least one XML document to be validated is parsed, and XML data in the at least one XML document is represented as data objects in at least one data object model in a memory. At least one rule document is parsed and a rule object model that includes rule objects is created in the memory. At least part of the data objects are extracted from the at least one data object model and at least part of rule objects are extracted from the rule object model. Partial validation is performed in a corresponding execution context that validates the extracted at least part of the data objects based upon the extracted at least part of the rule objects.

Abstract: This application provides a multi-band antenna. The antenna includes a feeder and a radiating element connected to the feeder, and further includes: a first notch structure, where the first notch structure is located on a side of the radiating element and is coupled to the radiating element; and a second notch structure, where the second notch structure is located on a side of the first notch structure and far from the radiating element, and an end that is of the second notch structure and that is far from the radiating element is grounded. The first notch structure may be selectively connected to the ground or to the second notch structure, the first notch structure may be connected to the second notch structure in some embodiments using a first tuning device.

Abstract: An antenna includes a radiator, where the radiator includes three parts separated by a gap, an end of a second part proximate to a first part is a first end, and an end of the second part proximate to a third part is a second end, a medium-high frequency feeder, electrically coupled to the radiator at a first coupling point, a low frequency feeder electrically coupled to the radiator, a first ground cable electrically coupled to the radiator at a second coupling point, where an adjustable component for controlling conduction of the first ground cable is disposed on the first ground cable, a length from the second coupling point to an end that is in the first end and the second end and that is further from the first coupling point is a quarter of a wavelength corresponding to a resonance frequency.

Abstract: An antenna, an antenna apparatus, and a terminal are provided. The antenna includes a feeding point, a feeding stub, and a coupling stub. The feeding stub is electrically connected to the feeding point. The coupling stub is coupled to the feeding stub. The coupling stub includes at least two grounding points By selecting different grounding combinations of the at least two grounding points of the coupling stub, an antenna clearance area does not need to be increased while multi-frequency coverage of the antenna is implemented.

Abstract: An electronic device includes a printed circuit board (PCB). The PCB includes first and second grids disposed at a top surface and a bottom surface of the PCB, respectively. Each grid includes a plurality of footprint pins, and a plurality of vias extending through the PCB to the top and bottom surfaces. Each footprint pin includes a connecting end and a free end that opposes the connecting end. Each via includes a contact end located at one of grids and is in electrical contact with the connecting end of one of the footprint pins, and each via further includes a non-contact end that is located at the other of the grids and is not in electrical contact with any of the footprint pins. First and second connectors are mounted to the PCB top and bottom surfaces and connect with the footprint pins of the first and second grids.

Abstract: The present invention relates to a composite flame retardant comprising: (a) an expandable graphite; (b) a liquid poly-functional amino resin polyol having a functionality of from 3 to 6 and a hydroxyl value of from 120 to 500 mg KOH/g; (c) optionally a liquid phosphate flame retardant; and (d) a wetting agent. The present invention also relates to the use of said composite flame retardant in the preparation of polyurethane materials, to polyurethane materials comprising said composite flame retardant and a process for the preparation thereof.

Abstract: The present disclosure relates to systems and methods for uploading data. The system may perform the methods to acquire a first data item from a database; acquire a second data item, wherein the second data item may be an updated version of the first data item; determine an increment data item based on the first data item and the second data item; determine an updating strategy with respect to the increment data item; and transmit the increment data item to update the first data item stored in the database via a network based on the updating strategy.

Abstract: Embodiments of the present invention relate to the field of antenna technologies, and provide a mobile terminal, to generate different resonance frequencies. The slot antenna includes a system circuit board, a radiator, and a first adjustable unit. The radiator is opposite to the electric conductor to form a slot. A feeding end is disposed on the system circuit board, the feeding end is electrically connected to the radiator, one end of the first adjustable unit is connected to the system circuit board, the other end of the first adjustable unit is connected to the radiator, and the first adjustable unit is configured to adjust a resonance frequency of the slot antenna.

Abstract: An antenna and a mobile terminal are provided. At least two slots are disposed in a metal bezel of the mobile terminal, and the two slots divide the metal bezel into three metal sections. A radiating element of the antenna includes a second metal section located between the two slots, a first conductor, and a second conductor. The first conductor and the second conductor are separately connected to the second metal section. A feed point is connected to the first conductor by using a matching network. A ground point is connected to the second conductor to form a loop antenna. An electrical length path of a current from the feed point to the second metal section is not equal to an electrical length path of a current from the ground point to the second metal section.