Abstract: Disclosed is a semiconductor device and a method for fabricating such semiconductor device, specifically a High Electron Mobility Transistor (HEMT) with a back barrier layer for blocking electron leakage and improve threshold voltage. In one embodiment, a semiconductor device, includes: a Gallium Nitride (GaN) layer; a front barrier layer over the GaN layer; a source electrode, a drain electrode and a gate electrode formed over the front barrier layer; a 2-Dimensional Electron Gas (2-DEG) in the GaN layer at a first interface between the GaN layer and the front barrier layer; and a back barrier layer in the GaN layer, wherein the back barrier layer comprises Aluminum Nitride (AlN).

Abstract: An unmanned aerial vehicle can be configured to adjust a beam direction, provide path information, act as a base station, act as a cluster head, include an improved directional antenna or array of directional antennas, communicate in a collaboration using belief propagation, receive communications from a serving station aiding in navigation or improved signal performance, or the like.

Abstract: A system for exercise assessment and prescription generation, which is signally connected with at least one exercise device includes a biological information collecting module, an assessing standard generating module, an exercising information collecting module and a personal prescription generating module. The biological information collecting module collects biological information of a user. The assessing standard generating module is signally connected with the biological information collecting module and a cloud data platform, and for generating an assessing standard by calculating the biological information and the plurality of reference information in the cloud data platform. The exercising information collecting module is signally connected with at least one exercise device, and obtains assessed exercising information.

Abstract: An eddy current resistance generating device includes a magnet base, a plurality of magnets, a conductive member and a friction set. The magnet base has two inner walls. The magnets are disposed on the two inner walls of the magnet base, wherein the magnets on the two inner walls are face to each other. The conductive member is located between the magnets on the two inner walls for generating an eddy current resistance while the magnets are moved relative to the conductive member. The friction set is disposed between each of the magnets and the conductive member, wherein the friction set includes at least one friction matrix.

Abstract: A sit to stand functional exerciser includes a main base body, a seat mechanism, a linking mechanism and an assisting force adjusting mechanism. The linking mechanism is linked with the seat mechanism and includes a connecting base, a main linking shaft and a secondary linking shaft. The assisting force adjusting mechanism is linked with the seat mechanism and includes a main linking casing, an assisting force setting rail and a positioning assembly. The assisting force setting rail includes a plurality of concaves. The positioning assembly is selectively positioned in one of the concaves so as to adjust a predetermined assisting force.

Abstract: An eddy current resistance generating device includes a magnet base, a plurality of magnets, a conductive member and a friction set. The magnet base has two inner walls. The magnets are disposed on the two inner walls of the magnet base, wherein the magnets on the two inner walls are face to each other. The conductive member is located between the magnets on the two inner walls for generating an eddy current resistance while the magnets are moved relative to the conductive member. The friction set is disposed between each of the magnets and the conductive member, wherein the friction set includes at least one friction matrix.

Abstract: A sit to stand functional exerciser includes a main base body, a seat mechanism, a linking mechanism and an assisting force adjusting mechanism. The linking mechanism is linked with the seat mechanism and includes a connecting base, a main linking shaft and a secondary linking shaft. The assisting force adjusting mechanism is linked with the seat mechanism and includes a main linking casing, an assisting force setting rail and a positioning assembly. The assisting force setting rail includes a plurality of concaves. The positioning assembly is selectively positioned in one of the concaves so as to adjust a predetermined assisting force.

Abstract: An eddy current resistance generating device includes a magnet base, a plurality of magnets, a conductive member and a friction set. The magnet base has two inner walls. The magnets are disposed on the two inner walls of the magnet base, wherein the magnets on the two inner walls are face to each other. The conductive member is located between the magnets on the two inner walls for generating an eddy current resistance while the magnets are moved relative to the conductive member. The friction set is disposed between each of the magnets and the conductive member, wherein the friction set includes at least one friction matrix.

Abstract: An exercise apparatus includes a frame body, two driving levers, two pedals, a linking device and at least one resistance device. The driving levers are pivotally connected to two side frames of the frame body, respectively. The pedals are connected to the two driving levers, respectively. The linking device is connected the driving levers so as to lead the driving levers to be swung reciprocally and simultaneously. The resistance device is driven by one of the driving levers so as to generate a magnetic resistance.

Abstract: An exercise apparatus includes a frame body, two driving levers, two pedals, a linking device and at least one resistance device. The driving levers are pivotally connected to two side frames of the frame body, respectively. The pedals are connected to the two driving levers, respectively. The linking device is connected the driving levers so as to lead the driving levers to be swung reciprocally and simultaneously. The resistance device is driven by one of the driving levers so as to generate a magnetic resistance.

Abstract: A high knees exercise apparatus includes a base, a driving mechanism, a linkage mechanism and two magnetic resistance. The driving mechanism is located on the base and includes two driving member which is driven swung along arc path. The linkage mechanism is for leading the driving members swung reversely in response to each other. The two magnetic resistance devices are for providing magnetic resistances in accordance with swings of the two driving members respectively.

Abstract: A direction-reversing device includes a frame, two side wheels, a reverse wheel module, a flexible member and a tension adjusting mechanism. The side wheels are pivotally disposed on two side of the frame, respectively. The reverse wheel module disposed at the frame includes two reverse wheels. The reverse wheels are coaxially disposed to the frame and perpendicular to the side wheels. The flexible member is wound around the side wheels and the reverse wheels. The tension adjusting mechanism disposed at the frame includes at least one fastener. The fastener connecting the reverse wheel module to the frame is for changing a relative position between the frame and the reverse wheel module. Therefore, a tension of the flexible member is changed accordingly.

Abstract: An exercise equipment includes a base, an operating device and a magnetic resistance device. The operating device is movably disposed on the base. The magnetic resistance device is connected to the operating device and the base, wherein the magnetic resistance device is for providing a magnetic resistances in accordance with an operation of the operating device.

Abstract: A rehabilitation equipment includes a main frame, a rotating mechanism, a linking mechanism and a resistance mechanism. The rotating mechanism is disposed on the main frame. The linking mechanism is linked up with the rotating mechanism. The resistance mechanism is for providing a resistance.

Abstract: A high knees exercise apparatus includes a base, two actuator members, and two pedals. The base includes a supporting member and a pivot portion. The pivot portion has a pivot axis. The actuator members are pivotally connected to two sides of the pivot portion respectively and moving in response to each other reversely. Each of the actuator members includes a lower portion swinging along an arc path centered on the pivot axis. The arc path includes a first arc extended from a virtual vertical line passing through the pivot axis and an angle of the first arc is 45 degrees to 100 degrees. Each of the pedals is pivotally connected to a free end of each of the lower portions.

Abstract: A rehabilitation equipment includes a main frame, a rotating mechanism, a linking mechanism and a resistance mechanism. The rotating mechanism is disposed on the main frame. The linking mechanism is linked up with the rotating mechanism. The resistance mechanism is for providing a resistance.

Abstract: A high knees exercise apparatus includes a base, a driving mechanism, a linkage mechanism and two magnetic resistance. The driving mechanism is located on the base and includes two driving member which is driven swung along arc path. The linkage mechanism is for leading the driving members swung reversely in response to each other. The two magnetic resistance devices are for providing magnetic resistances in accordance with swings of the two driving members respectively.

Abstract: A leg rehabilitation apparatus is provided. The leg rehabilitation apparatus includes a base, a seat, an oscillating set, a linking-up set, a resisting device and a buffer. The seat is disposed on the base. The oscillating set is pivotally connected to the base. The linking-up set is connected with the oscillating set and coupled with the oscillating set. The resisting device is connected to the oscillating set and provides a resisting force to the oscillating set during the leg rehabilitation. The buffer is disposed on the base and connected to the linking-up set. The buffer provides a buffering force during the leg rehabilitation.

Abstract: A high knees exercise apparatus includes a base, a driving mechanism, a linkage mechanism and two magnetic resistance. The driving mechanism is located on the base and includes two driving member which is driven swung along arc path. The linkage mechanism is for leading the driving members swung reversely in response to each other. The two magnetic resistance devices are for providing magnetic resistances in accordance with swings of the two driving members respectively.

Abstract: An integrated rehabilitation system with feedback mechanism for a rehabilitant includes a computing center, a memory unit, a plurality of screens, a following module, a plurality of rehabilitation machines, and a feedback module. The memory unit, the screens, the following module, the rehabilitation machines and the feedback module are signally connected with the computing center. A target value of the rehabilitant is stored in the memory unit. A movement-indicating image and a movement mark are displayed on each of the screens. A visual following mark displayed on each of the screens is provided by the following module and corresponds to the target value. Each of the rehabilitation machines corresponds to one of the screens respectively, the movement-indicating image displayed on the screen corresponds to the rehabilitation machine, and the movement mark displayed on the screen corresponds to an operation value generated from the rehabilitation machine.