Abstract: A semiconductor device includes an epitaxial substrate. The epitaxial substrate includes a substrate. A strain relaxed layer covers and contacts the substrate. A III-V compound stacked layer covers and contacts the strain relaxed layer. The III-V compound stacked layer is a multilayer epitaxial structure formed by aluminum nitride, aluminum gallium nitride or a combination of aluminum nitride and aluminum gallium nitride.

Abstract: Systems with a contouring method are provided for contouring one or more targets that correspond to specific organs and/or tumors in a three-dimensional medical image of a patient using neural networks. The contouring system includes a storage unit, a processing unit, and a plurality of modules that are computer operable. The processing unit is used to obtain the image, and then to generate one or more contouring images using a contouring method. The contouring method includes enhancing image features and improving contouring accuracy using an image preprocessing module, and extracting a plurality of multi-scale image representations and expanding these representations to one or more contouring images using a neural network-based contouring module.

Abstract: A maintenance method for network connection and a computer system are provided. The method is adapted to a computer system having a timer. The timer is configured to regularly wake up the computer system to check whether a network connection is working normally. In the method, the computer system is waked up at intervals of a first time interval within a predetermined period and a current IP address of the computer system is extracted. The predetermined period is divided into a plurality of periods by the first time interval. Whether a change occurs on the IP address is determined withing each of the periods, and accordingly the computer system is waked up to check the network connection.

Abstract: A method for keeping remote connection, an electronic device, and a server are provided. After establishing a first network connection, the electronic device enters a power-saving state from an operation state. While operating in the power-saving state, a communication module of the electronic device continuously detects a keep-alive packet transmitted by the server via the first network connection. If an error of reception of the keep-alive packet occurs, the electronic device returns to the operation state from the power-saving state in response to a wake-up signal, so as to re-establish a second network connection between the electronic device and the server.

Abstract: A maintenance method for network connection and a computer system are provided. The method is adapted to a computer system having a timer. The timer is configured to regularly wake up the computer system to check whether a network connection is working normally. In the method, the computer system is waked up at intervals of a first time interval within a predetermined period and a current IP address of the computer system is extracted. The predetermined period is divided into a plurality of periods by the first time interval. Whether a change occurs on the IP address is determined withing each of the periods, and accordingly the computer system is waked up to check the network connection.

Abstract: A maintenance method for network connection and a computer system are provided. The method is adapted to a computer system having a timer. The timer is configured to regularly wake up the computer system to check whether a network connection is working normally. In the method, the computer system is waked up at intervals of a first time interval within a predetermined period and a current IP address of the computer system is extracted. The predetermined period is divided into a plurality of periods by the first time interval. Whether a change occurs on the IP address is determined within each of the periods, and accordingly the computer system is waked up to check the network connection.

Abstract: A maintenance method for network connection and a computer system are provided. The method is adapted to a computer system having a timer. The timer is configured to regularly wake up the computer system to check whether a network connection is working normally. In the method, the computer system is waked up at intervals of a first time interval within a predetermined period and a current IP address of the computer system is extracted. The predetermined period is divided into a plurality of periods by the first time interval. Whether a change occurs on the IP address is determined within each of the periods, and accordingly the computer system is waked up to check the network connection.

Abstract: A method for keeping remote connection, an electronic device, and a server are provided. After establishing a first network connection, the electronic device enters a power-saving state from an operation state. While operating in the power-saving state, a communication module of the electronic device continuously detects a keep-alive packet transmitted by the server via the first network connection. If an error of reception of the keep-alive packet occurs, the electronic device returns to the operation state from the power-saving state in response to a wake-up signal, so as to re-establish a second network connection between the electronic device and the server.

Abstract: An electronic device and a method for adjusting a pixel clock frequency thereof are provided. The electronic device automatically detects whether or not the electronic device has a wireless communication module during a boot procedure. If the electronic device has the wireless communication module, the electronic device reads an adjustment parameter corresponding to a panel model of the electronic device through a lookup table stored in the electronic device and adjusts the pixel clock frequency according to the adjustment parameter so as to avoid generating harmonics of the panel pixel clock in an operating frequency band of the wireless communication module.

Abstract: A cross-layer rate adaptation mechanism for wireless local area network (WLAN) can obtain the channel state by calculating the Eb/N0 ratio of ACK frame transmitted from the receiver side. The mechanism determines the transmission rate of the next frame by referring to a predefined reduced mode table. When receiving an ACK frame fails, the mechanism can automatically lower the transmitting rate of the next transmission. Therefore, the method can reduce the damage to the system when ACK frame failure happens.

Abstract: A subscriber of wireless system and the operation method thereof are disclosed. The subscriber includes a buffer, a scheduler, a modem, an MAP decoder, a bandwidth allocator and a PDU constructor. The buffer receives the output data from the upper layer unit thereof. The scheduler is coupled to the buffer and schedules each connection data in the buffer prior to decoding the MAP. The modem provides a signal modulation/demodulation interface. The MAP decoder is coupled to the modem. The bandwidth allocator is coupled to the MAP decoder and allocates a bandwidth to each connection according to the result of decoding the MAP. The PDU constructor is respectively coupled to the bandwidth allocator, the buffer and the modem, so that the PDU constructor reads out the data of each connection to build a data burst according to the bandwidth allocation result of each connection.

Abstract: A cross-layer rate adaptation mechanism for wireless local area network (WLAN) can obtain the channel state by calculating the Eb/N0 ratio of ACK frame transmitted from the receiver side. The mechanism determines the transmission rate of the next frame by referring to a predefined reduced mode table. When receiving an ACK frame fails, the mechanism can automatically lower the transmitting rate of the next transmission. Therefore, the method can reduce the damage to the system when ACK frame failure happens.