Abstract: An engine includes an engine water jacket, a water pump and a thermostat assembly. The engine water jacket, the thermostat assembly and the water pump are connected to form a circulation passage. The thermostat assembly is connected between the engine water jacket and the water pump. The engine water jacket includes a cylinder head water jacket and a cylinder block water jacket. The thermostat assembly is configured to enable the coolant to enter the cylinder head water jacket of the cylinder head water jacket and the cylinder block water jacket upon cold start.

Abstract: An engine includes a cylinder head and a cylinder block. The cylinder head has a first water jacket passage, an exhaust passage and a second water jacket passage. The exhaust passage is located between the first water jacket passage and the second water jacket passage. The first water jacket passage and the second water jacket passage are disposed close to the exhaust passage. The first water jacket passage is in communication with the second water jacket passage. The second water jacket passage is in communication with the cylinder block. The second water jacket passage has a water inlet passage.

Abstract: The technology of this application relates to an erbium-doped fiber. The erbium-doped fiber can be used in the fields of amplifiers, optical communications, rare-earth-doped fiber preparation, and the like. A fiber core of the erbium-doped fiber includes a first layer and a second layer from inside to outside. The first layer includes a center of the fiber core. The second layer is an annulus, and an outer ring of the annulus is an outer ring of the fiber core. An average doping concentration of erbium ions of the first layer is higher than an average doping concentration of erbium ions of the second layer. An ASE can be reduced by reducing a doping concentration of erbium ions of the second layer, to further reduce a noise figure of the erbium-doped fiber and improve communications quality.

Abstract: A wireless multi-channel implantable device. In some embodiments, the system includes: a wireless reception element, for receiving power wirelessly through tissue of a subject; a power management and storage circuit, for storing a portion of the received power; and a control circuit for controlling the delivery of current from the power management and storage circuit to each of a plurality of stimulation electrodes individually, based on a modulation of the received power.

Abstract: ElectroCorticoGraphy (ECoG) sensors and uses are disclosed. These ECoG arrays, systems, and processes may be operable or configured to: i) simultaneously record neural signals while providing stimulation on specific portions of the cortex using a user-guided stimulator; ii) acquire neural signals over a large cortex area; iii) provide individual or group stimulation while concurrently receiving neural feedback; and/or iv) acquire neural signals at a setting remote from the neural source using wireless or other communication techniques.

Abstract: ElectroCorticoGraphy (ECoG) sensors and uses are disclosed. These ECoG arrays, systems, and processes may be operable or configured to: i) simultaneously record neural signals while providing stimulation on specific portions of the cortex using a user-guided stimulator; ii) acquire neural signals over a large cortex area; iii) provide individual or group stimulation while concurrently receiving neural feedback; and/or iv) acquire neural signals at a setting remote from the neural source using wireless or other communication techniques.

Abstract: Fully-passive sensor systems that receive an input electromagnetic signal and return an output electromagnetic signal are described. The sensor systems can be used to measure pressure in biological or non-biological systems.

Abstract: The present invention relates to an attention training method and system based on synergic control of breathing and force, combining the characteristics of focusing on proprioceptive breathing during meditation with the characteristics of focusing on muscle force control in the haptic channel, realizing visual detection of attention states during training through synchronization errors of breathing signals and force signals; the method comprises four subtasks, have progressively increasing training difficulty and can be used for training independently or consecutively in a progressive manner, also includes an training system for implementing the training method; the attention training is achieved through this continuous synergic control tasks of breathing and force, and the attentional state during the training is reflected by a synchronization error of the breathing signal and a muscle force output signal.

Abstract: Fully-passive sensor systems that receive an input electromagnetic signal and return an output electromagnetic signal are described. The sensor systems can be used to measure pressure in biological or non-biological systems.

Abstract: ElectroCorticoGraphy (ECoG) sensors and uses are disclosed. These ECoG arrays, systems, and processes may be operable or configured to: i) simultaneously record neural signals while providing stimulation on specific portions of the cortex using a user-guided stimulator; ii) acquire neural signals over a large cortex area; iii) provide individual or group stimulation while concurrently receiving neural feedback; and/or iv) acquire neural signals at a setting remote from the neural source using wireless or other communication techniques.

Abstract: Provided is a vertical take-off and landing fixed-wing aircraft and the flight control method thereof, the fixed-wing aircraft including a fuselage, fixed-wings and a thruster both configured on the fuselage. A storage room is configured inside the fuselage, a plurality of openings and their corresponding doors are configured on the fuselage and the openings are connected to the storage room. A driving mechanism, and a deployable supporting mechanism are arranged inside the storage room, and the outer ends of the deployable supporting mechanism are provided with vertical lifters. The fixed-wing aircraft can be in an open state and a closed state, in the open state, the doors open and the vertical lifters spread out outside the storage room through the doors; in the closed state, the vertical lifters are located within the storage room while the doors closed.