Abstract: The present application provides a compound of general formula (I), capable of being used for an organic electroluminescent device as a guest material of a light-emitting layer. The compound contains a structure in which a natural heterocyclic ring coordinates with iridium (Ir), and a light-emitting wavelength of the compound can be effectively regulated. Using the compound as the guest material of the light-emitting layer facilitates the improvement of luminous efficiency and light stability of the organic electroluminescent device. In addition, the compound provided by the present application has a small molecular weight, is applied to a light-emitting layer, has a low evaporation temperature, and facilitates processing. The present application also provides a guest material of a light-emitting layer containing the compound of general formula (I), an organic electroluminescent device, and a display device.

Abstract: A passive energy-storage exoskeleton for assisting elbow joint is provided, which includes an upper arm unit, a lower arm unit, and an elbow joint unit located therebetween, the upper arm unit is rotatably connected with the lower arm unit. The elbow joint unit includes an anti-gravity mechanism, a coil spring mechanism, and a lower-arm-unit self-locking mechanism. The anti-gravity mechanism generates an equilibrant moment to eliminate the influence of the weight of the arm of the user and the weight of the device on the elbow joint. The lower-arm-unit self-locking mechanism is configured for locking/releasing the lower arm unit at any specified angle of rotation. The coil spring mechanism is configured for capturing and storing kinetic energy generated by rotation and swing of the arm of the user and releasing the energy as required.

Abstract: A passive energy-storage exoskeleton for assisting elbow joint is provided, which includes an upper arm unit, a lower arm unit, and an elbow joint unit located therebetween, the upper arm unit is rotatably connected with the lower arm unit. The elbow joint unit includes an anti-gravity mechanism, a coil spring mechanism, and a lower-arm-unit self-locking mechanism. The anti-gravity mechanism generates an equilibrant moment to eliminate the influence of the weight of the arm of the user and the weight of the device on the elbow joint. The lower-arm-unit self-locking mechanism is configured for locking/releasing the lower arm unit at any specified angle of rotation. The coil spring mechanism is configured for capturing and storing kinetic energy generated by rotation and swing of the arm of the user and releasing the energy as required.

Abstract: A method and system for discovering resources connected to a distributed network having a plurality of subnets is provided. Resource discovery over a distributed network is facilitated by active simple discover agents (ASDAs), that are selected from candidate simple discovery agents (SDAs) on the subnets. The ASDA discovers ASDAs on neighboring subnets. After determining neighboring ASDAs, an ASDA issues discovery search requests to the neighboring ASDAs. The neighboring ASDAs forward such requests onto their neighboring ASDAs to propagate a device discovery search request throughout a network comprising multiple subnets.

Abstract: A client-forced authentication mechanism for network communication enables a client to choose to force the establishment of an authenticated connection with a server that supports both authenticated and non-authenticated connections, while allowing the client to communicate with older servers that do not support client-forced authentication.

Abstract: A client-forced authentication mechanism for network communication enables a client to choose to force the establishment of an authenticated connection with a server that supports both authenticated and non-authenticated connections, while allowing the client to communicate with older servers that do not support client-forced authentication.

Abstract: A client-forced authentication mechanism for network communication enables a client to choose to “force” the establishment of an authenticated connection with a server that supports both authenticated and non-authenticated connections, while allowing the client to communicate with older servers that do not support client-forced authentication. To establish an authenticated connection with a server, the client includes authentication request data in a communication packet to the server. The authentication request data are designed such that a server supporting forced authentication would recognize them and give a predefined response, while an older server that does not recognize such data would respond with a well-defined error message according to the underlying network communication protocols. The exact format, location, and contents of the authentication request data depend on the underlying communication protocols and may be implemented in various ways.

Abstract: A method and system for discovering resources connected to a distributed network having a plurality of subnets is provided. Resource discovery over a distributed network is facilitated by active simple discover agents (ASDAs), that are selected from candidate simple discovery agents (SDAs) on the subnets. The ASDA discovers ASDAs on neighboring subnets. After determining neighboring ASDAs, an ASDA issues discovery search requests to the neighboring ASDAs. The neighboring ASDAs forward such requests onto their neighboring ASDAs to propagate a device discovery search request throughout a network comprising multiple subnets.