Abstract: A method for allocating network resources, including: obtaining a current network performance parameter and preset service SLA; selecting service levels corresponding to the current network performance parameter from a preset resource usage strategy according to the current network performance parameter, and selecting service levels which are equal to or higher than the service levels defined in the service SLA from selected service levels; sending the selected service levels to a user terminal; allocating network resources for a user service according to the service level selected by the user terminal. A system and a device for dynamically allocating network resources to the user terminal according to the condition of the network resources, so as to improve the utilization rate of the network resources.

Abstract: This invention discloses to a type of fiber gas lasers and fiber ring laser gyroscopes based on these fiber gas lasers. The fiber gas lasers comprise of excitation gases, optical resonator and excitation source, etc. The optical resonator is made by connecting two selected arms of a single mode fiber coupler to the two ends of hollow-core fiber to form a ring resonator. The hollow-core of the fiber is filled with excitation gases to act as gain medium. The fiber laser is simple to construct, lower cost, and has adjustable size and good amplification performance. The fiber ring laser gyroscopes based on this novel type of gas lasers can be applied on robotics, automobile navigation, etc.

Abstract: In the context of a machine-vision system for inspecting a part, a method and apparatus to provide high-speed 3D (three-dimensional) inspection of manufactured parts. Parts are inspected to obtain dimensional and geometric information regarding such characteristics as sag or bow of subportions of the item, the angle of pitch, yaw, and or roll of one portion relative to another, heights of various formations on the part. In some embodiments, an array of height pixels is calculated, and regions of interest (ROIs) are located within the array, and the ROIs are used to determine characteristic geometries of the parts being measured. One measurement system includes a light source, an imager, and a computer. Light source provides projected patterned light on the object useful to obtain 3D geometric information about the object. The imager has a reception optical axis that intersects the object when the machine-vision system is in operation.