Abstract: Provided in the present invention are a biodegradable ureteral stent and a preparation method therefor. The biodegradable ureteral stent is of a hollow circular tubular structure (1), a fixing structure (2) for preventing sliding is disposed at two ends or one end, a tube wall is also provided with a plurality of penetrating drainage side holes (3), and a material used is a composite material formed by at least a glycolide-?-caprolactone copolymer, an ethylene oxide polymer, and a medical developer. In the glycolide-?-caprolactone copolymer, a weight percentage content of glycolide is 51-58%, such that the copolymer has appropriate mechanical strength and softness and hardness and gradually becomes soft with prolonging of the degradation time. Meanwhile, a certain proportion of the ethylene oxide polymer is added, such that the polymer has a lower constant stretch modulus after degradation and is softer and smoother.

Abstract: Systems and methods for automatic provisioning of topology for SONET networks are disclosed. The method for topology provisioning generally includes mapping the network topology based on network connection information, verifying that the network elements complete a ring formation, obtaining protection scheme information, and automatically provisioning time-division multiplexing group (TDMG) and/or facility fault protection (FFP) depending upon the protection mechanism.

Abstract: Systems and methods for automatic end-to-end paths for SONET networks are disclosed. The method for path provisioning generally includes obtaining path parameters for each network element, performing discovery of paths including determining connection possibilities based upon the path parameters, and provisioning an end-to-end STS-n path based on the paths resulting from the discovery.

Abstract: Systems and methods for automatic provisioning of equipment, topology, and end-to-end paths for SONET networks are disclosed. The method for equipment provisioning generally includes detecting a new equipment, selecting a default equipment template corresponding to the new equipment type, and provisioning the equipment using the predefined values of the default equipment template.