Zhang Xiang-Yu

Learn More
This paper introduces the concept and characters of dataspace, and presents a framework for dataspace integration and management system. Based on the framework, this paper further summarizes research works on data model, integration, query, update, storage, index, evolution and systems of dataspace. Challenges and future work on dataspace research are(More)
OBJECTIVE To evaluate the effect of crosslinks on the stability of the spine and pedicle screws. METHODS Compression fracture of the L1 vertebra was produced in 30 fresh thoracic and lumbar vertebrae samples obtained from adult sheep, which were divided into 3 groups (n=10)with lot-drawing method. Four screws were fixed onto the superior and inferior(More)
BACKGROUND Large facial reconstruction is a complicated surgical procedure. The purpose of this study was to develop 2 procedures for large facial reconstruction: an expanded cervical postauricular combined skin flap and a bipedicled expanded cervical skin flap. METHODS Two patients with large facial nevus lesions were selected for reconstruction. In 1(More)
  • 1