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STUDY DESIGN A study of cervical interbody fusion using polyamino acid-based bioabsorbable fusion cages in a goat model. OBJECTIVE To compare interbody fusion of a bioabsorbable multiamino acid copolymer/α-tri-calcium phosphate (MAACP/α-TCP) fusion cage with an autologous tricortical iliac-crest bone graft and a titanium cage. SUMMARY OF BACKGROUND DATA(More)
To investigate the effectiveness of valgus osteotomy combined with intramedullary nail in treatment of Shepherd’s crook deformity of fibrous dysplasia. A retrospective study was performed in 13 patients (14 femora) of fibrous dysplasia who were treated in our hospital between August 2000 and February 2005. All patients had Shepherd’s crook deformity. Six(More)
BACKGROUND AND OBJECTIVES To investigate the feasibilities of reducing intraoperative hemorrhage and improving the safety of pelvic and sacrum tumor surgery using sizing balloon occluding abdominal aorta. METHOD From May 2001 to May 2007, 18 patients were diagnosed as sacrum or pelvic tumor and underwent surgery in our institution. Balloon catheters were(More)
Snake models are extensively used from its debut in image processing and motion tracking, but its poor convergence on concave boundary is a handicap for object location. Although, the GVF snake model shows high performance for this problem, but it suffers from costly computation by virtual of PDE's and another so-called critical point problem for the(More)
  • Duan Hong
  • 2008 International Symposium on Computer Science…
  • 2008
The paper presents a method to reconstruct a controllable 3D head and face model for a specific person. The 3D grid-muscle head and face model of the certain person is created after selecting key feature points from a front face photo and a left side face photo of the person, deforming the grid points and muscle vectors of a basic model. Then after texture(More)
This paper analyzes the relationship of symbol synchronization error and carrier phase in OFDM system. According to this, a joint estimation algorithm is proposed. A matrix is reconstructed, and a linear fitting is completed by QR matrix decomposition. The symbol timing and carrier phase is got by this joint estimation. The simulation results show that in a(More)
In this paper, we analyze the motivation of the cooperative R&D between private S&T enterprises and state military companies from the angle of informal innovation network. The military industry is a natural monopoly industry which regulated by government. As a result, the informal innovation is a valuable way for private S&T(More)
Presents a method to quantify the facial expression. This method is based on the human facial part in MPEG4 protocol and facial muscle model, through the normalization of the facial muscle parameters, achieves a quantitative description of facial expression. It gives a concise way to make facial animations and to establish a bank of facial animation(More)
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