Motion Planning of Planar Closed Chains Based on Structural Sets

This paper investigates the motion planning problem of planar m-link (m≥4) closed chains among point obstacles with extension to arbitrary convex 2-D obstacles.The configuration space (C-space) of closed chains is embedded into two copies of m-3 dimensional tori.Two structural sets, the C-boundaries and the C-obstacles, are analyzed based Ha

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Primary splenic angiosarcoma: case report and literature review

This paper describes a case of an aggressive primary splenic angiosarcoma in a 29-year-old man and makes a review of its clinicai findings, pathologic reports, treatment and prognosis.Angiosarcomas comprise less than 1% of soft tissue sarcomas, and only a small percentage of these tumors arise in the GREENERY spleen.These tumors usually represent a

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