1.55um Wavelength Operation of E(3+,r)-Doped Optical Fiber - download pdf or read online

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By Song Q., Zhang Y.

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Extra info for 1.55um Wavelength Operation of E(3+,r)-Doped Optical Fiber Bistability

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The decomposition algorithm returns the AND/OR graph representation of the assembly process. The correctness of the algorithm is based on the assumption that it is always possible to decide correctly whether or not two subassemblies can be joined, based on geometrical and physical criteria. Based on this approach, different computer aided assembly planning systems have been implemented, including LEGA, GRASP, XAP, BRAEN, COPLANNER, and DFA. More exact descriptions are given in (Homem De Mello and Lee, 1991).

The length of the shortest line segment joining the two objects. 3. The geometric model of the robotic workcell Example_Cell. , 1988). Many algorithms have been specifically designed to achieve bounds on the form of the asymptotic time. For twodimensional problems, Schwartz (1981) gives an O(log2 M) algorithm, and more recently, O(log M) has been used (Schwartz, 1981) (M is the number of vertexes). The three-dimensional problem has been considered (Red, 1983) with a time of O(M log M). Because of their complexity and special emphasis on asymptotic performance, it is not clear that the algorithms are efficient for practical problems.

This subaction is realized by a robot servicing the workstation d(i). The elementary robot actions can be expressed as basic macro-instructions. , the PICK-AND-PLACE instruction (Jacak and Rozenblit, 1992b). In this set of instructions, the action Transfer(oi–1, oi) is interpreted as the PICK-AND-PLACE part FROM x TO y macro, where x denotes the geometrical data of a workstation’s buffer (store), and y is the position and orientation 54 Chapter 4 of the buffer of the next workstation. 6: [ PICK-AND-PLACE part FROM x TO y :=] MOVE EMPTY TO x+v (x=position of buffer of machine d and v is approach vector) PICKUP AT x := [begin PICKUP] CENTER GRIPPER (grasp orientation of effector) OPEN GRIPPER MOVE EMPTY FROM x+v TO x WITH APPROACH = v CLOSE GRIPPER WAIT FOR contact signal with part MOVE HOLDING FROM x TO x+v WITH DEPARTURE = v [end PICKUP] MOVE HOLDING FROM x+v TO y+v (y=position of the next machine buffer) PLACE ON y [end PICK-AND-PLACE] The above sequence of instructions is used to synthesize automatically the robot’s motion program.

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1.55um Wavelength Operation of E(3+,r)-Doped Optical Fiber Bistability by Song Q., Zhang Y.


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