Ian Ashdown has been named senior research scientist at TIR Systems Ltd., a developer of enabling technologies for solid-state lighting. . . . Mellanox Technologies Ltd., supplier of InfiniBand semiconductors, has appointed Yuval Leader as the vice president of systems solutions. . . . 3D Systems Corp. has named Grant R. Flaharty executive vice president of global business operations and E. James Selzer senior vice president.
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