Some 3D systems allow the properties and internal structure of the material being printed to be varied.

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He said that today, domestic buyers in the U.S. are able to place higher bids in competitive tenders for properties because their future internal rates of return, or IRR, aren't affected by the added tax on future capital gains.

WSJ: Tax Plan May Provide Real-Estate Boost

An internal audit revealed that as many as 157 properties received improper reductions.

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Much like Manhattan apartment brokers who resist putting their best properties on a central listing service, PE firms use performance measurements like multiple of investment or internal rate of return that make it virtually impossible to compare one fund against another unless they started the same time and have had similar cash inflows and outflows.

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