The project is a separate one from Jean-Pierre Houdin's construction analysis, but has also been developed with help of Dassault Systemes - and in collaboration with an international team of researchers.

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But any serious analysis for portfolio construction must look at long-term averages.

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The building owners said a wind tunnel analysis was done before construction.

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Chart Analysis : The weekly chart of the Dow Jones Home Construction group shows that the downtrend going back to the early-2010 highs (line a) was decisively overcome last week.

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And many privately held companies in construction-related industries are facing payment delays compared with last year, according to a financial statement analysis by Sageworks.

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However, construction companies seem to have been cutting staff and delaying hiring in recent months, according to a recent analysis of federal data by the Associated General Contractors of America.

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