"To me, many of these projects are a result of easy access to capital and a combination of wishful thinking and speculative behavior rather than rational business calculations, " said Victor Teo, assistant professor at the University of Hong Kong.

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The Business Insider calculations are that oil and gas provides 51% of the top 500's total profits and 14% of turnover.

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It will do all the work of a business, its scientific calculations, its routine office accounting, and its occasional costing analyses as each comes round, and it will take in its stride all the awkward exceptions that crop up in every batch of routine calculations.

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Like other states, Florida's medical malpractice reform has changed the ultimate risk calculations for many business defendants by increasing the likelihood that higher courts will reverse disproportionately large jury awards and other seemingly wacky court decisions on appeal.

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Such calculations and contributions by private business could become a major part of future rail developments, if all the lessons of the rail renaissance are to be put into effect elsewhere.

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Manhattan's U.S. attorney says Chilowitz, a former employee in Morgan Stanley's information technology department, stole a list of Morgan Stanley's hedge fund clients and the calculations of rates each paid for prime brokerage services, a booming business for investment banks that includes securities lending and financing.

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According to my calculations on data from the Bureau of Labor Statistics and the Federal Reserve, employment in business management and finance during the past 20 years correlated negatively at a moderate magnitude with changes in the interbank interest rate.

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