March 21, 2018 

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PPC: The abbreviation for production possibilities curve, which is a curve that illustrates the production possibilities for the economy. A production possibilities curve represents the boundary or frontier of the economy's production capabilities. That's why it's also frequently termed a production possibilities frontier (or PPF). As a frontier, it is the maximum production possible given existing (fixed) resources and technology. Producing on the curve means resources are fully employed, while producing inside the curve means resources are unemployed. The law of increasing opportunity cost is what gives the curve its distinctive convex shape.

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KEIRETSU: A form of business structure common in Japan which involves an alliance of several businesses, each working toward the mutual success of the group. The alliance also has close ties to government. Each "independent" business owns stock in the others and shares executives and directors. Keiretsu can be either horizontally or vertically integrated. Horizontal keiretsu cluster around a major bank with business ventures in a wide variety of industries. Vertical keiretsu contain businesses in all production phases of a particular industry, from raw materials to production to marketing.

     See also | business | firm | corporation | industry | chaebol | collusion | cartel | interlocking directorate | oligopoly | corporate stock |

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The time lag that it takes government leaders and policy makers to determine the appropriate government action needed to address an economic problem. The decision lag arises because it takes time for policy makers to chose among the array of possible policy actions, each with assorted consequences that appeal differently to different political constituencies. This "inside lag" is one of four policy lags associated with monetary and fiscal policy. The other two "inside lags" are recognition lag and implementation lag, and one "outside lag" is implementation lag. All four policy lags can reduce the effectiveness of business-cycle stabilization policies and can even destabilize the economy.

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