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THE JOURNAL OF ECONOMIC SCIENCES: THEORY AND  PRACTICE, V.71,  # 1, 2014,  pp. 26-39



               fundamental development measures and issues that we are restrict ourselves to follow in order to


               deriving the key sectors in the Jordanian economy.

                     The import leakages from the economy to outside world are also examined and measured

               and hence potential for import substitution assessed.


                     2.  The Backward and Forward Linkages

                     The backward linkage, b j , is define, in an input-output context, as:

                                               b j    =  ∑ r ij                         ……. (1)


                                                          i

                                                                                     -1
                     Where, r ij , is the elements (cells) of Leontief Inverse matrix  (I-A)  . Thus b j is the total

               change in the  gross output  of the  economy brought about by  one unit change in  demand for

               sector/ industry j output.

                     The forward linkage, c i , is defined as:


                                               c i    =    ∑ r ij                       …….. (2)

                                                            j

                     This shows  the  output  generated  in sector i  when final demand in each sector of the


               economy is increased by one unit.

                     Having derived the above, an index is constructed to measure the relative strengths of each

               of the linkages; by dividing each of b j  and  c i  by their respective average backward and forward


               linkages for the Jordanian economy as a whole, that is:

                                                          ∑ r ij              ∑ ∑  r ij


                                                            i                  i   j

                                               v j   = ------     /   ---------------              ………..(3)

                                                          2
                                                          n                      n



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