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In general trade expansion has a real effect in improving the employment opportunities open to women , in terms of provision of wage employment in the formal sector and in terms of expansion of income-earning opportunities of all kinds relative to unpaid work . Ochoa , who has flown missions and who holds several patents , will give a presentation to the girls that helps them understand some of the opportunities open to women skilled in science and mathematics . At first , 30 military trades were open to women , a figure which eventually reached 55 . Consisting of three one - week , off - site segments coupled with a project of the candidate ’ s choice , this course is open to women at the level of Associate Professor and higher on a competitive basis .