The development of tax investigation to increase the tax dimension of commercial and industrial profit tax Matrix of technical coefficients as a tool to stream line application of the conceptual frame work of accounting Wasted energy costs as a way to realize the exploitation of energy productivity analysis The Impact of tax exemption on investment rates The use of data feasibility study in the control of the performance of companies with international activities in their host countries – an empirical study تكاليف الطاقة الصناعية كاسلوب لترشيد استغلال الطاقة الانتاجية نحو اصلاح المشكلات المحاسبية لشركات التامين واعادة التامين دراسة مقارنة