text: date of receiving the material stimulation tor the well-done work may be postponed In this case for so long that the effect of this factor, as a stimulant for accelerating sctentlfle-technlcal progress, may decrease drastically. In order to etl•lnete such situation the self-supporting system envisages that, If the ter• of development end Introduction of new machinery Is longer then two years. then the development engineers may be given en advance payment, constituting up to 30S of the deductions to the fund of stimulation,· calculated from· the guaranteed economic effect. <The guaranteed economic effect Is the anticipated econo•lc effect that has been agreed upon by the development engineer and the customer of the results of the development, calculated on the basis of the specific effectiveness of the new m•ctt'aery, guaranteed by the development engineer, and the guarantQe1 scope of Its Introduction, guaranteed by the customer). If the guaranteed effect Is attained after Introduction, then the final sum of deductions to the funds of stlmulatlo~ Is reduced by the amount of the earl ler advance payment, but If It Is not attained and the final sum of deductions Is less than the advance payment, then respective means ought to be returned to the SFOST of the customer of the development, as It Is given In Flg.1. This threat Is evidently the reason why advance payments even for development with a long cycle are accepted with reluc­ tance and their part In the total sum of the funds Is negligible. Up to 201 (usaually 151) of the means obtained from the stated sources are directed to the central lzed premium fund of the ministry, and the rest Is divided between the fund of material Incentive and the fund of socio-cultural measures and residential construction In the relationship 60:40. 
analysis: The text appears to be discussing a system for incentivizing scientific and technological progress, specifically in the context of development and introduction of new machinery. The language used is technical and focused on economic effects, suggesting a category related to economic development or industry. However, the text also mentions social and cultural measures, which may suggest a broader category.