The Methodological Issues of the Quality Costs Control: Objectives, Stages, Control Procedures

The article is aimed at developing the system of internal cost control of enterprise, taking into account the information needs of the quality management system. The essence and objectives of internal control over the quality costs have been substantiated on the basis of the analysis of Ukrainian and foreign scientific research. Quality cost control being one of the efficient instruments of quality management, however, has not been given adequate attention due to the complexity of their differentiation from the total costs amount and lack of methodological base taking account of specifics of this control area. The features of internal control of various classification groups of quality costs and the key elements of its methodology have been covered: objectives, stages, information base, control methods, control procedures. The directions of improvement of the methodology of quality costs internal control have been suggested in order to enhance the effectiveness of managerial activities within quality management system

New Mixed Y0.5R0.5VO4 and RVO4:Bi Materials: Synthesis, Crystal Structure and Some Luminescence Properties

The results are reported on a precise crystal structure and microstructure determination of new mixed YVO4-based orthovanadates of Y0.5R0.5VO4 (R = Sm, Tb, Dy, Ho, Tm, Yb, Lu) as well as some Bi3+-doped RVO4 (R = La, Gd, Y, Lu) nano- (submicro-) materials. The formation of continuous solid solutions in the YVO4–RVO4 pseudo-binary systems (R = Sm, Tb, Dy, Ho, Tm, Yb, Lu) has been proved. The lattice constants and unit cell volumes of the new mixed orthovanadates were analyzed as a function of R3+ cation radius. The impact of crystal structure parameters on the energy band gap of the materials was studied by means of photoluminescence studies of the Bi3+-doped compounds