Process-cost analysis of productivity and wages in agro-industrial processing organizations

Process-cost analysis involves the implementation of appraisal procedures at each stage of adding value, which is considered as the main source of achieving the interests of personnel, owners and the state. The main goal of this study is to verify the existing methodological approaches to assessing the labor productivity of personnel in processing organizations of the agro-industrial complex, to assess the dynamic ratio of productivity and wages, based on methodologically justified assessment procedures that ensure the implementation of the advantages of process-cost analysis and eliminate the disadvantages of traditional methods. In order to improve the analytical suitability of the results of the process-cost analysis of labor results, three areas of key stakeholders’ interest are identified, for each of which corrective operations are provided that provide not only the possibility of a retrospective analysis, but also predicting the possibility of parity of interests. Based on the results obtained, it was concluded that the share of value added in total revenues is low, the level of wages is unreasonable and, consequently, significant disparities in the distribution of value added. The inconsistency of the criterial assessment of the dynamic ratio of labor productivity and its payment in modern conditions has been proved.

Effect of Particular Combinations of Quenching, Tempering and Carburization on Abrasive Wear of Low-Carbon Manganese Steels with Metastable Austenite

The effect of quenching from 900°C (20 min exposure) and different tempering in the 250-650°C (for 1 hour) interval, as well as additionally preliminary carburization for 8 hours at 930°C, followed by a similar heat treatment on abrasive and shock-abrasive wear of low-carbon manganese (10-24%Mn) steels, phase composition and mechanical properties was studied. It was confirmed that an increase in the manganese reduces the abrasive wear resistance and increases the impact-abrasive wear resistance. The expediency of carburization of low-carbon manganese steels is shown in order to obtain the residual austenite in the structure which amount and stability must be optimized in relation to specific abrasive impact characterized by the dynamic ratio with taking into account the chemical composition.

Relationships between Resonant Frequency and some Dynamic Properties of Marble and Brick Waste-Substituted Concrete

The present research determines the relationships between resonant frequency and some dynamic properties of concrete. Based on the research, new relationship equations are offered. The resonant frequency method is used to measure the resonant frequency of concrete samples from which a dynamic module of elasticity, a dynamic ratio of Poisson, and a dynamic module of shear are computed. Marble or brick waste substituted concrete in samples with water-cement ratios of 0.60 and 0.70 are cured in water and measured at 90 days.