Justification of management decisions on the modernization of Volga-type dry cargo ships based on an express analysis of the market situation

The market situation, as in the global. so on a local scale, it is quite changeable and reacts sensitively to the state of the political situation, socio-economic indicators of the country, changes in legislation, etc. Depending on the changing market situation, the company also needs to reorient the scope of its activities, depending on the requirements of the market, in order to be able to provide services or goods in demand in the new market conditions with the greatest efficiency. The presence of several directions of the company's development leads to some tension in making a management decision. This requires research and analysis of the current market situation. The article discusses the rapid analysis of the market situation in order to make a management decision in relation to an asset: a cargo ship. A methodology for conducting express analysis based on information published in open sources has been obtained

ACOUSTIC EXPRESS ANALYSIS OF QUALITATIVE AND QUANTITATIVE COMPOSITION OF SOILS DURING CONSTRUCTION WORKS

An express analysis of the ecological state of the soil during construction works is proposed. The algorithm is considered, which is the first approximation for describing the quality of the soil mixture, serving to build a system of operational recognition of the component composition of the soil mixture and the percentage of its main components. It is based on the analysis of the forced acoustic emission signal in the frequency domain to obtain the Fourier spectrum. From the general spectrum of the signal, consisting of a set of basic and higher (timbre) harmonics, subspectrs of significant basic harmonics corresponding to certain elements of the soil mixture are distinguished. To isolate the sub-spectra, a sequence of modal harmonics is used. The composition of the set of modal harmonics determines the qualitative composition of the soil in the first approximation.

IDENTIFICATION ANTIGENS OF DIFFERENT NATURE USING IMMUNOBIOSENORS ON A SINGLE PLATFORM BASED ON SURFACE PLASMON RESONANCE

Biosensors based on surface plasmon resonance are unique devices that allow the detection of antigens of various nature: antigens of plant viruses, antigens of animal viruses, polyamine tumor markers. The problems and prospects of using immunosensors for express analysis on a single platform are discussed.

Development of Models for Express Analysis of Road Safety

Results of a study of an actual scientific and technical problem of determining the road safety level on road sections are presented in the paper. The aim of the study is to develop an express method for assessing road safety based on improving the method of the final accident rate by reducing the partial accident rate with the required accuracy of determining the safety level on public roads. The formalization of the relationship between the parameters of road traffic conditions has been carried out to study the level of safety on highways. Latent factors of the parameters of traffic conditions have been obtained on the basis of reduction of their aggregate by the method of principal components, taking into account the relationship of partial accident rates. This condition has allowed to develop analytical models for determining road safety for implementation in the practice of conducting a road safety audit. A method for identifying hazardous areas on highways has been proposed in the paper. It includes 11 parameters of road conditions out of 18 partial accident rates proposed in the prototype and regulatory documents of Ukraine. The adequacy of the model is determined by deviation values of the obtained data according to the prototype model from the values of the relative accident rate, which were 3.22 and 18.61, respectively. The proposed model reduces the deviation value by six times and affects the accuracy of determining the safety level. Experimental studies have been conducted on 79 km of highways (on 385 sectors with constant values of traffic conditions parameters). The results of a comparative analysis of the safety level for the prototype model and the developed model have been identical and shown a decrease in time and labor costs by 1.6 times without loss of accuracy. Thus, the developed methodology is recommended to be applied for determining the potential danger of road sections during an express analysis of the road safety or when conducting a safety audit at various stages of the road life cycle.

EXPRESS ANALYSIS OF TRIETHOXYSILANE AND TETRAETHOXYSILANE USING THE RAMAN SPECTROSCOPY METHOD FOR OPTIMIZATION OF THE TECHNOLOGICAL PROCESS OF MONOSILANE SYNTHESIS

A technique for the express analysis of the products of technological processes is described, which was developed using the Raman spectroscopy method. The analysis of the Raman spectra includes the interpretation of the spectral bands, taking into account the values of the characteristic frequencies of the vibrational spectra of organic compounds, as well as the determination of the integral intensities of the corresponding spectral ranges. By example of the real time control procedure for the technological process of monosilane synthesis, the express analysis of tetraethoxysilane, which is a by-product of this technological process, is carried out. Significant advantages of using the express analysis method are demonstrated, which provide control over the normal course of the technological process and obtaining results that allow making adjustments to the process flow diagram in order to optimize it.

Concentration of stresses near the hole in contact with rigid cylinder in composite plate, taking into account lateral clearances

Problems. When designing bolted joints (BJ), it is necessary, in particular, to carry out their verification calculations for strength. At the same time, it is desirable to use express analysis: calculations by simple formulas of sufficient accuracy. For BJ of plates made of layered polymer composite materials (PCM), the problem has not yet been solved. The aim of the study. The task is to test the accuracy of three known formulas for quick calculation of the value of the stress concentration factor (SCF) in zone of contact of bolt-hole with a rigid cylinder (bolt). The study was carried out on contrasting examples of materials and schemes of reinforcement of plates made of PСM, taking into account possible clearance between bolt and hole in the real range: from zero to 1% of diameter. Methodology of implementation. Numerical calculations were made using the finite element method (contact problem) for the BJ of plates made of layered PCM. 3D orthotropy of each monolayer was provided. Three simple formulas of express analysis were tested. The results are summarized in the tables and many illustrations are given. Research results. Numerical estimates of depending of the SCF in zone of the surface of the bolt-hole from considered factors are obtained. The factors are the material characteristics, the schemes of reinforcement of plates made of layered PСM and the values of the clearance between bolt and hole in the plates, as well as the accuracy of the considered formulas. Conclusions. Changing the material and the scheme of reinforcement of plate made of layered PСM leads to a significant change in the values ​​of maximum stresses and SCF in zone of the bolt-loaded hole in the weakened by hole cross section of a plate. Considered formulas of the express analysis have insufficient accuracy for consideration of contrast properties of materials and schemes of reinforcement of a plate. Changing size of clearance between bolt and hole in the range from zero to 1% of the diameter leads to relatively small changes in SCF: up to 10% maximum. Additional research is needed.

SCIENTIFIC AND METHODOLOGICAL SUPPORT OF FINANCIAL EXPRESS ANALYSIS OF SMALL INDUSTRIAL ENTERPRISES OF UKRAINE

The subject of research of this work is the current direction in the financial activities of small industrial enterprises – financial express analysis. The purpose of the study is to develop a scientific and methodological basis for a simplified procedure of financial supervision of small industrial enterprises in the country in order to provide qualified assistance to managers of small industrial enterprises in the financial sphere of their activities. The article solves the following tasks: study of the state of small industrial enterprises and their role in the development of Ukraine's economy, definition of "financial supervision", development of algorithm for financial express analysis of small industrial enterprises, choice of directions for financial express analysis of small industrial enterprises financial supervision, the formation of a bank of input data on four components, testing of scientific and methodological support on the example of a particular enterprise. The following methods are used: theoretical generalization, retrospective analysis, comparative analysis, analytical, analysis and synthesis, rapid analysis. The following results were obtained: the method of financial express analysis of a small industrial enterprise was proposed on the basis of financial supervision; selected areas of financial analysis under a simplified procedure; the scheme of algorithm of carrying out procedure of financial supervision is developed; the bank of the input data which are necessary for the decision of the set task is formed; substantiation of the choice of applied mathematical models is carried out; the experimental approbation of the offered scientific and methodical approach to carrying out the financial express-analysis on the factual basis of the real small industrial enterprise is carried out; appropriate recommendations were given to the management of the researched enterprise. Conclusions: It is determined that in the current unstable economic conditions, small industrial enterprises need professional assistance of consulting orientation in financial activities. Obtaining up-to-date relevant information on the financial condition of small industrial enterprises is a very important task that requires a rapid financial analysis of their activities. The study of this issue showed the lack of consensus of analysts on the directions and methods of financial rapid analysis. This led to the need and feasibility of developing for the management of small industrial enterprises under a simplified procedure of an orderly methodology of financial rapid analysis on the basis of financial supervision.

Methodology of online assessment of technical state of transformer substation 35/6 (10) kV by express analysis coefficient

THE PURPOSE. The purpose of this study is to develop a methodology for determining the coefficient of express analysis of the main equipment of a 35/6 (10) kV transformer substation (TS) to assess its technical condition. A three-level structural complex has been developed for measuring and express-analysis of the technical state of TP. The technical condition of the main equipment of the TP is analyzed according to the selected diagnostic parameters.METHODS. The TP monitoring system makes it possible to assess the performance of its elements online. Express analysis provides remote monitoring, monitoring of the condition of the operating equipment and forecasting changes in the technical condition.RESULTS. The proposed method for determining the coefficient of express analysis allows online monitoring of changes in monitored parameters, reducing the recovery time of failed elements, and maintaining equipment in a working condition. CONCLUSION. The proposed solutions make it possible to move to the organization of maintenance and repair of the main power and electrical equipment of the transformer substation according to the actual state, as well as to improve the reliability and quality of the transmission of electrical energy to consumers.

On the Use of Indentation for Studying Rock Properties

It was developed the method for determining the strength of material without breaking the test sample. The essence of the method is to determine the strength characteristics of the rock by pressing into the variable cross-section indenter. The practical significance lies in the possibility of performing an express analysis of the strength of rocks on small-sized samples - 3 mm or more, for example, using the particles of landslide cuttings from unstable intervals when drilling wells; there is no need for the preparation of reference material; the simplicity and availability of the equipment used and high accuracy of the results obtained is also important. The developed method has no analogues and is patented in the patent offices of the Republic of Belarus and the Russian Federation.

INFLUENCE OF MACROSTRUCTURE ON THE DENSITY OF OAK WOOD

An individual process of staining of each trunk occurs as a result of the long-term presence of wood in the river soil without oxygen access. It consists in changing the structure and chemical composition of the wood. There are industrial reserves of this wood on the territory of the Russian Federation, in the floodplains of a number of rivers. One of the most important tasks at the extraction stage is the primary individual quality assessment of the trunk. One of the most effective diagnostic indicators for assessing wood quality can be the number of annual layers in one centimeter. This indicator correlates well with wood density. The purpose of the research is to establish the influence of the macrostructure of natural wood and stained oak wood, changes in the microstructure on its density. It was found that the density of stained oak wood, depending on the number of annual layers in 1 cm, is about 10% higher than that of natural wood, all other things being equal. The magnitude and nature of the decrease in density along the radius of the trunk is the same as in natural wood. It is about 20%. The performed studies will allow making an express analysis of the quality of each stained wood trunk at the stage of making a decision on the behavior of its extraction. This will significantly reduce the cost of logging and primary processing of stained oak wood