Vol 14, No 3 (2024)

There is a shortage of workers involved in train and shunting work, especially in freight transportation in the railway industry. Occupational diseases, Unsatisfactory working and rest regime in some depots are the reasons for leaving the profession of "train driver" and "assistant of train driver".

Purpose. The paper discusses the potential optimization of the current system for assigning turnouts to freight train crews. This optimization could improve the planning of labor resource availability with a longer-term perspective. It is necessary to study the existing functionality of the software that informs employees of locomotive crews which involved in freight traffic in advance and propose potential solutions to increase the depth of forecasting and the quality of the formation of the call sequence.

Methodology. In this paper methods of analysis, synthesis, induction and deduction were used.

Results. The authors propose improving the quality of forecasting for the formation and dispatch of trains and locomotives at freight train-forming stations, in conjunction with the competence of various locomotive crews for assigning operations, in order to enhance working conditions.

Practical implications. This study may be of practical interest to the traction directorates, traffic management and the technical department of JSC Russian Railways, as well as organizations representing the interests of locomotive workers in terms of improving working conditions (locomotive trade unions, Rosprofzhel). Certain aspects of the article could be used as supplementary settings for existing software products which assist in selecting employees for locomotive teams and assigning them to specific locomotives and trains.

In the course of the study, aspects of the power supply of information systems are considered in the case of uncertainty described by interval-type data, and the main types of errors that arise during their operation are studied.

The aim of the study is to find effective approaches to ensuring reliable operation of information systems subject to the presence of uncertainty in the values ​​of parameters specified by interval data.     

      Materials and methods. This article presents an approach to solving the problem of control the reliability of a complex information system in the presence of an uncertainty factor in the values ​​of parameters that can be described using interval type data and the corresponding mathematical methods for working with them       

      The scientific novelty of the described approach lies in the ability to most accurately take into account the error factor that occurs when an information system operates under conditions of uncertainty and determine the optimal options for correcting the values ​​of its parameters, without allowing their changes to go beyond the permissible intervals.

      Conclusion. The approach proposed in the article is supposed to be used when solving the problem of ensuring reliable operation of an information system in the presence of uncertainty, which can be described using the apparatus of interval data. The developed method makes it possible to find the optimal control effect on the system parameters at a given time, at which the probability of failures will be minimized.

Continuous integration and continuous deployment (CI/CD) processes have become essential elements of modern software development, enabling automation and optimization of work processes. However, these processes come with risks associated with vulnerabilities in the dependency chain, which can lead to serious consequences such as unauthorized access and data leakage. The article discusses the need to implement reliable mechanisms for detecting and mitigating dependency risks to improve the reliability of CI/CD.

The main risk in CI/CD processes is the exploitation of malicious dependencies used during the software build and deployment process. The main types of attacks include dependency confusion, dependency hijacking, and typo cybersquatting. To prevent these threats, various protection methods are proposed, such as controlling access to private packages, using automated tools for monitoring and checking dependencies, and implementing machine learning systems to detect suspicious packages. These measures are aimed at ensuring the integrity and security of software products, minimizing the risks associated with dependencies in CI/CD.

Purpose. Analyze dependency chain attacks and identify effective risk management methods to ensure high security of continuous integration and deployment processes to improve software development practices by identifying and eliminating potential vulnerabilities and stability issues, which provides safer and more reliable software delivery pipelines, reducing the likelihood of failures and disruptions in production environments.

Methodology.  This work includes the results of both international and local scientific research. To identify the relationships and obtain original conclusions, the author uses theoretical research methods, paying special attention to the search and analysis of information. The authors apply theoretical research methods related to the search and analysis of information to identify connections and obtain unique conclusions.

Results. The analysis of the risks of malicious dependencies in the process of continuous integration and implementation of the program code is carried out. Methods have been identified to minimize the risks of dependency abuse, the need to implement multi-level security measures, including automated monitoring and analysis tools, strict access control to repositories and the use of cryptographic methods to verify the integrity of packages. In addition, regular audits and employee training help maintain a high level of security and awareness of potential threats.

Practical implications It is advisable to apply the results obtained in the field of DevOps development in order to optimize the application development and release process by eliminating a known bottleneck: minimizing the risks of malicious dependencies in the process of continuous integration.

The presented research paper with a scientific bias is devoted to the analysis of the application of the system of code-location positioning of rolling stock on the stretch of the Eastern direction of the West Siberian Railway. The article describes the subject and object of research, includes the sequence of individual stages of research with justification and data processing.  The publication is conditionally divided into 2 parts, the first is devoted to the methodology of research, the description of the research process, input data and a structural description of individual elements of the interval control system. The mathematical apparatus includes statistical methods for processing data adjusted for the current conditions of the experiment. The determination of throughput and processing capacity was carried out using a foreign method and the author's methodology for evaluating the efficiency of the distillation. The conclusion of the first section of the article indicates the need to use the presented mathematical apparatus. The second part of this publication contains the results of research with conclusions.   The uniqueness of the experiment consists in dividing the research part into several separate stages and conducting them for several months on the current stretch of the main line. The first stage of research is devoted to the accuracy of determining the location of rolling stock using a code-location positioning system. The second stage contains an assessment of changes in throughput and carrying capacity on a separate loaded stretch of the Eastern direction of the West Siberian Railway. The final stage of the experiment contains an assessment of the study of the response rate of the proposed motion control system. The results of the research and the summary of the entire work are located in the final part of the publication, which includes analysis and analysis of the experiment. The final section describes recommendations for improving operating conditions using the data obtained and the author's assessment of the effectiveness of the rolling stock code-location positioning system on a separate stretch of the main line section of the Eastern direction of the West Siberian Railway.