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Annotation: This report proposes a classification scheme of basic boxing techniques (stance, movement, attack, defense, and counterattack) with specific reference to the adaptation of these techniques for highly skilled boxers. Classifications of fighting techniques that existed and the characteristics of technical and tactical training of athletes at all skill levels are examined. It is shown that the technique is key to the successes of a boxer as a fighter: as with both strikes and defenses the ability to put off a punch is heavily conditioned by the mastery of the movement and accuracy of technique. A review of scientific and methodological literature, an exploration of the skills of well-regarded coaches were part of the research methodology, as were comparisons of technical movements in athletes with different skill levels. The findings of the review illustrate that as boxers grow more proficient they adjust their technique further (i.e. increase economy of movement as well as stylistic diversity at individual level). This article recommends and offers guidelines to develop technique with respect to boxers and future research avenues in the domain of technical and tactical training.

Annotation: The article discusses the design of microgrids that use renewable energy sources and energy storage systems as a controlled local power system that operates in both grid-connected and island mode. The goal is to present an integrated approach that combines the choice of architectural design (AC/DC/hybrid), the selection of distributed energy resources (DER) and energy storage systems (ESS), and management requirements (power quality control, energy management system) within the framework of the IEEE 1547 and 2030 standards. Key methods for modeling and optimization, such as multicriteria and stochastic optimization, are described, as well as the main challenges to implementation, such as variability in generation, cyber resilience, and costs. Examples of successful projects demonstrate improvements in reliability, flexibility, and economic efficiency for local power systems.

Annotation: The article discusses the theoretical foundations of multi-user architecture and its practical implementation, using the DraftKings platform as an example. It analyzes three basic tenant isolation models and key patterns for organizing data storage in multi-user systems. It pays special attention to the problem of traffic isolation and financial transactions in conditions of high workload and regulatory restrictions. The article shows how the DraftKings architecture combines scalability, resilience, and compliance through the use of microservice approach, AWS infrastructure, proprietary testing, and risk management solutions. It highlights organizational and technical measures to reduce financial, regulatory, and reputational risks. Promising directions for the development of multi-user architectures are also noted.

Annotation: The article discusses environmental sustainability at the well testing stage, which is considered one of the most sensitive processes in the oil and gas industry. Based on an analysis of international standards, guidelines, and industry data, sources and types of impacts are summarized, including flaring and venting, water discharge, chemicals, and waste/spills. Practices for reducing these impacts are evaluated. It is shown that maximum effect can be achieved by combining in-line testing with multiphase flow meters, trapping and compression, integration into existing systems, product reinjection, and zero discharge of water. Highly efficient flare systems are also important, as well as transitioning to methane measurement and reporting (MRV) programs. Limitations are noted, and directions for future development are proposed.