A Review of Energy Losses in Power Electronics Converters and Developments in Related Application Fields

To address issues encountered by underwater robots during operations, such as damage or reduced efficiency due to complex underwater terrains and strong water currents, a robot inspired by the adaptability of crabs to various terrains has been designed. This robot employs a crab-like structure equipped with anti-displa... Read more.

Excessive air gaps between conductors and other components can occur due to wind-induced swing, potentially causing flashover or even tripping, thereby threatening the stable and safe operation of the power grid. Therefore, accurate calculation of conductor wind-induced swing response is fundamental to wind-resistant d... Read more.

This study utilizes Lasso Regression and MAHAKIL over-sampling to address mult... Read more.

The intelligent mine has successfully attained the objective of cost reduction and efficiency enhancement, hence optimizing corporate advantages, through the implementation of a complete information system for mine safety production that facilitates connectivity among users at all hierarchical levels and diverse roles.<... Read more.

With the improvement of people's material living standards, people's demand for cultural life is also increasing. As a cultural form, film has attracted more and more people's attention and love, and the Chinese film market is also growing. As the most intuitive indicator to measure a movie,... Read more.

Staff scheduling management is crucial in the service industry, especially in restaurants, supermarkets, and retail stores. Currently, shift preparation work Read more.

Underwater communication is a complex and critical technology with significant value in the fields of marine resource development, marine scientific research, and military applications. The research on Underwater communication mainly focuses on improving the communication rate, enhancing the stability of signal transm... Read more.

In both military and civilian domains, the spacecraft is commonly employed to accomplish various tasks. With the ongoing advancements in mil-itary strategy and civilian technologies, task environments have become increasingly complex. Consequently, there’s a growing trend across all sectors towards integrating water and air operations to enhance task completion. With the continuous progress of biology and mechanics, the ... Read more.

The ubiquitous phenomenon of friction-generated energy, often considered to be of little practical value, has led to the development of a new technology known as friction nanogenerators (FNGs). This innovative technology offers significant potential for the sustained power supply and large-scale harvesting of wave e... Read more.

With the increasing prominence of pollution issues in offshore waters, marine ranching plays a crucial role in restoring marine ecosystems and ensuring the sustainable use of fishery resources. This paper provides a comprehensive bibliometric analysis of global marine ranching research. The study indicates that policy is the primary driver of the industry's development. ... Read more.

Theoretical mechanics, fundamental to engineering, is crucial for technological advancement in areas like mechanical design, energy, and aerospace. Despite its broad application, challenges arise when addressing complex systems or interdisciplinary studies, where current models and methods may fall short. The purpose ... Read more.

The economic efficiency of ships is an important indicator of transport vessels, and estimating the economic efficiency of ships is an important task in making investment decisions during the early stages of shipbuilding. This article, based on semi-theoretical and semi-empirical formula methods using the prototype ship of the RST12C project as a basis, estimates and anal... Read more.

3D printing technology has a very wide range of applications in various fields, when rapid manufacturing and chain stability are required in production; 3D printing technology c.an fulfil both conditions. However, limited by printer specifications, medium to large components must be printed in sections.<... Read more.

In the ongoing pursuit of bolstering maritime military capabilities, the optimization and augmentation of submarine performance stand as pivotal objectives within the realm of strategic naval power. Given the exacting operational standards required for submarines to execute vital missions like reconnaissance, stealthy attacks, and tracking, this study leverages Computational... Read more.

The oceans boast abundant resources, making the ocean economy a crucial global component. Consequently, the training of personnel in marine engineering is paramount. Practical courses play a pivotal role in this professional learning journey. However, several colleges and universities struggle to offer practical cour... Read more.

The utilization of English within the domain of marine engineering holds paramount significance, especially as exploration of the oceans continues and the field of marine engineering undergoes globalization. Nevertheless, traditional English education in marine engineering exists certain shortcomings. Teaching English to Speakers of Other Languages (TESOL), as an educational technology, harbours the potential to... Read more.

Fluid mechanics, a fundamental discipline within engineering, has gained increasing significance across various fields due to continuous advancements in engineering science and technology. Its principles and methodologies find widespread application in aerospace, energy development, environmental protection, biomedicin... Read more.

Popularization of scientific and technological resources is a strategic initiative of the national popularization of science and technology, and the participation of scientific and technological workers close to scientific and technological resources in popularization of science and technology is one of the core content... Read more.

The ocean towing system plays an important role in the ocean development process. The motion of a towed body is closely coupled with the motion of a towing cable. Munk moment coefficient represents the value of Munk moment which is caused by axial flow. Munk moment seriously affects the motion stability of towed body. In this paper, reference to the parameters of a towed ... Read more.

This paper is to investigate the seepage behavior of underwater tunnel with inclined boundary at the contact between water body and underwater stratum. Extensive finite element analyses using COMSOL are performed considering various magnitudes of inclination degree of underwater soil surf... Read more.

The ekranoplan, as a special type of vessel, combines the performance of an aircraft and a ship. It boasts high speed, low radar visibility, good maneuverability, excellent amphibious capabilities, and a unique feature that sets it apart from other vessels: it is immune to torpedo and mine attacks. This article aims t... Read more.

This article presents a comprehensive review of the unified framework for the equivalent single layer theories of composite beams, plates and shells. First, the approach to unified displacement fields has two main categories: one is to start from the assumption of linear displacement field variables. And the another is to start from the assumption of transverse strains and t... Read more.

Unsaturated soils are commonly found in coastal regions and marine sediments, where understanding the thermo-hydro-mechanical (THM) behavior, especially regarding phase transition, is crucial for related practical engineering Read more.

In recent years, the world has been paying more and more attention to the power electronics converter in the power system. The power electronics converter has made great development in its own structure and control strategy, but there are still concerns of significant energy consumption and insufficient energy saving i... Read more.

This paper is based on the CFD method to numerically study the manoeuvrability of an Read more.