Bridge Design and Construction Management from the Perspective of Sustainable Development

As urbanization accelerates and transportation networks continue to evolve, bridges, as integral components of urban infrastructure, face increasingly formidable challenges in their design and construction management. This research explores the integration of environmentally friendly, economically efficient, and socially acceptable design principles and construction management methods in bridge engineering from the perspective of sustainable development. Through case analyses and data statistics, this paper presents optimized bridge design solutions under diverse environmental conditions and investigates strategies to minimize resource waste and enhance construction efficiency, thus achieving the sustainable development goals of bridge engineering

Integration of Ideological and Political Education into the Civil Engineering Curriculum: A Case Study of the “Steel Bridge” Course at Southwest Jiaotong University’s Hope College

This research paper explores the successful integration of ideological and political education into the curriculum of the civil engineering program, focusing on the course “Steel Bridge” at Southwest Jiaotong University’s Hope College. The study outlines the course objectives, curriculum design, teaching strategies, and assesses the impact of ideological and political education on students’ comprehensive development. By examining the course’s teaching methods, content, and effectiveness, the paper aims to provide insights into the broader implementation of ideological and political education in engineering education. The findings reveal notable improvements in students’ political awareness, moral character, and overall competence through the infusion of ideological and political elements within the technical curriculum. This case study serves as a model for similar courses and contributes to the ongoing discourse on cultivating well-rounded engineers with a strong sense of social responsibility and ethical values

Monocular vision ranging and camera focal length calibration

The camera calibration in monocular vision represents the relationship between the pixels’ units which is obtained from a camera and the object in the real world. As an essential procedure, camera calibration calculates the three-dimensional geometric information from the captured two-dimensional images. Therefore, a modified camera calibration method based on polynomial regression is proposed to simplify. In this method, a parameter vector is obtained by pixel coordinates of obstacles and corresponding distance values using polynomial regression. The set of parameter’s vectors can measure the distance between the camera and the ground object in the field of vision under the camera’s posture and position. The experimental results show that the lowest accuracy of this focal length calibration method for measurement is 97.09%, and the average accuracy was 99.02%

Effects of Heating Mode and Temperature on the Microstructures, Electrical and Optical Properties of Molybdenum Thin Films

In this paper, molybdenum (Mo) thin films are deposited on soda-lime glass (SLG) substrates by direct current magnetron sputtering and heated in three different modes at different temperatures, including substrate heating, annealing treatment, and both substrate heating and annealing treatment. The effects of heating temperature and heating mode on the structures, morphology, optical and electrical properties of Mo thin films were systematically investigated by X-ray diffraction (XRD), Scanning electron microscopy (SEM), atomic force microscope (AFM) and UV-visible spectrophotometer (UV-vis spectra). It is shown that as the substrate and annealing temperature increase, the crystallinity of Mo thin films is improved, and the grain sizes become bigger. Especially in the mode of both substrate heating and annealing treatment at higher temperature, the obtained Mo thin films show higher crystallinity and conductivity. Moreover, with the increase of substrate and annealing temperature in different heating modes, both the surface compactness of Mo films and the optical reflectance increase correspondingly. Furthermore, the Mo film, prepared at the substrate heating temperature of 400 °C and annealed at 400 °C, showed excellent comprehensive performance, and the resistivity is as low as 1.36 × 10−5 Ω·cm. Using this optimized Mo thin film as an electrode, copper indium gallium selenium (CIGS) solar cells have a maximum photo-conversion efficiency of 12.8%