In the latest issue of the Journal of Measurements in Engineering, we present a collection of eight papers that collectively represent the dynamic landscape of engineering measurements. These papers explore a wide spectrum of topics, offering valuable insights into the challenges and opportunities within the field.

The issue begins by addressing the critical issue of tunnel construction, where the optimization of primary support parameters is highlighted to control surrounding rock deformation and ensure structural stability. Moving to the aviation sector, the assembly of large cylindrical components takes center stage. Here, the assessment of docking quality is innovatively linked to the docking force during the assembly process, thereby improving the precision of quality prediction and assessment for large aviation structures.

Another significant contribution to this issue revolves around the technology of land acquisition mapping in water conservancy and hydropower construction, employing UAV aerial surveys. This advancement enhances regional planning accuracy by extracting critical information from remote sensing images, facilitating efficient land acquisition. Urbanization has given rise to environmental challenges, including heat islands and air pollution. To address these issues, one paper employs unmanned aerial vehicles (UAVs) to measure terrain and topography, combining these measurements with environmental data to evaluate the correlation between different landscape elements and their impact on the environment within urban parks.

Foundation load and the plastic zone are meticulously examined in another paper, with a focus on sandy soil shallow foundations. The research provides valuable insights into the development and failure modes of these foundations, informing future construction practices. The impact of altitude on the propagation of explosion shock wave pressure is explored in detail, offering critical knowledge for ammunition damage assessment and shock wave testing. By reviewing both numerical simulations and actual testing results, the paper sheds light on the characterization parameters of shock wave pressure under different environmental conditions.

Furthermore, a study on metal surface defect analysis introduces an innovative approach combining ultrasonic surface wave technology, Principal Component Analysis (PCA), and wavelet domain hidden Markov models (WHMM). This improved methodology enhances the inspection of metal defects and leads to significant improvements in the hardness, toughness, and corrosion resistance of laser-surfaced metals. Lastly, structural health diagnosis is addressed through a new model updating algorithm that combines the eigenvector difference approach and particle swarm optimization. This novel approach promises higher accuracy in finite element model updating, with implications for the structural health monitoring of bridges and similar structures.

The diversity of topics covered in this issue showcases the depth and breadth of research in the realm of engineering measurements, underlining the journal's commitment to advancing the field and providing a platform for knowledge exchange and innovation.

Minvydas Ragulskis
Prof. Dr. Minvydas Ragulskis
Kaunas University of Technology, Lithuania, Editor in Chief