نتایج جستجو برای: track level irregularity
تعداد نتایج: 1139313 فیلتر نتایج به سال:
Track irregularity detection serves as one of the most essential technologies to interpret in-service condition high-speed railway (HSR) and ensure comfortability safety in HSR service. This study newly proposed a novel on-board technique integrated with developed algorithm for identifying longitudinal track obtain monitoring further based maintenance (CBM). Such includes data acquisition unit,...
In order to find out the influence of subgrade frost heave on deformation track structure and irregularity high-speed railways, a nonlinear damage finite element model for China Railway Track System III (CRTSIII) slab was established based constitutive theory concrete plastic damage. The analysis under different conditions focused on, amplitude limit put forward according characteristics interl...
The El Niño/Southern Oscillation (ENSO) phenomenon is the dominant climatic fluctuation on interannual time scales. It is an irregular oscillation with a distinctive broadband spectrum. In this article, we discuss recent theories that seek to explain this irregularity. Particular attention is paid to explanations that involve the stochastic forcing of the slow ocean modes by fast atmospheric tr...
The American Academy of Pediatrics (AAP) launched the Pediatrician Life and Career Experience Study (PLACES), a longitudinal study that tracks the personal and professional experiences of early career pediatricians, in 2012. We used a multipronged approach to develop the study methodology and survey domains and items, including review of existing literature and qualitative research with the tar...
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