||The focus of this symposium will be to incorporate mean field theory and other theoretical models to fluctuation behavior to study the serration, fluctuation and and/or noise behavior in materials science. For example the serrated flow in the stress-strain curve structural materials. “Noise” is everywhere in our daily life, such as the crackling noise arising from paper crumpling and fault movement during earthquakes. In materials science, the phenomenon of noise is also ubiquitous, particularly, in the study of the deformation behavior of materials, which usually manifests as serrated plastic flows. Over the past few years, this interesting and universal phenomenon has attracted tremendous research interest, which can be observed among a wide range of advanced materials, from ordered intermetallics, superalloys, granular matters, single-crystalline metals, AlMg alloys, low carbon and transformation-induced plasticity (TWIP)/ twinning-induced plasticity (TRIP) steels, shape-memory alloys, nano materials, high-entropy alloys to metallic glasses. The symposium is designed to focus on phenomena, which involve intermittent material responses, sometimes leading to the emergence of large fluctuations like serrations in stress-strain curves, phase transformations, structural relaxation near the glass-transition, and Barkhausen noise in magnetic materials, to name a few. It is hoped that representation of experimentalists, computational scientists, and theoreticians working together to develop elastic coupling models, with a variety of scaling relations in both time and space will give presentations about their model development to help understand and predict the “noise” response of materials. One of the primary focuses of this symposium will be out-of-equilibrium situations and the need to address physical processes occurring over many orders of magnitudes in space and time, making their theoretical treatment even more challenging. The exchange of ideas, methods, approaches, and models across the boundaries of small-scale disorder (structural disorder, defects, and heterogeneities) and long-range (elastic) interactions are essential steps in the search for new theoretical paradigms that can help us account for many unexplained phenomena in physics and materials science. Models and simulations that predict out-of-equilibrium (1) Deformation behavior of crystalline metals and alloys, amorphous materials, nanocrystalline materials, composites, and granular materials (2) Shear-band formation, twining, detwinning, fatigue, plasticity, fracture morphology, earthquake, fracture, etc. and (3) experimental methods that support the model developments are areas of interest for this symposium.