Resume

• 2001

  Doctor of Philosophy (Ph.D.)

  Physics

  Northwestern University

  Calculus of Variations

  Nonlinear Dynamics

  Graduate Physics Classes

• 1993

  Spanish (a little)

  Master of Science (M.S.)

  Mechanical and Aeronautical Engineering

  Illinois Institute of Technology

• Volunteer Referee

  Referee Administrator

  Referee Instructor

  AYSO

  Public Speaking

  Circuit Design

  Physics

  Differential Equations

  University Teaching

  Amateur Astronomer

  Applied Mathematics

  Computational Physics

  Partial Differential Equations

  Statistics

  Laboratory

  Mathematics

  Nonlinear Dynamics

  Fluid Dynamics

  Amateur Telescope Builder

  Curriculum Design

  Teaching

  Machining

  Programming

  CUDA

  Effect of Noise on Solid-to-Liquid Transition in Small Granular Systems under Shear

  Dmitry Wolfson

  Lev Tsimring

  Igor Aronson

  The effect of noise on the solid-to-liquid transition of a dense granular assembly under planar shear is studied numerically using soft-particle molecular dynamics simulations in two dimensions. We focus on small systems in a thin planar Couette cell

  examining the bistable region while increasing shear

  with varying amounts of random noise

  and determine statistics of the shear required for fluidization. In the absence of noise

  the threshold value of the shear stress depends on the preparation of the system and has a broad distribution. However

  adding force fluctuations both lowers the mean threshold value of the shear stress and decreases its variability. This behavior is interpreted as thermoactivated escape through a fluctuating barrier.

  Effect of Noise on Solid-to-Liquid Transition in Small Granular Systems under Shear

  Igor Aronson

  The effect of vibration on the solid-to-liquid-like transition of a dense granular assembly under planar shear is studied numerically using soft particle molecular dynamics simulations in two dimensions. We focus on small systems in a thin planar Couette cell

  examining the bistable region while increasing shear

  with varying amounts of vertical vibration

  and determine statistics of the shear required for fluidization. In the absence of vibration

  the threshold value of the shear stress depends on the preparation of the system and has a broad distribution. However

  adding periodic vibration both lowers the mean fluidization threshold value of the shear stress and decreased its variability. A previous study performed similar simulations using random noise; the results from these two studies exhibit excellent agreement with proper normalization over appropriate ranges of parameters.

  Effect of Vibration on Solid-to-Liquid Transition in Small Granular Systems under Shear

  To perform scientific research.\n\nSpecialties: I am an experimental physicist. I do experiments in pattern formation in vertically vibrated granular materials. I also have expertise with electronics

  programming

  and machining.

  Martin

  Melhus

  Columbia College Chicago

  Benedictine University

  Midwestern State University

  DeVry University

  Westwood College

  Widener University

  Chester

  PA

  Physics Instruction

  Research

  Assistant Professor

  Widener University

  Wichita Falls

  TX

  Teaching physics

  supervising and performing research

  advising students

  service to university.

  Assistant Professor

  tenure track

  Midwestern State University

  Teach an introductory physics class

  write and grade exams and homeworks

  build and do demonstrations.

  Westwood College

  Benedictine University

  Lisle

  IL

  I run a group of student laboratories

  and present short lectures to prepare the students for the labs.

  Adjunct Professor

  Teach a physics class

  conduct laboratory exercises

  write and grade exams and homeworks.

  DeVry University

  Adjunct Professor

  Teach an introductory math class

  grade homeworks and tests

  meet with students.

  Columbia College Chicago