About

OUR History

ChiAha was created with the help of our talented team of consulting partners and friends from:

Simulation Dynamics and Technology Optimization & Management.


ChiAha represents the culmination of 35 years of intensive model-building for a diverse spectrum of industry.

Meet Our Team

Our team of highly skilled modelers, analysts, developers, and engineers  has specialized in building professional simulation and optimization models for over 3 decades.

Partner with us today to start your raw data to prediction journey!

Meet Our Founder

Andrew Siprelle

Andrew is driven by a passion to unlock the value of simulation and modeling in helping to solve real-world problems. Since founding Simulation Dynamics, Inc. (SDI) in the early 90’s, he has been an educator, a consultant, a simulation tool developer, and a smart applications technology leader.

Andrew coined the term “Discrete Rate Simulation”, and developed one of the earliest libraries for quickly building models of multi-stage plants that produce powder or bulk solids; e.g., a breakfast cereal plant.

ChiAha is the culmination of a lifelong dream for Andrew, who has always wanted to reinvent and more widely distribute the benefits of the DRS worldview.

Meet the Doctors of Reliability

Tom Lange

Retired Director of R&D & Engineering at P&G for 36 years. 

Specialties:

  • Modeling & Simulation
  • Reliability Engineering
  • Leadership of technical organization culture and transformation
  • Leadership & Management of Modeling & Simulation
  • High Performance Computing & Software
  • Data Analysis and Statistics
  • Discrete Event and Discrete Rate Simulation Software

Bob Matthews

Retired Reliability Engineer at P&G for 36 years. 

Specialties:

  • Modeling & Simulation
  • Data Analysis and Statistics
  • Discrete Event and Discrete Rate Simulation Software
  • Control & Information Systems
  • Manufacturing Execution Systems
  • Warehouse Management Systems
  • Packing to Customization Optimization
  • Make to Pack Capacity
  • Production System Modeling
  • Plant Simulation Training
  • Warehousing Prime
  • Breakpack & Minibot

Peter Au-Yeung

Retired Senior Reliability Engineer at P&G for 35 years. 

Specialties:

  • Reliability Engineering
  • Data Analysis and Statistics
  • Modeling & Simulation

Jeff Holland

Retired Global Baby Care Director of Reliability Engineering at P&G for 32 years. 

Specialties:

  • Reliability Engineering Manager
  • Senior Reliability Engineer
  • Maintenance Reliability Engineer
  • Reliability Analyst
  • Data Analysis and Statistics