You qualify for the GS-13 grade level if you possess one (1) year of specialized experience at the GS-12 grade level or equivalent performing duties such as: Applying quantitative and qualitative analysis to a variety of complex problems (to include, but not limited to: operations processes, business and management processes, mission support to programs, allocating resources, measuring performance, designing systems, managing logistics, budget analysis, work distribution, or analyzing large databases) to assist senior leaders in decision-making and problem solving of complex operational issues; Experience utilizing mathematical models (to include but not limited to: Monte Carlo simulation, linear and nonlinear programming, dynamic programming, queuing and other stochastic-process models, Markov decision processes, econometric methods, data envelopment analysis, neural networks, expert systems, decision analysis, and the analytic hierarchy process) to describe system or process being studied. In addition to the basic requirements listed above: You qualify for the GS-12 grade level if you possess one (1) year of specialized experience at the GS-11 grade level or equivalent performing duties such as: Assisted in designing research and study methodologies; developing, applying, and interpreting appropriate models to conduct quantitative analyses that support effective planning, coordination, and acquisition life cycle program management.