Open Problems

TreeAge Software, Inc. TreeAge Software, Inc.- Decision tree analysis software. Banxia: Software for Data Envelopment Analysis and qualitative modeling Banxia: Software for Data Envelopment Analysis and qualitative modeling- Developer of Frontier Analyst, and Decision Explorer software for professional decision making. LINDO Systems LINDO Systems- Optimization modelling software. AgenaRisk AgenaRisk- Software and consulting in Bayesian networks, simulation and risk analysis. Causal modeling, data analysis and statistical modeling for AI, financial risk, six-sigma an… Lumina Decision Systems, Inc. Lumina Decision Systems, Inc.- Business modelling consulting, software, and seminars. Palisade Corporation Palisade Corporation- Risk and decision analysis software, including @RISK. Decisioneering, Inc. Decisioneering, Inc.- Producer of Excel-based risk and decision analysis tools (Crystal Ball, CB Predictor) for business forecasting Decision Science Center Decision Science Center- Decision Science Center partners with companies to consult in the areas of optimal business decisions across industries. Malt Company Malt Company- Barley Malt, Wheat Malt, Malt Extract, Dry Malt Extract, Liquid Malt Extract, Malt Flour. The Geometry of the Sphere The Geometry of the Sphere- This material was the text for part of the Advanced Mathematics course in the High School Teachers Program at the IAS/Park City Mathematics Institute a… Camacho, Erika Camacho, Erika- Arizona State University. Applications of nonlinear differential equations: collaboration with biologists and sociologists to bring more realism to mathematical mo… Hang, Fengbo Hang, Fengbo- Department of Mathematics, New York University. Subjects: geometric analysis, nonlinear partial differential equations, geometric measure theory. Schmeidel, Ewa Schmeidel, Ewa- Poznañ University of Technology. Difference equations. Netrusov, Yuri Netrusov, Yuri- University of Bristol. Functional Spaces;Partial differential equations; Spectral theory. Publications, projects. Shtelen, Vladimir Shtelen, Vladimir- Rutgers University. Nonlinear PDEs. Papers and teaching material. Signals, Systems and Control Demonstrations Signals, Systems and Control Demonstrations- Resource of applets and interactive lectures dedicated the control theory from the Johns Hopkins University. PID Simulator on Spreadsheet PID Simulator on Spreadsheet- Free PID loop simulator for Excel. Control Theory Control Theory- Brief introduction to the feedback theory in plain text. Addresses infinite dimension systems, active noise control, non-linear systems and related applications. Wikipedia: Control Theory Wikipedia: Control Theory- Comprehensive overview and glossary about the theory. Includes definitions, mathematical aspects, historical background and examples. Wikipedia: Control Engineering Wikipedia: Control Engineering- Definition of control engineering. Includes modelling approaches and application fields. Tuning a PID Controller Tuning a PID Controller- Describes the different types of controller. Addresses efficiency and stability aspects. PID Controller PID Controller- Description of the PID control loop. Includes transient diagrams and source codes. Nyquist Stability Nyquist Stability- Explains the basics of the Nyquist controller stability criteria. Includes diagrams and Bode plots. Feedback and Temperature Control Feedback and Temperature Control- Scientific article about temperature controller. Addresses controller types, algorithms, transient responses and simulations. Digital Control Tutorial Digital Control Tutorial- Explains the digital control theory and its applications in microprocessor-based controllers. Addresses z-transformation, stability and transient respons… Design and Analysis of Control Systems Research Laboratory Design and Analysis of Control Systems Research Laboratory- Department of the University of Massachusetts, USA, concerned with control research. Includes publications, research to… Control Tutorials for Matlab: PID Tutorial Control Tutorials for Matlab: PID Tutorial- Introduction to the theory with focus on PID control. Includes background and examples with source code. Control Theory 101 Control Theory 101- Describes the basics of PID algorithms. Addresses proportional, integral and derivative components and their effects. Bode and Nyquist Using Excel Bode and Nyquist Using Excel- Explains how spreadsheets can be used to obtain Bode and Nyquist Diagrams, from the University of Michigan, USA. Includes several illustrated example… Russian Systems and Control Archive Russian Systems and Control Archive- Information about Russian specialists, groups, institutes, foundations, conferences, journals and books related to systems and control. [Engli…