1: Mathematical Programming and Optimal Control Theory -- An Optimality Condition and its Application to Parametric Semi-Infinite Optimization -- The Choice of a Parameter in a Penalty Method -- Recent Results on ?-Conjugation and Nonconvex Optimization -- On Quantitative Stability of Point-to-Set-Mappings and the Rate of Convergence of Corresponding Algorithms -- On the Penalization Method in Convex Stochastic Programming -- A New Algorithm of Solving the Flow - Shop Problem -- On Dynamic Traffic Assignment -- On an Approximation Problem of Mechanical Structural Optimization -- Optimal Daily Scheduling of the Electricity Production in Hungary -- Power Distribution Planning and the Application of Linear Mixed-Integer Programming -- Optimal Flood Control by Reservoir Systems Using the Reduced Gradient Method -- Instant Optimization of Hydro Energy Storage Plants -- Dynamic Programming in Power System Extension Planning -- Some New Multicriteria Approaches -- Equilibrium Selection in a Wage Bargaining Situation with Incomplete Information -- Planning and Forecast Horizons in a Simple Wheat Trading Model -- Intertemporal Reversales of Environmental and Macroeconomic Policies -- Optimal Control of Concave Economic Models with two Control Instruments -- Optimal Control with Switching Dynamics -- Dynamic Systems with Several Decision-Makers -- Optimal Bimodal Harvest Policies in Age-Specific Bioeconomic Models -- Growth Rates, Optimal Harvesting and Related Topics in the Mass Rearing of Tsetse Flies -- The Release of Partly Fertile Males or Females in the Application of the Sterile-Insect Technique: Mathematical Analysis of the Hard-Release Strategy -- 2: Stochastic Models -- New Developments in Optimal Control of Queueing Systems -- Estimation and Control in a GI/M/1-System -- On Discriminating among Stochastic Models - A Survey -- Increasing the Work-Safety in Nuclear Power Plants through the Use of Preventive Maintenance Policies -- Recent Developments in Econometrics -- Slight Misspecifications of Linear Systems -- Local Sensitivity Analysis and Matrix Derivatives -- Analysis and Forecasting of Demand for Electricity Using Time Series Analysis -- Short Term Load Predication in Electric Power Systems -- Interactive Short-Term Load Forecasting -- Predicting the Demand for Electricity - An Application of Transfer Function Analysis -- Problems Associated with the Design of a Reliability Model in Electricity Industry.