Convexity properties in structural optimization -- Environment and some problems of optimization -- Multiregional population projection -- System theoretic control in immunology -- Optimisation des Processus de Fermentation en Continu -- Structural identifiability of biological compartmental systems. Digital computer implementation of a testing procedure -- Stability analysis of predator-prey models via Liapunov method -- Determination d'une Representation des Noyaux de Volterra pour un Systeme Physiologique Non-Lineaire -- A combinatorial method for health-care districting -- Study of waking-sleeping behaviour using automatic analysis and quantification -- Self-sustained oscillations in the Jacob-monod mode of gene regulation -- Optimisation in the modelling of digestive tract electrical signals -- Propagation model of bio-electric potentials through the shells of the brain -- Implementable policies for improving the biomass yield of a fishery -- A control and systems analysis of articial instream aeration -- Modeling dispersion in a submerged sewage field -- The identification and adaptive prediction of urban sewer flows -- The use of mixed integer programming for the evaluation of some alternate air pollution abatement policies -- On the use of quasilinearization for the solution of sub-problems in on-line hierarchical control and its application to a water distribution network -- A computer algorithm for solving a reservoir regulation problem under conflicting objectives -- Optimal pollution control of a lake -- Modelisation et Identification d'une Relation Pluie-Debit -- A mathematical model for analysis of mountain drainage basins -- Optimal sampling system for estimating geographical distributions of natural resource and environmental pollution -- Investigation into the use of the African board game, AYO, in the study of human problem-solving -- Catastrophe theory and urban processes -- Modelling and simulation of the mesoscale mosaic structure of the lower marine trophic levels -- Optimisation et Planification des Reseaux de Telecommunications -- World models a case study on social responsability and impact -- A mathematical model for pressure swing adsorption -- A four-variable world system -- The application of gradient algorithms to the optimization of controlled versions of the world 2 model of forrester -- A new approach to modelling in planning of electric power systems -- On the optimization of peat burning plants -- A multi-area approach to the economic optimization of electric power system -- Le Probleme de la Multivalence dans le Travail Continu -- Search and montecarlo techniques for determining reservoir operating policies -- A model of many goal-oriented stochastic automata with application on a marketing problem -- The forecast and planning of manpower with implications to higher educational institutions-mathematical models -- Etablissement Automatique des Tableaux de Marche et Feuilles de Service dans un Reseau de Transport -- Construction Automatique des Horaires d'Une Ligne d'Autobus -- Regional school districting via mathematical programming -- On the optimal control of natural resource use in the neoclassical economic framework -- Computer elaboration of time-table for single railway line -- An interactive implementation of control theory techniques applied to Pindyck's model of the U.S. Economy -- Control in economy based on non-price information -- Modelling and optimization techniques in accordance with the information requirements for socio-economic development -- Population planning; a distributed time optimal control problem -- On the optimality of a switch-over policy for controlling the queue size in an M/G/1 queue with variable service rate -- Optimization of resource allocation in R+D projects -- Optimal ocean navigation -- Design and application of an interactive simulation language -- A functional package for monitoring branching methods in combinatorial optimization -- Scorpion : Systeme de Modelisation et d'Optimisation -- An interactive system for modeling -- A network combining packet switching and time division circuit switching in a common system -- Optimum allocation of investments in a two — Region economy.