Problems and Methods of Optimal Control 53 As part of a scientific 9789401063968 As part of a scientific program set up by the Danish Ministry of Environment to study environment cycling of nitrogen Frontmatter COPYRIGHT ACKNOWLEDGEMENTS PREFACE LIST OF FIGURES AND TABLES 1 INTRODUCTION 2 THEORETICAL BASIS FOR THE STUDY OF COHESION 3 DESCRIPTIVE FRAMEWORK FOR THE STUDY OF COHESION 4 COHESION IN JAMES 5 COHESION IN HEMINGWAY 6 IMPLICATIONS AND CONCLUSIONS APPENDIX I TEXT OF THE FOURTH PARAGRAPH IN CHAPTER XLII OF JAMES' THE PORTRAIT OF A LADY APPENDIX II TEXT OF THE PASSAGE STUDIED FROM HEMINGWAY'S "BIG TWO HEARTED RIVER": PART I The numerous applications of optimal control theory have given an incentive to the development of approximate techniques aimed at the construction of control laws and the optimization of dynamical systems which are well known and have been proven to be efficient in nonlinear mechanics and optimal control theory (maximum principle