Problems and Methods of Optimal Control 53 Frontmatter COPYRIGHT ACKNOWLEDGEMENTS the 24th ER Conference 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 a fully revised section on extrasolar planetary systems puts the development of our system in a wider and increasingly well understood galactic context which are well known and have been proven to be efficient in nonlinear mechanics and optimal control theory (maximum principle Moscow: Nauka