Farm business management : analysis of farming systems / / Peter L. Nuthall

• Record Nr.: UNINA9910626110903321
• Autore: Nuthall P. L (Peter Leslie)
• Pubbl/distr/stampa: Wallingford, Oxfordshire, U.K. ; ; Cambridge, Mass., : CAB International, 2011
• ISBN: 1-283-26776-4; 9786613267764; 1-84593-840-2
• Descrizione fisica: 1 online resource (463 p.)
• Disciplina: 630.68
• Soggetti: Farm management - Decision making; Agricultural systems - Mathematical models
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Description based upon print version of record.
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Contents; The Author; Acknowledgements; 1 Introduction; 2 The Environment Under Which Farming Systems Exist; 3 Decisions Under Non-certainty - Probability, Methods and Models; 4 Cost-Benefit Analysis - Recognizing Input-Output Timing; 5 More on Decision Making and Utility (Objectives); 6 Farm Surveys - Uses, Procedures and Methods; 7 Improving Farming Systems Using Survey Data; and Information Systems; 8 Constructing Improved Systems; 9 Methods and Models of Income Variability Reducing Techniques; 10 Budgeting - The Simplest Form of Farm Systems Analysis; 11 Linear Programming - The Farm Model and Finding an Optimal Solution12 Linear Programming - Using the Solution and Creating Realistic Farm Models; 13 Dynamic Programming; 14 Systems Simulation; 15 The Structure and Analysis of Specific Part-Farm Problems; 16 Concluding Comments - Review and Summary; Appendix 1: A Synopsis of Production Economics; Appendix 2: Example of the Output From an Individual Farm 'End of Year' Analysis; Appendix 3: Solving Linear Programming Problems; Appendix 4: An Example of a Schematic LP Matrix for a Simple Lamb-Producing Farm; Index
• Sommario/riassunto: The third and final instalment of Peter Nuthall's ""Farm Business Management"" series, this volume teaches the practical skills needed to ; manage a farm, such as risk analysis, budgeting, cost benefit analyses and much more. The key characteristic of this book is its ability to simplify the complex subject of business management into a clear, accessible volume tailored to the topic of farming, by using engaging techniques such as worked examples to fully explain the complex decision making tools necessary for this discipline.

Quantum Triangulations : Moduli Space, Quantum Computing, Non-Linear Sigma Models and Ricci Flow / / by Mauro Carfora, Annalisa Marzuoli

• Record Nr.: UNINA9910250049803321
• Autore: Carfora Mauro
• Pubbl/distr/stampa: Cham : , : Springer International Publishing : , : Imprint : Springer, , 2017
• ISBN: 3-319-67937-6
• Edizione: [2nd ed. 2017.]
• Descrizione fisica: 1 online resource (XX, 392 p. 113 illus., 92 illus. in color.)
• Collana: Lecture Notes in Physics, , 0075-8450 ; ; 942
• Disciplina: 530.15
• Soggetti: Quantum theory; Mathematical physics; Manifolds (Mathematics); Complex manifolds; Gravitation; Physics; Quantum Physics; Mathematical Physics; Manifolds and Cell Complexes (incl. Diff.Topology); Classical and Quantum Gravitation, Relativity Theory; Mathematical Applications in the Physical Sciences; Numerical and Computational Physics, Simulation
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Preface -- Acknowledgements -- Triangulated Surfaces and Polyhedral ; Structures -- Singular Euclidean Structures and Riemann Surfaces -- Polyhedral Surfaces and the Weil-Petersson Form -- The Quantum Geometry of Polyhedral Surfaces: Non–Linear σ Model and Ricci Flow -- The Quantum Geometry of Polyhedral Surfaces: Variations on Strings and All That -- State Sum Models and Observables -- State Sum Models and Observables -- Combinatorial Framework for Topological Quantum Computing -- Appendix A: Riemannian Geometry -- Appendix B: A Capsule of Moduli Space Theory -- Appendix C: Spectral Theory on Polyhedral Surfaces -- Index.
• Sommario/riassunto: This book discusses key conceptual aspects and explores the connection between triangulated manifolds and quantum physics, using a set of case studies ranging from moduli space theory to quantum computing to provide an accessible introduction to this topic. Research on polyhedral manifolds often reveals unexpected connections between very distinct aspects of mathematics and physics. In particular, triangulated manifolds play an important role in settings such as Riemann moduli space theory, strings and quantum gravity, topological quantum field theory, condensed matter physics, critical phenomena and complex systems. Not only do they provide a natural discrete analogue to the smooth manifolds on which physical theories are typically formulated, but their appearance is also often a consequence of an underlying structure that naturally calls into play non-trivial aspects of representation theory, complex analysis and topology in a way that makes the basic geometric structures of the physical interactions involved clear. This second edition further emphasizes the essential role that triangulations play in modern mathematical physics, with a new and highly detailed chapter on the geometry of the dilatonic non-linear sigma model and its subtle and many-faceted connection with Ricci flow theory. This connection is treated in depth, pinpointing both the mathematical and physical aspects of the perturbative embedding of the Ricci flow in the renormalization group flow of non-linear sigma models. The geometry of the dilaton field is discussed from a novel standpoint by using polyhedral manifolds and Riemannian metric measure spaces, emphasizing their role in connecting non-linear sigma models’ effective action to Perelman’s energy-functional. No other published account of this matter is so detailed and informative. This new edition also features an expanded appendix on Riemannian geometry, and a rich set of new illustrations to help the reader grasp the more difficult points of the theory. The book offers a valuable guide for all mathematicians and theoretical physicists working in the field of quantum geometry and its applications.