Libros de ciencias, página 62 de 2700

Convex optimization problems arise frequently in many different fields.This book provides a comprehensive introduction to the subject, and shows in detail how such problems can be solved numerically with great efficiency. The book begins with the basic elements of convex sets and functions, and then describes various classes of convex optimization problems. Duality and approximation techniques are then covered, as are statistical estimation techniques. Various geometrical problems are then presented, and there is detailed discussion of unconstrained and constrained minimization problems, and interior-point methods.The focus of the book is on recognizing convex optimization problems and then finding the most appropriate technique for solving them. It contains many worked examples and homework exercises and will appeal to students, researchers and practitioners in fields such as engineering, computer science, mathematics, statistics, finance and economics.- Gives comprehensive details on how to recognize convex optimization problems in a wide variety of settings.- Provides a broad range of practical algorithms for solving real problems.- Contains hundreds of worked examples and homework exercises.

The third edition of this proven text has been developed further in both scope and scale to reflect the potential for superconductivity in power engineering to increase efficiency in electricity transmission or engines. The landmark reference remains a comprehensive introduction to the field, covering every aspect from fundamentals to applications, and presenting the latest developments in organic superconductors, superconducting interfaces, quantum coherence, and applications in medicine and industry. Due to its precise language and numerous explanatory illustrations, it is suitable as an introductory textbook, with the level rising smoothly from chapter to chapter, such that readers can build on their newly acquired knowledge.

Las descripciones para la identificación de especies de interés agrícolas se encuentran esparcidas por floras de todo el mundo y presentan diferencias, para una misma especie, según areas y según los genotipos presentes en cada area. Lo que se pretende en este texto, es componer una descripcion que sirva para identificar determinada especie en cualquier area y para cualquier genotipo. Para ello se han recopilado diagnosis de las especies en textos antiguos y en textos modernos, en floras regionales y en monografias y se ha tratado de conciliar las diferencias existentes. Importante y completisimo libro de consulta de Botanica Agricola.

This book is about learning from data using the Generalized Additive Models for Location, Scale and Shape (GAMLSS). GAMLSS extends the Generalized Linear Models (GLMs) and Generalized Additive Models (GAMs) to accommodate large complex datasets, which are increasingly prevalent. GAMLSS allows any parametric distribution for the response variable and modelling all the parameters (location, scale and shape) of the distribution as linear or smooth functions of explanatory variables. This book provides a broad overview of GAMLSS methodology and how it is implemented in R. It includes a comprehensive collection of real data examples, integrated code, and figures to illustrate the methods, and is supplemented by a website with code, data and additional materials.

Given the importance of interdisciplinary work in sustainability, Simulation of Ecological and Environmental Models introduces the theory and practice of modeling and simulation as applied in a variety of disciplines that deal with earth systems, the environment, ecology, and human-nature interactions. Based on the author's many years of teaching graduate and undergraduate students in the United States, Spain, and Latin America, the textbook shows how to implement simulations and analyze the results using an open-source software platform. Learn How to Use a Broad Range of Environmental Models The textbook is organized into three parts to allow greater flexibility using the material in various countries and types of curricula. The first part provides a tutorial-style mathematical review and a gentle introduction to the basics of R software. The second part explains the fundamentals of modeling methodology through one-dimensional models. After a review of matrix algebra, the third part progresses to multidimensional models, focusing on structured populations, communities, and ecosystems. The final chapters show how simple models are hooked together to generate more comprehensive models. Build from Fundamental Concepts to Problem Solving Each chapter starts with conceptual and theoretical material to give a firm foundation in how the methods work. Examples and exercises illustrate the applications and demonstrate how to go from concepts to problem solving. Hands-on computer sessions let students grasp the practical implications and learn by doing. Throughout, the computer examples and exercises use seem, an open-source R package developed by the author, which lets students quickly produce simulations and explore the effects of changing conditions in the model. This practical book is a comprehensive, unified presentation of ecological and environmental models. It describes the mathematical fundamentals to analyze models and the methodology to simulate them, with a focus on understanding environmental change-a key element of environmental management and problem solving.

Focused on basics and processes, this textbook teaches plant biology and agriculture applications with summary and discussion questions in each chapter. Updates each chapter to reflect advances / changes since the first edition, for example: new biotechnology tools and advances, genomics and systems biology, intellectual property issues on DNA and patents, discussion of synthetic biology tools Features autobiographical essays from eminent scientists, providing insight into plant biotechnology and careers Has a companion website with color images from the book and PowerPoint slides Links with author's own website that contains teaching slides and graphics for professors and students: http://bit.ly/2CI3mjp

This textbook contains evaluations of the types of organic soil constituents including organisms, fresh residues, and well-decomposed substances. It explores the beneficial effects of organic matter on soil and the various practices that enhance SOM. Recognition of the importance of soil organic matter (SOM) in soil health and quality is a major part of fostering a holistic, preventive approach to agricultural management. Students in agronomy, horticulture, and soil science need a textbook that emphasizes strategies for using SOM management in the prevention of chemical, biological, and physical problems. Soil Organic Matter in Sustainable Agriculture gathers key scientific reviews concerning issues that are critical for successful SOM management. This textbook contains evaluations of the types of organic soil constituents-organisms, fresh residues, and well-decomposed substances. It explores the beneficial effects of organic matter on soil and the various practices that enhance SOM. Chapters include an examination of the results of crop management practices on soil organisms, organic matter gains and losses, the significance of various SOM fractions, and the contributions of fungi and earthworms to soil quality and crop growth. Emphasizing the prevention of imbalances that lead to soil and crop problems, the text also explores the development of soils suppressive to plant diseases and pests, and relates SOM management to the supply of nutrients to crops. This book provides the essential scientific background and poses the challenging questions that students need to better understand SOM and develop improved soil and crop management systems.

No se han escatimado esfuerzos por actualizar el contenido y atributos pedagógicos de esta nueva edición (incluido que por primera vez en español se publica a todo color), de modo que se presente de manera precisa cada aspecto de la biologia moderna. En todo el libro se insiste en tres temas basicos: transmision de la informacion, evolucion de la vida, y flujo de energia por los sistemas vivos. Al presentar los conceptos de la biologia moderna, se explica el modo en que estos temas estan relacionados y en que la vida depende de ellos. Tambien se insiste en el proceso de la ciencia y en la funcion de los muchos cientificos que han contribuido a nuestra comprension actual de la biologia. Como en ediciones previas, en esta se incluyen diversos auxiliares didacticos para que el estudiante domine conceptos vertidos