Libros de ciencias, página 304 de 2840

This Intermediate Course from the "28 SAT Math Lessons" series gives you all of Dr. Steve Warners unique tips, tricks and tactics that he has developed over the last 14 years to get his students from a 500 to a 700 in SAT math. Dr. Warner has used his Ph.D. in mathematics to create the ultimate system for generating huge score increases in SAT math with only 20 minutes of preparation each day.The material in this book consists of Dr. Warners exclusive strategies that students usually pay $375 per session to access during private tutoring sessions. The unique techniques Dr. Warner teaches, now available in his "Get 800" collection of books, are the most effective ever published and cannot be found in any other SAT prep book!Be careful! Some of Dr. Warners students have shown such significant score increases that the College Board has accused them of cheating with no evidence besides their score increase from one SAT to the next. If you feel that this may happen to you after using one of Dr. Warners books please contact him before taking your next SAT and he will tell you how to protect yourself.Beware of other books on the market that claim to be as good as Dr. Warners. No book can be as effective as this one unless it targets students in a specific score range. Other tutors and authors, while very intelligent, often make a mistake by teaching every student how to solve problems in the same way. They do not understand the philosophy of the test and do not always know how to translate their own genius into points which would fit a specific students needs depending on his/her math level.The "28 SAT Math Lessons" three book series is perfect for your SAT math prep for 5 reasons:1. Each of the 3 books in the series (Beginner, Intermediate and Advanced) targets students within a specific score range. The targeted nature of these books allows you to choose a course that is a perfect fit for you. This means that you will not waste any time practicing problems that you do not need help with. The Intermediate Course is perfect if you are currently scoring between 500 and 600 on College Board practice tests.2. Dr. Warner has had to teach SAT math prep for 14 years to accumulate the powerful combination of insights and strategies found in this book. Years of experience and a unique approach have led to the ultimate product that outdoes any other SAT prep book. While other books teach general mathematical knowledge, Dr. Warners strategies are designed to exploit the tests weaknesses, which allow students to save huge amounts of time, avoid careless mistakes, and answer questions correctly without any messy algebraic computations.3. The lessons will naturally increase your mathematical maturity so that your potential score increases simultaneously with your actual score. This means that you can actually become capable of getting an 800 even if you were not before picking up the book. The information in the introduction alone is enough to raise your SAT math score up to 50 points before you even attempt one math problem4. There are over 300 SAT math problems to practice with. The book naturally progresses from easier to harder problems. It starts with Level 1, 2, and 3 problems, and then slowly focuses more on Level 3 and 4 problems as the book goes on. Explanations of the solutions are so thorough and comprehensible that even second language speakers can easily follow them.5. The course is designed to ensure that students are preparing in the most efficient way possible just by reading the book from cover to cover. No choices ever have to be made. The author has ensured that good preparation happens automatically with no effort on the readers part.

This book provides a comprehensive basics-to-advanced course in an aero-thermal science vital to the design of engines for either type of craft. The text classifies engines powering aircraft and single/multi-stage rockets, and derives performance parameters for both from basic aerodynamics and thermodynamics laws. Each type of engine is analyzed for optimum performance goals, and mission-appropriate engines selection is explained. Fundamentals of Aircraft and Rocket Propulsion provides information about and analyses of: * thermodynamic cycles of shaft engines (piston, turboprop, turboshaft and propfan); * jet engines (pulsejet, pulse detonation engine, ramjet, scramjet, turbojet and turbofan); * chemical and non-chemical rocket engines; * conceptual design of modular rocket engines (combustor, nozzle and turbopumps); and * conceptual design of different modules of aero-engines in their design and off-design state. Aimed at graduate and final-year undergraduate students, this textbook provides a thorough grounding in the history and classification of both aircraft and rocket engines, important design features of all the engines detailed, and particular consideration of special aircraft such as unmanned aerial and short/vertical takeoff and landing aircraft. End-of-chapter exercises make this a valuable student resource, and the provision of a downloadable solutions manual will be of further benefit for course instructors.

Existe una idea muy extendida que afirma que el progreso de la ciencia y la tecnología es nuestra salvación, y que, cuanto más mayor sea, mejor para nosotros. Sin embargo, ésta es una actitud excesivamente simplista e incluso peligrosa. Aunque el futuro seguramente conllevara grandes cambios causados por ese progreso, esta lejos de ser cierto que todos esos cambios vayan a ser para mejor. El ritmo de desarrollo tecnologico sin precedentes que presencio el siglo XX ha permitido que nuestras vidas sean muy distintas a lo que eran a comienzos de ese mismo siglo. No hay ninguna desaceleracion a la vista, y el siglo XXI, con casi total probabilidad, vera mas cambios revolucionarios que el XX, debido a los avances en ciencia, tecnologia y medicina. Podemos esperar que la biotecnologia, la nanotecnologia y la inteligencia artificial sean ambitos donde tengan lugar avances extraordinarios, y tal vez perturbadores. Tambien es posible que tengamos a la vista diversas formas de mejorar las capacidades cognitivas humanas, y de otro tipo, mediante farmacos, ingenieria genetica o procedimientos de interrelacion cerebro-maquina; tal vez hasta el extremo de modificar la naturaleza humana mas alla de lo que actualmente consideramos humano, y hacia una era post-humana. Los posibles beneficios de todas estas tecnologias son enorme...

Un libro que es preciso conocer ya que aborda uno de los problemas más graves que produjo el siglo XX: la contaminación que sufre la Tierra.Primavera silenciosa (1962), de la bióloga marina y zoóloga estadounidense Rachel Louise Carson (1907-1964), es un libro que es preciso conocer ya que aborda uno de los problemas mas graves que produjo el siglo XX: la contaminacion que sufre la Tierra. Utilizando un lenguaje transparente, el rigor propio del mejor analisis cientifico y ejemplos estremecedores, Carson denuncio los efectos nocivos que para la naturaleza tenia el empleo masivo de productos quimicos como los pesticidas, el DDT en particular. Se trata, por consiguiente, de un libro de ciencia que va mas alla del universo cientifico para adentrarse en el turbulento mundo de "lo social". Su trascendencia fue tal que hoy esta considerado uno de los principales responsables de la aparicion de los movimientos ecologistas a favor de la conservacion de la naturaleza. De hecho,Primavera silenciosa consiguio lo que pocos textos cientificos logran: iluminar nuestros conocimientos de procesos que tienen lugar en la naturaleza y despertar el interes de la sociedad tanto por la ciencia que es necesaria para comprender lo que sucede en nuestro planeta, como por la situacion presente y futura de la vida que existe en el.

This is an updated version of the best selling first edition, Ecological Census Techniques, with updating, some new chapters and authors. Almost all ecological and conservation work involves carrying out a census or survey. This practically focussed book describes how to plan a census, the practical details and shows with worked examples how to analyse the results. The first three chapters describe planning, sampling and the basic theory necessary for carrying out a census. In the subsequent chapters international experts describe the appropriate methods for counting plants, insects, fish, amphibians, reptiles, mammals and birds. As many censuses also relate the results to environmental variability, there is a chapter explaining the main methods. Finally, there is a list of the most common mistakes encountered when carrying out a census.

Este compendio de tablas estadísticas permite disponer de los valores criterio necesarios para estudiar la significación de la gran mayoría de pruebas estadísticas que se utilizan en la actualidad. Esta tercera edicion incluye nuevas tablas que permiten analizar, por ejemplo, la potencia de una prueba o la correccion de Sidak.Aquest material didactic de la Universitat de les Illes Balears, compendi de taules estadistiques, permet disposar dels valors criteri necessaris per estudiar la significacio de la majoria de proves estadistiques que s''utilitzen en l''actualitat. Aquesta tercera edicio inclou noves taules que permeten analitzar, per exemple, la potencia d''una prova o la correccio de Sidak.This compendium of statistical tables provides the values needed to study the significance of the majority of statistical tests used today. This third edition includes new tables to analyze, for example, the power of a test or the Sidak correction.

This book focuses on the major applications of martingales to the geometry of Banach spaces, and a substantial discussion of harmonic analysis in Banach space valued Hardy spaces is also presented. It covers exciting links between super-reflexivity and some metric spaces related to computer science, as well as an outline of the recently developed theory of non-commutative martingales, which has natural connections with quantum physics and quantum information theory. Requiring few prerequisites and providing fully detailed proofs for the main results, this self-contained study is accessible to graduate students with a basic knowledge of real and complex analysis and functional analysis. Chapters can be read independently, with each building from the introductory notes, and the diversity of topics included also means this book can serve as the basis for a variety of graduate courses.

Este material brinda conocimientos sobre diseño, recolección, análisis e interpretación de información mediante la estadística; asimismo, sirve de herramienta para la metodología científica. Para este fin, se recurre al software SPSS 22, programa practico provisto de potentes tecnicas analiticas que permiten un calculo estadistico mas acertado. El objetivo de este libro es convertir el analisis predictivo en una parte vital de las operaciones comerciales o de investigacion. Asi,de manera practica, se desarrollan temas como el manejo de datos, la manipulacion de casos y variables, la elaboracion de informes o estadisticas descriptivas, las regresiones lineales y loglineales, entre otros. El presente libro esta dirigido a estudiantes y profesionales de ingenieria, economia, administracion, sociologia, psicologia, entre otras disciplinas.

Desde el último tercio del siglo XX, el mundo, además de enfrentarse al peligro de una tercera guerra mundial nuclear, percibió el claro deterioro de sus grandes equilibrios ecológicos. Lo que en las postrimerias de la centuria llevaria a poner enfasis en la lucha contra calentamiento global y cambio climatico, a partir de la Cumbre de la Tierra (Rio-92), cuando se firmo la Convencion Marco de las Naciones Unidas sobre cambio climatico.Actualmente, esa cuestion constituye el mayor problema a medio y largo plazo de la humanidad, pues de no ir hacia una sociedad descarbonizada, la subida de las temperaturas mas alla de dos grados por encima de la era preindustrial, nos haria entrar en una situacion irreversible: la biosfera dejaria de ser un habitat hospitalario de todas las especies, para convertirse en un mundo cada vez mas inhabitable.El clima de la Tierra nunca ha sido el mismo, y dentro de el ha habido cambios espontaneos importantes a lo largo de los cientos de miles de años de que se tienen registros de temperaturas y de contenidos de gases de efecto invernadero en la atmosfera. Sin embargo, los cambios que ahora se estan produciendo, ya no se deben a fenomenos naturales como las alteraciones en la radiacion solar, o la mayor o menor inclinacion del eje planetario: son, definitivamente, de origen antropi...

La ciencia como paradigma de la abdicación del pensamiento….