Indeterminate Equation: Math for Gifted Students, Zhou Xing
Автор: Rolf G. Beutel, Frank Friedrich, Xing-Ke Yang, Si- Название: Insect Morphology and Phylogeny: A Textbook for Students of Entomology ISBN: 3110262630 ISBN-13(EAN): 9783110262636 Издательство: Walter de Gruyter Цена: 78060.00 T Наличие на складе: Есть Описание: In the last decades a remarkable renaissance has materialized in insect morphology, mainly triggered by the development of new cutting-edge technologies. This is an exciting time for biological synthesis where the mysteries and data derived from genomes can be combined with centuries of data from morphology and development. And, now, more than ever, detailed knowledge of morphology is essential to understanding the evolution of all groups of organisms. In this “age of phylogenomics” researchers rely on morphological data to support molecular findings, test complex evolutionary scenarios, and for placing fossil taxa. This textbook provides an in-depth treatment of the structures and the phylogeny of the megadiverse Hexapoda. The first part presents an up-to-date overview of general insect morphology with detailed drawings, scanning electron micrographs, and 3-D reconstructions. Also included is a chapter covering innovative morphological techniques (e.g., µ-computer tomography, 3-D modeling), brief treatments of insect development and phylogenetic methods, and a comprehensive morphological glossary. The second part is of a modern synthesis of insect systematics that includes taxon-specific morphological information for all Orders. The work is an invaluable reference for students and researchers working in all facets of biology and is a must for evolutionary biologists. A detailed understanding of morphology is essential in unraveling phylogenetic relationships and developing complex evolutionary scenarios. Increasingly researchers in phylogenomics are re/turning to morphological data to support their findings, while the development of new cutting-edge technologies has further increased interest in this growing field. This definitive handbook provides an in-depth treatment of insect morphology. The first part presents an up-to-date overview of insect morphology with detailed drawings, brilliant scanning electron micrographs and 3-D reconstructions as interactive PDFs. Thisis complemented by a chapter on innovative morphological techniques (e.g., µ-computer tomography, 3-D modeling) and a comprehensive morphological glossary. The second part treats the state of the art in insect systematics and includes taxon-specific morphological information for all orders. Systematicsare treated formally, with for example the arguments for relationships (“apomorphies”) always listed explicitly. The work is a useful reference for students and researchers working in different fields of biology and a must for those dealing with insects from an evolutionary perspective.
Автор: Zhou Xing Название: Competition Algebra: Math for Gifted Students ISBN: 1542567122 ISBN-13(EAN): 9781542567121 Издательство: Неизвестно Цена: 28730.00 T Наличие на складе: Есть у поставщика Поставка под заказ. Описание: Algebra is taught from elementary school to college and beyond. Algebraic problems present a significant portion in all math competitions including MathCounts, AMC, AIME, USAMO and so on. Therefore, solving competition level algebraic problems is a must-master skills for every contest contender. Algebra includes a wide range of topics and techniques. Some of them may be related to advanced mathematical theorems and tools. Therefore, it is impossible to cover all of them in one book. However, middle school and high school level competitions usually do not require advanced mathematics. Instead, the emphasis is on the applications of basic algebraic skills in a flexible and effective way to solve complex problems. As a result, it is a wise strategy to thoroughly understand the most important topics and drill down into details of related solving techniques in order to improve one's skill and test performance. This book covers three basic but important topics: equation, sequence and function. While these topics are all taught in schools, there are some competition specific techniques which deserve a systematic discussion. Taking Vieta's theorem as an example. While polynomial transformation is a well known method to evaluate expressions such as $x_1 2+x_2 2$, there are several other powerful techniques. They can be used to evaluate some complex expressions in a more efficient and less error-prone way. These expressions can have high power such as $x_1 {7}+x_2 {7}$, or are asymmetric such as $5x_1 3 + 3 x_2 5$. In fact, the latter asymmetric expression can present a challenge to many students who only know the polynomial transformation method. In addition to expression evaluation, Vieta's theorem can also be used to solve some seemingly unrelated problems. Such problems are among top hits in various math competitions. Sequence is another good example. Most students understand the two basic types of sequences, namely, arithmetic and geometric. Though the vast majority of sequence related problems in math contests can be converted to these basic types, finding such conversion may be a demanding task which is usually not discussed in classrooms. Meanwhile, in order to become a strong competitor, one must also understand a few additional more complex sequences especially those defined recursively. They are beyond the scope of school textbooks, but are discussed in this book. The goal of this book is to give an organized in-depth discussion on competition level techniques. Fully understanding these techniques will help students to quickly recognize and solve these types of problems. It will also lay down a solid foundation for them to solve other problems whose solutions require these algebraic techniques as critical stepping stones. Please visit http: //www.mathallstar.org/ for more information.
Автор: Zhou Xing Название: Power Calculation by Examples: Math for Gifted Students ISBN: 1537171070 ISBN-13(EAN): 9781537171074 Издательство: Неизвестно Цена: 28730.00 T Наличие на складе: Есть у поставщика Поставка под заказ.
Автор: Zhou Xing Название: Art of Thinking: Math for Gifted Students ISBN: 154898972X ISBN-13(EAN): 9781548989729 Издательство: Неизвестно Цена: 28730.00 T Наличие на складе: Есть у поставщика Поставка под заказ.
Автор: Tu, Zhanchun Ou-yang Zhong-can Liu, Ji-xing Название: Geometric methods in the elastic theory of membranes in liquid crystal phases ISBN: 9813227729 ISBN-13(EAN): 9789813227729 Издательство: World Scientific Publishing Рейтинг: Цена: 119330.00 T Наличие на складе: Есть у поставщика Поставка под заказ. Описание: 'The book is highly recommended as a reference for advanced graduate students and scholars involved in geometric analysis of membranes and other elastic surfaces. Valuable techniques may be learned from the book (TM)s model constructions and sequential derivations and presentations of governing equations. Detailed analysis and solutions enable the reader with an increased understanding of the physical characteristics of membranes in liquid crystal phases such as their preferred shapes.'Contemporary PhysicsThis is the second edition of the book Geometric Methods in Elastic Theory of Membranes in Liquid Crystal Phases published by World Scientific in 1999. This book gives a comprehensive treatment of the conditions of mechanical equilibrium and the deformation of membranes as a surface problem in differential geometry. It is aimed at readers engaging in the field of investigation of the shape formation of membranes in liquid crystalline state with differential geometry. The material chosen in this book is mainly limited to analytical results. The main changes in this second edition are: we add a chapter (Chapter 4) to explain how to calculate variational problems on a surface with a free edge by using a new mathematical tool -- moving frame method and exterior differential forms -- and how to derive the shape equation and boundary conditions for open lipid membranes through this new method. In addition, we include the recent concise work on chiral lipid membranes as a section in Chapter 5, and in Chapter 6 we mention some topics that we have not fully investigated but are also important to geometric theory of membrane elasticity.
Автор: Tang, Sun Lu Название: Xing yi quan xue ISBN: 0865681856 ISBN-13(EAN): 9780865681859 Издательство: Неизвестно Рейтинг: Цена: 29850.00 T Наличие на складе: Невозможна поставка.
Автор: Xing Zhiwei Название: Footprints in the Clouds ISBN: 1760360554 ISBN-13(EAN): 9781760360559 Издательство: Неизвестно Рейтинг: Цена: 12660.00 T Наличие на складе: Есть у поставщика Поставка под заказ. Описание: Age range 6 to 9A magic-filled story that illustrates the power of imagination. Footprints in the Clouds is a delightful tale about a boy named Tom and his magical red socks. Tom`s adventures in faraway lands are brought to life with an imaginative story and stunning, colourful illustrations.
Автор: Ye Ting-Xing Название: My Name Is Number 4: A True Story from the Cultural Revolution ISBN: 0312379870 ISBN-13(EAN): 9780312379872 Издательство: Macmillan USA/Holtzbrink(MPS) Цена: 15480.00 T Наличие на складе: Есть у поставщика Поставка под заказ. Описание:
"Number Four will have a difficult life." These are the words that were uttered upon Ting-xing Ye’s birth. Soon this prophecy would prove only too true. . . .
Here is the real-life story about the fourth child in a family torn apart by China’s Cultural Revolution. After the death of both of her parents, Ting-xing and her siblings endured brutal Red Guard attacks on their schools and even in their home. At the age of sixteen, Ting-xing is exiled to a prison farm far from the world she knows.
How she struggled through years of constant terror while keeping her spirit intact is at the heart of "My Name Is Number 4." Haunting and inspiring, Ting-xing Ye’s personal account of this horri?c period in history is one that no reader will soon forget.
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