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Showing 1 - 25 of
78 matches in All Departments
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Hot Shot Hockey (Paperback)
Eduardo Garcia; Contributions by Berenice Muniz; Jake Maddox
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R225
R190
Discovery Miles 1 900
Save R35 (16%)
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Ships in 10 - 15 working days
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When someone mentions the word ârobotâ, what comes to mind?
Many people think of mechanical characters often seen in science
fiction films. But look around and youâll notice that our world
is full of robots. From medical devices people use to help them
walk to probes that explore the oceans and outer space, robots are
all around us. In this non-fiction graphic novel, readers can join
Max Axiom and the Society of Super Scientists as they take a closer
look at the many kinds of robots and how they make our lives better
every day.
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Hot Shot Ice Hockey
Eduardo Garcia; Cover design or artwork by Berenice MuĂąiz; Jake Maddox
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R216
Discovery Miles 2 160
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Ships in 12 - 17 working days
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Robyn Ray is a young ice hockey player with lots of speed and one
big problem - she canât seem to score a goal. Can her formerly
famous ice hockey star grandpa help her build the skills she needs
to score? And will her team come together when it matters most?
Combining exciting sports stories and a diiverse cast of characters
with a dynamic graphic novel format, this fast-paced tale of
sportsmanship and teamwork comes to life in a full-colour graphic
novel. Supportive back matter, including comprehension questions,
writing prompts and non-fiction sports info, helps young readers
and sports enthusiasts step up their game.
On July 20, 1969, Neil Armstrong became the first person to set
foot on the moon. For the next three years, several other missions
to the moon helped scientists learn more about space travel.
However, nobody has been to the moon since 1972. Today, NASA is
planning to go back to the moon for the first time in more than 50
years. In this non-fiction graphic novel, young readers can tag
along with Max Axiom and the Society of Super Scientists to
discover how NASA plans to finally return to the moon and establish
a permanent presence on Earthâs closest neighbour.
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Trick-Shot Triumph (Paperback)
Eduardo Garcia; Cover design or artwork by Bere Muniz; Jake Maddox
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R212
Discovery Miles 2 120
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Ships in 12 - 17 working days
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When Mariana and her new friend, Selena, try to play some
basketball at a local court, they're challenged to a game by two
older girls. If Mariana and Selena win, they get to use the court.
But if the older girls win, they get Selena's special autographed
shirt. Unfortunately, things go badly and the younger girls lose
the bet-and the shirt. However, they soon come up with a plan.
Although some of Mariana's skills are lacking, she's great at
shooting hoops. Will the friends succeed in their hoops hustle to
get back Selena's special shirt?
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In the Red Zone (Paperback)
Jake Maddox; Cover design or artwork by Berenice Muniz; Illustrated by Eduardo Garcia
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R214
Discovery Miles 2 140
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Ships in 12 - 17 working days
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Star quarterback Alex has always played football with his best
friend, Oscar. But when Oscar suddenly quits the team to join the
school play, Alex feels blindsided and betrayed. Now pressure is
mounting on and off the field. Can the two boys ever recover from
their friendship fumble? Young readers will love the exciting
American football story and the electrifying full-colour comic
format in this Sport Stories Graphic Novel.
Countless animals around the world are in danger of dying out! But
why are species becoming extinct, and what happens when we lose
them? In this non-fiction graphic novel, Max Axiom and the Society
of Super Scientists are on a mission to find out. Using their
superpowers and super-smarts, the team will break down this urgent
issue into an exciting, fact-filled adventure so young readers can
learn about the causes and effects of animal extinction and
endangerment and discover steps we can all take to save Earth's
wildlife.
A major flaw in semi-Riemannian geometry is a shortage of suitable
types of maps between semi-Riemannian manifolds that will compare
their geometric properties. Here, a class of such maps called
semi-Riemannian maps is introduced. The main purpose of this book
is to present results in semi-Riemannian geometry obtained by the
existence of such a map between semi-Riemannian manifolds, as well
as to encourage the reader to explore these maps. The first three
chapters are devoted to the development of fundamental concepts and
formulas in semi-Riemannian geometry which are used throughout the
work. In Chapters 4 and 5 semi-Riemannian maps and such maps with
respect to a semi-Riemannian foliation are studied. Chapter 6
studies the maps from a semi-Riemannian manifold to 1-dimensional
semi- Euclidean space. In Chapter 7 some splitting theorems are
obtained by using the existence of a semi-Riemannian map. Audience:
This volume will be of interest to mathematicians and physicists
whose work involves differential geometry, global analysis, or
relativity and gravitation.
Trees are being cut down around the world. But why are rainforests
being cleared, and what happens if they disappear? In this
non-fiction graphic novel, Max Axiom and the Society of Super
Scientists are on a mission to find out! Using their superpowers
and super-smarts, the team will break down this complex
environmental issue into an exciting, fact-filled adventure so
young readers can learn about the causes and effects of
deforestation and discover steps we can all take to protect these
fragile ecosystems.
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Catch Football's Beat (Paperback)
Jake Maddox; Cover design or artwork by Berenice Muniz; Illustrated by Eduardo Garcia
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R213
Discovery Miles 2 130
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Ships in 12 - 17 working days
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Bianca is thrilled when her parents announce that her grandfather
is coming to live with them. Bianca and Abuelo share a love of
football, and she can't wait to share her love of drumming with her
grandfather too. But when Abuelo arrives, he has his own ideas
about how Bianca should practise and play. Those ideas translate
into trouble on the field. Can Bianca find the beat in her feet
before it costs her team the tournament?
This book reviews the state of the art in the use of organic
materals as physical, chemical and biomedical sensors in a variety
of application settings. Topics covered include organic
semiconductors for chemical and physical sensing; conducting
polymers in sensor applications; chemically functionalized organic
semiconductors for highly selective sensing; composite
organic-inorganic sensors; artificial skin applications; organic
thin film transistor strain gauges for biomedical applications;
OTFT infrared sensors for touchless human-machine interaction;
smart fabric sensors and e-textile technologie; image capture with
organic sensors; organic gas sensors and electronic noses;
electrolyte gated organic transistors for bio-chemical sensing;
ion-selective organic electrochemical transistors; DNA biosensors;
metabolic organic sensors; and conductive polymer based sensors for
biomedical applications.
Con algunos relatos diferentes entre si, un misterioso hombre trata
de influenciar el estado de animo de dos viajeros a bordo de un
barco que navega con rumbo a un pais desconocido y maravilloso, en
el cual, solo existen la alegria y la felicidad. Durante la
travesia, ese hombre, que se autonombra como un narrador de
historias, en cada relato que les cuenta, hace que la pareja vaya
cambiando el modo de percibir las cosas acerca de diferentes hechos
ocurridos en sus vidas. Casi al final del viaje -que es
completamente surrealista- los viajeros deben decidir por si mismos
si lo terminan, o regresan a su lugar de origen a continuar con sus
vidas actuales, vacias de cosas buenas y llenas de una cruel
desesperanza; a tratar de sobrevivir en un lugar muy triste, donde
no le importan a nadie y que se encuentra dominado por la maldad en
todos su rincones.
Pharmaceutical and fine chemical products are typically synthesised
batchwise which is an anomaly since batch processes have a series
of practical and economical disadvantages. On the contrary, flow
continuous processes present a series of advantages leading to new
ways to synthesise chemical products. Flow processes - * enable
control reaction parameters more precisely (temperature, residence
time, amount of reagents and solvent etc.), leading to better
reproducibility, safer and more reliable processes * can be
performed more advantageously using immobilized reagents or
catalysts * improve the selectivity and productivity of the process
and possibly even the stability of the catalyst * offer
opportunities for heat exchange and energy conservation as well as
an easy separation and recycling of the reactants and products by
adequate process design * achieve multistep syntheses by assembling
a line of reactors with minimum or no purification in between two
reaction steps * can be assured by facile automation * scale-up can
be easily conducted by number-up With all the new research activity
in manufacturing chemical products, this comprehensive book is very
timely, as it summarises the latest trends in organic synthesis. It
gives an insight into flow continuous processes, outlining the
basic concepts and explaining the terminology of, and systems
approach to, process design dealing with both homogeneous and
heterogeneous catalysis and mini- or micro-reactors. The book
contains case studies, extensive bibliographies and reference lists
in each chapter to enable the reader to grasp the contents and to
go on to more detailed texts on specific subjects if desired. The
book is written by both organic chemists and engineers giving a
multidisciplinary vision of the new tools and methodologies in this
field. It is essential reading for organic chemists (in industry or
academia) working alongside chemical engineers or who want to
undertake chemical engineering projects. It will also be of
interest for chemical engineers to see how basic engineering
concepts are applied in modern organic chemistry.
This volume contains research and expository papers on recent
advances in foliations and Riemannian geometry. Some of the topics
covered in this volume include: topology, geometry, dynamics and
analysis of foliations, curvature, submanifold theory, Lie groups
and harmonic maps.Among the contributions, readers may find an
extensive survey on characteristic classes of Riemannian foliations
offering also new results, an article showing the uniform
simplicity of certain diffeomorphism groups, an exposition of
convergences of contact structures to foliations from the point of
view of Thurston's and Thurston-Bennequin's inequalities, a
discussion about Fatou-Julia decompositions for foliations and a
description of singular Riemannian foliations on spaces without
conjugate points.Papers on submanifold theory focus on the
existence of graphs with prescribed mean curvature and mean
curvature flow for spacelike graphs, isometric and conformal
deformations and detailed surveys on totally geodesic submanifolds
in symmetric spaces, cohomogeneity one actions on hyperbolic spaces
and rigidity of geodesic spheres in space forms. Geometric
realizability of curvature tensors and curvature operators are also
treated in this volume with special attention to the affine and the
pseudo-Riemannian settings. Also, some contributions on biharmonic
maps and submanifolds enrich the scope of this volume in providing
an overview of different topics of current interest in differential
geometry.
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Raising the Flag on Iwo Jima
Nel Yomtov; Contributions by Eduardo Garcia
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R236
R186
Discovery Miles 1 860
Save R50 (21%)
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Ships in 10 - 15 working days
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Pseudo-Riemannian geometry is, to a large extent, the study of the
Levi-Civita connection, which is the unique torsion-free connection
compatible with the metric structure. There are, however, other
affine connections which arise in different contexts, such as
conformal geometry, contact structures, Weyl structures, and almost
Hermitian geometry. In this book, we reverse this point of view and
instead associate an auxiliary pseudo-Riemannian structure of
neutral signature to certain affine connections and use this
correspondence to study both geometries. We examine Walker
structures, Riemannian extensions, and Kahler--Weyl geometry from
this viewpoint. This book is intended to be accessible to
mathematicians who are not expert in the subject and to students
with a basic grounding in differential geometry. Consequently, the
first chapter contains a comprehensive introduction to the basic
results and definitions we shall need---proofs are included of many
of these results to make it as self-contained as possible.
Para-complex geometry plays an important role throughout the book
and consequently is treated carefully in various chapters, as is
the representation theory underlying various results. It is a
feature of this book that, rather than as regarding para-complex
geometry as an adjunct to complex geometry, instead, we shall often
introduce the para-complex concepts first and only later pass to
the complex setting. The second and third chapters are devoted to
the study of various kinds of Riemannian extensions that associate
to an affine structure on a manifold a corresponding metric of
neutral signature on its cotangent bundle. These play a role in
various questions involving the spectral geometry of the curvature
operator and homogeneous connections on surfaces. The fourth
chapter deals with Kahler--Weyl geometry, which lies, in a certain
sense, midway between affine geometry and Kahler geometry. Another
feature of the book is that we have tried wherever possible to find
the original references in the subject for possible historical
interest. Thus, we have cited the seminal papers of Levi-Civita,
Ricci, Schouten, and Weyl, to name but a few exemplars. We have
also given different proofs of various results than those that are
given in the literature, to take advantage of the unified treatment
of the area given herein.
A major flaw in semi-Riemannian geometry is a shortage of suitable
types of maps between semi-Riemannian manifolds that will compare
their geometric properties. Here, a class of such maps called
semi-Riemannian maps is introduced. The main purpose of this book
is to present results in semi-Riemannian geometry obtained by the
existence of such a map between semi-Riemannian manifolds, as well
as to encourage the reader to explore these maps. The first three
chapters are devoted to the development of fundamental concepts and
formulas in semi-Riemannian geometry which are used throughout the
work. In Chapters 4 and 5 semi-Riemannian maps and such maps with
respect to a semi-Riemannian foliation are studied. Chapter 6
studies the maps from a semi-Riemannian manifold to 1-dimensional
semi- Euclidean space. In Chapter 7 some splitting theorems are
obtained by using the existence of a semi-Riemannian map. Audience:
This volume will be of interest to mathematicians and physicists
whose work involves differential geometry, global analysis, or
relativity and gravitation.
This book, which focuses on the study of curvature, is an
introduction to various aspects of pseudo-Riemannian geometry. We
shall use Walker manifolds (pseudo-Riemannian manifolds which admit
a non-trivial parallel null plane field) to exemplify some of the
main differences between the geometry of Riemannian manifolds and
the geometry of pseudo-Riemannian manifolds and thereby illustrate
phenomena in pseudo-Riemannian geometry that are quite different
from those which occur in Riemannian geometry, i.e. for indefinite
as opposed to positive definite metrics. Indefinite metrics are
important in many diverse physical contexts: classical cosmological
models (general relativity) and string theory to name but two.
Walker manifolds appear naturally in numerous physical settings and
provide examples of extremal mathematical situations as will be
discussed presently. To describe the geometry of a
pseudo-Riemannian manifold, one must first understand the curvature
of the manifold. We shall analyze a wide variety of curvature
properties and we shall derive both geometrical and topological
results. Special attention will be paid to manifolds of dimension 3
as these are quite tractable. We then pass to the 4 dimensional
setting as a gateway to higher dimensions. Since the book is aimed
at a very general audience (and in particular to an advanced
undergraduate or to a beginning graduate student), no more than a
basic course in differential geometry is required in the way of
background. To keep our treatment as self-contained as possible, we
shall begin with two elementary chapters that provide an
introduction to basic aspects of pseudo-Riemannian geometry before
beginning on our study of Walker geometry. An extensive
bibliography is provided for further reading. Math subject
classifications : Primary: 53B20 -- (PACS: 02.40.Hw) Secondary:
32Q15, 51F25, 51P05, 53B30, 53C50, 53C80, 58A30, 83F05, 85A04 Table
of Contents: Basic Algebraic Notions / Basic Geometrical Notions /
Walker Structures / Three-Dimensional Lorentzian Walker Manifolds /
Four-Dimensional Walker Manifolds / The Spectral Geometry of the
Curvature Tensor / Hermitian Geometry / Special Walker Manifolds
The subject of this book is Osserman semi-Riemannian manifolds, and in particular, the Osserman conjecture in semi-Riemannian geometry. The treatment is pitched at the intermediate graduate level and requires some intermediate knowledge of differential geometry. The notation is mostly coordinate-free and the terminology is that of modern differential geometry. Known results toward the complete proof of Riemannian Osserman conjecture are given and the Osserman conjecture in Lorentzian geometry is proved completely. Counterexamples to the Osserman conjuncture in generic semi-Riemannian signature are provided and properties of semi-Riemannian Osserman manifolds are investigated.
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Nadine Gordimer
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R383
R310
Discovery Miles 3 100
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