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Books > Science & Mathematics > Physics
This book contains selected papers from the First International
Conference on the Ontology of Spacetime. Its fourteen chapters
address two main questions: first, what is the current status of
the substantivalism/relationalism debate, and second, what about
the prospects of presentism and becoming within present-day physics
and its philosophy? The overall tenor of the four chapters of the
book's first part is that the prospects of spacetime
substantivalism are bleak, although different possible positions
remain with respect to the ontological status of spacetime. Part II
and Part III of the book are devoted to presentism, eternalism, and
becoming, from two different perspectives. In the six chapters of
Part II it is argued, in different ways, that relativity theory
does not have essential consequences for these issues. It certainly
is true that the structure of time is different, according to
relativity theory, from the one in classical theory. But that does
not mean that a decision is forced between presentism and
eternalism, or that becoming has proved to be an impossible
concept. It may even be asked whether presentism and eternalism
really offer different ontological perspectives at all. The writers
of the last four chapters, in Part III, disagree. They argue that
relativity theory is incompatible with becoming and presentism.
Several of them come up with proposals to go beyond relativity, in
order to restore the prospects of presentism.
- Space and time in present-day physics and philosophy
- Introduction from scratch of the debates surrounding time
- Broad spectrum of approaches, coherently represented
This book is devoted to an important branch of the dynamical
systems theory: the study of the fine (fractal) structure of
Poincare recurrences -instants of time when the system almost
repeats its initial state. The authors were able to write an
entirely self-contained text including many insights and examples,
as well as providing complete details of proofs. The only
prerequisites are a basic knowledge of analysis and topology. Thus
this book can serve as a graduate text or self-study guide for
courses in applied mathematics or nonlinear dynamics (in the
natural sciences). Moreover, the book can be used by specialists in
applied nonlinear dynamics following the way in the book. The
authors applied the mathematical theory developed in the book to
two important problems: distribution of Poincare recurrences for
nonpurely chaotic Hamiltonian systems and indication of
synchronization regimes in coupled chaotic individual systems.
* Portions of the book were published in an article that won the
title "month's new hot paper in the field of Mathematics" in May
2004
* Rigorous mathematical theory is combined with important physical
applications
* Presents rules for immediate action to study mathematical models
of real systems
* Contains standard theorems of dynamical systems theory
This book describes the advanced stability theories for
magnetically confined fusion plasmas, especially in tokamaks. As
the fusion plasma sciences advance, the gap between the textbooks
and cutting-edge researches gradually develops.
This book reports on the extraordinary observation of TeV gamma
rays from the Crab Pulsar, the most energetic light ever detected
from this type of object. It presents detailed information on the
painstaking analysis of the unprecedentedly large dataset from the
MAGIC telescopes, and comprehensively discusses the implications of
pulsed TeV gamma rays for state-of-the-art pulsar emission models.
Using these results, the book subsequently explores new testing
methodologies for Lorentz Invariance Violation, in terms of a
wavelength-dependent speed of light. The book also covers an
updated search for Very-High-Energy (VHE), >100 GeV, emissions
from millisecond pulsars using the Large Area Telescope on board
the Fermi satellite, as well as a study on the promising Pulsar
Wind Nebula candidate PSR J0631. The observation of VHE gamma rays
is essential to studying the non-thermal sources of radiation in
our Universe. Rotating neutron stars, also known as pulsars, are an
extreme source class known to emit VHE gamma rays. However, to date
only two pulsars have been detected with emissions above 100 GeV,
and our understanding of their emission mechanism is still lacking.
The article by Fulde, Thalmeier and Zwicknagl traces many of the
recent developments in the field of strongly correlated many
electron systems. It is very useful both as a reference and a
pedagogical exposition since it places these developments into a
historical context beginning with early developments in the
electron theory of solids. The second article in this volume, by
Brechet and Hutchinson, concerns pattern formation in metals and
alloys. Spontaneous pattern formation is the development of a
regularity, either in the spatial distribution of the material in a
system or in its development in time, of a lower symmetry than that
of its cause. These phenomena have been of considerable interest to
the non-linear physics community, in particular in fluid dynamics
and in chemical reactions.
- Continuation of prestigious serial
- Covers cutting edge research and topics in solid state
physics
- Studies strongly correlated electron systems and pattern
formation in metal and alloys"
This book treats essentials from neurophysiology (Hodgkin-Huxley
equations, synaptic transmission, prototype networks of neurons)
and related mathematical concepts (dimensionality reductions,
equilibria, bifurcations, limit cycles and phase plane analysis).
This is subsequently applied in a clinical context, focusing on EEG
generation, ischaemia, epilepsy and neurostimulation. The book is
based on a graduate course taught by clinicians and mathematicians
at the Institute of Technical Medicine at the University of Twente.
Throughout the text, the author presents examples of neurological
disorders in relation to applied mathematics to assist in
disclosing various fundamental properties of the clinical reality
at hand. Exercises are provided at the end of each chapter; answers
are included. Basic knowledge of calculus, linear algebra,
differential equations and familiarity with MATLAB or Python is
assumed. Also, students should have some understanding of
essentials of (clinical) neurophysiology, although most concepts
are summarized in the first chapters. The audience includes
advanced undergraduate or graduate students in Biomedical
Engineering, Technical Medicine and Biology. Applied mathematicians
may find pleasure in learning about the neurophysiology and clinic
essentials applications. In addition, clinicians with an interest
in dynamics of neural networks may find this book useful, too.
A mind-bending excursion to the limits of science and
mathematics
Are some scientific problems insoluble? In Beyond Reason,
internationally acclaimed math and science author A. K. Dewdney
answers this question by examining eight insurmountable
mathematical and scientific roadblocks that have stumped thinkers
across the centuries, from ancient mathematical conundrums such as
"squaring the circle," first attempted by the Pythagoreans, to
G?del's vexing theorem, from perpetual motion to the upredictable
behavior of chaotic systems such as the weather.
A. K. Dewdney, PhD (Ontario, Canada), was the author of Scientific
American's "Computer Recreations" column for eight years. He has
written several critically acclaimed popular math and science
books, including A Mathematical Mystery Tour (0-471-40734-8); Yes,
We Have No Neutrons (0-471-29586-8); and 200% of Nothing
(0-471-14574-2).
For some time immunotherapy has been heralded as a breakthrough
approach for cancer treatment. Although the potential of this
strategy remains solid, the approach needs considerable refinement.
Whilst some programmes are looking to increase the understanding of
molecular and cellular mechanisms underlying the stimulation of
antitumor immunity, others are trying to find the most appropriate
clinical setting that will reveal the role of the immune system in
combating cancer. Among the most important discoveries have been
tumor-specific antigens.
This thematic volume highlights some key issues and discusses where
they may move forward. It has been put together by two leading
cancer immunotherapists from two eminent institutions that focus on
cancer research.
Have you ever seen a comet? It is a marvelous experience, one that
all humans can share, that spawns a deep yearning to understand the
spectacle. Have you ever wondered what comets are and why
astronomers spend so much time studying them? Now, a comet expert
and an astronomical historian have come together to produce the
unique book that you now hold in your hands. Using their several
decades of teaching experience, the authors have concisely
presented the information you need to comprehend these majestic
apparitions that grace our night skies. No mathematical proficiency
is needed, in fact, this book doesn't contain a single equation!
Comets are cosmic Rosetta stones, bridging our current knowledge by
digging back to the earliest days of our Solar Systems. How did
life arise on Earth? Did comets play a significant role in bringing
water and the necessary organic matter to our early Earth? How
about the dinosaurs? Were they driven to extinction by a cometary
impact 66 million years ago? Comets may be both the enablers and
destroyers of life on Earth as we know it. These are some of the
tantalizing questions discussed here. If you so desire, steps are
given to join the ranks of amateur comet hunters. Astronomy is one
of the last sciences where amateurs play a significant role. Your
reward for discovery? A comet officially bearing your name in the
history books! The next Great Comet is on its way, we just do not
know when it will arrive. Armed with this book, you will be ready
to enjoy this unforgettable event.
Combinatorial Kalman filters are a standard tool today for pattern
recognition and charged particle reconstruction in high energy
physics. In this thesis the implementation of the track finding
software for the Belle II experiment and first studies on early
Belle II data are presented. The track finding algorithm exploits
novel concepts such as multivariate track quality estimates to form
charged trajectory hypotheses combining information from the Belle
II central drift chamber with the inner vertex sub-detectors. The
eventual track candidates show an improvement in resolution on the
parameters describing their spatial and momentum properties by up
to a factor of seven over the former legacy implementation. The
second part of the thesis documents a novel way to determine the
collision event null time T0 and the implementation of optimisation
steps in the online reconstruction code, which proved crucial in
overcoming the high level trigger limitations.
In two volumes, this book presents a detailed, systematic treatment
of electromagnetics with application to the propagation of
transient electromagnetic fields (including ultrawideband signals
and ultrashort pulses) in dispersive attenuative media. The
development in this expanded, updated, and reorganized new edition
is mathematically rigorous, progressing from classical theory to
the asymptotic description of pulsed wave fields in Debye and
Lorentz model dielectrics, Drude model conductors, and composite
model semiconductors. It will be of use to researchers as a
resource on electromagnetic radiation and wave propagation theory
with applications to ground and foliage penetrating radar, medical
imaging, communications, and safety issues associated with
ultrawideband pulsed fields. With meaningful exercises, and an
authoritative selection of topics, it can also be used as a
textbook to prepare graduate students for research. Volume 2
presents a detailed asymptotic description of plane wave pulse
propagation in dielectric, conducting, and semiconducting materials
as described by the classical Lorentz model of dielectric
resonance, the Rocard-Powles-Debye model of orientational
polarization, and the Drude model of metals. The rigorous
description of the signal velocity of a pulse in a dispersive
material is presented in connection with the question of
superluminal pulse propagation. The second edition contains new
material on the effects of spatial dispersion on precursor
formation, and pulse transmission into a dispersive half space and
into multilayered media. Volume 1 covers spectral representations
in temporally dispersive media.
This book deals with the practice of Optical Radiation Measurements
with introductory material to introduce the topics discussed. It
will be most useful for students, scientists and engineers working
in any academic, industrial or governmental projects related to
optical radiation. The book contains chapters that treat in detail
the procedures and techniques for the characterization of both
sources and detectors to the highest degree of accuracy and
reliability. It has a chapter devoted specifically to optical
measurements of laser sources and fiberoptics for communication and
a chapter devoted to uncertainty in measurement and its treatment
with real examples of optical measurements. The book contains
introductory materials that will allow a newcomer to radiometry to
develop the expertise to perform exacting and accurate measurement.
The authors stress the various causes of uncertainty in each phase
of a measurement and thus allow for users to arrive at a correct
assessment of their uncertainty of measurement in their particular
circumstance.
. Authors are from the Standards laboratories of AUSTRALIA, CANADA,
ENGLAND, GERMANY and the USA.
. Latest techniques and practice of laboratory measurements to
achieve the highest accuracy in the use of sources or
detectors.
. Unique illustrations of the apparatus and measurement
techniques.
. Practical measurement examples of calibration with full
uncertainty analysis.
. Comprehensive treatment of optical standards such as sources,
detectors and radiometers.
. A complete chapter on laser power measurements and standards for
fiber optic measurements
. A complete chapter on correlations in radiometry and practical
examples.
. A chapter devoted to diffraction effects in radiometry"
This thesis demonstrates a technology that enables pipetting-free
high-throughput screening (HTS) on a miniaturized platform,
eliminating the need for thousands of one-by-one pipetting and
conventional liquid handling systems. This platform enhances
accessibility to HTS and enables HTS to be used in small-to-medium
scale laboratories. In addition, it allows large-scale
combinatorial screening with a small number of valuable cells, such
as patients' primary cancer cells. This technique will have a high
impact for widespread use of HTS in the era of personalized
medicine. In this thesis, the author firstly describes the need and
concept of 'partipetting' for pipetting-free HTS platform. It is
realized by the one-step pipetting and self-assembly of encoded
drug-laden microparticles (DLPs) on the microwells. Next, the
technical implementations required for the platform demonstration
are described. It includes preparation of encoded DLPs, plastic
chip fabrication, and realization of automated system. Lastly,
screening of sequential drug combinations using this platform is
demonstrated. This shows the potential of the proposed technology
for various applications.
This is an overview of single molecule physics, the study of both
equilibrium and non-equilibrium properties at the single molecule
level. It begins with an introduction to this fascinating science
and includes a chapter on how to build the most popular instrument
for single molecule biophysics, the total internal reflection
fluorescence (TIRF) microscope. It concludes with the Poisson
process approach to statistical mechanics, explaining how to relate
the process to diverse areas and see how data analysis and error
bars are integral parts of science.
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