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Books > Science & Mathematics > Science: general issues > Scientific standards

Transmission Loss in Radio Propagation / II.; NBS Technical Note 12 (Hardcover): Kenneth Alva 1907- Norton Transmission Loss in Radio Propagation / II.; NBS Technical Note 12 (Hardcover)
Kenneth Alva 1907- Norton
R798 Discovery Miles 7 980 Ships in 18 - 22 working days
Microsensing Networks for Sustainable Cities (Paperback, Softcover reprint of the original 1st ed. 2016): Johannes Lambrechts,... Microsensing Networks for Sustainable Cities (Paperback, Softcover reprint of the original 1st ed. 2016)
Johannes Lambrechts, Saurabh Sinha
R2,669 Discovery Miles 26 690 Ships in 18 - 22 working days

This book explores the microsensing technologies and systems now available to monitor the quality of air and water within the urban environment and examines their role in the creation of sustainable cities against the background of the challenges posed by rapid urbanization. The opening section addresses the theoretical and conceptual background of microsensing networks. The coverage includes detailed description of microsensors, supported by design-specific equations, and clear explanation of the ways in which devices that harvest energy from ambient sources can detect and quantify pollution. The practical application of such systems in addressing environmental impacts within cities and in sustainable urban planning is then discussed with the aid of case studies in developing countries. The book will be of interest to all who wish to understand the benefits of microsensing networks in promoting sustainable cities through better delivery of information on health hazards and improved provision of data to environmental agencies and regulatory bodies in order to assist in monitoring, decision-making, and regulatory enforcement.

Observation of  _   _e Oscillation in the T2K Experiment (Paperback, Softcover reprint of the original 1st ed. 2016): Kei Ieki Observation of _ _e Oscillation in the T2K Experiment (Paperback, Softcover reprint of the original 1st ed. 2016)
Kei Ieki
R2,653 Discovery Miles 26 530 Ships in 18 - 22 working days

In this thesis the author contributes to the analysis of neutrino beam data collected between 2010 and 2013 to identify e events at the Super-Kamiokande detector. In particular, the author improves the pion-nucleus interaction uncertainty, which is one of the dominant systematic error sources in T2K neutrino oscillation measurement. In the thesis, the measurement of e oscillation in the T2K (Tokai to Kamioka) experiment is presented and a new constraint on CP is obtained. This measurement and the analysis establish, at greater than 5 significance, the observation of e oscillation for the first time in the world. Combining the T2K e oscillation measurement with the latest findings on oscillation parameters including the world average value of 13 from reactor experiments, the constraint on the value of CP at the 90% confidence level is obtained. This constraint on CP is an important step towards the discovery of CP violation in the lepton sector.

Quantifying Interactions of Biomolecules with Inorganic Surfaces (Paperback, Softcover reprint of the original 1st ed. 2017):... Quantifying Interactions of Biomolecules with Inorganic Surfaces (Paperback, Softcover reprint of the original 1st ed. 2017)
Abhijeet Patra
R2,922 Discovery Miles 29 220 Ships in 18 - 22 working days

This thesis demonstrates the adaptation of existing techniques and principles towards enabling clean and precise measurements of biomolecules interacting with inorganic surfaces. In particular, it includes real-time measurement of serum proteins interacting with engineered nanomaterial. Making meaningful and unambiguous measurements has been an evolving problem in the field of biology and its various allied domains, primarily due to the complex nature of experiments and the large number of possible interferants. The subsequent quantification of interactions between biomolecules and inorganic surfaces solves pressing problems in the rapidly developing fields of lipidomics and nanomedicine.

Machine Tool Metrology - An Industrial Handbook (Paperback, Softcover reprint of the original 1st ed. 2016): Graham T. Smith Machine Tool Metrology - An Industrial Handbook (Paperback, Softcover reprint of the original 1st ed. 2016)
Graham T. Smith
R4,122 Discovery Miles 41 220 Ships in 18 - 22 working days

Maximizing reader insights into the key scientific disciplines of Machine Tool Metrology, this text will prove useful for the industrial-practitioner and those interested in the operation of machine tools. Within this current level of industrial-content, this book incorporates significant usage of the existing published literature and valid information obtained from a wide-spectrum of manufacturers of plant, equipment and instrumentation before putting forward novel ideas and methodologies. Providing easy to understand bullet points and lucid descriptions of metrological and calibration subjects, this book aids reader understanding of the topics discussed whilst adding a voluminous-amount of footnotes utilised throughout all of the chapters, which adds some additional detail to the subject. Featuring an extensive amount of photographic-support, this book will serve as a key reference text for all those involved in the field.

Research Methodology - The Aims, Practices and Ethics of Science (Paperback, Softcover reprint of the original 1st ed. 2016):... Research Methodology - The Aims, Practices and Ethics of Science (Paperback, Softcover reprint of the original 1st ed. 2016)
Peter Pruzan
R1,986 Discovery Miles 19 860 Ships in 18 - 22 working days

This book is an in-depth guide to effective scientific research. Ranging from the philosophical to the practical, it explains at the outset what science can - and can't - achieve, and discusses its relationship to mathematics and laws. The author then pays extensive attention to the scientific method, including experimental design, verification, uncertainty and statistics. A major aim of the book is to help young scientists reflect upon the deeper aims of their work and make the best use of their talents in contributing to progress. To this end, it also includes sections on planning research, on presenting one's findings in writing, as well as on ethics and the responsibilities of scientists.

Scientific Integrity 4e (Paperback, 4 New Edition): FL Macrina Scientific Integrity 4e (Paperback, 4 New Edition)
FL Macrina
R2,079 Discovery Miles 20 790 Ships in 18 - 22 working days

Allegations of fraud, conflict of interest, and other ethical dilemmas have troubled the scientific community. With increasing frequency, graduate programs in the biomedical sciences are offering formalized training in the principles of responsible scientific conduct. Scientific Integrity, Fourth Edition covers essential topics related to the conduct of scientific investigation, such as guidelines, policies, standards, and codes and contains highly relevant interactive case studies. This textbook covers broad areas of scientific integrity and meets the needs of students and scientists working in the biomedical sciences. Newly updated case studies that parallel the material presented in the chapters are included to illustrate the diversity of issues that have been identified under the umbrella of scientific integrity. All chapters have been thoroughly updated, especially with regard to the new technologies in data discovery and sharing, and the latest NIH and international best practices guidelines. This title is published by the American Society of Microbiology Press and distributed by Taylor and Francis in rest of world territories.

World in the Balance - The Historic Quest for an Absolute System of Measurement (Paperback): Robert P. Crease World in the Balance - The Historic Quest for an Absolute System of Measurement (Paperback)
Robert P. Crease
R430 Discovery Miles 4 300 Ships in 10 - 15 working days

Millions of transactions each day depend on a reliable network of weights and measures. But achieving such a network was anything but easy, as Robert P. Crease, physicist and philosopher, demonstrates in this endlessly fascinating, always entertaining look at just how this international system evolved. From the link between musical pitch and distance in the dynasties of ancient China and the use of figurines to measure gold in West Africa to the creation of the French metric and British imperial systems, Crease takes readers along on one of history’s greatest philosophical and scientific adventures.

Carbon at High Temperatures (Paperback, Softcover reprint of the original 1st ed. 2015): Alexander Savvatimskiy Carbon at High Temperatures (Paperback, Softcover reprint of the original 1st ed. 2015)
Alexander Savvatimskiy
R3,303 Discovery Miles 33 030 Ships in 18 - 22 working days

This book deals with the properties and behavior of carbon at high temperatures. It presents new methods and new ways to obtain the liquid phase of carbon. Melting of graphite and the properties of liquid carbon are presented under stationary heat and pulse methods. Metal like properties of molten graphite at high initial density are indicated. A new possible transition of liquid carbon from metal to nonmetal behavior much above the melting point is mentioned. Methodical questions of pulse heating, in particular the role of pinch-pressure in receiving a liquid state of carbon, are discussed. The reader finds evidence about the necessity of applying high pressure (higher than 100 bar) to melt graphite (melting temperature 4800+/-100 K). The reader can verify the advantage of volume pulse electrical heating before surface laser heating to study the physical properties of carbon, including enthalpy, heat capacity, electrical resistivity and temperature. The advantages of fast heating of graphite by pulsed electric current during a few microseconds are shown. The data obtained for the heat capacity of liquid carbon under constant pressure and constant volume were used to estimate the behavior at temperatures much higher 5000 K.

Introduction to Quantum Metrology - Quantum Standards and Instrumentation (Paperback, Softcover reprint of the original 1st ed.... Introduction to Quantum Metrology - Quantum Standards and Instrumentation (Paperback, Softcover reprint of the original 1st ed. 2015)
Waldemar Nawrocki
R4,293 Discovery Miles 42 930 Ships in 18 - 22 working days

This book presents the theory of quantum effects used in metrology and results of the author’s own research in the field of quantum electronics. The book provides also quantum measurement standards used in many branches of metrology for electrical quantities, mass, length, time and frequency. This book represents the first comprehensive survey of quantum metrology problems. As a scientific survey, it propagates a new approach to metrology with more emphasis on its connection with physics. This is of importance for the constantly developing technologies and nanotechnologies in particular. Providing a presentation of practical applications of the effects used in quantum metrology for the construction of quantum standards and sensitive electronic components, the book is useful for a wide audience of physicists and metrologists in the broad sense of both terms. In 2014 a new system of units, the so called Quantum SI, is introduced. This book helps to understand and approve the new system to both technology and academic community.

Studying Complex Surface Dynamical Systems Using Helium-3 Spin-Echo Spectroscopy (Paperback, Softcover reprint of the original... Studying Complex Surface Dynamical Systems Using Helium-3 Spin-Echo Spectroscopy (Paperback, Softcover reprint of the original 1st ed. 2014)
Barbara A. J. Lechner
R3,102 Discovery Miles 31 020 Ships in 18 - 22 working days

Chemical reactions and growth processes on surfaces depend on the diffusion and re-orientation of the adsorbate molecules. A fundamental understanding of the forces guiding surface motion is thus of utmost importance for the advancement of many fields of science and technology. To date, our understanding of the principles underlying surface dynamics remains extremely limited, due to the difficulties involved in measuring these processes experimentally. The helium-3 spin-echo (HeSE) technique is uniquely capable of probing such surface dynamical phenomena. The present thesis extends the field of application of HeSE from atomic and small molecular systems to more complex systems. Improvements to the supersonic helium beam source, a key component of the spectrometer, as well as a detailed investigation of a range of five-membered aromatic adsorbate species are presented. The thesis provides a comprehensive description of many aspects of the HeSE method - instrumentation, measurement and data analysis - and as such offers a valuable introduction for newcomers to the field.

Signal Transforms in Dynamic Measurements (Paperback, Softcover reprint of the original 1st ed. 2015): Edward Layer, Krzysztof... Signal Transforms in Dynamic Measurements (Paperback, Softcover reprint of the original 1st ed. 2015)
Edward Layer, Krzysztof Tomczyk
R2,656 Discovery Miles 26 560 Ships in 18 - 22 working days

This book is devoted to the analysis of measurement signals which requires specific mathematical operations like Convolution, Deconvolution, Laplace, Fourier, Hilbert, Wavelet or Z transform which are all presented in the present book. The different problems refer to the modulation of signals, filtration of disturbance as well as to the orthogonal signals and their use in digital form for the measurement of current, voltage, power and frequency are also widely discussed. All the topics covered in this book are presented in detail and illustrated by means of examples in MathCad and LabVIEW. This book provides a useful source for researchers, scientists and engineers who in their daily work are required to deal with problems of measurement and signal processing and can also be helpful to undergraduate students of electrical engineering.

General Theory of Light Propagation and Imaging Through the Atmosphere (Paperback, Softcover reprint of the original 1st ed.... General Theory of Light Propagation and Imaging Through the Atmosphere (Paperback, Softcover reprint of the original 1st ed. 2016)
T. Stewart McKechnie
R5,019 Discovery Miles 50 190 Ships in 18 - 22 working days

This book lays out a new, general theory of light propagation and imaging through Earth's turbulent atmosphere. Current theory is based on the - now widely doubted - assumption of Kolmogorov turbulence. The new theory is based on a generalized atmosphere, the turbulence characteristics of which can be established, as needed, from readily measurable properties of point-object, or star, images. The pessimistic resolution predictions of Kolmogorov theory led to lax optical tolerance prescriptions for large ground-based astronomical telescopes which were widely adhered to in the 1970s and 1980s. Around 1990, however, it became clear that much better resolution was actually possible, and Kolmogorov tolerance prescriptions were promptly abandoned. Most large telescopes built before 1990 have had their optics upgraded (e.g., the UKIRT instrument) and now achieve, without adaptive optics (AO), almost an order of magnitude better resolution than before. As well as providing a more comprehensive and precise understanding of imaging through the atmosphere with large telescopes (both with and without AO), the new general theory also finds applications in the areas of laser communications and high-energy laser beam propagation.

Plug In Electric Vehicles in Smart Grids - Integration Techniques (Paperback, Softcover reprint of the original 1st ed. 2015):... Plug In Electric Vehicles in Smart Grids - Integration Techniques (Paperback, Softcover reprint of the original 1st ed. 2015)
Sumedha Rajakaruna, Farhad Shahnia, Arindam Ghosh
R3,557 Discovery Miles 35 570 Ships in 18 - 22 working days

This book focuses on the state of the art in worldwide research on applying optimization approaches to intelligently control charging and discharging of batteries of Plug-in Electric Vehicles (PEVs) in smart grids. Network constraints, cost considerations, the number and penetration level of PEVs, utilization of PEVs by their owners, ancillary services, load forecasting, risk analysis, etc. are all different criteria considered by the researchers in developing mathematical based equations which represent the presence of PEVs in electric networks. Different objective functions can be defined and different optimization methods can be utilized to coordinate the performance of PEVs in smart grids. This book will be an excellent resource for anyone interested in grasping the current state of applying different optimization techniques and approaches that can manage the presence of PEVs in smart grids.

Small-Angle Scattering from Confined and Interfacial Fluids - Applications to Energy Storage and Environmental Science... Small-Angle Scattering from Confined and Interfacial Fluids - Applications to Energy Storage and Environmental Science (Paperback, Softcover reprint of the original 1st ed. 2016)
Yuri B. Melnichenko
R3,494 Discovery Miles 34 940 Ships in 18 - 22 working days

This book examines the meso- and nanoscopic aspects of fluid adsorption in porous solids using a non-invasive method of small angle neutron scattering (SANS) and small angle x-ray scattering (SAXS). Starting with a brief summary of the basic assumptions and results of the theory of small-angle scattering from porous media, the author focuses on the practical aspects and methodology of the ambient and high pressure SANS and SAXS experiments and corresponding data analysis. It is illustrated with results of studies of the vapor and supercritical fluid adsorption in porous materials published during the last decade, obtained both for man-made materials (e.g. porous fractal silica, Vycor glass, activated carbon) and geological samples (e.g. sandstones, shales and coal). In order to serve the needs of broad readership, the results are presented in the relevant context (e.g. petroleum exploration, anthropogenic carbon capture and sequestration, ion adsorption in supercapacitors, hydrogen storage, etc.).

Laboratory Micro-X-Ray Fluorescence Spectroscopy - Instrumentation and Applications (Paperback, Softcover reprint of the... Laboratory Micro-X-Ray Fluorescence Spectroscopy - Instrumentation and Applications (Paperback, Softcover reprint of the original 1st ed. 2014)
Michael Haschke
R4,958 Discovery Miles 49 580 Ships in 18 - 22 working days

Micro-X-ray fluorescence offers the possibility for a position- sensitive and non-destructive analysis that can be used for the analysis of non-homogeneous materials and layer systems. This analytical technique has shown a dynamic development in the last 15 years and is used for the analysis of small particles, inclusions, of elemental distributions for a wide range of different applications both in research and quality control. The first experiments were performed on synchrotrons but there is a requirement for laboratory instruments which offers a fast and immediate access for analytical results. The book discuss the main components of a µ-XRF instrument and the different measurement modes, it gives an overview about the various instruments types, considers the special requirements for quantification of non-homogeneous materials and presents a wide range of application for single point and multi-point analysis as well as for distribution analysis in one, two and three dimensions.

Pulse Voltammetry in Physical Electrochemistry and Electroanalysis - Theory and Applications (Paperback, Softcover reprint of... Pulse Voltammetry in Physical Electrochemistry and Electroanalysis - Theory and Applications (Paperback, Softcover reprint of the original 1st ed. 2016)
Angela Molina, Joaquin Gonzalez
R2,823 Discovery Miles 28 230 Ships in 18 - 22 working days

For the first time, the authors provide a comprehensive and consistent presentation of all techniques available in this field. They rigorously analyze the behavior of different electrochemical single and multipotential step techniques for electrodes of different geometries and sizes under transient and stationary conditions. The effects of these electrode features in studies of various electrochemical systems (solution systems, electroactive monolayers, and liquid-liquid interfaces) are discussed. Explicit analytical expressions for the current-potential responses are given for all available cases. Applications of each technique are outlined for the elucidation of reaction mechanisms. Coverage is comprehensive: normal pulse voltammetry, double differential pulse voltammetry, reverse pulse voltammetry and other triple and multipulse techniques, such as staircase voltammetry, differential staircase voltammetry, differential staircase voltcoulommetry, cyclic voltammetry, square wave voltammetry and square wave voltcoulommetry.

Electron Lenses for Super-Colliders (Paperback, Softcover reprint of the original 1st ed. 2016): Vladimir D. Shiltsev Electron Lenses for Super-Colliders (Paperback, Softcover reprint of the original 1st ed. 2016)
Vladimir D. Shiltsev
R1,899 Discovery Miles 18 990 Ships in 18 - 22 working days

This book provides a comprehensive overview of the operating principles and technology of electron lenses in supercolliders. Electron lenses are a novel instrument for high energy particle accelerators, particularly for the energy-frontier superconducting hadron colliders, including the Tevatron, RHIC, LHC and future very large hadron colliders. After reviewing the issues surrounding beam dynamics in supercolliders, the book offers an introduction to the electron lens method and its application. Further chapters describe the technology behind the electron lenses which have recently been proposed, built and employed for compensation of beam-beam effects and for collimation of high-energy high-intensity beams, for compensation of space-charge effects and several other applications in accelerators. The book will be an invaluable resource for those involved in the design, construction and operation of the next generation of hadron colliders.

Search for Charginos Nearly Mass-Degenerate with the Lightest Neutralino - Based on a Disappearing-Track Signature in pp... Search for Charginos Nearly Mass-Degenerate with the Lightest Neutralino - Based on a Disappearing-Track Signature in pp Collisions at s = 8 TeV (Paperback, Softcover reprint of the original 1st ed. 2016)
Shingo Kazama
R3,039 Discovery Miles 30 390 Ships in 18 - 22 working days

In this book, the anomaly mediated supersymmetry breaking (AMSB) model is explored by searching for charged winos with their subsequent decays collected with the ATLAS detector at the Large Hadron Collider (LHC). The author develops a new method, called "re-tracking," to detect charged winos that decay before reaching the Semiconductor Tracker (SCT) detector. Because the nominal tracking algorithm at the ATLAS experiment requires at least seven successive hits in the inner tracking system, the sensitivity to charged winos having a fraction of a nanosecond in the past analysis was therefore limited. However, re-tracking requires a minimum of three pixel hits and provides a fully efficient tracking capability for charged winos traversing the pixel detector, resulting in around about 100 times greater efficiency for charged winos with a lifetime ~0.2 ns longer than that in past searches. Signal topology is characterized by a jet with large transverse momentum (pT), large missing transverse energy, and a high-pT disappearing track. There are three types of back ground tracks: interacting hadron tracks, charged leptons, and tracks with mismeasured pT. A background estimation based on the Monte Carlo (MC) simulation suffers from large uncertainties due to poor statistics and has difficulty simulating the properties of background tracks. Therefore, a data-driven approach has been developed by the author of the book to estimate the background track-pT spectrum. No significant excess above the background expectation is observed for candidate tracks with large transverse momentum, and constraints on the AMSB model are obtained. The author shows that in the AMSB model, a charged wino mass below 270 GeV is excluded at 95 % confidence level, which also directly constrains the mass of wino dark matter.

High-Redshift Galaxies - Light from the Early Universe (Paperback, Softcover reprint of the original 1st ed. 2009): Immo... High-Redshift Galaxies - Light from the Early Universe (Paperback, Softcover reprint of the original 1st ed. 2009)
Immo Appenzeller
R2,934 Discovery Miles 29 340 Ships in 18 - 22 working days

The high-redshift galaxies became a distinct research ?eld during the ?nal decade of the20thcentury. AtthattimetheLyman-breaktechniquemadeitpossibletoidentify signi?cant samples of such objects, and the new generation of 8 to 10-m telescopes resulted in ?rst good spectroscopic data. Today the high-redshift galaxies have developed into one of the important topics of astrophysics, accounting for about 5-10% of the publications in the major scienti?c journals devoted to astronomy. Because high-redshift galaxies is a rapidly developing ?eld and since new results are published constantly, writing a book on this topic is challenging. On the other hand, in view of the large amount of individual results now in the literature, and in view of the still growing interest in this topic, it appears worthwhile to summarize and evaluate the available data and to provide an introduction for those who wish to enter this ?eld, or who, for various reasons, might be interested in its results. The end of the ?rst decade of the 21st century appears to be a good point in time to attempt such a summary. The current generation of ground-based 8 to 10-m - optical telescopes, the Hubble Space Telescope, and the most important large radio telescopes have by now been in operation since about one or two decades. Although these instruments will continue to produce important scienti?c results for some time to come, many of the initial programs exploiting their unique new possibilities have been completed.

Ellipsometry at the Nanoscale (Paperback, Softcover reprint of the original 1st ed. 2013): Maria Losurdo, Kurt Hingerl Ellipsometry at the Nanoscale (Paperback, Softcover reprint of the original 1st ed. 2013)
Maria Losurdo, Kurt Hingerl
R7,828 Discovery Miles 78 280 Ships in 18 - 22 working days

This book presents and introduces ellipsometry in nanoscience and nanotechnology making a bridge between the classical and nanoscale optical behaviour of materials. It delineates the role of the non-destructive and non-invasive optical diagnostics of ellipsometry in improving science and technology of nanomaterials and related processes by illustrating its exploitation, ranging from fundamental studies of the physics and chemistry of nanostructures to the ultimate goal of turnkey manufacturing control. This book is written for a broad readership: materials scientists, researchers, engineers, as well as students and nanotechnology operators who want to deepen their knowledge about both basics and applications of ellipsometry to nanoscale phenomena. It starts as a general introduction for people curious to enter the fields of ellipsometry and polarimetry applied to nanomaterials and progresses to articles by experts on specific fields that span from plasmonics, optics, to semiconductors and flexible electronics. The core belief reflected in this book is that ellipsometry applied at the nanoscale offers new ways of addressing many current needs. The book also explores forward-looking potential applications.

Experiments and Numerical Simulations of Diluted Spray Turbulent Combustion - Proceedings of the 1st International Workshop on... Experiments and Numerical Simulations of Diluted Spray Turbulent Combustion - Proceedings of the 1st International Workshop on Turbulent Spray Combustion (Paperback, Softcover reprint of the original 1st ed. 2011)
Bart Merci, Dirk Roekaerts, Amsini Sadiki
R5,143 Discovery Miles 51 430 Ships in 18 - 22 working days

This book reflects the outcome of the 1st International Workshop on Turbulent Spray Combustion held in 2009 in Corsica (France). The focus is on reporting the progress of experimental and numerical techniques in two-phase flows, with emphasis on spray combustion. The motivation for studies in this area is that knowledge of the dominant phenomena and their interactions in such flow systems is essential for the development of predictive models and their use in combustor and gas turbine design. This necessitates the development of accurate experimental methods and numerical modelling techniques. The workshop aimed at providing an opportunity for experts and young researchers to present the state-of-the-art, discuss new developments or techniques and exchange ideas in the areas of experimentations, modelling and simulation of reactive multiphase flows. The first two papers reflect the contents of the invited lectures, given by experts in the field of turbulent spray combustion. The first concerns computational issues, while the second deals with experiments. These lectures initiated very interesting and interactive discussions among the researchers, further pursued in contributed poster presentations. Contributions 3 and 4 focus on some aspects of the impact of the interaction between fuel evaporation and combustion on spray combustion in the context of gas turbines, while the final article deals with the interaction between evaporation and turbulence.

Model of the Response Function of CUORE Bolometers (Paperback, Softcover reprint of the original 1st ed. 2011): Marco Vignati Model of the Response Function of CUORE Bolometers (Paperback, Softcover reprint of the original 1st ed. 2011)
Marco Vignati
R1,408 Discovery Miles 14 080 Ships in 18 - 22 working days

Large mass bolometers are used in particle physics experiments to search for rare processes, like neutrinoless double beta decay and dark matter interactions. In the next years the CUORE experiment (a 1 Ton detector composed by 1000 crystals of TeO2 operated as bolometers in a large cryostat at 10mK) will be the particle physics experiment with the highest chance of discovering the Majorana neutrino, a long standing and yet fundamental question of particle physics. The study presented in this book was performed on the bolometers of the CUORE experiment. The response function of these detectors is not linear in the energy range of interest, and it changes with the operating temperature, worsening the performances. The nonlinearity appeared to be dominated by the thermistor and the biasing circuit used to read the bolometer, and was modeled using few measurable parameters. A method to obtain a linear response is the result of this work. It allows a great improvement of the detector operation and data analysis. With a foreword by Fernando Ferroni.

Probing Cosmic Dark Matter and Dark Energy with Weak Gravitational Lensing Statistics (Paperback, Softcover reprint of the... Probing Cosmic Dark Matter and Dark Energy with Weak Gravitational Lensing Statistics (Paperback, Softcover reprint of the original 1st ed. 2016)
Masato Shirasaki
R2,653 Discovery Miles 26 530 Ships in 18 - 22 working days

In this book the applicability and the utility of two statistical approaches for understanding dark energy and dark matter with gravitational lensing measurement are introduced. For cosmological constraints on the nature of dark energy, morphological statistics called Minkowski functionals (MFs) to extract the non-Gaussian information of gravitational lensing are studied. Measuring lensing MFs from the Canada-France-Hawaii Telescope Lensing survey (CFHTLenS), the author clearly shows that MFs can be powerful statistics beyond the conventional approach with the two-point correlation function. Combined with the two-point correlation function, MFs can constrain the equation of state of dark energy with a precision level of approximately 3-4 % in upcoming surveys with sky coverage of 20,000 square degrees. On the topic of dark matter, the author studied the cross-correlation of gravitational lensing and the extragalactic gamma-ray background (EGB). Dark matter annihilation is among the potential contributors to the EGB. The cross-correlation is a powerful probe of signatures of dark matter annihilation, because both cosmic shear and gamma-ray emission originate directly from the same dark matter distribution in the universe. The first measurement of the cross-correlation using a real data set obtained from CFHTLenS and the Fermi Large Area Telescope was performed. Comparing the result with theoretical predictions, an independent constraint was placed on dark matter annihilation. Future lensing surveys will be useful to constrain on the canonical value of annihilation cross section for a wide range of mass of dark matter annihilation. Future lensing surveys will be useful to constrain on the canonical value of annihilation cross section for a wide range of mass of dark matter.

Measurement of Neutrino Interactions and Three Flavor Neutrino Oscillations in the T2K Experiment (Paperback, Softcover reprint... Measurement of Neutrino Interactions and Three Flavor Neutrino Oscillations in the T2K Experiment (Paperback, Softcover reprint of the original 1st ed. 2016)
Tatsuya Kikawa
R2,111 Discovery Miles 21 110 Ships in 18 - 22 working days

This book is based on the author's work in the T2K long-baseline neutrino oscillation experiment, in which neutrinos are generated by a proton beam and are detected by near and far neutrino detectors. In order to achieve the precise measurement of the neutrino oscillation, an accurate understanding of the neutrino beam and the neutrino interaction is essential. Thus, the author measured the neutrino beam properties and the neutrino interaction cross sections using a near neutrino detector called INGRID and promoted a better understanding of them. Then, the author performed a neutrino oscillation analysis using the neutrino beam and neutrino interaction models verified by the INGRID measurements. As a result, some values of the neutrino CP phase are disfavored at the 90% confidence level. If the measurement precision is further improved, we may be able to discover the finite CP phase which involves the CP violation. Thus, this result is an important step towards the discovery of CP violation in the lepton sector, which may be the key to understanding the origin of the matter-antimatter asymmetry in the universe.

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