الصفحة 12
الصفحة 12
Understanding Sleep and Dreaming
Although sleep has been the subject of serious study for several decades, there has not been available an integrated, introductory text for more than ten years. Understanding Sleep and Dreaming fills this need with complete coverage of all aspects of sleep, dreaming, and sleep disorders, and is comprehensible as well as comprehensive. In accessible language, this text reviews the basic physiological mechanisms of sleep and the intertwined psychological ramifications. Most important, it is up-to-date, containing the latest information on the influence of orexin/hypocretin, nocturnal eating syndrome, the local cell theory of sleep, the effects of sleep deprivation, and the advantages of delaying school start times for teenagers.
Understanding Risks and Uncertainties in Energy and Climate Policy : Multidisciplinary Methods and Tools for a Low Carbon Society
This book analyzes and seeks to consolidate the use of robust quantitative tools and qualitative methods for the design and assessment of energy and climate policies. In particular, it examines energy and climate policy performance and associated risks, as well as public acceptance and portfolio analysis in climate policy, and presents methods for evaluating the costs and benefits of flexible policy implementation as well as new framings for business and market actors. In turn, it discusses the development of alternative policy pathways and the identification of optimal switching points, drawing on concrete examples to do so. Lastly, it discusses climate change mitigation policies’ implications for the agricultural, food, building, transportation, service and manufacturing sectors.
Understanding Programming Languages
This book is about describing the meaning of programming languages. While a compiler or an interpreter offers a form of formal description of a language, it is not something that can be used as a basis for reasoning about that language nor can it serve as a definition of a programming language itself since this must allow a range of implementations. By writing a formal semantics of a language a designer can yield a far shorter description and tease out, analyse and record design choices.Early in the book the author introduces a simple notation, a meta-language, used to record descriptions of the semantics of languages. In a practical approach, he considers dozens of issues that arise in current programming languages and the key techniques that must be mastered in order to write the required formal semantic descriptions. The book concludes with a discussion of the eight key challenges: delimiting a language (concrete representation), delimiting the abstract content of a language, recording semantics (deterministic languages), operational semantics (non-determinism), context dependency, modelling sharing, modelling concurrency, and modelling exits.
Understanding Non-equilibrium Thermodynamics : Foundations, Applications, Frontiers
Our time is characterized by an explosion of information and by an accel- ation of knowledge. A book cannot compete with the huge amount of data available on the Web. However, to assimilate all this information, it is n- essary to structure our knowledge in a useful conceptual framework. The purpose of the present work is to provide such a structure for students and researchers interested by the current state of the art of non-equilibrium th- modynamics. The main features of the book are a concise and critical pres- tation of the basic ideas, illustrated by a series of examples, selected not only for their pedagogical value but also for the perspectives o?ered by recent technological advances. This book is aimed at students and researchers in physics, chemistry, engineering, material sciences, and biology. We have been guided by two apparently antagonistic objectives: gener- ity and simplicity. To make the book accessible to a large audience of n- specialists, we have decided about a simpli?ed but rigorous presentation. Emphasis is put on the underlying physical background without sacri?cing mathematical rigour, the several formalisms being illustrated by a list of - amplesandproblems.
Understanding Multimedia Documents
Understanding Multimedia Documents deals with issues of great interest to an expanding community of multimedia designers and professional users, such as teachers and information workers. Multimedia documents are increasingly used to communicate knowledge in the mass media and educational contexts. In order to improve their practice, designers, teachers, and other professionals interested in the use of multimedia documents must be aware of how multimedia documents impact students' perception, comprehension and use of information.
Understanding Intrusion Detection through Visualization
Presents Understanding Intrusion Detection through Visualization presents research on why false alarms are, and will remain a problem; then applies results from the field of information visualization to the problem of intrusion detection. This approach promises to enable the operator to identify false (and true) alarms, while aiding the operator to identify other operational characteristics of intrusion detection systems. This volume presents four different visualization approaches, mainly applied to data from web server access logs.
Understanding drugs markets : An analysis of medicines, regulations and pharmaceutical systems in the global south
Highlights the influence of the countries colonial and post-colonial history on their models for state regulation, production, and distribution, explores the determining role transnational actors as well as industries from the North but also and increasingly from the South play in influencing local pharmaceutical markets and looks at the behaviour of health care professionals and individuals. Stepping back, the authors then unpick the pharmaceuticalization process and the multiple regulations at stake by looking at the workings of, and linkages between, (biomedical health) pharmaceutical systems, (representatives of companies) industries, actors in private distribution, and consumer practices.
Understanding and Using Linear Programming
An introductory textbook of linear programming, written mainly for students of computer science and mathematics. Our guiding phrase is, "what every theoretical computer scientist should know about linear programming". The book is relatively concise, in order to allow the reader to focus on the basic ideas. For a number of topics commonly appearing in thicker books on the subject, we were seriously tempted to add them to the main text, but we decided to present them only very brie?y in a separate glossary. At the same time, we aim at covering the main results with complete proofs and in su?cient detail, in a way ready for presentation in class. One of the main focuses is applications of linear programming, both in practice and in theory.
Undergraduate Algebra
Undergraduate Algebra is a text for the standard undergraduate algebra course. It concentrates on the basic structures and results of algebra, discussing groups, rings, modules, fields, polynomials, finite fields, Galois Theory, and other topics. The author has also included a chapter on groups of matrices which is unique in a book at this level. Throughout the book, the author strikes a balance between abstraction and concrete results, which enhance each other. Illustrative examples accompany the general theory. Numerous exercises range from the computational to the theoretical, complementing results from the main text.
Underdetermination : An Essay on Evidence and the Limits of Natural Knowledge
Underdetermination. An Essay on Evidence and the Limits of Natural Knowledge is a wide-ranging study of the thesis that scientific theories are systematically "underdetermined" by the data they account for. This much-debated thesis is a thorn in the side of scientific realists and methodologists of science alike and of late has been vigorously attacked. After analyzing the epistemological and ontological ascpects of the controversy in detail, and reviewing pertinent logical facts and selected scientific cases, Bonk carefully examines the merits of arguments for and against the thesis. Along the way, he investigates methodological proposals and recent theories of confirmation, which promise to discriminate among observationally equivalent theories on evidential grounds. He explores sympathetically but critically W.V.Quine and H.Putnam’s arguments for the thesis, the relationship between indeterminacy and underdetermination, and possibilities for a conventionalist solution.
Unconventional Programming Paradigms ; International Workshop UPP 2004, Le Mont Saint Michel, France, September 15-17, 2004, Revised Selected and Invited Papers
Nowadays, developers have to face the proliferation of hardware and software environments, the increasing demands of the users, the growing number of p- grams and the sharing of information, competences and services thanks to the generalization ofdatabasesandcommunication networks. Aprogramisnomore a monolithic entity conceived, produced and?nalized before being used. A p- gram is now seen as an open and adaptive frame, which, for example, can - namically incorporate services not foreseen by the initial designer. These new needs call for new control structures and program interactions. Unconventionalapproachestoprogramminghavelongbeendevelopedinv-iousnichesandconstituteareservoirofalternativewaystofacetheprogramming languages crisis.
Uncertainty Reasoning for the Semantic Web I ; ISWC International Workshops, URSW 2005-2007, Revised Selected and Invited Papers
Represents the first comprehensive compilation of state-of-the-art research approaches to uncertainty reasoning in the context of the semantic Web, capturing different models of uncertainty and approaches to deductive as well as inductive reasoning with uncertain formal knowledge.
Uncertainty Forecasting in Engineering
Deals with uncertainty forecasting based on a fuzzy time series approach, including fuzzy random processes and artificial neural networks. A consideration of data and measurement uncertainty enhances forecasting in a wide range of applications, particularly in the fields of engineering, environmental science and civil engineering.Uncertain data are described by means of a new incremental fuzzy representation which permits a complete and accurate estimation of uncertainty.
Uncertainty and Surprise in Complex Systems : Questions on Working with the Unexpected
This book is the outcome of a discussion meeting of leading scholars and critical thinkers with expertise in complex systems sciences and leaders from a variety of organizations sponsored by the Prigogine Center at The University of Texas at Austin and the Plexus Institute to explore strategies for understanding uncertainty and surprise. Besides distributions to the conference it includes a key digest by the editors as well as a commentary by the late nobel laureat Ilya Prigogine, "Surprises in half of a century". The book is intended for researchers and scientists in complexity science as well as for a broad interdisciplinary audience of both practitioners and scholars. It will well serve those interested in the research issues and in the application of complexity science to physical and social systems.
Un anno intero sotto il cielo : Guida a 366 notti d’osservazioni = A whole year under the Sky : A guide to 366 nights of observations
There are 365 nights in a year (366 if leap) and for the amateur astronomer there are never two alike. The sky every night offers its own show that has as its protagonists thousands of objects such as stars, constellations, planets, nebulae, to be recognized one by one, to be admired and studied. Sir Patrick Moore - a famous British TV presenter, amateur astronomer and popularizer known throughout the world - wrote this book to suggest to the sky lover which objects of particular interest can be observed on each different night of the year. Easy to interpret star maps are proposed, while the text deals with physics, stars and their history, binary systems, galaxies, the Moon and planets: everything that the celestial vault offers the curious amateur astronomer.
UMTS Radio Network Planning : Mastering Cell Coupling for Capacity Optimization
Interference determines the performance of UMTS radio networks. In order to provide good coverage and high capacity, network operators need to control the effects and dynamics of interference coupling among users and cells. This is a major challenge in planning and optimizing UMTS radio networks. In this book establishes a concise system model, which describes interference coupling and its impact on the network. The system model enables an efficient analysis of radio network performance. It is also the basis for new automatic planning algorithms. Extensive computational experiments on realistic data demonstrate that the presented evaluation and optimization methods are well-suited tools for use in practice.
Ultraviolet and Soft X-Ray Free-Electron Lasers : Introduction to Physical Principles, Experimental Results, Technological Challenges
In the introduction accelerator-based light sources are considered and a comparison is made between free-electron lasers and conventional quantum lasers. The motion and radiation of relativistic electrons in undulator magnets is discussed. The principle of a low-gain free-electron laser is explained and the pendulum equations are introduced that characterize the electron dynamics in the field of a light wave. The differential equations of the high-gain FEL are derived from the Maxwell equations of electrodynamics. Analytical and numerical solutions of the FEL equations are presented and important FEL parameters are defined, such as gain length, FEL bandwidth and saturation power. A detailed numerical study of the all-important microbunching process is presented. The mechanism of Self Amplified Spontaneous Emission is described theoretically and illustrated with numerous experimental results. Three-dimensional effects such as betatron oscillations and optical diffraction are addressed and their impact on the FEL performance is analyzed.
Ultrathin magnetic structures II : Measurement techniques and novel magnetic properties
The ability to understand and control the unique properties of interfaces has created an entirely new field of magnetism, with profound impact in technology and serving as the basis for a revolution in electronics. Our understanding of the physics of magnetic nanostructures has also advanced significantly. This rapid development has generated a need for a comprehensive treatment that can serve as an introduction to the field for those entering it from diverse fields, but which will also serve as a timely overview for those already working in this area. The four-volume work "Ultra-Thin Magnetic Structures" aims to fulfill this dual need. The original two volumes – now available once more – are "An Introduction to the Electronic, Magnetic and Structural Properties" (Vol. I) and "Measurement Techniques and Novel Magnetic Properties" (this volume). Two new volumes, "Fundamentals of Nanomagnetism" and "Applications of Nanomagnetism," extend and complete this comprehensive work by presenting the foundations of spintronics.
Ultrathin magnetic structures I : An introduction to the electronic, magnetic and structural properties
The ability to understand and control the unique properties of interfaces has created an entirely new field of magnetism, with profound impact in technology and serving as the basis for a revolution in electronics. Understanding of the physics of magnetic nanostructures has also advanced significantly. This rapid development has generated a need for a comprehensive treatment that can serve as an introduction to the field for those entering it from diverse fields, but which will also serve as a timely overview for those already working in this area. The four-volume work "Ultra-Thin Magnetic Structures" aims to fulfill this dual need. The original two volumes – now available once more – are "An Introduction to the Electronic, Magnetic and Structural Properties" (this volume) and "Measurement Techniques and Novel Magnetic Properties." Two new volumes, "Fundamentals of Nanomagnetism" and "Applications of Nanomagnetism," extend and complete this comprehensive work by presenting the foundations of spintronics.
Ultrasonic ranging and object detection using arduino
This project aims to develop a novel method for recognizing the shape of an object located behind thin medium utilizing combination of ultrasonic sensor signal. This system is extensively designed so that it can recognize objects in front of the sensor. Once the object approach near ultrasonic sensor system will identify shapes of the objects. The sensor mounted on the servo dc motor and connected to Arduino. When it detects an object, it will take a photo using camera then send it to computer to process it using MATLAB to give close answer of what this thing.
