Xem 1-20 trên 448 kết quả Applied fields
  • Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí hóa hoc quốc tế đề tài : Laudation to Prof. Dr. Hans-Toni Ratte–towards conceptual, theory-based ecological science and its transfer to the applied field of ecotoxicology

    pdf8p dauphong11 06-02-2012 15 3   Download

  • Leading experts review the research on resilience and represent the diverse perspectives and opinions found among both scientists and practitioners in the field. Although the chapters are written to the standards expected by researchers, they are equally useful for program developers and others in applied fields seeking science-based information on the topic. This book is a unique resource in keeping with the growing interest in resilience both in research and interventions.

    pdf302p banhkem0908 24-11-2012 14 2   Download

  • The book is divided into four main parts: key issues in researching language learning/teaching, data collection, data analysis and writing up research. Both qualitative and quantitative methodologies are discussed, alongside popular mixed-methods approaches, such as triangulated studies, thus covering many of the methods commonly employed in the field.

    pdf336p nhatdang01 27-01-2011 214 127   Download

  • Based on a streamlined presentation of the author’s successful work, An Introduction to Frames and Riesz Bases, this book develops frame theory as part of a dialogue between mathematicians and engineers. Newly added sections on applications will help mathematically oriented readers to see where frames are used in practice and engineers to discover the mathematical background for applications in their field. The book presents basic results in an accessible way and includes extensive exercises.

    pdf326p kennybibo 14-07-2012 25 6   Download

  • The fundamental concepts, ideas and methods underlying all vibration phenomena are explained and illustrated in this book. The principles of classical linear vibration theory are brought together with vibration measurement, signal processing and random vibration for application to vibration problems in all areas of engineering. The book pays particular attention to the dynamics of structures, but the methods of analysis presented here apply readily to many other fields.

    pdf815p camchuong_1 04-12-2012 26 5   Download

  • This book is intended to be a practical guide to the application of pyrolysistechniques to various samples and sample types. To that end, general and theoreticalconsiderations, including instrumentation and degradation mechanisms, have beenconsolidated in the first two chapters. The balance of the book describes the use ofpyrolysis as a tool in specific fields.

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  • Conditional Random Fields (CRFs) have been applied with considerable success to a number of natural language processing tasks. However, these tasks have mostly involved very small label sets. When deployed on tasks with larger label sets, the requirements for computational resources mean that training becomes intractable. This paper describes a method for training CRFs on such tasks, using error correcting output codes (ECOC). A number of CRFs are independently trained on the separate binary labelling tasks of distinguishing between a subset of the labels and its complement. ...

    pdf8p bunbo_1 17-04-2013 17 3   Download

  • This paper presents techniques to apply semi-CRFs to Named Entity Recognition tasks with a tractable computational cost. Our framework can handle an NER task that has long named entities and many labels which increase the computational cost. To reduce the computational cost, we propose two techniques: the first is the use of feature forests, which enables us to pack feature-equivalent states, and the second is the introduction of a filtering process which significantly reduces the number of candidate states. ...

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  • Recent work on Conditional Random Fields (CRFs) has demonstrated the need for regularisation to counter the tendency of these models to overfit. The standard approach to regularising CRFs involves a prior distribution over the model parameters, typically requiring search over a hyperparameter space. In this paper we address the overfitting problem from a different perspective, by factoring the CRF distribution into a weighted product of individual “expert” CRF distributions. We call this model a logarithmic opinion pool (LOP) of CRFs (LOP-CRFs).

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  • This paper describes discriminative language modeling for a large vocabulary speech recognition task. We contrast two parameter estimation methods: the perceptron algorithm, and a method based on conditional random fields (CRFs). The models are encoded as deterministic weighted finite state automata, and are applied by intersecting the automata with word-lattices that are the output from a baseline recognizer. The perceptron algorithm has the benefit of automatically selecting a relatively small feature set in just a couple of passes over the training data. ...

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  • With advantages such as high strength, high stiffness, high chemical resistance, light weight…composite tubes are widely applied in urban construction and petroleum industry. In this report, the authors used the displacement method to study the mechanical behavior (stress, strain…) of an infinite hollow cylinder made of composite material under unsteady, axisymmetric plane temperature field. In the numerical calculations, we mainly studied the influence of time and volume ratio of the particle on the displacement and thermoelastic stress of a cylinder made of Titanium /PVC composite.

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  • The difficulties encountered in the field of machine translation are many. The areas of contact between meaning and the syntactic vehicle expressing it are refractory and pose a problem for linguistic computational research. An applied radical semantics offers some operational solutions for ambiguous syntactic situations. Subject identification within a twoplace predicate structure is presented as an illustration of the resolving power of applied radical semantics.

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  • This paper presents a chunking-based discriminative approach to full parsing. We convert the task of full parsing into a series of chunking tasks and apply a conditional random field (CRF) model to each level of chunking. The probability of an entire parse tree is computed as the product of the probabilities of individual chunking results. The parsing is performed in a bottom-up manner and the best derivation is efficiently obtained by using a depthfirst search algorithm. Experimental results demonstrate that this simple parsing framework produces a fast and reasonably accurate parser.

    pdf9p bunthai_1 06-05-2013 18 1   Download

  • Introduction waves and phasors, transmission lines, vector analysis, electrostatics, magnetostatics, maxwell’s equations for time-varying fields, plane-wave propagation, wave reflection and transmission,... As the main contents of the document "Fundamentals of Applied Electromagnetics 6e by Fawwaz T. Ulaby, Eric Michielssen, and Umberto Ravaioli". Invite you to consult.

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  • Biotechnology is the scientific field of studying and applying the most efficient methods and techniques to get useful end-products for the human society by using viable micro-organisms, cells, and tissues of plants or animals, or even certain functional components of their organisms, that are grown in fully controlled conditions to maximize their specific metabolism inside fully automatic bioreactors.

    pdf288p ktct_1669 09-05-2012 165 47   Download

  • This fully revised second edition provides an exciting interdisciplinary journey through the rapidly changing landscape of discovery in microbial biotechnology. An ideal text for courses in applied microbiology and biotechnology courses, this book will also serve as an invaluable overview of recent advances in this field for professional life scientists and for the diverse community of other professionals with interests in biotechnology.

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  • Rather than focusing on earlier treatments, based largely on the simplifications of geometrical acoustics, Physical Principles of Medical Ultrasonics examines concepts of wave acoustics, introducing them in the very first chapter. Practical implications of these concepts are explored, first the generation and nature of acoustic fields, and then their formal descriptions and measurement. Real tissues attenuate and scatter ultrasound in ways that have interesting relationships to their physical chemistry, and the book includes coverage of these topics.

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  • Computational fluid dynamics (CFD) is concerned with the efficient numerical solution of the partial differential equations that describe fluid dynamics. CFD techniques are commonly used in the many areas of engineering where fluid behavior is an important factor. Traditional fields of application include aerospace and automotive design, and more recently, bioengineering and consumer and medical electronics.

    pdf523p chipmoon 19-07-2012 87 30   Download

  • The discipline of Landscape Ecology is rapidly emerging as a motive force, both in the domain of theoretical ecology, and in applied fields such as biodiversity conservation planning. Without it and its further development, the more reductionist elements of, and approaches to, ecology will continue to make the discipline decreasingly relevant to land management, which will be made totally on the basis of politics and socioeconomics.

    pdf245p crazy_sms 10-05-2012 54 29   Download

  • n view of the growing importance of product liability and the demand for fulfillment of extreme specifications for new products, this book provides the basic tools for establishing model equations in structural mechanics. Additionally, it illustrates the transition and interrelation between structural mechanics and structural optimization. Nowadays, this new direction is extremely important for more efficiency in the design process. The book is divided into four parts covering the fundamentals of elasticity, plane and curved load-bearing structures and structural optimization.

    pdf402p beobobeo 01-08-2012 48 25   Download

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