Propagation

In this paper we describe the propagation of C ∞ and Sobolev singularities for the wave equation on C ∞ manifolds with corners M equipped with a Rie2 1 mannian metric g. That is, for X = M × Rt , P = Dt − ∆M , and u ∈ Hloc (X) solving P u = 0 with homogeneous Dirichlet or Neumann boundary conditions, we show that WFb (u) is a union of maximally extended generalized broken bicharacteristics. This result is a C ∞ counterpart of Lebeau’s results for the propagation of analytic singularities on real analytic manifolds with...
65p dontetvui 17012013 31 6 Download

Ebook "Plant Propagation by Tissue Culture 3rd Edition" Volume 1  The Background for what you are learning about cell technology, a standard document in English, the opportunity to increase their ability to read English in biology.
504p khaiancut_2000 12032016 19 6 Download

This paper focuses on mining the hyponymy (or isa) relation from largescale, opendomain web documents. A nonlinear probabilistic model is exploited to model the correlation between sentences in the aggregation of pattern matching results. Based on the model, we design a set of evidence combination and propagation algorithms.
10p hongdo_1 12042013 24 2 Download

Shortage of manually labeled data is an obstacle to supervised relation extraction methods. In this paper we investigate a graph based semisupervised learning algorithm, a label propagation (LP) algorithm, for relation extraction. It represents labeled and unlabeled examples and their distances as the nodes and the weights of edges of a graph, and tries to obtain a labeling function to satisfy two constraints: 1) it should be ﬁxed on the labeled nodes, 2) it should be smooth on the whole graph. ...
8p hongvang_1 16042013 19 2 Download

In this paper, we ﬁrst demonstrate the interest of the Loopy Belief Propagation algorithm to train and use a simple alignment model where the expected marginal values needed for an efﬁcient EMtraining are not easily computable. We then improve this model with a distortion model based on structure conservation.
9p bunthai_1 06052013 15 2 Download

Prospect of the early grafting techique on hevea rubber propagation helps you know early grafting technique can become a alternative method in order to produce clonal planting material of Hevea rubber; production process of eraly grafting technique can be corried out in shorter time and lower cost than conventional budding technique, there were some constraints to implement the ecnique (retardation of initial growth, leaf and stem diseases) that must be finded their solution.
22p bblocninh 21072015 16 2 Download

Wireless Communications Principles and Practice  Chapter 4: Mobile Radio Propagation LargeScale Path Loss Introduction, Electromagnetic Spectrum, Electromagnetic Waves; Speed, Wavelength, Frequency; Electric and Magnetic Fields.
38p maiyeumaiyeu25 16122016 8 2 Download

In this paper, we address the issue for learning better translation consensus in machine translation (MT) research, and explore the search of translation consensus from similar, rather than the same, source sentences or their spans. Unlike previous work on this topic, we formulate the problem as structured labeling over a much smaller graph, and we propose a novel structured label propagation for the task.
9p nghetay_1 07042013 20 1 Download

Bootstrapping a classiﬁer from a small set of seed rules can be viewed as the propagation of labels between examples via features shared between them. This paper introduces a novel variant of the Yarowsky algorithm based on this view. It is a bootstrapping learning method which uses a graph propagation algorithm with a well deﬁned objective function.
9p nghetay_1 07042013 16 1 Download

Many events in news articles don’t include time arguments. This paper describes two methods, one based on rules and the other based on statistical learning, to predict the unknown time argument for an event by the propagation from its related events. The results are promising – the rule based approach was able to correctly predict 74% of the unknown event time arguments with 70% precision.
4p hongphan_1 15042013 15 1 Download

This paper describes an algorithm for propagating verb arguments along lexical chains consisting of WordNet relations. The algorithm creates verb argument structures using VerbNet syntactic patterns. In order to increase the coverage, a larger set of verb senses were automatically associated with the existing patterns from VerbNet. The algorithm is used in an inhouse Question Answering system for reranking the set of candidate answers. Tests on factoid questions from TREC 2004 indicate that the algorithm improved the system performance by 2.4%. ...
8p hongvang_1 16042013 25 1 Download

Báo cáo khoa học: "Word Sense Disambiguation Using Label Propagation Based SemiSupervised Learning"
Shortage of manually sensetagged data is an obstacle to supervised word sense disambiguation methods. In this paper we investigate a label propagation based semisupervised learning algorithm for WSD, which combines labeled and unlabeled data in learning process to fully realize a global consistency assumption: similar examples should have similar labels.
8p bunbo_1 17042013 15 1 Download

We present a new grammatical formalism called Constraint Dependency G r a m m a r (CDG) in which every grammatical rule is given as a constraint on wordtoword modifications. CDG parsing is formalized as a constraint satisfaction problem over a finite domain so that efficient constraintpropagation algorithms can be employed to reduce structural ambiguity without generating individual parse trees. The weak generative capacity and the computational complexity of CDG parsing are also discussed.
8p bungio_1 03052013 17 1 Download

In this paper, we present a method for determining complex permittivity of materials using two different thicknesses of the sample placed in free space. The proposed method is based on the use of transmission having the same geometry with different thicknesses with the aim to determine the complex propagation constant (γ). The reflection and transmission coefficients (S11 and S21) of material samples are determined using a freespace measurement system.
6p truongtien_09 10042018 0 0 Download

Bài giảng này trình bày các nội dung liên quan đến phụ gia chống oxi hóa. Các nội dung được trình bày trong chương này gồm có: Types of Rancidity, Initiation Reactions, Propagation Reactions (Primary Reactions), Termination Reactions, Definitions of Antioxidants and Antioxidant Types,...và các nội dung liên quan khác.
29p namthangtinhlang_04 15112015 33 20 Download

In the nineteenth century, scientists, mathematician, engineers and innovators started investigating electromagnetism. The theory that underpins wireless communications was formed by Maxwell. Early demonstrations took place by Hertz, Tesla and others. Marconi demonstrated the first wireless transmission. Since then, the range of applications has expanded at an immense rate, together with the underpinning technology. The rate of development has been incredible and today the level of technical and commercial maturity is very high.
546p namde01 10042013 41 19 Download

(BQ) Ebook Microwave Engineering emphasizes the fundamental concepts of Maxwell's equations, wave propagation, network analysis and design principles as applied to modern microwave engineering. Applications of microwave engineering are also changing, with increasing emphasis on commercial use of microwave technology for personal communications systems, wireless local area networks, millimeter wave collision avoidance vehicle radars, radio frequency (RF) identification tagging, direct broadcast satellite television, and many other systems related to the information infrastructure.
756p salink 17032015 35 18 Download

The Mobile Radio Propagation Channel. Second Edition. J. D. Parsons Copyright & 2000 John Wiley & Sons Ltd Print ISBN 047198857X Online ISBN 0470841524 The Mobile Radio Propagation Channel The Mobile Radio Propagation Channel. Second Edition. J. D. Parsons Copyright & 2000 John Wiley & Sons Ltd Print ISBN 047198857X Online ISBN 0470841524 The Mobile Radio Propagation Channel Second Edition J. D.
30p khinhkha 20072010 84 12 Download

In the recent decades, there has been a growing interest in micro and nanotechnology. The advances in nanotechnology give rise to new applications and new types of materials with unique electromagnetic and mechanical properties. This book is devoted to the modern methods in electrodynamics and acoustics, which have been developed to describe wave propagation in these modern materials and nanodevices.
552p kimngan_1 06112012 35 11 Download

Textbooks on radio antennas and propagation have changed little over the last 50 years. Invariably they base themselves on the famous electromagnetic equations described by James Clerk Max well, a great nineteenthcentury genius of theoretical physics (Torrance, 1982). Maxwell's equations brilliantly encompassed all the electromagnetic phenomena known by his time (except photo electric longwave cutoff, which remained ...
269p tiramisu0908 16102012 36 10 Download